Discharge control method, apparatus and device, and hydrogen fuel vehicle

Abstract

The present disclosure relates to a discharge control method, apparatus and device, and a hydrogen fuel vehicle. The method comprises: when a control device in a hydrogen fuel vehicle receives a charging request signal of an electrical device, acquiring state information of the hydrogen fuel vehicle, the charging request signal carrying a requested voltage and a requested current of the electrical device; on the basis of the requested voltage and the requested current, determining a target power used for external discharge; and when the state information satisfies a preset condition, controlling a fuel cell discharge module of the hydrogen fuel vehicle to discharge to the electrical device on the basis of the target power. Therefore, the hydrogen fuel vehicle can charge other electrical devices without affecting the driving range and the power performance of its own.

Description

Discharge control method, device, control equipment and hydrogen fuel vehicle Technical Field

[0001] The present disclosure relates to the field of charging and discharging, and in particular, to a discharge control method, device, control equipment, and a hydrogen fuel vehicle. Background Art

[0002] Currently, the models that discharge electricity externally are mainly pure electric models and fuel models, which discharge the electricity generated by the engine consuming fuel or the electricity stored in the power battery to other vehicles or loads. Since the driving force of pure electric models comes from the power battery, if they discharge electricity externally on this basis, it will greatly affect the vehicle's own driving range and power performance; while fuel models convert fossil fuels into electricity, which also causes pollution to the environment to a certain extent.

[0003] Summary of the Invention

[0004] To overcome the problems existing in the related art, the present disclosure provides a discharge control method, device, control equipment and a hydrogen fuel vehicle.

[0005] According to a first aspect of an embodiment of the present disclosure, a discharge control method is provided, which is applied to a control device in a hydrogen fuel vehicle. The method includes:

[0006] When receiving a charging request signal from an electric device, obtaining status information of the hydrogen fuel vehicle; the charging request signal carries a requested voltage and a requested current of the electric device;

[0007] determining a target power for external discharge according to the requested voltage and the requested current;

[0008] When the state information satisfies a preset condition, the fuel cell discharge module of the hydrogen fuel vehicle is controlled to discharge to the electrical device according to the target power.

[0009] Optionally, the fuel cell discharge module includes: a fuel cell controller, a hydrogen fuel cell stack and a DCDC.

[0010] Optionally, determining the target power for external discharge according to the requested voltage and the requested current includes:

[0011] Obtaining the auxiliary power of the hydrogen fuel cell stack;

[0012] Acquire a fuel cell target power set, where the target power set includes a plurality of candidate target powers;

[0013] determining a requested power according to the requested current and the requested voltage;

[0014] determining a target power maximum value according to the requested power and the accessory power;

[0015] A maximum value among a plurality of candidate target powers in the fuel cell target power set that are less than or equal to the maximum target power is obtained as the target power.

[0016] Optionally, the controlling the fuel cell discharge module of the hydrogen fuel vehicle to discharge to the electrical device according to the target power includes:

[0017] Sending a DCDC enable instruction to the DCDC;

[0018] Sending a hydrogen fuel cell stack startup instruction to the fuel cell controller to instruct the fuel cell controller to control the hydrogen fuel cell stack to start up;

[0019] Sending the target power to the fuel cell controller to instruct the fuel cell controller to control the hydrogen fuel cell stack to output a first voltage to the DCDC according to the target power;

[0020] The request voltage is sent to the DCDC to instruct the DCDC to convert the first voltage into a second voltage suitable for the powered device; the second voltage is used to discharge the powered device.

[0021] Optionally, determining the maximum target power according to the requested power and the accessory power includes:

[0022] Optionally, determining the maximum target power according to the requested power and the accessory power includes:

[0023] Obtaining a maximum value that is less than or equal to the requested power;

[0024] The target power maximum value is determined according to the sum of the maximum value and the accessory power.

[0025] Optionally, the status information includes: one or more of the whole vehicle signal of the hydrogen fuel vehicle, discharge hard-line switch signal, vehicle driving mode, gear signal, vehicle speed, power battery power, hydrogen fuel cell stack working status and hydrogen fuel cell stack standby power.

[0026] Optionally, the preset conditions include:

[0027] The vehicle signal is that the vehicle has driving conditions;

[0028] The discharge hard-wire switch signal is enabled;

[0029] The vehicle driving mode is a pure electric EV mode;

[0030] The gear signal is neutral and the vehicle speed is less than or equal to the set vehicle speed;

[0031] The power battery capacity is greater than or equal to the set capacity;

[0032] The working state of the hydrogen fuel cell stack is a fault-free state;

[0033] The standby power of the hydrogen fuel cell stack is less than the requested power of the power-consuming device.

