阅读说明：本技术 一种燃料电池汽车能量分配方法及系统 (Fuel cell automobile energy distribution method and system ) 是由 王明锐 徐李瑶 马义 李学锐 杨耿 于 2021-08-24 设计创作，主要内容包括：本发明公开了一种燃料电池汽车能量分配方法及系统,涉及燃料电池汽车技术领域,所述方法在根据当前车速以及油门踏板开度或当前车速以及刹车踏板开度计算整车需求功率的过程中,未将车速划分为多个区间,通过前馈加PID反馈控制得到整车需求功率,动态响应性能更好且可保持较高的稳定性。(The invention discloses a fuel cell automobile energy distribution method and a system, and relates to the technical field of fuel cell automobiles.)

1. A fuel cell vehicle energy distribution method, comprising:

judging whether an accelerator pedal state signal and a brake pedal state signal of the fuel cell automobile are received or not;

if one of the accelerator pedal state signal and the brake pedal state signal is received, taking the received state signal as a known state signal, and acquiring the pedal opening and the current vehicle speed in the known state signal;

acquiring first required power corresponding to the current speed, second required power corresponding to the pedal opening degree and actual output power of the whole fuel cell automobile;

performing first PID control on the first required power and the actual output power of the whole vehicle to obtain third required power, and performing second PID control on the second required power and the actual output power of the whole vehicle to obtain fourth required power;

weighting and summing the third required power and the fourth required power to obtain the total vehicle required power of the fuel cell vehicle;

and determining the output power of the fuel cell and the output power of the power cell according to the required power of the whole vehicle.

2. The fuel cell vehicle energy distribution method of claim 1, wherein the determining the output power of the fuel cell and the output power of the power cell according to the vehicle demand power comprises:

acquiring the SOC of the power battery;

and determining the output power of the fuel cell and the output power of the power battery according to the SOC and the required power of the whole vehicle.

3. The fuel cell vehicle energy distribution method according to claim 1, wherein after determining whether the accelerator pedal state signal and the brake pedal state signal of the fuel cell vehicle are received and before determining the output power of the fuel cell and the output power of the power cell according to the vehicle-finished required power, the method further comprises:

and if the accelerator pedal state signal and the brake pedal state signal are received, setting the required power of the whole vehicle to be zero.

4. The fuel cell vehicle energy distribution method according to claim 1, wherein after determining whether the accelerator pedal state signal and the brake pedal state signal of the fuel cell vehicle are received and before determining the output power of the fuel cell and the output power of the power cell according to the vehicle-finished required power, the method further comprises:

and if the accelerator pedal state signal and the brake pedal state signal are not received, determining the required power of the whole vehicle as the required power obtained by the last calculation.

5. The fuel cell vehicle energy distribution method according to claim 2, wherein the determining the output power of the fuel cell and the output power of the power cell according to the SOC and the vehicle required power comprises:

acquiring the maximum value and the minimum value of the state of charge of the power battery and the rated output power and the idle power of the fuel battery;

and determining the output power of the fuel cell and the output power of the power cell according to the SOC, the required power of the whole vehicle, the maximum value of the state of charge, the minimum value of the state of charge, the rated output power and the idle power.

6. The fuel cell vehicle energy distribution method of claim 5, wherein determining the output power of the fuel cell and the output power of the power cell according to the SOC, the vehicle power demand, the maximum state of charge, the minimum state of charge, the rated output power, and the idle power comprises:

if the required power of the whole vehicle is greater than or equal to the rated output power and the SOC is greater than or equal to the maximum value of the state of charge, determining the output power of the fuel cell as the rated output power and the output power of the power cell as the rated discharge power of the power cell;

if the required power of the whole vehicle is greater than or equal to the idle power and smaller than the rated output power, and the SOC is greater than or equal to the maximum value of the state of charge, determining the output power of the power battery as the rated discharge power, and comparing the required power of the whole vehicle with the rated discharge power; if the required power of the whole vehicle is not greater than the rated discharge power, the output power of the fuel cell is determined as the idle power; if the required power of the whole vehicle is larger than the rated discharge power, determining the output power of the fuel cell as the difference value of the required power of the whole vehicle minus the rated discharge power;

if the required power of the whole vehicle is greater than or equal to zero and smaller than the idle power and the SOC is greater than or equal to the maximum state of charge, determining the output power of the fuel cell as the idle power and the output power of the power cell as the rated discharge power;

if the finished automobile required power is greater than or equal to the rated output power, the SOC is greater than or equal to the minimum state of charge and smaller than the maximum state of charge, the output power of the fuel cell is determined as the rated output power, and the output power of the power cell is determined as the difference value of the finished automobile required power minus the rated output power;

