Heat pipe radiator for a driver integrated with a motor

Abstract

The present invention discloses a heat pipe radiator for a driver integrated with a motor, and relates to the field of motor integrated controller radiators. The main heating element of the driver of the motor integrated controller is the power module. At present, the motor integrated driver adopts two sets of cooling systems, which are large in size and high in cost except for the cooling by the motor fan or the motor external fan. The present invention includes a radiator body, and the outer periphery of the radiator body is arranged with heat dissipation ribs. The bottom of the inner cavity of the radiator body is provided with a power module mounting seat and a plurality of parallel arranged heat pipes. The heat pipe includes vertical pipe parts on both sides and a bottom pipe part, and the bottom pipe parts all pass through the power module mounting seat. A cooling medium is arranged in the heat pipe. The cooling medium in the heat pipe takes away the heat from the power module mounting seat, transfers the heat to the heat dissipation ribs, and cools down the temperature by the cooling wind of the motor fan to achieve cooling and heat dissipation. The overall structure is simple, and the heat dissipation of the driver is achieved by only one set of active cooling fans, which reduces the volume and weight.

Description

Technical Field

[0001] The invention relates to the field of motor integrated controller radiators, and in particular to a heat pipe radiator for a driver integrated with a motor. Background Art

[0002] The main heat-generating component of the driver of the motor integrated controller is the power module. When the driver is working, the power module generates a lot of heat. Therefore, a more complete cooling system is required for cooling. At present, the motor integrated driver adopts two cooling systems. In addition to the motor fan or the motor external fan cooling, the driver itself is also equipped with a cooling fan. Although the two cooling systems can better cool the driver, they are large in size and high in cost, and are difficult to apply to specific application scenarios that have strict requirements on the radial dimensions of certain motors. Summary of the invention

[0003] The technical problem to be solved and the technical task proposed by the present invention are to improve and perfect the existing technical solutions, and provide a heat pipe radiator for a driver integrated with a motor, so as to reduce the volume of the heat dissipation device and reduce the cost while ensuring the heat dissipation effect. To this end, the present invention adopts the following technical solutions.

[0004] A heat pipe radiator for a driver integrated with a motor, the radiator being arranged in a driver air duct at the rear of the motor, the air outlet of the driver air duct being provided with an air outlet plate with air outlet holes, the radiator comprising a radiator body, the radiator body being hollow and open at the upper end, heat dissipation ribs being arranged around the outer periphery of the radiator body, a power module mounting seat having a top surface which can be fitted with a driver power module being mounted at the bottom of the inner cavity of the radiator body, a plurality of heat pipes arranged in parallel being arranged in the radiator body, the heat pipe comprising two side vertical pipe portions connected and fixed to the inner side wall of the radiator body and a bottom pipe portion matching the bottom of the radiator body, the bottom pipe portion of the heat pipe passing through or abutting against the power module mounting seat, and a cooling medium being arranged in the heat pipe. Through the motor integrated cooling fan or the motor external fan, the cooling air is blown through the motor to the radiator at the rear of the motor, blown through the heat dissipation ribs, and discharged through the air outlet plate. The cooling medium in the heat pipe takes away the heat from the power module mounting seat, and uses the extremely high thermal conductivity of the heat pipe to transfer the heat to the air-cooled heat dissipation ribs. The cooling of the cooling air successfully solves the problem of high heat flux density of the driver and realizes the cooling cycle. The overall structure of the radiator is simple. Only a set of active cooling devices such as the motor integrated cooling fan or the motor external drive fan are used to realize the heat dissipation of the driver. There is no need to increase the radial size, only the axial length of the motor is increased, which effectively reduces the volume and weight. It has high reliability and reduces costs, realizes a lightweight structure, can be easily integrated with the motor, and can be effectively applied to certain specific application scenarios with strict radial size requirements. The cooling medium inside the heat pipe dissipates heat by phase change after heating.

[0005] As a preferred technical means: the bottom pipe portion of each heat pipe is perpendicular to the length direction of the power module mounting seat. More heat pipes can be arranged, and the heat transfer efficiency is high.

