Motor controller and electric device

Abstract

The embodiment of the invention provides a motor controller and an electric device. The motor controller includes: a controller body; the first terminal and the second terminal are connected with the controller main body, and the first terminal and the second terminal are respectively arranged on different sides of the controller main body. According to the motor controller, the first terminal and the second terminal are arranged in an isolated mode, coupling interference between the first terminal and the second terminal is reduced, and electromagnetic interference between the first terminal and the second terminal of the motor controller can be reduced.

Description

Motor controller and power device Technical Field

[0001] The present application relates to the field of motor technology, and in particular to a motor controller and an electrical device. Background Art

[0002] Energy conservation and emission reduction are currently key to the sustainable development of the automotive industry. Electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of the industry's sustainable development. For electric vehicles, motor controller technology is a crucial factor in their development.

[0003] The motor controller includes input terminals and output terminals. How to reduce the electromagnetic interference between the input terminals and the output terminals is an urgent problem to be solved.

[0004] Summary of the Invention

[0005] In view of the above problems, the present application provides a motor controller and an electrical device, which can reduce electromagnetic interference between the first terminal and the second terminal of the motor controller.

[0006] In a first aspect, the present application provides a motor controller, comprising: a controller body; a first terminal and a second terminal connected to the controller body, wherein the first terminal and the second terminal are respectively arranged on different sides of the controller body.

[0007] In the technical solution of the embodiment of the present application, the motor controller includes a first terminal and a second terminal connected to the controller body, and the first terminal and the second terminal are respectively arranged on different sides of the controller body, which can realize the isolation setting of the first terminal and the second terminal, reduce the coupling interference between the first terminal and the second terminal, and reduce the electromagnetic interference between the first terminal and the second terminal of the motor controller.

[0008] In some embodiments, the first terminal and the second terminal are disposed on opposite sides of the controller body.

[0009] By arranging the first terminal and the second terminal on opposite sides of the controller body, the isolation distance between the first terminal and the second terminal can be increased, and the electromagnetic interference between the first terminal and the second terminal of the motor controller can be further reduced.

[0010] In some embodiments, the controller body includes a filter, a bus capacitor, a power module, and a current sensor connected in sequence, the filter is connected to the first terminal, and the current sensor is connected to the second terminal.

[0011] By sequentially connecting the filter, bus capacitor, power module and current sensor, the filter is connected to the first terminal and the current sensor is connected to the second terminal, which makes it easy to set the first terminal and the second terminal on opposite sides of the controller body, thereby reducing costs.

[0012] In some embodiments, the controller body includes a circuit board, and the filter, the bus capacitor, the power module, and the current sensor are disposed on the circuit board.

[0013] By placing the filter, bus capacitor, power module, and current sensor on the same circuit board, there is no need for an additional shielding plate, which reduces the height of the motor controller and reduces costs. In addition, there is no need for additional signal connection lines or manual wiring, which simplifies the process and improves the production efficiency of the motor controller.

[0014] In some embodiments, the filter, the bus capacitor, the power module, and the current sensor are spaced apart along an extension direction of the circuit board.

[0015] By arranging the filter, bus capacitor, power module and current sensor at intervals along the extension direction of the circuit board, the circuit layout is simple and easy to implement.

[0016] In some embodiments, the controller body includes a first shell, the first shell forms an accommodating space, and the circuit board, filter, bus capacitor, power module and current sensor of the controller body are arranged in the accommodating space.

[0017] In some embodiments, the controller body includes a first copper busbar and a second copper busbar, the first copper busbar is connected to the filter and the first terminal, and the second copper busbar is connected to the current sensor and the second terminal.

[0018] The filter and the first terminal are connected through the first copper bar, and the second copper bar is connected to the current sensor and the second terminal. Since the first terminal and the second terminal are isolated from each other, the first copper bar and the second copper bar are isolated from each other to reduce coupling interference between the first copper bar and the second copper bar, thereby reducing electromagnetic interference from the second copper bar to the first copper bar.

[0019] In some embodiments, the controller body includes a plurality of first fixing members, the circuit board is provided with a plurality of through holes, and the first fixing members pass through the corresponding through holes to fix the circuit board to the first shell.

[0020] By passing the first fixing member through the corresponding through hole, the circuit board is fixed to the first shell, thereby reducing the amplitude generated by the circuit board during high-frequency vibration and reducing the failure risk of the circuit board, filter, bus capacitor, power module and current sensor.

