A control board, motor controller and vehicle

Abstract

The embodiment of the application provides a control board, a motor controller and a vehicle, and belongs to the technical field of controllers. The control board is integrated with an inverter control circuit and an E-shift electronic disengagement circuit. The inverter control circuit is used for converting direct current into alternating current. The E-shift electronic disengagement circuit is used for controlling the disengagement and connection between a gear and a synchronizer in a speed reducer, so as to control the working state of the motor. By using the control board, the motor controller and the vehicle provided by the application, the motor controller and the two control circuits in the speed reducer can be integrated on the same control board, so that the communication between the inverter control circuit and the E-shift electronic disengagement circuit can be realized on one control board, the communication path between the inverter control circuit and the E-shift electronic disengagement circuit is greatly reduced, and the E-shift electronic disengagement circuit can respond to the control signal of the inverter control circuit more quickly and accurately.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of controllers, in particular, relate to a control board, a motor controller and a vehicle. BACKGROUND

[0002] With the development of the new energy vehicle market, the motor electric drive industry has attracted attention from all walks of life, and high-density electric drive system technology has developed rapidly, which also puts forward higher requirements for the integration of the motor.

[0003] The motor is started and stopped by the motor controller. The control board is provided in the motor controller. The inverter control circuit is provided on the control board to realize the inverter function (the function of converting direct current into alternating current) of the motor controller.

[0004] When the inverter control circuit in the traditional motor controller and the E-shift electronic disengagement circuit outside the motor controller need to communicate, a connection line needs to be established between the inverter control circuit and the E-shift electronic disengagement circuit, so that the signal of the inverter control circuit can be transmitted to the E-shift electronic disengagement circuit through the connection line.

[0005] However, due to the complex internal structure of the motor controller, a long transmission path needs to be established between the inverter control circuit and the E-shift electronic disengagement circuit, which results in that the E-shift electronic disengagement circuit takes a long time to receive the control signal of the inverter control circuit. At the same time, the long signal transmission path is easy to be affected by external electromagnetic interference, so that the E-shift electronic disengagement circuit cannot respond to the control signal of the inverter control circuit in time and accurately. SUMMARY

[0006] Embodiments of the present application provide a control board, a motor controller and a vehicle, which aim to solve the problem that the E-shift electronic disengagement circuit cannot respond to the control signal of the inverter control circuit in time and accurately.

[0007] The first aspect of embodiments of the present application provides a control board, which integrates an inverter control circuit and an E-shift electronic disengagement circuit. The inverter control circuit is used to convert direct current into alternating current. The E-shift electronic disengagement circuit is used to control the disengagement and connection between the gear and the synchronizer in the speed reducer, so as to control the working state of the motor.

[0008] Optionally, the inverter control circuit and the E-shift electronic disengagement circuit communicate with each other through corresponding welding points.

[0009] The second aspect of embodiments of the present application provides a motor controller, which is provided with the control board as described in the first aspect of embodiments.

[0010] Optionally, the motor controller comprises a controller housing.

[0011] The controller housing is provided with a transverse partition, which divides the space in the controller housing into two areas for accommodating high-voltage components and low-voltage components, and the transverse partition is provided with a cooling component for cooling and isolating the devices in the two areas.

[0012] Optionally, the high-voltage components comprise a DC filter module, which comprises a copper bar base, a magnetic ring and a safety capacitor.

[0013] The magnetic ring and the safety capacitor are connected to the copper bar base, and the copper bar base is used to electrically connect the magnetic ring and the safety capacitor.

[0014] The magnetic ring and the safety capacitor are used to perform multi-stage filtering on the DC signal to output a filtered DC signal.

[0015] Optionally, the safety capacitor comprises an X safety capacitor and two groups of Y safety capacitors.

[0016] The X safety capacitor is arranged at one end of the copper bar base.

[0017] The first group of Y safety capacitors in the two groups of Y safety capacitors are arranged on both sides of the magnetic ring, and the second group of Y safety capacitors are arranged close to the X safety capacitor.

[0018] Optionally, the controller housing and the reducer housing are integrally formed.

