Motor controller, driving system and vehicle

Abstract

The utility model relates to a motor controller, a driving system and a vehicle, the motor controller comprises a shell, a direct current module, an inversion module, an electric connecting piece and two partition plates, the shell comprises an inner cavity, the two partition plates are fixed in the inner cavity and are spaced from each other, and the direct current module and the inversion module are fixed to the two opposite sides of the two partition plates respectively; the electric connecting piece is electrically connected with the direct current module and the inversion module; and the two partition plates are electromagnetic shielding pieces. The partition plate of the motor controller can separate the magnetic field generated after the direct current module and the inversion module are powered on, electromagnetic interference of the magnetic field on the direct current module and the inversion module is reduced, and normal work of the direct current module and the inversion module is prevented from being affected by an overlarge magnetic field.

Description

Technical Field

[0001] The present application relates to the field of motor controllers, and particularly to a motor controller, a drive system, and a vehicle. Background Art

[0002] The motor controller is electrically connected to the motor, and the motor controller is used to control the motor and supply power to the motor.

[0003] When the motor controller works, the modules inside are powered on to generate a magnetic field, which causes mutual interference among the modules inside the motor controller, affects its normal operation, and even overloads the circuit and damages it. Summary of the Utility Model

[0004] In view of the above technical problems, the purpose of the present application is to provide a motor controller with anti-electromagnetic interference, a drive system including the above motor controller, and a vehicle including the above motor controller or the above drive system. Specifically, the technical solutions are as follows:

[0005] In a first aspect, an embodiment of the present application provides a motor controller, which includes a housing, a DC module, an inverter module, an electrical connection member, and two partition plates. The housing includes an inner cavity. The two partition plates are fixed in the inner cavity and spaced apart from each other. The DC module and the inverter module are respectively fixed on two opposite sides of the two partition plates. The electrical connection member electrically connects the DC module and the inverter module; the two partition plates are electromagnetic shielding members.

[0006] The motor controller of the present application includes a DC module and an inverter module. The DC module and the inverter module are conducted through the electrical connection member. The DC module inputs direct current to the inverter module, and the inverter module converts the direct current into alternating current and then outputs it.

[0007] The motor controller of the present application includes two partition plates. The DC module and the inverter module are respectively located on two opposite sides of the two partition plates, and the two partition plates are electromagnetic shielding members. The partition plates can separate the magnetic fields generated after the DC module and the inverter module are powered on, reduce the electromagnetic interference of the magnetic fields between the DC module and the inverter module, and prevent the excessive magnetic field from affecting the normal operation of the DC module and the inverter module.

[0008] In one embodiment, the two partition plates include a first partition plate and a second partition plate. The second partition plate is located on the side of the first partition plate facing the DC module. Along a first direction, the size of the second partition plate is greater than or equal to the size of the first partition plate. The first direction is perpendicular to the arrangement direction of the first partition plate and the second partition plate.

[0009] In one embodiment, a second direction is perpendicular to the first direction. Along the second direction, the projection of the DC module on the plane where the second partition plate is located is located within the second partition plate; and / or along the second direction, the projection of the inverter module on the plane where the first partition plate is located is located within the first partition plate.

[0010] In this embodiment, along the second direction, the area of the second partition is greater than the projected area of the DC module and / or the area of the first partition is greater than the projected area of the inverter module, so that the first partition and the second partition can separate the DC module and the inverter module, avoiding the magnetic field generated by one of the DC module and the inverter module from affecting the other, reducing the electromagnetic interference received by the DC module and the inverter module, and preventing the excessive magnetic field from affecting the normal operation of the DC module and the inverter module.

[0011] In one embodiment, the first partition and the second partition divide the inner cavity into three relatively independent sub-cavities. The DC module and the inverter module are respectively located in two sub-cavities on opposite sides of the two partitions, and at least part of the electrical connectors are located in the sub-cavity between the two partitions.

[0012] In one embodiment, the sub-cavity includes a first sub-cavity for accommodating the DC module, where: the first sub-cavity includes a first part and a second part, the first part and the second part are arranged along a third direction, the third direction is perpendicular to the first direction and the second direction respectively, the first part is located on the side of the second partition away from the first partition, and the second part extends towards the outside of the first part, and the extending direction of the second part intersects with the third direction.

