Motor controller and electric vehicle

Abstract

The utility model is suitable for the technical field of controller equipment, and provides a motor controller and an electric vehicle, and the motor controller comprises a drive board, a capacitor board, a control board, a conductive column and a connecting assembly. A plurality of semiconductor switch elements for driving the motor are integrated on the driving board; a capacitor array formed by connecting a plurality of capacitors in series and parallel is integrated on the capacitor plate; the connecting assembly comprises a plurality of conductive columns and a plurality of connecting pieces, and the control board, the capacitor board and the driving board are sequentially stacked and arranged at intervals through the connecting pieces; the control board, the capacitor board and the driving board are electrically connected through conductive columns, and the first ends of the conductive columns are used for being electrically connected with an external circuit. Various components are integrated on the driving board, the capacitor board and the control board, the whole machine is highly integrated, easy to assemble and convenient to maintain, the driving board, the capacitor board and the control board are designed into an upper layer, a middle layer and a lower layer, the anti-interference performance is high, the electromagnetic compatibility is good, and the stability of the motor controller is guaranteed.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of controller devices, and particularly relates to a motor controller and an electric vehicle. BACKGROUND

[0002] Many existing electric vehicles are provided with motors, for example, some off-road vehicles are provided with motors, the motor is controlled to operate through a motor controller, a large number of MOS tubes, capacitors and other components are arranged in the motor controller, the components are scattered and distributed, and mutual interference exists during operation, so that the EMC (Electromagnetic Compatibility) of the motor controller is poor, the stability of the motor controller is poor, and the efficiency is low. CONTENT OF THE UTILITY MODEL

[0003] Embodiments of the application provide a motor controller, which aims to solve the problems of low efficiency and poor stability of the existing motor controller.

[0004] The embodiments of the application are implemented in the following manner, a motor controller is provided, which comprises a driving board, a capacitor board, a control board, a conductive column and a connecting assembly;

[0005] The driving board is integrated with a plurality of semiconductor switching elements for driving the motor;

[0006] The capacitor board is integrated with a capacitor array composed of a plurality of capacitors connected in series and in parallel;

[0007] The connecting assembly comprises a plurality of conductive columns and a plurality of connecting pieces, the control board, the capacitor board and the driving board are sequentially and spacedly arranged through the connecting pieces, the control board, the capacitor board and the driving board are electrically connected through the conductive columns, and the first end of the conductive column is used for electrically connecting with an external circuit.

[0008] Further, the connecting piece comprises a first horizontal strip and a first connecting column, the first horizontal strip is mounted on the driving board, a first mounting portion and a first connecting column are arranged on the side face of the first horizontal strip away from the driving board, the first mounting portion is used for connecting with the capacitor board, the free end of the first connecting column is used for connecting with the control board, in the first direction, the free end of the first connecting column is higher than the first mounting portion, and the first direction is the direction from the driving board to the first horizontal strip.

[0009] Further, the second end of the conductive column is provided with a second mounting portion, and the second mounting portion is used for connecting with the driving board.

[0010] Further, the second horizontal strip is further included, and the second end of the at least partial conductive column is connected with the second horizontal strip, the second horizontal strip is used for being mounted on the driving plate, and a third mounting part and a second connecting column are arranged on the side of the second horizontal strip away from the driving plate, the third mounting part is used for being connected with the capacitor plate, and the free end of the second connecting column is used for being connected with the control plate, and the free end of the second connecting column is higher than the third mounting part in the direction from the driving plate to the second horizontal strip.

[0011] Further, the first mounting part is provided with a through hole penetrating through the first mounting part, the through hole is divided into a first section hole and a second section hole along the first direction, the inner diameter of the first section hole is smaller than the inner diameter of the second section hole, and a screw sleeve is arranged in the second section hole.

[0012] Further, a steel column is further included, one end of the steel column is connected with the driving plate, and the other end of the steel column is connected with the control plate.

[0013] Further, a shell is further included, the shell includes a bottom shell and a top shell, the bottom shell and the top shell are combined to form an accommodation space, the driving plate, the capacitor plate, the control plate, the conductive column and the connecting assembly are arranged in the accommodation space, and the top shell is provided with a top hole for exposing the first end of the conductive column.

[0014] Further, a first sealing ring, a second sealing ring and a third sealing ring are further included, the first sealing ring is arranged between the bottom shell and the top shell, the second sealing ring and the third sealing ring are sleeved on the conductive column, and the second sealing ring and the third sealing ring are respectively located on the inner side and the outer side of the top hole and are in sealing cooperation with the top hole.

