Hydrogen energy two-wheeler hybrid system

Abstract

The utility model discloses a kind of hydrogen energy two-wheeled vehicle hybrid power systems, belong to hydrogen energy two-wheeled vehicle technical field, including lithium battery, and lithium battery is connected with DC / DC and motor controller respectively by circuit, wherein DC / DC and motor controller are connected by circuit, the DC / DC communication connection has fuel cell controller, and fuel cell controller below is connected with cooling fan by communication connection and circuit connection, wherein fuel cell controller is also connected with electric pile tail exhaust valve by circuit, the fuel cell controller is also connected with motor controller, the electric pile tail exhaust valve is connected with fuel cell stack by pipeline, and fuel cell stack is also connected with pressure sensor by pipeline.The hydrogen energy two-wheeled vehicle hybrid power system not only solves the problem of low lithium battery life, short range, etc., but also solves the problem of single fuel cell output dynamic response slow, increases the range of hydrogen energy two-wheeled vehicle, reduces the safety risk, and lithium battery does not need separate external power supply charging.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen-powered two-wheeled vehicle technology, specifically a hydrogen-powered two-wheeled vehicle hybrid power system. Background Technology

[0002] Hydrogen-powered two-wheelers are a new type of transportation using hydrogen fuel cells as their power source. Their core structure includes a frame, electric motor, fuel cell system, solid-state hydrogen storage module, electronic control unit, and power battery. They generate electricity through the chemical reaction of hydrogen and oxygen to drive the vehicle, offering significant advantages such as high energy density, long range, rapid refueling, high safety, and zero carbon emissions. The hybrid power system of hydrogen-powered two-wheelers uses a hydrogen fuel cell as its core, combined with a power battery and electric motor, achieving efficient energy utilization through multi-energy synergy. Traditional lithium batteries have certain drawbacks in terms of safety, lifespan, and environmental friendliness. Compared to traditional lithium battery two-wheelers, hydrogen-powered two-wheelers utilize fuel cells as the primary power source. The desired power source has advantages such as safety, low carbon emissions, environmental friendliness, long driving range, fast hydrogen refueling speed, unaffected by ambient temperature, and long service life. For example, in the prior art 1 (Chinese patent application number CN202411110656.9, application date 2024-08-14), a shared two-wheeled vehicle hydrogen-lithium hybrid circuit control system and control method, the start-up speed is fast. The hydrogen fuel cell and lithium battery provide power in a hybrid manner. During startup, due to the start-up reaction time of the fuel cell, the hydrogen needs to be converted and reacted for a period of time before it can reach the normal operating voltage required by the vehicle. When the energy generated by the fuel cell cannot supply the needs of the vehicle, the lithium battery provides power, thus meeting the need for rapid startup.

[0003] Fuel cells have a slow dynamic response during use and may experience insufficient power during acceleration, which reduces the power response efficiency of hydrogen-powered two-wheeled vehicles and makes them less practical. Therefore, a hydrogen-powered two-wheeled hybrid system has been proposed to effectively solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a hydrogen-powered two-wheeled vehicle hybrid power system to solve the problems mentioned in the background art, such as slow dynamic response and insufficient power during acceleration of fuel cells currently on the market, which reduce the power response efficiency of hydrogen-powered two-wheeled vehicles and result in poor practicality.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a hydrogen-powered two-wheeled vehicle hybrid power system, including a lithium battery, and the lithium battery is connected to a DC / DC converter and a motor controller via circuits, wherein the DC / DC converter and the motor controller are connected via circuits, the DC / DC converter is communicatively connected to a fuel cell controller, and a cooling fan is connected to the fuel cell controller via a communication connection and circuits below it, wherein the fuel cell controller is also connected via a circuit to a fuel cell stack exhaust valve, and the fuel cell controller is also communicatively connected to a motor controller.

[0006] Preferably, the fuel cell stack tail valve is connected to the fuel cell stack via a pipeline, and the fuel cell stack is also connected to a pressure sensor via a pipeline. The pressure sensor is connected to the fuel cell stack inlet valve via a pipeline, and the fuel cell stack inlet valve is connected to a solid hydrogen storage device via a pipeline.

[0007] Preferably, the fuel cell stack is connected to a DC / DC power supply, the fuel cell stack is connected to a bleed resistor via a power supply, a relay is connected below the bleed resistor via a power supply, and the relay is connected to a fuel cell controller via a power supply.

[0008] Preferably, the fuel cell controller is connected to a pressure sensor via communication, the fuel cell controller is also connected to a stack temperature sensor via communication, and the fuel cell controller is also connected to an ambient temperature sensor via communication.

