CN220233399U - Battery cover plate assembly, battery core and battery module - Google Patents

Abstract

The utility model provides a battery cover plate assembly, a battery core and a battery module, wherein the battery cover plate assembly comprises a cover plate with a cover plate positive pole and a cover plate negative pole, and a busbar; the busbar is two on locating apron positive pole and apron negative pole post respectively, and the one end of each busbar all has the through-hole that supplies apron positive pole or apron negative pole post to pass, and the busbar can rotate with apron positive pole or apron negative pole post as the center, and makes the other end of busbar adjust to different positions. The battery cover plate assembly is characterized in that the bus bar is arranged on the cover plate in a rotating way, so that the mounting direction of the bus bar can be adjusted conveniently, the serial-parallel connection of a plurality of batteries is realized conveniently, the bus bar and the cover plate are integrated into a whole, the process time is shortened, the bus bar positioning tool is saved, the production cost is reduced, and the battery cover plate assembly has a good use effect.

Description

Battery cover components, battery cells and battery modules

Technical field

The utility model relates to the technical field of power battery components, in particular to a battery cover assembly. The utility model also relates to a battery core provided with the battery cover assembly and a battery module provided with the battery core.

Background technique

As a common energy storage device, lithium batteries have been widely used in electric vehicle energy supply systems. During the assembly process of automotive lithium batteries, it is often necessary to connect the cells in series/parallel through busbars to assemble them into modules and battery packs.

In the existing technology, during the assembly process of lithium batteries, the busbar is a separate part and needs to be laser welded with the battery to achieve electrical connection between the batteries. During the busbar assembly process, additional materials are required, as well as supporting mechanisms or fixtures and other equipment for positioning, which increases operating procedures, invests in additional equipment funds, and occupies a larger space.

Utility model content

In view of this, the present utility model aims to provide a battery cover assembly that facilitates adjusting the installation direction of the bus bar, shortening the process time, and improving assembly efficiency.

In order to achieve the above purpose, the technical solution of the present invention is achieved as follows:

A battery cover assembly, including a cover with a positive pole of the cover and a negative pole of the cover, and a bus bar;

The bus bars are two respectively provided on the positive pole of the cover plate and the negative pole of the cover plate. One end of each bus bar has a hole for the positive pole of the cover plate or the negative pole of the cover plate to pass through. through the through hole, and the bus bar can be rotated around the positive pole of the cover plate or the negative pole of the cover plate, so that the other end of the bus bar can be adjusted to different positions.

Further, the bus bar has a plate-shaped first connecting end and a second connecting end; the through hole is formed on the first connecting end, and the first connecting end and the second connecting end Connected by a middle bulge.

Further, the length L1 of the first connecting end is greater than the length L2 of the second connecting end.

Further, the positive pole of the cover plate is provided with a first limiting portion for limiting the protrusion of the bus bar; and/or the negative pole of the cover plate is provided with a second limiting portion for limiting the protrusion of the bus bar. bit part.

Further, the first limiting part includes a first limiting ring formed on the end of the positive pole of the cover plate; and/or, the second limiting part includes a first limiting ring formed on the end of the negative pole of the cover plate. The second limiting ring at the bottom.

Further, a first fixing member is provided on the cover plate, and one end of the first fixing member passes through the first pole fixing hole formed on the cover plate and is connected with the first fixing member located on one side of the cover plate. The positive pole of the cover plate is fixedly connected; and/or the cover plate is provided with a second fixing piece, and one end of the second fixing piece passes through the second pole fixing hole formed on the cover plate, And is fixedly connected to the negative pole of the cover plate located on one side of the cover plate.

Further, a first insulating member is disposed between the positive electrode column of the cover plate and the cover plate, and between the first fixing member and the cover plate, and between the negative electrode column of the cover plate and the cover plate. A second insulating member is provided between the second fixing member and the cover plate.

Further, a first positioning structure is provided between the bus bar and the positive electrode column of the cover plate; and/or a second positioning structure is provided between the bus bar and the negative electrode column of the cover plate.

