Electric connection structure for preventing battery cell from shaking and pulling and battery

Abstract

The utility model relates to the technical field of batteries, and discloses an electric connection structure capable of preventing a battery cell from shaking and pulling and a battery, the electric connection structure capable of preventing the battery cell from shaking and pulling comprises a shell and a connecting sheet connected with a busbar, an inner cavity is arranged in the shell, and the battery cell is arranged in the inner cavity; the shell is provided with a fixedly arranged lower plastic part, the connecting sheet is provided with an inner connecting section electrically connected with the battery cell, and the inner connecting section is fixedly connected with the lower plastic part; according to the electric connection structure capable of preventing the battery cell from shaking and pulling, the lower plastic part is fixedly arranged, the inner connection section is electrically connected with the battery cell, and the inner connection section is fixedly connected with the lower plastic part, so that the battery cell, the inner connection section and the lower plastic part are kept in a relatively fixed state and are combined into an integrated stable structure, the structural stability of the battery cell is kept, and the service life of the battery cell is prolonged. And the phenomenon of shaking and pulling is avoided.

Description

Technical Field

[0001] This utility model patent relates to the technical field of batteries, specifically to an electrical connection structure and a battery that prevents cell shaking and pulling. Background Technology

[0002] Batteries are widely used in new energy electric vehicles, energy storage, mobile devices and other related products. With the rise of new energy, battery technology and demand are growing rapidly.

[0003] The battery includes a casing with an inner cavity containing a battery cell. To enable the battery cell to be electrically connected to the busbar, the battery cell is connected to a connecting piece, which in turn is electrically connected to the busbar.

[0004] In existing technologies, the connecting piece is not stable and is easily pulled and moved, which causes the battery cell to wobble and be pulled, greatly reducing the battery life. Utility Model Content

[0005] The purpose of this invention is to provide an electrical connection structure that prevents battery cells from shaking and being pulled, thereby solving the problem of battery cells being easily shaken and pulled in the prior art.

[0006] This utility model is implemented as follows: an electrical connection structure to prevent the battery cell from shaking and pulling includes a shell and a connecting piece connected to the busbar. The shell has an inner cavity in which the battery cell is disposed. The shell has a fixedly arranged lower plastic part, and the connecting piece has an inner connecting section electrically connected to the battery cell. The inner connecting section is fixedly connected to the lower plastic part.

[0007] Furthermore, the inner connecting section is engaged and fixedly connected with the lower plastic part.

[0008] Furthermore, the lower plastic part is provided with a lower slot, and the inner connecting section is provided with a lower block. The lower block is embedded in the lower slot and engages and is fixedly connected with the lower plastic part.

[0009] Furthermore, the lower card block has a protrusion, the lower card groove has a recess, and the protrusion is embedded in the recess.

[0010] Furthermore, the connecting piece has a bent section, which is connected to the inner connecting section, and the bent section and the inner connecting section are arranged in a bent manner, with the bent section being internally fixed in the lower plastic part.

[0011] Furthermore, the outer shell has a top cover plate, and the lower plastic part is fixedly connected to the top cover plate; the connecting piece has a through section, which is connected to a bending section and passes through the top cover plate and the lower plastic part; the through section is wrapped with an adhesive, which fixes the through section to the top cover plate and the lower plastic part, and seals the through section with the top cover plate and the lower plastic part.

[0012] Furthermore, the protruding section is arranged in a curved manner.

[0013] Furthermore, the lower plastic part is connected to the bottom of the top cover plate, the top of the lower plastic part is provided with a recessed central slot, and the top cover plate has a downward protruding central block, which is embedded downward in the central slot so that the top cover plate and the lower plastic part are engaged and fixedly connected.

[0014] Furthermore, the top cover plate is provided with an upper plastic part, which is fixedly connected to the top cover plate, and the through section passes through the upper plastic part; the connecting piece has an outer connecting section, which is connected to the through section, and the outer connecting section is pressed and fixed on the upper plastic part.

