Shell assembly and battery

Abstract

The utility model discloses a shell assembly and a battery, and belongs to the technical field of batteries. The shell assembly comprises a shell, a first plastic part and a buckle, the shell is used for accommodating a battery cell, the battery cell is connected with a tab, the shell comprises a side plate, the tab faces the side plate, and a first through hole is formed in the side plate; the first plastic part is arranged on the inner side of the shell, a second through hole is formed in the first plastic part, the first through hole is communicated with the second through hole, and the pole lug can penetrate through the first through hole and the second through hole to be connected with the pole column; one of the side plate and the first plastic part is integrally connected with the buckle, and the other one is clamped with the buckle. The shell assembly and the battery provided by the utility model are convenient to disassemble and assemble, and the assembly difficulty can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a shell component and a battery. Background Art

[0002] In related technologies, such as Figure 1 As shown, the battery includes a cover assembly 1', a housing, a battery cell, a tab, and a terminal 2'. The cover assembly 1' includes a cover plate 11' and a plastic part 12'. The plastic part 12' is located on the inner side of the cover plate 11' facing the housing. The cover assembly 1' covers the housing. The tab connects the battery cell and the terminal 2'. The battery cell, tab, plastic part 12', and part of the terminal 2' are all located within the housing. The plastic part 12' is used to isolate the battery cell, tab, and terminal 2' from the cover plate 11'. The plastic part 12' and the cover plate 11' are injection molded, making the assembly of the cover assembly 1' more difficult, which in turn increases the difficulty of battery assembly. Utility Model Content

[0003] The purpose of the utility model is to provide a housing assembly and a battery that are easy to disassemble and assemble, and can reduce the difficulty of assembly.

[0004] To achieve this purpose, the present invention adopts the following technical solutions:

[0005] In one aspect, a housing assembly is provided, comprising:

[0006] A housing for accommodating a battery cell, wherein the battery cell is connected to a tab, the housing comprising a side plate, the tab facing the side plate, and a first through hole formed in the side plate;

[0007] A first plastic part, the first plastic part is provided inside the housing, so the first plastic part has a second through hole, the first through hole and the second through hole are connected, and the tab can pass through the first through hole and the second through hole to be connected to the pole;

[0008] A buckle, one of the side panel and the first plastic part is integrally connected to the buckle, and the other is clipped to the buckle.

[0009] In some possible implementations, the first plastic part is in a flat plate shape.

[0010] In some possible implementations, a protrusion is provided on a side of the first plastic part facing the side panel, the second through hole passes through the protrusion, and the protrusion is inserted into the first through hole.

[0011] In some possible implementations, a tab is provided on a side of the battery cell facing the first plastic part, and the number of the first through holes and the number of the second through holes are equal and not less than 1; or

[0012] A positive electrode ear and a negative electrode ear are provided on the side of the battery cell facing the first plastic part. The first through hole includes a first hole portion and a second hole portion, and the second through hole includes a third hole portion and a fourth hole portion. The positive electrode ear passes through the first hole portion and the third hole portion, and the negative electrode ear passes through the second hole portion and the fourth hole portion. The number of the first hole portion and the third hole portion is equal and both are not less than 1, and the number of the second hole portion and the fourth hole portion is equal and both are not less than 1.

[0013] In some possible embodiments, a positive electrode ear and a negative electrode ear are provided on the side of the battery cell facing the first plastic part, the first plastic part is provided with the third hole portion and the fourth hole portion, or two first plastic parts are provided, and the two first plastic parts are respectively provided with the third hole portion and the fourth hole portion.

[0014] In some possible implementations, a positive electrode tab and a negative electrode tab are provided on a side of the battery cell facing the first plastic part, and the first plastic part is provided with the third hole portion and the fourth hole portion;

[0015] The side plate is provided with a mounting hole, an explosion-proof valve 5 is installed on the mounting hole, the first plastic part is provided with a first communicating hole, the first communicating hole is provided between the third hole portion and the fourth hole portion, and the first communicating hole is connected to the mounting hole; and / or

[0016] The side plate is provided with a liquid injection hole, the first plastic part is provided with a second communicating hole, the second communicating hole is provided between the third hole portion and the fourth hole portion, and the second communicating hole is communicated with the liquid injection hole.

[0017] In some possible implementations, the side panel or the first plastic part is provided with a stepped hole, and the buckle includes a hook portion provided at one end, and the hook portion is hooked with a stepped surface of the stepped hole.

[0018] In some possible implementations, there is at least one buckle.

