Dual-motor controller, electric drive assembly and vehicle

Abstract

The invention provides a dual-motor controller, an electric drive assembly and a vehicle, the dual-motor controller comprises a shell, the shell comprises a first chamber, a second chamber and a third chamber, and the first chamber, the second chamber and the third chamber are arranged in a non-communicating manner; the low-voltage assembly is arranged in the first cavity, and the low-voltage assembly comprises a control panel; the high-voltage assembly is arranged in the second cavity and comprises a capacitor module, an alternating-current busbar, a power module and a driving board, the driving board is arranged close to the control board, the alternating-current busbar is arranged far away from the control board, the power module is arranged between the alternating-current busbar and the driving board, and the power module is electrically connected with the capacitor module, the alternating-current busbar and the driving board. The driving board is electrically connected with the control board; and the filtering assembly is arranged in the third cavity, the filtering assembly comprises a filter, and the filter is electrically connected with the capacitor module. According to the dual-motor controller in the scheme, the problems of low integration level and large size of the dual-motor controller in the prior art are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of motor controllers, and in particular to a dual-motor controller, an electric drive assembly, and a vehicle. Background Art

[0002] With the rapid development of the new energy vehicle industry, demand for hybrid vehicles continues to increase, aiming to improve fuel economy while maintaining range. To enhance transmission efficiency, dual-motor drive architectures are becoming widely adopted. To meet the demands of dual-motor control, dual-motor controllers have emerged. Their input is connected to the battery, and their output is connected to the three motor phases. Dual-motor controllers are the core device for motor drive control.

[0003] Dual-motor controllers usually include dual power modules, and their overall size and weight are relatively large, and the cost is also high. Currently, dual-motor controllers in the industry have low integration and large structural dimensions, which puts higher requirements on the overall vehicle layout and is not conducive to the platform design goal of the drive system.

[0004] Currently, no effective solution has been proposed to address the problems of low integration and large size of dual-motor controllers in the existing technology. Summary of the Invention

[0005] The main purpose of the present invention is to provide a dual-motor controller, an electric drive assembly and a vehicle to solve the problems of low integration and large size of dual-motor controllers in the prior art.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a dual-motor controller is provided, comprising: a shell, the shell comprising a first chamber, a second chamber and a third chamber, the first chamber, the second chamber and the third chamber being arranged independently of each other; a low-voltage component, the low-voltage component being arranged in the first chamber, the low-voltage component comprising a control board; a high-voltage component, the high-voltage component being arranged in the second chamber, the high-voltage component comprising a capacitor module, an AC busbar, a power module and a drive board, the drive board being arranged close to the control board, the AC busbar being arranged away from the control board, the power module being arranged between the AC busbar and the drive board, the power module being electrically connected to the capacitor module, the AC busbar and the drive board, respectively, and the drive board being electrically connected to the control board; a filter component, the filter component being arranged in the third chamber, the filter component comprising a filter, and the filter being electrically connected to the capacitor module.

[0007] Furthermore, a first mounting groove and a second mounting groove are provided in the second chamber, and the first mounting groove and the second mounting groove are distributed along the width direction of the second chamber. The capacitor module is encapsulated in the first mounting groove using a potting process, and the AC busbar, power module and drive board are arranged in the second mounting groove.

[0008] Furthermore, the first connecting terminal of the power module is welded to the connecting terminal of the AC busbar, and / or the second connecting terminal of the power module is welded to the connecting terminal of the capacitor module.

[0009] Furthermore, a terminal seat is provided in the second cavity, and the terminal seat abuts against the connection terminal of the capacitor module.

[0010] Furthermore, the dual-motor controller also includes a current sensor, which has a split structure and includes: a current Hall chip, which is electrically connected to the drive board and is arranged close to the AC busbar; a magnetic ring, which is embedded in the AC busbar and has a notch in the magnetic ring, which is arranged toward the drive board, and at least part of the current Hall chip extends into the notch.

