Motor controller and vehicle with same

Abstract

The utility model provides a motor controller and a vehicle with the same, and the motor controller comprises a control circuit board which is integrated with a control assembly; a driving circuit board; one of the control circuit board and the driving circuit board is provided with a conductive pin, and the other one of the control circuit board and the driving circuit board is provided with a conductive connecting hole; wherein the conductive contact pin comprises a contact pin main body and a radiating fin arranged on the contact pin main body, one end of the radiating fin is connected with the contact pin main body, one end of the radiating fin extends outwards along the radial direction of the contact pin main body, one end of the contact pin main body, which faces the conductive connecting hole, is a plugging end, and the radiating fin is arranged at the end part, which is opposite to the plugging end, of the contact pin main body.

Description

Technical Field

[0001] The utility model relates to the technical field of motor controller connection design, and in particular, to a motor controller and a vehicle having the same. Background Art

[0002] At present, the low-voltage connection method inside the motor controllers of new energy vehicles at home and abroad all adopts low-voltage ribbon cables with connectors. In this connection method, there are potential hazards in the reliability of the connectors. That is, as the running time of the vehicle increases, the connectors may have faults such as poor contact due to vibration or aging, which may further cause the failure of the motor controller. After the connectors operate for a long time, their working performance will also be affected by poor heat dissipation. Summary of the Utility Model

[0003] The main purpose of the present utility model is to provide a motor controller and a vehicle having the same, so as to solve the problem of poor heat dissipation of the connectors of the motor controller in the prior art.

[0004] To achieve the above object, according to one aspect of the present utility model, there is provided a motor controller, including: a control circuit board on which a control component is integrated, and the control component is used to execute a program built in the control component to generate a control instruction; a drive circuit board on which at least one power electronic device is provided, and the drive circuit board is used to receive the control instruction and convert the control instruction into a power drive signal for the motor; a conductive pin is provided on one of the control circuit board and the drive circuit board, and a conductive connection hole is provided on the other of the control circuit board and the drive circuit board. When some of the conductive pins are installed in the conductive connection holes, the control circuit board and the drive circuit board are electrically connected; wherein, the conductive pin includes a pin body and a heat sink provided on the pin body, one end of the heat sink is connected to the pin body, one end of the heat sink extends radially outward along the pin body, the end of the pin body facing the conductive connection hole is a plug end, and the heat sink is provided on the end of the pin body opposite to the plug end.

[0005] Further, the conductive pins are provided on the drive circuit board, and the conductive connection holes are provided on the control circuit board.

[0006] Further, there are a plurality of conductive pins, and the plurality of conductive pins are arranged in an array on the drive circuit board. There are a plurality of conductive connection holes, and the plurality of conductive connection holes are arranged in an array on the control circuit board. The plurality of conductive connection holes are arranged in one-to-one correspondence with the plurality of conductive pins.

[0007] Further, two heat sinks are provided on each pin body, and the two heat sinks are symmetrically arranged about the central axis of the pin body. Among them, on the drive circuit board, the extending directions of the heat sinks on each conductive pin are the same, so that the heat sinks on the conductive pins in adjacent rows jointly form a cooling flow channel for air circulation.

[0008] Further, a plurality of heat sinks are provided on each pin body, and the plurality of heat sinks are arranged at intervals along the circumferential direction of the pin body.

[0009] Further, thermal grease is provided at the connection between the conductive pin and the drive circuit board.

[0010] Further, the length of the pin body is greater than the depth of the conductive connection hole.

[0011] Further, an elastic portion is provided at the pin end of the pin body. When the conductive pin is installed in the conductive connection hole, the elastic portion abuts against the bottom of the conductive connection hole, and the elastic portion is used to absorb the vibration between the conductive pin and the conductive connection hole when the motor controller receives an impact load.

[0012] Further, the conductive pin is made of copper material.

[0013] According to another aspect of the present invention, a vehicle is provided, including a motor controller, and the motor controller is the above-mentioned motor controller.

[0014] Applying the technical solution of the present invention, by providing a conductive pin on one of the control circuit board and the drive circuit board, and a conductive connection hole on the other of the control circuit board and the drive circuit board, the existing low-voltage cable design is cancelled, saving the cost of connectors and wire harnesses. At the same time, by providing heat sinks, the heat dissipation effect of the connector is improved. This application solves the problem of poor heat dissipation of the connector of the motor controller in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0016] Figure 1 The structural schematic diagram of the first embodiment of the motor controller according to the present invention is shown;

[0017] Figure 2 The structural schematic diagram of the second embodiment of the motor controller according to the present invention is shown;

[0018] Figure 3 The structural schematic diagram of the third embodiment of the motor controller according to the present invention is shown.

