Bandage type fuel cell failure recovery method, device and equipment and storage medium
By locating the failure target, adjusting the torque of the fastening bolts, applying vibration and pulsed hydrogen purging, the failure problem of the strapped fuel cell was solved, and the performance of the fuel cell was restored and its lifespan was extended.
Patent Information
- Application Number
- CN202511034503.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-25
- Publication Date
- 2025-11-04
AI Technical Summary
Band-mounted fuel cells are prone to failure during use, and existing technologies struggle to effectively restore their performance.
By locating the failure target point, adjusting the torque of the fastening bolts, applying vibration force using a vibration generator, and combining pulsed hydrogen purging, the oxide layer and carbon deposits are removed, and the fuel cell contact interface is restored.
It effectively eliminates plastic deformation, breaks up the oxide layer, removes liquid water and carbon deposits, restores the highly active surface state of the fuel cell, and achieves stable and efficient recovery of the failed area.
Smart Images
Figure CN120895685A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of fuel cells, in particular to a binding belt type fuel cell failure recovery method, device, equipment and storage medium. BACKGROUND
[0002] Due to the advantages of uniform pressure distribution, reduction of end plate deformation, mechanical fatigue resistance and the like, the steel band binding technology has a wide application prospect in the fields of fuel cell vehicles, fixed power generation systems and the like, bringing great convenience to people's daily production and life. However, the binding belt type fuel cell is prone to failure during operation with the increase of use time, and it is necessary to consider how to recover from failure. SUMMARY
[0003] The present application provides a binding belt type fuel cell failure recovery method, device, equipment and storage medium, which can realize the failure recovery of the binding belt type fuel cell.
[0004] In a first aspect, the embodiments of the present application provide a binding belt type fuel cell failure recovery method, comprising: locating a failure target point of the binding belt type fuel cell; determining a binding belt corresponding to the failure target point and a fastening bolt fixing the binding belt; controlling a torque wrench to adjust a torque of the fastening bolt to a first threshold value; after a first time length, controlling a vibration generating device to vibrate to apply a first vibration force to the torque wrench, and maintaining for a second time length, wherein the vibration generating device is connected to the torque wrench; controlling the vibration generating device to stop vibrating; after a third time length, controlling a pulse hydrogen purging device to perform pulse hydrogen purging on the failure target point.
[0005] In combination with the first aspect, in an implementation manner, locating a failure target point of the binding belt type fuel cell comprises: obtaining a contact resistance value of a binding belt contact area of the binding belt type fuel cell and a temperature of the binding belt contact area when the binding belt type fuel cell operates at a rated current density; marking the binding belt contact area with a temperature greater than a temperature threshold value and / or a contact resistance value greater than a contact resistance threshold value as a failure target point.
[0006] In combination with the first aspect, in an implementation manner, the first threshold value is higher than an initial torque of the fastening bolt.
[0007] In combination with the first aspect, in an implementation manner, after the third time length, controlling the pulse hydrogen purging device to perform pulse hydrogen purging on the failure target point comprises: after a third time duration, detecting whether the contact resistance value of the failed target point decreases by more than or equal to a second threshold value; If the contact resistance value of the failed target point decreases by more than or equal to the second threshold value, controlling the pulsed hydrogen blowing device to perform pulsed hydrogen blowing on the failed target point.
[0008] In combination with the first aspect, in an implementation, after detecting whether the contact resistance value of the failed target point decreases by more than or equal to the second threshold value, further comprising: If the contact resistance value of the failed target point decreases by less than the second threshold value, controlling the vibration generating device to vibrate to apply a second vibration force to the torque wrench until the contact resistance value of the failed target point decreases by more than or equal to the second threshold value, wherein the second vibration force is greater than the first vibration force.
[0009] In combination with the first aspect, in an implementation, controlling the pulsed hydrogen blowing device to perform pulsed hydrogen blowing on the failed target point comprises: controlling the pulsed hydrogen blowing device to introduce a humidity-saturated hydrogen pulse from the band-type fuel cell anode inlet; controlling the pulsed hydrogen blowing device to stop blowing when the gas pressure loss of the band-type fuel cell anode inlet and outlet is continuously less than a third threshold value.
