CN218005189U - Pole components and batteries - Google Patents

Abstract

The utility model relates to the technical field of batteries, and provides a pole component and a battery. The pole assembly includes: pole; explosion-proof valve, the explosion-proof valve is arranged on the pole. By setting the explosion-proof valve on the pole, the pole assembly can be used to connect with the tab of the battery as the electrode lead-out end of the battery, and the pole assembly can be used as an explosion-proof structure of the battery, so that The use function of the pole assembly is extended, thereby improving the use performance of the pole assembly. And because the explosion-proof valve is set on the pole, it is avoided to set the explosion-proof valve separately, which increases the production cost and difficulty of manufacturing and processing of the battery. Compared with setting the explosion-proof valve and the pole on the battery case separately, the installation of the integrated pole assembly is easier The utility model is convenient and efficient, and is not easy to cause damage to the battery casing, thereby improving the service performance of the pole assembly and improving the safety performance of the battery.

Description

Pole components and batteries

technical field

The utility model relates to the technical field of batteries, in particular to a pole assembly and a battery.

Background technique

In the related art, the pole assembly of the battery is used to connect with the tab of the battery cell as the electrode lead-out end of the battery, and the explosion-proof valve of the battery is used to realize the pressure relief protection of the battery, the pole assembly and the explosion-proof valve Being arranged on the same surface of the battery case is not only difficult to install, but also easily affects the strength of the battery case.

Utility model content

The utility model provides a pole component and a battery to improve the service performance of the pole component.

According to a first aspect of the present invention, a pole assembly is provided, comprising:

Pole;

Explosion-proof valve, the explosion-proof valve is arranged on the pole.

The pole assembly in one embodiment of the present invention includes a pole and an explosion-proof valve. By setting the explosion-proof valve on the pole, the pole assembly can be used to connect with the tab of the battery cell, and serve as the electrode of the battery. The terminal, and the pole assembly can be used as an explosion-proof structure of the battery, so as to expand the use function of the pole assembly, thereby improving the performance of the pole assembly. And because the explosion-proof valve is set on the pole, it is avoided to set the explosion-proof valve separately, which increases the production cost and difficulty of manufacturing and processing of the battery. Compared with setting the explosion-proof valve and the pole on the battery case separately, the installation of the integrated pole assembly is easier The utility model is convenient and efficient, and is not easy to cause damage to the battery casing, thereby improving the service performance of the pole assembly and improving the safety performance of the battery.

According to a second aspect of the present invention, a battery is provided, including the above pole assembly.

The pole assembly of the battery in one embodiment of the present invention includes a pole and an explosion-proof valve. By setting the explosion-proof valve on the pole, the pole assembly can be used to connect with the tabs of the battery core to serve as a battery The electrode lead-out end of the battery, and the pole assembly can be used as an explosion-proof structure of the battery, so as to expand the use function of the pole assembly, thereby improving the performance of the pole assembly. And because the explosion-proof valve is set on the pole, it is avoided to set the explosion-proof valve separately, which increases the production cost and difficulty of manufacturing and processing of the battery. Compared with setting the explosion-proof valve and the pole on the battery case separately, the installation of the integrated pole assembly is easier The utility model is convenient and efficient, and is not easy to cause damage to the battery casing, thereby improving the service performance of the pole assembly and improving the safety performance of the battery.

Description of drawings

For a better understanding of the present disclosure, reference may be made to the embodiments illustrated in the following figures. Components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. In addition, related elements or components may be arranged differently as known in the art. In addition, in the drawings, the same reference numerals denote the same or similar components in the respective drawings. in:

Fig. 1 is a schematic structural view of a pole assembly according to an exemplary embodiment;

Fig. 2 is a schematic cross-sectional structure diagram of a pole assembly according to an exemplary embodiment;

Fig. 3 is a schematic structural view of a battery according to an exemplary embodiment;

Fig. 4 is a schematic diagram showing an exploded structure of a battery according to an exemplary embodiment;

Fig. 5 is a partial cross-sectional structural schematic view of a battery according to an exemplary embodiment.

