Vehicle power-on control method, device, vehicle and medium

Abstract

The present application discloses a vehicle power-on control method, device, vehicle and medium, which relates to the field of vehicle control technology. The method is applied to a fuel cell vehicle, which includes a fuel cell and a power battery; the method includes: in response to triggering a power-on operation, detecting the insulation state of the fuel cell and the insulation state of the power battery; if there is an insulation fault in the fuel cell, obtaining the first conductivity of the cooling circuit of the fuel cell; if the first conductivity is greater than or equal to a preset conductivity threshold, and there is no insulation fault in the power battery, controlling the fuel cell vehicle to power on through the power battery. In this way, the method can solve the problem that a fuel cell vehicle cannot be powered on due to an insulation fault in the fuel cell.

Description

Technical Field

[0001] The present application relates to the field of vehicle control technology, and in particular to a vehicle power-on control method, device, vehicle and medium. Background Art

[0002] As global resources become increasingly scarce and environmental pollution becomes increasingly serious, environmental protection has become a focus of attention in various industries, and the automotive industry is no exception. Hydrogen-fueled batteries have received widespread attention as a clean, efficient, and pollution-free electrochemical power generation device. At the same time, hydrogen fuel cell vehicles have become the mainstream of the current automotive industry development.

[0003] When the fuel cell system of a hydrogen fuel cell vehicle is operating normally, a deionizer is installed in the cooling circuit of the fuel cell. The deionizer is used to adsorb ions in the coolant to reduce the conductivity of the cooling circuit, thereby ensuring the insulation performance of the fuel cell system.

[0004] However, the coolant in the cooling circuit flows driven by a high-pressure water pump. After the vehicle is powered off, the high-pressure water pump will stop working, and the deionizer will not be able to fully absorb the ions in the coolant, thereby weakening the insulation performance of the fuel cell system. For example, after a hydrogen fuel cell vehicle is powered off, as time goes by, the ions released from the components of the cooling circuit will gradually increase, causing the local conductivity of the cooling circuit to be high. At this time, the insulation test of the fuel cell system cannot pass, which in turn causes the vehicle to be unable to power on, affecting the user's use of the vehicle. Summary of the invention

[0005] The present application provides a vehicle power-on control method, device, vehicle and medium, which can solve the problem that a fuel cell vehicle cannot be powered on due to an insulation failure of the fuel cell.

[0006] In a first aspect, the present application provides a vehicle power-on control method, which is applied to a fuel cell vehicle, wherein the fuel cell vehicle includes a fuel cell and a power battery; the method includes:

[0007] In response to triggering a power-on operation, detecting an insulation state of the fuel cell and an insulation state of the power battery;

[0008] If the fuel cell has an insulation fault, obtaining a first conductivity of a cooling circuit of the fuel cell;

[0009] If the first conductivity is greater than or equal to a preset conductivity threshold and there is no insulation fault in the power battery, the fuel cell vehicle is powered on by controlling the power battery.

[0010] Optionally, the method further includes:

[0011] After a preset time has passed since the fuel cell vehicle was powered on, obtaining a second conductivity of the cooling circuit;

[0012] If the second conductivity is less than the preset conductivity threshold, the insulation fault of the fuel cell is eliminated.

[0013] Optionally, the method further includes:

[0014] Obtaining the power of the power battery;

[0015] If the power level of the power battery is lower than a preset power threshold, the fuel cell is controlled to operate.

[0016] Optionally, the method further includes:

[0017] If the second conductivity is greater than or equal to the preset conductivity threshold, the user is prompted that the fuel cell has an insulation fault.

[0018] Optionally, the method further includes:

[0019] If the first conductivity is less than the preset conductivity threshold, the user is prompted that the fuel cell has an insulation fault.

[0020] Optionally, the method further includes:

[0021] The fuel cell vehicle is controlled to be powered off.

[0022] Optionally, the method further includes:

[0023] If there is no insulation failure in the fuel cell, the fuel cell vehicle is powered on by controlling the fuel cell or the power battery.

