High-voltage control box module for battery pack

Abstract

The utility model relates to the technical field of battery packs, in particular to a high-voltage control box module for a battery pack, which is mounted in a battery pack box body and comprises a box body with a semi-closed mounting cavity, and a relay mounting position, a branch relay mounting position, a pre-charging resistor mounting position and a Hall sensor mounting position are arranged in the mounting cavity; the relay mounting position is connected with a relay, the branch relay mounting position is connected with a branch relay, the pre-charging resistor mounting position is connected with a pre-charging resistor, the Hall sensor mounting position is connected with a Hall sensor socket, and a Hall sensor is inserted into the Hall sensor socket. The module is not only simple in structure, but also capable of ensuring that working of each functional unit does not interfere with each other, more convenient in electric connection, and more convenient in assembly or disassembly and maintenance.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, and in particular to a high-voltage control box module for a battery pack. Background Art

[0002] At present, new energy vehicles have attracted wide attention from all walks of life due to their excellent environmental performance. The requirements for new energy vehicles are also constantly increasing. As a new energy vehicle, electric vehicles are also developing in the direction of high safety, high energy ratio and light weight. The main factor that determines the mileage of electric vehicles is the power supply battery. Different specifications of power supply batteries can be selected for different models to meet driving requirements.

[0003] The power supply battery for electric vehicles is generally a battery pack composed of multiple battery modules, that is, multiple battery modules are stacked up and down in the same box, and then the battery modules are connected. The core battery module is generally configured with a corresponding number of cells according to the size of the output voltage, and then all the cells are connected and the voltage is output through the high-voltage control box. The high-voltage control box is used to manage the high-voltage power distribution of the whole vehicle, realize the control of each output separately, manage the high-voltage safety, and has over-current, over-voltage, and over-temperature protection functions. At the same time, it has CAN communication function and real-time data exchange. The high-voltage control box is mainly composed of a pre-charge circuit composed of a pre-charge relay, a relay, a pre-charge resistor, and a Hall sensor to prevent damage to the vehicle motor. The function of the pre-charge relay is to control the disconnection and closing of the pre-charge circuit; the function of the relay is to control the operation of the large current with a small current, thereby realizing the automatic adjustment, safety protection and conversion of the circuit; the function of the pre-charge resistor is to limit the current; the Hall sensor is used to monitor the current of the battery pack.

[0004] In traditional technology, the high-voltage control box is mostly external, that is, it is set on the outer wall of the battery pack body. It is not only complex in structure and large in size, occupying the external space of the battery pack, but also has messy internal wiring, and the functional components are prone to mutual interference when working. In addition, due to the complex structure of the traditional high-voltage control box, it is very difficult to assemble or disassemble it for maintenance.

[0005] Therefore, a new technical solution is urgently needed to solve the above technical problems. Utility Model Content

[0006] The purpose of the utility model is to overcome the above-mentioned problems of the prior art and to provide a high-voltage control box module for a battery pack, which is used to solve the technical problems that the traditional external high-voltage control box has a complex structure, confusing wiring, troublesome assembly and disassembly, occupies the external space of the battery pack, and the functional components are prone to mutual interference when working, thereby posing a safety hazard.

[0007] The above objectives are achieved through the following technical solutions:

[0008] A high-voltage control box module for a battery pack is installed in a battery pack case, comprising a box body with a semi-enclosed installation cavity, wherein a relay installation position, a branch relay installation position, a pre-charging resistor installation position and a Hall sensor installation position are provided in the installation cavity; a relay is connected to the relay installation position, a branch relay is connected to the branch relay installation position, a pre-charging resistor is connected to the pre-charging resistor, and a Hall sensor installation position is connected to a Hall sensor socket, and the Hall sensor socket is used for plugging a Hall sensor; the relay, the branch relay and the pre-charging resistor are electrically connected to each other; a first battery cell conductive sheet metal connecting portion and a second battery cell conductive sheet metal connecting portion are provided on the box body, for electrically connecting the relay to the first battery cell conductive sheet metal and the second battery cell conductive sheet metal through the relay conductive sheet metal; the relay is connected to an external plug through a plug conductive sheet metal, and the external plug can pass through the side of the battery pack case and be connected and fixed to the outer wall.

