New energy automobile motor controller structure

Abstract

The invention relates to a new energy automobile motor controller structure, and the structure comprises a first housing, the interior of the first housing is divided into a plurality of mutually independent shielding cavities through a plurality of separators, and the shielding cavities at least comprise a filter cavity, an intermediate device cavity, and a three-phase copper bar cavity; the direct-current copper bar and the first shell are integrally formed, one end of the direct-current copper bar extends into the filter cavity, and the other end of the direct-current copper bar extends into the middle device cavity; the three-phase copper bar and the first shell are integrally formed, and the input end of the three-phase copper bar extends into the middle device cavity; the electromagnetic shielding sealing element is arranged at the opening end of each shielding cavity; and the second shell is hermetically connected with the first shell through an electromagnetic shielding sealing element. According to the utility model, the isolation piece and the electromagnetic shielding sealing piece which are integrally formed form a completely-closed independent shielding cavity, so that the problem of electromagnetic leakage caused by a gap between a baffle plate and a shell in a traditional structure is fundamentally solved, and meanwhile, the modality of the upper cover of the controller can be greatly improved by mounting screws on a sealing flange surface; and the NVH performance is effectively optimized.

Description

Technical Field

[0001] This application relates to the field of motor controller technology, and in particular to a structure for a new energy vehicle motor controller. Background Technology

[0002] The motor controller is the heart of a new energy vehicle, its most crucial component. It converts direct current (DC) into alternating current (AC) through the high-speed switching of power semiconductor devices (such as IGBTs and MOSFETs). This "switching" process generates significant electromagnetic interference, particularly due to the rapid, nanosecond-level changes in voltage and current, producing intense high-frequency electromagnetic noise. Furthermore, the switching frequency and its higher harmonics cover a wide frequency range, from tens of kHz to hundreds of MHz. These harmonics are easily emitted through wires (conducted interference) and into space (radiated interference). Failure to effectively shield and suppress this interference can lead to a series of fatal problems, causing malfunctions or damage to the motor controller itself.

[0003] Currently, electromagnetic leakage exists in motor controllers on the market during practical applications. For example, electromagnetic interference generated by components such as X capacitors and Y capacitors in the filter cavity may affect surrounding circuits, causing electromagnetic leakage. This significantly impacts the operation of surrounding components and module circuits of each EMC filter, making the motor controller susceptible to electromagnetic interference from the input AC filter and the output HV filter during use. Summary of the Invention

[0004] This application provides a new energy vehicle motor controller structure to solve the problem in related technologies where electromagnetic waves generated by filtering devices cannot be completely isolated, leading to electromagnetic leakage.

[0005] Firstly, a new energy vehicle motor controller structure is provided, which includes: The first housing is internally divided into several independent shielded cavities by multiple insulating components. The shielded cavities include at least a filter cavity, an intermediate device cavity, and a three-phase copper busbar cavity. A DC copper busbar is integrally formed with the first housing, with one end of the DC copper busbar extending into the filter cavity and the other end extending into the intermediate device cavity; A three-phase copper busbar is integrally formed with the first housing, and its input end extends into the cavity of the intermediate device. An electromagnetic shielding seal is disposed at the opening end of each of the shielding cavities; The second housing is sealed to the first housing via the electromagnetic shielding seal.

[0006] In some embodiments, the intermediate device cavity is divided into a thin-film capacitor cavity and a power module cavity by a first partition; The DC copper busbar extends into the thin-film capacitor cavity, and the three-phase copper busbar extends into the power module cavity.

[0007] In some embodiments, a second partition is provided inside the power module cavity, and the second partition and the inner wall of the first housing form a low-voltage signal plug-in cavity for installing a low-voltage signal plug-in.

[0008] In some embodiments, a current sensor core is also included, disposed in the power module cavity.

[0009] In some embodiments, the first housing, the separator, the first partition, the second partition, and the second housing are all made of electromagnetic shielding grade thermoplastic material.

[0010] In some embodiments, the DC copper busbar and the three-phase copper busbar are pre-placed as inserts in the injection mold and are solidified and connected to the first housing.

