Fuel cell locomotive control method and device

Abstract

The invention provides a fuel cell locomotive control method and device, and relates to the technical field of locomotive control. The method comprises the steps that if it is determined that the acceleration change rate of the fuel cell locomotive is smaller than a preset acceleration change rate threshold value, the opening degree of an expansion machine air flow control valve is increased, and locomotive environment condition parameters are obtained; the locomotive environment condition parameters are compared with preset locomotive environment condition parameters, and the opening degree of a control valve corresponding to the locomotive environment condition parameters is controlled according to the comparison result; and in response to an operation action for reducing and adjusting the required power of the fuel cell locomotive in the running process of the locomotive, reducing the required power, and redistributing the power of the fuel cell system according to the reduced required power. The device executes the method. According to the fuel cell locomotive control method and device provided by the embodiment of the invention, the indoor environment comfort of the locomotive can be improved, and the service life of the power battery in the energy storage system can be prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of locomotive control, and in particular to a fuel cell locomotive control method and device. Background Art

[0002] like Figure 1 As shown, the fuel cell locomotive is equipped with a high-power fuel cell system, and each fuel cell system is modularly arranged; the description is as follows:

[0003] The fuel cell system air inlet 1 and the electric control valve 2 work together to adjust the system / cab dry and wet atmosphere. At the same time, the radiator 3 of the fuel cell system is located above the fuel cell system, which is conducive to the heat dissipation of the fuel cell system. When the fuel cell system fails or cannot meet the environmental requirements of the cab personnel, the locomotive uses the whole vehicle air intake 4 to achieve the whole vehicle air intake. In this state, the gas is dry gas. After the locomotive system gas is used, the gas is discharged through the whole vehicle exhaust 5.

[0004] If a failure occurs when the fuel cell system is operating at full power, and if high-power operating conditions such as acceleration are maintained continuously, the energy storage system will be deeply discharged, reducing the service life of the power battery in the energy storage system. The locomotive's operating performance may also be reduced due to the low SOC of the power battery. At the same time, when the fuel cell locomotive is running, a large amount of heat will be generated, especially the megawatt-class fuel cell locomotive in rail transit. The locomotive generally consists of a radiator and air conditioner to form a temperature control system. The temperature control system has functions such as large-scale heating of the air conditioner in winter and large-scale heat dissipation of the radiator in summer to ensure that the vehicle's ambient temperature is within a reasonable range. The deep discharge of the energy storage system and the temperature control system maintaining the ambient temperature will aggravate the reduction in the service life of the power battery and the additional power consumption. Summary of the invention

[0005] In view of the problems in the prior art, an embodiment of the present invention provides a fuel cell locomotive control method and device, which can at least partially solve the problems in the prior art.

[0006] In one aspect, the present invention provides a fuel cell locomotive control method, comprising:

[0007] If it is determined that the acceleration change rate of the fuel cell locomotive is less than the preset acceleration change rate threshold, the opening of the expander air flow control valve is increased, and the locomotive environmental condition parameters are obtained;

[0008] Comparing the locomotive environmental condition parameter with a preset locomotive environmental condition parameter, and controlling the opening of a control valve corresponding to the locomotive environmental condition parameter according to the comparison result;

[0009] In response to an operation to reduce and adjust the power demand of the fuel cell locomotive during the locomotive's travel, the power demand is reduced, and the fuel cell system power is redistributed according to the reduced power demand.

[0010] Wherein, the locomotive environmental condition parameter includes at least one of a temperature parameter, a humidity parameter and an air pressure parameter; accordingly, controlling the opening of the control valve corresponding to the locomotive environmental condition parameter according to the comparison result includes:

[0011] Controlling the opening of a valve next to a heat exchanger according to a first comparison result between the temperature parameter and a preset temperature parameter;

[0012] Controlling the opening of a valve next to the humidifier according to a second comparison result between the humidity parameter and a preset humidity parameter;

[0013] Controlling the valve opening on the air path side of the battery stack according to a third comparison result of the air pressure parameter and the preset air pressure parameter;

[0014] Wherein, the preset locomotive environmental condition parameter includes at least one of the preset temperature parameter, the preset humidity parameter and the preset air pressure parameter.

[0015] The step of responding to the operation of reducing the required power of the fuel cell locomotive during the locomotive driving process to reduce the required power includes:

[0016] In response to the driver's operation of gradually reducing the required power during the running of the locomotive, the required power is gradually reduced.

