Hydrogen fuel cell activation method and energy recovery device for vehicle commissioning
By using energy recovery devices and automation procedures to perform multi-stage activation during the vehicle debugging of hydrogen fuel cells, the problems of low activation efficiency and poor economicality of hydrogen fuel cell stacks in the prior art are solved, and an efficient and economical activation process is achieved.
Patent Information
- Application Number
- CN202411952901.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-04-08
AI Technical Summary
Before the existing hydrogen fuel cells are put into operation in the market, the stack performance needs to be further activated, and during the debugging and activation process, it is susceptible to interference from human factors and the SOC status of the vehicle battery, resulting in low activation efficiency, high time cost and poor economicality.
A hydrogen fuel cell activation method for vehicle debugging is provided. By connecting the energy recovery device, the battery of the debugging vehicle and the hydrogen fuel cell to be activated, the SOC threshold is set, and the upper computer automation program is used to perform multi-stage activation. The energy recovery device judges and controls the energy recovery process through the acquisition module, the judgment module and the control module.
It reduces the interference of human factors and the impact of SOC status of the vehicle battery, improves activation efficiency, reduces time costs, improves economy, and avoids waste of resources caused by running power consumption and air conditioning power consumption.
Smart Images
Figure CN119786655A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of hydrogen fuel cell activation, and in particular to a hydrogen fuel cell activation method for whole vehicle debugging and an energy recovery device thereof. Background Art
[0002] Hydrogen fuel cell technology is widely used in transportation, fixed power supply, portable power supply and handheld electronic devices due to its advantages of low operating temperature, high power density, fast start-up speed, low noise and zero pollution. The transportation industry is currently the field with the most hydrogen fuel cells. Hydrogen fuel cells are usually tested offline before leaving the factory, including stack activation performance and other processes. However, when hydrogen fuel cells are circulated on the market, they are parked for a long time and not in operation, so the stack performance needs to be further activated before they are put into market operation. In addition, during the debugging and activation period, the SOC of the whole vehicle battery is usually reduced by running power consumption or air conditioning power consumption.
[0003] At present, after hydrogen fuel cells are installed on vehicles, vehicle manufacturers generally require the whole vehicle to debug the stack activation performance. On site, the host computer is often used to manually pull the stack for activation. At this time, the number of activations is also limited by the vehicle battery SOC. When using this method to activate the hydrogen fuel cell stack, it is easily affected by human factors and the pure electric state of the vehicle. In the process of adjusting the vehicle battery SOC to normal power, it is necessary to manually force the battery to consume power and the air conditioner to consume power, which is easy to cause a waste of resources. Therefore, it will also lead to low overall activation efficiency, high time cost, and poor economy. Summary of the invention
[0004] The purpose of the present invention is to provide a hydrogen fuel cell activation method and an energy recovery device for vehicle debugging, reduce human interference and the influence of vehicle battery SOC state, improve activation efficiency, reduce time cost, and improve economy.
[0005] In order to achieve the above object, the present invention provides a hydrogen fuel cell activation method for vehicle commissioning, comprising the following steps:
[0006] Connecting an energy recovery device, a battery of a debugging vehicle and a hydrogen fuel cell to be activated, and setting a SOC threshold of the energy recovery device;
[0007] The hydrogen fuel cell is connected to a host computer and performs a self-test;
[0008] Opening the debugging automatic activation program of the host computer to start activating the hydrogen fuel cell;
[0009] During the activation process, the acquisition module in the energy recovery device acquires the state of the energy recovery device itself and the SOC state of the battery of the debugging vehicle, and compares the state with the SOC threshold to determine the working state of the energy recovery device;
[0010] Performing multi-stage activation, and collecting the battery SOC state of the debugged vehicle during each activation process and comparing it with the SOC threshold to determine the working state of the energy recovery device;
[0011] End activation and shut down the hydrogen fuel cell and energy recovery device.
