阅读说明：本技术 一种车辆中的氢燃料电池的控制系统、方法及电动汽车 (Control system and method for hydrogen fuel cell in vehicle and electric automobile ) 是由 罗沈 林韶文 苏立 林洪栋 李飞 王建明 陈光后 于 2021-07-12 设计创作，主要内容包括：本申请公开了一种车辆中的氢燃料电池的控制系统、方法及电动汽车,基于考虑到车辆的实时工况,通过电池管理单元获取电池组的剩余电量以及瞬时请求电量,当剩余电量低于预设电量时,则生成充电指示信号发送至车辆控制单元,并由燃料电池控制模块根据充电指示信号和瞬时请求电量确定氢燃料电池堆提供给电池组的充电功率,以使得所述电池组的剩余电量充电至预设电量,从而可以有效地为电池组进行充电,提高了对车辆的供电需求的供电效率,满足车辆对电能的需求。同时,通过充电指示信号和瞬时请求电量确定氢燃料电池堆提供给电池组的充电功率,以获得合理的供电策略,可以实现有效供电,提高了氢燃料电池堆的使用寿命。(The application discloses control system and method of hydrogen fuel cell in vehicle and electric automobile, based on the real-time operating mode of considering the vehicle, acquire the residual capacity and the instantaneous request electric quantity of group battery through the battery management unit, when the residual capacity is less than and predetermines the electric quantity, then generate the instruction signal of charging and send to vehicle control unit to confirm the charging power that the hydrogen fuel cell pile provided the group battery by fuel cell control module according to instruction signal of charging and instantaneous request electric quantity, so that the residual capacity of group battery charges to predetermine the electric quantity, thereby can charge for the group battery effectively, improved the power supply efficiency to the power supply demand of vehicle, satisfy the demand of vehicle to the electric energy. Meanwhile, the charging power provided by the hydrogen fuel cell stack to the battery pack is determined through the charging indication signal and the instantaneous request electric quantity so as to obtain a reasonable power supply strategy, effective power supply can be realized, and the service life of the hydrogen fuel cell stack is prolonged.)

1. A control system of a hydrogen fuel cell in a vehicle, characterized by comprising: a battery management unit, a battery pack, a hydrogen fuel cell unit, and a vehicle control unit;

the battery management unit is connected with the battery pack, and is used for acquiring the residual electric quantity and the instantaneous request electric quantity of the battery pack and generating a charging indication signal when the residual electric quantity of the battery pack is lower than the preset electric quantity;

the first end of the vehicle control unit is connected with a brake system of a vehicle, the second end of the vehicle control unit is respectively connected with the battery management unit and the hydrogen fuel cell unit, and the vehicle control unit is used for switching the battery pack or the hydrogen fuel cell unit to provide electric energy for the brake system of the vehicle, receiving the charging indication signal acquired by the battery management unit and transmitting the charging indication signal to the hydrogen fuel cell unit;

the hydrogen fuel cell unit comprises a fuel cell control module, a DC-DC converter and a hydrogen fuel cell stack, wherein a first end of the fuel cell control module is respectively connected with the battery management unit and the vehicle control unit, a second end of the fuel cell control module is connected with the hydrogen fuel cell stack, and the hydrogen fuel cell stack is connected with the battery pack through the DC-DC converter;

the DC-DC converter is used for converting a first voltage output by the hydrogen fuel cell stack into a second voltage suitable for the battery pack;

the fuel cell control module is used for receiving the charging indication signal transmitted by the vehicle control unit and the instant request electric quantity transmitted by the battery management unit, and is also used for determining the charging power provided by the hydrogen fuel cell stack to the battery pack according to the charging indication signal and/or the instant request electric quantity so as to charge the residual electric quantity of the battery pack to the preset electric quantity.

2. The control system of a hydrogen fuel cell in a vehicle according to claim 1, characterized in that the preset capacity is 40% -65% of a rated capacity of the battery pack.

3. The control system of a hydrogen fuel cell in a vehicle according to claim 1, characterized in that the vehicle control unit is further configured to acquire braking information of the braking system of the vehicle, and further configured to determine a real-time required power of the vehicle based on the braking information, the braking information including an accelerator pedal opening value, a brake pedal opening value, a vehicle running speed, and a motor rotation speed.