[0017] Wherein, the fuel cell locomotive control method further includes:

[0018] If it is determined that the acceleration change rate of the fuel cell locomotive is greater than or equal to the preset acceleration change rate threshold, and it is determined that the discharge rate of the energy storage system is less than the preset discharge rate threshold, then the energy storage system power is controlled to increase while keeping the discharge rate less than the preset discharge rate threshold, and the fuel cell system power is adaptively reduced so that the sum of the energy storage system power and the fuel cell system power remains unchanged.

[0019] Wherein, controlling to increase the power of the energy storage system under the premise of maintaining the discharge rate less than the preset discharge rate threshold comprises:

[0020] Periodically performing the addition of the energy storage system power to a preset power increase amplitude value, and after each addition calculation is performed, pre-estimating a discharge rate prediction value corresponding to the updated energy storage system power;

[0021] If it is determined that the difference between the discharge rate prediction value and the preset discharge rate threshold is less than the preset difference threshold, the step of adding the energy storage system power to the preset power increase amplitude value is no longer performed in the next execution cycle.

[0022] Wherein, the fuel cell locomotive control method further includes:

[0023] If it is determined that the acceleration change rate of the fuel cell locomotive is greater than or equal to the preset acceleration change rate threshold, and it is determined that the discharge rate of the energy storage system is greater than or equal to the preset discharge rate threshold, the fuel cell locomotive is controlled to stop.

[0024] Wherein, before the step of determining whether the acceleration change rate of the fuel cell locomotive is less than a preset acceleration change rate threshold, the fuel cell locomotive control method further includes:

[0025] The required power is obtained according to the locomotive working condition and operating status.

[0026] Allocating power to the controller of the fuel cell locomotive according to the required power to obtain the fuel cell system power;

[0027] If it is determined that the fuel cell system power meets the requirement, a step of determining whether the acceleration change rate of the fuel cell locomotive is less than a preset acceleration change rate threshold is performed.

[0028] In one aspect, the present invention provides a fuel cell locomotive control device, comprising:

[0029] an acquisition unit, for increasing the opening of the expander air flow control valve and acquiring the environmental condition parameters of the locomotive if it is determined that the acceleration change rate of the fuel cell locomotive is less than a preset acceleration change rate threshold;

[0030] A control unit, used for comparing the locomotive environmental condition parameter with a preset locomotive environmental condition parameter, and controlling the opening of the control valve corresponding to the locomotive environmental condition parameter according to the comparison result;

[0031] The reduction unit is used to respond to the operation action of reducing the required power of the fuel cell locomotive during the locomotive running, reduce the required power, and redistribute the fuel cell system power according to the reduced required power.

[0032] In another aspect, an embodiment of the present invention provides an electronic device, including: a processor, a memory, and a bus, wherein:

[0033] The processor and the memory communicate with each other via the bus;

[0034] The memory stores program instructions that can be executed by the processor, and the processor calls the program instructions to execute the following method:

[0035] If it is determined that the acceleration change rate of the fuel cell locomotive is less than the preset acceleration change rate threshold, the opening of the expander air flow control valve is increased, and the locomotive environmental condition parameters are obtained;

[0036] Comparing the locomotive environmental condition parameter with a preset locomotive environmental condition parameter, and controlling the opening of a control valve corresponding to the locomotive environmental condition parameter according to the comparison result;

[0037] In response to an operation to reduce and adjust the power demand of the fuel cell locomotive during the locomotive's travel, the power demand is reduced, and the fuel cell system power is redistributed according to the reduced power demand.

[0038] An embodiment of the present invention provides a non-transitory computer-readable storage medium, including:

[0039] The non-transitory computer-readable storage medium stores computer instructions, which cause the computer to execute the following method:

[0040] If it is determined that the acceleration change rate of the fuel cell locomotive is less than the preset acceleration change rate threshold, the opening of the expander air flow control valve is increased, and the locomotive environmental condition parameters are obtained;

[0041] Comparing the locomotive environmental condition parameter with a preset locomotive environmental condition parameter, and controlling the opening of a control valve corresponding to the locomotive environmental condition parameter according to the comparison result;

[0042] In response to an operation to reduce and adjust the power demand of the fuel cell locomotive during the locomotive's travel, the power demand is reduced, and the fuel cell system power is redistributed according to the reduced power demand.

[0043] The fuel cell locomotive control method and device provided in the embodiment of the present invention, if it is determined that the acceleration change rate of the fuel cell locomotive is less than a preset acceleration change rate threshold, then the expansion machine air flow control valve opening is increased, and the locomotive environmental condition parameters are obtained; the locomotive environmental condition parameters are compared with preset locomotive environmental condition parameters, and the opening of the control valve corresponding to the locomotive environmental condition parameters is controlled according to the comparison results; in response to the operation of reducing and adjusting the required power of the fuel cell locomotive during the locomotive driving process, the required power is reduced, and the fuel cell system power is redistributed according to the reduced required power, which can improve the comfort of the locomotive indoor environment and the service life of the power battery in the energy storage system. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0045] Figure 1 It is a schematic diagram illustrating a fuel cell locomotive provided by the prior art.