[0019] Optionally, the high-voltage components comprise a three-phase output module, which comprises a three-phase output copper bar and a three-phase magnetic ring.

[0020] The three-phase magnetic ring surrounds the three-phase output copper bar outside to suppress interference of the three-phase output copper bar.

[0021] The three-phase magnetic ring and the three-phase output copper bar are fixed by adhesive.

[0022] Optionally, the gap between the three-phase magnetic ring and the three-phase output copper bar is less than a preset value.

[0023] The third aspect of the embodiment of the application provides a vehicle comprising the control board provided by the first aspect of the embodiment of the application or comprising the motor controller provided by the second aspect of the embodiment of the application.

[0024] The control board provided in the application can make the E-shift electronic decoupling circuit communicate with the inverter control circuit in the motor controller, without being arranged in the reducer outside the motor controller. First, the communication between the inverter control circuit and the E-shift electronic decoupling circuit can be realized on one control board, greatly reducing the communication path between the inverter control circuit and the E-shift electronic decoupling circuit, so that the E-shift electronic decoupling circuit can respond to the control signal of the inverter control circuit faster, and the problem of electromagnetic interference caused by a long transmission path can be reduced. Second, the internal space of the motor controller is fully utilized, and the space utilization rate of the motor controller is improved. Third, the material management of the related components of the inverter control circuit and the E-shift electronic decoupling circuit can be placed in the same material box, without having to separate the two material boxes to manage the related components of the inverter control circuit and the E-shift electronic decoupling circuit, which is convenient for users to manage materials. Fourth, since the E-shift electronic decoupling circuit does not have to be arranged on a separate control board in the reducer, but shares a control board with the integrated inverter control circuit, the production cost is lower, and the integration degree of the control board is higher. Fifth, since the use of a control board in the reducer is reduced, the weight of the reducer is also reduced. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the application. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0026] Figure 1 is an explosion schematic diagram of a motor controller according to an embodiment of the application;

[0027] Figure 2 is a structural schematic diagram of the motor controller during assembly according to an embodiment of the application;

[0028] Figure 3 is a structural schematic diagram of a control board according to an embodiment of the application;

[0029] Figure 4 is a structural schematic diagram of a DC filter module according to an embodiment of the application;

[0030] Figure 5 is a structural schematic diagram of a three-phase output module according to an embodiment of the application.

[0031] Explanation of reference signs: 1, controller housing; 2, transverse isolation piece; 3, low-voltage area; 31, control panel; 4, high-voltage area; 41, DC-LINK capacitor; 42, IGBT module; 43, three-phase output module; 431, three-phase output copper bar; 432, three-phase magnetic ring; 5, DC filter module; 51, copper bar base; 52, magnetic ring; 53, X safety capacitor; 54, Y safety capacitor; 6, current Hall sensor; 11, upper cover; 12, heat-conducting pad. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative labor fall within the protection scope of the present application.

[0033] Embodiment one

[0034] In the related art, when the inverter control circuit and the E-shift electronic disengagement circuit outside the motor controller need to communicate with each other, a connection line needs to be established between the inverter control circuit and the E-shift electronic disengagement circuit, so that the signal of the inverter control circuit can be transmitted to the E-shift electronic disengagement circuit through the connection line. However, due to the complex internal structure of the motor controller, a relatively long transmission path needs to be established between the inverter control circuit and the E-shift electronic disengagement circuit, thereby causing the E-shift electronic disengagement circuit to take a long time to receive the control signal of the inverter control circuit, and the E-shift electronic disengagement circuit cannot respond to the control signal of the inverter control circuit in time. At the same time, the relatively long signal transmission path is easily affected by the electromagnetic interference of external devices, so that the E-shift electronic disengagement circuit cannot accurately respond to the control signal of the inverter control circuit.

[0035] Therefore, the present application proposes a control panel, as shown in Figure 3 The inverter control circuit is used for converting direct current into alternating current, and the E-shift electronic disengagement circuit is used for controlling the disengagement and connection between the gear and the synchronizer in the speed reducer, so as to control the working state of the motor.