Compared with the existing technology, this utility model has the following advantages:

The battery cover assembly of the present utility model can facilitate the adjustment of the installation direction of the bus bar by rotating the bus bar on the cover plate, facilitate the series and parallel connection of multiple batteries, and integrate the bus bar and the cover plate on the cover plate. The integrated structural design can also shorten the process time, save busbar positioning tooling, and also help reduce production costs, and has good use effects.

In addition, the bus bar includes a plate-shaped first connecting end and a second connecting end, and the first connecting end and the second connecting end are connected through an intermediate protrusion, so that the structure of the bus bar is simple, and the arrangement of the intermediate protrusion , which can cause slight deformation of the bus bar and ensure the reliability of the electrical connection at both ends of the bus bar. Providing the length of the first connection end to be greater than the length of the second connection end facilitates the arrangement of the through holes on the first connection end and facilitates the reliability of the electrical connection of the second connection end.

Secondly, the provision of the first limiting part can prevent the bus bar from coming out of the positive pole of the cover plate. The provision of the second limiting part can prevent the bus bar from coming out of the negative pole of the cover, and also helps improve assembly efficiency. The arrangement of the first fixing member is conducive to ensuring the connection effect between the positive pole of the cover plate and the cover plate, making the connection between the positive pole of the cover plate and the cover plate more reliable. The arrangement of the second fixing member is conducive to ensuring the connection effect between the negative electrode column of the cover plate and the cover plate, making the connection between the negative electrode column of the cover plate more reliable. The arrangement of the first positioning structure and the second positioning structure is conducive to positioning the position of the bus bar after rotation, and ensures the stability of the adjusted position of the bus bar.

In addition, the arrangement of the first insulating member can ensure the safety of use of the cover assembly and prevent short circuit of the positive pole of the cover. The arrangement of the second insulating member is also conducive to ensuring the safety of use of the cover assembly and preventing the negative pole of the cover from short circuiting.

Another object of the present invention is to provide a battery core having a battery cover assembly as described above.

In addition, the utility model also provides a battery module, which is provided with the above-mentioned battery core.

The battery cells and battery modules of the present invention and the battery cover assembly as described above have the same beneficial effects as those of the prior art, and will not be described again here.

Description of the drawings

The drawings that constitute a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In the attached picture:

Figure 1 is a schematic structural diagram of a battery cover assembly according to an embodiment of the present invention;

Figure 2 is a partial cross-sectional view of the battery cover assembly according to the embodiment of the present invention;

Figure 3 is a schematic structural diagram of a busbar according to an embodiment of the present utility model;

Figure 4 is a schematic structural diagram of the battery core according to the embodiment of the present invention from a first perspective;

Figure 5 is a schematic structural diagram of the battery core according to the embodiment of the present invention from a second perspective;

Figure 6 is a schematic structural diagram of the battery core according to the embodiment of the present invention from a third perspective;

Figure 7 is a schematic structural diagram of the battery core according to the embodiment of the present invention from a fourth perspective;

Figure 8 is a schematic structural diagram of the battery module according to the embodiment of the present invention from a first perspective;

Figure 9 is a schematic structural diagram of the battery module according to the embodiment of the present invention from a second perspective;

Explanation of reference symbols:

1. Cover; 101. Positive pole of the cover; 102. Negative pole of the cover; 103. Second fixing piece; 104. Second insulating piece; 1010. Positioning groove; 1011. Second limiting ring;

2. Bus bar; 200, through hole; 201, first connection end; 202, second connection end; 203, middle protrusion; 2010, positioning protrusion;

3. Shell; 10. Battery core.

Detailed ways

It should be noted that, as long as there is no conflict, the embodiments and features of the embodiments of the present invention can be combined with each other.

In the description of the present invention, it should be noted that if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer" appear, they are based on the orientation or position shown in the drawings. The relationship is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, if terms such as “first” and “second” appear, they are used for descriptive purposes only and shall not be understood as indicating or implying relative importance.

In addition, in the description of the present utility model, unless otherwise explicitly limited, the terms "installation", "connection", "connection" and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or it can be an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be internal to two components. Connected. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood based on specific circumstances.

The utility model will be described in detail below with reference to the accompanying drawings and embodiments.

