Electric motorcycle controller

Abstract

The application discloses an electric motorcycle controller, which comprises a heat dissipation bottom plate, a driving plate, a control plate, an upper cover and a power capacitor. Positive and negative polar connecting posts and three phase wire connecting posts are fixed on the driving plate by soldering. The positive and negative polar connecting posts comprise a positive polar connecting post and a negative polar connecting post. The power capacitor comprises an A-zone power capacitor and a B-zone power capacitor which are located on the driving plate and are separately arranged on the left and right sides of the driving plate. The A-zone power capacitor and the B-zone power capacitor are spaced apart. The electric motorcycle controller has the advantage of high working reliability.

Description

Technical Field

[0001] This invention relates to the field of control components technology, and in particular to an electric motorcycle controller. Background Technology

[0002] As a common short-distance transportation tool, electric motorcycles rely heavily on their controllers, which, as core components, need to adapt to complex road conditions and significant power fluctuations. Existing electric motorcycle controllers suffer from the following common defects: 1. Power capacitors are mostly concentrated on the control board, resulting in excessively long current paths, easily causing voltage drops and overheating issues, and large parasitic inductance and resistance, affecting the circuit's dynamic response speed; 2. The integrated power current section on the control board makes it easy for high-voltage signals to severely interfere with low-voltage control signals, leading to controller instability; 3. The single wiring method for the outer electrode terminals cannot meet the installation requirements of different vehicle models, resulting in poor versatility; 4. The drive board and control board are mostly laid flat, resulting in low heat dissipation efficiency, difficulty in quickly conducting heat after the terminals heat up, and delayed response of the temperature protection mechanism, seriously affecting the controller's reliability and lifespan. Summary of the Invention

[0003] The purpose of this invention is to provide an electric motorcycle controller that has the characteristics of shortening electrical paths and having high overall operational reliability.

[0004] The technical solution adopted in this invention is: an electric motorcycle controller, including a heat dissipation base plate, a drive board, a control board, a top cover, and a power capacitor. The drive board has positive and negative terminals and three phase line terminals fixed by soldering. The positive and negative terminals include one positive terminal and one negative terminal. The power capacitor includes an A-area power capacitor and a B-area power capacitor located on the left and right sides of the drive board, respectively, and there is a gap between the A-area power capacitor and the B-area power capacitor.

[0005] The drive board is fixed to the top surface of the heat sink base plate by screws, and thermally conductive silicone grease is filled between the drive board and the heat sink base plate.

[0006] The control board is stacked on top of the drive board, and the fixing screws passing through the control board and the drive board are threadedly connected to the heat dissipation base plate.

[0007] The upper cover covers the upper side of the control panel, and the edge of the upper cover is fixedly connected to the heat dissipation base plate to form a sealed cavity.

[0008] The outer shell, which consists of the top cover and the heat dissipation base plate, is provided with a cable outlet structure, which includes two cable outlet methods that can be used: a vertical cable outlet hole and a horizontal cable outlet groove.

[0009] The control board does not have a power current section.

[0010] The advantages of this invention compared to existing technologies are: higher operational reliability. Specifically, these advantages include the following three aspects:

[0011] 1. Short current path and low interference: The power capacitors are arranged in sections on the driver board, which greatly shortens the electrical path between the power devices and the energy storage capacitors, effectively compensates for the voltage drop caused by the trace length, and reduces parasitic inductance and resistance. Experiments have shown that the parasitic inductance value can be reduced to below 50nH and the resistance to below 5mΩ. At the same time, the control board is isolated from the power current part, which completely avoids the interference of strong current signals on weak current control signals and improves the stability of circuit operation.

[0012] 2. High adaptability: The outer casing has two cable outlet methods: vertical cable outlet hole and horizontal cable outlet groove. It can be flexibly selected according to the installation requirements of different electric motorcycle models, which significantly improves the versatility of the controller.

[0013] 3. High efficiency in heat dissipation: Through a stacked structure, combined with thermal grease with high thermal conductivity and a heat dissipation base plate, a high efficiency heat dissipation channel is formed, and the heat generated by the terminal can be quickly conducted and diffused. Experiments have shown that the operating temperature of the driver board can be reduced by 20-30℃. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0015] Figure 1 This is an exploded perspective view of the electric motorcycle controller according to an embodiment of the present invention;

[0016] Figure 2 This is a circuit diagram of an electric motorcycle controller according to an embodiment of the present invention.

