Motor controller and power assembly for vehicle

Abstract

The invention relates to the field of motor control, and discloses a motor controller and a power assembly for a vehicle, the motor controller comprises a first shell, a driving control board, a mounting part and a protective shell, the first shell defines a first accommodating cavity, the driving control board is arranged in the first accommodating cavity, the mounting part comprises a mounting part body and a conductive part, and the conductive part is arranged in the first accommodating cavity. The installation part body is fixed to the first shell, the conductive part is arranged on the installation part body and comprises a first connecting terminal and a second connecting terminal, the first connecting terminal is electrically connected with the drive control board, the second connecting terminal is used for being electrically connected with the motor, a second containing cavity is defined by the protection shell, and the protection shell is arranged on the outer side of the second connecting terminal in a sleeving mode; and the second connecting terminal is positioned in the second accommodating cavity. The beneficial effect is that the connection stability of the motor and the motor controller is improved.

Description

Technical Field

[0001] The present application relates to the field of motor control, and in particular to a motor controller and a powertrain for a vehicle. Background Art

[0002] With the increasing development and growth of electric vehicle technology, motor controllers, as an important component of electric vehicles, play a significant role in the field of electric vehicles. The basic principle of the motor controller is to regulate the motor power supply through electronic devices, thereby changing the operating state of the motor. The high-voltage connector serves as the three-phase connection point between the motor and the motor controller, connecting the copper busbar of the motor controller to the three-phase line of the motor. However, in the related art, the connection strength between the copper busbar of the motor controller and the three-phase line of the motor is not high, and the lack of a protective shell makes it easy to short-circuit with other components and disconnect, resulting in poor stability of the connection between the motor controller and the motor. Summary of the invention

[0003] The present application provides a motor controller and a powertrain for a vehicle, which solves the technical problems that the connection strength between the copper busbar of the motor controller and the three-phase line of the motor is not high and the lack of a protective shell makes it easy to short-circuit with other components and disconnect, resulting in poor stability in the use of the electric vehicle, and achieves the technical effect of improving the stability of the connection between the motor and the motor controller.

[0004] In order to achieve the above objectives, the main technical solutions adopted in this application include:

[0005] In the first aspect, an embodiment of the present application provides a motor controller, including a first shell, a drive control board, a mounting member and a protective shell, the first shell defines a first accommodating chamber, the drive control board is arranged in the first accommodating chamber, the mounting member includes a mounting member body and a conductive member, the mounting member body is fixed to the first shell, the conductive member is arranged on the mounting member body and includes a first connecting terminal and a second connecting terminal, the first connecting terminal is electrically connected to the drive control board, and the second connecting terminal is used to be electrically connected to the motor, the protective shell defines a second accommodating chamber, and the protective shell is sleeved on the outside of the second connecting terminal so that the second connecting terminal is located in the second accommodating chamber.

[0006] The protective shell defines a second accommodating chamber, and the protective shell is sleeved on the outside of the second connecting terminal so that the second connecting terminal is located in the second accommodating chamber. In other words, the protective shell can envelop the second connecting terminal, and the protective shell provides a solid physical barrier for the second connecting terminal to prevent direct damage to the second connecting terminal by external physical impact, dust, moisture and other environmental factors, thereby reducing the probability of power failure or leakage of the second connecting terminal and improving the stability of the connection between the motor and the motor controller.

[0007] Optionally, the second connecting terminal is connected to the wiring harness terminal of the motor through a fastener, and the first shell, the mounting body and the protective shell are respectively provided with a first through hole, a second through hole and a third through hole for the fastener to pass through, and along the axial direction of the second through hole, the first through hole, the second through hole and the third through hole are arranged opposite to the second connecting terminal.

[0008] The second connecting terminal is connected to the wiring harness terminal of the motor through a fastener, which can greatly improve the stability of the connection between the second connecting terminal and the wiring harness terminal of the motor and improve the reliability of the operation of the motor controller. The first via, the second via, and the third via are relatively arranged with the second connecting terminal, which can facilitate the installation or maintenance tools to connect the second connecting terminal to the wiring harness terminal of the motor through fasteners, significantly improving the installation or maintenance efficiency of the motor controller and reducing the installation or maintenance cost of the motor controller.

[0009] Optionally, the protective shell is further provided with a fourth through hole for the wiring harness terminal to pass through, the third through hole and the fourth through hole are both connected to the second accommodating chamber, and the extension direction of the third through hole is different from the extension direction of the fourth through hole.

[0010] The third via and the fourth via are both connected to the second accommodating chamber, and the extension direction of the third via is different from that of the fourth via. On the one hand, the space in the second accommodating chamber can be effectively utilized, the space utilization rate in the second accommodating chamber can be improved, the overall volume of the motor controller can be reduced, and the motor controller can be made more compact. On the other hand, the connection stability between the second connecting terminal and the wiring harness terminal of the motor can be enhanced, the probability of failure in the connection between the second connecting terminal and the wiring harness terminal of the motor can be reduced, and the stability and reliability of the operation of the motor controller can be improved.

[0011] Optionally, a nut is also provided in the protective shell, and the fastener is constructed as a bolt, which passes through the second connecting terminal and the wiring harness terminal to cooperate with the nut bolt, wherein the bolt includes a bolt head and a screw rod, and along the extension direction of the screw rod, the bolt head and the nut are respectively arranged on both sides of the wiring harness terminal and the second connecting terminal.

[0012] The bolt passes through the second connecting terminal and the wiring harness terminal to cooperate with the nut bolt, and the bolt head and the nut are respectively arranged on both sides of the wiring harness terminal and the second connecting terminal. On the one hand, the second connecting terminal and the wiring harness terminal are fastened together by the bolt and the nut, which can reduce the risk of failure of the motor controller due to loose or broken connection and improve the stability and reliability of the connection between the second connecting terminal and the wiring harness terminal. On the other hand, it is also conducive to the maintenance and inspection of the internal part of the motor controller. When the second connecting terminal and the wiring harness terminal show signs of looseness, the nut can be easily retightened without replacing the entire fastener.

[0013] Optionally, the mounting member body includes a first mounting portion, a connecting portion and a second mounting portion, the first mounting portion is fixed to the first shell, the second through hole is arranged on the first mounting portion, the first mounting portion and the second mounting portion are spaced apart in the axial direction of the second through hole, the connecting portion connects the first mounting portion and the second mounting portion, and the conductive member is arranged on the second mounting portion.

[0014] The connecting part connects the first mounting part and the second mounting part, and the conductive part is arranged on the second mounting part, so that the fallen fasteners can be collected on the connecting part to prevent the fasteners from falling to other parts of the motor controller, thereby improving the maintenance or assembly efficiency of the motor controller and reducing the probability of failure of the motor controller.

[0015] Optionally, along the axial direction of the second through hole, a projection of the first mounting portion does not overlap with a projection of the second mounting portion.

[0016] Along the axial direction of the second through hole, the projection of the first mounting portion does not overlap with the projection of the second mounting portion, so that the second connecting terminal arranged on the second mounting portion can be enveloped by the protective shell, preventing external factors from damaging the connection between the second connecting terminal and the wiring harness terminal, thereby improving the connection stability and reliability of the second connecting terminal and the wiring harness terminal.

[0017] Optionally, a portion of the conductive member is embedded in the second mounting portion, and another portion of the conductive member extends out of the second mounting portion to form a second connecting terminal.

[0018] A portion of the conductive member is embedded in the second mounting portion, and another portion of the conductive member extends out of the second mounting portion to form a second connecting terminal. On the one hand, this can enhance the reliability of the connection between the conductive member and the second mounting portion and reduce the probability of power failure or leakage at the conductive member. On the other hand, a portion of the conductive member is embedded in the second mounting portion, which can significantly improve the space utilization inside the motor controller and make the internal structure of the motor controller more compact.

[0019] Optionally, a plurality of spaced-apart stop ribs are provided between the first mounting portion and the connecting portion.

[0020] A plurality of spaced-apart stop ribs are also provided between the first mounting portion and the connecting portion, and the stop ribs can support the first mounting portion and the connecting portion, thereby improving the bearing capacity of the first mounting portion and the connecting portion, and increasing the overall strength by increasing the local strength without increasing the thickness of the first mounting portion or the connecting portion, thereby saving material usage, reducing weight, and reducing costs, and greatly improving the stability and reliability of the mounting body structure.

[0021] Optionally, there are multiple second connection terminals, and the multiple second connection terminals are all arranged in the second accommodating chamber.

[0022] Multiple second connecting terminals are all arranged in the second accommodating chamber, and the protective shell can provide effective protection for the second connecting terminals, reduce the probability of power failure or leakage at the second connecting terminals, and improve the stability and reliability of the connection between the second connecting terminals and the wiring harness terminals.

[0023] Optionally, the first shell is further provided with a cooling chamber for cooling the drive control board, and a plurality of heat conducting columns are provided on one side of the drive control board facing the cooling chamber, and at least parts of the heat conducting columns extend into the cooling chamber.

[0024] Since the drive control board generates a large amount of heat during the operation of the motor controller, a portion of the first housing corresponding to the drive control board is provided with a cooling chamber for cooling the drive control board, and a plurality of heat-conducting columns are provided on the side of the drive control board facing the cooling chamber, and at least a portion of the heat-conducting columns are provided in the cooling chamber. During the process of the cooling chamber cooling the drive control board, a coolant is provided inside the cooling chamber, and a plurality of heat-conducting columns extend into the coolant, which can significantly improve the heat dissipation capacity of the drive control board, ensure the working performance of the drive control board, and further help improve the working stability, reliability and service life of the motor controller.