[0019] In some possible implementations, the system further includes a second plastic part disposed outside the housing, the first plastic part and the second plastic part are disposed on both sides of the side panel, and the second plastic part is plugged into the side panel.

[0020] On the other hand, a battery is provided, comprising a battery cell, a pole, a tab and a shell assembly as described above, wherein the battery cell is accommodated in the shell, the tab is connected to the battery cell, the tab passes through a first through hole and a second through hole, and the pole is arranged outside the shell and connected to the tab.

[0021] Beneficial effects of the utility model:

[0022] The present invention provides a housing assembly and battery, wherein a second through-hole defined in a first plastic part and a first through-hole defined in a side panel allow a tab to pass through the connected first and second through-holes. The tab can connect to a pole located outside the housing, allowing the pole and a portion of the tab to be located outside the housing assembly, thereby avoiding occupying the internal space of the housing assembly and improving the internal space utilization of the housing assembly. The first plastic part and the side panel are connected by a snap fastener, facilitating assembly and disassembly, thereby reducing assembly difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a partial cross-sectional view of the cover plate assembly and the pole in the prior art;

[0024] Figure 2 It is an exploded view of a housing assembly provided in a specific embodiment of the present utility model;

[0025] Figure 3 It is a front view of the housing assembly provided by a specific embodiment of the present utility model;

[0026] Figure 4 It is a schematic diagram of the second plastic part provided by a specific embodiment of the present utility model.

[0027] In the picture:

[0028] 1', cover assembly; 2', pole; 11', cover; 12', plastic part;

[0029] 1. Housing; 11. Side panel; 111. Step hole; 112. First through hole; 1121. First hole portion; 1122. Second hole portion; 113. Injection hole; 114. Mounting hole; 115. Jack;

[0030] 2. Second plastic part; 21. Insertion column; 22. Third through hole;

[0031] 3. First plastic part; 31. Second through hole; 311. Third hole portion; 312. Fourth hole portion; 32. Bump;

[0032] 4. Buckle;

[0033] 5. Explosion-proof valve. DETAILED DESCRIPTION

[0034] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved more clearly, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present invention.

[0035] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0036] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0037] like Figure 2-Figure 4 As shown, this embodiment provides a shell assembly, including a shell 1, a first plastic part 3 and a buckle 4. The shell 1 is used to accommodate a battery cell, and the battery cell is connected to a tab. The shell 1 includes a side panel 11, and the tab faces the side panel 11. The side panel 11 is provided with a first through hole 112. The first plastic part 3 is arranged on the inner side of the shell 1, so the first plastic part 3 is provided with a second through hole 31. The first through hole 112 and the second through hole 31 are connected, and the tab can pass through the first through hole 112 and the second through hole 31 to connect with the pole. Of the side panel 11 and the first plastic part 3, one is integrally connected to the buckle 4, and the other is engaged with the buckle 4. Optionally, the buckle 4 is engaged with the engaging hole.

[0038] This embodiment also provides a battery, comprising a cell, a terminal post, a tab, and a housing assembly as described above. The cell is housed in a housing 1, and the tab is connected to the cell. The tab passes through a first through-hole 112 and a second through-hole 31. The terminal post is disposed outside the housing 1 and connected to the tab. The housing assembly further comprises a second plastic part 2 disposed outside the housing 1. The first plastic part 3 and the second plastic part 2 are disposed on either side of a side panel 11. The second plastic part 2 is plugged into the side panel 11, facilitating assembly and disassembly of the second plastic part 2 and the side panel 11, and facilitating connection. For example, the second plastic part 2 is rectangular and has two plugs 21. The side panel 11 has two insertion holes 115, and the two plugs 21 are correspondingly inserted into the two insertion holes 115. A buckle 4 or a latch hole is disposed between the two insertion holes 115. Specifically, the tab passes through the first through-hole 112 and the second through-hole 31, then folds over the second plastic part 2 and is welded to the terminal post. The second plastic part 2 is used to isolate the side panel 11 from contact with the tab and the terminal post. The second plastic part 2 is provided with a third through hole 22 . The third through hole 22 , the second through hole 31 and the first through hole 112 are all connected. Preferably, the three are directly opposite to each other so as to facilitate the tab to pass through.

