CN216413211U

CN216413211U - Battery module

Info

Publication number: CN216413211U
Application number: CN202122508170.9U
Authority: CN
Inventors: 何亚飞
Original assignee: Envision Power Technology Jiangsu Co Ltd; Envision Ruitai Power Technology Shanghai Co Ltd
Current assignee: Envision Power Technology Jiangsu Co Ltd; Envision Ruitai Power Technology Shanghai Co Ltd
Priority date: 2021-10-18
Filing date: 2021-10-18
Publication date: 2022-04-29
Anticipated expiration: 2031-10-18

Abstract

The utility model discloses a battery module. In the present invention, a battery module includes: an outer frame; the battery cores are arranged in the outer frame; the bus bar is arranged at one end of the outer frame and is used for the penetration of the lugs of the battery cells; the first electric connector is arranged on the bus bar; the first electric connecting piece is clamped and fixed with the bus bar, and the first electric connecting piece is hot riveted and fixed with the bus bar. Compared with the prior art, the first electric connecting piece is firmly fixed on the bus bar and is not easy to break away, and the connecting structure strength of the bus bar and the first electric connecting piece is higher, so that the battery module is more stable to use.

Description

Battery module

Technical Field

The utility model relates to the field of batteries, in particular to a battery module.

Background

In recent years, the appearance of new energy automobiles plays a great role in promoting social development and environmental protection, and a power battery pack is a rechargeable battery, is a power source of the new energy automobiles, and is widely applied to the field of the new energy automobiles. The battery pack comprises a plurality of battery modules, the battery modules are vertically arranged in the outer frame through a plurality of battery cores, the two ends of each battery core are provided with busbars, the busbars support first electric connecting pieces, and after the electrode lugs of the battery cores penetrate through the busbars, the busbars are connected with the first electric connecting pieces to realize series connection of the battery cores. The upper end and the lower end of a bus bar in the existing battery module are provided with convex buckles to hook a first electric connector, so that the first electric connector is positioned on the bus bar. But the buckle is fixed insecure in this kind of structure, and first electric connector easily appears rocking, and breaks away from the scheduling problem from the busbar, and the buckle stretching resistance is less, is unfavorable for promoting structural strength for connection between the electric core is also unstable, and then has influenced battery module's stability.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a battery module, which enables a first electric connecting piece to be firmly fixed on a bus bar and not to be easily separated, and the connection structure strength of the bus bar and the first electric connecting piece is higher, so that the battery module is more stable to use.

In order to solve the above technical problem, an embodiment of the present invention provides a battery module, including:

an outer frame;

the battery cells are arranged in the outer frame;

the bus bar is arranged at one end of the outer frame and is used for the penetration of the lugs of the battery cells; and the number of the first and second groups,

the first electric connector is arranged on the bus bar;

the first part of the first electric connector is fixedly clamped with the bus bar, and the second part of the first electric connector is fixedly hot-riveted with the bus bar.

In one embodiment, the first electrical connector has an upper end and a lower end, wherein one of the upper end and the lower end of the first electrical connector is fixed to the busbar by clamping, and the other end of the first electrical connector is fixed to the busbar by hot riveting.

In an embodiment, the bus bar has a hook for hooking the first electrical connector, and the hook is used for being clamped and fixed with the first electrical connector.

In one embodiment, the bus bar has a protruding rivet post thereon, and the first electrical connector has a through hole thereon for the rivet post to pass through.

In an embodiment, the first electrical connector is disposed on a side of the busbar away from the battery cell, and a tab of the battery cell penetrates through the busbar and is connected with the first electrical connector.

In one embodiment, the battery module has an output terminal;

the outer frame is provided with an opening for exposing the output terminal;

the outer frame is provided with a protective cover for covering the output terminal, the protective cover is provided with a cover body which is connected with the outer frame and covers the upper end face of the output terminal, and an extension part which extends from one end of the cover body to the direction far away from the cover body, and the extension part covers the outward side end face of the output terminal; wherein the extension is removably connected with the shroud body.

In one embodiment, the extension is connected to the shroud body by a line of weakness.

In one embodiment, a second electrical connector is connected to the bus bar, and the output terminal is formed by bending the second electrical connector in a direction away from the bus bar.

In one embodiment, the opening is formed at an edge of the outer frame, and two outer surfaces of the outer frame, which are connected with the edge, are opened; the cover body covers the opening area of the opening on one surface and covers the partial opening area of the opening on the other surface, and the extension part covers the other partial opening area of the opening on the other surface.

In one embodiment, the cover body has a clamping wall embedded in the opening and connected with the outer frame, and a cover portion connected with the clamping wall and covering the upper end face of the output terminal.

Compared with the prior art, the first electric connecting piece and the bus bar are fixed in a clamping mode and a hot riveting mode, the first electric connecting piece is not prone to being separated from the bus bar, the first electric connecting piece is high in tensile strength due to the hot riveting fixing, the space required by the fixing structure is reduced, and meanwhile the overall structural strength of the scheme is improved, so that the first electric connecting piece is fixed on the bus bar more stably, the connection between the battery cores is higher in temperature, and the use of the battery module is more stable.

