Battery cell assembly

Abstract

The utility model provides a battery cell assembly which comprises a first battery cell module, a second battery cell module and a third battery cell module, the second battery cell module is adjacent to the first battery cell module; the protective shell comprises a surrounding plate and a connecting plate group arranged in the surrounding plate, the connecting plate group divides the interior of the protective shell into a first mounting cavity and a second mounting cavity, the first battery cell module is arranged in the first mounting cavity, the second battery cell module is arranged in the second mounting cavity, and the connecting plate group comprises a first connecting plate and a second connecting plate which are arranged at an interval. According to the technical scheme, the problem of insufficient structural strength of the battery cell assembly in the related technology can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage equipment, and in particular to a battery core assembly. Background Art

[0002] With the continuous improvement of living standards, more and more electric mobility devices are appearing in people's lives, such as electric bicycles, electric motorcycles, etc. These electric mobility devices require a large driving power during use, so for the battery components, two or more battery modules are usually designed in parallel to increase the capacity of the battery components. In the related art, usually multiple battery modules are assembled by connecting them with connectors (such as screws), and then placed in a protective shell with only one cavity, and then the BMS (battery management system) and other structures are installed.

[0003] During long-term use, the battery cell assembly in the related technology will face a more complex use environment. When the battery cell assembly falls or vibrates, the connectors between the battery cell modules are prone to breakage or detachment, which may cause safety hazards to the battery cell assembly. If the battery cell assembly includes multiple battery cell modules arranged in an array, such as a 3*3 battery cell module, the central battery cell module is only connected to its adjacent battery cell modules, and the central battery cell module may be disconnected from the adjacent battery cell modules, which may cause safety hazards to the battery cell assembly. In addition, in this way, the heat dissipation efficiency of the battery cell module located in the center is not high, which makes the heat dissipation efficiency of each battery cell module located in different positions inconsistent, resulting in inconsistent local temperature of the battery cell assembly, which in turn affects the performance of the battery cell assembly.

[0004] Therefore, there exists a problem of insufficient structural strength of battery cell components in the art. Utility Model Content

[0005] The main purpose of the utility model is to provide a battery core assembly to solve the problem of insufficient structural strength of the battery core assembly in the related art.

[0006] In order to achieve the above-mentioned objectives, the utility model provides a battery cell assembly, including: a first battery cell module; a second battery cell module, arranged adjacent to the first battery cell module; a protective shell, including a surrounding plate and a connecting plate group arranged in the surrounding plate, the connecting plate group separates the interior of the protective shell into a first installation cavity and a second installation cavity, the first battery cell module is arranged in the first installation cavity, the second battery cell module is arranged in the second installation cavity, and the connecting plate group includes a first connecting plate and a second connecting plate arranged at intervals.

[0007] Furthermore, the connecting plate group also includes a first reinforcing rib arranged between the first connecting plate and the second connecting plate.

[0008] Furthermore, the protective shell also includes a reinforcing wall arranged on the inner side of the enclosure and spaced apart from the enclosure, and a second reinforcing rib is arranged between the enclosure and the reinforcing wall.

[0009] Furthermore, the first battery cell module includes multiple battery cell bodies, a bracket, a bus and an insulating heat conductive plate, the bracket is arranged at the ends of the multiple battery cell bodies, each battery cell body has a pole ear, the bus electrically connects the pole ears of the multiple battery cell bodies, and the insulating heat conductive plate is arranged on the side of the bus away from the battery body.

[0010] Furthermore, the first battery cell module also includes a metal heat conductive plate arranged on a side of the insulating heat conductive plate away from the battery cell body.

[0011] Furthermore, the bracket includes a bracket body and multiple blocks. The bracket body is penetrated with multiple accommodating cavities. The ends of the multiple battery cell bodies are arranged in the multiple accommodating cavities one by one. The block is arranged on the bracket body and can cooperate with the end stop of the battery cell body.