[0011] Furthermore, the filter includes a support, an X capacitor, a Y capacitor, a ferrite core and a nanocrystalline core, and the X capacitor, the Y capacitor, the ferrite core and the nanocrystalline core are respectively connected to the support.

[0012] Furthermore, the dual-motor controller also includes: a high-voltage connector, which is arranged on the outer wall of the third chamber and is electrically connected to the filter.

[0013] Furthermore, the shell includes: a first cover plate; a first box body, the first box body has a first accommodating cavity, the top of the first accommodating cavity is provided with a first opening, the first cover plate is connected at the first opening, and a first chamber is formed between the first cover plate and the first box body; a second box body, a partition plate is provided in the second box body, the partition plate divides the second box body into a second accommodating cavity and a third accommodating cavity, the second accommodating cavity is provided with a second opening, the third accommodating cavity is provided with a third opening, the second opening and the third opening are arranged opposite to each other, the bottom end of the first box body is connected at the second opening, and a second chamber is formed between the partition plate and the first box body; a second cover plate, the second cover plate is connected at the third opening, and a third chamber is formed between the second cover plate and the partition plate.

[0014] In order to achieve the above-mentioned objective, according to one aspect of the present invention, an electric drive assembly is provided, wherein the electric drive assembly includes a dual-motor controller, and the dual-motor controller is the dual-motor controller described above.

[0015] In order to achieve the above object, according to one aspect of the present invention, a vehicle is provided. The vehicle includes a dual-motor controller, and the dual-motor controller is the dual-motor controller described above.

[0016] The technical solution of the present invention is applied to integrate low-voltage components, high-voltage components and filter components in the same housing, and at the same time, the electromagnetic interference between the components is reduced by setting high and low voltage partitions, that is, the overall volume of the controller is reduced while ensuring functionality and reliability; wherein, multiple modules of the high-voltage component are arranged closely rather than dispersed, which helps to further reduce the total volume of the controller. Specifically, the drive component is set close to the control board, shortening the transmission path of the control signal, reducing signal attenuation and delay, and also reducing the electromagnetic interference when the control board receives the drive board signal, ensuring the purity of the signal; the AC busbar is used as the transmission channel for high-voltage current, which is usually accompanied by a strong electromagnetic field. Setting it away from the control board effectively isolates the electromagnetic radiation on the high-voltage side, avoids the influence of high-frequency electromagnetic interference on the control logic, and protects the normal operation of the control board; the power module is the main heat-generating component on the high-voltage side. The layout structure of the power module located between the AC busbar and the drive component allows the power module to directly contact the AC busbar, facilitating the rapid transfer and dissipation of heat, while avoiding direct heat conduction to the control board, reducing the difficulty of thermal management, and improving the overall heat dissipation efficiency. The dual-motor controller in the above scheme solves the problems of low integration and large size of the dual-motor controller in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 A cross-sectional schematic diagram of a dual-motor controller in the present invention is shown;

[0019] Figure 2 A schematic diagram showing the distribution of low-voltage components in the present invention is shown;

[0020] Figure 3 A schematic diagram showing the distribution of high-voltage components in the present invention is shown;

[0021] Figure 4 A schematic diagram showing the distribution of high-voltage components in the present invention is shown;

[0022] Figure 5 shows a schematic diagram of the distribution of current sensors in the present invention;

[0023] Figure 6 Shows a schematic structural diagram of the current sensor in the present invention;

[0024] Figure 7 A schematic diagram showing the distribution of the filter components in the present invention is shown;

[0025] Figure 8 Shows a schematic structural diagram of the filter in the present invention;

[0026] Figure 9 A schematic diagram of the peripheral structure of the dual-motor controller in the present invention is shown;

[0027] Figure 10 The figure shows a schematic diagram of the peripheral structure of the dual-motor controller in the present invention.

