CN111384012A - Frequency converter IGBT module liquid cooling heat abstractor of electronic loader - Google Patents

Abstract

The invention relates to an electric loader, in particular to a liquid cooling heat dissipation device for an IGBT module of a frequency converter of the electric loader. The IGBT module is tightly attached to the upper surface of a top panel of the water cooling head, and a plurality of vertical radiating fins are densely distributed on the lower surface of the top panel of the water cooling head; the water pump is arranged at the bottom in the water-cooling head, the inlet of the water pump is communicated with the water outlet chamber of the radiator through a liquid inlet pipe, the water-cooling head is communicated with the water inlet chamber of the radiator through a liquid outlet pipe, and a plurality of heat dissipation water channels are arranged between the water outlet chamber and the water inlet chamber of the radiator; and a fan is arranged on one side of the radiator, and the water pump and the fan are electrically connected with the control circuit. According to the IGBT module, the heat is quickly dissipated through the heat dissipation fins, and the heat dissipation fins are cooled by water, so that the heat dissipation efficiency of the IGBT module is improved; the fan increases the heat dissipation power of the heat sink, so that the functions of the heat sink are centralized; the water cooling head adopts direct injection pressurization in the cavity, so that the heat exchange efficiency is higher, and the service life of the pump body is longer.

Description

Inverter IGBT module liquid cooling device for electric loader

technical field

The invention relates to an electric loader, in particular to a liquid-cooling radiator for an inverter IGBT mold of the electric loader.

Background technique

IGBT module is the core device for energy conversion and transmission, commonly known as the "CPU" of power electronic devices, and is widely used in rail transit, smart grid, aerospace, electric vehicles and new energy equipment. The main motor of the electric loader adopts a frequency conversion motor, and the main motor is adjusted by the inverter to adjust the speed. The IGBT module is applied to the inverter of the electric loader, and the IGBT module will generate a lot of heat during operation. At present, the IGBT module adopts an air-cooled radiator. Affected by the structure and working conditions of the electric loader, the air-cooled heat dissipation efficiency is not high, and the poor heat dissipation will affect the normal operation of the IGBT module, thereby affecting the normal operation of the electric loader.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a liquid-cooled heat dissipation device for an inverter IGBT module of an electric loader, so as to improve the heat dissipation efficiency of the IGBT module.

The technical scheme adopted by the present invention to solve the technical problem is:

An inverter IGBT module liquid-cooling heat dissipation device for an electric loader, comprising a water-cooling head and a water pump, wherein the water-cooling head is a closed box structure, the IGBT module is closely installed on the upper surface of the top panel of the water-cooling head, and the The lower surface of the top panel is densely covered with a plurality of vertical cooling fins; the water pump is placed at the bottom of the water cooling head, the inlet of the water pump is connected with the water outlet chamber of the radiator through the liquid inlet pipe, and the water cooling head is connected with the inlet of the radiator through the liquid outlet pipe. The water chambers are connected, and a plurality of cooling water channels are arranged between the water outlet chamber and the water inlet chamber of the radiator; a fan is installed on one side of the radiator, and the water pump and the fan are respectively electrically connected to the control circuit.

The present invention that adopts the above-mentioned technical scheme, compared with the prior art, the beneficial effects are:

The IGBT module rapidly dissipates heat through the cooling fins, which are cooled by water, which improves the heat dissipation efficiency, reduces the working temperature of the IGBT module, and improves the working stability of the IGBT module; It reduces the space occupied by the device and increases the heat dissipation speed; the water-cooled head adopts the direct injection pressure in the cavity, which makes the heat exchange efficiency higher and the pump body longer life.

Further, the optimization scheme of the present invention is:

A circulating water channel is arranged in the water cooling head, and the circulating water channel makes the cooling liquid flow from the outlet of the water pump to the liquid outlet pipe through the cooling fins.

Thermal grease is applied between the IGBT module and the water block.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the embodiment of the present invention;

2 is a schematic diagram of the connection between an IGBT module and a water-cooled head according to an embodiment of the present invention;

Fig. 3 is the heat dissipation principle diagram of the embodiment of the present invention;