[0009] Furthermore, the relay includes a first relay, a second relay and a third relay, and the relay conductive sheet metal includes a first relay conductive sheet metal for connecting the first battery cell conductive sheet metal and the first connection end of the first relay, and a second relay conductive sheet metal for connecting the second battery cell conductive sheet metal, the first connection end of the second relay and the first connection end of the third relay.

[0010] Furthermore, there are two external plugs, including a first external plug and a second external plug; the plug conductive sheet metal includes a first plug conductive sheet metal for connecting the second connection end of the first relay, the first connection end of the first external plug and the first connection end of the second external plug, a second plug conductive sheet metal for connecting the second connection end of the second relay and the second connection end of the first external plug, and a third plug conductive sheet metal for connecting the second connection end of the third relay and the second connection end of the second external plug.

[0011] Furthermore, the first connection end of the pre-charging resistor is connected to the second connection end of the third relay through a first cable, the second connection end of the pre-charging resistor is connected to the first connection end of the branch relay through a second cable, and the second connection end of the branch relay is connected to the first connection end of the second relay through a third cable.

[0012] Furthermore, a first through groove is provided on the box body at a position adjacent to the branch relay installation position, and a second through groove is provided on the box body at a position adjacent to the relay installation position, the first through groove is used for the passage of the first cable and the third cable, and the second through groove is used for the passage of the first cable.

[0013] Furthermore, the third plug conductive sheet metal can extend out of the second through slot for electrical connection with the first cable.

[0014] Furthermore, a right-angle groove is formed on one side of the box body adjacent to the Hall sensor socket, and the third cable is connected to the first connection end of the second relay via the right-angle groove.

[0015] Furthermore, the second battery core conductive sheet metal connection portion is arranged in the installation cavity corresponding to the bottom edge of the right-angle groove.

[0016] Furthermore, a third through slot which can penetrate the box body is provided at the Hall sensor installation position, and a conductive sheet metal connecting portion of the first battery cell is provided on the back side of the box body corresponding to the third through slot.

[0017] Furthermore, a connecting seat is provided on the bottom edge of the box body.

[0018] Beneficial Effects

[0019] The utility model provides a high-voltage control box module for a battery pack, which independently fixes the high-voltage control box body of the battery pack in the battery pack box, realizes electrical connection with each functional component through the first cell conductive sheet metal connection part and the second cell conductive sheet metal connection part, and provides external plugging through an external plug to obtain cell parameters. This module is not only simple in structure, but also can ensure that the work of each functional unit does not interfere with each other, and the electrical connection is more convenient, and it is more convenient to assemble or disassemble for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a high-voltage control box module for a battery pack according to the utility model from a first perspective;

[0021] Figure 2 This is a second perspective structural schematic diagram of a high-voltage control box module for a battery pack according to the utility model;

[0022] Figure 3 This is an exploded view of a high-voltage control box module for a battery pack according to the utility model;

[0023] Figure 4 This is a schematic diagram of the connection of the functional components of a high-voltage control box module for a battery pack according to the utility model;

[0024] Figure 5 This is a schematic diagram of the application of connecting a high-voltage control box module for a battery pack described in the utility model to a battery cell.

[0025] Graphic marking:

[0026] 1-box body, 101-relay installation position, 102-branch relay installation position, 103-pre-charging resistor installation position, 104-Hall sensor installation position;

[0027] 2-external plug, 201-first external plug, 202-second external plug;

[0028] 3-relay, 301-first relay, 302-second relay, 303-third relay;

[0029] 4-Branch relay;

[0030] 5- Pre-charge resistance;

[0031] 6-Hall sensor socket;

[0032] 7-first battery cell conductive sheet metal connection portion, 701-first battery cell conductive sheet metal;

[0033] 8-second battery cell conductive sheet metal connection portion, 801-second battery cell conductive sheet metal;

[0034] 9-first relay conductive sheet metal, 10-second relay conductive sheet metal, 11-installation cavity, 12-first plug conductive sheet metal, 13-second plug conductive sheet metal, 14-third plug conductive sheet metal, 15-first cable, 16-second cable, 17-third cable, 18-first through slot, 19-second through slot, 20-third through slot, 21-right angle slot, 22-connecting seat, 23-battery core. DETAILED DESCRIPTION

