Fuel cell power generation system low-temperature starting method and device and storage medium

Abstract

The embodiment of the invention provides a fuel cell power generation system low-temperature starting method and device and a storage medium. The method comprises the steps of determining a current operation mode of the fuel cell power generation system; under the condition that the current operation mode is a low-temperature starting mode, starting a heating module, and heating any electric pile through the heating module so as to start any electric pile to operate; for any one unstarted electric pile in the plurality of electric piles and any one unheated power battery in the plurality of power batteries, heating any one unstarted electric pile and any one unheated power battery through heat energy generated by the started electric pile; and the fuel cell power generation system can be quickly started with low energy consumption in a low-temperature starting mode.

Description

Technical Field

[0001] The present application relates to the field of fuel cell technology, and in particular to a low-temperature start-up method, device, storage medium and fuel cell power generation system for a fuel cell power generation system. Background Art

[0002] A fuel cell is a device that converts chemical energy into electrical energy. Fuel cell power generation systems are currently widely used in industrial and civilian fields. At present, when starting a fuel cell power generation system in a low-temperature environment, the heat generated by the gas generated by the operation of the air compressor is mainly used to heat the coolant of the fuel cell. However, when using this method for low-temperature starting, the heat generated by the air compressor is small and it is difficult to support the heat required for the low-temperature starting of the fuel cell, which can easily lead to low-temperature starting failures. The power supply capacity of the power battery is not taken into account. The startup time of the fuel cell power generation system in a low-temperature environment is long and the required energy consumption is high. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a low-temperature start-up method, device, storage medium and fuel cell power generation system for a fuel cell power generation system, so as to solve the problems of long time and high energy consumption required for low-temperature start-up of fuel cells in the prior art.

[0004] In order to achieve the above-mentioned object, the first aspect of the present application provides a low-temperature start-up method for a fuel cell power generation system, wherein the fuel cell power generation system comprises a heating module, a plurality of power batteries and a plurality of battery stacks, wherein the heating module is respectively connected to the plurality of power batteries and the plurality of battery stacks, and comprises:

[0005] determining a current operating mode of the fuel cell power generation system;

[0006] When the current operation mode is the low-temperature start mode, the heating module is started, and any battery stack is heated by the heating module to start the operation of any battery stack;

[0007] For any unstarted battery stack among the multiple battery stacks and any unheated power battery among the multiple power batteries, the heat energy generated by all the started battery stacks is used to heat any unstarted battery stack and any unheated power battery.

[0008] In an embodiment of the present application, the number of started battery stacks is one, and heating any unheated power battery and any unstarted battery stack by using the heat energy generated by the operation of all the started battery stacks includes: when the number of started battery stacks is one, heating any unheated power battery and any unstarted battery stack at the same time by using the heat energy generated by the operation of all the started battery stacks.

[0009] In an embodiment of the present application, the number of started battery stacks is at least two, and heating any unheated power battery and any unstarted battery stack by the heat energy generated by the operation of all the started battery stacks includes: when the number of started battery stacks is at least two, real-time monitoring of the outlet temperatures of all the started battery stacks, and heating any unheated power battery by the heat energy generated by the operation of all the started battery stacks; when all the started battery stacks are set to a thermal equilibrium state according to the outlet temperatures of all the started battery stacks, judging whether the operating power of the latest started battery stack is greater than or equal to a first preset power; when the operating power of the latest started battery stack is greater than or equal to the first preset power, heating any unstarted battery stack by the heat energy generated by the operation of all the started battery stacks.

[0010] In an embodiment of the present application, each power battery is respectively connected to a switch valve, and the fuel cell power generation system also includes a heat exchange water pump and a heat exchange stop valve, the heat exchange water pump is connected to multiple power batteries, and the heat exchange stop valve is connected to each switch valve, and the method also includes: when heating any unheated power battery, controlling the switch valve, heat exchange stop valve and heat exchange water pump connected to any unheated power battery to be opened; when the operating temperature of any unheated power battery reaches a preset operating temperature, controlling the switch valve connected to any unheated power battery to be closed.

[0011] In an embodiment of the present application, each battery stack is connected to an electronically controlled regulating valve, and each electronically controlled regulating valve connected to the battery stack is connected to the heating module. The method also includes: when heating any unstarted battery stack, controlling the electronically controlled regulating valve connected to any unstarted battery stack to open.

[0012] In an embodiment of the present application, it also includes: in the process of heating any unstarted battery stack, real-time monitoring of the outlet temperature of all started battery stacks; judging whether all started battery stacks are adjusted to a thermal equilibrium state according to the outlet temperature; when all started battery stacks are adjusted to a thermal equilibrium state, judging whether the operating conditions for heating any unstarted battery stack are met; when the operating conditions are met, loading the operating power for heating any unstarted battery stack to a first preset power to start the operation of any unstarted battery stack.

[0013] In an embodiment of the present application, the fuel cell power generation system also includes an electronically controlled three-way valve, a heat exchange water pump and a radiator. The electronically controlled three-way valve is respectively connected to the heating module, the radiator and the heat exchange water pump. The heat exchange water pump is connected to multiple power batteries and multiple battery stacks. The radiator is connected to the heating module. The method also includes: when the outlet temperature of any started battery stack is greater than or equal to the first preset temperature, adjusting the large circulation proportion of the electronically controlled three-way valve and the operating speed of the heat exchange water pump, and controlling the start-up of the radiator to adjust any started battery stack to a thermal equilibrium state.

[0014] In an embodiment of the present application, determining whether the operating conditions of any unstarted battery stack are met includes: obtaining the inlet temperature and outlet temperature of any unstarted battery stack; when the inlet temperature and outlet temperature of any unstarted battery stack are greater than a second preset temperature, controlling any unstarted battery stack to enter a low-temperature start-up mode; when the inlet temperature and outlet temperature of any unstarted battery stack after entering the low-temperature start-up mode are both greater than a third preset temperature, determining that the operating conditions of any unstarted battery stack are met.

[0015] In an embodiment of the present application, when the current operating mode is the low-temperature starting mode, starting the heating module includes: when the current operating mode is the low-temperature starting mode, starting self-heating of any power battery, and obtaining the operating temperature and SOC value of any power battery; determining the discharge power of any power battery according to the operating temperature and the SOC value; when the discharge power is greater than a second preset power, controlling any power battery to provide electrical energy to the heating module to start the heating module.