[0013] In one embodiment, the sub-cavity includes a second sub-cavity located on the side of the first partition away from the second partition, and the second sub-cavity is used for accommodating the inverter module.

[0014] In one embodiment, the motor controller includes an input end and an output end, the input end and the output end respectively extend into different sub-cavities and are electrically connected to the DC module and the inverter module respectively, so as to convert the input DC current into the output AC current.

[0015] In this embodiment, the input end of the motor controller is communicated with the sub-cavity where the DC module is located and is electrically connected to the DC module; the output end is communicated with the sub-cavity where the inverter module is located and is electrically connected to the inverter module. After a DC current is input at the input end of the motor controller, the motor controller can convert the DC current into an AC current and output the AC current through the output end.

[0016] In one embodiment, the motor controller includes a magnetic sheath that surrounds the outside of the DC module for reducing the electromagnetic interference received by the DC module; and / or the magnetic sheath surrounds the outside of the electrical connector for reducing the electromagnetic interference received by the electrical connector.

[0017] In this embodiment, the magnetic sheath surrounds the outside of the DC module and / or the outside of the electrical connector, and the magnetic field generated by the magnetic sheath will form a closed loop, and the closed loop can block the external magnetic field, thereby reducing the electromagnetic interference and ensuring the stable operation of the DC module and / or the electrical connector in the electromagnetic environment.

[0018] In one embodiment, a magnetic sheath surrounds the outside of the DC module. Along the second direction, the projection of the magnetic sheath on the plane where the second partition is located is within the second partition.

[0019] In this embodiment, a magnetic sheath surrounds the outside of the DC module. The magnetic field generated by the magnetic sheath will affect the normal operation of the inverter module. The area of the second partition is larger than the projection area of the magnetic sheath, so that the second partition can separate the magnetic sheath and the inverter module, avoiding the magnetic field generated by the magnetic sheath from affecting the operation of the inverter module and reducing the electromagnetic interference received by the inverter module.

[0020] In one embodiment, a magnetic sheath surrounds the outside of the electrical connection member and is located between two partitions. Along the second direction, the projection of the magnetic sheath on the plane where the first partition is located is within the first partition.

[0021] In this embodiment, a magnetic sheath surrounds the outside of the electrical connection member. Part of the electrical connection member is located between the first partition and the second partition. The magnetic field generated by the magnetic sheath will affect the normal operation of the inverter module. The area of the first partition is larger than the projection area of the magnetic sheath, which can reduce the interference of the magnetic sheath on the inverter module.

[0022] In one embodiment, the first partition is provided with a first hollow, and the second partition is provided with a second hollow. The two ends of the electrical connection member respectively pass through the first hollow and the second hollow to conduct the inverter module and the DC module respectively. Along the second direction, the projection of the first hollow on the plane where the second partition is located is spaced apart from the second hollow.

[0023] In a second aspect, the present application further provides a drive system, including a drive motor and the above-mentioned motor controller. The drive motor is electrically connected to the inverter module of the motor controller for supplying power to drive the motor.

[0024] In a third aspect, the present application further provides a vehicle, including a drive motor and the above-mentioned motor controller. The drive motor is electrically connected to the inverter module of the motor controller for supplying power to drive the motor; or including the above-mentioned drive system.

[0025] It can be understood that because the drive system and the vehicle of the present application adopt the above-mentioned motor controller, they have better anti-electromagnetic interference ability and can operate normally in a complex electromagnetic environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic structural diagram of a motor controller provided in an embodiment of the present application;

[0027] Figure 2 It is a partial structural schematic diagram of a motor controller provided in an embodiment of the present application;

[0028] Figure 3 Schematic topology diagram of a drive system provided in an embodiment of the present application;

[0029] Figure 4 Partial structural schematic diagram of a motor controller provided in another embodiment of the present application;

[0030] Figure 5 Partial structural schematic diagram of a motor controller provided in an embodiment of the present application;

[0031] Figure 6 Another partial structural schematic diagram of a motor controller provided in an embodiment of the present application. Detailed implementation manners

[0032] To facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0033] The descriptions of the following embodiments refer to the attached drawings to illustrate specific embodiments in which the present application can be implemented. The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. The terms "connection" and "coupling" used in the present application, unless otherwise specified, include both direct and indirect connections (couplings). The directional terms mentioned in the present application, such as "up", "down", "front", "rear", "left", "right", "inside", "outside", "side", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms are used to better and more clearly illustrate and understand the present application, 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 thus should not be construed as a limitation to the present application.