[0015] Compared with the prior art, the electrical connection structure for preventing battery cell shaking and pulling provided by this utility model has a fixed lower plastic part, an inner connecting section electrically connected to the battery cell, and a fixed connection between the inner connecting section and the lower plastic part. In this way, the battery cell, the inner connecting section and the lower plastic part are kept in a relatively fixed state and are combined into a stable structure, maintaining the structural stability of the battery cell and avoiding shaking and pulling.

[0016] This utility model also provides a battery, including the above-mentioned electrical connection structure for preventing cell shaking and pulling.

[0017] Compared with the prior art, the battery provided by this utility model maintains a relatively fixed state between the battery cell, the internal connecting section and the lower plastic part, and is integrated into a stable structure, which maintains the structural stability of the battery cell, avoids shaking and pulling, and improves the service life of the battery. Attached Figure Description

[0018] Figure 1 This is a partial schematic diagram of the electrical connection structure for preventing the battery cell from shaking and pulling, provided by this utility model;

[0019] Figure 2 This is a partial schematic diagram of the electrical connection structure for preventing the battery cell from shaking and pulling, provided by this utility model;

[0020] Figure 3 This is a partial schematic diagram of the fit between the through section, the lower plastic part, and the top cover plate provided by this utility model;

[0021] Figure 4 This is a partial three-dimensional schematic diagram of the top cover, lower plastic part and battery cell assembly provided by this utility model;

[0022] Figure 5 This is a three-dimensional schematic diagram of the connecting piece provided by this utility model;

[0023] In the diagram: battery cell 100; lower plastic part 200, lower groove 202; top cover 300, middle retaining block 301, upper groove 302, upper retaining slot 303; upper plastic part 400, upper retaining block 401; connecting piece 500, inner connecting section 501, bending section 502, through section 503, outer connecting section 504; colloid 600; through hole 700. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] The implementation of this utility model will be described in detail below with reference to specific embodiments.

[0026] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model 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. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0027] Reference Figure 1-5 The image shown is a preferred embodiment of the present invention.

[0028] An electrical connection structure for preventing battery cell shaking and pulling includes a housing and a connecting piece 500 connected to a busbar. The housing has an inner cavity in which a battery cell 100 is disposed. The housing has a fixedly arranged lower plastic part 200. The connecting piece 500 has an inner connecting section 501 electrically connected to the battery cell 100. The inner connecting section 501 is fixedly connected to the lower plastic part 200.

[0029] In practical applications, the inner connecting section 501 of the connecting piece 500 is electrically connected to the battery cell 100, and the connecting piece 500 extends out of the outer casing and connects to the busbar, thereby enabling the battery cell 100 to be electrically connected to external electrical components. The connecting piece 500 can be a tab, or it can be a separately arranged component, in which case the inner connecting section 501 of the connecting piece 500 is connected to the tab to achieve electrical connection with the battery cell 100.

[0030] The aforementioned electrical connection structure for preventing battery cell shaking and pulling has a fixed lower plastic part 200, an inner connecting section 501 electrically connected to the battery cell 100, and a fixed connection between the inner connecting section 501 and the lower plastic part 200. In this way, the battery cell 100, the inner connecting section 501, and the lower plastic part 200 maintain a relatively fixed state and are combined into a stable structure, maintaining the structural stability of the battery cell 100 and avoiding shaking and pulling.

[0031] In this embodiment, the inner connecting segment 501 is engaged and fixedly connected to the lower plastic part 200, which facilitates the fixed connection between the inner connecting segment 501 and the lower plastic part 200, and makes the connection between the inner connecting segment 501 and the lower plastic part 200 more stable.

[0032] In this embodiment, the lower plastic part 200 is provided with a lower retaining groove, and the inner connecting section 501 is provided with a lower retaining block 5011. The lower retaining block 5011 is embedded in the lower retaining groove and is engaged and fixedly connected with the lower plastic part 200. By the lower retaining block 5011 being embedded in the lower retaining groove, the inner connecting section 501 and the lower plastic part 200 are engaged and fixedly connected, and the inner connecting section 501 and the lower plastic part 200 form an integral and stable structure.