[0036] The E-Shift electronic disengagement circuit and the inverter control circuit are integrated on the same control board 31, which can be realized by the following setting mode: the E-Shift electronic disengagement circuit and the inverter control circuit share a low-voltage connector to interact with the external low-voltage power supply and signals through the low-voltage connector; and the two share a set of DC filter modules 5 on the control board 31, and the MCU chips (Microcontroller Unit) in the E-Shift electronic disengagement circuit and the inverter control circuit interact through wire joints.

[0037] By integrating the inverter control circuit and the E-shift electronic disengagement circuit through the control board 31, the E-shift electronic disengagement circuit can communicate with the inverter control circuit in the motor controller without being arranged in the reducer outside the motor controller. First, the communication path between the inverter control circuit and the E-shift electronic disengagement circuit is shortened, so that the E-shift electronic disengagement circuit can timely receive the signals output by the inverter control circuit, thereby responding to the signals output by the inverter control circuit in time and reducing the problem of electromagnetic interference caused by a long transmission path; second, the internal space of the motor controller is fully utilized, improving the space utilization rate of the motor controller; third, the material management of the related components of the inverter control circuit and the E-shift electronic disengagement circuit can be placed in the same material box, without having to separate the two into two material boxes for material management of the related components of the inverter control circuit and the E-shift electronic disengagement circuit, which is convenient for users to manage materials; fourth, since the E-shift electronic disengagement circuit does not need to be arranged on a separate control board 31 in the reducer, but shares a control board 31 with the integrated inverter control circuit, the production cost is lower and the integration degree of the control board 31 is higher; fifth, since the use of a control board 31 in the reducer is reduced, the weight of the reducer is also reduced.

[0038] Specifically, the vehicle includes four wheels, which are divided into a front wheel group and a rear wheel group, and the front wheel group and the rear wheel group can be controlled by two reducers respectively. The E-shift electronic disengagement circuit is a control circuit in the reducer, which is used to control the electronic disengagement mechanism, and then controls the disengagement and connection between the gear and the synchronizer in the reducer through the electronic disengagement mechanism, to indirectly control the working state of the motor.

[0039] For example, when the E-shift electronic disengagement circuit controls the disengagement and connection between the gear and the synchronizer in the reduction gear, the electronic disengagement mechanism on the vehicle can be operated. When the electronic disengagement mechanism operates the gear and the synchronizer in the reduction gear to disengage, the motor is not affected by the rotation of the front axle / rear axle of the vehicle and is in a free rotation state, at which time the vehicle is converted from four-wheel drive to two-wheel drive; when the electronic disengagement mechanism operates the gear and the synchronizer in the reduction gear to connect, the motor can drive the rotation of the front axle / rear axle of the vehicle and rotate with the rotation of the front axle, at which time the vehicle is converted from two-wheel drive to four-wheel drive.

[0040] In the structure of the embodiment of the present application, since the control board 31 can realize the mutual communication of the various components on the control board 31, the pins of the components in the inverter control circuit and the pins of the components in the E-shift electronic disengagement circuit can be welded on the control board 31, so that the inverter control circuit and the E-shift electronic disengagement circuit can communicate with each other through the corresponding welding points. The pins of the components in the inverter control circuit and the pins of the components in the E-shift electronic disengagement circuit can also be fixed on the control board 31 through the wire connection mode, so that the inverter control circuit and the E-shift electronic disengagement circuit can communicate with each other through the corresponding wires.

[0041] Embodiment Two

[0042] Based on the same inventive concept, another embodiment of the present application provides a motor controller, which is provided with a control board as provided in Embodiment One.

[0043] In the structure of the embodiment of the present application, since the E-shift electronic disengagement circuit occupies the space in the motor controller, in order to integrate the E-shift electronic disengagement circuit into the control board 31 without expanding the internal space of the motor controller, the following structures are designed.

