Cold start method, system, electronic equipment and storage medium
阅读说明：本技术 一种冷启动方法、系统、电子设备及存储介质 (Cold start method, system, electronic equipment and storage medium ) 是由 张擘 齐洪峰 梁瑜 孙帮成 李明高 于 2019-11-01 设计创作，主要内容包括：本发明实施例公开了一种冷启动方法、系统、电子设备及存储介质,所述方法包括：当冷启动控制器接收到冷启动指令时,由空气增压装置控制器控制空气增压装置对空气进行压缩处理；空气增压装置将压缩处理后的热空气,输送至氢氧电化学反应装置,以通过热空气对氢氧电化学反应装置进行升温处理；冷启动控制器确定对空气进行压缩处理产生的空气压缩热量,及对氢氧电化学反应装置进行冷启动所需的启动热量,并判断空气压缩热量是否大于或等于启动热量；若空气压缩热量大于或等于启动热量,气体输送装置则向氢氧电化学反应装置中通入氢气,以使氢氧电化学反应装置进行电化学反应。采用本发明可以提高氢氧电化学反应装置的工作效率。(The embodiment of the invention discloses a cold start method, a cold start system, electronic equipment and a storage medium, wherein the method comprises the following steps: when the cold start controller receives a cold start instruction, the air supercharging device controller controls the air supercharging device to compress air; the air supercharging device conveys the compressed hot air to the oxyhydrogen electrochemical reaction device so as to heat the oxyhydrogen electrochemical reaction device through the hot air; the cold start controller determines the air compression heat generated by compressing the air and the starting heat required by cold start of the oxyhydrogen electrochemical reaction device, and judges whether the air compression heat is greater than or equal to the starting heat; if the heat of air compression is larger than or equal to the starting heat, the gas conveying device introduces hydrogen into the oxyhydrogen electrochemical reaction device so as to enable the oxyhydrogen electrochemical reaction device to carry out electrochemical reaction. The invention can improve the working efficiency of the oxyhydrogen electrochemical reaction device.)
1. A cold start method, comprising:
when the cold start controller receives a cold start instruction of the oxyhydrogen electrochemical reaction device, the air supercharging device controller controls the air supercharging device to compress air;
the air supercharging device conveys the compressed hot air to the oxyhydrogen electrochemical reaction device so as to heat the oxyhydrogen electrochemical reaction device through the hot air;
the cold start controller determines the air compression heat generated by compressing the air and the starting heat required by cold start of the oxyhydrogen electrochemical reaction device, and judges whether the air compression heat is greater than or equal to the starting heat;
and if the heat of air compression is greater than or equal to the starting heat, the gas conveying device introduces hydrogen into the oxyhydrogen electrochemical reaction device so as to enable the oxyhydrogen electrochemical reaction device to carry out electrochemical reaction.
2. The cold start-up method of claim 1, wherein the air pressurizing device delivers the compressed hot air to the oxyhydrogen electrochemical reaction device, and comprises:
the cold start controller determines whether an air outlet temperature of the air booster device is greater than a preset temperature;
if the temperature is higher than the preset temperature, the air supercharging device conveys the compressed hot air to the oxyhydrogen electrochemical reaction device;
if the temperature is lower than the preset temperature, the air supercharging device continues to compress the air.
3. The cold start method according to claim 1, wherein before determining whether the heat of compression of air is greater than or equal to the heat of start, further comprising:
the cold start controller determines a preset maximum air temperature corresponding to the oxyhydrogen electrochemical reaction device and a first air inlet temperature, and determines whether the first air inlet temperature is greater than the preset maximum air temperature;
if the first air inlet temperature is higher than the preset maximum air temperature, the working medium circulating pump conveys the working medium to the heat dissipation device so as to enable the working medium to exchange heat with the compressed hot air and determine whether the second air inlet temperature is higher than the maximum air temperature;
and if the first air inlet temperature is less than or equal to the preset maximum air temperature, the cold start controller determines the first working medium heat generated by the working medium in the heat dissipation device.
4. The cold start method of claim 3, wherein after the cold start controller determines the heat of the first working medium generated after the working medium is subjected to the heat dissipation treatment, the method further comprises:
the working medium circulating pump respectively conveys the working medium to the air supercharging device and the air supercharging device controller for heat exchange, and determines the second working medium heat generated by the working medium in the air supercharging device and the third working medium heat generated by the air supercharging device controller;
the cold start controller determines whether the thermal cycle outlet temperature of the heat sink, the thermal cycle outlet temperature of the air booster, and the thermal cycle outlet temperature of the air booster controller are all greater than the thermal cycle outlet temperature of the oxyhydrogen electrochemical reaction device;
if so, the cold start controller transmits the working medium transmitted to the heat dissipation device and the working medium respectively transmitted to the air supercharging device and the air supercharging device controller to the oxyhydrogen electrochemical reaction device for heating treatment.
5. The cold start method according to claim 4, wherein the determining whether the heat of air compression is greater than or equal to the start heat comprises:
and the cold start controller judges whether the sum of one or more of the air compression heat, the first working medium heat, the second working medium heat and the third working medium heat is greater than the starting heat.
6. The cold start-up method of claim 1, wherein the gas delivery device further comprises, before introducing hydrogen gas into the oxyhydrogen electrochemical reaction device:
the cold start controller judges whether the oxygen concentration of the hydrogen cavity of the oxyhydrogen electrochemical reaction device is less than a preset concentration value;
and if the concentration value is less than the preset concentration value, the gas conveying device feeds hydrogen into the oxyhydrogen electrochemical reaction device.
7. The cold start-up method of claim 1, further comprising, after said subjecting said hydrogen-oxygen electrochemical reaction device to electrochemical reaction:
the cold start controller determines whether the preset cold start maximum time is longer than the sum of the current cold start heating time and the electrochemical reaction stabilization time;
if the current cold start heating time length is longer than the sum of the current cold start heating time length and the electrochemical reaction stabilization time length, the air supercharging device controller controls the air supercharging device to compress air;
if the current cold start heating time and the current electrochemical reaction stabilization time are less than or equal to the sum of the current cold start heating time and the current electrochemical reaction stabilization time, the cold start controller judges whether the electrochemical reaction stabilization time is longer than a preset time;
and if the time length is longer than the preset time length, the air supercharging device controller controls the air supercharging device to compress air.
