Battery pack and vehicle

Abstract

A battery pack (100) and a vehicle (200). The battery pack (100) comprises a support plate (140), a battery assembly (110) disposed on a surface (141) of the support plate (140), and a support assembly (120), wherein the battery assembly (110) comprises a plurality of battery modules (111) stacked in the height direction of the battery pack (100), each battery module (111) comprising two end plates (1111) distributed in a first direction, and a battery cell arranged between the two end plates (1111), and an included angle being formed between the height direction and the first direction; the support assembly (120) comprises support structures (121) distributed on two sides of the battery assembly (110) in the first direction, each support structure (121) comprising a plurality of support members (1211) arranged in the height direction; and between the two end plates (1111) adjacent to each other in the height direction, the lower end plate (1111) supports the upper end plate (1111) by means of a support member (1211), wherein the end plate (1111) is fixedly connected to the adjacent lower support member (1211) by means of a first connector (131), and the support member (1211) is fixedly connected to the adjacent lower end plate (1111) by means of a second connector (132). The battery pack (100) and the vehicle (200) have low requirements for the stacking accuracy of the battery modules (111), which is conducive to improving the assembly efficiency of the battery pack (100), thereby increasing the production efficiency of the vehicle (200).

Description

Battery pack and vehicle

[0001] The present application claims priority to the Chinese patent application No. 202421537541.3, filed on July 01, 2024, to the Chinese Patent Office, the whole content of the above application being incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of battery, in particular to a battery pack and a vehicle. BACKGROUND

[0003] In the related art, in order to improve the total energy of the battery pack, multiple battery modules of the battery pack are stacked, and then a longer connecting piece is passed through the end plates of the multiple battery modules to fixedly connect the multiple battery modules together. SUMMARY

[0004] However, in order to enable the connecting piece to accurately pass through the end plates of the multiple battery modules, the multiple battery modules of the battery pack need to be accurately positioned at one time when the multiple battery modules of the battery pack are stacked, which has a high positioning requirement and affects the assembly efficiency of the battery pack.

[0005] The present application provides a battery pack. The battery pack comprises:

[0006] a support plate;

[0007] a battery assembly arranged on the plate surface of the support plate, the battery assembly comprising multiple battery modules stacked along a height direction of the battery pack, each battery module comprising two end plates distributed along a first direction and a battery cell arranged between the two end plates, the height direction and the first direction forming an angle;

[0008] a support assembly comprising support structures distributed on both sides of the battery assembly along the first direction, the support structures comprising multiple support pieces arranged along the height direction, and in two adjacent end plates along the height direction, the lower end plate supports the upper end plate through the support pieces;

[0009] wherein the end plate and the lower adjacent support piece or the support plate are fixedly connected by a first connecting piece, and the support piece and the lower adjacent end plate are fixedly connected by a second connecting piece.

[0010] The present application also provides a vehicle. The vehicle comprises the battery pack as described above, and the battery pack comprises:

[0011] a support plate;

[0012] A battery assembly is arranged on the plate surface of the support plate, and the battery assembly comprises a plurality of battery modules arranged in a stacking manner along a height direction of the battery pack, each battery module comprises two end plates distributed along a first direction, and a plurality of battery cells arranged between the two end plates, and the height direction and the first direction form an angle;

[0013] A support assembly comprises support structures distributed on both sides of the battery assembly along the first direction, and the support structures comprise a plurality of support members arranged along the height direction; in two adjacent end plates along the height direction, the lower end plate supports the upper end plate through the support member;

[0014] The end plate and the lower adjacent support member or the support plate are fixedly connected through a first connecting member, and the support member and the lower adjacent end plate are fixedly connected through a second connecting member. Advantages

[0015] The battery pack provided in the application supports the lower end plate of the two adjacent battery modules along the height direction through the support member, and the end plate and the lower adjacent support member or the support plate are fixedly connected through the first connecting member, and the support member and the lower adjacent end plate are fixedly connected through the second connecting member. During the stacking of the plurality of battery modules, the first connecting member can be used for fixation after the support member supports the end plate of the battery module, and the second connecting member can be used for fixation after the end plate of the battery module supports the support member. Therefore, only the end plate of the battery module and the corresponding support member or support plate need to be aligned, the stacking precision of the battery module is low, and the assembly efficiency of the battery pack is improved.

