Liquid cooling wire holder, electric drive assembly and vehicle

Abstract

The invention provides a liquid cooling wire holder, an electric drive assembly and a vehicle, the liquid cooling wire holder comprises a wiring shell and a binding post, the wiring shell is provided with a liquid cooling flow channel, the wiring shell is provided with a heat conduction column in the liquid cooling flow channel, and the heat conduction column is internally provided with a mounting hole penetrating through the wiring shell; the binding post is positioned in the mounting hole, and two ends of the binding post are respectively provided with a first terminal and a second terminal; the liquid cooling flow channel is located on the periphery of the heat conduction column, the wiring shell is provided with a flow channel inlet and a flow channel outlet at the two ends of the liquid cooling flow channel respectively, the liquid cooling flow channel is isolated from the installation hole, and the liquid cooling flow channel is arranged in a relatively closed mode. Efficient heat conduction and heat dissipation are carried out through cooling liquid circulating in the liquid cooling flow channel, then the temperature of the wiring shell and the temperature of the binding post are efficiently reduced, the wiring shell can be communicated with cooling flow channels of other equipment through arrangement of the flow channel inlets and the flow channel outlets, and then an additional heat dissipation system does not need to be added; and the cooling arrangement of the liquid cooling wire holder can be simplified.

Description

Technical Field

[0001] The present invention relates to the field of new energy equipment, and in particular to a liquid-cooled terminal block, an electric drive assembly and a vehicle. Background Art

[0002] The motor controller and the motor in the electric drive assembly are connected to each other through a terminal block to transmit electrical energy. When transmitting large currents, the position of the terminal generates high heat due to the contact resistance power consumption of the contact or poor crimping. If the terminal block exceeds the specified operating temperature limit, the safety characteristics will be reduced due to heat or even fail and damage. Therefore, improving the heat dissipation capacity of the terminal block has a certain effect on improving the safety of the connection position.

[0003] Most of the terminal block products in the prior art adopt natural cooling. When the drive assembly is working, the temperature at the connection position is high. Therefore, the existing products can only reduce the temperature through passive heat dissipation. The heat dissipation efficiency is low and it is difficult to adapt to the development trend of higher and higher power products. Summary of the invention

[0004] The first object of the present invention is to provide a liquid-cooled wiring socket that improves the heat dissipation efficiency of the wiring position.

[0005] A second object of the present invention is to provide an electric drive assembly having the above-mentioned liquid-cooled terminal block.

[0006] A third object of the present invention is to provide a vehicle having the above-mentioned liquid-cooled terminal block.

[0007] In order to achieve the first purpose of the present invention, the present invention provides a liquid-cooled terminal block, including a terminal shell and a terminal post, the terminal shell is provided with a liquid-cooling flow channel, the terminal shell is provided with a heat-conducting column in the liquid-cooling flow channel, a mounting hole is provided in the heat-conducting column and penetrates the terminal shell, the terminal post is located in the mounting hole and is respectively provided with a first terminal terminal and a second terminal at both ends; the liquid-cooling flow channel is located at the outer periphery of the heat-conducting column, the terminal shell is respectively provided with a flow channel inlet and a flow channel outlet at both ends of the flow channel of the liquid-cooling flow channel, the liquid-cooling flow channel is isolated from the mounting hole, and the liquid-cooling flow channel is relatively closed.

[0008] It can be seen from the above scheme that the terminal post can be used to connect the device through two terminal terminals. The liquid cooling channel is located on the periphery of the heat-conducting column and the mounting hole. When the device is operating, the terminal post will generate a large amount of waste heat. Therefore, the coolant flowing in the liquid cooling channel can be used for efficient heat conduction and heat dissipation, thereby effectively reducing the temperature of the terminal housing and the terminal post. By utilizing the arrangement of the channel inlet and the channel outlet, the terminal housing can be connected to the cooling channel of other equipment, thereby eliminating the need to add an additional heat dissipation system, which is conducive to the cooling arrangement of the simple liquid-cooled terminal block.

[0009] A further solution is that the terminal post and the mounting hole extend along the Z direction, the flow channel inlet and the flow channel outlet are respectively located at the two ends of the terminal housing in the X direction, the liquid cooling flow channel extends along the X direction and is connected with branch channels on both sides in the Y direction, and the branch channels on each side are located on the outer side of the heat conductive column based on the Y direction.