[0012] Compared with the prior art, the hydrogen fuel cell activation method for whole vehicle debugging in the embodiment of the present invention has the beneficial effects of: activating the hydrogen fuel cell through the upper computer automation program, reducing the influence of debugging personnel's misoperation or subjective factors, and the excess electricity generated during the activation process can be recovered by the energy recovery device. Before recovery, the energy recovery device will determine whether to perform energy recovery by judging the current vehicle battery SOC state and the SOC state of its own energy storage battery. When the energy recovery device is turned on, it will store the excess electricity generated by the fuel cell system in its own energy storage battery. The energy recovery device is used to recover excess electricity to avoid resource waste caused by running power consumption, air conditioning power consumption, etc., reduce interference from human factors and the influence of the SOC state of the whole vehicle battery, thereby improving activation efficiency, reducing time costs, and improving economy.
[0013] The energy recovery device for vehicle debugging of the embodiment of the present invention comprises an acquisition module, a judgment module and a control module. The acquisition module is used to acquire the energy storage battery status of the energy recovery device and the battery SOC status of the debugging vehicle. The judgment module is used to compare the battery SOC of the debugging vehicle with the SOC threshold, and compare the energy storage battery SOC of the energy recovery device with the SOC threshold. The control module is connected with a first DC / DC relay and a second DC / DC relay to control the start and stop of the energy recovery device.
[0014] In the energy recovery device for whole vehicle debugging of an embodiment of the present invention, the SOC threshold includes a first SOC threshold and a second SOC threshold, and the judgment module compares the battery SOC of the debugging vehicle with the first SOC threshold, and compares the energy storage battery SOC of the energy recovery device with the second SOC threshold.
[0015] In the energy recovery device for vehicle debugging of the embodiment of the present invention, during the activation process, the energy recovery device first determines whether the battery SOC of the debugging vehicle is greater than the first SOC threshold value set. If the battery SOC of the debugging vehicle is less than the first SOC threshold value, the energy recovery device is in a standby state and does not perform energy recovery work, and the electricity generated by the hydrogen fuel cell system is charged into the battery of the debugging vehicle;
[0016] If the battery SOC of the debugged vehicle is greater than the first SOC threshold and the power of the energy storage battery of the energy recovery device is less than the set second SOC threshold, the energy recovery device is in a working state, and the excess power generated by the hydrogen fuel cell system is recovered into the energy storage battery of the energy recovery device;
[0017] If the power of the energy storage battery of the energy recovery device is greater than the set second SOC threshold, the host computer is requested to shut down the hydrogen fuel cell, and the energy recovery device is in a dormant state after shutdown.
[0018] In the energy recovery device for vehicle debugging according to the embodiment of the present invention, the control module is connected to a first DC / DC relay and a second DC / DC relay.
[0019] When the first DC / DC relay is closed and the second DC / DC relay is open, it indicates that the energy recovery mode is turned on and the energy recovery device is in working state;
[0020] When the second DC / DC relay is closed and the first DC / DC relay is open, it indicates that the energy recovery mode is closed and the energy recovery device is in a standby state;
[0021] If both the first DC / DC relay and the second DC / DC relay are disconnected, it indicates that the energy recovery mode is turned off and the energy recovery device is in a dormant state.
[0022] In the hydrogen fuel cell activation method for whole vehicle debugging of the embodiment of the present invention, during the activation process, the host computer loads the fuel cell system with multiple currents of different sections according to the set power section to activate the stack, collects and compares the values after loading, measures the voltages of multiple current points, calculates the difference between the average single-chip voltage at each current point and the reference average single-chip voltage value, and uses the difference to judge the activation status.
[0023] In the hydrogen fuel cell activation method for vehicle debugging according to the embodiment of the present invention, the multiple sections of different current loading include:
[0024] When the system input current is below 220A, each current point runs at the first set time;
[0025] When the system input current exceeds 220A, each current point runs for the set second time.
[0026] The hydrogen fuel cell activation method for vehicle debugging of the embodiment of the present invention, the numerical value collection and comparison of each stage of activation includes real-time detection of the voltage difference between the average single-chip voltage corresponding to each current point and the reference average single-chip voltage. If the voltage difference is less than the set voltage difference, it can enter the next set current point for activation. If the voltage difference is less than the set voltage difference, it will wait for the running time of this current point to exceed the set first time or second time, and then automatically enter the next set current point for activation until the load is pulled to the highest current point. After the highest current point exceeds the set second time, the load is reduced to the idle current point for operation.