[0016] The vehicle provided in the application supports the lower end plate of the two adjacent battery modules along the height direction through the support member, and the end plate and the lower adjacent support member or the support plate are fixedly connected through the first connecting member, and the support member and the lower adjacent end plate are fixedly connected through the second connecting member. During the stacking of the plurality of battery modules, the first connecting member can be used for fixation after the support member supports the end plate of the battery module, and the second connecting member can be used for fixation after the end plate of the battery module supports the support member. Therefore, only the end plate of the battery module and the corresponding support member or support plate need to be aligned, the stacking precision of the battery module is low, and the assembly efficiency of the battery pack is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] FIG. 1 is a structural schematic diagram of one embodiment of the battery pack provided in the application;

[0018] FIG. 2 is a cross-sectional view of the battery pack of FIG. 1 along the A-A direction after removing the shell;

[0019] Fig. 3 is an enlarged view of A in Fig. 2;

[0020] Fig. 4 is a structural schematic view of one embodiment of a support provided by an embodiment of the application;

[0021] Fig. 5 is another angle view of the support in Fig. 4;

[0022] Fig. 6 is a structural schematic view of one embodiment of a vehicle provided by an embodiment of the application.

[0023] Legend of reference signs:

[0024] Battery pack 100; battery assembly 110; battery module 111; end plate 1111; connecting part 1112; second mounting hole 1113; fourth mounting hole 1114; support assembly 120; support structure 121; support 1211; first support part 1212; first mounting hole 1213; second support part 1214; third mounting hole 1215; avoiding space 1216; first connecting part 131; second connecting part 132; support plate 140; plate surface 141; fixing part 142; fifth mounting hole 143; shell 150; first direction X; second direction Y; height direction Z; vehicle 200. Embodiments of the application

[0025] Embodiments of the application provide a battery pack and a vehicle.

[0026] Fig. 1 is a structural schematic view of one embodiment of a battery pack provided by an embodiment of the application. Fig. 2 is a sectional view of the battery pack in Fig. 1 along A-A direction after removing the shell. As shown in Fig. 1 and Fig. 2, the battery pack 100 includes a support plate 140, a battery assembly 110 and a support assembly 120, the battery assembly 110 is arranged on one side plate surface 141 of the support plate 140, the battery assembly 110 includes a plurality of battery modules 111 stacked along the height direction Z of the battery pack 100, the support assembly 120 includes support structures 121 distributed on both sides of the battery assembly 110 along the first direction X, and the two support structures 121 of the support assembly 120 are arranged to support the plurality of battery modules 111 of the battery assembly 110.

[0027] The battery module 111 includes two end plates 1111 distributed along the first direction X, and a plurality of battery cells (not shown in the figure) arranged between the two end plates 1111. The height direction Z and the first direction X form an angle. Specifically, the battery module 111 includes a plurality of battery cells, and the plurality of battery cells are stacked between the two end plates 1111 along the first direction X. The two end plates 1111 can be connected by a side plate or a connecting belt, so that the two end plates 1111 clamp the plurality of battery cells. The end plate 1111 of the lowermost battery module 111 is supported on the support plate 140, so that the battery assembly 110 is arranged on the plate surface 141 of the support plate 140.

[0028] As shown in FIGS. 2 and 3, the support structure 121 includes a plurality of support members 1211 arranged along the height direction Z. Among two adjacent end plates 1111 in the height direction Z, the lower end plate 1111 supports the upper end plate 1111 through the support member 1211, so that among two adjacent battery modules 111 of the battery assembly 110, the upper battery module 111 is supported on the lower battery module 111 through the support member 1211. That is, the end plates 1111 on one side of the plurality of battery modules 111 of the battery assembly 110 are alternately supported on the plate surface 141 of the support plate 140 by the plurality of support members 1211 on the same side.

[0029] Therefore, when stacking the plurality of battery modules 111, the two end plates 1111 of the first battery module 111 can be first supported on the plate surface 141 of the support plate 140, then the two support members 1211 are correspondingly supported on the two end plates 1111 of the first battery module 111, then the second battery module 111 is stacked on the first battery module 111, and the two end plates 1111 of the battery module 111 are supported on the two support members 1211. Thereafter, the third, fourth, or even more battery modules 111 can be stacked in the same manner.

[0030] Since the plurality of battery modules 111 are supported by the support structure 121, it is not necessary to provide a separate housing structure for each battery module 111, so that the structure of the plurality of battery modules 111 of the battery pack 100 is more compact, which is beneficial to improve the energy density of the battery pack 100 and reduce the cost of the battery pack 100.

