CN215342875U

CN215342875U - Battery pack and its bus bar

Info

Publication number: CN215342875U
Application number: CN202121892700.8U
Authority: CN
Inventors: 何亚飞; 其他发明人请求不公开姓名
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: 2021-08-13
Filing date: 2021-08-13
Publication date: 2021-12-28
Anticipated expiration: 2031-08-13

Abstract

The utility model discloses a battery pack and a bus bar thereof. In the present invention, the battery pack comprises: a first connecting member; the pair of second connecting pieces are respectively connected with two ends of the first connecting piece in a clamping mode, and at least part of each second connecting piece and at least part of the first connecting piece form a preset included angle; wherein the first connecting piece and each second connecting piece are formed separately as separate parts. Compared with the prior art, the material utilization rate for forming the splints is high, and the cost is reduced.

Description

Battery pack and its bus bar

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery pack and a bus bar thereof.

Background

With the development of power battery technology, battery packs are increasingly widely used due to their advantages of good safety performance, light weight, large capacity, small internal resistance, flexible design, and the like. The battery pack is internally provided with a plurality of battery modules, and the bars are used for connecting the battery modules and the electrodes of the battery pack in the battery pack. The bus bar piece can be copper bar or aluminium bar, and traditional copper bar or aluminium bar adopt integral punching press bending process, along with the improvement of electric automobile electric quantity requirement, the length of battery package even exceeds 2m, because there is the kink at copper bar or aluminium bar both ends, whole copper bar or aluminium bar are irregular shape, and copper bar or aluminium bar are whole to be followed the punching press bending type formation back on the material, and remaining material will have a lot of irregular waste material to produce and can't continue to utilize for material utilization is lower.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a battery pack and a bus bar thereof, which have the advantages of high utilization rate of materials for forming the bus bar and cost reduction.

To solve the above technical problem, an embodiment of the present invention provides a battery pack tab, including:

a first connecting member; and the number of the first and second groups,

the pair of second connecting pieces are respectively connected with two ends of the first connecting piece in a clamping manner, and at least part of each second connecting piece and at least part of the first connecting piece form a preset included angle; wherein the first connector and each of the second connectors are separately formed as separate parts.

In an embodiment, the portions of the first connecting piece and the second connecting piece which are clamped are located on the same plane.

In one embodiment, both ends of the first connecting piece are provided with clamping parts; the second connecting piece is provided with a matching part which is complementary with the clamping part.

In an embodiment, at least one of the clamping portions is a protruding portion protruding along an extending direction of the first connecting piece;

at least one of the mating portions is a groove.

In one embodiment, the protrusion has a connecting section connected to the first connecting member, and a clamping head extending from a free end of the connecting section, and the clamping head has at least a portion of a width greater than that of the connecting section.

In an embodiment, at least one of the clamping parts is a first clamping hook part formed by extending along the extending direction of the first connecting piece; at least one of the engagement portions is a second hook member engaged with the first hook member.

In one embodiment, the first hook member has a first hook portion, and a first spacing portion that spaces the first hook portion from the first connector; the second hook member is specifically embedded between the first hook portion and the first partition portion, and a second partition portion that partitions the second hook portion from the second link, the first hook portion being embedded between the second hook portion and the second partition portion.

In one embodiment, the first connecting member is a long straight bar; each second connecting piece has with the extension section that first connecting piece links to each other, and by the bending segment that the free end bending type of extension section formed, the bending segment with first connecting piece is preset the contained angle.

In an embodiment, the connection position of the first connection member and the second connection member is fixed by using thermocompression bonding.

An embodiment of the present invention also provides a battery pack including:

a housing;

a plurality of battery modules disposed within the housing; and the number of the first and second groups,

the bus bar of any one of the above claims, disposed within the housing and electrically connected to the battery module.

Compared with the prior art, the embodiment of the utility model has the advantages that the pair of second connecting pieces and the first connecting piece are separately formed into the independent parts, so that the material in the area between the two second connecting pieces cannot be reused and wasted when the whole piece is stamped and formed can not be generated, and thus, the parts are separately and independently formed, the material can be reasonably planned and utilized, the material utilization rate is improved, and the cost is reduced.