[0046] Figure 2 Schematic diagram of a fuel cell system according to an embodiment of the present invention.

[0047] Figure 3 It is a flow chart of a fuel cell locomotive control method provided in one embodiment of the present invention.

[0048] Figure 4 It is a flow chart of a fuel cell locomotive control method provided by another embodiment of the present invention.

[0049] Figure 5 It is a structural schematic diagram of a fuel cell locomotive control device provided by one embodiment of the present invention.

[0050] Figure 6 A schematic diagram of the physical structure of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention more clear, the embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. Here, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention. It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other arbitrarily.

[0052] like Figure 2 As shown, the fuel cell system of the present invention includes a cooling circuit system and an air circuit system. The air circuit system removes air impurities through a filter, and provides air of a certain flow rate, temperature and pressure through an expander (an air compressor with a turbine energy recovery function), and humidifies through a heat exchanger and a humidifier. A part of the air enters the battery stack to generate electricity and heat, and the other part enters the vehicle conditioning system to increase the humidity and other environmental conditions in the cab; the cooling circuit system adds coolant, and a water pump provides coolant of a certain pressure energy and flow rate, and enters the battery stack and the vehicle conditioning system through a large / small circulation structure and a deionizer, and is used for heat exchange between the battery stack and the vehicle conditioning system.

[0053] The contents related to the control method of the present invention are explained. Taking the fuel cell system 1 as an example, a gas flow meter S is set at the air inlet of the air path system. The gas flow meter S monitors the gas flow out of the air path system to prevent insufficient gas flow, which causes gas to enter the battery stack and damage the battery life. A monitoring pressure sensor P, a temperature and humidity sensor T / RH and a gas flow meter S are set at the air inlet of the vehicle adjustment system to prevent the human body from feeling uncomfortable due to changes in the temperature, pressure and dryness and wetness of the vehicle, and to prevent environmental conditions that affect the life of components. Valves ① and ② are set in the air path branch to adjust the temperature and humidity of the vehicle intake system respectively, valve ④ adjusts the air pressure of the vehicle intake system, and valve ⑤ adjusts the air flow of the expander. Valve ③ is used for the cooling path system to adjust the flow of coolant into the stack, and the deionizer removes high-conductivity ions generated by the heat exchange between the coolant and the vehicle adjustment system.

[0054] The valves to be controlled by the method of the present invention include valve ①, valve ②, valve ④ and valve ⑤.

[0055] Figure 3 FIG. 1 is a flow chart of a fuel cell vehicle control method provided by an embodiment of the present invention. Figure 3 As shown, the fuel cell locomotive control method provided by the embodiment of the present invention includes:

[0056] Step S1: If it is determined that the acceleration change rate of the fuel cell locomotive is less than a preset acceleration change rate threshold, the opening of the expander air flow control valve is increased, and the locomotive environmental condition parameters are obtained.

[0057] Step S2: Compare the locomotive environmental condition parameter with a preset locomotive environmental condition parameter, and control the opening of the control valve corresponding to the locomotive environmental condition parameter according to the comparison result.

[0058] Step S3: In response to the operation of reducing the required power of the fuel cell locomotive during the locomotive's travel, the required power is reduced, and the fuel cell system power is redistributed according to the reduced required power.

[0059] In the above step S1, if the device determines that the acceleration change rate of the fuel cell locomotive is less than the preset acceleration change rate threshold, the expansion machine air flow control valve opening is increased, and the locomotive environmental condition parameters are obtained. The device can be a computer device that executes the method, for example, it can include a server. It should be noted that the acquisition and analysis of data involved in the embodiments of the present invention are authorized by the user. The preset acceleration change rate threshold can be set independently according to actual conditions. If the acceleration change rate is less than the preset acceleration change rate threshold, it means that the power comfort is met. After the power comfort is met, it can be determined whether the environmental comfort is met. The expander air flow control valve is the above-mentioned valve ⑤.

[0060] In the above step S2, the device compares the locomotive environmental condition parameter with a preset locomotive environmental condition parameter, and controls the opening of the control valve corresponding to the locomotive environmental condition parameter according to the comparison result. The locomotive environmental condition parameter includes at least one of a temperature parameter, a humidity parameter, and an air pressure parameter; accordingly, controlling the opening of the control valve corresponding to the locomotive environmental condition parameter according to the comparison result includes:

[0061] According to the first comparison result between the temperature parameter and the preset temperature parameter, the opening of the valve next to the heat exchanger is controlled; the valve next to the heat exchanger is valve ①. The opening of the valve next to the heat exchanger can be controlled to be increased or decreased according to the magnitude relationship of the first comparison result.

