WO2014162963A1 - Battery module - Google Patents

Battery module Download PDF

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Publication number
WO2014162963A1
WO2014162963A1 PCT/JP2014/058762 JP2014058762W WO2014162963A1 WO 2014162963 A1 WO2014162963 A1 WO 2014162963A1 JP 2014058762 W JP2014058762 W JP 2014058762W WO 2014162963 A1 WO2014162963 A1 WO 2014162963A1
Authority
WO
WIPO (PCT)
Prior art keywords
connector
battery pack
battery
vehicle
mounting plate
Prior art date
Application number
PCT/JP2014/058762
Other languages
French (fr)
Japanese (ja)
Inventor
禎広 小宮
Original Assignee
Ｎｅｃエナジーデバイス株式会社
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
Application filed by Ｎｅｃエナジーデバイス株式会社 filed Critical Ｎｅｃエナジーデバイス株式会社
Publication of WO2014162963A1 publication Critical patent/WO2014162963A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/20—Electric propulsion with power supplied within the vehicle using propulsion power generated by humans or animals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/66—Arrangements of batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • B60L58/21—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having the same nominal voltage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
    • B62M6/80—Accessories, e.g. power sources; Arrangements thereof
    • B62M6/90—Batteries
    • 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
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2200/00—Type of vehicles
    • B60L2200/12—Bikes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2270/00—Problem solutions or means not otherwise provided for
    • B60L2270/10—Emission reduction
    • B60L2270/14—Emission reduction of noise
    • B60L2270/145—Structure borne vibrations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5202—Sealing means between parts of housing or between housing part and a wall, e.g. sealing rings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
    • 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
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the present invention relates to a battery pack incorporating a secondary battery, and an electric vehicle equipped with the battery pack.
  • a battery pack incorporating a secondary battery is used as a power source used for vehicles including electric cars, electric motorcycles, electrically assisted bicycles, etc., and power sources used in houses and buildings.
  • a lithium ion secondary battery which is relatively light in weight and has a high energy density, is often used as a battery pack for vehicles such as an electric motorcycle and an electric power assisted bicycle.
  • the lightweight secondary battery pack is attached to a part of the frame of the vehicle, and the connector fixed on the battery pack side is connected to the connector fixed on the vehicle side. Connection is made.
  • Patent Document 1 describes a battery pack attached to a frame portion of an electric bicycle.
  • the battery pack for vehicles receives the vibration which is continuously received while the vehicle is traveling, and may be subjected to the impact due to the overturn which may occur regardless of the traveling or the stop.
  • the connector fixed on the battery pack side is inserted into the connector fixed on the vehicle side.
  • the weight of the battery pack is also supported by the connecting portion between the connectors, the fixing portion of the connector on the battery pack side, or the fixing portion of the connector on the vehicle side.
  • the connecting portion between the connectors, the fixing portion of the connector on the battery pack side, or the fixing portion of the connector on the vehicle side As a result, when vibration or impact is applied, there is a risk that the fixed portion of the connector, the connection portion of the connector, or the connector itself may be damaged.
  • the present invention is a battery pack provided with a battery container that accommodates at least a battery element and a connector, wherein the battery container includes an opening through which the connector is exposed, and the insertion direction of the connector in a part of the battery container
  • the problem can be solved by providing a battery pack provided with a protrusion that suppresses movement of the battery pack.
  • the present invention it is possible to reduce the load applied to the connector of the battery pack mounted on the vehicle and the fixed portion of the connector, and to reduce the impact from the outside.
  • the load applied to the connector can be reduced without changing the design of the battery container, and the degree of freedom in arranging the battery pack on the vehicle can be increased.
  • FIG. 1 is a schematic view showing an example in which the battery pack of the present invention is mounted on a vehicle.
  • FIG. 2 is an external perspective view schematically showing an example of the battery pack of the present invention.
  • FIG. 3 is an exploded perspective view schematically showing an example of the battery pack of the present invention.
  • FIG. 4 is an external appearance perspective view schematically showing another example of the battery pack of the present invention.
  • FIG. 5 is an exploded perspective view schematically showing another example of the battery pack of the present invention.
  • FIG. 6 is an exploded perspective view schematically showing another example of the battery pack of the present invention.
  • FIG. 1 is a schematic view when the battery pack of the present invention is disposed in a vehicle.
  • the battery pack 1 is disposed between the seat tube 120 located between the saddle 110 and the pedal 150 and the rear wheel 170.
  • the battery pack 1 has a connector 3a fixed downward with respect to the battery container 2, and is lowered along the seat tube from the saddle 110 side of the vehicle to connect with the connector fixed upward to the vehicle,
  • the connection portion 300 is formed.
  • the battery pack 1 is fixed by a lock member 130 or the like so that the connector is not detached.
  • the battery pack is disposed to be inclined with respect to the vertical direction along the sheet tube 120, but may be disposed in the vertical direction or in the horizontal direction.
  • the battery pack placement location is not limited to between the seat tube and the rear wheel, and can be changed as appropriate, and may be placed along a frame other than the seat tube, or always placed in the direction along the frame. It does not have to be.
  • FIG. 2 is an external perspective view schematically showing an example of the battery pack of the present invention.
  • 2A is an external perspective view seen from the side where the connector 3a is disposed
  • FIG. 2B is an enlarged view of a portion where the connector 3a of FIG. 2A is disposed.
  • the battery pack 1 has a structure in which a secondary battery, a protective circuit board, a connector 3 and the like are accommodated in a resin battery case 2 and, in this case, the cover 2a of the battery case and the body 2b of the battery case are fitted.
  • the battery case 2 is formed by combining them.
  • a grip portion which can carry the battery pack may be provided in part of the battery container, and in FIG. 2A, it is opposite to one side where the connector is disposed. A grip is provided on one side located on the side.
  • the connector 3a faces the opening 4 provided on one surface of the battery case and is accommodated inside the battery case, and is arranged to be connectable with a connector arranged on the vehicle side.
  • a protrusion 5 is provided outside the battery case and around the opening 4. The protrusion 5 is in contact with a part of the vehicle and serves as a part for supporting the battery pack 1.
  • the battery pack is supported in a state in which the movement of the connector in the insertion direction is suppressed by the projection, so that loads such as vibration or impact are concentrated on the fixing portion between the connector and the battery container or the connector connection portion. You can prevent it.
  • the battery pack is supported only near the connector before attaching the lock member. Therefore, the stress applied to the connector connection portion 300 and the stress applied to the portion where the connector is attached to the battery pack are supported by supporting the battery pack with the protrusion 5 in contact with the vehicle side and suppressing the movement of the connector in the insertion direction. Can be significantly reduced.
  • the thickness of the projecting portion 5 is preferably 0.5 mm or more, more preferably 1 mm or more.
