CN209964421U - PCB protection architecture in electric motor car - Google Patents

Abstract

The utility model discloses a PCB board protection architecture in electric motor car, including upper junction plate and heat-absorbing pipe, the both sides of upper junction plate are provided with the upper junction plate, the both sides of box body are provided with lower connecting plate, every the lower connecting plate all is corresponding with the upper junction plate, every be connected through fixing bolt between lower connecting plate and the upper junction plate, fixing bolt's lower extreme threaded connection has the nut, the upper end of nut offsets with the bottom face of lower connecting plate, transversely be provided with two heat-absorbing pipes in the upper junction plate, every the right-hand member of heat-absorbing pipe runs through upper junction plate right side wall and is provided with the wind-collecting opening. The utility model discloses, the wind collection mouth can be collected external air, and the air of collection can flow along the left end of heat-absorbing pipe from the inner wall of heat-absorbing pipe bending from the right-hand member entering of heat-absorbing pipe, and then with taking away of the heat in the heat-absorbing pipe, takes away the heat that the component produced on the PCB board, is favorable to the quick heat dissipation of PCB board, has avoided the PCB board because overheated damage.

Description

PCB protection architecture in electric motor car

Technical Field

The utility model relates to an electric motor car technical field especially relates to a PCB board protection architecture in electric motor car.

Background

Electric vehicles, namely electric drive vehicles, are also known as electric drive vehicles. Electric vehicles are classified into alternating current electric vehicles and direct current electric vehicles. Generally, an electric vehicle is a vehicle that uses a battery as an energy source, and converts electric energy into mechanical energy through a controller, a motor and other components to move so as to control the current and change the speed.

Traditional electric motor car battery all has installation battery management system, battery management system is for installing various electronic components on the PCB board, in order to guarantee the heat dissipation of PCB board, generally all directly expose the installation battery case outside, the outside lacks protection architecture, and the electric motor car environment of traveling is more abominable, like this will lead to in rainwater weather, external rainwater can flow on the PCB board, lead to the damage of PCB board, the solution of prior art is to put into the PCB board and protects in the protective housing.

However, this kind of PCB board protects it through the protective housing, has also influenced the heat dissipation of electronic component on the PCB board when protecting, and the last electronic component heat dissipation of PCB board also can reduce life.

Therefore, in order to solve the above problems, we propose a protection structure for a PCB board in an electric vehicle.

SUMMERY OF THE UTILITY MODEL

The purpose of the utility model is to solve the shortcoming that exists among the prior art, if: this kind of PCB board protects it through the protective housing, has also influenced the heat dissipation of electronic component on the PCB board in the protection, and the electronic component heat dissipation on the PCB board also can reduce life well.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a PCB protection structure in an electric vehicle comprises a cover body and a box body, wherein upper connecting plates are arranged on two sides of the cover body, the two sides of the box body are provided with lower connecting plates, each lower connecting plate corresponds to the upper connecting plate, each lower connecting plate is connected with the upper connecting plate through a fixing bolt, the lower end of the fixed bolt is in threaded connection with a nut, the upper end of the nut is abutted against the bottom end face of the lower connecting plate, two heat absorption pipes are transversely arranged in the cover body, the right end of each heat absorption pipe penetrates through the right side wall of the cover body and is provided with an air collecting opening, the left end of the heat absorption tube penetrates through the left side wall of the cover body and is communicated with the outside, a PCB is arranged in the box body, the both ends of PCB board all are connected on the lateral wall of box body through buffer gear, be provided with the connection terminal on the bottom face of box body, the up end and the PCB board of connection terminal are connected.

Preferably, each buffer mechanism comprises an elastic plate and a fixed plate, and the elastic plate and the fixed plate are correspondingly and fixedly mounted on the inner side wall of the box body.

Preferably, the elastic plate is located above the fixed plate, two ends of the PCB are respectively arranged between the elastic plate and the fixed plate, and the same fixed rod is inserted into the elastic plate, the fixed plate and the PCB.

Preferably, the lower extreme of dead lever is provided with screw thread and threaded connection in the fixed plate, the lower extreme of PCB board is provided with the cushion collar, the lower extreme of cushion collar passes through buffer spring fixed connection at the up end of fixed plate.