[0016] In an embodiment of the present application, each battery stack is connected to an electrically controlled regulating valve, and the fuel cell power generation system also includes an electrically controlled three-way valve and a main water pump. The electrically controlled three-way valve is respectively connected to the heating module and the main water pump, and the main water pump is connected to multiple battery stacks. Heating any battery stack through the heating module to start the operation of any battery stack includes: adjusting the small circulation proportion of the electrically controlled three-way valve to the maximum proportion, and controlling the electrically controlled regulating valve and the main water pump connected to any battery stack to open, so as to heat any battery stack through the heating module; in the process of heating any battery stack through the heating module, obtaining the inlet temperature and outlet temperature of any battery stack in real time; when the inlet temperature and outlet temperature of any battery stack are greater than the second preset temperature, determining that any battery stack has successfully started itself; when the inlet temperature and outlet temperature of any battery stack after successful self-start are both greater than the third preset temperature, controlling the heating module to close, and loading the operating power of any battery stack to the first preset power to start the operation of any battery stack.

[0017] A second aspect of the present application provides a low temperature starting device for a fuel cell power generation system, comprising:

[0018] a memory configured to store instructions;

[0019] The processor is configured to call instructions from the memory and implement the above-mentioned low-temperature startup method of the fuel cell power generation system when executing the instructions.

[0020] A third aspect of the present application provides a machine-readable storage medium having instructions stored thereon, which, when executed by a processor, configures the processor to execute the above-mentioned low-temperature startup method for a fuel cell power generation system.

[0021] A fourth aspect of the present application provides a fuel cell power generation system, comprising:

[0022] heat sink;

[0023] Heating module;

[0024] Electric three-way valve;

[0025] Main water pump;

[0026] Multiple battery stacks are connected to the heating module and radiator through the main water pump and the electronically controlled three-way valve;

[0027] Heat exchange water pump;

[0028] Multiple power batteries are connected to the main water pump through a heat exchange stop valve and a switch valve connected to the multiple power batteries, and are connected to the electronically controlled three-way valve through a heat exchange water pump;

[0029] The above-mentioned low-temperature starting device for the fuel cell power generation system.

[0030] Through the above technical scheme, the fuel cells are started one by one, and the heat generated by the first started fuel cell is used to heat the later started fuel cell and the power battery. Combined with the outlet temperature of all the started fuel cells, each fuel cell reaches thermal balance, thereby achieving low-energy rapid start-up of the fuel cell power generation system in low-temperature start-up mode.

[0031] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific implementations, they are used to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. In the accompanying drawings:

[0033] Figure 1 A schematic diagram of a process flow of a low-temperature startup method for a fuel cell power generation system according to an embodiment of the present application is schematically shown;

[0034] Figure 2The schematic diagram of the structure of the fuel cell power generation system according to the embodiment of the present application is shown;

[0035] Figure 3 The internal structure diagram of a computer device according to an embodiment of the present application is schematically shown. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It should be understood that the specific implementation methods described herein are only used to illustrate and explain the embodiments of the present application, and are not used to limit the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0037] It should be noted that if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0038] Figure 1 The schematic diagram of the process of the low temperature start-up method of the fuel cell power generation system according to the embodiment of the present application is shown. Figure 1 As shown, in one embodiment of the present application, a low temperature start method of a fuel cell power generation system is provided, the fuel cell power generation system includes a heating module, a plurality of power batteries and a plurality of battery stacks, the heating module is respectively connected to the plurality of power batteries and the plurality of battery stacks, and includes the following steps:

[0039] Step 101: Determine the current operation mode of the fuel cell power generation system.

[0040] The fuel cell power generation system includes a heating module, a plurality of power batteries and a plurality of battery stacks, and the heating module is connected to the plurality of power batteries and the plurality of battery stacks respectively. The processor can determine a current operation mode of the fuel cell power generation system.

[0041] Specifically, after receiving the start-up instruction, the processor monitors the ambient temperature of the environment where the fuel cell power generation system is located. The processor can compare the ambient temperature with a preset temperature. The preset temperature can be set according to actual conditions. When the ambient temperature is greater than the preset temperature, the processor can determine that the current operating mode of the fuel cell power generation system is a normal temperature start-up mode. When the ambient temperature is less than or equal to the preset temperature, the processor can determine that the current operating mode of the fuel cell power generation system is a low temperature start-up mode.

[0042] Step 102: When the current operation mode is the low-temperature start mode, start the heating module, and heat any fuel cell stack through the heating module to start the operation of any fuel cell stack.

[0043] When the current operation mode is the low-temperature start-up mode, the processor may start the heating module and heat any battery stack through the heating module to start the operation of any battery stack.

[0044] In an embodiment of the present application, when the current operating mode is the low-temperature starting mode, starting the heating module includes: when the current operating mode is the low-temperature starting mode, starting self-heating of any power battery, and obtaining the operating temperature and SOC value of any power battery; determining the discharge power of any power battery according to the operating temperature and the SOC value; when the discharge power is greater than a second preset power, controlling any power battery to provide electrical energy to the heating module to start the heating module.

[0045] When the current operating mode is the low-temperature start mode, the processor may start self-heating of any power battery and obtain the operating temperature and SOC value of any power battery. The processor may determine the discharge power of any power battery according to the operating temperature and SOC value. When determining the discharge power, the processor may obtain a relationship table between a preset operating temperature, a preset SOC value and a preset discharge power, traverse the relationship table, obtain a preset operating temperature and a preset SOC value that match the operating temperature and SOC value, and then determine the preset discharge power corresponding to the matched preset operating temperature and preset SOC value as the discharge power of any power battery.

[0046] The processor can compare the discharge power of any power battery with the second preset power. The second preset power can be customized according to actual conditions, but the second preset power must meet the operation of the heating module and a battery stack. If the discharge power of any power battery is greater than the second preset power, any power battery can be controlled to provide power to the heating module to start the heating module.

[0047] In an embodiment of the present application, each battery stack is connected to an electrically controlled regulating valve, and the fuel cell power generation system also includes an electrically controlled three-way valve and a main water pump. The electrically controlled three-way valve is respectively connected to the heating module and the main water pump, and the main water pump is connected to multiple battery stacks. Heating any battery stack through the heating module to start the operation of any battery stack includes: adjusting the small circulation proportion of the electrically controlled three-way valve to the maximum proportion, and controlling the electrically controlled regulating valve and the main water pump connected to any battery stack to open, so as to heat any battery stack through the heating module; in the process of heating any battery stack through the heating module, obtaining the inlet temperature and outlet temperature of any battery stack in real time; when the inlet temperature and outlet temperature of any battery stack are greater than the second preset temperature, determining that any battery stack has successfully started itself; when the inlet temperature and outlet temperature of any battery stack after successful self-start are both greater than the third preset temperature, controlling the heating module to close, and loading the operating power of any battery stack to the first preset power to start the operation of any battery stack.

[0048] Each stack is connected to an electronically controlled regulating valve. The fuel cell power generation system also includes an electronically controlled three-way valve and a main water pump. The electronically controlled three-way valve is connected to the heating module and the main water pump respectively. The main water pump is connected to multiple stacks. The processor can adjust the small cycle ratio of the electronically controlled three-way valve to the maximum ratio, and control the electronically controlled regulating valve and the main water pump connected to any stack to open, so as to heat any stack through the heating module.

