Battery cell holder and battery pack

Abstract

The application relates to the technical field of battery cell fixing assemblies, and discloses a battery cell support and a battery pack, which comprise a first support body and a total pole piece. The first support body has adjacent first end faces and first side faces, and the edges of the first end faces are provided with first sealing fitting parts. The total pole piece penetrates the part of the first support body close to the first sealing fitting parts, one end of the total pole piece is close to the first side faces, the other end of the total pole piece is close to the first end faces, and the total pole piece and the first support body are combined into an integral structure, so that the problem of low battery pack assembly efficiency is solved or improved.

Description

Technical Field

[0001] This application relates to the field of battery cell fixing components, specifically to battery cell brackets and battery packs. Background Technology

[0002] In related technologies, battery cells (especially cylindrical cells) in battery packs usually need to be fixed by cell brackets to prevent the cells from shifting, shaking, or even falling off during equipment operation due to vibration, collision, or other reasons, thus ensuring the structural stability of the battery system.

[0003] However, the battery pack assembly process requires the separate assembly of the cell support, the positive electrode, the negative electrode, and the sealing components, which is a complicated process with low production efficiency. Utility Model Content

[0004] This application provides a cell support and a battery pack to solve or improve the problem of low battery pack assembly efficiency.

[0005] On one hand, this application provides a battery cell support, including a first support body and a total electrode plate. The first support body has an adjacent first end face and a first side face, and the edge of the first end face has a first sealing mating part. The total electrode plate passes through the portion of the first support body near the first sealing mating part. One end of the total electrode plate is close to the first side face, and the other end of the total electrode plate is close to the first end face. The total electrode plate and the first support body are combined into an integral structure.

[0006] Beneficial effects: By combining the total electrode sheet and the first sealing mating part on the first bracket body, the assembly process of the total electrode sheet and the first sealing mating part with the first bracket body can be reduced, thereby simplifying the battery pack assembly process and improving the battery pack assembly production efficiency.

[0007] In one optional embodiment, the total electrode sheet includes a first bent portion, a second bent portion, and a third bent portion connected in sequence. The first bent portion and the third bent portion are both set at an angle to the second bent portion. The second bent portion is at least partially integrated with the first support body to form an integral structure. The first bent portion is close to the first side surface, and the third bent portion is close to the first end face.

[0008] In one optional embodiment, the first bent portion is provided with a first positioning hole, which cooperates with a positioning post on the first side, and the second bent portion is provided with a second positioning hole, which is used to cooperate with a positioning pin on the production mold.

[0009] In one alternative embodiment, the axis of the second positioning hole is perpendicular to the first end face; and / or, the second positioning hole is polygonal.

[0010] In one alternative embodiment, the third bend is at least partially embedded on the first end face; and / or, the first bend is at least partially embedded on the first side face.

[0011] In one optional embodiment, the device further includes a second support body, which is docked with the first support body to form a cell frame. The cell frame has a plurality of accommodating cavities for accommodating the cell. The second support body has a second end face that coincides with the first end face. The edge of the second end face is provided with a second sealing mating part, and the first sealing mating part and the second sealing mating part are docked to form an annular sealing mating part.

[0012] In one optional embodiment, the annular sealing mating part is an annular groove, the outer annular surface of the annular groove is open, and the wall surface of the annular groove adjacent to the outer annular surface and away from the receiving cavity is open.

[0013] On the other hand, this application also provides a battery pack, including a housing, a cover plate, and a cell support as described in the first aspect; the housing has an opening on one side; the cover plate seals the opening of the housing; the first end face is close to the opening of the housing, the first support body is housed in the housing, and the cover plate is sealed with the first sealing mating part.

[0014] In an optional embodiment, a sealing block is further included. The cover plate includes a connected cover body and an annular plate. The first sealing mating part is groove-shaped, and the portion of the first sealing mating part near the inner wall of the box is open. The portion of the first sealing mating part near the cover plate is also open. The annular plate is inserted into the box body and partially inserted into the first sealing mating part. The portion of the annular plate at least away from the cover body is spaced apart from the inner wall of the box body. A portion of the sealing block is located within the first sealing mating part, and a portion of the sealing block is located between the annular plate and the box body.