[0015] Further, the first end of the conductive column is provided with a mounting hole, and the mounting hole is used for being electrically connected with a terminal of an external circuit.

[0016] Further, an indicator lamp is further included, and the indicator lamp is arranged on the top shell and is used for indicating the working state of the motor controller.

[0017] In the second aspect, the application further provides an electric vehicle including the motor controller.

[0018] The motor controller provided by the application includes a driving plate, a capacitor plate, a control plate, a conductive column and a connecting assembly; the driving plate is integrated with a plurality of semiconductor switching elements used for driving a motor; the capacitor plate is integrated with a capacitor array composed of a plurality of capacitors in series and parallel connection; the connecting assembly includes a plurality of conductive columns and a plurality of connecting pieces, and the control plate, the capacitor plate and the driving plate are sequentially and spacedly arranged through the connecting pieces; the control plate, the capacitor plate and the driving plate are electrically connected through the conductive column, and the first end of the conductive column is used for being electrically connected with an external circuit. By integrating various components on the driving plate, the capacitor plate and the control plate, the whole machine is highly integrated, the assembly is simple, the maintenance is convenient, the driving plate, the capacitor plate and the control plate are designed in three layers from top to bottom, the anti-interference performance is strong, the electromagnetic compatibility is good, and the stability of the motor controller is ensured. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the motor controller provided in this application;

[0020] Figure 2 This is a top view schematic diagram of an embodiment of the motor controller provided in this application;

[0021] Figure 3 It is along Figure 2 Schematic diagram of the cross section of line AA;

[0022] Figure 4 This is a schematic diagram of the structure of the motor controller provided in this application with the top shell removed;

[0023] Figure 5 This is a schematic diagram showing the disassembled structure of one embodiment of the motor controller provided in this application;

[0024] Figure 6 It is along Figure 5 Enlarged schematic diagram of part B in the middle;

[0025] Figure 7 This is a schematic diagram of the conductive post and connector of an embodiment of the motor controller provided in this application;

[0026] Figure 8 This is a schematic diagram of the bottom shell of an embodiment of the motor controller provided in this application.

[0027] Explanation of reference numerals in the attached drawings: 100-Drive board, 200-Capacitor board, 300-Control board, 400-Conductive post, 410-Second mounting part, 430-Second horizontal bar, 431-Third mounting part, 432-Second connecting post, 500-Connector, 510-First horizontal bar, 511-First mounting part, 520-First connecting post, 600-Steel post, 700-Housing shell, 710-Bottom shell, 720-Top shell, 810-First sealing ring, 820-Second sealing ring, 830-Third sealing ring, 910-Indicator light, 920-Plug-in port. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. Examples of embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. Furthermore, it should be understood that the specific embodiments described herein are merely for explaining this application and are not intended to limit this application.

[0029] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "left", "right", "horizontal", "top", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of 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.

[0030] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0031] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include the direct contact of the first and second features, or the indirect contact of the first and second features through another feature between them. Moreover, the "upper", "above" and "on" of the first feature to the second feature includes the vertical direction of the first feature above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "under" and "under" of the first feature to the second feature includes the vertical direction of the first feature below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0033] The disclosure below provides many different embodiments or examples for implementing different structures of the application. For the purpose of simplification of the disclosure of the application, the components and settings of specific examples are described below. Of course, they are only examples and the purpose is not to limit the application. In addition, the application can repeatedly refer to numerical values and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, which does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the application provides examples of various specific processes and materials, but those of ordinary skill in the art can realize the application of other processes and / or the use of other materials.

[0034] The motor controller provided by the application comprises a driving board, a capacitor board, a control board, a conductive column and a connecting assembly; the driving board is integrated with a plurality of semiconductor switching elements for driving the motor; the capacitor board is integrated with a capacitor array composed of a plurality of capacitors in series and parallel connection; the connecting assembly comprises a plurality of conductive columns and a plurality of connecting pieces, the control board, the capacitor board and the driving board are sequentially and spacedly arranged by the connecting pieces; the control board, the capacitor board and the driving board are electrically connected by the conductive column, and the first end of the conductive column is used for electrically connecting with an external circuit. By integrating various components on the driving board, the capacitor board and the control board, the whole machine is highly integrated, easy to assemble and maintain, and the driving board, the capacitor board and the control board are designed as three layers from top to bottom, which has strong anti-interference and good electromagnetic compatibility, and ensures the stability of the motor controller.

