Power conversion and control device

Abstract

The utility model relates to the technical field of power conversion control devices, and particularly discloses a power conversion and control device which comprises a shell, a heat dissipation mechanism is fixedly arranged on the upper end face of the shell, a cooling liquid circulation mechanism is fixedly arranged on one side of the shell, and a circuit board is fixedly arranged in the shell. A vapor chamber is fixedly connected between one side of the circuit board and the cooling liquid circulation mechanism, a liquid cavity is formed in the vapor chamber, the heat dissipation mechanism comprises a plurality of heat dissipation fins fixedly connected with the shell, snakelike heat dissipation pipes are fixedly arranged among the heat dissipation fins in a penetrating mode, the cooling liquid circulation mechanism comprises a shell, and the shell is fixedly connected with the circuit board through the snakelike heat dissipation pipes. And a water tank is fixed in the shell. According to the utility model, the heat dissipation mechanism and the cooling liquid circulation mechanism are arranged, so that the working temperature of the power conversion control device can be effectively reduced, electronic components can be prevented from being damaged by too high temperature, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of power conversion control devices, in particular to a power conversion and control device. Background Art

[0002] The power conversion control device of the motor is mainly used to realize the speed regulation, starting, braking and other control of the motor to meet different working requirements. It controls the running state of the motor by transforming and adjusting the input power supply. It usually uses power electronic devices such as MOS tubes to rectify and invert the power supply, thereby changing the parameters such as voltage, current and frequency of the motor.

[0003] In some high-power power conversion controllers, more MOS tubes are used to increase the tolerable current and power. However, more MOS tubes also generate more heat. The current heat dissipation method is to install the MOS tube on an aluminum heat sink connected to the shell. The heat dissipation effect is not strong enough, and overheating is prone to occur, resulting in damage to the internal power electronic devices. Therefore, those skilled in the art provide a power conversion and control device to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to provide a power conversion and control device to solve the following technical problems:

[0005] How to improve the heat dissipation effect of the power conversion controller, reduce the operating temperature, and prevent damage to power electronic devices caused by overheating.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A power conversion and control device comprises a housing, a heat dissipation mechanism is fixedly arranged on the upper end surface of the housing, and a coolant circulation mechanism is fixedly arranged on one side of the housing;

[0008] A circuit board is fixedly arranged inside the housing, a heat spreader is fixedly connected between one side of the circuit board and the coolant circulation mechanism, and a liquid cavity is opened inside the heat spreader;

[0009] The heat dissipation mechanism comprises a plurality of heat dissipation fins fixedly connected to the housing, and a serpentine heat dissipation pipe is fixedly inserted between the plurality of heat dissipation fins;

[0010] The cooling liquid circulation mechanism comprises a shell, a water tank is fixed inside the shell, and a liquid pump is fixedly connected to the upper side of the water tank inside the shell.

[0011] Furthermore, the output end of the liquid pump is fixedly connected to a water inlet pipe, the upper end of the water inlet pipe extends out of the housing and is fixedly connected to one end of the serpentine heat dissipation pipe, the other end of the serpentine heat dissipation pipe is fixedly connected to a water return pipe, the lower end of the water return pipe extends into the housing and is connected to the water tank;

[0012] Furthermore, the input end of the liquid pump is fixedly connected to a first liquid pipe, the other end of the first liquid pipe is communicated with the liquid cavity, and a second liquid pipe is fixedly connected between the water tank and the liquid cavity;

[0013] Furthermore, a connecting angle steel is fixedly connected to one side of the upper end surface of the shell, and the heat dissipation mechanism also includes a heat dissipation fan, which is arranged at one end of the heat dissipation fin and is arranged perpendicular to the heat dissipation fin;

[0014] Furthermore, one side of the heat dissipation fan is fixedly connected to the connecting angle steel by a first connecting screw;

[0015] Furthermore, a protective cover is fixedly connected to one side of the connecting angle steel close to the shell through a second connecting screw, and the protective cover is arranged on the upper end surface of the shell;

[0016] Furthermore, a wire opening is fixedly provided at one end of the housing;

[0017] Furthermore, the serpentine heat pipe is made of copper, and the heat sink and the housing are made of aluminum;

[0018] Beneficial effects of the utility model:

[0019] The utility model is provided with a heat dissipation mechanism and a coolant circulation mechanism, which have high heat dissipation efficiency, can effectively reduce the internal temperature of the power conversion control device when it is working, can prevent the internal temperature of the device from being too high to damage electronic components, and prolong the service life. When in use, the MOS tube of the power conversion controller is directly installed on the heat spreader, and a liquid cavity is arranged inside the heat spreader. The coolant can be introduced into the liquid cavity through the coolant circulation mechanism, so that the coolant can efficiently exchange heat with the heat spreader, thereby quickly reducing the heat generated by the MOS tube when working. The coolant after heat exchange can dissipate heat through the heat dissipation mechanism, thereby reducing the temperature of the coolant, maintaining the heat exchange effect, and can be used continuously for a long time with strong reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is the overall structure diagram of the utility model;

[0022] Figure 2 This is a disassembled diagram of the heat dissipation fan and the protective cover of the utility model;

[0023] Figure 3 It is a top view of the serpentine heat dissipation pipe of the utility model;

[0024] Figure 4 It is the internal structure diagram of the housing of the utility model;

[0025] Figure 5 It is a cross-sectional view of the heat spreader of the present invention.