[0062] According to the second comparison result between the humidity parameter and the preset humidity parameter, the opening of the valve next to the humidifier is controlled; the valve next to the humidifier is valve ②. The opening of the valve next to the humidifier can be controlled to be increased or decreased according to the magnitude relationship of the second comparison result.

[0063] According to the third comparison result between the air pressure parameter and the preset air pressure parameter, the valve opening on the air path side of the battery stack is controlled; the valve on the air path side of the battery stack is valve ④. The valve opening on the air path side of the battery stack can be controlled to be increased or decreased according to the magnitude relationship of the third comparison result.

[0064] The preset locomotive environmental condition parameter includes at least one of the preset temperature parameter, the preset humidity parameter and the preset air pressure parameter. The preset temperature parameter can be understood as a temperature parameter value that makes people feel comfortable indoors; the preset humidity parameter can be understood as a humidity parameter value that makes people feel comfortable indoors; and the preset air pressure parameter can be understood as an air pressure parameter value that makes people feel comfortable indoors.

[0065] In the above step S3, the device responds to the operation action of reducing and adjusting the power demand of the fuel cell locomotive during the locomotive running, reduces the power demand, and redistributes the fuel cell system power according to the reduced power demand. The response to the operation action of reducing and adjusting the power demand of the fuel cell locomotive during the locomotive running, reducing the power demand, includes:

[0066] In response to the driver's operation of gradually reducing the required power during the locomotive's driving, the required power is gradually reduced. When there is a conflict between environmental comfort and power demand, the required power can be reduced according to the driver's wishes to ensure a high level of environmental comfort without affecting the normal driving of the locomotive. The numerical range of the step-by-step reduction of the required power can be set independently according to actual conditions.

[0067] The step of responding to the operation of reducing the required power of the fuel cell locomotive during the locomotive driving process to reduce the required power includes:

[0068] When a fuel cell system fault is detected, an instruction to reduce the required power is generated; the instruction to reduce the required power carries the identification of the faulty fuel cell system and the cause of the fault, and may also carry the required power value that needs to be reduced step by step, so that the driver can trigger the operation of reducing the required power according to the fuel cell system identification, the cause of the fault and the required power value that needs to be reduced step by step, thereby achieving a step-by-step reduction of the required power.

[0069] like Figure 4 As shown, before reducing the required power, for example, the required power of the fuel cell locomotive is 400kW, the power distribution can be distributed according to the ratio of 3:1 between the fuel cell system power and the energy storage system power, that is, the fuel cell system power is 300kW, and the energy storage system power is 100kW, wherein the energy storage system mainly includes supercapacitors and / or power batteries, and the energy storage system power is the sum of the supercapacitor and the power battery power, or the power of a single module of the supercapacitor or the power battery. At the same time, the required power of the fuel cell locomotive, the ratio of the fuel cell system power to the energy storage system power depends on the control and collaborative operation of the locomotive controller and the fuel cell controller. The numerical values ​​listed in this article are only for reference to facilitate the understanding of the design ideas, and are not used as the actual fuel cell system power and energy storage system power ratio in the locomotive required power.

[0070] After reducing the demand power, for example, the demand power of the fuel cell locomotive is 360kW at this time, the power distribution can be allocated according to the ratio of 3:1 between the fuel cell system power and the energy storage system power, that is, the fuel cell system power is 270kW, and the energy storage system power is 90kW. The energy storage system power is reduced by 10kW compared with before, so the power battery discharge will be alleviated, thereby increasing the service life of the power battery.

[0071] The fuel cell locomotive control method further includes:

[0072] If it is determined that the acceleration change rate of the fuel cell locomotive is greater than or equal to the preset acceleration change rate threshold, and it is determined that the discharge rate of the energy storage system is less than the preset discharge rate threshold, then the power of the energy storage system is controlled to increase while maintaining the discharge rate less than the preset discharge rate threshold, and the power of the fuel cell system is adaptively reduced so that the sum of the power of the energy storage system and the power of the fuel cell system remains unchanged. If the acceleration change rate of the fuel cell locomotive is greater than or equal to the preset acceleration change rate threshold, it means that the power comfort is not met, and at this time, whether the environmental comfort is met is no longer considered.

