Heat insulation assembly, battery module and battery pack

Abstract

The utility model relates to the technical field of batteries, and particularly provides a heat insulation assembly, a battery module and a battery pack, the heat insulation assembly comprises a frame body, a partition plate and first heat insulation structures, the partition plate is located in an accommodating space formed by the frame body and is connected with the frame body, and the first heat insulation structures are arranged on a first side surface and a second side surface of the frame body. The partition plates in the heat insulation assembly can block impact of high-temperature and high-pressure substances generated by the battery cells, the impact of the thermal runaway battery cells on adjacent battery cells and devices is reduced, the first heat insulation structure can slow down heat transfer of the battery cells to surrounding devices, the heat insulation assembly can block heat transfer of the battery cells, and the heat transfer efficiency of the battery cells is improved. And the safety of the battery is improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a thermal insulation component, a battery module and a battery pack. Background Art

[0002] Batteries have the advantages of high specific energy and high power density. They are widely used in electronic devices and transportation vehicles, such as mobile phones, laptops, electric vehicles, electric airplanes, electric ships, electric tools, etc.

[0003] When a battery cell is short-circuited or squeezed, it will experience thermal runaway. The heat generated will spread to the surrounding cells, seriously affecting the normal operation of the battery and even causing fire. How to effectively insulate the cells has always been an important research direction for those skilled in the art. Utility Model Content

[0004] In view of the above problems, the present application provides a thermal insulation component, a battery module and a battery pack. The thermal insulation component can block the heat generated by the battery cell, which is beneficial to improving the safety of the battery.

[0005] In a first aspect, some embodiments of the present application provide a thermal insulation component arranged on the outside of a battery cell, the thermal insulation component comprising a frame, a partition plate and a first thermal insulation structure, the frame forms a accommodating space, the partition plate is located in the accommodating space and connected to the frame, the partition plate comprises a first side surface and a second side surface arranged opposite to each other, and the first side surface and the second side surface are both provided with a first thermal insulation structure.

[0006] The partition plate in the above-mentioned structural insulation component can block the impact of high-temperature and high-pressure materials generated by the battery cell, reduce the impact of thermal runaway battery cells on adjacent battery cells and devices, and the first insulation structure can slow down the heat transfer from the battery cell to the surrounding devices, so that the insulation component can block the heat transfer of the battery cell, which is beneficial to improving the safety of the battery.

[0007] According to the thermal insulation assembly provided in some embodiments of the present application, the first thermal insulation structure is an aerogel structure.

[0008] According to the thermal insulation assembly provided in some embodiments of the present application, the partition plate includes a mica sheet.

[0009] In a second aspect, some embodiments of the present application provide a battery module, which includes a battery cell assembly and a thermal insulation assembly provided by any of the above-mentioned technical solutions, wherein the battery cell assembly includes a plurality of battery cells, and the plurality of battery cells are stacked along a first direction, and a thermal insulation assembly is sandwiched between two adjacent battery cells.

[0010] According to the battery module provided in some embodiments of the present application, a heat insulation component is provided on the outer surface of the battery cell at the end of the battery cell assembly in the first direction.

[0011] According to the battery module provided in some embodiments of the present application, the battery module further includes a heat exchange component, which is arranged on the outside of the battery cell assembly and is bonded to the battery cell in the battery cell assembly.

[0012] According to the battery module provided in some embodiments of the present application, the heat exchange assembly includes a support plate and a heat exchange member, the support plate includes a third side surface and a fourth side surface arranged opposite to each other, the heat exchange member is arranged on the fourth side surface, and the third side surface is in contact with each battery cell in the battery cell assembly.

[0013] According to the battery module provided in some embodiments of the present application, the supporting sheet includes a ceramic sheet.

[0014] According to the battery module provided in some embodiments of the present application, the heat exchange assembly further includes a second heat insulation structure, and the second heat insulation structure is arranged on a side of the heat exchange component away from the support sheet.

[0015] In a third aspect, some embodiments of the present application provide a battery pack, which includes a battery module provided by any of the above technical solutions.

[0016] The technical solution provided by the embodiments of the present disclosure brings at least the following beneficial effects:

[0017] The present application provides a heat insulation component arranged outside a battery cell, the heat insulation component comprises a frame, a partition plate and a first heat insulation structure, the partition plate is located in the accommodation space formed by the frame and connected to the frame, and the first heat insulation structure is provided on the first side and the second side of the frame. The partition plate in the heat insulation component of the above structure can block the impact of high temperature and high pressure materials generated by the battery cell, reduce the impact of the thermal runaway battery cell on adjacent battery cells and devices, and the first heat insulation structure can slow down the heat transfer from the battery cell to the surrounding devices, so that the heat insulation component can block the heat transfer of the battery cell, which is beneficial to improve the safety of the battery.