Drawings

Fig. 1 is a schematic structural view of a battery module according to a first embodiment of the present invention;

FIG. 2 is a schematic view of a first electrical connector according to a first embodiment of the present invention disposed on a busbar;

fig. 3 is a schematic structural view illustrating a structure in which one output terminal of a battery module is exposed and the other output terminal is covered according to a first embodiment of the present invention;

fig. 4 is a schematic structural view of a battery module according to a first embodiment of the present invention, after a protective cover is removed;

fig. 5 is a schematic structural view of the protective cover according to the first embodiment of the present invention.

Reference numerals: 100. a battery module; 1. an outer frame; 2. a bus bar; 3. a first electrical connection; 4. a hook; 5. carrying out hot riveting on the column; 6. an output terminal; 10. an opening; 7. a protective cover; 71. a cover body; 711. a clamping wall; 712. a cover portion; 72. an extension portion; 73. a line of weakness; 11. an edge; 8. a second electrical connection.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present application in various embodiments of the present invention. However, the technical solutions claimed in the claims of the present application can be implemented without these technical details and with various changes and modifications based on the following embodiments.

Throughout the specification and claims, the word "comprise" and variations thereof, such as "comprises" and "comprising," are to be understood as an open, inclusive meaning, i.e., as being interpreted to mean "including, but not limited to," unless the context requires otherwise.

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings in order to more clearly understand the objects, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are merely intended to illustrate the spirit of the technical solution of the present invention.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

As used in this specification and the appended claims, the singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and/or" unless the context clearly dictates otherwise.

In the following description, for the purposes of clearly illustrating the structure and operation of the present invention, directional terms will be used, but terms such as "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be construed as words of convenience and should not be construed as limiting terms.

Embodiments of the present invention are described below with reference to the drawings. As shown in fig. 1 and 2, the battery module 100 includes: frame 1, set up a plurality of electricity core, busbar 2 and the first electric connector 3 of setting on busbar 2 in frame 1. Each electric core can be arranged in order, and a utmost point ear of each electric core all faces the one end of frame 1, and another utmost point ear of each electric core faces the other end of frame 1. The busbar 2 is arranged at one end of the outer frame 1 and used for penetrating through the lugs of the cells, the first part of the first electric connecting piece 3 is fixedly clamped with the busbar 2, and the second part of the first electric connecting piece 3 is fixedly hot riveted with the busbar 2. The utmost point ear of electric core is passed through behind the busbar 2 and is connected with first electric connector 3, realizes establishing ties between each electric core through first electric connector 3. In other embodiments, a bus bar 2 and a first electrical connector 3 connected to the bus bar 2 may also be provided on the other end of the outer frame 1, which is not shown in fig. 1. The first electrical connector 3 may be copper bar or aluminum bar or other conductive metal members in the battery module 100.

According to the above, because first electric connector 3 is fixed with busbar 2 through the joint and rivet hot is fixed, first electric connector 3 is difficult to break away from busbar 2, and rivet hot is fixed and is let first electric connector 3 stretching resistance great, when reducing the required space of fixed knot structure, the overall structure intensity of scheme is improved to let first electric connector 3 more be stable fixing on busbar 2, the connection between the electric core is more temperature, battery module 100's use is also more stable.

Further, as shown in fig. 2, the first electrical connector 3 has an upper end and a lower end, wherein one end of the upper end and the lower end of the first electrical connector 3 is fixed to the bus bar 2 by clamping, and the other end is fixed to the bus bar 2 by hot riveting. As shown in the figure, the first part is located at the upper end of the first electric connecting piece 3, the upper end of the first electric connecting piece 3 is fixedly clamped with the bus bar 2, the second part is located at the lower end of the first electric connecting piece 3, and the lower end of the second part is fixedly hot-riveted with the bus bar 2.

Further, as shown in fig. 2, the bus bar 2 has a hook 4 for hooking the first electrical connector 3, and the hook 4 is used for being fastened and fixed with the first electrical connector 3. The hook 4 and the bus bar 2 can be integrally formed or can be detachably connected.

In addition, as shown in fig. 2, the bus bar 2 has a protruding rivet 5, and the first electrical connector 3 has a through hole for the rivet 5 to pass through. When the installation, can be with first electric connector 3 joint on busbar 2 earlier to the through-hole that hot riveting post 5 runs through, thereby realize letting first electric connector 3 fix a position on busbar 2, hot riveting post 5 is melted again, strengthens fixing first electric connector 3 on busbar 2.

Further, as shown in fig. 2, the first electrical connector 3 is disposed on a side of the busbar 2 facing away from the battery cell, and a tab of the battery cell penetrates through the busbar 2 and is connected to the first electrical connector 3.

