Battery cover plate and battery

Abstract

The utility model belongs to the technical field of batteries, and discloses a battery cover plate and a battery, the battery cover plate comprises a cover plate body, an upper insulating part, a riveting block and a pole, the cover plate body is provided with a limiting bulge used for forming a non-circular limiting groove, the limiting bulge is provided with a clamping interface, the upper insulating part is provided with a mounting groove, and the riveting block is arranged in the mounting groove. The upper insulating part is matched with the limiting groove in shape, the upper insulating part is provided with a clamping protrusion connected with the clamping connector in an inserted mode, a riveting through hole is formed in the riveting block, the riveting block is embedded in the mounting groove, and the pole is riveted with the riveting block. The non-circular upper insulating part is arranged in the non-circular limiting groove to realize primary rotation stopping, the clamping bulge is inserted into the clamping interface to realize secondary rotation stopping, and the torsion resistance of the pole riveted with the riveting block embedded in the mounting groove of the upper insulating part is improved through a multiple rotation stopping structure; therefore, the condition of pole torsion caused by a load generated by shaking is avoided, and the service life is prolonged.

Description

Technical Field

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

[0002] A battery module is a modular power supply component that combines multiple battery cells in a specific structure and is equipped with the necessary circuitry and control units. By combining multiple battery cells, the battery module can provide a stronger power supply capacity, meeting the needs of increasingly high-power applications.

[0003] Multiple cells within a battery module are connected in series by connecting their terminals to a conductive busbar. However, the onboard battery is subject to loads from the vehicle's swaying motion, which can cause the terminals to rotate, loosening from the busbar and damaging the connection, shortening its service life.

[0004] Therefore, there is an urgent need for a battery cover and a battery to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a battery cover and a battery with strong torsional resistance and long service life.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] In one aspect, a battery cover is provided, comprising:

[0008] A cover body, wherein a first mounting through hole is formed on the cover body, and a limiting protrusion is provided around the outer side of the first mounting through hole, wherein the limiting protrusion is used to form a non-circular limiting groove, and a snap-fit interface is provided on the limiting protrusion;

[0009] An upper insulating member, wherein the upper insulating member is provided with a mounting groove, and a second mounting through hole is opened in the mounting groove and communicated with the first mounting through hole. The upper insulating member is disposed in the limiting groove and is adapted to the shape of the limiting groove. The upper insulating member is provided with a clamping protrusion, and the clamping protrusion is inserted into the clamping interface;

[0010] a riveting block, the riveting block being provided with a riveting through hole cooperating with the second mounting through hole, the riveting block being embedded in the mounting groove;

[0011] A pole, one side of which abuts against a side of the cover body away from the upper insulating member, and the other side of which passes through the first mounting through hole, the second mounting through hole and the riveting through hole in sequence and is riveted to the riveting block.

[0012] Optionally, the limiting protrusion is provided with a plurality of the snap-fit interfaces, and the upper insulating member is provided with the snap-fit protrusions corresponding one-to-one to the plurality of the snap-fit interfaces.

[0013] Optionally, the shapes of the plurality of snap-in interfaces are the same.

[0014] Optionally, the cover body is provided with a plurality of limiting protrusions spaced apart and surrounding the outside of the first mounting through hole, and a notch-shaped snap-fit interface is formed between every two adjacent limiting protrusions.

[0015] Optionally, a groove is provided on the limiting protrusion arranged on the outer side of the first mounting through hole to form a groove-type snap-in interface, and the snap-in interface is a rectangular groove or a dovetail groove.

[0016] Optionally, a through hole is opened on the limiting protrusion arranged on the outside of the first mounting through hole to form the hole-shaped snap-fit interface, and the snap-fit interface is a round hole or a long hole.

[0017] Optionally, the battery cover further includes a lower insulating member, the lower insulating member is provided with a third mounting through hole connected to the first mounting through hole, and the lower insulating member is arranged on a side of the cover body away from the upper insulating member.

