CN216872082U

CN216872082U - BDU negative pole module

Info

Publication number: CN216872082U
Application number: CN202120665407.1U
Authority: CN
Inventors: 王安民; 李超; 汪莲莲; 韩廷; 祝加林; 卢雪梅; 陈坤伦
Original assignee: Hefei Guoxuan High Tech Power Energy Co Ltd
Current assignee: Hefei Gotion High Tech Power Energy Co Ltd
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2022-07-01
Anticipated expiration: 2031-03-31

Abstract

The utility model provides a BDU negative pole module, which comprises a shell, and a main negative contactor, a heating contactor, a fuse, a first copper bar and a second copper bar which are arranged in the shell; the shell is provided with an output negative interface, a battery negative interface and a heating negative interface; the main negative contactor is provided with a positive contact and a negative contact; one end of the heating contactor is connected with the positive contact, the other end of the heating contactor is connected with the fuse through a cable, and the fuse is connected with the heating negative interface through the cable; the two ends of the first copper bar are respectively connected with the output negative interface and the positive contact, and the two ends of the second copper bar are respectively connected with the battery negative interface and the negative contact. The BDU negative pole module is independently designed, so that the size of the BDU is greatly reduced, the adaptation degree of different vehicle types is improved, the development cost is saved, and the BDU negative pole module has high popularization and application values.

Description

BDU negative pole module

Technical Field

The utility model relates to the technical field of new energy electric automobiles, in particular to a BDU negative electrode module.

Background

The Battery pack disconnection Unit (BDU) is a power supply disconnection Unit specially designed for the interior of a Battery pack, provides functions of charge and discharge control, high-voltage component power-on control, circuit overload and short circuit protection, current acquisition and the like for a high-voltage system of a new energy electric vehicle, and protects and monitors the running state of the high-voltage system.

Most of BDUs on the market are directionally developed for a specific battery system, the size is large, the appearance adaptability is poor, different vehicle types are often required to be matched and developed again for corresponding BDUs, and the problems that the research and development cost is high, the development period is long, the mold resources are wasted, the enterprise development cost is increased and the like are caused.

SUMMERY OF THE UTILITY MODEL

Based on the technical problems in the background art, the BDU negative electrode module provided by the utility model is characterized in that: the device comprises a shell, a main negative contactor, a heating contactor, a fuse, a first copper bar and a second copper bar, wherein the main negative contactor, the heating contactor, the fuse, the first copper bar and the second copper bar are arranged in the shell; the lower shell is provided with an output negative interface, a battery negative interface and a heating negative interface; the main negative contactor is provided with a positive contact and a negative contact;

one end of the heating contactor is connected with the positive contact, the other end of the heating contactor is connected with the fuse through a cable, and the fuse is connected with the heating negative interface through the cable; the first copper bar is respectively connected with the output negative interface and the positive contact, and the second copper bar is respectively connected with the battery negative interface and the negative contact.

Preferably, the device also comprises a current sensor and a bracket; the current sensor is arranged on the shell through a support and is positioned above the second copper bar.

Preferably, the housing comprises an upper housing and a lower housing; go up the casing and pass through the buckle installation with lower casing together, main burden contactor, fuse, current sensor, heating contactor, support, first copper bar, second copper bar all set up between last casing and lower casing.

Preferably, the device further comprises a first protective cover and a second protective cover; first protective cover, second protective cover all rotate to be installed on last casing, and first protective cover, second protective cover are established respectively on output negative interface, battery negative interface.

According to the BDU negative electrode module provided by the utility model, the BDU negative electrode module is independently designed, so that the volume of the BDU is greatly reduced, the adaptability of different vehicle types is improved, the development cost is saved, and the BDU negative electrode module has high popularization and application values.

Drawings

Fig. 1 is a schematic three-dimensional structure diagram of a BDU negative electrode module according to the present invention;

fig. 2 is a schematic diagram of an internal structure of a BDU negative electrode module according to the present invention;

fig. 3 is a schematic structural diagram of an upper housing of a BDU negative electrode module according to the present invention.

Detailed Description

Referring to fig. 1-3, the utility model provides a BDU negative electrode module, which comprises an upper shell 3, a lower shell 1, a main negative contactor 8, a fuse 15, a current sensor 11, a first copper bar 6 and a second copper bar 10; the lower shell 1 is provided with an output negative interface 5, a battery negative interface 12 and a heating negative interface 13; the main negative contactor 8 is provided with a positive contact 7 and a negative contact 9;

one end of the heating contactor 16 is connected with the positive contact 7, the other end of the heating contactor 16 is connected with the fuse 15 through a cable, and the fuse 15 is connected with the heating negative interface 13 through a cable;

the first copper bar 6 is respectively connected with the output negative interface 5 and the positive contact 7, and the second copper bar 10 is respectively connected with the battery negative interface 12 and the negative contact 9.

In a particular embodiment, a heating contactor 16 and a support 14; the current sensor 11 is arranged on the shell through a bracket 14 and is positioned above the second copper bar 10

In a specific embodiment, the upper housing 3 and the lower housing 1 are mounted together by a snap fit, and the main negative contactor 8, the fuse 15, the current sensor 11, the heating contactor 16, the bracket 14, the first copper bar 6 and the second copper bar 10 are all disposed between the upper housing 3 and the lower housing 1.

In a particular embodiment, a first protective cover 2 and a second protective cover 4 are also included; first protective cover 2 and second protective cover 4 homoenergetic rotate to be installed on last casing 3, and first protective cover 2, second protective cover 4 cover respectively and establish on output negative interface 5, battery negative interface 12 for prevent to electrocute.

In the specific embodiment, the negative electrode module and the positive electrode module are separated, and the independent negative electrode module is designed, so that the volume of the BDU is greatly reduced, the adaptation degree of different vehicle types is improved, the use of grinding tools is reduced, and the development cost is saved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. A BDU negative pole module which characterized in that: the device comprises a shell, and a main negative contactor (8), a heating contactor (16), a fuse (15), a first copper bar (6) and a second copper bar (10) which are arranged in the shell; the shell is provided with an output negative interface (5), a battery negative interface (12) and a heating negative interface (13); the main negative contactor (8) is provided with a positive contact (7) and a negative contact (9);

one end of the heating contactor (16) is connected with the positive contact (7), the other end of the heating contactor (16) is connected with the fuse protector (15) through a cable, and the fuse protector (15) is connected with the heating negative interface (13) through a cable;

the two ends of the first copper bar (6) are respectively connected with the output negative interface (5) and the positive contact (7), and the two ends of the second copper bar (10) are respectively connected with the battery negative interface (12) and the negative contact (9).

2. The BDU negative electrode module of claim 1, wherein: the device also comprises a current sensor (11) and a bracket (14); the current sensor (11) is arranged in the shell through a support (14) and is positioned above the second copper bar (10).

3. A BDU negative electrode module according to claim 1 or claim 2, wherein: the shell comprises an upper shell (3) and a lower shell (1); go up casing (3) and lower casing (1) and pass through the buckle installation together, main negative contactor (8), fuse (15), current sensor (11), heating contactor (16), support (14), first copper bar (6), second copper bar (10) all set up between last casing (3) and lower casing (1).

4. A BDU negative pole module of claim 3, wherein: the device also comprises a first protective cover (2) and a second protective cover (4); first protective cover (2), second protective cover (4) all rotate to be installed on last casing (3), and first protective cover (2), second protective cover (4) cover respectively and establish on output burden interface (5), battery burden interface (12).