[0015] In one alternative embodiment, the distance between the annular ring plate and the inner wall of the box gradually decreases in the direction close to the cover body. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this application, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a battery cell support according to an embodiment of this application;

[0018] Figure 2 This is a right view of a battery cell support according to an embodiment of this application;

[0019] Figure 3 This is a schematic diagram of the overall electrode structure in a battery cell support according to an embodiment of this application;

[0020] Figure 4 This is a schematic diagram of another battery cell support structure according to an embodiment of this application;

[0021] Figure 5 This is a schematic diagram of the structure of the second support body in a battery cell support according to an embodiment of this application;

[0022] Figure 6 This is a schematic diagram of the structure of a battery pack according to an embodiment of this application;

[0023] Figure 7 This is a schematic diagram of the structure of a cover plate in a battery pack according to an embodiment of this application;

[0024] Figure 8 This is a top view of a cover plate in a battery pack according to an embodiment of this application;

[0025] Figure 9 for Figure 8 Cross-sectional view at point AA.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. First support body; 2. Electrode plate; 3. Second support body; 4. Cell frame; 5. Housing; 6. Cover plate;

[0028] 11. First end face; 12. First side face; 13. First sealing mating part; 14. Positioning post;

[0029] 21. First bend; 211. First positioning hole; 22. Second bend; 221. Second positioning hole; 23. Third bend;

[0030] 31. Second end face; 32. Second sealing mating part; 33. Second side surface;

[0031] 41. Receiving cavity; 42. Annular sealing mating part;

[0032] 61. Cover body; 62. Annular ring plate. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] It should be noted that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "installed," "connected," and "linked" should be interpreted broadly, for example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium; they can be internal connections between two elements. The terms "parallel," "perpendicular," and "equal" include the described situation and situations similar to the described situation, the range of which is within an acceptable deviation range, wherein the acceptable deviation range is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, where an acceptable deviation range for approximate parallelism can be, for example, within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, where an acceptable deviation range for approximate perpendicularity can also be, for example, within 5°. "Equal" includes absolute equality and approximate equality, where an acceptable deviation range for approximate equality can be, for example, a difference between the two equal items being less than or equal to 5% of either one. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] In related technologies, battery cells (especially cylindrical cells) in battery packs usually need to be fixed by cell brackets to prevent the cells from shifting, shaking, or even falling off during equipment operation due to vibration, collision, or other reasons, thus ensuring the structural stability of the battery system.

[0036] However, the battery pack assembly process requires the separate assembly of the cell support, the positive electrode, the negative electrode, and the sealing components, which is a complicated process with low production efficiency.

[0037] Therefore, this application provides a cell support and a battery pack to solve or improve the problem of low battery pack assembly efficiency.

[0038] The following is combined Figures 1 to 9 This describes an embodiment of the present application.

[0039] According to embodiments of this application, in one aspect, a cell support is provided, such as... Figure 1 As shown, it includes a first support body 1 and a total electrode plate 2, and the specific scheme is as follows.

[0040] like Figure 1 As shown, the first bracket body 1 is a plastic part made by plastic injection molding; the first bracket body 1 has an adjacent first end face 11 and a first side face 12, and the edge of the first end face 11 has a first sealing mating part 13; specifically, the first sealing mating part 13 can be a surface with a sealing block, used to seal with other components, and the sealing mating form can be any sealing mating method.

[0041] Specifically, the first bracket body 1 can fix multiple battery cells individually, or it can be combined with other brackets to fix multiple parts.

[0042] like Figure 1 As shown, the total electrode 2 can be either a positive electrode or a negative electrode. The total electrode 2 is a conductive metal part, such as a copper sheet. The total electrode 2 penetrates the part of the first support body 1 near the first sealing mating part 13. One end of the total electrode 2 is close to the first side 12, and the other end of the total electrode 2 is close to the first end face 11. The total electrode 2 and the first support body 1 are combined into an integral structure. Specifically, the total electrode 2 (metal part) is pre-placed in the injection mold as an insert, and forms an integral structure with the first support body 1 (plastic) through the insert injection molding process.

[0043] The overall positive electrode plate is used to connect to the positive terminal of multiple cells connected in series and parallel, and the overall negative electrode plate is used to connect to the negative terminal of multiple cells connected in series and parallel.

