CN216958418U - Bus bar structure and module for battery - Google Patents

Abstract

The utility model relates to the technical field of batteries, specifically disclose a busbar structure and module for battery, this busbar structure for battery includes battery and busbar, and the battery includes the body and sets up utmost point post on the body, and the busbar includes two first connecting plates and first bolster, is provided with cooperation portion on the first connecting plate, cooperation portion be used for with the cooperation of the lateral wall face of utmost point post, first bolster sets up between two first connecting plates. Through the cooperation portion of busbar and the side wall face cooperation of the utmost point post of battery, realize electric connection, when the battery module that connects into different models as needs, can directly connect through the busbar, realize that the battery module material to different models is general, reduce battery module material kind, reduce cost, improvement production efficiency.

Description

Bus bar structure and module for battery

Technical Field

The present application generally relates to the field of battery technology, and more particularly, discloses a bus bar structure and a module for a battery.

Background

The battery pack is a device which converts electric energy into chemical energy and converts the chemical energy into electric energy to supply power to electronic equipment at the moment when the electric energy is needed. Namely, the battery pack can realize charging and discharging. With the rapid growth of mobile electronic devices, the demand for battery packs has increased rapidly, and more battery packs have been researched and applied. The battery pack comprises a plurality of superposed battery cores, the battery cores are connected through busbars, one busbar is adopted by each type of battery pack, and the battery pack has the advantages of more purchased materials, high cost and low production efficiency.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem that the application range of the bus bar in the prior art is small, the application provides a bus bar structure and a module for a battery.

In order to realize the purpose of the utility model, the following technical scheme is adopted in the application:

according to a first aspect of embodiments of the present application, there is provided a bus bar structure for a battery,

the battery comprises a body and a pole arranged on the body;

the bus bar includes:

the first connecting plates are provided with matching parts, and the matching parts are used for being matched with the side wall surfaces of the poles; and

the first buffer piece is arranged between the two first connecting plates.

According to an embodiment of the present application, wherein the pole comprises:

the first part comprises a first wall surface and a second wall surface which are oppositely arranged, and the first wall surface is connected with the body; and

a second portion provided on the second wall surface, a peripheral side of the second portion being a third wall surface; the fitting portion is connected to the second wall surface and/or the third wall surface.

According to an embodiment of the application, the first portion is based on an orthographic projection of the body completely covers the second portion is based on an orthographic projection of the body, and a distance exists between an edge of the second portion and an edge of the first portion.

According to an embodiment of the present application, wherein a thickness of the first connecting plate is less than or equal to a height of the second portion.

According to an embodiment of the present application, the engaging portion includes a first connecting surface, and the first connecting surface is an arc surface engaged with the third wall.

According to an embodiment of the present application, the first connection surface is a slope, and the first connection surface gradually gets away from the central axis of the body in the radial direction of the body.

According to an embodiment of the present application, the engaging portion further includes a second connecting surface connected to the first connecting surface, and the second connecting surface is disposed on a side of the first connecting surface close to the body.

According to an embodiment of the present application, the first buffer member is a convex or concave arc structure.

According to a second aspect of the embodiments of the present application, there is provided a module including the above bus bar structure for battery cells, wherein a plurality of battery cells are provided, and adjacent battery cells are connected through the bus bar; the module still includes:

each battery is positioned between the two end plates, and a lead-out row is arranged between each end plate and the adjacent battery;

an insulator disposed between the end plate and the battery; and

a connector for connecting the end plate with the plurality of cells.

According to an embodiment of the present application, wherein the module further comprises an auxiliary row, the auxiliary row comprising:

the two second connecting plates are used for being matched with one side of the pole, which is far away from the body, and through holes are formed in the second connecting plates; and

and the second buffer piece is arranged between the two second connecting plates.