[0006] As a preferred technical means: the bottom pipe of each heat pipe passes through the upper end of the power module mounting seat and is flattened to be flush with the mounting top surface of the power module mounting seat. This can better fit the bottom of the power module and improve the heat transfer efficiency.

[0007] As a preferred technical means: the bottom tubes of the heat pipes are arranged at equal intervals, which can completely take away the heat from the bottom of the power module and conduct it to the side wall of the radiator body more evenly.

[0008] As a preferred technical means: the cooling medium is a cooling medium that changes from liquid to vapor when absorbing heat and changes from vapor to liquid after releasing heat. When the driver is working, the power module generates a large amount of heat, and the liquid cooling medium inside the heat pipe vaporizes quickly. Under the action of capillary force, it flows to the cold end of the heat pipe. The air forced to flow around the heat dissipation ribs will quickly take away the heat, and the gaseous medium inside the heat pipe will liquefy and flow back to the hot end of the heat pipe, forming a cooling loop.

[0009] As a preferred technical means: the inner wall of the radiator body is provided with a vertical arc groove, and the two sides of the heat pipe are embedded in the arc groove, so that the heat pipe can be easily positioned and installed on the inner wall of the radiator body.

[0010] As a preferred technical means: the heat dissipation ribs are all axially oriented, extending from the outer side of the radiator body to the bottom back of the radiator body, and arranged radially on the bottom back. The cooling wind from the motor fan blows toward the bottom back of the radiator body, and can be evenly distributed to the side of the radiator body for cooling and heat dissipation through the guiding effect of the radial heat dissipation ribs.

[0011] As a preferred technical means: circumferential reinforcement ribs are provided between adjacent heat dissipation ribs. Adding circumferential reinforcement ribs between adjacent heat dissipation ribs effectively improves the structural strength while increasing the heat dissipation area and improving the cooling efficiency. When the height of the reinforcement ribs is low, it can avoid blocking the cooling air and reducing the cooling efficiency.

[0012] As a preferred technical means: the radiator is made of aluminum, which is light in weight and has good heat conduction effect.

[0013] As a preferred technical means: thermal conductive grease is provided between the power module and the mounting top surface of the power module mounting seat, so that the two are in full contact and the heat conduction effect is better.

[0014] As a preferred technical means: the heat pipe is fixed to the bottom and side surfaces of the radiator body by welding. The connection is firm and reliable.

[0015] Beneficial effect: Through the cooling cycle of the cooling medium in the heat pipe, the heat is conducted from the driver power module to the side wall of the radiator body and the heat dissipation ribs, and is cooled by the cooling air of the motor fan, successfully solving the problem of high heat flux density of the driver. The overall structure of the radiator is simple, and the driver heat dissipation is achieved through a set of active cooling devices such as a motor integrated cooling fan or a motor external drive fan. There is no need to increase the radial dimension, only the axial length of the motor is increased, which effectively reduces the volume and weight, realizes a lightweight structure, improves reliability, and reduces costs. It can be easily integrated with the motor and can be effectively applied to specific application scenarios with strict requirements on radial dimensions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the radiator of the present invention.

[0017] Figure 2 It is another schematic diagram of the radiator of the present invention.

[0018] Figure 3 It is a schematic diagram of the radiator position and cooling wind flow direction of the present invention.

[0019] Figure 4 It is a schematic diagram of the separation of the radiator and the motor of the present invention.

[0020] In the figure: 1- radiator; 2- motor; 3- power module; 4- driver air duct; 5- air outlet plate; 101- radiator body; 102- heat dissipation ribs; 103- power module mounting seat; 104- heat pipe. DETAILED DESCRIPTION

[0021] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings.

