Shell, battery pack and vehicle

Abstract

The utility model discloses a shell, a battery pack and a vehicle, the shell is used for the battery pack and comprises a shell body and a turbulent flow structure, a heat exchange runner is formed in the wall of the shell body, and the turbulent flow structure is arranged in the heat exchange runner. According to the shell provided by the embodiment of the utility model, the turbulent flow structure is arranged in the heat exchange runner, the cooling liquid flows in the heat exchange runner for heat exchange, the turbulent flow structure can change the flow state of the cooling liquid in the heat exchange runner, and the cooling liquid is changed from laminar flow to turbulent flow and needs to continuously absorb heat to the outside to maintain the conversion process of the flow state; therefore, the heat exchange efficiency of the cooling liquid is improved, the heat dissipation efficiency of the battery pack is improved, and rapid heat dissipation of the battery pack is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of power battery equipment, and in particular to a housing, a battery pack and a vehicle. Background Art

[0002] Currently, some vehicles, aircraft, robots, and other devices use battery packs as power sources. Battery packs generate a lot of heat during operation, and the cells within them need to be cooled to prevent overheating, which can shorten the lifespan of the battery pack and even lead to accidents such as spontaneous combustion.

[0003] In the related art, a liquid cooling structure is generally provided on the battery pack housing to dissipate heat and cool the batteries in the battery pack. However, due to the limitations of the liquid cooling structure, the heat dissipation and cooling efficiency is poor and needs further improvement. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide a housing having a heat exchange channel provided in the wall of the housing body, wherein a coolant flows in the heat exchange channel for heat exchange, and a flow disturbance structure is provided in the heat exchange channel to change the flow state of the coolant in the heat exchange channel, so that the coolant changes from laminar flow to turbulent flow, and needs to continuously absorb heat from the outside to maintain the flow state change process, thereby improving the heat exchange efficiency of the coolant and the heat dissipation efficiency of the battery pack, thereby achieving rapid heat dissipation of the battery pack.

[0005] The utility model also provides a battery pack having the above-mentioned shell.

[0006] The utility model also provides a vehicle with a battery pack.

[0007] The shell according to the embodiment of the first aspect of the present invention is used for a battery pack and includes a shell body and a spoiler structure. A heat exchange channel is formed in the wall of the shell body, and the spoiler structure is arranged in the heat exchange channel.

[0008] According to the shell of the embodiment of the present invention, a turbulent flow structure is provided in the heat exchange flow channel, and the coolant flows and exchanges heat in the heat exchange flow channel. The turbulent flow structure can change the flow state of the coolant in the heat exchange flow channel, and the coolant changes from laminar flow to turbulent flow. It is necessary to continuously absorb heat from the outside to maintain the flow state change process, thereby improving the heat exchange efficiency of the coolant and the heat dissipation efficiency of the battery pack, so as to achieve rapid heat dissipation of the battery pack.

[0009] According to some embodiments of the present invention, the spoiler structure includes a plurality of spoiler blocks, and at least some of the spoiler blocks are arranged at intervals along the extension direction of the heat exchange channel.

[0010] According to some embodiments of the present invention, two adjacent spoilers are staggered in the extension direction of the heat exchange channel and the width direction of the heat exchange channel; and / or the size of the spoiler in the width direction of the heat exchange channel is less than half the width of the heat exchange channel.

[0011] According to some embodiments of the present invention, the shell includes a lower shell, the lower shell includes a base plate and an upper cover plate, the upper cover plate is connected to the upper side of the base plate and defines the heat exchange flow channel between the upper cover plate and the base plate, a flow channel groove is formed on the base plate, the flow channel groove constitutes at least a part of the heat exchange flow channel, and the spoiler is arranged in the flow channel groove and connected to the inner wall of the flow channel groove.

[0012] According to some embodiments of the present invention, the spoiler and the bottom plate are integrally formed.

[0013] According to some embodiments of the present invention, the shell includes a lower shell, the lower shell includes a base plate and an upper cover plate, the upper cover plate is connected to the upper side of the base plate and defines the heat exchange channel between the upper cover plate and the base plate, and the upper cover plate and the base plate are bonded by structural adhesive.