Preferably, the air collecting opening is arranged in the advancing direction of the electric vehicle, and the diameter of the opening on the right side of the air collecting opening is larger than that of the opening on the left side of the air collecting opening.

Preferably, the two heat absorption pipes are both arranged in a concave-convex bending mode, and a heat dissipation coating is arranged in each heat absorption pipe.

Compared with the prior art, the beneficial effects of the utility model are that:

1. when the electric vehicle runs forwards, the PCB can continuously work, and then an element at the upper end of the PCB can generate a lot of heat, the heat can be transferred to the heat absorbing pipe through the air between the cover body and the box body, the heat absorbing pipe can absorb the surrounding heat, and then the heat is radiated into the air flowing in the heat absorbing pipe through the heat radiation coating on the inner wall of the heat absorbing pipe, wherein the air collecting port can collect the outside air, the collected air can enter from the right end of the heat absorbing pipe and flow out from the left end of the heat absorbing pipe along the inner wall bent along the heat absorbing pipe, so that the heat in the heat absorbing pipe is taken away, and then the heat generated by the element on the PCB is taken away, thereby being beneficial to the quick heat radiation of the PCB and avoiding the damage of the PCB due to overheating;

2. shake about the process of advancing can take place when the electric motor car, and then can take place slight extrusion to the elastic plate of PCB board upper end and the cushion collar of PCB board lower extreme, the elastic plate has fine cushioning effect to the upper portion of PCB board to buffer spring also has fine cushioning effect to the lower terminal surface of PCB board through the cushion collar, and then has avoided the PCB board to collide with other component when shaking from top to bottom and has damaged, has prolonged the life of PCB board.

Drawings

Fig. 1 is a schematic front structural view of a PCB protection structure in an electric vehicle according to the present invention;

fig. 2 is a partially enlarged structural diagram of a in fig. 1.

In the figure: 1 nut, 2 lower connecting plates, 3 upper connecting plates, 4 fixing bolts, 5 covers, 6 heat absorption tubes, 7 air collecting ports, 8 boxes, 9 PCBs, 10 wiring seats, 11 elastic plates, 12 buffer sleeves, 13 fixing plates, 14 fixing rods and 15 buffer springs.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-2, a PCB protection architecture in electric motor car, including lid 5 and box body 8, the both sides of lid 5 are provided with upper junction plate 3, the both sides of box body 8 are provided with lower connecting plate 2, every lower connecting plate 2 all corresponds with upper junction plate 3, be connected through fixing bolt 4 between every lower connecting plate 2 and the upper junction plate 3, fixing bolt 4's lower extreme threaded connection has nut 1, the upper end of nut 1 offsets with the bottom face of lower connecting plate 2, the mutually supporting of bolt 4 and nut 1 is favorable to the dismantlement and the installation of upper junction plate 3 and lower connecting plate 2.

Two heat absorbing pipes 6 are transversely arranged in the cover body 5, the heat absorbing pipes 6 are convenient for absorbing heat between the cover body 5 and the box body 8, the right end of each heat absorbing pipe 6 penetrates through the right side wall of the cover body 5 and is provided with an air collecting opening 7, the air collecting openings 7 are arranged in the advancing direction of the electric vehicle, when the electric vehicle advances, the surrounding cold air is conveniently collected by the collecting openings 7, the opening diameter on the right side of the air collecting opening 7 is larger than that on the left side, when the cold air flows into the heat absorbing pipes 6 from the right end to the left end of the air collecting opening, the flow speed is faster, the flow speed of the air in the heat absorbing pipes 6 is further accelerated, the cooling speed of the heat absorbing pipes 6 is accelerated, the left end of each heat absorbing pipe 6 penetrates through the left side wall of the cover body 5 and is communicated with the outside, the two heat absorbing pipes 6 are both in concave-convex bending arrangement, a heat radiating coating is arranged in each heat absorbing pipe 6, a PCB 9, the bottom end face of the box body 8 is provided with a wire holder 10, and the upper end face of the wire holder 10 is connected with the PCB 9.

Every buffer gear all includes elastic plate 11 and fixed plate 13, the fixed mounting that elastic plate 11 and fixed plate 13 homogeneous phase correspond is on the inside wall of box body 8, elastic plate 11 is located fixed plate 13's top, the both ends of PCB board 9 set up respectively between elastic plate 11 and fixed plate 13, elastic plate 11, equal alternate same dead lever 14 on fixed plate 13 and the PCB board 9, the lower extreme of dead lever 14 is provided with screw thread and threaded connection in fixed plate 13, the lower extreme of PCB board 9 is provided with buffer sleeve 12, buffer sleeve 12's lower extreme passes through buffer spring 15 fixed connection at fixed plate 13's up end.

