Fuel cell control methods, systems and vehicles

Abstract

This invention provides a fuel cell control method, system, and vehicle. The method includes: acquiring the allowable charging power of the power battery and the minimum output power of the fuel cell; when the allowable charging power of the power battery is less than the minimum output power of the fuel cell, and the temperature of the power battery is greater than or equal to a preset first temperature threshold, performing a first power adjustment on the adjustable load based on the allowable charging power of the power battery, the on / off status of the power battery water-cooled unit, and the on / off status of the air conditioning compressor; when the allowable charging power of the power battery is less than the minimum output power of the fuel cell, and the temperature of the power battery is less than or equal to a preset second temperature threshold, performing a second power adjustment on the adjustable load based on the allowable charging power of the power battery, the on / off status of the power battery heater, and the on / off status of the air conditioning heater. This method enables faster fuel cell startup and avoids overcharging of the power battery.

Description

Technical Field

[0001] This invention relates to the field of fuel cell technology, and in particular to a fuel cell control method, system, and vehicle. Background Technology

[0002] Fuel cells are typically used to power lithium-ion batteries, which in turn power electric motors. However, the permissible charging power of the battery is easily affected by temperature. At room temperature, the permissible charging power of the battery is usually greater than or equal to the minimum output power of the fuel cell; therefore, the fuel cell can start normally and power the battery.

[0003] At high temperatures, the allowable output power of the power battery is typically zero or less than the minimum output power of the fuel cell. Therefore, the power battery needs to self-discharge and cool down to ensure its allowable charging power is greater than or equal to the minimum output power of the fuel cell before starting the fuel cell. This can lead to over-discharging of the power battery, resulting in battery depletion and increased waiting time for the user to start the fuel cell. Similarly, at low temperatures, the allowable output power of the power battery is typically zero or less than the minimum output power of the fuel cell. Therefore, the power battery needs to self-discharge and heat up to ensure its allowable charging power is greater than or equal to the minimum output power of the fuel cell before starting the fuel cell. This can also lead to over-discharging of the power battery, resulting in battery depletion and increased waiting time for the user to start the fuel cell. Furthermore, starting the fuel cell when the allowable charging power of the power battery is less than the minimum output power of the fuel cell will result in overcharging of the power battery, causing irreversible damage. Summary of the Invention

[0004] This invention provides a fuel cell control method, system, and vehicle to solve the problems in the prior art where, under high or low temperature conditions, the power battery needs to be self-discharged and cooled or heated before the fuel cell is started, and the power battery is allowed to charge at a power level greater than or equal to the output power of the fuel cell. This results in excessive discharge of the power battery, leading to power depletion and longer waiting time for the user to wait for the fuel cell to start, as well as overcharging of the power battery.

[0005] This invention provides a fuel cell control method, comprising:

[0006] Obtain the allowable charging power of the power battery and the minimum output power of the fuel cell;

[0007] When the allowable charging power of the power battery is less than the minimum output power of the fuel cell, and the temperature of the power battery is greater than or equal to the preset first temperature threshold, the power battery's allowable charging power, the power battery's water-cooled unit's on status, and the air conditioning compressor's on status are used to adjust the power of the preset adjustable load in the fuel cell to reduce the net output power of the fuel cell and control the fuel cell to start.

[0008] When the allowable charging power of the power battery is less than the minimum output power of the fuel cell, and the temperature of the power battery is less than or equal to a preset second temperature threshold, the adjustable load is adjusted a second time based on the allowable charging power of the power battery, the on state of the power battery heater and the on state of the air conditioning heater, so as to reduce the net output power of the fuel cell and control the start-up of the fuel cell; the first temperature threshold is greater than the second temperature threshold.

[0009] Optionally, the steps of obtaining the allowable charging power of the power battery and the minimum output power of the fuel cell include:

[0010] When the preset fuel cell start-up conditions are met, the allowable charging power of the power battery and the minimum output power of the fuel cell are obtained, and a judgment is made on whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell. The fuel cell start-up conditions are: the power battery charge is less than the preset charge threshold and the fuel cell is in the off state.

[0011] Optionally, it also includes:

[0012] When the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell, a first start-up command is sent to the fuel cell. Based on the first start-up command, the fuel cell is controlled to start and output power at a power within the allowable charging power of the power battery.

[0013] Optionally, the step of adjusting the power of a preset adjustable load within the fuel cell based on the allowable charging power of the power battery, the on / off status of the power battery water-cooled unit, and the on / off status of the air conditioning compressor includes:

[0014] Determine whether the power battery water cooling unit is turned on based on its on / off status.

[0015] If the power battery water-cooled unit is not turned on, a second judgment is made on whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell. If the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell, a second start-up command is issued to the fuel cell. Based on the second start-up command, the fuel cell is controlled to start and the fuel cell is controlled to output power within the allowable charging power of the power battery. If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, the fuel cell start-up operation is stopped.

[0016] If the power battery water-cooled unit is turned on, the system determines whether the air conditioning compressor is turned on based on its status. If the air conditioning compressor is not turned on, the system performs three checks to determine whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell. If the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell, a third start-up command is sent to the fuel cell. Based on the third start-up command, the system controls the fuel cell to start and output power within the allowable charging power of the power battery. If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, the system stops the fuel cell start-up operation.