The reference signs are explained as follows:

10. Pole; 11. Notch; 12. First groove; 13. Second groove; 14. Reinforcement; 15. Flange; 20. Explosion-proof valve; 30. Battery case; 31. First Shell part; 32, second shell part; 40, current collecting part; 50, insulating part; 60, electric core.

detailed description

The following will clearly and completely describe the technical solutions in the exemplary embodiments of the present disclosure with reference to the accompanying drawings in the exemplary embodiments of the present disclosure. The exemplary embodiments described herein are for illustrative purposes only, and are not intended to limit the protection scope of the present disclosure, so it should be understood that various modifications can be made to the exemplary embodiments without departing from the protection scope of the present disclosure. modifications and changes.

In the description of the present disclosure, unless otherwise clearly specified and limited, the terms "first" and "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance; the term "plurality" is means two or more; the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, references to "the" or "an" are likewise intended to mean one of a possible plurality of such objects.

Unless otherwise specified or explained, the terms "connected" and "fixed" should be interpreted in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or integral connection, or electrical connection, or Connection; "connection" can be a direct connection or an indirect connection through an intermediary. Those skilled in the art can understand the specific meanings of the above terms in the present disclosure according to specific situations.

Furthermore, in the description of the present disclosure, it should be understood that the orientation words such as "upper", "lower", "inner" and "outer" described in the exemplary embodiments of the present disclosure are based on the angles shown in the drawings It should not be construed as limiting the example embodiments of the present disclosure. It also needs to be understood that in this context, when an element or feature is referred to as being "on," "under," or "inside" or "outside" another element(s), it is not only a direct connection In other (one or more) elements "on", "under" or "inside", "outside", it can also be indirectly connected to another (one or more) elements "on", "under" or "outside" through intermediate elements inside and outside".

An embodiment of the present invention provides a pole assembly. Please refer to FIG. 1 and FIG. 2 . The pole assembly includes: a pole 10 ;

The pole assembly of one embodiment of the present utility model includes a pole 10 and an explosion-proof valve 20. By setting the explosion-proof valve 20 on the pole 10, the pole assembly can be used to connect with the tab of the electric core, thereby As the electrode lead-out end of the battery, the pole assembly can be used as an explosion-proof structure of the battery, thereby expanding the function of the pole assembly. And because the explosion-proof valve 20 is arranged on the pole 10, it is avoided to set the explosion-proof valve 20 separately, which increases the production cost and the difficulty of manufacturing and processing of the battery. The installation of the pole assembly is more convenient and efficient, and it is not easy to cause damage to the battery case, thereby improving the performance of the pole assembly and improving the safety performance of the battery.

It should be noted that the pole assembly is used to be installed on the battery casing of the battery so as to be connected to the tab of the battery cell and used as an electrode lead-out end of the battery for charging and discharging of the battery. Further, the explosion-proof valve 20 is arranged on the pole 10, that is, when the internal pressure of the battery case is too high, the explosion-proof valve 20 can burst open, so as to release the internal pressure of the battery case, so as to achieve a pressure relief effect, thereby Ensure the safety performance of the battery. And because the pole assembly is integrated with the explosion-proof valve 20, after the pole assembly is installed on the battery case, compared with the related art, it is necessary to install the pole assembly and the explosion-proof valve on the battery case respectively. , can reduce the space occupancy rate of the pole assembly, so as to improve the integration degree of the battery.

The pole assembly can be a positive pole assembly, or the pole assembly can be a negative pole assembly, two of the above-mentioned pole assemblies can be installed on one battery, or one of the above-mentioned pole assemblies can be installed on one battery Assemblies, or, one battery can be installed with one above-mentioned pole assembly and one pole assembly in the related art.

The explosion-proof valve 20 of the pole assembly can be electrically connected to the cell, or the explosion-proof valve 20 of the pole assembly can be connected to the bus bar, that is, the explosion-proof valve 20 of the pole assembly can be used as a fuse structure of the battery. , to disconnect the electrical connection between the pole assembly and the battery cell in time, avoid abnormality of adjacent batteries, and improve battery safety performance. In one embodiment, the explosion-proof valve 20 and the pole 10 can be set separately, that is, the pole 10 can be provided with an explosion-proof hole, and the explosion-proof valve 20 is connected to the pole 10, so as to realize the shielding of the explosion-proof hole , the explosion-proof valve 20 includes a weak area, so that when the internal pressure of the battery casing reaches a preset value, the weak area bursts open to realize pressure relief.

In one embodiment, the explosion-proof valve 20 and the pole 10 are integrally formed, which not only has a simple structure, but also can reduce manufacturing processes, thereby improving the molding efficiency of the explosion-proof valve 20 .

