Motor Controllers, Electric Powertrain and Vehicles

Abstract

The present invention discloses a motor controller, an electric assembly and a vehicle, wherein the motor controller comprises: a control box, wherein a cooling space is provided in the control box; a water channel cover plate, wherein the water channel cover plate is installed in the control box and is located in the cooling space, wherein the water channel cover plate divides the cooling space into a first cooling water channel and a second cooling water channel, wherein the first cooling water channel and the second cooling water channel are connected and are respectively located on opposite sides of the water channel cover plate; and a power module, wherein the power module is installed in the control box and extends into the first cooling water channel. The motor controller according to the embodiment of the present invention is not only constructed with a double-layer cooling water channel, but also has the advantages of simple process, low processing cost, and not easy to leak.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a motor controller, an electric assembly and a vehicle. Background Art

[0002] The vehicle in the related art is usually provided with a motor controller, which includes a power module and a cooling water channel. The cooling water channel dissipates heat for the power module. The cooling water channel is generally a single-layer water channel, and the coolant flows in from one end of the cooling water channel and flows out from the other end. In this way, the length of the cooling water channel is relatively large, and it is not convenient to realize the circulation of the coolant of the whole vehicle. Some motor controllers set the cooling water channel as a double-layer water channel, one layer of the double-layer water channel is used to dissipate heat for the power module and the other side is used for the outflow and circulation of the coolant. In this way, the overall length of the cooling water channel is shortened and the circulation of the coolant of the whole vehicle is convenient. However, since the cooling water channel is generally formed by welding (for example, friction welding), the cooling water channel is constructed as a double-layer water channel, which is complicated in process, high in processing cost, and has a greater risk of water leakage. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a motor controller which is not only constructed with a double-layer cooling water channel, but also has the advantages of simple process, low processing cost, and low water leakage.

[0004] The present invention also provides an electric assembly having the motor controller.

[0005] The present invention also provides a vehicle having the electric assembly.

[0006] In order to achieve the above-mentioned purpose, a motor controller is proposed according to a first aspect of an embodiment of the present invention, and the motor controller includes: a control box, a cooling space is provided in the control box; a water channel cover plate, the water channel cover plate is installed in the control box and is located in the cooling space, the water channel cover plate divides the cooling space into a first cooling water channel and a second cooling water channel, the first cooling water channel and the second cooling water channel are connected and are respectively located on opposite sides of the water channel cover plate; a power module, the power module is installed in the control box and extends into the first cooling water channel.

[0007] The motor controller according to the embodiment of the present invention is not only constructed with a double-layer cooling water channel, but also has the advantages of simple process, low processing cost, and low water leakage.

[0008] According to some specific embodiments of the present invention, the first cooling water channel is defined by the side wall of the cooling space and the water channel cover plate, and an opening is provided on the side of the first cooling water channel facing away from the water channel cover plate, and the power module extends into the first cooling water channel through the opening.

[0009] According to some specific embodiments of the present invention, a sealing ring is provided between the control box and the power module, and the sealing ring is arranged around the first cooling water channel; a sealing groove is provided on the inner wall of the control box facing the power module, and the sealing groove is arranged around the first cooling water channel, and the sealing ring is installed in the sealing groove.

[0010] According to some specific embodiments of the present invention, the second cooling water channel is defined by the bottom wall and side walls of the cooling space and the water channel cover plate; a diversion rib is provided in the second cooling water channel, and the diversion rib extends along the length direction of the second cooling water channel, and the diversion rib divides the second cooling water channel into at least two diversion water channels.

[0011] According to some specific embodiments of the present invention, the first cooling water channel includes a water inlet section, a water storage section and a cooling section, the bottom wall of the cooling section is higher than the bottom wall of the water inlet section, the water storage section is connected between the water inlet section and the cooling section, the bottom wall of the water storage section extends upwardly obliquely from the water inlet section to the cooling section, and the power module extends into the cooling section.

[0012] According to some specific embodiments of the present invention, the motor controller further includes: a water inlet pipe, which is connected to the control box and communicates with the first cooling water channel.