  • the thickness of the projection varies depending on the specification of the connector, it is necessary to make the thickness smaller than the thickness which does not disturb the electrical connection of the connector.
  • a waterproof member having a rigidity lower than that of the protrusion may be arranged around the opening 4 (not shown) around the opening 4 in consideration of waterproofness.
  • the waterproof member may be disposed between the opening and the projection, or may be disposed so as to surround the opening and the projection.
  • the protruding portion 5 may have any rigidity as long as the movement of the connector in the insertion direction can be suppressed.
  • the protruding portion 5 may be made of resin, metal, or a combination with other materials including these.
  • the protrusion may be formed at the same time as molding the battery case, or another member may be attached.
  • the projection 5 in FIG. 2 is formed on the outer surface of the battery capacity surface in which the opening is formed, thereby providing the simplest structure for preventing the breakage of the connector without complicating the structure of the battery container. If the movement in the insertion direction of the connector can be suppressed, the position of the protrusion does not necessarily have to be the surface in which the opening is formed.
  • a central portion of the battery case may be provided with a portion for suppressing movement of the battery case in the insertion direction, or a portion for locking the battery case to the vehicle in a direction opposite to the insertion direction of the battery case It is also good.
  • FIG. 3 is an exploded perspective view schematically showing an example of the battery pack of the present invention.
  • FIG. 3A schematically shows an exploded perspective view in which the cover portion 2a of the battery container of the battery pack of FIG. 2A is removed and the connector portion is disassembled
  • FIG. 3B shows the portion where the connector is disposed in FIG. It is an exploded perspective view which expanded.
  • the body portion 2b of the battery container accommodates the secondary battery 6, the substrate holder 7 accommodating the circuit board, and the connector 3a, which are electrically connected by lead wires or the like.
  • a plurality of lithium ion secondary batteries are stacked, and two assembled batteries in which the positive electrode terminal and the negative electrode terminal are drawn from the same end face are accommodated, and the two secondary batteries are drawn out the electrode terminals of the positive electrode and the negative electrode
  • the faces are arranged to face each other and connected in series.
  • An input / output terminal and a sense line are drawn out from the assembled batteries connected in series, and these wires are connected to the connector via a printed circuit board on which a protective circuit and the like are arranged.
  • a partition wall is provided between the secondary battery 6, the substrate holder 7 and the connector 3a, leaving a path for arranging a lead wire, thereby enhancing the strength of the battery container 2.
  • the printed circuit board may be accommodated in a holder 7 made of synthetic resin, and the electronic parts on the substrate may be covered with a resin or the like to provide waterproofing.
  • the connector 3a can be attached to the connector insertion portion 30a of the connector attachment plate 30, and can be fixed by inserting a screw or the like into through holes provided in each of the connector and the connector attachment plate 30.
  • the connector mounting plate 30 is attached by inserting both ends of the connector mounting plate into grooves 20a and 20b formed inside the body 2b of the battery container and on both sides of the opening, and the connector is exposed from the opening 4 By so doing, the main body of the connector can be disposed in the connector housing portion 200.
  • the grooves 20a and 20b are formed such that the bottoms of the grooves face each other, and the grooves 20a and 20b can also be formed on the lid 2a of the battery container. In that case, when the lid is closed, the connector attachment plate holds the groove portion of the lid portion 2a of the battery container in the same manner.
  • the groove does not necessarily have to be provided so as to surround the entire periphery of the opening, but may be provided in a part of the periphery of the opening so as not to drop the connector mounting plate. In consideration of the stability when arranging the connector mounting plate, it is preferable to form a groove on at least a pair of inner surfaces of the opposed inner surfaces of the battery container 2 and arrange so that the bottoms of the grooves face each other.
  • the length of the groove is preferably 50% or more of the length in the groove direction of the inner surface in which the groove is disposed.
  • the connector mounting plate 30 preferably has a thickness that just fits without moving in the groove spacing of the groove 20a and inside the groove of the groove 20b.
  • the longitudinal dimension of the connector mounting plate is smaller than the distance between the bottom of the groove receiving one longitudinal end of the mounting plate and the bottom of the groove receiving the other longitudinal end.
  • the lateral dimension of the connector mounting plate is smaller than the distance between the bottom of the groove receiving one lateral end of the mounting plate and the bottom of the groove receiving the other lateral end. .
  • the connector mounting plate can be moved along the groove in the longitudinal and lateral directions (XY direction in the figure).
  • the connectors when attaching the battery pack to the vehicle, even if the positions of the connectors are slightly deviated due to variations in the mounting position in production, the connectors can be reliably slid to the positions where the connectors on the battery pack can be connected. It can be connected.
  • a through hole is provided in a part of the connector, and it is known that the connector can be moved by the size difference from the diameter of the screw inserted into the through hole.
  • the movable range due to the dimensional difference in screw diameter is often insufficient, and the configuration of the present invention is extremely effective. While the vehicle is traveling, it receives continuous vibration, but the connector on the battery pack side can slide sufficiently in the XY direction according to the vibration, thereby reducing stress on the connector connection. can do.
  • the thickness of the connector mounting plate is made approximately equal to the distance between the grooves in the groove, the sliding direction of the connector is substantially restricted within the XY plane, and the insertion direction (Z direction in the figure) It is designed to prevent movement or twisting to occur. Therefore, even when connecting with the connector on the vehicle side, the connector can move only in the XY plane to realize stable connection between the connectors. Also, by providing a part on the outer surface of the battery container to be in contact with the vehicle and suppressing movement in the insertion direction of the connector, the connector attachment plate is grooved even when a large load is applied in the insertion direction of the connector. It is possible to reduce the load applied to the part inserted in the Therefore, even if the connector mounting plate is not fixed to the battery container side with screws or the like and the connector mounting plate is fitted into the groove, the connector mounting plate can be prevented from falling off due to vibration.
  • the external dimensions of the connector mounting plate can be maintained as it is, and the configuration can be coped with by merely changing the shape of the connector insertion portion. Therefore, it becomes possible to cope with different connectors much more simply than changing the shape on the battery container side.
  • FIG. 4 is an external perspective view schematically showing a battery pack when a connector different from that of FIG. 2 is used.
  • FIG. 4A is an external perspective view seen from the side where the connector 3b is disposed
  • FIG. 4B is an enlarged view of a portion where the connector is disposed in FIG. 4A.
  • FIG. 5A shows an exploded perspective view of the battery container of FIG. 4A from which the cover 2a of the battery container is removed and the connector portion is disassembled.
  • FIG. 5B is an enlarged perspective view of the portion where the connector is disposed in FIG. FIG.
  • FIGS. 2 and 3 The difference from FIGS. 2 and 3 is that a connector 3 b having a flange 31 is used instead of the connector 3 a and the connector mounting plate 30, and the other points are the same as in FIGS. 2 and 3. Therefore, the detailed description about the same part is omitted.