4. The control system of a hydrogen fuel cell in a vehicle according to claim 1, wherein the fuel cell control module is configured to obtain a power generation power and a power supply power of the hydrogen fuel cell stack, and further configured to determine a power up profile of the hydrogen fuel cell stack from the power generation power of the hydrogen fuel cell stack, and further configured to determine a power down profile of the hydrogen fuel cell stack from the power supply power of the hydrogen fuel cell stack; and is also used for respectively determining the power generation response time and the power supply response time of the hydrogen fuel cell stack according to the power rising curve chart and the power falling curve chart.

5. The control system of a hydrogen fuel cell in a vehicle according to claim 1, characterized in that the battery pack includes at least one power cell.

6. A control method of applying the control system of a hydrogen fuel cell in a vehicle according to claim 1, characterized by comprising the steps of:

s1, switching to a battery pack to provide electric energy for a braking system of the vehicle;

s2, acquiring the residual electric quantity and the instantaneous request electric quantity of the battery pack, and generating a charging indication signal when the residual electric quantity of the battery pack is lower than the preset electric quantity;

s3, determining the charging power provided by the hydrogen fuel cell stack to the battery pack according to the charging indication signal and/or the instant request electric quantity, so that the residual electric quantity of the battery pack is charged to the preset electric quantity;

s4, determining the output power provided to the battery pack by the hydrogen fuel cell stack according to the charging power determined in step S3, sending an operation request to a DC-DC converter, converting the first voltage output by the hydrogen fuel cell stack into a second voltage suitable for the battery pack by the DC-DC converter.

7. An electric vehicle characterized by comprising the control system of a hydrogen fuel cell in a vehicle according to any one of claims 1 to 5.

Technical Field

The application relates to the technical field of battery power supply control, in particular to a control system and method of a hydrogen fuel cell in a vehicle and an electric automobile.

Background

A hydrogen fuel cell in a vehicle includes a hydrogen fuel cell stack, which is an electrochemical cell capable of converting chemical energy in hydrogen fuel and oxygen into electrical energy based on the fuel supplied to the fuel cell, i.e., operating in the form of hydrogen, unlike a conventional battery in which electricity is generated based on chemicals already present in the battery.

Whenever the vehicle requires power, the power may be sourced from the hydrogen fuel cell or at least one battery, but no reasonable power generation strategy is currently implemented, resulting in a low service life of the hydrogen fuel cell and a low efficiency of the power supply to the power demand of the vehicle.

Publication No. CN109795374A discloses a method and a system for controlling a hydrogen fuel cell in a hybrid electric vehicle, which ensure safe and effective operation of the entire vehicle and prevent effective power supply and safe charging of a battery pack mainly supplying power to the entire vehicle by controlling a power-off strategy of the hydrogen fuel cell. However, it does not consider the instant power request of the battery generated based on the actual conditions of the accelerator pedal of the power automobile and the like during the driving process of the power automobile, and further the power supply efficiency of the power supply requirement of the vehicle is low, and the actual requirement of the vehicle cannot be met.

Disclosure of Invention

The application provides a control system and method of a hydrogen fuel cell in a vehicle and an electric automobile, which are used for solving the technical problems that the service life of the hydrogen fuel cell is short and the power supply efficiency of the power supply requirement of the vehicle is low.

In view of this, a first aspect of the present application provides a control system of a hydrogen fuel cell in a vehicle, including: a battery management unit, a battery pack, a hydrogen fuel cell unit, and a vehicle control unit;

the battery management unit is connected with the battery pack, and is used for acquiring the residual electric quantity and the instantaneous request electric quantity of the battery pack and generating a charging indication signal when the residual electric quantity of the battery pack is lower than the preset electric quantity;

the first end of the vehicle control unit is connected with a brake system of a vehicle, the second end of the vehicle control unit is respectively connected with the battery management unit and the hydrogen fuel cell unit, and the vehicle control unit is used for switching the battery pack or the hydrogen fuel cell unit to provide electric energy for the brake system of the vehicle, receiving the charging indication signal acquired by the battery management unit and transmitting the charging indication signal to the hydrogen fuel cell unit;

the hydrogen fuel cell unit comprises a fuel cell control module, a DC-DC converter and a hydrogen fuel cell stack, wherein a first end of the fuel cell control module is respectively connected with the battery management unit and the vehicle control unit, a second end of the fuel cell control module is connected with the hydrogen fuel cell stack, and the hydrogen fuel cell stack is connected with the battery pack through the DC-DC converter;

