Motor controller and driving assembly

Abstract

The utility model relates to a motor controller and a driving assembly, the motor controller comprises a first shell and a driving control board, the first shell comprises a containing cavity, the driving control board is located in the containing cavity, the driving control board is used for being connected with a motor, and the driving control board comprises a board body, a control element and a driving element, the plate body is fixed to the first shell, the control element and the driving element are integrated on the plate body, the driving element is used for providing power for the motor, and the control element is used for controlling the working state of the motor. The driving element and the control element are arranged on the board body of the driving and controlling board, so that the number of printed circuit boards (Printed Circuit Board-PCB) which is arranged on the motor controller and used for installing the driving element and the control element is reduced, the occupied space of the driving unit and the control unit in the motor controller is reduced, the integration degree in the motor controller is improved, and the cost of the motor controller is reduced. And the size is reduced, so that the motor controller is miniaturized and light.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicles, in particular to a motor controller and a drive assembly. Background Art

[0002] New energy vehicles typically feature a motor controller, a power battery, and a motor. The motor controller's input is connected to the power battery, and its output is connected to the motor to drive and control the motor's rotation. The motor controller typically includes a housing and components such as a control board, driver board, capacitor module, and filter located within the housing's cavity. However, the low level of integration between the various components within the cavity hinders the motor controller's portability. Utility Model Content

[0003] The present application provides a motor controller and a drive assembly for solving the problem that the degree of integration between the components in the housing cavity of the motor controller is low, which is not conducive to the lightweight design of the motor controller.

[0004] In a first aspect, the present application provides a motor controller, comprising a first housing and a drive control board. The first housing includes a receiving cavity. The drive control board is located within the receiving cavity and is configured to connect to a motor. The drive control board includes a plate body, a control element, and a drive element. The plate body is fixed to the first housing. The control element and the drive element are integrated on the plate body. The drive element is configured to provide power to the motor, and the control element is configured to control the operating state of the motor.

[0005] In this solution, driving elements and control elements are provided on the board body to integrate the traditional control board and driving board into a driving control board with the performance of driving motor and controlling motor, which is conducive to reducing the printed circuit board (PCB) for installing driving elements and control elements set in the motor controller, thereby helping to reduce the space occupied by the driving unit and control unit in the motor controller, improving the degree of integration in the motor controller, and helping to reduce the volume, thereby making the motor controller miniaturized and lightweight.

[0006] In this solution, the motor controller further includes a connector, which is arranged on the drive control board. The connector includes a copper busbar for electrically connecting to the motor, and the surface of the copper busbar for connecting to the motor is flat.

[0007] In this solution, the motor controller further includes a capacitor module, a filter, and an alternating module. Along the thickness direction of the motor controller, the alternating module is located between the first housing and the drive control board and is electrically connected to the drive control board.

[0008] The connector, the drive control board, the alternating module, the capacitor module, and the filter are accommodated in the accommodating cavity along the length direction of the motor controller.

[0009] In this solution, the accommodating cavity includes a first cavity, a second cavity, a third cavity, and a fourth cavity distributed along the length direction of the motor controller. The filter is accommodated in the first cavity, the capacitor module is accommodated in the second cavity, the alternating module is accommodated in the third cavity, and the connector is accommodated in the fourth cavity.

[0010] Along the thickness direction of the motor controller, the depth of the second cavity is greater than the depths of the first cavity, the third cavity, and the fourth cavity.

[0011] In this solution, along the width direction of the motor controller, the size of the first cavity is smaller than the sizes of the second cavity, the third cavity, and the fourth cavity.

[0012] In this solution, the accommodating cavity is provided with a cooling cavity. Along the thickness direction of the motor controller, the projection of the alternating module can at least cover the cooling cavity. The alternating module also includes a heat-conducting column, which extends into the cooling cavity.

[0013] In this solution, the cooling chamber includes a liquid storage chamber, a first diverter groove, a second diverter groove, a liquid inlet and a liquid outlet. The first diverter groove is connected to the liquid inlet and the liquid storage chamber, and the second diverter groove is connected to the liquid outlet and the liquid storage chamber. The liquid inlet and the liquid outlet are located on both sides of the liquid storage chamber and are diagonally arranged. The first diverter groove and the second diverter groove are located on both sides of the liquid storage chamber and are diagonally arranged.