[0009] Preferably, the pressure sensor is connected to the fuel cell stack tail valve via a power supply, the fuel cell stack temperature sensor is also connected to the fuel cell stack tail valve via a power supply, and the ambient temperature sensor is also connected to the fuel cell stack tail valve via a power supply.

[0010] Preferably, the output terminal of the DC / DC converter is connected in parallel with the lithium battery to form an output circuit that is connected to the motor controller for power supply.

[0011] Preferably, the output terminal of the fuel cell stack is connected to the DC / DC input terminal for power supply, and the discharge resistor is connected in series with the relay and then in parallel with the fuel cell stack.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] (1) The hydrogen-powered two-wheeled vehicle hybrid power system solves the problems of low lifespan and short driving range of lithium batteries.

[0014] (2) The hydrogen-powered two-wheeled vehicle hybrid system solves the problem of slow dynamic response of a single fuel cell output.

[0015] (3) It increases the driving range of hydrogen-powered two-wheeled vehicles and reduces safety risks. The lithium battery does not need to be charged by a separate external power source. Attached Figure Description

[0016] Figure 1 This is a diagram of the hybrid power system for the hydrogen-powered two-wheeled vehicle of this utility model;

[0017] Figure 2 This is a system diagram of the fuel cell controller, pressure sensor, stack temperature sensor, and ambient temperature sensor of this utility model.

[0018] Figure 3 This is a system diagram of the tail valve of the fuel cell stack and the solid hydrogen storage device of this utility model;

[0019] Figure 4 This is a system diagram of the lithium battery and motor controller of this utility model;

[0020] Figure 5 This is a system diagram of the tailpipe valve of the fuel cell stack, the fuel cell stack, and the fuel cell controller of this utility model.

[0021] In the diagram: 1. Lithium battery; 2. Stack tail valve; 3. Fuel cell stack; 4. Pressure sensor; 5. Stack temperature sensor; 6. Stack inlet valve; 7. Ambient temperature sensor; 8. Solid hydrogen storage device; 9. Relay; 10. Drain resistor; 11. DC / DC converter; 12. Motor controller; 13. Fuel cell controller; 14. Cooling fan. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-5 This utility model provides the following technical solution: a hydrogen-powered two-wheeled vehicle hybrid power system.

[0024] Example 1: To address the issue of slow dynamic response and potential power shortage during acceleration in existing fuel cells, which reduces the power response efficiency of hydrogen-powered two-wheeled vehicles and makes them impractical, the following is disclosed: a lithium battery 1, which is connected to a DC / DC converter 11 and a motor controller 12 via a circuit. The DC / DC converter 11 and the motor controller 12 are connected via a circuit. The DC / DC converter 11 is communicatively connected to a fuel cell controller 13. A cooling fan 14 is connected to the bottom of the fuel cell controller 13 via a communication connection and a circuit. The fuel cell controller 13 is also connected to a fuel cell stack exhaust valve 2 via a circuit and is communicatively connected to the motor controller 12.

[0025] The fuel cell stack tail valve 2 is connected to the fuel cell stack 3 via a pipeline, and the fuel cell stack 3 is also connected to the pressure sensor 4 via a pipeline. The pressure sensor 4 is connected to the fuel cell stack inlet valve 6 via a pipeline, and the fuel cell stack inlet valve 6 is connected to the solid hydrogen storage device 8 via a pipeline.

[0026] The fuel cell stack 3 is powered by a DC / DC converter 11. The fuel cell stack 3 is powered by a bleed resistor 10, and a relay 9 is powered by a relay 9. The relay 9 is powered by a fuel cell controller 13. The fuel cell controller 13 is connected to a pressure sensor 4 via communication. The fuel cell controller 13 is also connected to a stack temperature sensor 5 via communication. The fuel cell controller 13 is also connected to an ambient temperature sensor 7 via communication. The pressure sensor 4 is powered by a stack exhaust valve 2. The stack temperature sensor 5 is powered by a stack exhaust valve 2. The ambient temperature sensor 7 is powered by a stack exhaust valve 2.

[0027] The output terminal of DC / DC11 is connected in parallel with the lithium battery 1 to form an output circuit that is connected to the power supply of the motor controller 12. The output terminal of the fuel cell stack 3 is connected to the power supply of the input terminal of DC / DC11. The discharge resistor 10 is connected in series with the relay 9 and then connected in parallel with the fuel cell stack 3.