[0010] In combination with the first aspect, in an implementation, after controlling the pulsed hydrogen blowing device to perform pulsed hydrogen blowing on the failed target point, further comprising: obtaining a current density recovery rate when the band-type fuel cell operates at a rated voltage; If the current density recovery rate is less than a lower limit value of a preset recovery rate interval, performing ozone cleaning on the band-type fuel cell until the current density recovery rate is in the preset recovery rate interval; If the current density recovery rate is in the preset recovery rate interval, controlling the pulsed hydrogen blowing device to introduce a humidity-saturated hydrogen pulse from the band-type fuel cell anode inlet until the current density recovery rate is greater than an upper limit value of the preset recovery rate interval.
[0011] In a second aspect, an embodiment of the present application provides a band-type fuel cell failure recovery device, comprising: a positioning module configured to position a failed target point of a band-type fuel cell; a determination module configured to determine a band corresponding to the failed target point and a fastening bolt fixing the band; an adjustment module configured to control a torque wrench to adjust a torque of the fastening bolt to a first threshold value; The vibration module is configured to control the vibration of the vibration generating device to apply a first vibration force to the torque wrench for a first time period, and maintain the vibration for a second time period, wherein the vibration generating device is connected to the torque wrench. The stop module is configured to control the vibration generating device to stop vibrating. The purge module is configured to control the pulse hydrogen purging device to perform pulse hydrogen purging on the failed target point for a third time period.
[0012] In a third aspect, an embodiment of the present application provides a bandage type fuel cell durability recovery device, which comprises a processor, a memory, and a bandage type fuel cell durability recovery program stored in the memory and executable by the processor, wherein the bandage type fuel cell durability recovery program, when executed by the processor, implements the steps of the bandage type fuel cell failure recovery method according to the first aspect.
[0013] In a fourth aspect, an embodiment of the present application provides a computer readable storage medium, which stores a bandage type fuel cell durability recovery program, wherein the bandage type fuel cell durability recovery program, when executed by a processor, implements the steps of the bandage type fuel cell failure recovery method according to the first aspect.
[0014] The technical scheme provided by the embodiments of the present application has the following beneficial effects: In the embodiments of the present application, the torque wrench is controlled to adjust the torque of the fastening bolt to a first threshold value, and after a first time period, the plastic deformation of the failed area of the bandage type fuel cell can be eliminated; the vibration generating device is controlled to vibrate to apply a first vibration force to the torque wrench for a second time period, which can break the oxide layer of the failed area of the bandage type fuel cell, wherein the vibration generating device is connected to the torque wrench; the vibration generating device is controlled to stop vibrating; after a third time period, the interface of the failed area of the bandage type fuel cell can be stabilized; pulse hydrogen purging is performed on the failed target point, which can efficiently remove liquid water and carbon deposits in the flow channel, avoid damage to the diffusion layer structure, and make the failed area of the bandage type fuel cell reach a high-activity surface state. After the above method is used, the bandage type fuel cell failure can be effectively recovered. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 The flowchart of an embodiment of the bandage type fuel cell failure recovery method of the present application is shown in FIG. 1; Figure 2 The flowchart of an embodiment of the bandage type fuel cell failure recovery method of the present application is shown in FIG. 1; Figure 1 The detailed flowchart of step S60 in the embodiment of the bandage type fuel cell failure recovery method of the present application is shown in FIG. 2; Figure 3 The flowchart of an embodiment of the bandage type fuel cell failure recovery method of the present application is shown in FIG. 1; Figure 1 The flowchart of an embodiment of the bandage type fuel cell failure recovery method of the present application is shown in FIG. 1; Figure 4 The functional module schematic diagram of an embodiment of the binding type fuel cell failure recovery device of the present application; Figure 5 The hardware structure schematic diagram of the binding type fuel cell failure recovery device involved in the embodiment of the present application. DETAILED DESCRIPTION
[0016] In order to enable personnel in the technical field to better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.