[0017] Optionally, if the air conditioning compressor is turned on, a fourth start-up command is sent to the fuel cell. Based on the fourth start-up command, four checks are performed to determine whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell. If the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell, a fifth start-up command is sent to the fuel cell. Based on the fifth start-up command, the fuel cell is controlled to start and output power at a power level within the allowable charging power of the power battery. If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, a power adjustment is performed on the preset adjustable load within the fuel cell.

[0018] Optionally, the step of adjusting the power of a preset adjustable load within the fuel cell if the allowable charging power of the power battery is less than the minimum output power of the fuel cell includes:

[0019] If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, then the minimum output power of the fuel cell is subtracted in sequence from the allowable charging power of the power battery, the power of the air conditioning compressor, and the power of the power battery water-cooled unit to obtain the first target power.

[0020] The power of the adjustable load is adjusted to the first target power to reduce the net output power of the fuel cell while controlling the start-up of the fuel cell; the adjustable load includes a fuel cell heater and a fuel cell fan.

[0021] Optionally, the step of performing secondary power adjustment on the adjustable load based on the allowable charging power of the power battery, the on / off status of the power battery heater, and the on / off status of the air conditioning heater includes:

[0022] Determine whether the power battery heater is on based on its on / off status.

[0023] If the power battery heater is not turned on, the system checks five times whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell. If the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell, a sixth start-up command is sent to the fuel cell. Based on the sixth start-up command, the system controls the fuel cell to start and output power within the allowable charging power of the power battery. If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, the system stops the fuel cell start-up operation.

[0024] If the power battery heater is on, the system determines whether the air conditioning heater is on based on its status. If the air conditioning heater is not on, the system checks six times whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell. If the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell, a seventh start-up command is sent to the fuel cell. Based on the seventh start-up command, the system controls the fuel cell to start and output power within the allowable charging power of the power battery. If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, the system stops the fuel cell start-up operation.

[0025] Optionally, if the air conditioner heater is turned on, an eighth start-up command is issued to the fuel cell. Based on the eighth start-up command, seven checks are performed to determine whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell. If the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell, a ninth start-up command is issued to the fuel cell. Based on the ninth start-up command, the fuel cell is controlled to start and output power at a power level within the allowable charging power of the power battery. If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, a secondary power adjustment is performed on the preset adjustable load within the fuel cell. The steps of performing a secondary power adjustment on the preset adjustable load within the fuel cell include:

[0026] If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, then the minimum output power of the fuel cell is subtracted in sequence from the allowable charging power of the power battery, the power of the air conditioner heater, and the power of the power battery heater to obtain the second target power.

[0027] The power of the adjustable load is adjusted to the second target power to reduce the net output power of the fuel cell while controlling the start-up of the fuel cell; the adjustable load includes a fuel cell heater and a fuel cell fan.

[0028] The present invention also provides a fuel cell control system, comprising:

[0029] The acquisition module is used to acquire the allowable charging power of the power battery and the minimum output power of the fuel cell;

[0030] The high-temperature start-up module is used to adjust the power of the preset adjustable load in the fuel cell once, based on the allowable charging power of the power battery, the on-state of the power battery water-cooled unit and the on-state of the air conditioning compressor, when the allowable charging power of the power battery is less than the minimum output power of the fuel cell and the temperature of the power battery is greater than or equal to a preset first temperature threshold, so as to reduce the net output power of the fuel cell and control the start-up of the fuel cell.

[0031] The low-temperature start-up module is used to perform secondary power adjustment on the adjustable load based on the allowable charging power of the power battery, the on-state of the power battery heater, and the on-state of the air conditioning heater, when the allowable charging power of the power battery is less than the minimum output power of the fuel cell and the temperature of the power battery is less than or equal to a preset second temperature threshold, so as to reduce the net output power of the fuel cell and control the start-up of the fuel cell; the first temperature threshold is greater than the second temperature threshold.

[0032] The present invention also provides a vehicle, including: a housing, a fuel cell and a power battery, wherein the housing is provided with a fuel cell control system for controlling the fuel cell, and the fuel cell control system includes: an acquisition module for acquiring the allowable charging power of the power battery and the minimum output power of the fuel cell;

[0033] The high-temperature start-up module is used to adjust the power of the preset adjustable load in the fuel cell once, based on the allowable charging power of the power battery, the on-state of the power battery water-cooled unit and the on-state of the air conditioning compressor, when the allowable charging power of the power battery is less than the minimum output power of the fuel cell and the temperature of the power battery is greater than or equal to a preset first temperature threshold, so as to reduce the net output power of the fuel cell and control the start-up of the fuel cell.

[0034] The low-temperature start-up module is used to perform secondary power adjustment on the adjustable load based on the allowable charging power of the power battery, the on-state of the power battery heater, and the on-state of the air conditioning heater, when the allowable charging power of the power battery is less than the minimum output power of the fuel cell and the temperature of the power battery is less than or equal to a preset second temperature threshold, so as to reduce the net output power of the fuel cell and control the start-up of the fuel cell; the first temperature threshold is greater than the second temperature threshold.

[0035] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the fuel cell control method as described above.

[0036] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the fuel cell control method as described above.