8. A cold start system, comprising a cold start control unit, an air pressurizing device control unit, an air pressurizing unit, a hydrogen-oxygen electrochemical reaction unit, and a gas input unit, wherein:
the cold start control unit is used for receiving a cold start instruction of the oxyhydrogen electrochemical reaction device; the device is used for determining the air compression heat generated by compressing the air and the starting heat required by cold starting of the oxyhydrogen electrochemical reaction device, and judging whether the air compression heat is greater than or equal to the starting heat;
the air supercharging device control unit is used for controlling the air supercharging device to compress air;
the air pressurization unit is used for compressing air; the hot air after being compressed is conveyed to the oxyhydrogen electrochemical reaction device, so that the oxyhydrogen electrochemical reaction device is heated by the hot air;
and the gas input unit is used for introducing hydrogen into the oxyhydrogen electrochemical reaction device if the heat of air compression is greater than or equal to the starting heat so as to enable the oxyhydrogen electrochemical reaction device to carry out electrochemical reaction.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the cold start method according to any of claims 1 to 7 are implemented when the processor executes the program.
10. A non-transitory computer readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the cold boot method according to any one of claims 1 to 7.
Technical Field
The invention relates to the technical field of rail transit, in particular to a cold start method, a cold start system, electronic equipment and a storage medium.
Background
With the continuous development of rail transit technology, the number of rail transit vehicles is also increasing, and resource consumption and harmful substance emission are also greatly increased. In order to reduce energy consumption and harmful substance emission, how to realize energy conservation and emission reduction of rail transit vehicles is also important.
At the present stage, energy conservation and emission reduction of rail transit vehicles are generally realized through a hydrogen-oxygen electrochemical reaction device. Specifically, at a higher temperature, hydrogen and oxygen can be subjected to chemical reaction through the action of a catalyst to generate liquid water, electrons can be released in the chemical reaction process, and chemical energy can be converted into electric energy, so that the oxyhydrogen electrochemical reaction device can be matched with an energy storage device to serve as a power system and a power source of a rail transit vehicle. However, because the breadth of our country is large, the temperature difference of the operating environment of the rail transit train is large, and when the temperature of the operating environment is low, the oxyhydrogen electrochemical reaction device cannot be started and normally work, thereby affecting the working efficiency of the oxyhydrogen electrochemical reaction device to a certain extent. Therefore, a cold start method of a hydrogen-oxygen electrochemical reaction device is needed.
Disclosure of Invention
Because the existing methods have the above problems, embodiments of the present invention provide a cold start method, a cold start system, an electronic device, and a storage medium.
In a first aspect, an embodiment of the present invention provides a cold start method, where the method includes:
when the cold start controller receives a cold start instruction of the oxyhydrogen electrochemical reaction device, the air supercharging device controller controls the air supercharging device to compress air;
the air supercharging device conveys the compressed hot air to the oxyhydrogen electrochemical reaction device so as to heat the oxyhydrogen electrochemical reaction device through the hot air;
the cold start controller determines the air compression heat generated by compressing the air and the starting heat required by cold start of the oxyhydrogen electrochemical reaction device, and judges whether the air compression heat is greater than or equal to the starting heat;
and if the heat of air compression is greater than or equal to the starting heat, the gas conveying device introduces hydrogen into the oxyhydrogen electrochemical reaction device so as to enable the oxyhydrogen electrochemical reaction device to carry out electrochemical reaction.
Optionally, the air supercharging device delivers the compressed hot air to the hydrogen-oxygen electrochemical reaction device, and includes:
the cold start controller determines whether an air outlet temperature of the air booster device is greater than a preset temperature;
if the temperature is higher than the preset temperature, the air supercharging device conveys the compressed hot air to the oxyhydrogen electrochemical reaction device;
if the temperature is lower than the preset temperature, the air supercharging device continues to compress the air.
Optionally, before determining whether the heat of compression of the air is greater than or equal to the starting heat, the method further includes:
the cold start controller determines a preset maximum air temperature corresponding to the oxyhydrogen electrochemical reaction device and a first air inlet temperature, and determines whether the first air inlet temperature is greater than the preset maximum air temperature;
if the first air inlet temperature is higher than the preset maximum air temperature, the working medium circulating pump conveys the working medium to the heat dissipation device so as to enable the working medium to exchange heat with the compressed hot air and determine whether the second air inlet temperature is higher than the maximum air temperature;
and if the first air inlet temperature is less than or equal to the preset maximum air temperature, the cold start controller determines the first working medium heat generated by the working medium in the heat dissipation device.
Optionally, after the cold start controller determines the first working medium heat generated after the working medium is subjected to the heat dissipation treatment, the method further includes:
the working medium circulating pump respectively conveys the working medium to the air supercharging device and the air supercharging device controller for heat exchange, and determines the second working medium heat generated by the working medium in the air supercharging device and the third working medium heat generated by the air supercharging device controller;
the cold start controller determines whether the thermal cycle outlet temperature of the heat sink, the thermal cycle outlet temperature of the air booster, and the thermal cycle outlet temperature of the air booster controller are all greater than the thermal cycle outlet temperature of the oxyhydrogen electrochemical reaction device;
if so, the cold start controller transmits the working medium transmitted to the heat dissipation device and the working medium respectively transmitted to the air supercharging device and the air supercharging device controller to the oxyhydrogen electrochemical reaction device for heating treatment.
Optionally, the determining whether the heat of compression of the air is greater than or equal to the starting heat includes:
and the cold start controller judges whether the sum of one or more of the air compression heat, the first working medium heat, the second working medium heat and the third working medium heat is greater than the starting heat.
Optionally, before the gas delivery device introduces hydrogen into the oxyhydrogen electrochemical reaction device, the gas delivery device further includes:
the cold start controller judges whether the oxygen concentration of the hydrogen cavity of the oxyhydrogen electrochemical reaction device is less than a preset concentration value;
and if the concentration value is less than the preset concentration value, the gas conveying device feeds hydrogen into the oxyhydrogen electrochemical reaction device.
Optionally, after the electrochemical reaction is performed on the hydrogen-oxygen electrochemical reaction device, the method further includes:
the cold start controller determines whether the preset cold start maximum time is longer than the sum of the current cold start heating time and the electrochemical reaction stabilization time;
if the current cold start heating time length is longer than the sum of the current cold start heating time length and the electrochemical reaction stabilization time length, the air supercharging device controller controls the air supercharging device to compress air;
if the current cold start heating time and the current electrochemical reaction stabilization time are less than or equal to the sum of the current cold start heating time and the current electrochemical reaction stabilization time, the cold start controller judges whether the electrochemical reaction stabilization time is longer than a preset time;
and if the time length is longer than the preset time length, the air supercharging device controller controls the air supercharging device to compress air.
