Battery cover plate structure and battery

Abstract

The utility model provides a battery cover plate structure and a battery. The battery cover plate structure comprises a pole, a top cover, lower plastic, a sealing ring and a connecting piece, the battery cover plate structure comprises an anti-rotation block, a third pole hole is formed in the anti-rotation block, the pole sequentially penetrates through the first pole hole, the second pole hole and the third pole hole, and the top cover is arranged on the top cover. A containing groove is formed in one side, deviating from the top cover, of the lower plastic, and the anti-rotation block is located in the containing groove and welded to the pole. When the pole column is welded, the positioning portion on the top face of the pole column penetrates through the positioning hole in the surface of the connecting piece to achieve positioning of the pole column, the problem that the pole column deviates in the welding process is effectively prevented, the anti-rotation block, the lower plastic and the sealing ring interact to form an anti-rotation whole, it is guaranteed that the pole column cannot rotate in the welding process, and the welding quality is guaranteed; and the anti-rotation block is arranged in the accommodating groove of the lower plastic, so that the structure is simple, and the follow-up assembly and use of the battery are facilitated.

Description

Technical Field

[0001] The present disclosure relates to the technical field of battery cover plate structures, and in particular to a battery cover plate structure and a battery. Background Art

[0002] The battery pole and connecting piece are generally connected by welding. If the connecting piece and the cover pole are not positioned during the welding process, the connecting piece is pressed onto the pole surface by a welding jig for welding. This method can easily cause the connecting piece to be offset relative to the cover pole, resulting in a reduction in the effective welding area, which ultimately affects the battery overcurrent and temperature rise, resulting in poor welding results.

[0003] In order to solve the above problems, a Chinese patent with application number 202023123972.X discloses a square lithium battery pole with an anti-rotation structure, including a base and a column, the base and the column are connected as one piece, a positioning hole is provided on the upper surface of the base, a notch is provided in the middle of the column, a sealing ring is sleeved at the notch, a connecting flange is fixedly connected to the outer wall of the sealing ring, a connecting rod is provided through the positioning hole on the base, the connecting flange and the base are connected through the connecting rod, and the side walls at both ends of the connecting rod are threaded with fixing bolts.

[0004] The above-mentioned square lithium battery pole with anti-rotation structure can improve the connection sealing by providing a rubber sealing ring, and can effectively prevent the rotation of the pole by providing a connecting rod, a fixing bolt and a washer, and the connecting rod cooperates with the fixing bolt to fix the base and the connecting flange. However, the structure is relatively complicated, which makes the assembly process of the battery complicated.

[0005] Therefore, there is a need for a battery cover structure and a battery that does not cause pole rotation and has a relatively simple structure. Utility Model Content

[0006] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a battery cover structure and a battery that have a positioning effect when welding a pole and prevent the pole from rotating.

[0007] The purpose of this disclosure is achieved through the following technical solutions:

[0008] A battery cover structure, comprising a pole, a top cover, a lower plastic, a sealing ring and a connecting piece, the top cover being provided with a first pole hole, the lower plastic being provided with a second pole hole; a positioning portion is provided at one end of the pole, the connecting piece being provided with a positioning hole, the positioning portion being passed through the positioning hole, the lower plastic being clamped and connected between the top cover and the connecting piece, the sealing ring being clamped and connected between the top cover and the pole, the sealing ring being located in the first pole hole, and the sealing ring being covered on the outer peripheral wall of the pole; the battery cover structure comprising an anti-rotation block, the anti-rotation block being provided with a third pole hole, the pole being passed through the first pole hole, the second pole hole and the third pole hole in sequence, a receiving groove being provided on the side of the lower plastic facing away from the top cover, the anti-rotation block being located in the receiving groove, and the anti-rotation block being welded to the pole.

[0009] In one embodiment, the anti-rotation block is rectangular in shape, and the receiving groove is adapted to the anti-rotation block.

[0010] In one embodiment, the pole includes two pole monomers and a connecting block, the two pole monomers are a first pole monomer and a second pole monomer, the first pole monomer and the second pole monomer are both connected to the connecting block; the number of the first pole hole, the second pole hole and the third pole hole are two, and each of the pole monomers is sequentially penetrated into the corresponding first pole hole, the second pole hole and the third pole hole.