  • the connector 3 b is provided with a flange 31 which can be inserted around the connector and along the gap between the grooves 20 a and 20 b.
  • the flanges shown in FIGS. 5A and 5B are formed so as to project a part of the connector, they may have other members attached thereto, and, like FIGS. 2 and 3, this connector may be used. You may attach to the connector attachment plate which can be penetrated.
  • the external shape (dimensions in the X and Y directions in the figure) of the flange 31 shown in FIGS. 4 and 5 is substantially the same as the connector mounting plate 30 in FIGS. 2 and 3. Therefore, the connector 3 b can slide along the groove along the XY direction, and the connector can be reliably connected in the same manner as the connector 3 b attached to the connector attachment plate 30. Moreover, even if vibration is continuously received while the vehicle is traveling, it is possible to reduce the stress applied to the battery pack, the portion where the connector is attached to the vehicle side, and the connection portion of the connector. On the other hand, since the thickness of the flange is substantially equal to the distance between the grooves of the groove portion, movement in the insertion direction is hardly caused even when connecting with the connector on the vehicle side, and stable connection of the connector can be realized.
  • the diameter of the hole through which the screw is inserted is It is conceivable to make it larger. Even in this case, it is preferable to provide the protruding portion 5 outside the battery container and at all or part of the periphery of the opening 4.
  • the screw may be attached to the seat surface by applying a load to the extent that the connector can move, or by providing a space between the connector and the seat surface. In this embodiment, the number of screws and the mounting space are increased and the mounting ease is reduced, as compared with the case where the groove is used to movably support in the XY direction, but concentration of extreme load on the connector is reduced. Can be avoided.
  • a screw hole 201 is provided in a part of the connector accommodating portion 200 for attaching the connector mounting plate 30 b, and the screw hole is provided on the top of the projection 202.
  • the connector mounting plate 30b is provided with notches 30c on both sides of the connector insertion portion, and the size of the notch is made larger than the external shape of the projection 202 of the screw hole inserted into the cutout 30c. ing.
  • the connector mounting plate can be displaced relative to the battery case by the size of the outer shape of the protrusion and the size of the notch.
  • the connector itself can be provided with a through hole in a part of the connector and the connector can be moved by the size difference with the diameter of a screw or the like inserted through the through hole, the connector attachment by this configuration If the plate itself is also movable, even if the battery pack is enlarged, the movable range is expanded and stable connector connection is possible.
  • the battery pack of the present invention can provide an assembled battery and a battery pack that are highly resistant to vibration and shock.
  • SYMBOLS 1 battery pack, 2 ... battery container, 2a ... lid part of battery container, 2b ... body part, 20a, 20b ... groove part, 200 ... connector accommodating part, 3a, 3b ... Connector, 30 ... Connector mounting plate, 30a ... Connector insertion part, 30b ... Connector mounting plate, 30c ... Notched part, 31 ... Flange, 4 ... Opening part, DESCRIPTION OF SYMBOLS 5 ... Projection part, 6 ... Secondary battery, 7 ... Substrate holder, 100 ... Vehicle, 110 ... Saddle, 120 ... Seat tube, 130 ...
  • Lock member, 150 ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇

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Abstract

[Problem] To provide a pack that is less susceptible to the negative effects of an external impact. [Solution] Provided is a battery pack having a battery housing that houses at least a battery element and a connector. The battery housing is provided with an opening from which the connector is exposed. A protrusion is provided to a part of the battery housing in order to prevent the battery pack from moving in the insertion direction of the connector.

Description

電池モジュールBattery module
　本発明は、二次電池を内蔵する電池パック、および電池パックを搭載した電動車両に関する。 The present invention relates to a battery pack incorporating a secondary battery, and an electric vehicle equipped with the battery pack.
　電気自動車、電動バイク、電動アシスト自転車等をはじめとする車両に用いる電源や、家屋やビル等で用いられる電源には、二次電池を組み込んだ電池パックを用いている。これらのうち、電動バイクや電動アシスト自転車等の車両に用いる電池パックには、電池のなかでは比較的軽量でエネルギー密度の高いリチウムイオン二次電池を用いることが多い。　軽量化した二次電池パックは、車両のフレームの一部に取り付けて、電池パック側に固定したコネクタを車両側に固定したコネクタに連結する簡単な構成で電池と車両側の機器との電気的な接続を行っている。特許文献１には、電動自転車のフレーム部分に電池パックを取り付けたものが記載されている。 A battery pack incorporating a secondary battery is used as a power source used for vehicles including electric cars, electric motorcycles, electrically assisted bicycles, etc., and power sources used in houses and buildings. Among these batteries, a lithium ion secondary battery, which is relatively light in weight and has a high energy density, is often used as a battery pack for vehicles such as an electric motorcycle and an electric power assisted bicycle. The lightweight secondary battery pack is attached to a part of the frame of the vehicle, and the connector fixed on the battery pack side is connected to the connector fixed on the vehicle side. Connection is made. Patent Document 1 describes a battery pack attached to a frame portion of an electric bicycle.
特開２０１２－２１２５８９号公報JP 2012-212589 A
　電動アシスト自転車等や電動バイク等の車両に搭載する電池パックは軽量化が進んでいるといっても、その重量は携帯機器用の小型の電池パックに比べると非常に大きいものとなる。
　車両用の電池パックは、車両の走行中に受ける振動を継続的に受け、走行中や停止中に関わらず生じ得る転倒による衝撃等を受ける場合もある。電動アシスト自転車や電動バイク等の車両のフレーム等に電池パックを取り付ける場合、車両側に固定したコネクタに対して、電池パック側に固定したコネクタを差し込むことで取り付けている。 Although the weight reduction of the battery pack mounted in vehicles, such as an electrically assisted bicycle etc. and an electric motorcycle, is advancing, but the weight becomes very large compared with the small battery pack for portable devices.
The battery pack for vehicles receives the vibration which is continuously received while the vehicle is traveling, and may be subjected to the impact due to the overturn which may occur regardless of the traveling or the stop. When the battery pack is attached to a frame or the like of a vehicle such as an electrically assisted bicycle or an electric motorcycle, the connector fixed on the battery pack side is inserted into the connector fixed on the vehicle side.
　したがって、電池パックの重量を、コネクタ同士の接続部分や、電池パック側のコネクタの固定部分または車両側のコネクタの固定部分でも支えることになる。その結果、振動や衝撃が加わると、コネクタの固定部分やコネクタの接続部分、またはコネクタ自体が破損するおそれがあった。 Therefore, the weight of the battery pack is also supported by the connecting portion between the connectors, the fixing portion of the connector on the battery pack side, or the fixing portion of the connector on the vehicle side. As a result, when vibration or impact is applied, there is a risk that the fixed portion of the connector, the connection portion of the connector, or the connector itself may be damaged.