[0035] As shown in Figures 1 to 8 An embodiment of the application provides a motor controller, comprising a driving board 100, a capacitor board 200, a control board 300, a conductive column 400 and a connecting assembly;

[0036] The driving board 100 is integrated with a plurality of semiconductor switching elements for driving the motor;

[0037] The capacitor board 200 is integrated with a capacitor array composed of a plurality of capacitors in series and parallel connection;

[0038] The connecting assembly comprises a plurality of conductive columns 400 and a plurality of connecting pieces 500, the control board 300, the capacitor board 200 and the driving board 100 are sequentially and spacedly arranged by the connecting pieces 500; the control board 300, the capacitor board 200 and the driving board 100 are electrically connected by the conductive column 400, and the first end of the conductive column 400 is used for electrically connecting with an external circuit (not shown in the figure).

[0039] In implementation, the driving board 100, the capacitor board 200 and the control board 300 are all PCB (Printed Circuit Board) boards, wherein the driving board 100 is integrated with a plurality of semiconductor switching elements, which are not limited to be triodes, MOS (Metal-Oxide-Semiconductor Field-Effect Transistor) tubes or IGBT (Insulate-Gate Bipolar Transistor) and the like.

[0040] The capacitor board 200 is integrated with a capacitor array composed of a plurality of capacitors in series and in parallel, and the control board 300 is integrated with resistors, capacitors, inductors and chips and the like. The electric signal for driving the motor to work can be output by cooperation of the control board 300, the capacitor board 200 and the driving board 100, which will not be described herein.

[0041] The control board 300, the capacitor board 200 and the driving board 100 are connected by the connecting piece 500, for example, one end of the connecting piece 500 is connected with the driving board 100, the middle of the connecting piece 500 is connected with the capacitor board 200, and the other end of the connecting piece 500 is connected with the control board 300, so that the control board 300, the capacitor board 200 and the driving board 100 are sequentially and spacedly arranged, which is simple to assemble and convenient to maintain. In addition, the control board 300, the capacitor board 200 and the driving board 100 are electrically connected by the conductive column 400, and the three-layer design has strong anti-interference and good electromagnetic compatibility.

[0042] The external circuit refers to other circuits or devices other than the motor controller, for example, the external circuit can be a motor, which is electrically connected with the motor controller provided by the application through the conductive column, and then controls the motor to work.

[0043] In some possible embodiments, the external circuit can also be a power supply, that is, the conductive column of the motor controller provided by the application can be electrically connected with the positive and negative poles of the power supply, and the motor controller is powered by the power supply.

[0044] It should be noted that the above external circuit being a motor or a power supply is an example of the embodiments of the application, and is not a specific limitation of the application. In other embodiments, the external circuit can also be other circuits or devices, for example, the conductive column of the motor controller can be grounded.

[0045] Exemplarily, the motor controller provided by the application is provided with a plurality of conductive columns, which can be individually output to realize specific functions, for example, the conductive column outputs the PUMP function, or the conductive columns are combined to realize specific functions, for example, the conductive columns can be divided into U1 and U2 combination, V1 and V2 combination, W1 and W2 combination or BAT positive and negative combination, etc., as shown in Figure 1 and Figure 2 not limited.

[0046] The motor controller provided by the application comprises a driving plate 100, a capacitor plate 200, a control plate 300, a conductive column 400 and a connecting assembly; the driving plate 100 is integrated with a plurality of semiconductor switching elements for driving the motor; the capacitor plate 200 is integrated with a capacitor array composed of a plurality of capacitors in series and parallel connection; the connecting assembly comprises a plurality of conductive columns 400 and a plurality of connecting pieces 500, the control plate 300, the capacitor plate 200 and the driving plate 100 are sequentially and spacedly arranged by the connecting pieces 500; the control plate 300, the capacitor plate 200 and the driving plate 100 are electrically connected by the conductive column 400, and the first end of the conductive column 400 is used for electrically connecting with an external circuit. By integrating various components on the driving plate 100, the capacitor plate 200 and the control plate 300, the whole machine is highly integrated, simple to assemble, easy to maintain, and the driving plate 100, the capacitor plate 200 and the control plate 300 are designed as three layers from top to bottom, which has strong anti-interference performance, good electromagnetic compatibility and ensures the stability of the motor controller.