In the utility model, when the electric vehicle is running forward, the PCB 9 can work continuously, and then the upper end element of the PCB 9 can generate a lot of heat, the heat can be transmitted to the heat absorbing pipe 6 through the air between the cover body 5 and the box body 8, the heat absorbing pipe 6 can absorb the surrounding heat, and then the heat can be emitted to the air flowing in the heat absorbing pipe 6 through the heat dissipation coating of the inner wall of the heat absorbing pipe 6, wherein, the air collecting port 7 can collect the outside air, the collected air can enter from the right end of the heat absorbing pipe 6 and flow out from the left end of the heat absorbing pipe 6 along the inner wall bent by the heat absorbing pipe 6, and then the heat in the heat absorbing pipe 6 can be taken away, and then the heat generated by the upper element of the PCB 9 can be taken away, which is beneficial to the quick heat dissipation of the PCB 9, the damage of the PCB 9 due to overheating can be avoided, and the electric vehicle can vibrate up and down when moving forward, and then the elastic plate 11 at the upper end of the PCB 9 and the buffer, the elastic plate 11 has a good buffering effect on the upper portion of the PCB 9, and the buffer spring 15 also has a good buffering effect on the lower end face of the PCB 9 through the buffer sleeve 12, so that the PCB 9 is prevented from being damaged due to collision with other elements when vibrating up and down, and the service life of the PCB 9 is prolonged.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (6)

1. A PCB protection structure in an electric vehicle comprises a cover body (5) and a box body (8), and is characterized in that upper connecting plates (3) are arranged on two sides of the cover body (5), lower connecting plates (2) are arranged on two sides of the box body (8), each lower connecting plate (2) corresponds to one upper connecting plate (3), each lower connecting plate (2) is connected with one upper connecting plate (3) through a fixing bolt (4), a nut (1) is in threaded connection with the lower end of each fixing bolt (4), the upper end of each nut (1) abuts against the bottom end face of each lower connecting plate (2), two heat absorption pipes (6) are transversely arranged in the cover body (5), the right end of each heat absorption pipe (6) penetrates through the right side wall of the cover body (5) and is provided with a wind collecting opening (7), the left ends of the heat absorption pipes (6) penetrate through the left side wall of the cover body (5) and are communicated with the outside, be provided with PCB board (9) in box body (8), the both ends of PCB board (9) all are connected on the lateral wall of box body (8) through buffer gear, be provided with connection terminal (10) on the bottom face of box body (8), the up end of connection terminal (10) is connected with PCB board (9).

2. The PCB protection structure in the electric vehicle according to claim 1, wherein each of the buffer mechanisms comprises an elastic plate (11) and a fixed plate (13), and the elastic plate (11) and the fixed plate (13) are correspondingly and fixedly mounted on the inner side wall of the box body (8).

3. The PCB protection structure in the electric vehicle as claimed in claim 2, wherein the elastic plate (11) is located above the fixing plate (13), two ends of the PCB (9) are respectively arranged between the elastic plate (11) and the fixing plate (13), and the same fixing rod (14) is inserted on the elastic plate (11), the fixing plate (13) and the PCB (9).

4. The PCB protecting structure in the electric vehicle as claimed in claim 3, wherein the lower end of the fixing rod (14) is provided with threads and is screwed in the fixing plate (13), the lower end of the PCB (9) is provided with a buffer sleeve (12), and the lower end of the buffer sleeve (12) is fixedly connected to the upper end surface of the fixing plate (13) through a buffer spring (15).

5. The PCB board protection architecture in electric motor car of claim 1, characterized in that, the setting of air-collecting opening (7) is in the electric motor car direction of advance, the opening diameter on the right of air-collecting opening (7) is greater than the opening diameter on the left.

6. The PCB protecting structure in the electric vehicle as claimed in claim 1, wherein the two heat absorbing pipes (6) are both disposed in a concave-convex bending manner, and a heat dissipating coating is disposed inside each heat absorbing pipe (6).

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