Embodiment 1

This embodiment relates to a battery cover assembly, which facilitates adjusting the installation direction of the busbar 2, shortening the process time, and improving assembly efficiency.

In terms of the overall structure, as shown in FIGS. 1 to 3 , the battery cover assembly of this embodiment mainly includes a cover 1 with a cover positive pole 101 and a cover negative pole 102 , and a busbar 2 . Among them, there are two busbars 2 respectively provided on the cover positive pole 101 and the cover negative pole 102. One end of each busbar 2 has a through hole for the cover positive pole 101 or the cover negative pole 102 to pass through. 200, and the busbar 2 can rotate around the cover positive pole 101 or the cover negative pole 102, so that the other end of the busbar 2 can be adjusted to different positions.

In the above structure, by rotating the bus bar 2 on the cover plate 1, the installation direction of the bus bar 2 can be adjusted to facilitate the series-parallel connection of multiple batteries, and the bus bar 2 and the cover plate 1 can be integrated into one The structural design can also shorten the process time, improve assembly efficiency, and save busbar 2 positioning tooling, which helps reduce production costs.

Specifically, as shown in FIGS. 1 to 3 , the cover plate 1 has a cover plate positive pole 101 and a cover plate negative pole 102 , and the cover plate positive pole 101 and the cover plate negative pole 102 are both provided with busbars 2 for rotation. In terms of specific structure, one end of each busbar 2 has a through hole 200, which is used for the cover positive pole 101 or the cover negative pole 102 to pass through, and each busbar 2 can correspond to the cover positive pole. The column 101 or the cover plate negative column 102 is rotated as a center, so that the other end of the busbar 2 can be adjusted to different positions.

Referring to FIG. 3 , in this embodiment, the busbar 2 has a plate-shaped first connection end 201 and a second connection end 202 . The first connection end 201 is formed with the above-mentioned through hole 200 , and the first connection end 201 and the second connection end 202 are connected through the middle protrusion 203 . The plate-shaped first connecting end 201 and the second connecting end 202 are connected together through the middle protrusion 203, which makes the structure of the bus bar 2 simple, and the arrangement of the middle protrusion 203 can cause the bus bar 2 to produce slight deformation. , ensuring the reliability of the electrical connection at both ends of the bus 2.

As a preferred implementation, in this embodiment, as shown in FIG. 3 , the length L1 of the first connection end 201 is greater than the length L2 of the second connection end 202 . Setting the length of the first connection end 201 to be greater than the length of the second connection end 202 not only facilitates the arrangement of the through holes 200 on the first connection end 201 , but also facilitates the reliability of the electrical connection of the second connection end 202 .

In this embodiment, the positive pole 101 of the cover is provided with a first limiter for restricting the busbar 2 from coming out, and the negative pole 102 of the cover is also provided with a second limiter for restricting the busbar 2 from coming out. department. The provision of the first limiting portion can prevent the bus bar 2 from coming out of the positive pole 101 of the cover plate. The arrangement of the second limiting part can prevent the bus bar 2 from coming out of the negative pole 102 of the cover, and the arrangement of the first limiting part and the second limiting part enables the bus bar 2 to be better connected to the cover. on board 1, which is beneficial to improving assembly efficiency.

Specifically, as shown in FIG. 3 , the first limiting part includes a first limiting ring formed at the end of the positive pole 101 of the cover plate. The second limiting part includes a second limiting ring 1011 formed at the end of the negative pole 102 of the cover plate. In the specific implementation, the busbar 2 is pre-set on the cover plate positive pole 101 and the cover plate negative pole 102, and then the ends of the cover plate positive pole 101 and the cover plate negative pole 102 are pressed out for the first time by pressing equipment. The limit stop ring and the second limit stop ring 1011 are such that the first limit stop ring and the second limit stop ring 1011 can prevent the installed busbar 2 from coming out of the cover positive pole 101 or the cover negative pole 102 .