According to the technical scheme, the advantage and the positive effect that a busbar structure and module for battery of this application lie in: the embodiment of the disclosure provides a bus bar structure and a module for a battery, wherein the bus bar structure for the battery comprises the battery and a bus bar, and the battery comprises a body and a pole arranged on the body; the busbar includes two first connecting plates and first bolster, be provided with cooperation portion on the first connecting plate, cooperation portion be used for with the cooperation of the side wall face of utmost point post, first bolster sets up in two between the first connecting plate. To sum up, through the cooperation portion of busbar and the side wall face cooperation of the utmost point post of battery, realize electric connection, when the battery module that needs connect into different models, can directly connect through the busbar, realize that the battery module material to different models is general, reduce battery module material kind, reduce cost, improvement production efficiency.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.

In order to more clearly illustrate the embodiments or prior art solutions of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic view illustrating an overall structure of a bus bar structure for batteries according to an exemplary embodiment.

Fig. 2 is a schematic diagram (a) illustrating a bus bar structure for a battery according to an exemplary embodiment.

Fig. 3 is a schematic diagram illustrating a configuration of cells in a buss bar configuration for the cells in accordance with an exemplary embodiment.

Fig. 4 is a schematic diagram (two) illustrating a bus bar structure for a battery according to an exemplary embodiment.

Fig. 5 is a cross-sectional schematic view (one) of a bus bar structure for a battery, shown according to an exemplary embodiment, primarily to embody the first part.

Fig. 6 is a schematic cross-sectional view (ii) of a busbar structure for batteries, primarily to embody a first wall, according to an exemplary embodiment.

FIG. 7 is an isometric view of a busbar construction for a battery shown after the busbar has been cut, according to an exemplary embodiment.

Fig. 8 is an isometric view of a buss bar structure for a battery, primarily for embodying an auxiliary bar, according to an exemplary embodiment.

Fig. 9 is a schematic cross-sectional view illustrating a bus bar structure for batteries, which is mainly used to embody an auxiliary bar, according to an exemplary embodiment.

FIG. 10 is an isometric view of a module shown according to an exemplary embodiment.

FIG. 11 is an isometric view of a module shown according to an exemplary embodiment.

FIG. 12 is an isometric schematic view (III) of a module shown according to an exemplary embodiment.

Wherein the reference numerals are as follows:

1. a battery; 2. a body; 3. a pole column; 4. a bus bar; 5. a first connecting plate; 6. a fitting portion; 7. a first buffer member; 8. a first portion; 9. a first wall surface; 10. a second wall surface; 11. a second portion; 12. a third wall surface; 13. a first connection face; 14. a second connection face; 15. an end plate; 16. leading out the rows; 17. an insulating member; 18. a connecting member; 19. an auxiliary row; 20. a second connecting plate; 21. a through hole; 22. a second buffer member; 23. a fixed seat.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It is noted that in the description and claims of the present application and in the above-mentioned drawings, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.

Also, the terms "comprises," "comprising," and "having," as well as any variations thereof or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Referring to fig. 1 to 9, the embodiment of the present disclosure provides a busbar structure for a battery, including a battery 1 and a busbar 4, where the battery 1 includes a body 2 and a pole 3 disposed on the body 2. Busbar 4 includes two first connecting plates 5 and first bolster 7, be provided with cooperation portion 6 on the first connecting plate 5, cooperation portion 6 be used for with the cooperation of the lateral wall face of utmost point post 3, first bolster 7 sets up in two between the first connecting plate 5.

In the in-service use in-process, the cooperation of the side wall face of 6 and the utmost point post 3 of battery 1 through the cooperation portion of busbar 4 realizes electric connection, when the battery 1 module that connects into different models as needs, can directly connect through busbar 4, realizes that 1 module material of battery to different models is general, reduces 1 module material kind of battery, reduce cost, improvement production efficiency.