[0027] The hydrogen fuel cell activation method for vehicle debugging of the embodiment of the present invention completes the activation of this stage when the difference between the average single-chip voltage at each current point and the reference average single-chip voltage value is less than the set voltage difference; if there is a current point where the difference between the average single-chip voltage and the reference average single-chip voltage value is greater than the set voltage difference, the activation of this stage is restarted.
[0028] The present invention also provides an energy recovery device for activating a hydrogen fuel cell for whole vehicle debugging, which is used in the hydrogen fuel cell activation method for whole vehicle debugging as described in any of the above embodiments, including an acquisition module, a judgment module and a control module, the acquisition module is connected to the energy storage battery of the energy recovery device and the battery of the debugging vehicle, and the control module is connected to a first DC / DC relay and a second DC / DC relay to control the start and stop of the energy recovery device.
[0029] Compared with the prior art, the energy recovery device for activating a hydrogen fuel cell for whole vehicle debugging in an embodiment of the present invention has the beneficial effect that the excess electricity generated during the activation process can be recovered by the energy recovery device. Before recovery, the energy recovery device obtains the current vehicle battery SOC status and the SOC status of its own energy storage battery through an acquisition module, and then determines whether to perform energy recovery through a judgment module. The control module determines whether to turn on the energy recovery device according to the judgment result of the judgment module. When the energy recovery device is turned on, the excess electricity generated by the fuel cell system during the activation process is stored in its own energy storage battery. The energy recovery device is used to recover the excess electricity to avoid waste of resources caused by running power consumption, air conditioning power consumption, etc., reduce interference from human factors and the influence of the SOC status of the whole vehicle battery, thereby improving activation efficiency, reducing time costs, and improving economy.
[0030] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] Figure 1 It is a schematic flow chart of a hydrogen fuel cell activation method for vehicle debugging and energy recovery thereof according to an embodiment of the present invention;
[0032] Figure 2 is a schematic structural diagram of an energy recovery device for vehicle debugging according to an embodiment of the present invention; DETAILED DESCRIPTION
[0033] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0034] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0035] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0036] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.
[0037] like Figure 1 As shown, a hydrogen fuel cell activation method for vehicle debugging according to a preferred embodiment of the present invention comprises the following steps:
[0038] S1: Connect the energy recovery device, debug the vehicle battery and the hydrogen fuel cell to be activated, and set the SOC threshold of the energy recovery device;
[0039] S2: The hydrogen fuel cell is connected to the host computer and performs self-test;
[0040] S3: Open the automatic activation program for debugging of the host computer and start activating the hydrogen fuel cell;
[0041] S4: During the activation process, the acquisition module in the energy recovery device acquires the state of the energy recovery device itself and the SOC state of the battery of the debugging vehicle, and compares the state with the SOC threshold to determine the working state of the energy recovery device;
[0042] S5: Perform multi-stage activation, and collect the battery SOC status of the debugged vehicle during each activation process and compare it with the SOC threshold to determine the working status of the energy recovery device;
[0043] S6: End activation and shut down the hydrogen fuel cell and energy recovery device.
[0044] The hydrogen fuel cell activation method for whole vehicle debugging of the present application activates the hydrogen fuel cell through a host computer, thereby reducing the influence of misoperation or subjective factors of the debugging personnel. The excess electricity generated during the activation process can be recovered through an energy recovery device. Before recovery, the energy recovery device will determine whether to perform energy recovery by judging the current vehicle battery SOC status and the SOC status of its own energy storage battery. When the energy recovery device is turned on, it will store the excess electricity generated by the fuel cell system in its own energy storage battery. The energy recovery device is used to recover excess electricity to avoid waste of resources caused by running power consumption, air conditioning power consumption, etc., reduce interference from human factors and the influence of the SOC status of the whole vehicle battery, thereby improving activation efficiency, reducing time costs, and improving economy.