[0028] The above drawings include the following reference numerals:

[0029] 10. Housing;

[0030] 11. First chamber; 12. Second chamber; 13. Third chamber; 14. First cover plate; 15. First box; 16. Second box; 161. Pre-curing large cover plate; 162. Pre-curing small cover plate; 163. Respirator; 17. Second cover plate;

[0031] 20. Low voltage components;

[0032] 21. Control board; 211. Low-voltage wiring harness; 212. High-voltage interlock wiring harness; 213. Resolver temperature wiring harness;

[0033] 30. High voltage components;

[0034] 31. Capacitor module;

[0035] 32. AC busbar; 321. Power generation AC busbar; 322. Drive AC busbar;

[0036] 33. Power module; 331. Power generation module; 332. Drive power module;

[0037] 34. Driver board;

[0038] 40. Filter components;

[0039] 41. Filter;

[0040] 411. Support; 412. X capacitor; 413. Y capacitor; 414. Ferrite core; 415. Nanocrystalline core;

[0041] 50. Current sensor;

[0042] 51. Current Hall chip; 52. Magnetic ring; 521. Notch;

[0043] 60. Terminal block;

[0044] 70. High voltage connector;

[0045] 80. Low voltage connector. DETAILED DESCRIPTION

[0046] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0047] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0048] 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 are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0049] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in a variety of different forms and should not be interpreted as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of this application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for the sake of clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to represent the same devices, and thus their descriptions will be omitted.

[0050] Combine Figures 1 to 10 As shown, according to a specific embodiment of the present application, a dual-motor controller is provided.

[0051] Specifically, the dual-motor controller includes: a housing 10, a low-voltage component 20, a high-voltage component 30 and a filter component 40. The housing 10 includes a first chamber 11, a second chamber 12 and a third chamber 13, and the first chamber 11, the second chamber 12 and the third chamber 13 are arranged in a manner not connected to each other. The low-voltage component 20 is arranged in the first chamber 11, and the low-voltage component 20 includes a control board 21. The high-voltage component 30 is arranged in the second chamber 12, and the high-voltage component 30 includes a capacitor module 31, an AC busbar 32, a power module 33 and a drive board 34. The drive board 34 is arranged close to the control board 21, and the AC busbar 32 is arranged away from the control board 21. The power module 33 is arranged between the AC busbar 32 and the drive board 34. The power module 33 is electrically connected to the capacitor module 31, the AC busbar 32 and the drive board 34 respectively, and the drive board 34 is electrically connected to the control board 21. The filter assembly 40 is disposed in the third chamber 13 . The filter assembly 40 includes a filter 41 . The filter 41 is electrically connected to the capacitor module 31 .

[0052] In the embodiment of the present application, the low-voltage component 20, the high-voltage component 30 and the filter component 40 are integrated in the same housing 10, and the electromagnetic interference between the components is reduced by setting the high and low voltage partitions, that is, the overall volume of the controller is reduced while ensuring functionality and reliability; wherein, the multiple modules of the high-voltage component 30 are closely arranged rather than dispersedly arranged, which helps to further reduce the total volume of the controller. Specifically, the drive component is arranged close to the control board 21, shortening the transmission path of the control signal, reducing signal attenuation and delay, and also reducing the electromagnetic interference when the control board 21 receives the signal from the drive board 34, ensuring signal The purity of the signal; the AC busbar 32 serves as a transmission channel for high-voltage current, which is usually accompanied by a strong electromagnetic field. It is placed away from the control board 21 to effectively isolate the electromagnetic radiation on the high-voltage side, avoid the influence of high-frequency electromagnetic interference on the control logic, and protect the normal operation of the control board 21; the power module 33 serves as the main heating component on the high-voltage side. The layout structure of the power module 33 between the AC busbar 32 and the drive component allows the power module 33 to directly contact the AC busbar 32, facilitating the rapid transfer and dissipation of heat, while avoiding direct conduction of heat to the control board 21, reducing the difficulty of thermal management, and improving the overall heat dissipation efficiency. The dual-motor controller in the above scheme solves the problems of low integration and large size of the dual-motor controller in the prior art.