[0047] Further, the connecting piece 500 comprises a first horizontal bar 510 and a first connecting column 520, the first horizontal bar 510 is installed on the driving plate 100, the side of the first horizontal bar 510 away from the driving plate 100 is provided with a first mounting portion 511 and a first connecting column 520, the first mounting portion 511 is used for connecting with the capacitor plate 200, the free end of the first connecting column 520 is used for connecting with the control plate 300, in the first direction, the free end of the first connecting column 520 is higher than the first mounting portion 511, and the first direction is from the driving plate 100 to the first horizontal bar 510.

[0048] The first horizontal bar 510 is mounted on the driving plate 100 by screws, the first mounting portion 511 and the first connecting column 520 are arranged on the side of the first horizontal bar 510 away from the driving plate 100, and the height of the first connecting column 520 is higher than that of the first mounting portion 511, in other words, in the first direction, the side of the first horizontal bar 510 close to the driving plate 100, the first mounting portion 511 and the free end of the first connecting column 520 are arranged in sequence. For example, the driving plate 100 is horizontally placed, the first direction is perpendicular to the horizontal plane and upward, and the side of the first horizontal bar 510 close to the driving plate 100, the first mounting portion 511 and the free end of the first connecting column 520 are arranged in sequence from bottom to top, so that the driving plate 100, the capacitor plate 200 and the control plate 300 are sequentially and spaced arranged from bottom to top.

[0049] In some embodiments, the first horizontal bar 510, the first mounting portion 511 and the free end of the first connecting column 520 are provided with mounting holes, wherein the mounting holes of the first horizontal bar 510 and the first mounting portion 511 can be perforations or threaded holes, the mounting hole of the free end of the first connecting column 520 is a threaded hole, and the connection and installation of the circuit boards and the connecting piece 500 are realized by cooperation of screws and mounting holes. For example, the mounting holes of the first horizontal bar 510 and the first mounting portion 511 are perforations, the screws are screwed with the driving plate 100 through the mounting holes on the first horizontal bar 510 to realize the installation and connection of the first horizontal bar 510 and the driving plate 100, then the capacitor plate 200 is connected to the first mounting portion 511 through the mounting holes of the first mounting portion 511, and finally the control plate 300 and the free end of the first connecting column 520 are installed and connected by cooperation of the screws and the mounting holes of the free end of the first connecting column 520.

[0050] Further, the second end of the conductive column 400 is provided with a second mounting portion 410, and the second mounting portion 410 is used for connecting with the driving plate 100. In implementation, the structure of the second mounting portion 410 can refer to the structure of the first mounting portion 511 described above, and the installation and electrical connection of the driving plate 100 and the conductive column 400 can be realized, which will not be described herein.

[0051] Further, the motor controller provided by the application further comprises a second horizontal bar 430, at least part of the second end of the conductive column 400 is connected with the second horizontal bar 430, the second horizontal bar 430 is used for being mounted on the driving plate 100, the side of the second horizontal bar 430 away from the driving plate 100 is provided with a third mounting portion 431 and a second connecting column 432, the third mounting portion 431 is used for connecting with the capacitor plate 200, and the free end of the second connecting column 432 is used for connecting with the control plate 300, in the direction from the driving plate 100 to the second horizontal bar 430, the free end of the second connecting column 432 is higher than the third mounting portion 431.

[0052] In implementation, the structure and implementation principle of the second horizontal strip 430, the third mounting portion 431 and the second connecting column 432 can refer to the structure and implementation principle of the first horizontal strip 510, the first mounting portion 511 and the first connecting column 520 described above, and will not be repeated here. By setting the second horizontal strip 430 to cooperate with the first horizontal strip 510 to support the capacitor plate 200 and the control plate 300, the structure is more stable and reliable.

[0053] In some embodiments, the first mounting portion 511 is provided with a through hole penetrating the first mounting portion 511, the through hole is divided into a first section hole and a second section hole along the first direction, the inner diameter of the first section hole is smaller than the inner diameter of the second section hole, and a screw sleeve is arranged in the second section hole.

[0054] Through the above setting, the first section hole is used for the screw rod of the screw to pass through, and the second section hole is used for accommodating the screw head of the screw, the diameter of the screw head is greater than the inner diameter of the first section hole, and the first horizontal strip 510 can be fixed on the driving plate 100 through the screw, and at the same time, the screw sleeve is arranged in the second section hole to protect the screw, which can effectively prolong the service life of the product.