[0024] In a second aspect, the present application provides a vehicle power-on control device, comprising:

[0025] a detection unit, configured to detect the insulation state of the fuel cell and the insulation state of the power battery in response to triggering the power-on operation;

[0026] an acquisition unit, configured to acquire a first conductivity of a cooling circuit of the fuel cell if an insulation fault occurs in the fuel cell;

[0027] A control unit is used to control the fuel cell vehicle to be powered on through the power battery if the first conductivity is greater than or equal to a preset conductivity threshold and there is no insulation fault in the power battery.

[0028] Optionally, the acquisition unit is further used to acquire the second conductivity of the cooling circuit after a preset time has passed since the fuel cell vehicle was powered on;

[0029] The control unit is further configured to eliminate the insulation fault of the fuel cell if the second conductivity is less than the preset conductivity threshold.

[0030] Optionally, the control unit is further used to control the fuel cell vehicle to power on through the fuel cell or the power battery if there is no insulation failure in the fuel cell.

[0031] Optionally, the acquisition unit is further used to acquire the power of the power battery;

[0032] The control unit is further configured to control the operation of the fuel cell if the power level of the power battery is lower than a preset power threshold.

[0033] Optionally, the control unit is further configured to prompt a user that an insulation fault exists in the fuel cell if the second conductivity is greater than or equal to the preset conductivity threshold.

[0034] Optionally, the control unit is further configured to prompt a user that an insulation fault exists in the fuel cell if the first conductivity is less than the preset conductivity threshold.

[0035] Optionally, the control unit is also used to control the fuel cell vehicle to power off.

[0036] In a third aspect, the present application provides a fuel cell vehicle, including a fuel cell, a fuel cell control unit FCU, a power battery and a central computing unit CCU;

[0037] The CCU is used to detect the insulation state of the power battery in response to triggering the power-on operation, and send an insulation detection instruction to the FCU;

[0038] The FCU is configured to detect the insulation state of the fuel cell based on the insulation detection instruction, and if the fuel cell has an insulation fault, obtain a first conductivity of a cooling circuit of the fuel cell; if the first conductivity is greater than or equal to a preset conductivity threshold, send an indication that the fuel cell has an insulation fault to the CCU;

[0039] The CCU is further configured to control the fuel cell vehicle to be powered on through the power battery according to an indication that the fuel cell has an insulation fault if the power battery has no insulation fault.

[0040] In a fourth aspect, the present application provides a computer storage medium having codes stored therein. When the codes are executed, a device executing the codes implements the vehicle power-on control method described in any one of the aforementioned first aspects.

[0041] As can be seen from the above technical solution, the present application provides a vehicle power-on control method, which is applied to a fuel cell vehicle, which includes a fuel cell and a power battery. Specifically, the method includes: in response to triggering a power-on operation, detecting the insulation state of the fuel cell and the insulation state of the power battery, if there is an insulation fault in the fuel cell, obtaining the first conductivity of the cooling circuit of the fuel cell, and if the first conductivity is greater than or equal to the preset conductivity threshold and there is no insulation fault in the power battery, controlling the fuel cell vehicle to power on through the power battery. In this method, after detecting that there is an insulation fault in the fuel cell, the vehicle is first started by the power battery without the intervention of the fuel cell. Therefore, even if there is an insulation fault in the fuel cell, the fuel cell vehicle can be powered on and started, thereby improving the vehicle experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in this embodiment or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0043] Figure 1 A flow chart of a vehicle power-on control method provided in an embodiment of the present application;

[0044] Figure 2 A schematic diagram of a fuel cell vehicle provided in an embodiment of the present application;

[0045] Figure 3 A schematic diagram of a power-on interaction provided in an embodiment of the present application;

[0046] Figure 4 A schematic diagram of a vehicle power-on control device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0047] The terms "first", "second", "third", etc. in the specification, claims and drawings of this application are used to distinguish different objects rather than to limit a specific order.

[0048] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0049] In order to make the description of the following embodiments clear and concise, a brief introduction to the related technology is first given:

[0050] A fuel cell vehicle is a vehicle that uses electricity generated by an onboard fuel cell device to drive the vehicle. The power system of a fuel cell vehicle is mainly composed of a fuel cell engine, a fuel storage device (mainly used for hydrogen storage), a drive motor and a power battery pack. It uses fuel cell power generation as the main energy source and drives the vehicle forward through the motor. A fuel cell is a device that uses hydrogen and oxygen (or air) to directly generate electricity through an electrochemical reaction under the action of a catalyst.