[0034] The present application provides a drive system. The drive system includes a motor and a motor controller. The motor controller is electrically connected to the drive motor. The motor controller can supply power to the drive motor to ensure the normal operation of the motor. At the same time, the motor controller can also control parameters such as the start / stop, speed, and rotation direction of the drive motor, facilitating the user to control the operation of the drive motor through the motor controller.

[0035] Please refer to Figure 1 and Figure 2 , wherein, Figure 1 Schematic diagram showing the structure of the motor controller 100 provided in an embodiment of the present application; Figure 2 Schematic diagram showing a partial structure of the motor controller 100 provided in an embodiment of the present application.

[0036] The motor controller 100 of the present application includes a housing 10, a DC module 20, an inverter module 30, an electrical connection member 50, and two partition plates 40. The housing 10 includes an inner cavity 11. The two partition plates 40 are fixed in the inner cavity 11 and spaced apart from each other. The DC module 20 and the inverter module 30 are respectively fixed on the opposite sides of the two partition plates 40.

[0037] Specifically, in one embodiment, as Figure 2 shown, a first partition plate 41 and a second partition plate 42 are fixed in the inner cavity 11. The first partition plate 41 and the second partition plate 42 divide the inner cavity 11 into a first sub-cavity 12 and a second sub-cavity 13. Please refer to Figure 1 shown, the DC module 20 and the inverter module 30 are respectively located on the opposite sides of the first partition plate 41 and the second partition plate 42, that is, the DC module 20 is located in the first sub-cavity 12, and the inverter module 30 is located in the second sub-cavity 13.

[0038] The electrical connection member 50 of the motor controller 100 of the present application electrically connects the DC module 20 and the inverter module 30. The two partition plates 40 are electromagnetic shielding members for reducing electromagnetic interference between the DC module 20 and the inverter module 30.

[0039] Specifically, in one embodiment, as Figure 1 shown, one end of the electrical connection member 50 is located in the first sub-cavity 12 and is electrically connected to the DC module 20. The other end extends along the arrangement direction parallel to the first partition plate 41 and the second partition plate 42, passes through the first partition plate 41 and the second partition plate 42 in sequence, and is electrically connected to the inverter module 30 in the second sub-cavity 13, so that the DC module 20 and the inverter module 30 are electrically connected.

[0040] The motor controller 100 of the present application includes a DC module 20, an inverter module 30, and an electrical connection member 50. The electrical connection member 50 is electrically connected between the DC module 20 and the inverter module 30, so that the DC current in the DC module 20 can be conducted to the inverter module 30 through the electrical connection member 50. The inverter module 30 converts the received DC current into an AC current and outputs the AC current. The motor controller 100 of the present application is used to convert DC current into AC current, and further provide AC current for other electrical devices.

[0041] The motor controller 100 of the present application includes two partition plates 40. The two partition plates 40 separate the DC module 20 from the inverter module 30, and the two partition plates 40 are electromagnetic shielding parts. The two partition plates 40 can shield the magnetic fields generated by the DC module 20 and the inverter module 30, avoiding the magnetic field generated by the DC module 20 from affecting the normal operation of the inverter module 30 in the second sub-chamber 13, and at the same time can avoid the magnetic field generated by the inverter module 30 from affecting the normal operation of the DC module 20 in the first sub-chamber 12, thereby reducing the electromagnetic interference between the DC module 20 and the inverter module 30.

[0042] The two partition plates 40 of the motor controller 100 of the present application are spaced apart from each other. Other components can be placed in the space between the two partition plates 40, improving the space utilization rate of the inner cavity 11; at the same time, the two spaced-apart partition plates 40 can improve their ability to resist electromagnetic interference, so as to reduce the electromagnetic interference between the DC module 20 and the inverter module 30.