[0017] First, some technical terms in the present application are explained and described in order to facilitate the understanding of the present application by those skilled in the art.
[0018] The fuel cell stack is composed of multiple single cells stacked together, and each single cell includes a membrane electrode assembly and a bipolar plate. In order to ensure the stability and performance of the stack, uniform pressure needs to be applied to the stack.
[0019] The binding type combustion cell adopts a steel band binding technology, which tightly binds the stack together outside the stack by using a steel band.
[0020] The binding type combustion cell can achieve uniform pressure distribution: by optimizing the binding force of the steel band, it ensures that each part of the stack is uniformly stressed, reduces local stress concentration, and prolongs the service life of the stack; the high strength and high rigidity of the steel band can effectively inhibit the deformation of the end plate, maintain the structural integrity of the stack; it can improve the fatigue resistance of the stack and reduce mechanical fatigue caused by repeated start and stop.
[0021] In order to make the purpose, technical scheme and advantages of the present application more clear, the embodiments of the present application will be described in further detail below in conjunction with the drawings.
[0022] In a first aspect, the embodiments of the present application provide an intelligent ventilation method for a vehicle.
[0023] In the embodiments, with reference to Figure 1 , Figure 1 The flowchart of an embodiment of the binding type fuel cell failure recovery method of the present application is shown in FIG. 8. As shown in FIG. 8, a binding type fuel cell failure recovery method includes: Figure 1 Step S10, positioning the failure target point of the binding type fuel cell; In this embodiment, as the length of time of using the bandage fuel cell increases, the contact interface between the fuel cell and the bandage will cause the contact resistance to increase due to oxidation reaction, and the bandage fuel cell will cause contact failure due to the pollution covering the surface of the cell and other reasons. The area where the bandage fuel cell surface causes contact failure is the failure target point. The image recognition method can be used to find the area where the pollution covers or the discoloration area caused by oxidation reaction, that is, to locate the failure target point of the bandage fuel cell.
[0024] Further, in an embodiment, the locating the failure target point of the bandage fuel cell comprises: obtaining the contact resistance value of the bandage contact area of the bandage fuel cell and the temperature of the bandage contact area of the bandage fuel cell when the bandage fuel cell is operated at the rated current density; marking the bandage contact area with a temperature greater than the temperature threshold value and / or a contact resistance value greater than the contact resistance threshold value as the failure target point.
[0025] In this embodiment, obtaining the contact resistance value of the bandage contact area of the bandage fuel cell comprises: ensuring that the circuit is in a power-off state, placing the resistance meter on a stable workbench, checking the connection state of the power supply line and the probe, and ensuring that there is no looseness or damage. Using the probe of the resistance meter, connect the probe to the two ends of the resistance to be measured in the bandage contact area, ensure firm connection, and avoid additional contact resistance. Select the resistance measurement mode of the resistance meter and adjust additional parameters such as calibration to meet actual needs. Apply voltage and measure the current through the resistance, observe the readings on the instrument or digital display screen, collect the contact resistance values of each bandage area at a sampling rate of 10Hz, and record the results.
[0026] After the measurement is completed, disconnect the probe of the resistance meter from the measured resistance, turn off the power of the resistance meter, save the battery life and ensure the safety of the equipment.
[0027] Obtaining the temperature of the bandage contact area of the bandage fuel cell when the bandage fuel cell is operated at the rated current density comprises: operating the bandage fuel cell at the rated current density of 0.6A / cm²; turning on the infrared thermal imager, entering the main interface, aiming the infrared thermal imager at the bandage contact area of the bandage fuel cell, observing the thermal image through the screen, rotating the lens adjustment ring to obtain a clear image, pressing the shooting key to save the thermal image, collecting the infrared thermal image with a spatial resolution of 1mm² / pixel, and using functions such as temperature difference analysis and isotherm display to assist in judging abnormal heat sources. Transfer the image to the computer through the data line or wireless way. Turn off the equipment after use, clean the infrared thermal imager lens and store it properly.