[0012] Furthermore, a mounting groove is provided on the bracket body, a stop block is provided in the mounting groove, the mounting groove is connected to a plurality of accommodating cavities, a bus bar and an insulating heat conductive plate are provided in the mounting groove; and / or, a limiting rib is provided on a side of the bracket body away from the battery cell body, the limiting rib is located on the outside of the plurality of accommodating cavities, the limiting rib and the metal heat conductive plate are limitedly matched, and the limiting rib is lower than or flush with the surface of the metal heat conductive plate away from the battery cell body.

[0013] Further, the bus includes a main body plate and a first folding plate arranged at the edge of the main body plate, the battery cell assembly also includes a collection plate and an insulating plate, the collection plate is arranged on the circumferential outside of the multiple battery cell bodies, the collection plate is electrically connected to the first folding plate to collect the voltages of the multiple battery cell bodies, and the insulating plate is arranged on the side of the collection plate and the first folding plate away from the battery cell bodies; and / or, the bus includes a main body plate and a second folding plate arranged at the edge of the main body plate, the battery cell assembly also includes an external conductive plate arranged on the side of the bracket, and the external conductive plate is electrically connected to the second folding plate.

[0014] Furthermore, the metal heat conductive plate includes a through hole and a spring sheet arranged at the through hole, the spring sheet includes an elastic arm section and a fixed section, the fixed section is connected between the inner side wall of the through hole and the elastic arm section, and in the direction from the fixed section to the elastic arm section, the elastic arm section extends in a direction away from the battery cell body.

[0015] Furthermore, the structure of the second battery cell module is the same as that of the first battery cell module. The battery cell assembly also includes a connecting plate, which includes a bending section and a first connecting section and a second connecting section arranged at both ends of the bending section. The first connecting section is electrically connected to the bus of the first battery cell module, and the second connecting section is electrically connected to the bus of the second battery cell module.

[0016] Furthermore, the protective shell also includes cover plates covering both ends of the enclosure; and / or, the first connecting plate is arranged close to the first battery cell module relative to the second connecting plate, and a connecting arm is also arranged on the bracket, and the connecting arm is connected to the first connecting plate.

[0017] By applying the technical solution of the utility model, the protective shell provides protection for the first battery cell module and the second battery cell module, wherein the protective shell includes a panel and a connecting plate group arranged in the panel, the first battery cell module and the second battery cell module are arranged on the inner side of the panel, the connecting plate group is arranged between the first battery cell module and the second battery cell module and connected to the panel, compared with the solution in the related art that the first battery cell module and the second battery cell module are connected by screws, in the present application, the panel and the connecting plate group jointly form a protective shell, the first battery cell module and the second battery cell module are respectively arranged in the first installation cavity and the second installation cavity formed by the connecting plate group and the protective shell, and the two are not directly connected, when the battery cell assembly encounters a collision or falls, the screws between the first battery cell module and the second battery cell module will not be easily loosened, thereby causing the structural strength of the battery cell assembly to be insufficient. Specifically, in the present application, the connection plate group is arranged on the inner side of the panel to effectively increase the strength of the protective shell; in addition, the first battery cell module and the second battery cell module can be directly connected to the panel and the connecting plate group, thereby improving the structural strength of the battery cell assembly. Therefore, the technical solution of the present application can effectively solve the problem of insufficient structural strength of battery cell components in the related art. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 A three-dimensional structural schematic diagram of an embodiment of a battery cell assembly according to the utility model is shown;

[0020] Figure 2 Shows Figure 1 A schematic diagram of the three-dimensional structure of a protective shell of a battery cell assembly;

[0021] Figure 3 Shows Figure 1 A schematic diagram of the three-dimensional structure of the battery cell assembly from another angle;

[0022] Figure 4 Shows Figure 1 A schematic diagram of the split structure of the first battery cell module of the battery cell assembly;

[0023] Figure 5 Shows Figure 4 An enlarged schematic diagram of part A of the first battery cell module;

[0024] Figure 6 Shows Figure 4 A schematic diagram of a three-dimensional structure of a bracket of a first battery cell module;

[0025] Figure 7 Shows Figure 4 A schematic diagram of the three-dimensional structure of a cell body, a bracket and a busbar of a first cell module;

[0026] Figure 8 Shows Figure 4 A schematic diagram of the three-dimensional structure of the first bracket and the second bracket of the first battery cell module.