[0019] Among them, the above-mentioned drawings include the following reference numerals:

[0020] 1. Control circuit board;

[0021] 2. Drive circuit board;

[0022] 3. Conductive pin

[0023] 4. Conductive connection hole

[0024] 5. Pin body

[0025] 6. Heat sink

[0026] 7. Elastic part Detailed implementation manners

[0027] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will describe the present utility model in detail with reference to the drawings and in combination with the embodiments.

[0028] It should be noted that the terms used herein are only for describing the specific implementation manners and are not intended to limit the exemplary embodiments according to this application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0029] It should be noted that the terms "first", "second", etc. in the description and claims of this application and the above-mentioned drawings are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances so that the embodiments of this application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to those clearly listed steps or units, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0030] Now, the exemplary embodiments according to this application will be described in more detail with reference to the drawings. However, these exemplary embodiments can be implemented in many different forms and should not be construed as being limited only to the embodiments described herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and the concepts of these exemplary embodiments are fully conveyed to those of ordinary skill in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and thus their descriptions will be omitted.

[0031] The connection of a low-voltage ribbon cable with a connector is a common electrical connection method, widely used in electronic devices and systems for transmitting electrical signals or electrical energy. The following is an introduction to the connection of a low-voltage ribbon cable with a connector:

[0032] Structural composition: Ribbon cable: A ribbon cable is a cable composed of multiple wires arranged side by side, usually wrapped with insulating material on the outside.

[0033] Connector: A connector is a device used to connect electrical equipment and components, which can achieve electrical connection quickly and conveniently.

[0034] Contact pin: A contact pin is a conductive component inside the connector, which is connected to the wires on the ribbon cable.

[0035] Insulator: An insulator is the non-conductive part in the connector and the ribbon cable, used to isolate different wires and prevent short circuits.

[0036] Terminal: A terminal is a component that connects the wire and the contact pin, which can be welded or crimped.

[0037] In this connection method, there are potential hazards in the reliability of the connector. That is, as the running time of the vehicle increases, the connector may have faults such as poor contact due to vibration or aging, which may further cause the motor controller to fail. At the same time, it has the defect of inconvenient heat dissipation.

[0038] A motor controller is a device used to control the operation of an electric motor. It can be a hardware device or a software system containing control algorithms. The main function of the motor controller is to accurately control the speed, position, acceleration, and torque of the electric motor to meet the requirements of specific applications. The following are some key features and functions of the motor controller:

[0039] Hardware composition: Power electronic devices: including transistors, MOSFETs, IGBTs, etc., used to control the switching of current and regulation.

[0040] Driver circuit: Drives the power electronic devices and provides the required voltage and current.

[0041] Control unit: Usually contains a microcontroller (MCU) or a digital signal processor (DSP), which executes control algorithms.

[0042] Sensor interface: Connects various sensors, such as encoders, temperature sensors, current sensors, etc.

[0043] Communication interface: Such as CAN, SPI, I2C, Ethernet, etc., used to communicate with other systems or devices.

[0044] Protection circuit: It includes protection mechanisms such as overcurrent, overvoltage, and overheating to ensure the safe operation of the system.

[0045] In a motor controller, electrical connection devices are required at the positions where signal lines connecting the microcontroller or control unit to the motor drive circuit, lines connecting sensors such as encoders, position sensors, and temperature sensors to the control unit, and connections between the motor controller and auxiliary devices such as cooling fans and indicator lights. The existing electrical connection devices of motor controllers have the defects of high cost and inconvenient heat dissipation.

[0046] Combined with Figures 1 to 3 As shown, according to a specific embodiment of the present application, a motor controller is provided, including: a control circuit board 1 on which a control component is integrated, and the control component is used to execute a program built in the control component to generate control instructions; a drive circuit board 2 on which at least one power electronic device is provided, and the drive circuit board 2 is used to receive the control instructions and convert the control instructions into power drive signals for the motor; a conductive pin 3 is provided on one of the control circuit board 1 and the drive circuit board 2, and a conductive connection hole 4 is provided on the other of the control circuit board 1 and the drive circuit board 2. When a part of the conductive pin 3 is installed in the conductive connection hole 4, the control circuit board 1 and the drive circuit board 2 are electrically connected; wherein, the conductive pin 3 includes a pin body 5 and a heat sink 6 provided on the pin body 5. One end of the heat sink 6 is connected to the pin body 5, and one end of the heat sink 6 extends radially outward along the pin body 5. The end of the pin body 5 facing the conductive connection hole 4 is a plug-in end, and the heat sink 6 is provided on the end of the pin body 5 opposite to the plug-in end.

[0047] Applying the technical solution of the present application, by providing a conductive pin 3 on one of the control circuit board 1 and the drive circuit board 2, and a conductive connection hole 4 on the other of the control circuit board 1 and the drive circuit board 2, the existing low-voltage cable harness design is cancelled, saving the cost of connectors and wire harnesses. At the same time, by providing the heat sink 6, the heat dissipation effect of the connector is improved. The present application solves the problem of poor heat dissipation of the connector of the motor controller in the prior art.