[0026] Reference numerals:

[0027] 1. Shell; 2. Heat dissipation mechanism; 21. Heat sink; 22. Serpentine heat pipe; 23. Cooling fan; 3. Coolant circulation mechanism; 31. Shell; 32. Water inlet pipe; 33. Water return pipe; 34. Second liquid pipe; 35. Water tank; 36. Liquid pump; 37. First liquid pipe; 4. Protective cover; 5. Connecting angle steel; 6. First connecting screw; 7. Circuit board; 8. Heat spreader; 9. Liquid chamber; 10. Second connecting screw; 11. Wire opening. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, 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.

[0029] Please see attached Figures 1 to 5 As shown, a power conversion and control device in an embodiment of the utility model includes a shell 1, a heat dissipation mechanism 2 is fixedly arranged on the upper end surface of the shell 1, a coolant circulation mechanism 3 is fixedly arranged on one side of the shell 1, the heat dissipation mechanism 2 is arranged to dissipate the heat of the coolant after use, and the coolant circulation mechanism 3 is arranged to drive the coolant to circulate.

[0030] A circuit board 7 is fixedly arranged inside the housing 1, and a heat spreader 8 is fixedly connected between one side of the circuit board 7 and the coolant circulation mechanism 3. A liquid cavity 9 is opened inside the heat spreader 8, and the MOS tube of the circuit board 7 is installed on the heat spreader 8. The heat generated by the MOS tube during operation will be conducted to the heat spreader 8. The liquid cavity 9 opened inside the heat spreader 8 can pass low-temperature coolant. The coolant can efficiently exchange heat with the heat spreader 8, thereby reducing the temperature of the heat spreader 8, thereby reducing the temperature of the MOS tube and preventing overheating.

[0031] The heat dissipation mechanism 2 includes a plurality of heat sinks 21 fixedly connected to the outer shell 1, and a serpentine heat dissipation tube 22 is fixedly inserted between the plurality of heat sinks 21. The serpentine heat dissipation tube 22 is made of copper tube and has high heat conduction efficiency. The heat sink 21 is made of aluminum and has good thermal conductivity. At the same time, it has a large contact area with the air, and can quickly dissipate the heat of the serpentine heat dissipation tube 22.

[0032] The coolant circulation mechanism 3 includes a shell 31, a water tank 35 is fixed inside the shell 31, a liquid pump 36 is fixedly connected to the shell 31 on the upper side of the water tank 35, the output end of the liquid pump 36 is fixedly connected to a water inlet pipe 32, the upper end of the water inlet pipe 32 extends out of the shell 31 and is fixedly connected to one end of the serpentine heat dissipation tube 22, the other end of the serpentine heat dissipation tube 22 is fixedly connected to a return pipe 33, the lower end of the return pipe 33 extends into the shell 31 and is connected to the water tank 35, the input end of the liquid pump 36 is fixedly connected to a first liquid pipe 37, the other end of the first liquid pipe 37 is connected to the liquid chamber 9, and a second liquid pipe 34 is fixedly connected between the water tank 35 and the liquid chamber 9.

[0033] When the coolant circulation mechanism 3 is in use, coolant is provided inside the water tank 35 and the liquid cavity 9. The liquid pump 36 sucks the coolant inside the liquid cavity 9 through the first liquid pipe 37. The liquid pump 36 passes the coolant into the serpentine heat dissipation tube 22 through the water inlet pipe 32. After passing through the serpentine heat dissipation tube 22, the coolant enters the water tank 35 through the return pipe 33. The water tank 35 is connected to the liquid cavity 9 through the second liquid pipe 34, so that the coolant can enter the liquid cavity 9 again, thereby completing the coolant circulation.

[0034] A connecting angle steel 5 is fixedly connected to one side of the upper end surface of the shell 31. The heat dissipation mechanism 2 also includes a heat dissipation fan 23. The heat dissipation fan 23 is arranged at one end of the heat sink 21 and is arranged perpendicular to the heat sink 21. One side of the heat dissipation fan 23 is fixedly connected to the connecting angle steel 5 by a first connecting screw 6. The side of the connecting angle steel 5 close to the shell 31 is fixedly connected to a protective cover 4 by a second connecting screw 10. The protective cover 4 is covered on the upper end surface of the shell 31. The heat dissipation fan 23 can accelerate air circulation, thereby improving the heat dissipation effect of the heat sink 21 and the serpentine heat pipe 22, and the airflow directly passes through the gaps between the multiple heat sinks 21. The airflow is unobstructed and can fully contact the heat sink 21. The heat dissipation effect is strong and the efficiency is high. The protective cover 4 can protect the connection between the water inlet pipe 32 and the return pipe 33 and the serpentine heat pipe 22 to prevent the pipe connection from being damaged by external collisions, and the safety is strong.