As shown in fig. 1, 3, 4, and 5, the battery module 100 includes an output terminal 6, and the outer frame 1 has an opening 10 for exposing the output terminal 6. The outer frame 1 is provided with a protective cover 7 for covering the output terminal 6, the protective cover 7 is provided with a cover body 71 which is connected with the outer frame 1 and covers the upper end surface of the output terminal 6, an extension part 72 which extends from one end of the cover body 71 to the direction far away from the cover body 71, and the extension part 72 covers the side end surface of the output terminal 6 facing outwards; wherein the extension 72 is detachably connected to the cover body 71. Therefore, the output terminals 6 are completely covered by the protective cover 7 and cannot be exposed outside, the requirement of the protection level is met, and the extension part 72 is detachably connected with the cover body 71, so that when the output terminals 6 of the battery module 100 are connected into a circuit, the extension part 72 can be conveniently detached, the output terminals 6 can be normally used for wiring, and the interference of the extension part 72 cannot occur.

Preferably, as shown in fig. 1, 3, 4 and 5, the extension 72 is connected to the shield body 71 by a line of weakness 73, such that the area of connection of the extension 72 to the shield body 71 is relatively frangible and breakable. It is understood that the extension 72 and the cover body 71 may be connected by plugging, and the extension 72 is inserted into the cover body 71.

Further, as shown in fig. 2 and 4, the bus bar 2 is also connected with a second electrical connector 8, and the output terminal 6 is formed by bending the second electrical connector 8 in a direction away from the bus bar 2. The second electrical connection 8, which may be copper bar, is separate from the first electrical connection 3. The output terminals 6 are provided with two positive electrodes and two negative electrodes, the second connecting pieces are also provided with two second connecting pieces, the two output terminals 6 are respectively positioned on the two second electric connecting pieces 8, and the lugs of the electric cores at the first end and the last end in the electric cores which are arranged in sequence are respectively electrically connected with the second connecting pieces.

Further, as shown in fig. 1 and 3, an opening 10 is opened at an edge 11 of the outer frame 1, and two outer surfaces connecting the edge 11 to the outer frame 1 are opened. The cover body 71 covers an open area of the opening 10 on one surface and a partially open area of the opening 10 on the other surface, and the extension 72 covers the partially open area of the opening 10 on the other surface.

Further, as shown in fig. 1 and 5, the cover body 71 has a latching wall 711 which is fitted into the opening 10 and connected to the outer frame 1, and a covering portion 712 which connects the latching wall 711 and covers the upper end surface of the output terminal 6.

While the preferred embodiments of the present invention have been described in detail above, it should be understood that aspects of the embodiments can be modified, if necessary, to employ aspects, features and concepts of the various patents, applications and publications to provide yet further embodiments.

These and other changes can be made to the embodiments in light of the above detailed description. In general, in the claims, the terms used should not be construed to be limited to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which such claims are entitled.

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the utility model, and that various changes in form and details may be made therein without departing from the spirit and scope of the utility model in practice.

Claims

1. A battery module, comprising:

an outer frame;

the battery cells are arranged in the outer frame;

the bus bar is arranged at one end of the outer frame and is used for the penetration of the lugs of the battery cells; and

a first electrical connector disposed on the bus bar,

2. The battery module of claim 1, wherein the first electrical connector has an upper end and a lower end, wherein one of the upper and lower ends of the first electrical connector is snap-fit to the busbar and the other end is hot-rivet secured to the busbar.

3. The battery module as claimed in claim 1, wherein the bus bar has a hook for hooking the first electrical connector, and the hook is adapted to be fastened to the first electrical connector.

4. The battery module according to claim 1, wherein the bus bar has a protruding rivet post thereon, and the first electrical connector has a through hole thereon for the rivet post to pass through.

5. The battery module according to claim 1, wherein the first electrical connector is disposed on a side of the busbar facing away from the cells, and tabs of the cells are connected to the first electrical connector through the busbar.

6. The battery module according to claim 1, wherein the battery module has an output terminal;

the outer frame is provided with an opening for exposing the output terminal;

be provided with on the frame and cover output terminal's safety cover, the safety cover have with the frame links to each other and covers output terminal up end cover body, by the one end of cover body is towards keeping away from the extension that the direction of cover body extends, the extension covers output terminal side end face outwards, wherein the extension with the connection can be dismantled to the cover body.

7. The battery module according to claim 6, wherein the extension is connected to the cap body by a line of weakness.

8. The battery module according to claim 6, wherein a second electrical connector is connected to the bus bar, and the output terminal is formed by bending the second electrical connector away from the bus bar.

9. The battery module according to claim 8, wherein the opening is formed at an edge of the outer frame and is open toward both outer surfaces of the outer frame connecting the edge; the cover body covers the opening area of the opening on one surface and covers the partial opening area of the opening on the other surface, and the extension part covers the other partial opening area of the opening on the other surface.

10. The battery module according to claim 6, wherein the cover body has a catching wall that is fitted into the opening and is connected to the outer frame, and a covering portion that connects the catching wall and covers the upper end surface of the output terminal.