[0010] As can be seen from the above, the terminal extends along the Z direction, and the flow channel inlet and the flow channel outlet are located at both ends of the X direction, and through the branch channel on both sides of the Y direction, the coolant can flow in one direction and can fully contact with the heat conductive column, thereby further improving the heat conduction and heat dissipation efficiency.

[0011] A further solution is that heat-conducting side walls are arranged on both sides of the heat-conducting column in the Y direction, and a plurality of heat-conducting rods are arranged on the heat-conducting side walls along the Y direction.

[0012] It can be seen from the above that by providing a plurality of heat-conducting rods on the heat-conducting side wall, the contact area with the coolant can be increased, thereby further improving the heat conduction and heat dissipation efficiency.

[0013] A further solution is that the liquid cooling channel is provided with openings on both sides of the Y direction, and a cover is provided to seal each opening.

[0014] As can be seen from the above, the structural arrangement of the openings can facilitate the production and molding of the wiring housing and the wiring posts, and the sealing cover provided with a sealing arrangement can improve the sealing of the wiring seat and reduce the number of steps during assembly.

[0015] A further solution is that the liquid cooling terminal block includes a plurality of terminal posts, a plurality of mounting holes are arranged in the heat conductive posts, the plurality of mounting holes are arranged in parallel along the X direction, and one terminal post is arranged in one mounting hole.

[0016] A further solution is that the terminal post, the heat-conducting post and the terminal housing are integrally injection molded.

[0017] It can be seen from the above that the arrangement of multiple terminals can improve the adaptability of the liquid-cooled terminal block to different devices, and the use of an integrated injection molding process not only facilitates the assembly of the terminals and the molding of the terminal block, but also helps to make the terminals and the hole walls of the mounting holes more closely contact and fit, thereby further improving the thermal conductivity and heat dissipation efficiency.

[0018] A further solution is that the outer walls of the wiring housing at both ends in the X direction are respectively provided with a first connecting plate and a second connecting plate extending along the X direction, the flow channel inlet is located on the first connecting plate, the flow channel outlet is located on the second connecting plate, and the flow channel inlet and the flow channel outlet are both arranged downward along the Z direction.

[0019] As can be seen from the above, the two connecting plates can facilitate the fixed connection between the wiring housing and the device, and also facilitate the connection between the flow channel inlet and the flow channel outlet.

[0020] A further solution is that the outer walls of the wiring housing at both ends in the X direction are respectively provided with a first arcuate positioning wall and a second arcuate positioning wall extending along the Z direction, the first arcuate positioning wall is located below the flow channel inlet in the Z direction, and the second arcuate positioning wall is located below the flow channel outlet in the Z direction.

[0021] As can be seen from the above, the provision of the two arc-shaped positioning walls not only facilitates the assembly and positioning of the wiring housing, but also makes the plug-in connection between the flow channel inlet and the flow channel outlet in the Z direction more precise.

[0022] In order to achieve the second purpose of the present invention, the present invention provides an electric drive assembly, including a motor and a liquid cooling terminal block as described above, the motor including a motor housing, a stator and a rotor, the stator and the rotor are arranged in the motor housing, the motor housing is provided with a cooling channel, the liquid cooling terminal block is connected to the motor housing, and the liquid cooling channel is connected to the cooling channel.

[0023] A further solution is that the motor housing includes a rear end cover, the rear end cover is provided with a connecting seat, the connecting seat is provided with a wiring groove, the connecting seat is provided with a connecting wall above the wiring groove in the Z direction, the connecting wall is penetrated by a first mounting port, and the first mounting port is connected to the wiring groove; a cooling flow channel is provided on the rear end cover, and the cooling flow channel is provided with an input port and an output port on the connecting wall, and the input port and the output port are respectively located on both sides of the first mounting port based on the X direction; the wiring housing is installed at the first mounting port and is fixedly connected to the rear end cover, the first wiring terminal is located in the wiring groove, the input port is connected to the flow channel inlet, and the output port is connected to the flow channel outlet.

