CN221228140U - Motor controller - Google Patents

Abstract

The application relates to a motor controller, which is characterized by comprising: the box body, the main control board, the driving module, the capacitor and the cooling fan; the box body comprises a first shell and a second shell which are buckled relatively; the main control board, the driving module and the capacitor are all arranged in the cavity of the box body; the main control board is provided with a motor control chip, the motor control chip is electrically connected with the driving module, the capacitor is electrically connected with the driving module, and the driving module is suitable for being electrically connected with an external motor; the radiator fan is arranged on one side of the second shell, and the blowing end of the radiator fan faces the cavity inside the box body. The application adopts an air cooling mode to cool the inside of the box body, has excellent cooling effect, simple integral cooling structure and simple cooling mode, and effectively keeps the good working environment inside the motor controller.

Description

Motor controller

Technical Field

The application relates to the technical field of motor control, in particular to a motor controller.

Background

With the continuous research and development of battery technology and the maturation of high-power electronic and electric appliance technology, electric power is applied to special equipment on a large scale, and in order to improve the utilization efficiency of the electric power, a motor drive controller capable of converting the electric power is particularly important nowadays. The existing motor drive controller has the problem of poor heat dissipation capacity, because the structure of electronic devices in the motor drive controller is complex, the net distance between the electronic devices is too small, and the heat dissipation capacity of multiple electronic devices is large when the electronic devices work simultaneously, if the heat dissipation capacity of the motor drive controller is poor, the service life of the motor drive controller can be shortened, and potential safety hazards can also be generated.

How to enhance the heat dissipation capability of the motor driving controller and keep the good working environment inside the motor driving controller is a problem to be solved by those skilled in the art.

Disclosure of Invention

In view of the above, the present application provides a motor controller, which is suitable for enhancing the heat dissipation capability of the motor driving controller.

According to an aspect of the present application, there is provided a motor controller, comprising: the box body, the main control board, the driving module, the capacitor and the cooling fan;

The box body comprises a first shell and a second shell which are buckled relatively; the main control board, the driving module and the capacitor are all arranged in the cavity of the box body;

The main control board is provided with a motor control chip, the motor control chip is electrically connected with the driving module, the capacitor is electrically connected with the driving module, and the driving module is suitable for being electrically connected with an external motor;

The radiator fan is arranged on one side of the second shell, and the blowing end of the radiator fan faces the cavity inside the box body.

In one possible implementation manner, a heat dissipation groove is formed in the side wall of the second shell;

The heat dissipation fan is matched with the heat dissipation groove, and is embedded into the second shell through the heat dissipation groove.

In one possible implementation manner, a heat dissipation air duct is formed on the side wall of the heat dissipation groove, and the heat dissipation air duct is arranged adjacent to the driving module;

The cooling fan is communicated with the driving module through a cooling air duct.

In one possible implementation, the driving module includes: a power inverter and a driving board;

The output end of the motor control chip is electrically connected with the input end of the driving plate; the output end of the driving plate is electrically connected with the input end of the power inverter;

The output end of the capacitor is electrically connected with the input end of the power inverter, and the output end of the power inverter is electrically connected with the external motor.

In one possible implementation manner, the device further comprises a detection module;

the detection module is electrically connected with the motor control chip.

In one possible implementation, the side wall of the box is provided with an aviation connection plug;

The aviation connecting plug is provided with more than two aviation connecting plugs, and the aviation connecting plugs are all located on the same side of the box body.

In one possible implementation, more than two aerial connection plugs comprise: debugging an aviation connecting plug, a resolver aviation connecting plug, a first direct current aviation connecting plug, a second direct current aviation connecting plug and a three-phase aviation connecting plug;

The output end of the first direct current aviation connecting plug is electrically connected with the input end of the main control board; the output end of the debugging aviation connecting plug and the output end of the resolver aviation connecting plug are electrically connected with the input end of the motor control chip; the output end of the second direct current aviation connecting plug is electrically connected with the input end of the capacitor; the output end of the driving module is electrically connected with the three-phase aviation connecting plug.

In one possible implementation, the method further includes: a rotation speed acquisition board;

The rotating speed acquisition board is electrically connected with the motor control chip.

In one possible implementation, the method further includes: the voltage acquisition board and the current transformer;

the voltage acquisition board and the current transformer are electrically connected with the main control board.

In one possible implementation, the method further includes: a shielding plate;

the shielding plate is located between the main control board and the driving module.

