Motor controller and vehicle

Abstract

The present application discloses a motor controller, comprising: an upper housing and a lower housing assembled together, the lower housing comprising an upper cavity and a lower cavity separated by a partition plate; a transmission control processor, a control circuit board, a drive circuit board, a boost inductor, and a boost inductor water cooler for cooling the boost inductor, disposed between the partition plate of the upper and lower housings, wherein the control circuit board and the drive circuit board are separated by a shield plate to prevent mutual electromagnetic interference; and a main capacitor, an IGBT module, an IGBT module water cooler for cooling the IGBT module, a boost capacitor, and a current sensor, disposed in the lower cavity of the lower housing. The present application also relates to a vehicle including the motor controller.

Description

Technical Field

[0001] The present application relates to the field of new energy vehicles, and in particular to a motor controller and a vehicle including the motor controller. Background Art

[0002] As hybrid transmissions become increasingly powerful, their structures become more complex. However, the space available for the powertrain within a vehicle is limited. To achieve compactness, small, versatile components are increasingly popular within complex hybrid transmission architectures. Existing transmission motor controllers on the market are all self-contained products with a fixed design and form factor. This requires a large installation space and requires the transmission to be structurally compatible with the controller, hindering overall compactness and vehicle layout. Summary of the Invention

[0003] In view of this, embodiments of the present application provide a motor controller and a vehicle including the motor controller, thereby effectively solving the above-mentioned needs or alleviating at least one of the current disadvantages.

[0004] One aspect of the present application relates to a motor controller, comprising:

[0005] An upper shell and a lower shell assembled together, wherein the lower shell includes an upper cavity and a lower cavity separated by a partition plate;

[0006] A transmission control processor, a control circuit board, a drive circuit board, a boost inductor, and a boost inductor water cooler for cooling the boost inductor are disposed between the partition plate of the upper housing and the lower housing, wherein the control circuit board and the drive circuit board are separated by a shielding plate to prevent mutual electromagnetic interference; and

[0007] A main capacitor, an IGBT module, an IGBT module water cooler for cooling the IGBT module, a boost capacitor, and a current sensor are arranged in the lower cavity of the lower shell.

[0008] Optionally, in the motor controller, the lower shell is provided with a mounting structure for cooperating with the transmission shell, for mounting the lower shell to the transmission shell, so that the transmission shell becomes the bottom shell of the motor controller, and the lower cavity of the lower shell is located between the partition plate and the transmission shell.

[0009] Optionally, in the motor controller, four bolt mounting holes are respectively provided at the four corners of the lower housing for cooperating with bolts to achieve fixation between the lower housing and the transmission housing, and a radial sealing element is provided between the lower housing and the transmission housing.

[0010] Optionally, in the motor controller, the IGBT module is connected to the drive circuit board through the IGBT pin, the drive circuit board and the control circuit board are connected through board-to-board-to-plug-in, and the positive output terminal and the negative output terminal of the main capacitor are respectively connected to the positive input terminal and the negative input terminal of the IGBT module.

[0011] Optionally, in the motor controller, the IGBT module includes seven IGBTs, and the positive input terminals and the negative input terminals of the seven IGBTs are respectively welded to the positive output terminal and the negative output terminal of the main capacitor through a positive connecting copper bus and a negative connecting copper bus.

[0012] Optionally, the motor controller further includes a filter, the positive input terminal and the negative input terminal of the boost capacitor are respectively connected to the positive output terminal and the negative output terminal of the filter, the positive output terminal of the boost capacitor is connected to the positive input terminal of the main capacitor, the positive input terminal and the negative input terminal of the filter are connected to the high-voltage connector, and the negative output terminal of the filter is connected to the negative input terminal of the main capacitor.

[0013] Optionally, in the motor controller, the filter includes a filter housing, a connecting copper busbar, a grounding copper busbar, a magnetic ring and a filter capacitor, wherein the connecting copper busbar is connected to the filter capacitor and passes through the magnetic ring, and the grounding copper busbar is connected to the filter capacitor and led out to the filter housing to achieve grounding.