The explosion-proof valve 20 is integrally formed with the pole 10 , for example, a part of the pole 10 can be thinned to form the explosion-proof valve 20 . Alternatively, the pole 10 can be partially thinned during the molding process, so as to serve as the explosion-proof valve 20 to realize the pressure relief function, and the process is relatively simple, so that the molding efficiency of the explosion-proof valve 20 can be improved.

In one embodiment, as shown in FIG. 1 and FIG. 2 , a notch 11 is provided on the pole 10 to form an explosion-proof valve 20 on the pole 10. Not only the molding process is simple, but also the explosion-proof valve 20 can be formed efficiently, so as to This meets the requirements of explosion protection, thereby achieving the effect of pressure relief.

It should be noted that the notch 11 may include at least one of a curve and a straight line, for example, the notch 11 may be circular, or the notch 11 may be elliptical and so on. The cross-section of the notch 11 may be rectangular, triangular, polygonal or arc-shaped, etc., which is not limited here.

In one embodiment, the pole 10 is used to form a first groove 12 on the side facing the battery, and the explosion-proof valve 20 forms at least part of the bottom wall of the first groove 12, that is, the connection between the pole 10 and the battery is formed. Afterwards, the first groove 12 can be located inside the battery, so that the first groove 12 can be used for gas collection, so as to ensure that the explosion-proof valve 20 can burst open in time.

The explosion-proof valve 20 may include a weak structure such as a notch 11, and the weak structure may be located on the bottom wall of the first groove 12, that is, the weak structure may be located on a side close to the battery core. Or the weak structure can be located on the other side away from the bottom wall of the first groove 12 , that is, the weak structure can be located on the other side away from the battery core.

In one embodiment, a second groove 13 is formed on the other side of the pole 10 away from the battery core, the first groove 12 is opposite to the second groove 13, and the explosion-proof valve 20 forms a bottom wall of the second groove 13. At least partially, the explosion-proof valve 20 is located inside the pole 10, so as to prevent the explosion-proof valve 20 from being damaged by the external structure, so as to ensure that the explosion-proof valve 20 can reliably realize the pressure relief protection function.

As shown in Figure 2, the pole 10 is formed with a through hole, and the explosion-proof valve 20 is arranged in the through hole, so that the second groove 13 and the first groove 12 are respectively formed on the upper and lower sides of the explosion-proof valve 20, so that the explosion-proof The valve 20 is located inside the pole 10 to prevent the explosion-proof valve 20 from being damaged, so as to ensure that the explosion-proof valve 20 can reliably realize the pressure relief protection function.

The second groove 13 of the explosion-proof valve 20 can be located on the outside of the battery, the first groove 12 of the explosion-proof valve 20 can be located on the inside of the battery, and the first groove 12 can be used to accommodate the gas inside the battery casing, that is, the first groove The groove 12 can be used as a gas collection space, thereby improving the gas storage capacity, so as to ensure that the explosion-proof valve 20 can burst open in time when the internal pressure of the battery reaches a preset value, thereby ensuring the safety performance of the battery.

In one embodiment, as shown in FIG. 2, the depth of the first groove 12 is greater than the depth of the second groove 13, that is, the space of the first groove 12 is larger, so that the first groove 12 can store enough The gas can explode in time when the internal pressure of the battery reaches the preset value, thus ensuring the safety performance of the battery.

In one embodiment, as shown in FIG. 2 , a reinforcing part 14 is provided on the pole 10, and the reinforcing part 14 is located on the side of the first groove 12 close to the explosion-proof valve 20; wherein, the reinforcing part 14 is connected to the explosion-proof valve 20 , the reinforcement part 14 can realize the strength protection of the explosion-proof valve 20, avoiding the accidental explosion of the explosion-proof valve 20, and the reinforcement part 14 can be used to strengthen the flow capacity of the pole 10, thereby improving the structural strength and Overcurrent capability, so as to improve the safety performance of the pole assembly.

In one embodiment, the explosion-proof valve 20 includes a weak part, and the reinforcement part 14 is arranged around the explosion-proof valve 20 and is spaced apart from the weak part, thereby preventing the reinforcement part 14 from affecting the explosion of the weak part, thereby improving the explosion-proof performance of the explosion-proof valve 20 Performance, and can make the reinforcing part 14 increase the structural strength and flow capacity of the pole assembly.

