Motor controller and vehicle

Abstract

The invention relates to a motor controller and a vehicle, relates to the technical field of vehicle parts, and aims to solve the problem that the fault rate of the motor controller is relatively high. The motor controller comprises a capacitor and a power assembly, and the power assembly is electrically connected with the capacitor and used for being connected with a motor. The capacitor comprises a shell and a capacitor core, the shell is provided with a containing cavity and a heat dissipation channel which are independent of each other, the capacitor core is arranged in the containing cavity, and the heat dissipation channel is used for circulation of a heat exchange medium. The power assembly is arranged on the shell and located on the peripheral side of the shell. The heat dissipation channel is at least partially located between the containing core and the power assembly, and the heat exchange medium in the heat dissipation channel can exchange heat with the containing core and the power assembly. The motor controller is used for adjusting the electric energy supplied to the motor.

Description

Technical Field

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

[0002] A vehicle generally includes a battery pack, a motor, and a motor controller. The battery pack is connected to the motor through the motor controller and is used to supply power to the motor; the motor is connected to the wheels and is used to drive the wheels to rotate so that the vehicle runs. Among them, the motor controller can adjust the electric energy supplied to the motor to change the driving state of the vehicle.

[0003] In the related art, the heat dissipation effect of the motor controller is poor, and its capacitors and power modules are easily damaged, resulting in a high failure rate of the motor controller. Summary of the Invention

[0004] The present invention provides a motor controller and a vehicle, aiming to solve the problem of high failure rate of the motor controller.

[0005] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] In a first aspect, an embodiment of the present application provides a motor controller, which includes a capacitor and a power component. The power component is electrically connected to the capacitor and is used to connect to the motor. The capacitor includes a housing and a capacitive core. The housing has an independent accommodation cavity and a heat dissipation channel. The capacitive core is arranged in the accommodation cavity, and the heat dissipation channel is used for the circulation of a heat exchange medium. The power component is arranged on the housing and is located on the circumferential side of the housing. Among them, at least part of the heat dissipation channel is located between the capacitive core and the power component, and the heat exchange medium in the heat dissipation channel can perform heat exchange with the capacitive core and the power component.

[0007] According to the above technical means, during the process of the heat exchange medium flowing through the heat dissipation channel, the heat exchange medium can perform heat exchange with the capacitive core and the power component, thereby taking away part of the heat generated when the capacitive core and the power component work, so as to improve the heat dissipation efficiency of the capacitive core and the power component, and further reduce the risk of damage to the capacitor and the power module. In this way, the heat dissipation efficiency of the motor controller can be improved, and the failure rate of the motor controller can be reduced.

[0008] In a possible implementation manner, the power component includes a power module and a radiator. The power module is electrically connected to the capacitive core and is used to connect to the motor. The radiator is arranged between the power module and the housing and is in contact with the power module and the housing; at least part of the heat dissipation channel is located between the radiator and the capacitive core.

[0009] According to the above technical means, part of the heat generated by the power module during operation can be transferred to the radiator, part of which can be directly dissipated through the radiator, and the other part can be transferred to the heat exchange medium in the heat dissipation channel and then carried away by the heat exchange medium. This can improve the heat dissipation efficiency of the power module, thereby reducing the risk of damage to the power module and further reducing the failure rate of the motor controller.

[0010] In a possible implementation, the power assembly further includes a driving board, which is disposed on a side of the power module facing away from the housing and is electrically connected to the power module, and is used to drive the power module to adjust output power.

[0011] According to the above technical means, the driving board can drive the power module to adjust the output power to adjust the electric energy supplied to the motor, thereby realizing the control of the operating state of the motor.

[0012] In a possible implementation, the motor controller includes a plurality of power components, the capacitor is electrically connected to the plurality of power components, and the plurality of power components are arranged in parallel.

[0013] According to the above technical means, multiple power components can be connected to multiple motors, so that the motor controller can control multiple motors through multiple power components without configuring a motor controller for each motor separately. In this way, the demand for layout space of the motor controller can be reduced, which helps to improve space utilization.