[0037] The beneficial effects of this invention are as follows: The fuel cell control method, system, and vehicle provided by this invention obtain the allowable charging power of the power battery and the minimum output power of the fuel cell. When the allowable charging power of the power battery is less than the minimum output power of the fuel cell, and the temperature of the power battery is greater than or equal to a preset first temperature threshold, a power adjustment is performed on a preset adjustable load within the fuel cell based on the allowable charging power of the power battery, the on / off state of the power battery water-cooled unit, and the on / off state of the air conditioning compressor, to reduce the net output power of the fuel cell and simultaneously control the start-up of the fuel cell. When the allowable charging power of the power battery is less than the minimum output power of the fuel cell, and the temperature of the power battery is less than or equal to a preset second temperature threshold, a secondary power adjustment is performed on the adjustable load based on the allowable charging power of the power battery, the on / off state of the power battery heater, and the on / off state of the air conditioning heater, to reduce the net output power of the fuel cell and simultaneously control the start-up of the fuel cell. This allows for faster fuel cell start-up, avoids overcharging of the power battery, and has a lower cost. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0039] Figure 1 This is a schematic diagram of the process for high-temperature start-up of a fuel cell in the fuel cell control method provided by the present invention;

[0040] Figure 2 This is a schematic diagram of the low-temperature start-up process of the fuel cell in the fuel cell control method provided by the present invention;

[0041] Figure 3 This is a schematic diagram of the fuel cell high-temperature shutdown process in the fuel cell control method provided by the present invention;

[0042] Figure 4This is a schematic diagram of the fuel cell low-temperature shutdown process in the fuel cell control method provided by the present invention;

[0043] Figure 5 This is a schematic diagram of the structure of the fuel cell control system provided by the present invention;

[0044] Figure 6 This is a schematic diagram of the structure of the electronic device provided by the present invention. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0046] The following examples illustrate this approach. Figures 1-6 The present invention describes a fuel cell control method, system, and vehicle.

[0047] Please refer to Figures 1-2 The fuel cell control method provided in this embodiment includes:

[0048] The permissible charging power of the power battery and the minimum output power of the fuel cell are obtained. Specifically, when the preset fuel cell start-up conditions are met (S101), a judgment is made on whether the permissible charging power P1 of the power battery is greater than or equal to the minimum output power P2 of the fuel cell (S102). The fuel cell start-up conditions are: the power battery charge is less than a preset charge threshold, and the fuel cell is in a powered-off state. The permissible charging power of the power battery is a real-time changing power value, which can be obtained by reading the permissible charging power value of the power battery in the vehicle message. The power battery charge refers to the battery state of charge (SOC). The charge threshold can be set according to actual conditions, such as 50% or 80%, etc., which will not be elaborated here.

[0049] Furthermore, a single judgment may result in the following three scenarios:

[0050] I. High Temperature Conditions. Specifically, when the allowable charging power of the power battery is less than the minimum output power of the fuel cell, and the temperature of the power battery is greater than or equal to a preset first temperature threshold, based on the allowable charging power of the power battery, the on / off status of the power battery water-cooled unit, and the on / off status of the air conditioning compressor, a power adjustment is performed on the preset adjustable load within the fuel cell to reduce the net output power of the fuel cell, while simultaneously controlling the fuel cell startup. The first temperature threshold can be set according to actual conditions, such as any temperature value between 45℃ and 50℃. Generally, when the temperature of the power battery is between 45℃ and 50℃, or above 50℃, the allowable charging power of the power battery is relatively small, which is a characteristic of the charging and discharging of the power battery (lithium battery). Therefore, any temperature value between 45℃ and 50℃ can be selected as the first temperature threshold. The net output power of the fuel cell refers to the difference between the output power of the fuel cell and the power of the adjustable load within the fuel cell. The power battery water-cooled unit and the air conditioning compressor are relatively stable loads under high temperature conditions; that is, under high temperature conditions, when the power battery water-cooled unit and the air conditioning compressor are on, the fuel cell typically provides a relatively fixed output power to the power battery water-cooled unit and the air conditioning compressor. By adjusting the power of the fuel cell based on the allowable charging power of the power battery, the on-state of the power battery water-cooled unit, and the on-state of the air conditioning compressor, the power of the fuel cell is reduced, thus reducing the net output power of the fuel cell. This prevents the fuel cell from overcharging the power battery due to excessive output power, enabling the fuel cell to start up quickly under high temperature conditions and shortening the fuel cell start-up time.

[0051] II. Low Temperature Conditions. Specifically, when the allowable charging power of the power battery is less than the minimum output power of the fuel cell, and the temperature of the power battery is less than or equal to a preset second temperature threshold, a secondary power adjustment is performed on the adjustable load based on the allowable charging power of the power battery, the on / off status of the power battery heater (PTC, Positive Temperature Coefficient), and the on / off status of the air conditioning heater. This reduces the net output power of the fuel cell while simultaneously controlling the fuel cell to start. The first temperature threshold is greater than the second temperature threshold. The second temperature threshold can be set according to actual conditions, such as any temperature value between 0℃ and 10℃. Typically, when the temperature of the power battery is between 0℃ and 10℃, or below 0℃, the allowable charging power of the power battery is low or zero (charging is not allowed), which is a characteristic of the charge and discharge of the power battery (lithium battery). Therefore, any temperature value between 0℃ and 10℃ can be selected as the second temperature threshold. By adjusting the adjustable load based on the allowable charging power of the power battery, the on / off status of the power battery heater, and the on / off status of the air conditioning heater, the net output power of the fuel cell is reduced, avoiding excessive output power from the fuel cell to the power battery, which could lead to overcharging and irreversible damage to the power battery. This enables rapid start-up or activation of the fuel cell in low-temperature conditions, effectively shortening the fuel cell start-up time.