[0027] The above drawings include the following reference numerals:

[0028] 10. First battery cell module; 11. Battery cell body; 111. Ear; 12. Bracket; 121. Bracket body; 122. Stopper; 123. Accommodating cavity; 124. Mounting groove; 125. Limiting rib; 13. Busbar; 131. Main body plate; 132. First folding plate; 133. Second folding plate; 14. Insulating heat conducting plate; 15. Metal heat conducting plate; 151. Through hole; 152. Shrapnel; 1521. Elastic arm section; 1522. Fixed section; 16. Collection plate; 17. Connecting arm; 18. External conductive plate; 191. First stud; 192. Second stud;

[0029] 20. A second battery cell module;

[0030] 30. Protective shell; 31. Enclosure; 32. Connecting plate group; 321. First connecting plate; 322. Second connecting plate; 323. First reinforcing rib; 33. First mounting cavity; 34. Second mounting cavity; 35. Reinforced wall; 36. Second reinforcing rib;

[0031] 40. Connecting piece; 41. Bending section; 42. First connecting section; 43. Second connecting section. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0033] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0034] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0035] like Figures 1 to 3 As shown, the present application provides a battery cell assembly, and an embodiment of the battery cell assembly of the present application includes: a first battery cell module 10, a second battery cell module 20, and a protective shell 30; the second battery cell module 20 is arranged adjacent to the first battery cell module 10; the protective shell 30 includes a surrounding plate 31 and a connecting plate group 32 arranged in the surrounding plate 31, the connecting plate group 32 separates the interior of the protective shell 30 into a first installation cavity 33 and a second installation cavity 34, the first battery cell module 10 is arranged in the first installation cavity 33, the second battery cell module 20 is arranged in the second installation cavity 34, and the connecting plate group 32 includes a first connecting plate 321 and a second connecting plate 322 arranged at intervals.

[0036] By applying the technical solution of this embodiment, the protective shell 30 provides protection for the first battery cell module 10 and the second battery cell module 20, wherein the protective shell 30 includes a panel 31 and a connecting plate group 32 arranged in the panel 31, the first battery cell module 10 and the second battery cell module 20 are arranged on the inner side of the panel 31, the connecting plate group 32 is arranged between the first battery cell module 10 and the second battery cell module 20 and connected to the panel 31, compared with the solution in which the first battery cell module 10 and the second battery cell module 20 are connected by screws in the related art, in this embodiment, the panel 31 and the connecting plate group 32 jointly form the protective shell 30, the first battery cell module 10 and the second battery cell module 20 are respectively arranged in the first installation cavity 33 and the second installation cavity 34 formed by the connecting plate group 32 and the protective shell 30, and there is no direct connection between the two. When the battery cell assembly encounters a collision or falls, the screws between the first battery cell module 10 and the second battery cell module 20 will not be easily loosened, thereby resulting in insufficient structural strength of the battery cell assembly. Specifically, in this embodiment, the connection plate group 32 is provided inside the enclosure 31, which can effectively increase the strength of the protective shell 30; in addition, the first battery cell module 10 and the second battery cell module 20 can be directly connected to the enclosure 31 and the connection plate group 32, thereby improving the structural strength of the battery cell assembly. Therefore, the technical solution of this embodiment can effectively solve the problem of insufficient structural strength of the battery cell assembly in the related art.

[0037] like Figure 1 as well as Figure 3 The connecting plate group 32 includes a first connecting plate 321 and a second connecting plate 322 which are arranged at intervals. The first connecting plate 321 is arranged close to the first battery cell module 10 relative to the second connecting plate 322. Correspondingly, the second connecting plate 322 is arranged close to the second battery cell module 20 relative to the first connecting plate 321. The first battery cell module 10 is connected to the first connecting plate 321, and the second battery cell module 20 is connected to the second connecting plate 322.