[0035] The utility model is further described in detail below based on the accompanying drawings and embodiments. The described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] like Figure 1 to Figure 3As shown, the present solution provides a high-voltage control box module for a battery pack, which is installed in a battery pack box, including a box body 1 with an installation cavity 11, wherein a relay installation position 101, a branch relay installation position 102, a pre-charging resistor installation position 103 and a Hall sensor installation position 104 are provided in the installation cavity 11; a relay 3 is connected to the relay installation position 101, a branch relay 4 is connected to the branch relay installation position 102, a pre-charging resistor 5 is connected to the pre-charging resistor installation position 103, and a Hall sensor socket 6 is connected to the Hall sensor installation position 104, and the Hall sensor socket 6 is used to plug in a Hall sensor; the relay 3, the branch relay 4 and the pre-charging resistor 5 are electrically connected to each other;

[0037] The box body 1 is provided with a first cell conductive sheet metal connection portion 7 and a second cell conductive sheet metal connection portion 8, which are used for the relay 3 to be electrically connected to the first cell conductive sheet metal 701 and the second cell conductive sheet metal 801 through the relay conductive sheet metal;

[0038] The relay 3 is connected to the external plug 2 through a plug conductive sheet metal, and the external plug 2 can penetrate the side of the battery pack box and be connected and fixed to the outer wall.

[0039] Among them, Figure 3 and Figure 4 As shown, the relay 3 includes a first relay 301, a second relay 302 and a third relay 303, and the relay conductive sheet metal includes a first relay conductive sheet metal 9 for connecting the first battery cell conductive sheet metal 701 and the first connection end of the first relay 301, and a second relay conductive sheet metal 10 for connecting the second battery cell conductive sheet metal 801, the first connection end of the second relay 302 and the first connection end of the third relay 303.

[0040] In this embodiment, there are two external plugs 2, including a first external plug 201 and a second external plug 202; the plug conductive sheet metal includes a first plug conductive sheet metal 12 for connecting the second connection end of the first relay 301, the first connection end of the first external plug 201 and the first connection end of the second external plug 202, a second plug conductive sheet metal 13 for connecting the second connection end of the second relay 302 and the second connection end of the first external plug 201, and a third plug conductive sheet metal 14 for connecting the second connection end of the third relay 303 and the second connection end of the second external plug 202.

[0041] like Figure 1 and Figure 2As shown, in this embodiment, the first connection end of the pre-charging resistor 5 is connected to the second connection end of the third relay 303 through the first cable 15, the second connection end of the pre-charging resistor 5 is connected to the first connection end of the branch relay 4 through the second cable 16, and the second connection end of the branch relay 4 is connected to the first connection end of the second relay 302 through the third cable 17.

[0042] In addition, if Figure 2 and Figure 3 As shown, in this embodiment, a first through groove 18 is opened on the box body 1 at a position adjacent to the branch relay installation position 102, and a second through groove 19 is opened on the box body 1 at a position adjacent to the relay installation position 101. The first through groove 18 is used for the penetration of the first cable 15 and the third cable 17, and the second through groove 19 is used for the penetration of the first cable 15 so as to be connected to the second connection end of the third relay 303.

[0043] Specifically, the third plug conductive sheet metal 14 can extend out of the second through slot 19 to be electrically connected to the first cable 15. Connecting the cables on the back of the box body 1 is not only easier to operate, but also avoids the problem of line confusion when wiring from the installation cavity 11 of the box body 1.

[0044] like Figure 1 and Figure 3 As shown, a right angle groove 21 is provided on one side of the box body 1 adjacent to the Hall sensor socket 6, and the third cable 17 is connected to the first connection end of the second relay 302 via the right angle groove 21. The wiring of the cables at the side of the box body 1 is not only easier to operate, but also avoids the problem of line confusion when wiring from the installation cavity 11 of the box body 1.

[0045] The second cell conductive sheet metal connection portion 8 is disposed in the mounting cavity 11 corresponding to the bottom edge of the right-angle slot 21. In this structure, the second cell conductive sheet metal connection portion 8 is directly exposed to the outside of the box body 1, thereby making it easier to screw the second cell conductive sheet metal 801 to the second relay conductive sheet metal 10.

[0046] like Figure 1 and Figure 2 As shown, in this embodiment, a third through slot 20 that can penetrate the box body 1 is provided at the Hall sensor installation position 104, and the first battery core conductive sheet metal connecting portion 7 is provided on the back of the box body 1 corresponding to the third through slot 20. One end of the first relay conductive sheet metal 9 can extend out of the third through slot 20 and be connected to the first battery core conductive sheet metal 701 by screws.