　これらの破損を防ぐためには、電池パックの周囲の容器部分のコネクタを配置する部位の強度を大きくすることや、コネクタの周囲に衝撃吸収材を配置することが考えられる。しかし、コネクタの形状は車両のデザインや仕様等によって異なるため、その都度、容器の形状を変えていては設計、製造の負担となるのはもちろん、コスト増加の要因や、車両重量の増加にもつながり好ましくない。
　そこで本発明は、二次電池を組み込んだ電池パックを車両に固定する場合に、コネクタの取り付け部分やコネクタ同士の接続部分に加わるストレスを簡便な方法で低減し、外部からの衝撃に対する耐久性が高い電池パックおよび車両を提供するものである。 In order to prevent these breakages, it is conceivable to increase the strength of the portion where the connector of the container portion around the battery pack is arranged or to arrange the shock absorber around the connector. However, since the shape of the connector varies depending on the design and specifications of the vehicle, changing the shape of the container each time will not only burden the design and manufacture, but also increase the cost and increase the weight of the vehicle. Unfavorable.
Therefore, in the present invention, when fixing a battery pack incorporating a secondary battery to a vehicle, the stress applied to the mounting portion of the connector and the connecting portion between the connectors is reduced by a simple method, and the durability against external impact is To provide a high battery pack and a vehicle.
　本発明は、少なくとも電池要素とコネクタとを収容する電池容器を備える電池パックであって、前記電池容器は、前記コネクタが露出する開口部を備え、前記電池容器の一部に、コネクタの挿通方向に対して電池パックが移動することを抑制する突出部を備える電池パックを提供することで、課題を解決することができる。 The present invention is a battery pack provided with a battery container that accommodates at least a battery element and a connector, wherein the battery container includes an opening through which the connector is exposed, and the insertion direction of the connector in a part of the battery container On the other hand, the problem can be solved by providing a battery pack provided with a protrusion that suppresses movement of the battery pack.
　本発明によれば、車両に搭載した電池パックのコネクタやコネクタの固定部分に加わる負荷を低減し、外部からの衝撃を低減することができる。また、コネクタの種類が変わったときでも、電池容器の設計を変更することなく、コネクタに加わる負荷を低減することができ、電池パックの車両への配置の自由度を大きくすることができる。 According to the present invention, it is possible to reduce the load applied to the connector of the battery pack mounted on the vehicle and the fixed portion of the connector, and to reduce the impact from the outside. In addition, even when the type of connector changes, the load applied to the connector can be reduced without changing the design of the battery container, and the degree of freedom in arranging the battery pack on the vehicle can be increased.
図１は、本発明の電池パックを車両に搭載した一例を示す模式図である。FIG. 1 is a schematic view showing an example in which the battery pack of the present invention is mounted on a vehicle. 図２は、本発明の電池パックの一例を模式的に示す外観斜視図である。FIG. 2 is an external perspective view schematically showing an example of the battery pack of the present invention. 図３は、本発明の電池パックの一例を模式的に示す分解斜視図である。FIG. 3 is an exploded perspective view schematically showing an example of the battery pack of the present invention. 図４は、本発明の電池パックの他の例を模式的に示す外観斜視図である。FIG. 4 is an external appearance perspective view schematically showing another example of the battery pack of the present invention. 図５は、本発明の電池パックの他の例を模式的に示す分解斜視図である。FIG. 5 is an exploded perspective view schematically showing another example of the battery pack of the present invention. 図６は、本発明の電池パックの他の例を模式的に示す分解斜視図である。FIG. 6 is an exploded perspective view schematically showing another example of the battery pack of the present invention.
　図１は本発明の電池パックを車両に配置した場合の模式図である。
　ここでは、電池パック１は、サドル１１０とペダル１５０との間に位置するシートチューブ１２０と、後輪１７０との間に配置されている。電池パック１は、電池容器２に対して下向きにコネクタ３ａが固定されており、車両のサドル１１０側からシートチューブに沿うように下降させて、車両に上向きに固定されたコネクタと連結し、コネクタ接続部３００を形成する。さらに、コネクタが外れないようにロック部材１３０などで電池パック１を固定している。 FIG. 1 is a schematic view when the battery pack of the present invention is disposed in a vehicle.
Here, the battery pack 1 is disposed between the seat tube 120 located between the saddle 110 and the pedal 150 and the rear wheel 170. The battery pack 1 has a connector 3a fixed downward with respect to the battery container 2, and is lowered along the seat tube from the saddle 110 side of the vehicle to connect with the connector fixed upward to the vehicle, The connection portion 300 is formed. Furthermore, the battery pack 1 is fixed by a lock member 130 or the like so that the connector is not detached.
　図１において、電池パックはシートチューブ１２０に沿うように鉛直方向に対して傾斜した状態で配置されているが、鉛直方向に配置しても、水平方向に配置してもよい。また、電池パック配置場所は、シートチューブと後輪とのあいだに限らず適宜変更可能であり、シートチューブ以外のフレームに沿うように配置しても良いし、必ずしもフレームに沿った向きで配置しなくてもよい。 In FIG. 1, the battery pack is disposed to be inclined with respect to the vertical direction along the sheet tube 120, but may be disposed in the vertical direction or in the horizontal direction. Also, the battery pack placement location is not limited to between the seat tube and the rear wheel, and can be changed as appropriate, and may be placed along a frame other than the seat tube, or always placed in the direction along the frame. It does not have to be.
　図２は、本発明の電池パックの一例を模式的に示す外観斜視図である。図２Ａは、コネクタ３ａを配置した面側から見た外観斜視図であり、図２Ｂは、図２Ａのコネクタ３ａが配置された部分の拡大図である。電池パック１は樹脂製の電池容器２に二次電池、保護回路基板、コネクタ３等を収容した構造になっており、ここでは、電池容器の蓋部２ａと電池容器の身部２ｂとを嵌合させることで電池容器２が形成されている。電池パックを車両に配置する際に作業性が良くなるように、電池容器の一部に電池パックを持ち運び可能な握り部を設けてもよく、図２Ａにおいては、コネクタが配置された一面と反対側に位置する一面に握り部を設けている。 FIG. 2 is an external perspective view schematically showing an example of the battery pack of the present invention. 2A is an external perspective view seen from the side where the connector 3a is disposed, and FIG. 2B is an enlarged view of a portion where the connector 3a of FIG. 2A is disposed. The battery pack 1 has a structure in which a secondary battery, a protective circuit board, a connector 3 and the like are accommodated in a resin battery case 2 and, in this case, the cover 2a of the battery case and the body 2b of the battery case are fitted. The battery case 2 is formed by combining them. In order to improve the workability when disposing the battery pack in the vehicle, a grip portion which can carry the battery pack may be provided in part of the battery container, and in FIG. 2A, it is opposite to one side where the connector is disposed. A grip is provided on one side located on the side.