[0014] Optionally, the motor controller further includes a discharge resistor board, which is fixed on the main capacitor and connected to the temperature sensor of the main capacitor. The discharge resistor board is also connected to the control circuit board through an internal signal harness. The main capacitor includes a 3PIN pin for connecting to the discharge resistor board to collect voltage information of the main capacitor and transmit it to the control circuit board through the internal signal harness, so that the residual electrical energy of the main capacitor after the power of the entire vehicle is cut off when parking can be transmitted to the discharge resistor board through the 3PIN pin, and the residual electrical energy is released through resistive heating.

[0015] Optionally, in the motor controller, the input pins of the current sensor are respectively welded to the output terminals of the IGBT module, and the output pins of the current sensor are respectively connected to the three-phase line of the drive motor, the three-phase line of the generator and the boost inductor connection copper bus.

[0016] Optionally, in the motor controller, the control circuit board is connected to the current sensor through an internal signal harness, the control circuit board is also connected to the discharge resistor board through an internal signal harness, and is connected to the boost inductor temperature sensor through a harness connector, and the low-voltage signal connector of the control circuit board passes through the reserved hole of the upper shell and is led out of the upper shell.

[0017] Optionally, the motor controller further includes a power input harness fixed to the upper housing and a high-voltage connector fixed to the lower housing, and the power input harness is connected to the high-voltage connector.

[0018] Optionally, in the motor controller, the transmission control processor, the control circuit board, the boost inductor, and the boost inductor water cooler are located between the upper shell and the shielding plate, and the drive circuit board is located between the shielding plate and the partition plate of the lower shell.

[0019] Optionally, in the motor controller, the control circuit board and the drive circuit board are configured to be suitable for a dual-motor hybrid transmission.

[0020] Optionally, in the motor controller, the lower shell is formed with a water channel for introducing cooling water into the IGBT module water cooler and the boost inductor water cooler and leading it out.

[0021] Another aspect of the present application relates to a vehicle comprising the motor controller described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Exemplary embodiments of the present application are shown in the following drawings, in which like elements are denoted by like reference numerals, wherein:

[0023] Figure 1 is a perspective schematic diagram of an exemplary motor controller according to an embodiment of the present application;

[0024] Figure 2 yes Figure 1 A three-dimensional exploded schematic diagram of the motor controller shown;

[0025] Figure 3 It is roughly along Figure 1 A schematic longitudinal section of the central plane of the motor controller shows the assembly position of the parts in the upper cavity of the lower shell;

[0026] Figure 4 yes Figure 1 A schematic diagram of the relative position relationship of the internal circuit board connections of the motor controller shown;

[0027] Figure 5 yes Figure 1The IGBT module of the motor controller and its water cooler assembly diagram are shown;

[0028] Figure 6 yes Figure 1 A schematic diagram of the assembly of parts in the lower cavity of the lower housing of the motor controller shown;

[0029] Figure 7 yes Figure 6 A schematic diagram of the soldering of electronic components in the lower cavity parts shown; and

[0030] Figure 8 yes Figure 1 Schematic diagram of the assembly position of the boost circuit components of the motor controller shown.

[0031] Description of reference numerals:

[0032] 1 Upper housing 2 Hybrid transmission control processor

[0033] 3 Control circuit board 31 Inter-board plug-in male terminal

[0034] 32 Low voltage connector 4 Shielding plate

[0035] 5 Driver circuit board 51 Board to board female end

[0036] 6 Lower housing 61 Control circuit board hexagonal stud

[0037] 7 Vent plug 8 Main capacitor

[0038] 81 Discharge resistor board 82 3PIN pin

[0039] 83 Main capacitor temperature sensor 84 Main capacitor negative electrode connection copper busbar

[0040] 85 Main capacitor positive electrode connected to copper bus 9 IGBT module