[0052] It should be noted that the above-mentioned allowable charging power of the power battery is less than the minimum output power of the fuel cell, including the case where the allowable charging power of the power battery is 0.

[0053] III. Normal Temperature Condition. Specifically, S103: When the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell, a first start-up command is sent to the fuel cell. Based on the first start-up command, the fuel cell is controlled to start and output power within the allowable charging power of the power battery. It should be noted that when the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell, it can be directly determined that the power battery is currently at normal temperature, i.e., it is a normal temperature condition. Therefore, there is no need to perform temperature judgment on the power battery, and the first start-up command can be sent directly to the fuel cell. Based on the first start-up command, the fuel cell is controlled to start and output power within the allowable charging power of the power battery.

[0054] The fuel cell control method in this embodiment can start operating after the vehicle is powered on, covering the entire driving process, thereby achieving real-time control of the fuel cell.

[0055] like Figure 1As shown, in some embodiments, the step of adjusting the power of a preset adjustable load within the fuel cell based on the allowable charging power of the power battery, the on / off state of the power battery water-cooled unit, and the on / off state of the air conditioning compressor includes:

[0056] S201: Determine whether the power battery water-cooling unit is turned on based on its on / off status.

[0057] S202: If the power battery water-cooled unit is not turned on, a second judgment is made on whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell; S13: If the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell, a second start-up command is sent to the fuel cell, and based on the second start-up command, the fuel cell is controlled to start and the fuel cell is controlled to output power within the allowable charging power of the power battery; S204: If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, the fuel cell start-up operation is stopped.

[0058] S205: If the power battery water-cooled unit is turned on, determine whether the air conditioning compressor is turned on based on its on / off status; S206: If the air conditioning compressor is not turned on, make three judgments on whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell; S207: If the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell, issue a third start-up command to the fuel cell, and control the fuel cell to start based on the third start-up command, and control the fuel cell to output power within the allowable charging power of the power battery; S208: If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, stop the fuel cell start-up operation. S209: If the air conditioning compressor is turned on, a fourth start-up command is sent to the fuel cell; S210: Based on the fourth start-up command, four checks are performed to determine whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell; S211: If the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell, a fifth start-up command is sent to the fuel cell. Based on the fifth start-up command, the fuel cell is controlled to start and output power within the allowable charging power of the power battery; S212: If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, the preset adjustable load in the fuel cell is adjusted once to reduce the net output power of the fuel cell, and the fuel cell is controlled to start.

[0059] It should be noted that the steps described above, namely determining whether the power battery water-cooled unit is on and whether the air conditioning compressor is on, are to identify which loads the fuel cell requires power from. Therefore, these steps can be interchanged. For example, you can first determine whether the air conditioning compressor is on, and then determine whether the power battery water-cooled unit is on.

[0060] It should also be noted that because the temperature of the power battery changes in real time, the allowable charging power of the power battery also changes in real time. Therefore, by repeatedly judging whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell in the above steps, it is possible to ensure that the state in which the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell can be captured in a timely manner, so as to facilitate timely control of fuel cell start-up and shorten start-up time. Furthermore, by adjusting the power of the preset adjustable load in the fuel cell, the fuel cell can be started quickly under high temperature conditions, and overcharging of the power battery can be effectively avoided.

[0061] It is worth mentioning that, Figure 1 The steps S101-S209 mentioned above can be performed in the vehicle control unit (VCU), and the steps S210-S212 can be performed in the fuel cell control unit (FCU).

[0062] Specifically, if the allowable charging power of the power battery is less than the minimum output power of the fuel cell, the steps for adjusting the power of the preset adjustable load within the fuel cell include:

[0063] S2121: If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, then the minimum output power of the fuel cell is subtracted in sequence from the allowable charging power of the power battery, the power of the air conditioning compressor, and the power of the power battery water-cooled unit to obtain the first target power.

[0064] S2122: Adjust the power of the adjustable load to the first target power to reduce the net output power of the fuel cell, while controlling the start-up of the fuel cell; the adjustable load includes: a fuel cell heater and a fuel cell fan.

[0065] It should be noted that: the minimum output power of the fuel cell - the allowable charging power of the power battery - the power of the air conditioning compressor - the power of the power battery water-cooled unit = the first target power = the power of the fuel cell heater + the power of the fuel cell fan.

[0066] like Figure 2As shown, in some embodiments, the step of performing secondary power adjustment on the adjustable load based on the allowable charging power of the power battery, the on / off state of the power battery heater, and the on / off state of the air conditioning heater includes:

[0067] S301: Determine whether the power battery heater is on based on its on / off status.

[0068] S302: If the power battery heater is not turned on, perform five checks to determine whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell; S303: If the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell, issue a sixth start-up command to the fuel cell, and control the fuel cell to start based on the sixth start-up command, and control the fuel cell to output power within the allowable charging power of the power battery; S304: If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, stop the fuel cell start-up operation.