[0014] In a possible implementation, the capacitor further includes two joints, and the housing is connected between the two joints, wherein the joint has a connecting channel, and the connecting channel is connected to the heat dissipation channel.

[0015] According to the above technical means, the heat dissipation channel can be connected to the outside of the shell through two joints, so that it is convenient to transport the heat exchange medium to the heat exchange channel through the joints.

[0016] In a possible implementation, the heat dissipation channel includes a plurality of sub-channels, the sub-channels are connected between two connection channels of two joints, and the plurality of sub-channels are arranged in parallel. At least one sub-channel is arranged between each power component and the core.

[0017] According to the above technical means, multiple sub-channels can divert the heat exchange medium to multiple power components, thereby realizing heat exchange with multiple power components at the same time. This can improve the heat dissipation efficiency of multiple power modules at the same time, thereby reducing the risk of damage to multiple power modules and helping to reduce the failure rate of the motor controller.

[0018] In a possible implementation, the motor controller further includes a control board, which is electrically connected to a plurality of power components. The control board is configured to receive a control instruction and send a corresponding control signal to the power components based on the control instruction to control the power components to adjust the output power.

[0019] According to the above technical means, the control board can control the power components to adjust the output power, so as to adjust the electric energy supplied to the motor, thereby realizing the control of the operating state of the motor. Among them, a plurality of power components share a control board, which can not only achieve higher integration and space utilization rate, but also integrate the motor controller algorithm, drive circuit, power management and protection circuit, etc. into one body to eliminate the cable connection and independent modules in the traditional discrete design, which helps to reduce parasitic inductance and capacitance and improve signal integrity.

[0020] In a possible implementation, the motor controller further includes a shielding cover, which is disposed between the control board and the power components, and the orthographic projection of the power components on the shielding cover is located within the boundary of the shielding cover.

[0021] According to the above technical means, on the one hand, the shielding cover can block the transmission of external electromagnetic waves to the power components, thereby reducing the interference caused by external electromagnetic waves to the power components to ensure the stable and reliable operation of the power components. On the other hand, the shielding cover can block the transmission of electromagnetic waves generated by the power components to the outside, thereby reducing the interference caused to the electronic devices around the power components. For example, the shielding cover can block the transmission of electromagnetic waves generated by the power components to the control board, thereby reducing the interference to the control board and improving the stability of the operation of the motor controller.

[0022] In a possible implementation, the shielding cover includes a main board and a plurality of limiting plates. The plurality of limiting plates are disposed on the side of the main board close to the control board, and the plurality of limiting plates are spaced along the circumference of the control board.

[0023] According to the above technical means, during the assembly of the motor controller, the plurality of limiting plates can preliminarily guide and position the control board, which helps to improve the assembly efficiency of the motor controller. In addition, the plurality of limiting plates are arranged around the control board, which can better block the electromagnetic waves generated by the power components and external electromagnetic waves from being transmitted to the control board to reduce the electromagnetic interference received by the control board, thereby improving the stability of the operation of the motor controller.

[0024] In a possible implementation, the motor controller further includes a connection component, which includes a conductor and a current sensor. The conductor is electrically connected to the power component and is used to be electrically connected to the motor. The current sensor is coupled to the conductor and is used to detect the current in the conductor.

[0025] According to the above technical means, by detecting the current in the conductor through a current sensor, the operating state of the motor can be monitored in real time, which helps to achieve precise control of the operating state of the motor.

[0026] In a possible implementation manner, the connection component includes a plurality of conductors and a plurality of current sensors. The plurality of conductors are arranged at intervals, and one current sensor is correspondingly coupled to one conductor.

[0027] According to the above technical means, the plurality of current sensors can better monitor the operating state of the motor, thereby ensuring the stable and reliable operation of the motor.

[0028] In a possible implementation manner, the connection component further includes an insulating shell. The conductor is partially located inside the insulating shell, and the current sensor is located inside the insulating shell.

[0029] According to the above technical means, the conductor and the current sensor can be integrated into one body through the insulating housing. Compared with the split installation of the conductor and the current sensor, the deviation of the relative positions of the integrated conductor and current sensor is smaller, and the detection accuracy of the current sensor is higher, which can better monitor the operating state of the motor.

