CN207902186U - A kind of high voltage distribution box for electric vehicle - Google Patents

Abstract

The utility model discloses a kind of high voltage distribution boxes for electric vehicle, including distribution box main body, with cover on the upper cover outside distribution box main body, distribution box main body is divided into upper layer and lower layer, lower layer is the first supporting plate, support binding post is provided on first supporting plate, by supporting binding post to be fixedly connected with second supporting plate on upper layer, fixed component has positive relay, cathode relay, current sensor, high-voltage acquisition terminal and control input terminal on the first supporting plate；Fixed component has heating fuse and heating relay on second supporting plate.

Description

A high-voltage distribution box for electric vehicles

technical field

The utility model relates to the technical field of electric vehicles, in particular to a high-voltage distribution box for electric vehicles.

Background technique

The power system of an electric vehicle includes batteries, battery boxes, high-voltage distribution boxes, cooling systems, wiring harnesses, and battery systems have certain restrictions due to the height of the chassis. In a limited volume, to meet the requirements of vibration, electrical insulation, heat dissipation, collision and other regulations, how to design has become a problem to be solved by technicians.

Contents of the invention

The purpose of the utility model is to provide a space-saving high-voltage distribution box for electric vehicles with high utilization rate. The purpose of this utility model is achieved through the following technical solutions.

A high-voltage power distribution box for electric vehicles, comprising a main body of the power distribution box and an upper cover covering the main body of the power distribution box. A supporting terminal is arranged on a supporting terminal, and the second supporting plate on the upper layer is fixedly connected to the supporting terminal. The components fixed on the first supporting plate include positive relays, negative relays, current sensors, high-voltage acquisition terminals, and Control input terminals; the components fixed on the second pallet include heating fuses and heating relays.

Further, the first pallet and the second pallet are pre-embedded with wiring sockets for installing components, and the wiring sockets are provided with internal threads and are integrally injected with the pallets.

Further, the height of the terminal block on the first pallet is lower than the height of the supporting terminal.

Further, each component attachment on the first pallet has wire harness channel buckles.

Further, the first pallet and the second pallet have component placement slots for fixing components, and are integrally injection molded with the pallet.

Further, the bottom of the upper cover is provided with cooling holes.

Further, each input and output port of the upper cover has an identification symbol, and the upper cover is marked with PTC, positive input, control input, negative input, negative output, high voltage acquisition, and positive input.

The beneficial effects of the utility model:

The high-voltage power distribution box of the utility model adopts a double-layer design, reduces the occupied area of the high-voltage power distribution box, improves space utilization, and is very suitable for electric vehicles.

Below in conjunction with accompanying drawing and embodiment the utility model is described in detail.

Description of drawings

Figure 1 is a schematic diagram of the external structure of the utility model power distribution box (front);

Figure 2 is a schematic diagram of the external structure of the utility model power distribution box (back side);

Fig. 3 is a schematic diagram of the main structure of the high-voltage power distribution box of the present invention;

Fig. 4 is a structural schematic diagram of the first pallet and components;

Fig. 5 is a schematic diagram of the structure of the first pallet;

Fig. 6 is a schematic structural diagram of the second pallet and components;

Fig. 7 is a schematic diagram of the structure of copper bars connecting components in the first pallet;

Fig. 8 is a schematic diagram of the connection structure of the main components of the present invention.

Reference signs:

1. Upper cover; 2. First supporting plate; 3. Second supporting plate; 51. Negative pole relay, 52. High voltage acquisition terminal, 53. Positive pole relay, 54. Heating relay, 55. Heating fuse, 56. Control input Terminal, 57. Current sensor; 41, 42, 43, 44, 45, 46, 47. Copper bar; 201, 202, 203, 204, 205, 209, 210, 211, 214, 31, 32. Terminal block; 212 , 213, 206, 207. Support terminal; 208. Buckle; 11. Cooling hole.

Detailed ways

As shown in Figures 1 to 8, a high-voltage power distribution box for electric vehicles includes a main body of the power distribution box and an upper cover 1 covering the main body of the power distribution box. The main body of the power distribution box is divided into upper and lower layers , the lower layer is the first pallet 2, the first pallet 2 is provided with supporting terminals 212, 213, 206, 207, and the second pallet 3 on the upper layer is fixedly connected to the supporting terminals 212, 213, 206, 207, The components fixed on the first pallet 2 include a positive relay 53, a negative relay 51, a current sensor 57, a high voltage acquisition terminal 52, and a control input terminal 56; the components fixed on the second pallet 3 have heating fuse 55 and heating relay 54 .