[0069] S305: If the power battery heater is on, determine whether the air conditioning heater is on based on its on / off status; S306: If the air conditioning heater is not on, perform six checks to determine whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell; S307: If the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell, issue a seventh start-up command to the fuel cell, and control the fuel cell to start based on the seventh start-up command, and control the fuel cell to output power within the allowable charging power of the power battery; S308: If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, stop the fuel cell start-up operation. S309: If the air conditioner heater is turned on, an eighth start-up command is sent to the fuel cell; S310: Based on the eighth start-up command, seven checks are performed to determine whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell; S311: If the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell, a ninth start-up command is sent to the fuel cell. Based on the ninth start-up command, the fuel cell is controlled to start and output power within the allowable charging power of the power battery; S312: If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, a secondary power adjustment is performed on the preset adjustable load in the fuel cell to reduce the net output power of the fuel cell, and the fuel cell is controlled to start.

[0070] In the above steps, by performing secondary power adjustment on the preset adjustable load inside the fuel cell to reduce the net output power of the fuel cell and control the start-up of the fuel cell, it is possible to effectively avoid the phenomenon of excessive output power of the fuel cell leading to overcharging of the power battery. This approach is highly feasible and reasonable.

[0071] It is worth mentioning that, Figure 2 The steps S101-S309 mentioned above can be performed in the vehicle controller, while steps S310-S312 can be performed in the fuel cell controller.

[0072] Specifically, if the charging power of the power battery is less than the minimum output power of the fuel cell, the steps for secondary power adjustment of the preset adjustable load within the fuel cell include:

[0073] S3121: If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, then the minimum output power of the fuel cell is subtracted in sequence from the allowable charging power of the power battery, the power of the air conditioning heater, and the power of the power battery heater to obtain the second target power.

[0074] S3122: Adjust the power of the adjustable load to the second target power to reduce the net output power of the fuel cell, while controlling the start-up of the fuel cell; the adjustable load includes: a fuel cell heater and a fuel cell fan.

[0075] It should be noted that the minimum output power of the fuel cell - the allowable charging power of the power battery - the power of the air conditioner heater - the power of the power battery heater = the power of the fuel cell heater + the power of the fuel cell fan.

[0076] The above describes the control method for starting up a fuel cell. The following section explains the control method for shutting down a fuel cell.

[0077] Please refer to Figure 3 Under high temperature conditions:

[0078] S401: When the fuel cell is in the powered-on state, start the fuel cell shutdown control process.

[0079] S402: Determine whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell.

[0080] S403: If the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell, then stop the fuel cell shutdown control process.

[0081] S404: If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, then determine whether the power battery water-cooled unit is turned on.

[0082] S405: If the power battery water-cooled unit is not turned on, determine whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell. If the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell, stop the fuel cell shutdown control process.

[0083] S406: If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, a shutdown command is sent to the fuel cell.

[0084] S407: Based on the shutdown command, determine whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell.

[0085] S408: If the power battery's allowable charging power is greater than or equal to the fuel cell's minimum output power, then the fuel cell will be directly shut down.

[0086] S409: If the power battery water-cooled unit is turned on, determine whether the air conditioning compressor is turned on. If the air conditioning compressor is not turned on, proceed to step S405.

[0087] S410: If the air conditioning compressor is turned on, the fuel cell shutdown control process will be stopped.

[0088] S411: If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, the fuel cell will be shut down. During the fuel cell shutdown purging, the power of the preset internal load within the fuel cell will be adjusted. That is, during the fuel cell shutdown purging, the power of the preset internal load within the fuel cell will be increased to reduce the net output power of the fuel cell and avoid overcharging of the power battery.

[0089] It is worth mentioning that, Figure 3 Steps S401-S406, S406 and S410 can be performed in the vehicle controller, while steps S407, S408 and S411 can be performed in the fuel cell controller.

[0090] Please refer to Figure 4 At low temperatures:

[0091] S501: When the fuel cell is in the powered-on state, start the fuel cell shutdown control process.

[0092] S502: Determine whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell.

[0093] S503: If the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell, then stop the fuel cell shutdown control process.

[0094] S504: If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, then determine whether the power battery heater is turned on.

[0095] S505: If the power battery heater is not turned on, determine whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell. If the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell, stop the fuel cell shutdown control process.

[0096] S506: If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, a shutdown command is sent to the fuel cell.

[0097] S507: Based on the shutdown command, determine whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell.

[0098] S508: If the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell, the fuel cell will be directly shut down.

[0099] S509: If the power battery heater is on, determine whether the air conditioning heater is on. If the air conditioning heater is not on, proceed to step S505.

[0100] S510: If the air conditioning heater is turned on, the fuel cell shutdown control process is stopped.

[0101] S511: If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, the fuel cell will be shut down. During the fuel cell shutdown purging, the power of the preset internal load within the fuel cell will be adjusted. That is, during the fuel cell shutdown purging, the power of the preset internal load within the fuel cell will be increased to reduce the net output power of the fuel cell and avoid overcharging of the power battery.

[0102] It is worth mentioning that, Figure 4 Steps S501-S506, S506 and S510 can be performed in the vehicle controller, while steps S507, S508 and S511 can be performed in the fuel cell controller.

[0103] The fuel cell control system provided by the present invention is described below. The fuel cell control system described below can be referred to in correspondence with the fuel cell control method described above.