[0031] In the related art, a longer connecting member is passed through the end plates of a plurality of battery modules to fixedly connect the plurality of battery modules together. This way has a higher positioning requirement for the plurality of battery modules. When stacking the plurality of battery modules of the battery pack, the plurality of battery modules of the battery pack need to be accurately positioned at one time, which is inconvenient to operate and affects the assembly efficiency of the battery pack.

[0032] To solve the above problems, in some embodiments, as shown in FIG. 2 and FIG. 3, the battery pack 100 can be provided with the first connecting member 131 and the second connecting member 132, the end plate 1111 and the lower adjacent support member 1211 or support plate 140 are fixedly connected through the first connecting member 131, and the support member 1211 and the lower adjacent end plate 1111 are fixedly connected through the second connecting member 132.

[0033] Therefore, the support member 1211 can be fixedly connected with the upper and lower adjacent end plates 1111 through the first connecting member 131 and the second connecting member 132. During the stacking of the plurality of battery modules 111 of the battery pack 100, after the two support members 1211 are correspondingly supported on the two end plates 1111 of the first battery module 111, the support member 1211 and the lower adjacent end plate 1111 of the first battery module 111 are fixedly connected through the second connecting member 132. Then, the second battery module 111 is stacked on the first battery module 111, and the support member 1211 and the upper adjacent end plate 1111 of the second battery module 111 are fixedly connected through the first connecting member 131. Subsequently, the third, fourth or more battery modules 111 can be stacked in the same manner.

[0034] Compared with the related art in which a long connecting member is used to pass through the end plates of the plurality of stacked battery modules, the battery pack 100 provided by the embodiments of the present application can be fixedly connected through the first connecting member 131 and the second connecting member 132 after the support member 1211 is supported on the end plate 1111 of the battery module 111 and the end plate 1111 of the battery module 111 is supported on the support member 1211 during the stacking of the plurality of battery modules 111. Only the end plate 1111 of the battery module 111 and the corresponding support member 1211 need to be aligned, the stacking precision of the battery module 111 is low, and the assembly efficiency of the battery pack 100 is improved.

[0035] It should be noted that the lower adjacent support member 1211 of the end plate 1111 refers to the end plate 1111 of the two adjacent battery modules 111 in the height direction Z, which is supported on the support member 1211. The lower adjacent end plate 1111 of the support member 1211 refers to the end plate 1111 of the two adjacent battery modules 111 in the height direction Z, which is arranged to support the support member 1211.

[0036] In addition, the height direction Z of the battery pack 100 refers to the distribution direction of the top and bottom of the battery pack 100 after normal use or assembly. The angle formed by the height direction Z of the battery pack 100 and the first direction X can be a right angle or an acute angle, which can be determined according to the structure of the battery pack 100.

[0037] In some embodiments, as shown in FIG. 2 and FIG. 3, the end plate 1111 is provided with a connecting portion 1112 on the side away from the battery cell. The connecting portion 1112 of the end plate 1111 is supported by the lower adjacent support member 1211 or support plate 140, so that the end plate 1111 is supported by the lower adjacent support member 1211 or support plate 140. The support member 1211 is supported by the connecting portion 1112 of the lower adjacent end plate 1111, so that the support member 1211 is supported by the lower adjacent end plate 1111. That is, the connecting portion 1112 of the end plate 1111 on one side of the battery assembly 110 in the first direction X is alternately supported by the support plate 140 on the plate surface 141 with the plurality of support members 1211 on the same side. In the two adjacent end plates 1111 in the height direction Z, the connecting portion 1112 of the lower end plate 1111 supports the connecting portion 1112 of the upper end plate 1111 through the support member 1211.

[0038] By alternately supporting the connecting portion 1112 of the plurality of end plates 1111 and the plurality of support members 1211 on the same side on the plate surface 141 of the support plate 140, the main body portion of the end plate 1111 is less subjected to the pressure applied by the upper battery module 111, which is conducive to reducing the strength requirement of the main body of the end plate 1111, and further reducing the production and processing cost of the end plate 1111.

[0039] In some embodiments, the connecting portion 1112 can extend in the second direction Y, and the height direction Z, the first direction X and the second direction Y are at an angle with each other. In this way, the length of the connecting portion 1112 can be increased, the strength of the connecting portion 1112 is higher, the connecting portion 1112 can more stably support the support member 1211, or the support member 1211 can be more stably supported on the support member 1211.

