Controller, dual-motor driving device and vehicle

Abstract

The utility model provides a controller, a dual-motor driving device and a vehicle, the controller is provided with a support comprising a water cooling plate and a support column, a power module, a filter, a capacitor, a driving plate, a shielding plate and a control plate are all fixed on the support, and the controller is connected with a housing of the dual-motor driving device through the support. Therefore, an existing controller shell can be omitted, and the controller is more compact in structure and smaller in size.

Description

Technical Field

[0001] The utility model relates to the field of vehicle equipment, and mainly relates to a controller, a dual-motor driving device and a vehicle. Background Art

[0002] The controller of an existing dual-motor drive device usually includes a control board, a shielding plate, a driving board, a power module, a water-cooling plate, a capacitor and a casing, wherein the casing is a frame structure with an open side, and the control board, shielding plate, driving board, power module, water-cooling plate and capacitor are all fixed inside the casing, and the casing fully surrounds the control board, shielding plate, driving board, power module, water-cooling plate and capacitor, resulting in a large size and complex structure of the controller. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a controller, a dual-motor drive device and a vehicle to solve the problem of large size of the existing controller.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A controller includes a bracket, a shielding plate, a power module, a driving plate, a control plate, a capacitor and a filter; the bracket includes a water-cooled plate and a support column, the support column protruding from one side of the water-cooled plate; the shielding plate is fixed to one end of the support column away from the water-cooled plate, and a space is formed between the shielding plate and the water-cooled plate; the power module is fixed to the water-cooled plate, and the power module is located in the space; the driving plate is installed between the power module and the shielding plate, and is electrically connected to the power module; the control plate is fixedly connected to the shielding plate, and is located on the side of the shielding plate away from the driving plate, and the control plate is electrically connected to the driving plate; the capacitor is fixed to the water-cooled plate, and is electrically connected to the power module; the filter is fixed to the water-cooled plate, and is electrically connected to the capacitor. That is, the power module, the filter, the capacitor, the driving plate, the shielding plate and the control plate are all fixed on the bracket, and the controller is connected to the housing of the dual-motor drive device through the bracket, so that the existing controller housing can be omitted, thereby making the controller structure more compact and smaller in size.

[0006] In some solutions of the present application, a plurality of support columns are provided, and the plurality of support columns are arranged at intervals and are all located outside the power module, so that a wiring harness can pass through two adjacent support columns, thereby making the structure more compact.

[0007] In some schemes of the present application, the support column is cylindrical, and one axial end of the support column is fixedly connected to a side surface of the water-cooled plate, and the other end is the free end of the support column. The shielding plate is fixed on the free end of the support column, thereby reducing the volume occupied by the support column and making the structure more compact; and / or the support column and the water-cooled plate are integrally formed, making the bracket production more convenient.

[0008] In some schemes of the present application, the water-cooling plate is in a flat plate shape, and the water-cooling plate includes a first side surface and a second side surface, the second side surface is arranged opposite to the first side surface, and the areas of the first side surface and the second side surface are greater than the areas of other sides of the water-cooling plate; the water-cooling plate is provided with a water inlet, a water outlet, a first channel and a second channel, one end of the first channel is connected to the water inlet, and the other end is connected to the water outlet, one end of the second channel is connected to the water inlet, and the other end is connected to the water outlet; the power module includes a first power module and a second power module, the first power module is mounted on the first window, and the second power module is mounted on the second window; the position of the first power module corresponds to the first channel and can be in contact with the coolant, the position of the second power module corresponds to the second channel and can be in contact with the coolant, so that the coolant can cool the first power module and the second power module at the same time, and improve the heat transfer efficiency, so that the temperature difference of the coolant at the first power module and the second power module is small, thereby reducing the temperature difference between the first power module and the second power module, and improving the cooling effect. The support column protrudes from the first side surface, and the capacitor and the filter are attached to the second side surface, so that the water cooling plate can also cool the capacitor and the filter.

[0009] In some schemes of the present application, the first power module includes a first base plate and a first electrical component, the first base plate is fixed on the water-cooled plate and seals the first window, and the first electrical component is fixed on a side of the first base plate away from the water-cooled plate; a plurality of first cooling needles are distributed on a side of the first base plate away from the first electrical component, and the plurality of first cooling needles pass through the first window and extend into the first channel; the second power module includes a second base plate and a second electrical component, the second base plate is fixed on the water-cooled plate and seals the second window, the second electrical component is fixed on a side of the second base plate away from the water-cooled plate, and a plurality of second cooling needles are distributed on a side of the second base plate away from the second electrical component, and the plurality of second cooling needles pass through the second window and extend into the second channel, so that the first power module and the second power module are both in contact with the coolant, and the contact area between the first power module and the second power module and the coolant is increased, the heat transfer path is shortened, and the cooling effect is improved.