[0014] According to some embodiments of the present invention, the shell includes a lower shell, the lower shell includes a base plate and an upper cover plate, the upper cover plate is connected to the upper side of the base plate and defines the heat exchange flow channel between the upper cover plate and the base plate, the upper cover plate is a metal part, and the base plate is a composite material part; the upper cover plate is an aluminum alloy part; the base plate includes a base and a reinforcement structure provided on the base, the base is a resin base, a metal base or a ceramic base, and the reinforcement structure includes carbon fiber or glass fiber.

[0015] According to some embodiments of the present invention, the housing includes a lower housing, the lower housing includes a bottom plate and an upper cover plate, the upper cover plate is connected to the upper side of the bottom plate and defines the heat exchange flow channel between the upper cover plate and the bottom plate, the upper cover plate is a metal part, the bottom plate is a composite material part, and the density range of the bottom plate is 1200kg / m 3 ~2000kg / m 3 .

[0016] A battery pack according to an embodiment of the second aspect of the present invention includes: a shell according to the embodiment of the first aspect of the present invention; and a battery assembly disposed in the shell and thermally connected to the shell body.

[0017] According to the battery pack of the embodiment of the present invention, by providing the above-mentioned shell, rapid heat dissipation of the battery pack can be achieved, the service life of the battery pack can be extended, and the safety of the battery pack can be improved.

[0018] A vehicle according to an embodiment of the third aspect of the present invention includes: a battery pack according to an embodiment of the second aspect of the present invention.

[0019] According to the vehicle of the embodiment of the present invention, by providing the above-mentioned battery pack, it is beneficial to accelerate the heat dissipation of the battery pack, extend the service life of the battery pack, and improve the safety of the battery pack.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 is a schematic diagram of an upper cover plate of a housing according to some embodiments of the present utility model;

[0023] Figure 2 is a schematic diagram of a bottom plate of a housing according to some embodiments of the present invention;

[0024] Figure 3 yes Figure 2 A three-dimensional schematic diagram of the base plate in FIG.

[0025] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0026] Reference numerals:

[0027] 100, housing;

[0028] 1. Housing body; 11. Lower housing; 12. Bottom plate; 101. Flow channel groove; 102. Inlet group; 103. Outlet group; 104. Main inlet channel; 105. First branch channel; 106. Main outlet channel; 107. Second branch channel; 108. Connecting channel; 109. Liquid inlet; 110. Liquid outlet; 13. Upper cover plate;

[0029] 2. Heat exchange channel;

[0030] 3. Spoiler structure; 31. Spoiler block. DETAILED DESCRIPTION

[0031] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0032] Reference below Figures 1-4 A housing 100 according to an embodiment of the present invention is described.

[0033] Reference Figures 1-4 According to the embodiment of the first aspect of the present invention, the shell 100 is used for a battery pack and includes a shell 100 body and a spoiler structure 3. A heat exchange channel 2 is formed in the wall of the shell 100 body, and the heat exchange channel 2 is used for the flow of cooling liquid. The battery pack includes a shell 100 and a battery assembly arranged in the shell 100. The battery assembly may include a plurality of battery cells. The battery assembly is thermally connected to the shell 100. For example, a thermal conductive glue may be provided between the battery assembly and the inner wall of the shell 100 body. When the battery pack is working, the battery assembly generates heat, and the battery assembly transfers the generated heat to the shell 100. The coolant flowing in the heat exchange channel 2 of the shell 100 can absorb the heat transferred to the shell 100. When the coolant flows out of the shell 100, it can take away the heat generated by the battery pack, thereby cooling and dissipating the heat of the battery pack.

