CN211064034U - A liquid-cooled heat dissipation assembly for cooling a high-voltage motor driver - Google Patents

Abstract

The utility model relates to a liquid-cooled heat dissipation assembly for cooling a high-voltage motor driver, comprising a casing, a heat dissipation assembly, a water channel, a circulating water pump and a circulating water pump controller; the heat dissipation assembly includes a heat dissipation fin plate, a heat dissipation plate and a serpentine tube; The heat dissipation plate is fixed on the heat dissipation fin plate, and the bottom of the heat dissipation fin plate is provided with heat dissipation fins; the serpentine tube is embedded between the heat dissipation plate and the heat dissipation fin plate, and the serpentine tube is filled with cooling medium; the output end of the circulating water pump It is sealed and connected with the inlet of the serpentine tube; the water channel is arranged in the box of the high-voltage motor driver in an S-shape, and the water channel is provided with branch pipes extending to the adjacent installation holes of the box of the high-voltage motor driver, one of which is connected to the serpentine tube. The outlet of the other branch pipe is connected to the input end of the circulating water pump in a sealed manner, and the nozzles of the other branch pipes are sealed by the sealing cover; the cooling medium is filled in the water channel. The heat dissipation assembly exchanges heat generated inside the high-voltage motor driver with the external environment through the circulating flow of the cooling medium.

Description

A liquid-cooled heat dissipation assembly for cooling a high-voltage motor driver

technical field

The utility model relates to the technical field of heat dissipation of motor drivers, in particular to a liquid-cooled heat dissipation assembly for cooling a high-voltage motor driver.

Background technique

With the increase in international trade, the demand for heavy-duty automatic transport vehicles in ports is also increasing. In order to improve the efficiency of port transshipment, higher requirements are put forward for the load capacity, motion performance, and reliability of the driving system of the port heavy-duty automatic transport vehicles. The high-voltage motor driver is used as the traction action execution component of the high-speed and heavy-duty automatic transport vehicle in the port, and its heat dissipation performance directly affects the transfer efficiency and working stability of the freight vehicle.

The document with the application number of 201721170118.4 discloses a servo motor driver. The driver body is provided with a temperature detection device, a comparison device, a control device, a starting device, a cooling fan, and a heat sink. Accelerates air flow, thereby improving heat dissipation. The heat dissipation method combined with the heat dissipation structure and the heat dissipation fan has low heat dissipation efficiency; it cannot meet the heat dissipation requirements of the high-voltage motor driver with high heating power of the internal electrical components, especially in the high-speed and heavy-load environment of the port.

At present, there are few applications for water-cooled heat dissipation inside the high-voltage motor driver. Generally speaking, the calorific value of ordinary motor drivers is not high, and only relying on its own air-cooled structure is enough to ensure that the working temperature is within a safe range; For the high-voltage motor driver on the loading truck, the external ambient temperature will be very high even in the open air in winter. It is difficult to meet the heat dissipation requirements by air cooling or air cooling alone, and the cooling effect is poor.

Utility model content

In view of the deficiencies of the prior art, the technical problem to be solved by the present invention is to provide a liquid-cooled heat dissipation assembly for cooling a high-voltage motor driver.

The technical solution of the present utility model to solve the technical problem is to provide a liquid-cooled heat dissipation assembly for cooling a high-voltage motor driver, which is characterized in that it includes a casing, a heat dissipation component, a water channel, a circulating water pump and a circulating water pump controller; The component includes a cooling fin plate, a cooling plate and a serpentine tube;

The heat dissipation plate is fixed on the heat dissipation fin plate, and the bottom of the heat dissipation fin plate is provided with heat dissipation fins; the serpentine tube is embedded between the heat dissipation plate and the heat dissipation fin plate, and the serpentine tube is filled with a cooling medium;

The outer casing is covered on the top of the heat dissipation fin plate, so that a closed chamber is formed between the outer casing and the heat dissipation fin plate; the circulating water pump, the circulating water pump controller and the high-voltage motor driver are fixed on the heat dissipation plate and are located in the closed chamber; The water pump is connected in communication with the circulating water pump controller; the output end of the circulating water pump is sealedly connected with the inlet of the serpentine pipe;

The two opposite side walls of the box of the high-voltage motor driver are respectively provided with a plurality of installation holes; the water channels are arranged in the box of the high-voltage motor driver in an S shape, so that the water channels form a plurality of bending parts and a plurality of straight parts ; Each bending part is provided with a branch pipe extending to the adjacent installation hole, one branch pipe is connected with the outlet of the serpentine pipe through the water pipe joint, the other branch pipe is sealed with the input end of the circulating water pump through the connecting pipe, and the remaining branch pipes are The nozzle is sealed by a sealing cover; the water channel is filled with cooling medium.