The application adopts an air cooling mode to cool the inside of the box body, has excellent cooling effect, simple integral cooling structure and simple cooling mode, and effectively keeps the good working environment inside the motor controller. Compared with the controller with the same power level, the application has larger volume, low power density, poor heat radiation capability and high processing cost. The application has the advantages of compact structure, light weight, high space utilization rate, strong heat radiation capability, high power density, low processing cost, stability and reliability.

Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features and aspects of the application and together with the description, serve to explain the principles of the application.

FIG. 1 shows an exploded view of a motor controller according to an embodiment of the present application;

fig. 2 shows a main body structure diagram of a motor controller of an embodiment of the present application;

Fig. 3 shows a main body structure diagram of a motor controller of an embodiment of the present application;

FIG. 4 shows a system schematic diagram of a motor controller according to an embodiment of the application;

a first housing 100; a second housing 200; a transfer copper bar 300; a main control board 400; a current transformer 500; a three-phase copper bar 600; a voltage acquisition board 700; a data recording support plate 800; a capacitor 900; a heat radiation fan 10; a USB interface 11; a damper 12; a rotation speed acquisition board 13; a contactor 14; a power inverter 15; an insulation detection plate 16; a shield riser 17; a shielding plate 18; an upper cover 19; debugging the aviation connection plug 20; a three-phase aviation connection plug 21; resolver aviation connector 22; a rotation speed detection aviation connection plug 23; a left side plate 24; a right side plate 25; a rear side plate 26; a front side plate 27; a second dc aviation connection plug 28; an annular rubber pad 29; a vertical rubber pad 30; a left cross member 31; a right cross member 32; a fan cover 33; a receive signal aviation connection plug 34; a first dc aviation connection plug 35; an annular rubber pad 36; a dc copper bar 37; a support pad 38; a shield support block 39; a drive plate 40;422 communication aviation connection plug 41; CAN communication aviation connection plug 42; a data recording plate 43; and a heat radiation hole 44.

Detailed Description

Various exemplary embodiments, features and aspects of the application will be described in detail below with reference to the drawings. In the drawings, like reference numbers indicate identical or functionally similar elements. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

It should be understood, however, that the terms "center," "longitudinal," "transverse," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counter-clockwise," "axial," "radial," "circumferential," and the like indicate or are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the utility model or simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The word "exemplary" is used herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.

In addition, numerous specific details are set forth in the following description in order to provide a better illustration of the application. It will be understood by those skilled in the art that the present application may be practiced without some of these specific details. In some instances, well known methods, procedures, components, and circuits have not been described in detail so as not to obscure the present application.

FIG. 1 shows an exploded view of a motor controller according to an embodiment of the present application; fig. 2 shows a main body structure diagram of a motor controller of an embodiment of the present application; fig. 3 shows a main body structure diagram of a motor controller of an embodiment of the present application; fig. 4 shows a system schematic diagram of a motor controller according to an embodiment of the present application. As shown in fig. 1, the motor controller includes: the box body, the main control board 400, the driving module, the capacitor 900 and the cooling fan 10; the box body comprises a first shell 100 and a second shell 200 which are buckled relatively; the main control board 400, the driving module and the capacitor 900 are all arranged in the cavity of the box body; the main control board 400 is provided with a motor control chip, the motor control chip is electrically connected with a driving module, the capacitor 900 is electrically connected with the driving module, and the driving module is suitable for being electrically connected with an external motor; the heat radiation fan 10 is disposed at one side of the second housing 200, and a blowing side of the heat radiation fan 10 faces the inside of the cavity of the case.

Here, it should be noted that the main control board 400 is provided with a motor control chip; the box is applicable to sealing electronic components such as the main control board 400, the driving module, the capacitor 900 and the like, so that the electronic components are orderly arranged in the box, an external power supply and the like are isolated, and the serial connection of interference signals can be effectively prevented. The box comprises relative buckled first casing 100 and second casing 200, and first casing 100 and second casing 200 can dismantle the setting, the timely maintenance of the inside components and parts of motor drive controller of being convenient for. The output end of the bus interface is electrically connected with the motor control chip, the bus is used for the motor control chip to transmit upper control signals, and the output end of the motor control chip is electrically connected with the input end of the driving module; the motor control chip receives the control signal sent by the upper layer, processes the upper layer signal, then outputs the control signal to the driving module, and the driving module drives the external motor to work through the driving signal of the motor control chip. The fan 10 sets up in the bottom of box, and the one end of blowing of fan 10 is towards the cavity inside of box, and fan 10 is applicable to cooling and heat dissipation for the inside electronic components of box. The application adopts an air cooling mode to cool the inside of the box body, has excellent cooling effect, simple integral cooling structure and simple cooling mode, and effectively keeps the good working environment inside the motor controller. Compared with the controller with the same power level, the application has larger volume, low power density, poor heat radiation capability and high processing cost. The application has compact structure, light weight, high space utilization rate, strong heat dissipation capability, high power density, low processing cost, stability and reliability.