[0025] Optionally, the cooling chamber has a liquid inlet and a liquid outlet, and the cross-sectional area of ​​the liquid inlet is larger than the cross-sectional area of ​​the liquid outlet.

[0026] The cooling chamber is provided with a liquid inlet and a liquid outlet, and the coolant flows into the cooling chamber from the liquid inlet, and continuously exchanges heat with the heat-conducting column. The cross-sectional area of ​​the liquid inlet is larger than the cross-sectional area of ​​the liquid outlet, so that the coolant flowing into the cooling chamber is larger than the coolant discharged from the cooling chamber, thereby avoiding the cavity effect (no coolant in the cooling chamber), improving the heat exchange and heat dissipation capacity of the drive control board, ensuring the working performance of the drive control board, and thus helping to improve the stability, reliability and service life of the motor controller.

[0027] Optionally, a first group of reinforcing ribs and a second group of reinforcing ribs are provided on the side of the first shell facing away from the first accommodating chamber. Along the thickness direction of the first shell, the first group of reinforcing ribs are arranged opposite to the drive control plate. The height of the first group of reinforcing ribs is greater than the height of the second group of reinforcing ribs. Protective ribs and an exhaust valve are also provided on the first shell. The protective ribs are separated from the first group of reinforcing ribs to form a protective chamber, and part of the exhaust valve extends into the protective chamber.

[0028] Part of the exhaust valve extends into the protection chamber, that is, along the thickness direction of the first shell, the height of the exhaust valve is lower than the first group of reinforcing ribs and protective ribs. In this way, the first group of ribs and protective ribs can be fully utilized to protect the exhaust valve and reduce the probability of exhaust valve failure.

[0029] In a second aspect, an embodiment of the present application further provides a powertrain for a vehicle, comprising a motor, a battery, and a motor controller as described in any one of the above embodiments, wherein the motor controller is electrically connected to the battery and the motor, respectively.

[0030] The powertrain for a vehicle provided in an embodiment of the present application, wherein the motor controller includes a protective housing, the protective housing defines a second accommodating chamber, and the protective housing is sleeved on the outside of the second connecting terminal so that the second connecting terminal is located in the second accommodating chamber. In other words, the protective housing can envelop the second connecting terminal, and the protective housing provides a solid physical barrier for the second connecting terminal to prevent direct damage to the second connecting terminal by external physical impact, dust, moisture and other environmental factors, thereby reducing the probability of power failure or leakage of the second connecting terminal and improving the stability of the connection between the motor and the motor controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 A schematic diagram of an exploded structure of a motor controller provided in one embodiment of the present application;

[0033] Figure 2 A schematic diagram of the structure of a motor controller and a motor provided in one embodiment of the present application;

[0034] Figure 3 A partial enlarged view of a motor controller provided in one embodiment of the present application;

[0035] Figure 4 A schematic diagram of the structure of a motor controller and a motor provided in one embodiment of the present application;

[0036] Figure 5 A schematic diagram of the structure of a motor controller provided in one embodiment of the present application;

[0037] Figure 6 for Figure 5 Cross-sectional view in LL direction;

[0038] Figure 7 for Figure 6 A partial enlarged view of

[0039] Figure 8 A schematic diagram of the structure of a mounting member provided in one embodiment of the present application;

[0040] Fig. 9 A structural schematic diagram of a first shell is provided for an embodiment of the present application;

[0041] Fig.10 An exploded structural diagram of a motor controller is provided for one embodiment of the present application;

[0042] Fig.11 A cross-sectional view of a motor controller provided in one embodiment of the present application;

[0043] Fig.12 for Fig. 9 sectional view of;

[0044] Fig.13 A schematic diagram of the structure of a capacitor assembly provided in one embodiment of the present application;

[0045] Fig.14 A schematic diagram of an exploded structure of a capacitor assembly provided in one embodiment of the present application;

[0046] Fig.15 A schematic diagram of the structure of a copper busbar and a capacitor core provided in one embodiment of the present application;

[0047] Fig.16 The positive copper busbar is shown;

[0048] Fig.17 The negative copper busbar is shown.

[0049] [Description of Reference Numerals]

[0050] Motor controller 100; motor 101; first housing 110; first accommodating chamber 110S; first through hole 111; drive control board 120; heat-conducting column 121; mounting member 130; mounting member body 131; first mounting portion 131A; second mounting portion 131B; connecting portion 131C; conductive member 132; first connecting terminal 132A; second connecting terminal 132B; second through hole 133; wiring harness terminal 140; protective housing 150; second accommodating chamber 150S; third through hole 151; fourth through hole 152; fastener 160; stop rib 170; cooling chamber 180; liquid inlet 181; liquid outlet 182; liquid storage chamber 183; first shunt groove 184; second shunt groove 185; first group of reinforcing ribs 190; second group of reinforcing ribs 191; protective rib 200; exhaust valve 210; capacitor assembly 2 20; second shell 221; positive copper busbar 223; negative copper busbar 224; capacitor core 225; injection molding material 226; first body 230; positive terminal 231; first terminal 231A; second terminal 231B; second body 232; negative terminal 234; third terminal 234A; fourth terminal 234B; first through hole 235; third body 236; fourth body 237; third through hole 238; fourth through hole 239; core monomer 240; extension part 241; insulating paper 242; heat sink 245; reinforcing rib 246; filter 248; low-voltage connector 249; sealing cover 250; first cavity 251; second cavity 252; third cavity 253; fourth cavity 254; liquid inlet pipe 255; liquid outlet 256; plugging cover 257; second through hole 258; sealing ring 259; first connecting piece 260. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0052] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0053] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0054] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0055] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0056] The term "multiple" as used in the present application refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple sheets" refers to more than two sheets (including two sheets).

[0057] With the increasing development and growth of electric vehicle technology, the three-electric system (battery, motor and electronic control) is an important part of electric vehicles, and the quality of the three-electric system plays a vital role in the quality of electric vehicles. The battery is the energy source of electric vehicles, responsible for storing and releasing electrical energy. The motor is a device that converts the battery's electrical energy into mechanical energy to drive the car. The electronic control system is the brain of the electric vehicle, responsible for controlling the work of the battery, motor and other auxiliary equipment. The electronic control system includes functional modules such as power management, battery management, and motor control. It realizes intelligent control of electric vehicles by real-time monitoring and analysis of various data.

[0058] As an important component of electric vehicles, the motor controller plays a significant role in the field of electric vehicles. The basic principle of the motor controller is to regulate the motor power supply through electronic devices, thereby changing the operating state of the motor. The high-voltage connector is the three-phase connection point between the motor and the motor controller. The main function of the high-voltage connector is to transmit high-voltage power to ensure that the motor controller can obtain enough power to the motor. It is usually connected by the copper busbar of the motor controller and the three-phase line of the motor. However, in the related art, the connection strength between the copper busbar of the motor controller and the three-phase line of the motor is not high, and the lack of a protective shell makes it easy to short-circuit with other components and disconnect, resulting in poor stability of the connection between the motor controller and the motor.

[0059] In view of this, in order to improve the stability of the connection between the motor controller and the motor, the present application proposes a motor controller, which includes a first housing, a drive control board, a mounting member and a protective housing.

[0060] The first shell defines a first accommodating chamber, the drive control board is arranged in the first accommodating chamber, the mounting member includes a mounting member body and a conductive member, the mounting member body is fixed to the first shell, the conductive member is arranged in the mounting member body and includes a first connecting terminal and a second connecting terminal, the first connecting terminal is electrically connected to the drive control board, and the second connecting terminal is used to be electrically connected to the motor, the protective shell defines a second accommodating chamber, and the protective shell is sleeved on the outside of the second connecting terminal so that the second connecting terminal is located in the second accommodating chamber.

[0061] In the above scheme, the protective shell defines a second accommodating chamber, and the protective shell is sleeved on the outside of the second connecting terminal so that the second connecting terminal is located in the second accommodating chamber, and the second connecting terminal can be enclosed in the second accommodating chamber. On the one hand, the connecting line at the second connecting terminal can be protected, and on the other hand, the second connecting terminal can be prevented from contacting and short-circuiting with other components in the motor controller, thereby improving the stability and reliability of the connection between the motor controller and the motor.

[0062] The first shell disclosed in the embodiment of the present application may be a housing of a motor controller.

[0063] The drive control board disclosed in the embodiment of the present application may include an IGBT, which is an insulated gate bipolar transistor, and is a composite fully controlled voltage-driven power semiconductor device. It combines the advantages of the high input impedance of the metal oxide semiconductor field effect transistor (MOSFET) and the low on-state voltage drop of the power transistor (GTR), and is one of the mainstream devices in power electronic devices.

[0064] The mounting member disclosed in the embodiment of the present application may be a high voltage connector.

[0065] The conductive member disclosed in the embodiment of the present application may be a copper busbar.

[0066] For the convenience of description, the following embodiments are described by taking a motor controller according to an embodiment of the present application as an example.