[0014] In this solution, the cooling cavity is rectangular, and the liquid inlet and the liquid outlet are located on a first diagonal line of the cooling cavity, and the first diverter groove and the second diverter groove are located on a second diagonal line of the cooling cavity.

[0015] In this solution, the alternating module includes a second shell and a chip installed in the second shell. The chip is detachably connected to the second shell, and the second shell is fixed to the first shell.

[0016] A second aspect of the present application provides a drive assembly, which includes a power battery, a motor and a motor controller, and the motor controller is the motor controller described above.

[0017] The driving element is electrically connected to the power battery, and the control element is electrically connected to the motor.

[0018] It should be understood that the foregoing general description and the following detailed description are merely illustrative and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a motor controller provided in this application in a specific embodiment;

[0020] Figure 2 for Figure 1 Exploded diagram;

[0021] Figure 3 This is a schematic structural diagram of a motor controller provided in this application from another perspective in a specific embodiment;

[0022] Figure 4 for Figure 1 sectional view of ;

[0023] Figure 5 This is a schematic structural diagram of the first housing provided in this application in a specific embodiment;

[0024] Figure 6 This is a structural schematic diagram of the first housing provided in this application from another perspective in a specific embodiment;

[0025] Figure 7 for Figure 5 sectional view of ;

[0026] Figure 8 This is a schematic structural diagram of the alternating module provided in this application in a specific embodiment.

[0027] Description of reference numerals:

[0028] 1- Motor controller;

[0029] 11- first housing;

[0030] 111-accommodation chamber;

[0031] 1111-first cavity;

[0032] 1112-second cavity;

[0033] 1113-third cavity;

[0034] 1114-the fourth cavity;

[0035] 1115-cooling chamber;

[0036] 1115a-liquid inlet;

[0037] 1115b-liquid outlet;

[0038] 1115c-first diversion trough;

[0039] 1115d-second diversion trough;

[0040] 1115e-liquid storage chamber;

[0041] 112-Reinforcement ribs;

[0042] 113-Liquid outlet;

[0043] 114- positioning portion;

[0044] 115- low voltage connector;

[0045] 116-vent valve;

[0046] 117-cover plate;

[0047] 118-wiring hole;

[0048] 1181-blocking cover;

[0049] 12-Drive control board;

[0050] 121-Plate body;

[0051] 122-installation part;

[0052] 13-connector;

[0053] 131-copper busbar;

[0054] 132-Reinforcement Department;

[0055] 14-capacitor module;

[0056] 141-first input terminal;

[0057] 142-first output terminal;

[0058] 15- filter;

[0059] 16- alternating module;

[0060] 161-thermal column;

[0061] 162- second housing;

[0062] 163-chip;

[0063] 164- second input terminal;

[0064] 165- second output terminal;

[0065] 17-Liquid inlet pipe.

[0066] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application. DETAILED DESCRIPTION

[0067] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0068] In a specific embodiment, the present application is further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0069] It should be clear that the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0070] The terms used in the embodiments of the present application are for the purpose of describing specific embodiments only and are not intended to limit the present application. The singular forms "a", "an", "the" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.

[0071] It should be understood that the term "and / or" as used herein is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0072] It should be noted that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described based on the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it should be understood that when it is mentioned that an element is connected to another element "on" or "under", it can not only be directly connected to the other element "on" or "under", but also be indirectly connected to the other element "on" or "under" through an intermediate element.

[0073] New energy vehicles include a drive assembly, which is used to convert chemical energy into kinetic energy for the vehicle. It is also the core component that determines the vehicle's power, energy consumption and other performance. The drive assembly generally includes a power battery, a motor controller and a motor. The input end of the motor controller is connected to the power battery, and the output end of the motor controller is connected to the motor to convert the electrical energy stored in the power battery into the electrical energy required by the motor. Among them, the motor controller is usually equipped with a capacitor module, a filter, a drive board and a control board. The drive board can control the magnitude and direction of the input current of the motor to drive the motor to rotate and achieve direction control and speed control. At the same time, the drive board can also automatically adjust the current and phase sequence according to the control signal to ensure stable rotation of the motor. The control board is used to accurately control the motor motion parameters and can monitor and adjust the current, speed, position, etc. during the motor movement in real time.

