阅读说明：本技术 燃料电池供电系统、方法及存储介质 (Fuel cell power supply system, method and storage medium ) 是由 曹桂军 王博 于 2020-12-30 设计创作，主要内容包括：本发明公开了一种燃料电池供电系统、方法及存储介质,燃料电池供电系统包括：ON档电母线；常电母线；电源母线；地线；用电器一端连接电源母线另一端连接地线；开关一端连接常电母线另一端连接电源母线；控制模块的第一引脚与ON档电母线电连接、第二引脚和常电母线连接,第三引脚与地线连接,控制模块根据第一引脚和第二引脚输入的电平控制第四引脚输出的高电平或低电平；驱动模块电连接控制模块的第四引脚,且用于控制开关闭合或打开。本发明通过监测第一引脚和第二引脚输入的电平再控制第四引脚输出的电平,以控制用电器断电或保持通电状态,则用电器断电前有足够的时间进行停机吹扫流程,保证系统的稳定。(The invention discloses a fuel cell power supply system, a method and a storage medium, wherein the fuel cell power supply system comprises: an ON shift electric bus; a normal-electricity bus; a power bus; a ground wire; one end of the electrical appliance is connected with the power bus, and the other end of the electrical appliance is connected with the ground wire; one end of the switch is connected with the normal-current bus, and the other end of the switch is connected with the power supply bus; a first pin of the control module is electrically connected with the ON gear electric bus, a second pin of the control module is connected with the normal electric bus, a third pin of the control module is connected with the ground wire, and the control module controls a high level or a low level output by a fourth pin according to levels input by the first pin and the second pin; the driving module is electrically connected with the fourth pin of the control module and is used for controlling the switch to be closed or opened. According to the invention, the level input by the first pin and the level input by the second pin are monitored, and then the level output by the fourth pin is controlled, so that the power-off or power-on state of the electrical appliance is controlled, and the electrical appliance has enough time to perform a shutdown purging process before the power-off, so that the stability of the system is ensured.)

1. A fuel cell power supply system, comprising:

an ON shift electric bus;

a normal-electricity bus;

a power bus;

a ground wire;

one end of the electrical appliance is connected with the power bus, and the other end of the electrical appliance is connected with the ground wire;

one end of the switch is connected with the normal-current bus, and the other end of the switch is connected with the power supply bus;

a control module, the control module comprising: the control module comprises a first pin, a second pin, a third pin and a fourth pin, wherein the first pin is electrically connected with the ON gear electric bus, the second pin is connected with the normal electric bus, the third pin is connected with the ground wire, and the control module controls the high level or the low level output by the fourth pin according to the high level or the low level input by the first pin and the second pin;

and the driving module is electrically connected with the fourth pin of the control module and is used for controlling the switch to be switched on or switched off according to the high level or the low level output by the fourth pin.

2. The power supply system of claim 1, wherein when the first pin of the control module inputs a high level, the operating state of the control module is a wake-up state, if the second pin of the control module inputs a high level, the control module controls the fourth pin to output a high level, and the driving module controls the switch to be closed according to the high level input by the fourth pin.

3. The power supply system of claim 2, wherein when the first pin of the control module inputs a low level, the operating state of the control module is a sleep state, and when the fourth pin of the control module outputs a low level, the driving module controls the switch to be turned on according to the low level input by the fourth pin.

4. A fuel cell power supply system according to any one of claims 1 to 3, wherein a first fuse is electrically connected between the first pin of the control module and the ON-speed bus, and a second fuse is electrically connected between the second pin of the control module and the normal electric bus.

5. A fuel cell power supply system according to any one of claims 1 to 3, wherein a third fuse is electrically connected between said power bus and said consumer.

6. A fuel cell power supply system according to any one of claims 1 to 3, wherein the drive module includes: and one end of a coil of the relay is connected with the other end of the normal-current bus and connected with the fourth pin of the control module, and a normally open contact of the relay is electrically connected with the switch.

7. A fuel cell power supply system according to any one of claims 1 to 3, characterized by further comprising: and the self-checking module performs self-checking on the control module to obtain a self-checking result when the working state of the control module is an awakening state, and the control module reports fault information to the vehicle control unit or controls the fourth pin to output a high level according to the self-checking result.

