CN218385473U

CN218385473U - BDU module and have its power battery package

Info

Publication number: CN218385473U
Application number: CN202222586840.3U
Authority: CN
Inventors: 丁瑞卿
Original assignee: China Lithium Battery Technology Co Ltd
Current assignee: China Lithium Battery Technology Co Ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2023-01-24
Anticipated expiration: 2032-09-28

Abstract

The utility model provides a BDU module and have its power battery package. The BDU module comprises a shell, an electric element arranged in the shell and a direct connection conductive piece; the shell is provided with a limiting opening, the direct connection conductive piece is provided with an external connection port, and the external connection port extends out of the limiting opening and is used for connecting the electric element with the conductive terminal of the power battery pack. The BDU module restrains the direct-connection conductive piece through a limit port of a shell of the BDU module, and vibration or looseness of the direct-connection conductive piece in the operation process of the power battery pack is avoided; meanwhile, the conductive terminals of the power battery pack are connected with the electrical elements in the BDU module through the direct-connection conductive parts, so that the space occupancy rate of the direct-connection conductive parts in the battery pack is reduced, and the maximization of the space utilization rate in the battery pack and the further improvement of the energy density value of the battery are facilitated.

Description

BDU module and have its power battery package

Technical Field

The utility model relates to a battery technology field, concretely relates to BDU module and have its power battery package.

Background

The BDU (Battery Disconnect Unit, the Battery package Unit that opens circuit, also is a distribution box) is as the core electrical control Unit of Battery package), and its main function is integrated the interior electrical components of Battery package, provides mounting structure to play the guard action to each components and parts, prevent that high-voltage components and parts from being touched by mistake, played the effect of partial shipment in advance simultaneously, shortened assembly cycle greatly and reduced the personnel's injury that the high pressure when assembling caused. The BDU is complex to assemble and occupies a certain installation space inside the power battery.

At present, power battery package and BDU adopt split type structural design usually, but consequently also have a lot of drawbacks, for example:

1) The BDU internal wiring harness and the battery pack internal acquisition wiring harness need to be switched through the switching plug-in unit, so that the types of materials in the battery pack are increased, the BDU occupies a large space due to the fact that the plugging space of the switching plug-in unit and the mounting position of the switching plug-in unit need to be considered, the utilization rate of the whole pack of space is not facilitated, and the energy density of the whole pack is reduced; in addition, the wiring harness needs to be switched by the switching plug-in unit, so that the whole package of switching points is increased, the collection failure risk caused by the bad switching points is increased, the internal resistance of the whole loop is increased due to the switching points, and the collection precision is further influenced.

2) The BDU module and the external conductive terminals are connected in a switching mode through the copper bars arranged outside the BDU module, so that the length of the copper bars is often too long, and the connection is unstable due to vibration in the use process of the battery pack; meanwhile, the overlong copper bar can occupy the internal space of the battery pack, so that the space utilization rate and the energy density value of the battery are difficult to be effectively utilized to the maximum extent.

Therefore, how to reduce the occupied space of the BDU and the related connecting materials thereof and improve the stability of the copper bar switching between the BDU module and the conductive terminals of the power battery pack is a technical problem to be solved urgently in the industry.

SUMMERY OF THE UTILITY MODEL

For solving prior art's above-mentioned defect, the utility model provides a BDU module to and have its power battery package.

The BDU module comprises a shell, an electric element arranged in the shell and a direct-connection conductive piece;

the shell is provided with a limiting opening, the direct connection conductive piece is provided with an external connection port, and the external connection port extends out of the limiting opening and is used for connecting the electric element with the conductive terminal of the power battery pack.

The utility model provides a BDU module directly links electrically conductive piece through spacing mouthful on the shell in internally locating the shell and carries out spacing restraint, has avoided directly linking electrically conductive piece at the vibrations of battery package operation in-process, has improved its and outside conductive terminal's electric connection stability. Meanwhile, the electric elements are integrally arranged in the shell, so that scattered installation of the electric elements is avoided, and the installation convenience is improved.

By adopting the power battery pack with the BDU module with the structure, the conductive terminals (such as the wiring terminal, the wiring terminal of the BMS, the positive and negative electrode connectors on the battery box body and the like) can be connected with the electrical elements in the BDU module through the direct-connection conductive piece, so that the space occupancy rate of the direct-connection conductive piece in the battery pack is reduced, the maximization of the space utilization rate in the battery pack is facilitated, and the further improvement of the energy density value of the battery is facilitated.

Drawings

Fig. 1 is a schematic diagram of an overall structure of a BDU module provided by the present invention;

fig. 2 is a schematic structural view of the BDU module shown in fig. 1 with the cover removed;

FIG. 3 is an enlarged view of portion A of FIG. 2;

fig. 4 is an enlarged schematic view of a portion B in fig. 1.

Wherein the reference numerals have the following meanings:

1. a BDU module; 01. a base; 02. an upper cover; 03. directly connecting the conductive parts; 04. a limiting surface; 05. a mounting surface; 11. a fixed end; 121. a limiting port; 06. a limit buckle; 07. a BDU wire harness; 06. a battery pack harness.

Detailed Description

For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

In the description of the present invention, it should be noted that, if the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are referred to the orientation or positional relationship indicated based on the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

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 in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions. The embodiment of the utility model provides a technical scheme that describes is applicable to the battery and uses the consumer of battery. The electric device may be a vehicle, a mobile phone, a portable device, etc., but is not limited thereto. The embodiment of the utility model provides a do not special restriction to above-mentioned consumer.

The present invention will be described in further detail with reference to the accompanying drawings.

