WO2018070310A1 - Battery device - Google Patents

Battery device Download PDF

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Publication number
WO2018070310A1
WO2018070310A1 PCT/JP2017/036054 JP2017036054W WO2018070310A1 WO 2018070310 A1 WO2018070310 A1 WO 2018070310A1 JP 2017036054 W JP2017036054 W JP 2017036054W WO 2018070310 A1 WO2018070310 A1 WO 2018070310A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
switch device
circuit board
heat
power element
Prior art date
Application number
PCT/JP2017/036054
Other languages
French (fr)
Japanese (ja)
Inventor
山本　康平
樹 西俣
正登 丹羽
秀宏 木下
井上　美光
Original Assignee
株式会社デンソー
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2017179311A external-priority patent/JP6638710B2/en
Application filed by 株式会社デンソー filed Critical 株式会社デンソー
Priority to DE112017005209.2T priority Critical patent/DE112017005209B4/en
Publication of WO2018070310A1 publication Critical patent/WO2018070310A1/en
Priority to US16/360,304 priority patent/US11695282B2/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/04—Arrangement of batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/227—Organic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/271—Lids or covers for the racks or secondary casings
    • H01M50/273—Lids or covers for the racks or secondary casings characterised by the material
    • H01M50/276—Inorganic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/271—Lids or covers for the racks or secondary casings
    • H01M50/273—Lids or covers for the racks or secondary casings characterised by the material
    • H01M50/278—Organic material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • This disclosure relates to a battery device.
  • Patent Document 1 discloses a battery unit including a power element that controls input / output of electric power to / from an assembled battery.
  • the power element is mounted on the second board portion in the control board at a position that does not overlap the assembled battery.
  • the battery unit of Patent Document 1 since the power element for power control is mounted on the control board, the battery unit is restricted by the heat resistance temperature related to the control board which is lower than the power element. Due to the restriction on the heat-resistant temperature, it is required to suppress the heat generation of the switch device, and there is a problem that the necessary switch performance cannot be exhibited.
  • an object of the present disclosure is to provide a battery device capable of exhibiting the performance of a switch device that controls input / output of electric power to / from the battery.
  • the battery device includes a battery, a circuit board that is electrically connected to the battery, and a switch device that controls input and output of electric power to the battery, and an exterior portion that forms an outer surface.
  • a switch device installed in a state of being separated from the circuit board, and a heat radiating member formed of a material having thermal conductivity, directly or directly on the exterior of the switch device so that the heat of the switch device can be moved
  • a heat dissipating member that is indirectly in contact with the heat conductive member.
  • the switch device is in a state in which the exterior portion is separated from the circuit board, and the exterior portion is directly or indirectly through the heat conductive member so that the heat of the switch device can move. Touching. According to this, since the heat of the switch device moves more quickly to the heat radiating member than to the circuit board, it is not necessary to take measures to suppress the heat generation of the switch device in order to suppress the thermal influence on the circuit board. A device is obtained. Further, it is possible to avoid a situation in which the heat resistance temperature of the circuit board becomes a bottleneck and the performance of the switch device cannot be fully exhibited. Therefore, it is possible to provide a battery device capable of exhibiting the performance of the switch device without being restricted by the heat-resistant temperature of the circuit board.
  • FIG. 5 is a plan view in plan view in the V direction in FIG. 4.
  • the schematic plan view which showed the 1st example about the positional relationship of a battery and a power element.
  • the battery apparatus of 1st Embodiment it is the schematic plan view which showed the 2nd example about the positional relationship of a battery and a power element.
  • the battery device 10 of the first embodiment will be described with reference to FIGS.
  • the battery device 10 can be applied to various electric devices on which a secondary battery is mounted.
  • Various electric devices are, for example, a device having a storage battery, a computer, a vehicle, and the like.
  • the battery device 10 is used for a vehicle such as a hybrid vehicle that uses a combination of an internal combustion engine and a battery-driven motor as a travel drive source, and an electric vehicle that travels by a battery-driven motor. explain.
  • the configuration of the battery device 10 will be described with reference to FIG.
  • the battery device 10 includes an assembled battery 13 configured by stacking a plurality of single cells, a circuit board 2 that performs charge / discharge control and the like in the assembled battery 13, and a suppression plate that restrains the assembled battery 13 from above. 12 and a case for housing the assembled battery 13 and the like.
  • the battery device 10 is installed in a space between a rear seat and a trunk room, and a space between a driver seat and a passenger seat, for example, under a car seat.
  • the case has a rectangular parallelepiped shape, and includes a base case 15 fixed to a place where the battery device 10 is mounted via a bracket 70 and the like, and a cover 11 attached to the base case 15 so as to cover the base case 15 from above.
  • the base case 15 and the cover 11 are made of metal, such as aluminum, copper, or an alloy thereof, or are made of a resin material.
  • the base case 15 is formed of a resin material, it is preferable to use a resin material having thermal conductivity or to mix a material having thermal conductivity with the resin material.
  • the assembled battery 13 and the circuit board 2 are installed facing each other up and down so that the assembled battery 13 is located below the circuit board 2, and each is fixed to the base case 15 with screws or the like. By attaching the cover 11 to the base case 15 from above, the assembled battery 13 and the circuit board 2 are accommodated in the case.
  • the battery device 10 includes a terminal block unit 14 that inputs and outputs power, and a connector portion that is electrically connected to a vehicle ECU or the like.
  • the terminal block unit 14 includes a terminal block unit 14A for connecting a Pb storage battery and a terminal block unit 14B for connecting an ISG.
  • the terminal block unit 14 ⁇ / b> A includes a first input / output terminal 140 connected to the external battery 17 side in FIG. 2 and a terminal block that supports the first input / output terminal 140.
  • the terminal block unit 14B includes a second input / output terminal 141 connected to the rotating machine 19 side in FIG. 2 and a terminal block that supports the second input / output terminal 141.
  • Each terminal block is made of an insulating resin material.
  • the terminal block unit 14 ⁇ / b> A and the terminal block unit 14 ⁇ / b> B are fixed to the base case 15 at positions where they are arranged side by side.
  • the external battery 17 and the electric load 18 are connected to the first input / output terminal 140 of the terminal block unit 14A via a harness.
  • a rotating machine 19 is connected to the second input / output terminal 141 of the terminal block unit 14B via a harness.
  • a vehicle ECU that can communicate with the control unit 100 is connected to the connector unit, and the connector unit is configured to be connectable to various electric loads to be supplied with power from the battery device 10.
  • the terminal block unit 14 and the connector portion are provided on the outer peripheral portion of the case, and are provided in a state exposed to the outside of the battery device 10.
  • the control unit 100 is a device that manages at least the amount of electricity stored in the assembled battery, and may be a battery management unit (Battery Management Unit).
  • the battery management unit may be a device that monitors current, voltage, and temperature related to the assembled battery, and manages abnormality of the single battery, leakage current, and the like.
  • the battery management unit is configured to be able to communicate with various electronic control devices mounted on the vehicle.
  • the battery management unit may receive a signal related to the current value detected by the current sensor, or may be a control device that controls the operation of the main relay or the precharge relay.
  • the battery management unit may function as a device that controls the operation of a motor of a blower that drives a cooling fluid to cool a heating element such as a single battery.
  • the battery management unit is configured to be able to communicate with various electronic control devices (for example, a vehicle ECU) mounted on the vehicle.
  • FIG. 3 shows the battery device 10 with the cover 11 removed.
  • the base case 15 includes a base portion 15a, a fixing boss portion 15b that stands up from the base portion 15a, and a side wall portion 15c that stands up from the base portion 15a.
  • the base portion 15a has a rectangular shape, and a side wall portion 15c is formed at the peripheral edge portion or the like.
  • the base portion 15a is a battery placement portion on which the assembled battery 13 is placed.
  • the circuit board 2 and the suppression plate 12 are fixed to the upper end portions of the side wall portion 15c and the boss portion 15b by screws or the like.
  • the base case 15 is integrally formed with a heat radiating member 6 for releasing heat generated in the first power element 3 and the second power element 4 which are semiconductor elements for power control to the outside.
  • the heat dissipating member 6 forms a part of the base case 15.
  • the heat radiating member 6 can be formed of, for example, aluminum, copper, or an alloy thereof.
  • the 1st power element 3 and the 2nd power element 4 are semiconductor switching elements, and are an example of the switch apparatus which controls the input / output of the electric power with respect to a battery.
  • the heat radiating member 6 is provided at a position adjacent to the assembled battery 13, and the flat portion of the upper surface thereof faces the exterior portion of the first power element 3 and the second power element 4 with the heat conductive member 5 interposed therebetween. .
  • the circuit board 2 is electrically connected to each of the assembled battery 13 and the switch device.
  • the exterior portion corresponds to an exterior case that protects the heart of the device, and is made of various materials that can release internal heat generation to the outside.
  • the exterior portion has a flat rectangular parallelepiped shape formed of, for example, resin.
  • the thermally conductive member 5 is a member having thermal conductivity and electrical insulation, and for example, a member made of a silicon-based material can be used.
  • the heat conductive member 5 is preferably deformable by an external force so as to be in close contact with the exterior portion forming the outer surface of the switch device or the heat radiating member 6, and is composed of, for example, an elastically deformable sheet, gel, grease, or the like. be able to.
  • the heat conductive member 5 allows heat transfer between each power element and the heat radiating member 6 and is electrically insulated.
  • the heat dissipating member 6 is connected to the vehicle member 7 via a bracket 70 in a configuration that allows heat transfer to the vehicle member 7 that is a part of the vehicle.
  • the vehicle member 7 is, for example, a frame member that fixes a predetermined device to the vehicle, a member that is coupled to the chassis, a member that supports an interior material that forms the vehicle interior, and the like.
  • the bracket 70 is formed of a material having thermal conductivity, and is a mounting member that connects the base portion 15 a and the vehicle member 7.
  • the inside of the heat radiating member 6 is a rectangular box having a hollow inside. As indicated by arrows in FIG.
  • the heat generated in each power element moves from the exterior portion to the contact portion with the heat radiating member 6 through the heat conductive member 5, and from the flat portion of the heat radiating member 6 to the side wall of the box Move down. Further, heat is transmitted from the lower end of the side wall to the base portion 15 a and is released to the vehicle member 7 through the bracket 70. Further, the heat radiating member 6 may be directly connected to the vehicle member 7 without the bracket 70 interposed therebetween.
  • the circuit configuration related to the battery device 10 includes an external battery 17, an assembled battery 13, a rotating machine 19 that is a motor generator, an electrical load 18, a first power element 3, a second power element 4, and A control unit 100 is included.
  • the assembled battery 13 is an internal battery installed inside a case that houses the battery device 10, and is composed of, for example, a lithium ion secondary battery.
  • the assembled battery 13 is preferably a secondary battery having low resistance and excellent regenerative performance.
  • the external battery 17 is a secondary battery that is installed outside the case that houses the battery device 10, and is composed of, for example, a lead storage battery.
  • the external battery 17 is preferably a large capacity secondary battery.
  • the control unit 100 performs switching between on (closed) and off (open) of each switch, which is each power element, thereby controlling charging / discharging of the external battery 17 and the assembled battery 13 respectively.
  • the switch devices such as the first power element 3 and the second power element 4 are connected to the circuit board 2 by the signal line portion 31 in which no current for supplying power flows. On the other hand, they are connected in a state where signal communication is possible.
  • the switch device has a configuration in which the power line portion 32 through which a large current for power supply flows is not connected to the circuit board 2. Therefore, a large current flowing through the device main body and the power line portion 32 in the switch device is not transmitted to the circuit board 2.
  • the battery device 10 is provided with a first input / output terminal 140 and a second input / output terminal 141 as external terminals.
  • the external battery 17 and the electrical load 18 are connected in parallel to the first input / output terminal 140, and the first power element 3 and the second input / output terminal 141 are connected in series on the opposite side of the external battery 17. Yes.
  • the external battery 17 is connected so as to be able to supply power to the electric load 18.
  • the electric load 18 is a general electric load other than the constant voltage required electric load, and is, for example, a wiper such as a headlight or a front windshield, a blower fan of an air conditioner, a heater for a defroster of a rear windshield, or the like.
  • the second power element 4 and the assembled battery 13 are connected in series at the connection portion between the first power element 3 and the second input / output terminal 141.
  • a rotating machine 19 is connected to the second input / output terminal 141 on the side opposite to the first power element 3.
  • the first power element 3 and the second power element 4 are connected to the rotating machine 19 in parallel.
  • the first power element 3 that is the first switch device functions as a switch device that switches the external battery 17, the electric load 18, and the rotating machine 19 between a state where power can be supplied and a state where power cannot be supplied.
  • the 2nd power element 4 which is a 2nd switch apparatus functions as a switch apparatus which switches the assembled battery 13 and the rotary machine 19 in the state which can supply electric power, and the state which cannot.
  • the rotating machine 19 includes an electric power generation function for generating electric power, that is, regenerative electric power generation by rotation of the crankshaft of the engine, and a power output function for applying rotational force to the crankshaft, and constitutes an ISG (Integrated Starter Generator).
  • the external battery 17 and the assembled battery 13 are electrically connected to the rotating machine 19 in parallel.
  • the first power element 3 When the first power element 3 is turned on, the external battery 17 is in a state where power can be supplied from the rotating machine 19 and regenerative power can be charged.
  • the assembled battery 13 is in a state in which power can be supplied from the rotating machine 19 when the second power element 4 is turned on, and regenerative power can be charged. Accordingly, each of the first power element 3 and the second power element 4 forms part of a large current path in which a relatively large current is assumed to flow between the rotating machine 19 and each battery.
  • the first power element 3 is positioned laterally below the circuit board 2 so that its thickness direction is orthogonal to the surface that is the main surface of the circuit board 2. It is installed in a standing posture and is indirectly in contact with the heat radiating member 6 via the heat conductive member 5. Therefore, the first power element 3 and the heat radiating member 6 are installed at a position lower than the circuit board 2.
  • the direction in which the signal line portion 31 and the power line portion 32 protrude from the exterior portion 30 is the direction along the main surface of the circuit board 2, and the end portion from which the signal line portion 31 and the power line portion 32 protrude.
  • the element width direction which forms the length between them is installed so as to be along the main surface of the circuit board 2.
  • the first power element 3 has an outer shape in which the width dimension of the exterior portion 30 is longer than the thickness dimension.
  • the signal line portion 31 protrudes laterally from the exterior portion 30 and then extends so as to bend in a direction orthogonal to the main surface of the circuit board 2 and is connected to the circuit board 2 or mounted on the circuit board 2.
  • the power line portion 32 of the first power element 3 is not connected to the circuit board 2 and is connected to the first input / output terminal 140 and the second input / output terminal 141 via the bus bar 33.
  • the power line portion 32 is a conductive terminal joined to the bus bar 33 by welding or the like.
  • the bus bar 33 is supported by the bus bar support member 16 accommodated in the base case 15 together with the assembled battery 13 and the like.
  • the bus bar 33 is a conductive plate member connected to the first input / output terminal 140 and the second input / output terminal 141.
  • the bus bar support member 16 is also a bus bar case that accommodates the bus bar 33 in a stable state.
  • the bus bar support member 16 is formed of an electrically insulating material and insulates the bus bar 33 from surrounding members.
  • the heat dissipating member 6 has a thermal connection portion with the first power element 3 on a surface extending in the lateral direction. Further, the exterior part 30 may be configured so as to be in direct contact with the heat radiating member 6.
  • the means for fixing the first power element 3 to the heat conductive member 5 and the heat radiating member 6 can be configured by fastening and fixing with an insulating adhesive such as a silicon adhesive, bolts or screws.
  • the heat dissipating member 6 is installed in a form that allows heat transfer to the base portion 15a in the base case 15 in which the assembled battery 13 is accommodated. With the above configuration, the heat transferred from the exterior portion 30 of the power element 3 to the heat radiating member 6 through the heat conductive member 5 moves to the base member 15a and then moves to the vehicle member 7 via the bracket 70. Released.
  • the end 20, which is a part of the outer peripheral edge of the circuit board 2 is in a position overlapping the first power element 3 present at a position lower than the circuit board 2.
  • the first end 30a on the board side that is a part of the outer peripheral edge of the first power element 3 is provided at a position directly below the circuit board 2 and on the opposite side to the first end 30a.
  • the second end portion 30b on the outer side of the substrate is provided so as to be positioned below the circuit board 2 and outside. Therefore, when the first power element 3 and the circuit board 2 are viewed in plan, the first power element 3 has an overlapping portion 30c that overlaps the circuit board 2 and a remaining portion 30d that does not overlap the circuit board 2 below. is set up.
  • the first power element 3 and the circuit board 2 are in a positional relationship such that the volume of the remaining portion 30d is equal to or larger than the volume of the overlapping portion 30c. Preferably there is.
  • the assembled battery 13 includes a plurality of unit cells connected in series, and these unit cells are collected in a predetermined arrangement and accommodated in a battery case.
  • two first and second battery stacks 13a and 13b are stacked side by side and arranged in two rows.
  • Each of the five unit cells is a lithium ion secondary battery having a thin rectangular parallelepiped shape, and is installed horizontally with the thickness direction thereof being directed vertically.
  • Each battery stack is connected to be energized by connecting all of the constituent cells in series. All the battery stacks are connected so as to be energized and are integrally connected to each other, thereby functioning as the assembled battery 13 of the battery device 10.