[0021] In some embodiments, the bus capacitor includes an insert, and the controller body includes a second fixing member, and the second fixing member is used to fix the circuit board to the insert.

[0022] By providing an insert in the bus capacitor, the second fixing member fixes the circuit board to the insert, further fixing the circuit board, further reducing the amplitude generated by the circuit board during high-frequency vibration, and improving the NVH effect of the motor controller.

[0023] In some embodiments, the controller body includes a cooling assembly disposed in the accommodating space and located on a side of the filter, the bus capacitor, the power module, and the current sensor away from the circuit board.

[0024] By arranging the cooling assembly on a side of the filter, bus capacitor, power module and current sensor away from the circuit board, the controller body can be cooled by the cooling assembly, thereby increasing the life of the controller body.

[0025] In some embodiments, the cooling assembly includes: a second shell, forming a first cooling channel; an inlet and an outlet, respectively arranged in the second shell, and the inlet and the outlet are connected to the first cooling channel for transmitting coolant; wherein, the first cooling channel is located below the power module, for dissipating heat from the power module through the coolant.

[0026] The first cooling channel is located below the power module and is used to dissipate heat from the power module, thereby increasing the service life of the power module.

[0027] The cooling assembly includes: a second shell, forming a first cooling channel, a second cooling channel and a third cooling channel that are connected in sequence; an inlet and an outlet, respectively arranged on the second shell, and the inlet is connected to the first cooling channel, and the outlet is connected to the third cooling channel for transmitting coolant.

[0028] The controller body is cooled by the first cooling channel, the second cooling channel and the third cooling channel which are connected in sequence, thereby improving the cooling efficiency.

[0029] In some embodiments, the first cooling channel is located below the power module, the second cooling channel is located below the bus capacitor, and the third cooling channel is located below the filter.

[0030] The first cooling channel is located below the power module, the second cooling channel is located below the bus capacitor, and the third cooling channel is located below the filter, so as to achieve heat dissipation for the power module, the bus capacitor and the filter.

[0031] In some embodiments, the coolant flows through the first cooling channel, the second cooling channel, and the third cooling channel in sequence to dissipate heat for the power module, the bus capacitor, and the filter.

[0032] The coolant flows through the first cooling channel, the second cooling channel and the third cooling channel in sequence, thereby dissipating heat for the power module, the bus capacitor and the filter in sequence. This can dissipate heat according to the different heat outputs of the power module, the bus capacitor and the filter, thereby improving heat dissipation efficiency and reducing costs.

[0033] In some embodiments, the controller body includes a third terminal mounted on the circuit board.

[0034] In some embodiments, the first terminal, the second terminal, and the third terminal are respectively disposed on different sides of the controller body.

[0035] In some embodiments, the controller body includes a support member installed in the first housing, and the second terminal is disposed on the support member. The second terminal is disposed on the support member to fix the second terminal and improve its stability.

[0036] In a second aspect, the present application provides an electrical device, comprising: a battery; the motor controller in the above embodiment, connected to the battery; a motor, connected to the motor controller, and the motor controller is used to control the battery to power the motor.

[0037] The motor controller receives DC current from the battery to convert the DC current into AC current, thereby controlling the battery to power the motor.

[0038] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without creative work.

[0040] FIG1 is a schematic structural diagram of a vehicle according to some embodiments of the present application;

[0041] FIG2 is a schematic diagram of the exploded structure of a battery according to some embodiments of the present application;

[0042] FIG3 is a schematic diagram of a motor controller according to some embodiments of the present application;

[0043] FIG4 is a schematic diagram of the structure of a motor controller according to some embodiments of the present application;

[0044] FIG5 is an exploded schematic diagram of a motor controller according to some embodiments of the present application;

[0045] FIG6 is a schematic diagram of the structure of a motor controller according to some embodiments of the present application;

[0046] FIG7 is a schematic structural diagram of a cooling assembly according to some embodiments of the present application;

[0047] FIG8 is a schematic structural diagram of a cooling assembly according to some embodiments of the present application;

[0048] In the drawings, the drawings are not drawn to scale.

[0049] Description of markings: vehicle 1000, battery 100, motor controller 200, motor 300, housing 10, battery cell 20, first part 11, second part 12, controller body 30, first shell 301, first terminal 31, second terminal 32, filter 331, bus capacitor 332, power module 333, current sensor 334, circuit board 34, via 341, third terminal 35, support 37, cooling assembly 36, second shell 361, inlet 362, outlet 363, first cooling channel 364, second cooling channel 365 and third cooling channel 366. DETAILED DESCRIPTION

[0050] The following detailed description of the embodiments of the present application is provided in conjunction with the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of the present application, but are not intended to limit the scope of the present application, that is, the present application is not limited to the described embodiments.