[0028] The binding contact area with temperature greater than 80℃ and / or contact resistance greater than 150% of the rated resistance value is marked as a failure target, and the infrared thermal imaging and contact resistance dual-mode detection have a positioning accuracy of ±1.5mm, which can accurately identify the contact failure target and realize targeted positioning.
[0029] Step S20, determining the binding belt corresponding to the failure target and fixing the fastening bolt of the binding belt; In this embodiment, after determining the failure target, all binding belts binding the failure target are found and marked, and all fastening bolts fixing the binding belts are found and marked; Step S30, controlling the torque wrench to adjust the torque of the fastening bolt to a first threshold value; Further, in an embodiment, the control of the torque wrench to adjust the torque of the fastening bolt to a first threshold value comprises: The first threshold value is higher than the initial torque of the fastening bolt.
[0030] In this embodiment, the initial torque of the fastening bolt is the tightening torque, which generates sufficient pre-tightening force to firmly fix the binding belt so that it does not fall off, and the clamping force generated by the fastening bolt is uniform. The torque of the fastening bolt is adjusted by the torque wrench, and the adjusted torque of the fastening bolt is set to 125% of the initial torque.
[0031] Pull down the locking ring of the torque wrench handle, rotate the torque wrench handle, adjust to the set torque value, then release the locking ring to lock the torque wrench, and put the torque wrench sleeve on the fastening bolt and rotate clockwise to apply torque. When applying force, ensure that the perpendicularity deviation of the torque wrench handle to the force application direction is not more than 10 degrees and the horizontal deviation is not more than 3 degrees. When the torque wrench emits a "click" sound, it indicates that the set torque has been reached, and the force application is immediately stopped.
[0032] Step S40, after a first time period, controlling a vibration generating device to vibrate to apply a first vibration force to the torque wrench, and maintaining for a second time period, wherein the vibration generating device is connected to the torque wrench; In this embodiment, after 30 seconds, the plastic deformation of the binding type combustion battery failure target can be effectively eliminated; the vibration generating device can simulate a vibration environment and output a periodic vibration signal. The power of the vibration generating device is turned on, the vibration generating device is controlled to vibrate at a frequency of 5Hz to apply a first vibration force to the torque wrench, and maintained for 2 minutes, which can effectively break the oxide layer of the binding type combustion battery failure target, wherein the vibration generating device is connected to the torque wrench.
[0033] Step S50, controlling the vibration generating device to stop vibrating; In this embodiment, the power of the vibration generating device is turned off to stop the vibration of the vibration generating device. Step S60, after a third time duration, control the pulsed hydrogen purging device to perform pulsed hydrogen purging on the failed target point.
[0034] In this embodiment, after 5 minutes, the interface of the failed strap-type combustion cell can be effectively stabilized.
[0035] First, the hydrogen to be blown is pre-processed, and the hydrogen to be blown is heated to 80℃, and the hydrogen to be blown is saturated by water vapor injection; at this time, the evaporation and condensation processes of water vapor reach a dynamic balance, the number of water molecules evaporated into the hydrogen is equal to the number of water molecules condensed from the hydrogen, if the saturated hydrogen is injected with water vapor or the temperature of the hydrogen is lowered, the excess water vapor will condense into liquid water.
[0036] Preferably, the heating temperature of the hydrogen to be blown is in the range of 75-85℃, and the temperature of the hydrogen to be blown in the preferred range is higher than the boiling point of water but lower than the glass transition temperature of the proton exchange membrane of the strap-type fuel cell, so as to avoid the proton exchange membrane of the strap-type fuel cell from changing from a glass state to a high-elastic state.
[0037] The electromagnetic valve of the purging device is started, after being powered on, a pulse signal is input to the coil in the electromagnetic valve body, the working magnetic flux generated by the coil attracts the moving core and opens the valve; when the pulse signal input is stopped, the moving core is released and returns to the initial state under the action of the spring force, and the valve is closed.