[0049] In the process of heating any stack by the heating module, the processor can obtain the inlet temperature and outlet temperature of any stack in real time. The processor can compare the inlet temperature and outlet temperature during heating with the second preset temperature. The second preset temperature can be customized according to actual conditions.

[0050] When the inlet temperature and outlet temperature of any stack are greater than the second preset temperature, the processor can determine that any stack has successfully started itself, that is, any stack has entered the low-temperature self-starting mode. When any stack is in the low-temperature self-starting mode, a certain amount of hydrogen and oxygen are introduced, and the fuel cell stack starts the low current output by itself, and the average voltage of the single cell is maintained at a certain value by adjusting the power generation and the gas supply chain.

[0051] In one embodiment, when the inlet temperature and the outlet temperature of any fuel cell stack are less than or equal to the second preset temperature, the processor may determine that any fuel cell stack has not successfully started itself.

[0052] After any stack is successfully started, the inlet temperature and outlet temperature of any stack are obtained in real time. The processor can compare the inlet temperature and outlet temperature after the successful start-up with the third preset temperature. The third preset temperature can be customized according to actual conditions. The third preset temperature is greater than the second preset temperature.

[0053] When the inlet temperature and outlet temperature of any fuel cell stack after successful self-start are greater than the third preset temperature, the processor can control the heating module to turn off, and any fuel cell stack enters the operation mode, and loads the operating power of any fuel cell stack to the first preset power to start the operation of any fuel cell stack.

[0054] In one embodiment, when the inlet temperature or outlet temperature of any fuel cell stack after the successful self-start is less than or equal to the third preset temperature, the self-start state of any fuel cell stack is maintained.

[0055] Step 103: For any unstarted battery stack among the multiple battery stacks and any unheated power battery among the multiple power batteries, heat any unstarted battery stack and any unheated power battery by using the heat energy generated by all the started battery stacks.

[0056] When any battery stack is started, any unstarted battery stack can be selected from multiple battery stacks, and any unheated power battery can be selected from multiple power batteries. The heat energy generated by all the started battery stacks can be used to heat any unstarted battery stack and any unheated power battery.

[0057] In an embodiment of the present application, the number of started battery stacks is one, and heating any unheated power battery and any unstarted battery stack by using the heat energy generated by the operation of all the started battery stacks includes: when the number of started battery stacks is one, heating any unheated power battery and any unstarted battery stack at the same time by using the heat energy generated by the operation of all the started battery stacks.

[0058] After starting any battery stack, if the number of started battery stacks is one, that is, all the currently started battery stacks are any of the battery stacks, then any unheated power battery and any unstarted battery stack can be heated simultaneously by the heat energy generated by the operation of all the started battery stacks, that is, the heat energy generated by the operation of any of the battery stacks.

[0059] In an embodiment of the present application, each power battery is respectively connected to a switch valve, and the fuel cell power generation system also includes a heat exchange water pump and a heat exchange stop valve, the heat exchange water pump is connected to multiple power batteries, and the heat exchange stop valve is connected to each switch valve, and the method also includes: when heating any unheated power battery, controlling the switch valve, heat exchange stop valve and heat exchange water pump connected to any unheated power battery to be opened; when the operating temperature of any unheated power battery reaches a preset operating temperature, controlling the switch valve connected to any unheated power battery to be closed.

[0060] Each power battery is connected to a switch valve, and the fuel cell power generation system also includes a heat exchange water pump and a heat exchange stop valve. The heat exchange water pump is connected to multiple power batteries, and the heat exchange stop valve is connected to each switch valve. The heat exchange water pump is used to control the heat exchange flow rate and thus the heat exchange amount. The heat exchange stop valve is used to control the on and off of the power battery heat exchange branch.

[0061] If the number of started battery stacks is one, that is, all the currently started battery stacks are any of the battery stacks, when heating any unheated power battery, the processor can control the switch valve, heat exchange shut-off valve and heat exchange water pump connected to any unheated power battery to open, and heat the any unheated power battery through the heat energy generated by the any of the battery stacks.

[0062] When the operating temperature of any unheated power battery reaches the preset operating temperature, the processor can control the switch valve connected to any unheated power battery to close, and at this time, any unheated power battery is heated by the heat energy generated by any battery stack. The preset operating temperature can be customized according to actual conditions.

[0063] In an embodiment of the present application, each battery stack is connected to an electronically controlled regulating valve, and each electronically controlled regulating valve connected to the battery stack is connected to the heating module. The method also includes: when heating any unstarted battery stack, controlling the electronically controlled regulating valve connected to any unstarted battery stack to open.

[0064] Each battery stack is connected to an electrically controlled regulating valve, and each electrically controlled regulating valve connected to the battery stack is connected to the heating module. If the number of activated battery stacks is one, that is, all currently activated battery stacks are any of the battery stacks, when heating any unactivated battery stack, the processor can control the electrically controlled regulating valve connected to any unactivated battery stack to open, and heat the any unactivated battery stack through the heat energy generated by the any of the battery stacks.

[0065] In an embodiment of the present application, it also includes: in the process of heating any unstarted battery stack, real-time monitoring of the outlet temperature of all started battery stacks; judging whether all started battery stacks are adjusted to a thermal equilibrium state according to the outlet temperature; when all started battery stacks are adjusted to a thermal equilibrium state, judging whether the operating conditions for heating any unstarted battery stack are met; when the operating conditions are met, loading the operating power for heating any unstarted battery stack to a first preset power to start the operation of any unstarted battery stack.

[0066] If the number of started fuel cells is one, that is, all currently started fuel cells are any of the fuel cells, the processor can monitor the outlet temperature of any of the above fuel cells in real time during the heating of any of the unstarted fuel cells. The processor can determine whether any of the above fuel cells is adjusted to a thermal equilibrium state according to the outlet temperature of any of the above fuel cells.

[0067] In an embodiment of the present application, the fuel cell power generation system also includes an electronically controlled three-way valve, a heat exchanger water pump and a radiator. The electronically controlled three-way valve is respectively connected to the heating module, the radiator and the heat exchanger water pump. The heat exchanger water pump is connected to multiple power batteries and multiple battery stacks. The radiator is connected to the heating module. Judging whether all the started battery stacks are adjusted to a thermal equilibrium state based on the outlet temperature includes: when the outlet temperature of any started battery stack is greater than or equal to the first preset temperature, adjusting the large circulation proportion of the electronically controlled three-way valve and the operating speed of the heat exchanger water pump, and controlling the start-up of the radiator to adjust any started battery stack to a thermal equilibrium state.

[0068] The fuel cell power generation system also includes an electronically controlled three-way valve, a heat exchanger pump and a radiator. The electronically controlled three-way valve is connected to the heating module, the radiator and the heat exchanger pump respectively. The heat exchanger pump is connected to multiple power batteries and multiple battery stacks, and the radiator is connected to the heating module. The radiator is used to adjust the temperature of the fuel cell power generation system.