[0034] According to a second aspect of an embodiment of the present disclosure, a discharge control device is provided, the device comprising:

[0035] an acquisition module configured to acquire the status information of the hydrogen fuel vehicle upon receiving a charging request signal from an electric device; the charging request signal carries a requested voltage and a requested current of the electric device;

[0036] A determination module: determining a target power for external discharge according to the requested voltage and the requested current;

[0037] The control module is configured to control the fuel cell discharge module of the hydrogen fuel vehicle to discharge to the electrical device according to the target power when the state information meets a preset condition.

[0038] According to a third aspect of an embodiment of the present disclosure, there is provided a discharge control device, including:

[0039] a memory having a computer program stored thereon;

[0040] A processor is used to execute the computer program in the memory to implement the steps of the discharge control method provided in the first aspect of the present disclosure.

[0041] According to a fourth aspect of an embodiment of the present disclosure, a hydrogen fuel vehicle is provided, comprising the discharge control device described in the third aspect above.

[0042] The technical solutions provided by the embodiments of the present disclosure may have the following beneficial effects:

[0043] In the above technical solution, when the control device in a hydrogen fuel cell vehicle receives a charge request signal from an electrical device, it obtains the status information of the hydrogen fuel cell vehicle; the charge request signal carries the requested voltage and current of the electrical device; the target power for external discharge is determined based on the requested voltage and current; and when the status information meets preset conditions, the fuel cell discharge module of the hydrogen fuel cell vehicle is controlled to discharge to the electrical device according to the target power. Through the above solution, based on the charge request signal from the electrical device, the fuel cell discharge module of the hydrogen fuel cell vehicle is controlled to discharge to the electrical device, thereby allowing the hydrogen fuel cell vehicle to charge other electrical devices without affecting its own driving range and power performance. At the same time, hydrogen fuel, as a cleaner energy source, also reduces environmental pollution to a certain extent.

[0044] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0046] FIG1 is a flow chart showing a discharge control method according to an exemplary embodiment.

[0047] FIG2 is a flow chart showing another discharge control method according to an exemplary embodiment.

[0048] FIG3 is a flow chart showing another discharge control method according to an exemplary embodiment.

[0049] FIG4 is a flow chart showing another discharge control method according to an exemplary embodiment.

[0050] FIG5 is a flow chart showing another discharge control method according to an exemplary embodiment.

[0051] FIG6 is a block diagram showing a discharge control device according to an exemplary embodiment.

[0052] Fig. 7 is a block diagram showing a control device according to an exemplary embodiment.

[0053] FIG8 is a block diagram of a hydrogen fuel vehicle according to an exemplary embodiment. DETAILED DESCRIPTION

[0054] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0055] It is understood that the terms "first", "second", etc. in this disclosure are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other and do not indicate a specific order or importance.

[0056] It is further understood that although operations are described in a particular order in the drawings in the embodiments of the present disclosure, this should not be construed as requiring that the operations be performed in the particular order shown or in a serial order, or that all of the operations shown be performed to obtain the desired results. In certain circumstances, multitasking and parallel processing may be advantageous.

[0057] It should be noted that all actions of acquiring signals, information or data in this application are carried out in compliance with the relevant data protection laws and policies of the country where they are located and with the authorization given by the owner of the corresponding device.

[0058] FIG1 is a flow chart showing a discharge control method according to an exemplary embodiment. As shown in FIG1 , the method is applied to a control device in a hydrogen fuel vehicle, and includes the following steps:

[0059] In step S11 , when a charging request signal of an electric device is received, the status information of the hydrogen fuel vehicle is acquired; the charging request signal carries a requested voltage and a requested current of the electric device.

[0060] For example, the control device in a hydrogen fuel vehicle may be the vehicle control unit (VCU), which is responsible for managing the energy of the entire vehicle and monitoring the vehicle status, etc. The power-consuming device may be an electric vehicle with charging requirements. When the vehicle control unit VCU receives a charging request signal from the power-consuming device, the vehicle control unit obtains the status information of the vehicle to identify and determine the current status of the vehicle in preparation for discharge. The charging request signal may include a charging request signal containing a requested voltage and a requested current, sent by the battery management system of the power-consuming device.

