WO2016171345A1 - 배터리 셀 냉각장치 및 이를 포함하는 배터리 모듈 - Google Patents
배터리 셀 냉각장치 및 이를 포함하는 배터리 모듈 Download PDFInfo
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- WO2016171345A1 WO2016171345A1 PCT/KR2015/010030 KR2015010030W WO2016171345A1 WO 2016171345 A1 WO2016171345 A1 WO 2016171345A1 KR 2015010030 W KR2015010030 W KR 2015010030W WO 2016171345 A1 WO2016171345 A1 WO 2016171345A1
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- Prior art keywords
- bent
- bent surface
- battery cell
- battery
- cooling plate
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- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
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- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/647—Prismatic or flat cells, e.g. pouch cells
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- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6552—Closed pipes transferring heat by thermal conductivity or phase transition, e.g. heat pipes
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- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
- H01M10/6555—Rods or plates arranged between the cells
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- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
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- 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
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- 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
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- 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
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- 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
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- 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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Definitions
- the present invention relates to a battery cell cooling apparatus and a battery module including the same, and more particularly, to a battery cell cooling apparatus and a battery module including the same that can improve the cooling efficiency of the battery cells.
- the secondary battery having high application characteristics and high electrical energy characteristics such as high energy density according to the product range is not only a portable device but also an electric vehicle (EV) or a hybrid electric vehicle (HEV), electric power driven by an electric driving source. It is commonly applied to a storage device.
- the secondary battery is attracting attention as a new energy source for improving eco-friendliness and energy efficiency in that not only the primary advantage of drastically reducing the use of fossil fuels is generated but also no by-products of energy use are generated.
- the battery pack applied to the electric vehicle or the like has a structure in which a plurality of cell assemblies including a plurality of unit cells are connected in series to obtain a high output.
- the unit cell may be repeatedly charged and discharged by an electrochemical reaction between components, including a positive electrode and a negative electrode current collector, a separator, an active material, an electrolyte, and the like.
- the battery pack of the multi-module structure is manufactured in a form in which a plurality of secondary batteries are concentrated in a narrow space, it is important to easily discharge heat generated from each secondary battery. Since the process of charging or discharging the secondary battery battery is performed by the electrochemical reaction as described above, if the heat of the battery module generated in the charging and discharging process is not effectively removed, thermal accumulation occurs and consequently, deterioration of the battery module is promoted. In some cases, fire or explosion may occur.
- a high output large capacity battery module and a battery pack to which it is mounted require a cooling device to cool the battery cells embedded therein.
- FIG. 1 is a schematic perspective view of a conventional battery module.
- a commercially available secondary battery includes a stack in which a plurality of secondary battery cells 3 are stacked as many as necessary.
- a cooling fin Insert 2
- the cooling fins 2 that absorb heat in each unit cell 3 transfer the heat to the heat sink 1 and the heat sink 1 is cooled by cooling water or cooling air.
- a member for reducing contact thermal resistance such as a thermal interface material (TIM) 4 may be further added between the cooling fins 2 and the heat sink 1.
- TIM thermal interface material
- the conventional cooling fin 2 has a low thermal conductivity due to contact resistance with the heat sink 1 and the like, so that heat generated from the secondary battery cell may not be smoothly discharged to the outside.
- the present invention has been made to solve the above problems, to provide a battery cell cooling apparatus that can increase the battery cell cooling performance.
- Another object of the present invention is to provide a battery module having excellent life characteristics and safety by high cooling performance by including such a cooling device.
- a battery cell cooling apparatus includes: a heat sink having a hollow structure positioned adjacent to at least one side of a battery cell stack including a plurality of battery cells, and having a flow path through which a refrigerant flows; And a cooling plate interposed between the battery cells such that one or both surfaces thereof contact the battery cell, and a heat dissipation part extending from the heat absorbing part and exposed to the flow path to exchange heat with the battery cells.
- the heat dissipation unit may include at least one bent surface disposed in parallel with the flow path, and at least one through hole through which the coolant passes.
- the at least one bent surface is plural, and the bent surfaces may be disposed to be spaced apart by a predetermined interval with the through-holes therebetween.