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

In the utility model, a water channel is laid in the box body of the high-voltage motor driver. The bottom of the box body is provided with a cooling fin plate and a serpentine tube. The water channel is communicated with the serpentine tube. The circulating flow exchanges the heat generated inside the high-voltage motor driver with the external environment, thereby realizing the heat dissipation of the high-voltage motor driver and enhancing the heat dissipation effect; it overcomes the disadvantage that the air-cooled heat dissipation effect of the existing ordinary motor driver is poor.

The heat dissipation fin plate, the serpentine tube and the heat dissipation plate are filled with thermal conductive silicone grease, which increases the contact area between the three and improves the heat dissipation efficiency; the water channel and the heat transfer plate are also filled with thermal conductive silicone grease, which further improves the cooling efficiency.

Connecting the serpentine tube and the connecting tube to the branch pipes at different positions can adjust the effective distance of the cooling medium flowing through the water channel; if the heating power of the electrical components arranged in the sealed chamber of the high-voltage motor driver is not high, the cooling medium flowing through the water channel can be shortened. distance to reduce the power of the circulating water pump and save costs.

The circulating power of the cooling medium is provided by the circulating water pump, and the temperature sensor transmits the detected temperature of the cooling medium to the central processing unit. The central processing unit automatically adjusts the speed of the circulating water pump to effectively improve the heat dissipation effect.

The heat dissipation assembly of the utility model is especially suitable for the high-voltage motor driver in the port environment. The circulating water pump, the circulating water pump controller and the high-voltage motor driver are located in the closed chamber formed between the casing and the heat dissipation plate, preventing the circulating water pump and the circulating water pump controller. And the high-voltage motor driver is salt-corroded; the casing of the high-voltage motor driver is provided with a sealing ring and a sealing cover, which can further prevent the electrical components inside the high-voltage motor driver from being salt-corroded, help protect the internal electrical components of the high-voltage motor driver, and extend the service life and improve overall safety.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present utility model;

2 is a schematic structural diagram of a heat dissipation fin plate of the present invention;

3 is a schematic structural diagram of a heat dissipation plate of the present invention;

Fig. 4 is the structural representation of the serpentine tube of the utility model;

Fig. 5 is the structural schematic diagram of an angle after the utility model has removed the shell;

Fig. 6 is the structural representation of another angle after the utility model has removed the shell;

7 is a schematic structural diagram of a wiring isolation slot of the present invention;

8 is a schematic structural diagram of an angle of the box body of the present invention;

9 is a schematic structural diagram of another angle of the box body of the present invention;

10 is a schematic diagram of the arrangement of water channels in the box of the present invention;

11 is a schematic diagram of the connection between the first sealing ring and the second sealing cover of the present invention;

In the figure: 1. Shell; 2. High-voltage motor driver; 3. Circulating water pump; 4. Circulating water pump bracket; 5. Circulating water pump controller; 6. Water channel; 7. Cooling component; 8. Connecting pipe;

21, box body; 22, first sealing cover; 23, second sealing cover; 24, wiring port; 25, electrical interface; 26, wiring isolation slot; 27, water pipe connector; 28, first installation hole; 29, Sealing cover; 210, heat transfer plate; 211, first sealing ring; 212, second sealing ring; 213, second mounting hole; 261, second positioning hole; 262, threading hole; 263, second positioning post; 61 71, the heat dissipation fin plate; 72, the heat dissipation plate; 73, the serpentine tube; 74, the arc groove; 2101, the first positioning hole.

Detailed ways

The present utility model will be further described below in conjunction with the embodiments and the accompanying drawings. The specific embodiments are only used to further describe the present invention in detail, and do not limit the protection scope of the claims of the present application.

The utility model provides a liquid-cooled heat dissipation assembly (referred to as heat dissipation assembly, see Figures 1-11) for cooling a high-voltage motor driver, comprising a casing 1, a heat dissipation assembly 7, a water channel 6, a circulating water pump 3 and a circulating water pump control unit 5, the heat dissipation assembly 7 includes a heat dissipation fin plate 71, a heat dissipation plate 72 and a serpentine tube 73;

The heat dissipation plate 72 is fixed on the heat dissipation fin plate 71, and the bottom of the heat dissipation fin plate 71 is provided with heat dissipation fins; the bottom of the heat dissipation plate 72 and the top of the heat dissipation fin plate 71 are respectively provided with arc grooves 74, two The arc-shaped groove 74 constitutes a groove; the serpentine tube 73 is embedded in the groove, the inlet and outlet of the serpentine tube 73 are respectively exposed outside the cooling plate 72, and the serpentine tube 73 is filled with a cooling medium; The heat dissipation plate 72 and the serpentine tube 73 are evenly filled with thermally conductive silicone grease, which increases the contact area between the three and improves the heat dissipation efficiency;