[0069] If the number of started battery stacks is one, that is, all currently started battery stacks are any of the battery stacks, when the outlet temperature of any of the above battery stacks is greater than or equal to the first preset temperature, the processor can adjust the large circulation proportion of the electronically controlled three-way valve and the operating speed of the heat exchange water pump, and control the radiator to start, so as to adjust any of the above battery stacks to a thermal equilibrium state. When any of the above battery stacks is adjusted to a thermal equilibrium state, the processor can determine whether the operating conditions for heating any of the unstarted battery stacks are met.

[0070] In an embodiment of the present application, determining whether the operating conditions of any unstarted battery stack are met includes: obtaining the inlet temperature and outlet temperature of any unstarted battery stack; when the inlet temperature and outlet temperature of any unstarted battery stack are greater than a second preset temperature, controlling any unstarted battery stack to enter a low-temperature start-up mode; when the inlet temperature and outlet temperature of any unstarted battery stack after entering the low-temperature start-up mode are both greater than a third preset temperature, determining that the operating conditions of any unstarted battery stack are met.

[0071] The processor may obtain the inlet temperature and outlet temperature of any unstarted battery stack. When the inlet temperature and outlet temperature of any unstarted battery stack are greater than the second preset temperature, the processor may control any unstarted battery stack to enter the low temperature start mode. When the inlet temperature and outlet temperature of any unstarted battery stack after entering the low temperature start mode are both greater than the third preset temperature, the processor may determine that the operating conditions of any unstarted battery stack are met, that is, any unstarted battery stack enters the operating mode.

[0072] When the operating conditions for heating any unstarted battery stack are met, the processor can load the operating power for heating any unstarted battery stack to the first preset power to start the operation of any unstarted battery stack. When loading the operating power of any unstarted battery stack, the outlet temperature of all started battery stacks can continue to be monitored to ensure that all started battery stacks are in thermal equilibrium. After that, the next unstarted battery stack and unheated power battery can be selected until all battery stacks and all power batteries are heated, at which time the low-temperature start of the fuel cell power generation system is completed.

[0073] In an embodiment of the present application, the number of started battery stacks is at least two, and heating any unheated power battery and any unstarted battery stack by the heat energy generated by the operation of all the started battery stacks includes: when the number of started battery stacks is at least two, real-time monitoring of the outlet temperatures of all the started battery stacks, and heating any unheated power battery by the heat energy generated by the operation of all the started battery stacks; when all the started battery stacks are set to a thermal equilibrium state according to the outlet temperatures of all the started battery stacks, judging whether the operating power of the latest started battery stack is greater than or equal to a first preset power; when the operating power of the latest started battery stack is greater than or equal to the first preset power, heating any unstarted battery stack by the heat energy generated by the operation of all the started battery stacks.

[0074] After starting any battery stack, any unstarted battery stack and any unheated power battery are heated by the heat energy generated by the started battery stack. If the unstarted battery stack and any unheated power battery have been heated, then any unstarted battery stack and any unheated power battery can be selected to heat them. At this time, the number of started battery stacks is at least two.

[0075] If the number of started battery stacks is at least two, that is, all the currently started battery stacks include any one of the above-mentioned battery stacks and at least one battery stack that is started after any of the battery stacks, the processor can monitor the outlet temperatures of all the started battery stacks in real time, and heat any unheated power battery through the heat energy generated by the operation of all the started battery stacks, that is, the heat energy generated by the operation of any one of the above-mentioned battery stacks and at least one battery stack that is started after any of the battery stacks.

[0076] In an embodiment of the present application, each power battery is respectively connected to a switch valve, and the fuel cell power generation system also includes a heat exchange water pump and a heat exchange stop valve, the heat exchange water pump is connected to multiple power batteries, and the heat exchange stop valve is connected to each switch valve, and the method also includes: when heating any unheated power battery, controlling the switch valve, heat exchange stop valve and heat exchange water pump connected to any unheated power battery to be opened; when the operating temperature of any unheated power battery reaches a preset operating temperature, controlling the switch valve connected to any unheated power battery to be closed.

[0077] Each power battery is connected to a switch valve, and the fuel cell power generation system also includes a heat exchange water pump and a heat exchange stop valve. The heat exchange water pump is connected to multiple power batteries, and the heat exchange stop valve is connected to each switch valve. The heat exchange water pump is used to control the heat exchange flow rate and thus the heat exchange amount. The heat exchange stop valve is used to control the on and off of the power battery heat exchange branch.

[0078] If the number of started battery stacks is at least two, that is, all currently started battery stacks include any of the above-mentioned battery stacks and at least one battery stack that is started after any of the above-mentioned battery stacks, in this case, when heating any unheated power battery, the processor can control the switch valve, heat exchange cut-off valve and heat exchange water pump connected to any unheated power battery to be opened until the operating temperature of any unheated power battery reaches the preset operating temperature, and control the switch valve connected to any unheated power battery to be closed. At this time, the heating of any unheated power battery is completed by the heat energy generated by any of the above-mentioned battery stacks and at least one battery stack that is started after any of the above-mentioned battery stacks. The preset operating temperature can be customized according to actual conditions.

[0079] If the number of started battery stacks is at least two, before heating any unstarted battery stack, all started battery stacks need to be placed in a thermal equilibrium state to ensure rapid low-temperature startup of the fuel cell power generation system. Specifically, in this case, the processor can place all started battery stacks in a thermal equilibrium state according to the outlet temperature of all started battery stacks. Specifically, as above, for any started battery stack, if the outlet temperature of the started battery stack is greater than or equal to the first preset temperature, the large circulation proportion of the electronically controlled three-way valve and the operating speed of the heat exchange water pump can be adjusted, and the radiator can be controlled to start to adjust the started battery stack to a thermal equilibrium state.

[0080] When all started battery stacks are set to a thermal equilibrium state according to the outlet temperatures of all started battery stacks, the processor can determine whether the operating power of the latest started battery stack is greater than or equal to the first preset power. The latest started battery stack refers to the battery stack with the latest start time or the battery stack started at a time closer to the current time. When the operating power of the latest started battery stack is greater than or equal to the first preset power, the processor can heat any unstarted battery stack through the heat energy generated by the operation of all started battery stacks.

[0081] In an embodiment of the present application, each battery stack is connected to an electronically controlled regulating valve, and each electronically controlled regulating valve connected to the battery stack is connected to the heating module. The method also includes: when heating any unstarted battery stack, controlling the electronically controlled regulating valve connected to any unstarted battery stack to open.

[0082] Each battery stack is connected to an electrically controlled regulating valve, and each electrically controlled regulating valve connected to the battery stack is connected to the heating module. If the number of started battery stacks is at least two, that is, all currently started battery stacks include any of the above-mentioned battery stacks and at least one battery stack that is started after any of the battery stacks, in this case, when heating any of the unstarted battery stacks, the electrically controlled regulating valve connected to any of the unstarted battery stacks can be controlled to open. Any unstarted battery stack is heated by any of the above-mentioned battery stacks and at least one battery stack that is started after any of the battery stacks.