- the plurality of bent surfaces may include a first bent surface having a bent end portion of the cooling plate and a second bent surface formed in parallel with the first bent surface under the first bent surface. It may include.
- the second bent surface may be formed by partially cutting the cooling plate so that the cut portion is bent to be parallel to the first bent surface, and the through hole may be defined as a space in which the cut portion is bent.
- the second bent surface may include a plurality of unit second bent surfaces, and the unit second bent surface may be formed at predetermined intervals along a width direction of the cooling plate.
- the at least one bent surface is one, the bent surface, the end portion of the cooling plate may be provided in a form bent "T".
- the bent surface may include a first bent surface in which an end portion of the cooling plate is bent in one direction, and the cooling plate is partially cut, and the cut portion is bent in a direction opposite to the first bent surface. It may include a second bent surface provided in parallel with the first bent surface.
- the first bent surface and the second bent surface may be provided on the same plane, and the through hole may be defined as a space in which the cut portion is bent.
- the second bent surface may include a plurality of unit second bent surfaces, and the unit second bent surface may be formed at predetermined intervals along a width direction of the cooling plate.
- the cooling plate may be a thermally conductive metal plate.
- the refrigerant may be a gas or a liquid.
- a battery module including the battery cell cooling device described above may be provided.
- a battery pack including the battery module may be provided.
- an automobile including the battery pack may be provided.
- the vehicle may include an electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle, and the like.
- the heat dissipation portion of the cooling plate is disposed inside the heat sink flow path can eliminate the thermal contact resistance between the cooling plate and the heat sink according to the prior art.
- the convective heat transfer area is widened, thereby improving cooling efficiency of the battery cell.
- the refrigerant may pass through the through hole of the heat dissipation portion, so that the flow of the refrigerant is smooth, and the load of the refrigerant supply fan may be reduced.
- FIG. 1 is a schematic side view of a battery module according to the prior art.
- FIG. 2 is a schematic perspective view of a battery module according to a first embodiment of the present invention.
- FIG. 3 is a perspective view illustrating only a part of the battery cell and the cooling plate in FIG. 2.
- FIG. 4 is a cross-sectional view of FIG. 3.
- FIG 5 is a reference diagram of a cooling plate according to the first embodiment of the present invention.
- FIG. 6 is a schematic perspective view of a battery module according to a second embodiment of the present invention.
- FIG. 7 is a perspective view illustrating only a part of the battery cell and the cooling plate in FIG. 6.
- FIG. 8 is a perspective view illustrating only a part of a battery module according to a third exemplary embodiment of the present invention.
- FIG. 9 is a cross-sectional view of FIG. 8.
- FIG. 10 is a reference diagram of a cooling plate according to a third embodiment of the present invention.
- FIG. 11 is a perspective view illustrating only a part of a battery module according to a fourth exemplary embodiment of the present invention.
- FIG. 2 is a schematic perspective view of a battery module according to a first embodiment of the present invention
- FIG. 3 is a partially enlarged perspective view of FIG. 2
- FIG. 4 is a sectional view of FIG. 3
- FIG. 5 is of the present invention. It is a reference figure for demonstrating the cooling plate which concerns on 1st Example.
- the battery module 10 includes a battery cell stack 20 and a battery cell cooling device 30.
- the battery cell stack 20 is a stack of battery cells 21.
- the battery cells 21 are preferably plate-shaped battery cells 21 so as to provide a high stacking rate in a limited space, and are stacked and arranged so that one or both surfaces thereof face the adjacent battery cells 21. ) May be formed.
- the battery cell stack 20 may further include a stacking frame for stacking the battery cells 21.
- the stacking frame is used to stack the battery cells 21.
- the stacking frame is configured to hold the battery cells 21 to prevent the flow thereof and to be stacked on each other to guide the assembly of the battery cells 21.
- Such a stacking frame may be replaced by various terms such as a cartridge, and may be configured in the form of a rectangular ring with an empty central portion. In this case, the outer circumference of the battery cell 21 may be located at four sides of the stacking frame.