[0051] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by technicians in the technical field to which this application belongs; the terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0052] In the description of the present application, it should be noted that, unless otherwise specified, "multiple" means more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces); the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0053] In the description of this application, the terms "first," "second," "third," etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance. "Perpendicular" does not necessarily mean perpendicular, but rather indicates that the positions are within an acceptable range of error. "Parallel" does not necessarily mean parallel, but rather indicates that the positions are within an acceptable range of error.

[0054] In the description of this application, it should also be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," and the like should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections, or electrical connections; direct connections, or indirect connections through an intermediate medium; internal connections between two components, or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of this application based on specific circumstances.

[0055] In the description of this application, the term "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0056] In the description of this application, it should be noted that the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted. It should be understood that the thickness, length, width, and other dimensions of the various components in the embodiments of this application, as well as the overall thickness, length, width, and other dimensions of the integrated device shown in the drawings are merely illustrative and should not constitute any limitation on this application.

[0057] Currently, market developments indicate that batteries are becoming increasingly widely used. Batteries are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. In these applications, motor controllers are required to convert the battery's DC current into AC current to control the battery's power supply to the motor.

[0058] The inventors noticed that the motor controller is usually provided with two or more layers of circuit boards. In order to avoid electromagnetic interference between two adjacent layers of circuit boards, the upper circuit board needs to be fixed with a shielding plate, which increases the height of the motor controller; and the input terminal and output terminal of the motor controller are arranged at the same end of the motor controller, that is, the input terminal and output terminal of the motor controller are arranged adjacent to each other, which causes the output terminal to generate electromagnetic interference with the input terminal.

[0059] Based on the above considerations, in order to solve the problem of electromagnetic interference generated by the output terminal of the motor controller to the input terminal, the inventor has designed a motor controller after in-depth research. The motor controller includes a controller body and a first terminal and a second terminal connected to the controller body. The first terminal and the second terminal are respectively arranged on different sides of the controller body, which can realize the isolation of the first terminal and the second terminal, reduce the coupling interference between the first terminal and the second terminal, and reduce the electromagnetic interference between the first terminal and the second terminal of the motor controller.

[0060] The motor controller disclosed in the embodiments of the present application can be used in power-consuming devices that use batteries as power sources. The power-consuming devices may include, but are not limited to, electric toys, power tools, battery-powered vehicles, electric vehicles, ships, spacecraft, and the like. Among them, electric toys may include fixed or mobile electric toys, such as game consoles, electric vehicle toys, electric ship toys, and electric aircraft toys, and spacecraft may include airplanes, rockets, space shuttles, and spacecraft, and the like.

[0061] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the present application.

[0062] Please refer to Figure 1, which is a structural diagram of a vehicle 1000 provided in some embodiments of the present application. The vehicle 1000 can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 100 is provided inside the vehicle 1000, and the battery 100 can be provided at the bottom, head or tail of the vehicle 1000. The battery 100 can be used to power the vehicle 1000. For example, the battery 100 can serve as an operating power source for the vehicle 1000. The vehicle 1000 can also include a motor controller 200 and a motor 300. The motor controller 200 is used to control the battery 100 to power the motor 300, for example, for starting, navigating and driving the vehicle 1000.

[0063] In some embodiments of the present application, the motor controller 200 can serve not only as a controller of the motor 300 of the vehicle 1000, but also as a controller of other components of the vehicle 1000 to control the working requirements of the vehicle 1000 during startup, navigation and driving.

[0064] Please refer to Figure 2, which is a schematic diagram of the exploded structure of a battery according to some embodiments of the present application. Battery 100 includes a housing 10 and battery cells 20, with battery cells 20 housed within housing 10. Housing 10 provides storage space for battery cells 20 and can have various structures. In some embodiments, housing 10 can include a first portion 11 and a second portion 12, which overlap each other and together define a storage space for battery cells 20. Second portion 12 can be a hollow structure with one end open. First portion 11 can be a plate-like structure, with first portion 11 overlapping the open side of second portion 12, so that the first and second portions 11 and 12 together define a storage space. Alternatively, first portion 11 and second portion 12 can each be a hollow structure with one end open, with the open side of first portion 11 overlapping the open side of second portion 12. Housing 10 formed by first portion 11 and second portion 12 can have various shapes, such as a cylinder or a rectangular parallelepiped.