[0067] Please refer to Figures 1 to 12 , Figure 1 A schematic diagram of an exploded structure of a motor controller 100 provided in one embodiment of the present application; Figure 2 A schematic diagram of the structure of a motor controller 100 and a motor 101 provided in an embodiment of the present application; Figure 3 A partial enlarged view of a motor controller 100 provided in one embodiment of the present application; Figure 4 A schematic diagram of the structure of a motor controller 100 and a motor 101 provided in an embodiment of the present application; Figure 5 A schematic diagram of the structure of a motor controller 100 provided in one embodiment of the present application; Figure 6 Figure 5 Cross-sectional view in LL direction; Figure 7 for Figure 6 A partial enlarged view of Figure 8 A schematic diagram of the structure of a mounting member 130 provided in an embodiment of the present application; Fig. 9 A structural schematic diagram of a first housing 110 is provided for an embodiment of the present application; Fig.10 An exploded structural diagram of a motor controller 100 is provided for one embodiment of the present application; Fig.11 A cross-sectional view of a motor controller 100 provided in one embodiment of the present application; Fig.12 for Fig. 9 Cross-sectional view of .

[0068] In this embodiment, a first shell 110, a drive control board 120, a mounting member 130 and a protective shell 150 are included. The first shell 110 defines a first accommodating chamber 110S. The drive control board 120 is disposed in the first accommodating chamber 110S. The mounting member 130 includes a mounting member body 131 and a conductive member 132. The mounting member body 131 is fixed to the first shell 110. The conductive member 132 is disposed in the mounting member body 131 and includes a first connecting terminal 132A and a second connecting terminal 132B. The first connecting terminal 132A is electrically connected to the drive control board 120, and the second connecting terminal 132B is used to be electrically connected to the motor 101. The protective shell 150 defines a second accommodating chamber 150S. The protective shell 150 is sleeved on the outside of the second connecting terminal 132B so that the second connecting terminal 132B is located in the second accommodating chamber 150S.

[0069] The first shell 110 defines a first accommodating chamber 110S, and the drive control board 120 is arranged in the first accommodating chamber 110S, that is, the first shell 110 can envelop the drive control board 120. The first shell 110 provides a solid physical barrier for the drive control board 120 to prevent direct damage to the drive control board 120 by external environmental factors such as physical impact, dust, and moisture. Moreover, the first shell 110 can also shield the interference of external electromagnetic fields on the drive control board 120, while also reducing the impact of electromagnetic radiation generated by the drive control board 120 itself on the surrounding environment, thereby improving the working stability and reliability of the motor controller 100. The mounting member 130 includes a mounting member body 131 and a conductive member 132. The mounting member body 131 is fixed to the first shell 110. The mounting member body 131 can be arranged in the first accommodating chamber 110S, or can be enveloped by the first shell 110. The conductive member 132 is arranged on the mounting member body 131. For example, the conductive member 132 can be inserted into the mounting member body 131. During the production and manufacturing process, the conductive member 132 can be first placed on a mold corresponding to the mounting member body 131, and then the conductive member 132 and the mounting member body 131 can be integrally formed by using an integrated injection molding technology. At least a portion of the conductive member 132 is inserted into the interior of the mounting member body 131. This can improve the stability of the connection between the mounting member body 131 and the conductive member 132, reduce the probability of the conductive member 132 and the mounting member body 131 separating, and thus improve the connection stability between the motor controller 100 and the motor 101.

[0070] The input end of the motor controller 100 is electrically connected to the battery, and the output end is connected to the motor 101. The motor controller 100 is used to control the rotation of the motor 101. In the embodiment of the present application, the conductive member 132 includes a first connection terminal 132A and a second connection terminal 132B. The first connection terminal 132A is electrically connected to the drive control board 120, and the second connection terminal 132B is electrically connected to the motor 101. The drive control board 120 can be an IGBT, which is an insulated gate bipolar transistor. The drive control board 120 is mainly used in the motor controller 100 to convert between alternating current and direct current to meet the needs of the operation of the motor 101. The motor controller 100 controls the switch state of the drive control board 120 to achieve precise control of the start, running speed and stop of the motor 101. Moreover, according to the user's instructions, the motor controller 100 can adjust the switching frequency and duty cycle of the drive control board 120 to control the output torque and speed of the motor 101. The first connection terminal 132A is electrically connected to the driving control board 120 , and the second connection terminal 132B is electrically connected to the motor 101 . The motor controller 100 can control the motor 101 .

[0071] Furthermore, the protective shell 150 defines a second accommodating chamber 150S, and the protective shell 150 is sleeved on the outer side of the second connection terminal 132B so that the second connection terminal 132B is located in the second accommodating chamber 150S. In other words, the protective shell 150 can envelop the second connection terminal 132B, and the protective shell 150 provides a solid physical barrier for the second connection terminal 132B to prevent external physical impact, dust, moisture and other environmental factors from directly damaging the second connection terminal 132B, thereby reducing the probability of power failure or leakage of the second connection terminal 132B, and improving the stability of the connection between the motor 101 and the motor controller 100. Exemplarily, the material of the protective shell 150 can be set to polycarbonate (PC). On the one hand, polycarbonate has high impact resistance and can effectively protect the second connection terminal 132B from external impact. On the other hand, the polycarbonate material is a transparent part. When the motor controller 100 fails and needs to be repaired, the second connection terminal 132B can be directly observed through the transparent protective shell 150, and it can be quickly determined whether the second connection terminal 132B has a fault, which significantly improves the maintenance efficiency of the maintenance personnel. In addition, the polycarbonate material has good heat resistance. The second connection terminal 132B usually needs to transmit current, and the heat generated here is more serious. Setting the polycarbonate material as a protective shell can greatly increase the service life of the protective shell 150, thereby increasing the service life of the motor controller 100 and improving the stability of the connection between the motor controller 100 and the motor 101.

[0072] In some embodiments, an insulating material may be provided in the second accommodating chamber 150S, and the insulating material may wrap the second connecting terminal 132B. Exemplarily, the insulating material may be a PVC plastic insulating layer, a cross-linked polyethylene (XLPE) insulating layer, an epoxy resin powder coating, a glass fiber insulating layer, and a rubber-coated insulating layer. PVC plastic insulating material has the advantages of smooth appearance, smooth surface, and high strength; XLPE insulating layer is a polymer insulating material with excellent heat resistance and lodging resistance, and a long service life; epoxy resin powder coating is a thermosetting dry powder with high mechanical properties, chemical resistance, and temperature resistance; the rubber-coated insulating layer is a viscose material with good insulating properties, a simple structure, and easy assembly and processing.

[0073] Please refer to Figures 1 to 12 In this embodiment, the second connecting terminal 132B is connected to the wiring harness terminal 140 of the motor 101 through a fastener 160. The first shell 110, the mounting body 131 and the protective shell 150 are respectively provided with a first through hole 111, a second through hole 133 and a third through hole 151 for the fastener 160 to pass through. Along the axial direction of the second through hole 133, the first through hole 111, the second through hole 133, the third through hole 151 and the second connecting terminal 132B are arranged opposite to each other.

[0074] The second connecting terminal 132B is connected to the wiring harness terminal 140 of the motor 101 through a fastener 160. Exemplarily, the second connecting terminal 132B is provided with a socket, and the wiring harness terminal 140 of the motor 101 extends into the second accommodating chamber 150S, corresponding to the socket at the second connecting terminal 132B. The wiring harness terminal 140 of the motor 101 is also provided with a socket. The fastener 160 passes through the socket of the second connecting terminal 132B and the socket of the wiring harness terminal 140 of the motor 101. The second connecting terminal 132B is electrically connected to the wiring harness terminal 140 of the motor 101 through the fastener 160, and the fastener 160 can firmly fix the second connecting terminal 132B and the wiring harness terminal 140 of the motor 101, thereby reducing the probability of the second connecting terminal 132B and the wiring harness terminal 140 of the motor 101 falling off and separating, and improving the stability of the connection between the motor controller 100 and the motor 101.

[0075] Usually, it is necessary to use an installation tool to connect the second connection terminal 132B to the wiring harness terminal 140 of the motor 101. Since the second connection terminal 132B is arranged in the first accommodating chamber 110S, that is, inside the first housing 110, when the second connection terminal 132B needs to be installed and connected with the wiring harness terminal 140 of the motor 101, the installation tool needs to extend into the first accommodating chamber 110S. A first through hole 111 for the fastener 160 to pass through is provided on the first housing 110. The installation tool can enter the first accommodating chamber 110S through the first through hole 111, and then connect the second connection terminal 132B to the wiring harness terminal 140 of the motor 101 through the fastener 160. On the one hand, the first through hole 111 can be used to extend the installation tool into the first accommodating chamber 110S to connect the second connecting terminal 132B with the wiring harness terminal 140 of the motor 101, thereby improving the connection stability between the second connecting terminal 132B and the wiring harness terminal 140 of the motor 101 and improving the assembly efficiency of the motor controller 100. On the other hand, when a fault occurs inside the motor controller 100 or maintenance is required, the installation tool or maintenance tool can be extended into the motor controller 100 through the first through hole 111 without disassembling the first shell 110, thereby greatly improving the maintenance or assembly efficiency.

[0076] The mounting body 131 is provided with a second through hole 133 for the fastener 160 to pass through. Along the axial direction of the second through hole 133, the second through hole 133 is arranged opposite to the first through hole 111, and the second through hole 133 is arranged opposite to the second connection terminal 132B. That is to say, along the axial direction of the second through hole 133, the positions of the second through hole 133, the first through hole 111 and the second connection terminal 132B are corresponding. Since the conductive member 132 is arranged on the mounting body 131, and the conductive member 132 includes the first connection terminal 132A and the second connection terminal 132B, the second connection terminal 132B is also connected to the mounting body 131. Therefore, when a fault occurs at the second connection terminal 132B and needs to be repaired, the repair tool can be extended into the first accommodating chamber 110S through the first through hole 111, and then enter the second connection terminal 132B through the second through hole 133, so as to improve the repair efficiency.