[0083] In an embodiment of the present application, it also includes: in the process of heating any unstarted battery stack, real-time monitoring of the outlet temperature of all started battery stacks; judging whether all started battery stacks are adjusted to a thermal equilibrium state according to the outlet temperature; when all started battery stacks are adjusted to a thermal equilibrium state, judging whether the operating conditions for heating any unstarted battery stack are met; when the operating conditions are met, loading the operating power for heating any unstarted battery stack to a first preset power to start the operation of any unstarted battery stack.

[0084] If the number of started fuel cells is at least two, that is, all currently started fuel cells include any of the above-mentioned fuel cells and at least one fuel cell that is started after any of the above-mentioned fuel cells, during the heating of any of the unstarted fuel cells, the processor may monitor in real time the outlet temperature of any of the above-mentioned fuel cells and at least one fuel cell that is started after any of the above-mentioned fuel cells. The processor may determine whether any of the above-mentioned fuel cells and at least one fuel cell that is started after any of the above-mentioned fuel cells are adjusted to a thermal equilibrium state based on the outlet temperature of any of the above-mentioned fuel cells and at least one fuel cell that is started after any of the above-mentioned fuel cells.

[0085] In an embodiment of the present application, the fuel cell power generation system also includes an electronically controlled three-way valve, a heat exchanger water pump and a radiator. The electronically controlled three-way valve is respectively connected to the heating module, the radiator and the heat exchanger water pump. The heat exchanger water pump is connected to multiple power batteries and multiple battery stacks. The radiator is connected to the heating module. Judging whether all the started battery stacks are adjusted to a thermal equilibrium state based on the outlet temperature includes: when the outlet temperature of any started battery stack is greater than or equal to the first preset temperature, adjusting the large circulation proportion of the electronically controlled three-way valve and the operating speed of the heat exchanger water pump, and controlling the start-up of the radiator to adjust any started battery stack to a thermal equilibrium state.

[0086] The fuel cell power generation system also includes an electronically controlled three-way valve, a heat exchanger pump and a radiator. The electronically controlled three-way valve is connected to the heating module, the radiator and the heat exchanger pump respectively. The heat exchanger pump is connected to multiple power batteries and multiple battery stacks, and the radiator is connected to the heating module. The radiator is used to adjust the temperature of the fuel cell power generation system.

[0087] If the number of started fuel cells is at least two, that is, all currently started fuel cells include any of the above-mentioned fuel cells and at least one fuel cell that is started after any of the above-mentioned fuel cells, when the outlet temperature of any of the above-mentioned fuel cells or any of the fuel cells that is started after any of the above-mentioned fuel cells is greater than or equal to the first preset temperature, the processor can adjust the large circulation proportion of the electronically controlled three-way valve and the operating speed of the heat exchange water pump, and control the start-up of the radiator to adjust any of the above-mentioned fuel cells or any of the fuel cells that is started after any of the above-mentioned fuel cells to a thermal equilibrium state.

[0088] When any of the above-mentioned fuel cells and at least one fuel cell that is started after any of the fuel cells are adjusted to a thermal equilibrium state, the processor can determine whether the operating conditions for heating any of the unstarted fuel cells are met.

[0089] In an embodiment of the present application, determining whether the operating conditions of any unstarted battery stack are met includes: obtaining the inlet temperature and outlet temperature of any unstarted battery stack; when the inlet temperature and outlet temperature of any unstarted battery stack are greater than a second preset temperature, controlling any unstarted battery stack to enter a low-temperature start-up mode; when the inlet temperature and outlet temperature of any unstarted battery stack after entering the low-temperature start-up mode are both greater than a third preset temperature, determining that the operating conditions of any unstarted battery stack are met.

[0090] The processor may obtain the inlet temperature and outlet temperature of any unstarted battery stack. When the inlet temperature and outlet temperature of any unstarted battery stack are greater than the second preset temperature, the processor may control any unstarted battery stack to enter the low temperature start mode. When the inlet temperature and outlet temperature of any unstarted battery stack after entering the low temperature start mode are both greater than the third preset temperature, the processor may determine that the operating conditions of any unstarted battery stack are met, that is, any unstarted battery stack enters the operating mode.

[0091] When the operating conditions for heating any unstarted battery stack are met, the processor can load the operating power for heating any unstarted battery stack to the first preset power to start the operation of any unstarted battery stack. When loading the operating power of any unstarted battery stack, the outlet temperature of all started battery stacks can continue to be monitored to ensure that all started battery stacks are in thermal equilibrium. After that, the next unstarted battery stack and unheated power battery can be selected until all battery stacks and all power batteries are heated, at which time the low-temperature start of the fuel cell power generation system is completed.

[0092] Through the above technical scheme, the fuel cells are started one by one, and the heat generated by the first started fuel cell is used to heat the later started fuel cell and the power battery. Combined with the outlet temperature of all the started fuel cells, each fuel cell reaches thermal balance, thereby achieving low-energy rapid start-up of the fuel cell power generation system in low-temperature start-up mode.

[0093] Figure 1 FIG. 1 is a flow chart of a low temperature start-up method for a fuel cell power generation system in one embodiment. It should be understood that although Figure 1 The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. Moreover, Figure 1At least part of the steps may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least part of the sub-steps or stages of other steps.

[0094] In one embodiment, a low temperature starting device for a fuel cell power generation system is provided, comprising:

[0095] a memory configured to store instructions;

[0096] The processor is configured to call instructions from the memory and implement the above-mentioned low-temperature startup method of the fuel cell power generation system when executing the instructions.

[0097] In one embodiment, a storage medium is provided, on which a program is stored, and when the program is executed by a processor, the above-mentioned low-temperature startup method of the fuel cell power generation system is implemented.

[0098] In one embodiment, a processor is provided, and the processor is used to run a program, wherein the program executes the above-mentioned low-temperature startup method of the fuel cell power generation system when it is run.

[0099] In an embodiment of the present application, a fuel cell power generation system is provided, comprising:

[0100] heat sink;

[0101] Heating module;

[0102] Electric three-way valve;

[0103] Main water pump;

[0104] Multiple battery stacks are connected to the heating module and radiator through the main water pump and the electronically controlled three-way valve;

[0105] Heat exchange water pump;

[0106] Multiple power batteries are connected to the main water pump through a heat exchange stop valve and a switch valve connected to the multiple power batteries, and are connected to the electronically controlled three-way valve through a heat exchange water pump;

[0107] The above-mentioned low-temperature starting device for the fuel cell power generation system.

[0108] like Figure 2 As shown, a structural schematic diagram of a fuel cell power generation system is provided.

