CN116080482B

CN116080482B - Power control method, device, equipment and storage medium of electric equipment

Info

Publication number: CN116080482B
Application number: CN202310378439.7A
Authority: CN
Inventors: 王商商
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2023-04-11
Filing date: 2023-04-11
Publication date: 2023-08-18
Anticipated expiration: 2043-04-11
Also published as: CN116080482A

Abstract

The application relates to a power control method, a device, equipment and a storage medium of electric equipment, wherein the electric equipment comprises a power battery and a fuel battery, and the method comprises the following steps: the allowable interaction power of the power battery in the control time period is firstly obtained, and the output power of the fuel battery is controlled according to the allowable interaction power. The method can make the electric equipment fully play the output performance of the fuel cell in the running process.

Description

Power control method, device, equipment and storage medium of electric equipment

Technical Field

The present application relates to the field of power control technologies, and in particular, to a power control method, apparatus, device, and storage medium for electric devices.

Background

There are more and more electric appliances driven by a combination of a fuel cell and a power cell, for example, a fuel cell vehicle is a vehicle powered by electric power generated by a fuel cell device on board the vehicle.

Taking a hydrogen fuel cell automobile as an example, the hydrogen fuel cell in the hydrogen fuel cell automobile provides main energy for an electric automobile, the power battery is used as an auxiliary energy device for providing peak current in the running process, and surplus energy in the deceleration and braking processes is recovered to realize the control of the whole automobile.

However, in the related art, the fuel cell vehicle cannot sufficiently exert the output performance of the hydrogen fuel cell during operation.

Disclosure of Invention

In view of the foregoing, it is desirable to provide a power control method, apparatus, device, and storage medium for electric devices, which can make a fuel cell fully exert the output performance of a hydrogen fuel cell during operation.

In a first aspect, the present application provides a power control method of an electric device, where the electric device includes a power battery and a fuel cell, and the method includes:

acquiring allowable interaction power of the power battery in a control time period;

the output power of the fuel cell is controlled according to the allowable interaction power.

In the power control method of the electric equipment provided by the embodiment of the application, the allowable interactive power of the power battery in the electric equipment in the control time period is firstly obtained, and the output power of the fuel battery is controlled according to the allowable interactive power. In the method, the allowable interactive power of the power battery in the electric equipment is analyzed, which is equivalent to the allowable interactive power of the power battery, and when the output power of the power battery is insufficient, the output power of the fuel battery can be timely controlled, so that the electric equipment can fully exert the output performance of the fuel battery in the working process; in addition, through analyzing the allowable interaction power, the situation of impending insufficient power of the power battery can be recognized in advance, the output power of the fuel battery can be timely supplemented, and the power stability of electric equipment is improved; and the output power of the fuel cell in the electric equipment is controlled, so that the duty ratio of the power cell in the power output of the electric equipment can be reduced, and the service life of the power cell is prolonged.

In one embodiment, the allowed interaction power includes an allowed charging power, and controlling the output power of the fuel cell according to the allowed interaction power includes:

under the condition that the electric equipment is in a braking state, acquiring the running speed of the electric equipment;

the output power of the fuel cell is controlled in accordance with the running speed, the current discharge power and the allowable charge power of the power cell.

In the power control method of the electric equipment provided by the embodiment of the application, the running speed of the electric equipment is obtained under the condition that the electric equipment is in a braking state, and the output power of the fuel cell is controlled according to the running speed, the current discharging power and the allowable charging power of the power cell. In the method, under the condition that the electric equipment is in a braking state, the running speed of the electric equipment can reflect the power required by the electric equipment, so that the output power of the fuel cell can be timely adjusted based on the running speed, the current discharging power and the allowable charging power of the power cell, and the power control of the fuel cell is realized.

In one embodiment, controlling the output power of the fuel cell according to the running speed, the current discharge power and the allowable charge power of the power cell includes:

If the running speed is greater than a preset speed threshold, acquiring a first duration time when the running speed is greater than the speed threshold;

and if the first duration is greater than or equal to the first time threshold, controlling the output power of the fuel cell according to the relation between the current discharging power and the allowable charging power.

In the power control method of the electric equipment provided by the embodiment of the application, if the running speed is greater than the preset speed threshold, the first duration time of which the running speed is greater than the speed threshold is obtained, and if the first duration time is greater than or equal to the first time threshold, the output power of the fuel cell is controlled according to the relation between the current discharging power and the allowable charging power. In the method, the running speed of the electric equipment is larger than the speed threshold value to represent that the running speed of the electric equipment is larger, the running working condition of the electric equipment can be determined through the first duration time of the larger running speed, and the output power of the fuel cell is controlled according to the relation between the current discharging power and the allowable charging power under the condition that the first duration time is larger than or equal to the first time threshold value, so that the output power of the fuel cell is controlled pertinently, the accuracy of controlling the output power of the fuel cell is further improved, and the output performance of the fuel cell can be fully exerted in the working process of the electric equipment.

In one embodiment, controlling the output power of the fuel cell according to the relationship between the present discharge power and the allowable charge power includes:

if the current discharging power is smaller than or equal to the allowable charging power, determining that the output power of the fuel cell is kept in the current state; and/or the number of the groups of groups,

and if the current discharging power is larger than the allowable charging power, adjusting the output power of the fuel cell until the current discharging power is smaller than or equal to the allowable charging power.

In the power control method of the electric equipment provided by the embodiment of the application, if the current discharging power is smaller than or equal to the allowable charging power, determining that the output power of the fuel cell keeps the current state; and/or if the current discharging power is larger than the allowable charging power, adjusting the output power of the fuel cell until the current discharging power is smaller than or equal to the allowable charging power. In the method, under the condition that the current discharging power is smaller than or equal to the allowable charging power, the output power of the fuel cell is controlled to keep the current state, and under the condition that the current discharging power is larger than the allowable charging power, the output power of the fuel cell is regulated, so that the power control of the fuel cell is carried out in a targeted manner, the accuracy of the control of the output power of the fuel cell is further improved, and the output capability of the fuel cell is fully exerted.

In one embodiment, adjusting the output power of the fuel cell until the current discharge power is less than or equal to the allowable charge power includes:

generating a request for reducing the power of the fuel cell according to a preset power adjustment strategy;

a request to reduce fuel cell power is sent to the fuel controller to instruct the fuel controller to reduce the output power of the fuel cell until the current discharge power is less than or equal to the allowable charge power.

In the power control method of the electric equipment provided by the embodiment of the application, a request for reducing the power of the fuel cell is generated according to the preset power adjustment strategy, and the request for reducing the power of the fuel cell is sent to the fuel controller so as to instruct the fuel controller to reduce the output power of the fuel cell until the current discharging power is smaller than or equal to the allowable charging power. In the method, the output power of the fuel cell is directly reduced by the fuel controller, and the control of the output power of the fuel cell is rapidly realized.

In one embodiment, the method further comprises:

if the first duration is less than the first time threshold, it is determined that the output power of the fuel cell remains in the current state.

In the power control method of the electric equipment provided by the embodiment of the application, if the first duration is smaller than the first time threshold, the output power of the fuel cell is determined to keep the current state. And under the condition that the first duration is smaller than the first time threshold, controlling the output power of the fuel cell to keep the current power control strategy, and under the condition that the first duration is larger than or equal to the first time threshold, controlling the power of the fuel cell by the current discharging power and the current allowable continuous charging power, so that the output power of the fuel cell is controlled in a targeted manner, and the accuracy of controlling the output power of the fuel cell is further improved.

In one embodiment, the allowable interaction power includes an allowable discharge power, and controlling the output power of the fuel cell according to the allowable interaction power includes:

under the condition that the electric equipment is in a non-braking state, if the current discharge power of the power battery is smaller than or equal to the allowable discharge power, determining that the output power of the fuel battery is kept in the current state; and/or the number of the groups of groups,

and if the current discharge power is larger than the allowable discharge power, acquiring a second duration time when the current discharge power is larger than the allowable discharge power, and if the second duration time is larger than or equal to a second time threshold value, adjusting the output power of the fuel cell until the current discharge power is smaller than or equal to the allowable discharge power.