[0038] The opening and closing of the electromagnetic valve control the flow or cut-off of the hydrogen, and the hydrogen pulse is generated; The pulsed hydrogen purging device controls the wetness-saturated hydrogen pulse to be introduced from the anode inlet of the strap-type fuel cell; The base pressure generated by the electromagnetic valve is set to 0.2MPa, the peak pressure is set to 0.5MPa, the pulse period is set to 40s, and the duty cycle is set to 75%. 20 pressure pulses are applied according to the set parameters.
[0039] Preferably, the peak pressure is in the range of 0.4-0.6MPa, and the peak pressure in the preferred range can generate sufficient shear force without damaging the diffusion layer structure; Preferably, the duty cycle is in the range of 62.5%-87.5%, and the duty cycle in the preferred range can ensure that the full section of the flow passage is flushed in a single pulse.
[0040] Further, in an embodiment, with reference to Figure 2 , Figure 2 is Figure 1 the detailed flowchart of step S60 in FIG. 4. As shown in FIG. 4, step S60 includes: Figure 2 Step S601, after the third time duration, whether the contact resistance value of the failure target point decreases by more than or equal to the second threshold value is acquired; Step S6021, if the contact resistance value of the failure target point decreases by more than or equal to the second threshold value, pulse hydrogen blowing is performed on the failure target point.
[0041] In this embodiment, when the contact resistance value of the failure target point decreases by more than or equal to 30%, it indicates that the oxide layer of the failure target point is effectively broken, whether the contact resistance value of the failure target point decreases by more than or equal to 30% is detected; If the contact resistance value of the failure target point decreases by more than or equal to 30%, pulse hydrogen blowing is performed on the failure target point.
[0042] Further, in an embodiment, after the third time duration, whether the contact resistance value of the failure target point decreases by more than or equal to the second threshold value is detected, further comprising: Step S6022, if the contact resistance value of the failure target point decreases by less than the second threshold value, the vibration generating device is controlled to vibrate to apply a second vibration force to the torque wrench until the contact resistance value of the failure target point decreases by more than or equal to the second threshold value, wherein the second vibration force is greater than the first vibration force.
[0043] In this embodiment, if the contact resistance value of the failure target point decreases by less than 30%, the power of the vibration generating device is turned on again, the vibration generating device is controlled to vibrate at a frequency of 10 Hz to apply a second vibration force to the torque wrench, the contact resistance value of the failure target point is detected in real time until the contact resistance value of the failure target point decreases by more than or equal to 30%, wherein the vibration force generated by the vibration generating device vibrating at a frequency of 10 Hz is greater than the vibration force generated by the vibration generating device vibrating at a frequency of 5 Hz.
[0044] Further, in an embodiment, the control of the pulse hydrogen blowing device to perform pulse hydrogen blowing on the failure target point comprises: The pulse hydrogen blowing device is controlled to introduce a humidity-saturated hydrogen pulse from the band-type fuel cell anode inlet; When the gas pressure loss of the band-type fuel cell anode inlet and outlet is continuously less than the third threshold value, the pulse hydrogen blowing device is controlled to stop blowing.
[0045] In this embodiment, the gas pressure difference between the band-type fuel cell anode inlet and outlet is monitored in real time, and when the gas pressure difference between the band-type fuel cell anode inlet and outlet is less than 5 kPa for three times in succession, the process is terminated in advance.
[0046] The turbulent shear force generated by the hydrogen pulse is higher than that of the conventional constant blowing, which can efficiently remove liquid water and carbon deposits in the flow channel; while strengthening the stripping of pollutants, the damage to the diffusion layer structure is avoided.
[0047] Further, in an embodiment, referring to Figure 3 , Figure 3 for Figure 1 the flowchart after step S60. As shown in Figure 3 , after step S60, further includes: step S70, detecting the current density recovery rate of the belt-type fuel cell when operating at the rated voltage; step S80, if the current density recovery rate is less than the lower limit value of the preset recovery rate interval, performing ozone cleaning on the belt-type fuel cell until the current density recovery rate is in the preset recovery rate interval; step S90, if the current density recovery rate is in the preset recovery rate interval, controlling the pulse hydrogen purging device to pass the humidity-saturated hydrogen pulse from the anode inlet of the belt-type fuel cell until the current density recovery rate is greater than the upper limit value of the preset recovery rate interval.