Drawings

FIG. 1 is a schematic view of a structure of a first embodiment of a bus bar according to the present invention;

FIG. 2 is an exploded view of a first embodiment of a bus bar according to the present invention;

FIG. 3 is an enlarged fragmentary view of the junction of the first connector and the second connector in accordance with the first embodiment of the present invention;

FIG. 4 is a schematic structural view of a second embodiment of a platform according to the present invention;

FIG. 5 is an exploded view of a second embodiment of a buckstay in accordance with the present invention;

FIG. 6 is an enlarged fragmentary view of the junction of the first connector and the second connector in accordance with a second embodiment of the present invention;

fig. 7 is a schematic structural view of a battery pack according to a third embodiment of the present invention;

wherein, 100, Ba pian; 1. a first connecting member; 2. a second connecting member; 21. an extension section; 22. bending the section; 3. a projection; 31. a connecting section; 32. a clamping head; 4. a groove; 200. a tablet; 5. a first hook member; 51. a first hook portion; 52. a first partition portion; 6. a second hook member; 61. a second hook portion; 62. a second partition portion; 300. a battery pack; 7. a housing; 8. a battery module is provided.

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.

The bus bar piece can be copper bar or aluminium bar, sets up in the battery package, connects the electrode of battery module and battery package, and the bus bar piece also can be used to connect two battery modules. The tabs may be used to electrically connect the various components within the battery pack.

Embodiments of the present invention are described below with reference to the drawings.

A first embodiment of the present invention relates to a battery pack blade 100. As shown in fig. 1, 2 and 3, the bus bar 100 includes: the connecting structure comprises a first connecting piece 1 and a pair of second connecting pieces 2, wherein the pair of second connecting pieces 2 are connected with two ends of the first connecting piece 1 in a clamping mode respectively, and at least part of each second connecting piece 2 and at least part of the first connecting piece 1 form a preset included angle. Wherein the first connecting member 1 and each second connecting member 2 are separately formed as separate parts.

According to the above, due to the pair of second connecting pieces 2 and the independent part formed by the first connecting piece 1 in a separated mode, when the whole stamping bus bar piece is formed, materials in the area between the two second connecting pieces 2 cannot be reused and wasted, so that the materials can be planned and utilized reasonably through the separated and independent forming of all the parts, the material utilization rate is improved, and the cost is reduced. And the second connecting piece 2 is connected with the two ends of the first connecting piece 1 in a clamping manner, so that the connecting strength of the first connecting piece 1 and the second connecting piece 2 is increased.

Further, as shown in fig. 1, 2 and 3, the portions of the first connector 1 and the second connector 2 which are clamped are located on the same plane. Therefore, the first connecting piece 1 and the second connecting piece 2 are connected to be more integral, and the joint of the splints is more flat.

Further, as shown in fig. 1, 2 and 3, both ends of the first connecting member 1 have a snap-in portion, and the second connecting member 2 has a mating portion complementary to the snap-in portion. Therefore, the joint of the first connecting piece 1 and the second connecting piece 2 is connected more tightly, the overall strength of the bus bar is better, the first connecting piece 1 and the second connecting piece 2 are not easy to separate when the bus bar is used for a long time, and the service life is prolonged.

Alternatively, as shown in fig. 1, 2 and 3, the clamping portion is a protrusion 3 protruding in the extending direction of the first connector 1, and the second connector 2 has a groove 4 for accommodating the protrusion 3, i.e. the matching portion is the groove 4. It can be understood that the first connecting member 1 may have a protruding portion 3 as one end engaging portion and another end as another structure, or may have protruding portions 3 as engaging portions at two ends.

Further, as shown in fig. 1, 2 and 3, the projection 3 has a connecting section 31 connected to the first connecting member 1, and a snap head 32 extending from a free end of the connecting section 31, and the snap head 32 has a width larger than that of the connecting section 31 at least in part. The head portion may be circular as shown in the figure, with the projection 3 being integrally formed as a "drip head". It will be appreciated that the snap-fit joint 32 may also be rectangular or have other shapes, and may be inserted into the groove 4 of the second connector 2.

Further, as shown in fig. 1, 2 and 3, the first connecting member 1 is a long straight strip, each second connecting member 2 has an extending section 21 connected to the first connecting member 1, and a bending section 22 formed by bending a free end of the extending section 21, and the bending section 22 forms a predetermined included angle with the first connecting member 1. The first connecting piece 1 and the second connecting piece 2 are respectively punched out of the material, and the second connecting piece 2 also needs to use a bending process. When the whole stamping bus bar piece is formed, the material in the area between the two second connecting pieces 2 can not be reused and is wasted, the length of the first connecting piece 1 is longer and is a long straight strip, the regular area can be stamped from the material, the material can be more reasonably planned and utilized, and the material is saved.