In the power control method of the electric equipment provided by the embodiment of the application, under the condition that the electric equipment is in a non-braking state, if the current discharge power of the power battery is smaller than or equal to the allowable discharge power, determining that the output power of the fuel battery is kept in the current state; and/or if the current discharge power is greater than the allowable discharge power, acquiring a second duration time when the current discharge power is greater than the allowable discharge power, and if the second duration time is greater than or equal to a second time threshold value, adjusting the output power of the fuel cell until the current discharge power is less than or equal to the allowable discharge power. In the method, under the condition that the electric equipment is in a non-braking state, if the current discharge power is smaller than or equal to the allowable discharge power, the output power of the fuel cell is controlled to keep the current state, and under the condition that the current discharge power is larger than the allowable discharge power, if the second duration time of the current discharge power larger than the allowable discharge power is larger than or equal to a second time threshold value, the output power of the fuel cell is regulated, so that the output power of the fuel cell is controlled in a targeted manner, and the accuracy of controlling the output power of the fuel cell is further improved.

In one embodiment, adjusting the output power of the fuel cell until the current discharge power is less than or equal to the allowable discharge power includes:

generating a request for increasing the power of the fuel cell according to a preset power adjustment strategy;

a request to increase fuel cell power is sent to the fuel controller to instruct the fuel controller to increase the output power of the fuel cell until the current discharge power is less than or equal to the allowable discharge power.

In the power control method of the electric equipment provided by the embodiment of the application, a request for increasing the power of the fuel cell is generated according to the preset power adjustment strategy, and the request for increasing the power of the fuel cell is sent to the fuel controller so as to instruct the fuel controller to increase the output power of the fuel cell until the current discharge power is smaller than or equal to the allowable discharge power. In the method, the output power of the fuel cell is directly increased through the fuel controller, so that the control of the output power of the fuel cell is rapidly realized.

In one embodiment, the method further comprises:

if the second duration is less than the second time threshold, it is determined that the output power of the fuel cell remains in the current state.

In the power control method of the electric equipment provided by the embodiment of the application, if the second duration is smaller than the second time threshold, the output power of the fuel cell is determined to keep the current state. The output power of the fuel cell is controlled through the relation between the second duration and the second time threshold, so that the output power of the fuel cell is controlled in a targeted manner, and the accuracy of controlling the output power of the fuel cell is further improved.

In one embodiment, the method further comprises:

under the condition that the electric equipment is in a braking state, if the running speed of the electric equipment is smaller than or equal to a preset speed threshold value, acquiring a third duration time when the running speed is smaller than or equal to the speed threshold value;

and if the third duration is greater than or equal to the third time threshold, controlling the output power of the fuel cell according to the relation between the current discharging power and the current allowable continuous charging power of the power cell.

In the power control method of the electric equipment provided by the embodiment of the application, if the running speed of the electric equipment is smaller than or equal to the preset speed threshold value under the condition that the electric equipment is in a braking state, acquiring the third duration time of which the running speed is smaller than or equal to the speed threshold value; and if the third duration is greater than or equal to the third time threshold, controlling the output power of the fuel cell according to the relation between the current discharging power of the power cell and the current allowable continuous charging power of the power cell. In the method, under the condition that the electric equipment is in a braking state, if the running speed of the electric equipment is smaller than or equal to a speed threshold value, the running speed of the electric equipment is represented to be smaller, the running working condition of the electric equipment can be determined through a third duration of the smaller running speed, and under the condition that the third duration is greater than or equal to a third time threshold value, the power control is carried out by the current discharging power and the current allowable continuous charging power, so that the output power of the fuel cell is controlled pertinently, and the output performance of the fuel cell can be fully exerted in the running process of the fuel cell automobile.

In one embodiment, controlling the output power of the fuel cell according to a relationship between the current discharge power and the current allowable continuous charge power of the power cell includes:

if the current discharging power is greater than or equal to the current allowable continuous charging power, determining that the output power of the fuel cell keeps the current state; and/or the number of the groups of groups,

and if the current discharging power is smaller than the current allowable continuous charging power, adjusting the output power of the fuel cell until the current discharging power is larger than or equal to the current allowable continuous charging power.

In the power control method of the electric equipment provided by the embodiment of the application, if the current discharging power is greater than or equal to the current allowable continuous charging power, determining that the output power of the fuel cell is kept in the current state; and/or if the current discharging power is smaller than the current allowable continuous charging power, adjusting the output power of the fuel cell until the current discharging power is larger than or equal to the current allowable continuous charging power. In the method, under the condition that the current discharging power is larger than or equal to the current continuously-allowed charging power, the output power of the fuel cell is controlled to keep the current state, and under the condition that the current discharging power is smaller than the current continuously-allowed charging power, the output power of the fuel cell is regulated, so that the output power of the fuel cell is controlled in a targeted manner, the accuracy of controlling the output power of the fuel cell is further improved, and the output capability of the fuel cell is fully exerted.

In one embodiment, adjusting the output power of the fuel cell until the current discharge power is greater than or equal to the current allowable continuous charge power includes:

a request to reduce fuel cell power is sent to the fuel controller to instruct the fuel controller to reduce the output power of the fuel cell until the current discharge power is greater than or equal to the current allowed continuous charge power.

In the power control method of the electric equipment provided by the embodiment of the application, a request for reducing the power of the fuel cell is generated according to a preset power adjustment strategy; a request to reduce fuel cell power is sent to the fuel controller to instruct the fuel controller to reduce the output power of the fuel cell until the current discharge power is greater than or equal to the current allowed continuous charge power. In the method, the output power of the fuel cell is directly reduced by the fuel controller, and the control of the output power of the fuel cell is rapidly realized.

In one embodiment, the method further comprises:

if the third duration is less than the third time threshold, it is determined that the output power of the fuel cell remains in the current state.

In the power control method of the electric equipment provided by the embodiment of the application, if the third duration is smaller than the third time threshold, the output power of the fuel cell is determined to keep the current state. The output power of the fuel cell is controlled in a targeted manner through the relation between the third duration and the third time threshold, and the accuracy of controlling the output power of the fuel cell is further improved.

In one embodiment, obtaining the allowable interaction power of the power battery within a preset time period includes:

determining a control duration according to the maximum net output power, the idle power and the power change rate of the fuel cell;

and acquiring the allowable interaction power of the power battery in the control time.

In the power control method of the electric equipment provided by the embodiment of the application, the control duration is determined according to the maximum net output power, the idle power and the power change rate of the fuel cell, and the allowable interactive power of the power cell in the control duration is obtained. In the method, the maximum net output power, the idle power and the power change rate reflect the power change information of the electric equipment, so that a section of proper and objective control duration which effectively and accurately characterizes the power battery can be obtained according to the maximum net output power, the idle power and the power change rate; on the basis of the control duration, the allowable interaction power is more accurate.

In one embodiment, allowing the interactive power includes allowing a charging power, and the rate of power change includes a rate of load shedding; determining a control duration based on the maximum net output power, the idle power, and the rate of power change of the fuel cell, comprising:

and determining a control duration corresponding to the allowable charging power according to a preset time constant, the maximum net output power, the idle power and the load reduction rate.

In the power control method of the electric equipment provided by the embodiment of the application, when the control duration of the allowable charging power is determined, the buffer time is provided for the power conversion of the electric equipment through the time constant, so that the control duration is more suitable and objective.

In one embodiment, the allowable interaction power comprises allowable discharge power and the power change rate comprises an up-load rate; determining a control duration based on the maximum net output power, the idle power, and the rate of power change of the fuel cell, comprising:

and determining a control duration corresponding to the allowable discharge power according to a preset time constant, the maximum net output power, the idle power and the load-lifting rate.

In the power control method of the electric equipment provided by the embodiment of the application, when the control duration of the allowable discharge power is determined, the buffer time is provided for the power conversion of the electric equipment through the time constant, so that the control duration is more suitable and objective.