[0048] In this embodiment, the current density recovery rate of the belt-type fuel cell when operating at the rated voltage 0.6V is detected; If the current density recovery rate is less than 85%, ozone cleaning is performed on the belt-type fuel cell until the current density recovery rate reaches 85%; If the current density recovery rate is in the interval of 85%-95%, the pulse hydrogen purging device is controlled to pass the humidity-saturated hydrogen pulse from the anode inlet of the belt-type fuel cell, and the pulse hydrogen purging is continued until the current density recovery rate is greater than 95%.
[0049] In a second aspect, the embodiments of the present application also provide a belt-type fuel cell failure recovery device.
[0050] In an embodiment, referring to Figure 4 , Figure 4 is a functional module schematic diagram of an embodiment of the belt-type fuel cell failure recovery device of the present application. As shown in Figure 4 , the belt-type fuel cell failure recovery device includes: a positioning module 10 for positioning the failure target point of the belt-type fuel cell; a determination module 20 for determining the belt corresponding to the failure target point and the fastening bolt fixing the belt; an adjustment module 30 for controlling the torque wrench to adjust the torque of the fastening bolt to a first threshold value; the first threshold value is higher than the initial torque of the fastening bolt; a vibration module 40 for controlling the vibration generating device to vibrate for applying a first vibration force to the torque wrench after a first time length, and maintaining for a second time length, wherein the vibration generating device is connected to the torque wrench; a stopping module 50 for controlling the vibration generating device to stop vibrating; The blowing module 60 is configured to control the pulse hydrogen blowing device to perform pulse hydrogen blowing on the failed target point after the third time length.
[0051] Further, in an embodiment, the band-type fuel cell failure recovery device further comprises an obtaining module configured to: obtain the temperature and the contact resistance value of the band contact area when the band-type fuel cell is operated at the rated current density; mark the band contact area with the temperature greater than the temperature threshold value and / or the contact resistance value greater than the contact resistance threshold value as the failed target point.
[0052] Further, in an embodiment, the band-type fuel cell failure recovery device further comprises a detecting module configured to: detect whether the contact resistance value of the failed target point decreases by more than or equal to the second threshold value after the third time length; perform pulse hydrogen blowing on the failed target point if the contact resistance value of the failed target point decreases by more than or equal to the second threshold value.
[0053] Further, in an embodiment, the band-type fuel cell failure recovery device further comprises a controlling module configured to: control the vibration generating device to vibrate to apply the second vibration force to the torque wrench until the contact resistance value of the failed target point decreases by more than or equal to the second threshold value if the contact resistance value of the failed target point decreases by less than the second threshold value, wherein the second vibration force is greater than the first vibration force.
[0054] Further, in an embodiment, the band-type fuel cell failure recovery device further comprises a controlling module configured to: control the pulse hydrogen blowing device to introduce a humidity-saturated hydrogen pulse from the anode inlet of the band-type fuel cell; control the pulse hydrogen blowing device to stop blowing when the gas pressure loss of the anode inlet and the outlet of the band-type fuel cell is continuously less than the third threshold value.
[0055] Further, in an embodiment, the band-type fuel cell failure recovery device further comprises a detecting module configured to: detect the current density recovery rate when the band-type fuel cell is operated at the rated voltage; perform ozone cleaning on the failed target point until the current density recovery rate is in the preset recovery rate interval if the current density recovery rate is less than the lower limit value of the preset recovery rate interval; control the pulse hydrogen blowing device to introduce a humidity-saturated hydrogen pulse from the anode inlet of the band-type fuel cell until the current density recovery rate is greater than the upper limit value of the preset recovery rate interval if the current density recovery rate is in the preset recovery rate interval.