[0013] According to some specific embodiments of the present invention, the motor controller also includes: a temperature sensor, which is used to detect the temperature of the coolant in the cooling space; the first cooling water channel and the second cooling water channel are connected through a turning section, and the turning section is jointly defined by the edge of the water channel cover plate and the side wall of the cooling water channel.

[0014] According to some specific embodiments of the present invention, the cooling space has a cooling trough, which is located on the side of the turning section away from the water channel cover plate, and the cooling trough is recessed from the side wall of the cooling space toward a direction away from the water channel cover plate, and the temperature sensor is used to detect the temperature of the coolant in the cooling trough.

[0015] According to some specific embodiments of the present invention, the control box includes: a box body, the cooling space is arranged in the box body; a cover body, the cover body is installed on the box body, and a reinforcing rib is provided on a side of the cover body facing away from the box body; the cover body is provided with a plurality of mounting holes distributed at intervals along its circumference, the plurality of mounting holes are arranged adjacent to the outer peripheral edge of the cover body, and the cover body is installed on the box body by means of a plurality of fasteners respectively matched with the plurality of mounting holes; the reinforcing ribs are a plurality of ribs arranged at intervals along the circumference of the cover body, and each of the reinforcing ribs extends from the geometric center of the cover body to the outer peripheral edge of the cover body.

[0016] According to some specific embodiments of the present invention, the cover body includes: a first layer and a second layer; a damping layer, wherein the damping layer is located between the first layer and the second layer, the first layer, the damping layer and the second layer are stacked, and the elasticity of the damping layer is greater than the elasticity of the first layer and the elasticity of the second layer.

[0017] According to some specific embodiments of the present invention, the motor controller also includes: a control board and a drive board, the drive board and the control board are integrally formed into a drive control board and installed in the control box; a capacitor, the capacitor is installed in the control box, the drive control board is integrated with a detection copper bus, the detection copper bus is connected to the capacitor, and the drive control board detects parameters of the capacitor through the detection copper bus.

[0018] According to some specific embodiments of the present invention, the motor controller also includes: a signal plug board, the control box has a shielding cavity, and the signal plug board is located in the shielding cavity; a capacitor, the control box is provided with a capacitor cavity, and the capacitor is installed in the capacitor cavity; a capacitor shielding plate, the capacitor shielding plate is installed in the control box and covers the capacitor cavity.

[0019] According to a second aspect of the present invention, an electric assembly is provided, comprising: a motor controller according to the first aspect of the present invention; a motor, the motor having a motor cooling water channel, the motor cooling water channel being connected to the second cooling water channel; and a gearbox, the gearbox being mounted on the motor.

[0020] The electric assembly according to the second aspect of the present invention, by utilizing the motor controller according to the first aspect of the present invention, has the advantages of simple process, low processing cost, no water leakage, and easy circulation of coolant.

[0021] According to a third aspect of the present invention, a vehicle is provided, comprising the electric assembly according to the second aspect of the present invention.

[0022] The vehicle according to the third aspect of the present invention, by utilizing the electric assembly according to the second aspect of the present invention, has the advantages of simple process, low processing cost, no water leakage, and easy circulation of coolant.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0025] Figure 1 2 is a cross-sectional view of a motor controller according to the present invention, wherein the dotted line indicates the flow direction of the coolant.

[0026] Figure 2 is an exploded diagram of a motor controller according to the present invention.

[0027] Figure 3 It is an exploded view of the housing and water channel cover of the motor controller according to the present invention.

[0028] Figure 4 Schematic diagram of the structure of the cover of the motor controller according to the present invention.

[0029] Figure 5 is a cross-sectional view of a cover of a motor controller according to the present invention.

[0030] Figure 6 It is a simulation diagram of the NVH of the cover of the motor controller according to the present invention and the cover of the motor controller in the prior art. The solid line is the simulation diagram of the NVH of the cover of the motor controller in the prior art, and the dotted line is the simulation diagram of the NVH of the cover of the motor controller according to the present invention.

[0031] Figure 7 Schematic diagram of the structure of the electric assembly according to the present invention.