[0073] The preset discharge rate threshold can be set independently according to the actual situation. When the discharge rate of the energy storage system does not exceed the preset discharge rate threshold, it will not affect the service life of the power battery. If the discharge rate of the energy storage system is less than the preset discharge rate threshold, it means that even if the power of the energy storage system is increased, it will not affect the service life of the power battery. It can also reduce the power provided by the fuel cell system to a certain extent, and can cope with the situation of fuel cell system failure. The sum of the energy storage system power and the fuel cell system power is equal to the required power of the fuel cell locomotive. The required power remains unchanged without reducing the required power. That is, if the energy storage system power is increased, the fuel cell system power needs to be reduced by the same power value as the energy storage system power.

[0074] The controlling and increasing the power of the energy storage system under the premise of maintaining the discharge rate less than the preset discharge rate threshold comprises:

[0075] The energy storage system power is added to the preset power increase amplitude value in a periodic manner, and the discharge rate prediction value corresponding to the updated energy storage system power is estimated after each addition calculation is performed; the execution period can be set independently according to the actual situation, and the preset power increase amplitude value can be set independently according to the actual situation. If refined control is required, a smaller preset power increase amplitude value can be set, but more periodic execution is required. A corresponding relationship curve between the discharge rate historical value and the energy storage system power historical value can be established based on historical data, and the discharge rate prediction value corresponding to the currently updated energy storage system power can be determined based on the above corresponding relationship curve.

[0076] If it is determined that the difference between the discharge rate prediction value and the preset discharge rate threshold is less than the preset difference threshold, the step of adding the energy storage system power to the preset power increase amplitude value is no longer performed in the next execution cycle. The preset difference threshold can be set independently according to actual conditions. If the above difference is less than the preset difference threshold, it means that if one more execution cycle is executed, the prerequisite of keeping the discharge rate less than the preset discharge rate threshold may not be met.

[0077] If the difference is greater than or equal to the preset difference threshold, it means that even if one more execution cycle is executed, the prerequisite of maintaining the discharge rate less than the preset discharge rate threshold can be met.

[0078] The fuel cell locomotive control method further includes:

[0079] If it is determined that the acceleration change rate of the fuel cell locomotive is greater than or equal to the preset acceleration change rate threshold, and it is determined that the discharge rate of the energy storage system is greater than or equal to the preset discharge rate threshold, the fuel cell locomotive is controlled to stop. If the discharge rate of the energy storage system is greater than or equal to the preset discharge rate threshold, it means that the service life of the power battery has been affected at this time. If it is not intervened in time, it may even cause serious accidents such as power battery explosion. Therefore, it is necessary to control the fuel cell locomotive to stop.

[0080] Before the step of determining whether the acceleration change rate of the fuel cell locomotive is less than a preset acceleration change rate threshold, the fuel cell locomotive control method further includes:

[0081] The required power is obtained according to the locomotive working condition and operating status.

[0082] The controller power of the fuel cell locomotive is distributed according to the required power to obtain the fuel cell system power; the power can be distributed according to the distribution ratio of 3:1 between the fuel cell system power and the energy storage system power with reference to the above description.

[0083] If it is determined that the fuel cell system power meets the requirement, the step of determining whether the acceleration change rate of the fuel cell vehicle is less than a preset acceleration change rate threshold is performed. Whether the fuel cell system power meets the requirement can be determined by manual confirmation.

[0084] The air path subsystem in the method of the present invention utilizes an expander to recover air with a certain amount of energy. At the same time, the dry air and wet air branches of the air path can enter the vehicle system to increase the appropriate humidity of the air. The cooling path subsystem and the vehicle system cooperate with each other to recover the heat dissipation of the stack to reduce the operating load of the water pump and the radiator. When the locomotive is running, the fault-tolerant control strategy is triggered. First, the mutual cooperation ability of the fuel cell modules is judged, and then the energy storage system follows according to the actual situation. When the acceleration change rate value is less than the threshold, this state is a reasonable control strategy. When the acceleration change rate value is greater than the threshold and the energy storage unit discharge rate is less than the safety value, this state can reduce the load to meet the driver's comfort.

[0085] The method of the present invention has the following beneficial technical effects:

[0086] 1. Multiple fuel cell systems work together to reduce excessive use of power batteries and increase the service life of power batteries;

[0087] 2. Design the layout of the fuel cell system to reduce excessive energy waste, improve energy utilization and reduce costs;

[0088] 3. In case of occasional failure, reduce the impact of failure accidents and improve the convenience of operation and vehicle stability;

[0089] 4. When the fuel cell system operates smoothly, it improves the suitability of the locomotive environmental conditions and enhances the comfort of the driver.