[0040] Specifically, the connecting portion 1112 can extend in the second direction Y, and the length of the connecting portion 1112 in the second direction Y is substantially the same as the length of the end plate 1111 in the second direction Y, so as to improve the structural strength of the connecting portion 1112 as much as possible. Of course, the connecting portion 1112 can also be divided into a plurality of segments arranged at intervals in the second direction Y, and each segment extends in the second direction Y.

[0041] In some embodiments, the distance from the connecting portion 1112 of the end plate 1111 to the top of the end plate 1111 can be greater than the distance from the connecting portion 1112 to the bottom of the end plate 1111. In this way, the distance from the connecting portion 1112 of the lowermost end plate 1111 to the plate surface 141 of the support plate 140 can be smaller, so as to facilitate the connecting portion 1112 of the lowermost end plate 1111 to be supported on the plate surface 141 of the support plate 140.

[0042] In other embodiments, the distance from the connecting portion 1112 of the end plate 1111 to the top of the end plate 1111 can be equal to the distance from the connecting portion 1112 of the end plate 1111 to the bottom of the end plate 1111, or the distance from the connecting portion 1112 of the end plate 1111 to the top of the end plate 1111 can be greater than the distance from the connecting portion 1112 of the end plate 1111 to the bottom of the end plate 1111, and the same can be achieved that the connecting portion 1112 of the lower end plate 1111 supports the connecting portion 1112 of the upper end plate 1111 through the support 1211.

[0043] In some embodiments, the first connecting member 131 can pass through the connecting portion 1112 of the end plate 1111 along the height direction Z and be inserted into the adjacent support 1211 below the connecting portion 1112 of the end plate 1111 to fixedly connect the end plate 1111 and the adjacent support 1211 below, so that the fixed connection of the support 1211 and the adjacent end plate 1111 above is more convenient.

[0044] Specifically, as shown in FIGS. 3 and 4, the support 1211 is provided with a first mounting hole 1213 extending along the height direction Z, and the connecting portion 1112 of the end plate 1111 is provided with a second mounting hole 1113 penetrating along the height direction Z. After the connecting portion 1112 of the end plate 1111 is supported on the support 1211, the first mounting hole 1213 and the second mounting hole 1113 can be aligned, and then the first connecting member 131 is passed through the second mounting hole 1113 from above the connecting portion 1112 and inserted into the first mounting hole 1213, so that the first connecting member 131 fixedly connects the connecting portion 1112 of the end plate 1111 and the adjacent support 1211 below.

[0045] In this case, the first mounting hole 1213 can penetrate the support 1211 along the height direction Z, or the first mounting hole 1213 can be a blind hole extending downward from the top of the support 1211, and only the first connecting member 131 needs to be inserted into the first mounting hole 1213 and fixedly connected with the support 1211.

[0046] In addition, the first connecting member 131 can include a first locking member, which can be a bolt, a screw, a pin, or any connecting member that can pass through the connecting portion 1112 of the end plate 1111 above the support 1211 and be inserted into the support 1211 to fixedly connect the support 1211 and the end plate 1111 above.

[0047] Similarly, the second connecting member 132 can be inserted through the support member 1211 in the height direction Z and into the connecting portion 1112 of the adjacent end plate 1111 below the support member 1211 to fixedly connect the support member 1211 and the adjacent end plate 1111 below, thereby facilitating the fixed connection of the support member 1211 and the adjacent end plate 1111 below.

[0048] Specifically, as shown in FIGS. 3-5, the support member 1211 is provided with a third mounting hole 1215 extending through in the height direction Z, and the connecting portion 1112 of the end plate 1111 is provided with a fourth mounting hole 1114 extending in the height direction Z. After the support member 1211 is supported on the connecting portion 1112 of the end plate 1111, the third mounting hole 1215 and the fourth mounting hole 1114 can be aligned, and then the second connecting member 132 is inserted through the third mounting hole 1215 from above the support member 1211 and into the fourth mounting hole 1114, so that the second connecting member 132 fixedly connects the support member 1211 and the connecting portion 1112 of the adjacent end plate 1111 below.

[0049] In this embodiment, the fourth mounting hole 1114 can extend through the connecting portion 1112 in the height direction Z, or the fourth mounting hole 1114 can be a blind hole extending downward from the top of the connecting portion 1112, as long as the second connecting member 132 can be inserted into the fourth mounting hole 1114 and fixedly connected with the connecting portion 1112.