[0032] Reference numerals:

[0033] Motor controller 1, electric assembly 2,

[0034] Control box 100, cooling space 110, first cooling water channel 120, sealing ring 121, sealing groove 122, water inlet section 123, water storage section 124, cooling section 125, second cooling water channel 130, diversion rib 131, diversion water channel 132, water outlet trough 133, turning section 140, cooling dark groove 150, box body 160, cover body 170, mounting hole 171, reinforcing rib 172, first layer 173, second layer 174, damping layer 175, horizontal mounting foot 176, vertical mounting foot 177, three-phase line through hole 178, Xuanchang through hole 179,

[0035] Water channel cover plate 200, power module 300, heat sink pin 310, water inlet pipe 400, temperature sensor 500, drive control board 600, capacitor 700, capacitor cavity 710, capacitor shielding plate 720, DC bus 730, magnetic ring 740, magnetic ring fixing groove 750, three-phase injection molding part 760, variable connector 770, signal plug board 800, shielding cavity 810, motor 900, gearbox 910, water outlet pipe 930. DETAILED DESCRIPTION

[0036] Embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Embodiments of the present invention are described in detail below.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0038] In the description of the present invention, "plurality" means two or more.

[0039] The motor controller 1 according to an embodiment of the present invention will be described below with reference to the drawings.

[0040] like Figure 1-Figure 5 As shown, the motor controller 1 includes a control box 100 , a water channel cover plate 200 and a power module 300 .

[0041] A cooling space 110 is provided in the control box 100, and the coolant can flow in the cooling space 110. The water channel cover plate 200 is installed in the control box 100 and is located in the cooling space 110. The water channel cover plate 200 divides the cooling space 110 into a first cooling water channel 120 and a second cooling water channel 130. The first cooling water channel 120 and the second cooling water channel 130 are connected and are respectively located on opposite sides of the water channel cover plate 200. For example, the coolant can first enter the first cooling water channel 120 and then flow out of the cooling space 110 through the second cooling water channel 130. The power module 300 is installed in the control box 100 and extends into the first cooling water channel 120.

[0042] The first cooling water channel 120 and the second cooling water channel 130 are stacked structures. For example, the first cooling water channel 120 and the second cooling water channel 130 are stacked in the inside and outside directions of the control box 100, and the second cooling water channel 130 is closer to the outside of the control box 100 than the first cooling water channel 120.

[0043] According to the motor controller 1 of the embodiment of the present invention, a cooling space 110 is provided in the control box 100, and the water channel cover plate 200 is installed on the control box 100 and is located in the cooling space 110, and the water channel cover plate 200 divides the cooling space 110 into a first cooling water channel 120 and a second cooling water channel 130. In this way, the water channel cover plate 200 divides the cooling space 110 into a double-layer water channel, which not only shortens the length of the cooling space 110, but also eliminates the need to form a double-layer water channel by welding (such as friction welding), thereby simplifying the processing technology, reducing production costs, and reducing the risk of overall water leakage in the double-layer water channel.

[0044] In addition, the water channel cover plate 200 and the control box 100 are separately provided, which facilitates the disassembly and assembly of the water channel cover plate 200, reduces the difficulty of later maintenance of the first cooling water channel 120 and the second cooling water channel 130, and increases the overall service life of the control box 100. The water channel cover plate 200 can be replaced, and there is no need to replace the control box 100 due to damage to the water channel cover plate 200, thereby reducing maintenance costs.

[0045] In addition, the first cooling water channel 120 and the second cooling water channel 130 are connected and are respectively located on opposite sides of the water channel cover plate 200, and the power module 300 is installed in the control box 100 and extends into the first cooling water channel 120. In this way, not only the power module 300 is cooled, but also the power module 300 is directly extended into the first cooling water channel 120 to contact the coolant, which has a better heat dissipation effect and is convenient for the circulation of the coolant of the whole vehicle.

[0046] Thus, the motor controller 1 according to the embodiment of the present invention is not only constructed with a double-layer cooling water channel, but also has the advantages of simple process, low processing cost, and low water leakage.

[0047] Those skilled in the art will appreciate that the present invention does not impose any specific limitation on the specific number of the water channel cover plates 200 , that is, multiple water channel cover plates 200 may be provided to form more layers of cooling water channels.