[0051] The main responsibility of the Central Computing Unit (CCU) is to centrally process the functions of various domains such as assisted driving, power, chassis, body, air conditioning, body status, and mode management. Generally, the CCU integrates ECU, power supply, controller, input / output and other related software algorithms.

[0052] The Fuel Control Unit (FCU) is a key component of the fuel cell vehicle drive system and is responsible for the overall process control of the entire fuel cell system. This process includes: supervision of hydrogen and air processing, heat and water management, energy conversion, and meeting all safety and security requirements, such as detecting the insulation status of the fuel cell to determine whether there is an insulation fault in the fuel cell. To ensure that these load and thermal requirements are continuously met, data exchange between the fuel cell control unit and the central computing unit is required.

[0053] At present, when the fuel cell system is operating normally, a deionizer is installed in the cooling circuit of the fuel cell. The deionizer is used to adsorb ions in the flowing coolant to reduce the conductivity of the cooling circuit, thereby ensuring the insulation performance of the fuel cell system. However, the flow of the coolant needs to be driven by a high-pressure water pump. After the vehicle is powered off, the high-pressure water pump will stop working.

[0054] After a fuel cell vehicle has been parked for a long time, the ions released from the components of the cooling circuit will gradually increase, causing the local conductivity of the cooling circuit to be high. At this time, the FCU will detect the insulation status of the fuel cell and determine that there is an insulation failure in the fuel cell, which will cause the vehicle to be unable to power on.

[0055] It can be seen that the current power-on logic of fuel cell vehicles has drawbacks. If the vehicle cannot be powered on, it cannot provide power to the high-pressure water pump, and cannot drive the coolant to flow, and thus cannot reduce the conductivity of the cooling circuit, causing the vehicle power-on process to fall into a "dead loop", that is, the vehicle cannot be powered on.

[0056] In view of this, an embodiment of the present application provides a vehicle power-on control method, which can be applied to fuel cell vehicles. Specifically, the method includes: in response to triggering a power-on operation, detecting the insulation state of the fuel cell, if there is an insulation fault in the fuel cell, obtaining a first conductivity of the cooling circuit of the fuel cell, and if the first conductivity is greater than or equal to a preset conductivity threshold, controlling the fuel cell vehicle to power on through the power battery.

[0057] In this method, after detecting an insulation fault in the fuel cell, the vehicle is started by the power battery first without the fuel cell. Therefore, even if there is an insulation fault in the fuel cell, the fuel cell vehicle can be powered on. It can be seen that after changing the power-on logic of the fuel cell vehicle, the fuel cell vehicle can be powered on even if there is an insulation fault in the fuel cell, which solves the "dead loop" problem and improves the vehicle experience.

[0058] In order to make the technical solution of the present application clearer and easier to understand, the vehicle power-on control method provided in the embodiment of the present application is introduced from the perspective of a fuel cell vehicle.

[0059] See also Figure 1 , which is a flow chart of a vehicle power-on control method provided by an embodiment of the present application, including:

[0060] S101 . In response to a triggered power-on operation, the fuel cell vehicle detects an insulation state of a fuel cell and an insulation state of a power battery.

[0061] The power-on operation refers to the operation of triggering the whole vehicle to power on. In some examples, the vehicle has a one-button start function, and the user can trigger the power-on operation through the one-button start button inside the vehicle. In other examples, the user can also trigger the power-on operation through the one-button start button on the remote control key, for example, the user can long press the one-button start button in the remote control key to trigger the power-on operation. In other examples, the fuel cell vehicle can communicate with a mobile terminal (such as a mobile phone), and the user can control the one-button start of the fuel cell vehicle based on the APP installed on the mobile phone to trigger the power-on operation.