　コネクタ３ａは、電池容器の一面に設けられた開口部４に面して電池容器の内部に収容されており、車両側に配置されたコネクタと接続可能に配置されている。電池容器の外部であって開口部４の周囲には、突出部５が設けられている。突出部５は車両の一部と接触し、電池パック１を支持する部分となる。この突出部により、コネクタの挿入方向への移動が抑制された状態で電池パックが支持されるので、コネクタと電池容器との固定部や、コネクタの接続部に、振動や衝撃等の負荷が集中することを防ぐことができる。 The connector 3a faces the opening 4 provided on one surface of the battery case and is accommodated inside the battery case, and is arranged to be connectable with a connector arranged on the vehicle side. A protrusion 5 is provided outside the battery case and around the opening 4. The protrusion 5 is in contact with a part of the vehicle and serves as a part for supporting the battery pack 1. The battery pack is supported in a state in which the movement of the connector in the insertion direction is suppressed by the projection, so that loads such as vibration or impact are concentrated on the fixing portion between the connector and the battery container or the connector connection portion. You can prevent it.
　特に、電池パック１に固定したコネクタ３ａを車両側のコネクタ（図示せず）に挿通する際には、ロック部材を取り付ける前は、電池パックをコネクタ付近のみで支持することになる。したがって突出部５が車両側と接触し、コネクタの挿入方向への移動を抑制した状態で電池パックを支持することで、コネクタ接続部３００に加わるストレスや電池パックにコネクタを取り付けた部分に加わるストレスを大幅に低減することができる。 In particular, when the connector 3a fixed to the battery pack 1 is inserted into a connector (not shown) on the vehicle side, the battery pack is supported only near the connector before attaching the lock member. Therefore, the stress applied to the connector connection portion 300 and the stress applied to the portion where the connector is attached to the battery pack are supported by supporting the battery pack with the protrusion 5 in contact with the vehicle side and suppressing the movement of the connector in the insertion direction. Can be significantly reduced.
　一方で、電池パックを挿通するときの荷重の殆どは突出部が受けることになるため、突出部５の厚みは０．５ｍｍ以上とするのが好ましく、より好ましくは１ｍｍ以上とすることが好ましい。突出部の厚みはコネクタの仕様によって異なるが、コネクタの電気的な接続が阻害されることがないような厚みより小さくすることが必要である。
　また、コネクタの周囲には、防水性を考慮して、開口部４の周囲に突出部よりも剛性の低い防水部材を配置してもよい（図示せず）。防水部材は、開口部と突出部の間に配置してもよいし、開口部と突出部とを囲むように配置してもよい。突出部５は、コネクタの挿通方向への移動を抑制できる程度の剛性を有するものであればよく、たとえば樹脂製、金属製、あるいはこれらを含むその他の材料との組み合わせでも良い。突出部は電池容器を成型するときに同時に形成したものでも良いし、別の部材を取り付けても良い。 On the other hand, since most of the load when the battery pack is inserted is received by the projecting portion, the thickness of the projecting portion 5 is preferably 0.5 mm or more, more preferably 1 mm or more. Although the thickness of the projection varies depending on the specification of the connector, it is necessary to make the thickness smaller than the thickness which does not disturb the electrical connection of the connector.
In addition, a waterproof member having a rigidity lower than that of the protrusion may be arranged around the opening 4 (not shown) around the opening 4 in consideration of waterproofness. The waterproof member may be disposed between the opening and the projection, or may be disposed so as to surround the opening and the projection. The protruding portion 5 may have any rigidity as long as the movement of the connector in the insertion direction can be suppressed. For example, the protruding portion 5 may be made of resin, metal, or a combination with other materials including these. The protrusion may be formed at the same time as molding the battery case, or another member may be attached.
　また、図２における突出部５は、開口部を形成した電池容面の外面に形成することで電池容器の構造を複雑化することなく、コネクタの破損を防ぐ最も簡便な構造となっているが、コネクタの挿通方向の移動を抑制することができれば、突出部の位置は必ずしも開口部を形成した面である必要はない。たとえば、電池容器の中央部分に電池容器の挿通方向への移動を抑制する部分を設けてもよいし、電池容器の挿通方向とは逆の方向に電池容器を車両に係止する部分を設けてもよい。 In addition, the projection 5 in FIG. 2 is formed on the outer surface of the battery capacity surface in which the opening is formed, thereby providing the simplest structure for preventing the breakage of the connector without complicating the structure of the battery container. If the movement in the insertion direction of the connector can be suppressed, the position of the protrusion does not necessarily have to be the surface in which the opening is formed. For example, a central portion of the battery case may be provided with a portion for suppressing movement of the battery case in the insertion direction, or a portion for locking the battery case to the vehicle in a direction opposite to the insertion direction of the battery case It is also good.
　図３は、本発明の電池パックの一例を模式的に示す分解斜視図である。図３Ａは、図２Ａの電池パックの電池容器の蓋部２ａを取り除き、コネクタ部分を分解した分解斜視図を模式的に示したものであり、図３Ｂは、図３Ａにおいてコネクタを配置した部分を拡大した分解斜視図である。
　電池容器の身部２ｂには、二次電池６、回路基板を収容した基板ホルダ７およびコネクタ３ａを収容しており、これらをリード線等で電気的に接続している。ここでは、複数のリチウムイオン二次電池を積層し、正極端子と負極端子を同じ端面から引き出した組電池を２つ収容しており、２つの二次電池は正極および負極の電極端子を引き出した面を対向して配置して、直列に接続している。直列に接続した組電池からは入出力端子やセンス線を引き出しており、これらの配線を保護回路等を配置したプリント基板を介してコネクタに接続している。
　二次電池６、基板ホルダ７およびコネクタ３ａの間には、リード線を配置する経路を残して隔壁を設けており、電池容器２の強度を高めている。プリント基板を、合成樹脂製のホルダ７に収容しており、また、基板上の電子部品を樹脂等で被覆して防水対策を施してもよい。 FIG. 3 is an exploded perspective view schematically showing an example of the battery pack of the present invention. FIG. 3A schematically shows an exploded perspective view in which the cover portion 2a of the battery container of the battery pack of FIG. 2A is removed and the connector portion is disassembled, and FIG. 3B shows the portion where the connector is disposed in FIG. It is an exploded perspective view which expanded.