[0038] In addition, in this embodiment, the first connecting plate 321 and the second connecting plate 322 are both provided with threaded holes for connecting the first battery module 10 and the second battery module 20 thereto. The first connecting plate 321 and the second connecting plate 322 are arranged at intervals to form a heat dissipation cavity to enhance the heat dissipation capacity of the battery cell assembly. The protective shell 30 is made of metal, specifically, the protective shell 30 is made of aluminum.

[0039] In addition, in an embodiment not shown in the figure, the battery cell assembly may also include multiple battery cell modules, wherein the number of battery cell modules is greater than 2, and correspondingly, the number of connecting plate groups is also greater than 1, and the multiple connecting plate groups separate the interior of the protective shell into multiple installation cavities, and the multiple battery cell modules are arranged in the multiple installation cavities one by one, and the multiple battery cell modules are all connected to the corresponding connecting plate groups.

[0040] like Figures 1 to 3 As shown, the connection plate assembly 32 further includes a first reinforcing rib 323 disposed between the first connection plate 321 and the second connection plate 322. The first reinforcing rib 323 can further improve the structural strength of the battery core assembly.

[0041] like Figures 1 to 3 As shown, the protective shell 30 also includes a reinforcing wall 35 arranged on the inner side of the enclosure 31 and spaced from the enclosure 31, and a second reinforcing rib 36 is arranged between the enclosure 31 and the reinforcing wall 35. The protective shell 30 also includes a cover plate covered at both ends of the enclosure 31. The reinforcing wall 35 and the second reinforcing rib 36 can further improve the structural strength of the battery cell assembly, wherein the reinforcing wall 35 is provided with a threaded hole to connect the first battery cell module 10 and the second battery cell module 20, and the enclosure 31 is provided with a threaded hole to connect the cover plate. In this embodiment, a separate cover plate is provided at both ends of the protective shell 30. In an embodiment not shown in the figure, one of the cover plates can also be provided integrally with the protective shell. Specifically, in this embodiment, the number of reinforcing walls 35 is two, and the enclosure 31 includes four plate bodies, one reinforcing wall 35 is arranged on the inner side of the plate body corresponding to the bracket 12 (mentioned later) of the first battery cell module 10, and accordingly, another reinforcing wall 35 is arranged on the inner side of the plate body corresponding to the bracket of the second battery cell module 20.

[0042] like Figures 4 to 8 As shown, the first battery cell module 10 includes a plurality of battery cell bodies 11, a bracket 12, a bus bar 13 and an insulating heat conductive plate 14. The bracket 12 is arranged at the end of the plurality of battery cell bodies 11. Each battery cell body 11 has a pole ear 111. The bus bar 13 electrically connects the pole ears 111 of the plurality of battery cell bodies 11. The insulating heat conductive plate 14 is arranged on the side of the bus bar 13 away from the battery cell body 11. In this embodiment, the bracket 12 includes a first bracket and a second bracket. The first bracket and the second bracket are respectively arranged at both ends of the plurality of battery cell bodies 11 to fix the plurality of battery cell bodies 11. The first bracket and the second bracket are both provided with a plurality of connecting arms 17 to connect with the first connecting plate 321 and the reinforcing wall 35. The plurality of connecting arms 17 on the first bracket and the second bracket are arranged at different positions. Apart from this, the structures of the first bracket and the second bracket are the same. The insulating heat conductive plate 14 is arranged on the side of the bus 13 away from the battery body 11. When the first battery module 10 is installed in the first installation cavity 33, the insulating heat conductive plate 14 can cooperate with the reinforcing wall 35 and the first connecting plate 321 for heat conduction, so as to transfer the heat generated by the battery body 11 during operation through the bus 13 and the insulating heat conductive plate 14, thereby enhancing the heat dissipation capacity of the battery assembly. Figure 8As shown, in this embodiment, a plurality of first studs 191 are provided on the side of the first bracket facing the battery cell body 11, and a plurality of second studs 192 are provided on the side of the second bracket facing the battery cell body 11. The first studs 191 and the second studs 192 are provided in one-to-one correspondence, and screws are passed through the first studs 191 and the second studs 192 to connect the first bracket and the second bracket.