[0041] 91 chip positive electrode 92 chip negative electrode

[0042] 93 Chip output terminal 94 IGBT module pin

[0043] 10 Current sensor 11 Power input harness

[0044] 12 Thermal pad 13 Boost inductor

[0045] 131 Boost Inductor Temperature Sensor 14 Thermal Pad

[0046] 15 Boost inductor water cooler 151 Boost inductor water cooler water inlet

[0047] 152 Boost inductor water cooler outlet 16 Internal signal harness

[0048] 17 Water pipe connector 18 2PIN high pressure connector sealing cover

[0049] 19 2PIN high voltage connector 20 boost capacitor

[0050] 21 Filter 22 IGBT module water cooler

[0051] 221 Water outlet of IGBT module water cooler 222 Water inlet of IGBT module water cooler

[0052] 223 Chip water cooler locking bolt. DETAILED DESCRIPTION

[0053] Some embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Unless otherwise clearly defined herein, the scientific and technical terms used herein have the meanings commonly understood by those skilled in the art.

[0054] As used herein, "including," "having," and similar words mean that in addition to the items listed thereafter and their equivalents, other items may also be within the scope. The terms "or" and "alternatively" do not mean exclusive, but rather mean that at least one of the mentioned items exists, and include situations where combinations of the mentioned items may exist. The term "and / or" includes any and all combinations of one or more of the mentioned items. References herein to "some embodiments" and the like indicate that a specific element (such as a feature, structure, and / or characteristic) related to the present application is included in at least one embodiment described in this specification and may or may not appear in other embodiments. In addition, it should be understood that the elements of the invention may be combined in any appropriate manner.

[0055] One aspect of the present application relates to a motor controller for a dual-motor hybrid transmission. Figure 1-8 An exemplary motor controller 100 is shown. Figure 1-3As shown, the motor controller 100 includes an upper housing 1 and a lower housing 6, which can be assembled together to form a complete housing. The housing can be a protective metal shell made of metal (e.g., aluminum). The joint surface between the upper housing 1 and the lower housing 6 can be a sealing surface. In some embodiments, during assembly, after the assembly of other parts relative to the housing is substantially complete, an automatic glue gun can be used to apply glue in a continuous linear manner to form a sealing rubber ring on the sealing surface of the lower housing 6. After the glue is applied, the upper and lower housings can be assembled and tightened with bolts. Under the pressure of the sealant, a uniform sealing surface is formed on the joint surface between the upper and lower housings, thereby substantially completing the assembly of the motor controller 100. The lower housing 6 can include an upper chamber 61 and a lower chamber 62 separated by a partition 60. Parts that are likely to cause electromagnetic interference and therefore require separate installation can be installed in the upper and lower chambers, respectively. For example, in the illustrated embodiment, the driver circuit board 5 can be installed in the upper chamber 61, while the IGBT module 9 can be installed in the lower chamber 62, thereby isolating the two to prevent electromagnetic interference.

[0056] Between the upper housing 1 and the lower housing 6—that is, between the upper housing 1 and the partition plate 60—are located the hybrid transmission control processor (HTCP) 2, the control circuit board 3, the drive circuit board 5, the boost inductor 13, and the boost inductor water cooler 15 for cooling the boost inductor 13. The circuitry within the control circuit board 3 and the drive circuit board 5 is designed to be suitable for use in a dual-motor hybrid transmission. A shielding plate 4 is positioned between the control circuit board 3 and the drive circuit board 5 to separate them and prevent mutual electromagnetic interference. The shielding plate 4 can be secured to the lower housing 6 using pins and bolts.

[0057] The control processor 2 can be mounted on the upper housing 1 via bolts. The low-voltage connector 201 on the control processor 2 may include a built-in sealing ring and can be inserted through a pre-determined hole 101 in the upper housing 1 and tightened with bolts. Once tightened, the sealing ring is compressed to achieve a seal. The low-voltage connector 32 on the control circuit board 3 includes a built-in sealing ring. When the upper and lower housings 1 and 6 are assembled, the connector 32 is inserted through a pre-determined hole 202 in the upper housing 1 and tightened with bolts. Once tightened, the sealing ring is compressed to achieve a seal.