[0030] In a possible implementation manner, the connection component further includes a shielding member. The shielding member is connected to the insulating shell and surrounds at least part of the current sensor.

[0031] According to the above technical means, the shielding member can block the transmission of external electromagnetic waves to the current sensor, reduce the electromagnetic interference received by the current sensor, help to improve the detection accuracy of the current sensor higher, and facilitate better monitoring of the operating state of the motor.

[0032] In a second aspect, the embodiments of the present application further provide a vehicle, which includes a motor and a motor controller in the first aspect and any one of its possible implementation manners described above. The power component in the motor controller is electrically connected to the motor.

[0033] It should be noted that the technical effects brought by the implementation manners in the second aspect can refer to the technical effects brought by the corresponding implementation manners in the first aspect, which will not be elaborated here.

[0034] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. Description of the Drawings

[0035] Figure 1 Structural diagram of a vehicle provided by some embodiments of the present application;

[0036] Figure 2 Structural diagram of a motor controller provided by some embodiments of the present application;

[0037] Figure 3 A cross-sectional view of a capacitor provided in some embodiments of the present application;

[0038] Figure 4 A structural diagram of a capacitor provided in some embodiments of the present application;

[0039] Figure 5 A structural diagram of a power component provided in some embodiments of the present application;

[0040] Figure 6 An exploded view of a motor controller provided in some embodiments of the present application;

[0041] Figure 7 A structural diagram of a connection component provided in some embodiments of the present application.

[0042] Reference numerals:

[0043] 1000 - vehicle; 100 - body; 200 - wheel; 300 - battery pack; 400 - motor controller; 1 - capacitor; 11 - housing; 111 - accommodating cavity; 112 - heat dissipation channel; 12 - capacitor core; 13 - connector; 131 - connection channel; 2 - power component; 21 - power module; 22 - radiator; 23 - drive board; 3 - control board; 4 - shielding cover; 41 - main board; 42 - limiting board; 5 - connection component; 51 - conductor; 52 - current sensor; 53 - insulating shell; 54 - shielding member. Detailed implementation manners

[0044] In order to enable those of ordinary skill in the art to better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0045] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0046] See Figure 1, An embodiment of the present application provides a vehicle 1000, which can be a passenger car such as a sedan, a sport utility vehicle (SUV), or a multi-purpose vehicle (MPV), or can also be a bus, a truck, a semi-trailer, etc. The present application does not make specific limitations in this regard.

[0047] Among them, the vehicle 1000 includes a vehicle body 100 and wheels 200. A passenger compartment is formed inside the vehicle body 100, and the passenger compartment can be used for passengers to ride or for loading goods. The wheels 200 are installed on the vehicle body 100 and are used to support the vehicle body 100 and play a role in steering during the driving of the vehicle 1000.

[0048] It should be noted that the present application does not make specific limitations on the number of wheels 200. For example, the vehicle 1000 includes 4 wheels 200. The 4 wheels 200 include two front wheels arranged oppositely and two rear wheels arranged oppositely, and the two front wheels are located on the side of the two rear wheels closer to the vehicle head.

[0049] Taking the vehicle 1000 including two front wheels arranged oppositely and two rear wheels arranged oppositely as an example, some embodiments of the present application will be exemplarily described below.

[0050] In some embodiments, the vehicle 1000 further includes a battery pack 300 and a motor. The battery pack 300 is electrically connected to the motor. Among them, the battery pack 300 is used to supply power to the motor to enable the motor to operate; the motor is connected to the wheels 200 and is used to drive the wheels 200 to move so that the vehicle 1000 can drive or steer.

[0051] It can be understood that the number of motors can be one or more, and can be specifically selected according to actual situations. The present application does not make limitations in this regard. For example, the two front wheels are driven by the same motor or the two front wheels are separately driven by different motors; and / or, the two rear wheels are driven by the same motor or the two rear wheels are separately driven by different motors.