In a second aspect, an embodiment of the present invention further provides a cold start system, where the system includes a cold start control unit, an air supercharging device control unit, an air supercharging unit, a hydrogen-oxygen electrochemical reaction unit, and a gas input unit, where:
the cold start control unit is used for receiving a cold start instruction of the oxyhydrogen electrochemical reaction device; the device is used for determining the air compression heat generated by compressing the air and the starting heat required by cold starting of the oxyhydrogen electrochemical reaction device, and judging whether the air compression heat is greater than or equal to the starting heat;
the air supercharging device control unit is used for controlling the air supercharging device to compress air;
the air pressurization unit is used for compressing air; the hot air after being compressed is conveyed to the oxyhydrogen electrochemical reaction device, so that the oxyhydrogen electrochemical reaction device is heated by the hot air;
and the gas input unit is used for introducing hydrogen into the oxyhydrogen electrochemical reaction device if the heat of air compression is greater than or equal to the starting heat so as to enable the oxyhydrogen electrochemical reaction device to carry out electrochemical reaction.
In a third aspect, an embodiment of the present invention further provides an electronic device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor implements the steps of the cold boot method according to the first aspect when executing the program.
In a fourth aspect, an embodiment of the present invention also proposes a non-transitory computer-readable storage medium storing a computer program, which causes the computer to execute the steps of the cold start method according to the first aspect.
According to the technical scheme, the hot air is generated by compressing the air, the temperature of the oxyhydrogen electrochemical reaction is increased by the hot air, and when the compressed air heat generated by the air compression reaches the heat required by cold start, namely the temperature in the oxyhydrogen electrochemical reaction device reaches the temperature required by normal work of the oxyhydrogen electrochemical reaction device, hydrogen is input into the oxyhydrogen electrochemical reaction device, so that the oxyhydrogen electrochemical reaction device can normally perform electrochemical reaction. Like this, through the hot-air that obtains to the air compression treatment, heat the intensification to oxyhydrogen electrochemical reaction device, can make the temperature in the oxyhydrogen electrochemical reaction device reach the required temperature of oxyhydrogen electrochemical reaction device normal work to can realize the cold-start of oxyhydrogen electrochemical reaction device under low temperature environment, make oxyhydrogen electrochemical reaction device also can normal work under the lower circumstances of ambient temperature, and then can effectively improve oxyhydrogen electrochemical reaction device's work efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic flow chart of a cold start method according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a cold start cycle system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a cold start system according to an embodiment of the present invention;
fig. 4 is a logic block diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 shows a schematic flowchart of a cold start method provided in this embodiment, including:
s101, when the cold start controller receives a cold start instruction of the oxyhydrogen electrochemical reaction device, the air supercharging device controller controls the air supercharging device to compress air.
In implementation, when the oxyhydrogen electrochemical reaction device is in a shutdown state, that is, the output voltage is zero, and the ambient temperature is lower than the lowest temperature at which the oxyhydrogen electrochemical reaction device can normally operate, a command for performing cold start on the oxyhydrogen electrochemical reaction device, that is, a cold start command of the oxyhydrogen electrochemical reaction device, can be input to the cold start system. Then, the cold start controller can control the air supercharging device controller to be electrified, and the air supercharging device controller can control the air supercharging device (such as an electrically-driven supercharging device and an electrically-driven centrifugal supercharging device) to compress air so as to heat the air and obtain hot air after compression treatment. It can be understood that, considering that the full-load operation of the air supercharging device can affect the health condition of the air supercharging device, increase the energy consumption, and the air supercharging device can meet the cold start requirement of the oxyhydrogen electrochemical reaction device without the full-load operation generally, the air supercharging device controller can control the air supercharging device to operate according to a certain proportion of the rated rotation speed, for example, the air supercharging device can operate at 80% of the rated rotation speed.
And S102, conveying the compressed hot air to the oxyhydrogen electrochemical reaction device by the air supercharging device so as to heat the oxyhydrogen electrochemical reaction device by the hot air.
In practice, after obtaining the compressed hot air, the air supercharging device may deliver the compressed hot air to the hydrogen-oxygen electrochemical reaction device. The compressed hot air can then purge the air chamber and the hydrogen chamber in the oxyhydrogen electrochemical reaction device, so that the temperature of the oxyhydrogen electrochemical reaction device can be increased, i.e. the temperature of the oxyhydrogen electrochemical reaction device can be raised by the compressed hot air.
S103, the cold start controller determines the air compression heat generated by compressing the air and the starting heat required by cold start of the oxyhydrogen electrochemical reaction device, and judges whether the air compression heat is larger than or equal to the starting heat.
Wherein, the air compression heat refers to the heat generated by compressing the air.
The starting heat refers to the heat required by the hydrogen-oxygen electrochemical reaction device for starting.
In implementation, after the temperature rise treatment is performed on the oxyhydrogen electrochemical reaction device, the cold start controller may determine the air compression heat generated by the air compression treatment, and may determine the start heat required for starting the oxyhydrogen electrochemical reaction device. Then, the cold start controller may determine whether the aforementioned air compression heat amount is greater than or equal to the aforementioned start heat amount to perform different processes according to the determination result. Specifically, the cold start controller can determine the air compression heat according to the air compression temperature rise, the air specific heat capacity and the air quality generated by the air compression treatment of the air supercharging device. Taking the air inlet temperature of the air supercharging device as T0 and the air outlet temperature of the air supercharging device as T0 ', for example, the cold start controller may determine that the air compression temperature σ T0 generated by the air supercharging device compressing the air should be equal to the difference between T0 ' and T0, i.e., σ T0 ═ T0 ' -T0, and then the cold start controller may calculate the air compression heat Q0, and Q0 ═ c × m × σ T0, where c is the air specific heat capacity and m is the air mass. The cold start controller can also determine the starting heat quantity required by the cold start of the oxyhydrogen electrochemical reaction device according to the preset lowest temperature at which the oxyhydrogen electrochemical reaction device can be normally started and the air inlet temperature of the air supercharging device. Taking the minimum temperature at which the oxyhydrogen electrochemical reaction device can be normally started as Tlim and the air inlet temperature of the air pressurization device as T0 as an example, the cold start controller may determine the temperature difference σ TL between the air inlet temperature of the air pressurization device and the minimum temperature at which the oxyhydrogen electrochemical reaction device can be normally started, that is, σ TL is Tlim-T0, and then the cold start controller may calculate the air compression heat Q st, and Q st is cxmx σ TL, where c is the specific heat capacity of air and m is the air quality.
