CN214124052U

CN214124052U - Electric connection device and electric box of battery system

Info

Publication number: CN214124052U
Application number: CN202120368328.4U
Authority: CN
Inventors: 黄城; 朱仁杰; 刘博渊
Original assignee: Sinochem International Corp
Current assignee: Sinochem International Corp
Priority date: 2021-02-07
Filing date: 2021-02-07
Publication date: 2021-09-03
Anticipated expiration: 2031-02-07

Abstract

The utility model discloses an electric connecting device and electric box of battery system, electric connecting device include that public end is female arranges and female end is female arranges, public end female arrange with female end female the arranging electricity of arranging is connected, public end female arranging has the bellying, female end female arranging has the depressed part, public end female arranging with female end female arranging passes through the bellying is inserted and is located the depressed part forms the block and connects, the female other end of arranging of public end is used for being connected with battery module electricity, female end female arranging is kept away from public end female arranged one end is used for being connected with power connector. This electric connection device arranges and female the female block of arranging through public end and is connected, realizes battery module and power connector's quick electricity and is connected, has also realized simultaneously that public end is female arranges to be connected with female quick plug of arranging of end, has improved the installation effectiveness, compares with traditional bolted connection, at the in-process of installation and dismantlement, all need not the instrument, easy operation, convenience.

Description

Electric connection device and electric box of battery system

Technical Field

The utility model relates to an electric connecting device and electric box of battery system.

Background

Electric vehicles are increasingly popular with users, so that the demand of a power battery system used by being paired with the electric vehicle is correspondingly increased. When more electric automobiles are produced, enough power battery systems need to be equipped, which puts higher requirements on the production efficiency of the battery systems. The electric automobile is connected with the battery module through an electric box, and the electric box is a key core part of the power battery system. The electrical box includes a high voltage connector (also known as a power connector) that includes a high voltage harness and a control harness. The high-voltage wiring harness is used for electrically connecting the high-voltage connector to the electrical box, the control wiring harness is electrically connected to the electrical box, and the control wiring harness is used for conveying control signals. The existing high-voltage wire harness is connected with the conventional nut and the conventional bolt, and needs to be installed and disassembled by means of an external special tool, so that the installation efficiency is low, an extra operation space is needed, and the user experience is poor. How to accurately and more quickly install a high-voltage wiring harness in a high-voltage connector on an electrical box becomes a problem which needs to be solved urgently. Meanwhile, the control wire harness is usually fixed by bolts, so that the installation is complicated and the use is inconvenient.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an electric connection device and electric box of battery system in order to overcome the defect that is used for battery system's high-pressure pencil connection efficiency to hang down among the prior art.

The utility model discloses an above-mentioned technical problem is solved through following technical scheme:

the utility model provides an electric connection device of battery system, its includes female arranging of public end and female arranging of female end, female arranging of public end with female arranging of female end is connected, female arranging of public end has the bellying, female arranging of female end has the depressed part, female arranging of public end with female arranging of female end passes through the bellying is inserted and is located the depressed part forms the block and connects, female other end of arranging of public end is used for being connected with battery module electricity, female arranging of female end is kept away from female one end of arranging of public end is used for being connected with power connector.

In this scheme, this electric connection device arranges through public end mother and arranges the block with female end mother and be connected, realizes battery module and power connector's quick electricity and is connected, has also realized simultaneously that public end mother arranges to be connected with female end mother can quick plug, has improved the installation effectiveness, compares with traditional bolted connection, at the in-process of installation with the dismantlement, all need not the instrument, easy operation, convenience.

Preferably, the surface of the joint portion between the male end busbar and the female end busbar is plated with silver.

In this scheme, adopt above-mentioned structural style, form silver-silver and connect, compare traditional copper-copper connection, copper-aluminum connection, aluminium-aluminum and be connected with better high-pressure linkage effect, contact resistance is little, and the temperature rise is little, can repetitious plug, increase of service life many times. Preferably, the material of the male end busbar and the female end busbar is silver.

Preferably, the electrical connection device further comprises an elastic element, the elastic element is arranged inside the concave part, and the elastic element is used for pressing the convex part and the concave part.