[0043] It can be understood that in some embodiments, increasing the distance between the two partition plates 40 can improve the electromagnetic interference resistance ability of the two partition plates 40, and further reduce the electromagnetic interference between the DC module 20 and the inverter module 30.

[0044] Please refer to Figure 3 the topological schematic diagram of the drive system 200 provided in an embodiment of the present application shown schematically.

[0045] The drive system 200 of the present application includes a drive motor 110 and the above-mentioned motor controller 100. The drive motor 110 is electrically connected to the inverter module 30 of the motor controller 100 for driving the power supply of the motor 110.

[0046] Specifically, in one embodiment, as Figure 3 shown, the drive system 200 includes a motor controller 100 and a drive motor 110. The output end of the motor controller 100 outputs an alternating current, and the output end is electrically connected to the drive motor 110 to realize the normal operation of the drive motor 110.

[0047] In one embodiment, as Figure 3 shown, the drive system 200 further includes a control chip 120. The control chip 120 is electrically connected to the motor controller 100 and the drive motor 110 respectively for controlling the motor controller 100 and the drive motor 110. In another embodiment, the control chip 120 can also be arranged in the motor controller 100 to improve the integration degree of the drive system 200.

[0048] At the same time, the housing 10 of the motor controller 100 of the drive system 200 of the present application can be fixed on the drive motor 110 to improve the integration degree of the drive system 200, thereby reducing the occupied space of the drive system 200 of the present application.

[0049] In some other embodiments, the drive system 200 includes a drive motor 110, a speed reducer, and a motor controller 100. The output shaft of the drive motor 110 is in transmission connection with the speed reducer. The motor controller 100 can also be fixed to the speed reducer to improve the integration degree of the drive system 200 and can also reduce the occupied space of the drive system 200.

[0050] It can be understood that the change of the current in the DC module 20, the inverter module 30 or other circuits of the drive system 200 will generate electromagnetic interference. The electromagnetic interference will affect the current in the circuit, generating surge current and spike voltage. The changing current easily causes the components in the drive system 200 to fail to work properly, and even damages the drive motor 110 due to circuit overload.

[0051] The motor controller 100 of the present application improves the electromagnetic interference resistance of the DC module 20 and the inverter module 30, avoids the electromagnetic interference between the DC module 20 and the inverter module 30, reduces the probability of surge current and spike voltage appearing in the circuit of the drive system 200, and thus protects the normal operation of the drive system 200.

[0052] It should be noted that the motor controller 100 of the present application can not only be applied in the drive system 200, but also be applicable in other systems or devices that need to provide current. Compared with other motor controllers, the motor controller 100 of the present application has higher electromagnetic interference resistance, can reduce the probability of surge current and spike voltage appearing in the circuit of the system or device, and thus protects the normal operation of the system or device.

[0053] The present application also provides a vehicle. The vehicle includes a drive motor 110 and the above-mentioned motor controller 100. The drive motor 110 is electrically connected to the inverter module 30 of the motor controller 100 for supplying power to drive the motor 110; or includes the above-mentioned drive system 200.

[0054] It can be understood that in addition to being applied to the above-mentioned vehicle, the drive system 200 of the present application can also be applied to other devices that need to be driven. And because the drive system 200 and the vehicle of the present application adopt the motor controller 100, they have better electromagnetic interference resistance.

[0055] In one embodiment, the two partition plates 40 include a first partition plate 41 and a second partition plate 42. The second partition plate 42 is located on the side of the first partition plate 41 facing the DC module 20. Along the first direction 001, the size of the second partition plate 42 is larger than that of the first partition plate 41. The first direction 001 is perpendicular to the arrangement direction of the first partition plate 41 and the second partition plate 42. Along the first direction 001, the size of the second partition plate 42 is larger than that of the first partition plate 41, that is, the height of the second partition plate 42 is greater than or equal to the height of the first partition plate 41 to reduce the electromagnetic interference received by the DC module 20.