And S104, if the heat of air compression is larger than or equal to the starting heat, the gas conveying device introduces hydrogen into the oxyhydrogen electrochemical reaction device so as to enable the oxyhydrogen electrochemical reaction device to carry out electrochemical reaction.
In practice, the cold start controller may consider the cold start to be successful if the heat of compression of the air is greater than or equal to the start heat. Then, the cold start controller can control the hot air to be input into the air cavity of the oxyhydrogen electrochemical reaction device and can control the gas conveying device to introduce hydrogen into the oxyhydrogen electrochemical reaction device through the gas conveying device so as to enable the oxyhydrogen electrochemical reaction device to carry out electrochemical reaction. It is understood that if the amount of heat of air compression is less than the amount of heat of start, the cold start controller may control the air charging device to continue compressing the air, i.e., repeat the above processes of steps S101-S104.
According to the technical scheme, the hot air is generated by compressing the air, the temperature of the oxyhydrogen electrochemical reaction is increased by the hot air, and when the compressed air heat generated by the air compression reaches the heat required by cold start, namely the temperature in the oxyhydrogen electrochemical reaction device reaches the temperature required by normal work of the oxyhydrogen electrochemical reaction device, hydrogen is input into the oxyhydrogen electrochemical reaction device, so that the oxyhydrogen electrochemical reaction device can normally perform electrochemical reaction. Like this, through the hot-air that obtains to the air compression treatment, heat the intensification to oxyhydrogen electrochemical reaction device, can make the temperature in the oxyhydrogen electrochemical reaction device reach the required temperature of oxyhydrogen electrochemical reaction device normal work to can realize the cold-start of oxyhydrogen electrochemical reaction device under low temperature environment, make oxyhydrogen electrochemical reaction device also can normal work under the lower circumstances of ambient temperature, and then can effectively improve oxyhydrogen electrochemical reaction device's work efficiency.
Further, on the basis of the above embodiment of the method, when the temperature of the hot air is greater than the preset temperature, the hot air may be delivered to the oxyhydrogen electrochemical reaction device, and the corresponding part of the above processing of step S102 may be as follows: the cold start controller determines whether the air outlet temperature of the air supercharging device is greater than a preset temperature; if the temperature is higher than the preset temperature, the air supercharging device conveys the compressed hot air to the oxyhydrogen electrochemical reaction device; if the temperature is lower than the preset temperature, the air supercharging device continues to compress the air.
Wherein the preset temperature refers to the minimum value of the air inlet temperature of the oxyhydrogen electrochemical reaction device when the oxyhydrogen electrochemical reaction device can be started.
In an implementation, before the air supercharging device delivers the compressed hot air to the oxyhydrogen electrochemical reaction, the cold start controller may determine whether the air outlet temperature of the air supercharging device is greater than or equal to a preset temperature of the oxyhydrogen electrochemical reaction device. If the temperature of the air outlet of the air supercharging device is greater than or equal to the preset temperature, the air supercharging device can deliver the compressed hot air to the oxyhydrogen electrochemical reaction device so as to heat the oxyhydrogen electrochemical reaction device through the hot air. And if the temperature of the air outlet of the air supercharging device is lower than the preset temperature, the air supercharging device is required to continue to compress the air. Like this, when air supercharging device's air outlet temperature is greater than or equal to oxyhydrogen electrochemical reaction device's preset temperature, carry the hot-air after the compression treatment to oxyhydrogen electrochemical reaction device and carry out the intensification processing, can further accelerate oxyhydrogen electrochemical reaction device's programming rate to can further reduce cold start consuming time, and then further improve oxyhydrogen electrochemical reaction device's operating efficiency.
Further, on the basis of the above embodiment of the method, when the air inlet temperature of the oxyhydrogen electrochemical reaction device is higher than the preset maximum air temperature of the oxyhydrogen electrochemical reaction device, the hot air can be subjected to heat dissipation treatment, and the corresponding treatment can be as follows: the cold start controller determines a preset maximum air temperature corresponding to the oxyhydrogen electrochemical reaction device and a first air inlet temperature, and determines whether the first air inlet temperature is greater than the preset maximum air temperature; if the first air inlet temperature is higher than the preset maximum air temperature, the working medium circulating pump conveys the working medium to the heat dissipation device so as to enable the working medium to exchange heat with the compressed hot air and determine whether the second air inlet temperature is higher than the maximum air temperature; and if the temperature of the first air inlet is less than or equal to the preset maximum air temperature, the cold start controller determines the heat of the first working medium generated by the working medium in the heat dissipation device.
The preset maximum air temperature refers to the maximum temperature at which the oxyhydrogen electrochemical reaction device can normally work, namely, when the temperature of the oxyhydrogen electrochemical reaction device exceeds the temperature, the oxyhydrogen electrochemical reaction device cannot normally work.
The first air inlet temperature refers to the air inlet temperature of the oxyhydrogen electrochemical reaction device after the oxyhydrogen electrochemical reaction device is subjected to temperature rise treatment.
And the second air inlet temperature refers to the air inlet temperature of the oxyhydrogen electrochemical reaction device after heat exchange is carried out between the working medium and the compressed hot air.
The first working medium heat refers to heat generated by heat exchange between the working medium and the compressed hot air.