In this scheme, adopt above-mentioned structural style, female arranging electricity of female arranging of public end is connected inseparabler, reliable. If the male-end busbar and the female-end busbar are in virtual connection, heat is generated or electric sparks are generated in a joint area of the male-end busbar and the female-end busbar, so that potential safety hazards are caused.

Preferably, the electrical connection device further comprises an elastic element, the elastic element is arranged inside the concave portion, the elastic element is arranged on both sides of the concave portion, the two elastic elements press the convex portion from both sides of the convex portion, and the male end busbar is electrically connected with the female end busbar through the elastic element.

In this scheme, because the both sides of depressed part all are provided with elastic element, even female arranging of public end has a small amount of dislocation when timing with female arranging of female end, also can realize the butt joint of bellying and depressed part through elastic element's elastic deformation, still realize the female reliable electricity that arranges with female arranging of end of public end simultaneously and be connected.

Preferably, the electrical connection device further comprises a male end housing and a female end housing, at least one end of the male end bus bar is embedded into the male end housing, at least one end of the female end bus bar is embedded into the female end housing, and the male end housing is connected with the female end housing in a clamping manner.

In the scheme, the male end shell is used for fixing the male end busbar and forming protection, and the female end shell is used for fixing the female end busbar and forming protection. The male end shell and the female end shell are connected in a clamping mode to achieve mutual fixation, meanwhile, connection between the male end bus bar and the female end bus bar is fixed, and reliability of the electric connection device is improved. Preferably, the material of public end shell and female end shell is insulating material, prevents that high-tension electricity from leaking, improves the security.

Preferably, the outer surface of the male end housing is provided with a retaining ring, the outer surface of the female end housing is provided with a clamping part protruding outwards, and the male end housing and the female end housing are inserted into the retaining ring through the clamping part to form clamping connection.

In this scheme, adopt above-mentioned structural style, form quick plug structure, be convenient for install fast and dismantle, improve assembly efficiency. In other alternatives, the arrangement positions of the buckling part and the buckle ring can be interchanged.

Preferably, at least a portion of the female end housing is inserted into the male end housing.

In this scheme, adopt above-mentioned structural style, female end shell and public end shell can fix a position fast through the male mode, and public end shell also forms the protection to female end shell simultaneously. In other alternatives, at least a portion of the male end housing may be inserted within the female end housing.

An electrical box comprises a power connector and further comprises the electrical connection device of the battery system, and a power line of the power connector is connected to the electrical box through the electrical connection device.

In this scheme, the power supply line of the power supply connector is a high-voltage connection harness. The both ends of high-voltage wiring harness are connected respectively in the female one end of arranging of power connector and female end, and female other end of arranging is inlayed in female end shell and is connected with female one end block of arranging of public end, and the female other end of arranging of public end is installed on electric box, realizes that power connector and battery module's quick plug are connected, easy to assemble and dismantlement. In other alternative schemes, the end of the high-voltage wire harness is connected to the male end busbar, the female end busbar is installed on the electrical box, and the power connector and the electrical box are inserted into the female end busbar through the male end busbar to form rapid pluggable connection.

Preferably, the electrical box includes a housing, a clamping groove is formed in an outer surface of the housing, the power connector has a control wire, a clamping block is arranged at an end of the control wire, and the electrical box and the control wire are inserted into the clamping groove through the clamping block to form a clamping connection.

In this scheme, adopt above-mentioned structural style, the draw-in groove is gone into to the control line through the quick card of fixture block, realizes and electric box's casing quick fixation, and the installation need not the instrument with the dismantlement, easy operation, convenience. Preferably, the card slot is integrally formed with the housing. In other alternative schemes, the arrangement positions of the clamping groove and the clamping block can be interchanged.

Preferably, the housing has a first inlay chamber, a second inlay chamber, a third inlay chamber and a fourth inlay chamber, the first inlay chamber is used for inlaying the current sensor, the second inlay chamber is used for inlaying the fuse, the third inlay chamber with the fourth inlay chamber is used for inlaying the contactor.

In the scheme, different cavities are arranged on the shell of the electrical box and used for arranging and fixing different devices, so that the installation space is saved, more parts can be arranged under the condition of the same volume, and the integration level of the electrical box is improved.