The bottom of the casing 1 is open, and the casing 1 is covered on the top of the heat dissipation fin plate 71, so that a closed chamber is formed between the casing 1 and the heat dissipation fin plate 71; the circulating water pump 3 is fixed on the heat dissipation plate 72 through the circulating water pump bracket 4 , the circulating water pump controller 5 and the high-voltage motor driver 2 are fixed on the cooling plate 72; the circulating water pump 3, the circulating water pump controller 5 and the high-voltage motor driver 2 are located in the closed chamber to prevent salt corrosion; the inlet of the serpentine tube 73 is connected to the circulation The output end of the water pump 3 is sealed and connected; the circulating water pump 3 is communicated with the circulating water pump controller 5; a plurality of second mounting holes 213 are provided;

The water channel 6 is arranged in the high-voltage motor driver 2 in an S shape, so that the water channel 6 forms a plurality of bent parts and a plurality of straight parts; each bent part is provided with a corresponding first installation hole 28 or a second installation hole 213. One of the branch pipes extending to the first mounting hole 28 is threadedly connected to the outlet of the serpentine pipe 73 through a water pipe connector 27; one of the branch pipes extending to the second mounting hole 213 Another water pipe connector 27 is threadedly connected to one end of the connecting pipe 8, and the other end of the connecting pipe 8 is sealed and connected to the input end of the circulating water pump 3, so that the water channel 6 and the serpentine pipe 73 form a passage; the nozzles of the remaining branch pipes are sealed The cover 29 is sealed; the water channel 6 is filled with cooling medium; according to the actual heating power consumption, the outlet of the serpentine tube 73 and the connecting pipe 8 are connected to branch pipes at different positions, and the effective distance of the cooling medium flowing through the water channel 6 can be adjusted.

The high-voltage motor driver 2 includes a box body 21, a wiring isolation groove 26, a first sealing cover 22 and a second sealing cover 23; the wiring isolation groove 26 is fixed on one side of the box body 21 through a second positioning post 263, The two positioning posts 263 are matched with the second positioning holes 261 of the wiring isolation groove 26 ; the first sealing cover 22 and the second sealing cover 23 are respectively fixed on the top of the box body 21 by screws, and the second sealing cover 23 is facing the wiring isolation groove 26 ; The wiring isolation slot 26 is used for the wiring of the high-voltage motor driver 2;

The side wall of the box body 21 is provided with an electrical interface 25, a plurality of wiring ports 24, and a plurality of first mounting holes 28 and second mounting holes 213. The electrical interface 25 is used to connect an external high-voltage motor, and the wiring port 24 is used for Connect the signal line or power line;

A heat transfer plate 210 is installed on each straight part of the water channel 6 through a first positioning column 61, and the first positioning column 61 is matched with the first positioning hole 2101 of the heat transfer plate 210; each heat transfer plate 210 is connected to the water channel. Thermal grease is coated between 6; electrical components are installed on the heat transfer plate 210; the cooling medium, thereby realizing the liquid-cooling heat dissipation of the high-voltage motor driver 2;

The box body 21 also includes a first sealing ring 211 and a second sealing ring 212. The first sealing ring 211 is fixed on the edge of the wiring isolation groove 26 to achieve the sealing between the wiring isolation groove 26 and the second sealing cover 23 and prevent further wiring. Corrosion by salt; the second sealing ring 212 is fixed on the edge of the box body 21 where the first sealing cover 22 is arranged, so as to realize the sealing of the box body 21 and the first sealing cover 22, and further prevent the electrical components of the high-voltage motor driver 2 from being corroded by salt;

The side wall of the wiring isolation slot 26 is provided with the same number of wiring holes 262 as the wiring ports 24 of the box body 21. Each wiring hole 262 corresponds to a wiring port 24 and is coaxial with the corresponding wiring port 24, forming a possible The passage through which the external electrical connection lines pass;

The cooling plate 72 is made of aluminum, the serpentine tube 73 is made of copper, and the water channel 6 is made of aluminum.

The cooling medium is water or ethylene glycol aqueous solution; the thermal conductive silicone grease is organic silicone.

The circulating water pump 3 and the circulating water pump controller 5 are not limited to being fixed on the cooling plate 72 by welding, screw connection, etc.;

The circulating water pump controller 5 is internally integrated with a temperature sensor and a central processing unit; the temperature sensor is connected to the central processing unit, and the central processing unit communicates with the circulating water pump 3; the temperature sensor is used to detect the temperature of the cooling medium; the temperature The sensor is a digital temperature sensor, the model is DS18B20, which outputs digital signals. It has the characteristics of small size, low hardware overhead, strong anti-interference ability and high precision; Various small space equipment digital temperature measurement and control field; the model of the central processing unit is EXYNOS 4412, which has the characteristics of low power consumption, low price, and can quickly respond to external signals, and is mostly used in the field of microcontrollers.