[0077] Along the axial direction of the second through hole 133, a third through hole 151 provided on the protective shell 150 for the fastener 160 to pass through is arranged opposite to the second connecting terminal 132B. Specifically, the third through hole 151 provided on the protective shell 150 faces the second connecting terminal 132B, and the fastener 160 can extend into the second accommodating chamber 150S through the third through hole 151 to realize a fixed connection between the second connecting terminal 132B and the wiring harness terminal 140 of the motor 101.

[0078] Specifically, the second connecting terminal 132B is connected to the wiring harness terminal 140 of the motor 101 via the fastener 160, which can greatly improve the stability of the connection between the second connecting terminal 132B and the wiring harness terminal 140 of the motor 101 and improve the reliability of the operation of the motor controller 100. The first via 111, the second via 133, the third via 151 and the second connecting terminal 132B are relatively arranged to facilitate the installation or maintenance tools to connect the second connecting terminal 132B to the wiring harness terminal 140 of the motor 101 via the fastener 160, which significantly improves the installation or maintenance efficiency of the motor controller 100 and reduces the installation or maintenance cost of the motor controller 100.

[0079] Please refer to Figures 1 to 12 In this embodiment, the protective shell 150 is also provided with a fourth through hole 152 for the wiring harness terminal 140 to pass through, the third through hole 151 and the fourth through hole 152 are both connected to the second accommodating chamber 150S, and the extension direction of the third through hole 151 is different from the extension direction of the fourth through hole 152.

[0080] The protective shell 150 is provided with a fourth through hole 152 for the wiring harness terminal 140 to pass through, that is, the wiring harness terminal 140 of the motor 101 can extend into the second accommodating chamber 150S through the fourth through hole 152. Since the second connecting terminal 132B is connected to the wiring harness terminal 140 of the motor 101 through the fastener 160, the second connecting terminal 132B can also extend into the second accommodating chamber 150S through the fourth through hole 152. The extension direction of the third through hole 151 is different from the extension direction of the fourth through hole 152. Exemplarily, the extension direction of the first through hole can be perpendicular to the extension direction of the fourth through hole 152, the second connection terminal 132B and the wiring harness terminal 140 of the motor 101 extend into the second accommodating chamber 150S of the protective shell 150 through the fourth through hole 152, and the fastener 160 can also extend into the second accommodating chamber 150S of the protective shell 150 through the third through hole 151, and the fastener 160 is perpendicular to the second connection terminal 132B and the wiring harness terminal 140 of the motor 101, respectively, and the fastener 160 connects the first through hole 152 to the second accommodating chamber 150S of the protective shell 150. The second connecting terminal 132B is connected and fastened to the wiring harness terminal 140 of the motor 101. Since the fastener 160 is respectively perpendicular to the second connecting terminal 132B and the wiring harness terminal 140 of the motor 101, the contact area between the fastener 160 and the second connecting terminal 132B or the wiring harness terminal 140 of the motor 101 is the largest, and the friction force or fastening force will also be relatively large, which can greatly improve the connection stability between the second connecting terminal 132B and the wiring harness terminal 140 and improve the stability and reliability of the operation of the motor controller 100. Moreover, the wiring harness terminal 140 enters the second accommodating chamber 150S through the fourth via hole 152, and the fastener 160 extends into the accommodating chamber through the third via hole 151. The extension direction of the third via hole 151 is different from the extension direction of the fourth via hole 152. That is to say, the wiring harness terminal 140 and the fastener 160 can enter the second accommodating chamber 150S through two different directions respectively, which can effectively utilize the space in the second accommodating chamber 150S and reduce the probability of dead corners (unused space) in the second accommodating chamber 150S.

[0081] Specifically, the third via 151 and the fourth via 152 are both connected to the second accommodating chamber 150S, and the extension direction of the third via 151 is different from that of the fourth via 152. On the one hand, the space in the second accommodating chamber 150S can be effectively utilized, the space utilization rate in the second accommodating chamber 150S can be improved, the overall volume of the motor controller 100 can be reduced, and the motor controller 100 can be made more compact. On the other hand, the connection stability between the second connecting terminal 132B and the wiring harness terminal 140 of the motor 101 can be enhanced, the probability of failure in the connection between the second connecting terminal 132B and the wiring harness terminal 140 of the motor 101 can be reduced, and the stability and reliability of the operation of the motor controller 100 can be improved.

[0082] Please refer to Figures 1 to 12 In this embodiment, a nut is also provided in the protective shell 150, and the fastener 160 is constructed as a bolt, which passes through the second connecting terminal 132B and the wiring harness terminal 140 to cooperate with the nut bolt, wherein the bolt includes a bolt head and a screw rod, and along the extension direction of the screw rod, the bolt head and the nut are respectively arranged on both sides of the wiring harness terminal 140 and the second connecting terminal 132B.

[0083] The second connection terminal 132B and the wiring harness terminal 140 may be respectively provided with holes for the screw to pass through. When the second connection terminal 132B and the wiring harness terminal 140 are fastened together by bolts, the screws are respectively inserted into the second connection terminal 132B and the wiring harness terminal 140 and matched with the nuts in the protective shell 150 along the direction away from the bolt head and along the extension of the screw. The bolt head and the nut are respectively arranged at the two ends of the second connection terminal 132B and the wiring harness terminal 140. Exemplarily, along the extension direction of the screw, the bolt head, the second connection terminal 132B, the wiring harness terminal 140 and the nut may be arranged in sequence.

[0084] Specifically, the bolt passes through the second connection terminal 132B and the harness terminal 140 to cooperate with the nut bolt, and the bolt head and the nut are respectively arranged on both sides of the harness terminal 140 and the second connection terminal 132B. On the one hand, the second connection terminal 132B is fastened and matched with the harness terminal 140 by the bolt and the nut, which can reduce the risk of failure of the motor controller 100 caused by loose connection or breakage, and improve the stability and reliability of the connection between the second connection terminal 132B and the harness terminal 140. On the other hand, it is also conducive to the maintenance and inspection of the inside of the motor controller 100. When the second connection terminal 132B and the harness terminal 140 show signs of looseness, the nut can be easily re-tightened without replacing the entire fastener 160. Moreover, when the second connection terminal 132B and the harness terminal 140 need to be repaired or replaced, since the bolt and the nut can be disassembled, the bolt and the nut can be disassembled and separated, and then the second connection terminal 132B and the harness terminal 140 can be repaired or replaced.

[0085] In some embodiments, the conductive member 132 is electrically connected to the drive control board 120 through the first connecting member 260, and the drive control board 120 is electrically connected to the motor 101, thereby realizing the control of the motor 101 by the motor controller 100. Exemplarily, the first connecting member 260 can be set as a hexagonal copper stud, which can use the conductivity of copper to electrically connect the drive control board 120 and the conductive member 260, and can also use the stud to fix the mounting member 130 inside the motor controller 100.

[0086] In some embodiments, a double nut system may be provided on the bolt to fasten the second connection terminal 132B to the harness terminal 140. For example, the nut may include a tightening nut and a locking nut, which can significantly enhance the tightness and stability of the connection. The double cooperation of the tightening nut and the locking nut can significantly improve the stability and reliability of the connection between the second connection terminal 132B and the harness terminal 140. The double nut system can more accurately control the preload through the interaction of the two nuts, effectively resist the relaxation effect, and thus ensure the tightness and stability of the connection.

[0087] In some embodiments, a high-temperature resistant water-absorbing component, such as silica gel or water-absorbing resin, can also be provided at the third through hole 151. On the one hand, it can absorb moisture inside the second protective shell 150 to make the air inside the second accommodating chamber 150S drier, further reducing the risk of power failure, leakage or short circuit at the second connection terminal 132B. On the other hand, the high-temperature resistant water-absorbing component itself has a certain volume and can fully occupy the remaining volume of the third through hole 151, thereby supporting the second connection terminal 132B, greatly improving the stability of the connection between the second connection terminal 132B and the wiring harness terminal 140, improving the stability and reliability of the control operation of the motor 101, and reducing the probability of failure of the motor controller 100.

[0088] Please refer to Figures 1 to 12 In this embodiment, the mounting member body 131 includes a first mounting portion 131A, a connecting portion 131C and a second mounting portion 131B, the first mounting portion 131A is fixed to the first shell 110, the second through hole 133 is arranged on the first mounting portion 131A, the first mounting portion 131A and the second mounting portion 131B are spaced apart in the axial direction of the second through hole 133, the connecting portion 131C connects the first mounting portion 131A and the second mounting portion 131B, and the conductive member 132 is arranged on the second mounting portion 131B.