In a specific embodiment, the fitting portion 6 may be configured as an annular through hole 21, and the fitting portion 6 is fitted with the post 3, so that the fitting portion 6 is prevented from being connected to a side wall surface of the post 3, and the bus bar 4 is electrically connected to the battery 1. In addition, when connecting the battery 1 modules of different models, it is possible to form the battery 1 modules of different models by connecting a plurality of batteries 1 in different structures by using a plurality of bus bars 4. Specifically, the connection can be realized by respectively fitting the two fitting portions 6 of the bus bar 4 with the two poles 3 between the poles 3 of the two adjacent batteries 1. When three utmost point post 3 are connected to needs, only need use two busbar 4, and two busbar 4 about the interval set up and simultaneously the cover locate be located in the centre utmost point post 3 can. In order to avoid short circuit in the circuit connection process, an insulating gasket is arranged between the two busbars 4 arranged up and down, and in order to ensure the reliability of connection between the two busbars 4 and the pole 3, the thickness of the first connecting plate 5 is smaller than half of the height of the pole 3.

In an alternative embodiment, the mating portion 6 includes a first connection surface 13, and the first connection surface 13 is configured as a cambered surface structure; the included angle of the cambered surface structure is less than or equal to 180 degrees. Through this kind of mode of setting up for cooperation portion 6 is after the cooperation with utmost point post 3, and cooperation portion 6 only contacts with half the part of the side of utmost point post 3, makes this utmost point post 3 when needs cooperate with other utmost point posts 3, can adopt a busbar 4 again to be connected the cooperation with this other half lateral wall face of utmost point post 3, the operation of being convenient for. And after the connection, the plurality of busbars 4 are all positioned at the same height, so that the compactness of the whole structure is improved.

In a specific embodiment, the pole 3 includes a first portion 8 and a second portion 11, the first portion 8 includes a first wall surface 9 and a second wall surface 10 which are oppositely arranged, and the first wall surface 9 is connected with the body 2. The second portion 11 is disposed on the second wall surface 10, and the peripheral side of the second portion 11 is a third wall surface 12; the fitting portion 6 is connected to the second wall surface 10 and/or the third wall surface 12. During the connection process of the bus bar 4, the matching part 6 can be contacted with the second wall surface 10, so that the bus bar 4 is electrically connected with the battery 1; similarly, the matching part 6 can also be contacted with the third wall surface 12 to realize the electrical connection between the bus bar 4 and the battery 1; similarly, the fitting portion 6 can be simultaneously brought into contact with the second wall 10 and the third wall 12 to electrically connect the bus bar 4 and the battery 1.

In an alternative embodiment, the first portion 8 completely covers the second portion 11 based on the orthographic projection of the body 2, there being a spacing between the edge of the second portion 11 and the edge of the first portion 8. By setting the size of the first portion 8 to be larger, the second wall surface 10 of the first portion 8 can also support the bus bar 4 in the connection process of the bus bar 4, and can also separate the bus bar 4 from the body 2 of the battery 1, thereby effectively avoiding the situation that the bus bar 4 damages the body 2 of the battery 1 in the connection process.

In an alternative embodiment, when the first connection surface 13 is configured as an arc surface, the first connection surface 13 is an arc surface matched with the third wall surface 12, and the bottom surface of the first connection plate 5 contacts with the second wall surface 10. The first connecting plate 5 and the second wall 10 can be fixedly connected by laser penetration welding.

In an alternative embodiment, the first connection surface 13 is a bevel, and the first connection surface 13 is gradually far away from the central axis of the body 2 in the radial direction of the body 2. The first connecting surface 13 is used for connecting with the third wall 12, after the first connecting plate 5 is matched with the pole 3, a gap is reserved between the first connecting surface 13 and the third wall 12 through the arrangement of the inclined surface of the first connecting surface 13, and the gap can be filled with solder and welded by adopting laser to perform corner welding so as to fixedly connect the first connecting plate 5 and the pole 3.