[0043] like Figure 4 As shown, the first battery cell module 10 further includes a metal heat conductive plate 15 disposed on a side of the insulating heat conductive plate 14 away from the battery cell body 11. One side of the metal heat conductive plate 15 is closely disposed with the insulating heat conductive plate 14, and the other side of the metal heat conductive plate 15 is closely disposed with the reinforcing wall 35 or the first connecting plate 321 to transfer the heat generated by the battery cell body 11 during operation and ensure the structural strength of the first battery cell module 10. Specifically, the metal heat conductive plate 15 is made of aluminum, and the insulating heat conductive plate 14 is made of thermally conductive silicone.

[0044] like Figures 6 to 8 As shown, the bracket 12 includes a bracket body 121 and a plurality of stoppers 122. The bracket body 121 is provided with a plurality of accommodating cavities 123. The ends of the plurality of battery cell bodies 11 are arranged in the plurality of accommodating cavities 123 one by one. The stoppers 122 are arranged on the bracket body 121 and can cooperate with the end stops of the battery cell bodies 11. When the staff loads the battery cell bodies 11 into the bracket 12, the stoppers 122 can cooperate with the end stops of the battery cell bodies 11 to limit the battery cell bodies 11, so as to facilitate the subsequent loading of the busbar 13, the insulating heat conductive plate 14 and the metal heat conductive plate 15. Specifically, for the accommodating cavities 123 in the middle part, a stopper 122 is arranged between the four accommodating cavities 123, and for the accommodating cavities 123 in the edge part, a stopper 122 is arranged between the two accommodating cavities 123. In addition, the busbar 13 and the insulating heat conductive plate 14 are both provided with avoidance openings for avoiding the stoppers 122. In addition, threaded holes are provided on some of the blocks 122 so that the staff can connect the metal heat conducting plate 15 and the bracket 12 with screws.

[0045] like Figure 6 as well as Figure 7 As shown, a mounting groove 124 is provided on the bracket body 121, a stopper 122 is provided in the mounting groove 124, the mounting groove 124 is communicated with a plurality of accommodating cavities 123, and the busbar 13 and the insulating heat conductive plate 14 are provided in the mounting groove 124. The mounting groove 124 enables the side of the insulating heat conductive plate 14 away from the battery cell body 11 to be flush with the side of the bracket body 121 away from the battery cell body 11 after the busbar 13 and the insulating heat conductive plate 14 are installed in the bracket 12, thereby ensuring the flatness of the first battery cell module 10.

[0046] like Figure 6As shown, a limiting rib 125 is provided on one side of the bracket body 121 away from the battery body 11, and the limiting rib 125 is located outside the multiple accommodating cavities 123. The limiting rib 125 and the metal heat conductive plate 15 are limited and matched, and the limiting rib 125 is lower than or flush with the surface of the metal heat conductive plate 15 away from the battery body 11. The limiting rib 125 can limit the metal heat conductive plate 15, and the limiting rib 125 is lower than or flush with the surface of the metal heat conductive plate 15 away from the battery body 11, so that the metal heat conductive plate 15 can be closely arranged with the reinforcing wall 35 or the first connecting plate 321, thereby ensuring the heat dissipation capacity of the battery core assembly.

[0047] like Figure 4 As shown, the busbar 13 includes a main body plate 131 and a first folding plate 132 arranged at the edge of the main body plate 131, and the battery cell assembly also includes a collection plate 16 and an insulating plate. The collection plate 16 is arranged on the circumferential outer side of the plurality of battery cell bodies 11, and the collection plate 16 is electrically connected to the first folding plate 132 to collect the voltage of the plurality of battery cell bodies 11. The insulating plate is arranged on the side of the collection plate 16 and the first folding plate 132 away from the battery cell bodies 11. The collection plate 16 is electrically connected to the first folding plate 132, so that the collection plate 16 can measure the voltage of the plurality of battery cell bodies 11. In addition, the first battery cell module 10 also includes a temperature detector arranged between the plurality of battery cell bodies 11, and the connection line of the temperature detector is electrically connected to the collection plate 16, so that the collection plate 16 can obtain the temperature data of the plurality of battery cell bodies 11 measured by the temperature detector. In addition, the insulating plate is arranged on the side of the collection plate 16 and the first folding plate 132 away from the battery cell bodies 11 to prevent the collection plate 16 and the first folding plate 132 from being electrically connected to the protective shell 30.