[0048] Applying the low-voltage copper pin connection method of the present application, using copper pins instead of wire harnesses for low-voltage connections, its reliability and lifespan are not much different from those of low-voltage cable harness connections with connectors, and the cost of connectors and wire harnesses can be saved.

[0049] The connector is used for low-voltage connection between boards. An interface for inserting copper pins should be designed on another board. After connection, the connected PCB board and the motor controller housing are fixed with long bolts, so as to ensure the reliability of the low-voltage copper pin connection.

[0050] Furthermore, the conductive pins 3 are arranged on the driving circuit board 2, and the conductive connection holes 4 are arranged on the control circuit board 1.

[0051] Optionally, the conductive pins 3 are arranged on the control circuit board 1, and the conductive connection holes 4 are arranged on the driving circuit board 2.

[0052] Furthermore, there are multiple conductive pins 3, and the multiple conductive pins 3 are arranged in an array on the driving circuit board 2. There are multiple conductive connection holes 4, and the multiple conductive connection holes 4 are arranged in an array on the control circuit board 1. The multiple conductive connection holes 4 are arranged in one-to-one correspondence with the multiple conductive pins 3.

[0053] The array arrangement allows for more connection points to be achieved within a limited space, increasing the wiring density of the circuit board. At the same time, it simplifies the assembly process and is also more convenient when maintenance or component replacement is required.

[0054] The one-to-one arrangement of the multiple conductive connection holes 4 and the multiple conductive pins 3 can ensure the accuracy of each connection point and reduce the possibility of poor contact.

[0055] The arrangement of the multiple conductive pins 3 in an array on the driving circuit board 2 helps to simplify the wiring path, reduce complex wiring, thereby reducing signal interference and improving signal transmission quality, reducing the influence of parasitic capacitance and inductance, and improving circuit performance.

[0056] Compared with the low-voltage flexible cable design, the arrayed pins and connection holes help to better distribute heat and improve thermal management.

[0057] Furthermore, two heat sinks 6 are arranged on each pin body 5, and the two heat sinks 6 are symmetrically arranged about the central axis of the pin body 5. Among them, on the driving circuit board 2, the extending directions of the heat sinks 6 on each conductive pin 3 are the same, so that the heat sinks 6 on the conductive pins 3 in adjacent rows jointly form a cooling channel for air circulation.

[0058] The heat sink 6 can conduct out the heat of the conductive pin 3.

[0059] The cooling channel can effectively promote air circulation, improve the heat dissipation efficiency, and reduce the overheating problem that may occur under long-term operation or high-load conditions. In addition, through the jointly formed cooling channel, the thermal management can be optimized to ensure the stable operation and long-term reliability of the circuit board, and it also helps to improve the performance and service life of the electronic device.

[0060] Furthermore, multiple heat sinks 6 are arranged on each pin body 5, and the multiple heat sinks 6 are arranged at intervals along the circumferential direction of the pin body 5. By arranging multiple heat sinks, the heat dissipation effect can be further improved.

[0061] Optionally, a plurality of heat sinks 6 are symmetrically arranged in the circumferential direction of the pin body 5 along the axis of the pin body 5.

[0062] Furthermore, a thermal grease is provided at the connection between the conductive pin 3 and the drive circuit board 2. The thermal grease can enhance the heat conduction effect. Thermal grease, also known as thermal paste or thermal interface material (TIM), is a material used to fill the tiny gaps between electronic components and heat sinks.

[0063] Thermal grease contains fillers with high thermal conductivity, such as alumina, boron nitride, or silver, etc., to improve the heat conduction ability of the material.

[0064] Thermal grease has good electrical insulation performance to prevent electrical short circuits.

[0065] Thermal grease remains stable in performance within a wide temperature range and is not easily decomposed or melted.

[0066] Thermal grease has a certain flexibility and can adapt to contact surfaces of different shapes.

[0067] Thermal grease can fill the tiny gaps between contact surfaces and provide a more compact heat conduction path.

[0068] Thermal grease reduces the thermal resistance by filling the air gaps, improves the heat transfer efficiency from the heat source to the heat sink. By evenly dispersing heat, it reduces the formation of local hot spots. By effectively dissipating heat, it extends the service life of the pins. Thermal grease is easy to apply and remove, facilitating the installation and replacement of heat sinks or heat fins.

[0069] Furthermore, the length of the pin body 5 is greater than the hole depth of the conductive connection hole 4.

[0070] Furthermore, an elastic part 7 is provided at the pin end of the pin body 5. When the conductive pin 3 is installed in the conductive connection hole 4, the elastic part 7 abuts against the bottom of the conductive connection hole 4. The elastic part 7 is used to absorb the vibration between the conductive pin 3 and the conductive connection hole 4 when the motor controller receives an impact load.