[0034] The flow disturbance structure 3 is provided in the heat exchange channel 2. By providing the flow disturbance structure 3 in the heat exchange channel 2, the coolant entering the heat exchange channel 2 can be disturbed. The coolant enters the heat exchange channel 2 in laminar flow, and can be transformed from laminar flow to turbulent flow when passing through the flow disturbance structure 3. It can be understood that the transformation of the coolant flow state requires continuous absorption of heat to maintain the process of the coolant flow state transformation. In this way, the heat generated by the battery pack can be absorbed more by the coolant, making the heat exchange between the flowing coolant in the heat exchange channel 2 and the housing 100 more sufficient, and the heat dissipation efficiency of the battery pack can be improved.

[0035] According to the shell 100 of the embodiment of the present invention, by arranging the spoiler structure 3 in the heat exchange channel 2, the spoiler structure 3 can change the flow state of the coolant in the heat exchange channel 2, and the coolant is transformed from laminar flow to turbulent flow. It is necessary to continuously absorb heat from the outside to maintain the flow state transformation process, thereby improving the heat exchange efficiency of the coolant and the heat dissipation efficiency of the battery pack, so as to achieve rapid heat dissipation of the battery pack.

[0036] According to some embodiments of the present invention, referring to Figure 2-Figure 4The flow-disturbing structure 3 includes a plurality of flow-disturbing blocks 31, at least some of which are arranged at intervals along the extension direction of the heat exchange channel 2. When the coolant flows in the heat exchange channel 2, by providing a plurality of flow-disturbing blocks 31 and at least some of which are arranged at intervals along the extension direction of the heat exchange channel 2, the coolant is continuously disturbed by the flow-disturbing blocks 31 during the flow of the coolant along the extension direction of the heat exchange channel 2. This can fully disturb the coolant, so that the flow state of the coolant can be continuously changed during the flow of the coolant in the heat exchange channel 2, thereby continuously absorbing more heat, making the heat exchange between the coolant flowing in the heat exchange channel 2 and the housing 100 more sufficient, and further improving the heat dissipation efficiency of the battery pack.

[0037] According to some embodiments of the present invention, referring to Figure 2-Figure 4 The two adjacent spoiler blocks 31 are staggered in the extension direction of the heat exchange channel 2 and the width direction of the heat exchange channel 2. The staggered spoiler blocks 31 can more efficiently turbulent the coolant, making the heat exchange between the coolant and the shell 100 more sufficient, thereby further improving the heat dissipation effect.

[0038] According to some embodiments of the present invention, referring to Figure 2-Figure 4 The dimension of the spoiler 31 in the width direction of the heat exchange channel 2 is less than half the width of the heat exchange channel 2, which can reduce the resistance to the coolant flowing in the heat exchange channel 2. If the dimension of the spoiler 31 in the width direction of the heat exchange channel 2 is not less than half the width of the heat exchange channel 2, the resistance to the coolant flowing in the heat exchange channel 2 will increase, reducing the flow rate of the coolant and thus causing a deterioration in the heat dissipation effect. Therefore, by setting the dimension of the spoiler 31 in the width direction of the heat exchange channel 2 to less than half the width of the heat exchange channel 2, the resistance to the coolant flowing in the heat exchange channel 2 can be reduced.

[0039] According to some embodiments of the present invention, referring to Figure 2-Figure 4 The two adjacent spoiler blocks 31 are staggered in the extension direction and the width direction of the heat exchange channel 2, and the size of the spoiler blocks 31 in the width direction of the heat exchange channel 2 is less than half the width of the heat exchange channel 2. By staggering the spoiler blocks 31 in the extension direction and the width direction of the heat exchange channel 2, when the coolant flows in the extension direction of the heat exchange channel 2, the staggered spoiler blocks 31 can more efficiently turbulent the coolant, making the heat exchange between the coolant and the housing 100 more sufficient, thereby improving the heat dissipation effect of the housing 100; and because the size of the spoiler blocks 31 in the width direction of the heat exchange channel 2 is less than half the width of the heat exchange channel 2, the resistance to the coolant flowing in the heat exchange channel 2 can be reduced.