[0018] The present application also provides a battery module, which includes a battery cell assembly and a heat insulation assembly provided by the above technical solution, wherein a heat insulation assembly is sandwiched between two adjacent battery cells in the battery cell assembly. Since a heat insulation assembly is sandwiched between two adjacent battery cells in the battery module, the battery module has good safety.

[0019] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0021] Figure 1 A disassembled diagram of a thermal insulation assembly provided in some embodiments of the present application;

[0022] Figure 2 A schematic diagram of the structure of a frame in a heat insulation assembly provided in some embodiments of the present application;

[0023] Figure 3 A disassembled diagram of a battery module provided in some embodiments of the present application;

[0024] Figure 4 A schematic diagram of the structure of a battery module provided in some embodiments of the present application;

[0025] Figure 5 A disassembled diagram of a heat exchange assembly provided in some embodiments of the present application;

[0026] Figure 6 A schematic diagram of the structure of a battery pack provided in some embodiments of the present application.

[0027] The reference numerals in the specific implementation manner are as follows:

[0028] 1. thermal insulation assembly; 11. frame; 111. first frame; 112. second frame; 113. third frame; 114. fourth frame; 10. accommodating space; 12. partition plate; 121. first side surface; 122. second side surface; 13. first thermal insulation structure;

[0029] 2. Battery cell assembly; 21. Battery cell;

[0030] 3. heat exchange component; 31. support sheet; 311. third side surface; 312. fourth side surface; 32. heat exchange element; 33. second heat insulation structure;

[0031] 4. Battery module. DETAILED DESCRIPTION

[0032] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0033] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the embodiments of the present application should have the common meanings understood by technicians in the field to which the embodiments of the present application belong.

[0034] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0035] In addition, the technical terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0036] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0037] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0038] In order to block the heat generated by the battery cell and improve the safety of the battery, some embodiments of the present application provide a heat insulation component, a battery module and a battery pack. The technical solutions of the heat insulation component, battery module and battery pack provided in the specific embodiments of the present application are further described below.

[0039] Some embodiments of the present application provide a heat insulation component 1 disposed outside the battery core 21, such as Figure 1 As shown, the thermal insulation assembly 1 includes a frame 11, a partition plate 12 and a first thermal insulation structure 13. The frame 11 forms a accommodating space 10; the partition plate 12 is located in the accommodating space 10 and is connected to the frame 11. The partition plate 12 includes a first side surface 121 and a second side surface 122 that are oppositely arranged, and the first thermal insulation structure 13 is provided on both the first side surface 121 and the second side surface 122.

[0040] The frame 11 may be a component that plays a supporting role in the thermal insulation assembly 1. Other components in the thermal insulation assembly 1 may be directly or indirectly connected to the frame 11, so that the frame 11 can support other components, so that the thermal insulation assembly 1 can present an integral structure for easy arrangement. The accommodating space 10 may be a cavity formed in the frame 11, which is used to set components such as the partition plate 12 and the first thermal insulation structure 13. Exemplarily, the frame 11 may be a U-shaped structure, and the accommodating space 10 is arranged in the middle of the frame 11.

[0041] The partition plate 12 may be a plate-shaped component used to block the impact of high-temperature and high-pressure substances generated by the battery cell 21. The partition plate 12 is arranged in the accommodating space 10, and can block the high-temperature and high-pressure substances generated when the battery cell 21 is out of control and impact outward, thereby reducing the impact and thermal effects of the high-temperature and high-pressure substances on the external components of the battery cell 21. The connection between the partition plate 12 and the frame 11 may be that the outer edge of the partition plate 12 is connected to the inner edge of the accommodating space 10 in the frame 11, which not only enables the partition plate 12 and the frame 11 to be arranged synchronously, but also enables the partition plate 12 to block the accommodating space 10 in the frame 11, thereby reducing the possibility of high-temperature and high-pressure substances generated by the out-of-control battery cell 21 leaking outward from the gap between the partition plate 12 and the frame 11.

[0042] The first side surface 121 and the second side surface 122 may be two side surfaces of the partition plate 12 that are spaced apart from each other, and the material forming the partition plate 12 is located between the two side surfaces.

