CN215601064U

CN215601064U - Closed battery distribution unit integrating high-voltage acquisition and low-voltage control

Info

Publication number: CN215601064U
Application number: CN202121744256.5U
Authority: CN
Inventors: 刘强军; 宋军云; 张; 相江峰
Original assignee: Jiangxi Far East Battery Co ltd
Current assignee: Jiangxi Far East Battery Co ltd
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2022-01-21
Anticipated expiration: 2031-07-29

Abstract

The utility model relates to the field of new energy batteries, in particular to a closed battery distribution unit integrating high-voltage acquisition and low-voltage control, which comprises a BDU base, a BDU upper cover and electrical components arranged in the BDU base; a plurality of wire clamping grooves and hollow holes are formed in the BDU base; the BDU upper cover is provided with a battery connecting end, a high-voltage acquisition connector, a low-voltage control connector and a high-voltage connector end; the electric component and the copper bar are locked on the BDU base. The insulation problem of the high-voltage box can be effectively solved, so that the connection structure of the internal wire harness and the external wire harness in the Battery Distribution Unit (BDU) is simple, and the connection is convenient.

Description

Closed battery distribution unit integrating high-voltage acquisition and low-voltage control

Technical Field

The utility model relates to the field of new energy batteries, in particular to a closed Battery Distribution Unit (BDU) integrating high-voltage acquisition and low-voltage control.

Background

With the increasing development of energy crisis and environmental problems, the electric automobile industry has been rapidly developed, and electric automobiles have become a green, fashionable and economic trip mode. The battery is like the heart of the electric automobile, and the electric automobile needs the battery to continuously provide electric energy for the equipment such as a motor, a controller, electrical components and the like in the running process, so that the safe and efficient work of the battery determines the driving mileage and the driving experience of the electric automobile. Because the electric automobile has long running distance and high running speed, the battery is required to have quick charging and high-power output, and the essence of the battery is that the large current is quickly charged and discharged, a high-voltage box is required to disconnect and attract the passing current and voltage, and the safety of the battery pack is ensured.

There are generally two types of high pressure cell approaches, one open and one closed. The open high-voltage box is characterized in that the electric components are not protected at all and are directly connected by the high-voltage support and placed in the battery pack. The enclosed high-voltage box is that the electric components are in an insulated protective cover, and only the position connected with the outside is exposed. With the demand for quick charging and quick discharging of battery packs becoming higher and the required electric quantity of battery packs becoming higher and higher, the insulation requirements of current battery packs cannot be met by the open high-voltage box, and the insulation problem consideration needs to be more and more careful nowadays.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the present invention aims to provide a Battery Distribution Unit (BDU) that integrates high voltage acquisition and low voltage control, and can effectively solve the insulation problem of a high voltage box, so that the connection structure between the internal part and the external wire harness in the BDU is simple and convenient. The specific technical scheme is as follows:

a closed battery distribution unit integrating high-voltage acquisition and low-voltage control is disclosed, and comprises a BDU base, a BDU upper cover and electrical components arranged in the BDU base; a plurality of wire clamping grooves and hollow holes are formed in the BDU base; the BDU upper cover is provided with a battery connecting end, a high-voltage acquisition connector, a low-voltage control connector and a high-voltage connector end; the electric component and the copper bar are locked on the BDU base.

Further, the electrical components comprise a pre-charging relay, a Hall element, a flame switch and a fuse; the battery connecting end is connected with the fuse, is connected with the flame switch through the copper bar, passes through the Hall element again and reaches the relay, and is connected with an external high-voltage connector through the copper bar at last to form an integral closed circuit.

Further, the high-voltage acquisition wire harness is fixed through a wire clamping groove on the BDU base and converged into the high-voltage acquisition connector; the low-voltage control wire harness is fixed through a wire clamping groove in the BDU base and converged into the low-voltage control connector.

Further, the pre-charging resistor is arranged on the inner side of the BDU upper cover.

According to the utility model, after the electric element is assembled on the BDU base, the BDU base is limited and insulated according to the fixed position of the electric element and the connecting position of the copper bar; arranging all the high-voltage acquisition wiring harnesses into a high-voltage acquisition connector, arranging the low-voltage control wiring harnesses into a low-voltage control connector, and collecting the high-voltage acquisition wiring harnesses into a BMS (battery management system) through the opposite plug connector; the outside exposes with closed BDU copper bar hookup location. The utility model solves the insulation problem of the BDU, beautifies the appearance of the BDU and makes the trend of the wiring harness clear.