[0050] In addition, the second connecting member 132 can include a second locking member, which can be a bolt, a screw, a pin, or any connecting member that can fixedly connect the support member 1211 and the connecting portion 1112 of the adjacent end plate 1111 below after being inserted through the support member 1211 and into the connecting portion 1112 of the adjacent end plate 1111 below.

[0051] It should be noted that in this embodiment, the first connecting member 131 and the second connecting member 132 can be used to fixedly connect the support member 1211 and the connecting portion 1112 of the end plate 1111 according to the above embodiment, or only one of the first connecting member 131 and the second connecting member 132 can be used to fixedly connect the support member 1211 and the connecting portion 1112 of the end plate 1111 according to the above embodiment, while the other or both of the first connecting member 131 and the second connecting member 132 can be used to fixedly connect the support member 1211 and the connecting portion 1112 of the end plate 1111 in other ways. For example, the first connecting member 131 and / or the second connecting member 132 can be inserted through the support member 1211 in the first direction X and into the corresponding end plate 1111 to fixedly connect the support member 1211 and the corresponding end plate 1111.

[0052] As shown in FIGS. 3-5, the support member 1211 includes a first support portion 1212 clamped between the connecting portions 1112 of two adjacent end plates 1111 in the height direction Z. Thus, among the end plates 1111 of two adjacent battery modules 111, the connecting portion 1112 of the lower end plate 1111 supports the connecting portion 1112 of the upper end plate 1111 through the first support portion 1212.

[0053] In some embodiments, the first connecting member 131 can pass through the connecting portion 1112 of the end plate 1111 in the height direction Z and be inserted into the adjacent support member 1211 below the connecting portion 1112 to fixedly connect the connecting portion 1112 of the end plate 1111 and the adjacent first support portion 1212 below. It can be understood that, since the first support portion 1212 of the support member 1211 is clamped between the connecting portions 1112 of two adjacent end plates 1111 in the height direction Z, the first support portion 1212 of the support member 1211 abuts against the bottom of the connecting portion 1112 of the adjacent upper end plate 1111, and the first mounting hole 1213 and the second mounting hole 1113 are continuous. When the first connecting member 131 passes through the connecting portion 1112 of the end plate 1111 in the height direction Z and is inserted into the first support portion 1212 of the support member 1211 adjacent below the end plate 1111, the length of the first connecting member 131 can be set to be relatively short, and after passing through the second mounting hole 1113 of the connecting portion 1112, the first connecting member 131 can be accurately inserted into the first mounting hole 1213.

[0054] In some embodiments, as shown in FIGS. 3 and 5, the first support portion 1212 can be provided with a relief space 1216 on the bottom surface, and the top portion of the first connecting member 131 passing through the connecting portion 1112 adjacent below the first support portion 1212 is accommodated in the relief space 1216. Thus, the portion of the first connecting member 131 extending above the connecting portion 1112 of the corresponding end plate 1111 can be prevented from interfering with the support member 1211 above the connecting portion 1112.

[0055] Specifically, the first mounting hole 1213 of the support member 1211 is provided in the first support portion 1212. The first mounting hole 1213 penetrates the first support portion 1212 in the height direction Z. The relief space 1216 is in communication with the lower end of the first mounting hole 1213. The size of the relief space 1216 is greater than the inner diameter of the first mounting hole 1213, so that the relief space 1216 has sufficient space to accommodate the portion of the first connecting member 131 extending above the connecting portion 1112 of the corresponding end plate 1111.

[0056] As shown in FIGS. 3-5, the support member 1211 includes a second support portion 1214 located between the connecting portions 1112 of two adjacent end plates 1111 in the height direction Z. In some embodiments, the second support portion 1214 can be spaced apart from the connecting portion 1112 of the end plate 1111 above the support member 1211, the second connecting member 132 passes through the second support portion 1214 in the height direction Z and is inserted into the connecting portion 1112 of the end plate 1111 below the support member 1211 to fixedly connect the second support portion 1214 with the connecting portion 1112 below.

[0057] It can be understood that by spacing the second support portion 1214 apart from the connecting portion 1112 of the end plate 1111 above the support member 1211, the height of the second support portion 1214 in the height direction Z can be reduced, which is conducive to shortening the length of the second connecting member 132. Moreover, an accommodation space can be formed between the second support portion 1214 and the connecting portion 1112 of the end plate 1111 above the support member 1211, and the portion of the second connecting member 132 extending above the second support portion 1214 can be accommodated in the accommodation space without interfering with the connecting portion 1112 of the end plate 1111 above the support member 1211.