[0056] The functions of each module in the above bandage fuel cell failure recovery device correspond to each step in the above bandage fuel cell failure recovery method embodiment, and the functions and implementation processes are not repeated here.
[0057] In a third aspect, the embodiments of the present application provide a bandage fuel cell failure recovery device. The bandage fuel cell failure recovery device can be a personal computer (PC), a notebook computer, a server, or other device with data processing function.
[0058] Referring to Figure 5 , Figure 5 FIG. 1 is a schematic diagram of a hardware structure of a bandage fuel cell failure recovery device according to an embodiment of the present application. In the embodiments of the present application, the bandage fuel cell failure recovery device can include a processor, a memory, a communication interface, and a communication bus.
[0059] The communication bus can be of any type, used to interconnect the processor, the memory, and the communication interface.
[0060] The communication interface includes an input / output (I / O) interface, a physical interface, and a logical interface, and other interfaces used to interconnect devices inside the bandage fuel cell failure recovery device, and interfaces used to interconnect the bandage fuel cell failure recovery device with other devices (such as other computing devices or user devices). The physical interface can be an Ethernet interface, a fiber interface, an ATM interface, etc.; the user device can be a display (Display), a keyboard (Keyboard), etc.
[0061] The memory can be various types of storage media, such as random access memory (RAM), read-only memory (ROM), non-volatile RAM (NVRAM), flash memory, optical storage, hard disk, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), etc.
[0062] The processor can be a general processor, which can invoke a bandage fuel cell failure recovery program stored in the memory and execute the bandage fuel cell failure recovery method provided by the embodiments of the present application. For example, the general processor can be a central processing unit (CPU). The method executed when the bandage fuel cell failure recovery program is invoked can refer to various embodiments of the bandage fuel cell failure recovery method of the present application, which will not be described herein.
[0063] Those skilled in the art can understand that the hardware structure shown in the foregoing embodiments is not a limitation of the present application, and can include more or fewer components than those shown, or combine certain components, or different component arrangements. Figure 5
[0064] In a fourth aspect, the embodiments of the present application further provide a computer readable storage medium.
[0065] The computer readable storage medium of the present application stores a bandage fuel cell failure recovery program, wherein the bandage fuel cell failure recovery program, when executed by a processor, implements the steps of the bandage fuel cell failure recovery method as described above.
[0066] The method implemented when the bandage fuel cell failure recovery program is executed can refer to various embodiments of the bandage fuel cell failure recovery method of the present application, which will not be described herein.
[0067] It should be noted that the above-mentioned sequence numbers of the embodiments of the present application are only for description, and do not represent the advantages or disadvantages of the embodiments.
[0068] The terms "comprising" and "having" and any variations thereof in the specification and claims of the present application and the above-described drawings are intended to cover not exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or units inherent to the process, method, product or device. The terms "first", "second" and "third" and the like descriptions are used to distinguish different objects, and do not represent the order or limit the types of "first", "second" and "third".
[0069] In the description of the embodiments of the present application, "exemplary", "for example", "for instance" or the like is used to represent an example, illustration or description. Any embodiment or design scheme described as "exemplary", "for example" or "for instance" in the embodiments of the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the words "exemplary", "for example" or "for instance" are intended to present the relevant concept in a specific manner.
[0070] In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in the text only describes the relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can mean that A exists alone, A and B exist together, and B exists alone, and in addition, in the description of the embodiments of the present application, "multiple" means two or more than two.
[0071] In some processes described in the embodiments of the present application, a plurality of operations or steps are included, which appear in a specific order, but it should be understood that these operations or steps can be executed or executed in parallel without the order in which they appear in the embodiments of the present application, and the serial number of the operation is only used to distinguish different operations, and the serial number itself does not represent any execution order. In addition, these processes can include more or fewer operations, and these operations or steps can be executed in sequence or in parallel, and these operations or steps can be combined.
[0072] From the above description of the embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment method can be realized by means of software and the necessary general hardware platform, of course, it can also be realized by hardware, but in many cases the former is a better embodiment. Based on such understanding, the technical solutions of the present application can be embodied in the form of a software product, which is stored in a storage medium (such as a ROM / RAM, a magnetic disk, an optical disk) as described above, and includes a plurality of instructions for making a terminal device execute the method described in each embodiment of the present application.