The utility model provides a BDU module 1, as shown in FIG. 1, its direct-connected electric piece 03 including the shell that adopts insulating material to make, the electric element of integration in the shell and locating the shell, electric element includes relay, high/low voltage control, fuse etc. all belongs to prior art, no longer gives unnecessary detail here.

Specifically, the housing includes a base 01 and an upper cover 02 that can be fastened and fixed with the base 01, and the base 01 and the upper cover 02 enclose to form a limiting opening 121, as shown in fig. 4; the external connection port (not shown by a reference numeral) of the direct connection conductive member 03, which is used for being connected with the conductive terminal of the power battery pack, extends out of the limiting port 121, and the conductive terminal includes, but is not limited to, a connection terminal of a BMS, and a positive and negative plug on a battery case.

Specifically, the cross-sectional area of the limiting opening 121 is larger than that of the direct-connection conductive member 03, so that the direct-connection conductive member 03 can be conveniently inserted and fixed; furthermore, a buffer (not shown by reference numeral due to the view angle of the drawing) is disposed between the limiting opening 121 and the direct-connection conductive component 03 for buffering and fixing the direct-connection conductive component 03. The buffer member may be silicone or foam, but is not limited thereto. Particularly, the buffer is disposed on the limiting opening 121, or on the outer surface of the direct-connection conductive element 03, or on both the limiting opening 121 and the direct-connection conductive element 03.

Still further, as shown in fig. 2 and 3, a base 01 is provided with a limiting seat, the limiting seat includes a mounting surface 05 and a limiting surface 04 located between the mounting surface 05 and an inner bottom surface of the base 01, the mounting surface 05 is provided with a connecting hole for fixing an electrical element or a direct-connection conductive element 03 by a fastening bolt (not shown), fig. 3 of the embodiment illustrates that the direct-connection conductive element 03 is fixed, and a vertical height of the mounting surface 05 relative to the inner bottom surface of the base 01 is greater than a vertical distance between a fixed end 11 of the electrical element and an external connection port, so as to facilitate assembly of various types of electrical elements on the base 01. Particularly, the limiting seat and the shell can be integrally formed.

Preferably, the direct-connection conductive member 03 may be a copper bar or an aluminum bar, and particularly may be a bent aluminum bar or a bent copper bar. Through the design of bending, can reduce directly connecting the space occupation of electrically conductive 03 in base 01, reduce its vibrations risk of following power battery package operation, make more showing compactly between each electric element simultaneously.

Further, referring to fig. 4, the bdu harness 07 and the power battery pack harness 06 are integrated on the base 01, and a limit buckle 08 is further disposed on the base 01 to facilitate fixing of the harnesses.

When traditional BDU module 1 connects power battery package, the direct connection conductive piece often is longer, and in the battery package operation process, this direct connection conductive piece shakes easily, can lead to its electric connection stability between the conductive terminal of battery package to receive the influence usually. Therefore, the BDU module 1 provided by the utility model is used for limiting and constraining the overlong direct-connection conductive member by arranging the limiting port 121 on the base 01, thereby avoiding the defect of unstable electrical connection between the BDU module and the conductive terminal due to vibration or looseness in the operation process of the power battery pack; meanwhile, the occupied space of connecting materials between the external conductive terminals of the electrical elements in the BDU module 1 is reduced; through with BDU pencil 07 and battery package pencil 06 integration locate the shell in, reduced the switching plug-in components use between the pencil for BDU module 1's whole volume is littleer, has improved the space utilization who wraps entirely from this.

The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by the arbitrary combination of the above technical features. It should be noted that modifications and embellishments could be made by those skilled in the art without departing from the inventive concept, and such modifications and embellishments are also considered to be within the scope of the present invention.

Claims

1. A BDU module (1) characterized by: comprises a shell, an electric element arranged in the shell and a direct connection conductive piece (03);

the shell is provided with a limiting opening (121), the direct connection conductive piece (03) is provided with an external connection port, and the external connection port extends out of the limiting opening (121) and is used for connecting the electric element with a conductive terminal of the power battery pack.

2. A BDU module (1) as claimed in claim 1, wherein: the cross section area of the limiting opening (121) is larger than that of the direct-connection conductive piece (03).

3. A BDU module (1) as claimed in claim 1 or 2 wherein the internal side walls of the limiting opening (121) and/or the external surface of the directly connected conducting member (03) are provided with a buffer.

4. A BDU module (1) according to claim 3, characterized in that said housing comprises a base (01) and an upper cover (02);

the base (01) and the upper cover (02) are enclosed to form the limiting opening (121).

5. A BDU module (1) according to claim 4, characterized in that the housing is made of an insulating material.

6. A BDU module (1) according to claim 4 or 5, characterized in that the base (01) is provided with a limiting seat comprising a mounting surface (05) and a limiting surface (04);

the mounting surface (05) is provided with a connecting hole for fixing an electric element or a direct connection conductive piece (03);

the limiting surface (04) is arranged between the mounting surface (05) and the inner bottom surface of the base (01);

the vertical height of the mounting surface (05) relative to the inner bottom surface of the base (01) is larger than the vertical distance between a fixed end (11) of the direct-connection conductive piece (03) and an external connection port.

7. The BDU module (1) according to claim 6, characterized in that the directly connected conductive pieces (03) are aluminum or copper bars.

8. A BDU module (1) according to claim 7, characterized in that said direct conductive members (03) are bent connectors.

9. A power battery pack, characterized by comprising a battery unit and a BDU module (1) according to any of claims 1-8.

10. The power battery pack according to claim 9, characterized in that the wiring harness of the BDU module (1) and the collection wiring harness of the battery unit are integrated within the housing.