[0010] In some schemes of the present application, the side of the first power module facing away from the second power module is the output end of the first power module, and the side of the second power module facing away from the first power module is the output end of the second power module; the controller also includes a first three-phase connector and a second three-phase connector, the first three-phase connector is connected to the output end of the first power module, and the second three-phase connector is connected to the output end of the second power module, and the first three-phase connector and the second three-phase connector are respectively arranged on both sides of the power module, so that the distance between the first three-phase connector and the first motor and the distance between the second three-phase connector and the second motor are shortened.

[0011] In some schemes of the present application, a side of the first power module close to the second power module is the input end of the first power module, and a side of the second power module close to the first power module is the input end of the second power module, and the input end of the first power module and the input end of the second power module are both connected to the capacitor through wires; the water-cooling plate is provided with a wire through hole between the first channel and the second channel, and the wire through hole connects the first side surface and the second side surface, and the wire connecting the capacitor and the first power module and the wire connecting the capacitor and the second power module both pass through the wire through hole, thereby shortening the wiring length between the first power module and the capacitor and between the second power module and the capacitor, making the structure of the controller more compact and reducing the volume of the controller.

[0012] In some schemes of the present application, the driving board includes a first driving board and a second driving board, the first driving board is electrically connected to the first power module, and the second driving board is electrically connected to the second power module; the first driving board is located between the first power module and the shielding plate, and the second driving board is located between the second power module and the shielding plate, so that the shielding plate can simultaneously realize magnetic field shielding between the first driving board and the control board, and between the second driving board and the control board.

[0013] A dual-motor drive device includes a housing, a motor, a controller and an electrical connector, the housing is formed with a motor mounting cavity and a controller mounting cavity; the motor includes a first motor and a second motor, the first motor and the second motor are both mounted in the motor mounting cavity; the controller is mounted in the controller mounting cavity; the electrical connector includes a first electrical connector and a second electrical connector, the first electrical connector is arranged between the first motor and the controller, and is electrically connected to the first motor and the controller, and the second electrical connector is arranged between the second motor and the controller, and is electrically connected to the second motor and the controller.

[0014] A vehicle comprises a vehicle body, wheels and a dual-motor drive device, wherein the dual-motor drive device is fixed on the vehicle body, and the wheels are drivingly connected to the motors.

[0015] Beneficial effect: The controller of the present application is provided with a bracket including a water-cooling plate and a support column, and the power module, filter, capacitor, drive board, shielding plate and control board are all fixed on the bracket, and the controller is connected to the casing of the dual-motor drive device through the bracket, so that the existing controller casing can be omitted, thereby making the structure of the controller more compact and the size smaller.

[0016] The dual-motor drive device of the present application includes the above-mentioned controller, wherein the controller is smaller in size and can be more conveniently arranged on the housing of the dual-motor drive device. That is to say, the controller installation cavity for installing the controller can be set smaller, making the dual-motor drive device more compact and smaller in size.

[0017] The vehicle of the present application includes the above-mentioned dual-motor drive device, which makes the overall structure of the vehicle more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of a dual-motor driving device in one embodiment.

[0019] Figure 2 yes Figure 1 Explosion diagram after removing the end cap and cover plate.

[0020] Figure 3 It is a schematic diagram of the structure of the motor and electronic control housing in one embodiment.

[0021] Figure 4 It is a schematic diagram of the structure of a controller in one embodiment.

[0022] Figure 5 yes Figure 4 The controller shown is a schematic diagram of the structure when viewed from an upward perspective.

[0023] Figure 6 yes Figure 4 An exploded schematic diagram of the controller is shown.

[0024] Figure 7 It is a schematic diagram of the structure of a bracket in one embodiment.

[0025] Figure 8 yes Figure 7 The front view of the bracket is shown, wherein the arrow indicates the direction of coolant flow.

[0026] Fig. 9 It is a schematic diagram of the structure of the first power module when viewed from an upward perspective.

[0027] Fig.10 It is a schematic diagram of the structure of the first power module from a top view.

[0028] Fig.11 It is a schematic diagram of the structure of the second power module when viewed from an upward angle.