In a second aspect, the present application also provides a power control device of an electric device, where the electric device includes a power battery and a fuel cell, and the device includes:

the acquisition module is used for acquiring the allowable interaction power of the power battery in the control time length;

and the control module is used for controlling the output power of the fuel cell according to the allowable interaction power.

In a third aspect, an embodiment of the present application provides a computer device, including a memory and a processor, the memory storing a computer program, the processor implementing the steps of the method provided by any of the embodiments of the first aspect, when the computer program is executed.

In a fourth aspect, embodiments of the present application provide a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method provided by any of the embodiments of the first aspect described above.

In a fifth aspect, embodiments of the present application also provide a computer program product comprising a computer program which, when executed by a processor, implements the steps of the method provided by any of the embodiments of the first aspect described above.

The foregoing description is only an overview of the present application, and is intended to be implemented in accordance with the teachings of the present application in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present application more readily apparent.

Drawings

FIG. 1 is an application environment diagram of a power control method of a powered device in one embodiment;

FIG. 2 is a flow chart of a method of controlling power of a powered device in one embodiment;

FIG. 3 is a flow chart illustrating a method of controlling power of a powered device according to another embodiment;

FIG. 4 is a flow chart of a power control method of a powered device according to another embodiment;

FIG. 5 is a flow chart of a method for controlling power of a powered device according to another embodiment;

FIG. 6 is a flow chart of a method for controlling power of a powered device according to another embodiment;

FIG. 7 is a flow chart of a method for controlling power of a powered device according to another embodiment;

FIG. 8 is a flow chart of a method for controlling power of a powered device according to another embodiment;

FIG. 9 is a flow chart of a method for controlling power of a powered device according to another embodiment;

FIG. 10 is a flowchart illustrating a method for controlling power of a powered device according to another embodiment;

FIG. 11 is a flowchart illustrating a power control method of a powered device according to another embodiment;

FIG. 12a is a flowchart illustrating a method for controlling power of a powered device according to another embodiment;

FIG. 12b is a flowchart illustrating a method for controlling power of a powered device according to another embodiment;

FIG. 13 is a block diagram illustrating a power control device of a powered device in one embodiment;

fig. 14 is an internal structural diagram of a computer device in one embodiment.

Detailed Description

Embodiments of the technical scheme of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present application, and thus are merely examples, and are not intended to limit the scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.

In the description of embodiments of the present application, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In a fuel cell vehicle, the output power of the fuel cell can affect the duty cycle of the power cell at the power output of the vehicle, and the duty cycle of the power cell at the power output of the vehicle can affect the service life of the power cell. In the related art, the power output of the fuel cell is controlled mainly by using factors such as the residual capacity of the power cell, the running speed and working condition of the fuel cell automobile, and the like, and the output mode of the fuel cell is subdivided by different algorithms and logics.

However, the above-mentioned ways of controlling the power output of the fuel cell are all from the standpoint of the whole vehicle, and the actual output capability of the power cell is not considered, and if the power of the power cell is insufficient, the power output of the fuel cell may be increased again, so that there is a possibility that the power performance is insufficient.

The fuel cell automobile is only an example, and the embodiment of the application is suitable for electric equipment driven by the combination of the fuel cell and the power cell.

Based on the above consideration, in order to fully exert the output capability of the fuel cell and reduce the output duty ratio of the power cell in the output power of the electric equipment, a power control method of the electric equipment is provided, and the output power of the fuel cell is controlled by the allowable interactive power of the power cell in the control duration.

In the power control method of the electric equipment, the output power of the fuel cell is controlled according to the allowable interactive power of the power cell in the control time, so that the electric equipment can fully exert the output performance of the fuel cell in the operation process.

Of course, it should be understood that the technical effects that can be achieved by the power control method of the electric equipment provided in the embodiment of the application are not limited to this, and other technical effects, such as controlling the energy of the electric equipment, fully playing the output performance of the fuel cell, reducing the duty ratio of the power battery in the power output of the electric equipment, improving the service life of the power battery, and the like, can also be achieved. The technical effects achieved in the embodiments of the present application can be seen in the following embodiments.

For convenience of explanation, the following embodiment is described with reference to an electric device according to an embodiment of the present application, as shown in fig. 1, fig. 1 is a schematic structural diagram of an electric device 100 provided in the embodiment of the present application, where a controller 102 is a controller of the electric device 100, and for example, the electric device may be a fuel cell car.

The control of the output power of the fuel cell is described below with a controller in the consumer as an execution body.

In one embodiment, as shown in fig. 2, there is provided a power control method of a power consumer, where the power consumer includes a power battery and a fuel cell, and the method is applied to the controller of the power consumer in fig. 1, and includes the following steps:

s201, the allowable interaction power of the power battery in the control duration is obtained.

Wherein, the electric equipment comprises a power battery and a fuel battery; for example, taking a hydrogen fuel cell car as an example, the hydrogen fuel cell car includes a hydrogen fuel cell and a power cell.

The allowable interaction power of the power cell characterizes the power interaction capability of the power cell, including allowable charge power and allowable discharge power, wherein the allowable charge power represents the maximum input capability of the power cell and the allowable discharge power represents the maximum output capability of the power cell.

Therefore, when the output power of the fuel cell needs to be controlled, the allowable interaction power of the power cell in the electric equipment in the control time period can be obtained, and the output power of the fuel cell is controlled through the allowable interaction power of the power cell in the control time period.

Optionally, the control duration may be a preset duration, and the control duration may also be determined by a characteristic of the fuel cell, where in the embodiment of the present application, the start time and the end time of the control duration are not limited, for example, the start time of the control duration may be defaulted when the power control method of the electric device in the present application starts to be executed.

The electric equipment can also comprise a battery management system, the battery management system monitors the whole power battery and collects state data of the power battery, and the state data of the power battery comprise discharge power, pulse discharge power permission, pulse charge power permission, continuous charge power permission, interactive power permission and the like.

Wherein, the discharge power represents the discharge power of the power battery at the current moment; the allowable pulse discharge power represents the allowable instantaneous discharge power of the power battery at the current moment; the allowable pulse charging power represents the instantaneous charging power allowed by the power battery at the current moment; the allowable continuous charging power represents charging power allowed by the power battery for a long time; the allowable interaction power represents the maximum power that the power battery can allow to interact with external electric energy.

Therefore, when the allowable interactive power of the power battery in the electric equipment in the control time period is obtained, the allowable interactive power can be directly obtained from the battery management system; or can be acquired directly by a sensor.

S202, controlling the output power of the fuel cell according to the allowable interaction power.

The allowable interaction power of the power battery is the allowable interaction power of the power battery in the control period, and therefore, the output power of the fuel battery can be controlled according to the allowable interaction power.

Controlling the output power of the fuel cell is controlling the power distribution and output of the fuel cell.

In one embodiment, the manner of controlling the output power of the fuel cell may be that the output power of the fuel cell is output through a preset power control model, for example, the allowable interaction power of the power cell is used as an input of the power control model, the allowable interaction power is analyzed through the power control model, and a control manner of outputting the output power of the fuel cell, for example, an output value of the output power of the fuel cell is output.

Optionally, the current discharging power of the power battery can be compared with the allowable interaction power, and the output power of the fuel battery can be determined according to the comparison result; specifically, if the current discharge power of the power cell is greater than the allowable interaction power, the power output of the fuel cell is adjusted.

The discharging power of the power battery and the output power of the fuel battery are the total power required by the electric equipment according to the law of conservation of energy; the motor of the electric equipment can generate back flushing power, namely energy feedback power, and the current discharging power of the power battery is equal to the sum of the current energy feedback power of the electric equipment and the output power of the fuel battery in the working process.

When the power control is carried out on the electric equipment, the state of the electric equipment is judged first, and the power control is carried out on the electric equipment according to the current discharging power and the allowable interaction power of the power battery further according to the state of the electric equipment. If the state of the electric equipment is a braking state, the electric equipment is possibly at a reduced running speed, the total power output required by the electric equipment is reduced, and at the moment, redundant energy recovery is possibly caused. Therefore, under the condition that the state of the electric equipment is a braking state, the electric equipment can be subjected to power control according to the current discharging state of the power battery and the allowable charging power in the control time.