The body portion 2b of the battery container accommodates the secondary battery 6, the substrate holder 7 accommodating the circuit board, and the connector 3a, which are electrically connected by lead wires or the like. Here, a plurality of lithium ion secondary batteries are stacked, and two assembled batteries in which the positive electrode terminal and the negative electrode terminal are drawn from the same end face are accommodated, and the two secondary batteries are drawn out the electrode terminals of the positive electrode and the negative electrode The faces are arranged to face each other and connected in series. An input / output terminal and a sense line are drawn out from the assembled batteries connected in series, and these wires are connected to the connector via a printed circuit board on which a protective circuit and the like are arranged.
A partition wall is provided between the secondary battery 6, the substrate holder 7 and the connector 3a, leaving a path for arranging a lead wire, thereby enhancing the strength of the battery container 2. The printed circuit board may be accommodated in a holder 7 made of synthetic resin, and the electronic parts on the substrate may be covered with a resin or the like to provide waterproofing.
　コネクタ３ａを、コネクタ取り付けプレート３０のコネクタ挿通部３０ａに取り付けて、コネクタとコネクタ取り付けプレート３０とのそれぞれに設けた貫通孔などにネジなどを挿通することで固定することができる。コネクタ取り付けプレート３０を、電池容器の身部２ｂの内側であって、開口部の両側に形成した溝部２０ａ、２０ｂにコネクタ取り付けプレートの両端を挿入して取り付けて、開口部４からコネクタが露出するようにすることで、コネクタの本体をコネクタ収容部２００に配置することができる。 The connector 3a can be attached to the connector insertion portion 30a of the connector attachment plate 30, and can be fixed by inserting a screw or the like into through holes provided in each of the connector and the connector attachment plate 30. The connector mounting plate 30 is attached by inserting both ends of the connector mounting plate into grooves 20a and 20b formed inside the body 2b of the battery container and on both sides of the opening, and the connector is exposed from the opening 4 By so doing, the main body of the connector can be disposed in the connector housing portion 200.
　溝部２０ａ、２０ｂはそれぞれの溝の底が対面するように形成しており、溝部２０ａ、２０ｂは電池容器の蓋部２ａにも形成することができる。その場合、蓋を閉めるとコネクタ取り付けプレートが電池容器の蓋部２ａの溝部でも同様に保持を行う。溝部は、必ずしも開口部の周囲全体を取り囲むように設ける必要はなく、コネクタ取り付けプレートが脱落しない程度に、開口部の周囲の一部に設ければよい。
　コネクタ取り付けプレートを配置した際の安定性を考慮すると、電池容器２の対向する内面のうち少なくとも一対の内面にそれぞれ溝を形成し、溝の底が対向するように、配置することが好ましく、溝の長さは、溝を配置した内面の溝方向の長さの５０％以上とするのが好ましい。 The grooves 20a and 20b are formed such that the bottoms of the grooves face each other, and the grooves 20a and 20b can also be formed on the lid 2a of the battery container. In that case, when the lid is closed, the connector attachment plate holds the groove portion of the lid portion 2a of the battery container in the same manner. The groove does not necessarily have to be provided so as to surround the entire periphery of the opening, but may be provided in a part of the periphery of the opening so as not to drop the connector mounting plate.
In consideration of the stability when arranging the connector mounting plate, it is preferable to form a groove on at least a pair of inner surfaces of the opposed inner surfaces of the battery container 2 and arrange so that the bottoms of the grooves face each other. The length of the groove is preferably 50% or more of the length in the groove direction of the inner surface in which the groove is disposed.
　コネクタ取り付けプレート３０は、溝部２０ａの溝の間隔および溝部２０ｂの溝の内部において移動することなく、ちょうど収まる厚みとすることが好ましい。コネクタ取り付けプレートの縦方向の寸法は、取り付けプレートの縦方向の一方の端部を収容する溝の底面と、縦方向の他方の端部を収容する溝の底面との間隔よりも小さい。同様に、コネクタ取り付けプレートの横方向の寸法は、取り付けプレートの横方向の一方の端部を収容する溝の底面と、横方向の他方の端部を収容する溝の底面との間隔よりも小さい。これにより、コネクタ取り付けプレートが溝部に沿って縦と横の方向（図におけるＸ－Ｙ方向）に移動可能となる。したがって、電池パックを車両に取り付ける際に、生産上の取り付け位置のばらつきによってお互いのコネクタの位置が多少ずれたとしても、電池パック側のコネクタが接続可能な位置までスライドすることで確実にコネクタを接続することができる。 The connector mounting plate 30 preferably has a thickness that just fits without moving in the groove spacing of the groove 20a and inside the groove of the groove 20b. The longitudinal dimension of the connector mounting plate is smaller than the distance between the bottom of the groove receiving one longitudinal end of the mounting plate and the bottom of the groove receiving the other longitudinal end. Similarly, the lateral dimension of the connector mounting plate is smaller than the distance between the bottom of the groove receiving one lateral end of the mounting plate and the bottom of the groove receiving the other lateral end. . As a result, the connector mounting plate can be moved along the groove in the longitudinal and lateral directions (XY direction in the figure). Therefore, when attaching the battery pack to the vehicle, even if the positions of the connectors are slightly deviated due to variations in the mounting position in production, the connectors can be reliably slid to the positions where the connectors on the battery pack can be connected. It can be connected.
　なお、コネクタ自身にも、コネクタの一部に貫通孔が設けられており、当該貫通孔に挿通するネジ等の直径との寸法差の分だけコネクタを移動可能とするものが知られているが、電池パックの大型化に伴い、ネジ径の寸法差による可動範囲では不十分となる場合も多く、本発明の構成がきわめて有効となる。車両の走行中においては連続的な振動を受けることになるが、電池パック側のコネクタが振動に応じてＸ－Ｙ方向に十分に摺動可能とすることでコネクタの接続部へのストレスを低減することができる。 In the connector itself, a through hole is provided in a part of the connector, and it is known that the connector can be moved by the size difference from the diameter of the screw inserted into the through hole. As the size of the battery pack increases, the movable range due to the dimensional difference in screw diameter is often insufficient, and the configuration of the present invention is extremely effective. While the vehicle is traveling, it receives continuous vibration, but the connector on the battery pack side can slide sufficiently in the XY direction according to the vibration, thereby reducing stress on the connector connection. can do.
