An ABS system for electric motorcycles

Abstract

The utility model relates to anti -lock braking technology discloses a kind of ABS system suitable for electric motorcycle, it includes ABS ECU unit (3), HCU valve body (2) and DC voltage reduction module (1), HCU valve body (2) is equipped with BUSBAR bus, one end of BUSBAR bus is connected with ABS ECU unit (3), the other end of BUSBAR bus is connected with DC voltage reduction module (1).The utility model integrates the framework that DC voltage reduction module and ABS ECU unit are together.Aluminium valve body of ABS is used as radiator of DC voltage reduction module, save space while also reduce cost.

Description

Technical Field

[0001] This utility model relates to anti-lock braking technology, and more particularly to an ABS system suitable for electric motorcycles. Background Technology

[0002] ABS (Anti-lock Braking System) is a commonly used active safety control system in automobiles. Its main function is to adjust the braking force at the wheels during braking to prevent wheel lock-up. When wheels lock up, the tires slide against the ground, resulting in a longer braking distance and even loss of control. The ABS system uses electromechanical control to precisely control the release and contraction of brake fluid at extremely high speeds, keeping the wheels in a state of rolling and sliding, with a slip ratio of approximately 20%, to ensure maximum braking force and steering ability during braking. This allows the vehicle to maintain good stability and steering ability even under emergency braking conditions.

[0003] Because ABS significantly improves driving safety, it's no longer just a feature in cars; some high-end motorcycles are also starting to be equipped with ABS systems to prevent skidding, fishtailing, and even tipping over. Meanwhile, with the advent of the new energy era, the market share of electric motorcycles has gradually surpassed that of traditional gasoline-powered motorcycles. The electrical architecture of electric motorcycles is similar to that of new energy vehicles, powered by high-voltage lithium batteries or high-voltage lead-acid batteries, typically with a supply voltage of 48V~72V. To power the low-voltage system, an additional small-to-medium power DC transformer and a low-voltage battery are required. The high-voltage battery charges the low-voltage battery via DC, and the low-voltage battery then supplies power to the low-voltage system. The peak current during appliance startup is provided by the battery. Alternatively, a high-power DC transformer can directly power the low-voltage system.

[0004] For example, the prior art CN202120209609.5 includes a vehicle main control board, an interface unit, and an ABS circuit. The interface unit is electrically connected to the vehicle main control board. The interface unit has pins that can be adapted to connect to any of the two types of ABS chips. One end of the ABS circuit is electrically connected to the pins of the interface unit, and the other end is used to connect to the pins of the ABS chip. This separates the ABS circuit from the vehicle control board and integrates the vehicle control boards of the two ABS systems. The interface unit allows the same vehicle control board to be matched with two different ABS circuits.

[0005] When ABS is working, it needs to drive the pump motor and solenoid valve coil, generating a transient current of over 30A. Direct DC power supply requires an output current of over 40A, typically exceeding 400W, resulting in significant heat generation. Therefore, the DC transformer needs a large heatsink, leading to a large overall system size and occupying limited space on the motorcycle. Furthermore, both additional low-voltage batteries and high-power DC transformer solutions are costly, involve numerous wiring harnesses, and require significant space. Additionally, the DC power supply is a non-intelligent component; regardless of system idle or active state, it outputs a constant voltage of around 13V, resulting in high static power consumption and impacting battery life. Summary of the Invention

[0006] This invention addresses the problems of high cost, numerous wiring harnesses, and large layout space in existing technologies by providing an ABS system suitable for electric motorcycles.

[0007] To solve the above-mentioned technical problems, the present invention provides a solution through the following technical method:

[0008] An ABS system for electric motorcycles includes an ABS ECU unit, an HCU valve body, and a DC step-down module; the HCU valve body is equipped with a BUSBAR bus, one end of which is connected to the ABS ECU unit, and the other end of which is connected to the DC step-down module.

[0009] Preferably, the vehicle controller or the ignition switch on the vehicle is used to control the EN enable signal of the DC module. The EN enable signal of the DC module is used to activate the output of the DC module and the wake-up signal of the ABS module.