[0044] The battery cells fixed by the battery cell bracket can be one or more of the following: cylindrical battery cells, prismatic battery cells, and pouch battery cells.

[0045] It should be noted that the first support body 1 can be combined with at least one of the total positive electrode and the total negative electrode to form an integral structure, that is, the first support body 1 can be combined with the total positive electrode to form an integral structure, or the first support body 1 can be combined with the total negative electrode to form an integral structure, or as... Figure 1 As shown, the first support body 1 can be combined with both the total positive electrode and the total negative electrode to form an integral structure, wherein the total positive electrode and the total negative electrode are arranged alternately.

[0046] It should be noted that the first sealing mating part 13 can be an open ring shape or a complete ring shape; when the first sealing mating part 13 is an open ring shape, it can be combined and docked with other components to form a complete mating part with sealing function; when the first sealing mating part 13 is a complete ring shape, it is itself a complete mating part with sealing function.

[0047] In specific usage, such as Figure 1 , Figures 6 to 9 As shown, taking a lithium battery pack as an example, the lithium battery pack has a box body 5, a cover plate 6, a first support body 1 and multiple cylindrical cells. The first sealing mating part 13 on the first support body 1 is ring-shaped, specifically an annular groove. The cover plate 6 is provided with a sealing part that matches the first sealing mating part 13. Specifically, the cover plate 6 is provided with an annular ring plate 62, and the edge of the annular ring plate 62 is provided with sealing rubber, etc., which is inserted into the first sealing mating part 13 for sealing. The total positive electrode sheet and the total negative electrode sheet are both combined with the first support body 1 to form an integral structure.

[0048] Multiple cylindrical cells are installed on the first bracket body 1, and then the first bracket body 1 is placed inside the box body 5, so that the first end face 11 is close to the opening of the box body 5. Then the charging and discharging connectors provided on the cover plate 6 are connected to the total positive electrode and the total negative electrode. Then the cover plate 6 is installed to seal the opening on the box body 5, and the annular plate 62 is inserted and sealed with the first sealing fit to realize the assembly of the battery pack.

[0049] In this embodiment, such as Figure 1 As shown, by combining the total electrode plate 2 and the first sealing mating part 13 on the first bracket body 1, the assembly process of the total electrode plate 2 and the first sealing mating part 13 with the first bracket body 1 can be reduced, thereby simplifying the battery pack assembly process and improving the battery pack assembly production efficiency.

[0050] In one embodiment, such as Figure 3 As shown, the total electrode 2 includes a first bending portion 21, a second bending portion 22 and a third bending portion 23 connected in sequence. The first bending portion 21 and the third bending portion 23 are both set at an angle to the second bending portion 22. The second bending portion 22 is at least partially combined with the first support body 1 to form an integral structure. The first bending portion 21 is close to the first side 12 and the third bending portion 23 is close to the first end face 11.

[0051] Specifically, the total electrode 2 is a sheet produced by cutting and bending a metal sheet. The total electrode 2 may be provided with connection holes to be directly screwed to the charging and discharging connector by bolts.

[0052] Preferred, such as Figure 1As shown, the third bending portion 23 is at least partially embedded in the first end face 11; the first bending portion 21 is at least partially embedded in the first side face 12, which can enhance the connection strength between the total electrode plate 2 and the first support body 1.

[0053] In this embodiment, such as Figure 3 As shown, the total electrode plate 2 includes a first bent portion 21, a second bent portion 22 and a third bent portion 23 connected in sequence, and the second bent portion 22 is at least partially integrated with the first support body 1 to form an integral structure. Through the bending design, the first sealing mating portion 13 can be avoided.

[0054] In one embodiment, such as Figure 1 As shown, a first positioning hole 211 is provided on the first bent portion 21. The first positioning hole 211 cooperates with the positioning post 14 on the first side surface 12 to realize the connection between the first bent portion 21 and the first side surface 12; as shown Figure 2 and Figure 3 As shown, a second positioning hole 221 is provided on the second bent portion 22. The second positioning hole 221 is used to cooperate with the positioning pin on the production mold. Specifically, as shown... Figure 2 As shown, the axis of the second positioning hole 221 is perpendicular to the first end face 11. The second positioning hole 221 is polygonal, such as triangular, quadrilateral, pentagonal, etc., as long as it can have the function of preventing rotation.