In practice, considering the temperature raising process of the oxyhydrogen electrochemical reaction device by the compressed hot air, the temperature of the oxyhydrogen electrochemical reaction device may be higher than the preset maximum air temperature, which may affect the working quality of the oxyhydrogen electrochemical reaction device. Therefore, before judging whether the heat of air compression is greater than or equal to the starting heat, the cold start controller can also determine the preset maximum air temperature of the oxyhydrogen electrochemical reaction device and the first air inlet temperature of the oxyhydrogen electrochemical reaction device. The cold start controller may then determine whether the first air inlet temperature is the predetermined maximum air temperature. If the temperature of the first air inlet is higher than the preset maximum air temperature, the temperature of the oxyhydrogen electrochemical reaction device is considered to be possibly too high at the moment, the cold start controller can control the work of the wage circulating pump, and a working medium (such as deionized water or ethylene glycol aqueous solution) is conveyed to the heat dissipation device by the working medium circulating pump so that the working medium can exchange heat with the compressed hot air to reduce the temperature of the compressed hot air, namely, the compressed hot air is cooled so that the temperature of the air inlet of the oxyhydrogen electrochemical reaction device is reduced and kept within the preset maximum air temperature. If the temperature of the first air inlet is less than or equal to the preset maximum air temperature, the temperature of the oxyhydrogen electrochemical reaction device is considered to be in the normal working range at the moment, and the cold start controller can calculate the heat of the first working medium generated by heat exchange between the working medium in the heat dissipation device and the compressed hot air. Taking the temperature at the hot cycle inlet of the heat dissipation device as Tw2 and the temperature at the hot cycle outlet of the heat dissipation device as Tw3 as examples, the cold start controller can calculate the temperature difference σ Tw23 between the hot cycle inlet and the hot cycle outlet of the heat dissipation device as Tw3-Tw2, and then the cold start controller can calculate the first working medium heat QIC generated when the working medium performs heat exchange in the heat dissipation device as cw × mw × σ Tw23, where cw is the specific heat capacity of the working medium and mw is the mass of the working medium. Therefore, when the temperature of the air inlet of the oxyhydrogen electrochemical reaction device is too high, the compressed hot air can be cooled through the working medium, so that the temperature of the air inlet of the oxyhydrogen electrochemical reaction device is kept within the preset maximum air temperature. Therefore, the temperature of the oxyhydrogen electrochemical reaction device can be further kept within the normal working temperature range, and the working efficiency of the oxyhydrogen electrochemical reaction device can be further improved.
Further, on the basis of the above method embodiment, the working medium may be used to exchange heat with the air supercharging device and the air supercharging device controller, and the working medium after heat exchange is used to perform temperature raising processing on the oxyhydrogen electrochemical reaction device, and the corresponding processing may be as follows: the working medium circulating pump respectively conveys working media to the air supercharging device and the air supercharging device controller for heat exchange, and determines the second working medium heat generated by the working media in the air supercharging device and the third working medium heat generated by the air supercharging device controller; the cold start controller determines whether the temperature of the heat circulation outlet of the heat dissipation device, the temperature of the heat circulation outlet of the air supercharging device and the temperature of the heat circulation outlet of the air supercharging device controller are all greater than the temperature of the heat circulation outlet of the oxyhydrogen electrochemical reaction device; if so, the cold start controller transmits the working medium transmitted to the heat dissipation device and the working medium respectively transmitted to the air supercharging device and the air supercharging device controller to the oxyhydrogen electrochemical reaction device for heating treatment.
The second working medium heat refers to heat generated by heat exchange of the working medium in the air booster device.
The third working medium heat refers to the heat generated by the working medium exchanging heat in the air supercharging device controller.
In the implementation, considering that the air supercharging device controller and the air supercharging device can generate heat during working and possibly affect the working efficiency of the air supercharging device controller and the air supercharging device, the cold start controller can also control the working medium circulating pump to respectively convey the working medium into the air supercharging device controller and the air supercharging device for heat exchange. Then, the cold start controller can also calculate the heat of a second working medium generated by the working medium in the air supercharging device and the heat of a third working medium generated by the working medium in the air supercharging device controller. Taking the hot-cycle inlet temperature of the air supercharging device as TW0 and the hot-cycle outlet temperature of the air supercharging device as TW1 as an example, the cold start controller may calculate the temperature difference value σ TW01 between the hot-cycle inlet and outlet of the air supercharging device as TW1-TW0, and calculate the second working medium heat quantity QT generated by the working medium in the air supercharging device as cw × mw × σ TW 01. Taking the hot-cycle inlet temperature of the air supercharging device controller as TW4 and the hot-cycle outlet temperature of the air supercharging device controller as TW5 as examples, the cold start controller may calculate the temperature difference σ TW45 between the hot-cycle inlet and the outlet of the air supercharging device controller as TW5-TW4, and calculate the third working medium heat QTc generated by the working medium in the air supercharging device controller as cw × mw × TW45, where cw is the working medium specific heat capacity and mw is the working medium mass.
The cold start controller may then determine a thermal cycle outlet temperature of the heat sink, a thermal cycle outlet temperature of the air booster, and a thermal cycle outlet temperature of the air booster controller. And determining whether the outlet temperature of each thermal cycle is greater than the outlet temperature of the thermal cycle of the hydrogen-oxygen electrochemical reaction device. If so, the cold start controller can convey the working medium conveyed to the heat dissipation device (namely the working medium conveyed to the heat dissipation device for heat exchange), the working medium conveyed to the air supercharging device and the air supercharging device controller (namely the working medium respectively conveyed to the air supercharging device and the air supercharging device controller for heat exchange), and the working medium conveyed to the oxyhydrogen electrochemical reaction device for heating the oxyhydrogen electrochemical reaction device. Like this, can realize the cyclic utilization of working medium, and can realize heat abstractor, air supercharging device, the reuse of the heat that the air supercharging device controller produced, can be when carrying out the air heating to oxyhydrogen electrochemical reaction device, can also carry out working medium heating (be the water route heating) to oxyhydrogen electrochemical reaction device, thereby can further reduce energy consumption, and can reduce oxyhydrogen electrochemical reaction device's intensification process time, thereby can further reduce cold start-up time, and then can further improve oxyhydrogen electrochemical reaction device's work efficiency.
Further, on the basis of the above embodiment of the method, it may be determined whether the hydrogen-oxygen electrochemical reaction device can be successfully cold started according to the heat of air compression, the heat of the first working medium, the heat of the second working medium, the heat of the third working medium, and the start heat, and accordingly, the partial processing of step S103 may be as follows: the cold start controller judges whether the sum of one or more of the air compression heat, the first working medium heat, the second working medium heat and the third working medium heat is larger than the starting heat.