if the required power of the whole vehicle is greater than or equal to the idle power and smaller than the rated output power, and the SOC is greater than or equal to the minimum state of charge and smaller than the maximum state of charge, determining the output power of the fuel cell and the output power of the power cell according to a proportion;

if the required power of the whole vehicle is greater than or equal to zero and smaller than the idle power, and the SOC is greater than or equal to the minimum state of charge and smaller than the maximum state of charge, determining the output power of the fuel cell as the idle power, and determining the output power of the power cell as the difference value of the required power of the whole vehicle minus the idle power;

if the required power of the whole vehicle is greater than or equal to the rated output power and the SOC is smaller than the minimum value of the state of charge, the output power of the fuel cell is determined as the rated output power, and the output power of the power cell is determined as the negative rated discharge power;

if the finished automobile required power is greater than or equal to the idle power and smaller than the rated output power, and the SOC is smaller than the minimum value of the state of charge, determining the output power of the power battery as the negative rated discharge power, and comparing the sum of the finished automobile required power plus the rated discharge power with the rated output power; if the sum of the finished automobile required power and the rated discharge power is larger than the rated output power, the output power of the fuel cell is determined as the rated output power; if the sum of the finished automobile required power and the rated discharge power is not greater than the rated output power, the output power of the fuel cell is determined as the sum of the rated discharge power and the finished automobile required power;

if the required power of the whole vehicle is larger than or equal to zero and smaller than the idle power, and the SOC is smaller than the minimum value of the state of charge, the output power of the fuel cell is determined as the idle power, and the output power of the power cell is determined as the negative rated discharge power.

7. The fuel cell vehicle energy distribution method of claim 6, wherein the determining the output power of the fuel cell and the output power of the power cell according to the SOC, the vehicle required power, the maximum state of charge, the minimum state of charge, the rated output power, and the idle power further comprises:

if the required power of the whole vehicle is less than zero and the SOC is more than or equal to the maximum value of the state of charge, setting the output power of the fuel cell and the output power of the power cell to be zero;

if the required power of the whole vehicle is less than zero, and the SOC is more than or equal to the minimum state of charge and less than the maximum state of charge, setting the output power of the fuel cell to be zero, and acquiring the smaller value of the absolute value of the required power of the whole vehicle and the rated discharge power; setting the output power of the power battery to the negative smaller value before the SOC reaches the maximum value of the state of charge;

if the required power of the whole vehicle is smaller than zero and the SOC is smaller than the minimum value of the state of charge, the output power of the fuel cell is set to be zero, and the output power of the power cell is set to be negative rated discharge power before the SOC reaches the minimum value of the state of charge.

8. A fuel cell automotive energy distribution system, comprising:

the signal judgment module is used for judging whether an accelerator pedal state signal and a brake pedal state signal of the fuel cell automobile are received or not;

the parameter acquisition module is used for taking the received state signal as a known state signal and acquiring the pedal opening and the current vehicle speed in the known state signal if one of the accelerator pedal state signal and the brake pedal state signal is received;

the power acquisition module is used for acquiring first required power corresponding to the current speed, second required power corresponding to the pedal opening degree and actual output power of the whole fuel cell automobile;

the PID control module is used for carrying out first PID control on the first required power and the actual output power of the whole vehicle to obtain third required power, and carrying out second PID control on the second required power and the actual output power of the whole vehicle to obtain fourth required power;

the power calculation module is used for weighting and summing the third required power and the fourth required power to obtain the total vehicle required power of the fuel cell vehicle;

and the power distribution module is used for determining the output power of the fuel cell and the output power of the power cell according to the required power of the whole vehicle.

9. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor implements the fuel cell vehicle energy distribution method according to any one of claims 1 to 7 when executing the program.

10. A computer-readable storage medium, wherein the computer-readable storage medium, when executed, implements the fuel cell vehicle energy distribution method of any of claims 1-7.

Technical Field

The invention relates to the technical field of fuel cell automobiles, in particular to a fuel cell automobile energy distribution method and system.

Background

The power demand sources of the whole fuel cell automobile generally comprise the current accessory consumption and the current torque demand of the whole automobile, the energy distribution of the fuel cell automobile is mainly to distribute the energy output of the fuel cell and the power cell according to the power demand of the whole automobile so that the SOC (state of charge) of the power cell is in a reasonable interval, and the premise of the energy distribution is to determine the required power of the whole automobile.

At present, the required power of the whole vehicle can be calculated through the opening degrees of an accelerator pedal and a brake pedal and the vehicle speed, but the traditional method divides the vehicle speed into a plurality of intervals after receiving an accelerator pedal state signal or a brake pedal state signal, each interval corresponds to different required power of the whole vehicle, and the dynamic response difference of the required power of the whole vehicle is calculated.