[0055] In the specific production process, the total electrode plate 2 is pre-installed on the mold using the second positioning hole 221, and then injection molding is performed to form a positioning post 14 at the first positioning hole 211.

[0056] In this embodiment, by providing a second positioning hole 221 on the total electrode plate 2, it is easy to combine the total electrode plate 2 and the first support body 1 into an integral structure. The provision of the first positioning hole 211 can enhance the connection strength between the first bent part 21 and the first side 12.

[0057] In one embodiment, such as Figure 4 As shown, the cell support also includes a second support body 3, specifically, as... Figure 5 As shown, the second bracket body 3 is a plastic part. The second bracket body 3 and the first bracket body 1 are connected to form a battery cell frame 4. The battery cell frame 4 is provided with multiple accommodating cavities 41 for accommodating battery cells. Specifically, the first bracket body 1 is provided with a part of the multiple accommodating cavities 41, and the second bracket body 3 is provided with another part of the accommodating cavities 41. After the first bracket body 1 and the second bracket body 3 are connected by bolts, the battery cell frame 4 is formed.

[0058] like Figure 5As shown, the second support body 3 has a second end face 31, which coincides with the first end face 11. The edge of the second end face 31 is provided with a second sealing mating part 32. The first sealing mating part 13 and the second sealing mating part 32 are mated to form an annular sealing mating part 42. That is, the first sealing mating part 13 is an open annular shape, and the second sealing mating part 32 is also an open annular shape.

[0059] It should be noted that the main electrode plate 2 can also be provided on the second support body 3. Specifically, the second support body 3 has an adjacent second end face 31 and a second side face 33. The edge of the second end face 31 has a second sealing mating part 32. Specifically, the second sealing mating part 32 can be a surface with a sealing block, used for sealing mating with other components. The sealing mating form can be any sealing mating method.

[0060] The total electrode plate 2 penetrates the part of the second support body 3 near the second sealing mating part 32. One end of the total electrode plate 2 is close to the second side surface 33, and the other end of the total electrode plate 2 is close to the second end face 31. The total electrode plate 2 and the second support body 3 are combined into an integral structure.

[0061] In practical use, multiple cylindrical cells can be installed on the first bracket body 1 first, and then the second bracket body 3 can be connected to the first bracket body 1 and fixed with bolts. Then the whole assembly can be assembled into the battery pack box 5.

[0062] In this embodiment, such as Figure 4 and Figure 5 As shown, a battery frame is formed by docking the first bracket body 1 and the second bracket body 3. The structure is simple, easy to assemble, and has a good fixing effect on the battery cells.

[0063] In one embodiment, such as Figure 4 As shown, the annular sealing mating part 42 is an annular groove, the outer annular surface of the annular groove is open, and the wall surface of the annular groove that is adjacent to the outer annular surface and far away from the receiving cavity 41 is also open.

[0064] In actual use, after the battery cell frame 4 and the battery cell are assembled and installed into the box 5, the annular groove is open on the outer ring surface and the wall surface of the annular groove that is adjacent to the outer ring surface and away from the accommodating cavity 41 is also open. Thus, the annular groove is combined with the inner wall surface of the box 5 to accommodate the sealant and to form a sealed connection with the cover plate 6.

[0065] In this embodiment, such as Figure 4As shown, the annular sealing mating part 42 is an annular groove. The outer ring surface of the annular groove is open, and the wall surface of the annular groove adjacent to the outer ring surface and far away from the receiving cavity 41 is also open. This allows the annular sealing mating part 42 to combine with the inner wall surface of the box body 5 to receive sealant, etc., which can simplify the structure of the box body 5.

[0066] According to embodiments of this application, in a second aspect, a battery pack is provided, such as... Figures 6 to 9 As shown, it includes a housing 5, a cover plate 6, and a cell support in any one of the embodiments of the first aspect, as detailed below.

[0067] like Figure 6 As shown, the box body 5 can be an aluminum shell or a high-strength plastic box. The box body 5 has an opening on one side. Specifically, the box body 5 is a cuboid and the top of the box body 5 is open.