[0058] It should be noted that the first support portion 1212 and the second support portion 1214 of the support member 1211 in the embodiments of the present application can be simultaneously arranged according to the above embodiments, or only one of the first support portion 1212 and the second support portion 1214 of the support member 1211 can be arranged according to the above embodiments, and the other or all of the first support portion 1212 and the second support portion 1214 can be arranged in other ways. For example, the first support portion 1212 can be spaced apart from the connecting portion 1112 of the end plate 1111 below or above, or the second support portion 1214 can be in abutment with the connecting portion 1112 of the end plate 1111 above.

[0059] In some embodiments, the support member 1211 can extend in the second direction Y, wherein the height direction Z, the first direction X and the second direction Y form an angle with each other. In this way, the length of the support member 1211 can be increased, and the strength of the support member 1211 can be higher, so that the support member 1211 can more stably support the end plate 1111.

[0060] The first connecting piece 131 connected with the same support piece 1211 can be provided in multiple numbers and arranged along the second direction Y. In this way, the support piece 1211 can be fixedly connected with the upper adjacent end plate 1111 through the multiple first connecting pieces 131, which is conducive to improving the connection stability of the support piece 1211 and the upper adjacent end plate 1111. The number of the first connecting pieces 131 connected with the same support piece 1211 can be two, three or more, which is not limited herein.

[0061] In addition, the second connecting piece 132 connected with the same support piece 1211 can be provided in multiple numbers and arranged along the second direction Y. In this way, the support piece 1211 can be fixedly connected with the lower adjacent end plate 1111 through the multiple second connecting pieces 132, which is conducive to improving the connection stability of the support piece 1211 and the lower adjacent end plate 1111. The number of the second connecting pieces 132 connected with the same support piece 1211 can be two, three or more, which is not limited herein.

[0062] It should be noted that the number of the first connecting piece 131 and the second connecting piece 132 connected with the same support piece 1211 can both be multiple, or only one of the first connecting piece 131 and the second connecting piece 132 can be multiple. Of course, the former can further improve the stability of the multiple battery modules 111 stacked.

[0063] In some embodiments, the number of the first support part 1212 and the second support part 1214 of the support piece 1211 can both be multiple and arranged alternately along the second direction Y. The height direction Z, the first direction X and the second direction Y form an angle with each other. In this way, the multiple first support parts 1212 of the support piece 1211 can be fixedly connected with the connecting part 1112 of the upper adjacent end plate 1111 through the first connecting piece 131, and the multiple second support parts 1214 of the support piece 1211 can be fixedly connected with the connecting part 1112 of the lower adjacent end plate 1111 through the second connecting piece 132, thereby further improving the connection stability of the support piece 1211 and the upper adjacent end plate 1111 and the lower adjacent end plate 1111.

[0064] The multiple first support parts 1212 of the support piece 1211 can be connected with the multiple first connecting pieces 131 connected with the support piece 1211 one by one, or one first support part 1212 of the support piece 1211 can be connected with multiple first connecting pieces 131. Similarly, the multiple second support parts 1214 of the support piece 1211 can be connected with the multiple second connecting pieces 132 connected with the support piece 1211 one by one, or one second support part 1214 of the support piece 1211 can be connected with multiple second connecting pieces 132. The specific connection mode can be determined according to the structure of the support piece 1211 and the end plate 1111, which is not described herein again.

[0065] In some embodiments, the plate surface 141 of the support plate 140 can be further provided with a fixing portion 142, and the end plate 1111 of the battery module 111 at the lowermost position is fixedly connected with the fixing portion 142 through the first connecting piece 131, so as to fix the entire battery assembly 110 and the support assembly 120 to the plate surface 141 of the support plate 140.

[0066] The end plate 1111 is provided with a connecting portion 1112 on the side away from the battery cell. The connecting portion 1112 of the end plate 1111 at the lowermost position is supported on the fixing portion 142. The first connecting piece 131 passes through the connecting portion 1112 of the end plate 1111 at the lowermost position along the height direction Z and is inserted into the fixing portion 142, so as to fixedly connect the connecting portion 1112 and the fixing portion 142, thereby making it more convenient to fixedly connect the connecting portion 1112 of the end plate 1111 at the lowermost position and the fixing portion 142.