In addition, in this embodiment, the cover plate 1 is provided with a first fixing piece. One end of the first fixing piece passes through the first pole fixing hole formed on the cover plate 1 and is connected with the cover located on one side of the cover plate 1 . The plate positive pole 101 is firmly connected. Preferably, the cover plate 1 is also provided with a second fixing member 103. One end of the second fixing member 103 passes through the second pole fixing hole formed on the cover plate 1 and is connected with the second fixing member 103 located on one side of the cover plate 1. The cover plate negative pole 102 is fixedly connected. The arrangement of the first fixing part and the second fixing part 103 is beneficial to ensure the connection effect between the positive electrode post 101 of the cover plate and the cover plate 1, and between the negative electrode post 102 of the cover plate and the cover plate 1, so that the bus bar 2 The connection with the positive electrode post 101 of the cover plate and the bus bar 2 with the negative electrode post 102 of the cover plate is more reliable.

In addition, in this embodiment, as a preferred implementation, a first insulating member is provided between the cover plate positive pole 101 and the cover plate 1, and between the first fixing member and the cover plate 1. The arrangement of the first insulator can ensure the safety of use of the cover assembly and prevent the cover positive pole 101 from short circuiting. Moreover, as a preferred embodiment, a second insulating member 104 is also provided between the cover plate negative pole 102 and the cover plate 1 and between the second fixing member 103 and the cover plate 1 . The arrangement of the second insulator 104 is also beneficial to ensuring the safety of the cover assembly and preventing the cover negative pole 102 from short circuiting.

It should be noted that in this embodiment, in addition to the first limiting portion and the second limiting portion being provided correspondingly on both the cover positive pole 101 and the cover negative pole 102, they can also be provided only on the cover positive pole 101. A first limiting part is provided on the cover plate, or a second limiting part is provided only on the negative pole 102 of the cover plate. In addition, in addition to providing both the first fixing part and the second fixing part 103 on the cover plate 1 , only the first fixing part or only the second fixing part 103 may be provided on the cover plate 1 , which is also feasible.

The battery cover assembly of this embodiment will be described in detail below, taking the connection between the cover negative pole 102 and the busbar 2 as an example. As shown in Figure 3, the negative pole post 102 of the cover plate 1 passes through the through hole 200 on the bus bar 2, and the bus bar 2 is fixed on the negative pole post 102 of the cover plate through the second limiting ring 1011. . One end of the second fixing member 103 provided on the cover 1 passes through the second pole fixing hole formed on the cover 1 and is fixedly connected to the cover negative pole 102 located on one side of the cover 1 . In addition, a second insulating member 104 is provided between the second fixing member 103 and the cover plate 1 , and between the cover plate 1 and the cover plate negative pole 102 .

It is worth mentioning here that in this embodiment, the first fixing part and the second fixing part 103 are preferably riveted posts, and the material of the riveted posts is the same as the material of the corresponding connected poles.

In addition, as a preferred implementation of this embodiment, in this embodiment, a first positioning structure is provided between the bus bar 2 and the cover plate positive pole 101, and between the bus bar 2 and the cover plate negative pole 102 A second positioning structure is provided. As shown in Figure 2 in conjunction with Figures 6 and 7, a positioning protrusion 2010 is provided on the side of the busbar 2 facing the cover plate 1. Corresponding to the positioning protrusion 2010, the cover plate positive pole 101 and the cover plate negative pole are The posts 102 are also provided with positioning grooves 1010 . Among them, the positioning protrusion 2010 formed on the bus bar 2 and the positioning groove 1010 formed on the cover plate positive pole 101 constitute the above-mentioned first positioning structure. The positioning groove 1010 on the negative pole 102 of the cover plate constitutes the above-mentioned second positioning structure.

Through the arrangement of the first positioning structure and the second positioning structure, the cooperation between the positioning protrusion 2010 and the positioning groove 1010 is beneficial to positioning the position of the bus bar 2 after rotation. In this embodiment, the first positioning structure and In the second positioning structure, the number of positioning protrusions 2010 and positioning grooves 1010 is four at intervals, that is, as shown in the figure, it is possible to achieve a positioning state in which the bus bar 2 is parallel or perpendicular to the large surface of the battery. .

The battery cover assembly of this embodiment not only facilitates the adjustment of the installation direction of the bus bar 2 and facilitates the series-parallel connection of multiple batteries, but also allows the structural design of the bus bar 2 and the cover plate 1 to be integrated into one body, which can also shorten the process time. , improve assembly efficiency, and at the same time, it can also save busbar 2 positioning tooling, reduce production costs, and have good use effects.