[0074] The driver board is equipped with driver components, which generally include an inverter (i.e., a combination of an intelligent power module (IMP) or an insulated-gate bipolar transistor (IGBT) and a diode), a power conversion unit (including a rectifier, power protection unit, and discharge unit), a current sampling unit (using a digital sampling chip or resistor sampling), and a communication unit. The control board is equipped with control components, which generally include a main control chip, output circuit, filter circuit, encryption chip, and other components. However, the degree of integration between the various components within the motor controller is low, resulting in poor space utilization, which is not conducive to miniaturization and lightweighting of the motor controller.

[0075] To this end, the embodiment of the present application provides a motor controller 1 to solve the above technical problems. Figure 1 and Figure 2 As shown, the motor controller 1 includes a first shell 11 and a drive control board 12. The first shell 11 includes a accommodating cavity 111. The drive control board 12 is located in the accommodating cavity 111. The drive control board 12 is used to connect with the motor, and the drive control board 12 includes a plate body 121, a control element and a drive element. The plate body 121 is fixed to the first shell 11. The control element and the drive element are integrated on the plate body 121. The drive element is used to provide power to the motor, and the control element is used to control the working state of the motor.

[0076] In this embodiment, driving elements and control elements are provided on the board body 121 to integrate the traditional control board and driving board into a driving control board 12 having the performance of driving a motor and controlling a motor, which is beneficial to reducing the number of printed circuit boards (PCBs) for installing driving elements and control elements provided in the motor controller 1, thereby reducing the space occupied by the driving unit and the control unit in the motor controller 1, improving the degree of integration in the motor controller 1, and reducing the volume, thereby making the motor controller 1 miniaturized and lightweight.

[0077] In one possible embodiment, the control elements on a conventional control board are integrated into the gaps between the drive elements on the driver board, so that the driver board with the control elements and the drive elements forms the drive control board 12 of the present application, thereby facilitating manufacturing. The drive elements and the control elements can also be arranged on both sides of the plate body 121 along the thickness direction, saving space, thereby reducing the volume of the plate body 121 and further improving the degree of integration within the motor controller 1.

[0078] In one possible implementation, Figure 1 and Figure 2 As shown, the motor controller 1 further includes a connector 13, which is provided on the drive control board 12. The connector 13 includes a copper bus 131 for electrically connecting to the motor. The surface of the copper bus 131 for connecting to the three-phase AC line of the motor is flat.

[0079] In this embodiment, connector 13 is used to electrically connect to the motor. The surface of copper busbar 131 used for connection to the motor is flat, meaning that copper busbar 131 has no bends. This further reduces the space occupied within motor controller 1 and helps increase the connection area between motor controller 1 and the motor, improving the reliability and convenience of the electrical connection between the two. Furthermore, connector 13 is provided with a reinforcement portion 132, which protrudes along the thickness of motor controller 1 toward first housing 11. Reinforcement portion 132 helps to increase the structural strength of connector 13.

[0080] In one possible implementation, Figure 2As shown, the first shell 11 is provided with a positioning portion 114, and along the thickness direction of the motor controller 1, a recessed mating portion (not shown in the figure) is provided on the side of the drive control board 12 facing the first shell 11. The positioning portion 114 can cooperate with the mating portion so that the drive control board 12 can be accurately installed in the first shell 11 and the convenience of installing the drive control board 12 is improved. In addition, the drive control board 12 is provided with a mounting portion 122 on the side of the mating portion facing away from the first shell 11, and the connector 13 is provided with a mounting hole, and the mounting portion 122 is used to connect to the connector 13 through the mounting hole. Among them, the mounting hole can be a long hole, that is, an elliptical hole, and the mounting portion 122 is a hexagonal copper stud to improve the mountability of the connector 13.

[0081] In one possible implementation, Figure 1-Figure 3 As shown, the motor controller 1 further includes a capacitor module 14, a filter 15, and an alternating current module 16. Along the thickness of the motor controller 1, the alternating current module 16 is located between the first housing 11 and the drive control board 12 and is electrically connected to the drive control board 12. The connector 13, the drive control board 12, the alternating current module 16, the capacitor module 14, and the filter 15 are housed within the accommodating cavity 111 along the length of the motor controller 1.