[0017] In the diagram: 10, heat dissipation base plate; 20, drive board; 21, phase wire terminal; 221, power capacitor in area A; 222, power capacitor in area B; 30, control board; 40, top cover; 41, vertical cable outlet hole; 42, horizontal cable outlet groove. Detailed Implementation

[0018] See the example. Figure 1 and Figure 2 As shown: The electric motorcycle controller includes a heat dissipation base plate 10, a drive board 20, a control board 30, a top cover 40, and a power capacitor. The drive board 20 has positive and negative terminals and three phase line terminals 21 fixed on it by soldering. The positive and negative terminals include one positive terminal and one negative terminal.

[0019] To elaborate further:

[0020] The power capacitors are divided into Area A (power capacitor 221) and Area B (power capacitor 222). These two groups are essentially for illustrative purposes, dividing all power capacitors into two groups with roughly equivalent power or based on capacitor type. There are no specific requirements. Both Area A and Area B power capacitors are located on the driver board 20, positioned on the left and right sides of the board, with a distance of at least 50mm between them to ensure optimized partitioning. In practical implementation, the power capacitor 221 in area A can be a ceramic capacitor, and the power capacitor 222 in area B can be an electrolytic capacitor; alternatively, the power capacitor 221 in area A can have a capacitance of 500μF, and the power capacitor 222 in area B can have a capacitance of 300μF, both being electrolytic capacitors. Since the power capacitors are located on the drive board 20, the power current portion corresponding to the power capacitors is also located on the drive board 20, and the control board 30 does not have a power current portion. Therefore, the control board 30 only retains low-voltage control components and has no power current-related components, completely eliminating high-voltage interference.

[0021] Optimized:

[0022] The drive board 20 is fixed to the top surface of the heat sink 10 with screws, and thermal grease is filled between the drive board 20 and the heat sink 10. The thermal conductivity of the thermal grease is ≥2.0W / (m·K), and the thermal grease coverage area on the bottom surface of the drive board 20 is not less than 95% of the total bottom surface area of ​​the drive board 20. The heat sink 10 is preferably made of aluminum alloy to ensure efficient heat conduction.

[0023] The control board 30 is stacked on top of the drive board 20, and the fixing screws passing through the control board 30 and the drive board 20 are threadedly connected to the heat dissipation base plate 10. The fixing screws are stainless steel bolts of M3-M5 specifications, and a locating pin is provided between the control board 30 and the drive board 20. The locating pin and the fixing screw are diagonally distributed to improve structural stability.

[0024] The top cover 40 covers the upper side of the control board 30, and the edge of the top cover 40 is fixedly connected to the heat dissipation base plate 10 to form a sealed cavity. That is, the drive board 20, the control board 30, and their related components are all located within the aforementioned sealed cavity. The top of the top cover 40 has a cable outlet structure corresponding to the three phase wire terminals 21. The cable outlet structure includes two cable outlet methods: a vertical cable outlet hole 41 and a horizontal cable outlet groove 42. One of the two cable outlet methods can be used to adapt to the installation requirements of different electric motorcycles. Both the vertical cable outlet hole 41 and the horizontal cable outlet groove 42 are equipped with sealing rubber rings to ensure sealing performance.

[0025] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. An electric motorcycle controller, comprising a heat dissipation base plate (10), a drive board (20), a control board (30), a top cover (40), and a power capacitor, wherein positive and negative terminals and three phase line terminals (21) are fixed on the drive board (20) by soldering, the positive and negative terminals including one positive terminal and one negative terminal, characterized in that: The power capacitors include an A-area power capacitor (221) and a B-area power capacitor (222) located on the drive board (20) and situated on the left and right sides of the drive board (20), respectively, and there is a gap between the A-area power capacitor (221) and the B-area power capacitor (222).

2. The electric motorcycle controller according to claim 1, characterized in that: The drive board (20) is fixed to the top surface of the heat sink base plate (10) by screws, and thermally conductive silicone grease is filled between the drive board (20) and the heat sink base plate (10).

3. The electric motorcycle controller according to claim 2, characterized in that: The control board (30) is stacked on top of the drive board (20), and the fixing screws that pass through the control board (30) and the drive board (20) are threadedly connected to the heat dissipation base plate (10).

4. The electric motorcycle controller according to claim 3, characterized in that: The upper cover (40) covers the upper side of the control board (30), and the edge of the upper cover (40) is fixedly connected to the heat dissipation base plate (10) to form a sealed cavity.

5. The electric motorcycle controller according to claim 4, characterized in that: The outer shell consisting of the top cover (40) and the heat dissipation base plate (10) is provided with a cable outlet structure, which includes two cable outlet methods that can be selected: a vertical cable outlet hole (41) and a horizontal cable outlet groove (42).

6. The electric motorcycle controller according to claim 1, characterized in that: The control board (30) does not have a power current section.

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