[0048] According to some specific embodiments of the present invention, Figure 1-Figure 3 As shown, the first cooling water channel 120 is defined by the side wall of the cooling space 110 and the water channel cover plate 200. An opening is provided on the side of the first cooling water channel 120 facing away from the water channel cover plate 200, and the power module 300 extends into the first cooling water channel 120 through the opening. In this way, the power module 300 can be easily extended into the first cooling water channel 120, and the first cooling water channel 120 has a simple structure and low processing cost.

[0049] According to some specific embodiments of the present invention, the power module 300 has a heat dissipation pin 310, and the heat dissipation pin 310 extends into the first cooling water channel 120 through the opening. Through the provision of the heat dissipation pin 310, the contact area between the power module 300 and the coolant can be increased, the heat dissipation efficiency of the power module 300 can be improved, and the cross-sectional area of ​​a part of the first cooling water channel 120 can be reduced to prevent the hydraulic pressure loss of the coolant from being large, thereby ensuring a faster flow rate of the coolant, and further improving the heat dissipation efficiency of the power module 300.

[0050] Furthermore, if Figure 2 As shown, a sealing ring 121 is provided between the control box 100 and the power module 300, and the sealing ring 121 is provided around the first cooling water channel 120. It can be understood that the power module 300 covers the opening of the first cooling water channel 120, and the sealing ring 121 is provided between the power module 300 and the first cooling water channel 120 and around the opening, so that the sealing ring 121 can prevent the coolant from overflowing from the opening into the first cooling water channel 120, thereby improving the sealing of the first cooling water channel 120 and increasing the overall reliability of the motor controller 1.

[0051] Furthermore, if Figure 2 and Figure 3 As shown, the inner wall of the control box 100 facing the power module 300 is provided with a sealing groove 122, the sealing groove 122 is arranged around the first cooling water channel 120, and the sealing ring 121 is installed in the sealing groove 122. In this way, the sealing ring 121 is easy to disassemble and assemble, and its position relative to the first cooling water channel 120 is stable, which can better prevent the coolant from overflowing.

[0052] According to some specific embodiments of the present invention, Figure 1-Figure 3 As shown, the second cooling water channel 130 is defined by the bottom wall and side wall of the cooling space 110 and the water channel cover plate 200. In this way, the second cooling water channel 130 has a simple structure, low processing cost and is not easy to leak. It can be understood that the second cooling water channel 130 is located below the first cooling water channel 120, which facilitates the coolant to flow from the first cooling water channel 120 to the second cooling water channel 130.

[0053] According to some specific embodiments of the present invention, Figure 3 As shown, a diverter rib 131 is provided in the second cooling water channel 130, and the diverter rib 131 extends along the length direction of the second cooling water channel 130, and the diverter rib 131 divides the second cooling water channel 130 into at least two diverter channels 132. In this way, the cross-sectional area of ​​the diverter channel 132 is smaller than the cross-sectional area of ​​the second cooling water channel 130, which can prevent the large hydraulic pressure loss of the coolant due to the large cross-sectional area of ​​the second cooling water channel 130, thereby ensuring a faster flow rate of the coolant and further improving the heat dissipation efficiency of the power module 300.

[0054] According to some specific embodiments of the present invention, Figure 2 and Figure 3 As shown, the waterway cover plate 200 is connected to the control box 100 by threaded fasteners (e.g., bolts or screws). In this way, the connection between the waterway cover plate 200 and the control box 100 is stable and easy to disassemble and assemble.

[0055] According to some specific embodiments of the present invention, Figure 1 As shown, the first cooling water channel 120 includes a water inlet section 123, a water storage section 124 and a cooling section 125, the bottom wall of the cooling section 125 is higher than the bottom wall of the water inlet section 123, the water storage section 124 is connected between the water inlet section 123 and the cooling section 125, the bottom wall of the water storage section 124 extends upwardly obliquely from the water inlet section 123 to the cooling section 125, and the power module 300 extends into the cooling section 125. It can be understood that the coolant flows from the water inlet section 123 to the water storage section 124, then to the cooling section 125, and then to the second cooling water channel 130.