[0058] A boost inductor 13 and a boost inductor water cooler 15 for cooling the boost inductor 13 are also located between the upper housing 1 and the lower housing 6. In the illustrated embodiment, the boost inductor 13 and the boost inductor water cooler 15 are also located between the upper housing 1 and the shielding plate 4, that is, on the same side of the shielding plate 4 as the control processor 2 and the control circuit board 3, but separate from the driver circuit board 5. A thermal pad 12 is located between the boost inductor 13 and the upper housing 1, and a thermal pad 14 is located between the boost inductor 13 and the heat dissipation surface of the boost inductor water cooler 15. The thermal pad 12 is placed on top of the boost inductor 13 before the upper and lower housings 1 and 6 are joined. After the upper and lower housings 1 and 6 are locked together, the thermal pad 12 is compressed, allowing the upper housing 1 to dissipate heat from the boost inductor 13. The thermal pad 14 is attached to the heat dissipation surface of the boost inductor water cooler 15 and then bolted to the boost inductor 13. After assembly, the thermal pad 14 is then mounted on the lower housing 6. During installation, the water inlet 151 of the boost inductor water cooler 15 and the water outlet 221 of the IGBT module water cooler 22 are aligned and installed. The two can be radially sealed with double O-rings and locked with bolts. Then, the boost inductor temperature sensor 131 is inserted into the control circuit board 3. When the upper shell 1 and the lower shell 6 are combined, the water outlet 152 of the boost inductor cooler 15 can pass through the reserved hole on the upper shell 1. The two can be radially sealed with double O-rings.

[0059] The driver circuit board 5 can be fixed to the lower housing 6 with pins and bolts. At this time, the pins 94 of the IGBT module 9 and the driver circuit board 5 are soldered with wave soldering. After the soldering is completed, the four hexagonal studs 61 of the control circuit board are installed on the lower housing 6. Then, the shielding plate 4 is installed on the lower housing 6 and locked with bolts. Figure 4 As shown, the male end 31 of the inter-board plug-in on the control circuit board 3 is aligned with the female end 51 of the inter-board plug-in on the driver circuit board 5 during assembly and inserted. The two can ensure the alignment of the inter-board plug-ins by sharing a positioning pin. At this time, the control circuit board 3 is locked on the hexagonal bolt column 61 of the control circuit board with bolts.

[0060] like Figure 1 and Figure 5 As shown, the IGBT module 9 has seven chips. After the chips are coated with thermal grease on both sides, they are sequentially installed into the gap of the IGBT module water cooler 22. The chips are adjustable in the water cooler. Figure 6As shown, the assembled parts are then installed on the lower shell 6, and the water inlet 222 of the IGBT module water cooler 22 is inserted into the water channel interface of the lower shell 6. The two are sealed with O-rings, and the water outlet 221 passes through the reserved hole of the upper and lower cavity partition plates of the lower shell 6. At this time, the auxiliary tooling can be installed on the lower shell 6, and the IGBT module pins 94 of the IGBT module 9 are adjusted to ensure that all are inserted into the auxiliary tooling. At this time, tighten the chip water cooler locking bolts 223, and press the IGBT module and water cooler to the lower shell 6, and then remove the auxiliary tooling. The main function of the auxiliary tooling is to ensure that all pins of the IGBT module 9 are correctly positioned to prepare for the subsequent assembly of the driver circuit board 5.