8. A fuel cell power supply method, characterized by comprising:

the control module detects that a first pin connected with an ON gear electric bus inputs a high level and changes the working state into an awakening state;

the control module controls a fourth pin to output a high level when detecting that a second pin connected with a normal electric bus inputs the high level;

and the driving module controls a power supply bus connected with an electric appliance to be connected with the normal power bus according to the high level input by the fourth pin.

9. The fuel cell power supply method according to claim 8, further comprising:

the control module carries out self-checking on the control module according to the fact that the working state is an awakening state so as to obtain a self-checking result;

and the control module reports fault information to the vehicle control unit or controls a fourth pin to output high level according to the self-checking result.

10. A computer-readable storage medium storing computer-executable instructions for causing a computer to perform the fuel cell power supply method according to any one of claims 8 to 9.

Technical Field

The present invention relates to the field of fuel cell technologies, and in particular, to a fuel cell power supply system, method, and storage medium.

Background

Along with energy conservation and emission reduction, more and more electric automobiles replace the traditional internal combustion engine. However, as the market volume of electric vehicles increases, the problems of aging of battery packs, spontaneous combustion, disposal of discarded batteries and the like also follow.

Many core electrical appliances other than the stack exist inside the fuel cell system, and the core electrical appliances include an air compressor, a water pump, a hydrogen pump, and the like. The power supply of the core electrical appliances is generally switched by adopting a rotating key so as to realize the power-on and power-off of the core electrical appliances. But the rotary key only has 3 grades of low-voltage voltages, namely the whole vehicle is normally electrified (KL1+), the whole vehicle is ACC (KL30) and the whole vehicle is ON (KL 15). However, due to the particularity of the fuel cell system, the power cannot be directly supplied from the ACC and the ON in the whole vehicle, if the power is supplied to the fuel cell system, the fuel cell system can be directly and suddenly stopped and powered OFF after a driver stops the vehicle and rotates a key to an OFF gear, the normal shutdown purging process cannot be carried out, and the damage to the system is very large. The normal power of the whole vehicle can not be directly taken, so that the static power consumption of the whole vehicle is increased for a long time, the storage battery is insufficient, and the fuel cell system is always in a standby state and cannot be in a normal sleep state.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a fuel cell power supply system which can respond to the instruction of the system in real time and ensure the reliability and stability of power supply.

The invention also provides a power supply method of the fuel cell.

The invention also provides a computer readable storage medium.

In a first aspect, an embodiment of the present invention provides a fuel cell power supply system, including:

an ON shift electric bus;

a normal-electricity bus;

a power bus;

a ground wire;

one end of the electrical appliance is connected with the power bus, and the other end of the electrical appliance is connected with the ground wire;

one end of the switch is connected with the normal-current bus, and the other end of the switch is connected with the power supply bus;

a control module, the control module comprising: the control module comprises a first pin, a second pin, a third pin and a fourth pin, wherein the first pin is electrically connected with the ON gear electric bus, the second pin is connected with the normal electric bus, the third pin is connected with the ground wire, and the control module controls the high level or the low level output by the fourth pin according to the high level or the low level input by the first pin and the second pin;

and the driving module is electrically connected with the fourth pin of the control module and is used for controlling the switch to be switched on or switched off according to the high level or the low level output by the fourth pin.

The fuel cell power supply system provided by the embodiment of the invention at least has the following beneficial effects: the level input by the first pin and the second pin is monitored through the control module, the control module controls the fourth pin to output high level or low level according to the NO-grade electric bus and the normal electric bus, the driving module controls the switch to be closed or opened according to the high level or the low level input by the fourth pin, and then whether the power bus and the normal electric bus of the electric appliance are connected or not is controlled, so that the electric appliance is controlled to be powered off or keep a powered-on state, enough time is provided for shutdown purging before the power off of the electric appliance, and the stability of the system is ensured.

According to the fuel cell power supply system in other embodiments of the present invention, when the first pin of the control module inputs a high level, the operating state of the control module is an awake state, if the second pin of the control module inputs a high level, the control module controls the fourth pin to output a high level, and the driving module controls the switch to be turned on according to the high level input by the fourth pin.

According to the fuel cell power supply system of other embodiments of the present invention, when the first pin of the control module inputs a low level, the operating state of the control module is a sleep state, and the fourth pin of the control module outputs a low level, the driving module controls the switch to be turned on according to the low level input by the fourth pin.

According to other embodiments of the present invention, a first fuse is electrically connected between the first pin of the control module and the ON-gear electrical bus, and a second fuse is electrically connected between the second pin of the control module and the normal electrical bus.

