CN217009507U

CN217009507U - Battery module output pole and battery module

Info

Publication number: CN217009507U
Application number: CN202220647953.7U
Authority: CN
Inventors: 薛晨; 亢策策; 徐跃章
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2022-03-23
Filing date: 2022-03-23
Publication date: 2022-07-19
Anticipated expiration: 2032-03-23

Abstract

The utility model discloses a battery module output pole and a battery module, wherein the battery module output pole comprises: multistage copper bar and fusing structure. The fusing structure is electrically connected between two adjacent sections of the copper bars. This battery module output electrode has the fusing structure, can self take place the fusing when the external short circuit takes place for the battery module to form the open circuit, thereby avoided the battery module to take place the thermal runaway phenomenon, in order to further improve the security of battery module.

Description

Battery module output pole and battery module

Technical Field

The utility model relates to the technical field of power batteries, in particular to a battery module output electrode and a battery module.

Background

The battery module output of traditional battery module is very a monoblock copper bar, and when taking place outside short circuit, a monoblock copper bar is difficult for taking place the fusing, leads to the electric core in the battery module easily to take place the thermal runaway phenomenon, influences the security of battery module and battery package, has the improvement space.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention is directed to a battery module output electrode, which can effectively prevent the thermal runaway phenomenon of the battery module, so as to further improve the safety of the battery module.

In order to achieve the purpose, the technical scheme of the utility model is realized as follows:

a battery module output electrode, comprising: a plurality of sections of copper bars; and the fusing structure is electrically connected between the two adjacent sections of the copper bars.

Further, the fuse structure includes: and (5) tin bars.

Furthermore, a plurality of tin bars are electrically connected between the two adjacent sections of the copper bars and are spaced from each other.

Furthermore, the plurality of tin bars are arranged in parallel.

Furthermore, the tin bars are arranged at equal intervals.

Furthermore, three tin bars are connected between two adjacent sections of the copper bars.

Furthermore, the copper bar is divided into two sections, and a plurality of tin bars are connected between the two sections of copper bar.

Further, the fuse structure includes: a lead-antimony-tin alloy strip.

Further, the fusing structure is welded between the two adjacent sections of the copper bars.

Compared with the prior art, the battery module output pole has the following advantages:

the battery module output electrode provided by the utility model is provided with the fusing structure, and can be fused when the battery module is subjected to external short circuit so as to form a circuit break, so that the thermal runaway phenomenon of the battery module is avoided, and the safety of the battery module is further improved.

Another objective of the present invention is to provide a battery module including the above-mentioned battery module output electrode, which has better safety.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 is a partial structural view of a battery module according to an embodiment of the present invention;

fig. 2 is an exploded view of a partial structure of a battery module according to an embodiment of the present invention.

Description of reference numerals:

100-output electrode of battery module, 1-output electrode copper bar, 2-cell connecting copper bar, 3-tin bar, 201-cell, 202-bracket.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

A battery module output electrode 100 according to an embodiment of the present invention will be described below with reference to fig. 1 to 2.

The battery module output electrode 100 according to an embodiment of the present invention may include: copper bar and fusing structure.

As shown in fig. 1 and 2, the battery module output electrode 100 is adapted to be electrically connected to a wire harness in a battery pack, so that electric energy of a plurality of battery modules can be collected and output to the outside of the battery pack through the wire harness and a battery pack terminal. Because the very monoblock copper bar of battery module output on traditional battery module, when taking place outside short circuit, a monoblock copper bar is difficult for taking place the fusing, leads to the electric core in the battery module easily to take place the thermal runaway phenomenon, influences the security of battery module and battery package.

Therefore, the embodiment of the utility model designs the battery module output electrode 100 which is easy to melt when the external short circuit occurs to the battery module. From this, protection battery module that can be better to improve the security of battery module and battery package.

Wherein, the copper bar is multistage. That is, it is not a single piece of copper bar. Further, the fusing structure is electrically connected between two adjacent sections of copper bars. In other words, two adjacent sections of copper bars are electrically connected together through the fusing structure to realize effective electric conduction. Wherein, the fusing structure is metal construction, has conductive property, and the melting point of fusing structure is lower, when the external short circuit takes place at the battery module, the temperature of whole battery module output utmost point 100 all can rise rapidly, because the melting point of copper bar is higher, can not produce too much influence to the copper bar, and the melting point of fusing structure is lower, when the temperature risees to the certain extent, the fusing structure will fuse, so that two adjacent sections copper bars break off each other, thereby form and break circuit, before taking place the thermal runaway in order to guarantee battery module's electric core 201, can break off in battery module output utmost point 100 department, in order to avoid electric core 201 further to damage, thereby the effectual battery module that has protected.

And in the transportation of battery module, need not to increase corresponding insurance structure on the transportation frock moreover to can effectual reduction cost of transportation, with the fail safe nature of effectively having guaranteed the product in the transportation.