[0061] Optionally, the status information includes: one or more of the vehicle signal of the hydrogen fuel vehicle, the discharge hard-line switch signal, the vehicle driving mode, the gear signal, the vehicle speed, the power battery charge, the hydrogen fuel cell stack working status and the hydrogen fuel cell stack standby power.

[0062] In step S12 , a target power for external discharge is determined according to the requested voltage and the requested current.

[0063] The target power is the power that can be output to the power-consuming device, determined by the control device according to the requested voltage and requested current of the power-consuming device.

[0064] In step S13 , when the state information meets the preset conditions, the fuel cell discharge module of the hydrogen fuel vehicle is controlled to discharge to the electrical equipment according to the target power.

[0065] Optionally, the vehicle may include a hard-wired switch for external discharge and a DC charging gun. Before discharging, the hard-wired switch for external discharge is turned on and the DC charging gun of the vehicle is connected to the charging port of the electrical equipment. The hard-wired switch for external discharge includes but is not limited to a physical button or virtual button located inside the vehicle. The hard-wired switch for external discharge is turned on and off by operating the button, thereby turning on or off the vehicle's external discharge function.

[0066] In one implementation, the external discharge hard-wire switch can be opened and closed by the driver, or can be opened and closed by the vehicle control system.

[0067] For example, by comparing the vehicle status information obtained in step S11 with the preset conditions, if the status information is consistent with the preset conditions, it is determined that the status information meets the preset conditions, and it can be determined that the current state of the vehicle meets the discharge conditions; when the discharge conditions are met, the vehicle controller controls the fuel cell discharge module to discharge to the electrical device according to the target power determined in step S12;

[0068] Optionally, the preset conditions may include but are not limited to:

[0069] (1) The vehicle signal is in driving condition;

[0070] For example, since there is no engine roar after starting a new energy vehicle such as a hydrogen fuel vehicle, it is difficult for the owner to determine whether the vehicle has started normally and successfully. Therefore, a sign can be set to indicate that the vehicle is ready and meets the driving conditions, such as using a READY indicator light to remind the driver. When the indicator light on the instrument is on, it means that the entire vehicle is ready and the vehicle has been started successfully, confirming that the entire vehicle signal is ready to drive.

[0071] (2) The discharge hard-wire switch signal is enabled;

[0072] Among them, after the external discharge hard-wire switch of the vehicle is turned on, it can be determined that the discharge hard-wire switch signal is enabled.

[0073] (3) The vehicle driving mode is pure electric EV mode;

[0074] Among them, EV mode is a driving mode driven by an electric motor. It can be understood that when the vehicle is running in EV mode, only the electric motor provides power to the vehicle, and the engine does not provide power to the vehicle.

[0075] (4) The gear position signal is neutral and the vehicle speed is less than or equal to the set speed;

[0076] For example, the vehicle speed can be configured according to the vehicle performance, for example, the vehicle speed needs to be set to ≤5km / h; it can be understood that the vehicle's N gear means that the vehicle is in neutral and the vehicle is in the power-on state. At the same time, the N gear can interrupt the connection between the transmission system and the engine, thereby interrupting the engine's power output.

[0077] (5) The power battery capacity is greater than or equal to the set capacity;

[0078] During the vehicle discharge process, it is necessary to ensure that the vehicle's electrical devices are powered normally to ensure that the vehicle is in a powered-on state. This facilitates monitoring and management of the vehicle's discharge function and avoids the problem of charging interruptions to electrical devices due to sudden power outages during the discharge of the hydrogen fuel cell discharge module. For example, the power battery SOC (State of Charge) can be set to ≥ 50%, and the power battery capacity can also be configured according to vehicle performance.

[0079] (6) The hydrogen fuel cell stack is in a fault-free operating state;

[0080] In one implementation, the fault state of the hydrogen fuel cell stack can be determined based on the fault level. For example, the fault levels can be divided into level 1, level 2, level 3, etc. Level 1 corresponds to a minor fault, which is a fault with little impact on the performance of the fuel cell system. It may cause certain functions of the fuel cell system to be restricted or the performance to be slightly reduced, but it can still work normally; Level 2 corresponds to a moderate fault, which is the failure or damage of some components in the fuel cell stack. It may cause the fuel cell system to not work normally or the performance to be significantly reduced, and the affected components need to be repaired or replaced; Level 3 corresponds to a serious fault, which is a fault that has a serious impact on the overall function of the fuel cell stack. It may cause the fuel cell system to completely fail or be unable to provide sufficient power, and emergency repair or replacement of the entire fuel cell stack is required; if the fault level is level 2 or above, the hydrogen fuel cell stack is considered to be in a fault state and cannot be used;

[0081] (7) Charging request flag is a charging request flag;

[0082] For example, the charging request flag may be a corresponding flag set when the vehicle receives a charging request from an electric device, and is used to indicate that a charging request from the electric device has been received.