[0011] In one embodiment, the first pole unit, the second pole unit and the connecting block are an integrally formed structure.

[0012] In one embodiment, the first pole monomer and the second pole monomer are both cylindrical.

[0013] In one embodiment, the number of the poles is two, namely a positive pole and a negative pole; the number of the anti-rotation blocks is two, namely a first anti-rotation block and a second anti-rotation block, the positive pole is passed through the third pole hole of the first anti-rotation block, and the negative pole is passed through the third pole hole of the second anti-rotation block.

[0014] In one of the embodiments, the battery cover structure further includes an insulating member, and the insulating member is clamped and connected between the pole and the top cover.

[0015] In one of the embodiments, the battery cover structure further includes an explosion-proof sheet, the top cover is provided with an explosion-proof hole, the explosion-proof hole is arranged adjacent to the pole hole, and the explosion-proof sheet is located in the explosion-proof hole.

[0016] The present application also provides a battery, comprising the battery cover structure described in any of the above embodiments.

[0017] Compared with the prior art, the present invention has at least the following advantages:

[0018] In the battery cover plate structure and the battery mentioned above, the top surface of the pole is provided with a positioning portion, the connecting piece is provided with a positioning hole, and the positioning portion passes through the positioning hole, that is, when welding the pole, the positioning portion on the top surface of the pole passes through the positioning hole on the surface of the connecting piece to achieve the positioning of the pole, which effectively prevents the pole from being offset during welding, making the welding reliable. Furthermore, a receiving groove is provided on the side of the lower plastic away from the top cover, and the anti-rotation block is located in the receiving groove, that is, the anti-rotation block is clamped between the lower plastic and the connecting piece, and the anti-rotation block, the lower plastic and the sealing ring interact with each other to form an anti-rotation whole, ensuring that the pole will not rotate during welding, ensuring the welding quality, and the anti-rotation block is placed in the receiving groove of the lower plastic, the structure is simple, and it is convenient for the subsequent assembly and use of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic structural diagram of a battery cover structure according to an embodiment;

[0021] Figure 2 for Figure 1 An exploded structural diagram of a battery cover structure is shown;

[0022] Figure 3 for Figure 1 A schematic diagram of the structure of the pole of the battery cover structure shown;

[0023] Figure 4 for Figure 1 Schematic diagram of the structure of the lower plastic of the battery cover structure shown. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of the present disclosure, the present disclosure will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present disclosure are given in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present disclosure more thoroughly and comprehensively understood.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present disclosure. The terms used herein in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0027] The present disclosure provides a battery cover structure, comprising a pole, a top cover, a lower plastic, a sealing ring and a connecting piece, wherein a positioning portion is provided on the top surface of the pole, a positioning hole is provided on the connecting piece, the positioning portion passes through the positioning hole, the lower plastic is clamped and connected between the top cover and the connecting piece, and the sealing ring is clamped and connected between the top cover and the pole; the battery cover structure comprises an anti-rotation block, a receiving groove is provided on a side of the lower plastic facing away from the top cover, and the anti-rotation block is located in the receiving groove.

[0028] In the battery cover plate structure and the battery mentioned above, the top surface of the pole is provided with a positioning portion, the connecting piece is provided with a positioning hole, and the positioning portion passes through the positioning hole, that is, when welding the pole, the positioning portion on the top surface of the pole passes through the positioning hole on the surface of the connecting piece to achieve the positioning of the pole, which effectively prevents the pole from being offset during welding, making the welding reliable. Furthermore, a receiving groove is provided on the side of the lower plastic away from the top cover, and the anti-rotation block is located in the receiving groove, that is, the anti-rotation block is clamped between the lower plastic and the connecting piece, and the anti-rotation block, the lower plastic and the sealing ring interact with each other to form an anti-rotation whole, ensuring that the pole will not rotate during welding, ensuring the welding quality, and the anti-rotation block is placed in the receiving groove of the lower plastic, the structure is simple, and it is convenient for the subsequent assembly and use of the battery.