  • the assembled battery 13 of the example shown in FIG. 6 is a case where it is comprised by one battery laminated body.
  • the element group including the first power element 3 and the second power element 4 is a predetermined area AR1 in the battery device 10 adjacent to the battery stack in plan view, and the width of the battery stack. It is installed so that part or all of the elements are included in a range occupying the same length.
  • the first power element 3 and the second power element 4 include at least a part of the element in an area AR1 adjacent to the electrode terminal 130 in the battery stack in the projecting direction of the electrode terminal 130 in plan view. preferable.
  • the assembled battery 13 having this configuration the distance to the battery, the power element, and the input / output terminal can be shortened.
  • the assembled battery 13 illustrated in FIG. 6 is configured by a plurality of single cells stacked in the vertical direction, but may be configured by a plurality of single cells stacked in the horizontal direction.
  • the assembled battery 13 in the example shown in FIG. 7 is composed of two battery stacks in which the same number of unit cells are stacked.
  • the element group including the first power element 3 and the second power element 4 is a predetermined area AR2 in the battery device 10 adjacent to the two battery stacks in plan view, and includes two pieces. It is installed so that a part or all of the elements are included in a range that occupies the same length as the length of the battery stack in the arrangement direction.
  • the first power element 3 and the second power element 4 may include at least a part of the element in an area AR2 adjacent to the electrode terminal 130 in the battery stack in the projecting direction of the electrode terminal 130 in plan view. preferable.
  • the assembled battery 13 shown in FIG. 7 is configured by a plurality of single cells stacked in the vertical direction, but may be configured by a plurality of single cells stacked in the horizontal direction.
  • the assembled battery 13 in the example shown in FIG. 8 is configured by two battery stacks 13a and 13b in which different numbers of unit cells are stacked.
  • the element group including the first power element 3 and the second power element 4 has a predetermined internal structure in the battery device 10 adjacent to the first battery stack 13a having the smaller number of unit cells in plan view.
  • the area AR3 a part or all of the elements are included in a range that occupies the same length as the width of the first battery stack 13a.
  • the power element is installed in a location close to the first battery stack 13a having a small number of cell stacks and a small amount of heat generation among the plurality of battery stacks. Thermal bias can be suppressed.
  • the first power element 3 and the second power element 4 include at least a part of the element in an area AR3 adjacent to the electrode terminal 130 in the battery stack 13a in the projecting direction of the electrode terminal 130 in plan view. Is preferred.
  • the assembled battery 13 shown in FIG. 8 is configured by a plurality of single cells stacked in the vertical direction, but may be configured by a plurality of single cells stacked in the horizontal direction. Each of the assembled batteries 13 shown in FIGS. 6 to 8 may be configured so that the protruding direction of the electrode terminal 130 is not the lateral direction but the upward or downward direction.
  • the battery device 10 includes a battery pack 13, a circuit board 2 that acquires battery information related to the battery pack 13, or controls charging / discharging of the battery pack 13, and a switch that includes the first power element 3, the second power element 4, and the like.
  • the apparatus and the heat radiating member 6 are provided.
  • the switch device is a device that controls input / output of electric power to / from the assembled battery 13, and is installed in a state where the exterior portion 30 is separated from the circuit board 2.
  • the heat radiating member 6 is a member having a thermal conductivity, and is in direct contact with the exterior portion 30 of the switch device directly or indirectly through the heat conductive member 5 so that the heat of the switch device can be moved. .
  • the switch device is in a state in which the exterior portion 30 is separated from the circuit board 2, and the exterior portion 30 is directly or via the heat conductive member 5 so that the heat of the switch device can be moved. Indirect contact with the heat dissipating member 6. Thereby, the heat of the switch device can be moved to the heat radiating member 6 more quickly than the heat to the circuit board 2. For this reason, in order to prevent the temperature of the circuit board 2 from significantly increasing due to the heat generated by the switch device, it is possible to realize the battery device 10 that does not require any means for suppressing the heat generated by the switch device.
  • the high-power battery device 10 can be realized. As described above, the battery device 10 capable of exhibiting the performance of the switch device so as not to be restricted by the heat-resistant temperature of the circuit board 2 can be provided.
  • the switch device has a signal line portion 31 that transmits an electric signal and a power line portion 32 that transmits electric power.
  • the power line portion 32 is not connected to the circuit board 2 but is connected to the input / output terminals 140 and 141 related to the battery via the bus bar 33.
  • the signal line portion 31 is a lead terminal that protrudes from the inside of the switch device to the outside, and is connected to the circuit board 2.
  • the signal line portion 31 is connected to the circuit board 2 by being soldered to one or both sides of the board through the hole of the board. According to this configuration, since a large current does not flow through the signal line section 31, no large heat transfer from the signal line section 31 to the circuit board 2 occurs, and the power line section 32 is connected to the circuit board 2. Therefore, the heat generated in the power line portion 32 does not move to the circuit board 2. Therefore, the heat generated by the power line portion 32 can be moved to the heat radiating member 6 via the switch device and radiated.
  • the heat dissipating member 6 is directly connected to the vehicle member 7 with a configuration capable of heat transfer to the vehicle member 7 which is a part of the vehicle, or is connected via a bracket 70 having thermal conductivity. According to this configuration, since the heat of the switch device can be moved to the vehicle member 7 having a large heat capacity via the heat radiating member 6, the heat of the switch device can be quickly released to the outside of the battery device 10. Further, heat can be easily radiated using the vehicle member 7 without using a dedicated cooler.
  • the heat dissipating member 6 is installed in a configuration capable of heat transfer to the base portion 15a having thermal conductivity in the base case 15 in which the battery is accommodated. According to this configuration, the heat of the switch device can be moved to the outside of the battery device 10 through the entire bottom portion of the case that accommodates the battery, so that the heat of the switch device can be quickly released to the outside.
  • the switch device and the heat dissipating member 6 are spaced apart from the circuit board 2 at a low position. According to this configuration, the heat of the switch device can be quickly moved downward from the circuit board 2, so that the heat radiation to the upper circuit board 2 is suppressed and the electronic components mounted on the circuit board 2 can be suppressed. The heat effect of can be suppressed.
  • the switch device and the heat radiating member are spaced apart from each other at a high position with respect to the circuit board 2. According to this configuration, the heat of the switch device can be quickly moved upward from the circuit board 2 using the heat rise. Thereby, the heat radiation to the lower circuit board 2 can be suppressed, and the thermal influence on the electronic component mounted on the circuit board 2 can be suppressed.
  • the switch device When the switch device and the circuit board 2 are viewed in plan, the switch device is installed so as to have an overlapping portion 30c that overlaps the circuit board 2 in the switch device and a remaining portion 30d that does not overlap the circuit board 2 in the switch device. Yes.
  • the switch device is installed so that the volume of the remaining portion 30d is equal to or greater than the volume of the overlapping portion 30c. According to this configuration, it is possible to provide a configuration in which heat radiation from the surface of the exterior portion 30 of the switch device is not easily transmitted to the circuit board 2.
  • the assembled battery 13 is installed so that the electrode terminal 130 is exposed in the lateral direction.
  • the switch device is installed closer to the electrode terminal 130 with respect to the assembled battery 13. According to this structure, the battery apparatus 10 which can shorten the distance of the electricity supply path
  • the switch device is installed closer to the battery stack 13a having a smaller number of unit cells among the plurality of battery stacks. According to this configuration, since the switch device can be installed at a location close to the battery stack 13a having a small number of layers and a small amount of heat generation, it is possible to provide the battery device 10 that suppresses unevenness of the heat generation area in the battery device 10 as a whole.
  • the switch device includes a first switch device that controls input / output of power to / from an external battery 17 provided outside the battery device 10, and a second switch that controls input / output of power to / from a battery included in the battery device 10. And a switch device.
  • the heat of the first switch device that controls input / output of power to / from the external battery 17 and the heat of the second switch device that controls input / output of power to / from the battery included in the battery device 10 are dissipated.
  • the member 6 can be quickly moved and released. Therefore, it is possible to provide the battery device 10 capable of exhibiting the performances of both the first switch device and the second switch device so as not to be restricted by the heat-resistant temperature of the circuit board 2.
  • the heat dissipation member 106 is indirectly in contact with the exterior portion 30 of the first power element 3 via the heat conductive member 5 so that the heat of the first power element 3 can move. . Moreover, the structure installed so that the heat radiating member 106 may contact the exterior part 30 directly may be sufficient.
  • the heat dissipating member 106 has a heat dissipating path for dissipating the heat transferred from the exterior portion 30 of the first power element 3 through the heat conductive member 5 to the surrounding air from a plurality of fin portions, for example.
  • the heat radiating member 106 is formed of a material having thermal conductivity, for example, various metals such as aluminum, copper, and alloys thereof.
  • the first power element 3 is installed in such a posture that the thickness direction is along the main surface of the circuit board 2, and indirectly through the heat conductive member 5.
  • 206 is in contact.
  • the first power element 3 is in contact with the heat radiating member 206 so as to be capable of heat transfer in a vertical posture such that the direction in which the signal line portion 31 protrudes from the exterior portion 30 is orthogonal to the main surface of the circuit board 2. Therefore, the heat radiating member 206 has a thermal connection portion with the first power element 3 on a surface extending in the vertical direction.
  • the exterior unit 30 may be configured to be in direct contact with the heat dissipation member 206.
  • the heat radiating member 206 is installed in a configuration capable of heat transfer to the base portion 15 a in the base case 15 in which the assembled battery 13 is accommodated.
  • the heat transferred from the exterior portion 30 of the first power element 3 to the heat radiating member 206 through the thermal conductive member 5 moves to the base portion 15a and then passes to the vehicle member 7 via the bracket 70. Released by moving.
  • the heat dissipation member 206 in the third embodiment can be replaced with the heat dissipation member 106 in the second embodiment. According to this replacement, it is possible to configure a heat dissipation path for radiating heat released from the exterior portion 30 of the first power element 3 from the plurality of fin portions to the surrounding air.
  • the first power element 3, the heat conductive member 5, and the heat dissipation member 206 can be installed directly below or directly above the circuit board 2. For this reason, the size of the battery device 10 in the lateral direction can be reduced. Further, according to the third embodiment, the power line portion 32 protruding from the end located on the opposite side to the end where the signal line portion 31 protrudes in the exterior portion 30 can be separated from the circuit board 2. The influence of noise on the circuit board 2 can be suppressed.
  • the first power element 3 is installed in a posture in which the thickness direction is inclined with respect to the main surface of the circuit board 2, and indirectly through the heat conductive member 5.
  • 306 is in contact.
  • the first power element 3 is in contact with the heat radiating member 306 so as to be capable of heat transfer in a slanting posture inclined with respect to the main surface of the circuit board 2. Therefore, the heat dissipation member 306 has a thermal connection portion with the first power element 3 on a surface extending in a direction intersecting with the vertical direction.
  • the exterior unit 30 may be configured to be in direct contact with the heat dissipation member 306.
  • the heat radiating member 306 is installed in a configuration that allows heat transfer to the base portion 15 a of the base case 15 that houses the assembled battery 13.
  • the first power element 3, the heat conductive member 5, and the heat dissipation member 306 can be installed directly below or directly above the circuit board 2. For this reason, the size of the battery device 10 in the lateral direction can be reduced. Moreover, since the power line part 32 can be separated from the circuit board 2 as in the third embodiment, the influence of noise on the circuit board 2 can be suppressed.
  • a battery device 110 in the fifth embodiment, a battery device 110 according to another embodiment of the first embodiment will be described with reference to FIG.
  • the constituent elements having the same reference numerals as those in the drawing of the first embodiment are the same constituent elements and have the same operational effects.
  • the heat dissipation path from the first power element 3 to the vehicle member 7 in the battery device 110 is the same as that of the battery device 10 of the first embodiment.
  • the battery device 110 has the same effects as the effects provided by the battery device 10 described above in the first embodiment. Hereinafter, content different from the first embodiment will be described.
  • the first power element 3 is installed so as to be located immediately below the circuit board 2. Therefore, the circuit board 2 extends immediately above the first power element 3.
  • the power line portion 32 of the first power element 3 is not connected to the circuit board 2 and is connected to the first input / output terminal 140 and the second input / output terminal 141 via the bus bar 33.
  • the signal line portion 31 of the first power element 3 is connected to the circuit board 2.
  • the heat dissipation path from the first power element 3 to the base portion 15a is configured to be short. be able to. Therefore, since the battery device 110 can be configured with a short heat dissipation path, it contributes to improving heat dissipation.
  • a battery device 210 according to another embodiment of the first embodiment will be described with reference to FIG.
  • symbol as drawing of 1st Embodiment is a similar component, and there exists the same effect.
  • the heat dissipation path from the first power element 3 to the vehicle member 7 in the battery device 210 is different from that of the battery device 10 of the first embodiment.
  • content different from the first embodiment will be described.
  • the first power element 3 is installed so as to be located immediately above the circuit board 2. Therefore, the circuit board 2 exists immediately below the first power element 3.
  • the first power element 3 is installed in a state of being indirectly in contact with the heat radiating member 406 through the heat conductive member 5.
  • the heat radiating member 406 is provided on the inner surface of the top wall portion of the cover 11 so as to be capable of heat transfer.
  • the cover 11 is made of a material having thermal conductivity, and is attached to the base portion 15a of the base case 15 so as to be capable of heat transfer.
  • the heat transferred from the exterior part 30 of the first power element 3 to the heat radiating member 406 through the heat conductive member 5 is transferred to the side wall part extending downward from the top wall part after being transferred to the top wall part of the cover 11 and the base part. After moving to 15a, it is released by moving to the vehicle member 7 via the bracket 70.
  • the power line portion 32 of the first power element 3 is not connected to the circuit board 2 and is connected to the first input / output terminal 140 and the second input / output terminal 141 via the harness 133.
  • the signal line portion 31 is connected to the circuit board 2.
  • the end 20, which is a part of the outer peripheral edge of the circuit board is in a position overlapping the first power element 3 present at a position higher than the circuit board 2.
  • the first end 30a on the substrate side that is part of the outer peripheral edge of the first power element 3 is provided at a position directly above the circuit board 2, and on the opposite side to the first end 30a.
  • the second end portion 30b on the outside of the substrate that is positioned is provided so as to be positioned above the circuit board 2 and outside. Therefore, when the first power element 3 and the circuit board 2 are viewed in plan, the first power element 3 includes an overlapping portion 30c that overlaps the circuit board 2 in the first power element 3 and the circuit board 2 in the first power element 3. It is installed so as to have a remaining portion 30d that does not overlap. Furthermore, the first power element 3 and the circuit board 2 are preferably in a positional relationship such that the volume of the remaining portion 30d is equal to or larger than the volume of the overlapping portion 30c.
  • the sixth embodiment since the distance between the circuit board 2 to which the signal line portion 31 is connected and the power line portion 32 can be secured, the influence of noise on the circuit board 2 can be suppressed and the overlapping portion 30c. This contributes to the downsizing of the battery device 210.
  • the power line portion 32 by allowing the power line portion 32 to protrude outward from the circuit board 2, it is possible to provide a configuration that facilitates coupling of the power line portion 32 and the harness 133. Since heat of the first power element 3 is more easily transmitted in the upper direction than in the lower direction, it contributes to improving the heat dissipation of the first power element 3.
  • FIG. 15 is the state installed vertically with respect to the vehicle member 7.
  • FIG. 15 components given the same reference numerals as those in the drawings of the above-described embodiment are similar components and exhibit the same operational effects.
  • the heat dissipation path from the first power element 3 to the vehicle member 7 in the battery device 210 installed as in the seventh embodiment is the same as in the sixth embodiment.
  • the battery device 210 of the seventh embodiment has the same functions and effects as those described above in the sixth embodiment.
  • a battery device 310 according to another embodiment of the first embodiment will be described with reference to FIG.
  • the components given the same reference numerals as those in the drawing of the first embodiment are the same components and have the same operational effects.
  • the heat dissipation path from the first power element 3 or the second power element 4 to the vehicle member 7 in the battery device 310 is the same as that of the battery device 10 of the first embodiment.
  • the battery device 310 has the same effects as the effects provided by the battery devices of the first embodiment and the fifth embodiment. Hereinafter, differences from the first embodiment and the fifth embodiment will be described.
  • the heat dissipation member 6 included in the battery device 310 forms a part of the base case 115.
  • the heat dissipating member 6 forms a standing wall portion that stands up from the base portion 15 a that is the bottom portion of the base case 115.
  • the heat radiating member 6 is made of the same material as that of the base case 115 and is made of, for example, aluminum, copper, or an alloy thereof.
  • the 1st power element 3 and the 2nd power element 4 are installed in the state which the exterior part contacted directly or indirectly through the heat conductive member 5 to the standing wall part which stands up from the base part 15a.
  • the first power element 3, the second power element 4, and the heat radiating member are spaced apart from the circuit board 2 as shown in FIG. On the other hand, it is good also as a structure spaced apart and installed in the high position.