[0083] (8) The standby power of the fuel cell is less than the power requested by the electrical equipment;

[0084] When at least one or more of the above discharge conditions are met simultaneously, the vehicle is considered to meet the conditions for external discharge. The vehicle controller VCU sends an instruction to the fuel cell discharge module to start charging, and the fuel cell discharge module discharges to the electrical equipment according to the target power carried in the instruction.

[0085] Among them, the power-consuming equipment may be a test vehicle used in the R&D and testing phases. It is understandable that the test vehicle has relatively high battery power requirements in specific research purposes and test scenarios. During the R&D or testing process, there may be situations where the battery cannot be installed or the battery power is insufficient, affecting debugging. Therefore, it is necessary to use other power supply equipment to supply power to the test vehicle;

[0086] The power-consuming device can also be an electric vehicle driven by the user. However, during actual road driving, the electric vehicle may be unable to reach the charging station due to insufficient battery power or the charging station is far away, and other power supply equipment is needed to charge it. In summary, the external discharge hydrogen fuel vehicle in the present disclosure can be used as a mobile power supply equipment to discharge the vehicles in the above scenarios.

[0087] Through the above scheme, when the control device in the hydrogen fuel vehicle receives a charging request signal from an electrical device, the status information of the hydrogen fuel vehicle is obtained; the charging request signal carries the requested voltage and requested current of the electrical device; the target power for external discharge is determined based on the requested voltage and requested current; when the status information meets the preset conditions, the fuel cell discharge module of the hydrogen fuel vehicle is controlled to discharge to the electrical device according to the target power; based on the charging request signal of the electrical device, the fuel cell discharge module of the hydrogen fuel vehicle is controlled to discharge to the electrical device, so that the hydrogen fuel vehicle can charge other electrical devices without affecting its own driving range and power performance. At the same time, hydrogen fuel, as a cleaner energy source, also reduces pollution to the environment to a certain extent.

[0088] In the case where the fuel cell discharge module includes: a fuel cell controller, a hydrogen fuel cell stack, and a DC / DC converter, FIG2 is a flow chart of another discharge control method according to an exemplary embodiment. As shown in FIG2 , the determination of the target power for external discharge according to the requested voltage and the requested current in step S12 may include the following steps:

[0089] In step S121 , the accessory power of the hydrogen fuel cell stack is obtained.

[0090] For example, fuel cell vehicles usually require some additional accessories or auxiliary equipment to support the operation of the fuel cell. These additional related accessories or auxiliary equipment also have certain requirements for electrical power. This part of the power demand is called the accessory power of the fuel cell, such as the power of the hydrogen supply system and the system for monitoring and controlling the operation of the fuel cell. The accessory power demand of the fuel cell stack may vary depending on the vehicle type, scale and design. It is a dynamically changing value and is collected in real time by the fuel cell controller (FCU) in the fuel cell discharge module according to the current working status of the fuel cell stack.

[0091] In step S122 , a fuel cell target power set is obtained, where the target power set includes a plurality of candidate target powers.

[0092] For example, the fuel cell stack can be discretized into multiple economic operating points according to its operating characteristics, and a fuel cell target power set can be formed by the multiple economic operating points, wherein the fuel cell target power set can include multiple candidate target powers, and the number of candidate target powers in the set can be determined according to the characteristics of the fuel cell stack; the fuel cell controller FCU can calculate multiple economic operating points of the fuel cell according to the operating characteristics of the fuel cell stack, and feed them back to the vehicle controller VCU, and the vehicle controller VCU uses the above-mentioned multiple economic operating points to determine multiple candidate target powers, thereby determining the fuel cell target power set.

[0093] In step S123 , the requested power is determined according to the requested current and the requested voltage.

[0094] Optionally, when the vehicle controller receives the requested voltage and requested current carried in the charging request signal, the requested power can be calculated according to the power calculation formula: P=UI, where U is the requested voltage and I is the requested current.

[0095] In step S124 , a target power maximum value is determined based on the requested power and the accessory power.

[0096] For example, the maximum target power that the hydrogen fuel cell discharge module can output needs to be determined based on the requested power of the electrical equipment and the accessory power of the hydrogen fuel cell stack. Therefore, the vehicle controller VCU can determine the maximum target power based on the accessory power described in step S121 and the requested power described in step S124.