Disclosure of Invention

The embodiment of the invention provides a fuel cell automobile energy distribution method and system, and solves the technical problem that in the prior art, the dynamic response of the power required by the whole automobile is poor when the power required by the whole automobile is calculated according to the opening degrees of an accelerator pedal and a brake pedal and the automobile speed.

In one aspect, the present invention provides the following technical solutions through an embodiment of the present invention:

a fuel cell vehicle energy distribution method comprising:

judging whether an accelerator pedal state signal and a brake pedal state signal of the fuel cell automobile are received or not;

if one of the accelerator pedal state signal and the brake pedal state signal is received, taking the received state signal as a known state signal, and acquiring the pedal opening and the current vehicle speed in the known state signal;

acquiring first required power corresponding to the current speed, second required power corresponding to the pedal opening degree and actual output power of the whole fuel cell automobile;

performing first PID control on the first required power and the actual output power of the whole vehicle to obtain third required power, and performing second PID control on the second required power and the actual output power of the whole vehicle to obtain fourth required power;

weighting and summing the third required power and the fourth required power to obtain the total vehicle required power of the fuel cell vehicle;

and determining the output power of the fuel cell and the output power of the power cell according to the required power of the whole vehicle.

Preferably, the determining the output power of the fuel cell and the output power of the power cell according to the power required by the whole vehicle includes:

acquiring the SOC of the power battery;

and determining the output power of the fuel cell and the output power of the power battery according to the SOC and the required power of the whole vehicle.

Preferably, after determining whether an accelerator pedal state signal and a brake pedal state signal of the fuel cell vehicle are received, before determining the output power of the fuel cell and the output power of the power cell according to the vehicle demand power, the method further includes:

and if the accelerator pedal state signal and the brake pedal state signal are received, setting the required power of the whole vehicle to be zero.

Preferably, after determining whether an accelerator pedal state signal and a brake pedal state signal of the fuel cell vehicle are received, before determining the output power of the fuel cell and the output power of the power cell according to the vehicle demand power, the method further includes:

and if the accelerator pedal state signal and the brake pedal state signal are not received, determining the required power of the whole vehicle as the required power obtained by the last calculation.

Preferably, the determining the output power of the fuel cell and the output power of the power battery according to the SOC and the required power of the whole vehicle includes:

acquiring the maximum value and the minimum value of the state of charge of the power battery and the rated output power and the idle power of the fuel battery;

and determining the output power of the fuel cell and the output power of the power cell according to the SOC, the required power of the whole vehicle, the maximum value of the state of charge, the minimum value of the state of charge, the rated output power and the idle power.

Preferably, the determining the output power of the fuel cell and the output power of the power cell according to the SOC, the power demand of the entire vehicle, the maximum value of the state of charge, the minimum value of the state of charge, the rated output power, and the idle power includes:

if the required power of the whole vehicle is greater than or equal to the rated output power and the SOC is greater than or equal to the maximum value of the state of charge, determining the output power of the fuel cell as the rated output power and the output power of the power cell as the rated discharge power of the power cell;

if the required power of the whole vehicle is greater than or equal to the idle power and smaller than the rated output power, and the SOC is greater than or equal to the maximum value of the state of charge, determining the output power of the power battery as the rated discharge power, and comparing the required power of the whole vehicle with the rated discharge power; if the required power of the whole vehicle is not greater than the rated discharge power, the output power of the fuel cell is determined as the idle power; if the required power of the whole vehicle is larger than the rated discharge power, determining the output power of the fuel cell as the difference value of the required power of the whole vehicle minus the rated discharge power;

if the required power of the whole vehicle is greater than or equal to zero and smaller than the idle power and the SOC is greater than or equal to the maximum state of charge, determining the output power of the fuel cell as the idle power and the output power of the power cell as the rated discharge power;

if the finished automobile required power is greater than or equal to the rated output power, the SOC is greater than or equal to the minimum state of charge and smaller than the maximum state of charge, the output power of the fuel cell is determined as the rated output power, and the output power of the power cell is determined as the difference value of the finished automobile required power minus the rated output power;

if the required power of the whole vehicle is greater than or equal to the idle power and smaller than the rated output power, and the SOC is greater than or equal to the minimum state of charge and smaller than the maximum state of charge, determining the output power of the fuel cell and the output power of the power cell according to a proportion;

if the required power of the whole vehicle is greater than or equal to zero and smaller than the idle power, and the SOC is greater than or equal to the minimum state of charge and smaller than the maximum state of charge, determining the output power of the fuel cell as the idle power, and determining the output power of the power cell as the difference value of the required power of the whole vehicle minus the idle power;