　一方、コネクタ取り付けプレートの厚みを溝部の溝の間隔とほぼ等しくしているので、コネクタの摺動方向は、ほぼＸ－Ｙ平面内に制限されることになり、挿通方向（図におけるＺ方向）への移動やねじれなどが生じることを防ぐようになっている。したがって、車両側のコネクタと接続する際にも、コネクタはＸ－Ｙ平面内のみで移動して、安定したコネクタ同士の接続を実現できる。
　また、電池容器の外面に、車両と接触する部位となり、コネクタの挿通方向への移動を抑制する部位を設けておけば、コネクタの挿通方向に大きな負荷がかかった場合でも、コネクタ取り付けプレートを溝に挿通した部分に加わる負荷を低減できる。したがって、コネクタ取り付けプレートを電池容器側にネジ止め等で固定せず、溝に嵌めこむ簡便な方式でも、振動によってコネクタ取り付けプレートが脱落することを防止できる。 On the other hand, since the thickness of the connector mounting plate is made approximately equal to the distance between the grooves in the groove, the sliding direction of the connector is substantially restricted within the XY plane, and the insertion direction (Z direction in the figure) It is designed to prevent movement or twisting to occur. Therefore, even when connecting with the connector on the vehicle side, the connector can move only in the XY plane to realize stable connection between the connectors.
Also, by providing a part on the outer surface of the battery container to be in contact with the vehicle and suppressing movement in the insertion direction of the connector, the connector attachment plate is grooved even when a large load is applied in the insertion direction of the connector. It is possible to reduce the load applied to the part inserted in the Therefore, even if the connector mounting plate is not fixed to the battery container side with screws or the like and the connector mounting plate is fitted into the groove, the connector mounting plate can be prevented from falling off due to vibration.
　ここで、コネクタ３ａに代わって別のコネクタを使用する場合であっても、コネクタ取り付けプレートの外形寸法はそのままにして、コネクタ挿通部の形状を変更するだけで対応することができる。したがって、電池容器側の形状を変更するよりもきわめて簡便に、異なるコネクタに対応することが可能となる。 Here, even when another connector is used instead of the connector 3a, the external dimensions of the connector mounting plate can be maintained as it is, and the configuration can be coped with by merely changing the shape of the connector insertion portion. Therefore, it becomes possible to cope with different connectors much more simply than changing the shape on the battery container side.
　図４は、図２とは異なるコネクタを用いた場合の電池パックを模式的に示す外観斜視図である。図４Ａはコネクタ３ｂを配置した面側から見た外観斜視図であり、図４Ｂは図４Ａにおけるコネクタを配置した部分を拡大した図である。図５Ａは、図４Ａの電池パックの電池容器の蓋部２ａを取り除き、コネクタ部分を分解した分解斜視図を示したものであり、図５Ｂは図５Ａにおいてコネクタを配置した部分を拡大した分解斜視図である。 FIG. 4 is an external perspective view schematically showing a battery pack when a connector different from that of FIG. 2 is used. FIG. 4A is an external perspective view seen from the side where the connector 3b is disposed, and FIG. 4B is an enlarged view of a portion where the connector is disposed in FIG. 4A. FIG. 5A shows an exploded perspective view of the battery container of FIG. 4A from which the cover 2a of the battery container is removed and the connector portion is disassembled. FIG. 5B is an enlarged perspective view of the portion where the connector is disposed in FIG. FIG.
　図２、図３との相違点は、コネクタ３ａおよびコネクタ取り付けプレート３０に代えて、フランジ３１を有するコネクタ３ｂを用いている点であり、それ以外の点は図２、図３と同じであるため、同じ部分についての詳細な説明は省略する。
　コネクタ３ｂは、コネクタの周囲であって、溝部２０ａおよび２０ｂの溝の隙間に沿って挿通可能なフランジ３１を備えている。図５Ａ、図５Ｂに示すフランジは、コネクタの一部を突出させるように成形したものだが、別の部材を取り付けたものであってもよいし、図２、図３と同様に、このコネクタを挿通可能なコネクタ取り付けプレートに取り付けてもよい。 The difference from FIGS. 2 and 3 is that a connector 3 b having a flange 31 is used instead of the connector 3 a and the connector mounting plate 30, and the other points are the same as in FIGS. 2 and 3. Therefore, the detailed description about the same part is omitted.
The connector 3 b is provided with a flange 31 which can be inserted around the connector and along the gap between the grooves 20 a and 20 b. Although the flanges shown in FIGS. 5A and 5B are formed so as to project a part of the connector, they may have other members attached thereto, and, like FIGS. 2 and 3, this connector may be used. You may attach to the connector attachment plate which can be penetrated.
　図４、図５に示すフランジ３１の外形（図の、Ｘ，Ｙ方向の寸法）は図２、図３におけるコネクタ取り付けプレート３０とほぼ同じになっている。したがって、コネクタ３ｂは溝部に沿ってＸ－Ｙ方向に沿って摺動可能であり、コネクタ取り付けプレート３０に取り付けたコネクタ３ｂと同様に、確実にコネクタを接続することができる。また、車両の走行中に継続的に振動を受けても、電池パックや車両側にコネクタを取り付けた箇所や、コネクタの接続部にかかるストレスを低減することができる。一方、フランジの厚みを溝部の溝の間隔とほぼ等しくしているので、車両側のコネクタと接続する際にも、挿通方向に移動することがほとんどなく、安定したコネクタの接続を実現できる。 The external shape (dimensions in the X and Y directions in the figure) of the flange 31 shown in FIGS. 4 and 5 is substantially the same as the connector mounting plate 30 in FIGS. 2 and 3. Therefore, the connector 3 b can slide along the groove along the XY direction, and the connector can be reliably connected in the same manner as the connector 3 b attached to the connector attachment plate 30. Moreover, even if vibration is continuously received while the vehicle is traveling, it is possible to reduce the stress applied to the battery pack, the portion where the connector is attached to the vehicle side, and the connection portion of the connector. On the other hand, since the thickness of the flange is substantially equal to the distance between the grooves of the groove portion, movement in the insertion direction is hardly caused even when connecting with the connector on the vehicle side, and stable connection of the connector can be realized.
　コネクタをＸ－Ｙ方向に移動可能に支持する他の方法としては、図６に示すように電池パックに対してコネクタをネジで取り付ける際、ネジを挿通する孔の径の直径を、ネジ等に対して大きくすることが考えられる。この場合でも、電池容器の外部であって開口部４の周囲の全部または一部には、突出部５を設けることが好ましい。
　ネジは、コネクタが移動可能な程度の荷重を座面に加えるか、または、コネクタと座面との間に間隔を設けて取り付ければよい。この形態では、溝を用いてＸ－Ｙ方向に移動可能に支持する場合と比べて、ネジの本数や取り付けスペースが増大し、取り付けの簡便さは低減するが、コネクタへの極度の荷重の集中は回避することができる。 As another method of movably supporting the connector in the XY direction, as shown in FIG. 6, when attaching the connector to the battery pack with a screw, the diameter of the hole through which the screw is inserted is It is conceivable to make it larger. Even in this case, it is preferable to provide the protruding portion 5 outside the battery container and at all or part of the periphery of the opening 4.