the DC-DC converter is used for converting a first voltage output by the hydrogen fuel cell stack into a second voltage suitable for the battery pack;

the fuel cell control module is used for receiving the charging indication signal transmitted by the vehicle control unit and the instant request electric quantity transmitted by the battery management unit, and is also used for determining the charging power provided by the hydrogen fuel cell stack to the battery pack according to the charging indication signal and/or the instant request electric quantity so as to charge the residual electric quantity of the battery pack to the preset electric quantity.

Preferably, the preset electric quantity is 40% -65% of the rated capacity of the battery pack.

Preferably, the vehicle control unit is further configured to obtain braking information of the braking system of the vehicle, and further configured to determine real-time required power of the vehicle based on the braking information, where the braking information includes an accelerator pedal opening value, a brake pedal opening value, a vehicle running speed, and a motor rotation speed.

Preferably, the fuel cell control module is configured to obtain power generation power and power supply power of the hydrogen fuel cell stack, determine a power rising curve of the hydrogen fuel cell stack according to the power generation power of the hydrogen fuel cell stack, and determine a power falling curve of the hydrogen fuel cell stack according to the power supply power of the hydrogen fuel cell stack; and is also used for respectively determining the power generation response time and the power supply response time of the hydrogen fuel cell stack according to the power rising curve chart and the power falling curve chart.

Preferably, the battery pack includes at least one power cell.

In a second aspect, the present invention also provides a control method of a control system for a hydrogen fuel cell applied to the above vehicle, including the steps of:

s1, switching to a battery pack to provide electric energy for a braking system of the vehicle;

s2, acquiring the residual electric quantity and the instantaneous request electric quantity of the battery pack, and generating a charging indication signal when the residual electric quantity of the battery pack is lower than the preset electric quantity;

s3, determining the charging power provided by the hydrogen fuel cell stack to the battery pack according to the charging indication signal and/or the instant request electric quantity, so that the residual electric quantity of the battery pack is charged to the preset electric quantity;

s4, determining the output power provided to the battery pack by the hydrogen fuel cell stack according to the charging power determined in step S3, sending an operation request to a DC-DC converter, converting the first voltage output by the hydrogen fuel cell stack into a second voltage suitable for the battery pack by the DC-DC converter.

In a third aspect, the invention also provides an electric vehicle including the control system of the hydrogen fuel cell in the vehicle as described above.

According to the technical scheme, the embodiment of the application has the following advantages:

the method comprises the steps of acquiring the residual electric quantity and the instantaneous request electric quantity of the battery pack through the battery management unit based on the consideration of the real-time working condition of the vehicle, generating a charging indication signal to be sent to the vehicle control unit when the residual electric quantity is lower than the preset electric quantity, and determining the charging power provided by the hydrogen fuel cell stack to the battery pack through the fuel cell control module by receiving the charging indication signal transmitted by the vehicle control unit and the instantaneous request electric quantity transmitted by the battery management unit so as to charge the residual electric quantity of the battery pack to the preset electric quantity, thereby effectively charging the battery pack, improving the power supply efficiency of the power supply requirement of the vehicle and meeting the requirement of the vehicle on electric energy.

Meanwhile, the charging power provided by the hydrogen fuel cell stack to the battery pack is determined through the charging indication signal and the instantaneous request electric quantity so as to obtain a reasonable power supply strategy, effective power supply can be realized, and the service life of the hydrogen fuel cell stack is prolonged.

Drawings

Fig. 1 is a schematic structural diagram of a control system of a hydrogen fuel cell in a vehicle according to an embodiment of the present disclosure;

fig. 2 is a flowchart of a control method of a hydrogen fuel cell in a vehicle according to an embodiment of the present application.

Detailed Description

In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the prior art, whenever the vehicle needs power, the power can be derived from the hydrogen fuel cell or at least one battery, but no reasonable power generation strategy is implemented so far, which results in a low service life of the hydrogen fuel cell and a low efficiency of power supply to the power supply demand of the vehicle.