[0082] In this embodiment, the filter 15 is used to reduce electromagnetic interference and improve the quality of the output waveform, the capacitor module 14 is used to store energy and smooth the voltage, and the alternating module 16 is used to efficiently convert and control the current. In this embodiment, the connector 13, the drive control board 12 and the alternating module 16, the capacitor module 14, and the filter 15 are electrically connected along the length direction of the motor controller 1 and accommodated in the accommodating cavity 111, which is conducive to reducing the size of the motor controller 1 along the width direction, making the system path in the motor controller 1 as short as possible, which is conducive to saving layout space, and making the input end (filter 15 electrically connected to the high-voltage DC line) and the output end (connector 13 electrically connected to the three-phase AC line) of the motor controller 1 arranged along the minimum path. In addition, the alternating module 16 is arranged on the side of the accommodating cavity 111 that is biased towards the capacitor module 14, so that the high-voltage area formed by the alternating module 16 and the capacitor module 14 is more concentrated, ensuring the area of the low-voltage area, and realizing the high-voltage zoning design.

[0083] In one possible embodiment, Figure 2 and Figure 5As shown, the filter 15 has a high-voltage interface, and the first housing 11 is provided with a wiring hole 118 so that the high-voltage DC line connected to the power battery is electrically connected to the high-voltage interface through the wiring hole 118, and the filter 15 includes a magnetic ring, an X capacitor and a Y capacitor. Among them, the magnetic ring, the X capacitor and the Y capacitor can be replaced and adjusted according to the electromagnetic compatibility requirements (Electromagnetic Compatibility—EMC). Specifically, magnetic rings of different materials and X capacitors and Y capacitors of different capacitance values can be selected according to needs, which is conducive to improving the adaptability and scalability of the filter 15, thereby improving the adaptability of the motor controller 1.

[0084] In one possible implementation, Figure 2 As shown, the filter 15 and the capacitor module 14 are connected by bolts so that the two can achieve the shortest connection path. The capacitor module 14 includes a first input terminal 141 and a first output terminal 142, both of which extend along the thickness direction of the motor controller 1, which is convenient for the potting of the capacitor module 14, and the capacitor module 14 is fixed to the first shell 11 by bolts so that the capacitor module 14 and the first shell 11 can be detachably connected, so that a heat dissipation pad can be added between the capacitor module 14 and the first shell 11 according to the requirements of capacitor modules 14 with different power, which is convenient for platform application.

[0085] In one possible implementation, Figure 2 and Figure 8 As shown, the alternating module 16 has a second input terminal 164 and a second output terminal 165. The second input terminal 164 is welded to the drive control board 12. The motor controller 1 also includes a current sensor located at the second output terminal 165. The signal pin and fixed pin of the current sensor are both welded to the drive control board 12, thereby electrically connecting the drive control board 12 and the alternating module 16 and achieving an integrated layout. At the same time, the second input terminal 164 is welded to the first output terminal 142 to electrically connect the capacitor module 14 to the alternating module 16.

[0086] In one possible implementation, Figure 2 As shown, the motor controller 1 also includes a low-voltage connector 115, a breather valve 116, a cover plate 117, and a plug cap 1181. The low-voltage connector 115 is integrated on the drive control board 12 and is used to connect the vehicle and motor controller 1 signals. The breather valve 116, cover plate 117, and plug cap 1181 are all mounted on the first housing 11. The breather valve 116 is used to prevent water and air from leaking and to balance the pressure difference between the inside and outside of the motor controller 1. The cover is used to seal the three-phase AC line connected to the motor. The plug cap 1181 blocks the wiring hole 118 to seal the high-voltage DC line connected to the power battery.

[0087] In one possible implementation, Figure 1 、 Figure 5 and Figure 7 As shown, the accommodating cavity 111 includes a first cavity 1111, a second cavity 1112, a third cavity 1113, and a fourth cavity 1114 distributed along the length direction of the motor controller 1. The filter 15 is accommodated in the first cavity 1111, the capacitor module 14 is accommodated in the second cavity 1112, the alternating module 16 is accommodated in the third cavity 1113, and the connector 13 is accommodated in the fourth cavity 1114, which is beneficial to the space utilization of the first shell 11, and is beneficial to reducing the size of the motor controller 1 and making the motor controller 1 lightweight.