[0056] In one embodiment, the second direction 002 is perpendicular to the first direction 001. Along the second direction 002, the projection of the DC module 20 on the plane where the second partition plate 42 is located is located within the second partition plate 42. The area of the second partition plate 42 is larger than the projection area of the DC module 20, so that the second partition plate 42 can shield the DC module 20 to separate the DC module 20 and the inverter module 30, avoiding the magnetic field generated by the inverter module 30 from affecting the DC module 20, thereby reducing the electromagnetic interference received by the DC module 20 and preventing the magnetic field from affecting the normal operation of the DC module 20.

[0057] In one embodiment, along the second direction 002, the projection of the inverter module 30 on the plane where the first partition plate 41 is located is located within the first partition plate 41. The area of the first partition plate 41 is larger than the projection area of the inverter module 30, so that the first partition plate 41 can shield the inverter module 30 to separate the DC module 20 and the inverter module 30, avoiding the magnetic field generated by the DC module 20 from affecting the inverter module 30, thereby reducing the electromagnetic interference received by the inverter module 30 and preventing the magnetic field from affecting the normal operation of the inverter module 30.

[0058] In one embodiment, the first partition plate 41 and the second partition plate 42 divide the inner cavity 11 into three relatively independent sub-cavities. The DC module 20 and the inverter module 30 are respectively located in two sub-cavities on the opposite sides of the two partition plates, and at least part of the electrical connectors 50 are located in the sub-cavity between the two partition plates 40. In a preferred embodiment, as Figure 1 shown, the first partition plate 41 divides the inner cavity 11 into a first sub-cavity 12 and a second sub-cavity 13. The DC module 20 is respectively located in the first sub-cavity 12 and the second sub-cavity 13, and can also separate the DC module 20 and the inverter module 30, thereby reducing the electromagnetic interference received by the DC module 20 and the inverter module 30 and preventing an excessive magnetic field from affecting the normal operation of the DC module 20 and the inverter module 30.

[0059] It can be understood that compared with the area of the first partition plate 41 being larger than the projection area of the DC module 20 and / or the inverter module 30, the first partition plate 41 dividing the inner cavity 11 into two relatively independent sub-cavities to separate the DC module 20 and the inverter module 30 has better electromagnetic interference resistance.

[0060] Please refer to Figure 4 A partial structural schematic diagram of the motor controller 100 provided in another embodiment of the present application shown schematically.

[0061] In one embodiment, as Figure 4 shown, the sub-chamber includes a first sub-chamber 12 for accommodating the DC module 20. The first sub-chamber 12 includes a first part 121 and a second part 122. Please refer to Figure 1 , the first part 121 and the second part 122 are arranged along the third direction 003, and the third direction 003 is perpendicular to the first direction 001 and the second direction 002 respectively. The first part 121 is located on the side of the second partition 42 away from the first partition 41, and the second part 122 extends towards the outside of the first part 121, and the extension direction of the second part 122 intersects with the third direction 003.

[0062] Please refer to Figure 5 and Figure 6 , wherein Figure 5 shows a partial structural schematic diagram of the motor controller 100 provided in one embodiment of the present application; Figure 6 shows another partial structural schematic diagram of the motor controller 100 provided in one embodiment of the present application.

[0063] In one embodiment, as Figure 5 and Figure 6 shown, the motor controller 100 includes an input terminal 81 and an output terminal 82. The input terminal 81 is fixed on the side of the first partition 41 facing the DC module 20, and the output terminal 82 is fixed on the side of the first partition 41 facing the inverter module 30. The input terminal 81 of the motor controller 100 is located on one side of the DC module 20, facilitating the electrical connection between the input terminal 81 and the DC module 20 to conduct the external power supply and the DC module 20; the output terminal 82 is located on one side of the inverter module 30, facilitating the electrical connection between the output terminal 82 and the inverter module 30 to conduct the electrical equipment and the inverter module 30, and separating the input terminal 81 and the output terminal 82.

