阅读说明：本技术 一种氢能汽车的燃料电池能量管理系统 (Fuel cell energy management system of hydrogen energy automobile ) 是由 祯昌辰隆 魏跃晖 范华明 张永波 于 2021-08-10 设计创作，主要内容包括：本发明公开了一种氢能汽车的燃料电池能量管理系统,涉及氢燃料新能源技术领域,当发动机驱动车轮转动时,发动机与发电机之间的动力断开,当汽车在行驶过程中制动时,发动机亦相应的不驱动车轮转动,同时发动机与发电机传动连接,使发动机空转的动能带动发电机转动,产生的电能通过电池组储存起来,同时通过DC-DC双向变换器对超级电容进行充电,最大限度实现能量的回收,避免氢燃料电池反应堆产生的多余电能被浪费,当电动汽车起步、加速需要大功率电能时,总控制系统分别给出信号至电池监控单元和电容控制单元,通过电池组和超级电容辅助参与放电,补充部分发动机所需要的功率,从而使本发明与传统技术相比,提高了能量的利用率。(The invention discloses a fuel cell energy management system of a hydrogen energy automobile, which relates to the technical field of new energy of hydrogen fuel, when an engine drives wheels to rotate, the power between the engine and a generator is disconnected, when the automobile is braked in the driving process, the engine also does not drive the wheels to rotate correspondingly, and simultaneously the engine is in transmission connection with the generator, so that the kinetic energy generated by the idling of the engine drives the generator to rotate, the generated electric energy is stored through a battery pack, and simultaneously a super capacitor is charged through a DC-DC bidirectional converter, the recovery of the energy is realized to the maximum extent, the waste of redundant electric energy generated by a hydrogen fuel cell reactor is avoided, when the electric automobile needs high-power electric energy for starting and accelerating, a master control system respectively gives signals to a battery monitoring unit and a capacitor control unit, and the electric energy is discharged through the battery pack and the super capacitor, the power required by part of the engine is supplemented, so that the invention improves the utilization rate of energy compared with the prior art.)

1. A fuel cell energy management system for a hydrogen powered vehicle, comprising:

a hydrogen fuel cell reactor that converts the received hydrogen and oxygen into electrical energy required by a hydrogen fuel vehicle;

the hydrogen storage tank is communicated with the hydrogen fuel cell reactor through a connecting pipe and provides hydrogen for the hydrogen fuel cell reactor;

the control valve is arranged on a connecting pipe between the hydrogen storage tank and the hydrogen fuel cell reactor and used for controlling the flow and the on-off of the hydrogen gas delivery;

the oxygen supply system is communicated with the hydrogen fuel cell reactor through a connecting pipe and is used for supplying oxygen to the hydrogen fuel cell reactor;

the electric control module is electrically connected with the hydrogen fuel cell reactor and used for controlling the voltage and the power of electric energy output in the hydrogen fuel cell reactor;

the engine is electrically connected with the electric control module, and the electric energy generated by the hydrogen fuel cell reactor drives the engine to rotate through the electric control module so as to drive the wheels to rotate;

the generator is used for disconnecting power between the engine and the generator when the engine drives the wheels to rotate, and is in transmission connection with the generator when the engine does not drive the wheels to rotate;

the battery pack is electrically connected with the generator and is used for storing electric energy generated by the generator;

the battery monitoring unit is in signal connection with the battery pack and controls charging and discharging of the battery pack;

the DC-DC bidirectional converter is electrically connected with the generator and is used for performing bidirectional charging and discharging with the motor;

the super capacitor is electrically connected with the DC-DC bidirectional converter;

the super capacitor and the DC-DC bidirectional converter are respectively in signal connection with the capacitor control unit to control the charging and discharging of the super capacitor;

and the master control system, the battery monitoring unit and the capacitance control unit are respectively in signal connection with the master control system.

2. The fuel cell energy management system of a hydrogen powered vehicle of claim 1, wherein: the hydrogen provided by the main hydrogen storage tank or the standby hydrogen storage tank is introduced into the hydrogen fuel cell reactor as a cathode, the oxygen provided by the oxygen supply system is introduced into the hydrogen fuel cell reactor as an anode, and the anode and the cathode react to generate electric energy.