[0048] like Figure 4 as well as Figure 7 As shown, the busbar 13 includes a main plate 131 and a second folding plate 133 arranged at the edge of the main plate 131, and the battery cell assembly also includes an external conductive plate 18 arranged on the side of the bracket 12, and the external conductive plate 18 is electrically connected to the second folding plate 133. The external conductive plate 18 can be electrically connected to an external electrical device, so that the battery cell assembly can be electrically connected to the external electrical device.

[0049] like Figure 4 as well as Figure 5As shown, the metal heat conductive plate 15 includes a through hole 151 and a spring piece 152 disposed at the through hole 151. The spring piece 152 includes an elastic arm section 1521 and a fixed section 1522. The fixed section 1522 is connected between the inner wall of the through hole 151 and the elastic arm section 1521. In the direction from the fixed section 1522 to the elastic arm section 1521, the elastic arm section 1521 extends in a direction away from the battery cell body 11. Due to assembly errors, after the first battery cell module 10 is installed in the first installation cavity 33, the metal heat conductive plate 15 may not be closely arranged with the reinforcing wall 35 or the first connecting plate 321. The spring piece 152 protrudes from the side of the metal heat conductive plate 15 away from the battery cell body 11, and can be abutted and matched with the reinforcing wall 35 or the first connecting plate 321, thereby ensuring that the metal heat conductive plate 15 can contact with the reinforcing wall 35 or the first connecting plate 321, thereby ensuring the heat dissipation capacity of the battery cell assembly.

[0050] like Figure 3 As shown, the structure of the second cell module 20 is the same as that of the first cell module 10, and the cell assembly further includes a connecting piece 40, which includes a curved section 41 and a first connecting section 42 and a second connecting section 43 arranged at both ends of the curved section 41. The first connecting section 42 is electrically connected to the bus bar 13 of the first cell module 10, and the second connecting section 43 is electrically connected to the bus bar 13 of the second cell module 20. The connecting piece 40 enables electrical connection between the first cell module 10 and the second cell module 20, and the curved section 41 is located between the first cell module 10 and the second cell module 20. Since the curved section 41 has a certain degree of ductility, when the cell assembly encounters a collision or falls, the curved section 41 can maintain a stable electrical connection between the first cell module 10 and the second cell module 20 without worrying about the connection piece 40 being broken.

[0051] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0052] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0053] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0054] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A battery cell assembly, characterized in that: include: A first battery cell module (10); A second battery cell module (20) is arranged adjacent to the first battery cell module (10); A protective shell (30) comprises a panel (31) and a connecting plate group (32) arranged in the panel (31), wherein the connecting plate group (32) separates the interior of the protective shell (30) into a first installation cavity (33) and a second installation cavity (34), wherein the first battery cell module (10) is arranged in the first installation cavity (33), and the second battery cell module (20) is arranged in the second installation cavity (34), and the connecting plate group (32) comprises a first connecting plate (321) and a second connecting plate (322) arranged at intervals.

2. The battery cell assembly according to claim 1, characterized in that: The connecting plate group (32) further comprises a first reinforcing rib (323) arranged between the first connecting plate (321) and the second connecting plate (322).

3. The battery core assembly according to claim 1, characterized in that: The protective shell (30) further comprises a reinforcing wall (35) arranged on the inner side of the enclosure (31) and spaced apart from the enclosure (31), and a second reinforcing rib (36) is arranged between the enclosure (31) and the reinforcing wall (35).