[0055] As a possible implementation, the through hole provided on the first horizontal strip 510 and the second horizontal strip 430 can refer to the through hole of the first mounting portion 511 described above, and will not be repeated here.

[0056] In some possible embodiments, the motor controller provided by the present application further comprises a steel column 600, one end of the steel column 600 is connected with the driving plate 100, and the other end of the steel column 600 is connected with the control plate 300. In implementation, threaded holes are arranged at both ends of the steel column 600, and the driving plate 100 and the control plate 300 can be respectively fixed at both ends of the steel column 600 through screws, so that the connection is more reliable.

[0057] Optionally, the motor controller provided by the present application further comprises a shell 700, the shell 700 comprises a bottom shell 710 and a top shell 720, the bottom shell 710 and the top shell 720 are combined to form an accommodation space, the driving plate 100, the capacitor plate 200, the control plate 300, the conductive column 400 and the connecting assembly are arranged in the accommodation space, and the top shell 720 is provided with a top hole for exposing the first end of the conductive column 400;

[0058] The driving plate 100, the capacitor plate 200, the control plate 300, the conductive column 400 and the connecting assembly are protected by the shell 700, so as to realize the functions of waterproofing, dustproofing and the like. At the same time, the top shell 720 is provided with a top hole, and the first end of the conductive column 400 can be exposed from the top hole to be connected with the connecting terminal of the external circuit or the external equipment.

[0059] Further, the motor controller provided by the application further comprises a first sealing ring 810, a second sealing ring 820 and a third sealing ring 830, the first sealing ring 810 is arranged between the bottom shell 710 and the top shell 720, the second sealing ring 820 and the third sealing ring 830 are sleeved on the conductive column 400, and the second sealing ring 820 and the third sealing ring 830 are respectively located on the inner side and the outer side of the top hole and are in sealing cooperation with the top hole.

[0060] The sealing function between the bottom shell 710 and the top shell 720 is realized through the first sealing ring 810, and the sealing function of the top hole is realized through the second sealing ring 820 and the third sealing ring 830, and the protection level can reach IP6X through experiments, and the protection effect is good.

[0061] Further, the first end of the conductive column 400 is provided with a mounting hole, and the mounting hole is used for electrically connecting with a wiring terminal of an external circuit.

[0062] Optionally, the mounting hole can be a threaded hole, and the wiring terminal of the external circuit is a threaded connector, and the electric connection between the conductive column and the wiring terminal is realized through the threaded cooperation between the threaded connector and the threaded hole.

[0063] Optionally, the mounting hole can also be a plug hole, and the wiring terminal of the external circuit is a plug connector, and the electric connection between the conductive column and the wiring terminal is realized through the plug cooperation between the plug connector and the plug hole.

[0064] By setting the first end of the conductive column 400 as a mounting hole structure, the wiring terminal of the external circuit is matched with the mounting hole, the electric connection between the motor controller and the external circuit is realized, and the connection is convenient and reliable.

[0065] Further, the motor controller provided by the application further comprises an indicator lamp 910, the indicator lamp 910 is arranged on the top shell 720 and is connected with the control panel 300, and is used for indicating the working state of the motor controller, so that the user can intuitively obtain the working state information of the motor controller.

[0066] Optionally, the indicator lamp 910 can adopt LED lamps of different positions or different colors, and in other embodiments, the indicator lamp 910 can also adopt a display screen, which can be used to indicate the working state of the motor controller, and is not limited.

[0067] As a possible implementation manner, the motor controller provided by the application further comprises a plug port 920, a plurality of pins are arranged in the plug port 920, the pins are used for electrically connecting with plug connectors of an external circuit, and electric and signal transmission is realized.

[0068] In a second aspect, the application further provides an electric vehicle comprising the motor controller as described above.

[0069] In the implementation, the electric vehicle is a non-road electric vehicle, for example, an indoor electric vehicle or a special-purpose electric vehicle, without specific limitation.

[0070] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the structure and implementation principle of the electric vehicle described above can refer to the corresponding structure and implementation principle in the foregoing embodiments, which will not be repeated here.