[0018] Optionally, the pole includes a limiting portion and a cylindrical portion, the limiting portion abuts against the side of the lower insulating member facing away from the cover body, the cylindrical portion passes through the third mounting through hole, the first mounting through hole, the second mounting through hole and the riveting through hole in sequence, and is riveted to the riveting block, and the battery cover also includes a sealing member, which is sleeved on the outside of the cylindrical portion and includes a first sealing portion abutting against the inner wall of the third mounting through hole, a second sealing portion abutting against the inner wall of the first mounting through hole, and a third sealing portion abutting against the inner wall of the second mounting through hole.

[0019] Optionally, the battery cover further includes an explosion-proof piece and a protective film, a pressure relief hole is opened on the cover body, and the explosion-proof piece is arranged in the pressure relief hole.

[0020] On the other hand, a battery is provided, comprising the battery cover as described in any one of the above items.

[0021] Beneficial effects of the utility model:

[0022] The utility model provides a battery cover plate. By arranging a non-circular limiting groove on the cover plate body, the upper insulating part adapted to the shape of the limiting groove is also non-circular. By arranging the non-circular upper insulating part in the non-circular limiting groove, a first anti-rotation of the upper insulating part is achieved. By arranging a clamping interface on the limiting protrusion and a clamping protrusion on the upper insulating part, and inserting the clamping protrusion into the clamping interface, a second anti-rotation of the upper insulating part and the cover plate body is achieved. Through the multiple anti-rotation structures, the anti-torsion performance of the pole column riveted with the riveting block embedded in the installation groove of the upper insulating part is improved, thereby avoiding the situation that the pole column is twisted due to the load generated by shaking during the driving of the vehicle, damaging the battery, and prolonging the service life.

[0023] The utility model also provides a battery. By applying the above-mentioned battery cover plate, the battery has strong anti-torsion performance, avoids the situation that the pole column is separated from the bus bar due to the load generated by shaking during the driving of the vehicle, and improves the power supply stability after connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is an exploded view of the structure of the battery cover plate provided by the utility model;

[0025] Figure 2 is a schematic diagram of the connection relationship between the upper insulating part and the cover plate body of the battery cover plate provided by the utility model;

[0026] Figure 3 is a schematic diagram of the structure of the cover plate body of the battery cover plate provided by the utility model;

[0027] Figure 4 is a schematic diagram of the structure of the upper insulating part of the battery cover plate provided by the utility model;

[0028] Figure 5 is a schematic diagram of the structure of the seal of the battery cover plate provided by the utility model.

[0029] In the figure:

[0030] 1. Cover plate body; 11. First installation through hole; 12. Limiting protrusion; 13. Limiting groove; 14. Clamping interface; 15. Pressure relief hole;

[0031] 2. Upper insulating part; 21. Installation groove; 2,2. Second installation through hole; 23. Clamping protrusion;

[0032] 3. Riveting block; 31. Riveting through hole;

[0033] 4. Pole column;

[0034] 5. Lower insulating part; 51. Third installation through hole;

[0035] 6. Sealing member; 61. First sealing portion; 62. Second sealing portion; 63. Third sealing portion;

[0036] 7. Explosion-proof disk;

[0037] 8. Protective film. DETAILED DESCRIPTION

[0038] The present invention 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 intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0039] 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.

[0040] 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.

[0041] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0042] A battery module is a modular power supply component that combines multiple battery cells in a specific structure and is equipped with the necessary circuitry and control units. By combining multiple battery cells, the battery module can provide a stronger power supply capacity, meeting the needs of increasingly high-power applications.

[0043] Multiple cells within a battery module are connected in series by connecting their terminals to a conductive busbar. However, the onboard battery is subject to loads from the vehicle's swaying motion, which can cause the terminals to rotate, loosening from the busbar and damaging the connection, shortening its service life.

[0044] Therefore, in order to improve the anti-torsion performance of the pole and avoid damage caused by the torsion of the pole, this embodiment provides a battery cover.