[0052] In some embodiments, referring to Figure 2 , the vehicle 1000 further includes a motor controller 400. The motor controller 400 is connected between the battery pack 300 and the motor. The motor controller 400 can adjust the electric energy supplied to the motor to change the operating state of the motor, and further change the driving state of the vehicle 1000. For example, the motor controller 400 can increase the power supplied to the motor to increase the rotational speed of the motor, and further increase the driving speed or acceleration of the vehicle 1000.

[0053] Among them, as Figure 2As shown, the motor controller 400 includes a capacitor 1 and a power component 2, and the power component 2 is electrically connected to the capacitor 1. It can be understood that the capacitor 1 can be connected to the battery pack 300, and the power component 2 can be connected to the motor. In this way, the capacitor 1 can play a filtering role, can provide a more stable current for the power component 2, and helps to improve the operating stability of the power component 2; while the power component 2 can change the output power to change the operating state of the motor, so as to control the driving state of the vehicle 1000.

[0054] It should be noted that the capacitor 1 can be a thin-film capacitor 1. The capacitance value of the thin-film capacitor 1 changes less with temperature. Using the thin-film capacitor 1 can improve the stability of the motor controller 400.

[0055] Exemplarily, as Figure 3 shown, the capacitor 1 includes a housing 11 and a capacitor core 12. The housing 11 has an independent accommodation cavity 111 and a heat dissipation channel 112. The capacitor core 12 is disposed in the accommodation cavity 111, and the heat dissipation channel 112 is used for circulating a heat exchange medium. Among them, the capacitor core 12 is electrically connected to the power component 2 (as Figure 2 shown) and the battery pack 300 (as Figure 1 shown) for playing a filtering role, so as to provide a stable current for the power component 2. The power component 2 is disposed on the housing 11, and the power component 2 is located on the peripheral side of the housing 11. The heat dissipation channel 112 is at least partially located between the capacitor core 12 and the power component 2, and the heat exchange medium in the heat dissipation channel 112 can perform heat exchange with the capacitor core 12 and the power component 2.

[0056] In this way of setting, during the process of the heat exchange medium flowing through the heat dissipation channel 112, the heat exchange medium can perform heat exchange with the capacitor core 12 and the power component 2, so as to take away part of the heat generated when the capacitor core 12 and the power component 2 work, to improve the heat dissipation efficiency of the capacitor core 12 and the power component 2, and further reduce the risk of damage to the capacitor 1 and the power module 21. In this way, the heat dissipation efficiency of the motor controller 400 can be improved, and the failure rate of the motor controller 400 can be reduced.

[0057] It can be understood that the heat exchange medium can be water, coolant, refrigerant, etc., and can be specifically selected according to the actual situation, and this application does not make a limitation in comparison. For example, the heat exchange channel can be connected to the cooling system of the vehicle 1000, so that the coolant in the cooling system can be used as the heat exchange medium.

[0058] It should be noted that the number of the power components 2 in the motor controller 400 can be one or more. That is to say, the motor controller 400 can include one or more power components 2, and this application does not make a specific limitation on this.

[0059] Among them, as Figure 2As shown, in the case where the motor controller 400 includes a plurality of power components 2, the capacitor 1 can be electrically connected to the plurality of power components 2, and the plurality of power components 2 are arranged in parallel. In this way, the plurality of power components 2 can be connected to a plurality of motors, so that the motor controller 400 can control a plurality of motors through the plurality of power components 2 without separately configuring a motor controller 400 for each motor. This can reduce the space requirement of the motor controller 400 for the layout space and help improve the space utilization rate.

[0060] Taking the motor controller 400 including a plurality of power components 2 as an example, some embodiments of the present application will be described exemplarily below.

[0061] In some embodiments, as Figure 2 and Figure 3 shown, along the first direction X, the plurality of power components 2 are arranged on the same side of the housing 11, and the arrangement direction of the plurality of power components 2 is perpendicular to the first direction X. That is to say, the plurality of power components 2 are arranged flat on the same side of the housing 11.

[0062] In this way of setting, it is convenient for the heat exchange medium in the heat exchange channel to exchange heat with the plurality of power components 2 at the same time, so as to improve the heat dissipation efficiency of the plurality of power modules 21, thereby reducing the risk of damage to the plurality of power modules 21, and further reducing the failure rate of the motor controller 400.