[0044] The first structure: refer to Figure 1 and Figure 2 As shown, the motor controller comprises a controller housing 1; the controller housing 1 is provided with a transverse partition 2, which divides the space in the controller housing 1 into two high-voltage areas 4 for accommodating high-voltage components and a low-voltage area 3 for accommodating low-voltage components, and the transverse partition 2 is provided with a cooling component, which is used to cool and isolate the components in the two side areas. The cooling component can be a condenser or a cooling water pipe.

[0045] Specifically, the controller housing 1 can be divided into a low-voltage area 3 and a high-voltage area 4 by means of the transverse isolation piece 2. The low-voltage area 3 is used to accommodate low-voltage components such as the control board 31, while the high-voltage area 4 can be used to accommodate IGBT modules 42, three-phase output modules 43, DC-LINK capacitors 41, etc.

[0046] Traditionally, the components inside the controller housing are cooled by cooling water channels located at the bottom of the controller housing 1, and low-pressure and high-pressure components are isolated by shielding plates located inside the controller housing 1. However, since the cooling water channels and shielding plates are distributed in different locations inside the controller housing, they each occupy a large amount of space in the controller housing 1.

[0047] In this embodiment, the lateral isolator 2 serves several purposes. First, it allows the cooling water channel and the shielding plate to be combined to form the lateral isolator 2, significantly saving internal space in the controller housing 1 and enabling the E-shift electronic disconnection circuit to be integrated onto the control board 31. Second, it isolates the low-voltage and high-voltage components on both sides of the lateral isolator 2, preventing electromagnetic interference from the high-voltage components from being transmitted to the low-voltage components such as the inverter control circuit and the E-shift electronic disconnection circuit integrated onto the control board 31, thus simultaneously protecting the inverter control circuit and the E-shift electronic disconnection circuit on the control board 31. Third, it allows for cooling of the inverter control circuit and the E-shift electronic disconnection circuit on the control board 31, eliminating the need for additional cooling components in the reducer to cool the E-shift electronic disconnection circuit, thereby significantly reducing production costs.

[0048] Among them, reference Figure 1 As shown, a thermal pad 12 is provided between the lateral isolator 2 and the control board 31 to better transfer heat from the control board 31 to the lateral isolator 2, thereby improving the performance of the lateral isolator 2 and simultaneously cooling the E-shift electronic disconnect circuit and inverter control circuit on the control board 31. The thermal pad 12 can be made of thermal grease, thermal adhesive, etc.

[0049] Second structure: Reference Figure 4 As shown, the high-voltage component includes a DC filter module 5, which includes a copper busbar base 51, a magnetic ring 52, and a safety capacitor. The magnetic ring 52 and the safety capacitor are connected to the copper busbar base 51, and the copper busbar base 51 is used to electrically connect the magnetic ring 52 and the safety capacitor. The magnetic ring 52 and the safety capacitor are used to perform multi-stage filtering on the DC signal to suppress electromagnetic interference.

[0050] Specifically, refer to Figure 1 and Figure 4As shown, one end of the controller housing 1 is provided with an upper cover 11, and the other end of the controller housing 1 is welded with the reducer housing, and the control panel 31 and the DC filter module 5 are arranged below the upper cover 11, and the control panel 31 and the DC filter module 5 are arranged adjacent to each other.

[0051] The DC filter module 5 is arranged in the low-voltage area 3 and adjacent to the control panel 31. Since the DC filter module 5 is a high-voltage component, in order to avoid interference of the DC filter module 5 to the control panel 31, a shielding plate (not shown in the figure) is arranged between the DC filter module 5 and the control panel 31 to shield the electromagnetic interference on the DC filter module 5, so as to avoid the influence of the electromagnetic interference on the DC filter module 5 on the control panel 31.

[0052] Specifically, the DC filter module 5 is a filtering part of the entire motor controller, which is used to filter the electromagnetic interference on the three-phase output module 43 and the copper bus base 51, so as to filter the common-mode interference between the copper bus base 51 and the copper bus base 51 in the DC filter module 5, and the differential-mode interference between the copper bus base 51 and the controller housing 1.

[0053] In the conventional DC filter module 5, since each device in the DC filter module 5 is connected through wires, a plurality of wires also occupy most of the space in the controller housing 1.