[0089] Along the axis of the second through hole 133, the first mounting portion 131A is spaced apart from the second mounting portion 131B, and the connecting portion 131C connects the first mounting portion 131A and the second mounting portion 131B, that is, the connecting portion 131C is arranged in the middle of the first mounting portion 131A and the second mounting portion 131B, the first mounting portion 131A is fixed to the first shell 110, and the first mounting portion 131A is arranged in the first accommodating chamber 110S, correspondingly, the second mounting portion 131B is also arranged in the first shell 110, and the second mounting portion 131B is farther away from the first shell 110 than the first mounting portion 131A. Since the conductive member 132 is disposed on the second mounting portion 131B, when the second connection terminal 132B is assembled and fastened to the wiring harness terminal 140 by the fastener 160, the fastener 160 passes through the first through hole 111 disposed on the first housing 110 and the second through hole 133 disposed on the first mounting portion 131A. Since the second through hole 133 is disposed on the first mounting portion 131A, the fastener 160 needs to fasten the second connection terminal 132B to the wiring harness terminal 140. That is, when the second connection terminal 132B is assembled and fastened to the wiring harness terminal 140, the fastener 160 passes through the first through hole 111 disposed on the first housing 110 and the second through hole 133 disposed on the first mounting portion 131A. When the sub-shell 140 is tightened, the fastener 160 will pass through the first mounting portion 131A to reach the second mounting portion 131B. Since the connecting portion 131C is set between the first mounting portion 131A and the second mounting portion 131B, even if the fastener 160 falls due to various factors, it will directly fall on the connecting portion 131C instead of falling on other parts of the motor controller 100. This makes it convenient for maintenance or assembly personnel to take out the fastener 160 again without disassembling the entire first shell 110, thereby greatly improving the maintenance or assembly efficiency of the motor controller 100.

[0090] Specifically, the connecting portion 131C connects the first mounting portion 131A and the second mounting portion 131B, and the conductive member 132 is disposed on the second mounting portion 131B, so that the fallen fastener 160 can be collected on the connecting portion 131C to prevent the fastener 160 from falling to other parts of the motor controller 100, thereby improving the maintenance or assembly efficiency of the motor controller 100 and reducing the probability of failure of the motor controller 100.

[0091] Please refer to Figures 1 to 12 In this embodiment, along the axial direction of the second through hole 133 , the projection of the first mounting portion 131A and the projection of the second mounting portion 131B do not overlap.

[0092] Along the axis direction of the second through hole 133, the projection of the first mounting portion 131A and the projection of the second mounting portion 131B do not overlap, that is, the first mounting portion 131A and the second mounting portion 131B are respectively arranged on both sides perpendicular to the axis direction of the second through hole 133. Since the second mounting portion 131B is provided with a conductive member 132, the conductive member 132 itself has a certain length, and the position corresponding to the first mounting portion 131A along the axis direction of the second through hole 133 can accommodate the conductive member 132, so that the second connection terminal 132B and the second through hole 133 can roughly correspond to each other on the axis of the second through hole 133, thereby improving the space utilization inside the motor controller 100 and reducing the overall volume of the motor controller 100.

[0093] Furthermore, along the axial direction of the second through hole 133, the projection of the first mounting portion 131A and the projection of the second mounting portion 131B do not overlap, so that the second connecting terminal 132B arranged on the second mounting portion 131B can be enveloped by the protective shell 150, thereby preventing external factors from damaging the connection between the second connecting terminal 132B and the wiring harness terminal 140, thereby improving the connection stability and reliability of the second connecting terminal 132B and the wiring harness terminal 140.

[0094] Please refer to Figures 1 to 12 In this embodiment, a portion of the conductive member 132 is embedded in the second mounting portion 131B, and another portion of the conductive member 132 extends out of the second mounting portion 131B to form a second connecting terminal 132B.

[0095] A portion of the conductive member 132 is disposed inside the second mounting portion 131B, and another portion of the conductive member 132 extends out of the second mounting portion 131B to form a second connection terminal 132B, which is connected to the wiring harness terminal 140. That is, the connection between the conductive member 132 and the second connection terminal 132B is not inside the second mounting portion 131B, but outside the second mounting portion 131B. Along the axial direction of the second through hole 133, a support seat is also disposed on the connection portion 131C corresponding to the conductive member 132, and the support seat abuts against the portion of the conductive member 132 extending out of the second mounting portion 131B (the second connection terminal 132B). The support seat can support the conductive member 132, reduce the single-point force on the conductive member 132, increase the service life of the conductive member 132, reduce the probability of deformation of the conductive member 132, and improve the stability and reliability of the connection between the second connection terminal 132B and the wiring harness terminal 140.

[0096] Furthermore, a portion of the conductive member 132 is embedded in the second mounting portion 131B, and another portion of the conductive member 132 extends out of the second mounting portion 131B to form a second connecting terminal 132B. On the one hand, the reliability of the connection between the conductive member 132 and the second mounting portion 131B can be enhanced, and the probability of power failure or leakage at the conductive member 132 can be reduced. On the other hand, a portion of the conductive member 132 is embedded in the second mounting portion 131B, which can significantly improve the space utilization inside the motor controller 100 and make the internal structure of the motor controller 100 more compact.

[0097] Please refer to Figures 1 to 12 In this embodiment, a plurality of spaced-apart stop ribs 170 are further provided between the first mounting portion 131A and the connecting portion 131C.

[0098] A plurality of spaced-apart stop ribs 170 are further provided between the first mounting portion 131A and the connecting portion 131C. The stop ribs 170 can support the first mounting portion 131A and the connecting portion 131C, thereby improving the bearing capacity of the first mounting portion 131A and the connecting portion 131C. Without increasing the thickness of the first mounting portion 131A or the connecting portion 131C, the overall strength is increased by increasing the local strength, thereby saving material usage, reducing weight, and reducing costs, thereby greatly improving the stability and reliability of the structure of the mounting body 131.

[0099] Please refer to Figures 1 to 12 In the present embodiment, there are a plurality of second connection terminals 132B, and the plurality of second connection terminals 132B are all disposed in the second accommodating chamber 150S.

[0100] Exemplarily, the number of second connection terminals 132B can be three, and the three connection terminals are respectively connected to the wiring harness terminal 140, and the three connection terminals respectively correspond to the three phases of the motor 101, namely, the U phase, the V phase, and the W phase. After the current undergoes complex processing inside the motor controller 100, it is output to the motor 101, and the motor 101 rotates. Multiple second connection terminals 132B are all arranged in the second accommodating chamber 150S, and the protective shell 150 can provide effective protection for the second connection terminal 132B, reduce the probability of power failure or leakage at the second connection terminal 132B, and improve the stability and reliability of the connection between the second connection terminal 132B and the wiring harness terminal 140.

[0101] Please refer to Figures 1 to 12 In this embodiment, the first shell 110 is also provided with a cooling chamber 180 for cooling the drive control board 120 , and a plurality of heat conductive columns 121 are provided on one side of the drive control board 120 facing the cooling chamber 180 , and at least part of the heat conductive columns 121 extends into the cooling chamber 180 .

[0102] Since the drive control board 120 generates a large amount of heat during the operation of the motor controller 100, a portion of the first housing 110 corresponding to the drive control board 120 is provided with a cooling chamber 180 for cooling the drive control board 120, and a plurality of heat-conducting columns 121 are provided on the side of the drive control board 120 facing the cooling chamber 180, and at least a portion of the heat-conducting columns 121 is provided in the cooling chamber 180. During the process of the cooling chamber 180 cooling the drive control board 120, a coolant is provided inside the cooling chamber 180, and a plurality of heat-conducting columns 121 extend into the coolant, which can significantly improve the heat dissipation capacity of the drive control board 120, ensure the working performance of the drive control board 120, and further help improve the working stability, reliability and service life of the motor controller 100.

[0103] Please refer to Figures 1 to 12 In this embodiment, the cooling chamber 180 has a liquid inlet 181 and a liquid outlet, and the cross-sectional area of ​​the liquid inlet 181 is larger than the cross-sectional area of ​​the liquid outlet.

[0104] In order to improve the heat exchange efficiency of the drive control board 120, during the operation of the motor controller 100, the coolant inside the cooling chamber 180 is updated in real time. The cooling chamber 180 is provided with a liquid inlet 181 and a liquid outlet. The coolant flows into the cooling chamber 180 from the liquid inlet 181 and continuously exchanges heat with the heat-conducting column 121. The cross-sectional area of ​​the liquid inlet 181 is larger than the cross-sectional area of ​​the liquid outlet, so that it can be ensured that the coolant flowing into the cooling chamber 180 is larger than the coolant discharged from the cooling chamber 180, thereby avoiding the cavity effect (no coolant in the cooling chamber 180), improving the heat exchange and heat dissipation capacity of the drive control board 120, ensuring the working performance of the drive control board 120, and thus helping to improve the stability, reliability and service life of the motor controller 100.

[0105] Please refer to Figures 1 to 12 In this embodiment, a first group of reinforcing ribs 190 and a second group of reinforcing ribs 191 are provided on the side of the first shell 110 away from the first accommodating chamber 110S. Along the thickness direction of the first shell 110, the first group of reinforcing ribs 190 are arranged opposite to the drive control plate 120. The height of the first group of reinforcing ribs 190 is greater than the height of the second group of reinforcing ribs 191. A protective rib 200 and an exhaust valve 210 are also provided on the first shell 110. The protective rib 200 is separated from the first group of reinforcing ribs 190 to form a protective chamber, and part of the exhaust valve 210 extends into the protective chamber.

