CN204596858U - A kind of battery for electric automobile case - Google Patents

Abstract

The utility model discloses a kind of battery for electric automobile case, comprise casing and be located at the upper cover on the upside of casing, described casing is rectangular structure, described cabinets cavity broad ways is separated out battery case and electrical equipment groove, battery modules is provided with in described battery case, be provided with high tension apparatus module in described electrical equipment groove, described battery case bottom surface, surrounding side and end face are equipped with insulation board, and the cell wall of described electrical equipment groove is provided with and fills plug.Battery for electric automobile case of the present utility model, is made up of casing, battery modules, the large module of high tension apparatus module three, by the modularization of related elements, simplifies battery case structure, facilitate battery case assembling.

Description

A battery box for an electric vehicle

technical field

The utility model relates to a power supply, in particular to a battery box used on an electric vehicle.

Background technique

The existing battery boxes for electric vehicles are assembled from many parts, including not only the box body, several battery packs, but also supporting high-voltage devices, so the structure is complicated and the assembly is not convenient enough.

Utility model content

The technical problem to be solved by the utility model is to provide a battery box for an electric vehicle, which simplifies the structure and facilitates assembly.

In order to solve the above technical problems, the utility model adopts the following technical scheme: a battery box for electric vehicles, including a box body and an upper cover arranged on the upper side of the box body, the box body is a cuboid structure, and the inner cavity of the box body is along the The width direction separates the battery slot and the electrical slot, the battery slot is provided with a battery module, the electrical slot is provided with a high-voltage device module, and the bottom surface, surrounding sides and top surface of the battery slot are provided with insulating plates, A charging plug is provided on the wall of the electric appliance tank;

The battery module group includes two rows of battery modules, the battery modules in each row of battery modules are arranged in a line along the length direction of the box body, the middle of the two rows of battery modules is separated by an insulating plate, and the adjacent two batteries in each row of battery modules The middle of the modules is separated by an insulating plate. The positive poles of all battery modules in one row are facing one end of the length of the battery box, and the positive poles of all battery modules in the other row are facing the other end of the length of the battery box. All batteries in the battery module The modules are connected in series through series copper bars. The two rows of battery modules respectively form a total positive terminal and a total negative terminal at one end of the length of the box. The total positive terminal of the battery module is fixed with a positive terminal power copper bar. The battery module The total negative end of the negative terminal is fixed with a negative terminal power copper bar, the positive terminal power copper bar is connected to the total positive wire harness, and the negative terminal power copper bar is connected to the total negative wire harness;

The high-voltage device module includes an electrical supporting board, and the electrical supporting board is sequentially installed with an ECU module, a shunt and a fuse assembly, and a relay along the length direction. The shunt and fuse assembly includes a bracket, and the bracket A fuse and a shunt are installed on it, the shunt and the fuse are connected through a shunt copper bar, the fuse is connected with a relay copper bar, and the relay copper bar is connected to a contact of the relay through a wire, so The shunt is connected to the ECU module through the shunt wire harness, the total negative output wire harness on the parallel plug is connected to the shunt, and the total negative wire harness is connected to another contact of the relay.

Preferably, the insulating board is an epoxy resin board.

Preferably, an EVA buffer layer is laid under the insulating plate at the bottom of the battery tank.

Preferably, each battery module is connected with a voltage sampling harness and a parallel charging plug harness, the voltage sampling harness is connected to the ECU module, and the parallel charging plug harness is connected to the parallel charging plug.

Preferably, the battery module is pressed and fixed in the battery slot by a sheet metal bead.

Preferably, a temperature probe is also provided in the battery tank, and the temperature probe is placed in the gap between two adjacent battery modules and fixed by EVA and heat-conducting silica gel.

Preferably, a fixing plate is provided at the bottom of the electrical appliance tank, fixing holes are provided at both ends of the electrical appliance supporting plate, and screws pass through the fixing holes to fix the electrical appliance supporting plate on the fixing plate.