[0045] In some embodiments of the present invention, the energy recovery device includes an acquisition module, a judgment module and a control module. The acquisition module is used to acquire the energy storage battery status of the energy recovery device and the battery SOC status of the debugging vehicle. The judgment module is used to compare the battery SOC of the debugging vehicle with the SOC threshold, and compare the energy storage battery SOC of the energy recovery device with the SOC threshold. The control module is used to control the start and stop of the energy recovery device. Through the acquisition module, the judgment module and the control module, the energy storage status of the energy recovery device and the energy storage status of the battery of the whole vehicle are judged, and the judgment result is used to determine whether the energy recovery device is turned on.
[0046] In some embodiments of the present invention, in S2, after the hydrogen fuel cell is connected to the host computer through the external CAN line, the whole vehicle is powered on with high voltage, and the program automatically detects whether there is a fault in the hydrogen fuel cell system. If there is no fault, the system is in a standby state waiting to start. If there is a fault, the system is in a fault state and cannot start. After the detection is completed, the whole vehicle turns on the EV switch by default (that is, the hybrid switch is closed) to prevent the whole vehicle from sending the required power to affect the host computer's required power size request control threshold.
[0047] In some embodiments of the present invention, in S4, the SOC threshold includes a first SOC threshold and a second SOC threshold. The judgment module compares the battery SOC of the debugging vehicle with the first SOC threshold, and compares the energy storage battery SOC of the energy recovery device with the second SOC threshold. It can be understood that the first SOC threshold and the second SOC threshold are adjusted according to different vehicle models or different battery capacities to meet the activation test standard. Setting a reasonable first SOC threshold and a second SOC threshold can make the working range of the energy recovery device more accurate, which is conducive to improving the efficiency of the energy recovery device and the activation process.
[0048] In some embodiments of the present invention, during the activation process of S4 and S5, the energy recovery device first determines whether the battery SOC of the debugging vehicle is greater than a set first SOC threshold. If the battery SOC of the debugging vehicle is less than the first SOC threshold, the energy recovery device is in a standby state and does not perform energy recovery work. The electricity generated by the hydrogen fuel cell system is charged into the battery of the debugging vehicle.
[0049] If the battery SOC of the debugged vehicle is greater than the first SOC threshold and the power of the energy recovery device energy storage battery is less than the set second SOC threshold, the energy recovery device is in working state, and the excess power generated by the hydrogen fuel cell system is recovered into the energy storage battery of the energy recovery device;
[0050] If the power of the energy storage battery of the energy recovery device is greater than the set second SOC threshold, the host computer is requested to shut down the hydrogen fuel cell, and the energy recovery device is in a dormant state after shutdown.
[0051] By comparing the SOC of the energy storage battery and the vehicle battery with the first SOC threshold and the second SOC threshold, the working state of the energy recovery device is adjusted to complete the recovery of excess electricity.
[0052] In some embodiments of the present invention, the control module is connected to a first DC / DC relay and a second DC / DC relay.
[0053] When the first DC / DC relay is closed and the second DC / DC relay is open, it indicates that the energy recovery mode is turned on and the energy recovery device is in working state;
[0054] When the second DC / DC relay is closed and the first DC / DC relay is disconnected, it means that the energy recovery mode is turned off and the energy recovery device is in standby mode;
[0055] If the first DC / DC relay and the second DC / DC relay are both disconnected, it means that the energy recovery mode is turned off and the energy recovery device is in a dormant state.
[0056] The control module controls the energy recovery device through the first DC / DC relay and the second DC / DC relay, so that the start and stop timing of the energy recovery device is more accurate and the excess electricity can be accurately recovered.
[0057] In some embodiments of the present invention, during the activation process, the host computer loads the fuel cell system with multiple different currents according to the set power range to activate the fuel cell stack, and after loading, numerical data are collected and compared, the voltages of multiple current points are measured, and the difference between the average single-chip voltage at each current point and the reference average single-chip voltage value is calculated, and the activation status is judged by the difference. The host computer accurately controls the loading current and time, which reduces the influence of debugging personnel's misoperation or other subjective factors, and improves the activation efficiency and accuracy.
[0058] In some embodiments of the present invention, the multiple sections of different current loading include:
[0059] When the system input current is below 220A, each current point runs at the first set time;
[0060] When the system input current exceeds 220A, each current point runs for the set second time;
[0061] The first time is 1 minute, the second time is 3 minutes, and after each current point runs for more than the first time or the second time, the next current point will automatically run.