[0053] It is understood that the housing 10 is made of plastic, and the interiors of the first chamber 11, the second chamber 12, and the third chamber 13 are coated with a metal layer to provide electromagnetic shielding to reduce electromagnetic interference between the chambers. As an alternative embodiment, the housing 10 is made of metal.

[0054] In an exemplary embodiment of the present application, a first mounting groove and a second mounting groove are provided in the second chamber 12, and the first mounting groove and the second mounting groove are distributed along the width direction of the second chamber 12. The capacitor module 31 is encapsulated in the first mounting groove using a potting process, and the AC busbar 32, the power module 33 and the drive board 34 are arranged in the second mounting groove.

[0055] In an embodiment of the present application, the first mounting groove and the second mounting groove are distributed along the width direction of the second chamber 12. By using a potting process and customized mounting grooves, the mechanical support structure between the components can be reduced, thereby reducing the weight of the controller. The capacitor module 31 is potted in the first mounting groove using a potting process, which reduces the impact of the external environment (such as humidity, temperature changes and mechanical vibrations) on its performance, and helps to improve the electrical stability of the capacitor module 31; at the same time, the use of potting materials increases electrical isolation, helps to suppress the electromagnetic radiation generated by the capacitor module 31 during operation, and reduces interference with other components. The power module 33 and the AC busbar 32 are arranged in the same mounting groove, which helps to improve the heat conduction efficiency, so that the heat generated by the power module 33 can be transferred to the AC busbar 32 more quickly, and then dissipated more quickly through the cooling system (such as water cooling or air cooling), reducing the complexity and cost of thermal management.

[0056] like Figure 3 、 Figure 4As shown, the high-voltage component 30 is arranged in the second chamber 12. The high-voltage component 30 includes: a capacitor module 31, an AC busbar 32, a power module 33 and two drive plates 34. The AC busbar 32 includes: a power generation AC busbar 321 and a drive AC busbar 322. The power module 33 includes: a power generation power module 331 and a drive power module 332. The capacitor module 31, the power module 33 and the AC busbar 32 are sequentially distributed along the width direction of the second chamber 12, that is, in the width direction of the second chamber 12, the power module 33 is located between the capacitor module 31 and the AC busbar 32; the AC busbar 32, the power module 33 and the drive board 34 are sequentially distributed along the height direction of the second chamber 12, that is, in the height direction of the second chamber 12, the power module 33 is located between the AC busbar 32 and the drive board 34; the power generation AC busbar 321 and the drive AC busbar 322 are sequentially distributed along the length direction of the second chamber 12, the power generation power module 331 and the drive power module 332 are sequentially distributed along the length direction of the second chamber 12, and the two drive boards 3 4 are sequentially distributed along the length of the second chamber 12. In the height direction of the second chamber 12, the power generation module 331 is located obliquely above the power generation AC busbar 321 and is electrically connected to the power generation AC busbar 321. One of the drive boards 34 is located directly above the power generation module 331 and is electrically connected to the power generation module 331. In the height direction of the second chamber 12, the drive power module 332 is located obliquely above the drive AC busbar 322 and is electrically connected to the drive AC busbar 322. Another drive board 34 is located directly above the drive power module 332 and is electrically connected to the drive power module 332. The power module 33 and the AC busbar 32 are both fixed to the second chamber 12 by bolts.