[0029] Fig.12 is a schematic diagram of the structure of the second power module from a top view.

[0030] Fig.13 Schematic diagram of the structure of a capacitor in one embodiment.

[0031] Main component symbol description: 1- bracket; 11- water cooling plate; 111- water inlet; 112- water outlet; 113- first channel; 114- second channel; 115- first side; 116- second side; 117- first window; 118- second window; 119- wire through hole; 12- support column; 2- power module; 21- first power module; 211- first bottom plate; 212- first electrical component; 213- first cooling needle; 214- input end of first power module; 215- output end of first power module; 22- second power module; 221- second bottom plate; 222- second electrical component; 223- second cooling needle; 224- input end of second power module ;225-output end of the second power module;3-capacitor;31-input end of the capacitor;32-output end of the capacitor;4-shielding plate;5-drive board;51-first drive board;52-second drive board;6-control board;7-filter;81-first three-phase connector;82-second three-phase connector;83-wiring harness;10-controller;201-motor installation cavity;202-controller installation cavity;203-water inlet channel;204-water outlet channel;205-motor and electronic control housing;206-end cover;207-cover plate;30-motor;301-first motor;302-second motor;40-electrical connector;401-first electrical connector;402-second electrical connector. DETAILED DESCRIPTION

[0032] The utility model provides a controller, a dual-motor drive device and a vehicle. In order to make the purpose, technical solution and effect of the utility model clearer and more specific, the utility model is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the protection scope of the utility model.

[0033] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "inside", "outside", etc., indicating orientations or positional relationships, are 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, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0035] A vehicle comprises a vehicle body, wheels and a dual-motor drive device, wherein the dual-motor drive device is fixed on the vehicle body, and the wheels are drivingly connected to the motors, so that the vehicle moves under the drive of the motors of the dual-motor drive device.

[0036] See also Figure 1-Figure 3 , wherein the dual-motor drive device includes a housing, a motor 30, a controller 10 and an electrical connector 40. The housing is formed with a motor installation cavity 201 and a controller installation cavity 202, the controller 10 is installed in the controller installation cavity 202, the motor 30 includes a first motor 301 and a second motor 302, both of which are installed in the motor installation cavity 201, the electrical connector 40 includes a first electrical connector 401 and a second electrical connector 402, the first electrical connector 401 is arranged between the first motor 301 and the controller 10, and is electrically connected to the first motor 301 and the controller 10, the second electrical connector 402 is arranged between the second motor 302 and the controller 10, and is electrically connected to the second motor 302 and the controller 10, so that the controller 10 can control the first motor 301 and the second motor 302 to work respectively.

[0037] exist Figure 1In the illustrated embodiment, the motor mounting cavity 201 includes a first motor mounting cavity and a second motor mounting cavity, the first motor mounting cavity and the second motor mounting cavity are coaxially arranged, the first motor 301 is installed in the first motor mounting cavity, the second motor 302 is installed in the second motor mounting cavity, and the controller mounting cavity 202 is arranged on one side of the circumference of the first motor mounting cavity and the second motor mounting cavity, so that the distance between the first motor 301 and the controller 10 and the distance between the second motor 302 and the controller 10 are shortened, that is, the total length of the first electrical connector 401 and the second electrical connector 402 is shortened.

[0038] In one embodiment, the wheel includes a first wheel end and a second wheel end, the first wheel end is transmission-connected to the first motor 301, and the second wheel end is transmission-connected to the second motor 302, so that the first motor 301 and the second motor 302 respectively drive the two wheel ends (i.e., the first wheel end and the second wheel end) to rotate, that is, the first wheel end and the second wheel end are independently driven by the first motor 301 and the second motor 302 respectively, forming a distributed dual-motor drive device.

[0039] In one embodiment, the wheel includes a first wheel end and a second wheel end, and the first motor 301 and the second motor 302 are simultaneously connected to the first wheel end and the second wheel end in driving connection. For example, the first wheel end and the second wheel end are respectively connected to two output half shafts of the differential, and the first motor 301 and the second motor 302 are both connected to the differential, so that one or both of the first motor 301 and the second motor 302 simultaneously drive the first wheel end and the second wheel end to rotate, forming a dual-motor electric drive device.

[0040] In one embodiment, the housing includes a motor and electronic control housing 205, an end cover 206 and a cover plate 207. The motor installation cavity 201 and the controller installation cavity 202 are both arranged on the motor and electronic control housing 205. The end cover 206 is fixed to the end of the motor and electronic control housing 205 to seal the opening of the motor installation cavity 201. The cover plate 207 is fixed to the motor and electronic control housing 205 to seal the opening of the controller installation cavity 202.