In one embodiment, as shown in fig. 3, allowing the interaction power includes allowing a charging power; controlling the output power of the fuel cell according to the allowable interaction power, comprising the steps of:

s301, acquiring the running speed of the electric equipment under the condition that the state of the electric equipment is in a braking state.

Under the condition that the state of the electric equipment is in a braking state, the running speed of the electric equipment needs to be obtained, and the output power of the fuel cell is further controlled according to the allowable charging power of the power cell based on the running speed.

The running speed of the electric equipment can be obtained through a speed sensor on the electric equipment; specifically, the speed sensor can acquire the running speed of the electric equipment in real time, and transmit the acquired running speed to the controller in the electric equipment in real time, and the controller in the electric equipment receives the running speed transmitted by the speed sensor.

It should be noted that, when the state of the electric device is the braking state, the current discharging power of the power battery is smaller than or equal to the current allowable pulse charging power of the power battery.

S302, controlling the output power of the fuel cell according to the running speed, the current discharging power and the allowable charging power of the power cell.

The current discharge power of the power battery represents the discharge power of the power battery at the current moment. In one embodiment, the current discharge power of the power battery may be obtained directly from the battery management system of the powered device.

In one embodiment, the output power of the fuel cell is controlled according to the running speed, the current discharging power and the allowable charging power of the power cell by controlling the output power of the fuel cell according to a preset control model, specifically, the running speed of the electric equipment, the current discharging power and the allowable charging power of the power cell are taken as the inputs of the control model, and the running speed, the current discharging power and the allowable charging power are analyzed through the control model to output the output power of the fuel cell.

In one embodiment, as shown in fig. 4, the output power of the fuel cell is controlled according to the traveling speed, the current discharge power and the allowable charge power of the power cell, comprising the steps of:

s401, if the running speed is greater than a preset speed threshold, acquiring a first duration time when the running speed is greater than the speed threshold.

If the running speed is greater than the preset speed threshold, the running speed of the electric equipment may be greater, and the first duration that the running speed of the electric equipment is greater than the speed threshold is further acquired.

The first duration is a duration from when the running speed of the electric equipment is detected to be greater than the speed threshold value to when the running speed is always greater than the speed threshold value.

And S402, if the first duration is greater than or equal to a first time threshold, controlling the output power of the fuel cell according to the relation between the current discharging power and the allowable charging power.

If the first duration time of the running speed is greater than or equal to the speed threshold value and is greater than or equal to the first time threshold value, the electric equipment is in a long downhill working condition, the electric equipment is decelerated and the time is long, and the output power of the fuel cell is controlled according to the relation between the current discharging power and the allowable charging power of the power cell under the condition that the first duration time is greater than or equal to the first time threshold value. The first time threshold may be a preset duration.

In one embodiment, if the first duration is less than the first time threshold, it is determined that the output power of the fuel cell remains in the current state.

If the first duration time of the running speed being greater than the speed threshold value is smaller than the first time threshold value, the electric equipment is in a sudden deceleration working condition, the electric equipment is decelerating and the time is short, and the output power of the fuel cell can be kept in the current state under the condition that the first duration time is smaller than the first time threshold value, and the power control is carried out by the strategy of the braking process of the electric equipment, namely, the output power of the fuel cell can be unchanged under the condition.

For example, the first duration isThe first time threshold is->For the purposes of illustration, if->Determining that the output power of the fuel cell remains in the current state; if->The output power of the fuel cell is controlled according to the relationship between the current discharge power and the allowable charge power of the power cell.

In one embodiment, as shown in fig. 5, controlling the output power of the fuel cell according to the relationship between the present discharge power and the allowable charge power, includes the steps of:

s501, if the current discharge power is less than or equal to the allowable charge power, it is determined that the output power of the fuel cell remains in the current state.

And under the condition that the current discharging power is smaller than or equal to the allowable charging power, determining that the output power of the fuel cell keeps the current state, and performing power control on the output power of the fuel cell by using the control strategy of the electric equipment.

S502, if the current discharging power is larger than the allowable charging power, adjusting the output power of the fuel cell until the current discharging power is smaller than or equal to the allowable charging power.

In the case where the current discharge power of the power cell is greater than the allowable charge power, the output power of the fuel cell needs to be adjusted until the current discharge power is less than or equal to the allowable charge power.

Adjusting the output power of the fuel cell includes reducing the output power of the fuel cell such that the discharge power of the power cell is less than or equal to the allowable charge power.

With current discharge power asThe allowable charging power is +. >For the purposes of illustration, if->It is determined that the output power of the fuel cell remains in the current state if +.>And adjusting the output power of the fuel cell until the current discharge power is less than or equal to the allowable charge power.

If the current discharge power is greater than the allowable charge power, the output power of the fuel cell is adjusted, and in one embodiment, how to adjust the output power of the fuel cell when the current discharge power is greater than the allowable charge power is described in detail below, and in one embodiment, as shown in fig. 6, the output power of the fuel cell is adjusted until the current discharge power is less than or equal to the allowable discharge power, including the steps of:

S601, generating a request for reducing the power of the fuel cell according to a preset power adjustment strategy.

The power adjustment policy may include a power reduction policy and a power increase policy; the request to reduce fuel cell power may include a value of output power to which the fuel cell is to be reduced.

If the current discharging power is larger than the allowable charging power, generating a request for reducing the power of the fuel cell according to a reducing strategy; specifically, the reduction strategy may include a fixed power value, which is an output power value of the fuel cell to be reduced each time, so that the output power value to which the fuel cell is to be reduced is determined according to a difference between the current output power of the fuel cell and the fixed power value; a request to reduce fuel cell power is then generated based on the output power value to which the fuel cell needs to be reduced.

If the current discharging power is larger than the allowable charging power, generating a request for reducing the power of the fuel cell according to a reducing strategy; specifically, the reduction strategy may include a difference range between the current discharge power and the allowable charge power and an output power value to be reduced of the fuel cell, so that, according to the difference between the current discharge power and the allowable charge power, an output power value to be reduced of the fuel cell corresponding to the difference range between the current discharge power and the allowable charge power, where the difference is located, is obtained from the reduction strategy, then, based on the current output power of the fuel cell and the output power value to be reduced, an output power value to be reduced of the fuel cell is determined, and a request for reducing the power of the fuel cell is generated based on the output power value to be reduced of the fuel cell.

S602, a request for reducing the power of the fuel cell is sent to the fuel controller to instruct the fuel controller to reduce the output power of the fuel cell until the current discharge power is less than or equal to the allowable charge power.

The controller of the electric equipment sends the generated request for reducing the power of the fuel cell to the fuel controller, and the fuel controller correspondingly adjusts the output power of the fuel cell according to the output power value in the request for reducing the power of the fuel cell until the current discharging power is smaller than or equal to the allowable charging power.

It should be noted that, if the current discharge power of the power battery is still greater than the allowable charge power after the output power of the fuel battery is adjusted, the operation of adjusting the output power of the fuel battery is continued until the current discharge power of the power battery is less than or equal to the allowable charge power.

The above embodiment is a description of how to control the output power of the fuel cell in the case that the state of the electric device is the braking state, and the following describes, by way of one embodiment, how to control the output power of the fuel cell in the case that the state of the electric device is the non-braking state, and in one embodiment, as shown in fig. 7, the allowable interaction power includes the allowable discharge power, and the control of the output power of the fuel cell according to the allowable interaction power includes the following steps:

s701, under the condition that the electric equipment is in a non-braking state, if the current discharging power of the power battery is smaller than or equal to the allowable discharging power, determining that the output power of the fuel battery is kept in the current state.

If the state of the electric equipment is in a non-braking state, the electric equipment keeps running stably or advances in an accelerating mode, and the total power output required by the electric equipment can be increased.

Therefore, when the state of the electric equipment is the non-braking state, the output power of the fuel cell can be controlled according to the current discharge power of the power cell and the allowable discharge power in the control duration.