According to the battery module output electrode 100 of the embodiment of the utility model, the battery module output electrode 100 is provided with the fusing structure, and can be fused when the external short circuit occurs to the battery module, so that the open circuit is formed, the thermal runaway phenomenon of the battery module is avoided, and the safety of the battery module is further improved.

With reference to the embodiments shown in fig. 1 and 2, the fuse structure includes: and (3) a tin bar. Tin bar 3 is for the lamellar structure of making through processing with metallic tin, and the melting point is lower, and easy fusing, and connect between the copper bar more easily, and electric conductivity is better, and the cost is also lower, can effectual reduction battery module's cost.

According to some embodiments of the present invention, referring to fig. 1 and fig. 2, a plurality of tin bars 3 are electrically connected between two adjacent segments of copper bars, and the tin bars 3 are spaced apart from each other, so as to ensure the connection strength and the electrical conductivity between two adjacent segments of copper bars when no external short circuit occurs, and to make the two adjacent segments of copper bars more easily disconnected when the external short circuit occurs. That is to say, if adopt the great tin bar 3 of a monoblock to connect two sections adjacent copper bars, then tin bar 3 is difficult for fusing in the short time, leads to fusing reaction slower, easily causes the battery module to take place thermal runaway, consequently, adopts many relatively narrower tin bars 3, can avoid the emergence of above-mentioned phenomenon.

Further, parallel arrangement between many tin strips 3 to avoid taking place electric connection each other between many tin strips 3 and cause the phenomenon of short circuit, thereby ensured the overall stability of circuit and the security of battery module.

Still further, equidistant setting between many tin bars 3 to guarantee that the atress homogeneous phase of every tin bar 3 equals, avoid when buckling tin bar 3 or installation battery module output utmost point 100, the atress is uneven between the tin bar 3 and the 3 great damage that cause of a certain tin bar 3 atress that lead to, thereby ensured the connection stability between two sections adjacent copper bars.

As a preferred embodiment, as shown in fig. 1 and fig. 2, three tin bars 3 are connected between two adjacent copper bars, and the three tin bars 3 are distributed at equal intervals and respectively connected between two adjacent copper bars.

According to some embodiments of the present invention, the copper bar is two segments, and the plurality of tin bars 3 are connected between the two segments of the copper bar. Wherein, two sections copper bars are respectively for fixing on support 202 and the output that is connected with the pencil utmost point copper bar 1 and the electric core that is connected with electric core 201 is connected copper bar 2, many tin bars 3 (for example, three) are connected between output utmost point copper bar 1 and electric core connection copper bar 2, thereby copper bar → tin bar 3 → copper bar → electric core 201's structural style has been formed, when the external short circuit takes place for the battery module, tin bar 3 can be fast in electric core 201 fusing, in order to protect electric core 201, avoid it to take place thermal runaway, not only can practice thrift the arrangement space, and do not influence the normal assembly of battery module, can also effectively practice thrift the cost.

As a preferred embodiment, the fusing structure includes: a lead-antimony-tin alloy strip. The lead-antimony-tin alloy strip can also realize effective electric conduction and fusing functions.

According to some embodiments of the utility model, the fusing structure is welded between two adjacent sections of copper bars, so that the processing is more convenient, the connection process is simpler, the structural stability is better, and redundant fasteners are not required to be used, so that the overall manufacturing cost of the battery module is effectively reduced. For example, the lead-tin bar 3 is easier to weld between two adjacent sections of copper bars, so that the welding spot is brighter and fuller, and the bad phenomena such as insufficient welding and the like can be avoided.

A battery module according to another aspect of the embodiment of the present invention includes the battery module output electrode 100 described in the above embodiment. Other constructions and the like of the battery module are well known to those skilled in the art and thus, will not be described in detail herein.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A battery module output electrode (100), comprising:

a plurality of sections of copper bars;

and the fusing structure is electrically connected between two adjacent sections of the copper bars.

2. The battery module output pole (100) according to claim 1, wherein the fusing structure comprises: a tin bar (3).

3. The battery module output electrode (100) according to claim 2, wherein a plurality of tin bars (3) are electrically connected between two adjacent sections of the copper bars, and the tin bars (3) are spaced from each other.

4. The battery module output electrode (100) according to claim 3, wherein the plurality of tin bars (3) are arranged in parallel.

5. The battery module output electrode (100) according to claim 4, wherein the plurality of tin bars (3) are arranged at equal intervals.

6. The battery module output electrode (100) according to claim 5, wherein three tin bars (3) are connected between two adjacent copper bars.

7. The battery module output electrode (100) according to claim 5, wherein the copper bar is two segments, and the plurality of tin bars (3) are connected between the two segments of the copper bar.

8. The battery module output electrode (100) according to claim 1, wherein the fusing structure comprises: a lead-antimony-tin alloy strip.

9. The battery module output electrode (100) according to claim 1, wherein the fusing structure is welded between two adjacent segments of the copper bars.

10. A battery module, characterized by comprising a battery module output electrode (100) according to any one of claims 1 to 9.