[0041] In one embodiment, a reducer is further provided between the end cover 206 and the motor electronic control housing 205 , the reducer is connected to the output end of the motor 30 , and the motor 30 is transmission-connected to the wheel end via the reducer.

[0042] See also Figure 4-Figure 6, the controller 10 includes a bracket 1, a power module 2, a filter 7, a capacitor 3, a drive board 5, a shielding plate 4 and a control board 6, the power module 2, the filter 7, the capacitor 3, the drive board 5, the shielding plate 4 and the control board 6 are connected to the bracket 1, and are fixedly connected to the housing through the bracket 1, so that the controller 10 is fixed in the controller installation cavity 202 of the housing. Among them, the filter 7 is electrically connected to the capacitor 3, the capacitor 3 is electrically connected to the power module 2, the drive board 5 is electrically connected to the power module 2, the control board 6 is electrically connected to the drive board 5, and the external high-voltage current (such as the high-voltage alternating current formed by the power battery through the transformer) is connected to the filter 7, so that the current passes through the filter 7, the capacitor 3, and the power module 2 to the motor 30, and the filter 7 and the capacitor 3 make the current more stable. The control board 6 and the drive board 5 are electrically connected to the low voltage, and the control board 6 and the drive board 5 respond to the vehicle demand and combine the various information collected by the internal sensor to control the three-phase current output of the power module 2 to control the output torque of the motor 30.

[0043] The bracket 1 of the present application includes a water-cooled plate 11 and a support column 12, the water-cooled plate 11 includes a first side surface 115 and a second side surface 116, the support column 12 protrudes from the first side surface 115 of the water-cooled plate 11, the shielding plate 4 is fixed to one end of the support column 12 away from the water-cooled plate 11, a space is formed between the shielding plate 4 and the water-cooled plate 11, the power module 2 is fixed on the water-cooled plate 11, the power module 2 is located in the space, the drive board 5 is installed between the power module 2 and the shielding plate 4, the control board 6 is fixedly connected to the shielding plate 4, and is located on the side of the shielding plate 4 away from the drive board 5, and the capacitor 3 and the filter 7 are both attached to the second side surface 116 of the water-cooled plate 11.

[0044] When the controller 10 is mounted on the housing, it is fixedly connected to the housing through the bracket 1, so that the overall structure of the controller 10 is fixed on the housing. Among them, the controller 10 of the present application is connected to the power module 2, the filter 7, the capacitor 3, the drive board 5, the shielding plate 4 and the control board 6 through the bracket 1, so that there is no need to set up a controller housing. In other words, the present application uses the bracket 1 including the water-cooled plate 11 and the support column 12, so that the existing controller housing can be omitted, thereby making the structure of the controller more compact and smaller in size.

[0045] The power module 2 of the present application includes a first power module 21 and a second power module 22 . The first power module 21 is used to control the three-phase current output of the first motor 301 , and the second power module 22 is used to control the three-phase current output of the second motor 302 .

[0046] See also Figure 7-Figure 8The water cooling plate 11 is provided with a water inlet 111, a water outlet 112, a first channel 113 and a second channel 114. One end of the first channel 113 is connected to the water inlet 111, and the other end is connected to the water outlet 112. One end of the second channel 114 is connected to the water inlet 111, and the other end is connected to the water outlet 112, so that the first channel 113 and the second channel 114 form a parallel cooling channel. The position of the first power module 21 corresponds to the first channel 113, so that the coolant in the first channel 113 can cool the first power module 21, and the position of the second power module 22 corresponds to the second channel 114, so that the coolant in the second channel 114 can cool the second power module 22.

[0047] See also Figure 3 In one embodiment, the housing is formed with a water inlet channel 203 and a water outlet channel 204, the water inlet 111 on the water cooling plate 11 is in communication with the water inlet channel 203, and the water outlet 112 on the water cooling plate 11 is in communication with the water outlet channel 204, so that the coolant can be diverted to the first channel 113 and the second channel 114 through the water inlet channel 203 and the water inlet 111 in sequence, and the coolant in the first channel 113 and the second channel 114 converges at the water outlet 112 and is discharged from the water outlet channel 204. Among them, the temperature difference of the coolant in the first channel 113 and the second channel 114 is small, and the coolant cools the first power module 21 and the second power module 22 in the first channel 113 and the second channel 114 respectively, so that the first power module 21 and the second power module 22 are cooled at the same time, so that the temperatures of the first power module 21 and the second power module 22 are close, and the cooling effect is good.