- the battery cell 21 includes an electrode assembly composed of a positive electrode plate, a separator, and a negative electrode plate, and the positive lead and the negative lead are electrically connected to a plurality of positive electrode tabs and negative electrode tabs protruding from the positive electrode plate and the negative electrode plate of each battery cell 21, respectively. It may have been.
- the battery cell 21 may be a pouch type battery cell 21.
- the pouch-type battery cell 21 may have a structure in which an outer circumferential surface of the outer case is heat-sealed and sealed in a state in which an electrode assembly is embedded in an outer case of a laminate sheet including a resin layer and a metal layer.
- the battery cell cooling device 30 properly removes heat generated from the battery cell 21 during charging and discharging. 2 and 3, the battery cell 21 cooling device 30 includes a heat sink 100 and a cooling plate 110.
- the heat sink 100 refers to an object that absorbs and dissipates heat from another object by thermal contact.
- the heat sink 100 may be located at at least one of the upper and lower portions of the battery cell stack 20.
- the heat sink 100 may be located above the battery cell stack 20, as shown in FIG. 2.
- the heat sink 100 may be located at at least one of the left side and the right side of the battery cell stack 20 as necessary.
- the heat sink 100 has a hollow structure including a flow path 101 therein.
- the coolant flowing in the flow path 101 inside the heat sink 100 is not particularly limited as long as it flows easily in the flow path 101 and has excellent cooling property, and may be a gas or a liquid.
- the latent heat may be water that can maximize cooling efficiency.
- the present invention is not limited thereto, and flow may occur, and may be an antifreeze solution, a gas refrigerant, air, or the like.
- Cooling plate 110 according to the present invention, as shown in Figure 2, both surfaces are sandwiched between the battery cells 21 in a state of being in close contact with each of the battery cells 21, the end portion of the heat sink 100 It is exposed to the flow path 101.
- the cooling plate 110 may be a thermally conductive metal plate having a thickness of 0.1 to 5.0 mm.
- the cooling plate 110 includes certain self mechanical stiffness characteristics, thereby reinforcing the mechanical stiffness of the battery cell 21 exterior material itself which is not excellent. In addition, since the additional plate is not required to reinforce the mechanical rigidity due to the cooling plate 110, the compact battery module 10 may be manufactured.
- the thickness or structure thereof is not particularly limited.
- a sheet-like sheet of metal material may be preferably used.
- the metal material may be aluminum or an aluminum alloy having high thermal conductivity and light weight among metals, but is not limited thereto.
- copper, gold and silver are also possible.
- ceramic materials such as aluminum nitride and silicon carbide are also possible.
- the cooling device 30 has a structure that can increase the heat transfer rate compared to the conventional cooling device (see Fig. 1), it will be described in detail below.
- the cooling plate 110 may be composed of a heat absorbing part 120 and a heat radiating part 130.
- the heat absorbing part 120 is interposed between the battery cells 21 so as to contact the battery cell 21 and absorbs heat from the battery cell 21 during charge and discharge, and the heat radiating part 130 is the heat absorbing part 120.
- the cooling plate 110 of the present embodiment 110 is provided with a heat dissipation unit 130 in one direction, but unlike the present embodiment, the cooling plate may be configured to have a heat dissipation unit 130 in both directions.
- the heat dissipation unit 130 may extend in both the upper and lower portions of the battery cell stack 20 in the heat absorbing portion 120, and the heat sink 100 may also be disposed on the upper and lower portions of the battery cell stack 20. Each one can be configured.
- heat of the battery cell 21 may be absorbed by the heat absorbing part 120 and the absorbed heat may be conducted to the heat radiating part 130.
- the heat dissipation unit 130 dissipates heat to the heat sink 100.
- the cooling rate of the battery cell 21 may be greatly influenced by the effective heat dissipation area, the convection effect, etc. between the heat dissipation unit 130 and the heat sink 100, and the present invention may be performed between the heat dissipation unit 130 and the heat sink 100.
- the design is focused on the structure to maximize the heat transfer rate.
- the conventional cooling fin is provided so as to secure a thermal contact area with the heat sink 100 by bending an end portion thereof. However, heat transfer may be inhibited due to contact thermal resistance, that is, surface roughness, between the end of the cooling fin and the outer wall of the heat sink 100.