[0043] The first thermal insulation structure 13 may be a structure for thermal insulation provided on the partition plate 12. By providing the first thermal insulation structure 13 on the partition plate 12, the thermal insulation capacity of the partition plate 12 can be improved, so that the thermal insulation assembly 1 can slow down the heat transfer from the battery cell 21 to surrounding devices.

[0044] In some embodiments, the first side surface 121 and the second side surface 122 may both be provided with a first heat insulating structure 13, and the first heat insulating structure 13 may block the heat transfer from the battery cell 21 to the partition plate 12, and slow down the transfer of heat from the battery cell 21 to the surrounding components. In other embodiments, the first side surface 121 or the second side surface 122 may be provided with a first heat insulating structure 13, and the first heat insulating structure 13 may block the heat transferred to the partition plate 12 or block the heat transfer from the battery cell 21 to the partition plate 12.

[0045] In the above structure, the partition plate 12 can block the impact of high-temperature and high-pressure materials generated by the battery cell 21, reduce the impact of the thermal runaway battery cell 21 on adjacent battery cells 21 and devices, and the first thermal insulation structure 13 can slow down the heat transfer from the battery cell 21 to the surrounding devices, so that the thermal insulation component 1 can block the heat transfer of the battery cell 21, which is beneficial to improving the safety of the battery.

[0046] In some embodiments, the first side surface 121 and the second side surface 122 of the partition plate 12 are both provided with a first thermal insulation structure 13, and the thickness of the frame 11 can be set to be equal to the sum of the thickness of the partition plate 12 and the thickness of the two first thermal insulation structures 13, so that the side surface of the frame 11 is flush with the side surface of the first thermal insulation structure 13, so that the thermal insulation assembly 1 is conveniently arranged between two adjacent battery cells 21. Exemplarily, the thickness of the frame 11 can be set to 4 mm, the thickness of the partition plate 12 can be set to 1.5 mm, and the thickness of the two first thermal insulation structures 13 can be set to 1.25 mm.

[0047] In some embodiments, the first thermal insulation structure 13 is an aerogel structure.

[0048] The aerogel structure refers to a structure formed by aerogel. By configuring the first thermal insulation structure 13 as an aerogel structure, the first thermal insulation structure 13 is an elastic structure capable of elastic deformation. By making the first thermal insulation structure 13 an aerogel structure capable of elastic deformation, when the battery cell 21 expands and squeezes the thermal insulation assembly 1, the first thermal insulation structure 13 can be compressed and deformed, providing expansion space for the expansion of the battery cell 21. By arranging the first thermal insulation structure 13 on the surface of the partition plate 12 located in the accommodating space 10, the frame 11 can limit the compression of the first thermal insulation structure 13, reducing the possibility of the first thermal insulation structure 13 being over-compressed.

[0049] Aerogel not only has good thermal insulation capabilities, but also has a low density, which helps to increase the energy density of batteries.

[0050] In some embodiments, Figure 2 As shown, the frame 11 includes a first frame 111, a second frame 112, a third frame 113 and a fourth frame 114. The first frame 111 and the second frame 112 are relatively spaced apart, the third frame 113 and the fourth frame 114 are relatively spaced apart, and the third frame 113 and the fourth frame 114 are both connected between the first frame 111 and the second frame 112. The first frame 111, the second frame 112, the third frame 113 and the fourth frame 114 enclose a accommodating space 10.

[0051] The first frame 111, the second frame 112, the third frame 113 and the fourth frame 114 may be structures constituting the frame body 11, and can enclose the accommodation space 10. By relatively arranging the first frame 111 and the second frame 112, relatively arranging the third frame 113 and the fourth frame 114, the third frame 113 is connected between the first frame 111 and the second frame 112, and the fourth frame 114 is connected between the first frame 111 and the second frame 112, so that the first frame 111, the third frame 113, the second frame 112 and the fourth frame 114 are sequentially connected to enclose the accommodation space 10.

[0052] In some embodiments, the first frame 111, the second frame 112, the third frame 113 and the fourth frame 114 can be an integrally formed structure. The first frame 111, the second frame 112, the third frame 113 and the fourth frame 114 can be made by an integrally formed processing method such as injection molding, so that the frame 11 can be manufactured as a whole synchronously, which not only makes the processing and manufacturing of the frame 11 convenient, but also makes the overall structure of the frame 11 have good strength; the first frame 111, the second frame 112, the third frame 113 and the fourth frame 114 can also be made by machining a whole piece of blank by machining a whole piece of blank by machining a whole piece of blank, so that the frame 11 has a lower processing difficulty and processing cost.