[0097] In step S125 , the maximum value among a plurality of candidate target powers in the fuel cell target power set that are less than or equal to the maximum target power is obtained as the target power.

[0098] For example, first, multiple candidate target powers that are less than or equal to the maximum target power described in step S124 may be obtained from the fuel cell target power set, and then the maximum value among the multiple candidate target powers may be obtained as the target power.

[0099] In the case where the fuel cell discharge module includes: a fuel cell controller, a hydrogen fuel cell stack, and a DC / DC, FIG3 is a flow chart of another discharge control method according to an exemplary embodiment. As shown in FIG3 , step S13 of controlling the fuel cell discharge module of the hydrogen fuel vehicle to discharge to the electrical device according to the target power may include the following steps:

[0100] In step S131 , a DCDC enable instruction is sent to the DCDC.

[0101] Among them, DCDC (Direct Current Converter) is a device that converts a DC power supply of a certain voltage level into a DC power supply of another voltage level.

[0102] For example, the vehicle controller VCU sends an enable instruction to the DCDC to instruct the DCDC to start working. After the DCDC is successfully enabled, the enable status can be returned to the vehicle controller VCU for the vehicle to determine whether external discharge can be performed.

[0103] In step S132, a hydrogen fuel cell stack startup instruction is sent to the fuel cell controller to instruct the fuel cell controller to control the hydrogen fuel cell stack to start up.

[0104] For example, the vehicle controller VCU sends an instruction to start the hydrogen fuel cell stack to the fuel cell controller FCU. After receiving the instruction, the fuel cell controller FCU controls the hydrogen fuel cell stack to start up. The fuel cell controller FCU obtains the start-up status of the hydrogen fuel cell stack and responds to the start-up status code, and sends the obtained start-up status code of the hydrogen fuel cell stack to the vehicle controller VCU.

[0105] In step S133 , the target power is sent to the fuel cell controller to instruct the fuel cell controller to control the hydrogen fuel cell stack to output a first voltage to the DCDC according to the target power.

[0106] For example, the vehicle controller VCU determines the target power when it receives the charging request voltage and the charging request current, and sends the target power to the fuel cell controller. It can be understood that the vehicle controller VCU sends the target power to the fuel cell controller FCU. After receiving the target power, the fuel cell controller FCU controls the hydrogen fuel cell stack so that the hydrogen fuel cell stack discharges to the electrical equipment according to the target power. The hydrogen fuel cell stack first outputs a first voltage to the DC converter DCDC based on the electric energy output by the target power.

[0107] In step S134 , a request voltage is sent to the DCDC to instruct the DCDC to convert the first voltage into a second voltage suitable for the powered device; the second voltage is used to discharge the powered device.

[0108] For example, the vehicle controller (VCU) sends the requested voltage carried in the charge request signal to the DC-DC converter (DC-DC). Upon receiving the requested voltage, the DC-DC converter converts the first voltage output by the hydrogen fuel cell stack into a second voltage suitable for the device. This second voltage is then output to the device via the DC charging cable to charge the device. It is understood that if the second voltage is greater than the requested voltage for the device, it indicates that the device is being charged. If the second voltage is less than or equal to the requested voltage, the device will discharge, preventing charging.

[0109] Optionally, if any of the above steps S131 to S132 is not satisfied, the vehicle will end the current discharge.

[0110] FIG4 is a flow chart of another discharge control method according to an exemplary embodiment. As shown in FIG4 , determining the maximum target power according to the requested power and the accessory power in step S124 may include the following steps:

[0111] In step S1241 , a maximum value that is less than or equal to the requested power is obtained.

[0112] In step S1242, the target power maximum value is determined based on the sum of the maximum value and the accessory power.

[0113] For example, by calculation, the target power P Targe Subtract accessory power P ACC The difference is less than or equal to the requested power P Request The value of the target power can be obtained by Target Max , to avoid overcharging of electrical equipment; it can be understood that the maximum value less than or equal to the requested power is first determined, and then according to the above method, the maximum value of the target power is equal to the sum of the maximum value and the accessory power.

[0114] Through the above scheme, when the control device in the hydrogen fuel vehicle receives a charging request signal from an electrical device, the status information of the hydrogen fuel vehicle is obtained; the charging request signal carries the requested voltage and requested current of the electrical device; the target power for external discharge is determined based on the requested voltage and requested current; when the status information meets the preset conditions, the fuel cell discharge module of the hydrogen fuel vehicle is controlled to discharge to the electrical device according to the target power; based on the charging request signal of the electrical device, the fuel cell discharge module of the hydrogen fuel vehicle is controlled to discharge to the electrical device, so that the hydrogen fuel vehicle can charge other electrical devices without affecting its own driving range and power performance. At the same time, hydrogen fuel, as a cleaner energy source, also reduces pollution to the environment to a certain extent.