[0109] The fuel cell power generation system includes a radiator, a heating module, an electronically controlled three-way valve, a stack 1 to a stack n, a temperature and pressure sensor, an electronically controlled regulating valve, a main water pump, a heat exchanger, a heat exchange water pump, a heat exchange stop valve, a power battery 1 to a power battery n, and a switch valve. Among them, the power battery 1 has a self-heating function, which is used to start the heating module.

[0110] A temperature and pressure sensor and an electronically controlled regulating valve are installed at the inlet and outlet of each fuel cell stack. For example, an electronically controlled regulating valve 1 and a temperature and pressure sensor PT1 are installed at the inlet of fuel cell stack 1, an electronically controlled regulating valve 2 and a temperature and pressure sensor PT2 are installed at the outlet of fuel cell stack 1, an electronically controlled regulating valve 3 and a temperature and pressure sensor PT3 are installed at the inlet of fuel cell stack 2, an electronically controlled regulating valve 4 and a temperature and pressure sensor PT4 are installed at the outlet of fuel cell stack 2, an electronically controlled regulating valve 5 and a temperature and pressure sensor PT5 are installed at the inlet of fuel cell stack 3, an electronically controlled regulating valve 6 and a temperature and pressure sensor PT6 are installed at the outlet of fuel cell stack 3, an electronically controlled regulating valve 2n-1 and a temperature and pressure sensor PT2n-1 are installed at the inlet of fuel cell stack n, and an electronically controlled regulating valve 2n and a temperature and pressure sensor PT2n are installed at the outlet of fuel cell stack n.

[0111] The total inlet of stack 1 to stack n is connected to the heating module, and the total outlet is connected to the main water pump. The electric three-way valve is connected to the heating module, the main water pump and one end of the radiator. The other end of the radiator is connected to the heating module and the total inlet of stack 1 to stack n. A heat exchanger is connected between the electric three-way valve and the main water pump. The heat exchanger is connected to the main water pump through a heat exchange stop valve. A heat exchange water pump is connected between the heat exchanger and one end of power battery 2 to power battery n.

[0112] A switch valve is installed between the other end of each power battery in power battery 2 to power battery n and the heat exchange stop valve. For example, switch valve 1 is connected between power battery 2 and the heat exchange stop valve, switch valve 3 is connected between power battery 3 and the heat exchange stop valve, and switch valve n is connected between power battery n and the heat exchange stop valve.

[0113] When receiving the start command and starting the fuel cell power generation system at low temperature, the ambient temperature is detected. If the ambient temperature is greater than Ta, the system enters the normal temperature start mode. If the ambient temperature is less than or equal to Ta, the system enters the low temperature start mode. At this time, the self-heating function of the power battery 1 is activated, and the temperature and battery SOC are monitored in real time. The real-time discharge power of the power battery 1 is determined based on the real-time monitored temperature and battery SOC.

[0114] If the real-time discharge power of power battery 1 is ≤P1, the power battery is continuously heated, the temperature and battery SOC are continuously monitored, and the real-time discharge power of power battery 1 is determined according to the real-time monitored temperature and battery SOC, until the real-time discharge power of power battery 1 is >P1, at which point the real-time discharge power can satisfy the operation of the heating module and a stack. In this case, adjust the small cycle ratio of the electronically controlled three-way valve to 100%, open the electronically controlled regulating valve 1 and the electronically controlled regulating valve 2, start the main water pump, turn on the heating module, and monitor the inlet temperature T1 and outlet temperature T2 of the stack 1. If T1&T2≤Tb, maintain the current state. If T1&T2>Tb, the stack 1 enters the low-temperature self-starting mode. If T1&T2≤Tc, maintain the self-starting state of the stack 1. If T1&T2>Tc, turn off the heating module, and the stack 1 enters the operation mode. The power of the stack 1 is gradually and slowly loaded with P3 as the step until the power of the stack 1 reaches P2. The heat exchange shut-off valve, the heat exchange water pump, and the switch valve 1 are opened to heat the power battery 2. After the operating temperature of the power battery 2 reaches Td, the switch valve 1 is closed, and the electronically controlled regulating valves 3 and 4 can be opened to use the heat generated by the stack 1 to heat the stack 2 until the outlet temperature of the stack 1 is T2≥Te. Then, the large circulation proportion of the electronically controlled three-way valve, the water pump speed, and the radiator are adjusted until the stack 1 reaches thermal balance.

[0115] After the stack 1 reaches thermal equilibrium, the inlet temperature T3 and outlet temperature T4 of the stack 2 are detected until T3&T4>Tb, and the stack 2 enters the low-temperature start-up mode. If T3&T4≤Tc, the self-starting state of the stack 2 is maintained. If T3&T4>Tc, the stack 2 enters the operation mode, gradually increases the power of the stack 2 with P3 as the step, opens the switch valve 2 to heat the power battery 3, and closes the switch valve 2 when the operating temperature of the power battery 3 reaches Td. At the same time, if T2orT4<Te, the state is maintained unchanged. If T2orT4≥Te, adjust the large cycle proportion of the electronically controlled three-way valve, the water pump speed and the radiator until the stack 1 and the stack 2 reach thermal equilibrium. Detect the output power of battery stack 2. If the output power of battery stack 2 is less than P2, gradually increase the output power of battery stack 2 with P3 as the step, and repeatedly determine and detect the inlet and outlet temperatures and output power of battery stack 2 until the output power of battery stack 2 is ≥ P2. Open the electronically controlled regulating valves 5 and 6, and adjust the large circulation ratio of the electronically controlled three-way valve, the speed of the water pump, and the radiator by looking up the table until battery stack 1 and battery stack 2 reach thermal equilibrium.

[0116] Repeat the above operation until the electronically controlled regulating valves 2n-1 and 2n are opened, adjust the large circulation proportion of the electronically controlled three-way valve, the water pump speed and the radiator, until the stack 1, stack 2... stack n-1 reach thermal equilibrium, detect the inlet and outlet temperatures of stack n, until T2n-1&T2n>Tb, stack n enters the low-temperature start-up mode, and maintains the self-starting state of stack n when T2n-1&T2n≤Tc; when T2n-1&T2n>Tc, stack n enters the operation mode, gradually increases the power of stack n with P3 as the step, detects the output power of stack n, and when the output power of stack n is <P2, gradually increases the power of stack 2 with P3 as the step, repeats the judgment and detection of the inlet and outlet temperatures and output power of stack n, until the output power of stack n is ≥P2, and the low-temperature start-up of the fuel cell power generation system is completed.