[0053] For example, the frame 11 can be made of polycarbonate. Since polycarbonate has good strength and toughness, the frame can stably support the partition plate 12.

[0054] In some embodiments, separator plate 12 comprises a mica sheet.

[0055] The mica sheet has good insulation and low-loss thermal resistance functions, so that the partition plate 12 has good insulation and heat insulation capabilities, which is beneficial to improving the heat insulation capacity of the insulation component 1.

[0056] like Figure 3 and Figure 4 As shown, some embodiments of the present application also provide a battery module 4, which includes a battery cell assembly 2 and a thermal insulation assembly 1 provided by the aforementioned technical solution, the battery cell assembly 2 includes a plurality of battery cells 21, the plurality of battery cells 21 are stacked along a first direction, and a thermal insulation assembly 1 is sandwiched between two adjacent battery cells 21.

[0057] A plurality of battery cells 21 are stacked along a first direction to form a battery cell assembly 2. The plurality of battery cells can be connected in series, in parallel, or in mixed connection. Mixed connection means that the plurality of battery cells are connected in series and in parallel, so that the battery cell assembly 2 can be used as a module that provides higher voltage and capacity.

[0058] Each battery cell 21 may be a lithium ion battery cell, a sodium ion battery cell or a magnesium ion battery cell, but is not limited thereto.

[0059] Since the heat insulation component 1 is sandwiched between two adjacent battery cells 21 in the battery module 4 , the heat insulation component 1 can block the heat transfer between the battery cells 21 , so that the battery module 4 has better safety.

[0060] In some embodiments, a heat insulation component 1 is provided on the outer side surface of the battery cell 21 at the end of the battery cell assembly 2 in the first direction.

[0061] The thermal insulation component 1 may be provided on the outer side of the battery cell 21 at the end of the battery cell assembly 2 in the first direction. This allows the heat transfer between the battery cell 21 at the end of the battery cell assembly 2 and external devices to be blocked by the thermal insulation component 1, thereby reducing the heat transfer of the battery module 4 to adjacent battery modules 4 or devices, which is beneficial to improving the safety of the battery module 4.

[0062] In some embodiments, the battery module 4 further includes a heat exchange component 3 , which is disposed outside the battery cell assembly 2 and is in contact with the battery cell 21 in the battery cell assembly 2 .

[0063] The heat exchange component 3 can be a component used to exchange heat with the battery cell 21 in the battery cell assembly 2. It can make the temperature of the battery cell 21 within a suitable temperature range by exchanging heat with the battery cell 21, which is conducive to keeping the battery cell 21 in a stable working state.

[0064] By bonding the heat exchange assembly 3 to the battery cell 21 in the battery cell assembly 2, the battery cell 21 can exchange heat with the heat exchange assembly 3, so that the heat exchange assembly 3 can maintain the temperature of the battery cell 21 within a suitable temperature range.

[0065] In some embodiments, Figure 5 As shown, the heat exchange assembly 3 includes a support plate 31 and a heat exchange member 32 . The support plate 31 includes a third side surface and a fourth side surface that are relatively arranged. The heat exchange member 32 is arranged on the fourth side surface. The third side surface is in contact with each battery cell 21 in the battery cell assembly 2 .

[0066] The support sheet 31 may be the main structure in the heat exchange assembly 3, which is used to support other components in the heat exchange assembly 3. By fitting the support sheet 31 and the battery cell 21, components such as the heat exchange element 32 connected to the support sheet 31 can exchange heat with the battery cell 21. By connecting the heat exchange element 32 to the support sheet 31 instead of directly connecting it to the battery cell 21, the heat exchange element 32 will not be pulled when the battery cell 21 expands, which is conducive to reducing the possibility of damage to the heat exchange element 32 and helping to maintain the stable heat exchange performance of the heat exchange element 32.

[0067] The third side surface and the fourth side surface may be two side surfaces arranged at a relative interval on the support sheet 31, and the material forming the support sheet 31 is between the two. The third side surface is arranged toward the battery cell 21, and the fourth side surface is arranged away from the battery cell 21. By arranging the heat exchanger 32 on the fourth side surface, the third side surface is attached to each battery cell 21 in the battery cell assembly 2, so that the heat exchanger 32 can exchange heat with each battery cell 21 in the battery cell assembly 2 through the support sheet 31.