[0065] In the battery 100, there may be multiple battery cells 20, which may be connected in series, in parallel, or in a hybrid configuration. A hybrid configuration refers to a combination of series and parallel connections among the multiple battery cells 20. The multiple battery cells 20 may be directly connected in series, in parallel, or in a hybrid configuration, and then the entire structure formed by the multiple battery cells 20 is housed within the housing 10. Alternatively, the battery 100 may be constructed by first connecting multiple battery cells 20 in series, in parallel, or in a hybrid configuration to form a battery module, which is then connected in series, in parallel, or in a hybrid configuration to form a single structure, and then housed within the housing 10. The battery 100 may also include other structures, such as a busbar assembly for electrically connecting the multiple battery cells 20.

[0066] Each battery cell 20 may be a secondary battery or a primary battery, and may also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 20 may be cylindrical, flat, rectangular, or in other shapes.

[0067] According to some embodiments of the present application, as shown in FIG3 , which is a schematic diagram of a motor controller according to some embodiments of the present application, the present application provides a motor controller 200 for converting the direct current of a battery 100 into alternating current, so that the motor controller 200 controls the battery 100 to power a motor 300.

[0068] The motor controller 200 includes a controller body 30 and a first terminal 31 and a second terminal 32 connected to the controller body 30 , wherein the first terminal 31 and the second terminal 32 are respectively disposed on different sides of the controller body 30 .

[0069] The “first terminal 31 ” refers to a component connecting the motor controller 200 to the battery 100 . For example, the first terminal 31 is a DC terminal of the motor controller 200 . The first terminal 31 of the motor controller 200 is connected to the battery 100 to receive DC current.

[0070] The “second terminal 32 ” refers to a component connecting the motor controller 200 and the motor 300 . For example, the second terminal 32 is an AC terminal of the motor controller 200 . The second terminal 32 of the motor controller 200 is connected to the motor 300 to output AC current to the motor 300 .

[0071] The “controller body 30 ” refers to a main portion of the motor controller 200 , and the controller body 30 is used to convert the direct current of the battery 100 into an alternating current.

[0072] “Different sides of the controller body 30” means that the first terminal 31 and the second terminal 32 are respectively arranged on different sides of the controller body 30, and the controller body 30 has four sides, such as the first side, the second side, the third side and the fourth side; the first terminal 31 and the second terminal 32 are respectively arranged on different sides of the controller body 30, such as the first terminal 31 is arranged on the first side of the controller body 30, and the second terminal 32 is arranged on the second side of the controller body 30; or, the first terminal 31 is arranged on the first side of the controller body 30, and the second terminal 32 is arranged on the third side of the controller body 30.

[0073] The DC terminals and AC terminals of the existing motor controller are arranged on the same side of the motor controller. Electromagnetic noise is generated in the process of the existing motor controller converting DC current into AC current. The DC terminals and AC terminals of the existing motor controller are arranged on the same side of the motor controller, that is, the distance between the DC terminals and the AC terminals is close, and then the electromagnetic noise generated by the existing motor controller is coupled from the AC terminals to the DC terminals, resulting in electromagnetic interference between the DC terminals and the AC terminals of the existing motor controller.

[0074] Compared with the existing motor controller, by respectively arranging the first terminal 31 and the second terminal 32 on different sides of the controller body 30, the distance between the first terminal 31 and the second terminal 32 is increased, the first terminal 31 and the second terminal 32 can be isolated, the coupling interference between the first terminal 31 and the second terminal 32 can be reduced, and the electromagnetic interference between the first terminal and the second terminal of the motor controller 200 can be reduced.

[0075] According to some embodiments of the present application, optionally, referring to FIG. 3 , the first terminal 31 and the second terminal 32 are disposed on opposite sides of the controller body 30 .

[0076] "Opposite sides of the controller body 30" means that the first terminal 31 and the second terminal 32 are respectively arranged on two opposite sides of the controller body 30, for example, the first terminal 31 is arranged on the first side of the controller body 30, and the second terminal 32 is arranged on the third side of the controller body 30, and the first side of the controller body 30 and the third side of the controller body 30 are arranged opposite to each other.

[0077] By arranging the first terminal 31 and the second terminal 32 on opposite sides of the controller body 30 , the isolation distance between the first terminal 31 and the second terminal 32 can be increased, further reducing electromagnetic interference between the first terminal 31 and the second terminal 32 of the motor controller 200 .