Preferably, the ECU module is fixed by a mounting bracket, the mounting bracket is L-shaped, the side plate of the L-shaped mounting bracket is fixed to the side of the ECU module, and the bottom plate of the L-shaped mounting bracket is fixed to the electrical supporting plate.

The battery box for electric vehicles of the utility model is composed of three modules: a box body, a battery module, and a high-voltage device module. Through the modularization of related components, the structure of the battery box is simplified, and the assembly of the battery box is facilitated.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the utility model is further described:

Figure 1 is a schematic diagram of battery module assembly;

Figure 2 is a schematic diagram of the battery module assembled in the battery slot;

Figure 3 is a schematic diagram of a high-voltage device module;

Figure 4 is a schematic diagram of the shunt and fuse assembly;

FIG. 5 is a schematic diagram of the battery module and the high-voltage device module installed in the box.

Detailed ways

As shown in Figures 1 to 5, a battery box for an electric vehicle includes a box body 1 and an upper cover arranged on the upper side of the box body, the box body 1 is a cuboid structure, and the inner cavity of the box body 1 is along the width The direction separates the battery slot 11 and the electrical appliance slot 12. The battery slot 11 is provided with a battery module 2, and the electrical appliance slot 12 is provided with a high-voltage device module 3. The bottom surface, the sides and the top surface of the battery slot are all An insulating plate is provided, and a charging plug 13 is provided on the wall of the electric appliance tank.

The battery module 2 includes two rows of battery modules 21, the battery modules 21 in each row of battery modules are arranged in a line along the length direction of the box body, the middle of the two rows of battery modules is separated by an insulating plate, and the adjacent battery modules in each row The two battery modules 21 are separated by an insulating plate, and the positive poles of all the battery modules 21 in one row are towards one end of the length of the battery box, and the positive poles of all the battery modules 21 in the other row are towards the other end of the length of the battery box. All the battery modules 21 in the module are connected in series through the series copper bars 22. The two rows of battery modules respectively form a total positive terminal and a total negative terminal at one end of the length of the box body. The total positive terminal of the battery module is fixed with a positive terminal power Copper bar 23, the negative terminal power copper bar 24 is fixed on the total negative terminal of the battery module, the positive terminal power copper bar is connected to the general positive wire harness, and the negative terminal power copper bar is connected to the total negative wire harness.

The high-voltage device module 3 includes an electrical appliance pallet 31, and the electrical appliance pallet 31 is sequentially installed with an ECU module 32 (battery electronic control module), a shunt and fuse assembly 33, and a relay 34 along the length direction. The fuse and fuse assembly 33 includes a bracket 333, on which a fuse 332 and a shunt 331 are installed, and the shunt 331 and the fuse 332 are connected through a shunt copper bar 334, and the fuse 332 is connected There is a relay copper bar 335, the relay copper bar 335 is connected to the relay 34 through a contact, the shunt 331 is connected to the ECU module 32 through the shunt wire harness, and the total negative output wire harness 131 on the parallel charging plug 13 is connected to the The shunt 331 is connected, and the total negative wire harness is connected with another contact of the relay 34 .

Wherein, the insulating board is an epoxy resin board. An EVA buffer layer is laid under the insulating plate at the bottom of the battery tank 11 . Each battery module 21 is connected with a voltage sampling harness and a parallel charging plug harness, the voltage sampling harness is connected to the ECU module 32 , and the parallel charging plug harness is connected to the parallel charging plug 13 . The battery module 21 is pressed and fixed in the battery slot 11 by a sheet metal bead. The battery tank 11 is also provided with a temperature probe, which is placed in the gap between two adjacent battery modules 21 and fixed by EVA and heat-conducting silica gel.

The bottom of the appliance tank 12 is provided with a fixing plate 121, and the two ends of the appliance supporting plate 31 are provided with fixing holes 311, and screws pass through the fixing holes to fix the appliance supporting plate on the fixing plate. The ECU module 32 is fixed by a mounting bracket 321, the mounting bracket is L-shaped, the side plate of the L-shaped mounting bracket is fixed to the side of the ECU module, and the bottom plate of the L-shaped mounting bracket is fixed to the electrical supporting plate 31.