[0033] In addition, the lower locking block 5011 has a protrusion and the lower locking groove has a recess. The protrusion is embedded in the recess. Through the embedded cooperation between the protrusion and the recess, the lower locking block 5011 and the lower locking groove can be more stable. The inner connecting section 501 and the lower plastic part 200 are combined into a stable integrated structure.

[0034] In this embodiment, the connecting piece 500 has a bent section 502, which is connected to the inner connecting section 501. The bent section 502 and the inner connecting section 501 are arranged in a bent manner, and the bent section 502 is internally fixed in the lower plastic part 200. By setting the bent section 502, the structural stability of the connecting piece 500 can be improved. Furthermore, since the bent section 502 is internally fixed in the lower plastic part 200, the connecting piece 500 can be re-fixed, resulting in better overall stability of the connecting piece 500.

[0035] In this embodiment, the outer shell has a top cover plate 300, and the lower plastic part 200 is fixedly connected to the top cover plate 300; the connecting piece 500 has a through section 503, which is connected to the bending section 502 and is inserted through the top cover plate 300 and the lower plastic part 200; the through section 503 is wrapped with an adhesive 600, which fixes the through section 503 to the top cover plate 300 and the lower plastic part 200, and seals the through section 503 with the top cover plate 300 and the lower plastic part 200.

[0036] The through section 503 passes through the lower plastic part 200 and the top cover plate 300, and is filled with colloid 600 to maintain the seal between the through section 503 and the lower plastic part 200 and the top cover plate 300, and to fix the through section 503 to the lower plastic part 200 and the top cover plate 300, thereby fixing the connecting piece 500 again.

[0037] In a preferred embodiment, the through section 503 is arranged in a curved manner, that is, the through section 503 forms a concave-convex structure. This makes the fit between the through section 503 and the colloid 600 more stable, facilitates the through section 503 to be kept in a fixed arrangement, and enhances the sealing between the through section 503 and the lower plastic part 200 and the top cover plate 300.

[0038] In this embodiment, the outer shell has a top cover plate 300 and a lower plastic part 200 connected to the bottom of the top cover plate 300; the top of the lower plastic part 200 is provided with a recessed central slot, and the top cover plate 300 has a downward protruding central block 301, which is embedded downward in the central slot so that the top cover plate 300 and the lower plastic part 200 are engaged and fixedly connected.

[0039] The lower plastic part 200 and the top cover plate 300 are fixedly connected by the middle card block 301 embedded in the middle card slot. The mechanical structure makes the lower plastic part 200 and the top cover plate 300 fixedly connected, which is convenient for assembly.

[0040] In this embodiment, the top cover plate 300 is provided with an upper plastic part 400, which is fixedly connected to the top cover plate 300, and the through section 503 passes through the upper plastic part 400; the connecting piece 500 has an outer connecting section 504, which is connected to the through section 503, and the outer connecting section 504 is pressed and fixed on the upper plastic part 400.

[0041] The through section 503 passes through the upper plastic part 400 and is clamped and fixed by the upper plastic part 400. The outer connecting section 504 extends to the top of the upper plastic part 400 for electrical connection with the busbar. The outer connecting section 504 is fixedly pressed against the upper plastic part 400. When the outer connecting section 504 is electrically connected to the busbar, the outer connecting section 504 will not be pulled or moved, thus maintaining the structural stability of the connecting piece 500.

[0042] In addition, the bottom of the top cover 300 has an upwardly recessed upper groove 302, and the top of the lower plastic part 200 has a downwardly recessed lower groove 202. The upper groove 302 and the lower groove 202 are arranged in a staggered manner to form a staggered area.

[0043] A through hole 700 is formed in the top cover plate 300 and the lower plastic part 200. The through hole 700 extends vertically through the lower plastic part 200 and the top cover plate 300. The through section 503 passes through the through hole 700. The misaligned area is connected to the through hole 700. The colloid 600 fills the through hole 700 and the misaligned area, sealing the through section 503 with the top cover plate 300 and the lower plastic part 200, and also sealing the lower plastic part 200 with the top cover plate 300. The degree of sealing can be greatly improved by the misaligned area.