Specifically, when the state of the electric equipment is in a non-braking state and the current discharge power of the power battery is smaller than or equal to the allowable discharge power, and the electric equipment is in a stable driving working condition, the output power of the fuel battery is determined to keep the current state, and the output power of the fuel battery is controlled by the control strategy of the electric equipment.

When the state of the electric device is a non-braking state, the output power of the fuel cell satisfies the allowable charging power of the power cell within the control period of time or less.

S702, if the current discharge power is larger than the allowable discharge power, obtaining a second duration time when the current discharge power is larger than the allowable discharge power, and if the second duration time is larger than or equal to a second time threshold value, adjusting the output power of the fuel cell until the current discharge power is smaller than or equal to the allowable discharge power.

Wherein the second duration is a duration from when the current discharge power of the power battery is detected to be greater than the allowable discharge power to when the current discharge power is always greater than the allowable discharge power.

If the current discharge power is greater than or equal to the second time threshold value, the current electric equipment is in an overtaking or climbing working condition, and the current electric equipment is in an accelerating state and has long accelerating time, and the output power of the fuel cell needs to be adjusted until the current discharge power is less than or equal to the allowable discharge power under the condition that the second time duration is greater than or equal to the second time threshold value. The second time threshold is a preset duration.

In one embodiment, if the second duration is less than the second time threshold, it is determined that the output power of the fuel cell remains in the current state.

If the current discharge power is larger than the second duration of the allowable discharge power and smaller than the second time threshold, the electric equipment is in a sudden acceleration working condition, and the current electric equipment is in an acceleration state but has a short acceleration time, and if the second duration is smaller than the second time threshold, the output power of the fuel cell is kept to be controlled in the current state, the electric equipment is controlled by the control strategy of the electric equipment, and at the moment, the temporarily increased power requirement of the electric equipment is met by the pulse discharge capacity of the power cell.

It should be noted that, under the condition that the electric equipment is overtaking, climbing working condition or rapid acceleration working condition, the allowable discharge power of the power battery meets the current allowable pulse discharge power smaller than or equal to the power battery.

In the following, a detailed description will be given of how to adjust the output power of the fuel cell in the case where the second duration is greater than or equal to the second time threshold, in one embodiment, as shown in fig. 8, the output power of the fuel cell is adjusted until the current discharge power is less than or equal to the allowable discharge power, including the steps of:

s801, generating a request for increasing the power of the fuel cell according to a preset power adjustment strategy.

The power adjustment policy may include a power reduction policy and a power increase policy; the request to increase the power of the fuel cell may include a value of the output power to which the fuel cell is to be added.

If the second duration is greater than or equal to the second time threshold, generating a request to increase fuel cell power according to an increase strategy; specifically, the adding strategy includes a fixed power value, which is the output power value of the fuel cell to be added each time, so that the output power value to be added by the fuel cell is determined according to the sum of the current output power of the fuel cell and the fixed power value; an increase fuel cell power request is then generated based on the output power value to which the fuel cell needs to be added.

If the second duration is greater than or equal to the second time threshold, generating a request to increase fuel cell power according to an increase strategy; specifically, the increase strategy includes determining an output power value to be increased for the fuel cell from a range of differences between the second duration and the second time threshold, and therefore, based on the difference between the second duration and the second time threshold, obtaining from the increase strategy an output power value to be increased for the fuel cell corresponding to the range of differences between the second duration and the second time threshold where the difference is located, then determining an output power value to be increased for the fuel cell based on the current output power of the fuel cell and the output power value to be increased, and generating an increase fuel cell power request based on the output power value to be increased for the fuel cell.

S802, sending a request for increasing the power of the fuel cell to the fuel controller to instruct the fuel controller to increase the output power of the fuel cell until the current discharge power is less than or equal to the allowable discharge power.

The controller sends the generated request for increasing the power of the fuel cell to the fuel controller, and the fuel controller correspondingly adjusts the output power of the fuel cell according to the output power value in the request for increasing the power of the fuel cell until the current discharge power is smaller than or equal to the allowable discharge power.

It should be noted that, if the current discharge power of the power cell is greater than the allowable discharge power after the output power of the fuel cell is adjusted, the operation of adjusting the output power of the fuel cell is continued until the current discharge power of the power cell is less than or equal to the allowable discharge power.

The above embodiment describes a case where the electric device is in a braking state and the running speed of the electric device is greater than the preset speed threshold, and the following describes a case where the electric device is in a braking state and the running speed of the electric device is less than or equal to the preset time threshold, and in one embodiment, as shown in fig. 9, the embodiment includes the following steps:

S901, if the running speed of the electric equipment is smaller than or equal to a preset speed threshold value under the condition that the electric equipment is in a braking state, acquiring a third duration time when the running speed is smaller than or equal to the speed threshold value.

The preset speed threshold is a constant, and the speed threshold is not limited in the embodiment of the application and can be specifically set according to actual conditions.

And under the condition that the electric equipment is in a braking state, if the running speed is smaller than or equal to a preset speed threshold value, the running speed of the electric equipment is smaller, and the third duration time that the running speed of the electric equipment is smaller than or equal to the speed threshold value is further obtained.

The third duration is a duration from when the running speed of the electric equipment is detected to be smaller than or equal to the speed threshold value to when the running speed is always smaller than or equal to the speed threshold value.

S902, if the third duration is greater than or equal to the third time threshold, controlling the output power of the fuel cell according to the relationship between the current discharging power of the power cell and the current allowable continuous charging power of the power cell.

And after the running speed of the electric equipment is smaller than or equal to a preset speed threshold value, acquiring a third duration time of which the running speed is smaller than or equal to the speed threshold value, further performing power control on the electric equipment according to the third duration time and the current discharge power of the power battery.

If the third duration time of the running speed being smaller than or equal to the speed threshold value is larger than or equal to the third time threshold value, the electric equipment is indicated to be in a long-time stopping working condition, the current stopping time is longer, and then the output power of the fuel cell is controlled according to the relation between the current discharging power and the current allowable continuous charging power of the power cell under the condition that the third duration time is larger than or equal to the third time threshold value.

Wherein the current allowable continuous charging power represents the maximum allowable continuous charging power of the power battery at the current moment, and the third time threshold is，/>As a function of the time constant,nis a time coefficient; it should be noted that, in the above embodiment, the first time threshold, the second time threshold, and the third time threshold may be the same or different, and may be set according to specific situations, which is not limited in the embodiment of the present application.

In one embodiment, if the third duration is less than the third time threshold, it is determined that the output power of the fuel cell remains in the current state.

If the third duration time of the running speed is smaller than or equal to the speed threshold value is smaller than the third time threshold value, the electric equipment is indicated to be in a temporary parking working condition, and the current parking time is shorter, and if the third duration time is smaller than the third time threshold value, the output power of the fuel cell is kept in the current state, and the power control is carried out by the strategy of the braking process of the electric equipment.

With a third duration ofThe third time threshold is +.>For the purposes of illustration, if->Determining that the output power of the fuel cell remains in the current state; if->And controlling the power of the electric equipment according to the relation between the current discharging power of the power battery and the current allowable continuous charging power of the power battery.

In one embodiment, controlling the output power of the fuel cell according to the relationship between the current discharge power and the current allowable continuous charge power of the power cell includes the steps of:

if the current discharging power is greater than or equal to the current allowable continuous charging power, determining that the output power of the fuel cell keeps the current state; and/or if the current discharging power is smaller than the current allowable continuous charging power, adjusting the output power of the fuel cell until the current discharging power is larger than or equal to the current allowable continuous charging power.

And under the condition that the current discharging power is larger than or equal to the current continuously-allowed charging power, determining that the output power of the fuel cell keeps the current state, and performing power control by the control strategy of the electric equipment.

And under the condition that the current discharging power is smaller than the current allowable continuous charging power, adjusting the output power of the fuel cell until the current discharging power is larger than or equal to the current allowable continuous charging power.