[0029] In order to better understand the technical solutions and beneficial effects of the present invention, the present invention is further described in detail below in conjunction with specific embodiments:

[0030] like Figures 1 to 4 As shown, a battery cover structure of an embodiment includes a pole 100, a top cover 200, a lower plastic 300, a sealing ring 400 and a connecting piece 500, wherein the top cover 200 is provided with a first pole hole 201, and the lower plastic 300 is provided with a second pole hole 301;

[0031] A positioning portion 110 is provided at one end of the pole 100, a positioning hole 501 is provided on the connecting piece 500, and the positioning portion 110 passes through the positioning hole 501. The lower plastic 300 is clamped and connected between the top cover 200 and the connecting piece 500, and the sealing ring 400 is clamped and connected between the top cover 200 and the pole 100. The sealing ring 400 is located in the first pole hole 201, and the sealing ring 400 is covered on the outer peripheral wall of the pole 100.

[0032] The battery cover structure 10 also includes an anti-rotation block 600, which is provided with a third pole hole 601. The pole 100 is sequentially inserted into the first pole hole 201, the second pole hole 301 and the third pole hole 601. The lower plastic 300 is provided with a receiving groove 305 on the side away from the top cover 200, and the anti-rotation block 600 is located in the receiving groove 305.

[0033] In this embodiment, the battery cover structure 10 includes a pole 100, a top cover 200, a lower plastic 300, a sealing ring 400 and a connecting piece 500. The top surface of the pole 100 is provided with a positioning portion 110, and the connecting piece 500 is provided with a positioning hole 501. The positioning portion 110 passes through the positioning hole 501. It can be understood that by providing the positioning portion 110 on the top surface of the pole 100 and opening the positioning hole 501 on the surface of the connecting piece 500, the positioning portion 110 can pass through the positioning hole 501 when welding the pole 100 to initially fix the pole 100, which is convenient for subsequent welding. Furthermore, a receiving groove 305 is provided on a side of the lower plastic 300 away from the top cover 200, and the anti-rotation block 600 is located in the receiving groove 305. It can be understood that since the pole 100 needs to pass through the top cover 200 and the lower plastic 300 and welded with the connecting piece 500, it is easy to cause the pole 100 to be unstable and rotate during welding. Therefore, an anti-rotation whole is formed by the anti-rotation block 600, the lower plastic 300 and the sealing ring 400, the sealing ring 400 is sealed and connected to the circumference of the pole 100, and the lower plastic 300 is fixed between the top cover 200 and the connecting piece 500, to ensure that the pole 100 does not rotate during welding, ensure reliable welding, and facilitate subsequent assembly and use of the battery.

[0034] In the above-mentioned battery cover structure 10 and battery, a positioning portion 110 is provided on the top surface of the pole 100, and a positioning hole 501 is opened on the connecting piece 500. The positioning portion 110 passes through the positioning hole 501. That is, when welding the pole 100, the positioning portion 110 on the top surface of the pole 100 passes through the positioning hole 501 on the surface of the connecting piece 500 to realize the positioning of the pole 100, which effectively prevents the problem of displacement of the pole 100 during welding and makes the welding reliable. Furthermore, a receiving groove 305 is provided on the side of the lower plastic 300 facing away from the top cover 200, and the anti-rotation block 600 is located in the receiving groove 305, that is, the anti-rotation block 600 is clamped between the lower plastic 300 and the connecting piece 500, and the anti-rotation block 600, the lower plastic 300 and the sealing ring 400 interact with each other to form an anti-rotation whole, thereby ensuring that the pole 100 does not rotate during welding, thereby ensuring the welding quality, and placing the anti-rotation block 600 in the receiving groove 305 of the lower plastic 300 has a simple structure, which is convenient for the subsequent assembly and use of the battery.

[0035] like Figure 1 and Figure 2 As shown, in one embodiment, the top cover 200 is provided with a first pole hole 201, the lower plastic 300 is provided with a second pole hole 301, the anti-rotation block 600 is provided with a third pole hole 601, and the pole 100 sequentially passes through the first pole hole 201, the second pole hole 301 and the third pole hole 601 and is connected to the connecting piece 500. In this embodiment, the pole 100 sequentially passes through the top cover 200, the lower plastic 300 and the pressing block and is welded to the connecting piece 500, and the first pole hole 201201, the second pole hole 301 and the third pole hole 601 ensure the normal assembly of the pole 100, and allow the current to be normally conducted between the pole 100 and the connecting piece 500.