[0062] The insulation state of a fuel cell refers to whether there is leakage in the fuel cell. In some embodiments, a current sensor may be installed on the outside of the fuel cell. The current sensor may transmit the collected data to the FCU. The FCU determines the insulation state of the fuel cell based on the data collected by the current sensor. The insulation state of the fuel cell may include a normal state and an insulation failure. The normal state means that there is no leakage in the fuel cell, and the fuel cell vehicle can directly control the fuel cell to intervene during the startup process; an insulation failure means that there is leakage in the fuel cell, and the fuel cell vehicle cannot directly control the fuel cell to intervene directly, otherwise there will be a risk of electric shock.

[0063] Correspondingly, the insulation state of the power battery refers to whether the power battery has leakage. In some embodiments, a current sensor may be installed on the outside of the power battery, and the current sensor may transmit the collected data to the CCU. The CCU determines the insulation state of the power battery based on the data collected by the current sensor. Among them, the insulation state of the power battery may include a normal state and an insulation fault. The normal state means that the power battery has no leakage; the insulation fault means that the power battery has leakage. The fuel cell vehicle cannot start the vehicle directly through the power battery, otherwise there will be a risk of electric shock.

[0064] S102. The fuel cell vehicle determines whether there is an insulation fault in the fuel cell. If so, S103 is executed; if not, S111 is executed.

[0065] In some embodiments, if the fuel cell vehicle detects the insulation state of the fuel cell and determines that the fuel cell has an insulation fault, S103 is executed; otherwise, S111 is executed.

[0066] S103: The fuel cell vehicle obtains a first conductivity of a cooling circuit of the fuel cell.

[0067] The cooling circuit of the fuel cell is arranged around or near the fuel cell, and is used to cool the fuel cell by circulating the coolant in the cooling circuit through a high-pressure water pump. Generally, a deionizer is arranged in the cooling circuit of the fuel cell. When the high-pressure water pump circulates the coolant in the cooling circuit, the deionizer can absorb ions in the coolant, thereby reducing the conductivity of the cooling circuit.

[0068] In the embodiment of the present application, a sensor (for example, a current sensor) may be arranged near or around the cooling circuit of the fuel cell to detect the conductivity of the cooling circuit, which is recorded as the first conductivity. For example, the sensor may transmit the collected data to the FCU, and the FCU may process the collected data to obtain the first conductivity, so as to subsequently determine whether there is leakage in the cooling circuit based on the first conductivity.

[0069] S104, the fuel cell vehicle determines whether the first conductivity is less than a preset conductivity threshold, if not, executes S105, and if so, executes S109.

[0070] The preset conductivity threshold is a pre-set conductivity threshold. When the conductivity of the cooling circuit is greater than or equal to the preset conductivity threshold, it indicates that there is leakage in the cooling circuit; if the conductivity of the cooling circuit is less than the preset conductivity threshold, it indicates that there is no leakage in the cooling circuit.

[0071] When the fuel cell vehicle determines that the first conductivity is greater than or equal to the preset conductivity threshold, it executes S105 , otherwise it executes S109 .

[0072] S105: If there is no insulation fault in the power battery, the fuel cell vehicle controls the fuel cell vehicle to be powered on through the power battery.

[0073] In the case of an insulation fault in the cooling circuit of the fuel cell, which may be caused by the excessively high conductivity of the cooling circuit, and the power battery does not have an insulation fault, the fuel cell vehicle can control the power-on of the fuel cell vehicle through the power battery. In this way, this method changes the original power-on logic of the fuel cell vehicle, and even if there is an insulation fault in the fuel cell, the vehicle can also be powered on by the power battery, thereby solving the "dead loop" problem and improving the user experience.

[0074] S106 . After the fuel cell vehicle is powered on for a preset period of time, the fuel cell vehicle obtains a second conductivity of the cooling circuit.

[0075] The preset duration can be a pre-set duration, for example, it can be 5 minutes or 10 minutes. In some examples, the preset duration can be set based on the time required for the high-pressure water pump to drive the coolant in the cooling circuit to circulate a cycle, for example, it can be 5 times the cycle, etc.

[0076] After the fuel cell vehicle is powered on for a predetermined period of time, the deionizer has completed the adsorption of ions in the coolant in the cooling circuit, and then the fuel cell vehicle obtains the second conductivity of the cooling circuit. The specific method for the fuel cell vehicle to obtain the second conductivity of the cooling circuit can be referred to the above embodiment, which will not be repeated here.