[0063] In order to facilitate the delivery of the heat exchange medium into the heat exchange channel of the housing 11, in some embodiments, referring to Figure 3 and Figure 4 , the capacitor 1 may further include two connectors 13, and the housing 11 is connected between the two connectors 13. Wherein, the connector 13 has a connection channel 131, and the connection channel 131 is connected to the heat dissipation channel 112. In this case, the heat dissipation channel 112 can communicate with the outside of the housing 11 through the two connectors 13, so that it is convenient to deliver the heat exchange medium to the heat exchange channel through the connector 13.

[0064] Wherein, the two connectors 13 and the housing 11 can be either a split structure or an integrally formed structure, and can be specifically selected according to the actual situation, and the present application does not limit this. For example, the two connectors 13 and the housing 11 are integrally formed, which can not only improve the connection strength between the two connectors 13 and the housing 11 and extend the service life, but also reduce the number of parts of the motor controller 400, shorten the manufacturing process, and thus improve the production efficiency.

[0065] It should be noted that the housing 11 can be arranged on the same side of the two connectors 13, or between the two connectors 13, or the two connectors 13 can be respectively arranged on two adjacent surfaces of the housing 11, and can be specifically selected according to the actual situation, and the present application does not limit this.

[0066] Exemplarily, as Figure 4 shown, two connectors 13 are arranged oppositely, and the housing 11 is arranged between the two connectors 13. Arranged in this way, during the process of connecting the pipeline for circulating the heat exchange medium and the connector 13, interference between the two pipelines connected to the two connectors 13 can be avoided.

[0067] In some embodiments, referring to Figure 3 and Figure 4 , the heat dissipation channel 112 includes a plurality of sub-channels, the sub-channels are connected between the two connection channels 131 of the two connectors 13, and the plurality of sub-channels are arranged in parallel. Among them, at least one sub-channel is provided between each power component 2 and the core 12.

[0068] Arranged in this way, the plurality of sub-channels can divide the heat exchange medium to multiple power components 2, so as to realize heat exchange with multiple power components 2 simultaneously, which can improve the heat dissipation efficiency of multiple power modules 21 at the same time, thereby reducing the risk of damage to multiple power modules 21, and contributing to reducing the failure rate of the motor controller 400.

[0069] In some embodiments, referring to Figure 3 and Figure 5 , the power component 2 includes a power module 21, the power module 21 is electrically connected to the core 12, and the power module 21 is used to connect to the motor. It should be noted that the power module 21 can change the operating state of the motor by changing the output power, so as to control the driving state of the vehicle 1000.

[0070] In addition, the power component 2 further includes a radiator 22, the radiator 22 can be arranged between the power module 21 and the housing 11, and the radiator 22 is in contact with the power module 21 and the housing 11. On this basis, at least part of the heat dissipation channel 112 is located between the radiator 22 and the core 12.

[0071] Arranged in this way, part of the heat generated when the power module 21 works can be transferred to the radiator 22, part of these heats can be directly dissipated through the radiator 22, and the other part can be transferred to the heat exchange medium in the heat dissipation channel 112, and then be taken away by the heat exchange medium. This can improve the heat dissipation efficiency of the power module 21, thereby reducing the risk of damage to the power module 21, and further reducing the failure rate of the motor controller 400.

[0072] Among them, the radiator 22 can be a Pin Fin radiator, a Plate Fin radiator, etc., and can be specifically selected according to actual situations, and the present application does not make specific limitations on this. For example, the radiator 22 is a Pin Fin radiator welded on the power module 21.

[0073] In addition, the power component 2 may further include a drive board 23. The drive board 23 is disposed on a side of the power module 21 facing away from the housing 11, and the drive board 23 is electrically connected to the power module 21 and is used to drive the power module 21 to adjust the output power. That is to say, the drive board 23 can drive the power module 21 to adjust the output power so as to adjust the electric energy supplied to the motor, thereby realizing the control of the operating state of the motor.

[0074] By setting in this way, the signal path can be effectively shortened, such as the transmission distance of the SPWM signal to the drive circuit, and the delay and noise interference can be effectively reduced, and the dynamic response speed can be improved.