[0036] like Figure 1 and Figure 2 As shown, in one embodiment, the shape of the anti-rotation block 600 is rectangular, and the receiving groove 305 is adapted to the anti-rotation block 600. In this embodiment, the receiving groove 305 is adapted to the shape of the anti-rotation block 600, and both are rectangular. It can be understood that the rectangular anti-rotation block 600 is located in the rectangular receiving groove 305 and will not rotate, that is, the anti-rotation block 600 is fixed in the receiving groove 305, so that the anti-rotation block 600 is used to prevent the pole 100 from rotating. In other embodiments, the anti-rotation block 600 and the receiving groove 305 can also be triangular or other structures that are not easy to rotate. It can be understood that the anti-rotation block 600 and the receiving groove 305 should not be circular.

[0037] like Figure 3As shown, in one embodiment, the pole 100 includes two pole monomers 120 and a connecting block 130, the two pole monomers 120 are respectively a first pole monomer 121 and a second pole monomer 122, the first pole monomer 121 and the second pole monomer 122 are both connected to the connecting block 130; the number of the first pole hole 201, the second pole hole 301 and the third pole hole 601 are two, each of the pole monomers 120 is sequentially penetrated in the corresponding first pole hole 201, the second pole hole 301 and the third pole hole 601. In this embodiment, the pole 100 includes two pole monomers 120 and a connecting block 130. It can be understood that the pole 100 is a bipolar pole structure, and the pole 100 with a bipolar pole structure can meet the overcurrent requirements of a larger current and improve the charging and discharging performance of the battery.

[0038] like Figure 3 As shown, in one embodiment, the first pole monomer 121, the second pole monomer 122 and the connecting block 130 are an integrally formed structure. In this embodiment, the first pole monomer 121, the second pole monomer 122 and the connecting block 130 are integrally formed, so that the pole 100 has a higher structural strength, and the pole 100 can be relatively fixed, which facilitates the welding of the pole 100. In other embodiments, the first pole monomer 121, the second pole monomer 122 and the connecting block 130 can also be spliced ​​together by welding.

[0039] like Figure 3 As shown, in one embodiment, the first pole monomer 121 and the second pole monomer 122 are both cylindrical. In this embodiment, the first pole monomer 121 and the second pole monomer 122 are both cylindrical. It can be understood that the first pole monomer 121 and the second pole monomer 122 are both cylindrical, and accordingly. The third pole hole 601 is also circular, so that the pole 100 is easy to weld.

[0040] like Figure 2 and Figure 3 As shown, in one embodiment, the number of the poles 100 is two, namely the positive pole and the negative pole; the number of the anti-rotation blocks 600 is two, namely the first anti-rotation block 610 and the second anti-rotation block 620, the positive pole is inserted into the third pole hole 601 of the first anti-rotation block 610, and the negative pole is inserted into the third pole hole 601 of the second anti-rotation block 620. In this embodiment, the positive pole and the negative pole are both equipped with anti-rotation blocks 600, the positive pole corresponds to the first anti-rotation block 610, and the negative pole corresponds to the second anti-rotation block 620, so that the pole 100 as a whole will not rotate, ensuring the normal assembly and use of the battery.

[0041] like Figure 1As shown, in one embodiment, the battery cover structure 10 further includes an insulating member 700, and the insulating member 700 is clamped and connected between the pole 100 and the top cover 200. In this embodiment, the insulating member 700 is an insulating rubber ring, which surrounds and covers the circumference of the pole 100 to ensure insulation between the pole 100 and the top cover 200, so as to ensure normal use of the battery.

[0042] like Figure 1 As shown, in one embodiment, the battery cover plate structure 10 further includes an explosion-proof sheet 800, the top cover is provided with an explosion-proof hole 202, the explosion-proof hole 202 is arranged adjacent to the first pole hole 201, and the explosion-proof sheet 800 is located in the explosion-proof hole 202. In this embodiment, the explosion-proof hole 202 is elliptical in shape, the explosion-proof sheet 800 is adapted to the explosion-proof hole 202, and there is an air guide channel between the explosion-proof sheet 800 and the explosion-proof hole 202. When the battery has thermal runaway, the high-temperature and high-pressure gas is discharged through the air guide channel, so as to prevent the battery from exploding due to the failure to discharge the high-temperature and high-pressure gas generated by the thermal runaway of the battery in time, thereby improving the safety performance of the battery.