[0117] In one embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as follows: Figure 3 As shown. The computer device includes a processor A01, a network interface A02, a memory (not shown in the figure) and a database (not shown in the figure) connected via a system bus. Among them, the processor A01 of the computer device is used to provide computing and control capabilities. The memory of the computer device includes an internal memory A03 and a non-volatile storage medium A04. The non-volatile storage medium A04 stores an operating system B01, a computer program B02 and a database (not shown in the figure). The internal memory A03 provides an environment for the operation of the operating system B01 and the computer program B02 in the non-volatile storage medium A04. The database of the computer device is used to store data such as the outlet temperature of the battery stack. The network interface A02 of the computer device is used to communicate with an external terminal through a network connection. When the computer program B02 is executed by the processor A01, a low-temperature start-up method for a fuel cell power generation system is implemented.

[0118] Those skilled in the art will understand that Figure 3 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0119] An embodiment of the present application provides a device, which includes a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, the following steps are implemented: determining a current operating mode of a fuel cell power generation system; when the current operating mode is a low-temperature start-up mode, starting a heating module, and heating any battery stack through the heating module to start the operation of any battery stack; for any unstarted battery stack among multiple battery stacks and any unheated power battery among multiple power batteries, heating any unstarted battery stack and any unheated power battery through the heat energy generated by all the started battery stacks.

[0120] In one embodiment, the number of started battery stacks is one, and heating any unheated power battery and any unstarted battery stack by using the heat energy generated by the operation of all the started battery stacks includes: when the number of started battery stacks is one, heating any unheated power battery and any unstarted battery stack at the same time by using the heat energy generated by the operation of all the started battery stacks.

[0121] In one embodiment, the number of started battery stacks is at least two, and heating any unheated power battery and any unstarted battery stack by the heat energy generated by the operation of all the started battery stacks includes: when the number of started battery stacks is at least two, real-time monitoring of the outlet temperatures of all the started battery stacks, and heating any unheated power battery by the heat energy generated by the operation of all the started battery stacks; when all the started battery stacks are set to a thermal equilibrium state according to the outlet temperatures of all the started battery stacks, judging whether the operating power of the latest started battery stack is greater than or equal to a first preset power; when the operating power of the latest started battery stack is greater than or equal to the first preset power, heating any unstarted battery stack by the heat energy generated by the operation of all the started battery stacks.

[0122] In one embodiment, each power battery is respectively connected to a switch valve, and the fuel cell power generation system also includes a heat exchange water pump and a heat exchange stop valve, the heat exchange water pump is connected to multiple power batteries, and the heat exchange stop valve is connected to each switch valve, and the method also includes: when heating any unheated power battery, controlling the switch valve, heat exchange stop valve and heat exchange water pump connected to any unheated power battery to be opened; when the operating temperature of any unheated power battery reaches a preset operating temperature, controlling the switch valve connected to any unheated power battery to be closed.

[0123] In one embodiment, each battery stack is connected to an electrically controlled regulating valve, and each electrically controlled regulating valve connected to the battery stack is connected to the heating module. The method also includes: when heating any unstarted battery stack, controlling the electrically controlled regulating valve connected to any unstarted battery stack to open.

[0124] In one embodiment, it also includes: in the process of heating any unstarted battery stack, real-time monitoring of the outlet temperature of all started battery stacks; judging whether all started battery stacks are adjusted to a thermal equilibrium state according to the outlet temperature; judging whether the operating conditions for heating any unstarted battery stack are met when all started battery stacks are adjusted to a thermal equilibrium state; and if the operating conditions are met, loading the operating power for heating any unstarted battery stack to a first preset power to start the operation of any unstarted battery stack.

[0125] In one embodiment, the fuel cell power generation system also includes an electronically controlled three-way valve, a heat exchange water pump and a radiator. The electronically controlled three-way valve is respectively connected to the heating module, the radiator and the heat exchange water pump. The heat exchange water pump is connected to multiple power batteries and multiple battery stacks. The radiator is connected to the heating module. The method also includes: when the outlet temperature of any started battery stack is greater than or equal to the first preset temperature, adjusting the large cycle proportion of the electronically controlled three-way valve and the operating speed of the heat exchange water pump, and controlling the start-up of the radiator to adjust any started battery stack to a thermal equilibrium state.

[0126] In one embodiment, determining whether the operating conditions of any unstarted battery stack are met includes: obtaining the inlet temperature and outlet temperature of any unstarted battery stack; when the inlet temperature and outlet temperature of any unstarted battery stack are greater than a second preset temperature, controlling any unstarted battery stack to enter a low-temperature start-up mode; when the inlet temperature and outlet temperature of any unstarted battery stack after entering the low-temperature start-up mode are both greater than a third preset temperature, determining that the operating conditions of any unstarted battery stack are met.

[0127] In one embodiment, when the current operating mode is the low-temperature starting mode, starting the heating module includes: when the current operating mode is the low-temperature starting mode, starting self-heating of any power battery, and obtaining the operating temperature and SOC value of any power battery; determining the discharge power of any power battery according to the operating temperature and the SOC value; when the discharge power is greater than a second preset power, controlling any power battery to provide electrical energy to the heating module to start the heating module.

[0128] In one embodiment, each battery stack is connected to an electronically controlled regulating valve, and the fuel cell power generation system also includes an electronically controlled three-way valve and a main water pump. The electronically controlled three-way valve is respectively connected to the heating module and the main water pump, and the main water pump is connected to multiple battery stacks. Heating any battery stack through the heating module to start the operation of any battery stack includes: adjusting the small circulation ratio of the electronically controlled three-way valve to the maximum ratio, and controlling the electronically controlled regulating valve and the main water pump connected to any battery stack to open, so as to heat any battery stack through the heating module; in the process of heating any battery stack through the heating module, obtaining the inlet temperature and outlet temperature of any battery stack in real time; when the inlet temperature and outlet temperature of any battery stack are greater than the second preset temperature, determining that any battery stack has successfully started itself; when the inlet temperature and outlet temperature of any battery stack after successful self-start are both greater than the third preset temperature, controlling the heating module to close, and loading the operating power of any battery stack to the first preset power to start the operation of any battery stack.

[0129] The present application also provides a computer program product, which, when executed on a data processing device, is suitable for executing a program that initializes the steps of a low-temperature startup method for a fuel cell power generation system.

[0130] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0131] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0132] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0133] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0134] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0135] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0136] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0137] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0138] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A low temperature start-up method for a fuel cell power generation system, characterized in that: The fuel cell power generation system comprises a heating module, a plurality of power batteries and a plurality of battery stacks, the heating module is respectively connected to the plurality of power batteries and the plurality of battery stacks, and the method comprises: determining a current operating mode of the fuel cell power generation system; When the current operation mode is the low-temperature start mode, starting the heating module, and heating any one of the fuel cells by the heating module to start the operation of any one of the fuel cells; For any unstarted battery stack among the multiple battery stacks and any unheated power battery among the multiple power batteries, the heat energy generated by all the started battery stacks is used to heat the unstarted battery stack and the unheated power battery.