The first housing 100 is provided with a cavity with one end open, and the second housing 200 is provided with a cavity with one end open; the first housing 100 is disposed opposite to the open end of the second housing 200. As shown in fig. 1, the main body of the second housing 200 is a cuboid structure, and the second housing 200 is a cuboid formed by splicing five rectangular plate-mounted structures through screws, and an opening is formed in one side of the cuboid. The main body of the first casing 100 is in a cuboid structure, the first casing 100 is formed by splicing five rectangular plate mounting structures through screws, and is respectively a left side plate 24, a right side plate 25, a rear side plate 26, a front side plate 27 and an upper cover 19 which are fixedly connected, and one surface of the second casing 200 is provided with an opening. The first housing 100 is disposed opposite to the side of the second housing 200 where the opening is provided. The electronic components in the case can be inspected by removing the upper cover 19.

In one possible implementation, the method further includes: two annular rubber gaskets, one annular rubber gasket 29, are provided between the first housing 100 and the second housing 200, sealing the gap between the first housing 100 and the second housing 200. The second annular rubber cushion 36 is arranged around the upper cover 19, and when the upper cover 19 is buckled above the left side plate 24, the right side plate 25, the rear side plate 26 and the front side plate 27, the annular rubber cushion 36 plays a role in sealing.

In one possible implementation, the method further includes: four vertical rubber pads 30; four vertical glue 30 pads are respectively arranged at the joints of the left side plate 24, the right side plate 25, the rear side plate 26 and the front side plate 27.

In one possible implementation, the side wall of the second housing 200 is provided with a heat dissipation groove; the heat radiation fan 10 is matched with a heat radiation groove through which the heat radiation fan 10 is embedded in the second housing 200. As shown in fig. 3, the bottom of the second housing 200 is provided with a recessed groove structure into which the heat dissipation fan 10 is inserted.

In one possible implementation manner, five inner walls of the heat dissipation groove are provided with heat dissipation air channels, and the heat dissipation air channels are arranged adjacent to the driving module; the heat radiation fan 10 is communicated with the driving module through a heat radiation air duct. It should be noted that, the heat dissipation air duct is a plurality of hole structures that adjacently arranged, runs through five inner walls of the heat dissipation groove, makes radiator fan 10 directly communicate with the driving module through the heat dissipation air duct, and the opposite side of the heat dissipation groove is fixed with the driving module, because the driving module is as high-power device, it is easier to produce heat in other devices, and radiator fan 10 is close to the driving module setting, effectively dissipates heat, realizes cooling.

In one possible implementation, the method further includes: the fan cover plate 33, the main body of the fan cover plate 33 is in a rectangular plate structure and is matched with the heat dissipation notch, four corners of the fan cover plate 33 are fixed at the bottom of the second shell 200 through bolts and are buckled at the opening of the heat dissipation notch, so that the internal fan 10 is fixed and isolated. As shown in fig. 3, the fan cover 33 is provided with a plurality of air holes arranged in a ring shape.

In one possible implementation, the method further includes: as shown in fig. 3, more than two heat dissipation holes 44 are formed on the side wall and the bottom of the second housing 200, and a plurality of strip heat dissipation holes 44 are arranged adjacently and in parallel, so that the heat dissipation capability of the application is further improved.

In one possible implementation, the driving module includes: a power inverter 15 and a driving board 40; the output end of the motor control chip is electrically connected with the input end of the driving plate 40; the output end of the driving plate 40 is electrically connected with the input end of the power inverter 15; the output end of the capacitor 900 is electrically connected with the input end of the power inverter 15; the output of the power inverter 15 is electrically connected to an external motor. Here, it should be noted that, the motor control chip is connected to the bus, and is configured to receive a signal of the upper controller, and the driving signal is output to the driving board 40 through the electrical connection between the main control board 400 and the driving board 40; capacitor 900 is adapted to input a dc voltage to power inverter 15, and power inverter 15 is adapted to convert the dc power to ac power required for driving the motor and to drive the external motor. Further, the output end of the power inverter 15 is connected to an external motor through an aviation connection plug.