[0024] As can be seen from the above, by arranging the cooling channel, the input port and the output port on the rear end cover, and then installing the liquid cooling terminal block to the installation port, it is not only convenient for wiring the motor, but also enables the cooling channel to be connected with the liquid cooling channel, and then the motor and the liquid cooling terminal block are integrated for liquid cooling and heat dissipation, thereby further improving the thermal conductivity and heat dissipation efficiency.

[0025] A further solution is that a first arc-shaped matching wall and a second arc-shaped matching wall are respectively provided on both sides of the first installation port in the X direction, the first arc-shaped matching wall and the second arc-shaped matching wall are provided to protrude inwardly, the first arc-shaped matching wall is located at the outer periphery of the input port, and the second arc-shaped matching wall is located at the outer periphery of the output port.

[0026] As can be seen from the above, the arc-shaped matching wall not only facilitates the assembly and positioning of the wiring housing, but also makes the connection between the input port and the output port in the Z direction more precise.

[0027] A further solution is that the electric drive assembly includes a motor controller, the motor controller includes a controller housing, a second mounting opening is provided through the controller housing, a wiring housing is installed at the second mounting opening, and the second wiring terminal is located in the controller housing.

[0028] As can be seen from the above, the second installation opening of the motor controller also makes it convenient to install the wiring housing into the controller housing, which in turn also facilitates the wiring of the second wiring terminal.

[0029] In order to achieve the third objective of the present invention, the present invention provides a vehicle, comprising the liquid-cooled terminal block according to the above solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural diagram of an embodiment of an electric drive assembly of the present invention.

[0031] Figure 2 It is an exploded view of an embodiment of the electric drive assembly of the present invention.

[0032] Figure 3 It is a structural diagram of the rear end cover and liquid cooling terminal block in the electric drive assembly embodiment of the present invention.

[0033] Figure 4 1 is a structural diagram of the rear end cover in an embodiment of the electric drive assembly of the present invention.

[0034] Figure 5 It is a structural diagram of an embodiment of a liquid-cooled terminal block of the present invention.

[0035] Figure 6 It is an exploded view of an embodiment of a liquid-cooled terminal block of the present invention.

[0036] Figure 7 It is an exploded view of the liquid-cooled wiring socket embodiment of the present invention from another perspective.

[0037] Figure 8 It is a cross-sectional view of an embodiment of a liquid-cooled terminal block of the present invention along the Y direction.

[0038] Fig. 9 It is a cross-sectional view of an embodiment of the electric drive assembly of the present invention along the X direction.

[0039] The present invention is further described below in conjunction with the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0040] Embodiment of electric drive assembly and liquid cooling terminal block: Reference Figures 1 to 9The electric drive assembly includes a motor, a liquid cooling terminal block 1 and a motor controller 3. The motor 2 includes a motor housing, a stator and a rotor. The stator and the rotor are arranged in the motor housing. The motor housing includes a rear end cover 21 and an annular housing 22. The rear end cover 21 and the annular housing 22 are both provided with cooling channels. The cooling channels of the rear end cover 21 are communicated with the cooling channels of the annular housing 22. A connecting seat 211 is provided radially above the rear end cover 21. The connecting seat 211 is provided with a wiring groove 212. The connecting seat 211 is provided with a connecting wall 210 above the wiring groove 212 in the Z direction. The connecting wall 210 is penetrated by a first mounting opening 213. The first mounting opening 213 is arranged in a rectangular shape. The first mounting opening 213 is connected to the wiring groove 2 12 is connected, and the cooling channel extends to the connecting wall 210. The cooling channel is provided with an input port 214 and an output port 215 on the connecting wall 210. The input port 214 and the output port 215 are respectively located on both sides of the first mounting port 213 based on the X direction. The first mounting port 213 is respectively provided with a first arc-shaped matching wall 216 and a second arc-shaped matching wall 217 on both sides of the X direction. The first arc-shaped matching wall 216 and the second arc-shaped matching wall 217 are convexly arranged inwardly. The first arc-shaped matching wall 216 is located at the periphery of the input port 214, and the second arc-shaped matching wall 217 is located at the periphery of the output port 215. The generatrix of the first arc-shaped matching wall 216 and the generatrix of the second arc-shaped matching wall 217 are both parallel to the Z direction.