According to other embodiments of the fuel cell power system of the present invention, a third fuse is electrically connected between the power bus and the electrical consumer.

According to further embodiments of the present invention, a fuel cell power supply system, the driving module includes: and one end of a coil of the relay is connected with the other end of the normal-current bus and connected with the fourth pin of the control module, and a normally open contact of the relay is electrically connected with the switch.

Fuel cell power systems according to further embodiments of the present invention further include: and the self-checking module performs self-checking on the control module to obtain a self-checking result when the working state of the control module is an awakening state, and the control module reports fault information to the vehicle control unit or controls the fourth pin to output a high level according to the self-checking result.

In a second aspect, an embodiment of the present invention provides a fuel cell power supply method, including:

the control module detects that a first pin connected with an ON gear electric bus inputs a high level and changes the working state into an awakening state;

the control module controls a fourth pin to output a high level when detecting that a second pin connected with a normal electric bus inputs the high level;

and the driving module controls a power supply bus connected with an electric appliance to be connected with the normal power bus according to the high level input by the fourth pin.

The power supply method of the fuel cell provided by the embodiment of the invention at least has the following beneficial effects: the level input by the first pin and the second pin is monitored through the control module, the control module controls the fourth pin to output high level or low level according to the NO-grade electric bus and the normal electric bus, the driving module controls the switch to be closed or opened according to the high level or the low level input by the fourth pin, and then whether the power bus and the normal electric bus of the electric appliance are connected or not is controlled, so that the electric appliance is controlled to be powered off or keep a powered-on state, enough time is provided for shutdown purging before the power off of the electric appliance, and the stability of the system is ensured.

Fuel cell power supply methods according to further embodiments of the invention further include:

the control module carries out self-checking on the control module according to the fact that the working state is an awakening state so as to obtain a self-checking result;

and the control module reports fault information to the vehicle control unit or controls a fourth pin to output high level according to the self-checking result.

In a third aspect, an embodiment of the invention provides a computer-readable storage medium having stored thereon computer-executable instructions for causing a computer to perform the fuel cell power method of the first aspect.

Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

FIG. 1 is a schematic circuit diagram of one embodiment of a fuel cell system according to an embodiment of the present invention;

FIG. 2 is a flow chart of another embodiment of a fuel cell method according to an embodiment of the present invention;

fig. 3 is a flow chart of another embodiment of a fuel cell method in an embodiment of the present invention.

Reference numerals: 100. an ON shift electric bus; 110. a first fuse; 200. a normal-electricity bus; 210. a second fuse; 300. a ground wire; 400. an electrical appliance; 410. a third fuse; 500. a switch; 600. a control module; 610. a first pin; 620. a second pin; 630. a third pin; 640. a fourth pin; 700. a drive module; 800. and a self-checking module.

Detailed Description

The concept and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments to fully understand the objects, features and effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention.

In the description of the present invention, if an orientation description is referred to, for example, the orientations or positional relationships indicated by "upper", "lower", "front", "rear", "left", "right", etc. are based on the orientations or positional relationships shown in the drawings, only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. If a feature is referred to as being "disposed," "secured," "connected," or "mounted" to another feature, it can be directly disposed, secured, or connected to the other feature or indirectly disposed, secured, connected, or mounted to the other feature.

In the description of the embodiments of the present invention, if "a number" is referred to, it means one or more, if "a plurality" is referred to, it means two or more, if "greater than", "less than" or "more than" is referred to, it is understood that the number is not included, and if "greater than", "lower" or "inner" is referred to, it is understood that the number is included. If reference is made to "first" or "second", this should be understood to distinguish between features and not to indicate or imply relative importance or to implicitly indicate the number of indicated features or to implicitly indicate the precedence of the indicated features.

In a first aspect, referring to fig. 1, an embodiment of the present invention discloses a fuel cell power supply system, including: the system comprises an ON gear electric bus 100, a normal electric bus 200, a ground wire 300, an electrical appliance 400, a switch 500, a control module 600 and a driving module 700; one end of the electrical appliance 400 is connected with a power bus, and the other end is connected with the ground wire 300; one end of the switch 500 is connected with the normal electric bus 200, and the other end is connected with the power supply bus; the control module 600 includes: the power supply comprises a first pin 610, a second pin 620, a third pin 630 and a fourth pin 640, wherein the first pin 610 is electrically connected with an ON gear electric bus 100, the second pin 620 is connected with a normal electric bus 200, the third pin 630 is connected with a ground wire 300, and the control module 600 controls the high level or the low level output by the fourth pin 640 according to the high level or the low level input by the first pin 610 and the second pin 620; the fourth pin 640 of the control module 600 is electrically connected, and is used for controlling the switch 500 to be closed or opened according to the high level or the low level output by the fourth pin 640.