Drawings

FIG. 1 is a layout of the internal electrical components of the BDU base of the present invention;

FIG. 2 is a bottom layout view of the BDU base of the present invention;

FIG. 3 is a view of the outer side of the BDU upper cover of the present invention;

fig. 4 is a layout view of the inside of the upper cover of the BDU of the present invention.

Reference numerals:

1-a pre-charging relay, 2-a relay, 3-a Hall element, 4-a flame switch, 5-a fuse, 6-a wire clamping groove, 7-a hollow hole, 8-a battery connecting end, 9-a high-voltage acquisition connector, 10-a low-voltage control connector, 11-a high-voltage connector end and 12-a pre-charging resistor.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-4: a closed battery dispensing unit that integrates high voltage collection and low voltage control: the Battery Distribution Unit (BDU) comprises a BDU base, a BDU upper cover and electric components placed in the BDU base; a plurality of wire clamping grooves 6 and hollow holes 7 are formed in the BDU base; the BDU upper cover is provided with a battery connecting end 8, a high-voltage acquisition connector 9, a low-voltage control connector 10 and a high-voltage connector end 11; the electric component and the copper bar are locked on the BDU base.

The electric components comprise a pre-charging relay 1, a relay 2, a Hall element 3, a flame switch 4, a fuse 5 and a pre-charging resistor 12; the battery connecting end 8 is connected with the fuse 5, is connected with the flame switch 4 through the copper bar, passes the Hall element 3 again and reaches the relay 2, and is connected with an external high-voltage connector through the copper bar at last to form an integral closed loop.

The high-voltage acquisition wire harness is fixed through a wire clamping groove on the BDU base and converged into the high-voltage acquisition connector 9; the low-voltage control wire harness is fixed through a wire clamping groove in the BDU base and converged into the low-voltage control connector 10. The pre-charge resistor 12 is mounted inside the BDU upper cover.

In the process of charging the battery pack, the battery pack is pre-charged through a pre-charging resistor and a pre-charging relay 1, so that the damage to an anode relay caused by overlarge charging current is prevented; the pre-charging resistor is radiated through the hollowed holes 7 on the base, so that the BDU is ensured to be uniformly radiated; the secondary battery end is connected with a fuse 5, is connected with a flame switch 4 through a copper bar, passes through a Hall element 3, reaches a relay 2, and is connected with an external high-voltage connector through the copper bar to form an integral closed loop; the high pressure is gathered the pencil and is fixed through card wire casing 6 on the base, joins the high pressure and gathers the connector, and the low pressure control pencil is fixed through card wire casing 6 on the base, joins the low pressure control connector in, guarantees that high pressure is gathered and low pressure control gathers respectively, simplifies with the external line structure.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims

1. A closed battery distribution unit that collects high pressure collection and low pressure control in an organic whole which characterized in that: the Battery Distribution Unit (BDU) comprises a BDU base, a BDU upper cover and electric components placed in the BDU base; a plurality of wire clamping grooves (6) and hollow holes (7) are formed in the BDU base; a battery connecting end (8), a high-voltage acquisition connector (9), a low-voltage control connector (10) and a high-voltage connector end (11) are arranged on the outer side of the BDU upper cover; the electric component and the copper bar are locked on the BDU base.

2. The closed battery distribution unit of claim 1, wherein the closed battery distribution unit integrates high voltage collection and low voltage control, and further comprises: the electric components comprise a pre-charging relay (1), a relay (2), a Hall element (3), a flame switch (4) and a fuse (5); the battery connecting end (8) is connected with the fuse (5), is connected with the flame switch (4) through the copper bar, passes the Hall element (3) again to reach the relay (2), and is connected with an external high-voltage connector through the copper bar to form an integral closed loop.

3. The closed battery distribution unit of claim 1, wherein the closed battery distribution unit integrates high voltage collection and low voltage control, and further comprises: the high-voltage acquisition wire harness is fixed through a wire clamping groove on the BDU base and converged into a high-voltage acquisition connector (9); the low-voltage control wire harness is fixed through a wire clamping groove in the BDU base and converged into the low-voltage control connector (10).

4. The closed battery distribution unit of claim 1, wherein the closed battery distribution unit integrates high voltage collection and low voltage control, and further comprises: the pre-charging resistor (12) is arranged at the inner side of the BDU upper cover.