The screw may be attached to the seat surface by applying a load to the extent that the connector can move, or by providing a space between the connector and the seat surface. In this embodiment, the number of screws and the mounting space are increased and the mounting ease is reduced, as compared with the case where the groove is used to movably support in the XY direction, but concentration of extreme load on the connector is reduced. Can be avoided.
　図６では、コネクタ収容部２００の一部には、コネクタ取り付けプレート３０ｂを取り付けるためにネジ孔２０１が設けられており、ネジ孔は突起２０２の頂上に設けられている。コネクタ取り付けプレート３０ｂには、コネクタ挿通部の両側に切り欠き３０ｃが設けられており、切り欠き部３０ｃ内に挿通されるネジ孔の突起２０２の外形よりも、切欠き部の大きさを大にしている。これにより、コネクタ取り付けプレートは突起の外形と切欠きの大きさの寸法さの分だけ、電池容器に対して変位可能となる。なお、コネクタ自身にも、コネクタの一部に貫通孔を設け、当該貫通孔に挿通するネジ等の直径との寸法差の分だけコネクタを移動可能とすることができるが、本構成によりコネクタ取り付けプレート自身も移動可能とすれば、電池パックが大型化しても、移動可能な範囲が拡大し、安定したコネクタの接続が可能となる。 In FIG. 6, a screw hole 201 is provided in a part of the connector accommodating portion 200 for attaching the connector mounting plate 30 b, and the screw hole is provided on the top of the projection 202. The connector mounting plate 30b is provided with notches 30c on both sides of the connector insertion portion, and the size of the notch is made larger than the external shape of the projection 202 of the screw hole inserted into the cutout 30c. ing. Thus, the connector mounting plate can be displaced relative to the battery case by the size of the outer shape of the protrusion and the size of the notch. Although the connector itself can be provided with a through hole in a part of the connector and the connector can be moved by the size difference with the diameter of a screw or the like inserted through the through hole, the connector attachment by this configuration If the plate itself is also movable, even if the battery pack is enlarged, the movable range is expanded and stable connector connection is possible.
　本発明の電池パックは、振動、衝撃に対する耐性が大きな組電池および電池パックを提供することができる。 The battery pack of the present invention can provide an assembled battery and a battery pack that are highly resistant to vibration and shock.
１・・・電池パック、２・・・電池容器、２ａ・・・電池容器の蓋部、２ｂ・・・身部、２０ａ、２０ｂ・・・溝部 、２００・・・コネクタ収容部、３ａ、３ｂ・・・コネクタ、３０・・・コネクタ取り付けプレート、３０ａ・・・コネクタ挿通部、３０ｂ・・・コネクタ取り付けプレート、３０ｃ・・・切り欠き部、３１・・・フランジ、４・・・開口部、５・・・突出部、６・・・二次電池、７・・・基板ホルダ、１００・・・車両、１１０・・・サドル、１２０・・・シートチューブ、１３０・・・ロック部材、１５０・・・ペダル、１６０・・・前輪、１７０・・・後輪、２００・・・コネクタ収容部、２０１・・・ネジ孔、２０２・・・突起 DESCRIPTION OF SYMBOLS 1 ... battery pack, 2 ... battery container, 2a ... lid part of battery container, 2b ... body part, 20a, 20b ... groove part, 200 ... connector accommodating part, 3a, 3b ... Connector, 30 ... Connector mounting plate, 30a ... Connector insertion part, 30b ... Connector mounting plate, 30c ... Notched part, 31 ... Flange, 4 ... Opening part, DESCRIPTION OF SYMBOLS 5 ... Projection part, 6 ... Secondary battery, 7 ... Substrate holder, 100 ... Vehicle, 110 ... Saddle, 120 ... Seat tube, 130 ... Lock member, 150 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·

Claims (6)

  1. 　少なくとも電池要素とコネクタとを収容する電池容器を備える電池パックであって、
    前記電池容器は、前記コネクタが露出する開口部を備え、
    前記電池容器の一部に、コネクタの挿通方向に対して電池パックが移動することを抑制する突出部を備えることを特徴とする電池パック。     A battery pack comprising a battery container containing at least a battery element and a connector, the battery pack comprising:
    The battery case includes an opening through which the connector is exposed.
    A battery pack characterized in that a part of the battery case is provided with a protrusion that suppresses movement of the battery pack in the insertion direction of the connector.
  2. 　前記電池容器は、前記コネクタまたは前記コネクタを取り付けたコネクタ取り付けプレートを保持するための溝を有し、
    前記コネクタまたは前記コネクタ取り付けプレートが前記溝に沿って移動可能である
    ことを特徴とする請求項１記載の電池パック。     The battery container has a groove for holding the connector or a connector mounting plate to which the connector is attached,
    The battery pack according to claim 1, wherein the connector or the connector mounting plate is movable along the groove.
  3. 　前記突出部が、前記開口部が形成された面の、前記開口部の周囲に配置したことを特徴とする請求項１または請求項２に記載の電池パック。 The battery pack according to claim 1, wherein the protrusion is disposed around the opening in a surface on which the opening is formed.
  4. 少なくとも電池要素とコネクタとを収容する電池容器を備える電池パックであって、
    前記電池容器は、前記コネクタが露出する開口部を備え、
    前記電池容器の一部に、コネクタの挿通方向に対して電池パックが移動することを
    抑制する突出部を備えることを特徴とする電池パックと、
    前記電池パックのコネクタと接続する車両側のコネクタとを有する車両であって、
    前記電池パック側のコネクタと前記車両側のコネクタとが、コネクタ同士の挿入方向への移動を制限された状態で電気的に接続されていることを特徴とする車両。     A battery pack comprising a battery container containing at least a battery element and a connector, the battery pack comprising:
    The battery case includes an opening through which the connector is exposed.
    A battery pack characterized in that a part of the battery case is provided with a protrusion that suppresses movement of the battery pack in the insertion direction of the connector.
    A vehicle comprising: a connector on the vehicle side connected to the connector of the battery pack;
    A vehicle characterized in that the connector on the battery pack side and the connector on the vehicle side are electrically connected in a state in which the movement of the connectors in the insertion direction is restricted.
  5. 　前記電池容器は、前記コネクタまたは前記コネクタを取り付けたコネクタ取り付けプレートを保持するための溝を有し、
    前記コネクタまたは前記コネクタ取り付けプレートが前記溝に沿って移動可能であることを特徴とする請求項４記載の車両。     The battery container has a groove for holding the connector or a connector mounting plate to which the connector is attached,
    5. The vehicle according to claim 4, wherein the connector or the connector mounting plate is movable along the groove.
  6. 　前記突出部が、前記開口部が形成された面の、前記開口部の周囲に配置したことを特徴とする請求項４または請求項５に記載の車両。 The vehicle according to claim 4 or 5, wherein the protrusion is disposed around the opening in a surface in which the opening is formed.
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