[0056] By setting the water storage section 1240, an inclined flow path is formed between the water inlet section 123 and the cooling section 125, and the coolant in the water inlet section 123 flows more smoothly to the cooling section 125, and the bottom wall height of the water inlet section 123 is relatively low, which can accommodate more coolant. After the coolant fills the water storage section 124, it will flow evenly to the cooling section 125, ensuring that there is sufficient coolant to cool the power module 300 and improving the uniformity of cooling the power module 300.

[0057] According to some specific embodiments of the present invention, Figure 1-Figure 3 As shown, the motor controller 1 further includes a water inlet pipe 400 , which is connected to the control box 100 and communicates with the first cooling water channel 120 . This facilitates the cooling liquid circulation of the whole vehicle and facilitates the cooling liquid to flow into the first cooling water channel 120 .

[0058] According to some specific embodiments of the present invention, Figure 1 As shown, the motor controller 1 further includes a temperature sensor 500, which is used to detect the temperature of the coolant in the cooling space 110. In this way, the vehicle controller can obtain the operating parameters of the motor controller 1 to prevent vehicle failure and ensure normal operation of the vehicle.

[0059] According to some specific embodiments of the present invention, Figure 1As shown, the first cooling water channel 120 and the second cooling water channel 130 are connected through the turning section 140, and the turning section 140 is defined by the edge of the water channel cover plate 200 and the side wall of the cooling water channel. The turning section 140 connects the adjacent ends of the first cooling water channel 120 and the second cooling water channel 130, and the first cooling water channel 120 and the second cooling water channel 130 are connected smoothly through the turning section 140. It can be understood that the turning section 140 is connected to the water outlet end of the first cooling water channel 120 and the water inlet end of the second cooling water channel 130 respectively.

[0060] Furthermore, the cooling space 110 has a cooling dark groove 150, which is located on the side of the turning section 140 away from the water channel cover plate 200, and the cooling dark groove 150 is recessed from the side wall of the cooling space 110 toward the direction away from the water channel cover plate 200, and the temperature sensor 500 is used to detect the temperature of the coolant in the cooling dark groove 150. In this way, the distance between the coolant and the temperature sensor 500 is closer, and the coolant temperature detected by the temperature sensor 500 is more accurate, and the temperature sensor 500 mainly detects the coolant flowing out of the first cooling water channel 120. In other words, the temperature of the coolant detected by the temperature sensor 500 is closer to the temperature of the power module 300, so the vehicle controller can obtain the temperature of the power module 300 to better ensure the normal operation of the vehicle.

[0061] According to some specific embodiments of the present invention, Figure 1-Figure 4 As shown, the control box 100 includes a box body 160 and a cover body 170, the cooling space 110 is arranged in the box body 160, for example, arranged at the bottom of the box body 160, the cover body 170 is installed on the box body 160, for example, installed on the top of the box body 160, and the side (such as the upper surface) of the cover body 170 facing away from the box body 160 is provided with a reinforcing rib 172. In this way, the rigidity of the cover body 170 as a whole can be improved by the reinforcing rib 172, thereby reducing the vibration of the motor controller 1 as a whole.

[0062] According to some specific embodiments of the present invention, Figure 4 As shown, the cover 170 is provided with a plurality of mounting holes 171 (e.g., threaded holes) spaced apart along its circumference, and the plurality of mounting holes 171 are arranged adjacent to the outer circumference of the cover 170. The cover 170 is mounted on the box 160 by a plurality of fasteners (e.g., bolts or screws) respectively matched with the plurality of mounting holes 171. In this way, the connection between the cover 170 and the box 160 is stable and easy to assemble and disassemble.

[0063] According to some specific embodiments of the present invention, Figure 4As shown, the reinforcing ribs 172 are arranged at intervals along the circumference of the cover body 170, and each reinforcing rib 172 extends from the geometric center of the cover body 170 to the outer peripheral edge of the cover body 170. For example, the cover body 170 is provided with a circular protrusion at the geometric center of the side facing away from the box body 160, and each reinforcing rib 172 extends from the outer peripheral surface of the circular protrusion toward the outer peripheral edge of the cover body 170, that is, the reinforcing ribs 172 and the circular protrusion are combined into a sun ray-shaped structure, which not only strengthens the rigidity of the cover body 170, but also makes the appearance of the cover body 170 more beautiful.