[0061] like Figure 6 As shown, the boost capacitor 20, filter 21, and main capacitor 8 are sequentially installed on the lower housing 6. The housings of the three parts are pre-cast with positioning pins for positioning with the lower housing 6 and fixed with bolts. After the three parts are installed on the lower housing 6 in sequence, the corresponding circuit terminals are aligned and the aligned terminals are tightened with bolts. The discharge resistor plate 81 is fixed to the main capacitor 8 with bolts. The 3-pin pins 82 of the main capacitor 8 and the discharge resistor plate 81 are soldered with wave solder. The main capacitor temperature sensor 83 is inserted into the discharge resistor plate 81 and transmits the collected temperature signal to the control board 3 through the internal signal harness 16 (see Figure 4 ). Figure 4 The internal signal harness 16 passes through the reserved hole on the partition plate 60 of the lower shell 6. One end connector of the harness 16 is connected to the control circuit board 3, and the other end connector is connected to the current sensor 10 and the discharge resistor board 81 respectively.

[0062] like Figure 7 As shown, the current sensor 10 is mounted on the lower housing 6 with pins and bolts. The current sensor 10 has seven copper busbar terminals, the input ends of which are respectively connected to the chip output terminals 93 of the seven chips of the IGBT module 9 by laser welding. Figure 5 and Figure 7 As shown, one end of the copper bus 85 connecting the positive electrode of the main capacitor is laser welded to the output positive electrode of the main capacitor 8, and the other end is divided into seven terminals, which are respectively laser welded to the chip positive electrode 91 of the IGBT module 9. The copper bus 84 connecting the negative electrode of the main capacitor is fixed to the main capacitor 8 with two screws, one end of which is laser welded to the output negative electrode of the main capacitor 8, and the other end is divided into seven terminals, which are respectively laser welded to the chip negative electrode 92 of the IGBT module 9.

[0063] like Figure 8As shown, the copper busbar 26 connecting the boost inductor is plastic-coated and has an integral plastic locating pin cast therein. The pin secures the busbar 26 to the lower housing 6. The busbar 26 passes through a pre-recorded hole in the partition plate 60 of the lower housing 6. One end of the busbar 26 is bolted to the current sensor 10. After the boost inductor 13 is installed, the other end is laser welded to one terminal of the boost inductor 13. The other terminal of the boost inductor 13 is bolted to a terminal of the boost capacitor 20.

[0064] like Figure 2 As shown, the water pipe joint 17 is sealed and connected to the lower shell 6 by pipe threads. The two vent plugs 7 can be installed into the corresponding interface positions on the lower shell 6 by directly pressing. The vent plug 7 can have its own sealing ring to form a sealed connection with the corresponding interface on the lower shell 6, which is used to help achieve the internal and external air pressure balance of the motor controller 100 and prevent water and / or dust from entering the interior of the motor controller 100. The 2PIN high-voltage connector 19 is installed from the square mounting hole on the side of the lower shell 6. The lower shell 6 has a limiting feature and is fixed with two bolts after being installed in place. The 2PIN high-voltage connector can be made by injection molding. It can have a plastic shell and two copper cores. The plastic shell has a through-hole for easy bolt installation and fixation. The two copper cores have threaded holes at both ends for easy connection with the parts at both ends.

[0065] The lower housing 6 may also be equipped with mounting structures for mating with the transmission housing (not shown), allowing the lower housing 6 to be attached to the transmission housing, thus forming the base housing of the motor controller 100. In some embodiments, four bolt mounting holes may be provided at each of the four corners of the lower housing 6 for receiving bolts to secure the lower housing 6 to the transmission housing. A radial sealing element may also be provided between the lower housing 6 and the transmission housing. In some embodiments, shock-absorbing bolts may be used to secure the lower housing 6 to the transmission housing, providing a vibration-absorbing effect. In some embodiments, a sealing ring may be provided between the lower housing 6 and the base housing (transmission housing), and shock-absorbing bolts may be used to secure the lower housing 6 to the base housing. The power input wiring harness 11 is then bolted to the upper housing 1. The power input wiring harness 11 is then connected to the 2-pin high-voltage connector 19 through the reserved mounting holes on the side of the lower housing 6, connecting the vehicle battery to the motor controller. The 2-pin high-voltage connector sealing cover 18 is then bolted to the lower housing 6, sealing the reserved mounting holes.