[0064] In one embodiment, as Figure 1 , Figure 5 and Figure 6As shown in the figure, the first partition 41 divides the inner cavity 11 into a first sub-cavity 12 and a second sub-cavity 13. The input end 81 is communicated with the first sub-cavity 12 and is electrically connected to the DC module 20 in the first sub-cavity 12. The output end 82 is communicated with the second sub-cavity 13 and is electrically connected to the inverter module 30 in the second sub-cavity 13. After a DC current is input at the input end 81 of the motor controller 100, the motor controller 100 can convert the DC current into an AC current and output the AC current through the output end 82. Connecting the input end 81 and the output end 82 to different sub-cavities respectively can also separate the input end 81 and the output end 82, avoiding the magnetic field generated by the DC current in the input end 81 from interfering with the magnetic field generated by the AC current in the output end 82.

[0065] In one embodiment, as Figure 4 and Figure 5 shown, the first part 121 is used to accommodate the DC module 20, and the second part 122 is used to accommodate the input end 81 of the motor controller 100. The input end 81 extends into the second part 122 along the extending direction of the second part 122 and is electrically connected to the DC module 20 to input a DC current to the DC module 20. It can be understood that the bent second part 122 facilitates the installation of the input end 81 and can reduce the occupied space of the motor controller 100.

[0066] In one embodiment, as Figure 5 shown, the motor controller 100 includes a magnetic sheath 60. The magnetic sheath 60 surrounds the outside of the DC module 20 and is used to reduce the electromagnetic interference received by the DC module 20.

[0067] In another embodiment, the magnetic sheath 60 surrounds the outside of the electrical connection member 50 and is used to reduce the electromagnetic interference received by the electrical connection member 50.

[0068] It can be understood that the magnetic field generated by the magnetic sheath 60 will form a closed loop. The closed loop can block the external magnetic field, thereby reducing the electromagnetic interference and ensuring the stable operation of the DC module 20 and the electrical connection member 50 in the electromagnetic environment.

[0069] In a preferred embodiment, the motor controller 100 includes a plurality of magnetic sheaths 60. The magnetic sheaths 60 surround the outside of the DC module 20 and the outside of the electrical connection member 50.

[0070] In another preferred embodiment, a part of the magnetic sheaths 60 of the motor controller 100 surround the outside of the DC module 20, and another part of the magnetic sheaths 60 surround the outside of the electrical connection member 50.

[0071] In the above preferred embodiments, the magnetic sheath 60 can block the external magnetic field for the DC module 20 and the electrical connection member 50 to reduce the electromagnetic interference received by the DC module 20 and the electrical connection member 50.

[0072] It can be understood that the magnetic sheath 60 can reduce the electromagnetic interference received by the DC module 20 and the electrical connection member 50, but the magnetic field generated by the magnetic sheath 60 will affect the normal operation of the inverter module 30 and the alternating current in the output circuit of the inverter module 30.

[0073] In one embodiment, along the second direction 002, the projection of the magnetic sheath 60 on the plane of the second partition 42 is located within the second partition 42. The area of the second partition 42 is larger than the projection area of the magnetic sheath 60, and the magnetic sheath 60 and the inverter module 30 can be separated by the second partition 42, thereby avoiding the magnetic field generated by the magnetic sheath 60 from affecting the operation of the inverter module 30 and reducing the electromagnetic interference received by the inverter module 30.

[0074] In one embodiment, the magnetic sheath 60 is disposed around the outside of the electrical connection member 50 and is located between the two partitions 40. Along the second direction 002, the projection of the magnetic sheath 60 on the plane of the first partition 41 is located within the first partition 41. The area of the first partition 41 is larger than the projection area of the magnetic sheath 60, and the magnetic sheath 60 and the inverter module 30 can be separated by the first partition 41, thereby avoiding the magnetic field generated by the magnetic sheath 60 from affecting the inverter module 30 and reducing the electromagnetic interference received by the inverter module 30.

[0075] In another embodiment, along the second direction 002, the projection of the inverter module 30 on the plane of the first partition 41 is located within the first partition 41, which can also reduce the electromagnetic interference received by the inverter module 30 from the magnetic sheath 60.