[0062] In some embodiments of the present invention, the value collection and comparison of each stage of activation includes real-time detection of the voltage difference between the average single-chip voltage corresponding to each current point and the reference average single-chip voltage. If the voltage difference of the current point at this time is less than the set voltage difference, it can enter the next set current point for activation. If the voltage difference of the current point at this time is greater than the set voltage difference, it will wait for the running time of this current point to exceed the set first time or second time, and then automatically enter the next set current point for activation until the load is pulled to the highest current point. After the highest current point exceeds the set second time, the load is reduced to the idle current point for operation. The load current and time are accurately controlled by the host computer, and the size of the difference is judged by the computer, which reduces the influence of the commissioning personnel's misoperation or other subjective factors, and improves the activation efficiency and accuracy.
[0063] In some embodiments of the present invention, when the difference between the average single-chip voltage at each current point and the reference average single-chip voltage value is less than the set voltage difference, the activation of this stage is completed; if there is a current point where the difference between the average single-chip voltage and the reference average single-chip voltage value is greater than the set voltage difference, the activation of this stage is restarted.
[0064] Specifically, after completing the previous stage activation, the second stage activation is repeated. The hydrogen fuel cell system is activated no more than twice without shutting down. If the performance of the hydrogen fuel cell system has not met the requirements after two consecutive activations, the program sends a shutdown command to wait for the system to be in standby mode. After the standby time exceeds the set third time (for example, 5 minutes), the program automatically starts and performs the above-mentioned activation process until the program determines that the activation is completed and the host computer executes a shutdown operation on the hydrogen fuel cell system.
[0065] In the best embodiment of the present application, the following steps are included:
[0066] S01: Connect the energy recovery device, debug the vehicle's battery and the hydrogen fuel cell to be activated, connect the energy recovery system to the DCF of the fuel-electric system through the matching high-voltage wiring harness, and then connect it to the vehicle's all-in-one high-voltage wiring harness. At the same time, connect the necessary communication wiring harness to detect the device's own status and external communication, and set the SOC threshold of the energy recovery device;
[0067] S02: After the hydrogen fuel cell is connected to the host computer through the external CAN line, the vehicle is powered on and high voltage is applied. The program automatically detects whether there is a fault in the hydrogen fuel cell system. If there is no fault, the system is in a standby state waiting to start. If there is a fault, the system is in a fault state and cannot start. After the detection is completed, the vehicle turns on the EV switch by default (that is, the hybrid switch is turned off) to prevent the vehicle from sending the required power to affect the host computer's required power size request control threshold;
[0068] S03: Open the debugging automatic activation program of the host computer and start to activate the hydrogen fuel cell. The host computer loads the fuel cell system with multiple currents according to the set power range to activate the stack. After loading, the host computer collects and compares the values, measures the voltages at multiple current points, calculates the difference between the average single-chip voltage at each current point and the reference average single-chip voltage value, and uses the difference to judge the activation status;
[0069] S04: The energy recovery device first determines whether the battery SOC of the debugging vehicle is greater than a set first SOC threshold. If the battery SOC of the debugging vehicle is less than the first SOC threshold, the energy recovery device is in a standby state and does not perform energy recovery. The electricity generated by the hydrogen fuel cell system is charged into the battery of the debugging vehicle.
[0070] If the battery SOC of the debugged vehicle is greater than the first SOC threshold and the power of the energy recovery device energy storage battery is less than the set second SOC threshold, the energy recovery device is in working state, and the excess power generated by the hydrogen fuel cell system is recovered into the energy storage battery of the energy recovery device;
[0071] If the energy storage battery power of the energy recovery device is greater than the set second SOC threshold, the host computer is requested to shut down the hydrogen fuel cell, and the energy recovery device is in a dormant state after shutdown;
[0072] S05: The value collection and comparison of activation at each stage includes real-time detection of the voltage difference between the average single-chip voltage corresponding to each current point and the reference average single-chip voltage. If the voltage difference of the current point at this time is less than the set voltage difference, it can enter the next set current point for activation in advance. If the voltage difference of the current point at this time is greater than the set voltage difference, it will wait for the running time of this current point to exceed the set first time or second time, and then automatically enter the next set current point for activation until the load is pulled to the highest current point. After the highest current point exceeds the set second time, the load is reduced to the idle current point for operation;
[0073] When the difference between the average single chip voltage at each current point and the reference average single chip voltage value is less than the set voltage difference, the activation of this stage is completed; if the difference between the average single chip voltage at any current point and the reference average single chip voltage value is greater than the set voltage difference, the activation of this stage is restarted;
[0074] S06: The hydrogen fuel cell system is activated no more than twice without shutting down. If the performance of the hydrogen fuel cell system has not reached the requirements after two consecutive activations, the program sends a shutdown command to wait for the system to be in standby mode. After the standby time exceeds the set third time (for example, 5 minutes), the program automatically starts and performs the above-mentioned activation process until the program determines that the activation is completed and the host computer executes the shutdown operation on the hydrogen fuel cell system.
