Support assembly, battery cell assembly, and battery cell module

Abstract

A support assembly (1001), a battery cell assembly (100), and a battery cell module (200). The support assembly (1001) comprises at least one support (10), the support (10) comprises a bottom support plate (11), and the top of the bottom support plate (11) is provided with an accommodating space (101) for accommodating a battery cell (20). When a plurality of supports (10) are provided, the plurality of supports (10) are stacked on each other in the height direction (H), and adjacent supports (10) are detachably connected.

Description

Support assembly, battery cell assembly and battery cell module TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a support assembly, a battery cell assembly and a battery cell module. BACKGROUND

[0002] With the increasing popularity of electric vehicles, a large number of public transport vehicles adopt new energy solutions, and some of the vehicles are low-floor models. The battery arrangement space of such models is small, especially the arrangement in the height space is very limited.

[0003] In the related art, there are batteries that can adjust the height to adapt to different vehicle models, but the structure design is complicated, there are many parts, the energy density is low, the cost is high, the weight is large, and it is not easy to flexibly adjust the size to meet the needs of different vehicle models for the height of the battery.

[0004] SUMMARY

[0005] According to various embodiments of the present application, the present application provides a support assembly, a battery cell assembly and a battery cell module.

[0006] The present application first provides a support assembly, which includes at least one support, the support includes a bottom support plate, the top of the bottom support plate is provided with a containing space for accommodating battery cells; when the support is provided with a plurality of supports, the plurality of supports are stacked along the height direction and the adjacent supports are detachably connected.

[0007] In one embodiment, the support further includes a frame assembly, the frame assembly is detachably connected to the top of the bottom support plate and forms at least one containing space with the bottom support plate.

[0008] In one embodiment, the support assembly has a first direction and a second direction, the first direction, the second direction and the height direction are perpendicular to each other, the frame assembly includes a plurality of partitions arranged side by side and spaced apart along the first direction, and the plurality of partitions are used to form at least one containing space along the first direction with the bottom support plate.

[0009] In one embodiment, the frame assembly further includes a limiting piece, the limiting piece is arranged at the side of the containing space along the second direction and located between two adjacent partitions.

[0010] In one embodiment, the partition is detachably connected to the bottom support plate, and the limiting piece is detachably connected to the bottom support plate and / or the partition.

[0011] In one of the embodiments, the limiting member is detachably connected to the bottom supporting plate, and the separating member is detachably connected to the bottom supporting plate and / or the limiting member.

[0012] In one of the embodiments, the limiting member comprises a body portion and at least one limiting portion, the body portion is arranged on the top of the bottom supporting plate, and the limiting portion is arranged on the top of the body portion, the limiting portion is arranged on the side of the battery cell provided with the tab, and the limiting portion is arranged in the first direction away from the tab.

[0013] In one of the embodiments, the separating member has a crimping end, a crimping gap is arranged on the side of the crimping end close to the bottom supporting plate, and the crimping end is arranged on the side of the limiting member away from the bottom supporting plate along the height direction through the crimping gap, so as to limit the movement of the limiting member relative to the bottom supporting plate along the height direction.

[0014] In one of the embodiments, one of the side of the limiting member close to the bottom supporting plate and the side of the bottom supporting plate close to the limiting member is provided with a clamping groove, and the other is provided with a clamping strip, the clamping strip and the clamping groove can limit the movement of the limiting member relative to the bottom supporting plate along the first direction and / or the second direction.

[0015] In one of the embodiments, the bracket further comprises a positioning member, the positioning member is arranged on the side of the limiting member away from the accommodating space along the second direction, and the positioning member is used for assembling the busbar.

[0016] In one of the embodiments, the bracket further comprises a cooling extension member connected to the side edge of the bottom supporting plate, and the cooling extension member is arranged on the opposite sides of the bottom supporting plate from the limiting member along the second direction.

[0017] The application further provides a battery cell assembly comprising a battery cell and the above-mentioned bracket assembly, and the battery cell is located in the accommodating space of the bracket assembly.

[0018] In one of the embodiments, the battery cell has an expandable direction, the battery cell assembly further comprises a deformable member, and the deformable member is arranged on one side of the battery cell along the expandable direction of the battery cell.