[0076] In one embodiment, when the magnetic sheath 60 is disposed around the outside of the electrical connection member 50 and is located between the two partitions 40, along the second direction 002, the projection of the magnetic sheath 60 on the plane of the second partition 42 is located within the second partition 42. The area of the second partition 42 is larger than the projection area of the magnetic sheath 60, and the magnetic sheath 60 and the DC module 20 can be separated by the second partition 42, thereby avoiding the magnetic field generated by the magnetic sheath 60 from affecting the DC module 20 and reducing the electromagnetic interference received by the DC module 20.

[0077] In another embodiment, along the second direction 002, the projection of the DC module 20 on the plane of the second partition 42 is located within the second partition 42, which can also reduce the electromagnetic interference received by the DC module 20 from the magnetic sheath 60.

[0078] It should be noted that, as a component for improving the electromagnetic interference resistance of the DC circuit, the magnetic field of the magnetic sheath 60 will interfere with the inverter module 30 and the alternating current. Separating the inverter module 30 and the magnetic sheath 60 by the second partition 42 can improve the electromagnetic interference resistance of the inverter module 30.

[0079] In one embodiment, the first partition 41 is provided with a first hollow 411, and the second partition 42 is provided with a second hollow 421. Two ends of the electrical connection member 50 respectively pass through the first hollow 411 and the second hollow 421 to electrically connect the inverter module 30 and the DC module 20. Along the second direction 002, the projection of the first hollow 411 on the plane where the second partition 42 is located is spaced apart from the second hollow 421. The projection of the first hollow 411 on the second partition 42 is spaced apart from the second hollow 421, so that the second partition 42 can shield the first hollow 411. Correspondingly, the projection of the second hollow 421 on the first partition 41 is spaced apart from the first hollow 411, so that the first partition 41 can shield the second hollow 421, thereby ensuring that the two partitions 40 can separate the DC module 20 from the inverter module 30 and preventing a magnetic field generated by one of the DC module 20 and the inverter module 30 from affecting the normal operation of the other.

[0080] In one embodiment, the housing 10 includes an opening, the orientation of the opening is parallel to the first direction 001, the motor controller 100 includes a cover plate, the cover plate is used to shield the opening, and there is a gap between the cover plate and the two partitions 40 along the first direction.

[0081] In one embodiment, as Figure 2 shown, the housing 10 includes a cooling water channel 14, the cooling water channel 14 is at least partially in contact with the inverter module 30, a coolant is filled in the cooling water channel 14, and the coolant can exchange heat with the inverter module 30 to reduce the temperature of the inverter module 30 and improve the cooling rate of the inverter module 30.

[0082] In one embodiment, the cooling water channel 14 is provided with a water inlet and a water outlet, and the coolant flows into the cooling water channel from the water inlet and flows out from the water outlet, so that the temperature of the coolant in the cooling water channel 14 is within a suitable range, ensuring the cooling effect of the cooling water channel 14 on the inverter module 30.

[0083] In one embodiment, as Figure 5 shown, the motor controller 100 includes a fuse 71, the fuse 71 is electrically connected between the DC module 20 and the electrical connection member 50. When the current flowing through the fuse 71 is outside the threshold range, the fuse 71 will disconnect the electrical connection between the DC module 20 and the electrical connection member 50 to protect the DC module 20 and / or the inverter module 30, thereby preventing the current in the DC module 20 from being too large and causing the DC module 20 and / or the inverter module 30 to be overloaded.

[0084] In another embodiment, the fuse 71 can also be electrically connected between the electrical connector 50 and the inverter module 30, ensuring that the magnitude of the current in the input circuit of the inverter module 30 is within a suitable threshold range, protecting the DC module 20 and / or the inverter module 30, and preventing the current in the DC module 20 from being too large, which may cause the DC module 20 and / or the inverter module 30 to be overloaded.

[0085] In one embodiment, as Figure 6 shown, the motor controller 100 includes a capacitor 72. The capacitor 72 is fixed on the side of the first partition 41 facing the inverter module 30, and the capacitor 72 is electrically connected between the electrical connector 50 and the input circuit of the inverter module 30. The capacitor 72 can filter the DC current of the electrical connector 50, making the change of the DC current in the input circuit of the inverter module 30 more stable, thereby protecting the inverter module 30 from damage. At the same time, the capacitor 72 can also effectively reduce the generation of electromagnetic interference, making the influence of electromagnetic interference between the DC module 20 and the inverter module 30 smaller.