[0041] The liquid-cooled terminal block 1 comprises a terminal housing 11, two covers 14 and three terminal posts 13. The terminal housing 11 is provided with a liquid-cooling channel 15. The terminal housing 11 is provided with a heat-conducting column 112 in the liquid-cooling channel 15. The heat-conducting column 112 is arranged in a rectangular shape. The heat-conducting column 112 is provided with end faces 1122 on both sides of the X direction, and the heat-conducting column 112 is provided with heat-conducting side walls 1121 on both sides of the Y direction. Three mounting holes 133 are provided in the heat-conducting column 112 so as to penetrate the terminal housing 11. The terminal housing 11 is provided with a top wall 1113 and a bottom wall 1114 at the upper and lower ends in the Z direction, respectively. The mounting hole 133 passes through the top wall 1113 and the bottom wall 1114, and the mounting hole 133 extends along the Z direction. Multiple mounting holes 133 are arranged in parallel along the X direction. The terminal post 13 extends along the Z direction. The terminal post 13 can be an aluminum column, a copper column or a column made of other high conductivity materials. One terminal post 13 is set in one mounting hole 133. The terminal post 13 is respectively provided with a first terminal 131 and a second terminal 132 at both ends of the Z direction. The terminal post 13, the heat-conducting column 112 and the wiring housing 11 are integrally injection molded, so that the surrounding wall of the heat-conducting column 112 is closely adjacent to the inner wall of the mounting hole 133.

[0042] The liquid cooling channel 15 is located at the periphery of the heat conductive column 112, and the liquid cooling channel 15 is isolated from each mounting hole 133. The wiring housing 11 is provided with a channel inlet 1171 and a channel outlet 1172 at both ends of the channel of the liquid cooling channel 15, respectively. The channel inlet 1171 and the channel outlet 1172 are respectively located at both ends of the X direction of the wiring housing 11. The liquid cooling channel 15 extends along the X direction and is provided with end grooves 152 at both ends of the X direction, respectively. The end groove 152 is located between the channel inlet 1171 and the end face 1122, and the other end groove 152 is located between the channel outlet 1172 and the other end face 1122.

[0043] The liquid-cooling channel 15 is connected with branch channels 151 on both sides in the Y direction. The branch channels 151 on each side are located on the outer side of the heat-conducting side wall 1121 of the heat-conducting column 112 based on the Y direction. The end groove 152 on one side is connected between the branch channels 151 on both sides, and the end groove 152 on the other side is also connected between the branch channels 151 on both sides. The end grooves 152 on both sides and the branch channels 151 on both sides surround the heat-conducting column 112.

[0044] A plurality of heat-conducting rods 113 are arranged on the heat-conducting side wall 1121 along the Y direction, and the plurality of heat-conducting rods 113 are arranged in a staggered manner. The liquid-cooling channel 15 is provided with openings on both sides of the Y direction, and the openings can facilitate the molding of the wiring housing 11, and a cover 14 is sealed on each side of the opening. The sealing method of the cover 14 can be pressing, hot melting, ultrasonic, etc., so that the liquid-cooling channel 15 is relatively closed.

[0045] The wiring housing 11 is provided with an outer wall 1111 and an outer wall 1112 at both ends in the X direction, the outer wall 1111 is provided with a first connecting plate 1141 extending along the X direction, the outer wall 1112 is provided with a second connecting plate 1142 extending along the X direction, the flow channel inlet 1171 is located on the first connecting plate 1141, the flow channel outlet 1172 is located on the second connecting plate 1142, and the flow channel inlet 1171 and the flow channel outlet 1172 are both arranged downward along the Z direction. The outer walls of the wiring housing 11 at both ends in the X direction are respectively provided with a first arc-shaped positioning wall 1161 and a second arc-shaped positioning wall 1162 extending along the Z direction. The first arc-shaped positioning wall 1161 and the second arc-shaped positioning wall 1162 are both concavely arranged. The first arc-shaped positioning wall 1161 is located below the flow channel inlet 1171 in the Z direction, and the second arc-shaped positioning wall 1162 is located below the flow channel outlet 1172 in the Z direction. The generatrix of the first arc-shaped positioning wall 1161 is parallel to the Z direction, and the generatrix of the second arc-shaped positioning wall 1162 is parallel to the Z direction. Of course, in the present embodiment, the X direction, the Y direction and the Z direction are perpendicular to each other.