[0104] Please refer to Figure 5 The fuel cell control system provided in this embodiment includes:

[0105] The acquisition module 501 is used to acquire the allowable charging power of the power battery and the minimum output power of the fuel cell;

[0106] The high-temperature start-up module 502 is used to adjust the power of a preset adjustable load in the fuel cell once, based on the allowable charging power of the power battery, the on-state of the power battery water-cooled unit and the on-state of the air conditioning compressor, when the allowable charging power of the power battery is less than the minimum output power of the fuel cell and the temperature of the power battery is greater than or equal to a preset first temperature threshold, so as to reduce the net output power of the fuel cell and control the start-up of the fuel cell.

[0107] The low-temperature start-up module 503 is used to perform secondary power adjustment on the adjustable load based on the allowable charging power of the power battery, the on / off status of the power battery heater, and the on / off status of the air conditioning heater when the allowable charging power of the power battery is less than the minimum output power of the fuel cell and the temperature of the power battery is less than or equal to a preset second temperature threshold. This reduces the net output power of the fuel cell and simultaneously controls the start-up of the fuel cell. The first temperature threshold is greater than the second temperature threshold. The acquisition module 501, the high-temperature start-up module 502, and the low-temperature start-up module 503 are connected. The fuel cell control system in this embodiment can quickly complete the start-up of the fuel cell, avoid overcharging the power battery, and has high flexibility and feasibility.

[0108] In some embodiments, the acquisition module 501 is specifically used to acquire the allowable charging power of the power battery and the minimum output power of the fuel cell when a preset fuel cell start-up condition is met, and to make a judgment on whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell; the fuel cell start-up condition is: the power battery charge is less than a preset charge threshold, and the fuel cell is in a shutdown state.

[0109] In some embodiments, the system further includes: a room temperature start-up module, configured to send a first start-up command to the fuel cell when the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell, control the fuel cell to start based on the first start-up command, and control the fuel cell to output power at a power within the allowable charging power of the power battery.

[0110] In some embodiments, the high-temperature start-up module 502 is specifically used to determine whether the power battery water-cooling unit is turned on based on the power battery water-cooling unit's start-up status.

[0111] If the power battery water-cooled unit is not turned on, a second judgment is made on whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell. If the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell, a second start-up command is issued to the fuel cell. Based on the second start-up command, the fuel cell is controlled to start and the fuel cell is controlled to output power within the allowable charging power of the power battery. If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, the fuel cell start-up operation is stopped.

[0112] If the power battery water-cooled unit is turned on, the system determines whether the air conditioning compressor is turned on based on its status. If the air conditioning compressor is not turned on, the system performs three checks to determine whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell. If the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell, a third start-up command is sent to the fuel cell. Based on the third start-up command, the fuel cell is started and controlled to output power within the allowable charging power of the power battery. If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, the fuel cell start-up operation is stopped. If the air conditioning compressor is turned on, a fourth start-up command is sent to the fuel cell. Based on the fourth start-up command, the system performs four checks to determine whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell. If the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell, a fifth start-up command is sent to the fuel cell. Based on the fifth start-up command, the fuel cell is started and controlled to output power within the allowable charging power of the power battery. If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, a power adjustment is performed on the preset adjustable load within the fuel cell.

[0113] Specifically, the high-temperature start-up module 502 performs a power adjustment on the preset adjustable load inside the fuel cell, including: if the allowable charging power of the power battery is less than the minimum output power of the fuel cell, then the minimum output power of the fuel cell is subtracted in sequence from the allowable charging power of the power battery, the power of the air conditioning compressor and the power of the power battery water cooling unit to obtain the first target power.

[0114] The power of the adjustable load is adjusted to the first target power to reduce the net output power of the fuel cell while controlling the start-up of the fuel cell; the adjustable load includes a fuel cell heater and a fuel cell fan.

[0115] In some embodiments, the low-temperature start-up module 503 is specifically used to determine whether the power battery heater is turned on based on the power battery heater's on-state.

[0116] If the power battery heater is not turned on, the system checks five times whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell. If the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell, a sixth start-up command is sent to the fuel cell. Based on the sixth start-up command, the system controls the fuel cell to start and output power within the allowable charging power of the power battery. If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, the system stops the fuel cell start-up operation.

[0117] If the power battery heater is on, the system determines whether the air conditioning heater is on based on its status. If the air conditioning heater is not on, the system performs six checks to determine whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell. If the allowable charging power is greater than or equal to the minimum output power of the fuel cell, a seventh start-up command is issued to the fuel cell. Based on this command, the fuel cell is started and controlled to output power within the allowable charging power of the power battery. If the allowable charging power is less than the minimum output power of the fuel cell, the fuel cell start-up operation is stopped. If the air conditioning heater is on, an eighth start-up command is issued to the fuel cell. Based on this command, the system performs seven checks to determine whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell. If the allowable charging power is greater than or equal to the minimum output power of the fuel cell, a ninth start-up command is issued. Based on this command, the fuel cell is started and controlled to output power within the allowable charging power of the power battery. If the allowable charging power is less than the minimum output power of the fuel cell, a second power adjustment is performed on the preset adjustable load within the fuel cell.

[0118] In some embodiments, the low-temperature start-up module 503 performs secondary power adjustment on a preset adjustable load within the fuel cell, including: if the allowable charging power of the power battery is less than the minimum output power of the fuel cell, then subtracting the allowable charging power of the power battery, the power of the air conditioning heater, and the power of the power battery heater from the minimum output power of the fuel cell in sequence to obtain a second target power; adjusting the power of the adjustable load to the second target power to reduce the net output power of the fuel cell, while controlling the start-up of the fuel cell; the adjustable load includes: a fuel cell heater and a fuel cell fan.