During the battery module assembly process, the prepared EVA and epoxy resin boards are laid flat on the bottom of the box, and then the prepared epoxy resin boards are placed on the four walls of the box. Finally, the welded battery modules are placed one by one Put it into the box, and the two rows of battery modules are separated by epoxy resin boards, and each module is separated by epoxy resin boards.

In the assembly process of the high-voltage device module, firstly, fix the ECU module and the mounting bracket, assemble the fuse and the shunt on the bracket, then fix the relay and the ECU module on the electrical supporting board, and then fix the electrical supporting board on the Inside the box, finally put the shunt fuse assembly into the box and connect all the parts that need to be connected.

Claims (8)

1. A battery box for an electric vehicle, comprising a box body and an upper cover arranged on the upper side of the box body, the box body is a cuboid structure, and it is characterized in that: the box inner cavity is separated from the battery tank and the electrical appliance along the width direction The battery tank is equipped with a battery module, and the electrical appliance tank is equipped with a high-voltage device module. The bottom surface of the battery tank, the sides and the top surface of the battery tank are all provided with insulating plates. Equipped with a charging plug; The battery module group includes two rows of battery modules, the battery modules in each row of battery modules are arranged in a line along the length direction of the box body, the middle of the two rows of battery modules is separated by an insulating plate, and the adjacent two batteries in each row of battery modules The middle of the modules is separated by an insulating plate. The positive poles of all battery modules in one row are facing one end of the length of the battery box, and the positive poles of all battery modules in the other row are facing the other end of the length of the battery box. All batteries in the battery module The modules are connected in series through series copper bars. The two rows of battery modules respectively form a total positive terminal and a total negative terminal at one end of the length of the box. The total positive terminal of the battery module is fixed with a positive terminal power copper bar. The battery module The total negative end of the negative terminal is fixed with a negative terminal power copper bar, the positive terminal power copper bar is connected to the total positive wire harness, and the negative terminal power copper bar is connected to the total negative wire harness; The high-voltage device module includes an electrical supporting board, and the electrical supporting board is sequentially installed with an ECU module, a shunt and a fuse assembly, and a relay along the length direction. The shunt and fuse assembly includes a bracket, and the bracket A fuse and a shunt are installed on it, the shunt and the fuse are connected through a shunt copper bar, the fuse is connected with a relay copper bar, and the relay copper bar is connected to a contact of the relay through a wire, so The shunt is connected to the ECU module through the shunt wire harness, the total negative output wire harness on the parallel plug is connected to the shunt, and the total negative wire harness is connected to another contact of the relay. 2. A battery box for an electric vehicle according to claim 1, wherein the insulating board is an epoxy resin board. 3. A battery box for an electric vehicle according to claim 1, characterized in that: an EVA buffer layer is laid under the insulating plate at the bottom of the battery tank. 4. A battery box for electric vehicles according to claim 1, characterized in that: each battery module is connected with a voltage sampling harness and a parallel plug harness, the voltage sampling harness is connected to the ECU module, and the parallel plug harness The charging plug harness is connected with the parallel charging plug. 5. A battery box for an electric vehicle according to claim 1, wherein the battery module is pressed and fixed in the battery slot by a sheet metal bead. 6. A battery box for an electric vehicle according to claim 1, characterized in that: a temperature probe is also provided in the battery tank, and the temperature probe is placed in the gap between two adjacent battery modules, through EVA and Thermally conductive silicone is fixed. 7. A battery box for an electric vehicle according to claim 1, wherein a fixing plate is provided at the bottom of the electrical appliance tank, fixing holes are arranged at both ends of the electrical appliance supporting plate, and screws pass through the fixing holes to secure the electrical appliances. The supporting plate is fixed on the fixed plate. 8. A battery box for an electric vehicle according to claim 1, wherein the ECU module is fixed by a mounting bracket, the mounting bracket is L-shaped, and the side plate of the L-shaped mounting bracket is connected to the ECU module. The side is fixed, and the bottom plate of the L-shaped mounting bracket is fixed with the electrical appliance pallet.