[0066] exist Figure 2 and Figure 3It can be seen that the control processor 2, the control circuit board 3, the drive circuit board 5, the boost inductor 13 and the boost inductor water cooler 15 are arranged between the partition plate 60 of the upper shell 1 and the lower shell 6, while the main capacitor 8, the IGBT module 9, the IGBT module water cooler 22, the current sensor 10 and the boost capacitor 21 are all arranged in the lower cavity 62 of the lower shell 6, that is, between the partition plate 60 of the lower shell 6 and the bottom shell (transmission housing).

[0067] Another aspect of the present application relates to a vehicle comprising the motor controller. Based on the above disclosure, a person skilled in the art can easily obtain a vehicle comprising the motor controller of the present application.

[0068] When the vehicle needs to be driven by an electric motor, the voltage provided by the vehicle power supply is increased by the boost and voltage stabilization circuit inside the motor controller 100, and the DC power is converted into AC power through the IGBT module 9 to power the drive motor inside the transmission, so that the vehicle can obtain greater power; when the vehicle engine is cruising in a high-efficiency range or braking, the excess kinetic energy is converted into AC power through the generator, and the AC power is converted into DC power through the IGBT module 9. At this time, the motor controller 100 will decide whether to use the generator's electricity to charge the vehicle power supply or directly supply the drive motor according to the performance requirements of the vehicle.

[0069] In the embodiment of this application, the controllers for the drive motor and generator are integrated into a single motor controller 100 for a dual-motor inverter. This controller is then integrated into the transmission, allowing for shared components, reducing the number of parts and lowering costs. Structurally, the controller and the transmission share a common housing, integrating the two into one. This cleverly utilizes the complex external space of the transmission housing to arrange the controller components, reducing the controller's size and mass, enabling a single motor controller to simultaneously control both the drive motor and the generator. This application also integrates the hybrid transmission control processor into the motor controller, further reducing the overall size of the transmission and improving the adaptability of the powertrain system within the vehicle's overall layout, enabling the powertrain system to be compatible with a wider range of vehicle platforms.

[0070] The embodiments of the present application solve at least one of the problems of existing motor controllers, such as large size, poor adaptability, complex structure, and high cost. Compared with the prior art, the motor controller 100 in the embodiments of the present application is not only simple in structure, small in size, light in weight, wide in current range, and good in adaptability, but also can be boosted, achieving the purpose of high voltage control and improving the power density of the motor controller. It can also reversely charge the battery of the entire vehicle, realizing the recycling and reuse of brake energy, and reducing the fuel consumption of the entire vehicle. In addition, the series internal cooling circulation path simplifies the cooling structure, reduces the risk of leakage in the cooling system, and at the same time realizes priority cooling of IGBT modules with high heat dissipation requirements, centralized cooling, and good cooling effect, meeting the cooling requirements while simplifying the structure and reducing costs.

[0071] The above specific implementation methods are used to explain the present application rather than to limit the present application. Any modifications and changes made to the present application within the spirit of the present application and the protection scope of the claims shall fall within the protection scope of the present application.

Claims

1. A motor controller, characterized in that: It includes: An upper shell and a lower shell assembled together, wherein the lower shell includes an upper cavity and a lower cavity separated by a partition plate; A transmission control processor, a control circuit board, a drive circuit board, a boost inductor, and a boost inductor water cooler for cooling the boost inductor are disposed between the partition plate of the upper housing and the lower housing, wherein the control circuit board and the drive circuit board are separated by a shielding plate to prevent mutual electromagnetic interference; and A main capacitor, an IGBT module, an IGBT module water cooler for cooling the IGBT module, a boost capacitor, and a current sensor are arranged in the lower cavity of the lower housing; The input pins of the current sensor are respectively welded to the output terminals of the IGBT module, and the output pins of the current sensor are respectively connected to the three-phase wires of the drive motor, the three-phase wires of the generator and the boost inductor connection copper bus.