[0011] In some embodiments, the top of the isolator is provided with a sealing flange surface, and the second housing is fixed to the sealing flange surface in sections by fasteners.

[0012] In some embodiments, the electromagnetic shielding seal is configured to cover electromagnetic interference in the 10kHz to 40GHz frequency band and has a dynamic range ≥90dB.

[0013] Secondly, a new energy vehicle motor controller is provided, which adopts the aforementioned new energy vehicle motor controller structure.

[0014] Thirdly, a new energy vehicle is provided, which adopts the aforementioned new energy vehicle motor controller.

[0015] This application provides a structure for a new energy vehicle motor controller. By setting an integrally formed isolation component inside the first housing, the internal space is divided into independent shielded cavities such as a filter cavity, an intermediate device cavity, and a three-phase copper busbar cavity. An electromagnetic shielding seal is set at the opening end of each cavity, which, together with the second housing, forms a completely closed shielded cavity. This achieves spatial isolation and electromagnetic shielding for each functional module, fundamentally solving the electromagnetic leakage problem caused by the gap between the filter component and the housing in traditional motor controllers. It effectively avoids the impact of electromagnetic interference generated by the EMC filter component in the filter cavity on surrounding devices and module circuits, and improves the electromagnetic compatibility performance of the whole machine.

[0016] Meanwhile, the DC copper busbar, three-phase copper busbar, and first housing are integrally molded, achieving electrical connection between the filter cavity, intermediate device cavity, and three-phase copper busbar cavity while maintaining the independent shielding performance of each cavity. Compared to the technical defect of traditional structures where conductors protruding from the shielding cavity lead to a significant deterioration in shielding effectiveness, this application fundamentally solves the problem of conductors protruding from the shielding cavity and damaging its integrity through the integral molding design of the copper busbar and housing, further ensuring and improving the overall electromagnetic shielding effect. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a new energy vehicle motor controller provided in an embodiment of this application; Figure 2 This is a schematic diagram of each cavity of the new energy vehicle motor controller structure provided in the embodiments of this application; Figure 3 This is a schematic diagram of the internal structure layout of a new energy vehicle motor controller provided in an embodiment of this application; Figure 4 for Figure 2 Schematic diagram of the cross-sectional structure of AA (including the second housing and drive control board).

[0019] In the diagram: 1. First housing; 2. Isolator; 3. Filter cavity; 4. Intermediate device cavity; 401. Thin-film capacitor cavity; 402. Power module cavity; 5. Three-phase copper busbar cavity; 6. DC copper busbar; 7. Three-phase copper busbar; 8. Electromagnetic shielding seal; 9. Second housing; 10. First partition; 11. Second partition; 12. Low-voltage signal plug-in cavity; 13. Fastener; 14. Filter; 15. Thin-film capacitor; 16. Power module; 17. Low-voltage signal plug-in; 18. Drive control board. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] The motor controller contains low-voltage, low-power control units, such as microcontrollers, responsible for the overall system control algorithm; sensors that accurately sample current, voltage, and temperature; and drive circuits that precisely control the switching of power devices. These sensitive components act as the "brain and nerves" of the inverter. Strong switching noise can interfere with the sampling signal, causing current / voltage sampling distortion and leading to incorrect judgments by the control system; disrupting the control signal may cause power devices to turn on or off incorrectly, resulting in a short circuit in the bridge arm and burnout; and triggering protection malfunctions may cause the system to mistakenly believe a fault has occurred due to interference, leading to unwarranted shutdowns. Simultaneously, it causes electromagnetic pollution to external systems, interfering with the operation of other systems (electronic systems, electrical control systems, electromagnetic management systems, signal transmission systems, etc.).