The pole assembly can be riveted with the battery case, and the setting of the reinforcing part 14 can prevent the structure of the explosion-proof valve 20 from being damaged when the pole 10 is flanged and riveted.

It should be noted that the explosion-proof valve 20 includes a weak portion. Further, the pole 10 can be provided with a notch 11, so that a weak portion can be formed on the explosion-proof valve 20, that is, a part of the explosion-proof valve 20 is thinned. Thus, a weak part is formed, so that the weak part can burst open in time when the internal pressure of the battery case reaches a preset value. In one embodiment, the explosion-proof valve 20 forms the fusing part of the pole assembly, that is, when the current or temperature on the pole assembly is too high, a part of the explosion-proof valve 20 can be fused, so that the current on the pole assembly is disconnected. , the pole assembly may be electrically connected to the battery through the explosion-proof valve 20, or the explosion-proof valve 20 may be connected to the bus bar. Alternatively, the electrical connection between the pole assembly and the battery cell may not be disconnected, but due to the fusing of the explosion-proof valve 20, the battery may also achieve rapid heat dissipation.

An embodiment of the present utility model also provides a battery, please refer to FIG. 1 to FIG. 5 , the battery includes the pole assembly mentioned above.

The pole assembly of the battery in one embodiment of the present invention includes a pole 10 and an explosion-proof valve 20. By arranging the explosion-proof valve 20 on the pole 10, the pole assembly can be used to connect with the tab of the cell. This is used as the electrode lead-out end of the battery, and the pole assembly can be used as an explosion-proof structure of the battery, thereby expanding the use function of the pole assembly. And because the explosion-proof valve 20 is arranged on the pole 10, it is avoided to set the explosion-proof valve 20 separately, which increases the production cost and the difficulty of manufacturing and processing of the battery. The installation of the pole assembly is more convenient and efficient, and it is not easy to cause damage to the battery case, thereby improving the performance of the pole assembly and improving the safety performance of the battery.

In one embodiment, as shown in FIG. 3 , the battery further includes a battery case 30, the pole 10 is arranged on the battery case 30, and the pole 10 is connected to the battery case 30 by riveting. The stability of the connection between the column 10 and the battery case 30 .

In one embodiment, as shown in FIG. 2 and FIG. 5 , one end of the pole 10 is formed with a flanging portion 15 , and the flanging portion 15 can be riveted with the battery case 30 to ensure that the pole 10 is connected to the battery case. 30% connection stability.

In one embodiment, as shown in FIG. 2, the reinforcing part 14 is located between the flange part 15 and the end of the bottom wall of the first groove 12, that is, the reinforcing part 14 can effectively protect the explosion-proof valve 20, avoiding The explosion-proof valve 20 is damaged during the connection process between the pole assembly and the battery case 30 .

Specifically, the pole 10 and the battery case 30 can be connected by flanging riveting. In the flanging riveting process, the pole 10 is formed with a flanging portion 15, and in the process of forming the flanging portion 15, if there is no Reinforcement 14, at this time, because the explosion-proof valve 20 has a weak area, such as the notch 11, it will cause the structural strength of the notch 11 to be further weakened. To realize the explosion-proof effect, thereby affecting the normal use of the battery, the reinforcing part 14 is arranged between the flange part 15 and the end of the bottom wall of the first groove 12, so that the reinforcing part 14 can be riveted in the flange of the pole 10 The explosion-proof valve 20 can be effectively protected during the process.

The reinforcement part 14 is located between the flange part 15 and the end of the bottom wall of the first groove 12 , that is, the explosion-proof valve 20 can be connected with the pole 10 through the reinforcement part 14 .

In one embodiment, the explosion-proof valve 20 forms a fuse part of the pole assembly, and when an abnormality occurs inside the battery, the pole assembly is disconnected from the battery cell in time to avoid abnormality of adjacent batteries and improve battery safety performance.

The explosion-proof valve 20 forms the fuse part of the pole assembly, that is, when the current on the pole assembly is too large, a part of the explosion-proof valve 20 can be fused, so that the current on the pole assembly is disconnected. At this time, the pole assembly can pass through the explosion-proof The valve 20 is electrically connected to the electric core, or the explosion-proof valve 20 may be connected to a busbar, and the busbar is used to realize the series or parallel connection of at least two batteries.