- the conventional battery module 10 further includes a thermal interface material (TIM) to reduce such contact thermal resistance, but does not completely remove the contact thermal resistance.
- TIM thermal interface material
- the present invention does not cause a problem of contact thermal resistance between the cooling plate 110 and the heat sink 100. In other words, it is free from the problem of contact heat resistance due to contact between different objects.
- the present invention applies a heat transfer method using heat convection between a solid and a fluid, rather than a contact between two objects having different temperatures, that is, heat transfer by heat conduction.
- convective heat transfer refers to the transfer of heat between the fluid and the surface of the solid as a result of the relative motion of the fluid relative to the surface if the temperature of the fluid and the solid surface are different when the fluid flows on or in the flow path 101.
- h is the convective heat transfer coefficient
- A is the heat dissipation area
- T1 is the solid surface temperature
- T2 is the temperature of the fluid. Therefore, to increase convective heat transfer, when T1 and T2 are fixed, the first is to increase the convective heat transfer coefficient h and the second is to increase the effective heat dissipation area A.
- Convective heat transfer coefficient h is an experimentally determined value based on surface geometry, fluid type, fluid properties, fluid velocity, etc., and is generally proportional to the fluid flow rate.
- the heat dissipation area A increases the heat transfer rate as the heat dissipation area A becomes the effective heat dissipation area of the object.
- the cooling device 30 according to the present invention is configured to have an advantageous structure in the effective heat dissipation area and the flow rate of the refrigerant.
- the heat dissipation unit 130 is a surface intersecting the plurality of bent surfaces 131 and 132 and the bent surfaces 131 and 132.
- Vertical surface 134 The bent surfaces 131 and 132 may be bent at an angle of 90 degrees with respect to the heat dissipation unit 130 or the vertical surface 134 vertically disposed between the battery cells 21.
- the bent surfaces 131 and 132 may be disposed in parallel with the flow path 101 inside the heat sink 100. This is to ensure sufficient convection heat transfer area by allowing the refrigerant to flow along the surfaces of the bent surfaces 131 and 132.
- the bent surfaces 131 and 132 include two first bent surfaces 131 and two second bent surfaces 132.
- the first bent surface 131 is provided in a form in which the end portion of the cooling plate 110 is bent at an angle of 90 degrees
- the second bent surface 132 is a first bent surface 131 below the first bent surface 131. Side by side) is bent in the same direction.
- a through hole 133 is formed between the first bent surface 131 and the second bent surface 132.
- the number of bending surfaces is configured as two, but the number of bending surfaces may be three or more depending on the thickness of the cooling plate 110 and the size of the internal space of the heat sink 100.
- a coolant such as cooling air
- This cooling air flow may be achieved by a cooling fan.
- the cooling air may absorb heat from the heat dissipation unit 130 while flowing along the upper and lower surfaces of the first bent surface 131 and the upper surface of the second bent surface 132.
- the heat dissipation unit 130 includes only the vertical surface 134 without the bent surfaces 131 and 132
- the rear side of the heat dissipation unit 130 is cooler than the front side of the vertical surface 134 facing the flow of cooling air. Since the flow is stagnant, heat dissipation is difficult.
- the flow of the cooling air is blocked on the vertical surface 134, the flow rate may be slow. In order to prevent the flow rate of the cooling air from being lowered in the internal flow path 101 of the heat sink 100, the load of the cooling fan may be increased.
- the flow of cooling air may flow along the upper surface of the single bent surface.
- the effective heat dissipation area may be increased compared to the heat dissipation unit 130 composed of only 134, the convex heat transfer efficiency may not be high because air is stagnated on the lower surface side of the single bent surface because it is still blocked by the vertical plane 134.
- the heat dissipation unit 130 includes a first bent surface 131 and a second bent surface 132 and a through hole 133 therebetween, As described above, since the flow flows through the through hole 133 without blocking the vertical surface 134, the cooling air may flow along the upper and lower surfaces of the first bent surface 131 and the upper surface of the second bent surface 132. have. Therefore, the effective heat dissipation area is wider than the above-described examples, and thus the cooling efficiency can be increased.