Meanwhile, the existing control system of the hydrogen fuel cell does not consider the instant power request of the battery generated based on the actual working conditions of an accelerator pedal and the like of the power automobile in the driving process of the power automobile, so that the power supply efficiency of the power supply requirement of the vehicle is lower, and the actual requirement of the vehicle cannot be met

To this end, the present invention provides a control system of a hydrogen fuel cell in a vehicle, which, for ease of understanding, with reference to fig. 1, includes: a battery management unit 100, a battery pack 200, a hydrogen fuel cell unit 300, and a vehicle control unit 400;

the battery management unit 100 is connected with the battery pack 200, and the battery management unit 100 is configured to obtain the remaining power and the instantaneous request power of the battery pack 200, and further configured to generate a charging indication signal when the remaining power of the battery pack 200 is lower than a preset power;

it should be noted that the Battery pack 200 includes at least one power Battery, in a general example, the Battery pack 200 is formed by connecting 10 single power batteries in series, the Battery Management unit 100 is abbreviated as BMS, and is called Battery Management System in english, and it can specifically implement the following functions: (1) total voltage measurement for the entire battery pack 200; (2) measuring the pressure of the single power battery; (3) measuring a State of charge (SOC) of the battery pack 200, i.e., a battery remaining capacity; (4) the charge and discharge state of the battery pack 200 is measured so that the instantaneous request power can be obtained. The instantaneous requested electric quantity is mainly due to the total amount of instantaneous power requested by the driver of the vehicle while the electric vehicle is running, such as instantaneous power requests based on the accelerator pedal and the brake pedal of the vehicle, i.e., the throttle valve, and the actual operating conditions of the vehicle, and these power requests are reflected as the instantaneous requested electric quantity by the battery management unit 100.

When the remaining capacity of the battery pack 200 is lower than the preset capacity, it indicates that the demand of the vehicle for electric energy cannot be met, and meanwhile, if the remaining capacity of the battery pack 200 is too low, the service life of the battery pack 200 is also affected, so a charging indication signal needs to be generated for charging.

A first end of the vehicle control unit 400 is connected with the braking system 50 of the vehicle, a second end of the vehicle control unit 400 is connected with the battery management unit 100 and the hydrogen fuel cell unit 300 respectively, and the vehicle control unit 400 is used for switching the battery pack 200 or the hydrogen fuel cell unit 300 to provide electric energy for the braking system 50 of the vehicle, receiving a charging indication signal acquired by the battery management unit 100, and transmitting the charging indication signal to the hydrogen fuel cell unit 300;

the Vehicle Control Unit 400 is abbreviated as VCU, and is also called a Vehicle Control Unit.

In the general example, the vehicle control unit 400 is also configured to receive a power request from the brake system 50 of the vehicle and to send an instantaneous power request to the battery management unit 100 in the form of a CAN message, thereby obtaining an instantaneous requested power amount.

The hydrogen fuel cell unit 300 includes a fuel cell control module 301, a DC-DC converter 302, and a hydrogen fuel cell stack 303, a first end of the fuel cell control module 301 is connected to the cell management unit 100 and the vehicle control unit 400, respectively, a second end of the fuel cell control module 301 is connected to the hydrogen fuel cell stack 303, and the hydrogen fuel cell stack 303 is connected to the battery pack 200 through the DC-DC converter 302;

the Fuel cell Control module 301 is abbreviated as FCCU, and is also called Fuel cell Control Unit.

The DC-DC converter 302 is configured to convert a first voltage output from the hydrogen fuel cell stack 303 into a second voltage suitable for the battery 200;

it is understood that the DC-DC converter 302 is a DC-DC converter, and in this embodiment, the voltage output by the hydrogen fuel cell stack 303 cannot be directly applied to the battery pack 200, so in a general example, the voltage output by the hydrogen fuel cell stack 303 needs to be stepped down to obtain a voltage suitable for the battery pack 200 to normally use.

The fuel cell control module 301 is configured to receive the charge indication signal transmitted by the vehicle control unit 400 and the instant request power transmitted by the battery management unit 100, and further configured to determine the charging power provided by the hydrogen fuel cell stack 303 to the battery pack 200 according to the charge indication signal and/or the instant request power, so as to charge the remaining power of the battery pack 200 to a preset power.