The work flow and principle of the present utility model are:

When in use, the electrical components that need to be cooled (such as integrated circuit boards with higher power) are installed on the upper surface of the heat transfer plate 210, and the electrical components are completely sealed in the box 21 of the high-voltage motor driver 2, which can avoid the electrical components and the port height. Contact in a humid environment can prevent moisture and dust; the cooling medium can choose ethylene glycol aqueous solution to improve the heat dissipation effect, and when the heating power of the electrical components is low, liquid water can also be selected to reduce the cost;

During operation, the heat inside the high-voltage motor driver 2 is transferred to the cooling medium in the water channel 6 through the heat transfer plate 210 , the cooling medium flows through the serpentine tube 73 under the push of the circulating water pump 3 , and the heat of the cooling medium is transferred through the serpentine tube 73 . to the heat dissipation fin plate 71, and finally the heat dissipation fin plate exchanges heat with the external environment, and transfers the heat inside the high-voltage motor driver 2 to the external environment to achieve the purpose of cooling the electrical components; if necessary, the heat transfer plate 210 and the electrical Add thermal grease between components to increase the heat dissipation contact area and improve the heat dissipation effect;

In order to realize the function of real-time regulation of the cooling effect, the temperature sensor integrated in the circulating water pump controller 5 transmits the temperature value of the detected cooling medium to the central processing unit in real time, and the central processing unit compares the detection value of the temperature sensor with the set threshold value. Comparison; if the detected value is higher than the set threshold, it means that the temperature is too high, the central processing unit controls the rotation speed of the circulating water pump 3 to increase, accelerates the flow of the cooling medium, and improves the heat dissipation efficiency; when the detected temperature value of the temperature sensor is lower than the set threshold, the The central processing unit controls the rotating speed of the circulating water pump 3 to decrease, thereby reducing the operating cost and saving power resources.

The points not mentioned in the present invention are applicable to the prior art.

Claims (7)

1. A liquid cooling heat dissipation assembly for cooling a high-voltage motor driver is characterized by comprising a shell, a heat dissipation component, a water channel, a circulating water pump and a circulating water pump controller; the heat dissipation assembly comprises a heat dissipation fin plate, a heat dissipation plate and a coiled pipe;

the heat dissipation plate is fixed on the heat dissipation fin plate, and the bottom of the heat dissipation fin plate is provided with heat dissipation fins; the serpentine pipe is embedded between the heat dissipation plate and the heat dissipation fin plate, and cooling media are filled in the serpentine pipe;

the shell is covered on the top of the radiating fin plate, so that a closed cavity is formed between the shell and the radiating fin plate; the circulating water pump, the circulating water pump controller and the high-voltage motor driver are fixed on the heat dissipation plate and are positioned in the closed cavity; the circulating water pump is in communication connection with a circulating water pump controller; the output end of the circulating water pump is hermetically connected with the inlet of the coiled pipe;

a plurality of mounting holes are respectively formed in two opposite side walls of a box body of the high-voltage motor driver; the water channel is distributed in the box body of the high-voltage motor driver in an S shape, so that the water channel forms a plurality of bending parts and a plurality of straight line parts; each bending part is provided with a branch pipe extending to the adjacent mounting hole, one branch pipe is connected with the outlet of the coiled pipe through a water pipe connector, the other branch pipe is hermetically connected with the input end of the circulating water pump through a connecting pipe, and the pipe orifices of the other branch pipes are sealed through sealing covers; the water channel is filled with a cooling medium.

2. The liquid-cooled heat sink assembly as recited in claim 1, wherein each of the straight portions of the water channel has a heat transfer plate, and a thermally conductive silicone grease is applied between each of the heat transfer plates and the water channel.

3. The liquid-cooled heat dissipation assembly for cooling a high-voltage motor driver as recited in claim 2, wherein the thermally conductive silicone grease is an organosilicone.

4. The liquid-cooled heat sink assembly as recited in claim 2, wherein said heat transfer plate is formed of aluminum.

5. The liquid-cooled heat dissipation assembly for cooling a high-voltage motor driver as recited in claim 1, wherein heat conductive silicone grease is uniformly filled among the heat dissipation fin plate, the heat dissipation plate and the serpentine tube.

6. The liquid-cooled heat sink assembly as claimed in claim 1, wherein the heat sink plate is made of aluminum, the coil is made of copper, and the water channel is made of aluminum.

7. The liquid-cooled heat dissipation assembly for cooling a high-voltage motor driver as recited in claim 1, wherein the cooling medium is water or an aqueous solution of ethylene glycol.

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