2. The low temperature startup method of a fuel cell power generation system according to claim 1, characterized in that: The number of the started battery stack is one, and the heating of any one of the unheated power batteries and any one of the unstarted battery stacks by the heat energy generated by the operation of all the started battery stacks comprises: In the case that the number of started battery stacks is one, the heat energy generated by the operation of all started battery stacks is used to heat the any unheated power battery and the any unstarted battery stack at the same time.

3. The low temperature startup method of a fuel cell power generation system according to claim 1, characterized in that: The number of the started battery stacks is at least two, and the step of heating any one of the unheated power batteries and any one of the unstarted battery stacks by using the heat energy generated by the operation of all the started battery stacks comprises: When the number of the started battery stacks is at least two, the outlet temperatures of all the started battery stacks are monitored in real time, and any unheated power battery is heated by the heat energy generated by the operation of all the started battery stacks; When all the started fuel cells are placed in a thermal equilibrium state according to the outlet temperatures of all the started fuel cells, determining whether the operating power of the latest started fuel cell is greater than or equal to a first preset power; When the operating power of the latest started fuel cell stack is greater than or equal to the first preset power, any one of the unstarted fuel cell stacks is heated by the heat energy generated by the operation of all the started fuel cell stacks.

4. The low temperature startup method of a fuel cell power generation system according to claim 2 or 3, characterized in that: Each power battery is respectively connected to a switch valve, the fuel cell power generation system further includes a heat exchange water pump and a heat exchange stop valve, the heat exchange water pump is connected to the plurality of power batteries, the heat exchange stop valve is connected to each switch valve, and the method further includes: When heating any one of the unheated power batteries, controlling the switch valve, the heat exchange stop valve and the heat exchange water pump connected to the any one of the unheated power batteries to be opened; When the operating temperature of any one of the unheated power batteries reaches a preset operating temperature, the switch valve connected to the any one of the unheated power batteries is controlled to be closed.

5. The low temperature start-up method of a fuel cell power generation system according to claim 2 or 3, characterized in that: Each battery stack is connected to an electrically controlled regulating valve, and each electrically controlled regulating valve connected to the battery stack is connected to the heating module. The method further includes: When heating any one of the unstarted fuel cell stacks, the electronically controlled regulating valve connected to the any one of the unstarted fuel cell stacks is controlled to open.

6. The low temperature startup method of a fuel cell power generation system according to claim 2 or 3, characterized in that: Also includes: In the process of heating any one of the unstarted fuel cells, real-time monitoring of the outlet temperatures of all the started fuel cells; judging whether all started fuel cells are adjusted to a thermal equilibrium state according to the outlet temperature; When all the started fuel cells are adjusted to a thermal equilibrium state, determining whether the operating conditions for heating any one of the unstarted fuel cells are met; When the operating conditions are met, the operating power for heating any one of the unstarted fuel cell stacks is loaded to a first preset power to start the operation of any one of the unstarted fuel cell stacks.

7. The low temperature start-up method of a fuel cell power generation system according to claim 6, characterized in that: The fuel cell power generation system further includes an electrically controlled three-way valve, a heat exchange water pump and a radiator, wherein the electrically controlled three-way valve is connected to the heating module, the radiator and the heat exchange water pump respectively, the heat exchange water pump is connected to the multiple power batteries and the multiple battery stacks, the radiator is connected to the heating module, and judging whether all the started battery stacks are adjusted to a thermal equilibrium state according to the outlet temperature includes: When the outlet temperature of any started fuel cell stack is greater than or equal to the first preset temperature, the large circulation proportion of the electronically controlled three-way valve and the operating speed of the heat exchange water pump are adjusted, and the radiator is controlled to start, so as to adjust any started fuel cell stack to a thermal equilibrium state.

8. The low temperature startup method of a fuel cell power generation system according to claim 6, characterized in that: The determining whether the operating condition of any one of the unstarted fuel cells is met includes: Obtaining an inlet temperature and an outlet temperature of any one of the unstarted fuel cell stacks; When the inlet temperature and the outlet temperature of any one of the unstarted fuel cells are greater than a second preset temperature, controlling the any one of the unstarted fuel cells to enter a low temperature start mode; When the inlet temperature and the outlet temperature of any one of the unstarted fuel cell stacks after entering the low-temperature starting mode are both greater than a third preset temperature, it is determined that the operating conditions of any one of the unstarted fuel cell stacks are met.

9. The low temperature startup method of a fuel cell power generation system according to claim 1, characterized in that: When the current operation mode is a low temperature start mode, starting the heating module includes: When the current operating mode is the low-temperature starting mode, starting self-heating of any power battery, and obtaining an operating temperature and an SOC value of any power battery; Determining the discharge power of any one of the power batteries according to the operating temperature and the SOC value; When the discharge power is greater than the second preset power, any one of the power batteries is controlled to provide electrical energy to the heating module to start the heating module.

10. The low temperature startup method of a fuel cell power generation system according to claim 1, characterized in that: Each battery stack is connected to an electrically controlled regulating valve, and the fuel cell power generation system further includes an electrically controlled three-way valve and a main water pump, wherein the electrically controlled three-way valve is respectively connected to the heating module and the main water pump, and the main water pump is connected to the multiple battery stacks, and heating any battery stack by the heating module to start the operation of any battery stack includes: Adjust the small circulation ratio of the electronically controlled three-way valve to the maximum ratio, and control the electronically controlled regulating valve and the main water pump connected to any one of the battery stacks to start, so as to heat any one of the battery stacks through the heating module; In the process of heating any one of the fuel cell stacks by the heating module, obtaining inlet temperature and outlet temperature of any one of the fuel cell stacks in real time; When the inlet temperature and the outlet temperature of any one of the fuel cell stacks are greater than a second preset temperature, determining that any one of the fuel cell stacks has successfully started itself; When the inlet temperature and the outlet temperature of any of the fuel cell stacks after successful self-start are greater than the third preset temperature, the heating module is controlled to be turned off, and the operating power of any of the fuel cell stacks is loaded to the first preset power to start the operation of any of the fuel cell stacks.

11. A low temperature starting device for a fuel cell power generation system, characterized in that: The device comprises: a memory configured to store instructions; A processor is configured to call the instruction from the memory and implement the low-temperature startup method of a fuel cell power generation system according to any one of claims 1 to 10 when executing the instruction.

12. A machine-readable storage medium, characterized in that: The machine-readable storage medium stores instructions for causing a machine to execute the low-temperature startup method for a fuel cell power generation system according to any one of claims 1 to 10.

13. A fuel cell power generation system, characterized in that: include: heat sink; Heating module; Electric three-way valve; Main water pump; A plurality of battery stacks are connected to a heating module and a radiator through the main water pump and the electrically controlled three-way valve; Heat exchange water pump; A plurality of power batteries, connected to the main water pump through a heat exchange cut-off valve and a switch valve connected to the plurality of power batteries, and connected to the electric-controlled three-way valve through the heat exchange water pump; A low temperature starting device for a fuel cell power generation system according to claim 11.

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