Under the condition that the heat quantity of the first working medium, the heat quantity of the second working medium and the heat quantity of the third working medium are calculated, the cold start controller can judge whether the sum of one or more of the compressed air heat quantity, the heat quantity of the first working medium, the heat quantity of the second working medium and the heat quantity of the third working medium is larger than the starting heat quantity before controlling the gas conveying device to convey hydrogen into the oxyhydrogen electrochemical reaction device. Specifically, the cold start controller may first determine whether the start heat is greater than the air compression heat. If the heat quantity of the first working medium is larger than the heat quantity of the second working medium, the cold start controller can judge whether the starting heat quantity is larger than the sum of the heat quantity of the first working medium, the heat quantity of the second working medium and the heat quantity of the third working medium. If the heat quantity is still larger than the cold starting controller, whether the starting heat quantity is larger than the sum of the air compression heat quantity, the first working medium heat quantity, the second working medium heat quantity and the third working medium heat quantity can be judged. It can be understood that, in the foregoing judgment process, if the starting heat is smaller than the air compression heat, or smaller than the sum of the first working medium heat, the second working medium heat and the third working medium heat, or smaller than the sum of the air compression heat, the first working medium heat, the second working medium heat and the third working medium heat, the cold start controller may all consider that the hydrogen-oxygen electrochemical reaction device can be successfully cold started, and may control the gas conveying device to input hydrogen into the hydrogen-oxygen electrochemical reaction device. Therefore, the first working medium heat, the second working medium heat and the third working medium heat can be utilized, namely, the heat generated by each device is utilized to heat up the oxyhydrogen electrochemical reaction device, so that the energy consumption can be further reduced, the cold start time is shortened, and the working efficiency of the oxyhydrogen electrochemical reaction device can be further improved.
Further, on the basis of the above embodiment of the method, whether to introduce hydrogen into the hydrogen-oxygen electrochemical reaction device can be determined according to the oxygen concentration of the hydrogen chamber, and the corresponding treatment can be as follows: the cold start controller judges whether the oxygen concentration of the hydrogen cavity of the oxyhydrogen electrochemical reaction device is less than a preset concentration value; if the concentration value is less than the preset concentration value, the gas conveying device feeds hydrogen into the oxyhydrogen electrochemical reaction device.
Wherein the preset concentration value refers to the maximum value of the oxygen concentration allowed to appear in the hydrogen cavity of the hydrogen-oxygen electrochemical reaction device.
In practice, it is considered that after the hot air purges the air chamber and the oxygen chamber of the oxyhydrogen electrochemical reaction device to heat the oxyhydrogen electrochemical reaction device, the oxygen concentration of the hydrogen chamber of the oxyhydrogen electrochemical reaction device may be high, which may affect the normal operation of the oxyhydrogen electrochemical reaction device. Therefore, before the hydrogen is introduced into the oxyhydrogen electrochemical reaction device, the cold start controller can monitor the oxygen concentration of the hydrogen cavity of the oxyhydrogen electrochemical reaction device and can judge whether the oxygen concentration of the hydrogen cavity is less than a preset concentration value. If the oxygen concentration of the hydrogen gas cavity is less than the preset concentration value, the cold start controller can control the gas conveying device to convey hydrogen to the oxyhydrogen electrochemical reaction device, and simultaneously hot air enters the air cavity of the oxyhydrogen electrochemical reaction device, so that the oxyhydrogen electrochemical reaction device can carry out electrochemical reaction. If the oxygen concentration of the hydrogen gas cavity is greater than the preset concentration value, the cold start controller can control the gas conveying device to blow a small amount of nitrogen into the hydrogen gas cavity of the hydrogen-oxygen electrochemical reaction device to blow the hydrogen gas cavity, so that the oxygen concentration of the hydrogen gas cavity is less than the preset concentration value, and the normal and safe operation of the hydrogen-oxygen electrochemical reaction device is ensured. Therefore, the hydrogen cavity oxygen concentration of the oxyhydrogen electrochemical reaction device can be ensured to be less than a preset concentration value, so that the oxyhydrogen electrochemical reaction device can be ensured to be operated safely while the normal starting and normal working of the oxyhydrogen electrochemical reaction device are ensured, and the working efficiency of the oxyhydrogen electrochemical reaction device can be further improved.
Further, on the basis of the above embodiment of the method, after the hydrogen-oxygen electrochemical reaction device starts to operate, the operation condition of the hydrogen-oxygen electrochemical reaction device can be monitored, and the corresponding processes can be as follows: the cold start controller determines whether the preset cold start maximum time is longer than the sum of the current cold start heating time and the electrochemical reaction stabilization time; if the current cold start heating time length is longer than the sum of the current cold start heating time length and the current electrochemical reaction stabilization time length, the air supercharging device controller controls the air supercharging device to compress the air; if the current cold start heating time and the current electrochemical reaction stabilization time are less than or equal to the sum of the current cold start heating time and the electrochemical reaction stabilization time, the cold start controller judges whether the electrochemical reaction stabilization time is less than the actual time consumption of a preset amplitude value and is greater than the preset time; if the time length is longer than the preset time length, the air supercharging device is controlled by the air supercharging device controller to compress the air.
Wherein the preset maximum cold start time length is the preset maximum value of the interval time length from the cold start control receiving of the cold start instruction to the stable operation of the oxyhydrogen electrochemical reaction device, wherein the stable operation of the oxyhydrogen electrochemical reaction device means that the voltage variation amplitude of the output voltage of the oxyhydrogen electrochemical reaction device is within the preset amplitude, and if the preset amplitude can be set to 0.05V, namely when the voltage variation amplitude of the output voltage of the oxyhydrogen electrochemical reaction device is within 0.05V, the oxyhydrogen electrochemical reaction device is considered to be stably operated.
The cold start heating time length refers to the time interval from the cold start controller receiving the cold start instruction to the hydrogen-oxygen electrochemical reaction device introducing hydrogen when cold start is carried out.
The electrochemical reaction stabilization duration points to the interval duration from the introduction of hydrogen into the oxyhydrogen electrochemical reaction device to the stable operation of the oxyhydrogen electrochemical reaction device.
The preset time length refers to the preset allowable hydrogen gas introduced into the oxyhydrogen electrochemical reaction device until the maximum value of the interval time length of stable operation of the oxyhydrogen electrochemical reaction device, namely, when the actual time length exceeds the preset time length, the cold start is considered to fail.