[0078] According to some embodiments of the present application, please continue to refer to Figure 3. The controller body 30 includes a filter 331, a bus capacitor 332, a power module 333 and a current sensor 334 connected in sequence. The filter 331 is connected to the first terminal 31, and the current sensor 334 is connected to the second terminal 32.

[0079] The “filter 331 ” refers to an electronic component for effectively filtering out a specific frequency point in a DC current or frequencies other than the specific frequency point. For example, the filter 331 is an EMC (Electromagnetic Compatibility) filter.

[0080] “Bus capacitor 332 ” refers to a DC bus capacitor.

[0081] The “power module 333 ” refers to a power electronic component used to convert direct current into alternating current.

[0082] The current sensor 334 is an electronic component for monitoring AC current so that the second terminal 32 outputs AC current. Optionally, the circuit board 34 integrates the current sensor 334, eliminating the need for an additional current sensor 334, thereby reducing the size of the motor controller 200 and lowering costs.

[0083] By connecting the filter 331, bus capacitor 332, power module 333 and current sensor 334 in sequence, the filter 331 is connected to the first terminal 31, and the current sensor 334 is connected to the second terminal 32, so that the first terminal 31, filter 331, bus capacitor 332, power module 333, current sensor 334 and second terminal 32 are arranged along the extension direction of the controller body 30. For example, the first terminal 31, filter 331, bus capacitor 332, power module 333, current sensor 334 and second terminal 32 are arranged along the length direction of the controller body 30, which makes it easy to arrange the first terminal 31 and the second terminal 32 on opposite sides of the controller body 30, thereby reducing costs.

[0084] According to some embodiments of the present application, referring to Figures 3-5 , Figure 4 is a schematic diagram of the structure of a motor controller according to some embodiments of the present application, and Figure 5 is an exploded schematic diagram of a motor controller according to some embodiments of the present application. The controller body 30 includes a circuit board 34 , on which a filter 331 , a bus capacitor 332 , a power module 333 , and a current sensor 334 are disposed.

[0085] The "circuit board 34" refers to a circuit board used to provide electrical connections between the filter 331, bus capacitor 332, power module 333, and current sensor 334. For example, the filter 331, bus capacitor 332, power module 333, and current sensor 334 are mounted on the circuit board 34, so that the filter 331, bus capacitor 332, power module 333, and current sensor 334 are connected via the circuit board 34. The circuit board 34 may also be referred to as a circuit board card, a printed circuit board, or a printed wiring board.

[0086] The existing motor controller includes a control circuit board, a drive circuit board and a shielding plate. The control circuit board is installed on the shielding plate, which is used to isolate the control circuit board from the drive circuit board, resulting in poor NVH (Noise, Vibration, Harshness) effect of the control circuit board. In addition, signals are transmitted between the control circuit board and the drive circuit board through signal connection lines, which require manual installation, resulting in low generation efficiency.

[0087] By arranging the filter 331, bus capacitor 332, power module 333 and current sensor 334 on the same circuit board 34, compared with the control circuit board, drive circuit board and shielding plate of the existing motor controller, there is no need to set up an additional shielding plate. The single-layer circuit board 34 design is adopted to reduce the height of the motor controller 200 and reduce costs. In addition, there is no need to set up additional signal connection lines, no manual wiring is required, the process is simple, and the production efficiency of the motor controller 200 is improved.

[0088] According to some embodiments of the present application, the filter 331 , the bus capacitor 332 , the power module 333 , and the current sensor 334 are arranged at intervals along the extension direction of the circuit board 34 .

[0089] The "extension direction of circuit board 34" refers to the length direction of circuit board 34 in Figure 4. For example, filter 331, bus capacitor 332, power module 333, and current sensor 334 are spaced apart along the length of circuit board 34 to achieve a straight-line arrangement. In other embodiments, the extension direction of circuit board 34 may be the width direction of circuit board 34.

[0090] By arranging the filter 331 , the bus capacitor 332 , the power module 333 and the current sensor 334 at intervals along the extension direction of the circuit board 34 , a straight-line arrangement is achieved, and the circuit arrangement is simple and easy to implement.

[0091] According to some embodiments of the present application, the controller body 30 includes a first shell 301, which forms an accommodating space, and the circuit board 34, filter 331, bus capacitor 332, power module 333 and current sensor 334 of the controller body 30 are arranged in the accommodating space.