It will be appreciated that in other embodiments, the first connecting member 1 may not be a long straight strip, but may be partially bent.

In addition, the joint of the first connecting piece 1 and the second connecting piece 2 adopts hot-press welding for fixation or other processes.

The second embodiment of the present invention relates to a battery pack blade 200. The second embodiment is substantially the same as the first embodiment, and mainly differs therefrom in that: in the first embodiment, the snap-in part is a protrusion 3 and the mating part is a groove 4. In a second embodiment of the present invention, as shown in fig. 4, 5 and 6, the first and second connectors 1 and 2 may be connected in a zigzag form. The joint portion is the first clasp part 5 that extends the formation along the extending direction of first connecting piece 1, and second connecting piece 2 has and is used for the second clasp part 6 with first clasp part 5 matched with, and the cooperation portion is second clasp part 6 promptly. It can be understood that the first hook member 5 is a clamping portion at one end of the first connecting member 1, and the other end of the first connecting member is of other structure, or the first hook members 5 can be clamping portions at two ends.

Further, as shown in fig. 4, 5 and 6, the first hook member 5 has a first hook portion 51, and a first partition portion 52 that partitions the first hook portion 51 from the first connector 1. The second hook member 6 is specifically embedded between the first hook portion 51 and the first partition portion 52 by a second hook portion 61, and the second partition portion 62 partitions the second hook portion 61 from the second link 2, the first hook portion 51 being embedded between the second hook portion 61 and the second partition portion 62.

Since the first embodiment corresponds to the present embodiment, the present embodiment can be implemented in cooperation with the first embodiment. The related technical details mentioned in the first embodiment are still valid in this embodiment, and the technical effects that can be achieved in the second embodiment can also be achieved in this embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related-art details mentioned in the present embodiment can also be applied to the first embodiment.

It can be understood that the clamping portions at the two ends of the first connecting member 1 can adopt the first embodiment at one end and the second embodiment at the other end. The mating portion changes accordingly.

The third embodiment of the present invention relates to a battery pack 300. As shown in fig. 7, the battery pack 300 includes a housing 7, a plurality of battery modules 8, and the bus bar 100 as in the first embodiment above, the battery modules 8 and the bus bar 100 being disposed in the housing, the bus bar 100 being electrically connected to the battery modules. The blades in the battery pack 300 may also be the blades 200 of the second embodiment.

It should be understood that this embodiment is a system embodiment corresponding to the first embodiment and the second embodiment, and the present embodiment can be implemented in cooperation with the first embodiment and the second embodiment. The related technical details mentioned in the first embodiment and the second embodiment are still valid in this embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related-art details mentioned in the present embodiment can also be applied to the first embodiment and the second embodiment.

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 pack blade, comprising:

a first connecting member; and the number of the first and second groups,

2. The battery pack blade of claim 1, wherein the first connector and the second connector are clamped together at the same plane.

3. The blade of the battery pack of claim 2, wherein the first connecting member has a snap-fit portion at both ends; the second connecting piece is provided with a matching part which is complementary with the clamping part.

4. The battery pack blade as claimed in claim 3, wherein at least one of the snap-fit portions is a projection projecting in the extending direction of the first connecting member;

at least one of the mating portions is a groove.

5. The battery pack blade of claim 4, wherein the protrusion has a connecting section connected to the first connector, and a snap-fit joint extending from a free end of the connecting section, the snap-fit joint being at least partially wider than the connecting section.

6. The battery pack blade as set forth in claim 3, wherein at least one of said catching portions is a first catching hook member formed extending in the extending direction of said first connecting member; at least one of the engagement portions is a second hook member engaged with the first hook member.

7. The battery pack fin of claim 6, wherein the first hook member has a first hook portion and a first spacing portion that spaces the first hook portion from the first connection member; the second hook member is specifically embedded between the first hook portion and the first partition portion, and a second partition portion that partitions the second hook portion from the second link, the first hook portion being embedded between the second hook portion and the second partition portion.

8. The battery pack blade of claim 1, wherein the first connecting member is a long straight bar; each second connecting piece has with the extension section that first connecting piece links to each other, and by the bending segment that the free end bending type of extension section formed, the bending segment with first connecting piece is preset the contained angle.

9. The blade of the battery pack of claim 1, wherein the connection between the first and second connectors is secured by thermocompression bonding.

10. A battery pack, comprising:

a housing;

the buss as recited in any of claims 1-9, disposed within the housing and electrically connected to the battery module.