[0054] Therefore, the copper bus base 51 is arranged in the DC filter module 5 in the embodiment of the present application.

[0055] Referring to Figure 4 As shown, the right side of the copper bus base 51 is the current input end of the copper bus base 51, and the left side is the current output end of the copper bus base 51. The copper bus base 51 can be made by injection molding process, and the copper bus base 51 is a conductor and can realize electrical connection between devices. The pins of the safety capacitor can be welded into the grooves of the copper bus base 51 by resistance welding, and the magnetic ring 52 can be fixed on the copper bus base 51 by potting glue. The electrical connection between the safety capacitor and the magnetic ring 52 can be realized through the copper bus base 51, that is, the electrical connection between the safety capacitor and the magnetic ring 52 and other devices in the DC filter module 5 can be realized.

[0056] Through the arrangement of the copper bus base 51, the magnetic ring 52 and other devices such as the safety capacitor can be integrated, so that these devices can be connected on the same copper bus base 51. First, the electrical connection between the devices does not need to be realized by connecting the devices through wires, which reduces the occupation of the space of the controller housing 1; second, when connecting the devices, only the devices need to be inserted into the grooves in the copper bus base 51, which simplifies the connection process and improves the assembly efficiency of the product; third, the wire harness design is reduced, and the labor cost and production cost are saved.

[0057] In the structure of the DC filter module 5, since the copper bus base 51 is used as a substrate for electrical connection between various devices, the electromagnetic interference on the copper bus base 51 and the three-phase output module 43 has a great impact on the low-voltage components of the control panel 31.

[0058] Therefore, in order to avoid the low-voltage components from being greatly affected by electromagnetic interference, the safety capacitor includes an X safety capacitor 53 and two groups of Y safety capacitors 54; the X safety capacitor 53 is arranged at one end of the copper bus base 51; the first group of Y safety capacitors 54 in the two groups of Y safety capacitors 54 is arranged on both sides of the magnetic ring 52, and the second group of Y safety capacitors 54 is arranged close to the X safety capacitor 53.

[0059] The electromagnetic interference on the copper bus base 51 passes through a group of Y safety capacitors 54, filters the interference between the copper bus base 51 and the transverse isolation 2 through the Y safety capacitors 54, is filtered by the magnetic ring 52 to filter the differential mode interference and common mode interference on the three-phase output module 43, and then passes through another group of Y safety capacitors 54 to filter the interference between the copper bus base 51 and the transverse isolation 2 again, and finally passes through the X safety capacitor 53 to filter the interference between the two copper buses in the copper bus base 51.

[0060] Through the above arrangement of the magnetic ring 52 and the safety capacitor, multi-stage filtering of the electromagnetic interference on the copper bus base 51 can be realized, thereby reducing the electromagnetic interference transmitted to the low-voltage components, and further reducing the EMC electromagnetic interference capability of the motor controller, wherein the EMC electromagnetic interference capability refers to the interference capability of the motor controller to interfere with other components in the surrounding environment.

[0061] The X safety capacitor 53 receives the direct current input into the copper bus base 51, and filters the EMI noise of the DC filter module 6 through the X safety capacitor 53 and the two groups of Y safety capacitors 54.

[0062] In the structure of the DC filter module 5, since the pins of the safety capacitor need to be grounded, the distance between the safety capacitor and the controller housing 1 is far, and an additional connecting line is needed to connect the pins of the safety capacitor to the controller housing 1 to realize grounding, which also occupies the space of the controller housing 1.

[0063] In order to avoid the connecting line from occupying the space of the controller housing 1, the safety capacitor of the embodiment of the application is provided with pins facing the transverse isolation 2.

[0064] The pins of the safety capacitor are in contact with the transverse isolator 2 via the copper busbar base 51. The transverse isolator 2 is part of the controller housing 1. Therefore, by setting the pins of the safety capacitor in the direction facing the transverse isolator 2, the pins can be grounded by taking advantage of the integral relationship between the transverse isolator 2 and the controller housing 1, without the need for additional connecting wires. This eliminates the need for connecting wires and reduces the space occupied by the controller housing 1.