[0092] According to some embodiments of the present application, the controller body 30 includes a first copper busbar and a second copper busbar, the first copper busbar is connected to the filter 331 and the first terminal 31 , and the second copper busbar is connected to the current sensor 334 and the second terminal 32 .

[0093] "First copper bar" and "second copper bar" refer to copper busbars. For example, the first copper bar is a DC copper bar, and the second copper bar is an AC copper bar.

[0094] The filter 331 and the first terminal 31 are connected through the first copper bar, and the second copper bar is connected to the current sensor 334 and the second terminal 32. Since the first terminal 31 and the second terminal 32 are isolated, the first copper bar and the second copper bar are isolated to reduce the coupling interference between the first copper bar and the second copper bar, thereby reducing the electromagnetic interference of the second copper bar on the first copper bar.

[0095] According to some embodiments of the present application, the controller body 30 includes multiple first fixing members, the circuit board 34 is provided with multiple through holes 341 , and the first fixing members pass through the corresponding through holes 341 to fix the circuit board 34 to the first shell 301 .

[0096] The “first fixing member” refers to a member used to fix the circuit board 34 on the first housing 301 , for example, the first fixing member is a screw, a pin, a hook or a bolt.

[0097] The “via hole 341 ” refers to a hole that passes through the circuit board 34 , so that the first fixing member passes through the via hole 341 . For example, a plurality of via holes 341 are located around the circuit board 34 .

[0098] By passing the first fixing member through the corresponding through hole 341, the circuit board 34 is fixed to the first shell 301, thereby reducing the amplitude generated by the circuit board 34 during high-frequency vibration, and reducing the failure risk of the circuit board 34, the filter 331, the bus capacitor 332, the power module 333 and the current sensor 334.

[0099] According to some embodiments of the present application, the bus capacitor 332 is a Boake insert, and the controller body 30 includes a second fixing member, which is used to fix the circuit board 34 to the insert.

[0100] The “insert” refers to a component that is injection-molded on the bus capacitor 332 . The inner side wall of the insert is provided with an internal thread, and the second fixing member is provided with an external thread, so that the second fixing member fixes the circuit board 34 to the insert.

[0101] By providing an insert in the bus capacitor 332 , the second fixing member fixes the circuit board 34 to the insert, further fixing the circuit board 34 , further reducing the amplitude generated by the circuit board 34 during high-frequency vibration, and improving the NVH effect of the motor controller 200 .

[0102] According to some embodiments of the present application, optionally, referring to FIG. 4 , the controller body 30 includes a third terminal 35 , which is mounted on a circuit board 34 of the controller body 30 .

[0103] The third terminal 35 is a low-voltage terminal of the controller body 30 , which is used to output a low-voltage current. For example, the third terminal 35 is connected to the power module 333 through the circuit board 34 .

[0104] The controller body 30 is provided with a third terminal 35 , which is mounted on a circuit board 34 of the controller body 30 , so that the controller body 30 outputs a low-voltage current, thereby improving the application scenario of the motor controller 200 .

[0105] According to some embodiments of the present application, optionally, the first terminal 31, the second terminal 32, and the third terminal 35 are respectively disposed on different sides of the controller body 30. For example, the first terminal 31, the second terminal 32, and the third terminal 35 are respectively disposed on the first side surface, the third side surface, and the second side surface of the controller body 30, wherein the second side surface of the controller body 30 is respectively disposed adjacent to the first side surface and the third side surface, and the first side surface and the third side surface of the controller body 30 are disposed opposite each other.

[0106] By arranging the first terminal 31 , the second terminal 32 and the third terminal 35 on different sides of the controller body 30 , respectively, the position of the third terminal 35 can be adjusted so that the motor controller 200 can adapt to different application scenarios.

[0107] According to some embodiments of the present application, optionally, please continue to refer to FIG. 4 , the motor controller 200 includes a support member 37 installed on the first housing 301 , and the second terminal 32 is provided on the support member 37 .

[0108] The "support member 37" refers to a component for supporting the second terminal 32, such as a plastic component. By disposing the second terminal 32 on the support member 37, the second terminal 32 can be fixed by the support member 37, thereby improving the stability of the second terminal 32.

[0109] According to some embodiments of the present application, optionally, please refer to FIG6 , which is a schematic structural diagram of a motor controller according to some embodiments of the present application. The motor controller 200 shown in FIG6 differs from the motor controller 200 shown in FIG4 in that: the first terminal 31 and the second terminal 32 are respectively arranged on adjacent sides of the controller body 30, for example, the first terminal 31 is arranged on the first side surface of the controller body 30, and the second terminal 32 is arranged on the second side surface of the controller body 30, and the first side surface and the second side surface of the controller body 30 are arranged adjacent to each other, which is equivalent to the first terminal 31, the circuit board 34, and the second terminal 32 forming an L shape.