[0090] The fuel cell locomotive control method provided by the embodiment of the present invention increases the opening of the expander air flow control valve and obtains the locomotive environmental condition parameters if it is determined that the acceleration change rate of the fuel cell locomotive is less than a preset acceleration change rate threshold; compares the locomotive environmental condition parameters with preset locomotive environmental condition parameters, and controls the opening of the control valve corresponding to the locomotive environmental condition parameters according to the comparison results; responds to the operation of reducing and adjusting the required power of the fuel cell locomotive during the locomotive driving process, reduces the required power, and redistributes the fuel cell system power according to the reduced required power, which can improve the comfort of the locomotive indoor environment and the service life of the power battery in the energy storage system.

[0091] Further, the locomotive environmental condition parameter includes at least one of a temperature parameter, a humidity parameter and an air pressure parameter; accordingly, controlling the opening of the control valve corresponding to the locomotive environmental condition parameter according to the comparison result includes:

[0092] According to the first comparison result between the temperature parameter and the preset temperature parameter, the opening of the valve next to the heat exchanger is controlled; the above-mentioned embodiment can be referred to for description and will not be repeated here.

[0093] According to the second comparison result between the humidity parameter and the preset humidity parameter, the opening of the valve next to the humidifier is controlled; the above-mentioned embodiment can be referred to for description and will not be repeated here.

[0094] According to the third comparison result between the air pressure parameter and the preset air pressure parameter, the valve opening on the air path side of the battery stack is controlled; the above-mentioned embodiment can be referred to for description and will not be repeated here.

[0095] The preset locomotive environmental condition parameter includes at least one of the preset temperature parameter, the preset humidity parameter and the preset air pressure parameter. The above description can be referred to and will not be repeated here.

[0096] Further, the response to the operation of reducing the required power of the fuel cell locomotive during the locomotive running process to reduce the required power includes:

[0097] In response to the driver's operation of gradually reducing the required power during the locomotive's running, the required power is gradually reduced. The above-mentioned embodiments can be referred to for explanation and will not be described in detail.

[0098] Furthermore, the fuel cell locomotive control method further includes:

[0099] If it is determined that the acceleration change rate of the fuel cell locomotive is greater than or equal to the preset acceleration change rate threshold, and it is determined that the discharge rate of the energy storage system is less than the preset discharge rate threshold, then the energy storage system power is controlled to be increased while maintaining the discharge rate less than the preset discharge rate threshold, and the fuel cell system power is adaptively reduced, so that the sum of the energy storage system power and the fuel cell system power remains unchanged. The above-mentioned embodiments can be referred to for explanation and will not be repeated here.

[0100] Furthermore, the controlling and increasing the power of the energy storage system under the premise of maintaining the discharge rate less than the preset discharge rate threshold comprises:

[0101] The energy storage system power is periodically added to a preset power increase amplitude value, and a discharge rate prediction value corresponding to the updated energy storage system power is estimated after each addition calculation is performed; the above-mentioned embodiment can be referred to for description and will not be repeated here.

[0102] If it is determined that the difference between the discharge rate prediction value and the preset discharge rate threshold is less than the preset difference threshold, the step of adding the energy storage system power to the preset power increase amplitude value is no longer performed in the next execution cycle.

[0103] Furthermore, the fuel cell locomotive control method further includes:

[0104] If it is determined that the acceleration change rate of the fuel cell vehicle is greater than or equal to the preset acceleration change rate threshold, and it is determined that the discharge rate of the energy storage system is greater than or equal to the preset discharge rate threshold, the fuel cell vehicle is controlled to stop.

[0105] Furthermore, before the step of determining whether the acceleration change rate of the fuel cell locomotive is less than a preset acceleration change rate threshold, the fuel cell locomotive control method further includes:

[0106] The required power is obtained according to the locomotive working condition and running state. The above-mentioned embodiment can be referred to for explanation and will not be described in detail.

[0107] The power of the fuel cell vehicle controller is distributed according to the required power to obtain the fuel cell system power; the above-mentioned embodiment can be referred to for description and will not be repeated here.

[0108] If it is determined that the fuel cell system power meets the requirement, the step of determining whether the acceleration change rate of the fuel cell vehicle is less than a preset acceleration change rate threshold is performed.