[0088] In this embodiment, along the thickness direction of the motor controller 1, the depth of the second cavity 1112 is greater than the depths of the first cavity 1111, the third cavity 1113, and the fourth cavity 1114. Since the thickness of the capacitor module 14 is greater than the thickness of the filter 15, the drive control board 12, the alternating module 16, and the connector 13, the depth of the second cavity 1112 is greater than the depths of the first cavity 1111, the third cavity 1113, and the fourth cavity 1114, so that after the capacitor module 14, the drive control board 12, the alternating module 16, the filter 15, and the connector 13 are installed in the first shell 11, the height position difference between the components in the accommodating cavity 111 is small, which facilitates the electrical connection between the first input terminal 141 of the capacitor module 14 and the filter 15, and the electrical connection between the first output terminal 142 of the capacitor module 14 and the second input terminal 164 of the alternating module 16, which is beneficial to improving the convenience of assembling the components in the motor controller 1. At the same time, Figure 7 As shown, the depth of the second cavity 1112 is greater than the depth of the first cavity 1111, the depth of the first cavity 1111 is greater than the depth of the third cavity 1113, and the depth of the third cavity 1113 is greater than the depth of the fourth cavity 1114, so that the cross-section of the accommodating cavity 111 is stepped, which is beneficial to improving the strength of the first shell 11 and can also change the mode of the first shell 11 of the motor controller 1, thereby changing the path of sound propagation and reducing the possibility of resonance, which is beneficial to improving the noise, vibration and harshness (NVH) performance of new energy vehicles.

[0089] In one possible implementation, Figure 6 and Figure 7 As shown, the outer bottom wall of the first shell 11 is also provided with raised reinforcing ribs 112, which is beneficial to improving the strength of the surface of the motor controller 1 and can further change the mode of the first shell 11 of the motor controller 1, thereby further improving the NVH performance of the car.

[0090] In one possible implementation, Figure 5 As shown, along the width direction of the motor controller 1 , the size of the first cavity 1111 is smaller than the sizes of the second cavity 1112 , the third cavity 1113 and the fourth cavity 1114 .

[0091] In this embodiment, along the width direction of the motor controller 1, since the size of the filter 15 is smaller than the size of the capacitor module 14, the drive control board 12 and the alternating module 16, the size of the first cavity 1111 is smaller than the first cavity 1111 and the third cavity 1113, and part of the structure of the connector 13 and the drive control board 12 is located in the fourth cavity 1114, so the size of the first cavity 1111 is smaller than the fourth cavity 1114, thereby making the size of each cavity along the width direction of the motor controller 1 match the size of the components accommodated therein, which is beneficial to reducing the size of the first shell 11 along the width direction, and further beneficial to reducing the size of the motor controller 1 along the width direction, thereby improving the degree of integration of the components in the motor controller 1.

[0092] In one possible implementation, Figure 1 and Figure 5 As shown, the shape of the first cavity 1111 is roughly conical. Along the direction from the filter 15 to the connector 13, the size of the first cavity 1111 along the width direction of the motor controller 1 gradually increases, which is convenient for connecting the capacitor module 14 and the filter 15, and the size of the side of the first cavity 1111 away from the capacitor module 14 is roughly the same as the size of the filter 15, which is beneficial to reducing the size of the first cavity 1111, and further beneficial to reducing the size of the first shell 11.

[0093] In one possible implementation, Figure 2-4 As shown, the accommodating cavity 111 is provided with a cooling cavity 1115 . Along the thickness direction of the motor controller 1 , the projection of the alternating module 16 can at least cover the cooling cavity 1115 . The alternating module 16 also includes a heat-conducting column 161 , which extends into the cooling cavity 1115 .

[0094] In this embodiment, there is coolant in the cooling cavity 1115, and the cooling cavity 1115 is used to dissipate heat for the alternating module 16. Specifically, the alternating module 16 is provided with a heat-conducting column 161 extending along the thickness direction of the motor controller 1. The heat-conducting column 161 can extend into the cooling cavity 1115 so that the heat generated inside the alternating module 16 can be conducted to the cooling cavity 1115 through the heat-conducting column 161 for dissipation, which is beneficial to improving the heat dissipation capacity of the alternating module 16, so as to ensure the working performance of the alternating module 16, and further beneficial to improving the reliability, stability and service life of the motor controller 1.