[0019] In one of the embodiments, the expandable direction of the battery cell is parallel to the height direction, each of the accommodating spaces stacks at least two layers of the battery cells along the height direction, and the deformable member is arranged between the adjacent two layers of the battery cells.

[0020] The application further provides a battery cell module comprising an outer housing and the above-mentioned battery cell assembly, and the outer housing at least partially surrounds the battery cell assembly.

[0021] In one of the embodiments, the outer shell comprises a top cover plate mounted on top of the battery cell assembly; and / or, the outer shell comprises an insulation plate mounted on bottom of the battery cell assembly.

[0022] In one of the embodiments, the battery cell module further comprises a side heat exchange plate, the support further comprises a cooling extension connected to the side edge of the bottom support plate; the side heat exchange plate is mounted on the side of the battery cell assembly provided with the cooling extension, and can contact all the cooling extensions of the battery cell assembly.

[0023] In one of the embodiments, the battery cell module further comprises a fixing member, which penetrates the battery cell assembly in the height direction and detachably fixes all the supports of the battery cell assembly.

[0024] The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of the application will be apparent from the description and drawings, and from the claims. BRIEF DESCRIPTION OF DRAWINGS

[0025] To better describe and illustrate embodiments and / or examples of the inventions disclosed herein, reference can be made to one or more drawings. Additional details or examples used to describe the drawings should not be considered limiting to the scope of any of the disclosed inventions, presently described embodiments and / or examples, and the best mode presently contemplated of these inventions.

[0026] Fig. 1 is a structural schematic diagram of a battery cell module in an embodiment of the present application.

[0027] Fig. 2 is an exploded structural schematic diagram of the battery cell module in Fig. 1.

[0028] Fig. 3 is a structural schematic diagram of a battery cell assembly in Fig. 1.

[0029] Fig. 4 is a structural schematic diagram of part of the battery cell assembly in Fig. 3.

[0030] Fig. 5 is an enlarged structural schematic diagram of A in Fig. 4.

[0031] Fig. 6 is an exploded structural schematic diagram of part of the battery cell assembly in Fig. 4.

[0032] Fig. 7 is an enlarged structural schematic diagram of B in Fig. 6.

[0033] Fig. 8 is an enlarged structural schematic diagram of C in Fig. 6.

[0034] Fig. 9 is a structural schematic diagram of a partition and a limiting member in Fig. 6.

[0035] Fig. 10 is a structural schematic diagram of a top cover plate in Fig. 1.

[0036] 100, cell assembly; 1001, bracket assembly; 10, bracket; 101, containing space; 102, crimping groove; 11, bottom supporting plate; 111, clamping strip; 112, butt protrusion; 12, frame assembly; 121, partition; 1211, crimping end; 12111, crimping notch; 1212, butt hole; 122, limiting piece; 1220, body part; 1221, limiting part; 1222, step part; 1223, clamping groove; 123, positioning piece; 13, cooling extension piece; 20, cell; 21, tab; 40, deformable piece; 200, cell module; 2001, outer shell; 210, top cover plate; 2101, metal heat dissipation main plate; 2102, insulation part; 220, side heat exchange plate; 230, insulation plate; 240, side sealing plate; 250, busbar; 260, fixing piece. DETAILED DESCRIPTION

[0037] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific embodiments described herein and by one of ordinary skill in the art without departing from the spirit and scope of the present application, and it is therefore intended that all such variations be considered as falling within the scope of the present application. It should be noted that the following detailed description is intended only to be illustrative and not restrictive of the present application.

[0038] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0039] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0040] In this application, unless otherwise expressly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be broadly understood, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise expressly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0041] In this application, unless otherwise expressly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0042] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on another element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only embodiment.

[0043] With the increasing popularity of electric vehicles, a large number of public transport vehicles adopt new energy solutions, some of which are low-floor models. The battery arrangement space of such models is small, especially the arrangement of height space is very limited.

[0044] In the related art, there are batteries that can adjust the height to adapt to different vehicle models, but the structure design is complicated, there are many parts, the energy density is low, the cost is high, the weight is large, and it is not easy to flexibly adjust the size to meet the needs of different vehicle models for battery height and battery energy density.