if the required power of the whole vehicle is greater than or equal to the rated output power and the SOC is smaller than the minimum value of the state of charge, the output power of the fuel cell is determined as the rated output power, and the output power of the power cell is determined as the negative rated discharge power;

if the finished automobile required power is greater than or equal to the idle power and smaller than the rated output power, and the SOC is smaller than the minimum value of the state of charge, determining the output power of the power battery as the negative rated discharge power, and comparing the sum of the finished automobile required power plus the rated discharge power with the rated output power; if the sum of the finished automobile required power and the rated discharge power is larger than the rated output power, the output power of the fuel cell is determined as the rated output power; if the sum of the finished automobile required power and the rated discharge power is not greater than the rated output power, the output power of the fuel cell is determined as the sum of the rated discharge power and the finished automobile required power;

if the required power of the whole vehicle is larger than or equal to zero and smaller than the idle power, and the SOC is smaller than the minimum value of the state of charge, the output power of the fuel cell is determined as the idle power, and the output power of the power cell is determined as the negative rated discharge power.

Preferably, the determining the output power of the fuel cell and the output power of the power cell according to the SOC, the power demand of the entire vehicle, the maximum value of the state of charge, the minimum value of the state of charge, the rated output power, and the idle power further includes:

if the required power of the whole vehicle is less than zero and the SOC is more than or equal to the maximum value of the state of charge, setting the output power of the fuel cell and the output power of the power cell to be zero;

if the required power of the whole vehicle is less than zero, and the SOC is more than or equal to the minimum state of charge and less than the maximum state of charge, setting the output power of the fuel cell to be zero, and acquiring the smaller value of the absolute value of the required power of the whole vehicle and the rated discharge power; setting the output power of the power battery to the negative smaller value before the SOC reaches the maximum value of the state of charge;

if the required power of the whole vehicle is smaller than zero and the SOC is smaller than the minimum value of the state of charge, the output power of the fuel cell is set to be zero, and the output power of the power cell is set to be negative rated discharge power before the SOC reaches the minimum value of the state of charge.

On the other hand, the invention also provides the following technical scheme:

a fuel cell automotive energy distribution system comprising:

the signal judgment module is used for judging whether an accelerator pedal state signal and a brake pedal state signal of the fuel cell automobile are received or not;

the parameter acquisition module is used for taking the received state signal as a known state signal and acquiring the pedal opening and the current vehicle speed in the known state signal if one of the accelerator pedal state signal and the brake pedal state signal is received;

the power acquisition module is used for acquiring first required power corresponding to the current speed, second required power corresponding to the pedal opening degree and actual output power of the whole fuel cell automobile;

the PID control module is used for carrying out first PID control on the first required power and the actual output power of the whole vehicle to obtain third required power, and carrying out second PID control on the second required power and the actual output power of the whole vehicle to obtain fourth required power;

the power calculation module is used for weighting and summing the third required power and the fourth required power to obtain the total vehicle required power of the fuel cell vehicle;

and the power distribution module is used for determining the output power of the fuel cell and the output power of the power cell according to the required power of the whole vehicle.

On the other hand, the invention also provides the following technical scheme:

an electronic device comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor executes the program to realize the energy distribution method of any fuel cell automobile.

On the other hand, the invention also provides the following technical scheme:

a computer readable storage medium which when executed implements any of the fuel cell vehicle energy distribution methods described above.

One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

in the embodiment of the invention, whether an accelerator pedal state signal and a brake pedal state signal of a fuel cell automobile are received or not is judged; if one of the accelerator pedal state signal and the brake pedal state signal is received, the received state signal is used as a known state signal, and the pedal opening degree and the current vehicle speed in the known state signal are obtained; acquiring first required power corresponding to the current speed, second required power corresponding to the pedal opening degree and the actual output power of the whole fuel cell automobile; performing first PID control on the first required power and the actual output power of the whole vehicle to obtain third required power, and performing second PID control on the second required power and the actual output power of the whole vehicle to obtain fourth required power; carrying out weighted summation on the third required power and the fourth required power to obtain the total vehicle required power of the fuel cell vehicle; and determining the output power of the fuel cell and the output power of the power battery according to the required power of the whole vehicle. In the process of calculating the required power of the whole vehicle according to the current vehicle speed and the opening degree of an accelerator pedal or the current vehicle speed and the opening degree of a brake pedal, the vehicle speed is not divided into a plurality of intervals, and the required power of the whole vehicle is obtained through feedforward and PID feedback control, so that the dynamic response performance is better, and higher stability can be kept.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

FIG. 1 is a flow chart of a fuel cell vehicle energy distribution method according to an embodiment of the present invention;

fig. 2 is a block diagram of a fuel cell vehicle energy distribution system according to an embodiment of the present invention.