[0022] Currently, most electromagnetic shielding methods on the market involve installing barrier walls on the housing. However, because the horizontal gaps between the various EMC filter components and the housing cannot be completely blocked, the electromagnetic waves generated by the X capacitor, Y capacitor, and filter inductor cannot be completely isolated, leading to electromagnetic leakage. This significantly impacts the operation of surrounding components and module circuits (e.g., these EMC filter components act as exposed interference sources affecting the control signal quality of the main power board). Consequently, the motor controller is subjected to electromagnetic interference from the input AC filter and the output HV filter. Furthermore, this type of EMC filter shielding structure only provides partial electromagnetic shielding for the X capacitor, Y capacitor, and filter inductor within the filter housing. Its electromagnetic shielding effect on the external environment and space is limited, resulting in strong electromagnetic leakage and spatial radiation, thus affecting the overall EMC performance and stability of the vehicle. Therefore, improving the magnetic shielding performance of the EMC filter components of the AC filter at the input end and the HV filter at the output end of the controller, so as to reduce the electromagnetic leakage of the EMC filter components to other internal components of the EMC filter and the external environment, is a technical problem that urgently needs to be solved in this field.

[0023] First, some of the technical terms used in this application will be explained to help those skilled in the art understand this application.

[0024] IGBT: Insulated Gate Bipolar Transistor; MOSFET: Metal-Oxide-Semiconductor Field-Effect Transistor; EMC: Electromagnetic Compatibility.

[0025] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0026] Firstly, the embodiments of this application provide a new energy vehicle motor controller structure, which can solve the problem in related technologies that the electromagnetic waves generated by the filtering devices cannot be completely isolated, resulting in electromagnetic leakage.

[0027] like Figures 1 to 4 As shown, this application provides a new energy vehicle motor controller structure, which includes: The first housing 1 is divided into several independent shielded cavities by multiple insulating components 2. The shielded cavities include at least a filter cavity 3, an intermediate device cavity 4, and a three-phase copper busbar cavity 5. The DC copper busbar 6 is integrally formed with the first housing 1. One end of the DC copper busbar 6 extends into the filter cavity 3, and the other end extends into the intermediate device cavity 4. The three-phase copper busbar 7 is integrally formed with the first housing 1, and its input end extends into the intermediate device cavity 4; Electromagnetic shielding seal 8 is provided at the opening end of each shielding cavity; The second housing 9 is sealed to the first housing 1 by an electromagnetic shielding seal 8.

[0028] In this embodiment, the shielding cavity includes a filter cavity 3, an intermediate device cavity 4, and a three-phase copper busbar cavity 5, such as Figure 2 As shown, the black dashed lines represent the boundaries of each cavity. Filter cavity 3 is used to install EMC filtering components, such as X capacitors, Y capacitors, and filter inductors, to filter electromagnetic interference from the input power supply, suppress conducted interference from the external power grid, and prevent electromagnetic noise generated inside the controller from being conducted to the outside through the power lines. Intermediate component cavity 4 is used to install film capacitors and power modules, smoothing the DC bus voltage and converting DC to AC to drive the motor. Three-phase copper busbar cavity 5 is used to install three-phase copper busbars, transmitting the three-phase AC power generated by the power module to the external motor, and shielding high-frequency radiation interference generated by the high-current output circuit through an independent cavity.

[0029] In some alternative embodiments, the shielding cavity may be divided into more cavities according to function.

[0030] In this embodiment, the electromagnetic shielding seal 8 is an annular sealing ring. Grooves are provided at the upper ends of the isolator 2 and the first housing 1. The sealing ring surrounds each shielding cavity, completely shielding and isolating the filter cavity 3, the thin-film capacitor cavity 401, the power module cavity 402, and the three-phase copper busbar cavity 5. This ensures that when the second housing 9 is pressed, the sealing ring undergoes elastic deformation, filling all microscopic gaps between the electromagnetic seal 8 and the first housing 1 and the second housing 9, forming a continuous and low-impedance electrical connection, thereby guaranteeing the overall sealing and electromagnetic continuity of each shielding cavity.