On the basis of the common knowledge in the field, the above preferred conditions can be combined at will to obtain the preferred embodiments of the present invention.

The utility model discloses an actively advance the effect and lie in: this electric connection device arranges and female the female block of arranging through public end and is connected, realizes battery module and power connector's quick electricity and is connected, has also realized simultaneously that public end is female arranges to be connected with female quick plug of arranging of end, has improved the installation effectiveness, compares with traditional bolted connection, at the in-process of installation and dismantlement, all need not the instrument, easy operation, convenience.

Drawings

Fig. 1 is a schematic structural diagram of an electrical box according to a preferred embodiment of the present invention.

Fig. 2 is a schematic structural diagram of the interior of an electrical box according to a preferred embodiment of the present invention.

Fig. 3 is an exploded schematic view of an electrical connection device according to a preferred embodiment of the present invention.

Fig. 4 is a schematic structural view of a male end bus bar according to a preferred embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a female end bus bar first viewing angle according to a preferred embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a female end bus bar at a second viewing angle according to a preferred embodiment of the present invention.

Fig. 7 is a schematic structural view of a male housing and a female housing according to a preferred embodiment of the present invention.

Fig. 8 is a partial structural diagram of a first viewing angle of the housing according to a preferred embodiment of the present invention.

Fig. 9 is a partial structural diagram of a second viewing angle of the housing according to a preferred embodiment of the present invention.

Description of reference numerals:

electrical connection device 1

Bus bar 11 of male terminal

Convex part 111

Male end housing 12

Retaining ring 121

Female end bus bar 13

Recess 131

Female end housing 14

Latch 141

Elastic element 15

Electrical box 2

Power supply connector 21

Power line 211

Control line 212

Housing 22

Card slot 221

Joining region A

Fixed zone B

Bearing area C

First inlay cavity 23

Second damascene cavity 24

Third damascene cavity 25

Fourth damascene cavity 26

Current sensor 27

Fuse 28

Contactor 29

Detailed Description

The present invention will be more clearly and completely described below by way of examples and with reference to the accompanying drawings, but the present invention is not limited thereto.

As shown in fig. 1 to 9, the present embodiment discloses an electrical connection device and an electrical box for a battery system. This electric connecting device 1 includes female row 11 of public end and female arranging 13 of end, female arranging 11 of public end is connected with female arranging 13 electricity of end, female arranging 11 of public end has bellying 111, female arranging 13 of end has depressed part 131, female arranging 11 of public end and female arranging 13 of end insert through bellying 111 and locate the depressed part 131 and form the block connection, female arranging 11's of public end other end is used for being connected with the battery module electricity, female arranging 13 of end keeps away from female arranging 11 one end of end and is used for being connected with power connector 21. This electric connecting device 1 arranges 11 and female 13 block connection through public end, realizes battery module and power connector 21's quick electricity and is connected, has also realized simultaneously that female arranging 11 of public end and female arranging 13 of female end can plug fast and be connected, has improved the installation effectiveness, compares with traditional bolted connection, at the in-process of installation and dismantlement, all need not the instrument, easy operation, convenience.

A male end bus bar 11 and a female end bus bar 13 are paired into a group, and users can be arranged into multiple groups according to needs. In this embodiment, the two male-end busbars 11 and the two female-end busbars 13 are used in pairs.

Preferably, the surface of the joint of the male end busbar 11 and the female end busbar 13 is plated with silver to form silver-silver connection. Compared with the traditional copper-copper connection, copper-aluminum connection and aluminum-aluminum connection, the silver-silver connection has better high-voltage connection effect, small contact resistance and small temperature rise, can be repeatedly plugged and pulled for many times, and prolongs the service life. Furthermore, the male end busbar 11 and the female end busbar 13 are made of silver.