[0057] like Figure 2As shown, a control board 21 is installed in the first chamber 11 and is secured to the first chamber 11 with bolts. A low-voltage connector 80 is screwed to the outer wall of the first chamber 11, with a portion of the low-voltage connector 80 extending into the first chamber 11. A high-voltage connector 70 is screwed to the outer wall of the third chamber 13, with a portion of the high-voltage connector 70 extending into the third chamber 13. A low-voltage wiring harness 211 is installed in the first chamber 11. One end of the low-voltage wiring harness 211 is connected to the low-voltage connector 80, and the other end is connected to the control board 21. A high-voltage interlock wiring harness 212 is installed in the first chamber 11. One end of the high-voltage interlock wiring harness 212 is connected to the high-voltage connector 70, and the other end is connected to the control board 21. A resolver temperature wiring harness 213 is installed in the first chamber 11. One end of the resolver temperature wiring harness 213 is connected to the control board 21, and the other end is connected to the hybrid motor. The control board 21 is connected to the drive board 34 through a first wiring harness. One end of the first wiring harness is plug-connected to the control board 21 through a connector, and the other end of the first wiring harness is connected to the drive bridge through a flat cable.

[0058] In an exemplary embodiment of the present application, the first connection terminal of the power module 33 is welded to the connection terminal of the AC busbar 32 , and / or the second connection terminal of the power module 33 is welded to the connection terminal of the capacitor module 31 .

[0059] In the embodiments of the present application, welding can reduce the number and volume of connectors compared to traditional connection methods such as bolts. This means there's no need to overthink the positioning and space reserved for connectors, making the controller's internal structure more compact and helping to reduce its overall size. Furthermore, compared to bolted connections, welding can provide lower contact resistance and greater mechanical stability. In high-current, high-voltage applications, welded connections can ensure electrical path continuity, reduce energy loss and temperature rise at the electrical connection, and lower the probability of failure due to loose connections or corrosion.

[0060] like Figure 3 As shown, the capacitor module 31 is electrically connected to the power generation module 331 and the drive power module 332 respectively by laser welding, wherein the connection terminal of the capacitor module 31 and the second connection terminal of the power module 33 are connected by two welds. The power generation module 331 is electrically connected to the power generation AC busbar 321 by laser welding, wherein the first connection terminal of the power generation module 331 and the connection terminal of the power generation AC busbar 321 are connected by two welds; the drive power module 332 is electrically connected to the drive AC busbar 322 by laser welding, wherein the first connection terminal of the drive power module 332 and the connection terminal of the drive AC busbar 322 are connected by two welds.

[0061] Preferably, a terminal seat 60 is provided in the second chamber 12 , and the terminal seat 60 abuts against the connection terminal of the capacitor module 31 .

[0062] In an embodiment of the present application, the thickness of the connecting terminal of the capacitor module 31 is relatively small, and the connecting terminal of the capacitor module 31 is supported by the terminal seat 60 to prevent the connecting terminal of the capacitor module 31 from being deformed due to the pressure of the welding tooling, thereby also improving the welding quality.

[0063] like Figure 3 As shown, there are two terminal blocks 60, and the two terminal blocks 60 are respectively fixed in the second chamber 12 by bolts. The two terminal blocks 60 are distributed along the length direction of the second chamber 12, and the two terminal blocks 60 are respectively supported on the bottom of the connection terminal of the capacitor module 31, wherein one terminal block 60 is used to support the second connection terminal of the power generation module 331 and the connection terminal of the capacitor module 31, and the other terminal block 60 is used to support the second connection terminal of the drive power module 332 and the connection terminal of the capacitor module 31.

[0064] In an exemplary embodiment of the present application, the dual-motor controller further includes a current sensor 50. The current sensor 50 is a split structure and includes a current Hall effect chip 51 and a magnetic ring 52. The current Hall effect chip 51 is electrically connected to the driver board 34 and is positioned near the AC busbar 32. The magnetic ring 52 is embedded in the AC busbar 32 and has a notch 521 disposed toward the driver board 34. At least a portion of the current Hall effect chip 51 extends into the notch 521.

[0065] In the embodiment of the present application, a magnetic ring 52 is embedded in the AC busbar 32 to concentrate the magnetic field generated by the current on the AC busbar 32. The current Hall effect chip 51 extends into the notch 521 of the magnetic ring 52, allowing it to more directly sense changes in the magnetic field within the magnetic ring 52. Due to the magnetic field concentration effect of the magnetic ring 52, the current Hall effect chip 51 can more accurately detect the current magnitude and transmit the current signal to the control board 21 via the two driver boards 34. Compared to the traditional modular current sensor 50, the split sensor requires less installation space and is more flexible in layout, which helps achieve a more compact design and further reduces the overall size of the controller.