[0115] FIG5 is a flow chart showing another discharge control method according to an exemplary embodiment. As shown in FIG5 , the method may include:

[0116] In step S51, the electrical device may be a target charging vehicle. After the DC charging gun of the hydrogen fuel vehicle is connected to the charging port of the charging vehicle, the vehicle controller of the hydrogen fuel vehicle receives a charging request signal and changes the content of the corresponding charging request flag.

[0117] In step S52, upon receiving the charging request signal, the vehicle controller turns on the vehicle's external discharge hard-wire switch.

[0118] For example, the content about the vehicle external discharge hard-wire switch has been introduced in the previous text, and the details can be referred to the method described in step S13, which will not be repeated here.

[0119] In step S53 , the vehicle controller calculates the requested power according to the requested voltage and requested current carried in the request signal.

[0120] For example, the method for calculating the requested power has been introduced above, and for details, reference may be made to the method described in step S123 , which will not be described in detail.

[0121] In step S54, the vehicle controller determines whether the external discharge condition is met.

[0122] For example, the determination of the discharge condition has been introduced above. For details, please refer to the method of presetting the condition in the embodiment of FIG. 1 , which will not be described in detail.

[0123] If the conditions are met, the following step S55 is executed; if not, the current discharge is terminated.

[0124] In step S55, the vehicle controller sends an enable instruction to the DCDC.

[0125] In step S56, the vehicle controller sends a hydrogen fuel cell stack startup instruction to the fuel cell controller.

[0126] There is no restriction on the execution order of the above steps S55 and S56, and any one of the steps may be executed first.

[0127] In step S57 , the vehicle controller determines whether the DCDC is enabled and whether the hydrogen fuel cell stack is powered on.

[0128] When the DCDC is enabled and the hydrogen fuel cell stack is powered on, the following step S58 is executed; if not, the discharge is terminated.

[0129] In step S58, the vehicle controller sends the target power to the fuel cell controller.

[0130] For example, the method for calculating the target power has been introduced above. For details, please refer to the method described in steps S121 to S125, which will not be described in detail.

[0131] In step S59 , the vehicle controller sends a request signal carrying a request voltage to the DCDC.

[0132] In step S60 , the fuel cell controller controls the hydrogen fuel cell stack to output a first voltage to the DC / DC converter according to the target power.

[0133] In step S61 , the DC-DC converter converts the first voltage into a second voltage suitable for the target charging vehicle according to the requested voltage, and transmits the second voltage to the target charging vehicle via the DC charging gun.

[0134] For example, the method of controlling the hydrogen fuel cell stack to discharge to the target charging vehicle through the fuel cell controller has been introduced above. For details, please refer to the method described in steps S133-S134, which will not be repeated here.

[0135] Through the above scheme, when the control device in the hydrogen fuel vehicle receives a charging request signal from an electrical device, the status information of the hydrogen fuel vehicle is obtained; the charging request signal carries the requested voltage and requested current of the electrical device; the target power for external discharge is determined based on the requested voltage and requested current; when the status information meets the preset conditions, the fuel cell discharge module of the hydrogen fuel vehicle is controlled to discharge to the electrical device according to the target power; based on the charging request signal of the electrical device, the fuel cell discharge module of the hydrogen fuel vehicle is controlled to discharge to the electrical device, so that the hydrogen fuel vehicle can charge other electrical devices without affecting its own driving range and power performance. At the same time, hydrogen fuel, as a cleaner energy source, also reduces pollution to the environment to a certain extent.

[0136] FIG6 is a block diagram of a discharge control device 600 according to an exemplary embodiment. As shown in FIG6 , the discharge control device 600 includes an acquisition module 610 , a determination module 620 and a control module 630 .

[0137] The acquisition module 610 is used to acquire characteristic information of the discharging vehicle when receiving a charging request signal from an electric device; the charging request signal carries a requested voltage and a requested current of the electric device; and determine a target power according to the requested voltage and the requested current.

[0138] The determination module 620 is configured to obtain status information of the hydrogen fuel vehicle upon receiving a charging request signal from an electric device; the charging request signal carries a requested voltage and a requested current from the electric device.