[0067] Specifically, the fixing portion 142 of the support plate 140 is two in number, and the two fixing portions 142 are arranged along the first direction X to support the connecting portions 1112 of the two end plates 1111 of the battery module 111 at the lowermost position. The fixing portion 142 extends along the second direction Y. The fifth mounting hole 143 extending along the height direction Z is formed on the top of the fixing portion 142. When the connecting portion 1112 of the end plate 1111 at the lowermost position is supported on the fixing portion 142, the fifth mounting hole 143 of the fixing portion 142 can be aligned with the second mounting hole 1113 of the corresponding connecting portion 1112, and then the first connecting piece 131 passes through the second mounting hole 1113 from above the corresponding connecting portion 1112 and is inserted into the fifth mounting hole 143, so as to fixedly connect the connecting portion 1112 of the end plate 1111 at the lowermost position and the fixing portion 142.

[0068] The first connecting piece 131 can be a bolt, a screw, a pin, or any connecting piece that can pass through the connecting portion 1112 of the end plate 1111 at the lowermost position and be inserted into the fixing portion 142 to fixedly connect the connecting portion 1112 of the end plate 1111 at the lowermost position and the fixing portion 142 of the support plate 140.

[0069] In some embodiments, as shown in FIGS. 1 and 2, the battery pack 100 further comprises an outer shell 150, which is arranged on the plate surface 141 of the support plate 140, so that the outer shell 150 and the support plate 140 form a space for accommodating the battery assembly 110 and the support assembly 120.

[0070] The embodiments of the present application also provide a vehicle. As shown in FIG. 6, the vehicle 200 comprises the battery pack 100, the specific structure of which is referred to the above embodiments. Since the vehicle 200 adopts all the technical solutions of the above embodiments, it has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

Claims

1. A battery pack (100), comprising: a support plate (140); a battery assembly (110) provided on a plate surface (141) of the support plate (140); the battery assembly (110) comprises a plurality of battery modules (111) stacked along a height direction (Z) of the battery pack (100), each battery module (111) comprises two end plates (1111) distributed along a first direction (X), and a cell provided between the two end plates (1111), the height direction (Z) and the first direction (X) form an angle; a support assembly (120) comprising support structures (121) distributed on both sides of the battery assembly (110) along the first direction (X), the support structures (121) comprise a plurality of support members (1211) arranged along the height direction (Z); in two adjacent end plates (1111) along the height direction (Z), the lower end plate (1111) supports the upper end plate (1111) through the support member (1211); wherein the end plate (1111) and the lower adjacent support member (1211) or the support plate (140) are fixedly connected by a first connecting member (131), and the support member (1211) and the lower adjacent end plate (1111) are fixedly connected by a second connecting member (132).

2. The battery pack (100) of claim 1, wherein, The side of the end plate (1111) away from the cell is provided with a connecting portion (1112), and the connecting portion (1112) of the end plate (1111) is supported on the lower adjacent support member (1211) or the support plate (140), and the support member (1211) is supported on the connecting portion (1112) of the lower adjacent end plate (1111).

3. The battery pack (100) of claim 2, wherein, The first connecting member (131) passes through the connecting portion (1112) of the end plate (1111) along the height direction (Z) and is inserted into the lower adjacent support member (1211) below the connecting portion (1112) to fixedly connect the end plate (1111) and the lower adjacent support member (1211); and / or, The second connecting member (132) passes through the support member (1211) along the height direction (Z) and is inserted into the connecting portion (1112) of the lower adjacent end plate (1111) below the support member (1211) to fixedly connect the support member (1211) and the lower adjacent end plate (1111).

4. The battery pack (100) of claim 3, wherein, The support piece (1211) comprises a first support part (1212) clamped between the connecting parts (1112) of two adjacent end plates (1111) in the height direction (Z), the first connecting piece (131) passes through the connecting part (1112) of the end plate (1111) in the height direction (Z) and is inserted into the first support part (1212) below the adjacent end plate (1111), so as to fixedly connect the connecting part (1112) and the first support part (1212) below the adjacent end plate (1111); and / or, The support piece (1211) comprises a second support part (1214) spaced from the connecting part (1112) of the end plate (1111) above the support piece (1211), the second connecting piece (132) passes through the second support part (1214) in the height direction (Z) and is inserted into the connecting part (1112) of the end plate (1111) below the support piece (1211), so as to fixedly connect the second support part (1214) and the connecting part (1112) below the adjacent end plate (1111).