[0109] Figure 5 FIG. 1 is a schematic diagram of a fuel cell vehicle control device according to an embodiment of the present invention. Figure 5As shown, the fuel cell locomotive control device provided by the embodiment of the present invention includes an acquisition unit 501, a control unit 502 and a reduction unit 503, wherein:

[0110] The acquisition unit 501 is used to increase the opening of the expander air flow control valve and obtain the locomotive environmental condition parameters if it is determined that the acceleration change rate of the fuel cell locomotive is less than a preset acceleration change rate threshold; the control unit 502 is used to compare the locomotive environmental condition parameters with the preset locomotive environmental condition parameters, and control the opening of the control valve corresponding to the locomotive environmental condition parameters according to the comparison result; the reduction unit 503 is used to respond to the operation of reducing the required power of the fuel cell locomotive during the locomotive driving process, reduce the required power, and redistribute the fuel cell system power according to the reduced required power.

[0111] Specifically, the acquisition unit 501 in the device is used to increase the opening of the expander air flow control valve and obtain the locomotive environmental condition parameters if it is determined that the acceleration change rate of the fuel cell locomotive is less than a preset acceleration change rate threshold; the control unit 502 is used to compare the locomotive environmental condition parameters with the preset locomotive environmental condition parameters, and control the opening of the control valve corresponding to the locomotive environmental condition parameters according to the comparison result; the reduction unit 503 is used to respond to the operation of reducing the required power of the fuel cell locomotive during the locomotive driving process, reduce the required power, and redistribute the fuel cell system power according to the reduced required power.

[0112] The fuel cell locomotive control device provided in the embodiment of the present invention increases the opening of the expander air flow control valve and obtains the locomotive environmental condition parameters if it is determined that the acceleration change rate of the fuel cell locomotive is less than a preset acceleration change rate threshold; compares the locomotive environmental condition parameters with preset locomotive environmental condition parameters, and controls the opening of the control valve corresponding to the locomotive environmental condition parameters according to the comparison results; responds to the operation of reducing and adjusting the required power of the fuel cell locomotive during the travel of the locomotive, reduces the required power, and redistributes the fuel cell system power according to the reduced required power, which can improve the comfort of the locomotive indoor environment and the service life of the power battery in the energy storage system.

[0113] The fuel cell locomotive control device provided in the embodiment of the present invention can be specifically used to execute the processing flow of the above-mentioned method embodiments. Its functions are not described in detail here, and reference can be made to the detailed description of the above-mentioned method embodiments.

[0114] Figure 6 A schematic diagram of the physical structure of an electronic device provided in an embodiment of the present invention, such as Figure 6As shown, the electronic device includes: a processor (processor) 601, a memory (memory) 602 and a bus 603;

[0115] The processor 601 and the memory 602 communicate with each other via a bus 603;

[0116] The processor 601 is used to call the program instructions in the memory 602 to execute the methods provided by the above method embodiments, for example, including:

[0117] If it is determined that the acceleration change rate of the fuel cell locomotive is less than the preset acceleration change rate threshold, the opening of the expander air flow control valve is increased, and the locomotive environmental condition parameters are obtained;

[0118] Comparing the locomotive environmental condition parameter with a preset locomotive environmental condition parameter, and controlling the opening of a control valve corresponding to the locomotive environmental condition parameter according to the comparison result;

[0119] In response to an operation to reduce and adjust the power demand of the fuel cell locomotive during the locomotive's travel, the power demand is reduced, and the fuel cell system power is redistributed according to the reduced power demand.

[0120] This embodiment discloses a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium. The computer program includes program instructions. When the program instructions are executed by a computer, the computer can perform the methods provided by the above method embodiments, for example, including:

[0121] If it is determined that the acceleration change rate of the fuel cell locomotive is less than the preset acceleration change rate threshold, the opening of the expander air flow control valve is increased, and the locomotive environmental condition parameters are obtained;

[0122] Comparing the locomotive environmental condition parameter with a preset locomotive environmental condition parameter, and controlling the opening of a control valve corresponding to the locomotive environmental condition parameter according to the comparison result;

[0123] In response to an operation to reduce and adjust the power demand of the fuel cell locomotive during the locomotive's travel, the power demand is reduced, and the fuel cell system power is redistributed according to the reduced power demand.

[0124] This embodiment provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, wherein the computer program enables the computer to execute the methods provided by the above method embodiments, for example, including:

[0125] If it is determined that the acceleration change rate of the fuel cell locomotive is less than the preset acceleration change rate threshold, the opening of the expander air flow control valve is increased, and the locomotive environmental condition parameters are obtained;

[0126] Comparing the locomotive environmental condition parameter with a preset locomotive environmental condition parameter, and controlling the opening of a control valve corresponding to the locomotive environmental condition parameter according to the comparison result;

[0127] In response to an operation to reduce and adjust the power demand of the fuel cell locomotive during the locomotive's travel, the power demand is reduced, and the fuel cell system power is redistributed according to the reduced power demand.

[0128] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0129] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks 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 produce 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.