[0064] According to some specific embodiments of the present invention, Figure 5 As shown, the cover body 170 includes a first layer 173, a second layer 174 and a damping layer 175. The damping layer 175 is located between the first layer 173 and the second layer 174. The first layer 173, the damping layer 175 and the second layer 174 are stacked. The elasticity of the damping layer 175 is greater than the elasticity of the first layer 173 and the elasticity of the second layer 174. The first layer 173 and the second layer 174 can be metal parts, such as steel plates. The damping layer 175 can be a rubber damping part. This helps to reduce the noise radiation generated by the mechanical vibration of the cover body 170 and reduce the overall mechanical noise of the motor controller 1. Figure 6 As shown, compared with the cover in the related art, under the same other conditions, the cover 170 of the embodiment of the present invention can reduce the noise by about 10dB at most. The cover 170 of the embodiment of the present invention can reduce the resonance between the motor controller 1 as a whole and the motor 900 and the gearbox 910, thereby improving the vibration and acoustic roughness (Noise, Vibration, Harshness, NVH) of the motor controller 1.

[0065] According to some specific embodiments of the present invention, Figure 1 and Figure 2 As shown, the motor controller 1 also includes a control board and a drive board, which are integrally formed into a drive control board 600 and installed in the control box 100. In this way, the shielding plate bracket and the pulse width modulation (PWM) line between the control board and the drive board can be omitted, which is conducive to reducing the height of the motor controller 1.

[0066] According to some specific embodiments of the present invention, Figure 2 and Figure 3As shown, the motor controller 1 also includes a capacitor 700, which is installed in the control box 100. The drive control board 600 is integrated with a detection copper bus, which is fixedly connected to one end of the sampling connection column of the capacitor 700 through a threaded fastener, and the other end of the sampling connection column of the capacitor 700 is fixedly connected to the connection column of the DC bus 730. The DC bus 730 is connected in parallel with an external power supply. The drive control board 600 detects the voltage and current parameters input to the DC bus 730 through the detection copper bus.

[0067] For example, the control box 100 is provided with a DC bus assembly hole for passing the DC bus 730. The motor controller 1 further includes a magnetic ring 740, through which the DC bus 730 passes, and the control box 100 is provided with a magnetic ring fixing groove 750 for fixing the magnetic ring 740.

[0068] The drive control board 600 is welded to one end of the power module 300 facing away from the cooling space 110, and the power module 300 is electrically connected to the capacitor 700. For example, the detection copper bar can be fixed to the control box 100, so that the drive control board 600 can sample the input power of the DC bus 730, and also fix the drive control board 600, saving cost and space, and facilitating the disassembly of the drive control board 600.

[0069] According to some specific embodiments of the present invention, Figure 2 As shown, the motor controller 1 further includes a signal plug board 800, the control box 100 has a shielding cavity 810, and the signal plug board 800 is located in the shielding cavity 810. The shielding cavity 810 and the water inlet pipe 400 are respectively arranged at both ends of the cooling space 110, and the signal plug board 800 is provided with a signal connector. The signal plug board 800 is connected to the drive control board 600 through a signal connection pin and transmits signals. In this way, the signal plug board 800 can be prevented from being interfered, the signal stability of the motor controller 1 is ensured, and the overall electromagnetic compatibility (EMC) of the motor controller 1 is improved.

[0070] According to some specific embodiments of the present invention, Figure 2 and Figure 3 As shown, the motor controller 1 also includes a capacitor 700 and a capacitor shielding plate 720, a capacitor cavity 710 is formed in the control box 100, the capacitor 700 is installed in the capacitor cavity 710, and the capacitor shielding plate 720 is installed in the control box 100 to cover the capacitor cavity 710. Among them, the capacitor cavity 710 can be located on one side in the width direction of the cooling space 110. The capacitor shielding plate 720 can reduce the radiation of the capacitor 700 to the outside of the capacitor cavity 710, ensuring that other electrical components of the motor controller 1 (for example, the drive control board 600) can operate normally, which is further conducive to improving the overall electromagnetic compatibility of the motor controller 1.