[0045] Based on this, referring to FIGS. 1-10, the application provides a support assembly 1001, a cell assembly 100, and a cell module 200. The application first provides a support assembly 1001, which includes at least one support 10. The support 10 includes a bottom support plate 11, and the top of the bottom support plate 11 is provided with a containing space 101 for accommodating a cell 20. When the support 10 is provided with multiple supports, the multiple supports 10 are stacked along the height direction H and are detachably connected between adjacent supports 10.

[0046] In this way, the adjacent supports 10 along the height direction H are detachably connected, and different numbers of supports 10 can be assembled along the height direction H according to requirements, so as to adjust the overall height of the support assembly 1001, thereby facilitating flexible adjustment of the height of the cell assembly 100 and the finished product battery, so as to meet the requirements of different vehicle models on the height of the battery. Moreover, the support 10 does not include a top plate member, and after the adjacent supports 10 are assembled along the height direction H, the cell 20 can be clamped and fixed by the bottom support plate 11 of the support 10 and the bottom support plate 11 of the adjacent support 10 above, thereby reasonably saving the top plate member, reducing the number of parts, reducing the overall weight and cost, facilitating closer arrangement of the cells 20, and effectively improving the energy density of the battery under the same height space.

[0047] In an embodiment, the support 10 further includes a frame assembly 12, which is detachably connected to the top of the bottom support plate 11 and forms at least one containing space 101 together with the bottom support plate 11.

[0048] In this way, when the user wants to disassemble and reassemble the finished product battery, the bottom support plate 11 and the detachable frame assembly 12 can be reused, which facilitates assembly and effectively reduces costs and saves resources.

[0049] Referring to FIGS. 4-9, as an embodiment, the support assembly 1001 has a height direction (i.e., the height direction H shown in the figure), a first direction (i.e., the first direction X shown in the figure), and a second direction (i.e., the second direction Y shown in the figure). The first direction X, the second direction Y, and the height direction H are perpendicular to each other in pairs. The frame assembly 12 includes a plurality of partition members 121 arranged side by side and spaced apart along the first direction X. The bottom support plate 11 is provided with one partition member 121 at each of the two opposite ends along the first direction X. The plurality of partition members 121 are used to form at least one containing space 101 together with the bottom support plate 11 along the first direction X.

[0050] In this way, the area of the bottom support plate 11 can be fully and reasonably utilized to form a plurality of mutually separated and independent containing spaces 101 for more secure arrangement and installation of the cells 20. When the subsequent use requirements change, the user can replace the size of the bottom support plate 11 and use the required number of partition members 121 to flexibly adjust the number of containing spaces 101, thereby meeting different use requirements.

[0051] Referring to FIG. 6, the partition 121 is detachably connected to the bottom plate 11. Exemplarily, in the present embodiment, the partition 121 is provided with a butt joint hole 1212, and the bottom plate 11 is provided with a butt joint protrusion 112, and the partition 121 is detachably connected to the bottom plate 11 through the butt joint hole 1212 and the butt joint protrusion 112. It can be understood that in other embodiments, the butt joint hole 1212 can also be provided on the bottom plate 11, and the butt joint protrusion 112 can be provided on the side of the partition 121 close to the bottom plate 11. It can be further understood that the butt joint hole 1212 can be a blind hole or a through hole. When the butt joint hole 1212 is provided on the bottom plate 11, the butt joint hole 1212 is preferably a blind hole.

[0052] Referring to FIGS. 3 and 6, in the present embodiment, the bottom plate 11 is a rectangular plate body, and the partition 121 is a long strip-shaped plate body, the thickness direction of the plate body of the bottom plate 11 is parallel to the height direction H, the length direction of the bottom plate 11 is parallel to the first direction X of the support 10, and the width direction of the bottom plate 11 is parallel to the second direction Y of the support 10.

[0053] Specifically, in the present embodiment, the length direction of each partition 121 is parallel to the width direction of the bottom plate 11, and the plurality of partitions 121 are arranged side by side and spaced apart along the length direction of the bottom plate 11 on the bottom plate 11.

[0054] As an implementation manner, along the first direction X, the spacing between the adjacent two partitions 121 is equal. In other words, the size of each accommodation space 101 is the same, and the same specification of battery cells 20 can be installed and placed.