  • the heat radiating member 6 is a standing wall portion that is a part of the base case 115 and is formed to stand up from the base portion 15a. According to this configuration, since the heat radiating member 6 is a part of the base case 115, the resistance of heat transfer from the heat radiating member 6 to the base case 115 can be suppressed, and the heat dissipation of the switch device can be improved. Since the heat radiating member 6 is a part of the base case 115 and is a standing wall portion that stands up from the base portion 15a, the standing wall portion can prevent the switch device from being in a flooded or flooded state. Further, the standing wall portion for protecting the assembled battery 13 from being flooded or flooded can be used as the heat radiating member 6, and the battery device 310 can be downsized and the number of parts can be reduced.
  • the exterior portion of the switch device is in direct contact with the upper surface of the standing wall portion that is the heat radiating member 6 or indirectly through the heat conductive member 5. According to this configuration, since the switch device can be installed at a high position using the standing wall portion, it is possible to provide the battery device 310 in which the switch device is unlikely to be flooded or flooded.
  • a battery device 410 in the ninth embodiment, a battery device 410 according to another embodiment of the first embodiment will be described with reference to FIG.
  • components given the same reference numerals as those in the drawing of the first embodiment are the same components and have the same operational effects.
  • the heat dissipation path from the first power element 3 or the second power element 4 to the vehicle member 7 in the battery device 410 is the same as that of the battery device 10 of the first embodiment.
  • the battery device 410 has the same effects as the effects provided by the battery devices of the first embodiment and the eighth embodiment. Hereinafter, differences from the first embodiment and the eighth embodiment will be described.
  • the first power element 3 and the second power element 4 are installed in such a posture that the thickness direction is along the main surface of the circuit board 2, and the standing wall that stands up from the base portion 15 a.
  • the heat-dissipating member 6 forming a portion is indirectly in contact with the heat-conductive member 5.
  • the first power element 3 and the second power element 4 are in contact with the heat radiating member 6 so as to be capable of heat transfer in such a vertical posture that the direction in which the signal line part protrudes from the exterior part is orthogonal to the main surface of the circuit board 2. is doing.
  • the 1st power element 3 and the 2nd power element 4 are installed in the side surface 60 of the standing wall part which stands up from the base part 15a. Therefore, the heat dissipating member 6 that is the standing wall portion has an inner side surface 60 that faces the assembled battery 13 while extending in a vertical direction at a thermal connection portion with the first power element 3.
  • first power element 3 and the exterior part of the second power element 4 may be installed so as to be in direct contact with the standing wall part.
  • first power element 3, the second power element 4, and the heat radiating member are spaced apart from the circuit board 2 as shown in FIG. On the other hand, it is good also as a structure spaced apart and installed in the high position.
  • the heat transferred from the exterior portion of each power element to the standing wall portion which is the heat radiating member 6 through the heat conductive member 5 is transmitted in the lateral direction and released from the outer side surface to the atmosphere. Then, after moving to the base portion 15a, it moves to the vehicle member 7 via the bracket 70.
  • the exterior portion of the switch device is in direct contact with the side surface 60 of the standing wall portion, which is the heat radiating member 6, directly or indirectly through the heat conductive member 5.
  • the heat generated by the switch device can be released to the outside atmosphere through the standing wall portion, and can also be released to the vehicle member 7 through the base portion 15a.
  • the physique of the battery device 410 is suppressed in the width direction by installing the switch device with the thickness direction of the switch device facing the width direction or the lateral direction of the battery device 410. Can do.
  • the exterior portion of the switch device is in direct contact with the inner side surface 60 located near the assembled battery 13 in the standing wall portion which is the heat radiating member 6, or indirectly through the heat conductive member 5. According to this configuration, the switch device can be protected from external force, and since the standing wall serves as a barrier against external flooding or water immersion, the waterproof effect of the switch device can be enhanced.
  • the exterior portion of the switch device may be configured to be in direct contact with the side surface located outside in the standing wall portion that is the heat radiating member 6 or indirectly through the heat conductive member 5.
  • the disclosure of this specification is not limited to the illustrated embodiments.
  • the disclosure encompasses the illustrated embodiments and variations by those skilled in the art based thereon.
  • the disclosure is not limited to the combination of components and elements shown in the embodiments, and various modifications can be made.
  • the disclosure can be implemented in various combinations.
  • the disclosure may have additional parts that can be added to the embodiments.
  • the disclosure includes those in which the components and elements of the embodiment are omitted.
  • the disclosure encompasses parts, element replacements, or combinations between one embodiment and another.
  • the technical scope disclosed is not limited to the description of the embodiments.
  • the power element in the above-described embodiment can be replaced with a mechanical relay that does not have a semiconductor element and controls input / output of power to / from the battery.
  • the mechanical relay is a switch device that has a coil and a contact part, for example, and realizes a state in which power distribution is permitted by closing the contact part to control power input / output.
  • the exterior part forms a rectangular parallelepiped case made of, for example, resin.
  • the signal line portion 31 and the power line portion 32 protrude from the outside of the case.
  • the switch device of the present disclosure includes a power element, a mechanical relay, and the like.
  • the single battery constituting each of the external battery 17 and the assembled battery 13 is, for example, a nickel hydride secondary battery or an organic radical battery in addition to the lead storage battery and the lithium ion secondary battery described in the first embodiment. You may comprise.
  • the power element and the circuit board 2 have a partially overlapping positional relationship when seen in a plan view.
  • the positional relationship may overlap.
  • the power element and the circuit board 2 may be in a positional relationship that does not overlap at all.
  • the unit cell included in the battery device may have, for example, a form in which the outer case is a thin flat plate and the outer case is formed of a laminate sheet.
  • the laminate sheet is made of a highly insulating material.
  • the unit cell has an inner space of a flat container that is sealed by sealing the ends of the laminate sheet that is folded in half, for example, by heat-sealing the ends.
  • the internal space contains a battery main body portion including an electrode assembly, an electrolyte, a terminal connection portion, a part of the positive electrode terminal portion, and a part of the negative electrode terminal portion. Therefore, in the unit cell, the peripheral part of the flat container is sealed, so that the battery main body is housed in a sealed state inside the flat container.
  • the unit cell has a pair of electrode terminals drawn outward from the flat container.
  • a unit cell having a cylindrical outer shape may be used as the unit cell included in the battery device in the above-described embodiment.
  • the battery provided in the battery device can be composed of one or a plurality of single cells.
  • the plurality of unit cells may be stacked in the vertical direction or may be stacked in the horizontal direction.

Abstract

This battery device (10) is provided with: a battery pack (13); a circuit board (2) for acquiring battery information pertaining to the battery pack, or for controlling charging and discharging of the battery pack; a switch device that includes a first power element (3), a second power element (4), or the like; and a heat dissipation member (6). The switch device controls the input and output of power to and from the battery pack and is installed such that an exterior part (30) thereof is spaced away from the circuit substrate. The heat dissipation member is made of a thermally conductive material, and directly contacts, or indirectly contacts via a thermally conductive member (5), the exterior part of the switch device so that heat of the switch device is able to move. Thus, the performance of this switch device for controlling the input and output of power to and from the battery can be exhibited.

Description

電池装置Battery device 関連出願の相互参照Cross-reference of related applications
　本出願は、当該開示内容が参照によって本出願に組み込まれた、２０１６年１０月１４日に出願された日本特許出願２０１６－２０２９３７号および、２０１７年９月１９日に出願された日本特許出願２０１７－１７９３１１号を基にしている。 The present application includes Japanese Patent Application No. 2016-202937 filed on October 14, 2016 and Japanese Patent Application 2017 filed on September 19, 2017, the disclosures of which are incorporated herein by reference. Based on -179311.
　本開示は、電池装置に関する。 This disclosure relates to a battery device.
　特許文献１には、組電池に対する電力の入出力を制御するパワー素子を備える電池ユニットが開示されている。パワー素子は制御基板における、組電池に重ならない位置にある第２基板部に実装されている。 Patent Document 1 discloses a battery unit including a power element that controls input / output of electric power to / from an assembled battery. The power element is mounted on the second board portion in the control board at a position that does not overlap the assembled battery.
特開２０１４－１３７２４号公報JP 2014-13724 A
　特許文献１の電池ユニットは、電力制御用のパワー素子が制御基板に実装されているため、パワー素子よりも低い耐熱温度である制御基板に係る耐熱温度の制約を受けることになる。この耐熱温度上の制約のために、スイッチ装置の発熱を抑えることが求められ、必要なスイッチ性能を発揮させることができないという課題がある。 In the battery unit of Patent Document 1, since the power element for power control is mounted on the control board, the battery unit is restricted by the heat resistance temperature related to the control board which is lower than the power element. Due to the restriction on the heat-resistant temperature, it is required to suppress the heat generation of the switch device, and there is a problem that the necessary switch performance cannot be exhibited.
　このような課題に鑑み、本開示の目的は、電池に対する電力の入出力を制御するスイッチ装置についてその性能を発揮させることが可能な電池装置を提供することである。 In view of such a problem, an object of the present disclosure is to provide a battery device capable of exhibiting the performance of a switch device that controls input / output of electric power to / from the battery.
　本開示の一態様によると、電池装置は、電池と、電池と電気的に接続されている回路基板と、電池に対する電力の入出力を制御するスイッチ装置であって、外面を形成する外装部が回路基板から離間した状態で設置されているスイッチ装置と、熱伝導性を有する材質によって形成されている放熱部材であって、スイッチ装置の熱が移動可能なようにスイッチ装置の外装部に直接または熱伝導性部材を介して間接的に接触している放熱部材と、を備える。 According to one aspect of the present disclosure, the battery device includes a battery, a circuit board that is electrically connected to the battery, and a switch device that controls input and output of electric power to the battery, and an exterior portion that forms an outer surface. A switch device installed in a state of being separated from the circuit board, and a heat radiating member formed of a material having thermal conductivity, directly or directly on the exterior of the switch device so that the heat of the switch device can be moved A heat dissipating member that is indirectly in contact with the heat conductive member.
　この電池装置によれば、スイッチ装置は外装部が回路基板から離間した状態であって、スイッチ装置の熱が移動可能なように外装部が直接または熱伝導性部材を介して間接的に放熱部材に接触している。これによれば、スイッチ装置の熱は、回路基板に移動するよりも放熱部材に速やかに移動するので、回路基板に対する熱的影響を抑えるためにスイッチ装置の発熱を抑える手段を講じる必要がない電池装置が得られる。また、回路基板の耐熱温度がボトルネックになってスイッチ装置の性能を十分に発揮できない事態を回避できる。したがって、回路基板の耐熱温度の制約を受けないようにスイッチ装置の性能を発揮させることが可能な電池装置を提供できる。 According to this battery device, the switch device is in a state in which the exterior portion is separated from the circuit board, and the exterior portion is directly or indirectly through the heat conductive member so that the heat of the switch device can move. Touching. According to this, since the heat of the switch device moves more quickly to the heat radiating member than to the circuit board, it is not necessary to take measures to suppress the heat generation of the switch device in order to suppress the thermal influence on the circuit board. A device is obtained. Further, it is possible to avoid a situation in which the heat resistance temperature of the circuit board becomes a bottleneck and the performance of the switch device cannot be fully exhibited. Therefore, it is possible to provide a battery device capable of exhibiting the performance of the switch device without being restricted by the heat-resistant temperature of the circuit board.
第１実施形態に係る電池装置の構成を示した分解斜視図である。It is the disassembled perspective view which showed the structure of the battery apparatus which concerns on 1st Embodiment. 第１実施形態の電池装置に関わる回路図である。It is a circuit diagram in connection with the battery apparatus of 1st Embodiment. 第１実施形態の電池装置について、パワー素子の熱が伝達する熱伝達経路を示した概要図である。It is the schematic which showed the heat transfer path | route which the heat | fever of a power element transfers about the battery apparatus of 1st Embodiment. 回路基板、パワー素子および放熱部材との関係を示した側面図である。It is the side view which showed the relationship with a circuit board, a power element, and a heat radiating member. 図４においてＶ方向に平面視した平面図である。FIG. 5 is a plan view in plan view in the V direction in FIG. 4. 第１実施形態の電池装置において、電池とパワー素子との位置関係について第１例を示した概要平面図である。In the battery apparatus of 1st Embodiment, it is the schematic plan view which showed the 1st example about the positional relationship of a battery and a power element. 第１実施形態の電池装置において、電池とパワー素子との位置関係について第２例を示した概要平面図である。In the battery apparatus of 1st Embodiment, it is the schematic plan view which showed the 2nd example about the positional relationship of a battery and a power element. 第１実施形態の電池装置において、電池とパワー素子との位置関係について第３例を示した概要平面図である。In the battery apparatus of 1st Embodiment, it is the schematic plan view which showed the 3rd example about the positional relationship of a battery and a power element. 第２実施形態について、回路基板、パワー素子および放熱部材との関係を示した側面図である。It is the side view which showed the relationship between a circuit board, a power element, and a heat radiating member about 2nd Embodiment. 第３実施形態について、回路基板、パワー素子および放熱部材との関係を示した側面図である。It is the side view which showed the relationship between a circuit board, a power element, and a heat radiating member about 3rd Embodiment. 第４実施形態について、回路基板、パワー素子および放熱部材との関係を示した側面図である。It is the side view which showed the relationship between a circuit board, a power element, and a heat radiating member about 4th Embodiment. 第５実施形態の電池装置について、パワー素子の熱が伝達する熱伝達経路を示した概要図である。It is the schematic which showed the heat transfer path | route which the heat | fever of a power element transfers about the battery apparatus of 5th Embodiment. 第６実施形態の電池装置について、パワー素子の熱が伝達する熱伝達経路を示した概要図である。It is the schematic which showed the heat transfer path | route which the heat | fever of a power element transfers about the battery apparatus of 6th Embodiment. 第６実施形態について、回路基板、パワー素子および放熱部材との関係を示した側面図である。It is the side view which showed the relationship between a circuit board, a power element, and a heat radiating member about 6th Embodiment. 第７実施形態について、回路基板、パワー素子および放熱部材との関係を示した側面図である。It is the side view which showed the relationship between a circuit board, a power element, and a heat radiating member about 7th Embodiment. 第８実施形態の電池装置について、パワー素子の熱が伝達する熱伝達経路を示した概要図である。It is the schematic which showed the heat transfer path | route which the heat | fever of a power element transfers about the battery apparatus of 8th Embodiment. 第９実施形態の電池装置について、パワー素子の熱が伝達する熱伝達経路を示した概要図である。It is the schematic which showed the heat transfer path | route which the heat | fever of a power element transfers about the battery apparatus of 9th Embodiment.
　以下に、図面を参照しながら本開示を実施するための複数の形態を説明する。各形態において先行する形態で説明した事項に対応する部分には同一の参照符号を付して重複する説明を省略する場合がある。各形態において構成の一部のみを説明している場合は、構成の他の部分については先行して説明した他の形態を適用することができる。各実施形態で具体的に組合せが可能であることを明示している部分同士の組合せばかりではなく、特に組合せに支障が生じなければ、明示してなくとも実施形態同士を部分的に組み合せることも可能である。 Hereinafter, a plurality of modes for carrying out the present disclosure will be described with reference to the drawings. In each embodiment, parts corresponding to the matters described in the preceding embodiment may be denoted by the same reference numerals, and redundant description may be omitted. When only a part of the configuration is described in each mode, the other modes described above can be applied to the other parts of the configuration. Not only combinations of parts that clearly show that combinations are possible in each embodiment, but also combinations of the embodiments even if they are not explicitly stated unless there is a problem with the combination. Is also possible.
　（第１実施形態）
　第１実施形態の電池装置１０について、図１～図８を参照して説明する。電池装置１０は、二次電池を搭載する各種の電気機器に適用することができる。各種の電気機器は、例えば、蓄電池を有する装置、コンピュータ、車両等である。第１実施形態では、その一例として、電池装置１０を、内燃機関と電池駆動のモータとを組み合わせて走行駆動源とするハイブリッド自動車、電池駆動のモータによって走行する電気自動車等の車両に用いる場合について説明する。 (First embodiment)
The battery device 10 of the first embodiment will be described with reference to FIGS. The battery device 10 can be applied to various electric devices on which a secondary battery is mounted. Various electric devices are, for example, a device having a storage battery, a computer, a vehicle, and the like. In the first embodiment, as an example, the battery device 10 is used for a vehicle such as a hybrid vehicle that uses a combination of an internal combustion engine and a battery-driven motor as a travel drive source, and an electric vehicle that travels by a battery-driven motor. explain.
　電池装置１０の構成について図１を用いて説明する。電池装置１０は、複数の単電池を積層設置して構成されている組電池１３と、組電池１３における充放電の制御等を実施する回路基板２と、組電池１３を上方から拘束する抑制板１２と、組電池１３等を収容するケースと、を備える。電池装置１０は、例えば自動車の座席下、後部座席とトランクルームとの間の空間、運転席と助手席の間の空間に設置されている。ケースは、直方体状であり、電池装置１０の搭載場所にブラケット７０等を介して固定されるベースケース１５と、ベースケース１５を上方から覆うようにベースケース１５に装着されるカバー１１と、を備える。ベースケース１５およびカバー１１は、金属、例えばアルミニウム、銅、これらの合金により形成され、または、樹脂材料により形成されている。ベースケース１５を樹脂材料で形成する場合には、熱伝導性を有する樹脂材料を用いるか、あるいは樹脂材料に熱伝導性を有する材料を混合させることが好ましい。 The configuration of the battery device 10 will be described with reference to FIG. The battery device 10 includes an assembled battery 13 configured by stacking a plurality of single cells, a circuit board 2 that performs charge / discharge control and the like in the assembled battery 13, and a suppression plate that restrains the assembled battery 13 from above. 12 and a case for housing the assembled battery 13 and the like. The battery device 10 is installed in a space between a rear seat and a trunk room, and a space between a driver seat and a passenger seat, for example, under a car seat. The case has a rectangular parallelepiped shape, and includes a base case 15 fixed to a place where the battery device 10 is mounted via a bracket 70 and the like, and a cover 11 attached to the base case 15 so as to cover the base case 15 from above. Prepare. The base case 15 and the cover 11 are made of metal, such as aluminum, copper, or an alloy thereof, or are made of a resin material. When the base case 15 is formed of a resin material, it is preferable to use a resin material having thermal conductivity or to mix a material having thermal conductivity with the resin material.