Description of reference numerals:

601-signal judgment module; 602-a parameter acquisition module; 603-a power acquisition module; 604-PID control module; 605-a power calculation module; 606-power distribution module.

Detailed Description

The embodiment of the invention provides a fuel cell automobile energy distribution method and system, and solves the technical problem that in the prior art, the dynamic response of the power required by the whole automobile is poor when the power required by the whole automobile is calculated according to the opening degrees of an accelerator pedal and a brake pedal and the automobile speed.

In order to better understand the technical scheme of the invention, the technical scheme of the invention is described in detail in the following with the accompanying drawings and specific embodiments.

First, it is stated that the term "and/or" appearing herein is merely one type of associative relationship that describes an associated object, meaning that three types of relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

As shown in fig. 1, the fuel cell vehicle energy distribution method of the embodiment includes:

step S10, judging whether an accelerator pedal state signal and a brake pedal state signal of the fuel cell automobile are received;

step S20, if one of the accelerator pedal state signal and the brake pedal state signal is received, the received state signal is used as a known state signal, and the pedal opening and the current vehicle speed in the known state signal are obtained;

step S21, acquiring a first required power corresponding to the current speed, a second required power corresponding to the pedal opening and the actual output power of the whole fuel cell automobile;

step S22, performing first PID control on the first required power and the actual output power of the whole vehicle to obtain third required power, and performing second PID control on the second required power and the actual output power of the whole vehicle to obtain fourth required power;

step S23, carrying out weighted summation on the third required power and the fourth required power to obtain the total vehicle required power of the fuel cell vehicle;

and step S30, determining the output power of the fuel cell and the output power of the power cell according to the required power of the whole vehicle.

In step S20, the reception of either the accelerator pedal state signal or the brake pedal state signal indicates that only the accelerator pedal state signal or only the brake pedal state signal is received. If the accelerator pedal state signal is received only, the known state signal is the accelerator pedal state signal, and the pedal opening in the known state signal is the accelerator pedal opening in the accelerator pedal state signal; if only the brake pedal state signal is received, the known state signal is the brake pedal state signal, and the pedal opening degree in the known state signal is the brake pedal opening degree in the brake pedal state signal.

In step S21, a table of one-to-one correspondence between vehicle speed and first required power may be constructed according to the test calibration, and a table of one-to-one correspondence between accelerator pedal opening or brake pedal opening and second required power may be constructed, and these two tables may be adjusted.

In step S22, the third required power is the required power of the entire vehicle obtained by considering the vehicle speed, and the fourth required power is the required power of the entire vehicle obtained by considering the accelerator pedal opening or the brake pedal opening. And the input of the PID control considers the actual output power of the whole vehicle, so that the third required power and the fourth required power are both close to the actual output power of the whole vehicle.

In step S23, performing weighted summation on the third required power and the fourth required power to obtain the required power of the entire vehicle, which may include:psp is the required power of the whole vehicle, Wp is the weight of fourth required power, Psp _ ap is the fourth required power, Wv is the third required power, Psp _ vp is the third required power, and Wp and Wv can be adjusted according to tests. Therefore, the required power of the whole vehicle can be calculated according to the current vehicle speed and the opening degree of the accelerator pedal or the required power of the whole vehicle can be calculated according to the current vehicle speed and the opening degree of the brake pedal according to the steps S341 to S343, and the obtained required power of the whole vehicle is more reasonable.

In the process of calculating the required power of the whole vehicle according to the current vehicle speed and the opening degree of an accelerator pedal or the current vehicle speed and the opening degree of a brake pedal, the vehicle speed is not divided into a plurality of intervals, the required power of the whole vehicle is obtained through feedforward and PID feedback control, the dynamic response performance is better, and higher stability can be kept.

In the embodiment, the required power of the whole automobile can be calculated only according to the opening degree of the accelerator pedal, if the required power of the whole automobile is in direct proportion to the opening degree of the accelerator pedal, when the speed of the automobile is high, if the stepping depth of the accelerator pedal is 80%, the required power of the whole automobile determined only according to the opening degree of the accelerator pedal is increased, the speed of the automobile is further increased, and safety risks are increased, which indicates that the required power of the whole automobile determined only according to the opening degree of the accelerator pedal is unreasonable. The current speed is considered when the power demand of the whole automobile is determined, the condition that the speed is further improved due to the power demand of the whole automobile when the speed of the automobile is fast is avoided, and safety risks are reduced.