[0010] The vehicle's high-voltage battery is connected to the ABS connector via an external wiring harness. The input voltage is then connected to the DC module via the ABS module and the BUSBAR bus. The DC module depressurizes the input voltage and steps it down. The DC module then connects the stepped-down voltage to the ABS module via the BUSBAR bus.

[0011] Preferably, the DC buck module includes a high-low voltage switching circuit, which converts the high voltage input to the DC buck module into a low voltage output to the ABS ECU unit.

[0012] Preferably, the high voltage input to the DC step-down module is converted to a low voltage output to the ABS ECU unit, which includes a voltage divider unit and a switching unit K1. The voltage divider unit includes resistors R3, R4, and R5. The FB terminal of the DC step-down module is connected to resistor R4, and the other end of resistor R4 is grounded. The output terminal of the DC step-down module is connected to resistor R5, the other end of resistor R5 is connected to resistor R3, and the other end of resistor R3 is connected to the switching unit K1. One end of the switching unit K1 is connected to an isolation unit Q1 and a resistor R2. The other end of resistor R2 is connected to the output voltage VO. The other end of the isolation unit Q1 is connected to the ABS module.

[0013] Preferably, the switching unit K1 is a relay, MOSFET or transistor.

[0014] Preferably, the isolation unit Q1 is a NOT gate.

[0015] Preferably, the HCU valve body is made of a conductive and heat-dissipating material.

[0016] For optimal performance, the HCU valve body should be either I-shaped or L-shaped. If the HCU valve body is I-shaped, it is located on the bottom of the DC step-down module; if the HCU valve body is L-shaped, it is located on the side of the DC step-down module.

[0017] This utility model, by adopting the above technical solution, has significant technical effects:

[0018] This invention integrates the DC transformer with the ABS body, saving layout space.

[0019] The ABS valve body aluminum block of this utility model is used as a heat sink for DC step-down modules, reducing the cost of independent heat sinks.

[0020] This utility model allows for flexible use of either an I-shaped or L-shaped arrangement for the valve body. If the HCU valve body is I-shaped, it is located on the bottom surface of the DC step-down module; if the HCU valve body is L-shaped, it is located on the side surface of the DC step-down module. Its design structure is compact.

[0021] This utility model features DC power input / output and ABS wiring routed inside the cavity, resulting in a neat appearance, saving on wiring harnesses, and reducing high-current line losses.

[0022] This utility model's ABS active monitoring system can adjust the DC output to a low voltage when idle, reducing power consumption and increasing driving range. Attached Figure Description

[0023] Figure 1 This is a system schematic diagram of this utility model.

[0024] Figure 2 This is a wiring diagram of this utility model.

[0025] Figure 3 This is the circuit diagram of the DC step-down module of this utility model.

[0026] Figure 4 This is a schematic diagram of the structure of this utility model.

[0027] Among them, 1—DC step-down module, 2—HCU valve body, 3—ABS ECU unit. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0029] Example 1

[0030] An ABS system for electric motorcycles includes an ABS ECU unit 3, an HCU valve body 2, and a DC step-down module 1; the HCU valve body 2 is equipped with a BUSBAR bus, one end of which is connected to the ABS ECU unit 3, and the other end of which is connected to the DC step-down module 1.

[0031] The vehicle controller or the ignition switch on the vehicle is used to control the EN enable signal of the DC module. The EN enable signal of the DC module is used to activate the output of the DC module and the wake-up signal of the ABS module.

[0032] The vehicle's high-voltage battery is connected to the ABS connector via an external wiring harness. The input voltage is then connected to the DC module via the ABS module and the BUSBAR bus. The DC module depressurizes the input voltage and steps it down. The DC module then connects the stepped-down voltage to the ABS module via the BUSBAR bus.

[0033] DC step-down module 1 includes a high-low voltage switching circuit, which is used to convert the high voltage input to DC step-down module 1 into a low voltage output to ABS ECU unit 3.