[0077] S107, the fuel cell vehicle determines whether the second conductivity is less than a preset conductivity threshold, if so, executes S108, if not, executes S109.

[0078] When the fuel cell vehicle determines that the second conductivity is less than the preset conductivity threshold, S108 is executed, otherwise S109 is executed.

[0079] S108. The fuel cell vehicle eliminates insulation failure of the fuel cell.

[0080] When the second conductivity of the cooling circuit is less than the preset conductivity threshold, after the fuel cell vehicle is powered on by the power battery, the high-pressure water pump drives the coolant in the cooling circuit, and most of the ions in the coolant are adsorbed by the deionizer, thereby reducing the conductivity of the cooling circuit. In other words, the reason why the first conductivity is higher than the preset conductivity threshold is that the fuel cell vehicle has not been powered on for a long time (or has been parked for a long time).

[0081] After the fuel cell vehicle is powered on by the power battery, the high-water pump can operate normally, thereby reducing the conductivity of the fuel cell cooling circuit, that is, the insulation failure of the fuel cell can be eliminated.

[0082] S109. The fuel cell vehicle prompts the user that there is an insulation fault in the fuel cell.

[0083] When the second conductivity of the cooling circuit is greater than or equal to the preset conductivity threshold, it indicates that there is still leakage after the fuel cell vehicle is powered on by the power battery. Even after the high-pressure water pump drives the coolant in the cooling circuit, most of the ions in the coolant are adsorbed by the deionizer, thereby reducing the conductivity of the cooling circuit. In other words, the reason why the first conductivity is higher than the preset conductivity threshold is not that the fuel cell vehicle has not been powered on for a long time (or parked for a long time), that is, there is an insulation failure in the fuel cell caused by other reasons.

[0084] In some examples, a display device may be provided inside the fuel cell vehicle, such as a vehicle instrument (IP, Instrument Panel). The fuel cell vehicle may display an indicator light indicating an insulation fault in the fuel cell through the instrument, or may prompt the user through voice to indicate an insulation fault in the fuel cell.

[0085] S110, the fuel cell vehicle is powered off.

[0086] After a fuel cell vehicle determines that its fuel cell has an insulation fault, the vehicle is powered off to avoid dangerous situations such as electric shock caused by the insulation fault of the fuel cell.

[0087] S111. The fuel cell vehicle is powered on by controlling the fuel cell vehicle through the fuel cell or the power battery.

[0088] After the fuel cell vehicle determines that there is no insulation fault in its fuel cell, it can control the vehicle to power on through the fuel cell or the power battery. At this time, since there is no fault in the fuel cell, the vehicle can be directly powered on through the fuel cell, and of course, the vehicle can also be powered on through the power battery. It can also be understood that when the fuel cell vehicle determines that there is no fault in its fuel cell, the vehicle is powered on normally.

[0089] S112. The fuel cell vehicle obtains power from the power battery.

[0090] After the fuel cell vehicle is powered on, the fuel cell vehicle can obtain electricity from the power battery.

[0091] S113. The fuel cell vehicle determines whether the power level of the power battery is lower than a preset power level threshold. If so, execute S114; if not, execute S115.

[0092] The preset power threshold may be a pre-set power value. When the power of the power battery is lower than the preset power threshold, it indicates that the power of the power battery is low and the fuel cell needs to intervene to charge the power battery.

[0093] In some embodiments, the user can customize the preset power threshold. For example, when the user needs the power battery to maintain a higher power level, the preset power threshold can be set higher (for example, 70%); when the user needs the power battery to maintain a lower power level, the preset power threshold can be set lower (20%). Of course, in order for the power battery to be able to drive the vehicle normally, the minimum value of the preset power threshold can be forcibly set to 15%, that is, the user can only adjust the preset power threshold between 15%-100%.

[0094] It should be noted that the above setting of the preset power threshold is only an exemplary introduction, and those skilled in the art can set it to other values ​​based on actual needs.

[0095] S114. The fuel cell vehicle controls the operation of the fuel cell.