[0110] By arranging the first terminal 31 and the second terminal 32 on two adjacent sides of the controller body 30 , the motor controller 200 is expanded so that the motor controller 200 can adapt to different application scenarios.

[0111] According to some embodiments of the present application, with reference to Figures 4 and 7 , Figure 7 is a schematic diagram of the structure of a cooling assembly in some embodiments of the present application. The controller body 30 includes a cooling assembly 36 , which is disposed within the accommodation space and is located on a side of the filter 331 , bus capacitor 332 , power module 333 , and current sensor 334 away from the circuit board 34 .

[0112] “Located on the side of the filter 331, bus capacitor 332, power module 333 and current sensor 334 away from the circuit board 34” means that one side of the filter 331, bus capacitor 332, power module 333 and current sensor 334 is arranged on the circuit board 34, and the cooling component 36 is located on the other side of the filter 331, bus capacitor 332, power module 333 and current sensor 334, and the other side of the filter 331, bus capacitor 332, power module 333 and current sensor 334 is arranged opposite to one side of the filter 331, bus capacitor 332, power module 333 and current sensor 334.

[0113] By locating the cooling assembly 36 on a side away from the circuit board 34 where the filter 331 , bus capacitor 332 , power module 333 and current sensor 334 are located, the controller body 30 can be cooled by the cooling assembly 36 , thereby improving the life of the controller body 30 .

[0114] According to some embodiments of the present application, optionally, please continue to refer to Figures 4 and 7, the cooling assembly 36 includes a second shell 361, an inlet 362 and an outlet 363, the second shell 361 forms a first cooling channel 364, the inlet 362 and the outlet 363 are respectively arranged on the second shell 361, for example, the outlet 363 is arranged on the back of the second shell 361, and the inlet 362 is arranged on the front of the second shell 361.

[0115] “The back side of the second shell 361 ” refers to the surface of the second shell 361 away from the filter 331 , the bus capacitor 332 , the power module 333 and the current sensor 334 ; “the front side of the second shell 361 ” refers to the surface of the second shell 361 close to the filter 331 , the bus capacitor 332 , the power module 333 and the current sensor 334 , for example, the filter 331 , the bus capacitor 332 , the power module 333 and the current sensor 334 are arranged on the front side of the second shell 361 .

[0116] The inlet 362 and the outlet 363 are connected to the first cooling channel 364 for transmitting cooling liquid. For example, the cooling liquid is cooling water. The cooling water flows into the first cooling channel 364 from the inlet 362 and flows out through the first cooling channel 364 through the outlet 363 .

[0117] The first cooling channel 364 is located below the power module 333 of the motor controller 200 and is used to dissipate heat from the power module 333 via coolant. Because the power module 333 generates a large amount of heat during operation, the power module 333 is disposed above the first cooling channel 364. Coolant flowing through the first cooling channel 364 dissipates heat from the power module 333.

[0118] The first cooling channel 364 is located below the power module 333 of the motor controller 200 and is used to dissipate heat from the power module 333 , thereby increasing the life of the power module 333 .

[0119] According to some embodiments of the present application, optionally, please continue to refer to Figures 3 and 8. Figure 8 is a schematic structural diagram of a cooling assembly in some embodiments of the present application. The cooling assembly 36 includes a second housing 361, an inlet 362, and an outlet 363. The second housing 361 forms a first cooling channel 364, a second cooling channel 365, and a third cooling channel 366. The first cooling channel 364, the second cooling channel 365, and the third cooling channel 366 are connected. The inlet 362 is connected to the first cooling channel 364, and the outlet 363 is connected to the third cooling channel 366.

[0120] The inlet 362 and the outlet 363 are respectively provided on the second shell 361 . For example, the outlet 363 is provided on the front side of the second shell 361 , and the inlet 362 is provided on the back side of the second shell 361 .

[0121] The first cooling channel 364 , the second cooling channel 365 and the third cooling channel 366 that are connected in sequence dissipate heat for the plurality of electronic components 33 , thereby improving the heat dissipation efficiency of the cooling assembly 36 .

[0122] According to some embodiments of the present application, optionally, the first cooling channel 364 is located below the power module 333 of the motor controller 200, the second cooling channel 365 is located below the bus capacitor 332 of the motor controller 200, and the third cooling channel 366 is located below the filter 331 of the motor controller 200.