Further, the output end of the motor control chip is electrically connected to the input end of the driving board 40 through twisted pair, and the output end of the driving board 40 is electrically connected to the input end of the power inverter 15 through twisted pair. The twisted pair is adopted as a conductor for electric connection, so that the reliability is high, the use is convenient, the anti-interference capability between electronic components can be improved, and common mode interference can be effectively restrained.

In one possible implementation, capacitor 900 employs a thin film capacitor in a dc support capacitor; one pole of the direct current support capacitor 900 is electrically connected with the power inverter 15 of the driving module through a twisted pair, and the other pole of the direct current support capacitor 900 is connected with 270V direct current through a fastening bolt. The capacitor 900 has the function of a filter and a stabilizing circuit. The capacitor 900 is located at the side of the heat sink and at the bottom of the cavity of the second housing 200.

In one possible implementation, the side wall of the box is provided with an aviation connection plug; the aviation connecting plug is provided with more than two aviation connecting plugs, and the aviation connecting plugs are all located on the same side of the box body. It should be noted that, aviation connecting plug sets up on the outer wall of box, and aviation connecting plug is convenient for be connected between the inside electronic components of box and the outside electronic components of box, makes things convenient for the connection or disconnection between the circuit. Further, be equipped with the aviation connecting plug hole of equidimension on the outer wall of box, be applicable to and place aviation connecting plug, aviation connecting plug inserts on aviation connecting plug hole, aviation connecting plug both ends are located the inside and outside both sides of box respectively, adopt the bolt to fix aviation connecting plug on the outer wall of box and consolidate. The aviation connecting plug adopts the sealant to seal, and the effect of aviation connecting plug not only can reduce the interference influence of outside interference signal to the electronic components in the box, can also make the inside electric wire of box arrange in order.

In one possible implementation, more than two aerial connection plugs comprise: debugging aviation connector 20, resolver aviation connector 22, first dc aviation connector 35, second dc aviation connector 28, three-phase aviation connector 21; the output end of the first direct current aviation connecting plug 35 is electrically connected with the input end of the main control board 400, and the first direct current aviation connecting plug 35 is a 28V direct current aviation plug and is suitable for providing the main control board 400 with 28V direct current required by work. The output end of the debugging aviation connecting plug 20 and the output end of the rotary transformer aviation connecting plug 22 are electrically connected with the input end of the motor control chip, and are suitable for receiving external signals and transmitting the external signals to the motor control chip; the output end of the second direct current aviation connecting plug 28 is electrically connected with the input end of the capacitor 900, and the second direct current aviation connecting plug 28 is a 270V direct current aviation plug and is suitable for providing 270V direct current voltage for the capacitor 900; the output end of the driving module is electrically connected with the three-phase aviation connecting plug 21, the power inverter 15 converts direct current transmitted by the capacitor 900 into alternating current and outputs the alternating current to the three-phase aviation connecting plug 21, and the three-phase aviation connecting plug 21 is electrically connected with a stator core of an external motor so as to output driving signals.

In one possible implementation manner, the device further comprises a detection processing module; the detection processing module is electrically connected with the motor control chip. It should be noted that the detection processing module includes: the device comprises a position signal processing circuit, a temperature signal processing circuit, a bus voltage detection circuit, a current signal processing circuit and a debugging interface circuit; each path of detection processing circuit is electrically connected with the motor control chip, receives external signals through respective interfaces, processes the signals and transmits the processed signals to the motor control chip.

Specifically, the input end of the resolver aviation connection plug 22 is electrically connected with an external position sensor through a twisted pair, the output end of the resolver aviation connection plug 22 is electrically connected with a motor control chip through the twisted pair, a position signal processing circuit is formed, and the position signal processing circuit receives and processes a position sensor signal of an external motor through the aviation connection plug and transmits the signal of the position sensor to the motor control chip. The input end of the rotary transformer aviation connecting plug 22 is also electrically connected with an external temperature sensor through a twisted pair, the output end of the rotary transformer aviation connecting plug 22 is electrically connected with a motor control chip of the main control board 400 through the twisted pair to form a temperature signal processing circuit, and the temperature signal processing circuit receives and processes a temperature sensor signal of an external motor through the aviation connecting plug and transmits the signal of the temperature sensor to the motor control chip. The input end of the bus interface is electrically connected with the upper layer control to exchange data, the output end of the bus interface is electrically connected with the input end of the debugging aviation connecting plug 20, and the output end of the debugging aviation connecting plug 20 is electrically connected with the motor control chip to form an upper layer controller signal processing circuit. The debug interface circuitry and other circuitry receive external signals through debug aviation connection plug 20 and transmit to the motor control chip.