Adjusting the output power of the fuel cell includes reducing the output power of the fuel cell such that the current discharge power is greater than or equal to the current allowable continuous charge power.

In the following, a detailed description will be given of how to adjust the output power of the fuel cell when the electric device is in a braking state, the third duration that the running speed of the electric device is less than or equal to the speed threshold is greater than or equal to the third time threshold, and the current discharging power is less than the current allowable continuous charging power, in an embodiment, as shown in fig. 10, the output power of the fuel cell is adjusted until the current discharging power is greater than or equal to the current allowable continuous charging power, including the following steps:

s1001, generating a request for reducing the power of the fuel cell according to a preset power adjustment strategy.

If the current discharging power of the power battery is smaller than the current allowable continuous charging power, generating a request for reducing the power of the fuel battery according to a reduction strategy; specifically, the reduction strategy may include a fixed power value, which is an output power value of the fuel cell to be reduced each time, so that the output power value to which the fuel cell is to be reduced is determined according to a difference between the current output power of the fuel cell and the fixed power value; a request to reduce fuel cell power is then generated based on the output power value to which the fuel cell needs to be reduced.

If the current discharging power is smaller than the current continuously allowed charging power, generating a request for reducing the power of the fuel cell according to a reducing strategy; specifically, the reduction strategy may include a correspondence between a difference range between the current discharge power and the current allowable continuous charging power and an output power value to be reduced of the fuel cell, so that, according to a difference between the current discharge power and the current allowable continuous charging power, an output power value to be reduced of the fuel cell corresponding to the difference range between the current discharge power where the difference is located and the current allowable continuous charging power is obtained from the reduction strategy, then, based on the current output power of the fuel cell and the output power value to be reduced, an output power value to be reduced of the fuel cell is determined, and a request for reducing the power of the fuel cell is generated based on the output power value to be reduced of the fuel cell.

S1002 sends a request to the fuel controller to decrease the power of the fuel cell to instruct the fuel controller to decrease the output power of the fuel cell until the current discharge power is greater than or equal to the current allowable continuous charge power.

The controller sends the generated request for reducing the power of the fuel cell to the fuel controller, and the fuel controller correspondingly adjusts the output power of the fuel cell according to the output power value in the request for reducing the power of the fuel cell.

It should be noted that, if the current discharge power of the power battery is still smaller than the current allowable continuous charging power after the output power of the fuel battery is adjusted, the operation of adjusting the output power of the fuel battery is continuously performed until the current discharge power of the power battery is greater than or equal to the current allowable continuous charging power.

The above-mentioned allowed interaction power in the embodiments is the allowed interaction power of the power battery in the control period, and the following describes how to obtain the allowed interaction power of the power battery in the preset period through one embodiment, and in one embodiment, as shown in fig. 11, the method includes the following steps:

S1101, determining a control duration based on the maximum net output power, the idle power, and the rate of power change of the fuel cell.

The maximum net output power of the fuel cell represents the maximum power that the fuel cell can output under the condition of removing the required consumed power, and for example, the maximum net output power can be measured according to the power output shaft of the electric equipment after all accessories are installed under the actual use condition; the idle power of the fuel cell represents the power which can be output by the electric equipment under the condition that the electric equipment does not work at all in a starting state; the power change rate of the fuel cell indicates the power change rate of the fuel cell, and in practical applications, the power change rate may include an up-load rate (power up-load rate) and a down-load rate (power down-load rate).

The allowable interaction power of the power battery can comprise allowable charging power and allowable discharging power, and the allowable interaction power of the power battery can assist electric equipment to realize power control, namely, the output power of the fuel battery is controlled according to the allowable interaction power of the power battery; the control duration may be a duration preset according to actual conditions, for example, determined by combining historical data and empirical values. In practical applications, the control duration of the allowable charge power and the control duration of the allowable discharge power may be different or the same, which is not limited by the present application.

Alternatively, the control duration may be determined according to an operating parameter of the electrical consumer.

For example, if the allowable interaction power is the allowable charging power, the power change rate is the load reduction rate, and the control duration of the allowable charging power of the power battery is obtained by: and determining a control duration corresponding to the allowable charging power according to a preset time constant, the maximum net output power, the idle power and the load reduction rate. The control duration of the allowable charge power of the power battery can be calculated by using the formula (1).

（1）

Wherein, the liquid crystal display device comprises a liquid crystal display device,t ₁ indicating control of allowable charge power of power batteryThe length of the steel wire is longer than the length,P ₁ indicating the maximum net output power of the fuel cell,P ₂ indicating the idle power of the fuel cell,k ₁ the load-shedding rate of the fuel cell,t ₀ indicating a preset time constant.

If the allowable interactive power is the allowable discharge power, the power change rate is the load-lifting rate, and the control duration of the allowable discharge power of the power battery is obtained by the following steps: and determining a control duration corresponding to the allowable discharge power according to a preset time constant, the maximum net output power, the idle power and the load-lifting rate. The control duration of the allowable discharge power of the power battery can be calculated by using the formula (2).

（2）

Wherein, the liquid crystal display device comprises a liquid crystal display device,t ₂ a control period indicating the allowable discharge power of the power cell,k ₂ load-shedding rate of fuel cells.

S1102, obtaining the allowable interaction power of the power battery in the control time.

The allowable interaction power includes an allowable charge power and an allowable discharge power, wherein the allowable charge power of the power battery within the control period represents an allowable maximum charge power of the power battery within the control period, and the allowable discharge power of the power battery within the control period represents an allowable maximum discharge power of the power battery within the control period.

The method for obtaining the allowable charge power and the allowable discharge power of the power battery in the control time length can be that the allowable charge power and the allowable discharge power sent by the battery management system are directly obtained or received from the battery management system; specifically, a sensor in the battery management system collects the allowable charge power and the allowable discharge power of the power battery in the control time period, the sensor transmits the collected allowable charge power and allowable discharge power of the power battery in the control time period to the battery management system, and the controller can directly acquire the allowable charge power and allowable discharge power from the battery management system or the battery management system actively transmits the allowable charge power and the allowable discharge power to the controller.

The following describes how to determine the status of the powered device by an embodiment, which in one embodiment includes the following steps: detecting a braking signal of the electric equipment; if the electric equipment has a braking signal, determining that the state of the electric equipment is a braking state; and if the electric equipment does not have a braking signal, determining that the state of the electric equipment is a non-braking state.

When the electric equipment is braked, a braking signal is generated, so that when the state of the electric equipment is judged, whether the electric equipment is in a braking state can be judged according to whether the braking signal exists in the electric equipment.

If the electric equipment is detected to have a braking signal, determining that the state of the electric equipment is in a braking state; and if the braking signal of the electric equipment is not detected, determining that the state of the electric equipment is in a non-braking state.

In the power control method of the electric equipment provided by the embodiment of the application, the braking signal of the electric equipment is detected, if the electric equipment has the braking signal, the state of the electric equipment is determined to be a braking state, and if the electric equipment does not have the braking signal, the state of the electric equipment is determined to be a non-braking state. In the method, the braking signal is used as a judging basis for judging whether the electric equipment has braking, so that the state of the electric equipment is more accurately determined.

In an embodiment, the present application further provides a power control method of an electric device, taking the electric device as a hydrogen fuel cell automobile, as shown in fig. 12a and fig. 12b, where fig. 12a shows power control performed when the hydrogen fuel cell automobile has a brake signal, and fig. 12b shows power control performed when the hydrogen fuel cell automobile has no brake signal. It should be noted that, for clarity of illustration in fig. 12a and fig. 12b, fig. 12a and fig. 12b are only brief illustrations of execution logic of each step, and specific steps included in this embodiment are described below by taking fig. 12a and fig. 12b as examples:

S1201, detecting a braking signal of the hydrogen fuel cell automobile; if the hydrogen fuel cell vehicle has a brake signal, step S1202 is performed, otherwise step S1213 is performed.

S1202, if the running speed of the hydrogen fuel cell vehicle is less than or equal to the preset speed threshold, step S1203 is executed, otherwise, step S1208 is executed.