- the cooling plate 110 may be provided as a sheet-shaped plate of metal material.
- a portion of the flat cooling plate 110 is partially cut off, as shown in FIG. 5.
- the end of the flat cooling plate 110 with respect to the line I-I bend at an angle of 90 degrees.
- the bent surface thus forms the first bent surface 131.
- the portion cut in the same direction as the first bent surface 131 based on the II-II line is bent at an angle of 90 degrees.
- the bent surface thus forms a second bent surface 132.
- the cut portion is bent space is provided through the hole 133. Therefore, the size of the through hole 133 is the same as the cross-sectional area of the second bent surface 132.
- the manufacturing process can be simplified since the process of additionally welding the member or drilling the cooling plate 110 to omit the second bent surface 132 and the through hole 133 can be omitted.
- the scope of the present invention should not be limited to this manufacturing method.
- Such a battery module 10 according to the present invention there is almost no thermal contact resistance problem between the cooling member has a conventional battery module, the heat dissipation unit 130 of the cooling plate 110 has a structure that can maximize the convection heat transfer rate Since the cooling efficiency of the battery cell 21 can be improved than before.
- FIGS. 2 to 5 Other embodiments of the present invention to be described below may be referred to as a configuration corresponding to FIGS. 2 to 5 when compared with the above-described embodiment.
- the same member number represents the same member, and duplicate description of the same member will be omitted.
- FIG. 6 is a schematic perspective view of a battery module according to a second exemplary embodiment of the present invention
- FIG. 7 is a perspective view illustrating only a part of a battery cell and a cooling plate in FIG. 6.
- This embodiment has a difference in the configuration of the second bent surface in comparison with the above-described embodiment, and in the other configuration is the same as the configuration of the embodiment of Figures 2 to 5, the following will be different from the above-described embodiment The explanation mainly focuses on this.
- the second bent surface 232 according to the second embodiment of the present invention includes a plurality of unit second bent surfaces 232a.
- the plurality of unit second bent surfaces 232a may be formed at predetermined intervals along the width direction of the cooling plate 210.
- the second bent surface 132 is integrally formed, but in the present embodiment, the second bent surface 232 may be divided into several pieces.
- the mechanical stiffness of the heat dissipation unit 230 may be higher than that of the first embodiment. That is, since the first bent surface 231 is supported by the plurality of vertical surfaces 234, the bent shape may be more stably maintained.
- the turbulent flow increases around the through hole 233, so that heat exchange through the cooling air may be more actively performed.
- FIG. 8 is a perspective view showing only a part of a battery module according to a third embodiment of the present invention
- FIG. 9 is a cross-sectional view of FIG. 8
- FIG. 10 is a cooling plate according to a third embodiment of the present invention. It is also a reference.
- the bent surfaces 331 and 332 of the cooling plate 310 according to the third exemplary embodiment of the present invention have a shape in which an end portion of the cooling plate 310 is bent in a substantially "T" shape.
- the heat dissipation part 330 of the cooling plate 310 may be formed in a similar manner to the above-described embodiments, but the second bent surface 332 is in the opposite direction to the first bent surface 331. It is bent and the 1st bending surface 331 and the 2nd bending surface 332 are provided on the same plane. More specifically, as shown in FIG. 10, the end of the flat cooling plate 310 is bent backward at an angle of 90 degrees based on the III-III line to form the first bent surface 331, and IV-.
- the second cut surface 332 is formed by bending the cut portion with respect to the line IV forward at an angle of 90 degrees.
- the cut portion is formed to be a space formed through the through hole 333, the size of the through hole 333 is the same as the cross-sectional area of the second bent surface (332).
- the first bent surface 331 and the second bent surface 332 of the present embodiment are located on the same plane, as shown in FIGS. 8 and 9.
- the heat dissipation portion 330 of the cooling plate 310 is not to be limited in the above manner. That is, the end portion of the cooling plate 310 in the form of a "T" shape may be provided integrally with the bent surface, and through the vertical surface 334 immediately below the bent surface (331,332) may be provided with a through hole 333.