As shown in fig. 5-6, the electrical connection device 1 further includes an elastic element 15, the elastic element 15 is disposed inside the concave portion 131, and the elastic element 15 is used for compressing the convex portion 111 and the concave portion 131, so that the electrical connection between the male end busbar 11 and the female end busbar 13 is tighter and more reliable. If the male end busbar 11 and the female end busbar 13 are connected in a virtual manner, when a large current flows, heat is generated or electric sparks are generated in a joint area of the male end busbar 11 and the female end busbar 13, so that potential safety hazards are caused. Preferably, both sides of the recess 131 are provided with the elastic members 15, and both elastic members 15 are pressed inward from both sides of the protrusion 111. Because the elastic elements 15 are arranged on both sides of the concave portion 131, even if the male end busbar 11 and the female end busbar 13 are slightly dislocated during alignment, the convex portion 111 and the concave portion 131 can be aligned through elastic deformation of the elastic elements 15. In this embodiment, the elastic element 15 is a spring washer, and the material of the elastic element 15 is the same as that of the female end bus bar 13, so that the male end bus bar 11 can be electrically connected with the female end bus bar 13 through the elastic element 15.

As shown in fig. 7. To improve safety, the electrical connection device 1 further comprises a male end housing 12 and a female end housing 14. One end of at least one male end bus bar 11 is embedded into a male end shell 12, and the male end shell 12 is used for fixing the male end bus bar 11 and forming protection. One end of at least one female end busbar 13 is embedded into a female end shell 14, and the female end shell 14 is used for fixing the female end busbar 13 and forming protection. Preferably, the male housing 12 and the female housing 14 are made of insulating materials, so as to prevent high voltage from leaking and improve safety. The male housing 12 and the female housing 14 may be integrally formed by injection molding polypropylene. The male end shell 12 and the female end shell 14 are clamped and connected to form mutual fixation, and meanwhile, the male end bus bar 11 and the female end bus bar 13 are connected to form fixation, so that the reliability of the connecting device is improved. Specifically, the outer surface of the male end housing 12 is provided with a snap ring 121, the outer surface of the female end housing 14 is provided with a fastening part 141 protruding outwards, and the male end housing 12 and the female end housing 14 are inserted into the snap ring 121 through the fastening part 141 to form a snap connection, so that a quick plugging structure is formed, quick installation and disassembly are facilitated, and the assembly efficiency is improved. In other alternative embodiments, the outer surface of the male housing 12 is provided with the snap 141 and the outer surface of the female housing 14 is provided with the snap ring 121. The fastening portion 141 is an elastic body, and the fastening portion 141 can be quickly inserted into or separated from the retaining ring 121 through elastic deformation, so that the assembling and disassembling efficiency is improved.

Further, at least a portion of the female end housing 14 is inserted within the interior of the male end housing 12. The female housing 14 and the male housing 12 are inserted to achieve quick positioning, and the male housing 12 protects the female housing 14. In other alternative embodiments, at least a portion of the male end housing 12 may be inserted into the female end housing 14.

As shown in fig. 1 and 2. The present embodiment also discloses an electrical box 2 including a power connector 21 and a housing 22. The electrical box 2 further includes the electrical connection device 1 of the battery system described above, and the power line 211 of the power connector 21 is connected to the electrical box 2 through the electrical connection device 1.

To facilitate the optimization of the structure and assembly of the electrical box 2, a connection area a, a fixation area B and a bearing area C are provided on the housing 22. The connection area a is used for providing the electrical connection device 1, and the electrical connection device 1 is embedded on the housing 22 through the female housing 14, so that quick installation is realized. The power supply connector 21 has a power supply line 211 and a control line 212. The power cord 211 is also called a high voltage harness.

In this embodiment, two ends of the high voltage wire harness are respectively connected to one end of the power connector 21 and the female end bus bar 13, the other end of the female end bus bar 13 is embedded in the female end housing 14 and is connected with one end of the male end bus bar 11 in a clamping manner, the other end of the male end bus bar 11 is installed on the electrical box, and the quick plug connection between the power connector 21 and the battery module is realized, so that the installation and the disassembly are convenient. In other alternative embodiments, the end of the high-voltage wire harness is connected to the male bus bar 11, the female bus bar 13 is installed on the electrical box 2, and the power connector 21 and the electrical box 2 are connected in a quick pluggable manner by inserting the male bus bar 11 into the female bus bar 13.