[0071] Furthermore, the conductive pin 3 is made of copper material.

[0072] The elastic part 7 can absorb the vibration generated by external impacts or during motor operation, reducing damage to the connection.

[0073] The elastic part 7 provides additional support to ensure that the conductive pin 3 remains stable in the connection hole and prevents connection loosening caused by vibration.

[0074] The design of the elastic part 7 can improve the mechanical strength of the pin, making it more capable of withstanding mechanical shocks, reducing electrical connection failures caused by vibrations, protecting the internal circuit of the motor controller from damage, and extending the service life of the motor controller and its connection components by reducing wear and fatigue at the connection points.

[0075] The elastic part 7 may help maintain the stability of the contact during thermal cycling, preventing connection problems caused by temperature changes.

[0076] The elastic part 7 can reduce the noise generated at the connection due to vibrations.

[0077] According to another aspect of the present utility model, a vehicle is provided, including a motor controller, and the motor controller is the above-mentioned motor controller.

[0078] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. can be used here to describe the spatial positional relationship between one device or feature and other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures for the device. For example, if the device in the drawing is inverted, the device described as "above" or "over" other devices or structures will then be positioned "below" or "beneath" other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations are made for the spatial relative descriptions used here.

[0079] In addition to the above, it should also be noted that the "one embodiment", "another embodiment", "embodiment" etc. mentioned in this specification refer to the specific features, structures or characteristics described in connection with that embodiment being included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in connection with any one embodiment, it is intended that the implementation of such feature, structure or characteristic in combination with other embodiments also falls within the scope of the present utility model.

[0080] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0081] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A motor controller, characterized in that, Comprising: A control circuit board (1) integrated with a control component thereon, and the control component is used to execute a program built in the control component to generate a control instruction; A drive circuit board (2) provided with at least one power electronic device thereon, and the drive circuit board (2) is used to receive the control instruction and convert the control instruction into a power drive signal for the motor; A conductive pin (3) is provided on one of the control circuit board (1) and the drive circuit board (2), and a conductive connection hole (4) is provided on the other of the control circuit board (1) and the drive circuit board (2). When part of the conductive pins (3) are installed in the conductive connection holes (4), the control circuit board (1) is electrically connected to the drive circuit board (2); Wherein, the conductive pin (3) includes a pin body (5) and a heat sink (6) provided on the pin body (5). One end of the heat sink (6) is connected to the pin body (5), and one end of the heat sink (6) extends radially outward along the pin body (5). The end of the pin body (5) facing the conductive connection hole (4) is a plug-in end, and the heat sink (6) is provided on the end of the pin body (5) opposite to the plug-in end.

2. The motor controller according to claim 1, wherein The conductive pin (3) is provided on the drive circuit board (2), and the conductive connection hole (4) is provided on the control circuit board (1).

3. The motor controller according to claim 2, characterized in that, There are multiple conductive pins (3), and the multiple conductive pins (3) are arranged in an array on the drive circuit board (2). There are multiple conductive connection holes (4), and the multiple conductive connection holes (4) are arranged in an array on the control circuit board (1). The multiple conductive connection holes (4) are arranged in one-to-one correspondence with the multiple conductive pins (3).

4. The motor controller according to claim 3, characterized in that Two heat sinks (6) are provided on each pin body (5), and the two heat sinks (6) are symmetrically arranged about the central axis of the pin body (5). Among them, on the drive circuit board (2), the extending directions of the heat sinks (6) on each conductive pin (3) are the same, so that the heat sinks (6) on the adjacent rows of conductive pins (3) jointly form a cooling flow channel for air circulation.

5. The motor controller according to claim 3, characterized in that Multiple heat sinks (6) are provided on each pin body (5), and the multiple heat sinks (6) are arranged at intervals along the circumferential direction of the pin body (5).

6. The motor controller according to claim 1, characterized in that, A thermal grease is provided at the connection between the conductive pin (3) and the drive circuit board (2).

7. The motor controller according to claim 1, characterized in that, The length of the pin body (5) is greater than the hole depth of the conductive connection hole (4).

8. The motor controller according to claim 1, characterized in that, An elastic part (7) is provided at the pin end of the pin body (5). When the conductive pin (3) is installed in the conductive connection hole (4), the elastic part (7) abuts against the bottom of the conductive connection hole (4), and the elastic part (7) is used to absorb the vibration between the conductive pin (3) and the conductive connection hole (4) when the motor controller receives an impact load.

9. The motor controller according to claim 8, characterized in that, The conductive pin (3) is made of copper material.

10. A vehicle, comprising a motor controller, characterized in that, The motor controller is the motor controller described in any one of claims 1 to 9.

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