[0048] Among them, the end of the water inlet channel 203 away from the water inlet 111 is connected to the water tank, and the water outlet channel 204 is connected to the water tank away from the water outlet 112, so that the water tank, the water inlet channel 203, the water inlet 111, the first channel 113 and the second channel 114, the water outlet 112 and the water outlet channel 204 form a circulation channel for the coolant.

[0049] In other embodiments, the water inlet 111 and the water outlet 112 on the water-cooling plate 11 are both connected to the water tank through pipes to form a circulation channel for the coolant.

[0050] See also Figure 7-Figure 8 The power module 2 is fixed on the first side surface 115 to achieve cooling of the power module 2 , and the capacitor 3 is attached to the second side surface 116 to achieve cooling of the capacitor 3 .

[0051] The water-cooling plate 11 is in a flat plate shape, and the second side surface 116 is arranged opposite to the first side surface 115, and the area of ​​the first side surface 115 and the second side surface 116 is greater than the area of ​​the other side surfaces of the water-cooling plate 11. In this embodiment, the two large surfaces of the water-cooling plate 11 are the first side surface 115 and the second side surface 116, so that the contact area between the power module 2 and the water-cooling plate 11 and the contact area between the capacitor 3 and the water-cooling plate 11 can be increased, thereby improving the heat exchange effect.

[0052] In a preferred embodiment, the first channel 113 and the second channel 114 are flat (in Figure 7 In the illustrated embodiment, the cross-sections of the first channel 113 and the second channel 114 are both rectangular), and the projection area of ​​the first channel 113 on the first side surface 115 is close to or equal to the projection area of ​​the first power module 21 on the first side surface 115, and the positions of the two coincide; the projection area of ​​the second channel 114 on the first side surface 115 is close to or equal to the projection area of ​​the second power module 22 on the first side surface 115, and the positions of the two coincide, thereby increasing the heat exchange area between the coolant and the water-cooled plate 11.

[0053] See also Figure 6 and Fig.13 In one embodiment, the capacitor 3 includes a heat conducting plate, a capacitor core, an input end 31 of the capacitor and an output end 32 of the capacitor. The input end 31 of the capacitor is connected to the capacitor core and the filter 7. The output end 32 of the capacitor is connected to the capacitor core, the input end 214 of the first power module and the input end 224 of the second power module. The capacitor core and the heat conducting plate are potted together. The capacitor 3 is in contact with the second side surface 116 of the water cooling plate 11 on one side of the heat conducting plate, so as to improve the cooling effect of the capacitor 3.

[0054] In one embodiment, the filter 7 is also fixed on the second side surface 116 , and the water cooling plate 11 can also cool the filter 7 .

[0055] In the above, the power module 2 , the capacitor 3 and the filter 7 are electrical components used by the controller 10 to circulate high voltage current. Placing the power module 2 , the capacitor 3 and the filter 7 close to the water cooling plate 11 can improve the cooling effect of the controller 10 .

[0056] See also Figure 7-Figure 12In detail, a first window 117 and a second window 118 are provided on the first side surface 115, and the first window 117 is connected to the first channel 113. The first power module 21 includes a first base plate 211 and a first electrical component 212. The first base plate 211 is a heat-conducting structure, and the first electrical component 212 is an electrical component for controlling the output of three-phase current to the first motor 301. The first base plate 211 is fixed on the water-cooled plate 11, and the first window 117 is sealed, so that the first base plate 211 can contact the coolant in the first channel 113, shorten the heat transfer path, and improve the heat exchange effect between the first base plate 211 and the coolant. The first electrical component 212 is fixed on the side of the first base plate 211 away from the water-cooled plate 11, so that the heat of the first electrical component 212 is transferred to the coolant through the first base plate 211, thereby improving the cooling effect of the first electrical component 212.

[0057] In one embodiment, a plurality of first cooling needles 213 are distributed on a side of the first bottom plate 211 away from the first electrical component 212. The plurality of first cooling needles 213 pass through the first window 117 and extend into the first channel 113, thereby increasing the contact area between the first bottom plate 211 and the coolant and improving the heat exchange effect between the first bottom plate 211 and the coolant.