In one embodiment, the pole 10 and the battery case 30 are insulated. For example, an insulating member 50 may be provided between the pole 10 and the battery case 30 for insulation. As shown in FIG. 5 , the insulating member may be Rubber, plastic and other structures. Alternatively, at least one of the pole 10 and the battery case 30 may be provided with an insulating coating to achieve insulation between the pole 10 and the battery case 30, and the insulating coating may be aluminum oxide (Al ₂ O ₃ ), ceramic materials such as zirconia (ZrO ₂ ).

In one embodiment, as shown in FIG. 5 , the battery further includes a current collector 40 , the pole 10 is connected to the current collector 40 , further, the flange portion 15 of the pole 10 can be connected to the current collector 40 , that is, when the pole 10 is riveted, the current collector 40 can be clamped between the battery case 30 and the flange portion 15, and an insulating member 50 can be provided between the battery case 30 and the current collector 40 .

In one embodiment, as shown in FIG. 4 , the battery further includes an electric cell 60 disposed in the battery casing 30, and the electric cell 60 is connected to the pole 10 through the current collector 40, or, the electric cell 60 It can be directly connected with the pole 10.

It should be noted that the battery includes cells 60 and an electrolyte, the smallest unit capable of electrochemical reactions such as charging/discharging. The battery core refers to a unit formed by winding or laminating a stacked part, and the stacked part includes a first pole piece, a separator, and a second pole piece. When the first pole piece is a positive pole piece, the second pole piece is a negative pole piece. Wherein, the polarities of the first pole piece and the second pole piece can be interchanged. The first pole piece and the second pole piece are coated with active material.

The battery cell 60 may include a battery cell main body and a tab part. The battery cell main body includes a positive pole piece and a negative pole piece, and the pole part includes a positive pole tab and a negative pole tab. The opposite ends of the battery cell are respectively provided with two pole lugs, and the battery may further include two pole assemblies, and the two pole lugs may be respectively connected with the two pole assemblies. Alternatively, the battery can also include a pole assembly, and one of the two tabs can be connected to the pole assembly, and the other can be connected to the battery case 30 .

In one embodiment, the battery may be a prismatic battery.

The battery can be a stacked battery, which is not only convenient for grouping, but also can be processed to obtain a battery with a long length. Specifically, the electric core is a laminated electric core, and the electric core has a first pole piece stacked on each other, a second pole piece electrically opposite to the first pole piece, and a pole piece arranged between the first pole piece and the second pole piece. The separator sheet, so that multiple pairs of the first pole piece and the second pole piece are stacked to form a laminated battery cell.

Alternatively, the battery can be a wound battery, that is, the first pole piece, the second pole piece electrically opposite to the first pole piece, and the diaphragm sheet arranged between the first pole piece and the second pole piece are wound, Obtain a coiled battery.

In one embodiment, the battery may be a cylindrical battery. The battery can be a winding battery, that is, the first pole piece, the second pole piece electrically opposite to the first pole piece, and the diaphragm sheet arranged between the first pole piece and the second pole piece are wound to obtain a rolled battery. Winding core.

In one embodiment, as shown in FIG. 4, the battery case 30 includes a first case part 31; a second case part 32, and the second case part 32 is connected to the first case part 31 to seal the battery. core 60, so that reliable protection of the battery core 60 can be achieved.

The first case part 31 and the second case part 32 may both include a receiving space, and the first case part 31 and the second case part 32 are connected to form a space for accommodating the electric core 60 .

Alternatively, the first case part 31 is a cover plate, and the second case part 32 may include an accommodating space. After the first case part 31 and the second case part 32 are connected, a space for accommodating the electric core 60 is formed. The pole 10 can be disposed on the second housing member 32 , as shown in FIG. 4 .

It should be noted that the second housing part 32 may include a main body and a cover, the main body and the cover may be separate structures, the structure of the cover may be similar to the cover, and the cover may be connected to the cover relative settings. The main body and the cover can be connected by welding or other connection methods. Alternatively, the second housing part 32 may be an integral structure, which is not only simple to manufacture, but also relatively high in manufacturing efficiency, and can ensure reliable sealing performance.

An embodiment of the present invention also provides a battery pack, including the above-mentioned battery.