The first pallet 2 and the second pallet 3 are pre-embedded with wiring sockets 201, 202, 203, 204, 205, 209, 210, 211, 214, 31, 32 for installing components, and the wiring sockets are provided with Internal thread and integrated injection molding with the pallet. The height of the wire socket on the first supporting board 2 is lower than the height of the supporting terminal. Each component attachment on the first pallet 2 has wire harness channel buckles 208 . The first supporting plate and the second supporting plate have component placing grooves for fixing components, and are integrally injection molded with the supporting plate.

The bottom of the upper cover 1 is provided with cooling holes 11 . Each input and output port on the upper cover has an identification symbol. In order to facilitate wiring and identify the terminal during maintenance, the upper cover is marked with PTC, positive input, control input, negative input, negative output, high voltage acquisition, and positive input.

The installation sequence of the high-voltage power distribution box: the main pole relay 53 and the negative pole relay 51 are installed at the positions where there are prompts, one end of the copper bar 41 is fixed on the negative pole of the negative pole relay 51, the other end is fixed on the terminal block 201, and one end of the copper bar 42 is fixed on the negative pole The negative end of the relay 51 is fixed on the terminal block 205 at the other end. The copper bars 45 are respectively fixed on the terminal blocks 210, 211, and then the current sensors 57 are respectively fixed on the terminal blocks 205, 210. One end of the copper bar 43 is fixed on the terminal block 204 , and the other end is fixed on the positive terminal of the positive relay 53 . One end of the copper bar 44 is fixed on the terminal block 209 , and the other end is fixed on the negative terminal of the positive relay 53 . The second pallet 3 is fixed on the terminal block 212, 213, 206, 207, the heating relay 54 is installed on the position where the second pallet 3 has a prompt, and the copper row 46 is fixed on the terminal block 31 on the second pallet, and the copper row One end of 47 is fixed on the terminal block 32, the other end is fixed on the positive end of the heating relay 54, the heating fuse 55 is fixed on the copper bars 46 and 47, and finally the high-voltage acquisition terminal 52 is fixed, and the high-voltage acquisition terminal 52 is fixed by screws On the terminal block 202 and the terminal block 203, the control input terminal 56 is fixed by the buckle on the terminal block 214, and the low-voltage wire harness and the high-voltage wire harness are connected, and the upper cover 1 is finally covered, and the screw and the first bracket Plate 2 is fixed.

Claims (7)

1. A high-voltage power distribution box for electric vehicles, comprising a main body of the power distribution box and an upper cover covered outside the main body of the power distribution box, characterized in that: the main body of the power distribution box is divided into upper and lower layers, and the lower layer is The first pallet, the first pallet is provided with a supporting terminal, and is fixedly connected with the second pallet on the upper layer through the supporting terminal, and the components fixed on the first pallet include a positive relay, a negative relay, and a current sensor , a high-voltage acquisition terminal, and a control input terminal; the components fixed on the second pallet include a heating fuse and a heating relay. 2. The high-voltage power distribution box for electric vehicles according to claim 1, characterized in that: the first pallet and the second pallet are pre-embedded with a terminal block for installing components, and the terminal block It is provided with internal thread and is integrally injected with the pallet. 3. The high-voltage power distribution box for electric vehicles according to claim 2, wherein the height of the terminal block on the first pallet is lower than the height of the supporting terminal. 4. The high-voltage power distribution box for electric vehicles according to claim 1, characterized in that: each component attachment on the first pallet has a wire harness passage buckle. 5. The high-voltage power distribution box for electric vehicles according to claim 1, characterized in that: there are component placement slots for fixing components on the first pallet and the second pallet, and they are integrally injection molded with the pallet . 6. The high-voltage power distribution box for electric vehicles according to claim 1, characterized in that: the bottom of the upper cover is provided with cooling holes. 7. The high-voltage power distribution box for electric vehicles according to claim 1, characterized in that: each input and output port of the upper cover has identification symbols, and the upper cover is marked with PTC, positive input, control input, negative input, negative Output, high voltage acquisition, positive input.