[0086] In one embodiment, as Figure 6 shown, the motor controller 100 includes a Hall element 73. The Hall element 73 is located on the side of the first partition 41 facing the inverter module 30, and the Hall element 73 is electrically connected between the output circuit of the inverter module 30 and the output terminal 82. The Hall element 73 can detect the change of the magnetic field in the motor controller 100.

[0087] In one embodiment, the output terminal 82 of the motor controller 100 is electrically connected to the drive motor 110, and the Hall element 73 can detect the rotational speed of the rotor in the drive motor 110.

[0088] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the said embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

Claims

1. A motor controller, characterized in that: include: A housing, a DC module, an inverter module, an electrical connector and two partitions, wherein the housing includes an inner cavity, the two partitions are fixed in the inner cavity and spaced apart from each other, the DC module and the inverter module are respectively fixed on opposite sides of the two partitions, and the electrical connector electrically connects the DC module and the inverter module; The two partitions are electromagnetic shielding components.

2. The motor controller according to claim 1, characterized in that: The two partitions include a first partition and a second partition, the second partition is located on the side of the first partition facing the DC module, along a first direction, the size of the second partition is greater than or equal to the size of the first partition, and the first direction is perpendicular to the arrangement direction of the first partition and the second partition.

3. The motor controller according to claim 2, characterized in that: The second direction is perpendicular to the first direction, and along the second direction, the projection of the DC module on the plane where the second partition plate is located is located inside the second partition plate; and / or Along the second direction, a projection of the inverter module on the plane where the first partition is located is located inside the first partition.

4. The motor controller according to claim 2, characterized in that: The first partition and the second partition divide the inner cavity into three relatively independent sub-cavities, the DC module and the inverter module are respectively located in the two sub-cavities on the opposite sides of the two partitions, and at least part of the electrical connector is located in the sub-cavity between the two partitions.

5. The motor controller according to claim 4, characterized in that: The sub-cavity includes a first sub-cavity, and the first sub-cavity is used to accommodate the DC module, wherein: The first sub-cavity includes a first part and a second part, the first part and the second part are arranged along a third direction, the third direction is perpendicular to the first direction and the second direction respectively, the first part is located on the side of the second partition away from the first partition, the second part extends toward the outside of the first part, and the extension direction of the second part intersects with the third direction.

6. The motor controller according to claim 4, characterized in that: The motor controller comprises an input end and an output end, wherein the input end and the output end extend into different sub-cavities respectively and are electrically connected to the DC module and the inverter module respectively, so as to convert the input DC current into the output AC current.

7. The motor controller according to claim 2, characterized in that: The motor controller comprises a magnetic sheath, which is arranged around the outside of the DC module and is used to reduce electromagnetic interference to the DC module; and / or The magnetic sheath is disposed around the outside of the electrical connector to reduce electromagnetic interference to the electrical connector.

8. The motor controller according to claim 7, characterized in that: The magnetic sheath is disposed around the outside of the DC module, and along the second direction, the projection of the magnetic sheath on the plane where the second partition plate is located is located inside the second partition plate.

9. The motor controller according to claim 7, characterized in that: The magnetic sheath is disposed around the outside of the electrical connector and is located between the two partitions. Along the second direction, the projection of the magnetic sheath on the plane where the first partition is located is located inside the first partition.

10. The motor controller according to claim 2, characterized in that: The first partition is provided with a first hollow, and the second partition is provided with a second hollow. The two ends of the electrical connection member respectively pass through the first hollow and the second hollow to respectively connect the inverter module and the DC module. Along the second direction, the projection of the first hollow on the plane where the second partition is located is spaced apart from the second hollow.

11. A drive system, characterized in that: It comprises a drive motor and a motor controller according to any one of claims 1 to 10, wherein the drive motor is electrically connected to an inverter module of the motor controller for supplying power to the drive motor.

12. A vehicle, characterized in that: A device comprising a drive motor and a motor controller according to any one of claims 1 to 10, wherein the drive motor is electrically connected to an inverter module of the motor controller for supplying power to the drive motor; or Comprising the drive system of claim 11.

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