[0071] The motor controller provided in the application comprises a driving plate 100, a capacitor plate 200, a control plate 300, a conductive column 400 and a connecting assembly; the driving plate 100 is integrated with a plurality of semiconductor switching elements for driving the motor; the capacitor plate 200 is integrated with a capacitor array composed of a plurality of capacitors in series and parallel connection; the connecting assembly comprises a plurality of conductive columns 400 and a plurality of connecting pieces 500, and the control plate 300, the capacitor plate 200 and the driving plate 100 are sequentially and spacedly arranged by the connecting pieces 500; the control plate 300, the capacitor plate 200 and the driving plate 100 are electrically connected by the conductive column 400, and the first end of the conductive column 400 is used for electrically connecting with an external circuit. By integrating various components on the driving plate 100, the capacitor plate 200 and the control plate 300, the whole machine is highly integrated, simple to assemble, easy to maintain, and the driving plate 100, the capacitor plate 200 and the control plate 300 are designed as three layers from top to bottom, which has strong anti-interference performance and good electromagnetic compatibility, thereby ensuring the stability of the motor controller.

[0072] The above is only a preferred embodiment of the application, and is not used to limit the application, and any modification, equivalent replacement and improvement made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. An electric motor controller characterized by, The motor controller comprises a driving plate, a capacitor plate, a control plate, a conductive column and a connecting assembly; The driving plate is integrated with a plurality of semiconductor switching elements for driving the motor; The capacitor plate is integrated with a capacitor array composed of a plurality of capacitors in series and parallel connection; The connecting assembly comprises a plurality of conductive columns and a plurality of connecting pieces, the control plate, the capacitor plate and the driving plate are sequentially and spacedly arranged through the connecting pieces, the control plate, the capacitor plate and the driving plate are electrically connected through the conductive columns, and the first end of the conductive column is used for electrical connection with an external circuit.

2. The motor controller of claim 1, wherein, The connecting piece comprises a first horizontal strip and a first connecting column, the first horizontal strip is mounted on the driving plate, a first mounting portion and the first connecting column are arranged on the side of the first horizontal strip away from the driving plate, the first mounting portion is used for connecting with the capacitor plate, and the free end of the first connecting column is used for connecting with the control plate, in a first direction, the free end of the first connecting column is higher than the first mounting portion, and the first direction is from the driving plate to the first horizontal strip.

3. The motor controller of claim 1, wherein, The second end of the conductive column is provided with a second mounting portion, and the second mounting portion is used for connecting with the driving plate.

4. The motor controller of claim 1, wherein, Further comprising a second horizontal strip, the second end of at least part of the conductive column is connected with the second horizontal strip, the second horizontal strip is used for mounting on the driving plate, a third mounting portion and a second connecting column are arranged on the side of the second horizontal strip away from the driving plate, the third mounting portion is used for connecting with the capacitor plate, and the free end of the second connecting column is used for connecting with the control plate, in the direction from the driving plate to the second horizontal strip, the free end of the second connecting column is higher than the third mounting portion.

5. The motor controller of claim 2, wherein, The first mounting portion is provided with a through hole penetrating the first mounting portion, the through hole is divided into a first section hole and a second section hole along the first direction, the inner diameter of the first section hole is smaller than that of the second section hole, and a screw sleeve is arranged in the second section hole.

6. The motor controller of claim 1, wherein, Further comprising a steel column, one end of the steel column is connected with the driving plate, and the other end of the steel column is connected with the control plate.

7. The motor controller of any one of claims 1 to 6, wherein, Further comprising a shell, the shell comprises a bottom shell and a top shell, the bottom shell and the top shell enclose a containing space, the driving plate, the capacitor plate, the control plate, the conductive column and the connecting assembly are arranged in the containing space, and the top shell is provided with a top hole for exposing the first end of the conductive column.

8. The motor controller of claim 7, wherein, Further comprising a first sealing ring, a second sealing ring and a third sealing ring, the first sealing ring is arranged between the bottom shell and the top shell, the second sealing ring and the third sealing ring are sleeved on the conductive column, and the second sealing ring and the third sealing ring are respectively located on the inner side and the outer side of the top hole and are in sealing cooperation with the top hole.

9. The motor controller of claim 1, wherein, The first end of the conductive column is provided with a mounting hole for electrical connection with a terminal of an external circuit.

10. The motor controller of claim 7, wherein, Further comprising an indicator light arranged on the top shell for indicating the working state of the motor controller.

11. An electric vehicle, characterized by The motor controller comprises a driving plate, a capacitor plate, a control plate, a conductive column and a connecting assembly;

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