In practice, after the oxyhydrogen electrochemical reaction device performs the electrochemical reaction, the cold start controller may further monitor whether the oxyhydrogen electrochemical reaction device reaches a stable operating state within a preset cold start maximum time period to determine whether the oxyhydrogen electrochemical reaction device is successfully cold started. Specifically, the cold start controller may determine a preset cold start maximum time, a current cold start heating time, and an electrochemical reaction stabilization time. Then, the cold start controller can calculate the sum of the current cold start heating time and the electrochemical reaction stabilization time, and judge whether the preset cold start maximum time is greater than the sum of the time. If the preset maximum cold start duration is longer than the sum of the preset maximum cold start durations, the cold start is considered to be failed, and the air supercharging device controller can control the air supercharging device to compress the air, namely, the steps S101-S104 are executed again, and the cold start process is executed again. If the preset maximum cold start time is less than or equal to the sum of the preset maximum cold start time, the cold start controller can determine whether the change amplitude of the output voltage of the oxyhydrogen electrochemical reaction device is within a preset amplitude, if so, determine whether the electrochemical reaction stabilization time is greater than the preset time, if so, the cold start is considered to be failed, the air pressurization device controller can control the air pressurization device to compress the air, namely, the steps S101-S104 are re-executed, otherwise, the cold start controller is considered to be successful, the cold start controller hands over the control authority, and the execution of the cold start program is finished. Therefore, the cold start heating time and the electrochemical reaction stabilization time of the oxyhydrogen electrochemical reaction device are monitored, and when the sum of the cold start heating time and the electrochemical reaction stabilization time is greater than the preset maximum starting time or the electrochemical reaction stabilization time is greater than the preset time, the cold start program is executed again, so that the cold start success rate can be further improved, and the working efficiency of the oxyhydrogen electrochemical reaction device is further improved.
According to the technical scheme, the hot air is generated by compressing the air, the temperature of the oxyhydrogen electrochemical reaction is increased by the hot air, and when the compressed air heat generated by the air compression reaches the heat required by cold start, namely the temperature in the oxyhydrogen electrochemical reaction device reaches the temperature required by normal work of the oxyhydrogen electrochemical reaction device, hydrogen is input into the oxyhydrogen electrochemical reaction device, so that the oxyhydrogen electrochemical reaction device can normally perform electrochemical reaction. Like this, through the hot-air that obtains to the air compression treatment, heat the intensification to oxyhydrogen electrochemical reaction device, can make the temperature in the oxyhydrogen electrochemical reaction device reach the required temperature of oxyhydrogen electrochemical reaction device normal work to can realize the cold-start of oxyhydrogen electrochemical reaction device under low temperature environment, make oxyhydrogen electrochemical reaction device also can normal work under the lower circumstances of ambient temperature, and then can effectively improve oxyhydrogen electrochemical reaction device's work efficiency.
It can be understood that the cold start method provided by the embodiment of the present invention can be performed by a cold start cycle system, referring to fig. 2, the cold start cycle system can include the oxyhydrogen electrochemical reaction device FCs, the air pressure charging device ACm for providing oxygen to the oxyhydrogen electrochemical reaction device, the air pressure charging device controller ACc, the heat sink ICe for cooling the compressed hot air, the cold start controller LSc of the oxyhydrogen electrochemical reaction device, the air pipeline and the hot cycle pipeline, the working medium circulation pump EXp, and the working medium supplement tank EXb, and the air pipeline and the hot cycle pipeline are equipped with temperature and pressure sensors and related valve bodies.
Wherein, FCs can be formed by stacking a plurality of single-layer reaction devices; ACm can be electrically driven centrifugal supercharging device, which has the characteristics of high pressure ratio and large flow, and can compress air to heat air to obtain hot air; the ACC can adjust the rotating speed of the air supercharging device, so that the air flow of ACm is controlled, and meanwhile, the voltage stabilizing effect can be achieved; ICe is installed behind ACm, the air inlet of Ice is connected with the air outlet of ACm through an air line, the air outlet of Ice is connected with the air inlet of FCs, the hydrogen side of the air inlet of FCs is installed with a solenoid valve ICov2, the ICov2 is used for controlling the hot air inlet in cold start, the air outlet of Ice is installed with a three-way valve ICov1, and the outlet end of the valve body of ICov1 is communicated with the atmosphere and used for controlling the air outlet. The thermal cycle working medium is in ICe, and exchanges heat with the air pipeline under the action of extended flow and fins; an air line (i.e., a line without a fill in FIG. 2) that can take air from the atmosphere and deliver it to the air inlet of ACm; after passing through EXp and EXb, a thermal circulation pipeline (namely a pipeline filled in fig. 2) is respectively connected with ACm, ICe and ACc to form three parallel thermal circulation working medium branches ACmp, ICep and ACcp, after outlets of the thermal circulation working medium branches are converged, the thermal circulation pipeline FCsip is connected to an inlet of the thermal circulation pipeline of the FCs, and meanwhile, a thermal circulation pipeline FCsop is also installed at the outlet of the thermal circulation pipeline of the FCs and is connected to EXp, so that a thermal circulation pipeline loop is closed.
An electric control three-way electromagnetic valve FCsbv and a bypass pipeline FCsbp are arranged at the inlet of the thermal circulation pipeline of the FCs and used for controlling the FCs to work independently in the thermal circulation. Electromagnetic valves ACmv, ICev and ACcv are respectively installed at the inlets of the parallel thermal cycle working medium branches, so that the independent control of the three thermal cycle branches can be realized. EXp is an electrically driven liquid pump, and the flow rate is accurate and adjustable. EXb can supply the required working medium of each branch road, play the effect of external pressure in the balanced heat circulation pipeline simultaneously, prevent to produce the air lock in the pipeline. A temperature and pressure integrated sensor TPs1 is arranged at an air inlet of ACm on the air pipeline and a heat circulation pipeline respectively, and a temperature and pressure integrated sensor TPs2 is arranged at an air outlet of ACm on the air pipeline and the heat circulation pipeline respectively; temperature and pressure integrated sensors TPs3 at the gas inlet of the oxyhydrogen electrochemical reaction device; a temperature and pressure integrated sensor TPs4 is arranged at a gas outlet of the FCs; installing an oxygen concentration sensor Os1 at the gas outlet of FCs; ICe the inlet of the thermal circulation branch is provided with a temperature sensor Ts 1; ICe the outlet of the thermal circulation branch is provided with a temperature sensor Ts 2; ACm the inlet of the thermal circulation branch is provided with a temperature sensor Ts 3; ACm the outlet of the thermal circulation branch is provided with a temperature sensor Ts 4; the inlet of the ACc thermal circulation branch is provided with a temperature sensor Ts 5; the outlet of the ACc thermal circulation branch is provided with a temperature sensor Ts 6; the inlet of the FCs thermal circulation pipeline is provided with a temperature sensor Ts 7; the outlet of the FCs thermal circulation pipeline is provided with a temperature sensor Ts 8; EXp the inlet of the thermal cycle is provided with a pressure sensor Ps 1; EXp the outlet of the thermal cycle is provided with a pressure sensor Ps 2; EXb, a liquid level sensor Bs1 is installed. The working medium can be deionized water or glycol aqueous solution. The aforementioned ACm, ACc, EXp and LSc are all supplied from an external power source.