[0068] like Figure 7 As shown, the cover plate 6 can be an aluminum shell or a high-strength plastic box. The cover plate 6 is equipped with components such as a charging interface and a discharging interface. The cover plate 6 seals the opening of the box body 5. Specifically, the cover plate 6 is connected to the box body 5 by screws.

[0069] like Figure 8 and Figure 9 As shown, the first end face 11 is close to the opening of the box body 5, which facilitates the sealing fit of the cover plate 6. The first bracket body 1 is housed in the box body 5, and the cover plate 6 is sealed with the first sealing fit part 13.

[0070] In this embodiment, since the battery pack includes the cell support in any of the embodiments of the first aspect, it has the same technical effects as the cell support, and will not be described again here.

[0071] In one embodiment, such as Figure 9 As shown, the battery pack also includes a sealing block (not shown in the figure). Specifically, the sealing block is formed by melting and cooling the sealing adhesive. The cover plate 6 includes a cover body 61 and an annular plate 62 connected together. The first sealing mating part 13 is grooved. The portion of the first sealing mating part 13 near the inner wall of the box body 5 is open. The portion of the first sealing mating part 13 near the cover plate 6 is open. The annular plate 62 is inserted into the box body 5 and partially inserted into the first sealing mating part 13.

[0072] The annular plate 62 is spaced apart from the inner wall of the box body 5 at least away from the cover body 61, a portion of the sealing block is located in the first sealing mating part 13, and a portion of the sealing block is located between the annular plate 62 and the box body 5.

[0073] During the specific assembly process of the battery pack, such as Figure 9As shown, after the battery cell and the first bracket body 1 are assembled and installed in the box 5, molten sealant is injected into the space formed between the first sealing mating part 13 and the inner wall surface of the box 5. Then, the cover plate 6 is covered, and the annular ring plate 62 on the cover plate 6 is inserted into the first sealing mating part 13. Since the annular ring plate 62 is spaced apart from the inner wall of the box 5, the molten sealant can enter between the annular ring plate 62 and the inner wall of the box 5 to achieve the sealing between the annular ring plate 62 and the inner wall of the box 5.

[0074] In this embodiment, an annular ring plate 62 is provided on the cover plate 6 to be inserted into the grooved first sealing mating part 13, and the annular ring plate 62 is spaced apart from the inner wall surface of the box body 5 at least away from the cover body 61, so as to achieve a sealed connection between the cover plate 6 and the box body 5.

[0075] In one embodiment, such as Figure 9 As shown, the gap between the annular plate 62 and the inner wall of the box 5 gradually decreases in the direction close to the lid body 61. Specifically, the annular plate 62 is constricted towards the outer side of the inner wall of the box 5 in the direction away from the lid body 61.

[0076] In this embodiment, the interval between the annular plate 62 and the inner wall of the box body 5 gradually decreases in the direction close to the cover body 61. As a result, during the process of inserting the annular plate 62 into the first sealing mating part 13 containing molten sealant, the height of the sealant between the annular plate 62 and the inner wall of the box body 5 can be increased, thereby improving the sealing effect.

[0077] In one embodiment, a battery pack is provided, such as Figures 6 to 9 As shown, it includes a box body 5, a cover plate 6, a sealing block (not shown in the figure), and a battery cell bracket, as detailed in the specific scheme below.

[0078] like Figure 6 As shown, the box body 5 can be an aluminum shell or a high-strength plastic box. The box body 5 has an opening on one side. Specifically, the box body 5 is a cuboid and the top of the box body 5 is open.

[0079] like Figure 7 As shown, the cover plate 6 can be an aluminum shell or a high-strength plastic box. The cover plate 6 is equipped with components such as a charging interface and a discharging interface. The cover plate 6 seals the opening of the box body 5. Specifically, the cover plate 6 is connected to the box body 5 by screws.

[0080] like Figure 8 and Figure 9 As shown, the first end face 11 is close to the opening of the box body 5, which facilitates the sealing fit of the cover plate 6. The first bracket body 1 is housed in the box body 5, and the cover plate 6 is sealed with the first sealing fit part 13.

[0081] like Figure 1As shown, the cell support includes a first support body 1, a second support body 3, and a total electrode plate 2.