The electrical appliance 400 includes an air compressor, a water pump, a hydrogen pump, and the like. The ON-gear electric bus 100 is a bus to which the entire vehicle key is turned to the ON-gear, while the normal electric bus 200 is a low-voltage bus of the OFF-gear, and the power supply bus is a bus to which the electrical appliance 400 supplies power. One end of the switch 500 is connected with the normal electric bus 200, the other end is connected with the power supply bus, and one end of the electrical appliance 400 is connected with the power supply bus, and the other end is connected with the ground wire 300. When the control module 600 controls the fourth pin 640 to output a high level or a low level according to the high level or the low level input by the first pin 610 and the second pin 620, the driving module 700 controls the switch 500 to be closed according to the high level or the low level input by the fourth pin 640, if the switch 500 is closed, the power bus is communicated with the normal power bus 200, and the electrical appliance 400 is not connected to the power supply to realize power failure. If the switch 500 is turned off, the power bus and the normal power bus 200 are turned off, and the electrical appliance 400 is connected with the power bus to realize energization. Therefore, the control module 600 is arranged to control the switch 500 to be turned on or off, so as to realize the power-off control of the electrical appliance 400, prevent the system from being suddenly stopped and powered off and being incapable of entering a normal shutdown purging process, and further prevent the damage of the system.

In some embodiments, when the first pin 610 of the control module 600 inputs a high level, the operating state of the control module 600 is awake, if the second pin 620 of the control module 600 inputs a high level, the control module 600 controls the fourth pin 640 to output a high level, and the driving module 700 controls the switch 500 to be closed according to the high level input by the fourth pin 640.

The control module 600 detects that the first pin 610 inputs a high level or a low level, if it is detected that the first pin 610 inputs a high level, it is proved that the user turns to an ON gear, the control module 600 is connected to the ON gear electrical bus 100, the working state of the control module 600 is an awake state, and the control module 600 starts to monitor whether the second pin 620 has an input. If the second pin 620 inputs a high level, the control module 600 controls the fourth pin 640 to output the high level according to the high level input by the second pin 620, and the driving module 700 controls the switch 500 to be closed according to the high level input by the fourth pin 640, so that the electrical appliance 400 starts to power off after the switch 500 is closed. If the second pin 620 inputs a low level, the control module 600 controls the fourth pin 640 to output a low level according to the low level input by the second pin 620, and the switch 500 keeps an off state, so that the electrical appliance 400 is still in an on state. The control module 600 is arranged to control the level of the fourth pin 640 according to the level input by the first pin 610 and then according to the level input by the second pin 620, so that the switch 500 is not turned on or off at a time, sufficient time can be provided for power failure, and the system can enter a normal shutdown purging process.

Wherein, fuel cell is proton exchange membrane fuel cell, and fuel cell sets up hydrogen pipeline and air conduit, lets in hydrogen to the pile through the hydrogen pipeline, lets in the air to the pile through the air conduit, and the oxygen in hydrogen and the air produces the electric energy at the pile reaction, and generates the by-product water, can discharge fuel cell together along with the tail exhaust body at the in-process water that proton exchange membrane fuel cell reacts, but just can not sweep fuel cell when fuel cell shuts down again. If the water generated without purging is accumulated inside the fuel cell while the fuel cell is stopped, the fuel cell is degraded and the next smooth start of the fuel cell is not effected.

The conventional method for solving the problems is to continuously introduce air into the fuel cell for a period of time through an air pipeline when the fuel cell is stopped so as to purge the moisture of the fuel cell. However, the working environment of the fuel cell is different from the working state of the fuel cell, and the humidity of the fuel cell is different when the fuel cell is shut down each time, so that the purging time during shutdown cannot be quantized, and if the purging time is too short, the purging effect cannot be ensured; if the purge time is too long, it is wasteful. Therefore, the power-off control of the electrical appliance 400 is performed through the control module 600, so that sufficient time is provided for shutdown purging before the electrical appliance 400 is shutdown, and the purging effect is ensured.