[0034] The high voltage input from the DC step-down module 1 is converted to a lower voltage output to the ABS ECU unit 3, which includes a voltage divider unit and a switching unit K1. The voltage divider unit includes resistors R3, R4, and R5. The FB terminal of the DC step-down module 1 is connected to resistor R4, and the other end of resistor R4 is grounded. The output terminal of the DC step-down module 1 is connected to resistor R5, the other end of resistor R5 is connected to resistor R3, and the other end of resistor R3 is connected to the switching unit K1. One end of the switching unit K1 is connected to an isolation unit Q1 and a resistor R2. The other end of resistor R2 is connected to the output voltage VO. The other end of the isolation unit Q1 is connected to the ABS module. The switching unit K1 is a transistor. The isolation unit Q1 is a NOT gate. The HCU valve body 2 is made of a conductive and heat-dissipating material.

[0035] Example 2

[0036] An ABS system for electric motorcycles includes an ABS ECU unit 3, an HCU valve body 2, and a DC step-down module 1; the HCU valve body 2 is equipped with a BUSBAR bus, one end of which is connected to the ABS ECU unit 3, and the other end of which is connected to the DC step-down module 1.

[0037] The vehicle controller or the ignition switch on the vehicle is used to control the EN enable signal of the DC module. The EN enable signal of the DC module is used to activate the output of the DC module and the wake-up signal of the ABS module.

[0038] The vehicle's high-voltage battery is connected to the ABS connector via an external wiring harness. The input voltage is then connected to the DC module via the ABS module and the BUSBAR bus. The DC module depressurizes the input voltage and steps it down. The DC module then connects the stepped-down voltage to the ABS module via the BUSBAR bus.

[0039] DC step-down module 1 includes a high-low voltage switching circuit, which is used to convert the high voltage input to DC step-down module 1 into a low voltage output to ABS ECU unit 3.

[0040] The high voltage input from the DC step-down module 1 is converted to a lower voltage output to the ABS ECU unit 3, which includes a voltage divider unit and a switching unit K1. The voltage divider unit includes resistors R3, R4, and R5. The FB terminal of the DC step-down module 1 is connected to resistor R4, and the other end of resistor R4 is grounded. The output terminal of the DC step-down module 1 is connected to resistor R5, the other end of resistor R5 is connected to resistor R3, and the other end of resistor R3 is connected to the switching unit K1. One end of the switching unit K1 is connected to an isolation unit Q1 and a resistor R2. The other end of resistor R2 is connected to the output voltage VO. The other end of the isolation unit Q1 is connected to the ABS module. The switching unit K1 is a relay. The isolation unit Q1 is a NOT gate. The HCU valve body 2 is made of a conductive and heat-dissipating material.

[0041] Example 3

[0042] An ABS system for electric motorcycles includes an ABS ECU unit 3, an HCU valve body 2, and a DC step-down module 1; the HCU valve body 2 is equipped with a BUSBAR bus, one end of which is connected to the ABS ECU unit 3, and the other end of which is connected to the DC step-down module 1.

[0043] The vehicle controller or the ignition switch on the vehicle is used to control the EN enable signal of the DC module. The EN enable signal of the DC module is used to activate the output of the DC module and the wake-up signal of the ABS module.

[0044] The vehicle's high-voltage battery is connected to the ABS connector via an external wiring harness. The input voltage is then connected to the DC module via the ABS module and the BUSBAR bus. The DC module depressurizes the input voltage and steps it down. The DC module then connects the stepped-down voltage to the ABS module via the BUSBAR bus.

[0045] DC step-down module 1 includes a high-low voltage switching circuit, which is used to convert the high voltage input to DC step-down module 1 into a low voltage output to ABS ECU unit 3.

[0046] The high voltage input from the DC step-down module 1 is converted to a lower voltage output to the ABS ECU unit 3, which includes a voltage divider unit and a switching unit K1. The voltage divider unit includes resistors R3, R4, and R5. The FB terminal of the DC step-down module 1 is connected to resistor R4, and the other end of resistor R4 is grounded. The output terminal of the DC step-down module 1 is connected to resistor R5, the other end of resistor R5 is connected to resistor R3, and the other end of resistor R3 is connected to the switching unit K1. One end of the switching unit K1 is connected to an isolation unit Q1 and a resistor R2. The other end of resistor R2 is connected to the output voltage VO. The other end of the isolation unit Q1 is connected to the ABS module. The switching unit K1 is a MOSFET. The isolation unit Q1 is a NOT gate. The HCU valve body 2 is made of a conductive and heat-dissipating material. The material of the HCU valve body 2 is aluminum.