[0046] The wiring housing 11 is installed at the first installation port 213, and part of the wiring housing 11 extends into the wiring groove 212. The first connecting plate 1141 and the second connecting plate 1142 are adjacent to the connecting wall 210. The first connecting plate 1141 and the second connecting plate 1142 are respectively provided with through holes 115. The wiring housing 11 and the rear end cover 21 can be fixedly connected by screws passing through the through holes 115 and the screw holes of the connecting wall 210. The input port 214 is connected to the flow channel inlet 1171, the output port 215 is connected to the flow channel outlet 1172, and the liquid cooling channel 15 is connected to the cooling channel.

[0047] When connecting the interface, the first arc-shaped positioning wall 1161 is loosely matched with the first arc-shaped matching wall 216, the second arc-shaped positioning wall 1162 is loosely matched with the second arc-shaped matching wall 217, and the wiring housing 11 covers the first mounting port 213, the first wiring terminal 131 is located in the wiring groove 212, and the first wiring terminal 131 has a connecting hole extending along the Y direction, and the connecting terminals 23 of the three-phase cables of the stator are correspondingly connected to the first wiring terminals 131 respectively.

[0048] The motor controller 3 includes a controller housing 31, which forms a device cavity. The device cavity is used to install an electronic control module. A second installation port 311 is provided through the controller housing 31. The second installation port 311 is connected to the device cavity. The second installation port is mounted on the outside of the wiring housing 11. The wiring housing 11 is located at the second installation port 311. Part of the wiring housing 11 extends into the device cavity. The second terminal 132 is located in the controller housing 31. The connecting hole of the second terminal 132 extends along the Z direction. The three-phase output cable or three-phase output copper bus corresponding to the electronic control module is correspondingly connected to the second terminal 132.

[0049] Transport Example: The vehicle includes an electric drive assembly and a liquid cooling terminal block as described above. The electric drive assembly may be integrated with a transmission or may not be integrated with a transmission. The vehicle may be a new energy electric car, a new energy electric bus, a new energy electric truck, a new energy electric cleaning vehicle, a new energy electric rail vehicle, a new energy electric flying vehicle, a new energy electric shipping vehicle, etc.

[0050] Of course, the above embodiments are only preferred embodiments of the present case, and there may be more variations in practical applications. For example, in addition to being suitable for the connection between electronic control and motor, the liquid cooling terminal block can also be used for the connection between devices such as power supply, charger, motor, electronic control, etc. The purpose of the invention to improve the thermal conductivity efficiency can be achieved through the design of the liquid cooling channel. In addition, the position arrangement of the inlet and outlet can be arranged according to the actual situation of the product, such as being arranged on the same side or on different sides in different directions, and the liquid cooling channel can be arranged in a semi-enclosed or semi-contact manner in addition to the fully surrounded cooling arrangement, that is, the liquid cooling channel is arranged on one side, and as long as the liquid cooling channel passes through the heat-conducting column, the coolant can achieve efficient heat conduction as long as it contacts the heat-conducting column. As for the number of terminals, it can also be set according to actual needs, and it can be arranged with a single terminal or multiple terminals.

[0051] As can be seen from the above, in this case, the liquid cooling channel is located on the periphery of the heat conductive column and the mounting hole. When the equipment is operating, the terminal will generate a large amount of waste heat. Therefore, the coolant flowing in the liquid cooling channel can be used for efficient heat conduction and heat dissipation, thereby effectively reducing the temperature of the terminal housing and the terminal. In addition, by utilizing the arrangement of the channel inlet and the channel outlet, the terminal housing can be connected to the cooling channel of other equipment, thereby eliminating the need to add an additional heat dissipation system, which is conducive to the cooling arrangement of the simple liquid-cooled terminal block.

Claims

1. A liquid-cooled terminal block, comprising a terminal housing and a terminal post, characterized in that: The wiring housing is provided with a liquid cooling channel, a heat conducting column is provided in the liquid cooling channel, a mounting hole is provided in the heat conducting column and penetrates the wiring housing, the wiring column is located in the mounting hole and has a first terminal and a second terminal respectively provided at both ends; The liquid cooling channel is located at the periphery of the heat conducting column, the wiring housing is provided with a channel inlet and a channel outlet at both ends of the channel, the liquid cooling channel is isolated from the mounting hole, and the liquid cooling channel is relatively closed.