Here, it should be noted that the position signal processing circuit is suitable for detecting a position parameter of an external motor, the temperature signal processing circuit is suitable for detecting a temperature parameter of the power inverter 15 and the external motor, the adjustable interface circuit is suitable for debugging a working program of the motor controller, and other circuits include: PWM wave control circuits, etc.

In one possible implementation, the method further includes: the rotating speed acquisition board 13 and the rotating speed detection aviation connecting plug 23; the rotation speed acquisition board 13 is electrically connected with the motor control chip through twisted pair wires. Further, the rotation speed acquisition board 13 is connected with the ECU controller through a rotation speed detection aviation connection plug 23; the rotation speed signal is input to the rotation speed acquisition board 13 through the rotation speed detection aviation connection plug 23, and the rotation speed acquisition board 13 transmits signal processing to the motor control chip.

In one possible implementation, the method further includes: the voltage acquisition board 700 and the current transformer 500; the voltage acquisition board 700 and the current transformer 500 are electrically connected with the main control board 400 through twisted pair wires. Further, the current signal processing circuit receives signals through the current transformer 500 and transmits the signals to the motor control chip; the bus voltage detection circuit receives an external signal through the voltage acquisition board 700 and transmits the external signal to the motor control chip.

In one possible implementation, the method further includes: the data recording plate 43 and the USB interface 11; the main control board 400 is electrically connected with the input end of the data recording board 43 through twisted pair wires; the output end of the data recording plate 43 is electrically connected with the USB interface 11; the main control board 400 transmits the operation data to the data recording board 43 and exports the storage data through the USB interface 11.

In one possible implementation, the method further includes: the received signal aerial connection plug 34, 422 communicates aerial connection plug 41, CAN communication aerial connection plug 42; the received signal aviation connecting plugs 34 and 422 are electrically connected with the motor control chip through twisted pair wires and the CAN communication aviation connecting plug 42; the external control signals are received by the received signal aerial connection plug 34, 422 communication aerial connection plug 41, CAN communication aerial connection plug 42 and transmitted to the motor control chip. The external control signals have 422 a communication signal, a CAN signal, and an ECU signal. 422 communication signals, CAN signals, are used to upload controller status and control controller operation, and ECU signals are input start signals.

In summary, the positions of all aviation connection plugs are described: the second direct current aviation connection plug 28, the three-phase aviation connection plug 21, the rotation speed detection aviation connection plug 23, the resolver aviation connection plug 22, and the debugging aviation connection plug 20 are all disposed on the outer side wall of the second housing 200, and are adjacently arranged along the length direction of the body of the second housing 200. The first direct current aviation connection plug 35, 422 communication aviation connection plug 41, the USB interface 11, the CAN communication aviation connection plug 42, and the received signal aviation connection plug 34 are all disposed on the outer side wall of the first housing 100, and are adjacently arranged along the body length direction of the first housing 100.

In one possible implementation, the method further includes: a shielding plate 18; the shielding plate 18 is located between the main control board 400 and the driving module. The main control board 400 is placed on the shielding plate 18 for fixing; the drive module is located below the shield plate 18 and above the heat sink. The shielding plate 18 is provided with an opening through which twisted pairs between the main control plate 400 and the driving plate 40 pass; the shielding plate 18 is provided with an insulating sticker. Here, it should be noted that the shielding plate 18 plays a supporting role, and effectively isolates strong and weak electricity, so as to achieve the effect of electromagnetic interference resistance and improve the operation stability of the device.

In one possible implementation, the current transformer 500 is fixed on the three-phase switching copper bar 300 through the three-phase copper bar 600, and the current transformer 500 is electrically connected with the main control board 400. The voltage acquisition board 700 is placed on the shielding plate 18 adjacent to the main control board 400.

In one possible implementation, the outer side of the second housing 200 of the case is provided with a connection portion; the connection is provided with a damping device 12. Here, it should be noted that, connecting portion is applicable to the installation and the fixed of box, and further connecting portion is fixed through-hole, and fixed through-hole is equipped with four, and four fixed through-holes set up respectively in the four corners of bottom half, and every fixed through-hole all disposes shock attenuation steel bushing and shock pad, is applicable to the stable installation of box, reduces the influence that vibrations produced for motor drive controller.