- cooling air may flow along the upper and lower surfaces of the first bent surface 331 and the second bent surface 332, thus providing an effective heat dissipation area. Can be widened.
- cooling air may not flow smoothly to the bottom surface of the second bent surface.
- the through hole 333 is formed at the lower portion of the second bent surface 332, the flow of cooling air may be smoothly even on the bottom surface of the second bent surface 132.
- the heat dissipation part 330 Compared with the heat dissipation parts 130 and 230 of the above-described embodiment, the heat dissipation part 330 according to the present embodiment has the same overall cross-sectional area but has a larger effective heat dissipation area. Therefore, the cooling efficiency of the battery module may be higher.
- FIG. 11 is a perspective view illustrating only a part of a battery module according to a fourth exemplary embodiment of the present invention.
- the structure is basically similar to the above-described third embodiment, but the second bent surface 332 is configured to be divided into several branches. That is, as shown in FIG. 11, the second bent surface 432 according to the fourth embodiment of the present invention may include a plurality of unit second bent surfaces 432a.
- the mechanical stiffness of the heat dissipating portion 430 is different from that of the first and third embodiments. Can be higher than that. Therefore, since the first and second bent surfaces 431 and 432 are supported by the plurality of vertical surfaces 434, the bent shape may be more stably maintained.
- the turbulent flow may increase around the plurality of through holes 433, and thus heat exchange through the cooling air may be more actively performed.
- the battery pack according to the present invention may include one or more battery modules 10 according to the present invention described above.
- the battery pack may further include a case for covering the battery module, various devices for controlling charging and discharging of the battery module, such as a BMS, a current sensor, a fuse, and the like.
- the battery pack according to the present invention can be applied to an automobile such as an electric vehicle or a hybrid vehicle. That is, the vehicle according to the present invention may include a battery module according to the present invention.
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Abstract
Description
Claims (14)
- 다수의 배터리 셀들로 구성된 배터리 셀 적층체의 적어도 일측에 인접하게 위치하고, 내부에 냉매가 흐르는 유로가 형성된 중공 구조의 히트싱크; 및일면 또는 양면이 상기 배터리 셀에 접하도록 상기 배터리 셀들 사이에 개재되는 흡열부와, 상기 흡열부에서 연장되어 상기 유로에 노출되는 방열부를 구비하여 상기 배터리 셀들과 열교환을 행하는 냉각 플레이트를 포함하며,상기 방열부는,상기 유로와 나란하게 배치되는 적어도 하나의 절곡면과, 냉매를 통과시키는 적어도 하나의 통공을 포함하는 것을 특징으로 하는 배터리 셀 냉각장치.
- 제1항에 있어서,상기 적어도 하나의 절곡면은 복수 개이며,상기 절곡면들은 상기 통공을 사이에 두고 소정 간격 이격되게 배치되는 것을 특징으로 하는 배터리 셀 냉각장치.
- 제2항에 있어서,상기 복수의 절곡면은,상기 냉각 플레이트의 끝 부분이 구부러진 형태로 마련되는 제1 절곡면과, 상기 제1 절곡면 하부에서 상기 제1 절곡면과 나란하게 절곡된 형태로 마련되는 제2 절곡면을 포함하는 것을 특징으로 하는 배터리 셀 냉각장치.
- 제3항에 있어서,제2 절곡면은, 상기 냉각 플레이트가 부분 절취되어, 상기 절취된 부분이 상기 제1 절곡면과 나란하도록 구부려져 형성되고,상기 통공은, 상기 절취된 부분이 구부려진 공간으로 정의되는 것을 특징으로 하는 배터리 셀 냉각 장치.
- 제4항에 있어서,상기 제2 절곡면은, 복수 개의 단위 제2 절곡면을 포함하며,상기 단위 제2 절곡면은, 상기 냉각 플레이트의 폭 방향을 따라 소정 간격 마다 형성되는 것을 특징으로 하는 배터리 셀 냉각 장치.