[0045] like Figures 1 to 5 As shown, the battery cover includes a cover body 1, an upper insulating member 2, a rivet block 3 and a pole 4. The cover body 1 is provided with a first mounting through hole 11, and a limiting protrusion 12 is provided around the outer side of the first mounting through hole 11. The limiting protrusion 12 is used to form a non-circular limiting groove 13. A snap-fit interface 14 is provided on the limiting protrusion 12. The upper insulating member 2 is provided with a mounting groove 21, and a second mounting through hole 22 communicating with the first mounting through hole 11 is provided in the mounting groove 21. The upper insulating member 2 It is arranged in the limiting groove 13 and is adapted to the shape of the limiting groove 13. A snap-fit protrusion 23 is provided on the upper insulating member 2, and the snap-fit protrusion 23 is inserted into the snap-fit interface 14. The rivet block 3 is provided with a rivet through hole 31 that cooperates with the second mounting through hole 22. The rivet block 3 is embedded in the mounting groove 21. One side of the pole 4 abuts against the side of the cover body 1 away from the upper insulating member 2, and the other side passes through the first mounting through hole 11, the second mounting through hole 22 and the rivet through hole 31 in sequence, and is riveted with the rivet block 3.

[0046] By providing a non-circular limiting groove 13 on the cover body 1, the upper insulating member 2 that is adapted to the shape of the limiting groove 13 is also non-circular. By providing the non-circular upper insulating member 2 in the non-circular limiting groove 13, a single rotation stop of the upper insulating member 2 is achieved. By providing a snap-fit interface 14 on the limiting protrusion 12, providing a snap-fit protrusion 23 on the upper insulating member 2, and inserting the snap-fit protrusion 23 into the snap-fit interface 14, a double rotation stop of the upper insulating member 2 and the cover body 1 is achieved. Through the multiple rotation-stop structures, the torsional resistance of the pole 4 riveted to the rivet block 3 embedded in the mounting groove 21 of the upper insulating member 2 is improved, thereby avoiding the situation where the pole 4 is twisted due to the load generated by shaking during the driving of the vehicle, thereby damaging the battery and extending the service life.

[0047] In this embodiment, the limiting protrusions 12 form a rectangular limiting groove 13, so the projection of the upper insulating member 2 on the cover body 1 is rectangular. The battery cover with a double anti-rotation structure can be used on both square-shell batteries and blade batteries. This battery cover is used on square-shell batteries, so the poles 4 include positive and negative poles. The cover body 1 is a plain aluminum plate with two first mounting holes 11 formed therein, corresponding to the positive and negative poles, respectively. In this battery cover, both the positive and negative poles are provided with upper insulating members 2 for insulation protection. The upper insulating members 2 are made of plastic with insulating properties.

[0048] Alternatively, as Figure 3 、 Figure 4 As shown, the limiting protrusion 12 is provided with a plurality of snap-fit interfaces 14, and the upper insulating member 2 is provided with snap-fit protrusions 23 corresponding one to one with the plurality of snap-fit interfaces 14. By providing a plurality of snap-fit interfaces 14 and snap-fit protrusions 23, the torsional strength between the upper insulating member 2 and the limiting protrusion 12 is improved.

[0049] In this embodiment, the number of the clamping interfaces 14 and the clamping protrusions 23 can be freely set according to needs. In this embodiment, four clamping interfaces 14 and four clamping protrusions 23 are provided.

[0050] Alternatively, as Figure 3 As shown, the shapes of the multiple snap-fit interfaces 14 are all the same. By making the shapes of the multiple snap-fit interfaces 14 consistent, it is ensured that when the upper insulator 2 is subjected to a torsional load, the snap-fit interfaces 14 and the snap-fit protrusions 23 of the same shape can share the torsional load, ensuring that the forces on the snap-fit protrusions 23 and the snap-fit interfaces 14 are balanced.