[0095] In one possible embodiment, the cooling chamber 1115 includes an opening, a sealing ring is provided on the outer periphery of the opening, and the heat conductive column 161 extends into the cooling chamber 1115 through the opening. When the alternating module 16 is installed, the alternating module 16 can press the sealing ring, and the alternating module 16 can block the opening, thereby reducing the risk of coolant leakage and improving the safety of the motor controller 1.

[0096] In one possible implementation, Figure 4 and Figure 5 As shown, the cooling chamber 1115 includes a liquid storage chamber 1115e, a first diverter groove 1115c, a second diverter groove 1115d, a liquid inlet 1115a and a liquid outlet 1115b. The first diverter groove 1115c is connected with the liquid inlet 1115a and the liquid storage chamber 1115e, and the second diverter groove 1115d is connected with the liquid outlet 1115b and the liquid storage chamber 1115e. The liquid inlet 1115a and the liquid outlet 1115b are located on both sides of the liquid storage chamber 1115e and are diagonally arranged. The first diverter groove 1115c and the second diverter groove 1115d are located on both sides of the liquid storage chamber 1115e and are diagonally arranged.

[0097] In this embodiment, the first housing 11 is further connected to a liquid inlet pipe 17, which is used to pass coolant into the cooling chamber 1115. The coolant flows through the liquid inlet 1115a into the first diverter groove 1115c, and then flows through the first diverter groove 1115c into the liquid storage chamber 1115e. The coolant then flows through the liquid storage chamber 1115e into the second diverter groove 1115d, and then flows through the second diverter groove 1115d into the liquid outlet 1115b. Therefore, the liquid inlet 1115a and the liquid outlet 1115b are located on either side of the liquid storage chamber 1115e and are arranged diagonally. This helps to increase the resistance of the coolant to flow in the liquid storage chamber 1115e, reduce the flow rate of the coolant in the liquid storage chamber 1115e, and increase the residence time of the coolant in the liquid storage chamber 1115e, thereby improving the heat dissipation effect of the alternating module 16. At the same time, the first and second diverter grooves 1115c, 1115d are located on either side of the liquid storage chamber 1115e and are arranged diagonally to extend the coolant flow path along the length of the motor controller 1, thereby improving the uniformity of the coolant's heat dissipation from the alternating module 16. Furthermore, the liquid inlet 1115a is located in the middle of the motor controller 1 in the height direction to facilitate exhaust during the coolant filling process.

[0098] Among them, such as Figure 5 As shown, the first shell 11 is also provided with a liquid outlet 113. Along the height direction of the motor controller 1, the liquid outlet 113 is located above the liquid outlet 1115b and the liquid inlet 1115a, so that the coolant can fill the entire liquid storage cavity 1115e, further improving the heat dissipation capacity of the alternating module 16.

[0099] In one possible implementation, Figure 5As shown, the cooling chamber 1115 is rectangular, and the liquid inlet 1115a and the liquid outlet 1115b are located on the first diagonal of the cooling chamber 1115, and the first diversion groove 1115c and the second diversion groove 1115d are located on the second diagonal of the cooling chamber 1115, which is beneficial to improving the path of the coolant flowing along the length direction of the motor controller 1, and further improving the heat dissipation effect of the cooling chamber 1115 on the alternating module 16.

[0100] In one possible implementation, Figure 8 As shown, the alternating module 16 includes a second housing 162 and a chip 163 mounted on the second housing 162 . The chip 163 is detachably connected to the second housing 162 , and the second housing 162 is fixed to the first housing 11 .

[0101] In this embodiment, the alternating current module 16 includes an insulated bipolar transistor (IGBT) on chip 163. By sequentially switching on and off the IGBTs, the module converts DC power into three-phase AC power to drive the motor. Chip 163 is removably connected to the second housing 162, allowing for interchangeable IGBTs of varying sizes and types to accommodate motors of varying power, improving the adaptability of the motor controller 1.

[0102] The present application also provides a drive assembly (not shown) comprising a power battery, a motor, and a motor controller 1, which may be any of the motor controllers 1 described in the preceding embodiments. The drive element of the motor controller 1 is electrically connected to the power battery, and the control element is electrically connected to the motor.