The battery pack of one embodiment of the present invention includes a battery, and the pole assembly of the battery includes a pole 10 and an explosion-proof valve 20. By setting the explosion-proof valve 20 on the pole 10, the pole assembly can be used for connection with the battery cell. The tabs are connected to serve as the electrode leads of the battery, and the pole assembly can be used as an explosion-proof structure of the battery, thereby expanding the use function of the pole assembly. And because the explosion-proof valve 20 is arranged on the pole 10, it is avoided to set the explosion-proof valve 20 separately, which increases the production cost and the difficulty of manufacturing and processing of the battery. The installation of the pole assembly is more convenient and efficient, and it is not easy to cause damage to the battery case, thereby improving the performance of the pole assembly and improving the safety performance of the battery pack.

In one embodiment, the battery pack is a battery module or a battery pack.

The battery module includes a plurality of batteries, which may be square batteries, and the battery module may also include end plates and side plates, which are used to fix the plurality of batteries. The battery can be a cylindrical battery, and the battery module can also include a bracket, and the battery can be fixed on the bracket.

The battery pack includes a plurality of batteries and a case body, and the case body is used to fix the plurality of batteries.

It should be noted that the battery pack includes batteries, and there may be multiple batteries, and the multiple batteries are arranged in the case. Wherein, a plurality of batteries can be installed in the casing after forming a battery module. Alternatively, a plurality of batteries can be directly arranged in the case, that is, it is not necessary to group the plurality of batteries, and the case is used to fix the plurality of batteries.

Other embodiments of the present disclosure will be readily apparent to those skilled in the art from consideration of the specification and practice of the utility model innovation disclosed herein. This disclosure is intended to cover any modification, use or adaptation of the present utility model, and these modifications, uses or adaptations follow the general principles of this disclosure and include common knowledge or conventional techniques in the technical field not disclosed in this disclosure means. The specification and example embodiments are to be considered as exemplary only, with the true scope and spirit of the disclosure indicated by the appended claims.

It should be understood that the present disclosure is not limited to the precise constructions which have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of protection of the present disclosure is limited only by the appended claims.

Claims (13)

1. A pole assembly, characterized in that, comprising: Pole (10); An explosion-proof valve (20), the explosion-proof valve (20) is arranged on the pole (10). 2. The pole assembly according to claim 1, characterized in that, the pole (10) is used to form a first groove (12) on the side facing the electric core, and the explosion-proof valve (20) is formed At least part of the bottom wall of the first groove (12). 3. The pole assembly according to claim 2, characterized in that a second groove (13) is formed on the other side of the pole (10) away from the battery core, and the first groove ( 12) Set opposite to the second groove (13), the explosion-proof valve (20) forms at least part of the bottom wall of the second groove (13). 4. The pole assembly according to claim 3, characterized in that, the depth of the first groove (12) is greater than the depth of the second groove (13). 5. The pole assembly according to claim 3, characterized in that, the pole (10) is provided with a reinforcing part (14), and the reinforcing part (14) is located in the first groove (12) Near the side of the explosion-proof valve (20); Wherein, the reinforcing part (14) is connected with the explosion-proof valve (20). 6. The pole assembly according to claim 5, characterized in that, the explosion-proof valve (20) includes a weakened portion, and the reinforcement portion (14) is arranged around the explosion-proof valve (20) and is spaced from the weakened portion set up. 7. The pole assembly according to any one of claims 1 to 6, characterized in that the explosion-proof valve (20) is integrally formed with the pole (10). 8. The pole assembly according to claim 7, characterized in that a notch (11) is provided on the pole (10) to form the explosion-proof valve (20) on the pole (10) ). 9. A battery, characterized by comprising the pole assembly according to any one of claims 1-8. 10. The battery according to claim 9, characterized in that, the battery further comprises a battery casing (30), the pole (10) is arranged on the battery casing (30), and the pole ( 10) Riveted connection with the battery case (30). 11. The battery according to claim 10, characterized in that, one end of the pole (10) is formed with a flanging portion (15), and the flanging portion (15) is connected to the battery case (30) riveted connection; Wherein, the reinforcing part (14) is located between the flange part (15) and the end of the bottom wall of the first groove (12). 12. The battery according to claim 9, characterized in that the explosion-proof valve (20) forms a fuse part of the pole assembly. 13. The battery according to any one of claims 9 to 12, wherein the battery is a cylindrical battery.

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