[0055] It can be understood that according to requirements, each accommodation space 101 can place one layer of battery cells 20 or stack multiple layers of battery cells 20 along the height direction H. Exemplarily, in the present embodiment, two layers of battery cells 20 can be stacked in each accommodation space 101. In this way, at least one side of each battery cell 20 along the height direction H can contact the bottom plate 11 or the top cover plate 210 of the battery cell module 200, thereby improving the heat dissipation of the battery cell 20.

[0056] Referring to FIGS. 2 to 4, as an implementation manner, the frame assembly 12 further comprises a limiting piece 122, which is arranged on the side of the accommodation space 101 along the second direction Y and located between the adjacent two partitions 121 along the first direction X. It can be understood that the limiting piece 122 is used to limit the movement of the battery cell 20 relative to the support 10 along the second direction Y.

[0057] As an implementation manner, the limiting piece 122 is detachably connected to the bottom plate 11. It can be understood that in other embodiments, the limiting piece 122 can also be detachably connected to the partition 121. In this way, the number of limiting pieces 122 can also be determined according to requirements, thereby improving the recycling rate.

[0058] In some embodiments, when the limiting member 122 is detachably connected to the bottom supporting plate 11, the partition member 121 can be detachably connected to the bottom supporting plate 11 and / or the limiting member 122; when the partition member 121 is detachably connected to the bottom supporting plate 11, the limiting member 122 can be detachably connected to the bottom supporting plate 11 and / or the partition member 121.

[0059] Specifically, in the present embodiment, the limiting member 122 comprises a body portion 1220 and at least one limiting portion 1221, the body portion 1220 is arranged on the top of the bottom supporting plate 11, and the limiting portion 1221 is arranged on the top of the body portion 1220. The limiting portion 1221 is arranged on the side of the battery cell 20 provided with the tab 21, and the limiting portion 1221 is arranged staggered with the tab 21 in the first direction X. The body portion 1220 is used to connect the bottom supporting plate 11 and / or the partition member 121, and the limiting portion 1221 is used to limit the battery cell 20.

[0060] Specifically, in the present embodiment, the battery cell 20 accommodated by the bracket 10 has two tabs 21 arranged spaced apart in the first direction X on one side in the second direction Y. In the first direction X, both ends and the middle of the body portion 1220 are provided with limiting portions 1221. The limiting portion 1221 in the middle can be clamped between the two tabs 21 of the battery cell 20, and the two limiting portions 1221 at both ends can abut against the edge of the battery cell 20 on the side away from each other. In other words, the three limiting portions 1221 can limit the battery cell 20 at three places to block the movement of the battery cell 20 in the second direction Y towards the direction close to the limiting portion 1221.

[0061] It can be understood that, in other embodiments, the body portion 1220 can also be provided with only one limiting portion 1221 in the middle, and the limiting portion 1221 can be clamped between the two tabs 21 of the battery cell 20 to play a limiting role. Alternatively, the body portion 1220 can also be provided with one limiting portion 1221 at each end, and the two limiting portions 1221 can limit the battery cell 20 from both sides.

[0062] Specifically, the body portion 1220 of the limiting member 122 is a long strip-shaped plate body, and the length direction of each limiting member 122 is parallel to the length direction of the bottom supporting plate 11 and located on the edge of the end of the bottom supporting plate 11 in the second direction Y, which can be respectively engaged with the two adjacent partition members 121. In this way, the bottom supporting plate 11 can form the bottom wall of the accommodation space 101, and the limiting member 122 and the two partition members 121 can form three side walls of the accommodation space 101, so as to improve the limiting and protecting effects on the battery cell 20.

[0063] It should be noted that since the frame assembly 12 is in contact with the tab 21, in order to avoid short circuit, the frame assembly 12 is an insulating member. In order to further reduce the risk of short circuit, the bottom plate 11 corresponding to the side area of the tab 21 can also be sprayed with insulating material or attached with insulating sheet, etc.

[0064] It can be understood that as long as there is no interference with the tab 21, the extension length of the limiting part 1221 along the first direction X can be set according to the needs. For example, the extension length of the limiting part 1221 located in the middle part of the body part 1220 along the first direction X can be adjusted under the premise of being less than or equal to the interval between the two tabs 21.