[0065] The third structure: Reference Figure 5 As shown, the high-voltage component includes a three-phase output module 43, which comprises a three-phase output copper busbar 431 and a three-phase magnetic ring 432. The three-phase magnetic ring 432 is arranged around the three-phase output copper busbar 431 to shield it from interference. The three-phase magnetic ring 432 is fixed to the three-phase output copper busbar 431 with adhesive. The gap between the three-phase magnetic ring 432 and the three-phase output copper busbar 431 is less than a preset value.

[0066] Specifically, refer to Figure 1 As shown, the high-voltage component also includes an IGBT module 42, which is the conversion part of the entire motor controller. Under the control of the control board 31, the IGBT module can convert DC power into AC power and send it to the three-phase output module 43, which in turn sends the AC power to the motor. The low-voltage component also includes a drive board (not shown in the figure), which is also the core control part of the entire motor controller. It is used to input control signals to the IGBT module 42 to control the motor speed, direction, etc.

[0067] Reference Figure 1 As shown, the motor controller is also equipped with a current Hall sensor 6, which is used to detect the waveform changes of the DC-AC conversion by the IGBT module 42 to determine whether the converted waveform is normal.

[0068] The IGBT module 42 is positioned below the transverse isolator 2. The drive board is bolted to the bottom of the IGBT module 42, parallel to the IGBT module 42, with one side of the drive board flush with one side of the IGBT module 42. One end of the current Hall sensor 6 is connected to the side of the IGBT module 42 flush with the drive board, and the other end is connected to the three-phase output copper busbar 431. One end of the three-phase output copper busbar 431 is inserted into the end of the current Hall sensor 6 away from the IGBT module 42, and the three-phase output copper busbar 431 is connected to the current Hall sensor 6 by bolts. A three-phase magnetic ring 432 is arranged around the other end of the three-phase output copper busbar 431, and the three-phase magnetic ring 432 is bonded to the three-phase output copper busbar 431.

[0069] The electromagnetic interference on the IGBT module 4 is conducted to the motor through the three-phase output copper bars 431. By arranging the three-phase magnetic ring 432, the influence of the electromagnetic interference on the motor can be reduced.

[0070] Specifically, the gap between the three-phase magnetic ring 432 and the three-phase output copper bars 431 is less than a preset value.

[0071] The preset value can be 6mm, 7mm, 8mm, etc. By arranging the gap between the three-phase magnetic ring 432 and the three-phase copper bars to be less than the preset value, most of the magnetic induction lines on the three-phase copper bars can be wrapped by the three-phase magnetic ring 432, avoiding most of the magnetic induction lines from leaking to the positions of the low-voltage components such as the control board 31 and the drive board.

[0072] In addition, in the traditional three-phase output module 43, the three-phase magnetic ring 432 is connected to the end of the controller housing 1 to fix the three-phase magnetic ring 432 outside the three-phase output copper bars 431, and the three-phase magnetic ring 432 and the three-phase output copper bars 431 have no connection relationship, and are in a mutually independent state.

[0073] In the present application, in order to make the controller housing 1 of the motor controller integrally formed with the reducer housing, the three-phase magnetic ring 432 and the three-phase output copper bars 431 are connected by mutual adhesion, so that the three-phase output copper bars 431 form a whole. In this way, even if the end of the controller housing 1 in the embodiment of the present application is cancelled and the controller housing 1 is welded with the reducer housing, the three-phase magnetic ring 432 can still be connected outside the three-phase output copper bars 431.

[0074] By integrally forming the controller housing 1 and the reducer housing, the setting of the controller housing 1 and the reducer housing end cover can be reduced, thereby saving production costs. Moreover, due to the common housing of the two, the excess wire arrangement of the inverter control circuit and the E-shift electronic disengagement circuit caused by the arrangement position of the internal devices can be saved, thereby saving the space occupied by the excess wire arrangement.