[0096] When the power of the power battery is lower than the preset power threshold, it indicates that the power of the power battery is low or lower than the value set by the user. At this time, the fuel cell vehicle controls the fuel cell to work, that is, the fuel cell intervenes to charge the power battery. In other embodiments, the fuel cell can also directly drive the fuel cell vehicle to travel, and provide excess energy to the power battery to charge the power battery, thereby reducing energy loss and improving energy recovery rate.

[0097] S115. The fuel cell vehicle controls the fuel cell without intervention.

[0098] When the power level of the power battery is greater than or equal to the preset power threshold, it indicates that the power level of the power battery is not low or higher than the value set by the user. At this time, the fuel cell vehicle can control the fuel cell not to intervene, and the vehicle is driven only by the power battery.

[0099] It should be noted that in some examples, when a fuel cell vehicle requires greater power, even if the power of the power battery is greater than or equal to a preset power threshold, the fuel cell and the power battery can simultaneously power the drive motor to provide a stronger driving force for the vehicle.

[0100] Based on the above description, an embodiment of the present application provides a vehicle power-on control method, which is applied to a fuel cell vehicle, which includes a fuel cell and a power battery. Specifically, the method includes: in response to triggering a power-on operation, detecting the insulation state of the fuel cell, if there is an insulation fault in the fuel cell, obtaining the first conductivity of the cooling circuit of the fuel cell, and if the first conductivity is greater than or equal to a preset conductivity threshold, controlling the fuel cell vehicle to power on through the power battery. In this method, after detecting that there is an insulation fault in the fuel cell, the vehicle is first started through the power battery without the intervention of the fuel cell. Therefore, even if there is an insulation fault in the fuel cell, the fuel cell vehicle can be powered on and started, improving the vehicle experience.

[0101] The present application also provides a fuel cell vehicle, such as Figure 2 As shown, this figure is a schematic diagram of a fuel cell vehicle provided in an embodiment of the present application, and the fuel cell vehicle includes: a fuel cell 201, an FCU 202, a power battery 203, a CCU 204 and a drive motor 205.

[0102] It should be noted that Figure 2 The fuel cell vehicle shown is merely a schematic diagram. In other embodiments, the fuel cell vehicle may include more or fewer components, for example, a drive shaft, a fuel storage device, etc.

[0103] The power-on logic of this fuel cell vehicle is different from that of a traditional vehicle. For ease of understanding, the following is an introduction with reference to the accompanying drawings. Figure 3 As shown, this figure is a schematic diagram of a power-on interaction provided by an embodiment of the present application. The interaction process includes:

[0104] S301. The CCU 204 obtains a power-on operation.

[0105] S302 . The CCU 204 sends an insulation detection instruction to the FCU 202 based on the power-on operation.

[0106] S303: The FCU 202 detects the insulation state of the fuel cell based on the insulation detection instruction.

[0107] S304 , the FCU 202 determines whether there is an insulation fault in the fuel cell, and if so, executes S305 ; if not, executes S319 .

[0108] S305 . The FCU 202 obtains a first conductivity of a cooling circuit of the fuel cell.

[0109] S306 , the FCU 202 determines whether the first conductivity is less than a preset conductivity threshold; if not, execute S307 ; if yes, execute S317 .

[0110] S307 . The FCU 202 sends an indication to the CCU 204 that there is an insulation fault in the fuel cell.

[0111] S308 . The CCU 204 detects the insulation status of the power battery.

[0112] S309 , the CCU 204 determines whether there is an insulation fault in the power battery; if so, execute S310 , if not, execute S311 .

[0113] It should be noted that the present application does not specifically limit the execution order between the above S303-S306 and S308-S309, and the two groups of steps can be executed simultaneously or one after another.

[0114] S310. CCU 204 reports to the IP that there is an insulation fault in the power battery.

[0115] In some embodiments, after the CCU 204 reports to the IP that there is an insulation fault in the power battery, the CUU 204 may not execute S311.

[0116] S311 . The CCU 204 obtains a third conductivity of the cooling circuit according to an indication that the fuel cell has an insulation fault.

[0117] S312, the CCU 204 determines whether the third conductivity is less than a preset conductivity threshold; if not, execute S313; if yes, execute S317.