[0106] A first group of reinforcing ribs 190 and a second group of reinforcing ribs 191 are provided on the side of the first shell 110 facing away from the first accommodating chamber 110S, that is, the first group of reinforcing ribs 190 and the second group of reinforcing ribs 191 are provided on the outer side of the first shell 110, and along the thickness direction of the first shell 110, the first group of reinforcing ribs 190 are arranged opposite to the drive control plate 120, and the height of the first group of reinforcing ribs 190 is greater than that of the second group of reinforcing ribs 191, and the protective ribs 200 are spaced apart from the first group of reinforcing ribs 190 to form a protection chamber, and part of the exhaust valve 210 extends into the protection chamber, that is, along the thickness direction of the first shell 110, the height of the exhaust valve 210 is lower than the first group of reinforcing ribs 190 and the protective ribs 200, so that the first group of reinforcing ribs 190 and the protective ribs 200 can be fully utilized to protect the exhaust valve 210, thereby reducing the probability of failure of the exhaust valve 210. Furthermore, the exhaust valve 210 is protected by a first set of reinforcing ribs 190 and protective ribs 200 disposed on the first shell 110. No additional structure is required to protect the exhaust valve 210. The structure of the motor controller 100 is simpler, materials are saved, and the manufacturing and design costs of the motor controller 100 are reduced.

[0107] Moreover, the first group of reinforcing ribs 190 and the second group of reinforcing ribs 191 and the protective ribs 200 are arranged on the outside of the first shell 110, which can also change the mode of the first shell 110 of the motor controller 100, 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.

[0108] Please refer to Figures 13 to 17 , Fig.13 A schematic diagram of the structure of a capacitor assembly 220 provided in an embodiment of the present application; Fig.14 A schematic diagram of an exploded structure of a capacitor assembly 220 provided in an embodiment of the present application; Fig.15 A schematic diagram of the structure of a copper busbar and a capacitor core 225 provided in an embodiment of the present application; Fig.16 A positive copper busbar 223 is shown; Fig.17 A negative copper busbar 224 is shown.

[0109] In some embodiments, the motor controller 100 further includes a capacitor assembly 220, which is fixed on the first housing 110. The capacitor assembly 220 includes a second housing 221, a copper bar and a capacitor core 225. The second housing 221 includes a receiving cavity, and the copper bar includes a positive copper bar 223 and a negative copper bar 224. The capacitor core 225 is located between the positive copper bar 223 and the negative copper bar 224 along the height direction. The positive copper bar 223 and the negative copper bar 224 are both provided with through holes, and the through holes are used to fill the injection plastic 226, so that the capacitor core 225, the copper bar and the second housing 221 are fixed by the injection plastic 226.

[0110] When the capacitor core 225, the positive copper bar 223 and the negative copper bar 224 need to be encapsulated in the second shell 221, the positive copper bar 223, the negative copper bar 224 and the capacitor core 225 are all placed in the accommodation space of the second shell 221, so that along the height direction of the capacitor core 225, the capacitor core 225 is located between the positive copper bar 223 and the negative copper bar 224, and there is a gap between the capacitor core 225, the positive copper bar 223, the negative copper bar 224 and the second shell 221. When the liquid injection plastic 226 is poured and injected on the top of the second shell 221, the injection plastic 226 flows along the The gap can flow into the accommodation space of the second shell 221 and fill the gap between the capacitor core 225 and the second shell 221, the gap between the positive copper bar 223 and the second shell 221, and the gap between the negative copper bar 224 and the second shell 221, and the injection plastic 226 can flow into the gap between the positive copper bar 223 and the capacitor core 225, and the gap between the negative copper bar 224 and the capacitor core 225 along the through holes provided in the positive copper bar 223 and the negative copper bar 224, and fill the gap between the positive copper bar 223 and the capacitor core 225, and the gap between the negative copper bar 224 and the capacitor core 225. After the injection plastic 226 is cooled, the injection plastic 226 becomes solid, so that the capacitor core 225 and the positive and negative copper bars 224 can be encapsulated in the second shell 221, so as to improve the reliability of the capacitor assembly 220.

[0111] Therefore, through holes are provided on the positive copper busbar 223 and the negative copper busbar 224 so that the liquid injection molding material 226 can flow into the gap between the positive copper busbar 223 and the negative copper busbar 224, the capacitor core 225 and the second shell 221, so as to reduce the generation of voids, which is beneficial to improving the reliability and stability of the connection between the components of the capacitor assembly 220, and further beneficial to improving the electrical and mechanical properties of the capacitor assembly 220.

[0112] In addition, along the height direction of the capacitor core 225, the positive copper bar 223 and the negative copper bar 224 are located on both sides of the capacitor core 225, which can reduce the probability of short circuit between the positive copper bar 223 and the negative copper bar 224, and the capacitor core 225 can support the positive copper bar 223 and the negative copper bar 224, thereby improving the reliability of the capacitor core 225 and the positive copper bar 223 and the negative copper bar 224.

[0113] Please refer to Figures 13 to 17 In some embodiments, the positive copper busbar 223 includes a first body 230 and a positive terminal 231, the negative copper busbar 224 includes a second body 232 and a negative terminal 234, the capacitor core 225 is located between the first body 230 and the second body 232 in the height direction and is connected to the two, the positive terminal 231 and the negative terminal 234 both extend out of the accommodating space of the second shell 221, the through hole includes a first through hole 235, the first body 230 and the second body 232 are both provided with the first through hole 235, the first body 230 and the capacitor core 225 are welded through the first through hole 235 provided on the first body 230, and the second body 232 and the capacitor core 225 are welded through the first through hole 235 provided on the second body 232.

[0114] The first body 230 of the positive copper bar 223 is welded to the upper surface of the capacitor core 225 through the first through hole 235, and the second body 232 of the negative copper bar 224 is welded to the lower surface of the capacitor core 225 through the first through hole 235, so that the positive copper bar 223 and the negative copper bar 224 can be fixed on both sides of the capacitor core 225 along the height direction, thereby improving the reliability of the electrical connection between the capacitor core 225 and the positive and negative copper bars 224. At the same time, the first through hole 235 is provided in the first body 230 and the second body 232, so that the injection plastic 226 can fill the gap between the first body 230 and the capacitor core 225, and the gap between the second body 232 and the capacitor core 225 through the first through hole 235, thereby improving the reliability of the connection between the capacitor core 225 and the positive and negative copper bars 224.

[0115] Among them, the positive terminal 231 of the positive copper bar 223 and the negative terminal 234 of the negative copper bar 224 are used to electrically connect the capacitor core 225 with the battery and the drive control board 120. Specifically, the positive terminal 231 includes a first terminal 231A and a second terminal 231B, the first terminal 231A is used to connect to the positive electrode of the battery, and the second terminal 231B is used to connect to the positive electrode of the drive control board 120, wherein the second terminal 231B is provided on the first body 230. The negative terminal 234 includes a third terminal 234A and a fourth terminal 234B, the third terminal 234A is used to connect to the negative electrode of the battery, and the fourth terminal 234B is used to connect to the negative electrode of the drive control board 120, so that the capacitor core 225 connected to the positive and negative copper bars 224 is electrically connected to the battery and the drive control board 120.

[0116] Please refer to Figures 13 to 17 In this embodiment, the positive copper busbar 223 also includes a third body 236 vertically connected to the first body 230, and the negative copper busbar 224 also includes a fourth body 237 vertically connected to the second body 232. Along the width direction of the capacitor core 225, the capacitor core 225 is located between the third body 236 and the fourth body 237.

[0117] The through holes of the positive copper busbar 223 also include a second through hole 258, and the through holes of the negative copper busbar 224 also include a third through hole 238 and a fourth through hole 239. The second through hole 258 is arranged at the connection between the first body 230 and the third body 236, the third through hole 238 is arranged at the connection between the second body 232 and the fourth body 237, and the fourth through hole 239 is arranged in the fourth body 237.

[0118] In this embodiment, since the first terminal 231A is narrower along the length direction of the capacitor component 220, the first terminal 231A is arranged on the third body 236 extending along the height direction of the capacitor component 220, thereby increasing the conductive area. That is, the size of the third body 236 along the length direction of the capacitor component 220 is larger than the size of the first terminal 231A directly arranged on the first body 230, which is beneficial to reducing the loop impedance and making the first terminal 231A have good conductivity. Similarly, since the third terminal 234A and the fourth terminal 234B are narrow in the length direction of the capacitor assembly 220, the third terminal 234A and the fourth terminal 234B are arranged on the fourth body 237 extending in the height direction of the capacitor assembly 220, thereby increasing the conductive area, that is, the size of the fourth body 237 along the length direction of the capacitor assembly 220 is larger than the size of the third terminal 234A and the fourth terminal 234B directly arranged on the fourth body 237, and it is beneficial to reduce the size of the third terminal 234A and the fourth terminal 234B extending in the height direction, thereby reducing the loop impedance, so that the third terminal 234A and the fourth terminal 234B have good conductivity. Among them, along the height direction of the capacitor assembly 220, there should be a certain gap between the third body 236 and the fourth body 237 to reduce the risk of interference. When the above-mentioned certain gap is met, the size of the fourth body 237 along the height direction of the capacitor assembly 220 can be appropriately increased, which is beneficial to further improve the conductivity of the third terminal 234A and the fourth terminal 234B.