[0130] 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 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0131] 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 A step that specifies a function in one or more boxes.

[0132] In the description of this specification, the description with reference to the terms "one embodiment", "a specific embodiment", "some embodiments", "for example", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0133] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A fuel cell locomotive control method, characterized in that: include: If it is determined that the acceleration change rate of the fuel cell locomotive is less than the preset acceleration change rate threshold, the opening of the expander air flow control valve is increased, and the locomotive environmental condition parameters are obtained; Comparing the locomotive environmental condition parameter with a preset locomotive environmental condition parameter, and controlling the opening of a control valve corresponding to the locomotive environmental condition parameter according to the comparison result; In response to an operation to reduce and adjust the power demand of the fuel cell locomotive during the locomotive's travel, the power demand is reduced, and the fuel cell system power is redistributed according to the reduced power demand.

2. The fuel cell vehicle control method according to claim 1, characterized in that: The locomotive environmental condition parameter includes at least one of a temperature parameter, a humidity parameter and an air pressure parameter; accordingly, controlling the opening of the control valve corresponding to the locomotive environmental condition parameter according to the comparison result includes: Controlling the opening of a valve next to a heat exchanger according to a first comparison result between the temperature parameter and a preset temperature parameter; Controlling the opening of a valve next to the humidifier according to a second comparison result between the humidity parameter and a preset humidity parameter; Controlling the valve opening on the air path side of the battery stack according to a third comparison result of the air pressure parameter and the preset air pressure parameter; Wherein, the preset locomotive environmental condition parameter includes at least one of the preset temperature parameter, the preset humidity parameter and the preset air pressure parameter.

3. The fuel cell vehicle control method according to claim 1, characterized in that: The step of responding to the operation of reducing the required power of the fuel cell locomotive during the locomotive driving process to reduce the required power includes: In response to the driver's operation of gradually reducing the required power during the running of the locomotive, the required power is gradually reduced.

4. The fuel cell vehicle control method according to claim 1, characterized in that: The fuel cell locomotive control method further includes: If it is determined that the acceleration change rate of the fuel cell locomotive is greater than or equal to the preset acceleration change rate threshold, and it is determined that the discharge rate of the energy storage system is less than the preset discharge rate threshold, then the energy storage system power is controlled to increase while keeping the discharge rate less than the preset discharge rate threshold, and the fuel cell system power is adaptively reduced so that the sum of the energy storage system power and the fuel cell system power remains unchanged.

5. The fuel cell vehicle control method according to claim 4, characterized in that: The controlling and increasing the power of the energy storage system under the premise of maintaining the discharge rate less than the preset discharge rate threshold comprises: Periodically performing the addition of the energy storage system power to a preset power increase amplitude value, and after each addition calculation is performed, pre-estimating a discharge rate prediction value corresponding to the updated energy storage system power; If it is determined that the difference between the discharge rate prediction value and the preset discharge rate threshold is less than the preset difference threshold, the step of adding the energy storage system power to the preset power increase amplitude value is no longer performed in the next execution cycle.

6. The fuel cell vehicle control method according to claim 4, characterized in that: The fuel cell locomotive control method further includes: If it is determined that the acceleration change rate of the fuel cell locomotive is greater than or equal to the preset acceleration change rate threshold, and it is determined that the discharge rate of the energy storage system is greater than or equal to the preset discharge rate threshold, the fuel cell locomotive is controlled to stop.

7. The fuel cell vehicle control method according to any one of claims 1 to 6, characterized in that: Before the step of determining whether the acceleration change rate of the fuel cell locomotive is less than a preset acceleration change rate threshold, the fuel cell locomotive control method further includes: According to the locomotive working condition and running status, the required power is obtained; Allocating power to the controller of the fuel cell locomotive according to the required power to obtain the fuel cell system power; If it is determined that the fuel cell system power meets the requirement, a step of determining whether the acceleration change rate of the fuel cell locomotive is less than a preset acceleration change rate threshold is performed.

8. A fuel cell locomotive control device, characterized in that: include: an acquisition unit, for increasing the opening of the expander air flow control valve and acquiring the environmental condition parameters of the locomotive if it is determined that the acceleration change rate of the fuel cell locomotive is less than a preset acceleration change rate threshold; A control unit, used for comparing the locomotive environmental condition parameter with a preset locomotive environmental condition parameter, and controlling the opening of the control valve corresponding to the locomotive environmental condition parameter according to the comparison result; The reduction unit is used to respond to the operation action of reducing the required power of the fuel cell locomotive during the locomotive running, reduce the required power, and redistribute the fuel cell system power according to the reduced required power.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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