[0118] In some embodiments, after CCU 204 receives the identification of fuel cell insulation failure sent by FCU 202, CCU 204 can reconfirm whether the conductivity of the fuel cell cooling circuit is higher than a preset power threshold, thereby avoiding false detection caused by incorrect data transmitted by FCU 202.

[0119] S313 . The CCU 204 controls the fuel cell vehicle to be powered on through the power battery.

[0120] S314 . After the fuel cell vehicle is powered on for a preset period of time, the CCU 204 obtains a second conductivity of the cooling circuit.

[0121] S315 , the CCU 204 determines whether the second conductivity is less than a preset conductivity threshold; if so, execute S316 ; if not, execute S317 .

[0122] S316 . The CCU 204 eliminates the insulation fault of the fuel cell.

[0123] S317. CCU 204 reports to the IP that there is an insulation fault in the fuel cell.

[0124] S318 . The CCU 204 controls the fuel cell vehicle to power off.

[0125] It should be noted that the embodiments of the present application do not specifically limit the execution order of the above S317 and S318. In some embodiments, S318 can be executed first and then S317, or they can be executed simultaneously.

[0126] S319: If there is no insulation fault in the power battery, the CCU 204 controls the fuel cell vehicle to power on normally.

[0127] S320. The CCU 204 obtains the power of the power battery.

[0128] S321 , the CCU 204 determines whether the power level of the power battery is lower than a preset power level threshold, if so, executes S322 , if not, executes S323 .

[0129] S322. The CCU 204 controls the operation of the fuel cell.

[0130] S323: The CCU 204 controls the fuel cell to not intervene.

[0131] The above interaction process between the CCU 204 and the FCU 202 is only a schematic introduction. The specific implementation of each step can be found in the above method embodiment, which will not be repeated here.

[0132] Correspondingly, after detecting an insulation fault in the fuel cell, the fuel cell vehicle first starts the vehicle through the power battery without allowing the fuel cell to intervene. Therefore, even in the event of an insulation fault in the fuel cell, the fuel cell vehicle can still be powered on and started, thereby improving the vehicle experience.

[0133] The present application also provides a vehicle power-on control device, such as Figure 4 As shown in FIG. 4 , this figure is a schematic diagram of a vehicle power-on control device provided in an embodiment of the present application. The device includes: a detection unit 401 , an acquisition unit 402 and a control unit 403 .

[0134] The detection unit 401 is used to detect the insulation state of the fuel cell and the insulation state of the power battery in response to triggering the power-on operation;

[0135] An acquisition unit 402 is used to acquire a first conductivity of a cooling circuit of the fuel cell if an insulation fault occurs in the fuel cell;

[0136] The control unit 403 is configured to control the fuel cell vehicle to be powered on through the power battery if the first conductivity is greater than or equal to a preset conductivity threshold and there is no insulation fault in the power battery.

[0137] Optionally, the acquisition unit 402 is further configured to acquire a second conductivity of the cooling circuit after a preset time has passed since the fuel cell vehicle was powered on;

[0138] The control unit 403 is further configured to eliminate the insulation fault of the fuel cell if the second conductivity is less than the preset conductivity threshold.

[0139] Optionally, the control unit 403 is further used to control the fuel cell vehicle to be powered on through the fuel cell or the power battery if there is no insulation failure in the fuel cell.

[0140] Optionally, the acquisition unit 402 is further used to acquire the power of the power battery;

[0141] The control unit 403 is further configured to control the fuel cell to operate if the power level of the power battery is lower than a preset power threshold.

[0142] Optionally, the control unit 403 is further configured to prompt a user that an insulation fault exists in the fuel cell if the second conductivity is greater than or equal to the preset conductivity threshold.

[0143] Optionally, the control unit 403 is further configured to prompt a user that an insulation fault exists in the fuel cell if the first conductivity is less than the preset conductivity threshold.

[0144] Optionally, the control unit 403 is also used to control the fuel cell vehicle to power off.

[0145] An embodiment of the present application further provides a computer storage medium, in which codes are stored. When the codes are executed, a device executing the codes implements the vehicle power-on control method described in any one of the first aspects above.

