Motor controller
By opening a heat dissipation water channel on the bottom plate of the motor controller outer box and arranging electrical components in layers, the problems of heat dissipation and electromagnetic interference under high power density are solved, achieving efficient heat dissipation and compact component layout, thereby improving the reliability and operational stability of the motor controller.
Patent Information
- Application Number
- CN202422634182.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-10-30
AI Technical Summary
Existing new energy vehicle motor controllers suffer from severe heat dissipation problems under high power density, affecting motor output performance and reliability. In addition, insufficient internal space leads to electromagnetic interference and cramped component layout.
A cooling water path is opened on the bottom plate of the motor controller's outer box, and the filter, capacitor and power module are installed on the bottom plate in sequence to form a local circulation cooling. The control board and power board are arranged in layers, and the cooling water path is used to quickly remove heat and reduce electromagnetic interference.
It improves the heat dissipation performance and space utilization of the motor controller, reduces the impact of electromagnetic interference, and enhances the reliability and environmental adaptability of the motor controller.
Smart Images
Figure CN223528363U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a motor controller belongs to motor controller technical field. BACKGROUND
[0002] The motor controller for the new energy electric vehicle is generally composed of a filter, a supporting capacitor, a power module, a control board, a driving circuit, a current sensor, an alternating current busbar, a controller shell and a cover plate, wherein the filter, the supporting capacitor, the power module, the control board and the current sensor are independently assembled in the controller shell. With the continuous development of the electric drive technology of the new energy vehicle, the electric drive is increasingly developing towards high torque density and high power density. In the use process of the high-power new energy vehicle motor controller, the supporting capacitor is converted into heat energy in the charging and discharging process, which affects the electrical performance and mechanical performance of the capacitor. The power module generates a large amount of heat under long-time operation and frequent opening and closing, which increases the failure probability and affects the motor output performance and the reliability of the vehicle drive system. Therefore, the heat dissipation of the supporting capacitor and the power module, as two core components, is particularly critical. Most motor controllers use water cooling to cool the motor controller. Cooling plates are arranged in the control shell to water-cool and dissipate heat of the power module and the capacitor. The installation space of the electrical elements in the existing motor controller shell is insufficient. The arrangement of the cooling plates further compresses the space in the shell, which affects the overall heat dissipation efficiency. Moreover, the layout of the power module, the control board and the power module in the motor controller is more cramped, which increases the near-field coupling and electromagnetic interference between the various devices in the motor controller and affects the normal operation of the motor controller. The motor is installed below the shell of the controller. The heat generated by the motor also affects the controller. This puts higher requirements on the heat dissipation of the controller shell. The poor heat dissipation performance of the existing controller shell also affects the normal operation of the controller. UTILITARIAN CONTENT
[0003] The motor controller provided by the utility model opens the heat dissipation waterway on the bottom plate of the outer box, does not occupy the space in the outer box, has high integration, can quickly take away the heat of the motor controller itself, improves the environmental adaptability of the motor controller, the power module, the control board and the power module are arranged compactly and orderly in the inner cavity of the outer box, improves the space utilization rate, facilitates debugging and maintenance, and effectively reduces the influence of the coupling electromagnetic interference on the normal operation of the motor controller.
[0004] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of:
[0005] The utility model relates to a motor controller, including the outer box, the control panel, the power module connected with the control panel, the capacitor connected with the power module, the filter connected with the capacitor, the resistor connected with the capacitor, the alternating current busbar connected with the power module are installed in the outer box, the power board of the low voltage circuit in the motor controller is powered, it is characterized by: filter, capacitor, power module are installed in the bottom plate of outer box in proper order, and the water nozzle that the water inlet end and the water outlet end of the heat dissipation waterway are respectively docked is installed on the bottom plate of outer box and is opened, and the control panel and the power board are arranged from below to above in proper order above the power module, and the control screen cover plate and the power screen cover plate arranged above the control screen cover plate are fixed in the outer box, the control panel is installed on the control screen cover plate, and the power screen cover plate is installed on the power screen cover plate.
[0006] Preferably, the outer box includes an upwardly open box body and a box cover sealingly fitted on the box body, the heat dissipation waterway is opened on the bottom plate of the box body and corresponds to the positions of the capacitor and the power module, the bottom cover plate sealing the heat dissipation waterway is fixed on the bottom plate of the box body, an S-shaped groove is opened on the bottom plate of the box body, and a plurality of S-shaped flow channels arranged side by side are opened in the groove to form the heat dissipation waterway.