[0022] like Figure 1-4 As shown, a heat pipe radiator for a driver integrated with a motor, the radiator 1 is arranged in the driver air duct 4 at the tail of the motor 2, the air outlet of the driver air duct 4 is provided with an air outlet plate 5 with air outlet holes, the radiator 1 includes a radiator body 101, the radiator body 101 is hollow and has an open upper end, the outer periphery of the radiator body 101 is surrounded by heat dissipation ribs 102, the bottom of the inner cavity of the radiator body 101 is provided with a power module mounting seat 103 whose top surface can be fitted with the driver power module 3, the radiator body 101 is provided with 6 parallelly arranged heat pipes 104, the heat pipes 104 include two side vertical pipe parts connected and fixed to the inner side wall of the radiator body 101 and a bottom pipe part connected and fixed to the bottom of the radiator body 101, the bottom pipe part of each heat pipe 104 passes through the power module mounting seat 103, and the heat pipe 104 is provided with a cooling medium.

[0023] In order to arrange more heat pipes 104, the bottom pipe portion of each heat pipe 104 is perpendicular to the length direction of the power module mounting base 103. More heat pipes 104 can be arranged, and the heat transfer efficiency is high.

[0024] In order to achieve better heat conduction, the bottom pipe portion of each heat pipe 104 passes through the upper end of the power module mounting seat 103 and is flattened to be flush with the mounting top surface of the power module mounting seat 103. It can better fit with the bottom of the power module 3 and has higher heat transfer efficiency.

[0025] In order to evenly conduct the heat to the side wall of the heat sink body 101 , the bottom pipes of the heat pipes 104 are arranged at equal intervals, so that the heat at the bottom of the power module 3 can be completely taken away and evenly conducted to the side wall of the heat sink body 101 .

[0026] In order to form a cooling loop, the inner diameter of the heat pipe 104 complies with the principle of capillary force, and the cooling medium uses a cooling medium that generates a liquid-vapor change when absorbing heat and a vapor-liquid change after releasing heat. When the driver is working, the power module 3 generates a large amount of heat, and the liquid cooling medium inside the heat pipe 104 quickly vaporizes and flows to the cold end of the heat pipe 104 under the action of capillary force. The air forced to flow around the heat dissipation ribs 102 will quickly take away the heat, and the gaseous medium inside the heat pipe 104 will liquefy and flow back to the hot end of the heat pipe 104, forming a cooling loop.

[0027] In order to facilitate the positioning and installation of the heat pipe 104, a vertical arc groove is provided on the inner wall of the radiator body 101, and both sides of the heat pipe 104 are embedded in the arc groove, so that the heat pipe 104 can be conveniently positioned and installed on the inner wall of the radiator body 101.

[0028] In order to allow the cooling wind to quickly and easily take away the heat, the heat dissipation ribs 102 are all axially oriented, extending from the outer side of the radiator body 101 to the bottom back of the radiator body 101, and arranged radially on the bottom back. The cooling wind from the fan of the motor 2 blows toward the bottom back of the radiator body 101, and through the guiding effect of the radial heat dissipation ribs 102, it can be evenly distributed to the side of the radiator body 101 for cooling and heat dissipation, which can quickly and easily take away the heat.

[0029] In order to improve the strength and heat dissipation effect, circumferential reinforcement ribs are provided between adjacent heat dissipation ribs 102. The addition of circumferential reinforcement ribs between adjacent heat dissipation ribs effectively improves the structural strength while increasing the heat dissipation area and improving the cooling efficiency. When the height of the reinforcement ribs is low, it can avoid blocking the cooling air and reducing the cooling efficiency.

[0030] In order to reduce weight and obtain better thermal conductivity, the heat sink 1 is made of aluminum, which is light in weight and has good thermal conductivity.

[0031] In order to achieve full contact heat conduction between the power module 3 and the power module mounting seat 103, thermal grease is provided between the power module 3 and the mounting top surface of the power module mounting seat 103. The full contact between the two leads to a better heat conduction effect.

[0032] In this example, the heat pipe 104 is fixed to the bottom and side surfaces of the heat sink body 101 by welding, so that the connection is firm and reliable.