4. The battery cell assembly according to any one of claims 1 to 3, characterized in that: The first battery cell module (10) comprises a plurality of battery cell bodies (11), a bracket (12), a bus bar (13) and an insulating heat conductive plate (14); the bracket (12) is arranged at the ends of the plurality of battery cell bodies (11); each of the battery cell bodies (11) has a pole ear (111); the bus bar (13) electrically connects the pole ears (111) of the plurality of battery cell bodies (11); and the insulating heat conductive plate (14) is arranged on a side of the bus bar (13) away from the battery cell bodies (11).

5. The battery cell assembly according to claim 4, characterized in that: The first battery cell module (10) further comprises a metal heat conducting plate (15) arranged on a side of the insulating heat conducting plate (14) away from the battery cell body (11).

6. The battery cell assembly according to claim 5, characterized in that: The support (12) comprises a support body (121) and a plurality of stoppers (122); a plurality of accommodating cavities (123) are provided through the support body (121); the ends of the plurality of battery cell bodies (11) are arranged in the plurality of accommodating cavities (123) in a one-to-one correspondence; the stoppers (122) are arranged on the support body (121) and can cooperate with the end stops of the battery cell bodies (11).

7. The battery cell assembly according to claim 6, characterized in that: The bracket body (121) is provided with a mounting groove (124), the stopper (122) is arranged in the mounting groove (124), the mounting groove (124) is communicated with the plurality of accommodating cavities (123), and the busbar (13) and the insulating heat conducting plate (14) are arranged in the mounting groove (124); and / or, A limiting rib (125) is provided on a side of the bracket body (121) away from the battery cell body (11); the limiting rib (125) is located outside the plurality of accommodating cavities (123); the limiting rib (125) and the metal heat conducting plate (15) are limitedly matched; the limiting rib (125) is lower than or flush with a surface of the metal heat conducting plate (15) away from the battery cell body (11).

8. The battery cell assembly according to claim 4, characterized in that: The busbar (13) comprises a main body plate (131) and a first folding plate (132) arranged at the edge of the main body plate (131); the battery cell assembly further comprises a collection plate (16) and an insulating plate; the collection plate (16) is arranged on the circumferential outer side of the plurality of battery cell bodies (11); the collection plate (16) is electrically connected to the first folding plate (132) to collect the voltage of the plurality of battery cell bodies (11); the insulating plate is arranged on a side of the collection plate (16) and the first folding plate (132) away from the battery cell bodies (11); and / or, The busbar (13) comprises a main plate (131) and a second folding plate (133) arranged at the edge of the main plate (131), and the battery cell assembly further comprises an external conductive plate (18) arranged on the side of the bracket (12), and the external conductive plate (18) is electrically connected to the second folding plate (133).

9. The battery core assembly according to claim 5, characterized in that: The metal heat conducting plate (15) comprises a through hole (151) and a spring sheet (152) arranged at the through hole (151); the spring sheet (152) comprises an elastic arm section (1521) and a fixed section (1522); the fixed section (1522) is connected between the inner side wall of the through hole (151) and the elastic arm section (1521); in the direction from the fixed section (1522) to the elastic arm section (1521), the elastic arm section (1521) extends in a direction away from the battery cell body (11).

10. The battery core assembly according to claim 4, characterized in that: The structure of the second battery cell module (20) is the same as that of the first battery cell module (10), and the battery cell assembly further comprises a connecting piece (40), the connecting piece (40) comprising a bending section (41) and a first connecting section (42) and a second connecting section (43) arranged at both ends of the bending section (41), the first connecting section (42) being electrically connected to the bus bar (13) of the first battery cell module (10), and the second connecting section (43) being electrically connected to the bus bar (13) of the second battery cell module (20).

11. The battery core assembly according to claim 4, characterized in that: The protective shell (30) further comprises cover plates arranged at both ends of the enclosure plate (31); and / or, The first connecting plate (321) is arranged relative to the second connecting plate (322) and close to the first battery cell module (10), and a connecting arm (17) is also arranged on the bracket (12), and the connecting arm (17) is connected to the first connecting plate (321).

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