[0066] like Figure 5 、 Figure 6As shown, six groups of current sensors 50 are installed inside the controller. The six groups of current sensors 50 are spaced apart along the length of the second chamber 12. Three groups of current sensors 50 are located between the AC busbar 321 and one of the driver boards 34, and the other three groups of current sensors 50 are located between the AC busbar 321 and the other driver board 34. A magnetic ring 52 is embedded in the AC busbar 32. The magnetic ring 52 has a notch 521 facing the driver board 34. The AC busbar 32 has a groove corresponding to the notch 521. At least part of the current Hall effect chip 51 extends into the groove, that is, at least part of the current Hall effect chip 51 extends into the notch 521.

[0067] In an exemplary embodiment of the present application, the filter 41 includes a support 411, an X capacitor 412, a Y capacitor 413, a ferrite core 414 and a nanocrystalline core 415, and the X capacitor 412, the Y capacitor 413, the ferrite core 414 and the nanocrystalline core 415 are respectively connected to the support 411.

[0068] In the embodiment of the present application, the X capacitor 412 and the Y capacitor 413 can reduce differential-mode and common-mode noise, while the ferrite core 414 and the nanocrystalline core 415 can effectively suppress both high-frequency and low-frequency electromagnetic noise. By designing a variety of filtering structures, unnecessary reflections and distortion on the signal line are reduced, ensuring signal integrity and stable operation of the system, thereby improving the electromagnetic compatibility level of the controller.

[0069] In an exemplary embodiment of the present application, the dual-motor controller further includes: a high-voltage connector 70 , which is disposed on an outer wall of the third chamber 13 and is electrically connected to the filter 41 .

[0070] In the embodiment of the present application, the high-voltage connector 70 is placed on the outer wall of the third chamber 13, away from the control board 21 and the low-voltage circuits. This effectively isolates the potential dangers of high voltage and high current. By combining physical and electrical isolation, electrical safety is improved, and the risk of safety accidents caused by high-voltage electric shock or short circuits is reduced. The filter 41 is directly electrically connected to the high-voltage connector 70 and can instantly suppress and filter the electromagnetic interference of the signal entering from the high-voltage connector 70, ensuring that the signal entering the motor controller is clean and stable, reducing the impact of electromagnetic interference on subsequent circuits, and improving the overall anti-interference capability and electromagnetic compatibility of the system.

[0071] like Figure 7As shown, the high-voltage connector 70 is connected to the outer wall of the third chamber 13 by screws, and a portion of the high-voltage connector 70 extends into the third chamber 13. The filter 41 is disposed in the third chamber 13, and is disposed on a side close to the high-voltage connector 70. The filter 41 is fixed in the third chamber 13 by bolts, with one end of the filter 41 electrically connected to the high-voltage connector 70, and the other end of the filter 41 electrically connected to the capacitor module 31.

[0072] In an exemplary embodiment of the present application, the housing 10 includes: a first cover plate 14, a first housing 15, a second housing 16, and a second cover plate 17. The first housing 15 has a first accommodating cavity, the top of which is provided with a first opening. The first cover plate 14 is connected to the first opening, and a first chamber 11 is formed between the first cover plate 14 and the first housing 15. A partition is provided within the second housing 16, which divides the second housing 16 into a second accommodating cavity and a third accommodating cavity. The second accommodating cavity has a second opening, and the third accommodating cavity has a third opening. The second opening and the third opening are arranged opposite each other. The bottom end of the first housing 15 is connected to the second opening, and a second chamber 12 is formed between the partition plate and the first housing 15. The second cover plate 17 is connected to the third opening, and a third chamber 13 is formed between the second cover plate 17 and the partition plate.

