A motor controller power component

Abstract

The present invention discloses a motor controller power component, wherein the heat dissipation waterway is a polygonal three-dimensional structure, a power module is installed on the outer surface of the heat dissipation waterway; the hollow structure formed by the heat dissipation waterway is used to place a film capacitor; the drive board is installed on the power module; the control board support plate is located above the film capacitor, and the control board is installed on the control board support plate; the film capacitor is connected to the DC side of the power module, and the AC side of the power module is connected to the output copper bus, and a current sensor is installed on the output copper bus. The present invention has the characteristics of compact structure and high integration, can improve the power density of the motor controller, and is convenient for integration with other components.

Description

Technical Field

[0001] The present invention relates to the technical field of motor controllers, and in particular to a motor controller power component. Background Art

[0002] At present, with the increasing problems of energy shortage and environmental pollution, people are looking for more efficient and environmentally friendly ways of travel, among which new energy vehicles stand out. New energy vehicles are electric vehicles with electric drive as the core, and the motor controller is one of the core components of electric drive. In order to improve the comprehensive performance of electric vehicles, the performance of key components of electric vehicles is required to be continuously improved. Among them, for motor controllers, the operating voltage is required to be increased, the size is getting smaller and smaller, and the weight is getting lighter and lighter. In general, the motor control power density is required to be increased and the integration is improved.

[0003] In order to improve the power density and integration of motor controllers, it is generally achieved through new technologies and innovative designs. Among them, new technologies mainly include new devices and new processes, such as power components with higher power density and high-integration device applications; innovative design is to effectively improve the power density and integration of motor controllers through innovative structural design based on existing mature components. The present invention effectively improves the power density and integration of motor controllers through innovative design. At the same time, the results of the present invention can be directly used in motor controller products and all-in-one assemblies, and can also be used in integrated systems of motors, motor controllers and gearboxes / reducers, effectively improving the integration and performance of the integrated system. Summary of the invention

[0004] The present invention provides a motor controller power component for an electric vehicle, which adopts an innovative structural design to effectively increase the power density and integration of the motor controller power component.

[0005] The technical solution adopted by the present invention is: a motor controller power component, including a heat dissipation water path, a power module, a film capacitor, a drive board, a control board, a control board support board, an output copper bus and a current sensor; the heat dissipation water path is a polygonal three-dimensional structure, and the power module is installed on the outer surface of the heat dissipation water path; the hollow structure formed by the heat dissipation water path is used to place the film capacitor; the drive board is installed on the power module; the control board support board is located above the film capacitor, and the control board is installed on the control board support board; the film capacitor is connected to the DC side of the power module, and the AC side of the power module is connected to the output copper bus, and the current sensor is installed on the output copper bus.

[0006] Furthermore, the heat dissipation water channel includes a water channel interface, a water channel cover plate and a heat dissipation water channel body. Both ends of the heat dissipation water channel body are connected to the water channel interface, and the side of the heat dissipation water channel is sealed by the water channel cover plate.

[0007] Furthermore, the DC input and AC output of the power module are respectively located at two ends of the heat dissipation water path.

[0008] Furthermore, the control board and the driving board are connected via a wiring harness, and the current sensor and the control board are connected via a wiring harness.

[0009] The beneficial effects of the present invention are as follows: the motor controller power component of the present invention can improve the power density and integration of the motor controller; at the same time, the present invention can also be integrated into a motor or a gearbox / reducer to improve the system integration. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the present invention;

[0011] Figure 2 It is a schematic diagram of the polygonal heat dissipation water channel structure;

[0012] Figure 3 It is a schematic diagram of the DC side of the present invention;

[0013] Figure 4 It is a schematic diagram of the AC side of the present invention;

[0014] In the figure: 1-control board, 2-control board support plate, 3-film capacitor, 3a-film capacitor DC input copper busbar, 3b-film capacitor output copper busbar, 4-heat dissipation water channel, 4a-water channel interface, 4b-water channel cover, 4c-heat dissipation water channel body, 5-power module, 6-drive board, 7-output copper busbar, 7a-power module output copper busbar, 7b-output copper busbar connection, 8-current sensor. DETAILED DESCRIPTION

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] The present invention is an innovative structural design of a motor controller power component for electric vehicles, which effectively provides the power density and integration of the power component by rationally integrating the heat dissipation water path, film capacitor (DC-Link capacitor), power module, circuit board, etc. The heat dissipation water path is also the supporting structure of the present invention, which is used for installation or integration with other components.