[0033] During operation, the cooling air of the motor 2 fan is blown to the driver air duct 4 at the tail of the motor 2 through the motor 2, and the heat of the power module 3 is conducted to the side wall of the radiator body 101 and the heat dissipation ribs 102 through the power module mounting seat 103 and the heat pipe 104. The cooling air blows through the heat dissipation ribs 102, takes away the heat of the heat dissipation ribs 102 and the side wall of the radiator body 101, and is discharged through the air outlet plate 5, thereby successfully solving the problem of high heat flux density of the driver. The radiator 1 has a simple overall structure, and the driver heat dissipation is achieved only through a set of active cooling devices such as the motor 2 cooling fan. There is no need to increase the radial dimension, and only the axial length dimension of the motor 2 is increased, which effectively reduces the volume and weight, has high reliability, reduces costs, and realizes a lightweight structure. It can be conveniently integrated with the motor 2, and can be effectively applied to certain specific application scenarios with strict requirements on radial dimensions.

[0034] above Figure 1-4 The heat pipe radiator for a driver integrated with a motor shown is a specific embodiment of the present invention, which has embodied the outstanding substantial features and significant progress of the present invention. According to actual use needs and under the guidance of the present invention, equivalent modifications in shape, structure, etc. can be made to it, which are all within the protection scope of this scheme.

Claims

1. A heat pipe radiator for a driver integrated with a motor, characterized in that: The radiator (1) is arranged in a driver air duct (4) at the rear of the motor (2), and the air outlet of the driver air duct (4) is provided with an air outlet plate (5) with air outlet holes. The radiator (1) comprises a radiator body (101), and the radiator body (101) is hollow and has an open top. The radiator body (101) is surrounded by heat dissipation ribs (102). The bottom of the inner cavity of the radiator body (101) is provided with a power module mounting seat (103) whose top surface can be fitted with the driver power module (3). The radiator body (101) is provided with a plurality of heat pipes (104) arranged in parallel. The heat pipes (104) comprise two side vertical pipe portions connected and fixed to the inner side wall of the radiator body (101) and a bottom pipe portion matched with the bottom of the radiator body (101). The bottom pipe portion of the heat pipe (104) passes through or is fitted against the power module mounting seat (103). A cooling medium is provided in the heat pipe (104). The heat dissipation ribs (102) are all axially oriented, and the heat dissipation ribs (102) extend from the outer side surface of the heat sink body (101) to the bottom back surface of the heat sink body (101), and are arranged in a radial pattern on the bottom back surface; The cooling wind from the motor fan is blown toward the bottom back of the radiator body (101), and is evenly distributed to the side of the radiator body (101) for cooling and heat dissipation through the guiding effect of the radial heat dissipation ribs (102).

2. The heat pipe radiator for a driver integrated with a motor according to claim 1, characterized in that: The bottom pipe portion of each heat pipe (104) is perpendicular to the length direction of the power module mounting seat (103).

3. The heat pipe radiator for a driver integrated with a motor according to claim 2, characterized in that: The bottom pipe portion of each heat pipe (104) passes through the upper end of the power module mounting seat (103) and is flattened to be flush with the mounting top surface of the power module mounting seat (103).

4. The heat pipe radiator for a driver integrated with a motor according to claim 3, characterized in that: The bottom tube portions of the heat pipes (104) are arranged at equal intervals.

5. The heat pipe radiator for a driver integrated with a motor according to claim 4, characterized in that: The cooling medium is a cooling medium that generates a liquid-vapor change when absorbing heat and a vapor-liquid change after releasing heat.

6. The heat pipe radiator for a driver integrated with a motor according to claim 1, characterized in that: The inner wall of the radiator body (101) is provided with a vertical arc groove, and two sides of the heat pipe (104) are embedded in the arc groove.

7. The heat pipe radiator for a driver integrated with a motor according to claim 1, characterized in that: Circumferential reinforcing ribs are provided between adjacent heat dissipation ribs (102).

8. The heat pipe radiator for a driver integrated with a motor according to claim 1, characterized in that: The radiator (1) is made of aluminum.

9. The heat pipe radiator for a driver integrated with a motor according to claim 1, characterized in that: Thermal grease is provided between the power module (3) and the mounting top surface of the power module mounting seat (103); and the heat pipe (104) is fixed to the bottom surface and side surfaces of the heat sink body (101) by welding.

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