[0119] In addition, there may be a gap between the third body 236 and the fourth body 237 and the side wall of the battery core, and the third body 236 and the fourth body 237 play a restraining role on the capacitor core 225. The second through hole 258 is provided at the connection between the first body 230 and the third body 236, so that the injection plastic 226 can fill the gap between the positive copper bar 223 and the capacitor core 225 at the connection between the first body 230 and the third body 236 through the second through hole 258, and the injection plastic 226 can flow into the gap between the third body 236 and the side wall of the capacitor core 225 through the second through hole 258, thereby reducing the risk of generating a cavity between the capacitor core 225 and the positive copper bar 223. The third through hole 238 is provided at the connection between the second body 232 and the fourth body 237, so that the injection plastic 226 can fill the gap between the negative copper bar 224 and the capacitor core 225 at the connection between the second body 232 and the fourth body 237 through the third through hole 238, and the injection plastic 226 can flow into the gap between the fourth body 237 and the side wall of the battery core through the third through hole 238, thereby reducing the risk of voids between the capacitor core 225 and the negative copper bar 224. At the same time, the fourth through hole 239 is provided in the fourth body 237, so that the injection plastic 226 can further fill the gap between the fourth body 237 and the side wall of the capacitor core 225 through the fourth through hole 239, further reducing the risk of voids between the capacitor core 225 and the negative copper bar 224, and improving the electrical and mechanical properties of the capacitor assembly 220.

[0120] The first body 230 and the third body 236 of the positive copper busbar 223 can be integrally formed by stamping and bending, and the second body 232 and the fourth body 237 of the negative copper busbar 224 can be integrally formed by stamping and bending.

[0121] In summary, through the through holes located around the capacitor core 225, the injection plastic 226 can flow into the various gaps between the positive and negative copper bars 224 and the capacitor core 225 in all directions, which greatly improves the reliability of the injection plastic 226 filling the gaps, thereby greatly reducing the risk of voids between the capacitor core 225 and the positive and negative copper bars 224.

[0122] Please refer to Figures 13 to 17 In some embodiments, the capacitor core 225 includes a plurality of core monomers 240 distributed along the length direction, and the first body 230 and the second body 232 are both provided with a plurality of first through holes 235 distributed at intervals along the length direction, and each first through hole 235 is used for welding with each core monomer 240.

[0123] In this embodiment, the capacitor core 225 has a plurality of core monomers 240 along the length direction, and the capacitor core 225 is installed in the housing so that the plurality of core monomers 240 are all located in the housing. Compared with the traditional plurality of capacitor monomers individually welded to the PCB board, the plurality of core monomers 240 of the present application are located in the second housing 221, which can improve the integration degree of the capacitor assembly 220. At the same time, the first body 230 and the second body 232 are both provided with a plurality of first through holes 235 spaced apart along the length direction, so that the extensions 241 in each first through hole 235 can be welded with each core monomer 240, further improving the stability and reliability of welding the positive and negative copper bars 224 with each core monomer 240.

[0124] In addition, the injection molding material 226 can flow into the gaps between the core monomers 240 through the through holes, thereby reducing the risk of voids in the core monomers 240 and improving the electrical and mechanical properties of the capacitor core 225 .

[0125] Please refer to Figures 13 to 17 In some embodiments, the second housing 221 is provided with a blocking portion for separating adjacent positive terminals 231 and negative terminals 234 .

[0126] In this embodiment, the second shell 221 is provided with a blocking portion extending along the height direction of the capacitor core 225, and the blocking portion can separate the first terminal 231A of the positive terminal 231 and the third terminal 234A of the negative terminal 234, thereby reducing the risk of close creepage between the first terminal 231A and the third terminal 234A along the length direction of the capacitor core 225, which is beneficial to improving the reliability and safety of the operation of the capacitor assembly 220.

[0127] Please refer to Figures 13 to 17 In some embodiments, an insulating paper 242 is disposed between the positive copper bus 223 and the negative copper bus 224 along the width direction.

[0128] In this embodiment, along the width direction of the capacitor core 225, the insulating paper 242 is used to separate the positive terminal 231 of the positive copper bus 223 and the negative terminal 234 of the negative copper bus 224, thereby reducing the risk of creepage between the positive terminal 231 and the negative terminal 234 along the width direction, thereby reducing the risk of short circuit in the capacitor assembly 220 and improving the safety of the capacitor assembly 220.

[0129] In addition, along the height direction of the capacitor core 225, the positive copper bar 223 and the negative copper bar 224 are located on both sides of the capacitor core 225. Compared with the positive and negative copper bars 224 being located on one side of the capacitor core 225, the amount of insulating paper 242 between the positive copper bar 223 and the negative copper bar 224 can be reduced, thereby reducing production costs and preventing the inconvenience caused by arranging larger insulating paper 242, thereby reducing assembly efficiency.

[0130] Please refer to Figures 13 to 17 In some embodiments, the capacitor assembly 220 also includes a heat sink 245 installed on the second shell 221, the bottom wall of the second shell 221 is provided with a first opening, the heat sink 245 dissipates heat through the first opening, and an insulating paper 242 is provided between the heat sink 245 and the negative copper busbar 224.

[0131] In this embodiment, the heat sink 245 can be a heat sink aluminum plate, which has good thermal conductivity. The heat sink aluminum plate can dissipate heat through the first opening, thereby reducing the temperature of the capacitor assembly 220 when it is working, so as to improve the performance and service life of the capacitor assembly 220. At the same time, since the heat sink aluminum plate has good electrical conductivity, an insulating paper 242 is provided between the heat sink 245 and the negative copper bar 224, so as to further reduce the risk of short circuit of the capacitor assembly 220, so as to improve the safety of the capacitor assembly 220. In addition, when the negative copper bar 224 and the positive copper bar 223 are located on both sides of the capacitor core 225, that is, when the negative copper bar 224 is located at the bottom of the capacitor core 225, the negative copper bar 224 can dissipate heat through the heat sink 245 provided at the bottom of the second housing 221, thereby reducing the temperature of the negative copper bar 224 and improving the working stability of the capacitor core 225.

[0132] Please refer to Figures 13 to 17 In some embodiments, a reinforcing rib 246 is provided in the accommodation space of the second shell 221 to improve the strength of the second shell 221 .

[0133] Please refer to Figures 1 to 12 In some embodiments, the drive control board 120 includes a board body, a control element and a drive element. The board body is fixed to the first housing 110. The control element and the drive element are integrated on the board body. The drive element is used to provide power for the motor 101, and the control element is used to control the working state of the motor 101. In this embodiment, the board body is provided with a drive element and a control element to integrate the traditional control board and the drive board into a drive control board 120 having the performance of the motor 101 and controlling the motor 101, which is conducive to reducing the printed circuit board (PCB) (Printed Circuit Board-PCB) provided in the motor controller 100 for mounting the drive element and the control element, thereby helping to reduce the occupied space of the drive unit and the control unit in the motor controller 1001, improving the degree of integration in the motor controller 100, and helping to reduce the volume, thereby making the motor controller 100 miniaturized and lightweight.

[0134] In some embodiments, the control elements on the traditional control board are integrated in the gap between the drive elements in the drive board, so that the drive board with the control elements and the drive elements is formed into the drive control board 120 of the present application, thereby facilitating production and manufacturing. At the same time, the drive elements and the control elements can be arranged on both sides of the plate body along the thickness direction, saving the arrangement space, thereby helping to reduce the volume of the plate body, and helping to further improve the degree of integration in the motor controller 100.

[0135] In some embodiments, the motor controller 100 includes a filter 248. Along the length direction of the motor controller 100, the mounting member 130, the drive control board 120, the capacitor assembly 220 and the filter 248 are sequentially arranged inside the motor controller 100. In this embodiment, the filter 248 is used to reduce electromagnetic interference and improve the output waveform quality, the capacitor assembly 220 is used to store energy and smooth voltage, and the drive control board 120 is used to efficiently convert and control current.

[0136] Along the length direction of the motor controller 100, the mounting member 130, the drive control board 120, the capacitor assembly 220 and the filter 248 are sequentially arranged inside the motor controller 100, which is beneficial to reducing the size of the motor controller 100 along the width direction, making the system path inside the motor controller 100 as short as possible, which is beneficial to saving layout space and arranging the input end (the filter 248 is electrically connected to the high-voltage DC line of the battery) and the output end (the second connection terminal 132B is connected to the wiring harness terminal 140 of the motor 101) of the motor controller 100 along the minimum path.

[0137] Please refer to Figures 1 to 12 In this embodiment, the motor controller 100 further includes a low-voltage connector 249, an exhaust valve 210, a sealing cover 250 and a plugging cover 257. The low-voltage connector 249 is integrated on the drive control board 120 and is used to connect the vehicle and the motor controller 100 signals. The exhaust valve 210, the sealing cover 250 and the plugging cover 257 are all installed on the first housing 110. The exhaust valve 210 is used to be waterproof and breathable and balance the pressure difference between the inside and outside of the motor controller 100. The sealing cover 250 is used to seal the conductive member 132 connected to the motor 101. The plugging cover 257 blocks the wiring hole to seal the high-voltage DC line connected to the power battery.

[0138] Please refer to Figures 1 to 12The first accommodating chamber 110S includes a first cavity 251, a second cavity 252, a third cavity 253, and a fourth cavity 254 distributed along the length direction of the motor controller 100. The filter 248 is accommodated in the first cavity 251, the capacitor assembly 220 is accommodated in the second cavity 252, at least part of the drive control board 120 extends into the third cavity 253, and the mounting member 130 is accommodated in the fourth cavity 254, which is beneficial to improving the space utilization of the motor controller 100, reducing the size of the motor controller 100, and making the motor controller 100 lightweight.