[0119] This embodiment also provides a vehicle, including: a housing, a fuel cell and a power battery, wherein the housing is provided with a fuel cell control system for controlling the fuel cell, and the fuel cell control system includes: an acquisition module for acquiring the allowable charging power of the power battery and the minimum output power of the fuel cell;

[0120] The high-temperature start-up module is used to adjust the power of the preset adjustable load in the fuel cell once, based on the allowable charging power of the power battery, the on-state of the power battery water-cooled unit and the on-state of the air conditioning compressor, when the allowable charging power of the power battery is less than the minimum output power of the fuel cell and the temperature of the power battery is greater than or equal to a preset first temperature threshold, so as to reduce the net output power of the fuel cell and control the start-up of the fuel cell.

[0121] The low-temperature start-up module is used to perform secondary power adjustment on the adjustable load based on the allowable charging power of the power battery, the on / off status of the power battery heater, and the on / off status of the air conditioning heater when the allowable charging power of the power battery is less than the minimum output power of the fuel cell, and the temperature of the power battery is less than or equal to a preset second temperature threshold. This reduces the net output power of the fuel cell while controlling the start-up of the fuel cell. The first temperature threshold is greater than the second temperature threshold. The vehicle provided by this invention, due to having the fuel cell control system described above, also possesses the various advantages described above.

[0122] Figure 6 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 6 As shown, the electronic device may include a processor 610, a communication interface 620, a memory 630, and a communication bus 640. The processor 610, communication interface 620, and memory 630 communicate with each other via the communication bus 640. The processor 610 can call logical instructions in the memory 630 to execute a fuel cell control method. This method includes: when a preset fuel cell start-up condition is met, determining whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell; the fuel cell start-up condition is: the power battery charge is less than a preset charge threshold, and the fuel cell is in a powered-off state.

[0123] When the allowable charging power of the power battery is less than the minimum output power of the fuel cell, and the temperature of the power battery is greater than or equal to the preset first temperature threshold, the power battery's allowable charging power, the power battery's water-cooled unit's on status, and the air conditioning compressor's on status are used to adjust the power of the preset adjustable load in the fuel cell to reduce the net output power of the fuel cell and control the fuel cell to start.

[0124] When the allowable charging power of the power battery is less than the minimum output power of the fuel cell, and the temperature of the power battery is less than or equal to a preset second temperature threshold, the adjustable load is adjusted in a secondary power manner based on the allowable charging power of the power battery, the on state of the power battery heater and the on state of the air conditioning heater, so as to reduce the net output power of the fuel cell and control the start-up of the fuel cell.

[0125] Furthermore, the logical instructions in the aforementioned memory 630 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, essentially, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0126] In another aspect, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to perform the fuel cell control methods provided by the methods described above.

[0127] The system or device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0128] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0129] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fuel cell control method, characterized in that, include: Obtain the allowable charging power of the power battery and the minimum output power of the fuel cell; When the allowable charging power of the power battery is less than the minimum output power of the fuel cell, and the temperature of the power battery is greater than or equal to the preset first temperature threshold, the power battery's allowable charging power, the power battery's water-cooled unit's on status, and the air conditioning compressor's on status are used to adjust the power of the preset adjustable load in the fuel cell to reduce the net output power of the fuel cell and control the fuel cell to start. When the allowable charging power of the power battery is less than the minimum output power of the fuel cell, and the temperature of the power battery is less than or equal to a preset second temperature threshold, the adjustable load is adjusted in a secondary power manner based on the allowable charging power of the power battery, the on state of the power battery heater and the on state of the air conditioning heater, so as to reduce the net output power of the fuel cell and control the start-up of the fuel cell; the first temperature threshold is greater than the second temperature threshold. The step of adjusting the power of a preset adjustable load within the fuel cell based on the allowable charging power of the power battery, the on / off status of the power battery water-cooled unit, and the on / off status of the air conditioning compressor includes: Determine whether the power battery water cooling unit is turned on based on its on / off status. If the power battery water-cooled unit is not turned on, a second judgment is made on whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell. If the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell, a second start-up command is issued to the fuel cell. Based on the second start-up command, the fuel cell is controlled to start and the fuel cell is controlled to output power within the allowable charging power of the power battery. If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, the fuel cell start-up operation is stopped. If the power battery water-cooled unit is turned on, the system determines whether the air conditioning compressor is turned on based on its status. If the air conditioning compressor is not turned on, the system performs three checks to determine whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell. If the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell, a third start-up command is sent to the fuel cell. Based on the third start-up command, the system controls the fuel cell to start and output power within the allowable charging power of the power battery. If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, the system stops the fuel cell start-up operation.

2. The fuel cell control method according to claim 1, characterized in that, The steps for obtaining the allowable charging power of the power battery and the minimum output power of the fuel cell include: When the preset fuel cell start-up conditions are met, the allowable charging power of the power battery and the minimum output power of the fuel cell are obtained, and a judgment is made on whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell. The fuel cell start-up conditions are: the power battery charge is less than the preset charge threshold and the fuel cell is in the off state.