[0065] As an embodiment, in order to reduce the number of fixing members such as screws and simplify the installation and fixation of the limiting member 122, referring to FIGS. 6-9, in the present embodiment, the partition piece 121 has a crimping end 1211, the crimping end 1211 is provided with a crimping notch 12111 on the side close to the bottom plate 11, and the crimping end 1211 can be pressed on the side of the limiting member 122 away from the bottom plate 11 along the height direction H through the crimping notch 12111 to limit the movement of the limiting member 122 relative to the bottom plate 11 along the height direction H. In this way, the limiting member 122 at the crimping position can be pressed on the bottom plate 11 by the partition piece 121, thereby reducing the use of fixing members such as screws.

[0066] As an embodiment, referring to FIGS. 6, 8 and 9, one of the side of the limiting member 122 close to the bottom plate 11 and the side of the bottom plate 11 close to the limiting member 122 is provided with a clamping groove 1223, and the other is provided with a clamping strip 111, and the clamping strip 111 and the clamping groove 1223 can cooperate to limit the movement of the limiting member 122 relative to the bottom plate 11 along the first direction X and / or the second direction Y.

[0067] In this way, the crimping end 1211 of the partition piece 121 can limit the movement of the limiting member 122 along the height direction H, and the clamping groove 1223 and the clamping strip 111 can cooperate to limit the movement of the limiting member 122 along the first direction X and / or the second direction Y. Without additional use of fixing members, the limiting member 122 can still be effectively limited, so that the limiting member 122 will not move on the bottom plate 11, and the position of the limiting member 122 can be reliably guaranteed to limit the position of the battery cell 20.

[0068] Exemplarily, referring to FIGS. 6-9, the clamping groove 1223 and the clamping strip 111 are both long strips, and the extension directions of the two are parallel to the first direction X. Therefore, after the clamping groove 1223 and the clamping strip 111 are clamped with each other, the movement of the limiting member 122 along the second direction Y on the bottom plate 11 can be limited.

[0069] It can be understood that in other embodiments, when the card slot 1223 and the card strip 111 are both long strips, and the extension directions of the two are parallel to the second direction Y, then after the card slot 1223 and the card strip 111 are mutually clamped, the movement of the limiting piece 122 on the bottom support plate 11 in the first direction X can be limited.

[0070] In addition, when the card slot 1223 and the card strip 111 are both long strips, the extension directions of the two can also have an included angle with the first direction X and the second direction Y, so that after the card slot 1223 and the card strip 111 are mutually clamped, the movement of the limiting piece 122 on the bottom support plate 11 in the first direction X can be limited, and the movement of the limiting piece 122 on the bottom support plate 11 in the second direction Y can also be limited.

[0071] Of course, in other embodiments, as long as it does not affect the limiting effect of the limiting piece 122 after the card slot 1223 and the card strip 111 are mutually clamped, the shapes of the card slot 1223 and the card strip 111 include but are not limited to "L" shape, "O" shape, "I" shape, etc.

[0072] Exemplarily, in the present embodiment, the body part 1220 of the limiting piece 122 is provided with a card slot 1223 extending in the first direction X relative to the side close to the bottom support plate 11, and the corresponding plate surface of the bottom support plate 11 is provided with a card strip 111.

[0073] As an implementation, in the height direction H, the crimping end 1211 can simultaneously crimp the end portions of the two adjacent limiting pieces 122 through the crimping notch 12111. In this way, the structure for fixing the limiting piece 122 can be further simplified, and the number of the partition pieces 121 can be saved.

[0074] Specifically, the end portion of the limiting piece 122 in the first direction X is provided with a step part 1222 with a top surface lower than the limiting part 1221, and the step parts 1222 on the mutually close sides of the two adjacent limiting pieces 122 can be combined to form a crimping groove 102 with the limiting part 1221, and the crimping end 1211 of the partition piece 121 can be clamped in the crimping groove 102. Further, the crimping end 1211 of one partition piece 121 can simultaneously crimp the two adjacent limiting pieces 122.

[0075] Referring to FIGS. 2, 4 and 5, as an implementation, in one of the embodiments, the frame assembly 12 further comprises a positioning piece 123, which is arranged on the side of the limiting piece 122 away from the accommodating space 101 in the second direction Y. The positioning piece 123 is used to assemble the bus bar 250.