[0017] like Figure 1As shown, the heat dissipation water circuit 4 in the present invention is the main body of the entire component, and other components are arranged and designed around the heat dissipation water circuit 4. This embodiment takes a quadrilateral three-dimensional structure as an example, including a control board 1, a control board support plate 2, a film capacitor 3, a heat dissipation water circuit 4, a power module 5, a drive board 6, an output copper bus 7 and a current sensor 8. The power module 5 is fixed on three surfaces of the heat dissipation water circuit 4, and the drive board 6 is welded to the power module 5. The film capacitor 3 is placed in the hollow space formed by the heat dissipation water circuit 4, and the film capacitor 3 is fixed to the heat dissipation water circuit 4 with screws. After installing the film capacitor 3, the control board support plate 2 is installed on the film capacitor 3; the control board 1 is installed on the control board support plate 2.

[0018] like Figure 1 and Figure 3 As shown, the film capacitor output copper bus 3b is fixedly connected to the DC side of the power module 5; the high-voltage DC power supply of the power module 5 is connected to the film capacitor DC input copper bus 3a.

[0019] like Figure 2 As shown, the water channel interface 4a is the water inlet and outlet of the heat dissipation water channel 4, and the order of the water inlet and outlet can be adjusted according to the specific application. The interior of the heat dissipation water channel body 4c is a heat dissipation water channel, which is used to dissipate the power module 5 fixed on the heat dissipation water channel, and is also used to install the power module 5 and place and fix the film capacitor 3. The main structure is also designed with fixedly connected mounting holes for fixing and connecting other power components. The upper and lower sides of the heat dissipation water channel are sealed by the water channel cover plate 4b, and the water channel cover plate 4b can be connected to the heat dissipation water channel body 4c by welding technology, or it can be connected by other methods.

[0020] The control board 1 and the drive board 6 are connected by a wiring harness. Figure 4 As shown, the output of the power module 5 is connected to the three-phase line of the motor through the power module output copper bar 7a and the output copper bar connection 7b, and the current sensor 8 is fixed on the output copper bar 7.

[0021] The present invention has the characteristics of compact structure and high integration, and can be applied to an all-in-one assembly, and can also be used to integrate and communicate with a motor into an all-in-one power assembly.

Claims

1. A motor controller power assembly, characterized in that: It includes a control board, a control board support board, a film capacitor, a heat dissipation water path, a power module, a drive board, an output copper busbar and a current sensor; the power module is fixed on three surfaces of the heat dissipation water path, and the drive board is welded on the power module; the film capacitor is placed in the hollow space formed by the heat dissipation water path, and the film capacitor is fixed to the heat dissipation water path with screws; the control board support board is installed on the film capacitor; the control board is installed on the control board support board; the film capacitor output copper busbar is fixedly connected to the DC side of the power module; the high-voltage DC power supply of the power module is connected to the DC input copper busbar of the film capacitor; the water path interface It is the water inlet and outlet of the heat dissipation waterway. The interior of the heat dissipation waterway body is a heat dissipation waterway, which is used to dissipate heat for the power module fixed on the heat dissipation waterway, and is also used to install the power module and place and fix the film capacitor; the main structure is also designed with fixed installation holes for fixing and connecting other power components; the upper and lower sides of the heat dissipation waterway are sealed by waterway cover plates, and the waterway cover plates are connected to the heat dissipation waterway body; the control board and the drive board are connected by a wiring harness; the output of the power module is connected to the three-phase line of the motor through the power module output copper bus and the output copper bus, and the current sensor is fixed on the output copper bus.

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