2. The liquid-cooled terminal block according to claim 1, characterized in that: The terminal post and the mounting hole extend along the Z direction, the flow channel inlet and the flow channel outlet are respectively located at the two ends of the terminal housing in the X direction, the liquid cooling flow channel extends along the X direction and is connected with a branch channel on both sides in the Y direction, and the branch channel on each side is located on the outer side of the heat conductive column based on the Y direction.

3. The liquid-cooled terminal block according to claim 2, characterized in that: The heat-conducting column is provided with heat-conducting side walls on both sides of the Y direction, and a plurality of heat-conducting rods are provided on the heat-conducting side walls along the Y direction.

4. The liquid-cooled terminal block according to claim 2, characterized in that: The liquid cooling channel is provided with openings on both sides of the Y direction, and a cover is provided to seal the opening on each side.

5. The liquid-cooled terminal block according to claim 1, characterized in that: The liquid cooling terminal block includes a plurality of terminal posts, a plurality of mounting holes are arranged in the heat conductive posts, the plurality of mounting holes are arranged in parallel along the X direction, and one terminal post is arranged in one mounting hole.

6. The liquid-cooled terminal block according to claim 1, characterized in that: The terminal post, the heat-conducting post and the terminal housing are integrally injection-molded.

7. The liquid-cooled terminal block according to any one of claims 1 to 6, characterized in that: The outer walls of the wiring housing at both ends in the X direction are respectively provided with a first connecting plate and a second connecting plate extending along the X direction, the flow channel inlet is located on the first connecting plate, the flow channel outlet is located on the second connecting plate, and the flow channel inlet and the flow channel outlet are both arranged downward along the Z direction.

8. The liquid-cooled terminal block according to claim 7, characterized in that: The outer walls of the wiring housing at both ends in the X direction are respectively provided with a first arc-shaped positioning wall and a second arc-shaped positioning wall extending along the Z direction. The first arc-shaped positioning wall is located below the flow channel inlet in the Z direction, and the second arc-shaped positioning wall is located below the flow channel outlet in the Z direction.

9. The electric drive assembly is characterized in that: It comprises a motor and a liquid-cooling terminal block as described in any one of claims 1 to 8 above, wherein the motor comprises a motor housing, a stator and a rotor, wherein the stator and the rotor are arranged in the motor housing, the motor housing is provided with a cooling channel, the liquid-cooling terminal block is connected to the motor housing, and the liquid-cooling channel is connected to the cooling channel.

10. The electric drive assembly according to claim 9, characterized in that: The motor housing comprises a rear end cover, the rear end cover is provided with a connection seat, the connection seat is provided with a wiring slot, the connection seat is provided with a connection wall above the wiring slot in the Z direction, the connection wall is penetrated by a first installation port, and the first installation port is communicated with the wiring slot; The cooling channel is arranged on the rear end cover, and the cooling channel is provided with an input port and an output port on the connecting wall, and the input port and the output port are respectively located on both sides of the first mounting port based on the X direction; The wiring housing is installed at the first installation port and fixedly connected to the rear end cover, the first wiring terminal is located in the wiring slot, the input port is connected to the flow channel inlet, and the output port is connected to the flow channel outlet.

11. The electric drive assembly according to claim 10, characterized in that: The first installation port is provided with a first arc-shaped matching wall and a second arc-shaped matching wall on both sides of the X direction, respectively. The first arc-shaped matching wall and the second arc-shaped matching wall are provided to protrude inwardly. The first arc-shaped matching wall is located at the outer periphery of the input port, and the second arc-shaped matching wall is located at the outer periphery of the output port.

12. The electric drive assembly according to claim 10, characterized in that: The electric drive assembly includes a motor controller, and the motor controller includes a controller housing. The controller housing is penetrated by a second mounting opening, the wiring housing is installed at the second mounting opening, and the second wiring terminal is located in the controller housing.

13. A means of transport, characterized in that It comprises a liquid-cooled terminal block as claimed in any one of claims 1 to 8.

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