CN218182420U

CN218182420U - Electric assembly for power battery and power battery

Info

Publication number: CN218182420U
Application number: CN202222637241.XU
Authority: CN
Inventors: 宋世柳; 谢学健; 朱立德; 胡广伟
Original assignee: Weilai Automobile Technology Anhui Co Ltd
Current assignee: Weilai Automobile Technology Anhui Co Ltd
Priority date: 2022-10-08
Filing date: 2022-10-08
Publication date: 2022-12-30
Anticipated expiration: 2032-10-08

Abstract

The utility model relates to an electric assembly and power battery for power battery, this electric assembly include insulating heat-conducting piece and two at least busbars, and all busbars are all integrated on insulating heat-conducting piece, and the bottom surface of every busbar all contacts with insulating heat-conducting piece. The utility model discloses can improve the heat-sinking capability of busbar, the electric current-carrying of increase busbar, and simplify the installation of busbar.

Description

Electric assembly for power battery and power battery

Technical Field

The utility model relates to a power battery technical field especially relates to an electric assembly and power battery for power battery.

Background

A high voltage component is disposed between a high voltage battery and a motor of an electric vehicle, and the high voltage component functions to selectively supply power to the high voltage battery, and may include a main relay, a precharge resistor, and the like, which are electrically connected to each other via a bus bar. The bus, which is a conductor with low impedance and high current capacity, can individually connect more than 2 circuits or connect equivalent points within one system. The connection of the busbar in the existing power battery system mainly leads to poor heat dissipation efficiency through natural heat dissipation. In addition, the busbar of the electrical assembly in the existing power battery system is installed and used in a single piece, so that the installation work time is long and the material waste is large.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric assembly and power battery for power battery to improve the heat-sinking capability of busbar, increase the electric current-carrying of busbar, and simplify the installation of busbar.

The purpose of the utility model is realized by adopting the following technical scheme. The basis the utility model provides an electric assembly for power battery, including insulating heat-conducting piece and two at least busbars, all the busbar all is integrated on the insulating heat-conducting piece, and every the bottom surface of busbar all with insulating heat-conducting piece contact.

In some embodiments, the bus bar is made of aluminum.

In some embodiments, the bus bar is integrated on the upper surface of the insulating and heat conducting member by one of hot molding, cold pressing, and bonding.

In some embodiments, the electrical assembly further includes a base disposed above and connected to the bus bar.

In some embodiments, the base is fixedly connected to the busbar by a screw.

In some embodiments, the electrical assembly further comprises a thermally conductive member, an upper surface of the thermally conductive member being in contact with a lower surface of the insulative thermally conductive member.

In some embodiments, the lower surface of the thermally conductive member is in contact with a cooling plate of the power cell.

In some embodiments, the electrical assembly further comprises a high voltage component connected to the bus bar.

The utility model also provides a power battery, including aforementioned electric assembly.

The beneficial effects of the utility model include at least:

1. the utility model discloses a to unify all busbars that are connected with high-voltage components and parts on insulating heat-conducting piece, and the bottom surface of every busbar all with insulating heat-conducting piece contact, be convenient for cool off all busbars through insulating heat-conducting piece to improve the heat-sinking capability of busbar, increase the electric current-carrying of busbar, and the installation of the busbar of being convenient for.

2. The busbar make by the aluminum product to can reduce the cost and the weight of busbar.

3. The utility model discloses a make the upper surface of heat-conducting piece and the contact of insulating heat-conducting piece and the lower surface of heat-conducting piece and power battery's cooling plate contact, can derive the heat in the busbar via insulating heat-conducting piece, heat-conducting piece and power battery's cooling plate fast in proper order, improved the heat-sinking capability of busbar.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

Fig. 1 shows a schematic structural diagram of an electrical assembly for a power cell according to an embodiment of the present invention.

Detailed Description

To further illustrate the technical means of the present invention, the following detailed description of an electrical assembly for a power battery and a specific embodiment of the power battery according to the present invention is provided with reference to the accompanying drawings and preferred embodiments. The following examples are merely for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the scope of protection of the present application is not limited thereby.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the term "comprising" and any variations thereof in the description and claims of this application and in the description of the above figures are intended to cover non-exclusive inclusions.