3. The fuel cell energy management system of a hydrogen powered vehicle of claim 1, wherein: and the battery monitoring unit and the capacitor control unit are in data communication with a master control system through a CAN bus.

4. The fuel cell energy management system of a hydrogen powered vehicle of claim 1, wherein: the battery monitoring unit further comprises a temperature sensor, a voltage sensor and a current sensor, wherein the temperature sensor, the voltage sensor and the current sensor are respectively used for monitoring the temperature, the voltage and the current of the battery pack and sending monitoring information to the master control system for analysis and processing.

5. The fuel cell energy management system of a hydrogen powered vehicle of claim 1, wherein: the oxygen supply system comprises an air filtration system and an oxygen generation system, wherein the air filtration system filters air and then conveys the air to the oxygen generation system, oxygen in the air is extracted through the oxygen generation system and conveyed to the hydrogen fuel cell reactor.

6. The fuel cell energy management system of a hydrogen powered vehicle of claim 1, wherein: and a water discharge system through which water generated after the hydrogen and oxygen react inside the hydrogen fuel cell reactor is discharged.

7. The fuel cell energy management system of a hydrogen powered vehicle of claim 1, wherein: the hydrogen storage tank is characterized by further comprising an air charging device, and the air charging device is communicated with the air inlet end of the main hydrogen storage tank.

8. The fuel cell energy management system of a hydrogen-powered automobile according to any one of claims 1 to 7, characterized in that: the master control system adopts a microprocessor.

Technical Field

The invention relates to the technical field of new hydrogen fuel energy, in particular to a fuel cell energy management system of a hydrogen energy automobile.

Background

The hydrogen fuel cell automobile is more and more favored by people with the advantages of higher energy conversion efficiency and almost zero emission pollution, and it is predicted that the application of the hydrogen fuel cell automobile is more and more extensive along with the development of automobile technology, the hydrogen fuel cell automobile usually uses a hydrogen fuel cell reactor as a main energy source and a battery as an auxiliary energy source, however, the automobile is often braked in the driving process, redundant electric energy generated by the hydrogen fuel cell reactor can only be wasted, and the problem of low energy utilization rate exists in the prior art.

Disclosure of Invention

The invention aims to recover the redundant electric energy generated by a hydrogen fuel cell reactor and improve the utilization rate of the energy.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a fuel cell energy management system for a hydrogen powered vehicle, comprising:

a hydrogen fuel cell reactor that converts the received hydrogen and oxygen into electrical energy required by a hydrogen fuel vehicle;

the hydrogen storage tank is communicated with the hydrogen fuel cell reactor through a connecting pipe and provides hydrogen for the hydrogen fuel cell reactor;

the control valve is arranged on a connecting pipe between the hydrogen storage tank and the hydrogen fuel cell reactor and used for controlling the flow and the on-off of the hydrogen gas delivery;

the oxygen supply system is communicated with the hydrogen fuel cell reactor through a connecting pipe and is used for supplying oxygen to the hydrogen fuel cell reactor;

the electric control module is electrically connected with the hydrogen fuel cell reactor and used for controlling the voltage and the power of electric energy output in the hydrogen fuel cell reactor;

the engine is electrically connected with the electric control module, and the electric energy generated by the hydrogen fuel cell reactor drives the engine to rotate through the electric control module so as to drive the wheels to rotate;

the generator is used for disconnecting power between the engine and the generator when the engine drives the wheels to rotate, and is in transmission connection with the generator when the engine does not drive the wheels to rotate;

the battery pack is electrically connected with the generator and is used for storing electric energy generated by the generator;

the battery monitoring unit is in signal connection with the battery pack and controls charging and discharging of the battery pack;

the DC-DC bidirectional converter is electrically connected with the generator and is used for performing bidirectional charging and discharging with the motor;

the super capacitor is electrically connected with the DC-DC bidirectional converter;

the super capacitor and the DC-DC bidirectional converter are respectively in signal connection with the capacitor control unit to control the charging and discharging of the super capacitor;

and the master control system, the battery monitoring unit and the capacitance control unit are respectively in signal connection with the master control system.