　組電池１３と回路基板２は、組電池１３が回路基板２よりも下方になるように互いを上下に対向して設置され、それぞれはベースケース１５にねじ等により固定されている。ベースケース１５に対してカバー１１を上方から装着することにより、組電池１３、回路基板２がケース内に収容された状態となる。 The assembled battery 13 and the circuit board 2 are installed facing each other up and down so that the assembled battery 13 is located below the circuit board 2, and each is fixed to the base case 15 with screws or the like. By attaching the cover 11 to the base case 15 from above, the assembled battery 13 and the circuit board 2 are accommodated in the case.
　電池装置１０は、電力の入出力が行われる端子台ユニット１４と、車両ＥＣＵ等に対して電気的に接続されるコネクタ部と、を備える。端子台ユニット１４は、Ｐｂ蓄電池接続用の端子台ユニット１４Ａと、ＩＳＧ接続用の端子台ユニット１４Ｂと、を備える。端子台ユニット１４Ａは、図２における、外部電池１７側に接続される第１入出力端子１４０と、第１入出力端子１４０を支持する端子台と、を有する。端子台ユニット１４Ｂは、図２における、回転機１９側に接続される第２入出力端子１４１と、第２入出力端子１４１を支持する端子台と、を有する。各端子台は絶縁性を有する樹脂材料によって形成されている。端子台ユニット１４Ａ、端子台ユニット１４Ｂは、互いに横並びとなる位置でそれぞれの端子台がベースケース１５に固定されている。 The battery device 10 includes a terminal block unit 14 that inputs and outputs power, and a connector portion that is electrically connected to a vehicle ECU or the like. The terminal block unit 14 includes a terminal block unit 14A for connecting a Pb storage battery and a terminal block unit 14B for connecting an ISG. The terminal block unit 14 </ b> A includes a first input / output terminal 140 connected to the external battery 17 side in FIG. 2 and a terminal block that supports the first input / output terminal 140. The terminal block unit 14B includes a second input / output terminal 141 connected to the rotating machine 19 side in FIG. 2 and a terminal block that supports the second input / output terminal 141. Each terminal block is made of an insulating resin material. The terminal block unit 14 </ b> A and the terminal block unit 14 </ b> B are fixed to the base case 15 at positions where they are arranged side by side.
　端子台ユニット１４Ａの第１入出力端子１４０には、ハーネスを介して外部電池１７と電気負荷１８とが接続されている。端子台ユニット１４Ｂの第２入出力端子１４１には、ハーネスを介して回転機１９が接続されている。コネクタ部には、制御部１００との通信が可能な車両ＥＣＵが接続されるとともに、電池装置１０からの電力供給の対象となる各種の電気負荷にも接続可能となるように構成されている。端子台ユニット１４やコネクタ部は、ケースの外周部に設けられ、電池装置１０の外部に露出した状態で設けられている。 The external battery 17 and the electric load 18 are connected to the first input / output terminal 140 of the terminal block unit 14A via a harness. A rotating machine 19 is connected to the second input / output terminal 141 of the terminal block unit 14B via a harness. A vehicle ECU that can communicate with the control unit 100 is connected to the connector unit, and the connector unit is configured to be connectable to various electric loads to be supplied with power from the battery device 10. The terminal block unit 14 and the connector portion are provided on the outer peripheral portion of the case, and are provided in a state exposed to the outside of the battery device 10.
　制御部１００は、少なくとも組電池の蓄電量を管理する機器であり、電池管理ユニット（Battery Management Unit）であってもよい。また、電池管理ユニットは、組電池に関する電流、電圧、温度を監視するとともに、単電池の異常、漏電異常等を管理する機器であってもよい。電池管理ユニットは、車両に搭載された各種の電子制御装置と通信可能に構成されている。電池管理ユニットには、電流センサによって検出された電流値に係る信号が入力されてもよいし、メインリレーやプリチャージリレーの作動を制御する制御装置であってもよい。電池管理ユニットは、単電池等の発熱体を冷却するために、冷却用流体を駆動する送風装置のモータの作動を制御する機器として機能してもよい。電池管理ユニットは、車両に搭載された各種の電子制御装置（例えば車両ＥＣＵ）と通信可能に構成されている。 The control unit 100 is a device that manages at least the amount of electricity stored in the assembled battery, and may be a battery management unit (Battery Management Unit). In addition, the battery management unit may be a device that monitors current, voltage, and temperature related to the assembled battery, and manages abnormality of the single battery, leakage current, and the like. The battery management unit is configured to be able to communicate with various electronic control devices mounted on the vehicle. The battery management unit may receive a signal related to the current value detected by the current sensor, or may be a control device that controls the operation of the main relay or the precharge relay. The battery management unit may function as a device that controls the operation of a motor of a blower that drives a cooling fluid to cool a heating element such as a single battery. The battery management unit is configured to be able to communicate with various electronic control devices (for example, a vehicle ECU) mounted on the vehicle.
　図３には、電池装置１０についてカバー１１を取り外した状態が示されている。ベースケース１５は、ベース部１５ａと、ベース部１５ａから起立する固定用のボス部１５ｂと、ベース部１５ａから起立する側壁部１５ｃと、を有する。ベース部１５ａは、方形状をなしており、その周縁部等には側壁部１５ｃが形成されている。ベース部１５ａは、組電池１３が置かれている電池載置部となっている。側壁部１５ｃやボス部１５ｂの上端部には、回路基板２、抑制板１２のそれぞれがねじ等によって固定されている。 FIG. 3 shows the battery device 10 with the cover 11 removed. The base case 15 includes a base portion 15a, a fixing boss portion 15b that stands up from the base portion 15a, and a side wall portion 15c that stands up from the base portion 15a. The base portion 15a has a rectangular shape, and a side wall portion 15c is formed at the peripheral edge portion or the like. The base portion 15a is a battery placement portion on which the assembled battery 13 is placed. The circuit board 2 and the suppression plate 12 are fixed to the upper end portions of the side wall portion 15c and the boss portion 15b by screws or the like.
　ベースケース１５には、電力制御用の半導体素子である第１パワー素子３や第２パワー素子４において生じる熱を外部に放出するための放熱部材６が一体に形成されている。放熱部材６はベースケース１５の一部分をなしている。放熱部材６は、例えば、アルミニウム、銅、これらの合金によって形成することができる。第１パワー素子３、第２パワー素子４は、半導体スイッチング素子であり、電池に対する電力の入出力を制御するスイッチ装置の一例である。放熱部材６は、組電池１３と隣り合わせとなる位置に設けられ、その上面の平坦部が熱伝導性部材５を挟んで第１パワー素子３や第２パワー素子４の外装部に対向している。回路基板２は、組電池１３およびスイッチ装置のそれぞれと電気的に接続されている。 The base case 15 is integrally formed with a heat radiating member 6 for releasing heat generated in the first power element 3 and the second power element 4 which are semiconductor elements for power control to the outside. The heat dissipating member 6 forms a part of the base case 15. The heat radiating member 6 can be formed of, for example, aluminum, copper, or an alloy thereof. The 1st power element 3 and the 2nd power element 4 are semiconductor switching elements, and are an example of the switch apparatus which controls the input / output of the electric power with respect to a battery. The heat radiating member 6 is provided at a position adjacent to the assembled battery 13, and the flat portion of the upper surface thereof faces the exterior portion of the first power element 3 and the second power element 4 with the heat conductive member 5 interposed therebetween. . The circuit board 2 is electrically connected to each of the assembled battery 13 and the switch device.
　外装部は、装置の心臓部を保護する外装ケースに相当し、内部の発熱を外部に放出可能な各種の材質で構成されている。外装部は、例えば樹脂によって形成された扁平な直方体状の形状である。熱伝導性部材５は、熱伝導性および電気絶縁性を有する部材であり、例えばシリコン系の材質である部材を用いることができる。熱伝導性部材５は、スイッチ装置の外面を形成する外装部や放熱部材６と密着するために外力により変形可能であることが好ましく、例えば、弾性変形可能なシート、ジェル、グリス等で構成することができる。熱伝導性部材５によって、各パワー素子と放熱部材６との間は、熱移動可能であり、電気絶縁されている。 The exterior portion corresponds to an exterior case that protects the heart of the device, and is made of various materials that can release internal heat generation to the outside. The exterior portion has a flat rectangular parallelepiped shape formed of, for example, resin. The thermally conductive member 5 is a member having thermal conductivity and electrical insulation, and for example, a member made of a silicon-based material can be used. The heat conductive member 5 is preferably deformable by an external force so as to be in close contact with the exterior portion forming the outer surface of the switch device or the heat radiating member 6, and is composed of, for example, an elastically deformable sheet, gel, grease, or the like. be able to. The heat conductive member 5 allows heat transfer between each power element and the heat radiating member 6 and is electrically insulated.
　放熱部材６は、車両の一部である車両部材７へ熱移動可能な構成で車両部材７にブラケット７０を介して連結されている。車両部材７は、例えば、車両に所定の機器が固定されるフレーム部材、シャシーに結合されている部材、車室内を形成する内装材を支持する部材等である。ブラケット７０は、熱伝導性を有する材料で形成されており、ベース部１５ａと車両部材７とを接続する装着部材である。放熱部材６の内部は、内部が空洞である矩形状の箱体である。図３において矢印で示すように、各パワー素子で生じた熱は、その外装部から熱伝導性部材５を通じて放熱部材６との接触部に移動し、放熱部材６の平坦部から箱体の側壁に伝わって下方に移動する。さらに熱は側壁の下端からベース部１５ａに伝わり、ブラケット７０を介して車両部材７に放出される。また、放熱部材６は、ブラケット７０を介さないで車両部材７に直接連結されている構成であってもよい。 The heat dissipating member 6 is connected to the vehicle member 7 via a bracket 70 in a configuration that allows heat transfer to the vehicle member 7 that is a part of the vehicle. The vehicle member 7 is, for example, a frame member that fixes a predetermined device to the vehicle, a member that is coupled to the chassis, a member that supports an interior material that forms the vehicle interior, and the like. The bracket 70 is formed of a material having thermal conductivity, and is a mounting member that connects the base portion 15 a and the vehicle member 7. The inside of the heat radiating member 6 is a rectangular box having a hollow inside. As indicated by arrows in FIG. 3, the heat generated in each power element moves from the exterior portion to the contact portion with the heat radiating member 6 through the heat conductive member 5, and from the flat portion of the heat radiating member 6 to the side wall of the box Move down. Further, heat is transmitted from the lower end of the side wall to the base portion 15 a and is released to the vehicle member 7 through the bracket 70. Further, the heat radiating member 6 may be directly connected to the vehicle member 7 without the bracket 70 interposed therebetween.
　図２に示すように、電池装置１０に関わる回路構成は、外部電池１７、組電池１３、電動発電機である回転機１９、電気負荷１８、第１パワー素子３、第２パワー素子４、および制御部１００を含んでいる。組電池１３は、電池装置１０を収容するケースの内部に設置されている内部電池であり、例えばリチウムイオン二次電池で構成されている。組電池１３は抵抗が小さく回生性能に優れた二次電池であることが好ましい。外部電池１７は、電池装置１０を収容するケースの外部に設置されている二次電池であり、例えば鉛蓄電池で構成されている。外部電池１７は大容量の二次電池であることが好ましい。 As shown in FIG. 2, the circuit configuration related to the battery device 10 includes an external battery 17, an assembled battery 13, a rotating machine 19 that is a motor generator, an electrical load 18, a first power element 3, a second power element 4, and A control unit 100 is included. The assembled battery 13 is an internal battery installed inside a case that houses the battery device 10, and is composed of, for example, a lithium ion secondary battery. The assembled battery 13 is preferably a secondary battery having low resistance and excellent regenerative performance. The external battery 17 is a secondary battery that is installed outside the case that houses the battery device 10, and is composed of, for example, a lead storage battery. The external battery 17 is preferably a large capacity secondary battery.
　制御部１００を構成する部品は、回路基板２に実装されている。制御部１００は、各パワー素子である各スイッチのオン（閉鎖）とオフ（開放）との切り換えを実施し、これにより、外部電池１７、組電池１３のそれぞれに対する充放電を制御する。図４に図示するように、電池装置１０では、第１パワー素子３、第２パワー素子４等のスイッチ装置は、電力供給のための電流が流れていない信号線部３１によって、回路基板２に対して信号通信可能な状態で連結されている。さらにスイッチ装置は、電力供給のための大電流が流れる電力線部３２が回路基板２に接続されていない構成である。したがって、スイッチ装置において装置本体および電力線部３２を流れる大電流は、回路基板２には伝達されない構成となっている。 Components constituting the control unit 100 are mounted on the circuit board 2. The control unit 100 performs switching between on (closed) and off (open) of each switch, which is each power element, thereby controlling charging / discharging of the external battery 17 and the assembled battery 13 respectively. As shown in FIG. 4, in the battery device 10, the switch devices such as the first power element 3 and the second power element 4 are connected to the circuit board 2 by the signal line portion 31 in which no current for supplying power flows. On the other hand, they are connected in a state where signal communication is possible. Further, the switch device has a configuration in which the power line portion 32 through which a large current for power supply flows is not connected to the circuit board 2. Therefore, a large current flowing through the device main body and the power line portion 32 in the switch device is not transmitted to the circuit board 2.
　電池装置１０には、外部端子として第１入出力端子１４０、第２入出力端子１４１が設けられている。第１入出力端子１４０には、外部電池１７と電気負荷１８とが並列に接続され、外部電池１７とは反対側に第１パワー素子３と第２入出力端子１４１とが直列に接続されている。また、外部電池１７は、電気負荷１８に対して電力供給可能なように接続されている。電気負荷１８は、定電圧要求電気負荷以外の一般的な電気負荷であり、例えば、ヘッドライト、フロントウインドシールド等のワイパ、空調装置の送風ファン、リヤウインドシールドのデフロスタ用ヒータ等である。 The battery device 10 is provided with a first input / output terminal 140 and a second input / output terminal 141 as external terminals. The external battery 17 and the electrical load 18 are connected in parallel to the first input / output terminal 140, and the first power element 3 and the second input / output terminal 141 are connected in series on the opposite side of the external battery 17. Yes. The external battery 17 is connected so as to be able to supply power to the electric load 18. The electric load 18 is a general electric load other than the constant voltage required electric load, and is, for example, a wiper such as a headlight or a front windshield, a blower fan of an air conditioner, a heater for a defroster of a rear windshield, or the like.
　第１パワー素子３と第２入出力端子１４１との間の接続部には、第２パワー素子４と組電池１３とが直列に接続されている。第２入出力端子１４１には、第１パワー素子３とは反対側に回転機１９が接続されている。回転機１９には、第１パワー素子３と第２パワー素子４とが並列に接続されている。第１のスイッチ装置である第１パワー素子３は、外部電池１７、電気負荷１８のそれぞれと回転機１９とを電力供給の可能な状態と不可能な状態とに切り替えるスイッチ装置として機能する。第２のスイッチ装置である第２パワー素子４は、組電池１３と回転機１９とを電力供給の可能な状態と不可能な状態とに切り替えるスイッチ装置として機能する。 The second power element 4 and the assembled battery 13 are connected in series at the connection portion between the first power element 3 and the second input / output terminal 141. A rotating machine 19 is connected to the second input / output terminal 141 on the side opposite to the first power element 3. The first power element 3 and the second power element 4 are connected to the rotating machine 19 in parallel. The first power element 3 that is the first switch device functions as a switch device that switches the external battery 17, the electric load 18, and the rotating machine 19 between a state where power can be supplied and a state where power cannot be supplied. The 2nd power element 4 which is a 2nd switch apparatus functions as a switch apparatus which switches the assembled battery 13 and the rotary machine 19 in the state which can supply electric power, and the state which cannot.
　回転機１９は、エンジンのクランク軸の回転により発電、すなわち回生発電を行う発電機能と、クランク軸に回転力を付与する動力出力機能とを備えて、ＩＳＧ（Integrated Starter Generator）を構成する。外部電池１７と組電池１３とは、回転機１９に対して並列に電気接続されている。外部電池１７は、第１パワー素子３のオンにより、回転機１９からの電力供給可能な状態になり、回生電力が充電可能になる。組電池１３は、第２パワー素子４のオンにより、回転機１９からの電力供給可能な状態になり、回生電力が充電可能になる。したがって、第１パワー素子３、第２パワー素子４のそれぞれは、回転機１９と各電池との間で比較的大きな電流が流れることが想定される大電流経路の一部をなす。 The rotating machine 19 includes an electric power generation function for generating electric power, that is, regenerative electric power generation by rotation of the crankshaft of the engine, and a power output function for applying rotational force to the crankshaft, and constitutes an ISG (Integrated Starter Generator). The external battery 17 and the assembled battery 13 are electrically connected to the rotating machine 19 in parallel. When the first power element 3 is turned on, the external battery 17 is in a state where power can be supplied from the rotating machine 19 and regenerative power can be charged. The assembled battery 13 is in a state in which power can be supplied from the rotating machine 19 when the second power element 4 is turned on, and regenerative power can be charged. Accordingly, each of the first power element 3 and the second power element 4 forms part of a large current path in which a relatively large current is assumed to flow between the rotating machine 19 and each battery.