[0040] According to some embodiments of the present invention, referring to Figure 1 and Figure 2 The housing 100 includes a lower housing 11, which includes a base plate 12 and an upper cover plate 13. The upper cover plate 13 is connected to the upper side of the base plate 12, and a heat exchange channel 2 is defined between the upper cover plate 13 and the base plate 12. A channel groove 101 is formed on the base plate 12, and the channel groove 101 constitutes at least a portion of the heat exchange channel 2. The heat exchange channel 2 is located on the upper surface of the base plate 12 and can guide the coolant. As the coolant continues to flow, it can dissipate heat and cool down the base plate 12 and the upper cover plate 13. This allows for rapid heat exchange between the base plate 12 and the upper cover plate 13, thereby removing heat from the battery pack and achieving rapid heat dissipation for the battery pack.

[0041] Reference Figure 2 The spoiler block 31 is arranged in the flow channel groove 101 and is connected to the inner wall of the flow channel groove 101. By arranging the spoiler block 31 in the flow channel groove 101, the flow state of the coolant can be changed from laminar flow to turbulent flow. When the flow state of the coolant changes, it needs to absorb heat from the external environment (such as the bottom plate 12 and the upper cover plate 13). The coolant completes the flow state change while continuing to flow, thereby increasing the heat absorbed by the coolant, thereby improving the heat exchange effect on the lower shell 11, thereby improving the heat dissipation effect of the battery pack.

[0042] According to some embodiments of the present invention, the spoiler 31 is integrally formed with the bottom plate 12. This can improve the structural strength of the bottom plate 12 and the stability and reliability of the spoiler 31 in the heat exchange channel 2, and eliminate the connection process between the bottom plate 12 and the spoiler 31.

[0043] According to some embodiments of the present invention, referring to Figures 1-4 The bottom plate 12 and the upper cover plate 13 together define a heat exchange channel 2. The heat exchange channel 2 includes a channel groove 101 formed on the bottom plate 12, and a spoiler 31 is disposed within the channel groove 101. A liquid inlet 109 and a liquid outlet 110 are formed on the upper cover plate 13. An inlet group 102 and an outlet group 103 are arranged across the width of the heat exchange channel 2. The inlet group 102 is located on the side of the heat exchange channel 2 adjacent to the liquid inlet 109 of the upper cover plate 13, and the outlet group 103 is located on the side of the heat exchange channel 2 adjacent to the liquid outlet 110 of the upper cover plate 13. The inlet group 102 includes a main inlet channel 104 and a first branch channel 105, and the outlet group 103 includes a main outlet channel 106 and a second branch channel 107. The first branch channel 105 and the second branch channel 107 each include at least two channel grooves 101, and a connecting channel 108 is provided between the first branch channel 105 and the second branch channel 107.

[0044] Reference Figure 1A liquid inlet 109 and a liquid outlet 110 are formed on the upper cover plate 13 to allow the coolant to enter the lower shell 11 from the liquid inlet 109. After the coolant completes the heat exchange inside the lower shell 11, the coolant can flow out from the liquid outlet 110 of the upper cover plate 13 to complete the heat exchange with the lower shell 11.

[0045] Reference Figure 2 The inlet group 102 is located on one side of the heat exchange channel 2 in the width direction, close to the liquid inlet 109 of the upper cover plate 13, and is used to cooperate with the liquid inlet 109 of the upper cover plate 13. The coolant enters through the liquid inlet 109 of the upper cover plate 13, and can guide the coolant through the inlet group 102 to flow into the heat exchange channel 2 for heat exchange; the outlet group 103 is located on one side of the heat exchange channel 2 in the width direction, close to the liquid outlet 110 of the upper cover plate 13, and is used to cooperate with the liquid outlet 110 of the upper cover plate 13, and can guide the coolant after heat exchange in the heat exchange channel 2 to flow out of the heat exchange channel 2 through the outlet group 103, and finally flow out from the liquid outlet 110 of the upper cover plate 13.