In the figure: IGBT module 1; water block 2; circulating water channel 2-1; radiator 3; liquid inlet pipe 4; liquid outlet pipe 5; fan 6; thermal grease 7; water pump power cord 8; fan power cord 9; heat dissipation fins 10; water pump 11.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Referring to FIG. 1 , the present embodiment is a liquid cooling device for an inverter IGBT module of an electric loader, which is composed of a water cooling head 2 , a radiator 3 , a liquid inlet pipe 4 , a liquid outlet pipe 5 and a fan 6 . The water-cooling head 2 is a closed rectangular box structure. The lower surface of the top panel of the water-cooling head 2 is densely covered with a plurality of vertical heat dissipation fins 10. Specifically, the material of the heat dissipation fins 10 is copper or aluminum, and the heat dissipation fins 10 Increase the contact area between the thermally conductive copper surface and the cooling medium in the water cooling head 2 . The IGBT module 1 is closely installed on the upper surface of the top panel of the water-cooled head 2. Thermal grease is coated between the IGBT module 1 and the water-cooled head 2, which can make the heat generated by the IGBT module 1 more smoothly transferred to the water-cooled head 2. Cooling fins 10 .

A water pump 11 is installed at the bottom of the water-cooled head 2. The inlet end of the water pump 11 is placed outside the water-cooled head 2. The water-cooled head 2 is provided with a liquid outlet. -1 Make the cooling liquid flow from the outlet of the water pump 11 to the liquid outlet of the water cooling head 2 through the cooling fins 10 . The liquid outlet of the water cooling head 2 is communicated with the water inlet chamber of the radiator 3 through the liquid outlet pipe 5, the inlet of the water pump 11 is communicated with the water outlet chamber of the radiator 3 through the liquid inlet pipe 4, and the water outlet chamber of the radiator 3 is connected with the water inlet chamber. There are multiple cooling channels in between. A fan 6 is installed on one side of the radiator 3 , and the water pump power line 8 and the fan power line 9 are respectively electrically connected to the control circuit. The fan 6 increases the heat dissipation power of the radiator 3, so that the functions of the radiator 3 are concentrated, which not only reduces the space occupied by the device but also increases the heat dissipation speed. The water-cooling head 2 adopts the direct injection pressure in the cavity, so that the heat exchange efficiency is higher, and the life of the water pump 11 is longer.

The working process of this embodiment is (as shown in FIG. 3 ), the water cooling head 2 , the radiator 3 , the liquid inlet pipe 4 and the liquid outlet pipe 5 are filled with cooling medium. In this embodiment, the cooling medium is water or cooling liquid , When the main motor of the electric loader starts to work, the IGBT module 1 used for motor system control will quickly generate heat, and at the same time, the water block 2 and the water pump 11 will start to work after powering on, and the water in the water channel will start to flow in the water block 2 and the radiator. 3, the heat released by the IGBT module 1 is transferred to the heat dissipation fins 10 in the water-cooled head 2 through the thermal grease, and the cooling medium takes most of the heat away by circulating in the circulating water channel 2-1 of the water-cooled head 2. Flow into the radiator 3, the radiator 3 is provided with a water-cooling plate, the water-cooling plate is highly integrated, and the heat dissipation speed is fast, and at the same time, a fan 6 is arranged on the radiator 3, and the heat is dissipated from the radiator 3 as soon as possible by convection heat dissipation. The temperature of the cooling medium is reduced, and the next cooling cycle is entered. In this way, the circulating flow of the cooling medium quickly and effectively dissipates the heat generated by the IGBT.

The above descriptions are only preferred feasible embodiments of the present invention, and are not intended to limit the scope of rights of the present invention. Any equivalent structural changes made by using the contents of the description and accompanying drawings of the present invention are included in the scope of rights of the present invention. .

Claims (3)

1. A frequency converter IGBT module liquid-cooling radiator of an electric loader, comprising a water-cooled head, a water pump, and it is characterized in that: the water-cooled head is a closed box structure, and the IGBT module is closely installed on the top panel of the water-cooled head. The upper surface and the lower surface of the top panel of the water-cooled head are densely covered with a plurality of vertical cooling fins; the water pump is placed at the bottom of the water-cooled head, the inlet of the water pump is connected to the water outlet chamber of the radiator through the liquid inlet pipe, and the water-cooled head passes the liquid outlet The pipe communicates with the water inlet chamber of the radiator, and a plurality of cooling water channels are arranged between the water outlet chamber and the water inlet chamber of the radiator; a fan is installed on one side of the radiator, and the water pump and the fan are respectively electrically connected to the control circuit. 2. The inverter IGBT module liquid-cooling heat dissipation device of an electric loader according to claim 1, wherein the water-cooling head is provided with a back-shaped circulating water channel, and the circulating water channel enables the cooling liquid to pass through the cooling fins from the outlet of the water pump The flakes flow to the outlet tube. 3. The inverter IGBT module liquid-cooling heat dissipation device of an electric loader according to claim 1, wherein a thermally conductive silicone grease is coated between the IGBT module and the top panel of the water-cooled head.

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