Further, hydrogen provided by the main hydrogen storage tank or the standby hydrogen storage tank is introduced into the hydrogen fuel cell reactor as a cathode, oxygen provided by the oxygen supply system is introduced into the hydrogen fuel cell reactor as an anode, and a reaction is generated between the anode and the cathode to generate electric energy.

Furthermore, the battery monitoring unit and the capacitance control unit are in data communication with a master control system through a CAN bus.

Furthermore, the battery monitoring unit also comprises a temperature sensor, a voltage sensor and a current sensor, wherein the temperature sensor, the voltage sensor and the current sensor are respectively used for monitoring the temperature, the voltage and the current of the battery pack and sending monitoring information to a master control system for analysis and processing.

Further, the oxygen supply system comprises an air filtering system and an oxygen generation system, wherein the air filtering system filters air and then conveys the air to the oxygen generation system, and oxygen in the air is extracted by the oxygen generation system and conveyed to the hydrogen fuel cell reactor.

Further, a water discharge system is included through which water produced after reaction of hydrogen and oxygen gas inside the hydrogen fuel cell reactor is discharged.

Further, the hydrogen storage device also comprises an air charging device which is communicated with the air inlet end of the main hydrogen storage tank.

Further, the general control system adopts a microprocessor.

The invention has the beneficial effects that: the hydrogen storage tank is used for providing hydrogen for the hydrogen fuel cell reactor, the oxygen supply system is used for providing oxygen for the hydrogen fuel cell reactor, so that the hydrogen fuel cell reactor continuously generates electric energy, and the electric control module is used for controlling the voltage within a stable range, so that the engine is electrified to work, and the wheels are driven to rotate; when the engine drives the wheels to rotate, the power between the engine and the generator is cut off, and the electric energy continuously generated by the hydrogen fuel cell reactor is converted into the kinetic energy of the engine; when the electric automobile is braked in the driving process, the engine also correspondingly does not drive wheels to rotate, and meanwhile, the engine is in transmission connection with the generator, so that kinetic energy generated by idling of the engine drives the generator to rotate, the generated electric energy is stored through the battery pack, the super capacitor is charged through the DC-DC bidirectional converter, the recovery of energy is realized to the maximum extent, the waste of redundant electric energy generated by the hydrogen fuel cell reactor is avoided, when the electric automobile needs high-power electric energy for starting and accelerating, the master control system respectively gives signals to the battery monitoring unit and the capacitor control unit, and the battery pack and the super capacitor assist in discharging to supplement partial power needed by the engine, so that the utilization rate of energy is improved compared with the traditional technology.

Drawings

FIG. 1 is a schematic flow diagram of the present invention.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

A fuel cell energy management system of a hydrogen powered vehicle as shown in fig. 1, comprising:

a hydrogen fuel cell reactor that converts the received hydrogen and oxygen into electrical energy required by a hydrogen fuel vehicle; the hydrogen provided by the main hydrogen storage tank or the standby hydrogen storage tank is introduced into the hydrogen fuel cell reactor as a cathode, the oxygen provided by the oxygen supply system is introduced into the hydrogen fuel cell reactor as an anode, and the anode and the cathode react to generate electric energy;

the hydrogen storage tank is communicated with the hydrogen fuel cell reactor through a connecting pipe and provides hydrogen for the hydrogen fuel cell reactor;

the air charging device is communicated with the air inlet end of the main hydrogen storage tank;

the control valve is arranged on a connecting pipe between the hydrogen storage tank and the hydrogen fuel cell reactor and used for controlling the flow and the on-off of the hydrogen gas delivery;

the oxygen supply system is communicated with the hydrogen fuel cell reactor through a connecting pipe and is used for supplying oxygen to the hydrogen fuel cell reactor;

a water discharge system through which water generated after the hydrogen and oxygen react inside the hydrogen fuel cell reactor is discharged;

the electric control module is electrically connected with the hydrogen fuel cell reactor and used for controlling the voltage and the power of electric energy output in the hydrogen fuel cell reactor;

the engine is electrically connected with the electric control module, and the electric energy generated by the hydrogen fuel cell reactor drives the engine to rotate through the electric control module so as to drive the wheels to rotate;