S1203, if the duration of the running speed of the hydrogen fuel cell vehicle is less than or equal to the preset speed threshold is less than the preset time threshold, step S1204 is executed, otherwise, step S1205 is executed.

S1204, determining that the hydrogen fuel cell automobile is in a temporary stop working condition, and keeping the power control of the hydrogen fuel cell automobile in a current state.

S1205, judging whether the current discharging power of the power battery is greater than or equal to the current allowable continuous charging power, if yes, executing step S1206, otherwise, executing step S1207.

The hydrogen fuel cell vehicle is in a long-stop condition in the case where the running speed of the hydrogen fuel cell vehicle is less than or equal to the duration of the preset speed threshold and greater than or equal to the preset time threshold.

S1206, it is determined that the power control of the hydrogen fuel cell automobile remains in the current state.

And S1207, reducing the hydrogen stack power until the current discharging power of the power battery is greater than or equal to the current allowable continuous charging power.

S1208, if the duration that the running speed of the hydrogen fuel cell vehicle is greater than the speed threshold is less than the time threshold, step S1209 is performed, otherwise, step S1210 is performed.

S1209, determining that the hydrogen fuel cell automobile is in a rapid deceleration working condition, and keeping the power control of the hydrogen fuel cell automobile in a current state.

S1210, judging whether the current discharging power of the power battery is smaller than or equal to the allowable charging power in the control duration, if yes, executing step S1211, otherwise, executing step S1212.

And under the condition that the running speed of the hydrogen fuel cell automobile is longer than the duration time of the speed threshold value and is longer than or equal to the time threshold value, the hydrogen fuel cell automobile is in a long downhill working condition.

S1211, it is determined that the power control of the hydrogen fuel cell automobile remains in the current state.

S1212, reducing the hydrogen stack power until the current discharge power of the power cell is less than or equal to the allowable charge power.

S1213, determining whether the current discharge power of the power battery is less than or equal to the allowable discharge power within the control duration, if so, executing step S1214, otherwise, executing step S1215.

S1214, determining that the hydrogen fuel cell automobile is in a stable running condition, and keeping the power control of the hydrogen fuel cell automobile in a current state.

S1215, determining whether the duration of the current discharge power of the power battery being greater than the allowable discharge power within the control duration is less than the time threshold, if so, executing step S1216, otherwise, executing step S1217.

And under the condition that the duration time of the allowable discharge power is greater than or equal to the time threshold value, the hydrogen fuel cell automobile is in an overtaking or climbing working condition.

S1216, determining that the hydrogen fuel cell automobile is under a sudden acceleration condition, and keeping the power control of the hydrogen fuel cell automobile in a current state.

And S1217, increasing the hydrogen stack power until the current discharge power of the power battery is less than or equal to the allowable discharge power.

It should be understood that, although the steps in the flowcharts related to the embodiments described above are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the flowcharts described in the above embodiments may include a plurality of steps or a plurality of stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily performed sequentially, but may be performed alternately or alternately with at least some of the other steps or stages.

Based on the same inventive concept, the embodiment of the application also provides a power control device of the electric equipment for realizing the power control method of the electric equipment. The implementation scheme of the device for solving the problem is similar to the implementation scheme described in the above method, so the specific limitation in the embodiments of the power control device for one or more electric devices provided below may refer to the limitation of the power control method for the electric device hereinabove, and will not be repeated herein.

In one embodiment, as shown in fig. 13, there is provided a power control apparatus 1300 of a powered device, including: an acquisition module 1301 and a control module 1302, wherein:

an obtaining module 1301, configured to obtain allowed interaction power of the power battery within a control duration;

a control module 1302 for controlling the output power of the fuel cell based on the allowed interaction power.

In one embodiment, the control module 1302 includes:

the speed acquisition unit is used for acquiring the running speed of the electric equipment under the condition that the electric equipment is in a braking state;

and a first control unit for controlling the output power of the fuel cell according to the running speed, the current discharge power of the power cell and the allowable charge power.

In one embodiment, the first control unit comprises:

an obtaining subunit, configured to obtain a first duration time when the running speed is greater than the speed threshold if the running speed is greater than a preset speed threshold;

and the control subunit is used for controlling the output power of the fuel cell according to the relation between the current discharging power and the allowable charging power if the first duration time is greater than or equal to a first time threshold value.

In one embodiment, the control subunit comprises:

a first determining subunit, configured to determine that the output power of the fuel cell remains in a current state if the current discharge power is less than or equal to the allowable charge power; and/or the number of the groups of groups,

and the first regulation subunit is used for regulating the output power of the fuel cell until the current discharge power is smaller than or equal to the allowable charge power if the current discharge power is larger than the allowable charge power.

In one embodiment, the first adjustment subunit comprises:

the first generation subunit is used for generating a request for reducing the power of the fuel cell according to a preset power adjustment strategy;

and a second adjustment subunit, configured to send the request for reducing the power of the fuel cell to a fuel controller, so as to instruct the fuel controller to reduce the output power of the fuel cell until the current discharge power is less than or equal to the allowable charge power.

In one embodiment, the apparatus 1300 further comprises:

and the first determining module is used for determining that the output power of the fuel cell keeps the current state if the first duration is smaller than the first time threshold.

In one embodiment, the control module 1302 includes:

the first determining unit is used for determining that the output power of the fuel cell keeps the current state if the current discharge power of the power cell is smaller than or equal to the allowable discharge power under the condition that the electric equipment is in a non-braking state; and/or the number of the groups of groups,

and the adjusting unit is used for acquiring a second duration time when the current discharge power is larger than the allowable discharge power if the current discharge power is larger than the allowable discharge power, and adjusting the output power of the fuel cell until the current discharge power is smaller than or equal to the allowable discharge power if the second duration time is larger than or equal to a second time threshold value.

In one embodiment, the adjustment unit comprises:

the second generation subunit is used for generating a request for increasing the power of the fuel cell according to a preset power adjustment strategy;

and a third adjustment subunit, configured to send the request for increasing the power of the fuel cell to the fuel controller, so as to instruct the fuel controller to increase the output power of the fuel cell until the current discharge power is less than or equal to the allowable discharge power.

In one embodiment, the apparatus 1300 further comprises:

and the second determining module is used for determining that the output power of the fuel cell keeps the current state if the second duration is smaller than the second time threshold.

In one embodiment, the apparatus 1300 further comprises:

the time acquisition unit is used for acquiring a third duration time when the running speed of the electric equipment is smaller than or equal to a preset speed threshold value under the condition that the electric equipment is in a braking state;

and the second control unit is used for controlling the output power of the fuel cell according to the relation between the current discharging power and the current allowable continuous charging power of the power cell if the third duration is greater than or equal to a third time threshold.

In one embodiment, the second control unit comprises:

a fourth adjustment subunit, configured to determine that the output power of the fuel cell remains in a current state if the current discharge power is greater than or equal to the current allowable continuous charging power; and/or if the current discharge power is smaller than the current allowable continuous charge power, adjusting the output power of the fuel cell until the current discharge power is greater than or equal to the current allowable continuous charge power.

In one embodiment, the fourth adjustment subunit comprises:

a third generating subunit, configured to generate a request for reducing the power of the fuel cell according to a preset power adjustment policy;

and a fifth adjustment subunit, configured to send the request for reducing the power of the fuel cell to the fuel controller, so as to instruct the fuel controller to reduce the output power of the fuel cell until the current discharge power is greater than or equal to the current allowable continuous charging power.

In one embodiment, the apparatus 1300 further comprises:

and the second determining unit is used for determining that the output power of the fuel cell keeps the current state if the third duration is smaller than the third time threshold.

In one embodiment, the acquisition module 1301 includes:

a third determining unit configured to determine the control duration according to a maximum net output power, an idle power, and a power change rate of the fuel cell;

and the power acquisition unit is used for acquiring the allowable interaction power of the power battery in the control duration.

In one embodiment, the third determining unit comprises:

and the second determination subunit is used for determining the control duration corresponding to the allowable charging power according to the preset time constant, the maximum net output power, the idle power and the load reduction rate.