[0071] The electric power assembly 2 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0072] like Figure 7 As shown, the electric assembly 2 includes a motor controller 1 according to the above embodiment of the present invention, a motor 900 and a gearbox 910 .

[0073] The motor 900 has a motor cooling water channel, which is connected to the second cooling water channel 130, that is, the coolant flows from the first cooling water channel 120 to the second cooling water channel 130 and then to the motor cooling water channel, and the gearbox 910 is installed on the motor 900. For example, after the coolant flows from the water inlet pipe 400 of the motor controller 1 into the first cooling water channel 120 to dissipate heat for the power module 300, it flows from the second cooling water channel 130 into the motor cooling water channel, thereby achieving cooling and heat dissipation of the motor 900 and the motor controller 1, which can reduce the overall volume of the electric assembly 2 and is conducive to the miniaturization of the electric assembly 2.

[0074] The electric assembly 2 according to the embodiment of the present invention, by utilizing the motor controller 1 according to the above embodiment of the present invention, has the advantages of simple process, low processing cost, low water leakage, and easy circulation of coolant.

[0075] According to some specific embodiments of the present invention, Figure 1 and Figure 3 As shown, the second cooling water channel 130 is provided with a water outlet trough 133, and the second cooling water channel 130 is connected with the motor cooling water channel through the water outlet trough 133. Through the provision of the water outlet trough 133, the coolant in the second cooling water channel 130 can be concentrated and then discharged into the motor cooling water channel, thereby increasing the convenience of the coolant circulation between the second cooling water channel 130 and the motor cooling water channel.

[0076] According to some specific embodiments of the present invention, Figure 7 As shown, the electric assembly 2 further includes a water outlet pipe 930, which is installed on the motor 900 and communicates with the motor cooling water channel. In this way, the coolant in the motor cooling water channel can be discharged to realize the circulation of the coolant, and the structure of the electric assembly 2 is more reasonable.

[0077] In some embodiments of the present invention, Figure 2As shown, the motor controller 1 also includes a three-phase injection molded part 760 and a transformer connector 770, and the control box 100 is provided with a three-phase line through hole 178 and a transformer through hole 179, so that the three-phase injection molded part 760 and the transformer connector 770 can be connected to the motor 900 after being assembled to the motor controller 1. In addition, in order to enable the motor controller 1 to be well installed and fixed on the motor 900 and the gearbox 910, the control box 100 is also provided with a plurality of horizontal mounting feet 176 and at least one vertical mounting foot 177, wherein the horizontal mounting foot 176 is parallel to the length direction of the control box 100, and the vertical mounting foot 177 is perpendicular to the length direction of the control box 100. By fixing the plurality of horizontal mounting feet 176 and the vertical mounting feet 177 on the motor 900 and the gearbox through screws, the mode of the motor controller 1 installed on the motor 900 can be further improved, and the connection strength between the motor controller 1 and the motor 900 is increased.

[0078] It can be understood that the variable connector 770 is a combination of multiple sensors for detecting the operating parameters of the motor 900, such as the speed and voltage of the motor 900.

[0079] A vehicle according to an embodiment of the present invention will be described below with reference to the accompanying drawings. The vehicle includes an electric assembly 2 according to the above-mentioned embodiment of the present invention.

[0080] The vehicle according to the embodiment of the present invention has the advantages of simple process, low processing cost, low water leakage, and easy circulation of coolant by utilizing the electric assembly 2 according to the above embodiment of the present invention.

[0081] The motor controller 1 , the electric assembly 2 and other components and operations of the vehicle according to the embodiment of the present invention are well known to those skilled in the art and will not be described in detail here.