[0039] The tabs can pass through the connected first and second through-holes 112, 31, through the second through-holes 31 defined in the first plastic part 3 and the first through-holes 112 defined in the side panel 11. The tabs can connect to the poles located outside the housing 1, allowing the poles and portions of the tabs to be located outside the housing assembly, avoiding occupying the interior space of the housing assembly and improving the internal space utilization of the housing assembly. The second plastic part 2 and the side panel 11 are connected by a clip 4, facilitating assembly and disassembly, and reducing assembly difficulty.

[0040] In the first embodiment, the clip 4 is integrally connected to the bottom surface of the first plastic component 3, and a clip hole is provided in the side panel 11. During assembly, the clip 4 passes through the clip hole and engages. The clip hole is a stepped hole 111. The clip 4 includes a hook at one end that engages with the stepped surface of the stepped hole 111, preventing the clip 4 from protruding from the bottom surface of the side panel 11 and interfering with other structures. At least one clip 4 is provided, and increasing the number of clips 4 improves connection reliability.

[0041] In the second embodiment, the clip 4 is integrally connected to the outer surface of the side panel 11. The first plastic component 3 is provided with a clip hole, through which the clip 4 passes and engages. The clip hole is a stepped hole 111. The clip 4 includes a hook at one end that engages with the stepped surface of the stepped hole 111, preventing the clip 4 from protruding from the bottom surface of the first plastic component 3 and interfering with other structures. At least one clip 4 is provided, and increasing the number of clips 4 improves connection reliability.

[0042] In the third embodiment, there are multiple clips 4, some of which are integrally connected to the bottom surface of the first plastic part 3 and clamped to the side panel 11, and another part of the clips 4 are integrally connected to the side panel 11 and clamped to the first plastic part 3. That is, the third embodiment is a combination of the first embodiment and the second embodiment, and will not be described in detail.

[0043] The first plastic part 3 is flat, reducing the internal space occupied by the housing assembly and improving the internal space utilization of the housing assembly. For example, the first plastic part 3 is a rectangular plate. A protrusion 32 is provided on the side of the first plastic part 3 facing the side plate 11. The second through hole 31 extends through the protrusion 32. The protrusion 32 is inserted into the first through hole 112 to prevent the tab from contacting the side plate 11 when passing through, thereby achieving insulation.

[0044] A tab is provided on the side of the battery cell facing the first plastic part 3, and the number of first through holes 112 and second through holes 31 is equal and not less than 1. Alternatively, a positive tab and a negative tab are provided on the side of the battery cell facing the first plastic part 3. The first through hole 112 includes a first hole portion 1121 and a second hole portion 1122, and the second through hole 31 includes a third hole portion 311 and a fourth hole portion 312. The positive tab passes through the first hole portion 1121 and the third hole portion 311, and the negative tab passes through the second hole portion 1122 and the fourth hole portion 312. The number of the first hole portion 1121 and the third hole portion 311 is equal and not less than 1, and the number of the second hole portion 1122 and the fourth hole portion 312 is equal and not less than 1. By increasing the number of through holes for passing the tabs, the tabs can be easily passed through, facilitating assembly. Preferably, each tab passes through two through holes, and the buckle 4 is arranged between the two through holes. The structure is evenly stressed, and the corresponding tabs are folded toward each other or away from each other after passing through the corresponding two through holes, and do not overlap with each other, further reducing the height.

[0045] The positive and negative tabs are provided on the side of the battery cell facing the first plastic part 3. The first plastic part 3 is provided with a third hole 311 and a fourth hole 312. That is, the first plastic part 3 is a one-piece structure, which can reduce assembly steps and facilitate assembly. Alternatively, two first plastic parts 3 are provided, and the two first plastic parts 3 respectively correspond to the third hole 311 and the fourth hole 312. In other words, the first plastic part 3 is a split structure, with each corresponding to the two tabs. The split structure is more flexible, can reduce weight, and save materials. The first plastic part 3 can be a one-piece structure or a split structure, which can be configured according to actual needs and is not limited.

[0046] Optionally, the housing 1, i.e., the side panel 11, may be provided with an explosion-proof valve 5. The notch on the explosion-proof valve 5 may face either the inside or the outside of the housing 1, or the explosion-proof valve 5 may not be provided. When the first plastic component 3 is an integral structure, the side panel 11 defines a mounting hole 114, on which the explosion-proof valve 5 is mounted. The first plastic component 3 defines a first communicating hole, which is located between the third hole portion 311 and the fourth hole portion 312 and communicates with the mounting hole 114, thereby providing a safety function.