[0075] like Figure 2 As shown, the present invention also provides an energy recovery device for activating a hydrogen fuel cell for whole vehicle debugging, which is used in the hydrogen fuel cell activation method for whole vehicle debugging of any of the above embodiments, including an acquisition module, a judgment module and a control module, the acquisition module is connected to the energy storage battery of the energy recovery device and the battery of the debugging vehicle, and the control module is connected to the first DC / DC relay and the second DC / DC relay to control the start and stop of the energy recovery device.
[0076] Specifically, the energy recovery device includes a low-voltage 24V power supply, a DC / DC for step-down, a display screen, a controller module (acquisition module, judgment module, control module), a built-in energy storage battery, a high-voltage output reserved interface, an internal high-voltage wiring harness, a first DC / DC relay and a second DC / DC relay. It is connected to the DCF of the fuel-electric system through a matching high-voltage wiring harness, and then connected to the multi-in-one high-voltage wiring harness of the whole vehicle. At the same time, it is connected to the necessary communication wiring harness or wireless module to detect the status of the device itself and external communication.
[0077] Compared with the prior art, the energy recovery device for activating a hydrogen fuel cell for whole vehicle debugging in an embodiment of the present invention has the beneficial effect that the excess electricity generated during the activation process can be recovered by the energy recovery device. Before recovery, the energy recovery device obtains the current vehicle battery SOC status and the SOC status of its own energy storage battery through an acquisition module, and then determines whether to perform energy recovery through a judgment module. The control module determines whether to turn on the energy recovery device according to the judgment result of the judgment module. When the energy recovery device is turned on, the excess electricity generated by the fuel cell system during the activation process is stored in its own energy storage battery. The energy recovery device is used to recover the excess electricity to avoid waste of resources caused by running power consumption, air conditioning power consumption, etc., reduce interference from human factors and the influence of the SOC status of the whole vehicle battery, thereby improving activation efficiency, reducing time costs, and improving economy.
[0078] In summary, the embodiments of the present invention provide a hydrogen fuel cell activation method and an energy recovery device for whole vehicle debugging, which reduces interference from human factors and the influence of the SOC state of the whole vehicle battery, improves activation efficiency, reduces time cost, and improves overall economy.
[0079] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.
Claims
1. A hydrogen fuel cell activation method for vehicle commissioning, characterized in that: The following steps are involved: Connecting an energy recovery device, a battery of a debugging vehicle and a hydrogen fuel cell to be activated, and setting a SOC threshold of the energy recovery device; The hydrogen fuel cell is connected to a host computer and performs a self-test; Opening the debugging automatic activation program of the host computer to start activating the hydrogen fuel cell; During the activation process, the acquisition module in the energy recovery device acquires the state of the energy recovery device itself and the SOC state of the battery of the debugging vehicle, and compares the state with the SOC threshold to determine the working state of the energy recovery device; Performing multi-stage activation, and collecting the battery SOC state of the debugged vehicle during each activation process and comparing it with the SOC threshold to determine the working state of the energy recovery device; End activation and shut down the hydrogen fuel cell and energy recovery device.