[0046] Reference Figure 2 The inlet group 102 includes a main inlet channel 104 and a first branch channel 105, and the outlet group 103 includes a main outlet channel 106 and a second branch channel 107. A connecting channel 108 is provided between the first branch channel 105 and the second branch channel 107. The connecting channel 108 can ensure that the coolant flowing out of the first branch channel 105 flows smoothly into the second branch channel 107. For example, the coolant enters the main inlet channel 104 through the liquid inlet 109 of the upper cover plate 13, flows into the first branch channel 105 through the main inlet channel 104, and then passes through the connecting channel 108 between the first branch channel 105 and the second branch channel 107, so that the coolant flowing out of the first branch channel 105 enters the second branch channel 107 through the connecting channel 108, and then the coolant flowing in the second branch channel 107 flows to the main outlet channel 106, and finally the coolant flows out from the liquid outlet 110 of the upper cover plate 13, completing the heat exchange in the lower shell 11.

[0047] The first branch channel 105 and the second branch channel 107 each include at least two flow channel grooves 101. The coolant flows along the same path within the flow channel grooves 101 of the first branch channel 105, and the coolant flows along the same path within the flow channel grooves 101 of the second branch channel 107. By providing at least two parallel-connected flow channel grooves 101 in each of the first branch channel 105 and the second branch channel 107, with both ends of the flow channel grooves 101 connected in parallel, the coolant can flow through each of the parallel-connected flow channel grooves 101, allowing the coolant to flow evenly within the heat exchange channel 2. This can evenly distribute heat exchange with the lower shell 11, thereby improving the service life of the lower shell 11.

[0048] For example, the coolant is diverted into the first diverter channel 105 through the main inlet channel 104. By setting at least two flow channel grooves 101, the coolant can flow more evenly in the inlet group 102. The flow of the coolant takes away the heat, which can make the heat exchange distribution between the coolant and the inlet group 102 more uniform, thereby improving the service life of the lower shell 11.

[0049] According to some embodiments of the present invention, the housing 100 includes a lower housing 11, which includes a base plate 12 and an upper cover plate 13. The upper cover plate 13 is connected to the upper side of the base plate 12, and a heat exchange channel 2 is defined between the upper cover plate 13 and the base plate 12. The upper cover plate 13 and the base plate 12 are bonded together by structural adhesive. Compared with rivet connection, the structural adhesive connection is lighter, the joint is smoother, and the sealing is better. The connection process is simple, which can reduce manufacturing costs. Therefore, the use of structural adhesive to bond the upper cover plate 13 and the base plate 12 can improve the sealing, reduce the weight of the housing 100, and reduce the complexity of the connection process, thereby reducing manufacturing costs.

[0050] According to some embodiments of the present invention, the housing 100 includes a lower housing 11, which includes a base plate 12 and an upper cover plate 13. The upper cover plate 13 is connected to the upper side of the base plate 12 and defines a heat exchange channel 2 between the upper cover plate 13 and the base plate 12. The upper cover plate 13 is metal, while the base plate 12 is composite. Compared to using both the upper cover plate 13 and the base plate 12 as metal, using metal for the upper cover plate 13 and composite for the base plate 12 can meet the required structural strength of the lower housing 11 and reduce its weight.

[0051] For example, the upper cover plate 13 may be made of an aluminum alloy. The upper cover plate 13 made of an aluminum alloy has a longer service life and higher heat exchange efficiency.

[0052] According to some embodiments of the present invention, the base plate 12 includes a base and a reinforcement structure provided on the base. The base is a resin base, a metal base, or a ceramic base, and the reinforcement structure includes carbon fiber or glass fiber. Optionally, the base of the base plate 12 may be a resin base, and the reinforcement structure may be carbon fiber; the base of the base plate 12 may be a resin base, and the reinforcement structure may be glass fiber; the base of the base plate 12 may be a metal base, and the reinforcement structure may be carbon fiber; the base of the base plate 12 may be a metal base, and the reinforcement structure may be glass fiber; the base of the base plate 12 may be a ceramic base, and the reinforcement structure may be carbon fiber; the base of the base plate 12 may be a ceramic base, and the reinforcement structure may be glass fiber.