[0123] The first cooling channel 364 is located below the power module 333 of the controller body 30, the second cooling channel 365 is located below the bus capacitor 332 of the controller body 30, and the third cooling channel 366 is located below the filter 331 of the controller body 30, thereby achieving heat dissipation for the power module 333, the bus capacitor 332 and the filter 331.

[0124] According to some embodiments of the present application, optionally, the coolant flows through the first cooling channel 364 , the second cooling channel 365 and the third cooling channel 366 in sequence to dissipate heat for the power module 333 , the bus capacitor 332 and the filter 331 .

[0125] By flowing the coolant through the first cooling channel 364, the second cooling channel 365 and the third cooling channel 366 in sequence, the power module 333, the bus capacitor 332 and the filter 331 are cooled in sequence, and the different heat generation of the power module 333, the bus capacitor 332 and the filter 331 can be cooled, thereby improving the heat dissipation efficiency and reducing the cost.

[0126] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A motor controller, wherein, Comprising: A controller body; A first terminal and a second terminal connected to the controller body, the first terminal and the second terminal being respectively disposed on different sides of the controller body.

2. The motor controller according to claim 1, wherein The first terminal and the second terminal are disposed on opposite sides of the controller body.

3. The motor controller according to claim 1 or 2, wherein, The controller body includes a filter, a bus capacitor, a power module, and a current sensor connected in sequence, the filter being connected to the first terminal, and the current sensor being connected to the second terminal.

4. The motor controller according to claim 3, wherein, The controller body includes a circuit board, and the filter, the bus capacitor, the power module, and the current sensor are disposed on the circuit board.

5. The motor controller according to claim 4, wherein, The filter, the bus capacitor, the power module, and the current sensor are spaced apart along the extending direction of the circuit board.

6. The motor controller according to claims 1-5, wherein, The controller body includes a first housing that forms an accommodation space, and the circuit board, filter, bus capacitor, power module, and current sensor of the controller body are disposed in the accommodation space.

7. The motor controller according to claim 6, wherein, The controller body includes a first copper bar and a second copper bar, the first copper bar connecting the filter and the first terminal, and the second copper bar connecting the current sensor and the second terminal.

8. The motor controller according to claim 6, wherein, The controller body includes a plurality of first fixing members, the circuit board is provided with a plurality of through holes, and the first fixing members pass through the corresponding through holes for fixing the circuit board to the first housing.

9. The motor controller according to claim 6 or 8, wherein, The bus capacitor includes an insert, and the controller body includes a second fixing member for fixing the circuit board to the insert.

10. The motor controller according to claim 6, wherein, The controller body includes a cooling assembly disposed in the accommodation space and located on a side of the filter, the bus capacitor, the power module, and the current sensor away from the circuit board.

11. The motor controller according to claim 10, wherein, The cooling assembly includes: A second housing that forms a first cooling channel; An inlet and an outlet respectively disposed on the second housing, and the inlet and the outlet are in communication with the first cooling channel for transmitting a coolant. Wherein, the first cooling channel is located below the power module for dissipating heat from the power module through the coolant.

12. The motor controller according to claim 10, wherein, The cooling assembly includes: A second housing that forms a first cooling channel, a second cooling channel, and a third cooling channel that are sequentially in communication; An inlet and an outlet respectively disposed on the second housing, and the inlet is in communication with the first cooling channel, and the outlet is in communication with the third cooling channel for transmitting a coolant.

13. The motor controller according to claim 12, wherein, The first cooling channel is located below the power module, the second cooling channel is located below the bus capacitor, and the third cooling channel is located below the filter.

14. The motor controller according to claim 13, wherein, The coolant flows through the first cooling channel, the second cooling channel, and the third cooling channel in sequence for dissipating heat from the power module, the bus capacitor, and the filter.

15. The motor controller according to claim 6, wherein, The controller body includes a third terminal mounted on the circuit board.

16. The motor controller according to claim 15, wherein, The first terminal, the second terminal, and the third terminal are respectively disposed on different sides of the controller body.

17. The motor controller according to claim 6, wherein, The controller body includes a support member installed in the first housing, and the second terminal is disposed on the support member.

18. An electrical device, wherein, Comprising: a battery; a motor controller according to any one of claims 1-17, connected to the battery; a motor connected to the motor controller, the motor controller being configured to control the battery to supply power to the motor.

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