[0082] like Figure 1 As shown, the first bracket body 1 is a plastic part made by plastic injection molding; the first bracket body 1 has an adjacent first end face 11 and a first side face 12, and the edge of the first end face 11 has a first sealing mating part 13.

[0083] like Figure 5 As shown, the second bracket body 3 is a plastic part. The second bracket body 3 and the first bracket body 1 are connected to form a battery cell frame 4. The battery cell frame 4 is provided with multiple accommodating cavities 41 for accommodating battery cells. Specifically, the first bracket body 1 is provided with a part of the multiple accommodating cavities 41, and the second bracket body 3 is provided with another part of the accommodating cavities 41. After the first bracket body 1 and the second bracket body 3 are connected by bolts, the battery cell frame 4 is formed.

[0084] like Figure 5 As shown, the second support body 3 has a second end face 31, which coincides with the first end face 11. The edge of the second end face 31 is provided with a second sealing mating part 32. The first sealing mating part 13 and the second sealing mating part 32 are mated to form an annular sealing mating part 42. That is, the first sealing mating part 13 is an open annular shape, and the second sealing mating part 32 is also an open annular shape.

[0085] like Figure 4 As shown, the annular sealing mating part 42 is an annular groove, the outer annular surface of the annular groove is open, and the wall surface of the annular groove that is adjacent to the outer annular surface and far away from the receiving cavity 41 is also open.

[0086] like Figure 1 As shown, the total electrode 2 can be either a positive electrode or a negative electrode. The total electrode 2 is a conductive metal part, such as a copper sheet. The total electrode 2 penetrates the part of the first support body 1 near the first sealing mating part 13. One end of the total electrode 2 is close to the first side 12, and the other end of the total electrode 2 is close to the first end face 11. The total electrode 2 and the first support body 1 are combined into an integral structure. Specifically, the total electrode 2 (metal part) is pre-placed in the injection mold as an insert, and forms an integral structure with the first support body 1 (plastic) through the insert injection molding process.

[0087] The overall positive electrode plate is used to connect to the positive terminal of multiple cells connected in series and parallel, and the overall negative electrode plate is used to connect to the negative terminal of multiple cells connected in series and parallel.

[0088] like Figure 1 As shown, the first support body 1 is combined with the total positive electrode and the total negative electrode to form an integral structure, wherein the total positive electrode and the total negative electrode are arranged alternately.

[0089] More specifically, such as Figure 3 As shown, the total electrode 2 includes a first bending portion 21, a second bending portion 22 and a third bending portion 23 connected in sequence. The first bending portion 21 and the third bending portion 23 are both set at an angle to the second bending portion 22. The second bending portion 22 is at least partially combined with the first support body 1 to form an integral structure. The first bending portion 21 is close to the first side 12 and the third bending portion 23 is close to the first end face 11.

[0090] Specifically, the total electrode 2 is a sheet produced by cutting and bending a metal sheet. The total electrode 2 may be provided with connection holes to be directly screwed to the charging and discharging connector by bolts.

[0091] Preferred, such as Figure 1 As shown, the third bending portion 23 is at least partially embedded in the first end face 11; the first bending portion 21 is at least partially embedded in the first side face 12, which can enhance the connection strength between the total electrode plate 2 and the first support body 1.

[0092] More specifically, such as Figure 1 As shown, a first positioning hole 211 is provided on the first bent portion 21. The first positioning hole 211 cooperates with the positioning post 14 on the first side surface 12 to realize the connection between the first bent portion 21 and the first side surface 12; as shown Figure 2 and Figure 3 As shown, a second positioning hole 221 is provided on the second bent portion 22. The second positioning hole 221 is used to cooperate with the positioning pin on the production mold. Specifically, as shown... Figure 2 As shown, the axis of the second positioning hole 221 is perpendicular to the first end face 11. The second positioning hole 221 is polygonal, such as triangular, quadrilateral, pentagonal, etc., as long as it can have the function of preventing rotation.

[0093] Specifically, the sealing block is formed by melting and cooling the sealing adhesive; the cover plate 6 includes a connected cover body 61 and an annular ring plate 62, the annular ring plate 62 is inserted into the box body 5 and inserted into the annular sealing mating part 42.

[0094] The annular plate 62 is spaced apart from the inner wall of the box body 5 at least away from the cover body 61, a portion of the sealing block is located in the first sealing mating part 13, and a portion of the sealing block is located between the annular plate 62 and the box body 5.