[0146] Through the description of the above implementation methods, it can be known that those skilled in the art can clearly understand that all or part of the steps in the above-mentioned embodiment method can be implemented by means of software plus a general hardware platform. Based on such an understanding, the technical solution of the present application can be embodied in the form of a software product, which can be stored in a storage medium, such as a read-only memory (ROM) / RAM, a magnetic disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network communication device such as a router) to execute the methods described in each embodiment of the present application or some parts of the embodiments.

[0147] Each embodiment in this specification is described in a progressive manner, and the same and similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment. Some or all of the modules can be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative work.

[0148] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0149] It should also be noted that the various embodiments in this specification are described in a progressive manner, and the same and similar parts between the various embodiments can refer to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the vehicle and device embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can refer to the partial description of the method embodiments. The equipment and device embodiments described above are merely schematic, in which the units described as separate components may or may not be physically separated, and the components indicated as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without creative work.

[0150] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A vehicle power-on control method, characterized in that: Applied to a fuel cell vehicle, the fuel cell vehicle comprises a fuel cell and a power battery; the method comprises: In response to triggering a power-on operation, detecting an insulation state of the fuel cell and an insulation state of the power battery; If the fuel cell has an insulation fault, obtaining a first conductivity of a cooling circuit of the fuel cell; If the first conductivity is greater than or equal to a preset conductivity threshold and there is no insulation fault in the power battery, controlling the fuel cell vehicle to be powered on by the power battery; After a preset time has passed since the fuel cell vehicle was powered on, obtaining a second conductivity of the cooling circuit; If the second conductivity is less than the preset conductivity threshold, the insulation fault of the fuel cell is eliminated.

2. The method according to claim 1, characterized in that The method further comprises: If there is no insulation failure in the fuel cell, the fuel cell vehicle is powered on by controlling the fuel cell or the power battery.

3. The method according to any one of claims 1 to 2, characterized in that: The method further comprises: Obtaining the power of the power battery; If the power level of the power battery is lower than a preset power threshold, the fuel cell is controlled to operate.

4. The method according to claim 1, characterized in that The method further comprises: If the second conductivity is greater than or equal to the preset conductivity threshold, the user is prompted that the fuel cell has an insulation fault.

5. The method according to claim 1, characterized in that The method further comprises: If the first conductivity is less than the preset conductivity threshold, the user is prompted that the fuel cell has an insulation fault.

6. The method according to claim 4 or 5, characterized in that: The method further comprises: The fuel cell vehicle is controlled to be powered off.

7. A fuel cell vehicle, characterized in that: include: Fuel cell, fuel cell control unit FCU, power battery and central computing unit CCU; The CCU is used to detect the insulation state of the power battery in response to triggering the power-on operation, and send an insulation detection instruction to the FCU; The FCU is configured to detect the insulation state of the fuel cell based on the insulation detection instruction, and if the fuel cell has an insulation fault, obtain a first conductivity of a cooling circuit of the fuel cell; if the first conductivity is greater than or equal to a preset conductivity threshold, send an indication that the fuel cell has an insulation fault to the CCU; The CCU is further configured to control the fuel cell vehicle to be powered on through the power battery according to an indication that the fuel cell has an insulation fault if the power battery has no insulation fault; After the fuel cell vehicle is powered on for a preset period of time, the CCU obtains a second conductivity of the cooling circuit; if the second conductivity is less than the preset conductivity threshold, the insulation fault of the fuel cell is eliminated.

8. A vehicle power-on control device, characterized in that: include: A detection unit, for detecting the insulation state of the fuel cell and the insulation state of the power battery in response to triggering the power-on operation; an acquisition unit, configured to acquire a first conductivity of a cooling circuit of the fuel cell if an insulation fault occurs in the fuel cell; a control unit, configured to control the fuel cell vehicle to be powered on through the power battery if the first conductivity is greater than or equal to a preset conductivity threshold and there is no insulation fault in the power battery; The acquisition unit is also used to acquire a second conductivity of the cooling circuit after a preset time has passed since the fuel cell vehicle was powered on; if the second conductivity is less than the preset conductivity threshold, the insulation fault of the fuel cell is eliminated.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

Images