　次に、回路基板２、各パワー素子、熱伝導性部材５および放熱部材６に係る設置の関係について図４および図５を参照して説明する。回路基板２等との設置の関係に関して第１パワー素子３と第２パワー素子４は同様の構成であるので、以下の説明では代表して第１パワー素子３について説明する。したがって、以下の説明において第１パワー素子３を第２パワー素子４に置き換えることにより、第２パワー素子４と回路基板２等との設置の関係について説明することができる。 Next, the installation relationship relating to the circuit board 2, each power element, the heat conductive member 5, and the heat radiating member 6 will be described with reference to FIGS. 4 and 5. Since the first power element 3 and the second power element 4 have the same configuration with respect to the installation relationship with the circuit board 2 and the like, the first power element 3 will be described as a representative in the following description. Therefore, by replacing the first power element 3 with the second power element 4 in the following description, the installation relationship between the second power element 4 and the circuit board 2 or the like can be described.
　図４および図５に示すように、第１パワー素子３は、回路基板２から下方の離れた位置で、その厚さ方向が回路基板２の主面である表面に対して直交するような横置き姿勢で設置されており、熱伝導性部材５を介して間接的に放熱部材６に接触している。したがって、第１パワー素子３と放熱部材６は、回路基板２よりも低い位置に設置されている。第１パワー素子３は、外装部３０から信号線部３１および電力線部３２が突出する方向が回路基板２の主面に沿う方向であり、信号線部３１と電力線部３２とが突出する端部間の長さをなす素子幅の方向が回路基板２の主面に沿う方向となるように設置されている。第１パワー素子３は、外装部３０の幅寸法が厚さ寸法よりも長くなる外形形状である。 As shown in FIGS. 4 and 5, the first power element 3 is positioned laterally below the circuit board 2 so that its thickness direction is orthogonal to the surface that is the main surface of the circuit board 2. It is installed in a standing posture and is indirectly in contact with the heat radiating member 6 via the heat conductive member 5. Therefore, the first power element 3 and the heat radiating member 6 are installed at a position lower than the circuit board 2. In the first power element 3, the direction in which the signal line portion 31 and the power line portion 32 protrude from the exterior portion 30 is the direction along the main surface of the circuit board 2, and the end portion from which the signal line portion 31 and the power line portion 32 protrude. The element width direction which forms the length between them is installed so as to be along the main surface of the circuit board 2. The first power element 3 has an outer shape in which the width dimension of the exterior portion 30 is longer than the thickness dimension.
　信号線部３１は、外装部３０から横方向に突出してから回路基板２の主面に対して直交する方向に折れ曲がるように延びて回路基板２に接続されており、または回路基板２に実装された電子部品に接続されている。第１パワー素子３の電力線部３２は回路基板２には接続されておらず、バスバ３３を介して第１入出力端子１４０や第２入出力端子１４１に連結されている。電力線部３２は、溶接等によってバスバ３３に接合されている導電性端子である。バスバ３３は、組電池１３等とともにベースケース１５に収容されるバスバ支持部材１６に支持されている。バスバ３３は、第１入出力端子１４０や第２入出力端子１４１に連結されている導電性の板状部材である。バスバ支持部材１６はバスバ３３を安定した状態で収容するバスバケースでもある。バスバ支持部材１６は、電気絶縁性を有した材料によって形成されて、バスバ３３と周囲の部材とを絶縁する。 The signal line portion 31 protrudes laterally from the exterior portion 30 and then extends so as to bend in a direction orthogonal to the main surface of the circuit board 2 and is connected to the circuit board 2 or mounted on the circuit board 2. Connected to electronic components. The power line portion 32 of the first power element 3 is not connected to the circuit board 2 and is connected to the first input / output terminal 140 and the second input / output terminal 141 via the bus bar 33. The power line portion 32 is a conductive terminal joined to the bus bar 33 by welding or the like. The bus bar 33 is supported by the bus bar support member 16 accommodated in the base case 15 together with the assembled battery 13 and the like. The bus bar 33 is a conductive plate member connected to the first input / output terminal 140 and the second input / output terminal 141. The bus bar support member 16 is also a bus bar case that accommodates the bus bar 33 in a stable state. The bus bar support member 16 is formed of an electrically insulating material and insulates the bus bar 33 from surrounding members.
　放熱部材６は、第１パワー素子３との熱的な接続部分が横方向に延びる面に有している。また、外装部３０は、放熱部材６に直接接触するように設置されている構成でもよい。第１パワー素子３を熱伝導性部材５や放熱部材６に固定する手段は、絶縁性を有する接着剤、例えばシリコン系接着剤や、ボルトやねじによる締結固定によって構成することができる。放熱部材６は、組電池１３が収容されているベースケース１５におけるベース部１５ａへ熱移動可能となる形態で設置されている。以上の構成により、パワー素子３の外装部３０から熱伝導性部材５を通じて放熱部材６に移動した熱は、ベース部１５ａに移動した後、さらにブラケット７０を介して車両部材７に移動することにより放出される。 The heat dissipating member 6 has a thermal connection portion with the first power element 3 on a surface extending in the lateral direction. Further, the exterior part 30 may be configured so as to be in direct contact with the heat radiating member 6. The means for fixing the first power element 3 to the heat conductive member 5 and the heat radiating member 6 can be configured by fastening and fixing with an insulating adhesive such as a silicon adhesive, bolts or screws. The heat dissipating member 6 is installed in a form that allows heat transfer to the base portion 15a in the base case 15 in which the assembled battery 13 is accommodated. With the above configuration, the heat transferred from the exterior portion 30 of the power element 3 to the heat radiating member 6 through the heat conductive member 5 moves to the base member 15a and then moves to the vehicle member 7 via the bracket 70. Released.
　図５に示すように、回路基板２における外周縁の一部である端部２０は、回路基板２よりも低い位置に存在する第１パワー素子３と重なる位置にある。換言すれば、第１パワー素子３の外周縁に一部であって基板側の第１端部３０ａは、回路基板２の直下となる位置に設けられ、第１端部３０ａとは反対側に位置する基板外側の第２端部３０ｂは回路基板２の下方であって外側に位置するように設けられている。したがって、第１パワー素子３は、第１パワー素子３および回路基板２を平面視した場合に、下方で、回路基板２に重なる重なり部分３０ｃと回路基板２と重ならない残部３０ｄとを有するように設置されている。さらに、放熱性や、バスバ３３との接続容易性の観点から、第１パワー素子３と回路基板２とは残部３０ｄの体積が重なり部分３０ｃの体積に対して同等または大きくなるような位置関係であることが好ましい。 As shown in FIG. 5, the end 20, which is a part of the outer peripheral edge of the circuit board 2, is in a position overlapping the first power element 3 present at a position lower than the circuit board 2. In other words, the first end 30a on the board side that is a part of the outer peripheral edge of the first power element 3 is provided at a position directly below the circuit board 2 and on the opposite side to the first end 30a. The second end portion 30b on the outer side of the substrate is provided so as to be positioned below the circuit board 2 and outside. Therefore, when the first power element 3 and the circuit board 2 are viewed in plan, the first power element 3 has an overlapping portion 30c that overlaps the circuit board 2 and a remaining portion 30d that does not overlap the circuit board 2 below. is set up. Furthermore, from the viewpoint of heat dissipation and ease of connection to the bus bar 33, the first power element 3 and the circuit board 2 are in a positional relationship such that the volume of the remaining portion 30d is equal to or larger than the volume of the overlapping portion 30c. Preferably there is.
　組電池１３は、直列接続された複数の単電池を有して構成されており、これらの単電池が所定の配列でひとかたまりとなって電池ケースに収容されている。この実施形態では図１に図示するように、上下に２個積層された第１電池積層体１３ａと上下３個積層された第２電池積層体１３ｂとが横に並べて２列に配置されている。５個の単電池は、いずれも薄型の直方体状をなすリチウムイオン二次電池であり、その厚さ方向を上下方向に向けた横置き設置である。各電池積層体は、構成するすべての単電池が直列に結線されることにより、通電可能に接続されている。すべての電池積層体は、通電可能に接続され、かつ一体に連結されることにより、電池装置１０の組電池１３として機能する。 The assembled battery 13 includes a plurality of unit cells connected in series, and these unit cells are collected in a predetermined arrangement and accommodated in a battery case. In this embodiment, as shown in FIG. 1, two first and second battery stacks 13a and 13b are stacked side by side and arranged in two rows. . Each of the five unit cells is a lithium ion secondary battery having a thin rectangular parallelepiped shape, and is installed horizontally with the thickness direction thereof being directed vertically. Each battery stack is connected to be energized by connecting all of the constituent cells in series. All the battery stacks are connected so as to be energized and are integrally connected to each other, thereby functioning as the assembled battery 13 of the battery device 10.
　次に、電池装置１０において、組電池１３とスイッチ装置との位置関係について図６～図８を用いて説明する。図６に示す例の組電池１３は、１個の電池積層体で構成されている場合である。この場合には、第１パワー素子３や第２パワー素子４からなる素子群は、平面視で電池積層体に隣接する電池装置１０内の所定のエリアＡＲ１であって、電池積層体の幅と同じ長さを占める範囲に素子の一部または全部が含まれるように設置されている。第１パワー素子３や第２パワー素子４は、平面視で電池積層体における電極端子１３０に対して電極端子１３０の突出方向に隣接するエリアＡＲ１に少なくとも素子の一部が含まれていることが好ましい。この構成の組電池１３によれば、電池、パワー素子、入出力端子に至る距離を短くすることができる。図６に示す組電池１３は、上下方向に積層された複数の単電池によって構成されているが、横方向に積層された複数の単電池で構成してもよい。 Next, the positional relationship between the assembled battery 13 and the switch device in the battery device 10 will be described with reference to FIGS. The assembled battery 13 of the example shown in FIG. 6 is a case where it is comprised by one battery laminated body. In this case, the element group including the first power element 3 and the second power element 4 is a predetermined area AR1 in the battery device 10 adjacent to the battery stack in plan view, and the width of the battery stack. It is installed so that part or all of the elements are included in a range occupying the same length. The first power element 3 and the second power element 4 include at least a part of the element in an area AR1 adjacent to the electrode terminal 130 in the battery stack in the projecting direction of the electrode terminal 130 in plan view. preferable. According to the assembled battery 13 having this configuration, the distance to the battery, the power element, and the input / output terminal can be shortened. The assembled battery 13 illustrated in FIG. 6 is configured by a plurality of single cells stacked in the vertical direction, but may be configured by a plurality of single cells stacked in the horizontal direction.
　図７に示す例の組電池１３は、同じ個数の単電池が積層された２個の電池積層体で構成されている場合である。この場合には、第１パワー素子３や第２パワー素子４からなる素子群は、平面視で２個の電池積層体に隣接する電池装置１０内の所定のエリアＡＲ２であって、２個の電池積層体における並び方向の長さと同じ長さを占める範囲に素子の一部または全部が含まれるように設置されている。第１パワー素子３や第２パワー素子４は、平面視で電池積層体における電極端子１３０に対して電極端子１３０の突出方向に隣接するエリアＡＲ２に少なくとも素子の一部が含まれていることが好ましい。図７に示す組電池１３は、上下方向に積層された複数の単電池によって構成されているが、横方向に積層された複数の単電池で構成してもよい。 7 is a case where the assembled battery 13 in the example shown in FIG. 7 is composed of two battery stacks in which the same number of unit cells are stacked. In this case, the element group including the first power element 3 and the second power element 4 is a predetermined area AR2 in the battery device 10 adjacent to the two battery stacks in plan view, and includes two pieces. It is installed so that a part or all of the elements are included in a range that occupies the same length as the length of the battery stack in the arrangement direction. The first power element 3 and the second power element 4 may include at least a part of the element in an area AR2 adjacent to the electrode terminal 130 in the battery stack in the projecting direction of the electrode terminal 130 in plan view. preferable. The assembled battery 13 shown in FIG. 7 is configured by a plurality of single cells stacked in the vertical direction, but may be configured by a plurality of single cells stacked in the horizontal direction.
　図８に示す例の組電池１３は、異なる個数の単電池が積層された２個の電池積層体１３ａ，１３ｂで構成されている場合である。この場合には、第１パワー素子３や第２パワー素子４からなる素子群は、平面視で、単電池積層数の少ない方の第１電池積層体１３ａに隣接する電池装置１０内の所定のエリアＡＲ３であって、第１電池積層体１３ａの幅と同じ長さを占める範囲に素子の一部または全部が含まれるように設置されている。この構成の組電池１３によれば、複数の電池積層体のうち、単電池積層数が少なく、発熱量が小さい第１電池積層体１３ａに近い場所にパワー素子を設置するため、電池装置１０における熱的な偏りを抑制することができる。 8 is a case where the assembled battery 13 in the example shown in FIG. 8 is configured by two battery stacks 13a and 13b in which different numbers of unit cells are stacked. In this case, the element group including the first power element 3 and the second power element 4 has a predetermined internal structure in the battery device 10 adjacent to the first battery stack 13a having the smaller number of unit cells in plan view. In the area AR3, a part or all of the elements are included in a range that occupies the same length as the width of the first battery stack 13a. According to the assembled battery 13 having this configuration, the power element is installed in a location close to the first battery stack 13a having a small number of cell stacks and a small amount of heat generation among the plurality of battery stacks. Thermal bias can be suppressed.
　第１パワー素子３や第２パワー素子４は、平面視で電池積層体１３ａにおける電極端子１３０に対して電極端子１３０の突出方向に隣接するエリアＡＲ３に少なくとも素子の一部が含まれていることが好ましい。図８に示す組電池１３は、上下方向に積層された複数の単電池によって構成されているが、横方向に積層された複数の単電池で構成してもよい。また、図６～図８に示す各組電池１３は、電極端子１３０の突出方向が横方向でなく、上方向または下方向となるように設置されている構成でもよい。 The first power element 3 and the second power element 4 include at least a part of the element in an area AR3 adjacent to the electrode terminal 130 in the battery stack 13a in the projecting direction of the electrode terminal 130 in plan view. Is preferred. The assembled battery 13 shown in FIG. 8 is configured by a plurality of single cells stacked in the vertical direction, but may be configured by a plurality of single cells stacked in the horizontal direction. Each of the assembled batteries 13 shown in FIGS. 6 to 8 may be configured so that the protruding direction of the electrode terminal 130 is not the lateral direction but the upward or downward direction.
　次に、第１実施形態の電池装置１０によって得られる効果について説明する。電池装置１０は、組電池１３と、組電池１３に関する電池情報を取得する、または組電池１３における充放電を制御する回路基板２と、第１パワー素子３や第２パワー素子４等を含むスイッチ装置と、放熱部材６と、を備える。スイッチ装置は、組電池１３に対する電力の入出力を制御する装置であり、外装部３０が回路基板２から離間した状態で設置されている。放熱部材６は、熱伝導性を有する材質の部材であり、スイッチ装置の熱が移動可能なようにスイッチ装置の外装部３０に直接または熱伝導性部材５を介して間接的に接触している。 Next, effects obtained by the battery device 10 of the first embodiment will be described. The battery device 10 includes a battery pack 13, a circuit board 2 that acquires battery information related to the battery pack 13, or controls charging / discharging of the battery pack 13, and a switch that includes the first power element 3, the second power element 4, and the like. The apparatus and the heat radiating member 6 are provided. The switch device is a device that controls input / output of electric power to / from the assembled battery 13, and is installed in a state where the exterior portion 30 is separated from the circuit board 2. The heat radiating member 6 is a member having a thermal conductivity, and is in direct contact with the exterior portion 30 of the switch device directly or indirectly through the heat conductive member 5 so that the heat of the switch device can be moved. .
　この電池装置１０によれば、スイッチ装置は外装部３０が回路基板２から離間した状態であって、スイッチ装置の熱が移動可能なように外装部３０が直接または熱伝導性部材５を介して間接的に放熱部材６に接触している。これにより、スイッチ装置の熱を回路基板２に移動するよりも放熱部材６に速やかに移動させることができる。このため、スイッチ装置の発熱によって回路基板２が大きく温度上昇することを防ぐために、スイッチ装置の発熱を抑える手段を講じる必要がない電池装置１０を実現できる。また、回路基板２の耐熱温度がボトルネックになってスイッチ装置の性能を十分に発揮できない事態を回避できるので、高出力の電池装置１０を実現できる。以上のように、回路基板２の耐熱温度の制約を受けないようにスイッチ装置の性能を発揮させることが可能な電池装置１０を提供できる。 According to this battery device 10, the switch device is in a state in which the exterior portion 30 is separated from the circuit board 2, and the exterior portion 30 is directly or via the heat conductive member 5 so that the heat of the switch device can be moved. Indirect contact with the heat dissipating member 6. Thereby, the heat of the switch device can be moved to the heat radiating member 6 more quickly than the heat to the circuit board 2. For this reason, in order to prevent the temperature of the circuit board 2 from significantly increasing due to the heat generated by the switch device, it is possible to realize the battery device 10 that does not require any means for suppressing the heat generated by the switch device. Moreover, since the heat-resistant temperature of the circuit board 2 becomes a bottleneck and the situation where the performance of the switch device cannot be sufficiently exhibited can be avoided, the high-power battery device 10 can be realized. As described above, the battery device 10 capable of exhibiting the performance of the switch device so as not to be restricted by the heat-resistant temperature of the circuit board 2 can be provided.