[0095] More specifically, such as Figure 9 As shown, the gap between the annular plate 62 and the inner wall of the box 5 gradually decreases in the direction close to the lid body 61. Specifically, the annular plate 62 is constricted towards the outer side of the inner wall of the box 5 in the direction away from the lid body 61.

[0096] According to an embodiment of this application, in a third aspect, an electrical device is provided, including the battery pack in any of the embodiments of the second aspect.

[0097] Specifically, electrical equipment can include electric bicycles, vehicles, ships, spacecraft, and electric toys, etc. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc.; spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc.; electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. This application's embodiments do not impose special limitations on the aforementioned electrical equipment.

[0098] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and all such modifications and variations fall within the scope defined by the appended claims.

Claims

1. A battery cell support, characterized in that, include: The first support body (1) has an adjacent first end face (11) and a first side face (12), and the edge of the first end face (11) has a first sealing mating part (13); The total electrode plate (2) penetrates the part of the first support body (1) near the first sealing mating part (13). One end of the total electrode plate (2) is close to the first side surface (12), and the other end of the total electrode plate (2) is close to the first end face (11). The total electrode plate (2) and the first support body (1) are combined into an integral structure.

2. The cell support according to claim 1, characterized in that, The total electrode plate (2) includes a first bent portion (21), a second bent portion (22) and a third bent portion (23) connected in sequence. The first bent portion (21) and the third bent portion (23) are both set at an angle to the second bent portion (22). The second bent portion (22) is at least partially combined with the first support body (1) to form an integral structure. The first bent portion (21) is close to the first side surface (12), and the third bent portion (23) is close to the first end face (11).

3. The cell support according to claim 2, characterized in that, The first bending portion (21) is provided with a first positioning hole (211), which cooperates with the positioning pin (14) on the first side (12). The second bending portion (22) is provided with a second positioning hole (221), which is used to cooperate with the positioning pin on the production mold.

4. The cell support according to claim 3, characterized in that, The axis of the second positioning hole (221) is perpendicular to the first end face (11); And / or, the second positioning hole (221) is polygonal.

5. The cell support according to claim 3, characterized in that, The third bend (23) is at least partially embedded in the first end face (11); And / or, the first bend (21) is at least partially embedded in the first side (12).

6. The cell support according to any one of claims 1 to 5, characterized in that, It also includes a second support body (3), which docks with the first support body (1) to form a cell frame (4). The cell frame (4) is provided with a plurality of accommodating cavities (41) for accommodating the cell. The second support body (3) has a second end face (31), which coincides with the first end face (11). The edge of the second end face (31) is provided with a second sealing mating part (32). The first sealing mating part (13) docks with the second sealing mating part (32) to form an annular sealing mating part (42).

7. The cell support according to claim 6, characterized in that, The annular sealing mating part (42) is an annular groove. The outer annular surface of the annular groove is open, and the wall surface of the annular groove that is adjacent to the outer annular surface and far away from the accommodating cavity (41) is open.

8. A battery pack, characterized in that, include: Box body (5), with an opening on one side; A cover plate (6) that covers the opening of the box body (5); The cell support as described in any one of claims 1 to 7, wherein the first end face (11) is close to the opening of the housing (5), the first support body (1) is housed in the housing (5), and the cover plate (6) is sealed to the first sealing part (13).

9. The battery pack according to claim 8, characterized in that, It also includes a sealing block. The cover plate (6) includes a connected cover body (61) and an annular plate (62). The first sealing mating part (13) is grooved. The part of the first sealing mating part (13) near the inner wall of the box body (5) is open. The part of the first sealing mating part (13) near the cover plate (6) is open. The annular plate (62) is inserted into the box body (5) and partially inserted into the first sealing mating part (13). The part of the annular plate (62) at least away from the cover body (61) is spaced apart from the inner wall of the box body (5). A part of the sealing block is located in the first sealing mating part (13). A part of the sealing block is located between the annular plate (62) and the box body (5).

10. The battery pack according to claim 9, characterized in that, The distance between the annular plate (62) and the inner wall of the box (5) gradually decreases in the direction close to the cover body (61).

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