[0075] In the above three structures, the internal space of the controller housing 1 can be greatly liberated, so that the E-shift electronic disengagement circuit can be arranged on the control board 31 and integrated with the inverter control circuit. Moreover, the E-shift electronic disengagement circuit integrated on the control board 31 can utilize the cooling function and isolation function of the transverse isolation member 2 in the motor controller to realize its own cooling and isolation, without the need for additional cooling components and isolation components, thereby greatly saving production costs.

[0076] Embodiment Three

[0077] Based on the same inventive concept, the embodiment of the application provides a vehicle comprising the control panel provided in the first embodiment of the application or comprising the motor controller provided in the second embodiment of the application.

[0078] It should be noted that each of the embodiments in the present specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same and similar parts between embodiments can be referred to each other.

[0079] It should also be noted that in this paper, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, relationship terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations, nor can it be understood as indicating or implying relative importance. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or terminal device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or terminal device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or terminal device including the element.

[0080] The above describes the technical solutions provided by the present application in detail, and the principles and implementation modes of the present application are described by applying specific examples. The above description of the embodiments is only to help understanding of the present application, and the content of the specification should not be understood as limiting the present application. Meanwhile, for those skilled in the art, according to the present application, there will be different forms of changes in specific implementation modes and application ranges, which do not need and cannot be exhaustively enumerated here, and the obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A control board, characterized by, The control board (31) is integrated with an inverter control circuit and an E-shift electronic disengagement circuit, the inverter control circuit is used for converting direct current into alternating current, and the E-shift electronic disengagement circuit is used for controlling disengagement and connection between gears and synchronizers in a reducer to control the working state of the motor; a low-voltage connector is shared between the E-shift electronic disengagement circuit and the inverter control circuit, and the low-voltage connector is used for external low-voltage power supply and signal interaction. The inverter control circuit and the E-shift electronic disengagement circuit communicate with each other through corresponding welding points.

2. An electric machine controller characterized by The motor controller is provided with the control board as claimed in claim 1. The motor controller comprises a controller housing (1). The controller housing (1) is provided with a transverse partition (2), which divides the space in the controller housing (1) into two areas for accommodating high-voltage components and low-voltage components, and the transverse partition (2) is provided with a cooling component for cooling and isolating devices in the two areas. A heat-conducting pad (12) is arranged between the transverse partition (2) and the control board, and the heat-conducting pad (12) is used for transferring heat on the control board to the transverse partition (2).

3. The motor controller of claim 2, wherein, The high-voltage components comprise a DC filter module (5), which comprises a copper bar base (51), a magnetic ring (52) and a safety capacitor. The magnetic ring (52) and the safety capacitor are connected to the copper bar base (51), and the copper bar base (51) is used for electrically connecting the magnetic ring (52) and the safety capacitor. The magnetic ring (52) and the safety capacitor are used for multi-stage filtering of direct current signals to output filtered direct current signals.

4. The motor controller of claim 3, wherein, The safety capacitor comprises an X safety capacitor (53) and two groups of Y safety capacitors (54). The X safety capacitor (53) is arranged at one end of the copper bar base (51). The first group of Y safety capacitors (54) in the two groups of Y safety capacitors (54) are arranged on both sides of the magnetic ring (52), and the second group of Y safety capacitors (54) are arranged close to the X safety capacitor (53).

5. The motor controller of claim 2, wherein, The controller housing (1) is integrally formed with a reducer housing.

6. The motor controller of claim 2, wherein, The high-voltage components comprise a three-phase output module (43), which comprises a three-phase output copper bar (431) and a three-phase magnetic ring (432). The three-phase magnetic ring (432) surrounds the three-phase output copper bar (431) to suppress interference of the three-phase output copper bar (431). The three-phase magnetic ring (432) and the three-phase output copper bar (431) are fixed by adhesive.

7. The motor controller of claim 6, wherein, The gap between the three-phase magnetic ring (432) and the three-phase output copper bar (431) is less than a preset value.

8. A vehicle characterized by comprising: The motor controller comprises the control board as claimed in any one of claims 1 or the motor controller as claimed in any one of claims 2 to 7.

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