[0047] In addition, a connecting seat 22 is provided on the bottom edge of the box body 1 for connecting and fixing with the inner wall of the battery pack box body by screws.

[0048] The above description is only for illustrating the implementation mode of the present invention and is not intended to limit the present invention. For those skilled in the art, any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A high voltage control box module for a battery pack, installed in a battery pack box, characterized in that: The invention comprises a box body (1) with an installation cavity (11), wherein a relay installation position (101), a branch relay installation position (102), a pre-charging resistor installation position (103) and a Hall sensor installation position (104) are arranged in the installation cavity (11); the relay installation position (101) is connected to a relay (3), the branch relay installation position (102) is connected to a branch relay (4), the pre-charging resistor installation position (103) is connected to a pre-charging resistor (5), the Hall sensor installation position (104) is connected to a Hall sensor socket (6), and the Hall sensor socket (6) is used for plugging a Hall sensor; the relay (3), the branch relay (4) and the pre-charging resistor (5) are electrically connected to each other; The box body (1) is provided with a first battery cell conductive sheet metal connection portion (7) and a second battery cell conductive sheet metal connection portion (8), which are used for electrically connecting the relay (3) with the first battery cell conductive sheet metal (701) and the second battery cell conductive sheet metal (801) via the relay conductive sheet metal; The relay (3) is connected to the external plug (2) via a plug conductive sheet metal, and the external plug (2) can penetrate the side of the battery pack box and be connected and fixed to the outer wall.

2. A high voltage control box module for a battery pack according to claim 1, characterized in that: The relay (3) comprises a first relay (301), a second relay (302) and a third relay (303), and the relay conductive sheet metal comprises a first relay conductive sheet metal (9) for connecting the first battery core conductive sheet metal (701) and a first connection end of the first relay (301), and a second relay conductive sheet metal (10) for connecting the second battery core conductive sheet metal (801), the first connection end of the second relay (302) and the first connection end of the third relay (303).

3. A high voltage control box module for a battery pack according to claim 2, characterized in that: The external plugs (2) have two members, comprising a first external plug (201) and a second external plug (202); the plug conductive sheet metal comprises a first plug conductive sheet metal (12) for connecting the second connection end of the first relay (301), the first connection end of the first external plug (201) and the first connection end of the second external plug (202), a second plug conductive sheet metal (13) for connecting the second connection end of the second relay (302) and the second connection end of the first external plug (201), and a third plug conductive sheet metal (14) for connecting the second connection end of the third relay (303) and the second connection end of the second external plug (202).

4. A high voltage control box module for a battery pack according to claim 3, characterized in that: The first connection end of the pre-charging resistor (5) is connected to the second connection end of the third relay (303) via a first cable (15), the second connection end of the pre-charging resistor (5) is connected to the first connection end of the branch relay (4) via a second cable (16), and the second connection end of the branch relay (4) is connected to the first connection end of the second relay (302) via a third cable (17).

5. A high voltage control box module for a battery pack according to claim 4, characterized in that: A first through slot (18) is provided on the box body (1) at a position adjacent to the branch relay installation position (102), and a second through slot (19) is provided on the box body (1) at a position adjacent to the relay installation position (101), the first through slot (18) being used for passing the first cable (15) and the third cable (17), and the second through slot (19) being used for passing the first cable (15).

6. A high voltage control box module for a battery pack according to claim 5, characterized in that: The third plug conductive sheet metal (14) can extend out of the second through slot (19) and is used to be electrically connected to the first cable (15).

7. A high voltage control box module for a battery pack according to claim 4, characterized in that: A right-angle groove (21) is provided on one side of the box body (1) adjacent to the Hall sensor socket (6), and the third cable (17) is connected to the first connection end of the second relay (302) via the right-angle groove (21).

8. A high voltage control box module for a battery pack according to claim 7, characterized in that: The second battery core conductive sheet metal connection portion (8) is arranged in the installation cavity (11) corresponding to the bottom edge of the right-angle groove (21).

9. A high voltage control box module for a battery pack according to claim 2, characterized in that: A third through slot (20) capable of penetrating the box body (1) is provided at the Hall sensor installation position (104), and the first cell conductive sheet metal connection portion (7) is provided on the back side of the box body (1) corresponding to the third through slot (20).

10. A high voltage control box module for a battery pack according to claim 1, characterized in that: A connecting seat (22) is also provided on the bottom edge of the box body (1).

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