[0139] In this embodiment, along the thickness direction of the motor controller 100, the depth of the second cavity 252 is greater than the depths of the first cavity 251, the third cavity 253 and the fourth cavity 254. Since the thickness of the capacitor assembly 220 is greater than the thickness of the filter 248, the drive control board 120 and the mounting member 130, the depth of the second cavity 252 is greater than the depths of the first cavity 251, the third cavity 253 and the fourth cavity 254, so that after the capacitor assembly 220, the drive control board 120, the filter 248 and the mounting member 130 are installed in the first housing 110, the height position difference between the components in the first accommodating chamber 110S is small, the depth of the second cavity 252 is greater than the depth of the first cavity 251, and the depth of the first cavity 251 is greater than the depth of the first cavity 251. The depth of the third cavity 253 is greater than the depth of the third cavity 253, and the depth of the third cavity 253 is greater than the depth of the fourth cavity 2541114, so that the cross-section of the first accommodating chamber 110S is stepped, which is beneficial to improving the strength of the first shell 110, and can also change the mode of the first shell 110 of the motor controller 100, 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.

[0140] The size of the first cavity 251 is smaller than that of the second cavity 252 , the third cavity 253 , and the fourth cavity 254 .

[0141] In this embodiment, along the width direction of the motor controller 100, the size of the first cavity 251 is smaller than the first cavity 251 and the third cavity 253, and the size of the first cavity 251 is smaller than the fourth cavity 254, so that the size of each cavity along the width direction of the motor controller 100 is matched according to the size of the components accommodated therein, which is beneficial to reduce the size of the first shell 110 along the width direction, and further helps to reduce the size of the motor controller 100 along the width direction, thereby improving the degree of integration of the components in the motor controller 100.

[0142] Please refer to Figures 1 to 12In some embodiments, the cooling chamber 180 includes a second opening, and a sealing ring 259 is arranged on the outer periphery of the second opening. The heat conductive column 121 extends into the cooling chamber 180 through the second opening. The drive control board 120 can press the sealing ring 259 to reduce the risk of coolant leakage and improve the safety of the motor controller 100.

[0143] In some embodiments, the cooling chamber 180 includes a liquid storage chamber 183, a first diverter groove 184, a second diverter groove 185, a liquid inlet 181 and a liquid outlet 182, the first diverter groove 184 is connected with the liquid inlet 181 and the liquid storage chamber 183, the second diverter groove 185 is connected with the liquid outlet 182 and the liquid storage chamber 183, the liquid inlet 181 and the liquid outlet 182 are located on both sides of the liquid storage chamber 183 and are diagonally arranged, and the first diverter groove 184 and the second diverter groove 185 are located on both sides of the liquid storage chamber 183 and are diagonally arranged.

[0144] The first housing 110 is also connected with a liquid inlet pipe, which is used to pass the coolant into the cooling cavity. The coolant flows into the first diverter groove 184 through the liquid inlet 181, and then flows into the liquid storage cavity 183 through the first diverter groove 184, and then flows into the second diverter groove 185 through the liquid storage cavity 183, and then flows into the liquid outlet 182 through the second diverter groove 185. Therefore, the liquid inlet 181 and the liquid outlet 182 are located on both sides of the liquid storage cavity 183 and are arranged diagonally, which is conducive to improving the resistance of the coolant flowing in the liquid storage cavity 183, reducing the flow rate of the coolant in the liquid storage cavity 183, and increasing the residence time of the coolant in the liquid storage cavity 183, thereby improving the heat dissipation effect of the drive control board 120. At the same time, the first shunt groove 184 and the second shunt groove 185 are located on both sides of the liquid storage chamber 183 and are arranged diagonally to extend the path of the coolant flowing along the length direction of the motor controller 100, thereby improving the uniformity of the coolant heat dissipation to the drive control board 120. In addition, the liquid inlet 181 is located in the middle of the motor controller 100 in the height direction, which is convenient for exhausting during the process of adding coolant.

[0145] The first shell 110 is also provided with a liquid outlet 256. Along the height direction of the motor controller 100, the liquid outlet 256 is located above the liquid outlet 182 and the liquid inlet 181 so that the coolant can fill the entire liquid storage cavity 183, further improving the heat dissipation capacity of the drive control board 120.

[0146] The cooling chamber 180 is rectangular, and the liquid inlet 181 and the liquid outlet 182 are located on the first diagonal of the cooling chamber 180, and the first diverter groove 184 and the second diverter groove 185 are located on the second diagonal of the cooling chamber 180, which is beneficial to improving the path of the coolant flowing along the length direction of the motor controller 100, and further improving the heat dissipation effect of the cooling chamber 180 on the drive control board 120.

[0147] An embodiment of the present application further provides a powertrain for a vehicle, comprising a motor 101, a battery, and a motor controller 100 as described in any one of the above embodiments, wherein the motor controller 100 is electrically connected to the battery and the motor 101, respectively.

[0148] The powertrain for a vehicle provided in the embodiment of the present application, wherein the motor controller 100 includes a protective housing 150, the protective housing 150 defines a second accommodating chamber 150S, and the protective housing 150 is sleeved on the outside of the second connection terminal 132B so that the second connection terminal 132B is located in the second accommodating chamber 150S. In other words, the protective housing 150 can envelop the second connection terminal 132B, and the protective housing 150 provides a solid physical barrier for the second connection terminal 132B, preventing external physical impacts, dust, moisture and other environmental factors from directly damaging the second connection terminal 132B, thereby reducing the probability of power failure or leakage of the second connection terminal 132B, and improving the stability of the connection between the motor 101 and the motor controller 100.

[0149] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0150] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0151] The above is only the embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

[0152] Although the embodiments of the present application have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A motor controller, characterized in that: include: A first housing defines a first accommodating chamber; A drive control plate, disposed in the first accommodating chamber; A mounting member, comprising a mounting member body and a conductive member, wherein the mounting member body is fixed to the first housing, the conductive member is disposed on the mounting member body and comprises a first connecting terminal and a second connecting terminal, the first connecting terminal is electrically connected to the drive control board, and the second connecting terminal is used to be electrically connected to the motor; The protective shell defines a second accommodating chamber, and the protective shell is sleeved on the outer side of the second connecting terminal so that the second connecting terminal is located in the second accommodating chamber.

2. The motor controller according to claim 1, characterized in that: The second connecting terminal is connected to the wiring harness terminal of the motor via a fastener; The first shell, the mounting body and the protective shell are respectively provided with a first through hole, a second through hole and a third through hole for fasteners to pass through. Along the axial direction of the second through hole, the first through hole, the second through hole and the third through hole are arranged opposite to the second connecting terminal.

3. The motor controller according to claim 2, characterized in that: The protective shell is also provided with a fourth through hole for the wiring harness terminal to pass through, the third through hole and the fourth through hole are both connected to the second accommodating chamber, and the extension direction of the third through hole is different from the extension direction of the fourth through hole.

4. The motor controller according to claim 2, characterized in that: A nut is also provided in the protective housing, and the fastener is configured as a bolt, and the bolt passes through the second connecting terminal and the wiring harness terminal to cooperate with the nut and bolt; Wherein, the bolt comprises a bolt head and a screw rod, and along the extending direction of the screw rod, the bolt head and the nut are respectively arranged on both sides of the wiring harness terminal and the second connecting terminal.

5. The motor controller according to claim 2, characterized in that: The mounting member body includes a first mounting portion, a connecting portion, and a second mounting portion, the first mounting portion is fixed to the first housing, and the second through hole is provided in the first mounting portion; The first mounting portion is spaced apart from the second mounting portion in the axial direction of the second through hole, the connecting portion connects the first mounting portion and the second mounting portion, and the conductive member is disposed on the second mounting portion.

6. The motor controller according to claim 5, characterized in that: Along the axial direction of the second through hole, a projection of the first mounting portion and a projection of the second mounting portion do not overlap.

7. The motor controller according to claim 6, characterized in that: A portion of the conductive member is embedded in the second mounting portion, and another portion of the conductive member extends out of the second mounting portion to form the second connecting terminal.

8. The motor controller according to claim 5, characterized in that: A plurality of spaced-apart stop ribs are also provided between the first mounting portion and the connecting portion.

9. The motor controller according to any one of claims 1 to 8, characterized in that: There are a plurality of the second connection terminals, and the plurality of the second connection terminals are all disposed in the second accommodating chamber.

10. The motor controller according to claim 1, characterized in that: The first housing is also provided with a cooling chamber for cooling the drive control plate; A plurality of heat-conducting columns are arranged on one side of the drive control plate facing the cooling chamber, and at least a portion of the heat-conducting columns extends into the cooling chamber.

11. The motor controller according to claim 10, characterized in that: The cooling chamber has a liquid inlet and a liquid outlet, and the cross-sectional area of ​​the liquid inlet is larger than the cross-sectional area of ​​the liquid outlet.

12. The motor controller according to claim 1, characterized in that: A first group of reinforcing ribs and a second group of reinforcing ribs are arranged on the side of the first shell facing away from the first accommodating chamber, and along the thickness direction of the first shell, the first group of reinforcing ribs are arranged opposite to the drive control plate, and the height of the first group of reinforcing ribs is greater than the height of the second group of reinforcing ribs; The first shell is also provided with a protective rib and an exhaust valve. The protective rib is spaced apart from the first group of reinforcing ribs to form a protective chamber. Part of the exhaust valve extends into the protective chamber.

13. A powertrain for a vehicle, characterized in that: The invention comprises a motor, a battery and a motor controller as claimed in any one of claims 1 to 12, wherein the motor controller is electrically connected to the battery and the motor respectively.

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