[0035] A wire opening 11 is fixedly provided at one end of the housing 1 , and the wire opening 11 is provided to facilitate the wires of the circuit board 7 to pass through.

[0036] The serpentine heat pipe 22 is made of copper, and the heat sink 21 and the shell 1 are both made of aluminum. The serpentine heat pipe 22 made of copper has good thermal conductivity and high heat conduction efficiency, while the heat sink 21 and the shell 1 made of aluminum have good thermal conductivity and low cost.

[0037] Working principle: When in use, the MOS tube of the circuit board 7 in the device is installed on the heat spreader 8. The heat generated by the MOS tube during operation will be transferred to the heat spreader 8. The liquid cavity 9 opened inside the heat spreader 8 can be filled with low-temperature coolant. The coolant can efficiently exchange heat with the heat spreader 8 to reduce the temperature of the heat spreader 8, thereby reducing the temperature of the MOS tube and preventing overheating. At the same time, the liquid pump 36 is set to suck the coolant in the liquid cavity 9 through the first liquid pipe 37. The liquid pump 36 passes the coolant into the serpentine heat dissipation pipe 22 through the water inlet pipe 32. The serpentine heat dissipation pipe 22 is made of copper pipe, and the heat conduction effect is good. The heat sink 21 is made of aluminum and has good thermal conductivity. At the same time, the contact area with the air is large, so the heat of the serpentine heat pipe 22 can be quickly dissipated. At this time, the heat dissipation fan 23 can be started, and the heat dissipation fan 23 can accelerate the air circulation, thereby improving the heat dissipation effect of the heat sink 21 and the serpentine heat pipe 22. After the coolant is cooled by the serpentine heat pipe 22, it enters the water tank 35 through the return pipe 33, and the water tank 35 is connected with the liquid cavity 9 through the second liquid pipe 34, so that the coolant can enter the liquid cavity 9 again, thereby completing the coolant circulation, which can be used continuously for a long time and has strong reliability.

[0038] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A power conversion and control device, comprising a housing (1), characterized in that: A heat dissipation mechanism (2) is fixedly arranged on the upper end surface of the shell (1), and a cooling liquid circulation mechanism (3) is fixedly arranged on one side of the shell (1); a circuit board (7) is fixedly arranged inside the shell (1), a heat spreader (8) is fixedly connected between one side of the circuit board (7) and the cooling liquid circulation mechanism (3), and a liquid cavity (9) is opened inside the heat spreader (8); the heat dissipation mechanism (2) includes a plurality of heat sinks (21) fixedly connected to the shell (1), and serpentine heat dissipation pipes (22) are fixedly arranged between the plurality of heat sinks (21); the cooling liquid circulation mechanism (3) includes a shell (31), a water tank (35) is fixedly arranged inside the shell (31), and a liquid pump (36) is fixedly connected to the inside of the shell (31) on the upper side of the water tank (35).

2. A power conversion and control device according to claim 1, characterized in that: The output end of the liquid pump (36) is fixedly connected to a water inlet pipe (32), the upper end of the water inlet pipe (32) extends out of the housing (31) and is fixedly connected to one end of the serpentine heat dissipation pipe (22), the other end of the serpentine heat dissipation pipe (22) is fixedly connected to a water return pipe (33), the lower end of the water return pipe (33) extends into the housing (31) and is connected to a water tank (35).

3. A power conversion and control device according to claim 1, characterized in that: The input end of the liquid pump (36) is fixedly connected to a first liquid pipe (37), the other end of the first liquid pipe (37) is in communication with the liquid chamber (9), and a second liquid pipe (34) is fixedly connected between the water tank (35) and the liquid chamber (9).

4. A power conversion and control device according to claim 1, characterized in that: A connecting angle steel (5) is fixedly connected to one side of the upper end surface of the shell (31). The heat dissipation mechanism (2) further comprises a heat dissipation fan (23). The heat dissipation fan (23) is arranged at one end of the heat dissipation fin (21) and is arranged perpendicular to the heat dissipation fin (21).

5. A power conversion and control device according to claim 4, characterized in that: One side of the heat dissipation fan (23) is fixedly connected to the connecting angle steel (5) via a first connecting screw (6).

6. A power conversion and control device according to claim 4, characterized in that: A protective cover (4) is fixedly connected to one side of the connecting angle steel (5) close to the housing (31) via a second connecting screw (10), and the protective cover (4) is arranged on the upper end surface of the housing (31).

7. A power conversion and control device according to claim 1, characterized in that: A wire passage opening (11) is fixedly provided at one end of the housing (1).

8. A power conversion and control device according to claim 1, characterized in that: The serpentine heat dissipation pipe (22) is made of copper, and the heat sink (21) and the housing (1) are both made of aluminum.

Images