[0139] The control module 630 is used to control the fuel cell discharge module of the hydrogen fuel vehicle to discharge to the electrical equipment according to the target power when the state information meets the preset conditions.

[0140] In the case of a fuel cell discharge module, including a fuel cell controller, a hydrogen fuel cell stack and a DCDC,

[0141] The determination module 620 includes a first acquisition submodule, a second acquisition submodule, a first determination submodule, a second determination submodule, and a third acquisition submodule;

[0142] The first acquisition submodule is used to obtain the auxiliary power of the hydrogen fuel cell stack;

[0143] The second acquisition submodule is used to acquire a fuel cell target power set, where the target power set includes a plurality of candidate target powers;

[0144] The first determining submodule is configured to determine the requested power according to the requested current and the requested voltage;

[0145] The second determining submodule is configured to determine a target power maximum value according to the requested power and the accessory power;

[0146] The third acquisition submodule is configured to acquire a maximum value among a plurality of candidate target powers in the fuel cell target power set that are less than or equal to the maximum target power, as the target power.

[0147] The control module 630 is used to:

[0148] Send DCDC enable command to DCDC;

[0149] Sending a hydrogen fuel cell stack startup instruction to the fuel cell controller to instruct the fuel cell controller to control the hydrogen fuel cell stack to start up;

[0150] Sending a target power to the fuel cell controller to instruct the fuel cell controller to control the hydrogen fuel cell stack to output a first voltage to the DCDC according to the target power;

[0151] A request voltage is sent to the DCDC to instruct the DCDC to convert the first voltage into a second voltage suitable for the powered device; the second voltage is used to discharge the powered device.

[0152] The second determining submodule is configured to:

[0153] Get the maximum value that is less than or equal to the requested power;

[0154] The target power maximum value is determined based on the sum of the maximum value and the accessory power.

[0155] Optionally, the status information includes: one or more of the vehicle signal of the hydrogen fuel vehicle, the discharge hard-line switch signal, the vehicle driving mode, the gear signal, the vehicle speed, the power battery charge, the hydrogen fuel cell stack working status and the hydrogen fuel cell stack standby power.

[0156] Optionally, the preset conditions include:

[0157] The vehicle signal is in driving condition;

[0158] The discharge hard-wire switch signal is enabled;

[0159] The vehicle driving mode is pure electric EV mode;

[0160] The gear signal is neutral and the vehicle speed is less than or equal to the set speed;

[0161] The power battery level is greater than or equal to the set level;

[0162] The working status of the hydrogen fuel cell stack is fault-free;

[0163] The standby power of the hydrogen fuel cell stack is less than the power requested by the electrical equipment.

[0164] Through the above scheme, when the control device in a hydrogen fuel cell vehicle receives a charge request signal from an electrical device, it obtains the status information of the hydrogen fuel cell vehicle; the charge request signal carries the requested voltage and current of the electrical device; the target power for external discharge is determined based on the requested voltage and current; and when the status information meets preset conditions, the fuel cell discharge module of the hydrogen fuel cell vehicle is controlled to discharge the fuel to the electrical device according to the target power. Based on the charge request signal from the electrical device, the fuel cell discharge module of the hydrogen fuel cell vehicle is controlled to discharge the fuel to the electrical device, thereby allowing the hydrogen fuel cell vehicle to charge other electrical devices without affecting its own driving range and power performance. At the same time, hydrogen fuel, as a cleaner energy source, also reduces environmental pollution to a certain extent.

[0165] Regarding the apparatus in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0166] FIG7 is a block diagram of a control device 700 according to an exemplary embodiment. As shown in FIG7 , the control device 700 may be the aforementioned discharge control device and may include a processor 701 and a memory 702. The control device 700 may also include one or more of a multimedia component 703, an input / output (I / O) interface 704, and a communication component 705.

[0167] The processor 701 is used to control the overall operation of the control device 700 to complete all or part of the steps in the above-mentioned discharge control method. The memory 702 is used to store various types of data to support the operation of the control device 700. Such data may include, for example, instructions for any application or method operating on the control device 700, as well as application-related data, such as contact information, sent and received messages, pictures, audio, video, etc. The memory 702 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The multimedia component 703 may include a screen and an audio component. The screen may be, for example, a touch screen, and the audio component is used to output and / or input audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signal may be further stored in the memory 702 or transmitted via the communication component 705. The audio component also includes at least one speaker for outputting audio signals. The I / O interface 704 provides an interface between the processor 701 and other interface modules, which may be a keyboard, a mouse, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 705 is used for wired or wireless communication between the control device 700 and other devices. Wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G, 4G, NB-IOT, eMTC, or other 5G, etc., or a combination of one or more thereof, is not limited here. Therefore, the corresponding communication component 705 may include: a Wi-Fi module, a Bluetooth module, an NFC module, etc.