In one possible implementation, the method further includes: a data recording support plate 800, and a data recording plate 43 is disposed above the data recording support plate 800. The data recording support plate 800 plays a supporting role for the data recording plate 43.

In one possible implementation, the method further includes: and one pin of the contactor 14 is connected with the direct current copper bar 17, and the other pin is connected with the second direct current aviation connection plug 28.

In one possible implementation, the method further includes: a load resistor; the load resistor is electrically connected to the capacitor 900, and the load resistor is fixed in the front cavity of the housing 200.

In one possible implementation, the method further includes: an insulation detection plate 16; the insulation pickup plate 16 is disposed adjacent to the voltage acquisition plate 700.

In one possible implementation, the method further includes: a shield riser 17; the driving module and the data recording plate 43 are respectively positioned on two opposite sides of the shielding vertical plate 17, so that strong and weak electricity is effectively isolated.

In one possible implementation, the method further includes: left and right cross members 31, 32; the left cross member 31 and the right cross member 32 are respectively mounted on the left side plate 24 and the right side plate 25 in a horizontal direction, and serve to fix both ends of the shielding plate 18.

In one possible implementation, the method further includes: the support cushion block 38 and the shielding support block 39, wherein the support cushion block 38 is positioned between the driving module and the inner side wall of the second shell 200; the shield support block 39 is located between the shield plate 18 and the inner sidewall of the second housing 200.

In one possible implementation, the method further includes: a dc copper bar 37; one end of the direct current copper bar 37 is connected with the capacitor 900, the other end is connected with the contactor 14, and the current transformer 500 is fixed on the direct current copper bar 37.

The foregoing description of embodiments of the application has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the improvement of technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (10)

1. A motor controller, comprising: the box body, the main control board, the driving module, the capacitor and the cooling fan;

The box body comprises a first shell and a second shell which are buckled relatively; the main control board, the driving module and the capacitor are all arranged in the cavity of the box body;

The main control board is provided with a motor control chip, the motor control chip is electrically connected with the driving module, the capacitor is electrically connected with the driving module, and the driving module is suitable for being electrically connected with an external motor;

The cooling fan is arranged on one side of the second shell, and the blowing end of the cooling fan faces the cavity inside the box body.

2. The motor controller according to claim 1, wherein a heat radiation groove is formed in a side wall of the second housing;

The heat dissipation fan is matched with the heat dissipation groove, and the heat dissipation fan is embedded into the second shell through the heat dissipation groove.

3. The motor controller according to claim 2, wherein a heat dissipation air duct is formed on a side wall of the heat dissipation groove, and the heat dissipation air duct is arranged adjacent to the driving module;

The cooling fan is communicated with the driving module through the cooling air duct.

4. A motor controller according to claim 1, wherein the drive module comprises: a power inverter and a driving board;

the output end of the motor control chip is electrically connected with the input end of the driving plate; the output end of the driving plate is electrically connected with the input end of the power inverter;

The output end of the capacitor is electrically connected with the input end of the power inverter, and the output end of the power inverter is electrically connected with the external motor.

5. The motor controller of claim 1, further comprising, a detection module;

the detection module is electrically connected with the motor control chip.

6. A motor controller according to claim 1, wherein the side wall of the housing is provided with an aviation connection plug;

The aviation connecting plug is provided with more than two aviation connecting plugs, and the aviation connecting plugs are all positioned on the same side of the box body.

7. The motor controller of claim 6, wherein more than two of said aviation connection plugs comprise: debugging an aviation connecting plug, a resolver aviation connecting plug, a first direct current aviation connecting plug, a second direct current aviation connecting plug and a three-phase aviation connecting plug;

The output end of the first direct current aviation connecting plug is electrically connected with the input end of the main control board; the output end of the debugging aviation connecting plug and the output end of the rotary transformer aviation connecting plug are electrically connected with the input end of the motor control chip; the output end of the second direct current aviation connecting plug is electrically connected with the input end of the capacitor; and the output end of the driving module is electrically connected with the three-phase aviation connecting plug.

8. A motor controller as claimed in claim 1, further comprising: a rotation speed acquisition board;

the rotating speed acquisition board is electrically connected with the motor control chip.

9. A motor controller as claimed in claim 1, further comprising: the voltage acquisition board and the current transformer;

The voltage acquisition board and the current transformer are electrically connected with the main control board.

10. A motor controller as claimed in claim 1, further comprising: a shielding plate;

the shielding plate is located between the main control board and the driving module.