In one embodiment, the third determining unit comprises:

and the third determination subunit is used for determining the control duration corresponding to the allowable discharge power according to the preset time constant, the maximum net output power, the idle power and the load-lifting rate.

The modules in the power control device of the electric equipment can be realized in whole or in part through software, hardware and a combination thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.

In one embodiment, a computer device is provided, which may be a server, and the internal structure of which may be as shown in fig. 14. The computer device includes a processor, a memory, an Input/Output interface (I/O) and a communication interface. The processor, the memory and the input/output interface are connected through a system bus, and the communication interface is connected to the system bus through the input/output interface. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The database of the computer device is used for storing power control data of the electric equipment. The input/output interface of the computer device is used to exchange information between the processor and the external device. The communication interface of the computer device is used for communicating with an external terminal through a network connection. The computer program, when executed by a processor, implements a method for power control of a powered device.

It will be appreciated by those skilled in the art that the structure shown in fig. 14 is merely a block diagram of a portion of the structure associated with the present inventive arrangements and is not limiting of the computer device to which the present inventive arrangements are applied, and that a particular computer device may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components.

In an embodiment, there is also provided a computer device comprising a memory and a processor, the memory having stored therein a computer program, the processor implementing the steps of the method embodiments described above when the computer program is executed.

The implementation principle and technical effect of each step implemented by the processor in the embodiment of the present application are similar to those of the power control method of the electric equipment, and are not described herein.

In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored which, when executed by a processor, carries out the steps of the method embodiments described above.

The implementation principle and technical effect of each step implemented when the computer program is executed by the processor in the embodiment of the present application are similar to those of the power control method of the electric equipment, and are not described herein again.

In an embodiment, a computer program product is provided, comprising a computer program which, when executed by a processor, implements the steps of the method embodiments described above.

It should be noted that, the data (including, but not limited to, data for analysis, stored data, displayed data, etc.) related to the present application are all information and data authorized by the user or fully authorized by each party, and the collection, use and processing of the related data need to comply with the related laws and regulations and standards of the related country and region.

Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, database, or other medium used in embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high density embedded nonvolatile Memory, resistive random access Memory (ReRAM), magnetic random access Memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric Memory (Ferroelectric Random Access Memory, FRAM), phase change Memory (Phase Change Memory, PCM), graphene Memory, and the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, and the like. By way of illustration, and not limitation, RAM can be in the form of a variety of forms, such as Static Random access memory (Static Random access memory AccessMemory, SRAM) or dynamic Random access memory (Dynamic Random Access Memory, DRAM), and the like. The databases referred to in the embodiments provided herein may include at least one of a relational database and a non-relational database. The non-relational database may include, but is not limited to, a blockchain-based distributed database, and the like. The processor referred to in the embodiments provided in the present application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic unit, a data processing logic unit based on quantum computing, or the like, but is not limited thereto.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of the application should be assessed as that of the appended claims.

Claims

1. A method of controlling power of a powered device, the powered device comprising a power cell and a fuel cell, the method comprising:

acquiring the allowable interaction power of the power battery in the control time period; the allowed interaction power comprises allowed charging power and allowed discharging power;

And controlling the output power of the fuel cell according to the current discharge power of the power cell and the allowable interaction power.

2. The method of claim 1, wherein said controlling the output power of the fuel cell based on the current discharge power of the power cell and the allowable interaction power comprises:

acquiring the running speed of the electric equipment under the condition that the electric equipment is in a braking state;

and controlling the output power of the fuel cell according to the running speed, the current discharging power of the power cell and the allowable charging power.

3. The method according to claim 2, wherein said controlling the output power of the fuel cell in accordance with the running speed, the current discharge power of the power cell, and the allowable charge power includes:

and if the first duration is greater than or equal to a first time threshold, controlling the output power of the fuel cell according to the relation between the current discharging power and the allowable charging power.

4. A method according to claim 3, wherein said controlling the output power of the fuel cell in accordance with the relation between the present discharge power and the allowable charge power comprises:

if the current discharging power is smaller than or equal to the allowable charging power, determining that the output power of the fuel cell keeps the current state; and/or the number of the groups of groups,

5. The method of claim 4, wherein said adjusting the output power of the fuel cell until the current discharge power is less than or equal to the allowable charge power comprises:

and sending the request for reducing the power of the fuel cell to a fuel controller to instruct the fuel controller to reduce the output power of the fuel cell until the current discharging power is less than or equal to the allowable charging power.

6. A method according to claim 3, characterized in that the method further comprises:

And if the first duration is smaller than the first time threshold, determining that the output power of the fuel cell is kept in the current state.

7. The method according to any one of claims 1-6, wherein said controlling the output power of the fuel cell in accordance with the current discharge power of the power cell and the allowable interaction power comprises:

under the condition that the electric equipment is in a non-braking state, if the current discharging power of the power battery is smaller than or equal to the allowable discharging power, determining that the output power of the fuel battery is kept in the current state; and/or the number of the groups of groups,

8. The method of claim 7, wherein said adjusting the output power of the fuel cell until the current discharge power is less than or equal to the allowable discharge power comprises:

the increase fuel cell power request is sent to a fuel controller to instruct the fuel controller to increase the output power of the fuel cell until the current discharge power is less than or equal to the allowable discharge power.

9. The method of claim 7, wherein the method further comprises:

and if the second duration is smaller than the second time threshold, determining that the output power of the fuel cell is kept in the current state.

10. The method according to any one of claims 1-6, further comprising:

if the running speed of the electric equipment is smaller than or equal to a preset speed threshold value under the condition that the electric equipment is in a braking state, acquiring a third duration time when the running speed is smaller than or equal to the speed threshold value;

and if the third duration is greater than or equal to a third time threshold, controlling the output power of the fuel cell according to the relation between the current discharging power and the current allowable continuous charging power of the power cell.

11. The method according to claim 10, wherein the controlling the output power of the fuel cell according to the relation between the current discharge power and the current allowable continuous charge power of the power cell includes:

If the current discharging power is greater than or equal to the current allowable continuous charging power, determining that the output power of the fuel cell is kept in a current state; and/or the number of the groups of groups,

and if the current discharging power is smaller than the current continuously-allowed charging power, adjusting the output power of the fuel cell until the current discharging power is larger than or equal to the current continuously-allowed charging power.

12. The method of claim 11, wherein said adjusting the output power of the fuel cell until the current discharge power is greater than or equal to the current allowable continuous charge power comprises:

the request to reduce the power of the fuel cell is sent to a fuel controller to instruct the fuel controller to reduce the output power of the fuel cell until the current discharge power is greater than or equal to the current allowable continuous charge power.

13. The method according to claim 10, wherein the method further comprises:

and if the third duration is smaller than the third time threshold, determining that the output power of the fuel cell is kept in the current state.

14. The method of claim 1, wherein the allowed interaction power comprises an allowed charging power, and wherein the rate of power change comprises a rate of load shedding; said determining said control duration from a maximum net output power, a power-off and a rate of power change of said fuel cell comprising:

and determining the control duration according to a preset time constant, the maximum net output power, the idle power and the load reduction rate.

15. The method of claim 1, wherein the allowed interaction power comprises an allowed discharge power, and wherein the rate of power change comprises a rate of load rise; said determining said control duration from a maximum net output power, a power-off and a rate of power change of said fuel cell comprising:

and determining the control duration according to a preset time constant, the maximum net output power, the idle power and the load-lifting rate.

16. A power control device for an electrical consumer, the electrical consumer comprising a power cell and a fuel cell, the device comprising:

the acquisition module is used for determining control duration according to the maximum net output power, the idle power and the power change rate of the fuel cell; acquiring the allowable interaction power of the power battery in the control time period; the allowed interaction power comprises allowed charging power and allowed discharging power;

And the control module is used for controlling the output power of the fuel cell according to the current discharge power of the power cell and the allowable interaction power.

17. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any one of claims 1 to 15 when the computer program is executed.

18. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 15.