　スイッチ装置は、電気信号を伝達する信号線部３１と電力を伝達する電力線部３２とを有する。電力線部３２は、回路基板２には接続されず、電池に係る入出力端子１４０，１４１にバスバ３３を介して連結されている。信号線部３１は、スイッチ装置の内部から外部に突出するリード端子であり、回路基板２に接続されている。信号線部３１は、基板の孔に通して、基板の片面あるいは両面にはんだ付けすることにより、回路基板２に接続されている。この構成によれば、信号線部３１には大きな電流が流れることがないため、信号線部３１から回路基板２への大きな熱移動は生じず、電力線部３２は回路基板２には接続されていないため、電力線部３２の発熱は回路基板２へ移動しないようになっている。したがって、電力線部３２の発熱をスイッチ装置を介して放熱部材６へ移動させて放熱することができる。 The switch device has a signal line portion 31 that transmits an electric signal and a power line portion 32 that transmits electric power. The power line portion 32 is not connected to the circuit board 2 but is connected to the input / output terminals 140 and 141 related to the battery via the bus bar 33. The signal line portion 31 is a lead terminal that protrudes from the inside of the switch device to the outside, and is connected to the circuit board 2. The signal line portion 31 is connected to the circuit board 2 by being soldered to one or both sides of the board through the hole of the board. According to this configuration, since a large current does not flow through the signal line section 31, no large heat transfer from the signal line section 31 to the circuit board 2 occurs, and the power line section 32 is connected to the circuit board 2. Therefore, the heat generated in the power line portion 32 does not move to the circuit board 2. Therefore, the heat generated by the power line portion 32 can be moved to the heat radiating member 6 via the switch device and radiated.
　放熱部材６は、車両の一部である車両部材７へ熱移動可能な構成で車両部材７に直接連結され、または熱伝導性を有するブラケット７０を介して連結されている。この構成によれば、スイッチ装置の熱を放熱部材６を介して熱容量の大きい車両部材７に移動させることができるので、スイッチ装置の熱を電池装置１０の外部に速やかに放出できる。また、専用の冷却器を用いずとも、車両部材７を利用して簡易的に放熱できる。 The heat dissipating member 6 is directly connected to the vehicle member 7 with a configuration capable of heat transfer to the vehicle member 7 which is a part of the vehicle, or is connected via a bracket 70 having thermal conductivity. According to this configuration, since the heat of the switch device can be moved to the vehicle member 7 having a large heat capacity via the heat radiating member 6, the heat of the switch device can be quickly released to the outside of the battery device 10. Further, heat can be easily radiated using the vehicle member 7 without using a dedicated cooler.
　放熱部材６は、電池が収容されているベースケース１５における熱伝導性を有したベース部１５ａへ熱移動可能な構成で設置されている。この構成によれば、スイッチ装置の熱を、電池を収容するケースの底部全体を介して電池装置１０の外部に移動させることができるので、スイッチ装置の熱を速やかに外部放出可能である。 The heat dissipating member 6 is installed in a configuration capable of heat transfer to the base portion 15a having thermal conductivity in the base case 15 in which the battery is accommodated. According to this configuration, the heat of the switch device can be moved to the outside of the battery device 10 through the entire bottom portion of the case that accommodates the battery, so that the heat of the switch device can be quickly released to the outside.
　スイッチ装置および放熱部材６は、回路基板２に対して低い位置に離間して設置されている。この構成によれば、スイッチ装置の熱を回路基板２よりも下方に速やかに移動させることができるため、上方の回路基板２への放熱を抑制して、回路基板２に実装された電子部品への熱影響を抑制できる。 The switch device and the heat dissipating member 6 are spaced apart from the circuit board 2 at a low position. According to this configuration, the heat of the switch device can be quickly moved downward from the circuit board 2, so that the heat radiation to the upper circuit board 2 is suppressed and the electronic components mounted on the circuit board 2 can be suppressed. The heat effect of can be suppressed.
　スイッチ装置および放熱部材は、回路基板２に対して高い位置に離間して設置されている。この構成によれば、スイッチ装置の熱を、熱上昇を利用して回路基板２よりも上方に速やかに移動させることができる。これにより、下方の回路基板２への放熱を抑制して、回路基板２に実装された電子部品への熱影響を抑制できる。 The switch device and the heat radiating member are spaced apart from each other at a high position with respect to the circuit board 2. According to this configuration, the heat of the switch device can be quickly moved upward from the circuit board 2 using the heat rise. Thereby, the heat radiation to the lower circuit board 2 can be suppressed, and the thermal influence on the electronic component mounted on the circuit board 2 can be suppressed.
　スイッチ装置は、スイッチ装置および回路基板２を平面視した場合に、スイッチ装置において回路基板２と重なる重なり部分３０ｃと、スイッチ装置において回路基板２と重ならない残部３０ｄと、を有するように設置されている。スイッチ装置は、残部３０ｄの体積が重なり部分３０ｃの体積以上となるように設置されている。この構成によれば、スイッチ装置の外装部３０の表面からの放熱が回路基板２に伝わりにくい構成を提供できる。 When the switch device and the circuit board 2 are viewed in plan, the switch device is installed so as to have an overlapping portion 30c that overlaps the circuit board 2 in the switch device and a remaining portion 30d that does not overlap the circuit board 2 in the switch device. Yes. The switch device is installed so that the volume of the remaining portion 30d is equal to or greater than the volume of the overlapping portion 30c. According to this configuration, it is possible to provide a configuration in which heat radiation from the surface of the exterior portion 30 of the switch device is not easily transmitted to the circuit board 2.
　組電池１３は、電極端子１３０が横方向に露出する姿勢で設置されている。スイッチ装置は、組電池１３に対して電極端子１３０寄りに設置されている。この構成によれば、電池、スイッチ装置、入出力端子に至る通電経路の距離を短くできる電池装置１０を提供できる。 The assembled battery 13 is installed so that the electrode terminal 130 is exposed in the lateral direction. The switch device is installed closer to the electrode terminal 130 with respect to the assembled battery 13. According to this structure, the battery apparatus 10 which can shorten the distance of the electricity supply path | route which reaches a battery, a switch apparatus, and an input-output terminal can be provided.
　スイッチ装置は、複数の電池積層体のうち、単電池の積層数が少ない方の電池積層体１３ａ寄りに設置されている。この構成によれば、積層数が少なく発熱量が小さい電池積層体１３ａに近い場所にスイッチ装置を設置できるため、電池装置１０全体における発熱エリアの偏りを抑制する電池装置１０を提供できる。 The switch device is installed closer to the battery stack 13a having a smaller number of unit cells among the plurality of battery stacks. According to this configuration, since the switch device can be installed at a location close to the battery stack 13a having a small number of layers and a small amount of heat generation, it is possible to provide the battery device 10 that suppresses unevenness of the heat generation area in the battery device 10 as a whole.
　スイッチ装置は、電池装置１０の外部に設けられている外部電池１７に対する電力の入出力を制御する第１のスイッチ装置と、電池装置１０に含まれる電池に対する電力の入出力を制御する第２のスイッチ装置と、を含んで構成されている。この構成によれば、外部電池１７に対する電力の入出力を制御する第１のスイッチ装置の熱と電池装置１０に含まれる電池に対する電力の入出力を制御する第２のスイッチ装置の熱とを放熱部材６に速やかに移動させて放出することができる。したがって、回路基板２の耐熱温度の制約を受けないように、第１のスイッチ装置と第２のスイッチ装置との両方の性能を発揮させることが可能な電池装置１０を提供できる。 The switch device includes a first switch device that controls input / output of power to / from an external battery 17 provided outside the battery device 10, and a second switch that controls input / output of power to / from a battery included in the battery device 10. And a switch device. According to this configuration, the heat of the first switch device that controls input / output of power to / from the external battery 17 and the heat of the second switch device that controls input / output of power to / from the battery included in the battery device 10 are dissipated. The member 6 can be quickly moved and released. Therefore, it is possible to provide the battery device 10 capable of exhibiting the performances of both the first switch device and the second switch device so as not to be restricted by the heat-resistant temperature of the circuit board 2.
　（第２実施形態）
　第２実施形態では、第１実施形態に対する他の形態である放熱部材１０６を備える電池装置について図９を参照して説明する。図９において、第１実施形態の図面中と同一符号を付した構成要素は、同様の構成要素であり、同様の作用効果を奏するものである。放熱部材１０６は、第１実施形態の放熱部材６と同様の作用効果を奏する。以下、第１実施形態と相違する内容について説明する。 (Second Embodiment)
In 2nd Embodiment, the battery apparatus provided with the heat radiating member 106 which is another form with respect to 1st Embodiment is demonstrated with reference to FIG. In FIG. 9, the components given the same reference numerals as those in the drawing of the first embodiment are the same components and have the same operational effects. The heat radiating member 106 has the same effect as the heat radiating member 6 of the first embodiment. Hereinafter, content different from the first embodiment will be described.
　図９に示すように、放熱部材１０６は、第１パワー素子３の熱が移動可能なように第１パワー素子３の外装部３０に熱伝導性部材５を介して間接的に接触している。また、放熱部材１０６は、外装部３０に直接接触するように設置されている構成でもよい。放熱部材１０６は、第１パワー素子３の外装部３０から熱伝導性部材５を通じて移動した熱を、例えば複数のフィン部から周囲の空気に放熱する放熱経路を有する。放熱部材１０６は、放熱部材６と同様に、熱伝導性を有する材質、例えばアルミニウム、銅、これらの合金などの各種の金属によって形成されている。 As shown in FIG. 9, the heat dissipation member 106 is indirectly in contact with the exterior portion 30 of the first power element 3 via the heat conductive member 5 so that the heat of the first power element 3 can move. . Moreover, the structure installed so that the heat radiating member 106 may contact the exterior part 30 directly may be sufficient. The heat dissipating member 106 has a heat dissipating path for dissipating the heat transferred from the exterior portion 30 of the first power element 3 through the heat conductive member 5 to the surrounding air from a plurality of fin portions, for example. As with the heat radiating member 6, the heat radiating member 106 is formed of a material having thermal conductivity, for example, various metals such as aluminum, copper, and alloys thereof.
　（第３実施形態）
　第３実施形態では、第１実施形態に対する他の形態である、第１パワー素子３と放熱部材２０６との熱的接続に係る構成について図１０を参照して説明する。図１０において、第１実施形態の図面中と同一符号を付した構成要素は、同様の構成要素であり、同様の作用効果を奏するものである。放熱部材２０６は、第１実施形態の放熱部材６と同様の作用効果を奏する。以下、第１実施形態と相違する内容について説明する。 (Third embodiment)
In the third embodiment, a configuration related to the thermal connection between the first power element 3 and the heat dissipation member 206, which is another embodiment of the first embodiment, will be described with reference to FIG. In FIG. 10, the component which attached | subjected the same code | symbol as drawing of 1st Embodiment is a similar component, and there exists the same effect. The heat radiating member 206 has the same effects as the heat radiating member 6 of the first embodiment. Hereinafter, content different from the first embodiment will be described.
　図１０に示すように、第１パワー素子３は、厚さ方向が回路基板２の主面に対して沿うような姿勢で設置されており、熱伝導性部材５を介して間接的に放熱部材２０６に接触している。第１パワー素子３は、外装部３０から信号線部３１が突出する方向が回路基板２の主面に対して直交するような縦置き姿勢で放熱部材２０６に熱移動可能に接触している。したがって、放熱部材２０６は、第１パワー素子３との熱的な接続部分を上下方向に延びる面に有している。また、外装部３０は、放熱部材２０６に直接接触するように設置されている構成でもよい。放熱部材２０６は、放熱部材６と同様に、組電池１３が収容されているベースケース１５におけるベース部１５ａへ熱移動可能な構成で設置されている。 As shown in FIG. 10, the first power element 3 is installed in such a posture that the thickness direction is along the main surface of the circuit board 2, and indirectly through the heat conductive member 5. 206 is in contact. The first power element 3 is in contact with the heat radiating member 206 so as to be capable of heat transfer in a vertical posture such that the direction in which the signal line portion 31 protrudes from the exterior portion 30 is orthogonal to the main surface of the circuit board 2. Therefore, the heat radiating member 206 has a thermal connection portion with the first power element 3 on a surface extending in the vertical direction. Further, the exterior unit 30 may be configured to be in direct contact with the heat dissipation member 206. Similarly to the heat radiating member 6, the heat radiating member 206 is installed in a configuration capable of heat transfer to the base portion 15 a in the base case 15 in which the assembled battery 13 is accommodated.
　以上の構成によれば、第１パワー素子３の外装部３０から熱伝導性部材５を通じて放熱部材２０６に移動した熱は、ベース部１５ａに移動した後、さらにブラケット７０を介して車両部材７に移動することにより放出される。また、第３実施形態における放熱部材２０６は、第２実施形態の放熱部材１０６に置き換えることができる。この置き換えによれば、第１パワー素子３の外装部３０から放出される熱を複数のフィン部から周囲の空気に放熱する放熱経路を構成できる。 According to the above configuration, the heat transferred from the exterior portion 30 of the first power element 3 to the heat radiating member 206 through the thermal conductive member 5 moves to the base portion 15a and then passes to the vehicle member 7 via the bracket 70. Released by moving. Further, the heat dissipation member 206 in the third embodiment can be replaced with the heat dissipation member 106 in the second embodiment. According to this replacement, it is possible to configure a heat dissipation path for radiating heat released from the exterior portion 30 of the first power element 3 from the plurality of fin portions to the surrounding air.
　第３実施形態によれば、第１パワー素子３、熱伝導性部材５および放熱部材２０６を回路基板２の直下または直上に設置することができる。このため、電池装置１０の横方向寸法の小型化が図れる。また、第３実施形態によれば、外装部３０において信号線部３１が突出する端部とは反対側に位置する端部から突出する電力線部３２を、回路基板２から離すことができるので、回路基板２に対するノイズの影響を抑えることができる。 According to the third embodiment, the first power element 3, the heat conductive member 5, and the heat dissipation member 206 can be installed directly below or directly above the circuit board 2. For this reason, the size of the battery device 10 in the lateral direction can be reduced. Further, according to the third embodiment, the power line portion 32 protruding from the end located on the opposite side to the end where the signal line portion 31 protrudes in the exterior portion 30 can be separated from the circuit board 2. The influence of noise on the circuit board 2 can be suppressed.
　（第４実施形態）
　第４実施形態では、第３実施形態に対する他の形態である、第１パワー素子３と放熱部材２０６との熱的接続に係る構成について図１１を参照して説明する。図１１において、前述の実施形態の図面中と同一符号を付した構成要素は、同様の構成要素であり、同様の作用効果を奏するものである。放熱部材３０６は、放熱部材６や放熱部材２０６と同様の作用効果を奏する。以下、第３実施形態と相違する内容について説明する。 (Fourth embodiment)
In the fourth embodiment, a configuration relating to thermal connection between the first power element 3 and the heat radiating member 206, which is another embodiment of the third embodiment, will be described with reference to FIG. In FIG. 11, components given the same reference numerals as those in the drawings of the above-described embodiment are similar components and have the same operational effects. The heat dissipation member 306 has the same effects as the heat dissipation member 6 and the heat dissipation member 206. Hereinafter, content different from the third embodiment will be described.
　図１１に示すように、第１パワー素子３は、厚さ方向が回路基板２の主面に対して傾くような姿勢で設置されており、熱伝導性部材５を介して間接的に放熱部材３０６に接触している。第１パワー素子３は、回路基板２の主面に対して傾く斜め置き姿勢で放熱部材３０６に熱移動可能に接触している。したがって、放熱部材３０６は、第１パワー素子３との熱的な接続部分を上下方向に対して交差する方向に延びる面に有している。また、外装部３０は、放熱部材３０６に直接接触するように設置されている構成でもよい。放熱部材３０６は、放熱部材２０６と同様に、組電池１３を収容するベースケース１５のベース部１５ａへ熱移動可能な構成で設置されている。 As shown in FIG. 11, the first power element 3 is installed in a posture in which the thickness direction is inclined with respect to the main surface of the circuit board 2, and indirectly through the heat conductive member 5. 306 is in contact. The first power element 3 is in contact with the heat radiating member 306 so as to be capable of heat transfer in a slanting posture inclined with respect to the main surface of the circuit board 2. Therefore, the heat dissipation member 306 has a thermal connection portion with the first power element 3 on a surface extending in a direction intersecting with the vertical direction. Further, the exterior unit 30 may be configured to be in direct contact with the heat dissipation member 306. Similarly to the heat radiating member 206, the heat radiating member 306 is installed in a configuration that allows heat transfer to the base portion 15 a of the base case 15 that houses the assembled battery 13.