[0068] In some embodiments, the support sheet 31 is made of a material having thermal conductivity, so that the heat exchanger 32 can exchange heat with each battery cell 21 through the support sheet 31. Exemplarily, the support sheet 31 can be made of a ceramic sheet, so that the support sheet 31 has good insulation and thermal conductivity. Specifically, the support sheet 31 can be made of an alumina ceramic sheet, which has good thermal conductivity, so that the heat exchanger 32 can quickly exchange heat with each battery cell 21 through the support sheet 31.

[0069] Exemplarily, the heat exchanger 32 may include a thermistor heating film, so that the thickness of the heat exchanger 32 is relatively thin, which is beneficial to reducing the space occupied by the battery module 4. The thermistor heating film is arranged on the fourth side of the support sheet 31, so that the thermistor heating film can heat the battery cell 21 through the support sheet 31, and is not easy to fall off or wrinkle due to the expansion of the battery cell 21.

[0070] In some embodiments, a thermal conductive adhesive is provided on the third side of the support sheet 31 , and the third side can be bonded to each battery cell 21 in the battery cell assembly 2 through the thermal conductive adhesive, so that heat transfer between the support sheet 31 and each battery cell 21 is good.

[0071] In some embodiments, the heat exchange assembly 3 further includes a second heat insulation structure 33 , and the second heat insulation structure 33 is disposed on a side of the heat exchange element 32 away from the support sheet 31 .

[0072] The second heat insulation structure 33 may be a structure for heat insulation provided on the heat exchange member 32. By providing the second heat insulation structure 33 on the heat exchange member 32, the heat exchange assembly 3 has heat insulation capability, so that the heat insulation assembly 1 can slow down the heat transfer from the battery cell 21 of the battery cell assembly 2 to the surrounding devices. By providing the second heat insulation structure 33 on the side of the heat exchange member 32 away from the support sheet 31, the heat dissipation of the heat exchange member 32 to the side away from the support sheet 31 is blocked, thereby effectively reducing the possibility of heat transfer from the battery module 4 to external devices.

[0073] Some embodiments of the present application also provide a battery pack, such as Figure 6 As shown, the battery pack includes the battery module 4 provided by the above technical solution.

[0074] Exemplarily, the battery module 4 in the battery pack may be one or more, and the multiple battery modules 4 may be connected in series, in parallel, or in mixed connection. Mixed connection means that the multiple battery modules 4 are connected in series and in parallel, so that the battery pack can form a module that provides higher voltage and capacity.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A thermal insulation component, characterized in that: Arranged outside the battery core, the thermal insulation component includes: A frame body is formed with a containing space; A partition plate, located in the accommodating space and connected to the frame, the partition plate comprising a first side surface and a second side surface that are oppositely disposed; A first heat insulation structure is provided on both the first side surface and the second side surface.

2. The thermal insulation assembly according to claim 1, characterized in that The first thermal insulation structure is an aerogel structure.

3. The thermal insulation assembly according to claim 1, characterized in that: The separator plate includes a mica sheet.

4. A battery module, characterized in that: include: A battery cell assembly, the battery cell assembly comprising a plurality of battery cells, wherein the plurality of battery cells are stacked along a first direction; The thermal insulation assembly as described in any one of claims 1 to 3, wherein the thermal insulation assembly is sandwiched between two adjacent battery cells.

5. The battery module according to claim 4, characterized in that: The battery cell assembly is provided with the heat insulation assembly on the outer surface of the battery cell at the end portion in the first direction.

6. The battery module according to claim 4, characterized in that: The battery module also includes a heat exchange component, which is arranged outside the battery core assembly and is attached to the battery core in the battery core assembly.

7. The battery module according to claim 6, characterized in that: The heat exchange assembly includes a support plate and a heat exchange member, the support plate includes a third side surface and a fourth side surface that are arranged opposite to each other, the heat exchange member is arranged on the fourth side surface, and the third side surface is in contact with each of the battery cells in the battery cell assembly.

8. The battery module according to claim 7, characterized in that: The supporting sheet includes a ceramic sheet.

9. The battery module according to claim 7, characterized in that: The heat exchange assembly further includes a second heat insulation structure, which is disposed on a side of the heat exchange element away from the support sheet.

10. A battery pack, characterized in that: Comprising a battery module as claimed in any one of claims 4 to 9.

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