[0031] Furthermore, the DC copper busbar 6 and the three-phase copper busbar 7 are pre-placed as inserts in the injection mold and solidified together with the first housing 1. The pre-treated copper busbars are placed in the injection mold as inserts. After the mold is closed, molten electromagnetic shielding-grade thermoplastic material is injected into the mold. After the plastic cools and solidifies, the copper busbars are tightly bonded to the first housing, forming an inseparable integral structure. The DC copper busbar 6 passes through the isolation piece 2 between the filter cavity 3 and the intermediate device cavity 4, with one end extending into the filter cavity 3 and the other end extending into the thin-film capacitor cavity 401. The three-phase copper busbar 7 passes through the isolation piece 2 between the intermediate device cavity 4 and the three-phase copper busbar cavity 5, with one end extending into the power module cavity 402 and the other end extending into the three-phase copper busbar cavity 5.

[0032] Furthermore, the intermediate device cavity 4 is divided into a thin-film capacitor cavity 401 and a power module cavity 402 by the first partition 10; the DC copper busbar 6 extends into the thin-film capacitor cavity 401, and the three-phase copper busbar 7 extends into the power module cavity 402. The thin-film capacitor cavity 401 is used to install the thin-film capacitor 15, and the power module cavity 402 is used to install the power module 16. A drive control board 18 is installed on the top of the thin-film capacitor cavity 401 and the power module cavity 402 to realize the electrical connection between the thin-film capacitor 15 and the power module 16.

[0033] In this application, the film capacitor 15 and the filter 14 are installed in independent cavities. The filter 14, capacitor, power module, and three-phase copper busbar all require electrical connections. If the conductors extend out of the shielded cavity, it will significantly degrade the shielding effectiveness of the shield. They are connected via an integrally injection-molded DC copper busbar. Encapsulating adhesive is used to seal and cure the joint between the copper busbar and the housing, further fixing the conductors and enhancing the isolation and sealing between cavities. This design allows the filter cavity 3, film capacitor cavity 401, power module cavity 402, and three-phase copper busbar cavity 5 to achieve the necessary power transmission path while maintaining their respective independent shielding structures. Finally, the power module 16 and drive control board 18 are installed sequentially to complete the internal assembly of the entire unit. This integrated solution simplifies the processing and assembly process, reduces manufacturing costs, and effectively reduces the overall weight of the module. By efficiently utilizing the internal space of the first housing 1, higher power density is achieved, and the number of fasteners and assembly steps are reduced, improving product consistency and reliability.

[0034] Furthermore, a second partition 11 is provided inside the power module cavity 402. The second partition 11 and the inner wall of the first housing 1 form a low-voltage signal plug-in cavity 12 for installing a low-voltage signal plug-in 17. The low-voltage signal plug-in cavity 17 realizes the connection between the low-voltage control signal and the external control unit. It separates the low-voltage weak current area from the high-voltage strong current area through physical isolation, preventing electromagnetic interference from the high-voltage side from coupling to the low-voltage control system, and ensuring control accuracy and system stability.

[0035] Furthermore, the first housing 1, the separator 2, the first partition 10, the second partition 11, and the second housing 9 are all made of electromagnetic shielding grade thermoplastic material. Preferably, electromagnetic shielding grade PPS material is used, which is prepared by adding a certain proportion of electromagnetic shielding functional fillers to a conventional PPS resin matrix through blending or filling processes, thereby giving the originally insulating PPS material excellent conductivity and electromagnetic shielding effectiveness.

[0036] The motor controller in this application uses electromagnetic shielding-grade thermoplastic material instead of traditional metal materials such as aluminum alloy or magnesium alloy. Its electromagnetic shielding effectiveness covers the entire frequency band from low to high frequencies. While maintaining high shielding effectiveness, it also possesses advantages such as good mechanical strength, elastic modulus, thermal conductivity, and NVH performance, meeting all requirements for the controller unit housing. Although the intrinsic thermal conductivity of conventional thermoplastic materials is still lower than that of metal materials such as aluminum alloy, the motor controller in this application mainly adopts a water-cooled heat dissipation structure. Heat is mainly conducted to the water-cooling plate through the power module and then carried away by the circulating coolant. Therefore, the thermal conductivity of the housing material itself is not the main bottleneck for overall heat dissipation. Under this architecture, the main functions of the first housing 1 are to provide electromagnetic shielding, structural support, and environmental sealing. The electromagnetic shielding-grade thermoplastic material can meet these requirements while achieving significant weight reduction and cost advantages.