It should be noted that, after the fuel cell control module 301 receives the charging indication signal, it may initiate a power supply request to the hydrogen fuel cell stack 303, and at the same time, the charging indication signal includes the remaining power and the preset power of the battery pack 200, so the fuel cell control module 301 may determine the charging power provided by the hydrogen fuel cell stack 303 to the battery pack 200 according to the charging indication signal and/or the instantaneous request power in the following two cases: 1) in the case where there is an instantaneous request power amount, determining the charging power supplied to the battery pack 200 by the hydrogen fuel cell stack 303 based on the sum of the remaining power amount of the battery pack 200 and the instantaneous request power amount; 2) in the case where there is no instantaneously requested charge amount (i.e., 0), the charging power supplied to the battery stack 200 by the hydrogen fuel cell stack 303 is determined based on the remaining charge amount of the battery stack 200. The remaining capacity of the battery pack 200 can be charged to a preset capacity by determining the charging power through the above two modes, so that the normal use of the battery pack 200 is ensured, and the electric energy required by the vehicle is satisfied.

In the embodiment, based on the consideration of the real-time operating condition of the vehicle, the remaining power and the instantaneous request power of the battery pack 200 are obtained by the battery management unit 100, when the remaining power is lower than the preset power, the charging indication signal is generated and sent to the vehicle control unit 400, and the fuel cell control module 301 determines the charging power provided by the hydrogen fuel cell stack 303 to the battery pack 200 by receiving the charging indication signal transmitted by the vehicle control unit 400 and the instantaneous request power transmitted by the battery management unit 100, so that the remaining power of the battery pack 200 is charged to the preset power, thereby effectively charging the battery pack 200, improving the power supply efficiency of the power supply requirement of the vehicle, and meeting the requirement of the vehicle on electric energy.

Meanwhile, the charging power provided by the hydrogen fuel cell stack 303 to the battery pack 200 is determined through the charging indication signal and the instantaneous request electric quantity to obtain a reasonable power supply strategy, so that effective power supply can be realized, and the service life of the hydrogen fuel cell stack 303 is prolonged.

In addition, the present embodiment physically separates the fuel cell control module 301 from the vehicle control unit 400, and can operate independently of each other, thereby ensuring that the fuel cell control module 301 safely controls the hydrogen fuel cell.

Further, the preset capacity is 40% -65% of the rated capacity of the battery pack 200.

Note that, in a general example, the preset capacity is 50% of the rated capacity of the battery pack 200.

Further, the vehicle control unit 400 is further configured to obtain braking information of the braking system 50 of the vehicle, and further configured to determine real-time required power of the vehicle based on the braking information, where the braking information includes an accelerator pedal opening value, a brake pedal opening value, a vehicle running speed, and a motor rotation speed.

It should be noted that after the accelerator pedal opening value, the brake pedal opening value, the vehicle running speed and the motor rotation speed in the braking system 50 of the vehicle are obtained, the driving torque of the vehicle can be obtained according to the accelerator pedal opening value and the vehicle running speed (obtained by looking up a table from the vehicle speed), meanwhile, the motor braking torque under the braking condition is obtained according to the brake pedal opening value, the driving torque of the vehicle and the motor braking torque are added to obtain the required torque of the driver, and then the real-time required power of the vehicle is obtained by calculating the required torque of the driver and the motor rotation speed, and the specific calculation formula is as follows:

P＝T×N/9550

where P represents the real-time required power of the vehicle, T represents the driver's required torque, and N represents the motor rotation speed.

By obtaining the real-time required power, the energy distribution strategy between the hydrogen fuel cell stack 303 and the battery pack 200 can be referenced based on the real-time required power, thereby providing the service life of the hydrogen fuel cell stack 303 and the battery pack 200.

Further, the fuel cell control module 301 is configured to obtain the power generation power and the power supply power of the hydrogen fuel cell stack 303, determine a power rising curve of the hydrogen fuel cell stack 303 according to the power generation power of the hydrogen fuel cell stack 303, and determine a power falling curve of the hydrogen fuel cell stack 303 according to the power supply power of the hydrogen fuel cell stack 303; and also for determining the power generation response time and the power supply response time of the hydrogen fuel cell stack 303 from the power-up graph and the power-down graph, respectively.