[0047] Optionally, the housing 1, i.e., the side panel 11, may or may not be provided with a liquid injection port. If provided, the liquid injection port may be located in the middle or near one side of the positive or negative terminal of the battery. When the first plastic component 3 is an integral structure, the side panel 11 defines a liquid injection port 113, and the first plastic component 3 defines a second communication hole. The second communication hole is located between the third hole portion 311 and the fourth hole portion 312, and communicates with the liquid injection port 113, thereby providing a clearance function.

[0048] Optionally, the bottom of the housing 1 is open, and after the battery cell, the first plastic part 3 and other related structures are installed, a cover plate is welded to the housing 1 to close the opening.

[0049] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A housing assembly, characterized in that: include: A housing (1), the housing (1) being used to accommodate a battery cell, the battery cell being connected to a tab, the housing (1) comprising a side plate (11), the tab facing the side plate (11), and the side plate (11) being provided with a first through hole (112); A first plastic part (3), the first plastic part (3) is arranged inside the housing (1), so the first plastic part (3) is provided with a second through hole (31), the first through hole (112) and the second through hole (31) are connected, and the pole lug can pass through the first through hole (112) and the second through hole (31) to be connected to the pole; The buckle (4) is connected to the side plate (11) and the first plastic part (3), one of which is integrally connected to the buckle (4) and the other is engaged with the buckle (4).

2. The housing assembly according to claim 1, wherein: The first plastic part (3) is in the shape of a flat plate.

3. The housing assembly according to claim 1, wherein: A convex block (32) is provided on the side of the first plastic part (3) facing the side plate (11), the second through hole (31) passes through the convex block (32), and the convex block (32) is plugged into the first through hole (112).

4. The housing assembly according to claim 1, wherein: A pole ear is provided on the side of the battery core facing the first plastic part (3), and the number of the first through holes (112) and the second through holes (31) are equal and not less than 1; or A positive electrode ear and a negative electrode ear are provided on the side of the battery cell facing the first plastic part (3); the first through hole (112) includes a first hole portion (1121) and a second hole portion (1122); the second through hole (31) includes a third hole portion (311) and a fourth hole portion (312); the positive electrode ear passes through the first hole portion (1121) and the third hole portion (311); the negative electrode ear passes through the second hole portion (1122) and the fourth hole portion (312); the number of the first hole portion (1121) and the third hole portion (311) is equal and not less than 1; the number of the second hole portion (1122) and the fourth hole portion (312) is equal and not less than 1.

5. The housing assembly according to claim 4, wherein: The battery core is provided with a positive electrode ear and a negative electrode ear on a side facing the first plastic part (3); the first plastic part (3) is provided with the third hole portion (311) and the fourth hole portion (312); or the first plastic part (3) is provided with two, and the two first plastic parts (3) are respectively provided with the third hole portion (311) and the fourth hole portion (312).

6. The housing assembly according to claim 5, wherein: A positive electrode tab and a negative electrode tab are provided on the side of the battery core facing the first plastic part (3), and the first plastic part (3) is provided with the third hole portion (311) and the fourth hole portion (312); The side plate (11) is provided with a mounting hole (114), an explosion-proof valve (5) is installed on the mounting hole (114), the first plastic part (3) is provided with a first communicating hole, the first communicating hole is provided between the third hole portion (311) and the fourth hole portion (312), and the first communicating hole is communicated with the mounting hole (114); and / or The side plate (11) is provided with a liquid injection hole (113), the first plastic part (3) is provided with a second communicating hole, the second communicating hole is provided between the third hole portion (311) and the fourth hole portion (312), and the second communicating hole is communicated with the liquid injection hole (113).

7. The housing assembly according to claim 1, wherein: The side plate (11) or the first plastic part (3) is provided with a stepped hole (111), and the buckle (4) includes a hook portion provided at one end, and the hook portion is hooked on the stepped surface of the stepped hole (111).

8. The housing assembly according to claim 1, wherein: The buckle (4) is provided with at least one.

9. The housing assembly according to any one of claims 1 to 8, characterized in that: It also includes a second plastic part (2) arranged outside the shell (1), the first plastic part (3) and the second plastic part (2) are arranged on both sides of the side plate (11), and the second plastic part (2) is plugged into the side plate (11).

10. A battery, characterized in that: The invention comprises a battery cell, a pole, a tab and a shell assembly as claimed in any one of claims 1 to 9, wherein the battery cell is accommodated in the shell (1), the tab is connected to the battery cell, the tab passes through a first through hole (112) and a second through hole (31), and the pole is arranged outside the shell (1) and connected to the tab.

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