5. The battery pack (100) of claim 4, wherein, The number of the first support part (1212) and the second support part (1214) is multiple, and they are alternately distributed in the second direction (Y), and the height direction (Z), the first direction (X) and the second direction (Y) are at an angle with each other.

6. The battery pack (100) of claim 4, wherein, The bottom surface of the first support part (1212) is provided with a avoiding space (1216), and the top of the first connecting piece (131) passing through the connecting part (1112) below the first support part (1212) is accommodated in the avoiding space (1216).

7. The battery pack (100) of claim 4, wherein, The first support part (1212) of the support piece (1211) is connected with the first connecting piece (131) connected to the support piece (1211) one by one.

8. The battery pack (100) of claim 4, wherein, The second support part (1214) of the support piece (1211) is connected with the second connecting piece (132) connected to the support piece (1211) one by one.

9. The battery pack (100) of claim 3, wherein, The support piece (1211) is provided with a first mounting hole (1213) extending in the height direction (Z), and the connecting part (1112) of the end plate (1111) is provided with a second mounting hole (1113) penetrating in the height direction (Z); the first connecting piece (131) passes through the second mounting hole (1113) above the corresponding connecting part (1112) and is inserted into the first mounting hole (1213), so as to fixedly connect the connecting part (1112) of the end plate (1111) and the support piece (1211) below the adjacent end plate (1111).

10. The battery pack (100) of claim 3, wherein, The support piece (1211) is provided with a third mounting hole (1215) penetrating in the height direction (Z), and the connecting part (1112) of the end plate (1111) is provided with a fourth mounting hole (1114) extending in the height direction (Z); the second connecting piece (132) passes through the third mounting hole (1215) from above the corresponding support piece (1211) and is inserted into the fourth mounting hole (1114), so as to fixedly connect the support piece (1211) and the connecting part (1112) of the end plate (1111) below.

11. The battery pack (100) of claim 3, wherein, The first connecting piece (131) comprises a first locking piece; and the second connecting piece (132) comprises a second locking piece.

12. The battery pack (100) of any one of claims 2 to 11, wherein, The distance from the connecting part (1112) to the top of the end plate (1111) is greater than the distance from the connecting part (1112) to the bottom of the end plate (1111); or, The distance from the connecting part (1112) to the top of the end plate (1111) is equal to the distance from the connecting part (1112) to the bottom of the end plate (1111); or, The distance from the connecting part (1112) to the top of the end plate (1111) is less than the distance from the connecting part (1112) to the bottom of the end plate (1111).

13. The battery pack (100) of claim 12, wherein, The connecting part (1112) extends in a second direction (Y), and the height direction (Z), the first direction (X) and the second direction (Y) form an angle with each other.

14. The battery pack (100) of claim 13, wherein, The length of the connecting part (1112) in the second direction (Y) is substantially the same as the length of the end plate (1111) in the second direction (Y).

15. The battery pack (100) of any one of claims 1 to 14, wherein, The support piece (1211) extends in a second direction (Y), and the height direction (Z), the first direction (X) and the second direction (Y) form an angle with each other; The number of the first connecting pieces (131) connected to the same support piece (1211) is multiple, and the first connecting pieces (131) are arranged in the second direction (Y); and / or, The number of the second connecting pieces (132) connected to the same support piece (1211) is multiple, and the second connecting pieces (132) are arranged in the second direction (Y).

16. The battery pack (100) of any one of claims 1 to 14, wherein, The plate surface (141) is further provided with a fixing part (142), and the end plate (1111) of the lowermost battery module (111) is fixedly connected to the fixing part (142) through the first connecting piece (131).

17. The battery pack (100) of claim 16, wherein, The end plate (1111) is provided with a connecting part (1112) on the side away from the battery cell, the connecting part (1112) of the lowermost end plate (1111) is supported on the fixing part (142), and the first connecting piece (131) passes through the connecting part (1112) in the height direction (Z) and is inserted into the fixing part (142), so as to fixedly connect the connecting part (1112) and the fixing part (142).

18. The battery pack (100) of claim 16, wherein, The fixing parts (142) are two in number, and the two fixing parts (142) are arranged along the first direction (X), and the connecting parts (1112) of the two end plates (1111) of the lowermost battery module (111) are supported on the two fixing parts (142).

19. The battery pack (100) of claim 16, wherein, The fixing parts (142) extend along the second direction (Y).

20. A vehicle (200), wherein The vehicle (200) comprises the battery pack (100) according to any one of claims 1 to 19.

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