It should be noted that the power-up curve chart and the power-down curve chart have a time sequence, wherein the power-up curve chart and the power-down curve chart can indicate the power distribution ratio between the hydrogen fuel cell stack 303 and the cell group 200, and the actually-delivered power of the hydrogen fuel cell stack 303 changing with time can be obtained through the power-up curve chart and the power-down curve chart, so that the service life of the hydrogen fuel cell stack 303 can be improved according to the set power delivery strategy.

Specifically, assuming that the battery pack 200 has a charging capacity of 0 to 100%, the hydrogen fuel cell stack 303 selects the maximum power supply when the remaining capacity of the battery pack 200 is 0 to 20%;

when the remaining capacity of the battery pack 200 is more than 80%, the hydrogen fuel cell stack 303 is selectively turned off, and power supply to the battery pack 200 is suspended;

when the remaining capacity of the battery pack 200 is 20-80%, the interval can be divided into a small power interval, a medium power interval and a high power interval, for example: 20-40% of the power range is small power range, 40-60% of the power range is medium power range, and 60-80% of the power range is large power range. The hydrogen fuel cell stack 303 can select the optimal power supply power and power generation power according to the above intervals, so that the remaining power of the battery pack 200 can reach the preset power, that is, the power demand of the whole vehicle and the instantaneous power demand of the vehicle during driving can be met, and meanwhile, the balance between the power supply power and the power generation power can be realized, so that the hydrogen fuel cell unit 300 can work in a high-efficiency area under the condition of meeting the power demand of the whole vehicle, the cruising range of the hydrogen fuel cell vehicle is increased, the power adjustment frequency of the hydrogen fuel cell unit 300 is reduced, and the service life of the hydrogen fuel cell unit 300 is prolonged.

Meanwhile, by setting the target power, in the power-up graph and the power-down graph, the response time from 0 to the target power can be obtained, and the response time can also be one of the characterizing quantities of the service life of the hydrogen fuel cell stack 303.

The following is a control method of a control system of a hydrogen fuel cell in a vehicle to which the present embodiment is applied, and for convenience of understanding, referring to fig. 2, the control method of the present embodiment includes the steps of:

s1, switching to a battery pack to provide electric energy for a braking system of the vehicle;

s2, acquiring the residual electric quantity and the instantaneous request electric quantity of the battery pack, and generating a charging indication signal when the residual electric quantity of the battery pack is lower than the preset electric quantity;

s3, determining the charging power provided by the hydrogen fuel cell stack to the battery pack according to the charging indication signal and/or the instant request electric quantity, so that the residual electric quantity of the battery pack is charged to a preset electric quantity;

s4, determining the output power provided to the battery pack by the hydrogen fuel cell stack according to the charging power determined in step S3, sending an operation request to the DC-DC converter, and converting the first voltage output from the hydrogen fuel cell stack into a second voltage suitable for the battery pack by the DC-DC converter.

It should be noted that, the charging power provided by the hydrogen fuel cell stack to the battery pack is determined according to the charging indication signal and/or the instantaneous request power, which has the following two cases: 1) under the condition that the instantaneous request electric quantity exists, determining the charging power provided by the hydrogen fuel cell stack to the battery pack according to the sum of the residual electric quantity of the battery pack and the instantaneous request electric quantity; 2) in the case where there is no instantaneous request charge (i.e., 0), the charging power supplied to the battery pack by the hydrogen fuel cell stack is determined based on the remaining charge of the battery pack. The residual electric quantity of the battery pack can be charged to the preset electric quantity by the two charging power determining modes, so that the normal use of the battery pack is ensured, and the electric energy required by a vehicle is met.

In the embodiment, based on the consideration of the real-time working condition of the vehicle, the remaining capacity and the instantaneous request capacity of the battery pack are obtained, and the charging power provided by the hydrogen fuel cell stack to the battery pack is determined according to the charging indication signal and the instantaneous request capacity, so that the remaining capacity of the battery pack is charged to the preset capacity, the battery pack can be effectively charged, the power supply efficiency of the power supply requirement of the vehicle is improved, and the requirement of the vehicle on electric energy is met.

Meanwhile, the charging power provided by the hydrogen fuel cell stack to the battery pack is determined through the charging indication signal and the instantaneous request electric quantity so as to obtain a reasonable power supply strategy, effective power supply can be realized, and the service life of the hydrogen fuel cell stack is prolonged.

The invention also provides an electric automobile comprising the control system of the hydrogen fuel cell in the vehicle as in the above embodiment.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.