[0037] Furthermore, the top of the isolator 2 is provided with a sealing flange surface, and the second housing 9 is fixed to the sealing flange surface by fasteners 13. There are multiple fasteners 13, which are evenly distributed on the sealing flange surface. The sealing flange surface is combined with the second housing 9 through the electromagnetic shielding seal 8 to form a completely closed cavity, thereby improving the electrical continuity between contact points.

[0038] In this embodiment, the fastener 13 is a screw. The mounting screws on the sealing flange face can greatly improve the modal characteristics of the controller's second housing 9, effectively optimizing NVH performance. By arranging multiple screw fastening points on the sealing flange face, vibration energy can be dispersed and transmitted to the first housing 1. Utilizing the frictional damping between the contact surfaces and the viscoelastic damping characteristics of the electromagnetic shielding seal 8, some mechanical energy is converted into heat energy and dissipated, thereby suppressing amplitude and reducing vibration response and noise radiation.

[0039] Furthermore, the second housing 9 is divided into three areas for screw mounting, which greatly improves the modal characteristics of the second housing. Dividing the second housing 9 into three areas for screw mounting further optimizes the stiffness distribution of each area, making the modal shapes more uniform and avoiding obvious resonance peaks in local areas, thereby achieving better vibration and noise suppression effects across the entire frequency band.

[0040] Furthermore, the electromagnetic shielding seal 8 is configured to cover electromagnetic interference in the 10kHz to 40GHz frequency band, with a dynamic range ≥90dB. As a preferred embodiment, the electromagnetic shielding seal 8 may be made of a conductive elastomer composite material with silicone rubber as the matrix material and doped with metal fillers. Preferably, the metal filler is silver-coated aluminum powder.

[0041] Furthermore, it also includes a current sensor core, which is disposed in the power module cavity 402. The current sensor core is integrally injection molded with the power module 16, which can better utilize the internal space of the housing and achieve higher power density. The integrated design means fewer fasteners and fewer assembly steps.

[0042] This application provides a new energy vehicle motor controller structure. By setting an integrally formed isolation component 2 inside the first housing 1, the internal space is divided into independent shielded cavities such as filter cavity 3, intermediate device cavity 4, and three-phase copper busbar cavity 7. An electromagnetic shielding seal 8 is set at the opening end of each cavity, which, together with the second housing 9, forms a completely closed shielded cavity. This achieves spatial isolation and electromagnetic shielding of each functional module, fundamentally solving the electromagnetic leakage problem caused by the gap between the filter component and the housing in traditional motor controllers. It effectively avoids the impact of electromagnetic interference generated by the EMC filter component in the filter cavity on surrounding devices and module circuits, and improves the electromagnetic compatibility performance of the whole machine.

[0043] Meanwhile, the DC copper busbar 6, the three-phase copper busbar 7, and the first housing 1 are integrally molded, achieving electrical connection between the filter cavity 3, the intermediate device cavity 4, and the three-phase copper busbar cavity 5 while maintaining the independent shielding performance of each cavity. Compared to the technical defect of traditional structures where conductors protruding from the shielding cavity lead to a significant deterioration in shielding effectiveness, this application fundamentally solves the problem of conductors protruding from the copper busbar and housing damaging the integrity of the shielding cavity through the integral molding design, further ensuring and improving the overall electromagnetic shielding effect.

[0044] In summary, the purpose of this invention is to address the shortcomings of the existing technology by providing a new energy vehicle motor controller structure. This structure aims to achieve superior EMC performance and driving experience for the motor controller within the same volume or weight; to achieve a miniaturized and lightweight design for the same output power; to realize high performance within a given space; to offer flexible layout; to facilitate platform modularization; and to be more suitable for integrated housing architecture design of electric drive assemblies. It also improves overall shielding effectiveness, uses less material, reduces cost, and enhances the power density, reliability, and stability of the electric drive system.