[0073] like Figure 9 、 Figure 10 As shown, the first chamber 11, the second chamber 12, and the third chamber 13 are arranged in sequence along the height direction of the housing 10. The second box body 16 is provided with a large pre-curing cover plate 161, a small pre-curing cover plate 162, and a respirator 163. The large pre-curing cover plate 161 and the small pre-curing cover plate 162 are fixed to the second box body 16 by bolts, and the respirator 163 is fixed to the large pre-curing cover plate 161 by snaps.

[0074] According to another specific embodiment of the present invention, an electric drive assembly is provided. The electric drive assembly includes a dual-motor controller, and the dual-motor controller is the dual-motor controller in the above embodiment.

[0075] According to another specific embodiment of the present invention, a vehicle is provided. The vehicle includes a dual-motor controller, and the dual-motor controller is the dual-motor controller in the above embodiment.

[0076] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0077] 1. The low-voltage component 20, the high-voltage component 30, and the filter component 40 are separately arranged in the first chamber 11, the second chamber 12, and the third chamber 13, which are not connected to each other. The components are integrated in the same housing 10. At the same time, the electromagnetic interference between the components is reduced by the high and low voltage zoning. That is, the overall volume of the controller is reduced while ensuring functionality and reliability.

[0078] 2. The multiple modules of the high-voltage component 30 are arranged closely rather than dispersed, which helps to further reduce the total volume of the controller. Specifically, the drive component is arranged close to the control board 21, shortening the transmission path of the control signal, reducing signal attenuation and delay, and also reducing the electromagnetic interference when the control board 21 receives the signal from the drive board 34, ensuring the purity of the signal; the AC busbar 32 serves as a transmission channel for high-voltage current and is usually accompanied by a strong electromagnetic field. Setting it away from the control board 21 effectively isolates the electromagnetic radiation on the high-voltage side, avoids the influence of high-frequency electromagnetic interference on the control logic, and protects the normal operation of the control board 21; the power module 33 serves as the main heat-generating component on the high-voltage side. The layout structure of the power module 33 between the AC busbar 32 and the drive component enables the power module 33 to directly contact the AC busbar 32, facilitating the rapid transfer and dissipation of heat, while avoiding direct conduction of heat to the control board 21, reducing the difficulty of thermal management, and improving the overall heat dissipation efficiency.

[0079] 3. The first connection terminal of the power module 33 and the connection terminal of the AC busbar 32 are welded, and the second connection terminal of the power module 33 and the connection terminal of the capacitor module 31 are welded. Compared with traditional connection methods such as bolts, welding can reduce the number and volume of connectors, that is, there is no need to consider the positioning and space reservation of connectors too much, making the internal structure of the controller more compact and helping to reduce the overall size of the controller. At the same time, compared with bolt connections, welding can provide lower contact resistance and stronger mechanical stability. In high current and high voltage application environments, welded connections can ensure the continuity of the electrical path, reduce energy loss and temperature rise at the electrical connection, and reduce the probability of failure due to loose connections or corrosion.

[0080] 4. Compared with the traditional modular current sensor 50, the split sensor requires less installation space and is more flexible in layout, which helps to achieve a more compact design and further reduce the overall size of the controller.

[0081] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0082] In addition to the above, it should be noted that references to "one embodiment," "another embodiment," "an embodiment," and the like in this specification refer to specific features, structures, or characteristics described in conjunction with that embodiment as included in at least one embodiment generally described in this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in conjunction with any embodiment, it is intended that such feature, structure, or characteristic, when implemented in conjunction with other embodiments, also falls within the scope of the present invention.