Embodiment 2

This embodiment relates to a battery core 10, which has the battery cover assembly of Embodiment 1. Referring to FIGS. 4 to 7 , the battery core 10 has a casing 3 for accommodating positive electrode sheets and negative electrode sheets. The battery cover assembly of Embodiment 1 is covered on the top of the casing 3 .

The battery cell 10 of this embodiment adopts the battery cover assembly of the first embodiment, which facilitates the adjustment of the installation direction of the busbar 2, facilitates the series-parallel connection of multiple batteries, and also helps shorten the assembly process time of the battery cell 10 and improve the battery life. Assembly efficiency of core 10.

At the same time, this embodiment also relates to a battery module, including the above-mentioned battery core 10 in the battery module. In terms of specific structure, as shown in Figures 8 and 9, the battery module includes a plurality of stacked cells 10. During specific implementation, the position of each busbar 2 is adjusted according to the requirements of the series and parallel connection of the cells 10. After the positioning of the bus bar 2 on the battery core 10 is completed, in order to ensure overcurrent, the bus bar 2 and the cover plate positive pole 101, as well as the bus bar 2 and the cover plate negative pole 102 are laser welded. The welding position can be on the bus bar 2 Welding is performed on the riveting position of the pole, and the welding track can be circular. Of course, the welding position can be in the middle of the busbar 2, and the welding track can be circular or rectangular.

The battery module of this embodiment has the same beneficial effects as the battery cell 10 described above, which will not be described again here.

The above descriptions are only preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in within the protection scope of this utility model.

Claims (10)

1. A battery cover plate assembly, characterized in that:

the bus bar comprises a cover plate with a cover plate positive pole and a cover plate negative pole;

the busbar is two on locating respectively apron positive pole and the apron negative pole post, and each the one end of busbar all has the confession the apron positive pole or the through-hole that the apron negative pole post passed, just the busbar can use apron positive pole or the apron negative pole post is the center rotation, and makes the other end of busbar adjusts to different positions.

2. The battery cover assembly of claim 1, wherein:

the busbar is provided with a first connecting end and a second connecting end which are plate-shaped;

the through hole is formed on the first connecting end, and the first connecting end is connected with the second connecting end through the middle bulge.

3. The battery cover assembly of claim 2, wherein:

the length L1 of the first connecting end is greater than the length L2 of the second connecting end.

4. The battery cover assembly of claim 1, wherein:

a first limiting part for limiting the busbar from falling off is arranged on the positive pole of the cover plate; and/or the number of the groups of groups,

and a second limiting part for limiting the busbar from falling off is arranged on the cover plate negative pole column.

5. The battery cover assembly of claim 4, wherein:

the first limiting part comprises a first limiting baffle ring formed at the end part of the positive pole of the cover plate; and/or the number of the groups of groups,

the second limiting part comprises a second limiting baffle ring formed at the end part of the negative pole column of the cover plate.

6. The battery cover assembly of claim 1, wherein:

the cover plate is provided with a first fixing piece, and one end of the first fixing piece penetrates through a first pole fixing hole formed in the cover plate and is fixedly connected with the cover plate positive pole located on one side of the cover plate; and/or the number of the groups of groups,

the cover plate is provided with a second fixing piece, and one end of the second fixing piece penetrates through a second pole fixing hole formed in the cover plate and is fixedly connected with the cover plate negative pole located on one side of the cover plate.

7. The battery cover assembly of claim 6, wherein:

a first insulating part is arranged between the positive pole of the cover plate and between the first fixing part and the cover plate;

and a second insulating part is arranged between the cover plate negative pole column and the cover plate and between the second fixing part and the cover plate.

8. The battery cover assembly of any one of claims 1-7, wherein:

a first positioning structure is arranged between the busbar and the positive pole of the cover plate; and/or a second positioning structure is arranged between the busbar and the cover plate negative pole column.

9. The utility model provides an electric core which characterized in that:

the cell having the battery cover assembly of any one of claims 1-8.

10. A battery module, characterized in that:

the battery module is provided with the electric core as claimed in claim 9.