[0075] In some embodiments, referring to Figure 2 , the motor controller 400 further includes a control board 3. The control board 3 is electrically connected to a plurality of power components 2. That is to say, a plurality of power components 2 share one control board 3.

[0076] It should be noted that the control board 3 is used to receive a control instruction and send a corresponding control signal to the power component 2 based on the control instruction to control the power component 2 to adjust the output power. In this way, the control board 3 can control the power component 2 to adjust the output power so as to adjust the electric energy supplied to the motor, thereby realizing the control of the operating state of the motor.

[0077] Among them, a plurality of power components 2 sharing one control board 3 can not only achieve higher integration and space utilization rate, facilitate the realization of lightweight; but also integrate the motor controller 400 algorithms, drive circuits, power management and protection circuits, etc. into one body to eliminate the cable connection and independent modules in the traditional discrete design, which helps to reduce the parasitic inductance and capacitance 1 and improve the signal integrity.

[0078] Exemplarily, the control board 3 can be connected to the drive board 23 in the power component 2 through pins or a socket, and then drive the power module 21 to adjust the output power through the drive board 23 to control the operating state of the motor.

[0079] In some embodiments, referring to Figure 2 , the motor controller 400 further includes a shielding cover 4. The shielding cover 4 is disposed between the control board 3 and the power component 2, and the orthographic projection of the power component 2 on the shielding cover 4 is located within the boundary of the shielding cover 4. That is to say, the orthographic projection of the shielding cover 4 on the power component 2 can cover the power component 2.

[0080] Among them, the shielding cover 4 can not only block the transmission of external electromagnetic waves to the power component 2, thereby reducing the interference caused by external electromagnetic waves to the power component 2 to ensure the stable and reliable operation of the power component 2; the shielding cover 4 can also block the transmission of electromagnetic waves generated by the power component 2 to the outside, thereby reducing the interference caused to the electronic devices around the power component 2.

[0081] To enable the shielding cover 4 to achieve the above function of shielding electromagnetic waves, the shielding cover 4 can be made of metal. For example, the shielding cover 4 can be made of copper or aluminum. The present application does not specifically limit the material of the shielding cover 4, and it can be selected according to the actual situation.

[0082] It can be understood that by arranging the shielding cover 4 between the control board 3 and the power component 2, the shielding cover 4 can block the electromagnetic waves generated by the power component 2 from being transmitted to the control board 3, thereby reducing the interference caused to the control board 3 and improving the operating stability of the motor controller 400.

[0083] To further reduce the electromagnetic interference caused by the power component 2 to the control board 3, refer to Figure 6 , the shielding cover 4 can be arranged to include a main board 41 and a plurality of limiting plates 42, and the plurality of limiting plates 42 are arranged on the side of the main board 41 close to the control board 3, and the plurality of limiting plates 42 are arranged at intervals along the circumference of the control board 3. That is to say, the plurality of limiting plates 42 are arranged around the control board 3. In this way, it can better block the electromagnetic waves generated by the power component 2 and the external electromagnetic waves from being transmitted to the control board 3, so as to reduce the electromagnetic interference received by the control board 3, thereby improving the operating stability of the motor controller 400.

[0084] In addition, during the assembly process of the motor controller 400, the plurality of limiting plates 42 can perform preliminary guiding and positioning on the control board 3, which helps to improve the assembly efficiency of the motor controller 400.

[0085] It should be noted that the main board 41 and the plurality of limiting plates 42 of the shielding cover 4 can either be a plurality of separate components or an integrally formed component. The present application does not specifically limit this.

[0086] Exemplarily, the main board 41 and the plurality of limiting plates 42 of the shielding cover 4 are integrally formed. For example, the shielding cover 4 is made of the same metal plate through sheet metal processing. Arranged in this way, not only can the connection strength between the main board 41 and the plurality of limiting plates 42 be improved, and the service life of the shielding cover 4 be extended; but also the number of parts of the shielding cover 4 can be reduced, the manufacturing process can be simplified, and the production efficiency can be improved.