[0007] Preferably, the alternating current busbar is connected with an alternating current busbar adapter module which can be plugged with the motor.
[0008] Preferably, the alternating current busbar is provided with a current sensor, and the alternating current busbar adapter module includes an adapter seat connected with the end of the alternating current busbar and an adapter plug-in busbar connected with the adapter seat and capable of being plugged with the motor, and the adapter plug-in busbar extends from the bottom of the outer box.
[0009] Preferably, the front side wall of the outer box is provided with a direct current connector connected with the capacitor, a signal connector connected with the power board, a grounding terminal and a waterproof breather valve interface, the direct current connector and the signal connector are fixed on the outer box through a connecting panel, and the grounding terminal and the waterproof breather valve interface are fastened on the outer box through screw threads.
[0010] The motor controller has the following beneficial effects:
[0011] The motor controller of the utility model installs filter, capacitor and power module in the outer box in proper order on the bottom plate of the outer box, opens heat dissipation waterway on the bottom plate of the outer box, forms the nearby circulation heat dissipation of capacitor and power module, opens heat dissipation waterway on the outer box, improves the heat dissipation performance of the outer box, and does not occupy the space in the outer box, and the integration is high, not only can quickly take away the heat of the motor controller itself, but also can absorb the heat of the motor transmitted to the outer box below the controller, improve the environmental adaptability of the motor controller, and improve the reliability of the normal operation of the motor controller.
[0012] The control panel, the power panel are sequentially arranged above the power module from bottom to top, and the control panel is supported and isolated by the control screen plate, and the power panel is supported and isolated by the power screen plate, thereby sequentially arranging the power panel, the control panel and the power module from top to bottom in layers, arranging compactly and orderly in the inner cavity of the outer box, improving the space utilization rate, facilitating debugging and maintenance, and effectively reducing the near-field coupling and electromagnetic interference between various devices and effectively reducing the influence of coupling electromagnetic interference on the normal operation of the motor controller. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 It is a schematic diagram of the motor controller in the specific embodiment.
[0014] Figure 2 It is an exploded schematic diagram of the motor controller.
[0015] Figure 3 It is a connection schematic diagram of the filter, the capacitor, the power module, the AC busbar and the AC busbar adapter module.
[0016] Figure 4 It is another exploded schematic diagram of the motor controller. DETAILED DESCRIPTION
[0017] The embodiments of the utility model will be described in detail below. Figures 1-4 The embodiments of the utility model will be described in detail below.
[0018] The motor controller comprises an outer box 1, the outer box 1 is internally provided with a control panel 2, a power module 3 connected with the control panel 2, a capacitor 4 connected with the power module 3, a filter 5 connected with the capacitor 4, a resistor 6 connected with the capacitor 4, an AC busbar 7 connected with the power module 3 and a power panel 8 for supplying power to the low-voltage circuit in the motor controller, characterized in that the filter 5, the capacitor 4 and the power module 3 are sequentially installed on the bottom plate of the outer box 1, the bottom plate of the outer box 1 is provided with a heat dissipation waterway 9, and a water nozzle 10 is installed at the water inlet end and the water outlet end of the heat dissipation waterway 9, the control panel 2 and the power panel 8 are sequentially arranged above the power module 3 from bottom to top, a control screen plate 11 is fixedly connected in the outer box, and a power screen plate 12 is arranged above the control screen plate 11, the control panel 2 is installed on the control screen plate, and the power panel 8 is installed on the power screen plate 12.
[0019] The motor controller described above, the filter 5, the capacitor 4 and the power module 3 in the outer box 1 are sequentially installed on the bottom plate of the outer box 1, the heat dissipation waterway 9 is opened on the bottom plate of the outer box 1 to form the nearby circulating heat dissipation of the capacitor 4 and the power module 3, the heat dissipation waterway 9 is opened on the outer box 1 to improve the heat dissipation performance of the outer box 1, and the space in the outer box 1 is not occupied, the integration is high, not only the heat of the motor controller itself can be quickly taken away, but also the heat of the motor below the controller transmitted to the outer box can be absorbed, the environmental adaptability of the motor controller is improved, and the reliability of the normal operation of the motor controller is improved. The control panel 2 and the power supply panel 8 are sequentially arranged above the power module 3 from bottom to top, and the control panel 2 is supported and isolated by the control screen cover 11, and the power supply panel 8 is supported and isolated by the power supply screen cover 12, to form the sequential layered isolation arrangement of the power supply panel 8, the control panel 2 and the power module 3 from top to bottom, the arrangement in the inner cavity of the outer box is compact and orderly, the space utilization rate is improved, the debugging and maintenance are facilitated, and the near-field coupling and electromagnetic interference between various devices can be effectively reduced, and the influence of the coupling electromagnetic interference on the normal operation of the motor controller is effectively reduced.