[0103] When the motor controller 1 is used to drive the assembly, the motor controller 1 is provided with a drive control board 12 that integrates the drive function and the control function, so as to reduce the space occupied by the drive unit and the control unit in the motor controller 1, improve the degree of integration in the motor controller 1, and thus help to reduce the volume of the motor controller 1, thereby helping to reduce the volume of the drive assembly and make the drive assembly lighter.

[0104] In a possible embodiment, the motor is provided with a rear end cover, which can be covered on the first shell 11 so that the rear end tube and the first shell 11 are shared, which is beneficial to improve the integration level of the drive assembly and facilitate the separate disassembly and assembly of the two.

[0105] The above description is merely a specific implementation of the embodiments of the present application, but the scope of protection of the embodiments of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the embodiments of the present application shall be included in the scope of protection of the embodiments of the present application. Therefore, the scope of protection of the embodiments of the present application shall be based on the scope of protection of the claims.

Claims

1. A motor controller, characterized in that: The motor controller comprises: a first housing, the first housing comprising a receiving cavity; A drive control board, the drive control board is located in the accommodating cavity, the drive control board is used to connect to the motor, and the drive control board includes a plate body, a control element and a drive element, the plate body is fixed to the first shell, the control element and the drive element are integrated on the plate body, the drive element is used to provide power to the motor, and the control element is used to control the working state of the motor.

2. The motor controller according to claim 1, characterized in that: The motor controller further includes a connector, which is arranged on the drive control board. The connector includes a copper busbar for electrically connecting to the motor, and the surface of the copper busbar for connecting to the motor is flat.

3. The motor controller according to claim 2, characterized in that: The motor controller further includes a capacitor module, a filter, and an alternating module. Along the thickness direction of the motor controller, the alternating module is located between the first housing and the drive control board and is electrically connected to the drive control board. The connector, the drive control board, the alternating module, the capacitor module, and the filter are accommodated in the accommodating cavity along the length direction of the motor controller.

4. The motor controller according to claim 3, characterized in that: The accommodating cavity includes a first cavity, a second cavity, a third cavity, and a fourth cavity distributed along the length direction of the motor controller. The filter is accommodated in the first cavity, the capacitor module is accommodated in the second cavity, the alternating module is accommodated in the third cavity, and the connector is accommodated in the fourth cavity. Along the thickness direction of the motor controller, the depth of the second cavity is greater than the depths of the first cavity, the third cavity, and the fourth cavity.

5. The motor controller according to claim 4, characterized in that: Along the width direction of the motor controller, the size of the first cavity is smaller than the sizes of the second cavity, the third cavity, and the fourth cavity.

6. The motor controller according to any one of claims 3 to 5, characterized in that: The accommodating cavity is provided with a cooling cavity. Along the thickness direction of the motor controller, the projection of the alternating module can at least cover the cooling cavity. The alternating module further includes a heat-conducting column, which extends into the cooling cavity.

7. The motor controller according to claim 6, characterized in that: The cooling chamber includes a liquid storage chamber, a first diverter groove, a second diverter groove, a liquid inlet and a liquid outlet. The first diverter groove is connected to the liquid inlet and the liquid storage chamber, and the second diverter groove is connected to the liquid outlet and the liquid storage chamber. The liquid inlet and the liquid outlet are located on both sides of the liquid storage chamber and are diagonally arranged. The first diverter groove and the second diverter groove are located on both sides of the liquid storage chamber and are diagonally arranged.

8. The motor controller according to claim 7, characterized in that: The cooling cavity is rectangular, and the liquid inlet and the liquid outlet are located on a first diagonal line of the cooling cavity, and the first diverter groove and the second diverter groove are located on a second diagonal line of the cooling cavity.

9. The motor controller according to any one of claims 3 to 5, characterized in that: The alternating module includes a second shell and a chip installed in the second shell. The chip is detachably connected to the second shell, and the second shell is fixed to the first shell.

10. A drive assembly, characterized in that: The drive assembly includes: Power batteries; Motor; A motor controller, wherein the motor controller is the motor controller according to any one of claims 1 to 9; The driving element is electrically connected to the power battery, and the control element is electrically connected to the motor.

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