Referring to fig. 1 to 9, in an alternative embodiment, the mating portion 6 further includes a second connecting surface 14 connected to the first connecting surface 13, and the second connecting surface 14 is disposed on a side of the first connecting surface 13 close to the body 2. Through second connection face 14 can cooperate with second portion 11 near first portion 8, second connection face 14 can play the effect of quick location, the connection operation of the later stage of being convenient for.

In a particular embodiment, the thickness of the first connection plate 5 is less than or equal to the height of the second portion 11. By limiting the thickness of the first connection plate 5, it is also possible to connect through the upper surface of the second portion 11 of the pole 3, when the pole 3 needs to be connected also when connecting the busbar 4. In the present embodiment, in order to facilitate the manufacturing of the first connecting plate 5, the thickness of the first connecting plate 5 is set to be smaller than the height of the second portion 11.

In a specific embodiment, the first buffer 7 has an arc-shaped structure. First bolster 7 extends the setting along the radial direction of body 2, makes through the setting of first bolster 7 to be separated between two first connecting plates 5, and then makes battery 1 in the in-process of using, and battery 1's the higher size that leads to battery 1 of temperature appears the expansion change, can carry out size compensation through first bolster 7 to prevent the solder joint between cooperation portion 6 and the utmost point post 3 to become invalid, improve the reliability of being connected between busbar 4 and the battery 1. Further, the first cushion member 7 can also play a role of cushioning when the battery 1 collides or the like, and can avoid the engaging portion 6 from being separated from the post 3.

In an alternative embodiment, the first buffer 7 is a convex or concave arc structure. The structure setting through arch or indent can play the effect of buffering, for the installation cooperation of convenience, in this embodiment, first bolster 7 adopts bellied arc structure to set up.

Referring to fig. 1-12, the disclosed embodiments also provide a module including the aforementioned busbar structure for batteries. Reference is made to the above description for the structure of the battery 1 and the bus bar 4, which will not be described herein. The module disclosed in the embodiment of the present application includes the aforementioned bus bar structure for the battery, so that the module having the bus bar structure for the battery also has all the technical effects described above, and the details are not repeated herein.

In a specific embodiment, the batteries 1 are provided with a plurality of batteries 1, adjacent batteries 1 are connected through the bus bar 4, and the connection mode between the bus bar 4 and the batteries 1 is different, so that different models of battery 1 modules are obtained. The module further comprises two end plates 15, an insulating member 17 and a connecting member 18, wherein each battery 1 is positioned between the two end plates 15, and a lead-out row 16 is arranged between each end plate 15 and the adjacent battery 1. The insulating member 17 is provided between the end plate 15 and the batteries 1, and the connecting member 18 is used to connect the end plate 15 to the plurality of batteries 1. The battery 1 module is connected with other components through the arrangement of the end plate 15, and particularly, the end plate 15 is made of metal materials for realizing electrical connection. By providing the insulating member 17 between the battery 1 and the end plate 15, an insulating effect is exerted. The plurality of batteries 1 and the end plate 15 are connected into a whole through the connecting piece 18, so that the whole structure of the module is more compact, and the module is convenient to install.

In a specific embodiment, the module is connected with an external device through a lead-out row 16, a fixed seat 23 is arranged on the end plate 15, and the fixed seat 23 is connected with the lead-out row 16; the outlet row 16 is supported and fixed by the arrangement of the fixed seat 23.

In an alternative embodiment, the connector 18 may be a connector clip, a connector box, or a connector strap. In this embodiment, the connecting member 18 is a connecting strap, and the number of the connecting members 18 is two, so that the whole module is bound by the two connecting straps, and the reliability of the whole connection is ensured.

In an optional embodiment, the module further includes an auxiliary row 19, where the auxiliary row 19 includes two second connection plates 20 and a second buffer 22, where the second connection plates 20 are used for being matched with a side of the pole 3 away from the body 2, and a through hole 21 is formed in the second connection plates 20; the second buffer 22 is disposed between the two second connecting plates 20. In particular, the second connection plate 20 is intended to be connected to a side of the second portion 11 facing away from the first portion 8, so as to enable the electrical connection of the auxiliary row 19 to the battery 1. Optionally, the second connecting plate 20 and the second portion 11 are welded together by laser penetration.