3. The fuel cell control method according to claim 1, characterized in that, Also includes: When the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell, a first start-up command is sent to the fuel cell. Based on the first start-up command, the fuel cell is controlled to start and the fuel cell is controlled to output power within the allowable charging power of the power battery.

4. The fuel cell control method according to claim 1, characterized in that, If the air conditioning compressor is turned on, a fourth start-up command is sent to the fuel cell. Based on the fourth start-up command, four checks are performed to determine whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell. If the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell, a fifth start-up command is sent to the fuel cell. Based on the fifth start-up command, the fuel cell is controlled to start and output power at a power level within the allowable charging power of the power battery. If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, a power adjustment is performed on the preset adjustable load within the fuel cell.

5. The fuel cell control method according to claim 4, characterized in that, The step of adjusting the power of the preset adjustable load within the fuel cell if the allowable charging power of the power battery is less than the minimum output power of the fuel cell includes: If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, then the minimum output power of the fuel cell is subtracted in sequence from the allowable charging power of the power battery, the power of the air conditioning compressor, and the power of the power battery water-cooled unit to obtain the first target power. The power of the adjustable load is adjusted to the first target power to reduce the net output power of the fuel cell and simultaneously control the start-up of the fuel cell; the adjustable load includes a fuel cell heater and a fuel cell fan.

6. The fuel cell control method according to claim 1, characterized in that, The step of performing secondary power adjustment on the adjustable load based on the allowable charging power of the power battery, the on / off status of the power battery heater, and the on / off status of the air conditioning heater includes: Based on the stated power battery heater's on / off status, determine whether the power battery heater is on. If the power battery heater is not turned on, the system checks five times whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell. If the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell, a sixth start-up command is sent to the fuel cell. Based on the sixth start-up command, the system controls the fuel cell to start and output power within the allowable charging power of the power battery. If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, the fuel cell start-up operation is stopped. If the power battery heater is turned on, the system determines whether the air conditioning heater is turned on based on its status. If the air conditioning heater is not turned on, the system performs six checks to determine whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell. If the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell, a seventh start-up command is issued to the fuel cell. Based on the seventh start-up command, the system controls the fuel cell to start and output power within the allowable charging power of the power battery. If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, the system stops the fuel cell start-up operation.

7. The fuel cell control method according to claim 6, characterized in that, If the air conditioner heater is turned on, an eighth start-up command is sent to the fuel cell. Based on the eighth start-up command, the system checks seven times whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell. If the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell, a ninth start-up command is sent to the fuel cell. Based on the ninth start-up command, the system controls the fuel cell to start and controls the fuel cell to output power within the allowable charging power of the power battery. If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, a second power adjustment is performed on the preset adjustable load within the fuel cell. If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, the step of performing secondary power adjustment on the preset adjustable load within the fuel cell includes: If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, then the minimum output power of the fuel cell is subtracted in sequence from the allowable charging power of the power battery, the power of the air conditioner heater, and the power of the power battery heater to obtain the second target power. The power of the adjustable load is adjusted to the second target power to reduce the net output power of the fuel cell, while controlling the start-up of the fuel cell; the adjustable load includes a fuel cell heater and a fuel cell fan.

8. A fuel cell control system for executing the fuel cell control method as described in any one of claims 1 to 7, characterized in that, include: The acquisition module is used to acquire the allowable charging power of the power battery and the minimum output power of the fuel cell; The high-temperature start-up module is used to adjust the power of the preset adjustable load in the fuel cell once, based on the allowable charging power of the power battery, the on-state of the power battery water-cooled unit and the on-state of the air conditioning compressor, when the allowable charging power of the power battery is less than the minimum output power of the fuel cell and the temperature of the power battery is greater than or equal to a preset first temperature threshold, so as to reduce the net output power of the fuel cell and control the start-up of the fuel cell. The high-temperature start-up module is also used to determine whether the power battery water-cooling unit is turned on based on the power battery water-cooling unit's start-up status. If the power battery water-cooled unit is not turned on, a second judgment is made on whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell. If the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell, a second start-up command is issued to the fuel cell. Based on the second start-up command, the fuel cell is controlled to start and the fuel cell is controlled to output power within the allowable charging power of the power battery. If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, the fuel cell start-up operation is stopped. If the power battery water-cooled unit is turned on, the system determines whether the air conditioning compressor is turned on based on its status. If the air conditioning compressor is not turned on, the system performs three checks to determine whether the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell. If the allowable charging power of the power battery is greater than or equal to the minimum output power of the fuel cell, a third start-up command is sent to the fuel cell. Based on the third start-up command, the system controls the fuel cell to start and output power within the allowable charging power of the power battery. If the allowable charging power of the power battery is less than the minimum output power of the fuel cell, the fuel cell start-up operation is stopped. The low-temperature start-up module is used to perform secondary power adjustment on the adjustable load based on the allowable charging power of the power battery, the on-state of the power battery heater, and the on-state of the air conditioning heater, when the allowable charging power of the power battery is less than the minimum output power of the fuel cell and the temperature of the power battery is less than or equal to a preset second temperature threshold, so as to reduce the net output power of the fuel cell and control the start-up of the fuel cell; the first temperature threshold is greater than the second temperature threshold.

9. A vehicle, characterized in that, include: The housing, the fuel cell and the power battery, and the fuel cell control system as described in claim 8, wherein the fuel cell control system is disposed within the housing and is used to control the operation of the fuel cell.

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