In some embodiments, when the first pin 610 of the control module 600 inputs a low level, the operating state of the control module 600 is a sleep state, and the fourth pin 640 of the control module 600 outputs a low level, the driving module 700 controls the switch 500 to be turned on according to the low level input by the fourth pin 640.

If the control module 600 monitors that the first pin 610 inputs a low level, the working state of the control module 600 is a dormant state, the control module 600 no longer monitors the level input by the second pin 620, and regardless of whether the second pin 620 inputs a low level or a high level, the control module 600 always controls the fourth pin 640 to output a low level, and the driving module 700 controls the switch 500 to be turned off according to the low level input by the fourth pin 640, so that the electrical appliance 400 is normally connected to the power bus. Therefore, when the user does not turn the key to the ON gear, the key is directly turned to the OFF gear, so that the direct outage caused by directly earning the key to the OFF gear is avoided, the system can normally enter a shutdown purging process, and the system is prevented from being damaged.

In some embodiments, a first fuse 110 is electrically connected between the control module 600 and the first pin 610 and the ON-gear bus 100, and a second fuse 210 is electrically connected between the second pin 620 of the control module 600 and the permanent power bus 200.

One end of the first fuse 110 is connected with the first pin 610, the other end of the first fuse is connected with the ON-gear electric bus 100, instantaneous high voltage input by the ON-gear electric bus 100 can be prevented from damaging the control module 600, instantaneous high voltage damage caused by direct access of the control module 600 can be prevented, and safety and stability of the control module 600 can be improved. One end of the second fuse 210 is connected to the normally-charged bus 200, and the other end is connected to the control module 600, so as to prevent the normally-charged bus 200 from inputting an instantaneous high voltage to the control module 600 through the second pin 620, and ensure that the control module 600 stably performs control.

In some embodiments, a third fuse 410 is electrically connected between the power bus and the electrical consumer 400. If the power bus generates an instantaneous high voltage due to a short circuit and is directly input to the electrical appliance 400, the electrical appliance 400 is short-circuited to damage internal devices, so the third fuse 410 is provided, and one end of the third fuse 410 is connected to the power bus and the other end is connected to the electrical appliance 400. When the third fuse 410 is connected to an instant high voltage, the third fuse is fused to disconnect the power bus from the electrical equipment 400, so that the electrical equipment 400 can normally operate.

In some embodiments, the driving module 700 is a relay, one end of the coil of the relay is connected to the normally-open bus 200, and the other end of the coil of the relay is connected to the fourth pin 640 of the control module 600, and the normally-open contact of the relay is electrically connected to the switch 500.

The relay is connected to the fourth pin 640, when the control module 600 inputs a high level to the relay through the fourth pin 640, the control switch 500 is turned on after the relay is powered on, the normal power bus 200 is connected to the power bus, and the electrical appliance 400 is powered off. If the control module 600 inputs a low level to the relay through the fourth pin 640, and the relay control switch 500 is turned off, the normal power bus 200 and the power bus are disconnected, and the electrical appliance 400 is normally connected to the power bus. Therefore, by setting the driving module 700 as a relay, the control of the switch 500 is simple, and the operation of controlling whether the electrical appliance 400 is powered off or kept powered on is also simple.

In some embodiments, the fuel cell power system further comprises: when the self-checking module 800 is in the wake-up state according to the working state of the control module 600, the self-checking module 800 performs self-checking on the control module 600 to obtain a self-checking result, and the control module 600 reports fault information to the vehicle controller or controls the fourth pin 640 to output a high level according to the self-checking result. When the first pin 610 of the control module 600 inputs a high level and the working state of the control module 600 is an awake state, the self-checking module 800 performs self-checking on the control module 600 to obtain a self-checking result, and the control module 600 controls the fourth pin 640 to output a high level or a low level according to the self-checking result, so that the control module 600 can be controlled normally by setting the self-checking to ensure that the control module 600 can be controlled normally.