[0028] The hydrogen inlet of the air-cooled fuel cell stack 3 is connected to the solid hydrogen storage device 8, the stack inlet valve 6, and the pressure sensor 4 via a pipeline. Hydrogen gas flows into the fuel cell stack 3 through the hydrogen pipeline to carry out the oxidation-reduction reaction only after the stack inlet valve 6 is opened. Simultaneously, the pressure sensor 4 monitors the hydrogen pressure in the pipeline to determine the status of the fuel cell stack 3 and the solid hydrogen storage device 8. Meanwhile, the water generated during the reaction is promptly discharged through the stack tail drain valve 2 to prevent flooding.

[0029] The system's startup power and cooling fan 14 are powered by lithium battery 1, which typically has a rated voltage of 48V. The remaining components are powered by fuel cell controller 13. DC / DC converter 11 converts the output voltage of fuel cell stack 3 into a stable rated operating voltage of motor controller 12, typically 48V.

[0030] In order to ensure the stable operation of the fuel cell stack 3, a cooling fan 14 is required to dissipate heat and blow in fresh air. The stack temperature sensor 5 and the ambient temperature sensor 7 are used to monitor the temperature of the fuel cell stack 3 and the temperature of the ambient air, and to provide feedback to adjust the speed of the cooling fan 14.

[0031] In this system, the power source for the drive motor comes from two parts: lithium battery 1 and DC / DC 11. DC / DC 11 outputs a constant power. When the motor accelerates, the additional power is supplied by lithium battery 1. When the voltage of lithium battery 1 is too low, the power output of DC / DC 11 can be reversed to charge lithium battery 1, ensuring that the voltage of lithium battery 1 is within a normal range. When the system stops, relay 9 closes, and the voltage of the residual hydrogen reaction in the pipeline is consumed through the bleed resistor 10, avoiding damage to the fuel cell stack. This not only solves the problems of low lifespan and short driving range of lithium battery 1, but also solves the problem of slow dynamic response of single fuel cell output, increasing the driving range of hydrogen-powered two-wheeled vehicles and reducing safety risks.

[0032] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0033] The contents not described in detail in this specification are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A hydrogen-powered two-wheeled vehicle hybrid power system, comprising a lithium battery (1), wherein the lithium battery (1) is connected to a DC / DC converter (11) and a motor controller (12) via a circuit, wherein the DC / DC converter (11) and the motor controller (12) are connected via a circuit; Its features are: The DC / DC (11) is connected to a fuel cell controller (13) via communication, and a cooling fan (14) is connected to the bottom of the fuel cell controller (13) via communication and circuit. The fuel cell controller (13) is also connected to a stack tail valve (2) via circuit. The fuel cell controller (13) is also connected to a motor controller (12) via communication.

2. The hydrogen energy two-wheeler hybrid powertrain system as claimed in claim 1 wherein: The fuel cell stack tail valve (2) is connected to the fuel cell stack (3) via a pipeline, and the fuel cell stack (3) is also connected to a pressure sensor (4) via a pipeline. The pressure sensor (4) is connected to the fuel cell stack inlet valve (6) via a pipeline, and the fuel cell stack inlet valve (6) is connected to a solid hydrogen storage device (8) via a pipeline.

3. The hydrogen-powered two-wheeled vehicle hybrid power system according to claim 2, characterized in that: The fuel cell stack (3) is connected to a DC / DC converter (11) for power supply. The fuel cell stack (3) is connected to a bleed resistor (10) for power supply. A relay (9) is connected to the bottom of the bleed resistor (10) for power supply. The relay (9) is connected to a fuel cell controller (13) for power supply.

4. The hydrogen energy two-wheeler hybrid powertrain system as claimed in claim 3, wherein: The fuel cell controller (13) is connected to a pressure sensor (4) via communication. The fuel cell controller (13) is also connected to a stack temperature sensor (5) via communication. The fuel cell controller (13) is also connected to an ambient temperature sensor (7) via communication.

5. The hydrogen energy two-wheeler hybrid powertrain system as claimed in claim 4 wherein: The pressure sensor (4) is connected to the fuel cell tail drain valve (2) via power supply, the fuel cell temperature sensor (5) is also connected to the fuel cell tail drain valve (2) via power supply, and the ambient temperature sensor (7) is also connected to the fuel cell tail drain valve (2) via power supply.

6. The hydrogen energy two-wheeler hybrid powertrain system as claimed in claim 1 wherein: The output terminal of the DC / DC (11) is connected in parallel with the lithium battery (1) to form an output circuit that is connected to the motor controller (12) for power supply.

7. The hydrogen energy two-wheeler hybrid powertrain system as claimed in claim 3 wherein: The output terminal of the fuel cell stack (3) is connected to the input terminal of the DC / DC (11) for power supply. The discharge resistor (10) is connected in series with the relay (9) and then connected in parallel with the fuel cell stack (3).

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