[0044] The top cover plate 300 is provided with an upper slot, and the upper plastic part 400 is provided with an upper locking block 401 protruding downward. The upper locking block 401 is embedded in the upper slot so that the upper plastic part 400 and the top cover plate 300 are locked and fixedly connected. In this way, the outer connecting section 504 is fixedly pressed against the upper plastic part 400 and fixedly connected to the upper plastic part 400, and the lower plastic part 200 is fixedly connected to the top cover plate 300. The inner connecting section 501 is fixedly connected to the lower plastic part 200, so that the connecting piece 500, the upper plastic part 400, the top cover plate 300 and the lower plastic part 200 are combined into a stable integrated structure, avoiding the phenomenon of the connecting piece 500 being pulled and moved, and the battery cell 100 being pulled and shaken.

[0045] This embodiment also provides a battery, including the aforementioned electrical connection structure to prevent cell shaking and pulling. The battery cell 100, the inner connecting section 501, and the lower plastic part 200 are kept in a relatively fixed state and are combined into a stable structure to maintain the structural stability of the cell 100, avoid shaking and pulling, and improve the battery's service life.

[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electrical connection structure to prevent cell shaking and pulling, characterized in that, The device includes a housing and a connecting piece connected to a busbar. The housing has an inner cavity in which a battery cell is disposed. The housing has a fixedly arranged lower plastic part, and the connecting piece has an inner connecting section electrically connected to the battery cell. The inner connecting section is fixedly connected to the lower plastic part.

2. The electrical connection structure for preventing cell shaking and pulling as described in claim 1, characterized in that, The inner connecting section is engaged and fixedly connected to the lower plastic part.

3. The electrical connection structure for preventing cell shaking and pulling as described in claim 2, characterized in that, The lower plastic part is provided with a lower slot, and the inner connecting section is provided with a lower block. The lower block is embedded in the lower slot and is engaged and fixedly connected with the lower plastic part.

4. The electrical connection structure for preventing cell shaking and pulling as described in claim 3, characterized in that, The lower card block has a protrusion, and the lower card groove has a recess, with the protrusion embedded in the recess.

5. The electrical connection structure for preventing cell shaking and pulling as described in any one of claims 1 to 4, characterized in that, The connecting piece has a bent section, which is connected to the inner connecting section, and the bent section and the inner connecting section are arranged in a bent manner. The bent section is built into and fixed in the lower plastic part.

6. The electrical connection structure for preventing cell shaking and pulling as described in claim 5, characterized in that, The outer shell has a top cover plate, and the lower plastic part is fixedly connected to the top cover plate; the connecting piece has a through section, which is connected to a bending section and passes through the top cover plate and the lower plastic part; the through section is wrapped with a colloid, which fixes the through section to the top cover plate and the lower plastic part, and seals the through section with the top cover plate and the lower plastic part.

7. The electrical connection structure for preventing cell shaking and pulling as described in claim 6, characterized in that, The protruding section is arranged in a curved manner.

8. The electrical connection structure for preventing cell shaking and pulling as described in claim 6, characterized in that, The lower plastic part is connected to the bottom of the top cover plate. The top of the lower plastic part is provided with a recessed central slot. The top cover plate has a downward protruding central block. The central block is embedded downward in the central slot so that the top cover plate and the lower plastic part are engaged and fixedly connected.

9. The electrical connection structure for preventing cell shaking and pulling as described in claim 6, characterized in that, The top cover plate is provided with an upper plastic part, which is fixedly connected to the top cover plate, and the through section passes through the upper plastic part; the connecting piece has an outer connecting section, which is connected to the through section, and the outer connecting section is pressed and fixed on the upper plastic part.

10. A battery, characterized in that, The electrical connection structure includes the anti-shaking and pulling structure for the battery cell as described in any one of claims 1 to 9.

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