[0051] Optionally, the cover body 1 is provided with a plurality of spaced-apart limiting protrusions 12 surrounding the outer side of the first mounting through-hole 11, with a notch-shaped snap-fit interface 14 formed between each two adjacent limiting protrusions 12. By employing multiple spaced-apart limiting protrusions 12, the notch-shaped snap-fit interface 14 can be directly formed, eliminating the need for separate processing of the snap-fit interface 14 and reducing manufacturing costs.

[0052] Optionally, a groove is formed on the stopper protrusion 12 disposed around the outside of the first mounting hole 11 to form a slotted snap-fit interface 14. The snap-fit interface 14 is a rectangular groove or a dovetail groove. By forming a groove on the stopper protrusion 12 to form the slotted snap-fit interface 14, the stopper protrusion 12 is a one-piece, slotted structure. Compared to a split structure, this structure has higher structural strength and greater torsional resistance.

[0053] Optionally, a through hole is formed on the limiting protrusion 12 disposed around the outside of the first mounting through hole 11 to form a hole-shaped snap-fit interface 14. The snap-fit interface 14 is a round hole or an elongated hole. By forming a through hole in the limiting protrusion 12 to form the hole-shaped snap-fit interface 14, on the one hand, the limiting protrusion 12 is an integrated structure with a hole, which has higher structural strength and stronger torsional resistance than a split structure. On the other hand, the hole-shaped snap-fit interface 14 has a larger contact area with the snap-fit protrusion 23, thereby having stronger torsional resistance.

[0054] Alternatively, as Figure 1 As shown, the battery cover also includes a lower insulating member 5, which is provided with a third mounting hole 51 that communicates with the first mounting hole 11. The lower insulating member 5 is disposed on the side of the cover body 1 facing away from the upper insulating member 2. By disposing the lower insulating member 5 on the side of the cover body 1 facing away from the upper insulating member 2, both sides of the cover body 1 are insulated, improving safety. In this embodiment, the lower insulating member 5 is made of insulating plastic, and both the upper and lower insulating members 2 and 5 are manufactured using an injection molding process.

[0055] Alternatively, as Figure 1 、 Figure 5 As shown, the pole 4 includes a limiting portion and a cylindrical portion, the limiting portion abuts against the side of the lower insulating member 5 away from the cover body 1, the cylindrical portion passes through the third mounting through hole 51, the first mounting through hole 11, the second mounting through hole 22 and the riveting through hole 31 in sequence, and is riveted to the riveting block 3, the battery cover also includes a sealing member 6, the sealing member 6 is sleeved on the outside of the cylindrical portion, and includes a first sealing portion 61 abutting against the inner wall of the third mounting through hole 51, a second sealing portion 62 abutting against the inner wall of the first mounting through hole 11 and a third sealing portion 63 abutting against the inner wall of the second mounting through hole 22. By providing a seal 6 with a first sealing portion 61 abutting the inner wall of the third mounting hole 51, a second sealing portion 62 abutting the inner wall of the first mounting hole 11, and a third sealing portion 63 abutting the inner wall of the second mounting hole 22, a triple seal is formed on the battery cover, preventing the electrolyte inside the battery from leaking through the gap between the terminal 4 and the first mounting hole 11, the second mounting hole 22, or the third mounting hole 51. In this embodiment, the seal 6 is a stepped sealing ring.

[0056] Alternatively, as Figure 1 As shown, the battery cover also includes an explosion-proof disc 7 and a protective film 8. The cover body 1 is provided with a pressure relief hole 15, and the explosion-proof disc 7 is disposed in the pressure relief hole 15. By providing the explosion-proof disc 7 on the battery cover, when high-pressure gas inside the battery is present, it can break through the explosion-proof disc 7 to release pressure, avoid explosion, and improve the safety of the battery.

[0057] In this embodiment, in order to protect the explosion-proof sheet 7, a protective film 8 is also pasted on the surface of the explosion-proof sheet 7.

[0058] In this embodiment, a battery is also provided. The battery includes the above-mentioned battery cover plate. By applying the above-mentioned battery cover plate, the battery has strong anti-torsion performance, avoiding the situation that the pole column 4 is separated from the bus bar due to the load generated by shaking during the driving of the vehicle, and improving the power supply stability after connection.