[0058] Similarly, the second window 118 is connected to the second channel 114, and the second power module 22 includes a second base plate 221 and a second electrical component 222. The second base plate 221 is a heat-conducting structure, and the second electrical component 222 is an electrical component for controlling the output of the three-phase current to the second motor 302. The second base plate 221 is fixed on the water-cooled plate 11, and the second window 118 is sealed, so that the second base plate 221 can contact the coolant in the second channel 114, shorten the heat transfer path, and improve the heat exchange effect between the second base plate 221 and the coolant. The second electrical component 222 is fixed on the side of the second base plate 221 away from the water-cooled plate 11, so that the heat of the second electrical component 222 is transferred to the coolant through the second base plate 221, thereby improving the cooling effect of the second electrical component 222.

[0059] In one embodiment, a plurality of second cooling needles 223 are distributed on a side of the second bottom plate 221 away from the second electrical component 222. The plurality of second cooling needles 223 pass through the second window 118 and extend into the second channel 114, thereby increasing the contact area between the second bottom plate 221 and the coolant and improving the heat exchange effect between the second bottom plate 221 and the coolant.

[0060] In one embodiment, the first channel 113 and the second channel 114 are symmetrically arranged, the first window 117 and the second window 118 are symmetrically arranged, the first power module 21 and the second power module 22 have the same structure, and the two are symmetrically arranged, so that the temperatures of the first power module 21 and the second power module 22 are the same or close, and the structure of the controller 10 is more compact.

[0061] The water cooling plate 11 is provided with a wire through hole 119 between the first channel 113 and the second channel 114. The wire through hole 119 connects the first side surface 115 and the second side surface 116. The wires connecting the capacitor 3 and the power module 2 pass through the wire through hole 119, making the structure more compact.

[0062] The input end 214 of the first power module is arranged on a side close to the second power module 22, that is, the input end 214 of the first power module is arranged on a side close to the wire through hole 119, so that the wiring length between the first power module 21 and the capacitor 3 is shortened. The output end 215 of the first power module is arranged on a side of the first power module 21 away from the wire through hole 119. The controller 10 also includes a first three-phase connector 81, which is connected to the output end 215 of the first power module, shortening the distance between the first three-phase connector 81 and the wiring terminal of the first motor 301, that is, shortening the length required for the first electrical connector 401, thereby making the overall structure of the controller 10 and the overall structure of the dual-motor drive device more compact.

[0063] Similarly, the input end 224 of the second power module is arranged on a side close to the first power module 21, that is, the input end 224 of the second power module is arranged on a side close to the wire through hole 119, so that the wiring length between the second power module 22 and the capacitor 3 is shortened, and the output end 225 of the second power module is arranged on the side of the second power module 22 away from the wire through hole 119. The controller 10 also includes a second three-phase connector 82, and the second three-phase connector 82 is connected to the output end 225 of the second power module, which shortens the distance between the second three-phase connector 82 and the wiring terminal of the second motor 302, that is, shortens the length required for the second electrical connector 402, thereby making the overall structure of the controller 10 and the overall structure of the dual-motor drive device more compact.

[0064] In one embodiment, the output terminal 32 of the capacitor is directly connected to the input terminal 214 of the first power module and the input terminal 224 of the second power module through the wire through hole 119, so that the structure is more compact.

[0065] The controller 10 also includes a current sensor, which is electrically connected to the driving board. The first three-phase connector 81 and the second three-phase connector 82 are both provided with current sensors, and the current sensors are used to detect the current on the first three-phase connector 81 and the second three-phase connector 82.

[0066] In one embodiment, the wire through hole 119 is disposed in the middle of the water-cooled plate 11, and the first window 117 and the second window 118 are respectively located on both sides of the wire through hole 119. The width of the first window 117 is equal to or close to the bottom surface size of the first bottom plate 211, so that the coolant can almost contact the entire bottom surface of the first bottom plate 211, thereby increasing the heat exchange area. Similarly, the width of the second window 118 is equal to or close to the bottom surface size of the second bottom plate 221, so that the coolant can almost contact the entire bottom surface of the second bottom plate 221, thereby increasing the heat exchange area.

[0067] The controller 10 also includes a support column 12, which protrudes from the first side surface 115 of the water-cooled plate 11. The shielding plate 4 is fixed to one end of the support column 12 away from the water-cooled plate 11. A space is formed between the shielding plate 4 and the water-cooled plate 11. The power module 2 and the drive plate 5 are installed in the space. The drive plate 5 is installed between the power module 2 and the shielding plate 4 and is electrically connected to the power module 2, thereby realizing a fixed connection between the shielding plate 4, the power module 2 and the drive plate 5 and the water-cooled plate 11.