As shown in fig. 2 and 8, the fixing area B is used for connecting the control line 212 of the power connector 21 with the electrical box. The control line 212 is mainly used for transmitting a control signal for determining the interlocking state of the power connector 21 and the plug of the automobile, so the control line 212 is called an interlocking harness. In order to quickly connect the control wire 212 in the fixing area B, a clamping groove 221 is formed in the outer surface of the housing 22, a clamping block (not shown) is arranged at the end of the control wire 212, and the electrical box 2 and the control wire 212 are clamped and connected by inserting the clamping block into the clamping groove 221. The latch of the prior art can be used, and the latch can be engaged with the latch groove 221 only by matching. The control wire 212 can be quickly clamped into the clamping groove 221 through the clamping block, so that the control wire is quickly fixed with the shell 22 of the electrical box, tools are not needed in installation and disassembly, and the operation is simple and convenient. Preferably, the card slot 221 is integrally formed with the housing 22. In other alternative embodiments, the positions of the card slot 221 and the latch may be interchanged.

As shown in fig. 9, the carrier region C is used to optimize the layout of the electrical components. For the fixation of the electric components of the carrier region C, a first damascene cavity 23, a second damascene cavity 24, a third damascene cavity 25 and a fourth damascene cavity 26 are provided on the housing 22. The first damascene cavity 23 is used for damascene current sensor 27, the second damascene cavity 24 is used for damascene fuse 28, and the third damascene cavity 25 and the fourth damascene cavity 26 are used for damascene contact 29. Different cavities are arranged on the shell 22 of the electrical box for arranging and fixing different devices, so that the installation space is saved, more components can be arranged under the condition of the same volume, and the integration level of the electrical box 2 is improved.

Although specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that this is by way of example only and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.

Claims

1. The utility model provides an electric connection device of battery system, its characterized in that, it includes female arranging of public end and female arranging of female end, female arranging of public end with female arranging of female end is connected, female arranging of public end has the bellying, female arranging of female end has the depressed part, female arranging of public end with female arranging of female end passes through the bellying is inserted and is located the depressed part forms the block and connects, female arranging's of public end other end is used for being connected with battery module electricity, female arranging of female end is kept away from female arranging of public end one end is used for being connected with power connector.

2. The electrical connection device for battery system as claimed in claim 1, wherein the surface of the junction of the male terminal bus bar and the female terminal bus bar is plated with silver.

3. The electrical connection device for battery system as claimed in claim 1, further comprising an elastic member provided inside the recess for pressing the protrusion against the recess.

4. The electrical connection device of the battery system according to claim 1, further comprising an elastic element, wherein the elastic element is disposed inside the concave portion, the elastic element is disposed on both sides of the concave portion, the two elastic elements press the convex portion from both sides of the convex portion, and the male end busbar is electrically connected to the female end busbar through the elastic element.

5. The electrical connection device of claim 1, further comprising a male end housing and a female end housing, wherein one end of at least one of the male end busbars is embedded in the male end housing, one end of at least one of the female end busbars is embedded in the female end housing, and the male end housing is connected with the female end housing in a snap-fit manner.

6. The electrical connection device for battery system as claimed in claim 5, wherein the outer surface of the male housing is provided with a snap ring, the outer surface of the female housing is provided with a snap portion protruding outwards, and the male housing and the female housing are inserted into the snap ring through the snap portion to form a snap connection.

7. The electrical connection device for battery systems as claimed in claim 5, wherein at least a portion of the female terminal housing is inserted into the interior of the male terminal housing.

8. An electrical box comprising a power connector, characterized in that the electrical box further comprises electrical connection means of the battery system according to any of claims 1-7, through which electrical connection means a power line of the power connector is connected to the electrical box.

9. The electrical box according to claim 8, wherein the electrical box comprises a housing, a clamping groove is formed in an outer surface of the housing, the power connector has a control wire, a clamping block is arranged at an end of the control wire, and the electrical box and the control wire are connected in a clamping manner by inserting the clamping block into the clamping groove.

10. The electrical box of claim 9, wherein the housing has a first inlay cavity for embedding a current sensor, a second inlay cavity for embedding a fuse, a third inlay cavity and a fourth inlay cavity for embedding a contact.