[0087] In some embodiments, refer to Figure 6 and Figure 7 , the motor controller 400 further includes a connection component 5, and the connection component 5 includes a conductor 51 and a current sensor 52. The conductor 51 is electrically connected to the power component 2. For example, the conductor 51 is electrically connected to the power module 21 in the power component 2, and the conductor 51 is used to be electrically connected to the motor. The current sensor 52 is coupled to the conductor 51 and is used to detect the current in the conductor 51.

[0088] Among them, the coupling of the current sensor 52 to the conductor 51 includes direct contact coupling (for example, the current sensor 52 is directly electrically connected to the conductor 51) and non-contact coupling (for example, the current sensor 52 is connected to the conductor 51 by electromagnetic induction). Specifically, it can be selected according to the actual situation, and the present application does not make specific limitations on this.

[0089] It can be understood that by detecting the current in the conductor 51 through the current sensor 52, the operating state of the motor can be monitored in real time, which helps to achieve precise control of the operating state of the motor. In addition, setting the connection component 5 can facilitate the connection between the motor controller 400 and the motor.

[0090] Hereinafter, taking the non-contact coupling of the current sensor 52 to the conductor 51 as an example, some embodiments of the present application will be exemplarily described.

[0091] Exemplarily, as Figure 7 shown, the connection component 5 includes a plurality of conductors 51 and a plurality of current sensors 52. The plurality of conductors 51 are arranged at intervals, and one current sensor 52 is correspondingly coupled to one conductor 51. It can be understood that the plurality of current sensors 52 can better monitor the operating state of the motor, thereby ensuring the stable and reliable operation of the motor.

[0092] For example, the connection component 5 includes three conductors 51 and three current sensors 52, and the three conductors 51 and the three current sensors 52 are correspondingly coupled one by one. In this case, the motor connected to the connection component 5 can be a three-phase motor, and the torque output of the three-phase motor is smoother, which is beneficial to reducing mechanical vibration and noise.

[0093] In addition, as Figure 7 shown, the connection component 5 may further include an insulating shell 53. The conductor 51 is partially located in the insulating shell 53, and the current sensor 52 is located in the insulating shell 53. Exemplarily, the insulating shell 53, the conductor 51, and the current sensor 52 are integrally injection-molded.

[0094] Set in this way, the conductor 51 and the current sensor 52 can be integrated into one body through the insulating shell 53. Compared with the split installation of the conductor 51 and the current sensor 52, the deviation of the relative positions of the integrated conductor 51 and current sensor 52 is smaller, and the detection accuracy of the current sensor 52 is higher, which can better monitor the operating state of the motor.

[0095] In addition, the connection component 5 may further include a shielding member 54. The shielding member 54 is connected to the insulating shell 53 and at least partially surrounds the current sensor 52. Among them, the shielding member 54 may also be integrally injection-molded with the conductor 51, the current sensor 52, and the insulating shell 53.

[0096] It can be understood that the shielding member 54 can block the transmission of external electromagnetic waves to the current sensor 52, can reduce the electromagnetic interference received by the current sensor 52, helps to improve the detection accuracy of the current sensor 52, and is convenient for better monitoring the operating state of the motor.

[0097] Exemplarily, the shielding member 54 includes a plurality of U-shaped metal parts, each current sensor 52 corresponds to a U-shaped metal part, and the current sensor 52 is located inside the corresponding U-shaped metal part. That is to say, the current sensor 52 is partially surrounded by the corresponding U-shaped part. This can protect multiple current sensors 52 at the same time and can reduce the electromagnetic interference received by multiple current sensors 52 at the same time.

[0098] In some embodiments, referring to Figure 6 , the motor controller 400 includes a plurality of connection components 5, and one connection component 5 is correspondingly connected to one power component 2.

[0099] Exemplarily, the motor controller 400 includes two power components 2 and two connection components 5. At this time, the motor controller 400 is a dual-motor controller.

[0100] Among them, the two power components 2 can be arranged between the two connection components 5, and the connection component 5 is electrically connected to the power module 21 in the adjacent power component 2. This can avoid interference between the two connection components 5 and the two motors when they are connected by 2 cables, and helps to improve the wiring efficiency.