After the power required by the whole vehicle is determined, the output power of the fuel cell and the output power of the power cell are determined according to the SOC of the power cell and the power requirement of the whole vehicle, so that the SOC of the power cell is in a reasonable interval. For this, step S30 includes: acquiring the SOC of the power battery; and determining the output power of the fuel cell and the output power of the power battery according to the SOC of the power battery and the required power of the whole vehicle.

It is easy to think that the determination result of step S10 includes two types of situations, namely, receiving the accelerator pedal state signal and the brake pedal state signal at the same time, receiving neither the accelerator pedal state signal nor the brake pedal state signal, in addition to receiving only the accelerator pedal state signal or receiving only the accelerator pedal state signal, and determining the power required by the entire vehicle under the two situations. For this reason, after step S10 and before step S30, the fuel cell vehicle power distribution method of the present embodiment further includes:

if an accelerator pedal state signal and a brake pedal state signal are received, setting the required power of the whole vehicle to be zero;

and if the accelerator pedal state signal and the brake pedal state signal are not received, determining the required power of the whole vehicle as the required power obtained by the last calculation.

In the driving process of an automobile, the situation that a driver tramples an accelerator pedal and a brake pedal simultaneously through misoperation exists, the driving intention of the driver is uncertain, reasonable required power of the whole automobile cannot be given through a traditional method under the situation, the driving state of the automobile can be changed towards the direction opposite to the driving intention, and potential safety hazards exist. And if the accelerator pedal state signal and the brake pedal state signal are received, the driver is represented to simultaneously tread the accelerator pedal and the brake pedal. In the embodiment, under the condition that a driver simultaneously steps on an accelerator pedal and a brake pedal, the required power of the whole fuel cell automobile is set to be zero, namely the output power is basically not provided any more, so that the driving state of the automobile is basically not changed, the driving state of the automobile is not changed towards the direction opposite to the driving intention of the driver, and the potential safety hazard caused by unreasonable determination of the required power of the whole automobile is eliminated.

To the condition that accelerator pedal state signal and brake pedal state signal are not received, because the driver neither tramples accelerator pedal nor brake pedal at this moment, the driving intention of the driver is unknown, and the sudden change of the whole vehicle demand power may cause potential safety hazard. The required power of the whole vehicle is generally determined periodically, and the required power obtained by the last calculation can be the required power of the whole vehicle determined in the last period.

In this embodiment, determining the output power of the fuel cell and the output power of the power battery according to the SOC of the power battery and the required power of the entire vehicle includes: acquiring the maximum value and the minimum value of the state of charge of the power battery and the rated output power and the idle power of the fuel battery; and determining the output power of the fuel cell and the output power of the power cell according to the SOC, the required power of the whole vehicle, the maximum value of the state of charge, the minimum value of the state of charge, the rated output power and the idle power.

Specifically, determining the output power of the fuel cell and the output power of the power cell according to the SOC, the required power of the whole vehicle, the maximum value of the state of charge, the minimum value of the state of charge, the rated output power and the idle power comprises the following steps:

if the required power of the whole vehicle is greater than or equal to the rated output power and the SOC is greater than or equal to the maximum state of charge, the power battery needs to discharge at the moment, and the fuel battery and the power battery need to output power simultaneously, the output power of the fuel battery is set as the rated output power, the output power of the power battery is set as the rated discharge power of the power battery, and the actual output power of the whole vehicle is the sum of the rated output power and the rated discharge power;

if the required power of the whole vehicle is greater than or equal to the idle power of the fuel cell and smaller than the rated output power, and the SOC is greater than or equal to the maximum value of the state of charge, the power battery needs to discharge at the moment, the output power of the power battery is determined as the rated discharge power, and the required power of the whole vehicle and the rated discharge power are compared; if the required power of the whole vehicle is not more than the rated discharge power, the required power of the whole vehicle can be met only by the output power of the power battery, the output power of the fuel battery is determined as the idle power of the fuel battery, and the actual output power of the whole vehicle is the sum of the idle power of the fuel battery and the rated discharge power; if the required power of the whole vehicle is greater than the rated discharge power, the required power of the whole vehicle cannot be met only by the output power of the power battery, and the fuel battery is required to output power, the output power of the fuel battery is determined as the difference value of the required power of the whole vehicle minus the rated discharge power, and the actual output power of the whole vehicle is the required power of the whole vehicle;

if the required power of the whole vehicle is greater than or equal to zero and smaller than the idle power and the SOC is greater than or equal to the maximum state of charge, and the power battery needs to discharge at the moment, the output power of the fuel battery is determined as the idle power, the output power of the power battery is determined as the rated discharge power, and the actual output power of the whole vehicle is the sum of the idle power and the rated discharge power;