[0076] It can be understood that the positioning piece 123 can be part of the limiting piece 122 and be integrally formed with the limiting piece 122. The positioning piece 123 can also be independent of the limiting piece 122 and be separately formed with the limiting piece 122 and then mounted on the limiting piece 122.

[0077] In one embodiment, the positioning member 123 is configured as a protrusion for plugging with the busbar 250.

[0078] Referring to FIG. 3, FIG. 4 and FIG. 6, as an implementation, the bracket assembly 1001 further comprises a cooling extension 13 connected to the side edges of the bottom plate 11, and the cooling extension 13 is arranged on the opposite side of the bottom plate 11 from the limiting member 122 along the second direction Y. That is, in this embodiment, the cooling extension 13 is arranged on the opposite side of the bottom plate 11 from the limiting member 122.

[0079] It can be understood that the cooling extension 13 is arranged on the opposite side of the bottom plate 11 from the limiting member 122, so that the cooling extension 13 can form a fourth side wall of the accommodation space 101, so that the accommodation space 101 is a containing groove with an upper opening. In this way, the installation stability of the battery cell 20 can be further ensured, and the battery cell 20 can be better cooled. At the same time, the cooling extension 13 is arranged opposite the limiting member 122, which can avoid the problem of short circuit caused by the contact between the tab 21 and the cooling extension 13.

[0080] It should be noted that the cooling extension 13 is protruded relative to the surface of the bottom plate 11 along the height direction H and extends along the length direction of the bottom plate 11. The cooling extension 13 is in a strip shape.

[0081] In this embodiment, the bottom plate 11 and the cooling extension 13 are both metal members that can conduct heat. The battery cell assembly 100 can exchange heat with external components through the bottom plate 11 and the cooling extension 13, thereby improving the heat dissipation effect.

[0082] As an implementation, it can be understood that the cooling extension 13 can be integrally formed with the bottom plate 11, or the cooling extension 13 can be separately formed with the bottom plate 11 and then fixedly connected.

[0083] As an implementation, the bracket 10 has a plurality of accommodation spaces 101 arranged along the first direction X. In other words, the bottom plate 11 has only one column of accommodation spaces 101 arranged along the first direction X. In this way, all the battery cells 20 on the bottom plate 11 can contact the cooling extension 13, thereby ensuring that all the battery cells 20 are cooled.

[0084] Referring to FIG. 1 to FIG. 4, the present application further provides a battery cell assembly 100, which comprises a battery cell 20 and the above-mentioned bracket assembly 1001, and the battery cell 20 is located in the accommodation space 101 of the bracket assembly.

[0085] The battery cell assembly 100 provided in the application can assemble the required number of supports 10 in the height direction H according to the height space requirement. After the adjacent supports 10 are assembled in the height direction H, the battery cell 20 can be installed on the bottom supporting plate 11 and clamped and fixed by the bottom supporting plate 11 of the adjacent support 10 with a higher position. The top plate structure is reasonably optimized, the number of the layer plates used for fixing the battery cell 20 is reduced, the cost is reduced, the weight is reduced, the arrangement of the battery cell 20 can be more compact, and the energy density of the battery cell assembly is improved.

[0086] Referring to FIGS. 2 and 3, as an embodiment, the thickness direction (the thickness direction D shown in the figure) of the battery cell 20 is parallel to the height direction H, and the length direction and the width direction of the battery cell 20 are perpendicular to the height direction H. The length of the battery cell 20 is defined as L1, the width of the battery cell 20 is defined as W1, and the thickness of the battery cell 20 is defined as D1. The length L1 of the battery cell 20, the width W1 of the battery cell 20, and the thickness D1 of the battery cell 20 satisfy the relationship D1≤L1, D1≤W1. In this way, the size of the battery cell assembly 100 in the height direction H can be thinner, which is more conducive to flexibly adjusting the height of the final product battery.

[0087] Referring to FIGS. 2 and 3, as an embodiment, the battery cell 20 has an expandable direction, and the battery cell assembly 100 further comprises a deformable member 40. The deformable member 40 is arranged on one side of the battery cell 20 along the expandable direction of the battery cell 20. The deformable member 40 can be in contact with the battery cell 20. The deformable member 40 is used to absorb the deformation stress generated by the expansion of the battery cell 20, which can reduce the influence of the expansion of the battery cell 20 on the battery. Exemplarily, the deformable member 40 includes but is not limited to a foam configured.