- 제1항에 있어서,상기 적어도 하나의 절곡면은, 하나이며,상기 절곡면은, 상기 냉각 플레이트의 끝 부분이 "T"자로 절곡된 형태로 마련되는 것을 특징으로 하는 배터리 셀 냉각 장치.
- 제1항에 있어서,상기 절곡면은, 상기 냉각 플레이트의 끝 부분이 일 방향으로 구부러진 형태로 마련되는 제1 절곡면과, 상기 냉각 플레이트가 부분 절취되어, 상기 절취된 부분이 상기 제1 절곡면과 반대 방향으로 구부러져 상기 제1 절곡면과 나란하게 마련되는 제2 절곡면을 포함하는 것을 특징으로 하는 배터리 셀 냉각 장치.
- 제7항에 있어서,상기 제1 절곡면과 상기 제2 절곡면은 동일 평면상에 마련되며, 상기 통공은, 상기 절취된 부분이 구부려진 공간으로 정의되는 것을 특징으로 하는 배터리 셀 냉각 장치.
- 제8항에 있어서,상기 제2 절곡면은, 복수 개의 단위 제2 절곡면을 포함하며,상기 단위 제2 절곡면은, 상기 냉각 플레이트의 폭 방향을 따라 소정 간격 마다 형성되는 것을 특징으로 하는 배터리 셀 냉각 장치.
- 제1항에 있어서,상기 냉각 플레이트는 열도전성 금속 판재인 것을 특징으로 하는 배터리 셀 냉각 장치.
- 제1항에 있어서,상기 냉매는, 기체 또는 액체인 것을 특징으로 하는 배터리 셀 냉각 장치.
- 제1항 내지 제11항 중 어느 하나에 따른 배터리 셀 냉각 장치를 포함하는 것을 특징으로 하는 배터리 모듈.
- 제12항에 따른 배터리 모듈을 포함하는 것을 특징으로 하는 배터리 팩.
- 제13항에 따른 배터리 팩을 포함하는 것을 특징으로 하는 자동차.
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JP2017534549A JP6753854B2 (ja) | 2015-04-22 | 2015-09-23 | バッテリーセル冷却装置及びこれを含むバッテリーモジュール |
EP15890011.8A EP3163673B1 (en) | 2015-04-22 | 2015-09-23 | Battery cell cooling device and battery module including same |
US15/315,637 US10381694B2 (en) | 2015-04-22 | 2015-09-23 | Cooling device for battery cell and battery module comprising the same |
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KR1020150056841A KR101780037B1 (ko) | 2015-04-22 | 2015-04-22 | 배터리 셀 냉각장치 및 이를 포함하는 배터리 모듈 |
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EP (1) | EP3163673B1 (ko) |
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CN109923730B (zh) * | 2017-07-11 | 2022-04-12 | 株式会社Lg化学 | 电池模块和包括该电池模块的电池组 |
US20190051956A1 (en) * | 2017-08-11 | 2019-02-14 | Hyundai Motor Company | Battery module |
US10790558B2 (en) * | 2017-08-11 | 2020-09-29 | Hyundai Motor Company | Battery module |
CN107742684A (zh) * | 2017-09-30 | 2018-02-27 | 山东大学 | 一种鳍片散热式双层汽车动力电池箱 |
CN107742684B (zh) * | 2017-09-30 | 2023-10-17 | 山东大学 | 一种鳍片散热式双层汽车动力电池箱 |
US20200058974A1 (en) * | 2018-08-17 | 2020-02-20 | Hyundai Motor Company | Battery module |
Also Published As
Publication number | Publication date |
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CN205646062U (zh) | 2016-10-12 |
CN106067574B (zh) | 2018-09-25 |
US20170200991A1 (en) | 2017-07-13 |
US10381694B2 (en) | 2019-08-13 |
JP6753854B2 (ja) | 2020-09-09 |
CN106067574A (zh) | 2016-11-02 |
KR20160125829A (ko) | 2016-11-01 |
EP3163673A1 (en) | 2017-05-03 |
KR101780037B1 (ko) | 2017-09-19 |
EP3163673B1 (en) | 2018-07-18 |
EP3163673A4 (en) | 2017-11-29 |
JP2018508931A (ja) | 2018-03-29 |
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