if the required power of the whole vehicle is greater than or equal to the rated output power, the SOC is greater than or equal to the minimum state of charge and is less than the maximum state of charge, the SOC of the power battery is in a reasonable interval, the fuel battery and the power battery are required to output power simultaneously, the output power of the fuel battery is determined as the rated output power, the output power of the power battery is determined as the difference value of the required power of the whole vehicle minus the rated output power, and the actual output power of the whole vehicle is the required power of the whole vehicle;

if the required power of the whole vehicle is greater than or equal to the idle power and smaller than the rated output power, and the SOC is greater than or equal to the minimum value of the state of charge and smaller than the maximum value of the state of charge, indicating that the SOC of the power battery is in a reasonable interval, determining the output power of the fuel battery and the output power of the power battery according to a proportion, specifically comprising Pfc (Prate/(Prate + Pdivch) (+) Psp, and Pbat (Pdif/(Prate + Pdifch) (+) Psp), wherein Pfc is the output power of the fuel battery, Prate is the rated output power of the fuel battery, Pdifh is the rated discharge power of the power battery, Psp is the required power of the whole vehicle, Pbat is the output power of the power battery, and the actual output power of the whole vehicle is the required power of the whole vehicle at this time;

if the required power of the whole vehicle is greater than or equal to zero and smaller than the idle power, and the SOC is greater than or equal to the minimum value of the state of charge and smaller than the maximum value of the state of charge, indicating that the SOC of the power battery is in a reasonable interval, determining the output power of the fuel battery as the idle power, and determining the output power of the power battery as the difference between the required power of the whole vehicle and the idle power, wherein the difference between the required power of the whole vehicle and the idle power is less than zero because only the idle power can meet the required power of the whole vehicle, and the difference between the required power of the whole vehicle and the idle power is less than zero at the moment;

if the required power of the whole vehicle is greater than or equal to the rated output power and the SOC is less than the minimum value of the state of charge, at the moment, the power battery needs to be charged, the output power of the fuel battery is determined as the rated output power, the output power of the power battery is determined as negative rated discharge power, namely, the power battery is charged by taking the rated discharge power as the charging power, and as the output power of the fuel battery needs to preferentially meet the charging of the power battery, the actual output power of the whole vehicle is the difference value of the rated output power of the fuel battery minus the rated discharge power of the power battery and is certainly less than the required power of the whole vehicle;

if the required power of the whole vehicle is greater than or equal to the idle power and smaller than the rated output power, and the SOC is smaller than the minimum value of the state of charge, the power battery needs to be charged at the moment, the output power of the fuel battery needs to meet the charging requirement of the power battery preferentially, the output power of the power battery is set as the negative rated discharge power, namely the power battery is charged by taking the rated discharge power as the charging power, and the sum of the required power of the whole vehicle and the rated discharge power is compared with the size of the rated output power; if the sum of the finished automobile required power and the rated discharge power is larger than the rated output power, which indicates that the rated output power cannot meet the finished automobile required power after the power battery is charged, the output power of the fuel battery can only be determined as the rated output power, and the actual output power of the finished automobile is the difference value of the rated output power minus the rated discharge power; if the sum of the finished automobile required power and the rated discharge power is not greater than the rated output power, which indicates that the rated output power can also meet the finished automobile required power after the power battery is charged, the output power of the fuel battery is determined as the sum of the rated discharge power and the finished automobile required power, and the actual output power of the finished automobile is the finished automobile required power;

if the required power of the whole vehicle is greater than or equal to zero and smaller than the idle power, and the SOC is smaller than the minimum value of the state of charge, and the power battery needs to be charged at the moment, the output power of the fuel battery is determined as the idle power, and the output power of the power battery is determined as the negative rated discharge power;

if the required power of the whole vehicle is less than zero and the SOC is more than or equal to the maximum value of the state of charge, setting the output power of the fuel cell and the output power of the power cell to be zero;

if the required power of the whole vehicle is less than zero, the SOC is more than or equal to the minimum state of charge and less than the maximum state of charge, the output power of the fuel cell is set to be zero, and the smaller value of the absolute value of the required power of the whole vehicle and the rated discharge power is obtained; setting the output power of the power battery to be a negative small value before the SOC reaches the maximum value of the state of charge;

if the required power of the whole vehicle is less than zero and the SOC is less than the minimum value of the state of charge, the output power of the fuel cell is set to be zero, and the output power of the power cell is set to be negative rated discharge power before the SOC reaches the minimum value of the state of charge.