[0059] Obviously, the above-mentioned embodiments of the present invention are only examples for clearly explaining the present invention, and are not limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. Battery cover, characterized in that: The battery cover comprises: A cover plate body (1), wherein a first mounting through hole (11) is provided on the cover plate body (1), and a limiting protrusion (12) is provided on the outer side of the first mounting through hole (11), wherein the limiting protrusion (12) is used to form a non-circular limiting groove (13), and a snap-fit interface (14) is provided on the limiting protrusion (12); An upper insulating member (2), wherein the upper insulating member (2) is provided with a mounting groove (21), and a second mounting through hole (22) communicating with the first mounting through hole (11) is provided in the mounting groove (21); the upper insulating member (2) is arranged in the limiting groove (13) and is adapted to the shape of the limiting groove (13); the upper insulating member (2) is provided with a snap-fitting protrusion (23), and the snap-fitting protrusion (23) is inserted into the snap-fitting interface (14); A riveting block (3), the riveting block (3) being provided with a riveting through hole (31) cooperating with the second mounting through hole (22), and the riveting block (3) being embedded in the mounting groove (21); A pole (4), one side of the pole (4) abuts against a side of the cover plate body (1) facing away from the upper insulating member (2), and the other side sequentially passes through the first mounting through hole (11), the second mounting through hole (22) and the riveting through hole (31), and is riveted to the riveting block (3).

2. The battery cover according to claim 1, characterized in that: The limiting protrusion (12) is provided with a plurality of the clamping interfaces (14), and the upper insulating member (2) is provided with the clamping protrusions (23) corresponding one-to-one to the plurality of the clamping interfaces (14).

3. The battery cover according to claim 2, characterized in that: The shapes of the plurality of snap-in interfaces (14) are all the same.

4. The battery cover according to claim 1, characterized in that: The cover plate body (1) is provided with a plurality of spaced-apart limiting protrusions (12) surrounding the outside of the first mounting through hole (11), and a notch-shaped snap-fit interface (14) is formed between each two adjacent limiting protrusions (12).

5. The battery cover according to claim 1, characterized in that: A groove is provided on the limiting protrusion (12) arranged on the outside of the first mounting through hole (11) to form a groove-shaped snap-fit interface (14). The snap-fit interface (14) is a rectangular groove or a dovetail groove.

6. The battery cover according to claim 1, characterized in that: A through hole is provided on the limiting protrusion (12) arranged on the outside of the first mounting through hole (11) to form a hole-shaped snap-fit interface (14), and the snap-fit interface (14) is a round hole or a long hole.

7. The battery cover according to claim 1, characterized in that: The battery cover plate further comprises a lower insulating member (5), the lower insulating member (5) being provided with a third mounting through hole (51) communicating with the first mounting through hole (11), and the lower insulating member (5) being arranged on a side of the cover plate body (1) facing away from the upper insulating member (2).

8. The battery cover according to claim 7, characterized in that: The pole (4) includes a limiting portion and a cylindrical portion, wherein the limiting portion abuts against the side of the lower insulating member (5) away from the cover body (1), and the cylindrical portion passes through the third mounting through hole (51), the first mounting through hole (11), the second mounting through hole (22) and the riveting through hole (31) in sequence, and is riveted to the riveting block (3). The battery cover also includes a sealing member (6), which is sleeved on the outside of the cylindrical portion and includes a first sealing member (61) abutting against the inner wall of the third mounting through hole (51), a second sealing member (62) abutting against the inner wall of the first mounting through hole (11) and a third sealing member (63) abutting against the inner wall of the second mounting through hole (22).

9. The battery cover according to claim 1, characterized in that: The battery cover plate further comprises an explosion-proof plate (7) and a protective film (8); a pressure relief hole (15) is provided on the cover plate body (1), and the explosion-proof plate (7) is arranged in the pressure relief hole (15).

10. A battery, characterized in that The battery comprises the battery cover according to any one of claims 1 to 9.

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