2. The hydrogen fuel cell activation method for vehicle commissioning according to claim 1, characterized in that: The energy recovery device includes an acquisition module, a judgment module and a control module. The acquisition module is used to obtain the energy storage battery status of the energy recovery device and the battery SOC status of the debugging vehicle. The judgment module is used to compare the battery SOC of the debugging vehicle with the SOC threshold, and compare the energy storage battery SOC of the energy recovery device with the SOC threshold. The control module is used to control the start and stop of the energy recovery device.
3. The hydrogen fuel cell activation method for vehicle commissioning according to claim 2, characterized in that: The SOC threshold includes a first SOC threshold and a second SOC threshold. The judgment module compares the battery SOC of the debugging vehicle with the first SOC threshold, and compares the energy storage battery SOC of the energy recovery device with the second SOC threshold.
4. The hydrogen fuel cell activation method for vehicle commissioning according to claim 3, characterized in that: During the activation process, the energy recovery device first determines whether the battery SOC of the debugging vehicle is greater than the first SOC threshold. If the battery SOC of the debugging vehicle is less than the first SOC threshold, the energy recovery device is in a standby state and does not perform energy recovery. The electricity generated by the hydrogen fuel cell system is charged into the battery of the debugging vehicle. If the battery SOC of the debugged vehicle is greater than the first SOC threshold and the power of the energy storage battery of the energy recovery device is less than the set second SOC threshold, the energy recovery device is in a working state, and the excess power generated by the hydrogen fuel cell system is recovered into the energy storage battery of the energy recovery device; If the power of the energy storage battery of the energy recovery device is greater than the set second SOC threshold, the host computer is requested to shut down the hydrogen fuel cell, and the energy recovery device is in a dormant state after shutdown.
5. The hydrogen fuel cell activation method for vehicle commissioning according to claim 2, characterized in that: The control module is connected to a first DC / DC relay and a second DC / DC relay, When the first DC / DC relay is closed and the second DC / DC relay is open, it indicates that the energy recovery mode is turned on and the energy recovery device is in working state; When the second DC / DC relay is closed and the first DC / DC relay is open, it indicates that the energy recovery mode is closed and the energy recovery device is in a standby state; If both the first DC / DC relay and the second DC / DC relay are disconnected, it indicates that the energy recovery mode is turned off and the energy recovery device is in a dormant state.
6. The hydrogen fuel cell activation method for vehicle commissioning according to claim 2, characterized in that: During the activation process, the host computer loads the fuel cell system with multiple currents of different stages according to the set power range to activate the fuel cell stack, collects and compares numerical values after loading, measures the voltages of multiple current points, calculates the difference between the average single-chip voltage at each current point and the reference average single-chip voltage value, and uses the difference to judge the activation status.
7. The hydrogen fuel cell activation method for vehicle commissioning according to claim 6, characterized in that: The multiple sections of different current loading include: When the system input current is below 220A, each current point runs at the first set time; When the system input current exceeds 220A, each current point runs for the set second time.
8. The hydrogen fuel cell activation method for vehicle commissioning according to claim 7, characterized in that: The numerical collection and comparison of activation at each stage includes real-time detection of the voltage difference between the average single-chip voltage corresponding to each current point and the reference average single-chip voltage. If the voltage difference is less than the set voltage difference, the next set current point can be entered for activation. If the voltage difference is greater than the set voltage difference, the next set current point will be automatically entered for activation after waiting for the operating time of this current point to exceed the set first time or second time, until the load is pulled to the highest current point. After the highest current point exceeds the set second time, the load is reduced to the idle current point for operation.
9. The hydrogen fuel cell activation method for vehicle commissioning according to claim 6, characterized in that: When the difference between the average single-chip voltage at each current point and the reference average single-chip voltage value is less than the set voltage difference, the activation of this stage is completed; If the difference between the average single chip voltage at the current point and the reference average single chip voltage value is greater than the set voltage difference, the activation of this stage is restarted.
10. An energy recovery device for activating a hydrogen fuel cell for vehicle commissioning, used in the method for activating a hydrogen fuel cell for vehicle commissioning according to any one of claims 1 to 9, characterized in that: It includes an acquisition module, a judgment module and a control module. The acquisition module is connected to the energy storage battery of the energy recovery device and the battery of the debugging vehicle. The control module is connected to the first DC / DC relay and the second DC / DC relay to control the start and stop of the energy recovery device.