[0083] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0084] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A dual-motor controller, characterized in that: include: A housing (10), the housing (10) comprising a first chamber (11), a second chamber (12), and a third chamber (13), wherein the first chamber (11), the second chamber (12), and the third chamber (13) are arranged to be disconnected from each other; A low-pressure component (20), the low-pressure component (20) being disposed in the first chamber (11), the low-pressure component (20) comprising a control panel (21); A high-voltage component (30), the high-voltage component (30) is arranged in the second chamber (12), the high-voltage component (30) includes a capacitor module (31), an AC busbar (32), a power module (33) and a drive board (34), the drive board (34) is arranged close to the control board (21), the AC busbar (32) is arranged away from the control board (21), the power module (33) is arranged between the AC busbar (32) and the drive board (34), the power module (33) is electrically connected to the capacitor module (31), the AC busbar (32) and the drive board (34), and the drive board (34) is electrically connected to the control board (21); A filter assembly (40), the filter assembly (40) is arranged in the third chamber (13), the filter assembly (40) includes a filter (41), and the filter (41) is electrically connected to the capacitor module (31).

2. The dual-motor controller according to claim 1, characterized in that: A first mounting groove and a second mounting groove are provided in the second chamber (12), the first mounting groove and the second mounting groove being distributed along the width direction of the second chamber (12), the capacitor module (31) being potted in the first mounting groove by a potting process, and the AC busbar (32), the power module (33) and the drive board (34) being provided in the second mounting groove.

3. The dual-motor controller according to claim 1 or 2, characterized in that: The first connecting terminal of the power module (33) is welded to the connecting terminal of the AC busbar (32), and / or the second connecting terminal of the power module (33) is welded to the connecting terminal of the capacitor module (31).

4. The dual-motor controller according to claim 3, characterized in that: A terminal seat (60) is provided in the second chamber (12), and the terminal seat (60) abuts against the connection terminal of the capacitor module (31).

5. The dual-motor controller according to claim 1, characterized in that: The dual-motor controller further comprises a current sensor (50), wherein the current sensor (50) is a split structure and comprises: a current Hall chip (51), the current Hall chip (51) being electrically connected to the driving board (34), and the current Hall chip (51) being arranged close to the AC busbar (32); A magnetic ring (52) is embedded in the AC busbar (32), the magnetic ring (52) is provided with a notch (521), the notch (521) is arranged toward the drive plate (34), and at least a portion of the current Hall chip (51) extends into the notch (521).

6. The dual-motor controller according to claim 1, characterized in that: The filter (41) comprises a support (411), an X capacitor (412), a Y capacitor (413), a ferrite core (414) and a nanocrystalline core (415), wherein the X capacitor (412), the Y capacitor (413), the ferrite core (414) and the nanocrystalline core (415) are respectively connected to the support (411).

7. The dual-motor controller according to claim 1, characterized in that: The dual-motor controller further includes: A high-voltage connector (70) is provided on the outer wall of the third chamber (13), and the high-voltage connector (70) is electrically connected to the filter (41).

8. The dual-motor controller according to claim 1, characterized in that: The housing (10) comprises: a first cover plate (14); A first box body (15), wherein the first box body (15) has a first accommodating cavity, a top end of the first accommodating cavity is provided with a first opening, the first cover plate (14) is connected to the first opening, and the first chamber (11) is formed between the first cover plate (14) and the first box body (15); a second box body (16), wherein a partition is provided in the second box body (16), the partition dividing the second box body (16) into a second accommodating cavity and a third accommodating cavity, the second accommodating cavity is provided with a second opening, the third accommodating cavity is provided with a third opening, the second opening and the third opening are arranged opposite to each other, the bottom end of the first box body (15) is connected to the second opening, and the second chamber (12) is formed between the partition and the first box body (15); A second cover plate (17), wherein the second cover plate (17) is connected to the third opening, and the third chamber (13) is formed between the second cover plate (17) and the partition plate.

9. An electric drive assembly, comprising a dual-motor controller, characterized in that: The dual-motor controller is the dual-motor controller according to any one of claims 1 to 8.

10. A vehicle comprising a dual motor controller, characterized in that: The dual-motor controller is the dual-motor controller according to any one of claims 1 to 8.

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