[0168] In an exemplary embodiment, the control device 700 can be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the above-mentioned discharge control method.

[0169] In another exemplary embodiment, a computer-readable storage medium including program instructions is further provided. When executed by a processor, the program instructions implement the steps of the above-described discharge control method. For example, the computer-readable storage medium may be the aforementioned memory 702 including the program instructions. The program instructions may be executed by the processor 701 of the control device 700 to implement the above-described discharge control method.

[0170] 8 is a block diagram of a hydrogen fuel vehicle 800 according to an exemplary embodiment. For example, the hydrogen fuel vehicle 800 may include the control device 810 described above.

[0171] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0172] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0173] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A discharge control method, characterized in that: Control devices used in hydrogen fuel vehicles include: When receiving a charging request signal from an electric device, obtaining status information of the hydrogen fuel vehicle; the charging request signal carries a requested voltage and a requested current of the electric device; determining a target power for external discharge according to the requested voltage and the requested current; When the state information meets a preset condition, the fuel cell discharge module of the hydrogen fuel vehicle is controlled to discharge to the electrical device according to the target power.

2. The method according to claim 1, characterized in that The fuel cell discharge module includes: a fuel cell controller, a hydrogen fuel cell stack and a DCDC.

3. The method according to claim 2, characterized in that The determining the target power for external discharge according to the requested voltage and the requested current includes: Obtaining the auxiliary power of the hydrogen fuel cell stack; Acquire a fuel cell target power set, wherein the target power set includes a plurality of candidate target powers; determining a requested power according to the requested current and the requested voltage; Determine a maximum target power value according to the requested power and the accessory power; A maximum value among a plurality of candidate target powers in the fuel cell target power set that are less than or equal to the maximum target power is obtained as the target power.

4. The method according to claim 2, characterized in that: The fuel cell discharge module of the hydrogen fuel vehicle is controlled to discharge to the electrical device according to the target power, including: Sending a DCDC enable instruction to the DCDC; Sending a hydrogen fuel cell stack startup instruction to the fuel cell controller to instruct the fuel cell controller to control the hydrogen fuel cell stack to start up; Sending the target power to the fuel cell controller to instruct the fuel cell controller to control the hydrogen fuel cell stack to output a first voltage to the DCDC according to the target power; The request voltage is sent to the DCDC to instruct the DCDC to convert the first voltage into a second voltage suitable for the power-consuming device; the second voltage is used to Discharge electrical equipment.

5. The method according to claim 3, characterized in that: The determining the maximum target power value according to the requested power and the accessory power includes: Acquire a maximum value that is less than or equal to the requested power; The target power maximum value is determined according to the sum of the maximum value and the accessory power.

6. The method according to claim 3, characterized in that The status information includes: one or more of the whole vehicle signal of the hydrogen fuel vehicle, the discharge hard-line switch signal, the vehicle driving mode, the gear signal, the vehicle speed, the power battery power, the hydrogen fuel cell stack working status and the hydrogen fuel cell stack standby power.

7. The method according to claim 6, characterized in that The preset conditions include: The vehicle signal is that the vehicle has driving conditions; The discharge hard-line switch signal is enabled; The vehicle driving mode is a pure electric EV mode; The gear signal is neutral and the vehicle speed is less than or equal to the set vehicle speed; The power battery capacity is greater than or equal to the set capacity; The working state of the hydrogen fuel cell stack is a fault-free state; The standby power of the hydrogen fuel cell stack is less than the requested power of the power-consuming device.

8. A discharge control device, characterized in that: The device comprises: an acquisition module, configured to acquire the status information of the hydrogen fuel vehicle when receiving a charging request signal from an electric device; the charging request signal carries a requested voltage and a requested current of the electric device; A determination module: determining a target power for external discharge according to the requested voltage and the requested current; The control module is configured to control the fuel cell discharge module of the hydrogen fuel vehicle to discharge to the electrical device according to the target power when the state information meets a preset condition.

9. A discharge control device, characterized in that: include: a memory having a computer program stored thereon; A processor, configured to execute the computer program in the memory to implement the steps of the method according to any one of claims 1 to 7.

10. A hydrogen fuel vehicle, characterized in that: include: The discharge control device as claimed in claim 9.

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