[0020] The outer box 1 includes the box body 13 with an upward opening and the box cover 14 sealingly matched on the box body 13, the heat dissipation waterway 9 is opened on the bottom plate of the box body 13 and corresponds to the positions of the capacitor 4 and the power module 3, the bottom cover plate 15 sealing the heat dissipation waterway is fixed on the bottom plate of the box body 13, the S-shaped groove 16 is opened on the bottom plate of the box body 13, and a plurality of S-shaped flow channels arranged side by side are opened in the groove 16 to form the heat dissipation waterway 9. The bottom cover plate 15 is welded on the bottom plate of the box body 13 by the friction stir welding process, which can effectively seal the heat dissipation waterway 9 while reducing the deformation rate caused by welding, the heat dissipation waterway 9 corresponds to the positions of the capacitor 4 and the power module 3, and can effectively absorb the heat generated by the two, the plurality of S-shaped flow channels arranged side by side form the heat dissipation waterway 9, the cooling water flows synchronously in the plurality of S-shaped flow channels during cooling, the heat absorption efficiency is high, and the motor controller is effectively cooled.
[0021] The AC busbar 7 is connected with the AC busbar adapter module 17 which can be plugged with the motor, and the AC busbar adapter module 17 extends out of the outer box 1. The AC busbar adapter module 17 extends out of the outer box 1 and is plugged with the motor, which saves the AC high-voltage connector and improves the convenience of connecting the motor with the AC busbar 7.
[0022] The alternating current busbar 9 is provided with a current sensor 18, the alternating current busbar switching module 17 comprises a switching seat 19 connected with the end of the alternating current busbar and a switching plug-in busbar 20 connected with the switching seat 19 and capable of being plugged with the motor, and the switching plug-in busbar 20 extends from the bottom of the outer box.
[0023] The front side wall of the outer box 1 is provided with a direct current connector 21 connected with the capacitor 4, a signal connector 22 connected with the power panel 8, a grounding terminal 23 and a waterproof air permeable valve interface 24, the direct current connector 21 and the signal connector 22 are fixed on the outer box through a connecting panel, and the grounding terminal 23 and the waterproof air permeable valve interface 24 are fastened on the outer box 1 through screw threads.
[0024] The technical scheme of the embodiments of the utility model is completely described in combination with the drawings, and it should be noted that the described embodiments are only a part of the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.
Claims
1. A motor controller comprising an outer box, a control board, a power module connected to the control board, a capacitor connected to the power module, a filter connected to the capacitor, a resistor connected to the capacitor, an AC bus connected to the power module, and a power supply board for supplying power to low-voltage circuits in the motor controller, characterized in that: The filter, the capacitor and the power module are sequentially installed on the bottom plate of the outer box, the bottom plate of the outer box is provided with a water cooling channel, and water nozzles are installed at the water inlet end and the water outlet end of the water cooling channel; the control panel and the power panel are sequentially arranged above the power module from bottom to top; the control panel is installed on the control panel plate, and the power panel is installed on the power panel plate. 2. The motor controller of claim 1, wherein: The outer box comprises a box body with an upward opening and a box cover sealingly fitted on the box body; the water cooling channel is formed on the bottom plate of the box body and corresponds to the positions of the capacitor and the power module; the bottom cover plate sealing the water cooling channel is fixed on the bottom plate of the box body; the S-shaped groove is formed on the bottom plate of the box body; and the S-shaped flow guide channels are arranged in parallel in the groove to form the water cooling channel.
3. The motor controller of claim 1, wherein: The AC busbar is provided with an AC busbar adapter module connectable with the motor.
4. The motor controller of claim 3, wherein: The AC busbar is provided with a current sensor, and the AC busbar adapter module comprises an adapter seat connected with the end of the AC busbar and an adapter busbar connected with the adapter seat and connectable with the motor, and the adapter busbar extends from the bottom of the outer box.
5. The motor controller of claim 1, wherein: The front side wall of the outer box is provided with a DC connector connected with the capacitor, a signal connector connected with the power panel, a grounding terminal and a waterproof air valve interface, the DC connector and the signal connector are fixed on the outer box through the connecting panel, and the grounding terminal and the waterproof air valve interface are fastened on the outer box through screw threads.