[0047] The DC step-down module 1 internally reduces the 72V voltage to 13V before outputting it to the ABS.

[0048] Furthermore, to dynamically adjust the output voltage of DC-DC step-down module 1, ensuring that it outputs a low voltage (e.g., 10V) when the ABS is not needed and a high voltage (e.g., 13V) when the ABS is needed, thus reducing system static power consumption, the output of DC-DC step-down module 1 is intelligently adjusted via the ABS. A high / low voltage switching control signal is added to the BUSBAR bus.

[0049] Example 4

[0050] An ABS system for electric motorcycles includes an ABS ECU unit 3, an HCU valve body 2, and a DC step-down module 1; the HCU valve body 2 is equipped with a BUSBAR bus, one end of which is connected to the ABS ECU unit 3, and the other end of which is connected to the DC step-down module 1.

[0051] If the HCU valve body 2 adopts type I, then the HCU valve body 2 is located on the bottom surface of the DC step-down module 1.

[0052] Example 5

[0053] An ABS system for electric motorcycles includes an ABS ECU unit 3, an HCU valve body 2, and a DC step-down module 1; the HCU valve body 2 is equipped with a BUSBAR bus, one end of which is connected to the ABS ECU unit 3, and the other end of which is connected to the DC step-down module 1.

[0054] The HCU valve body 2 adopts an L-shaped arrangement, and is located on the side of the DC step-down module 1.

Claims

1. An ABS system for electric motorcycles, comprising an ABS ECU unit (3), an HCU valve body (2), and a DC step-down module (1); characterized in that, The HCU valve body (2) is equipped with a BUSBAR bus. One end of the BUSBAR bus is connected to the ABS ECU unit (3), and the other end of the BUSBAR bus is connected to the DC step-down module (1).

2. The ABS system for electric motorcycles according to claim 1, characterized in that... The vehicle controller or the ignition switch on the vehicle is used to control the EN enable signal of the DC module. The EN enable signal of the DC module is used to activate the output of the DC module and the wake-up signal of the ABS module. The vehicle's high-voltage battery is connected to the ABS connector via an external wiring harness. The input voltage is then connected to the DC module via the ABS module and the BUSBAR bus. The DC module depressurizes the input voltage and performs step-down processing. The DC module connects the stepped-down voltage to the ABS module via the BUSBAR bus.

3. The ABS system for electric motorcycles according to claim 1, characterized in that... The DC step-down module (1) includes a high-low voltage switching circuit, which is used to convert the high voltage input to the DC step-down module (1) into a low voltage output to the ABS ECU unit (3).

4. The ABS system for electric motorcycles according to claim 1, characterized in that... The high voltage input to the DC step-down module (1) is converted into a low voltage output to the ABS ECU unit (3). The ECU unit (3) is equipped with a voltage divider unit and a switching unit K1. The voltage divider unit includes resistors R3, R4, and R5. The FB terminal of the DC step-down module (1) is connected to resistor R4, and the other end of resistor R4 is grounded. The output terminal of the DC step-down module (1) is connected to resistor R5, the other end of resistor R5 is connected to resistor R3, and the other end of resistor R3 is connected to the switching unit K1. One end of the switching unit K1 is connected to the isolation unit Q1 and resistor R2. The other end of resistor R2 is connected to the output voltage VO. The other end of the isolation unit Q1 is connected to the ABS module.

5. An ABS system for electric motorcycles according to claim 4, characterized in that... Switching unit K1 can be a relay, MOSFET, or transistor.

6. An ABS system for electric motorcycles according to claim 4, characterized in that... Isolation unit Q1 is a NOT gate.

7. An ABS system for electric motorcycles according to claim 1, characterized in that... The HCU valve body (2) is made of a conductive and heat-dissipating material.

8. An ABS system for electric motorcycles according to claim 1, characterized in that... The HCU valve body (2) is I-shaped or L-shaped.

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