　第４実施形態によれば、第１パワー素子３、熱伝導性部材５および放熱部材３０６を回路基板２の直下または直上に設置することができる。このため、電池装置１０の横方向寸法の小型化が図れる。また、第３実施形態と同様に、電力線部３２を回路基板２から離すことができるので、回路基板２に対するノイズの影響を抑えることができる。 According to the fourth embodiment, the first power element 3, the heat conductive member 5, and the heat dissipation member 306 can be installed directly below or directly above the circuit board 2. For this reason, the size of the battery device 10 in the lateral direction can be reduced. Moreover, since the power line part 32 can be separated from the circuit board 2 as in the third embodiment, the influence of noise on the circuit board 2 can be suppressed.
　（第５実施形態）
　第５実施形態では、第１実施形態の他の形態である電池装置１１０について図１２を参照して説明する。図１２において、第１実施形態の図面中と同一符号を付した構成要素は、同様の構成要素であり、同様の作用効果を奏するものである。電池装置１１０における第１パワー素子３から車両部材７に至る放熱経路は、第１実施形態の電池装置１０と同様である。電池装置１１０は、第１実施形態において前述した電池装置１０がもたらす作用効果と同様の作用効果を奏する。以下、第１実施形態と相違する内容について説明する。 (Fifth embodiment)
In the fifth embodiment, a battery device 110 according to another embodiment of the first embodiment will be described with reference to FIG. In FIG. 12, the constituent elements having the same reference numerals as those in the drawing of the first embodiment are the same constituent elements and have the same operational effects. The heat dissipation path from the first power element 3 to the vehicle member 7 in the battery device 110 is the same as that of the battery device 10 of the first embodiment. The battery device 110 has the same effects as the effects provided by the battery device 10 described above in the first embodiment. Hereinafter, content different from the first embodiment will be described.
　図１２に示すように、第１パワー素子３は、回路基板２の直下に位置するように設置されている。したがって、第１パワー素子３の直上には、回路基板２が延びている。第１パワー素子３の電力線部３２は回路基板２には接続されておらず、バスバ３３を介して第１入出力端子１４０や第２入出力端子１４１に連結されている。第１パワー素子３の信号線部３１は回路基板２に接続されている。 As shown in FIG. 12, the first power element 3 is installed so as to be located immediately below the circuit board 2. Therefore, the circuit board 2 extends immediately above the first power element 3. The power line portion 32 of the first power element 3 is not connected to the circuit board 2 and is connected to the first input / output terminal 140 and the second input / output terminal 141 via the bus bar 33. The signal line portion 31 of the first power element 3 is connected to the circuit board 2.
　第５実施形態の電池装置１１０によれば、第１パワー素子３の高さ位置が回路基板２よりも下方に抑えられるので、第１パワー素子３からベース部１５ａまでの放熱経路を短く構成することができる。したがって、電池装置１１０は、放熱経路が短く構成できるので、放熱性を高めることに寄与する。 According to the battery device 110 of the fifth embodiment, since the height position of the first power element 3 is suppressed below the circuit board 2, the heat dissipation path from the first power element 3 to the base portion 15a is configured to be short. be able to. Therefore, since the battery device 110 can be configured with a short heat dissipation path, it contributes to improving heat dissipation.
　（第６実施形態）
　第６実施形態では、第１実施形態の他の形態である電池装置２１０について図１３を参照して説明する。図１３および図１４において、第１実施形態の図面中と同一符号を付した構成要素は、同様の構成要素であり、同様の作用効果を奏するものである。電池装置２１０における第１パワー素子３から車両部材７に至る放熱経路は、第１実施形態の電池装置１０と相違する。以下、第１実施形態と相違する内容について説明する。 (Sixth embodiment)
In the sixth embodiment, a battery device 210 according to another embodiment of the first embodiment will be described with reference to FIG. In FIG. 13 and FIG. 14, the component which attached | subjected the same code | symbol as drawing of 1st Embodiment is a similar component, and there exists the same effect. The heat dissipation path from the first power element 3 to the vehicle member 7 in the battery device 210 is different from that of the battery device 10 of the first embodiment. Hereinafter, content different from the first embodiment will be described.
　図１３に示すように、第１パワー素子３は、回路基板２の直上に位置するように設置されている。したがって、第１パワー素子３の直下には、回路基板２が存在している。第１パワー素子３は、熱伝導性部材５を介して放熱部材４０６に間接的に接触した状態で設置されている。放熱部材４０６は、カバー１１における天壁部の内面に熱移動可能な構成で設けられている。カバー１１は、熱伝導性を有する材質で形成されており、ベースケース１５のベース部１５ａに対して熱移動可能な構成で装着されている。第１パワー素子３の外装部３０から熱伝導性部材５を通じて放熱部材４０６に移動した熱は、カバー１１の天壁部に移動した後、天壁部から下方に延びる側壁部に伝わり、ベース部１５ａに移動した後、ブラケット７０を介して車両部材７に移動することにより放出される。 As shown in FIG. 13, the first power element 3 is installed so as to be located immediately above the circuit board 2. Therefore, the circuit board 2 exists immediately below the first power element 3. The first power element 3 is installed in a state of being indirectly in contact with the heat radiating member 406 through the heat conductive member 5. The heat radiating member 406 is provided on the inner surface of the top wall portion of the cover 11 so as to be capable of heat transfer. The cover 11 is made of a material having thermal conductivity, and is attached to the base portion 15a of the base case 15 so as to be capable of heat transfer. The heat transferred from the exterior part 30 of the first power element 3 to the heat radiating member 406 through the heat conductive member 5 is transferred to the side wall part extending downward from the top wall part after being transferred to the top wall part of the cover 11 and the base part. After moving to 15a, it is released by moving to the vehicle member 7 via the bracket 70.
　図１４に示すように、第１パワー素子３の電力線部３２は回路基板２には接続されておらず、ハーネス１３３を介して第１入出力端子１４０や第２入出力端子１４１に連結されており、信号線部３１は回路基板２に接続されている。図１４において破線で示すように、回路基板における外周縁の一部である端部２０は、回路基板２よりも高い位置に存在する第１パワー素子３と重なる位置にある。換言すれば、第１パワー素子３の外周縁に一部であって基板側の第１端部３０ａは、回路基板２の直上となる位置に設けられ、第１端部３０ａとは反対側に位置する基板外側の第２端部３０ｂは回路基板２の上方であって外側に位置するように設けられている。したがって、第１パワー素子３は、第１パワー素子３および回路基板２を平面視した場合に、第１パワー素子３において回路基板２と重なる重なり部分３０ｃと第１パワー素子３において回路基板２と重ならない残部３０ｄとを有するように設置されている。さらに、第１パワー素子３と回路基板２とは残部３０ｄの体積が重なり部分３０ｃの体積に対して同等または大きくなるような位置関係であることが好ましい。 As shown in FIG. 14, the power line portion 32 of the first power element 3 is not connected to the circuit board 2 and is connected to the first input / output terminal 140 and the second input / output terminal 141 via the harness 133. The signal line portion 31 is connected to the circuit board 2. As shown by a broken line in FIG. 14, the end 20, which is a part of the outer peripheral edge of the circuit board, is in a position overlapping the first power element 3 present at a position higher than the circuit board 2. In other words, the first end 30a on the substrate side that is part of the outer peripheral edge of the first power element 3 is provided at a position directly above the circuit board 2, and on the opposite side to the first end 30a. The second end portion 30b on the outside of the substrate that is positioned is provided so as to be positioned above the circuit board 2 and outside. Therefore, when the first power element 3 and the circuit board 2 are viewed in plan, the first power element 3 includes an overlapping portion 30c that overlaps the circuit board 2 in the first power element 3 and the circuit board 2 in the first power element 3. It is installed so as to have a remaining portion 30d that does not overlap. Furthermore, the first power element 3 and the circuit board 2 are preferably in a positional relationship such that the volume of the remaining portion 30d is equal to or larger than the volume of the overlapping portion 30c.
　第６実施形態によれば、信号線部３１が接続されている回路基板２と電力線部３２との距離を確保できるので、回路基板２に対するノイズの影響を抑制することができるとともに、重なり部分３０ｃを有することにより、電池装置２１０の小型化に寄与する。また、電力線部３２を回路基板２よりも外側にはみ出させることにより、電力線部３２とハーネス１３３との結合を行いやすい構成を提供できる。第１パワー素子３の熱は下方よりも上方の方が伝わりやすいため、第１パワー素子３の放熱性を高めることに寄与する。 According to the sixth embodiment, since the distance between the circuit board 2 to which the signal line portion 31 is connected and the power line portion 32 can be secured, the influence of noise on the circuit board 2 can be suppressed and the overlapping portion 30c. This contributes to the downsizing of the battery device 210. In addition, by allowing the power line portion 32 to protrude outward from the circuit board 2, it is possible to provide a configuration that facilitates coupling of the power line portion 32 and the harness 133. Since heat of the first power element 3 is more easily transmitted in the upper direction than in the lower direction, it contributes to improving the heat dissipation of the first power element 3.
　（第７実施形態）
　第７実施形態では、第６実施形態の電池装置２１０を、車両部材７に対して縦置きに設置した状態である図１５について説明する。図１５において、前述の実施形態の図面中と同一符号を付した構成要素は、同様の構成要素であり、同様の作用効果を奏するものである。第７実施形態のように設置された電池装置２１０における第１パワー素子３から車両部材７に至る放熱経路は、第６実施形態と同様である。第７実施形態の電池装置２１０は、第６実施形態において前述した作用効果と同様の作用効果を奏する。 (Seventh embodiment)
7th Embodiment demonstrates the battery apparatus 210 of 6th Embodiment about FIG. 15 which is the state installed vertically with respect to the vehicle member 7. FIG. In FIG. 15, components given the same reference numerals as those in the drawings of the above-described embodiment are similar components and exhibit the same operational effects. The heat dissipation path from the first power element 3 to the vehicle member 7 in the battery device 210 installed as in the seventh embodiment is the same as in the sixth embodiment. The battery device 210 of the seventh embodiment has the same functions and effects as those described above in the sixth embodiment.
　（第８実施形態）
　第８実施形態では、第１実施形態の他の形態である電池装置３１０について図１６を参照して説明する。図１６において、第１実施形態の図面中と同一符号を付した構成要素は、同様の構成要素であり、同様の作用効果を奏するものである。電池装置３１０における第１パワー素子３や第２パワー素子４から車両部材７に至る放熱経路は、第１実施形態の電池装置１０と同様である。電池装置３１０は、第１実施形態や第５実施形態の電池装置がもたらす作用効果と同様の作用効果を奏する。以下、第１実施形態および第５実施形態との相違点について説明する。 (Eighth embodiment)
In the eighth embodiment, a battery device 310 according to another embodiment of the first embodiment will be described with reference to FIG. In FIG. 16, the components given the same reference numerals as those in the drawing of the first embodiment are the same components and have the same operational effects. The heat dissipation path from the first power element 3 or the second power element 4 to the vehicle member 7 in the battery device 310 is the same as that of the battery device 10 of the first embodiment. The battery device 310 has the same effects as the effects provided by the battery devices of the first embodiment and the fifth embodiment. Hereinafter, differences from the first embodiment and the fifth embodiment will be described.
　図１６に示すように、電池装置３１０が有する放熱部材６はベースケース１１５の一部分をなしている。放熱部材６はベースケース１１５の底部であるベース部１５ａから起立する立壁部をなしている。放熱部材６は、ベースケース１１５と同じ材質でできており、例えば、アルミニウム、銅、これらの合金によって形成されている。第１パワー素子３や第２パワー素子４は、外装部がベース部１５ａから起立する立壁部に直接または熱伝導性部材５を介して間接的に接触した状態で設置されている。また、第１パワー素子３、第２パワー素子４、放熱部材は、図１６に示すように回路基板２に対して低い位置に離間して設置されているが、これに代えて回路基板２に対して高い位置に離間して設置されている構成としてもよい。 As shown in FIG. 16, the heat dissipation member 6 included in the battery device 310 forms a part of the base case 115. The heat dissipating member 6 forms a standing wall portion that stands up from the base portion 15 a that is the bottom portion of the base case 115. The heat radiating member 6 is made of the same material as that of the base case 115 and is made of, for example, aluminum, copper, or an alloy thereof. The 1st power element 3 and the 2nd power element 4 are installed in the state which the exterior part contacted directly or indirectly through the heat conductive member 5 to the standing wall part which stands up from the base part 15a. In addition, the first power element 3, the second power element 4, and the heat radiating member are spaced apart from the circuit board 2 as shown in FIG. On the other hand, it is good also as a structure spaced apart and installed in the high position.
　第８実施形態の電池装置３１０によれば、放熱部材６はベースケース１１５の一部であってベース部１５ａから起立するように形成された立壁部である。この構成によれば、放熱部材６をベースケース１１５の一部分とするため、放熱部材６からベースケース１１５への熱移動の抵抗を抑えることができ、スイッチ装置の放熱性向上を図ることができる。放熱部材６は、ベースケース１１５の一部であってベース部１５ａから起立する立壁部であるため、この立壁部によってスイッチ装置が被水または浸水の状態になることを抑えることができる。また、組電池１３を被水または浸水の状態から保護するための立壁部を、放熱部材６として活用することができ、電池装置３１０の小型化、部品点数の低減が図れる。 According to the battery device 310 of the eighth embodiment, the heat radiating member 6 is a standing wall portion that is a part of the base case 115 and is formed to stand up from the base portion 15a. According to this configuration, since the heat radiating member 6 is a part of the base case 115, the resistance of heat transfer from the heat radiating member 6 to the base case 115 can be suppressed, and the heat dissipation of the switch device can be improved. Since the heat radiating member 6 is a part of the base case 115 and is a standing wall portion that stands up from the base portion 15a, the standing wall portion can prevent the switch device from being in a flooded or flooded state. Further, the standing wall portion for protecting the assembled battery 13 from being flooded or flooded can be used as the heat radiating member 6, and the battery device 310 can be downsized and the number of parts can be reduced.
　スイッチ装置の外装部は、放熱部材６である立壁部の上面に直接または熱伝導性部材５を介して間接的に接触している。この構成によれば、立壁部を利用して、スイッチ装置を高い位置に設置できるため、スイッチ装置が被水または浸水の状態になりにくい電池装置３１０を提供できる。 The exterior portion of the switch device is in direct contact with the upper surface of the standing wall portion that is the heat radiating member 6 or indirectly through the heat conductive member 5. According to this configuration, since the switch device can be installed at a high position using the standing wall portion, it is possible to provide the battery device 310 in which the switch device is unlikely to be flooded or flooded.
　（第９実施形態）
　第９実施形態では、第１実施形態の他の形態である電池装置４１０について図１７を参照して説明する。図１７において、第１実施形態の図面中と同一符号を付した構成要素は、同様の構成要素であり、同様の作用効果を奏するものである。電池装置４１０における第１パワー素子３や第２パワー素子４から車両部材７に至る放熱経路は、第１実施形態の電池装置１０と同様である。電池装置４１０は、第１実施形態および第８実施形態の電池装置がもたらす作用効果と同様の作用効果を奏する。以下、第１実施形態および第８実施形態との相違点について説明する。 (Ninth embodiment)
In the ninth embodiment, a battery device 410 according to another embodiment of the first embodiment will be described with reference to FIG. In FIG. 17, components given the same reference numerals as those in the drawing of the first embodiment are the same components and have the same operational effects. The heat dissipation path from the first power element 3 or the second power element 4 to the vehicle member 7 in the battery device 410 is the same as that of the battery device 10 of the first embodiment. The battery device 410 has the same effects as the effects provided by the battery devices of the first embodiment and the eighth embodiment. Hereinafter, differences from the first embodiment and the eighth embodiment will be described.
　図１０に示すように、第１パワー素子３や第２パワー素子４は、厚さ方向が回路基板２の主面に対して沿うような姿勢で設置されており、ベース部１５ａから起立する立壁部をなす放熱部材６に熱伝導性部材５を介して間接的に接触している。第１パワー素子３や第２パワー素子４は、外装部から信号線部が突出する方向が回路基板２の主面に対して直交するような縦置き姿勢で放熱部材６に熱移動可能に接触している。第１パワー素子３や第２パワー素子４は、ベース部１５ａから起立する立壁部の側面６０に設置されている。したがって、立壁部である放熱部材６は、第１パワー素子３との熱的な接続部分を上下方向に延びるとともに、組電池１３に対向する内側の側面６０を有している。 As shown in FIG. 10, the first power element 3 and the second power element 4 are installed in such a posture that the thickness direction is along the main surface of the circuit board 2, and the standing wall that stands up from the base portion 15 a. The heat-dissipating member 6 forming a portion is indirectly in contact with the heat-conductive member 5. The first power element 3 and the second power element 4 are in contact with the heat radiating member 6 so as to be capable of heat transfer in such a vertical posture that the direction in which the signal line part protrudes from the exterior part is orthogonal to the main surface of the circuit board 2. is doing. The 1st power element 3 and the 2nd power element 4 are installed in the side surface 60 of the standing wall part which stands up from the base part 15a. Therefore, the heat dissipating member 6 that is the standing wall portion has an inner side surface 60 that faces the assembled battery 13 while extending in a vertical direction at a thermal connection portion with the first power element 3.