The method provided by the embodiment of the present invention will be fully described by taking the lowest temperature at which the hydrogen-oxygen electrochemical reaction device can normally operate (i.e., the temperature at which the cold start process is triggered) as 0 °. First, the temperature corresponding to the outlet/inlet of each device can be defined as follows: ACm air inlet temperature T0; ACm air outlet temperature T0'; FCs air inlet temperature T1; ICe air outlet temperature T1'; FCs preset the maximum air temperature as T1 max; ACm Heat cycle line inlet temperature Tw 0; ACm thermocycling line outlet temperature Tw 1; ICe Heat cycle line inlet temperature Tw 2; ICe thermocycling line outlet temperature Tw 3; the ac thermal cycle line inlet temperature Tw 4; the ACc heat cycle line outlet temperature Tw 5; inlet temperature Tin of FCs thermal cycle piping; FCs thermal cycle line outlet temperature Tout. The specific implementation process may be as follows:
step (1), when T0 is less than or equal to 0 ℃ and FCs are in a shutdown state, LSc is activated, a low-temperature cold start program is started to be executed, and at the moment, LSc controls the opening of a three-way valve ICov1 to be 100% and is in a state of being communicated with the atmosphere. Then, the ACc was energized so that it could be controlled ACm to start operating at 80% of its rated speed, and after T0' rose above 0 ℃, LSc adjusted the ICov1 opening to 0 to deliver compressed warmed hot air into the FCs. Thereafter, LSc adjusts the opening of ICov2 from 0 to 100% so that the hot air entering the FCs can purge both the air cavity and the hydrogen cavity.
Step (2), LSc may calculate ACm air inlet and air outlet temperature difference: the σ T0 is T0' -T0, the air compression temperature rise of ACm is obtained, and the corresponding air compression heat Q0 is calculated as c × m × σ T0 (where c is the air specific heat capacity and m is the air mass). LSc comparing T1 with T1max, when T1> T1max, LSc can control EXp to electrify and ICev open to 100%, making ICe thermal circulation loop connect, working medium can exchange heat with compressed hot air in ICe to keep T1 ≦ T1max, thus protecting performance and structure of related parts in FCs from being damaged by high temperature hot air. Meanwhile, LSc can calculate a temperature difference σ Tw23 between an outlet and an inlet of the ICe thermal cycle pipeline, which is Tw3-Tw2, and calculate a corresponding first working medium heat quantity QIC, which is cw × mw × σ Tw23 (where cw is the working medium specific heat capacity, and mw is the working medium mass), to obtain a heat quantity generated by the working medium after passing through the ICe thermal cycle loop.
In step (3), ACm and the ACc generate heat after working for a period of time, at this time, LSc can control ACmv and ACcv to be opened respectively, so that the thermal circulation loops of ACm and ACc are communicated respectively, so that the working medium can enter ACm to exchange heat with the ACc, at this time, the temperature difference σ Tw 01-Tw 1-Tw0 between the outlet and the inlet of the ACm thermal circulation pipeline and the temperature difference σ Tw 45-Tw 5-Tw4 between the outlet and the inlet of the ACc thermal circulation pipeline can be calculated respectively, and the corresponding heat QT of the second working medium, which is × mw × σ Tw01, and the heat QTc of the third working medium, which is × mw × σ Tw45, can be calculated respectively, so as to obtain the heat generated by the working medium after passing through the thermal circulation loop of ACm and the heat generated by the working medium after passing through the thermal circulation loop of the ACc.
And (4) when the data of the Ts2, Ts4 and Ts6 sensors are all larger than the data of Ts8, LSc can control the opening degree of the FCsbv from 0 to 100%, so that the working medium after heat exchange can enter FCs to assist the FCs in heating, the heating speed of the FCs is increased, the working medium after heat circulation can return to EXp after passing through the FCs, and the heat exchange process with ACm, ACC and ICe is continuously repeated. It will be appreciated that after the working fluid enters the FCs, there is a certain increase in the flow of working fluid in the thermal cycle line, which can be supplemented by EXb.
In step (5), LSc, the heat quantity Qst required for cold start may be obtained by calculating the temperature difference σ TL between Tlim and T0 as Tlim-T0 according to the preset lower limit value Tlim of the start environment temperature of the FCs. And when Q0 is more than or equal to Qst, or QIC + QT + QTc is more than or equal to Qst, or Q0+ QIC + QT + QTc is more than or equal to Qst, and Tout is greater than Tlim, and the temperature value of TPs4 is greater than Tlim, LSc can judge that FCs can be successfully cold-started.
In step (6), LSc may control the opening of ICov2 to be first adjusted from 100% to 0, and stop hot air from entering the FCs hydrogen chambers. And ICov1 can be controlled from 0 to 100%, the data of Os1 are detected, when the oxygen concentration of the FCs hydrogen cavity is reduced to be less than 0.01%, LSc can control ICov1 to be changed from 100% to 0 again, so that hot air can enter the FCs air cavity again, and H2 can be introduced into the FCs hydrogen cavity to enable the FCs to establish electrochemical reaction conditions so as to carry out electrochemical reaction.
In step (7), LSc may determine a preset cold start maximum time tlim, a current cold start heating time tH and an electrochemical reaction stabilization time tL, and when tlim > tH + tL, LSc determines that the system cold start time is too long, and in order to protect the performance of FCs, the cold start program needs to be executed again, and the system state returns to step (1). In addition to the time limit, LSc can also detect the voltage change condition in the FCs at the same time, within the preset time, the voltage change amplitude should be within ± 0.05V, then the FCs work stably, otherwise, LSc judges that the system cold start fails, the cold start program needs to be executed again, and the system state returns to step (1).
And (8) after the steps (1) to (7) are finished, considering that the cold start is successful, wherein LSc can control the FCsbv opening to be gradually reduced from 100% to 0 and transfer the control authority, and the cold start program is finished.
Fig. 3 shows a cold start system provided by the present embodiment, which includes a cold
the cold
the air supercharging
the
the
The cold start system described in this embodiment may be used to implement the above method embodiments, and the principle and technical effect are similar, which are not described herein again.
As shown in fig. 4, an embodiment of the present invention further provides an electronic device, where the electronic device may include: a processor (processor)401, a memory (memory)402, and a
wherein the content of the first and second substances,
the
the
Furthermore, the logic instructions in the
In another aspect, an embodiment of the present invention further provides a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program is implemented to perform the method provided by the foregoing method embodiment when executed by a processor.
The above-described system embodiments are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the 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 can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
It should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
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