[0053] According to some embodiments of the present invention, the housing 100 includes a lower housing 11, which includes a bottom plate 12 and an upper cover plate 13. The upper cover plate 13 is connected to the upper side of the bottom plate 12 and defines a heat exchange flow channel 2 between the upper cover plate 13 and the bottom plate 12. The upper cover plate 13 is a metal part, and the bottom plate 12 is a composite material part. The density range of the bottom plate 12 is 1200 kg / m 3 ~2000kg / m 3 For example, the density of the bottom plate 12 can be 1200 kg / m 3 、1350kg / m 3 、1500kg / m 3 、1750kg / m 3 、1900kg / m 3 , 2000kg / m 3 As a result, when the volume of the bottom plate 12 remains unchanged, the weight of the bottom plate 12 can be made smaller, and the weight of the housing 100 can be further reduced.

[0054] By setting the density of the bottom plate 12 to not less than 1200 kg / m 3 , can meet the mechanical strength required by the bottom plate 12; by setting the density of the bottom plate 12 to no more than 2000kg / m 3 , it is possible to ensure that the weight of the bottom plate 12 is reduced; thus, by setting the density range of the bottom plate 12 to 1200kg / m 3 ~2000kg / m 3 , which can meet the mechanical strength required by the base plate 12 and reduce the weight of the base plate 12.

[0055] The battery pack according to the second embodiment of the present invention includes: the housing 100 according to the first embodiment of the present invention; and a battery assembly disposed in the housing 100 and thermally connected to the housing 100 body.

[0056] According to the battery pack of the embodiment of the present invention, by providing the above-mentioned housing 100, rapid heat dissipation of the battery pack can be achieved, the service life of the battery pack can be extended, and the safety of the battery pack can be improved.

[0057] A vehicle according to an embodiment of the third aspect of the present invention includes: a battery pack according to an embodiment of the second aspect of the present invention.

[0058] According to the vehicle of the embodiment of the present invention, by providing the above-mentioned battery pack, it is beneficial to accelerate the heat dissipation of the battery pack, extend the service life of the battery pack, and improve the safety of the battery pack. In the description of the present invention, "multiple" means two or more.

[0059] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0060] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A housing, characterized in that: A device for a battery pack comprising a housing body and a flow-disturbing structure, wherein a heat exchange channel is formed in a wall of the housing body, and the flow-disturbing structure is arranged in the heat exchange channel; The flow-disturbing structure includes a plurality of flow-disturbing blocks, at least some of which are arranged at intervals along the extension direction of the heat exchange channel; The housing includes a lower housing, the lower housing includes a bottom plate and an upper cover plate, the upper cover plate is connected to the upper side of the bottom plate and defines the heat exchange flow channel between the upper cover plate and the bottom plate, a flow channel groove is formed on the bottom plate, the flow channel groove constitutes at least a part of the heat exchange flow channel, the spoiler is arranged in the flow channel groove and connected to the inner wall of the flow channel groove; The upper cover is a metal part, the bottom plate is a composite material part, the bottom plate includes a base and a reinforcement structure provided on the base, the base is a resin base, a metal base or a ceramic base, and the reinforcement structure includes carbon fiber or glass fiber; Wherein, the upper cover plate is formed with a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are located at the same end of the upper cover plate.

2. The housing according to claim 1, wherein: Two adjacent spoilers are staggered in the extension direction of the heat exchange channel and in the width direction of the heat exchange channel; and / or the size of the spoiler in the width direction of the heat exchange channel is less than half the width of the heat exchange channel.

3. The housing according to claim 1, wherein: The spoiler block and the bottom plate are integrally formed.

4. The housing according to any one of claims 1 to 2, characterized in that: The upper cover plate and the bottom plate are bonded together by structural adhesive.

5. The housing according to any one of claims 1 to 2, characterized in that: The upper cover plate is made of aluminum alloy.

6. The housing according to any one of claims 1 to 2, characterized in that: The density range of the bottom plate is 1200kg / m 3 ~2000kg / m 3 .

7. A battery pack, characterized in that: include: The housing according to any one of claims 1 to 6; The battery assembly is arranged in the shell and is thermally connected to the shell body.

8. A vehicle, characterized in that: include: The battery pack according to claim 7.

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