In the description of the present invention, it is also to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, e.g. as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, the electrical assembly for power battery of the present invention includes at least two busbars 1 and an insulating heat-conducting member 2, wherein the busbars 1 are all configured to be similar to a plate shape and are connected to a high-voltage component 3, and specifically, the busbars 1 are fixedly connected to the high-voltage component 3 through screws. The insulating and heat-conducting member 2 is configured in a plate shape and made of an insulating and heat-conducting thermoplastic material, and the thickness of the insulating and heat-conducting member 2 is about 0.1mm. All the busbars 1 are integrated on the upper surface of the insulating and heat-conducting member 2, and the bottom surface of each busbar 1 is in contact with the upper surface of the insulating and heat-conducting member 2. Specifically, the bus bar 1 may be integrated on the upper surface of the insulating heat-conductive member 2 by one of heat molding, cold pressing, and adhesion.

A electric assembly for power battery through all busbars 1 unified integration be connected with high-voltage components and parts 3 on insulating heat-conducting piece 2, and every busbar 1's bottom surface all with insulating heat-conducting piece 2 contact, be convenient for cool off all busbars 1 through insulating heat-conducting piece 2 to improve busbar 1's heat-sinking capability, increase busbar 1's electric current-carrying, and the installation of the busbar 1 of being convenient for.

In a preferred embodiment, the bus bar 1 of the present invention is made of aluminum material, so that the cost and weight of the bus bar 1 can be reduced. It should be noted that, although the heat conductivity of the aluminum busbar 1 is relatively poor for the heat conductivity of the copper busbar 1, the utility model discloses a unify all busbars 1 that are connected with the high voltage component 3 and integrate on insulating heat-conducting member 2 and the bottom surface of every busbar 1 all contacts with insulating heat-conducting member 2, made up this drawback.

In one or more embodiments, an electric assembly for power battery still include base 4, base 4 can be used to integrated electrical components and parts and aluminium bar etc.. The base 4 is disposed above the bus bar 1 and connected to the bus bar. Specifically, the base 4 is fixedly connected to the bus bar 1 by screws. In a preferred embodiment, the screw for fixedly connecting the busbar 1 to the high-voltage component 3 can simultaneously fixedly connect the base 4 to the busbar 1.

In one or more embodiments, the electrical assembly for a power battery of the present invention further includes a heat conducting member 5, and the heat conducting member 5 may be a heat conducting pad or a heat conducting plate. The upper surface of the heat conducting member 5 is in contact with the insulating heat conducting member 2, and the lower surface of the heat conducting member 5 is in contact with a cooling plate (not shown) of the power battery. The utility model discloses a make the upper surface of heat-conducting piece 5 and the contact of insulating heat-conducting piece 2 and the lower surface of heat-conducting piece 5 and power battery's cooling plate contact, can derive the heat in the busbar 1 via insulating heat-conducting piece 2, heat-conducting piece 5 and power battery's cooling plate fast in proper order.

The previous description of the disclosed aspects is provided to enable any person skilled in the art to practice the present invention. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the invention. Thus, the present invention is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electrical assembly for a power cell comprising an insulating thermally conductive member and at least two busbars, all of said busbars being integrated on said insulating thermally conductive member and a bottom surface of each of said busbars being in contact with said insulating thermally conductive member.

2. The electrical assembly for a power cell of claim 1, wherein said bus bar is made of aluminum.

3. The electrical assembly for a power cell of claim 1, wherein said bus bar is integrated into an upper surface of said insulating and thermally conductive member by one of thermoplastic, cold pressing, and adhesive bonding.

4. The electrical assembly for a power battery of claim 1, further comprising a base disposed above and connected to the bus bar.

5. The electrical assembly for a power cell of claim 4, wherein the base is fixedly connected to the bus bar by a threaded member.

6. The electrical assembly for a power cell of claim 1, further comprising a thermally conductive member, an upper surface of the thermally conductive member being in contact with a lower surface of the insulative thermally conductive member.

7. The electrical assembly for a power battery of claim 6, wherein a lower surface of the thermally conductive member is in contact with a cooling plate of the power battery.

8. The electrical assembly for a power cell of claim 1, further comprising a high voltage component, said high voltage component being connected to said bus bar.

9. A power cell, characterized by comprising an electrical assembly according to any one of claims 1 to 8.