[0088] Specifically, the expandable direction of the battery cell 20 is parallel to the height direction H. As an embodiment, in the present embodiment, at least two layers of battery cells 20 are stacked along the height direction H in each accommodating space 101, and a deformable member 40 is arranged between the two adjacent layers of battery cells 20. In this way, the number of deformable members 40 can be minimized, and each battery cell 20 can be in contact with the deformable member 40, which is conducive to reducing the height of the battery cell assembly 100 and improving the energy density.

[0089] As an embodiment, each battery cell 20 of the battery cell assembly 100 provided in the application has two tabs 21, and the two tabs 21 are arranged at intervals and located on the same side of the battery cell 20 in the second direction Y. In this way, the cooling extension member 13 can be closely attached to the side of the battery cell 20 where the tab 21 is not arranged, avoiding the interference of the cooling extension member 13 with the connection of the tab 21 and the busbar 250 and the like, and avoiding the risk of short circuit caused by the contact of the tab 21 with the cooling extension member 13.

[0090] Referring to FIGS. 1 and 2, the application further provides a battery cell module 200 comprising the battery cell assembly 100 described above.

[0091] In one embodiment, the battery cell module 200 comprises the outer housing 2001 and the battery cell assembly 100 as described above, and the outer housing 2001 at least partially encloses the battery cell assembly 100.

[0092] As an implementation, the outer housing 2001 comprises a top cover plate 210 mounted on the top of the battery cell assembly 100.

[0093] As an implementation, the outer housing 2001 further comprises an insulation plate 230 mounted on the bottom of the battery cell assembly 100.

[0094] As an implementation, the battery cell module 200 further comprises a side heat exchange plate 220, and the support 10 further comprises a cooling extension 13 connected to the side edge of the bottom support plate 11; the side heat exchange plate 220 is mounted on the side of the battery cell assembly 100 where the cooling extension 13 is arranged, and can be in contact with all the cooling extensions 13 of the battery cell assembly 100. In this way, the battery cell 20 can be fully heat exchanged with the outside through the cooling extension 13 and the side heat exchange plate 220, and the heat dissipation effect is improved.

[0095] As an implementation, the outer housing 2001 further comprises a side sealing plate 240, and the side sealing plate 240 and the cooling extension 13 are arranged on opposite sides of the battery cell assembly 100, that is, the side sealing plate 240 is located on the side of the battery cell 20 where the tab 21 is arranged. The side sealing plate 240 is an insulating member.

[0096] It can be understood that the top cover plate 210, the insulation plate 230, the side sealing plate 240 and the side heat exchange plate 220 respectively surround four sides of the battery cell assembly 100 to protect the battery cell assembly 100.

[0097] Referring to FIGS. 2, 3 and 10, in one embodiment, the top cover plate 210 comprises a metal heat dissipation main plate 2101 and an insulating part 2102 arranged at the metal heat dissipation main plate 2101 close to the tab 21 of the battery cell 20. As an implementation, the metal heat dissipation main plate 2101 is in contact with the side heat exchange plate 220 to improve the heat exchange effect.

[0098] As an implementation, the battery cell module 200 further comprises at least one busbar 250, and the busbar 250 is provided with a slot capable of being inserted with the positioning member 123 of the battery cell assembly 100, so that the busbar 250 is assembled to the battery cell assembly 100.

[0099] As an implementation, the battery cell module 200 further comprises a fixing member 260 capable of penetrating and detachably fixing two adjacent supports 10 or a plurality of supports 10 stacked in sequence along the height direction H.

[0100] Exemplarily, in the embodiment, the support 10 is provided with fixing holes (not labeled), and the fixing member 260 includes a bolt and a nut (not shown). The supports 10 adjacent in the height direction H can be detachably connected through the fixing member 260 and the fixing holes. As an implementation, the bolt also penetrates the top cover plate 210 and the insulation plate 230, so as to also fix the top cover plate 210 and the insulation plate 230.