[0082] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0083] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A motor controller, characterized in that: include: A control box, wherein a cooling space is provided in the control box; a water channel cover plate, the water channel cover plate being installed on the control box and being located in the cooling space, the water channel cover plate dividing the cooling space into a first cooling water channel and a second cooling water channel, the first cooling water channel and the second cooling water channel being connected and being respectively located at opposite sides of the water channel cover plate, the second cooling water channel being located below the first cooling water channel, so as to facilitate the coolant to flow from the first cooling water channel to the second cooling water channel; A power module, wherein the power module is installed in the control box and extends into the first cooling water channel; The first cooling water channel includes a water inlet section, a water storage section and a cooling section, the bottom wall of the cooling section is higher than the bottom wall of the water inlet section, the water storage section is connected between the water inlet section and the cooling section, the bottom wall of the water storage section extends upwardly obliquely from the water inlet section to the cooling section, and the power module extends into the cooling section.

2. The motor controller according to claim 1, characterized in that: The first cooling water channel is defined by the side wall of the cooling space and the water channel cover plate. An opening is provided on a side of the first cooling water channel facing away from the water channel cover plate, and the power module extends into the first cooling water channel through the opening.

3. The motor controller according to claim 1, characterized in that: A sealing ring is provided between the control box and the power module, and the sealing ring is arranged around the first cooling water channel; A sealing groove is provided on the inner wall of the control box facing the power module. The sealing groove is arranged around the first cooling water channel, and the sealing ring is installed in the sealing groove.

4. The motor controller according to claim 1, characterized in that: The second cooling water channel is defined by the bottom wall and side walls of the cooling space and the water channel cover plate; A diverter rib is provided in the second cooling water channel. The diverter rib extends along the length direction of the second cooling water channel. The diverter rib divides the second cooling water channel into at least two diverter water channels.

5. The motor controller according to claim 1, characterized in that: Also includes: A water inlet pipe is connected to the control box and communicated with the first cooling water channel.

6. The motor controller according to claim 1, characterized in that: Also includes: A temperature sensor, the temperature sensor is used to detect the temperature of the coolant in the cooling space; The first cooling water channel and the second cooling water channel are connected through a turning section, and the turning section is defined by the edge of the water channel cover plate and the side wall of the cooling water channel.

7. The motor controller according to claim 6, characterized in that: The cooling space has a cooling dark groove, which is located on the side of the turning section away from the water channel cover plate. The cooling dark groove is recessed from the side wall of the cooling space toward the direction away from the water channel cover plate, and the temperature sensor is used to detect the temperature of the coolant in the cooling dark groove.

8. The motor controller according to claim 1, characterized in that: The control box comprises: A box body, wherein the cooling space is arranged in the box body; A cover body, the cover body is mounted on the box body, and a side of the cover body facing away from the box body is provided with reinforcing ribs; The cover body is provided with a plurality of mounting holes spaced apart along the circumference thereof, the plurality of mounting holes being arranged adjacent to the outer circumference of the cover body, and the cover body is mounted on the box body by a plurality of fasteners respectively matched with the plurality of mounting holes; The reinforcing ribs are multiple and spaced apart along the circumference of the cover body, and each of the reinforcing ribs extends from the geometric center of the cover body to the outer peripheral edge of the cover body.

9. The motor controller according to claim 8, characterized in that: The cover body comprises: First and second floors; A damping layer is located between the first layer and the second layer. The first layer, the damping layer and the second layer are stacked. The elasticity of the damping layer is greater than that of the first layer and the second layer.

10. The motor controller according to claim 1, characterized in that: Also includes: A control board and a drive board, wherein the drive board and the control board are integrally formed into a drive control board and are installed in the control box; The capacitor is installed in the control box, the drive control board is integrated with a detection copper bar, the detection copper bar is connected to the capacitor, and the drive control board detects the parameters of the capacitor through the detection copper bar.

11. The motor controller according to claim 1, characterized in that: Also includes: A signal plug-in board, wherein the control box has a shielding cavity, and the signal plug-in board is located in the shielding cavity; A capacitor, wherein a capacitor cavity is provided in the control box, and the capacitor is installed in the capacitor cavity; A capacitor shielding plate is installed on the control box and covers the capacitor cavity.

12. An electric assembly, characterized in that: include: A motor controller according to any one of claims 1 to 11; A motor, wherein the motor has a motor cooling water channel, and the motor cooling water channel is in communication with the second cooling water channel; A gearbox is mounted on the motor.

13. A vehicle, characterized in that: Comprising an electric powertrain according to any one of claims 12.

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