The condition that the required power of the whole vehicle is larger than or equal to zero only receives the state signal of the accelerator pedal and the state signal of the brake pedal, but the condition that the required power of the whole vehicle is smaller than zero only receives the state signal of the brake pedal. When the required power of the whole vehicle is less than zero, the power battery is required to recover the braking energy and close the fuel cell system, and the output power of the fuel cell is set to zero, which means that the fuel cell system is closed. When the required power of the whole vehicle is less than zero, three conditions exist: the SOC is more than or equal to the maximum of the state of charge, so that the power battery cannot be charged at the moment to ensure the health of the power battery, and the brake energy is consumed by the brake pad; the SOC is more than or equal to the minimum value of the state of charge and less than the maximum value of the state of charge, and at the moment, the smaller value of the required power and the rated discharge power of the whole vehicle is used as the charging power to charge the power battery, so that the power battery can be prevented from being charged and exploded; the SOC is smaller than the minimum value of the state of charge, the SOC needs to be quickly improved to the minimum value of the state of charge in order to ensure the health of the power battery, and the SOC can be quickly improved to the minimum value of the state of charge by charging the power battery with rated discharge power as charging power.

The implementation can also set the output power of the fuel cell to be zero when the required power of the whole vehicle is more than or equal to zero and less than the idle power, but the service life of the fuel cell system can be damaged by frequent closing, while the embodiment preferably sets the output power of the fuel cell to be the idle power when the required power of the whole vehicle is more than or equal to zero and less than the idle power, the fuel cell can work between the idle power and the rated output power as much as possible, the frequent closing of the fuel cell system is avoided, the service life of the fuel cell system is prolonged,

in the embodiment, when the output power of the power battery is determined, the SOC of the power battery is divided into three sections, namely, the section smaller than the minimum state of charge, the section between the minimum state of charge and the maximum state of charge, and the section larger than or equal to the maximum state of charge, and the output power of the power battery is determined according to the section where the SOC of the power battery is located.

As shown in fig. 2, the present embodiment also provides a fuel cell vehicle energy distribution system, including:

the signal judgment module 601 is used for judging whether an accelerator pedal state signal and a brake pedal state signal of the fuel cell automobile are received or not;

the parameter obtaining module 602 is configured to, if one of an accelerator pedal state signal and a brake pedal state signal is received, take the received state signal as a known state signal, and obtain a pedal opening degree and a current vehicle speed in the known state signal;

the power acquisition module 603 is configured to acquire a first required power corresponding to a current vehicle speed, a second required power corresponding to a pedal opening, and an actual output power of the fuel cell vehicle;

the PID control module 604 is configured to perform first PID control on the first required power and the actual output power of the entire vehicle to obtain a third required power, and perform second PID control on the second required power and the actual output power of the entire vehicle to obtain a fourth required power;

the power calculation module 605 is configured to perform weighted summation on the third required power and the fourth required power to obtain a total vehicle required power of the fuel cell vehicle;

and the power distribution module 606 is used for determining the output power of the fuel cell and the output power of the power cell according to the required power of the whole vehicle.

In the process of calculating the required power of the whole vehicle according to the current vehicle speed and the opening degree of an accelerator pedal or the current vehicle speed and the opening degree of a brake pedal, the vehicle speed is not divided into a plurality of intervals, the required power of the whole vehicle is obtained through feedforward and PID feedback control, the dynamic response performance is better, and higher stability can be kept.

Based on the same inventive concept as the fuel cell vehicle energy distribution method, the present embodiment further provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and running on the processor, wherein the processor executes the computer program to implement the steps of any one of the fuel cell vehicle energy distribution methods.

Where a bus architecture (represented by a bus) is used, the bus may comprise any number of interconnected buses and bridges that link together various circuits including one or more processors, represented by a processor, and memory, represented by a memory. The bus may also link various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. A bus interface provides an interface between the bus and the receiver and transmitter. The receiver and transmitter may be the same element, i.e., a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor is responsible for managing the bus and general processing, while the memory may be used for storing data used by the processor in performing operations.

Since the electronic device described in this embodiment is an electronic device used for implementing the method for allocating energy to a fuel cell vehicle in this embodiment of the present invention, based on the method for allocating energy to a fuel cell vehicle described in this embodiment of the present invention, a person skilled in the art can understand the specific implementation of the electronic device in this embodiment and various variations thereof, and therefore, how to implement the method in this embodiment of the present invention by the electronic device is not described in detail here. The electronic devices used by those skilled in the art to implement the method for distributing energy to a fuel cell vehicle in the embodiment of the present invention are within the protection scope of the present invention.

Based on the same inventive concept as the fuel cell vehicle energy distribution method, the invention also provides a computer readable storage medium, and the computer readable storage medium realizes any fuel cell vehicle energy distribution method when being executed.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.