　また、第１パワー素子３の外装部３０や第２パワー素子４の外装部は、立壁部に直接接触するように設置されている構成でもよい。また、第１パワー素子３、第２パワー素子４、放熱部材は、図１７に示すように回路基板２に対して低い位置に離間して設置されているが、これに代えて回路基板２に対して高い位置に離間して設置されている構成としてもよい。 Further, the exterior part 30 of the first power element 3 and the exterior part of the second power element 4 may be installed so as to be in direct contact with the standing wall part. In addition, the first power element 3, the second power element 4, and the heat radiating member are spaced apart from the circuit board 2 as shown in FIG. On the other hand, it is good also as a structure spaced apart and installed in the high position.
　以上の構成によれば、各パワー素子の外装部から熱伝導性部材５を通じて、放熱部材６である立壁部に移動した熱は、横方向に伝達して外側の側面から雰囲気に放出されるとともに、ベース部１５ａに移動後、ブラケット７０を介して車両部材７に移動する。 According to the above configuration, the heat transferred from the exterior portion of each power element to the standing wall portion which is the heat radiating member 6 through the heat conductive member 5 is transmitted in the lateral direction and released from the outer side surface to the atmosphere. Then, after moving to the base portion 15a, it moves to the vehicle member 7 via the bracket 70.
　第９実施形態によれば、スイッチ装置の外装部は、放熱部材６である立壁部の側面６０に直接または熱伝導性部材５を介して間接的に接触している。この構成によれば、スイッチ装置の発熱を立壁部を通じて外部の雰囲気に放出できるとともに、ベース部１５ａを通じて車両部材７に放出することもできる。この２つの放熱経路によって放熱性を高めることができ、各放熱経路は短い経路を構成できる。 According to the ninth embodiment, the exterior portion of the switch device is in direct contact with the side surface 60 of the standing wall portion, which is the heat radiating member 6, directly or indirectly through the heat conductive member 5. According to this configuration, the heat generated by the switch device can be released to the outside atmosphere through the standing wall portion, and can also be released to the vehicle member 7 through the base portion 15a. These two heat radiation paths can improve heat dissipation, and each heat radiation path can constitute a short path.
　第９実施形態の電池装置４１０によれば、スイッチ装置の厚さ方向を電池装置４１０の幅方向または横方向に向けてスイッチ装置を設置することにより、幅方向について電池装置４１０の体格を抑えることができる。 According to the battery device 410 of the ninth embodiment, the physique of the battery device 410 is suppressed in the width direction by installing the switch device with the thickness direction of the switch device facing the width direction or the lateral direction of the battery device 410. Can do.
　スイッチ装置の外装部は、放熱部材６である立壁部において組電池１３寄りに位置する内側の側面６０に直接または熱伝導性部材５を介して間接的に接触している。この構成によれば、外力からスイッチ装置を保護できるとともに、外部からの被水や浸水に対して立壁部が障壁になるため、スイッチ装置の防水効果を高めることができる。 The exterior portion of the switch device is in direct contact with the inner side surface 60 located near the assembled battery 13 in the standing wall portion which is the heat radiating member 6, or indirectly through the heat conductive member 5. According to this configuration, the switch device can be protected from external force, and since the standing wall serves as a barrier against external flooding or water immersion, the waterproof effect of the switch device can be enhanced.
　また、スイッチ装置の外装部は、放熱部材６である立壁部において外側に位置する側面に直接または熱伝導性部材５を介して間接的に接触している構成でもよい。 Further, the exterior portion of the switch device may be configured to be in direct contact with the side surface located outside in the standing wall portion that is the heat radiating member 6 or indirectly through the heat conductive member 5.
　この明細書の開示は、例示された実施形態に制限されない。開示は、例示された実施形態と、それらに基づく当業者による変形態様を包含する。例えば、開示は、実施形態において示された部品、要素の組み合わせに限定されず、種々変形して実施することが可能である。開示は、多様な組み合わせによって実施可能である。開示は、実施形態に追加可能な追加的な部分をもつことができる。開示は、実施形態の部品、要素が省略されたものを包含する。開示は、ひとつの実施形態と他の実施形態との間における部品、要素の置き換え、または組み合わせを包含する。開示される技術的範囲は、実施形態の記載に限定されない。 The disclosure of this specification is not limited to the illustrated embodiments. The disclosure encompasses the illustrated embodiments and variations by those skilled in the art based thereon. For example, the disclosure is not limited to the combination of components and elements shown in the embodiments, and various modifications can be made. The disclosure can be implemented in various combinations. The disclosure may have additional parts that can be added to the embodiments. The disclosure includes those in which the components and elements of the embodiment are omitted. The disclosure encompasses parts, element replacements, or combinations between one embodiment and another. The technical scope disclosed is not limited to the description of the embodiments.
　前述の実施形態におけるパワー素子は、半導体素子を有さない、電池に対する電力の入出力を制御するメカニカルリレーに置き換えることができる。メカニカルリレーは、例えばコイルと接点部を有し、接点部を閉じることにより電力の流通を許可する状態を実現して電力の入出力を制御するスイッチ装置である。メカニカルリレーの場合、その外装部は、例えば樹脂によって形成された直方体状のケースをなす。ケースの外部には、前述したように、信号線部３１および電力線部３２がそれぞれ突出している。このように本開示のスイッチ装置には、パワー素子、メカニカルリレー等が含まれる。 The power element in the above-described embodiment can be replaced with a mechanical relay that does not have a semiconductor element and controls input / output of power to / from the battery. The mechanical relay is a switch device that has a coil and a contact part, for example, and realizes a state in which power distribution is permitted by closing the contact part to control power input / output. In the case of a mechanical relay, the exterior part forms a rectangular parallelepiped case made of, for example, resin. As described above, the signal line portion 31 and the power line portion 32 protrude from the outside of the case. As described above, the switch device of the present disclosure includes a power element, a mechanical relay, and the like.
　前述の実施形態において、外部電池１７、組電池１３のそれぞれを構成する単電池は、第１実施形態で記載した鉛蓄電池、リチウムイオン二次電池の他、例えばニッケル水素二次電池、有機ラジカル電池で構成してもよい。 In the above-described embodiment, the single battery constituting each of the external battery 17 and the assembled battery 13 is, for example, a nickel hydride secondary battery or an organic radical battery in addition to the lead storage battery and the lithium ion secondary battery described in the first embodiment. You may comprise.
　前述の実施形態において、パワー素子と回路基板２とは、平面視した場合に、部分的に重なる位置関係であることを説明したが、パワー素子と回路基板２はパワー素子の全部が回路基板２に重なる位置関係でもよい。また、パワー素子と回路基板２は全く重ならない位置関係でもよい。 In the above-described embodiment, it has been described that the power element and the circuit board 2 have a partially overlapping positional relationship when seen in a plan view. The positional relationship may overlap. The power element and the circuit board 2 may be in a positional relationship that does not overlap at all.
　前述の実施形態において電池装置が備える単電池は、例えば、外装ケースが薄い平板状の形態をなし、外装ケースがラミネートシートで形成されている形態でもよい。ラミネートシートは、絶縁性の高い素材で構成されている。この場合、単電池は、例えば二つ折りにされたラミネートシートの端部同士を熱融着することにより当該端部同士を封止して密閉された扁平状容器の内部空間を有する。この内部空間には、電極集合体、電解質、端子接続部、正極端子部の一部、および負極端子部の一部を含む電池本体部が内蔵されている。したがって、単電池は、扁平状容器の周縁部が封止されることにより、電池本体部が扁平状容器の内部に密封状態で収容されている。単電池は、扁平状容器から外方へ引き出された一対の電極端子を有する。 In the above-described embodiment, the unit cell included in the battery device may have, for example, a form in which the outer case is a thin flat plate and the outer case is formed of a laminate sheet. The laminate sheet is made of a highly insulating material. In this case, the unit cell has an inner space of a flat container that is sealed by sealing the ends of the laminate sheet that is folded in half, for example, by heat-sealing the ends. The internal space contains a battery main body portion including an electrode assembly, an electrolyte, a terminal connection portion, a part of the positive electrode terminal portion, and a part of the negative electrode terminal portion. Therefore, in the unit cell, the peripheral part of the flat container is sealed, so that the battery main body is housed in a sealed state inside the flat container. The unit cell has a pair of electrode terminals drawn outward from the flat container.
　前述の実施形態において電池装置が備える単電池として、例えば、円柱状の外形形状である単電池を用いてもよい。 For example, a unit cell having a cylindrical outer shape may be used as the unit cell included in the battery device in the above-described embodiment.
　前述の実施形態において、電池装置が備える電池は１個または複数の単電池で構成することができる。複数の単電池は、上下方向に積層された形態でもよいし、横方向に並べて積層された形態でもよい。 In the above-described embodiment, the battery provided in the battery device can be composed of one or a plurality of single cells. The plurality of unit cells may be stacked in the vertical direction or may be stacked in the horizontal direction.
　本開示は実施例を参照して記載されているが、本開示は開示された上記実施例や構造に限定されるものではないと理解される。寧ろ、本開示は、様々な変形例や均等範囲内の変形を包含する。加えて、本開示の様々な要素が、様々な組み合わせや形態によって示されているが、それら要素よりも多くの要素、あるいは少ない要素、またはそのうちの１つだけの要素を含む他の組み合わせや形態も、本開示の範疇や思想範囲に入るものである。 Although the present disclosure has been described with reference to embodiments, it is understood that the present disclosure is not limited to the above-described embodiments and structures. Rather, the present disclosure includes various modifications and modifications within the equivalent scope. In addition, although various elements of the present disclosure have been shown in various combinations and forms, other combinations or forms that include more or fewer elements than those elements, or only one of them. Are within the scope and spirit of the present disclosure.

Claims (16)

  1. 　電池（１３）と、
    　前記電池に電気的に接続されている回路基板（２）と、
    　前記電池に対する電力の入出力を制御するスイッチ装置であって、外面を形成する外装部（３０）が前記回路基板から離間した状態で設置されているスイッチ装置（３，４）と、
    　熱伝導性を有する材質によって形成されている放熱部材であって、前記スイッチ装置の熱が移動可能なように前記スイッチ装置の前記外装部に直接または熱伝導性部材（５）を介して間接的に接触している放熱部材（６，１０６，２０６，３０６，４０６）と、
    　備える電池装置。     A battery (13);
    A circuit board (2) electrically connected to the battery;
    A switch device for controlling input / output of electric power to the battery, wherein the exterior portion (30) forming the outer surface is installed in a state of being separated from the circuit board; and
    A heat dissipating member made of a material having thermal conductivity, so that the heat of the switch device can move, either directly on the exterior portion of the switch device or indirectly through a heat conductive member (5). A heat dissipating member (6, 106, 206, 306, 406) in contact with
    A battery device provided.
  2. 　前記スイッチ装置は、電気信号を伝達する信号線部（３１）と電力を伝達する電力線部（３２）とを有し、
    　前記電力線部は、前記回路基板には接続されず、前記電池に係る入出力端子（１４０，１４１）にバスバ（３３）またはハーネス（１３３）を介して連結されており、前記信号線部は前記回路基板に接続されている請求項１に記載の電池装置。     The switch device includes a signal line portion (31) for transmitting an electrical signal and a power line portion (32) for transmitting power.
    The power line portion is not connected to the circuit board, and is connected to the input / output terminals (140, 141) related to the battery via a bus bar (33) or a harness (133), and the signal line portion is The battery device according to claim 1 connected to a circuit board.
  3. 　前記放熱部材は、車両の一部である車両部材（７）へ熱移動可能な構成で前記車両部材に直接連結され、または熱伝導性を有する装着部材（７０）を介して連結されている請求項１または請求項２に記載の電池装置。 The heat dissipating member is directly connected to the vehicle member in a configuration capable of heat transfer to a vehicle member (7) which is a part of the vehicle, or is connected via a mounting member (70) having thermal conductivity. Item 3. The battery device according to Item 1 or Item 2.
  4. 　前記放熱部材は、前記電池が収容されているベースケース（１５）における熱伝導性を有したベース部（１５ａ）へ熱移動可能な構成で設置され、または前記ベースケースに一体に形成されている請求項１または請求項２に記載の電池装置。 The heat dissipating member is installed in a configuration capable of heat transfer to the base portion (15a) having thermal conductivity in the base case (15) in which the battery is accommodated, or is formed integrally with the base case. The battery device according to claim 1 or 2.
  5. 　前記放熱部材は、前記ベースケースの一部であって前記ベース部から起立する立壁部である請求項４に記載の電池装置。 The battery device according to claim 4, wherein the heat radiating member is a standing wall portion that is a part of the base case and rises from the base portion.
  6. 　前記スイッチ装置の前記外装部は、前記立壁部の上面に直接または前記熱伝導性部材を介して間接的に接触している請求項５に記載の電池装置。 The battery device according to claim 5, wherein the exterior portion of the switch device is in direct contact with the upper surface of the standing wall portion directly or indirectly through the heat conductive member.
  7. 　前記スイッチ装置の前記外装部は、前記立壁部の側面（６０）に直接または前記熱伝導性部材を介して間接的に接触している請求項５に記載の電池装置。 The battery device according to claim 5, wherein the exterior portion of the switch device is in direct contact with the side surface (60) of the standing wall portion directly or indirectly through the heat conductive member.
  8. 　前記スイッチ装置の前記外装部は、前記立壁部において前記電池寄りに位置する内側の側面（６０）に直接または前記熱伝導性部材を介して間接的に接触している請求項５に記載の電池装置。 The battery according to claim 5, wherein the exterior portion of the switch device is in direct contact with an inner side surface (60) located near the battery in the standing wall portion, directly or indirectly through the thermal conductive member. apparatus.
  9. 　前記スイッチ装置および前記放熱部材は、前記回路基板に対して低い位置に離間して設置されている請求項１から請求項８のいずれか一項に記載の電池装置。 The battery device according to any one of claims 1 to 8, wherein the switch device and the heat dissipation member are spaced apart from each other at a low position with respect to the circuit board.
  10. 　前記スイッチ装置および前記放熱部材は、前記回路基板に対して高い位置に離間して設置されている請求項１から請求項８のいずれか一項に記載の電池装置。 The battery device according to any one of claims 1 to 8, wherein the switch device and the heat dissipation member are spaced apart from each other at a high position with respect to the circuit board.
  11. 　前記スイッチ装置は、前記スイッチ装置および前記回路基板を平面視した場合に、前記スイッチ装置において前記回路基板と重なる重なり部分（３０ｃ）と、前記スイッチ装置において前記回路基板と重ならない残部（３０ｄ）と、を有するように設置されている請求項１から請求項５のいずれか一項に記載の電池装置。 The switch device includes an overlapping portion (30c) that overlaps the circuit board in the switch device and a remaining portion (30d) that does not overlap the circuit board in the switch device when the switch device and the circuit board are viewed in plan. The battery device according to any one of claims 1 to 5, wherein the battery device is installed so as to have.
  12. 　前記残部の体積は前記重なり部分の体積以上である請求項１１に記載の電池装置。 The battery device according to claim 11, wherein the volume of the remaining portion is equal to or greater than the volume of the overlapping portion.
  13. 　前記スイッチ装置は、前記外装部の幅寸法が厚さ寸法よりも長くなる外形形状であり、
    　前記スイッチ装置は、厚さ方向が前記回路基板の主面に対して沿うような姿勢でまたは傾くような姿勢で設置されている請求項１から請求項１２のいずれか一項に記載の電池装置。     The switch device has an outer shape in which a width dimension of the exterior part is longer than a thickness dimension,
    The battery device according to any one of claims 1 to 12, wherein the switch device is installed in a posture such that a thickness direction thereof is along or inclined with respect to a main surface of the circuit board. .
  14. 　前記電池は、電極端子（１３０）が横方向に露出する姿勢で設置されており、
    　前記スイッチ装置は、前記電池に対して前記電極端子寄りに設置されている請求項１から請求項１３のいずれか一項に記載の電池装置。     The battery is installed such that the electrode terminal (130) is exposed in the lateral direction,
    The battery device according to any one of claims 1 to 13, wherein the switch device is disposed closer to the electrode terminal with respect to the battery.
  15. 　前記電池は、それぞれ複数の単電池が積層された複数の電池積層体（１３ａ，１３ｂ）を含み、
    　前記スイッチ装置は、複数の前記電池積層体のうち、前記単電池の積層数が少ない方の前記電池積層体（１３ａ）寄りに設置されている請求項１から請求項１４のいずれか一項に記載の電池装置。     The battery includes a plurality of battery stacks (13a, 13b) in which a plurality of single cells are stacked,
    15. The switch device according to claim 1, wherein the switch device is installed closer to the battery stack (13 a) having a smaller number of stacked single cells among the plurality of battery stacks. 15. The battery device described.
  16. 　前記スイッチ装置は、前記電池装置の外部に設けられている外部電池（１７）に対する電力の入出力を制御する第１のスイッチ装置（３）と、前記電池装置に含まれる前記電池に対する電力の入出力を制御する第２のスイッチ装置（４）と、を含んで構成されている請求項１から請求項１５のいずれか一項に記載の電池装置。 The switch device includes a first switch device (3) for controlling input / output of power to / from an external battery (17) provided outside the battery device, and input of power to the battery included in the battery device. The battery device according to any one of claims 1 to 15, comprising a second switch device (4) for controlling an output.
PCT/JP2017/036054 2016-10-14 2017-10-04 Battery device WO2018070310A1 (en)

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