[0101] The technical features of the above-described embodiments can be combined in any manner. For the sake of brevity, not all possible combinations of the technical features in the above-described embodiments are described, however, as long as the combinations of the technical features do not contradict each other, they should be considered to be within the scope of the present disclosure.

[0102] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be pointed out that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A support assembly, characterized in that, It includes at least one bracket, the bracket including a base plate, the top of the base plate having a receiving space for accommodating the battery cell; when multiple brackets are provided, the multiple brackets are stacked on top of each other along the height direction and adjacent brackets are detachably connected.

2. The support assembly according to claim 1, wherein, The bracket also includes a frame assembly that is detachably connected to the top of the base plate and encloses the base plate to form at least one of the receiving spaces.

3. The support assembly according to claim 2, wherein, The bracket assembly has a first direction and a second direction, the first direction, the second direction, and the height direction are perpendicular to each other, and the frame assembly includes a plurality of partitions arranged side by side and spaced apart along the first direction, the plurality of partitions being used to cooperate with the base plate along the first direction to form at least one of the receiving spaces.

4. The support assembly according to claim 3, wherein, The frame assembly further includes a limiting member disposed along the second direction on the side of the receiving space and located between two adjacent separators.

5. The support assembly according to claim 4, wherein, The separator is detachably connected to the base plate, and the limiting member is detachably connected to the base plate and / or the separator.

6. The support assembly according to claim 4, wherein, The limiting member is detachably connected to the base plate, and the separator is detachably connected to the base plate and / or the limiting member.

7. The support assembly according to claim 4, wherein, The limiting member includes a body portion and at least one limiting portion. The body portion is disposed on the top of the bottom support plate, and the limiting portion is disposed on the top of the body portion. The limiting portion is used to be disposed on the side of the battery cell where the electrode tab is located. The limiting portion and the electrode tab are offset from each other in a first direction.

8. The support assembly according to claim 4, wherein, The separator has a crimping end, and a crimping notch is provided on the side of the crimping end near the bottom support plate. The crimping end is pressed against the side of the limiting member opposite to the bottom support plate along the height direction through the crimping notch, so as to restrict the movement of the limiting member relative to the bottom support plate along the height direction.

9. The support assembly according to claim 4, wherein, The limiting member has a slot on one side near the base plate and the base plate has a strip on the other side. The strip cooperates with the slot to restrict the movement of the limiting member relative to the base plate along the first direction and / or the second direction.

10. The support assembly according to claim 4, wherein, The bracket also includes a positioning element, which is disposed on the side of the limiting member that is relatively far away from the receiving space along the second direction, and the positioning element is used to assemble the busbar.

11. The support assembly according to claim 4, wherein, The bracket also includes a cooling extension connected to the side edge of the base plate, and along the second direction, the cooling extension and the limiting member are respectively disposed on opposite sides of the base plate.

12. A battery cell assembly, characterized in that, It includes a battery cell and a support assembly as described in any one of claims 1-11, wherein the battery cell is located within the receiving space of the support assembly.

13. The cell assembly according to claim 12, wherein, The battery cell has an expandable direction, and the battery cell assembly further includes a deformable element disposed on one side of the battery cell along the expandable direction of the battery cell.

14. The cell assembly according to claim 13, wherein, The expandable direction of the battery cell is parallel to the height direction, and at least two layers of the battery cell are stacked in each of the accommodating spaces along the height direction, with the deformable element sandwiched between two adjacent layers of the battery cell.

15. A battery cell module, characterized in that, It includes a housing and a cell assembly as described in any one of claims 12-14, wherein the housing at least partially surrounds the cell assembly.

16. The cell module according to claim 15, wherein, The housing includes a top cover plate mounted on top of the cell assembly; and / or, the housing includes an insulating plate mounted on the bottom of the cell assembly.

17. The cell module according to claim 15, wherein, The battery cell module also includes a side heat exchange plate, and the bracket also includes a cooling extension, which is connected to the side edge of the base plate; the side heat exchange plate is installed on the side of the battery cell assembly where the cooling extension is provided, and can contact all the cooling extensions of the battery cell assembly.

18. The cell module according to claim 15, wherein, The battery cell module also includes a fixing member that extends along the height direction and detachably fixes all the supports of the battery cell assembly.

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