[0068] In one embodiment, the support column 12 is cylindrical, and one end of the support column 12 along the axial direction is fixed to the first side surface 115 of the water-cooling plate 11 , and the other end is a free end for connecting with the shielding plate 4 .

[0069] See also Figure 4-Figure 6 In one embodiment, the driving board 5 includes a first driving board 515 and a second driving board 525. The first driving board 515 is electrically connected to the first power module 21, so that the first driving board 515 can control the action performed by the first power module 21. The second driving board 525 is electrically connected to the second power module 22, so that the second driving board 525 can control the action performed by the second power module 22.

[0070] The first drive board 515 is located between the first power module 21 and the shielding plate 4, and the second drive board 525 is located between the second power module 22 and the shielding plate 4, which shortens the length of the electrical connection line between the first drive board 515 and the first power module 21, and shortens the length of the electrical connection line between the second drive board 525 and the second power module 22, making the overall structure of the controller 10 more neat and compact. Moreover, a shielding plate can simultaneously achieve magnetic field shielding between the first drive board and the control board, and between the second drive board and the control board, making the structure of the controller simpler.

[0071] In one embodiment, the filter 7 and the capacitor 3 are fixed to the second side 116 of the water-cooled plate 11 by screws, the power module 2 is fixed to the first side 115 of the water-cooled plate 11 by glue, screws or welding, the drive board 5 is fixed to the bottom plate of the power module 2 by screws, or the drive board 5 is fixed to the first side 115 of the water-cooled plate 11 by screws, the shielding plate 4 is fixed to the support column 12 by screws, and the control board 6 is fixed to the shielding plate 4 by screws, so that the controller 10 forms an integral whole, and the controller 10 can be fixed to the outer casing by connecting the water-cooled plate 11 to the outer casing.

[0072] In the above description, the driving board 5 is fixed to the bottom plate of the power module 2 by screws, which means that the first driving board 515 is fixed to the first bottom plate 211 by screws, and the second driving board 525 is fixed to the second bottom plate 221 by screws.

[0073] The control board 6 is electrically connected to the driving board 5 to realize the electrical signal interaction between the control board 6 and the driving board 5. The shielding plate 4 is a metal plate, and the control board 6 is located on the side of the shielding plate 4 away from the driving board 5, so that the control board 6 and the driving board 5 are shielded by the shielding plate 4, thereby avoiding magnetic interference between the control board 6 and the driving board 5, improving the accuracy and stability of the signal of the controller 10, and improving the service life of the controller 10.

[0074] There are two sets of wire harnesses 83 connected to the control board 6 , one set of wire harnesses 83 is used to connect the control board 6 with the first drive board 515 , and the other set of wire harnesses 83 is used to connect the control board 6 with the second drive board 525 .

[0075] There are multiple support columns 12, which are spaced around the water cooling plate 11 to support the shielding plate 4 in a balanced manner. Figure 7 In the illustrated embodiment, six support columns 12 are provided. In other embodiments, two, three, four or more support columns 12 are provided.

[0076] The support column 12 is integrally formed with the water-cooled plate 11 to form a bracket 1 for supporting the power module 2, the capacitor 3, the drive board 5, the shielding plate 4 and the control board 6. That is, the controller 10 of this embodiment is connected to the housing through the bracket 1 including the water-cooled plate 11 and the support column 12, and the power module 2, the capacitor 3, the drive board 5, the shielding plate 4 and the control board 6 are all fixed on the bracket 1, so that the controller 10 does not need to be provided with a controller housing, making the structure more compact and reducing the volume of the controller 10. In other embodiments, the support column 12 can also be fixed to the water-cooled plate 11 by screws.

[0077] In the above, the bracket 1 including the water-cooling plate 11 and the support column 12 reduces the skirt of the controller housing and reduces the volume and weight of the controller 10 compared with the existing controller housing. The plurality of support columns 12 are arranged at intervals, so that spaces for passing the first three-phase connector 81, the second three-phase connector 82 and the wiring harness 83 are formed between adjacent support columns 12, making the structure more compact.

[0078] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and the utility model concept of the utility model, and all these changes or substitutions should fall within the protection scope of the utility model.