In a specific embodiment, the through holes 21 communicate with the second portion 11, so that the welding position of the second connection plate 20 is easily determined by the arrangement of the through holes 21, and the second connection plate 20 is easily connected with the battery 1. Meanwhile, the position of the pole 3 of the battery 1 can be conveniently determined through the arrangement of the through hole 21, and the battery 1 can be conveniently detected.

In an alternative embodiment, the second buffer 22 has the same structure and material as the first buffer 7.

When a certain battery 1 in the module is damaged, the first connecting plate 5 of the bus bar 4 may be cut, the damaged battery 1 may be taken out of the module, and then after a new battery 1 is installed in the module and the new battery 1 is replaced in the module, the new battery 1 is connected to the pole 3 of the adjacent battery 1 through the auxiliary bar 19. Through this kind of mode, be convenient for maintain and change the battery 1 in the module, can improve the material commonality greatly, reduce material design, technology, production, administrative cost, can satisfy module structural strength and fail safe nature simultaneously.

The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications and changes to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A bus bar structure for a battery, characterized in that,

the battery (1) comprises a body (2) and a pole (3) arranged on the body (2);

the busbar (4) comprises:

the two first connecting plates (5) are provided with matching parts (6), and the matching parts (6) are used for being matched with the side wall surfaces of the poles (3); and

and the first buffer piece (7) is arranged between the two first connecting plates (5).

2. The busbar structure for batteries according to claim 1, wherein said post (3) comprises:

a first portion (8) comprising a first wall (9) and a second wall (10) arranged opposite each other, the first wall (9) being connected to the body (2); and

a second portion (11) provided on the second wall surface (10), the second portion (11) having a third wall surface (12) on the peripheral side thereof; the fitting part (6) is connected to the second wall surface (10) and/or the third wall surface (12).

3. The bus bar structure for batteries according to claim 2, wherein the first portion (8) completely covers an orthogonal projection of the second portion (11) based on the body (2) with a space between an edge of the second portion (11) and an edge of the first portion (8) based on an orthogonal projection of the body (2).

4. The bus bar structure for batteries according to claim 3, wherein the thickness of the first connecting plate (5) is less than or equal to the height of the second portion (11).

5. The bus bar structure for batteries according to claim 2, wherein the fitting portion (6) includes a first connection surface (13), the first connection surface (13) being an arc surface that is fitted with the third wall surface (12).

6. The bus bar structure for batteries according to claim 5, wherein the first connection face (13) is a slope, the first connection face (13) gradually departing from a central axis of the body (2) in a radial direction of the body (2).

7. The bus bar structure for batteries according to claim 6, wherein the fitting portion (6) further comprises a second connection face (14) connected to the first connection face (13), the second connection face (14) being provided on a side of the first connection face (13) adjacent to the body (2).

8. The bus bar structure for batteries according to claim 1, wherein the first buffer member (7) is a convex or concave arc-shaped structure.

9. A module comprising a busbar structure for batteries according to any one of claims 1 to 8, said batteries (1) being provided in plurality, adjacent batteries (1) being connected by said busbar (4); the module still includes:

the battery pack comprises two end plates (15), each battery (1) is positioned between the two end plates (15), and a lead-out row (16) is arranged between each end plate (15) and the adjacent battery (1);

an insulator (17) provided between the end plate (15) and the battery (1); and

a connecting member (18) for connecting the end plate (15) with the plurality of cells (1).

10. A module according to claim 9, characterized in that it further comprises an auxiliary bank (19), said auxiliary bank (19) comprising:

the two second connecting plates (20), the second connecting plates (20) are used for being matched with one side, away from the body (2), of the pole (3), and through holes (21) are formed in the second connecting plates (20); and

and the second buffer piece (22) is arranged between the two second connecting plates (20).

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