[0045] Secondly, such as Figures 2 to 3As shown, this application also provides a new energy vehicle motor controller, adopting the aforementioned new energy vehicle motor controller structure. Specifically, in this motor controller, a filter 14 is installed in the filter cavity 3 for filtering electromagnetic interference from the input power supply; a thin film capacitor 15 is installed in the thin film capacitor cavity 401 for smoothing the DC bus voltage; a power module 16 is installed in the power module cavity 402 for converting DC power into AC power to drive the motor; a three-phase copper busbar 7 is installed in the three-phase copper busbar cavity 5 for transmitting the three-phase AC power generated by the power module to the external motor; and a low-voltage signal plug-in 17 is installed in the low-voltage signal plug-in cavity 12 for connecting the low-voltage control signal to the external control unit. By installing the above-mentioned functional components in mutually independent and completely enclosed shielded cavities, and using the DC copper busbar 6 and three-phase copper busbar 7 integrally formed with the first housing 1 for electrical interconnection, this motor controller can achieve efficient power transmission and signal control while ensuring independent shielding of each functional module, thereby improving the electromagnetic compatibility performance, power density, and reliability of the entire machine.

[0046] Thirdly, this application also provides a new energy vehicle that uses the aforementioned new energy vehicle motor controller.

[0047] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0048] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0049] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A structure for a new energy vehicle motor controller, characterized in that, It includes: The first housing (1) is divided into several independent shielded cavities by multiple isolation components (2). The shielded cavities include at least a filter cavity (3), an intermediate device cavity (4), and a three-phase copper busbar cavity (5). A DC copper busbar (6) is integrally formed with the first housing (1). One end of the DC copper busbar (6) extends into the filter cavity (3), and the other end extends into the intermediate device cavity (4). The three-phase copper busbar (7) is integrally formed with the first housing (1), and its input end extends into the intermediate device cavity (4). An electromagnetic shielding seal (8) is provided at the opening end of each of the shielding cavities; The second housing (9) is sealed to the first housing (1) by the electromagnetic shielding seal (8).

2. The structure of the new energy vehicle motor controller as described in claim 1, characterized in that: The intermediate device cavity (4) is divided into a thin film capacitor cavity (401) and a power module cavity (402) by the first partition (10). The DC copper busbar (6) extends into the thin-film capacitor cavity (401), and the three-phase copper busbar (7) extends into the power module cavity (402).

3. The structure of the new energy vehicle motor controller as described in claim 2, characterized in that: The power module cavity (402) is provided with a second partition (11), which together with the inner wall of the first housing (1) forms a low-voltage signal plug-in cavity (12) for installing a low-voltage signal plug-in (17).

4. The structure of the new energy vehicle motor controller as described in claim 2, characterized in that: It also includes a current sensor core, which is disposed in the power module cavity (402).

5. The structure of the new energy vehicle motor controller as described in claim 3, characterized in that: The first housing (1), the isolation component (2), the first partition (10), the second partition (11), and the second housing (9) are all made of electromagnetic shielding grade thermoplastic material.

6. The structure of the new energy vehicle motor controller as described in claim 1, characterized in that: The DC copper busbar (6) and the three-phase copper busbar (7) are pre-placed in the injection mold as inserts and are solidified and connected to the first housing (1).

7. The structure of the new energy vehicle motor controller as described in claim 1, characterized in that: The top of the isolation component (2) is provided with a sealing flange surface, and the second housing (9) is fixed to the sealing flange surface in sections by fasteners (13).

8. The structure of the new energy vehicle motor controller as described in claim 1, characterized in that: The electromagnetic shielding seal (8) is configured to cover electromagnetic interference in the frequency band from 10 kHz to 40 GHz and has a dynamic range ≥ 90 dB.

9. A new energy vehicle motor controller, characterized in that: The structure of the new energy vehicle motor controller as described in any one of claims 1-8 is adopted.

10. A new energy vehicle, characterized in that: The new energy vehicle motor controller as described in claim 9 is used.

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