[0043] The present application also provides a battery, comprising the battery cover structure 10 of any of the above embodiments.

[0044] Compared with the prior art, the present invention has at least the following advantages:

[0045] In the above-mentioned battery cover structure 10 and battery, a positioning portion 110 is provided on the top surface of the pole 100, and a positioning hole 501 is opened on the connecting piece 500. The positioning portion 110 passes through the positioning hole 501. That is, when welding the pole 100, the positioning portion 110 on the top surface of the pole 100 passes through the positioning hole 501 on the surface of the connecting piece 500 to realize the positioning of the pole 100, which effectively prevents the problem of displacement of the pole 100 during welding and makes the welding reliable. Furthermore, a receiving groove 305 is provided on the side of the lower plastic 300 facing away from the top cover 200, and the anti-rotation block 600 is located in the receiving groove 305, that is, the anti-rotation block 600 is clamped between the lower plastic 300 and the connecting piece 500, and the anti-rotation block 600, the lower plastic 300 and the sealing ring 400 interact with each other to form an anti-rotation whole, thereby ensuring that the pole 100 does not rotate during welding, thereby ensuring the welding quality, and placing the anti-rotation block 600 in the receiving groove 305 of the lower plastic 300 has a simple structure, which is convenient for the subsequent assembly and use of the battery.

[0046] The above-mentioned embodiments only express several implementation methods of the present disclosure, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present disclosure, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the patent of the present disclosure shall be based on the attached claims.

Claims

1. A battery cover structure, comprising a pole, a top cover, a lower plastic, a sealing ring and a connecting piece, wherein the top cover is provided with a first pole hole, the lower plastic is provided with a second pole hole, a positioning portion is provided at one end of the pole, the connecting piece is provided with a positioning hole, the positioning portion is penetrated through the positioning hole, the lower plastic is clamped and connected between the top cover and the connecting piece, the sealing ring is clamped and connected between the top cover and the pole, the sealing ring is located in the first pole hole, and the sealing ring is covered on the outer peripheral wall of the pole, characterized in that: The battery cover structure includes an anti-rotation block, the anti-rotation block is provided with a third pole hole, the pole is sequentially inserted into the first pole hole, the second pole hole and the third pole hole, the lower plastic is provided with a receiving groove on the side away from the top cover, the anti-rotation block is located in the receiving groove, and the anti-rotation block is welded to the pole.

2. The battery cover structure according to claim 1, characterized in that: The anti-rotation block is rectangular in shape, and the accommodating groove is adapted to the anti-rotation block.

3. The battery cover structure according to claim 1, characterized in that: The pole comprises two pole monomers and a connection block, the two pole monomers are respectively a first pole monomer and a second pole monomer, and the first pole monomer and the second pole monomer are both connected to the connection block; The number of the first pole hole, the second pole hole and the third pole hole are all two, and each pole monomer is sequentially penetrated through the corresponding first pole hole, the second pole hole and the third pole hole.

4. The battery cover structure according to claim 3, characterized in that: The first pole monomer, the second pole monomer and the connecting block are an integrally formed structure.

5. The battery cover structure according to claim 3, characterized in that: The first pole monomer and the second pole monomer are both cylindrical.

6. The battery cover structure according to claim 1, characterized in that: The number of the poles is two, namely a positive pole and a negative pole; the number of the anti-rotation blocks is two, namely a first anti-rotation block and a second anti-rotation block, the positive pole is passed through the third pole hole of the first anti-rotation block, and the negative pole is passed through the third pole hole of the second anti-rotation block.

7. The battery cover structure according to claim 1, characterized in that: The battery cover structure also includes an insulating member, which is clamped and connected between the pole and the top cover.

8. The battery cover structure according to claim 1, characterized in that: The battery cover structure also includes an explosion-proof sheet. The top cover is provided with an explosion-proof hole, the explosion-proof hole is arranged adjacent to the pole hole, and the explosion-proof sheet is located in the explosion-proof hole.

9. A battery, characterized in that: The battery cover structure comprises the battery cover structure according to any one of claims 1 to 8.

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