the generator is used for disconnecting power between the engine and the generator when the engine drives the wheels to rotate, and is in transmission connection with the generator when the engine does not drive the wheels to rotate;

the battery pack is electrically connected with the generator and is used for storing electric energy generated by the generator;

the battery monitoring unit is in signal connection with the battery pack and controls charging and discharging of the battery pack;

the DC-DC bidirectional converter is electrically connected with the generator and is used for performing bidirectional charging and discharging with the motor;

the super capacitor is electrically connected with the DC-DC bidirectional converter;

the super capacitor and the DC-DC bidirectional converter are respectively in signal connection with the capacitor control unit to control the charging and discharging of the super capacitor;

and the master control system adopts a microprocessor, and the battery monitoring unit and the capacitance control unit are respectively in signal connection with the master control system.

The battery monitoring unit and the capacitance control unit are in data communication with the master control system through the CAN bus, and the CAN bus enables communication data to be accurate and stable.

The hydrogen storage tank is used for providing hydrogen for the hydrogen fuel cell reactor, the oxygen supply system is used for providing oxygen for the hydrogen fuel cell reactor, so that the hydrogen fuel cell reactor continuously generates electric energy, and the electric control module is used for controlling the voltage in a stable range, so that the engine is electrified to work, and the wheels are driven to rotate.

When the engine drives the wheels to rotate, the power between the engine and the generator is cut off, and the electric energy continuously generated by the hydrogen fuel cell reactor is converted into the kinetic energy of the engine; when the electric automobile is braked in the driving process, the engine also correspondingly does not drive wheels to rotate, and meanwhile, the engine is in transmission connection with the generator, so that kinetic energy generated by idling of the engine drives the generator to rotate, the generated electric energy is stored through the battery pack, the super capacitor is charged through the DC-DC bidirectional converter, the recovery of energy is realized to the maximum extent, the waste of redundant electric energy generated by the hydrogen fuel cell reactor is avoided, when the electric automobile needs high-power electric energy for starting and accelerating, the master control system respectively gives signals to the battery monitoring unit and the capacitor control unit, and the battery pack and the super capacitor assist in discharging to supplement partial power required by the engine, so that the utilization rate of the energy is improved.

The battery monitoring unit further comprises a temperature sensor, a voltage sensor and a current sensor, wherein the temperature sensor, the voltage sensor and the current sensor are respectively used for monitoring the temperature, the voltage and the current of the battery pack and sending monitoring information to the master control system for analysis and processing.

The oxygen supply system comprises an air filtration system and an oxygen generation system, wherein the air filtration system filters air and then conveys the air to the oxygen generation system, oxygen in the air is extracted through the oxygen generation system and conveyed to the hydrogen fuel cell reactor.

The working principle of the invention is as follows: the hydrogen storage tank is filled with hydrogen through the inflation device, the hydrogen storage tank provides hydrogen for the hydrogen fuel cell reactor, and the oxygen supply system provides oxygen for the hydrogen fuel cell reactor, so that the hydrogen fuel cell reactor continuously generates electric energy, the electric control module controls the voltage within a stable range, the engine is electrified to work, and the wheels are driven to rotate.

When the engine drives the wheels to rotate, the power between the engine and the generator is cut off, and the electric energy continuously generated by the hydrogen fuel cell reactor is converted into the kinetic energy of the engine; when the automobile is braked in the driving process, the engine also correspondingly does not drive wheels to rotate, meanwhile, the engine is in transmission connection with the generator, so that the kinetic energy generated by idling of the engine drives the generator to rotate, the generated electric energy is stored through the battery pack, and meanwhile, the super capacitor is charged through the DC-DC bidirectional converter, the recovery of the energy is realized to the maximum extent, and the waste of redundant electric energy generated by the hydrogen fuel cell reactor is avoided.

When the electric automobile needs high-power electric energy for starting and accelerating, the master control system respectively gives signals to the battery monitoring unit and the capacitor control unit, and the battery pack and the super capacitor assist in discharging to supplement power needed by part of the engine.

The above description is not intended to limit the technical scope of the present invention, and any modification, equivalent change and modification of the above embodiments according to the technical spirit of the present invention are still within the technical scope of the present invention.