The first is to check whether a hardware sensor signal is in a specified range, if the sensor signal is lost, the self-checking result is a self-checking failure, and the control module 600 reports fault information to the vehicle control unit according to the self-checking result. The second is to check whether the electrical appliance 400 for CAN communication is on-line, if there is a CAN signal loss, the self-checking result is a self-checking failure, and the control module 600 reports the fault information to the vehicle controller according to the self-checking result. And thirdly, whether the communication with the vehicle controller is normal or not is judged, if the communication is abnormal, the self-checking result is self-checking failure, and the control module 600 reports fault information to the vehicle controller according to the self-checking result. Whether the vehicle control unit, the electrical appliance 400 and the hardware sensor connected with the control module 600 are stable or not is judged by self-checking the control module 600, so that the vehicle control unit, the electrical appliance 400 and the hardware sensor are controlled after being stable, and the control module 600 is stable in disconnection after controlling the switch 500 to be closed.

A fuel cell power supply system according to an embodiment of the present invention will be described in detail in one specific embodiment with reference to fig. 1. It is to be understood that the following description is only exemplary, and not a specific limitation of the invention.

After the control module 600 monitors that the first pin 610 inputs a high level, the operating state of the control module 600 is an awake state and monitors the level input by the second pin 620, when the ordinary power bus 200 inputs a low level to the control module 600 through the second pin 620, the fourth pin 640 of the control module 600 outputs a low level, the relay control switch 500 is turned off, and the electrical appliance 400 is connected to the power bus for normal operation. If the high level is input to the control module 600 through the second pin 620 by the normally-powered bus 200, the fourth pin 640 of the control module 600 outputs the high level, the switch 500 is controlled to be closed after the relay is connected to the high level, and after the switch 500 is closed, the normally-powered bus 200 and the power bus are connected, so that the electrical appliance 400 is powered off. When the control module 600 monitors that the first pin 610 inputs a low level, the operating state of the control module 600 is a sleep state. The second pin 620 is inactive when the high level or the low level is inputted, the fourth pin 640 of the control module 600 still outputs the low level, and the power of the electrical appliance 400 is guaranteed. The first pin 610 is monitored to be connected to a high level first and then the power off of the electrical appliance 400 is executed, so that sufficient time is provided for purging the system, and the system is guaranteed to be stably powered off.

In a second aspect, referring to fig. 2, an embodiment of the present invention discloses a fuel cell power supply method, including:

s100, detecting that a first pin connected with an ON gear electric bus inputs a high level by a control module, and changing a working state into an awakening state;

s200, when detecting that a second pin connected with a normal power bus inputs a high level, a control module controls a fourth pin to output the high level;

and S300, the driving module controls a power supply bus connected with the electric appliance to be connected with a normal power bus according to the high level input by the fourth pin.

After the first pin is monitored through the control module to input the high level, the second pin of the control module is monitored again, the condition that the first pin inputs the high level and the second pin also inputs the high level and then controls the power supply bus of the electrical appliance to be connected with the normally-powered bus is met, the electrical appliance is controlled to be powered off, the electrical appliance can enter a normal shutdown purging flow before being powered off, and the stable power-off operation of a system is ensured.

In some embodiments, referring to fig. 3, the fuel cell power method further comprises:

s400, the control module performs self-checking on the control module according to the fact that the working state is the awakening state to obtain a self-checking result;

and S500, the control module reports the fault information to the vehicle control unit or controls the fourth pin to output a high level according to the self-checking result.

The first is to check whether a hardware sensor signal is in a specified range, if the sensor signal is lost, the self-checking result is failure of self-checking, and the control module reports fault information to the vehicle control unit according to the self-checking result. And secondly, checking whether the CAN communication electric appliance is on line, if the CAN signal is lost, the self-checking result is self-checking failure, and the control module reports fault information to the whole vehicle controller according to the self-checking result. And thirdly, judging whether the communication with the vehicle control unit is normal or not, if the communication is abnormal, the self-checking result is self-checking failure, and the control module reports fault information to the vehicle control unit according to the self-checking result. Whether a vehicle control unit, an electric appliance and a hardware sensor which are connected with the control module are stable or not is judged by self-checking the control module, so that the vehicle control unit, the electric appliance and the hardware sensor are controlled after being stable, and the control module is stable in disconnection after a control switch is closed.

The specific operation process of the fuel cell power supply method refers to the fuel cell power supply system of the first aspect, and is not described herein again.

In a third aspect, embodiments of the present invention disclose a computer-readable storage medium having stored thereon computer-executable instructions for causing a computer to perform a fuel cell power supply method as in the second aspect.

The above-described embodiments of the apparatus are merely illustrative, wherein the units illustrated as separate components may or may not be physically separate, i.e. may be located in one place, or may also be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.

One of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.