[0101] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A motor controller, characterized in that, The motor controller (400) includes: A capacitor (1), the capacitor (1) includes: A housing (11) having an independent accommodation cavity (111) and a heat dissipation channel (112), the heat dissipation channel (112) being used for circulating a heat exchange medium; A capacitor core (12) disposed within the accommodation cavity (111); A power component (2) disposed on the housing (11) and located on the peripheral side of the housing (11); the power component (2) is electrically connected to the capacitor (1) and is used for connecting to a motor; Wherein, at least a part of the heat dissipation channel (112) is located between the capacitor core (12) and the power component (2), and the heat exchange medium within the heat dissipation channel (112) can perform heat exchange with the capacitor core (12) and the power component (2).

2. The motor controller according to claim 1, wherein, The power component (2) includes: A power module (21) electrically connected to the capacitor core (12) and used for connecting to a motor; A radiator (22) disposed between the power module (21) and the housing (11) and in contact with the power module (21) and the housing (11); at least a part of the heat dissipation channel (112) is located between the radiator (22) and the capacitor core (12).

3. The motor controller according to claim 2, characterized in that The power component (2) further includes: A drive board (23) disposed on a side of the power module (21) away from the housing (11) and electrically connected to the power module (21); the drive board (23) is used for driving the power module (21) to adjust the output power.

4. The motor controller according to claim 1, characterized in that, The motor controller (400) includes a plurality of the power components (2), the capacitor (1) is electrically connected to the plurality of power components (2), and the plurality of power components (2) are arranged in parallel.

5. The motor controller according to claim 4, characterized in that, The capacitor (1) further includes: Two connectors (13), the housing (11) is connected between the two connectors (13); wherein, the connector (13) has a connection channel (131), and the connection channel (131) is connected to the heat dissipation channel (112).

6. The motor controller according to claim 5, wherein The heat dissipation channel (112) includes: A plurality of sub-channels, the sub-channels are connected between the two connection channels (131) of the two connectors (13), and the plurality of sub-channels are arranged in parallel; at least one of the sub-channels is provided between each power component (2) and the capacitor core (12).

7. The motor controller according to claim 4, characterized in that, The motor controller (400) further includes: A control board (3) electrically connected to the plurality of power components (2); the control board (3) is used for receiving a control instruction and sending a corresponding control signal to the power component (2) based on the control instruction to control the power component (2) to adjust the output power.

8. The motor controller according to claim 7, characterized in that, The motor controller (400) further includes: A shielding cover (4) disposed between the control board (3) and the power component (2), and the orthographic projection of the power component (2) on the shielding cover (4) is located within the boundary of the shielding cover (4).

9. The motor controller according to claim 8, wherein The shielding cover (4) includes: A main board (41) located between the control board (3) and the power component (2); A plurality of limiting plates (42) are arranged on one side of the main board (41) close to the control board (3), and the plurality of limiting plates (42) are arranged at intervals along the circumferential direction of the control board (3).

10. The motor controller according to any one of claims 4-9, characterized in that, The motor controller (400) further includes: A connection assembly (5), and the connection assembly (5) includes: A conductor (51), electrically connected to the power assembly (2) and used for electrically connecting to a motor; A current sensor (52), coupled to the conductor (51) and used for detecting the current in the conductor (51).

11. The motor controller according to claim 10, wherein, The connection assembly (5) includes a plurality of the conductors (51) and a plurality of the current sensors (52), the plurality of conductors (51) are arranged at intervals, and one current sensor (52) is correspondingly coupled to one conductor (51).

12. The motor controller according to claim 10, characterized in that, The connection assembly (5) further includes: An insulating shell (53), a part of the conductor (51) is located inside the insulating shell (53), and the current sensor (52) is located inside the insulating shell (53).

13. The motor controller according to claim 12, characterized in that, The connection assembly (5) further includes: A shielding member (54), connected to the insulating shell (53) and surrounding at least part of the current sensor (52).

14. A vehicle, characterized in that, The vehicle (1000) includes: A motor; The motor controller (400) according to any one of claims 1-13, and the power assembly (2) in the motor controller (400) is electrically connected to the motor.

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