Claims

1. A controller, characterized in that: include: A bracket, comprising a water-cooling plate and a support column, wherein the support column protrudes from a side surface of the water-cooling plate; A shielding plate, fixed to an end of the support column away from the water-cooling plate, with a space formed between the shielding plate and the water-cooling plate; A power module is fixed on the water cooling plate, and the power module is located in the space; A driving board, installed between the power module and the shielding plate, and electrically connected to the power module; A control board, fixedly connected to the shielding plate and located on a side of the shielding plate away from the driving board, wherein the control board is electrically connected to the driving board; A capacitor, the capacitor is fixed to the water cooling plate and is electrically connected to the power module; The filter is fixed on the water cooling plate and is electrically connected to the capacitor.

2. The controller according to claim 1, characterized in that: A plurality of support columns are provided, and the plurality of support columns are arranged at intervals and are all located outside the power module.

3. The controller according to claim 2, characterized in that: The support column is cylindrical, and one axial end of the support column is fixedly connected to a side surface of the water-cooled plate, and the other end is the free end of the support column, and the shielding plate is fixed on the free end of the support column; and / or the support column and the water-cooled plate are integrally formed.

4. The controller according to any one of claims 1 to 3, characterized in that: The water-cooling plate is in a flat plate shape, and includes a first side surface and a second side surface, the second side surface is arranged opposite to the first side surface, and the areas of the first side surface and the second side surface are larger than the areas of other side surfaces of the water-cooling plate; The water cooling plate is provided with a water inlet, a water outlet, a first channel and a second channel, one end of the first channel is connected to the water inlet, and the other end is connected to the water outlet, one end of the second channel is connected to the water inlet, and the other end is connected to the water outlet; A first window and a second window are provided on the first side surface, the first window is communicated with the first channel, and the second window is communicated with the second channel; The power module includes a first power module and a second power module, the first power module is mounted on the first window, and the second power module is mounted on the second window; The support column protrudes from the first side surface, and the capacitor and the filter are attached to the second side surface.

5. The controller according to claim 4, characterized in that: The first power module includes a first base plate and a first electrical component, wherein the first base plate is fixed on the water-cooling plate and seals the first window, and the first electrical component is fixed on a side of the first base plate away from the water-cooling plate; A plurality of first cooling needles are distributed on a side of the first bottom plate away from the first electrical component, and the plurality of first cooling needles pass through the first window and extend into the first channel; The second power module includes a second base plate and a second electrical component, the second base plate is fixed on the water-cooling plate and seals the second window, and the second electrical component is fixed on a side of the second base plate away from the water-cooling plate; A plurality of second cooling needles are distributed on a side of the second bottom plate away from the second electrical component. The plurality of second cooling needles pass through the second window and extend into the second channel.

6. The controller according to claim 4, characterized in that: A side of the first power module facing away from the second power module is an output end of the first power module, and a side of the second power module facing away from the first power module is an output end of the second power module; The controller further comprises: A first three-phase connector connected to an output end of the first power module; The second three-phase connector is connected to the output end of the second power module.

7. The controller according to claim 6, characterized in that: A side of the first power module close to the second power module is an input end of the first power module, a side of the second power module close to the first power module is an input end of the second power module, and both the input end of the first power module and the input end of the second power module are connected to the capacitor through wires; The water cooling plate is provided with a wire through hole between the first channel and the second channel, the wire through hole connects the first side surface and the second side surface, and the wires connecting the capacitor and the first power module and the wires connecting the capacitor and the second power module both pass through the wire through hole.

8. The controller according to claim 4, characterized in that: The driving board includes a first driving board and a second driving board, the first driving board is electrically connected to the first power module, and the second driving board is electrically connected to the second power module; The first driving board is located between the first power module and the shielding board, and the second driving board is located between the second power module and the shielding board.

9. A dual-motor drive device, characterized in that: include: The housing is formed with a motor installation cavity and a controller installation cavity; The motor comprises a first motor and a second motor, wherein the first motor and the second motor are both installed in the motor installation cavity; The controller according to any one of claims 1 to 8, mounted in the controller mounting cavity; The electrical connector includes a first electrical connector and a second electrical connector, wherein the first electrical connector is arranged between the first motor and the controller and is electrically connected to the first motor and the controller, and the second electrical connector is arranged between the second motor and the controller and is electrically connected to the second motor and the controller.

10. A vehicle, characterized in that: It comprises a vehicle body, wheels and the dual-motor drive device as claimed in claim 9, wherein the dual-motor drive device is fixed on the vehicle body, and the wheels are drivingly connected to the motors.

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