2. The motor controller according to claim 1, characterized in that: The lower shell is provided with a mounting structure for cooperating with the transmission shell, for mounting the lower shell to the transmission shell so that the transmission shell becomes the bottom shell of the motor controller, and the lower cavity of the lower shell is located between the partition plate and the transmission shell.

3. The motor controller according to claim 2, characterized in that: Four bolt mounting holes are respectively provided at the four corners of the lower housing for cooperating with bolts to achieve fixation between the lower housing and the transmission housing. A radial sealing element is provided between the lower housing and the transmission housing.

4. The motor controller according to claim 1, wherein: The IGBT module is connected to the driving circuit board through the IGBT pin, the driving circuit board and the control circuit board are connected through board-to-board-to-plug-in, and the positive output terminal and the negative output terminal of the main capacitor are respectively connected to the positive input terminal and the negative input terminal of the IGBT module.

5. The motor controller according to claim 4, characterized in that: The IGBT module includes seven IGBTs, and the positive input terminals and the negative input terminals of the seven IGBTs are respectively welded to the positive output terminal and the negative output terminal of the main capacitor through a positive electrode connecting copper busbar and a negative electrode connecting copper busbar.

6. The motor controller according to claim 1, characterized in that: It further includes a filter, the positive input terminal and the negative input terminal of the boost capacitor are respectively connected to the positive output terminal and the negative output terminal of the filter, the positive output terminal of the boost capacitor is connected to the positive input terminal of the main capacitor, the positive input terminal and the negative input terminal of the filter are connected to the high-voltage connector, and the negative output terminal of the filter is connected to the negative input terminal of the main capacitor.

7. The motor controller according to claim 6, characterized in that: The filter includes a filter housing, a connecting copper busbar, a grounding copper busbar, a magnetic ring and a filter capacitor, wherein the connecting copper busbar is connected to the filter capacitor and passes through the magnetic ring, and the grounding copper busbar is connected to the filter capacitor and led out to the filter housing to achieve grounding.

8. The motor controller according to claim 1, wherein: It further includes a discharge resistor plate, which is fixed on the main capacitor and connected to the temperature sensor of the main capacitor. The discharge resistor plate is also connected to the control circuit board through an internal signal harness. The main capacitor includes 3PIN pins, which are used to connect to the discharge resistor plate to collect voltage information of the main capacitor and transmit it to the control circuit board through the internal signal harness, so that the residual electric energy of the main capacitor after the power of the entire vehicle is cut off when parking can be transmitted to the discharge resistor plate through the 3PIN pins, and the residual electric energy is released through resistive heating.

9. The motor controller according to claim 1, characterized in that: The control circuit board is connected to the current sensor through an internal signal harness. The control circuit board is also connected to the discharge resistor board through an internal signal harness, and is connected to the boost inductor temperature sensor through a harness connector. The low-voltage signal connector of the control circuit board passes through the reserved hole of the upper shell and is led out of the upper shell.

10. The motor controller according to claim 1, wherein: It further comprises a power input harness fixed to the upper shell and a high-voltage connector fixed to the lower shell, wherein the power input harness is connected to the high-voltage connector.

11. The motor controller according to claim 1, wherein: The transmission control processor, the control circuit board, the boost inductor, and the boost inductor water cooler are located between the upper housing and the shielding plate, and the drive circuit board is located between the shielding plate and the partition plate of the lower housing.

12. The motor controller according to claim 1, wherein: The control circuit board and the drive circuit board are configured to be suitable for a dual-motor hybrid transmission.

13. The motor controller according to claim 1, wherein: The lower housing is formed with a water channel for introducing cooling water into the IGBT module water cooler and the boost inductor water cooler and leading it out.

14. A vehicle, characterized in that: It comprises a motor controller according to any one of claims 1 to 13.

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