[0073] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.
Claims
1. A method for failure recovery of a strapped fuel cell, characterized in that, include: Locating the failure target point of a strapped fuel cell; Determine the strap corresponding to the failure target point and the fastening bolts that secure the strap; The torque wrench is used to adjust the torque of the fastening bolt to a first threshold value; After a first duration, the vibration generating device is controlled to vibrate to apply a first vibration force to the torque wrench, and this is maintained for a second duration, wherein the vibration generating device is connected to the torque wrench; Control the vibration generator to stop vibrating; After the third time interval, the pulsed hydrogen purging device is controlled to perform pulsed hydrogen purging on the failed target point.
2. The failure recovery method for a strapped fuel cell as described in claim 1, characterized in that, The target points for locating failure points in strapped fuel cells include: Obtain the contact resistance value of the strap contact area of the strapped fuel cell and the temperature of the strap contact area when the strapped fuel cell is running at the rated current density. The strap contact areas where the temperature exceeds the temperature threshold and / or the contact resistance value exceeds the contact resistance threshold are marked as failure targets.
3. The failure recovery method for a strapped fuel cell as described in claim 1, characterized in that, The first threshold is higher than the initial torque of the fastening bolt.
4. The failure recovery method for a strapped fuel cell as described in claim 1, characterized in that, After the third time interval, controlling the pulsed hydrogen purging device to perform pulsed hydrogen purging on the failed target point includes: After the third time period, check whether the decrease in the contact resistance value of the failed target point is greater than or equal to the second threshold. If the decrease in contact resistance at the failed target point is greater than or equal to the second threshold, then the pulsed hydrogen purging device is controlled to perform pulsed hydrogen purging on the failed target point.
5. The failure recovery method for a strapped fuel cell as described in claim 4, characterized in that, After detecting whether the decrease in contact resistance at the failed target point is greater than or equal to the second threshold, the following steps are also included: If the decrease in contact resistance at the failed target point is less than the second threshold, the vibration generating device is controlled to vibrate to apply a second vibration force to the torque wrench until the decrease in contact resistance at the failed target point is greater than or equal to the second threshold, wherein the second vibration force is greater than the first vibration force.
6. The failure recovery method for a strapped fuel cell as described in claim 1, characterized in that, Controlling the pulsed hydrogen purging device to perform pulsed hydrogen purging on the failed target point includes: A pulsed hydrogen purging device is used to introduce a saturated hydrogen pulse from the anode inlet of the strapped fuel cell. When the gas pressure loss at the anode inlet and outlet of the strapped fuel cell is continuously less than the third threshold, the pulsed hydrogen purging device is controlled to stop purging.
7. The failure recovery method for a strapped fuel cell as described in claim 1, characterized in that, After controlling the pulsed hydrogen purging device to perform pulsed hydrogen purging on the failed target point, the method further includes: Obtain the current density recovery rate of the strapped fuel cell when it is operating at rated voltage; If the current density recovery rate is less than the lower limit of the preset recovery rate range, ozone cleaning is performed on the strapped fuel cell until the current density recovery rate is within the preset recovery rate range. If the current density recovery rate is within the preset recovery rate range, the pulsed hydrogen purging device is controlled to introduce a humidity-saturated hydrogen pulse from the anode inlet of the strapped fuel cell until the current density recovery rate exceeds the upper limit of the preset recovery rate range.
8. A strap-on fuel cell failure recovery device, characterized in that, include: A positioning module is used to locate the failure target point of a strapped fuel cell. The determination module is used to determine the strap corresponding to the failure target point and the fastening bolts that fix the strap; An adjustment module is used to control the torque wrench to adjust the torque of the fastening bolt to a first threshold value; A vibration module is used to control the vibration generating device to vibrate after a first duration to apply a first vibration force to the torque wrench, and maintain it for a second duration, wherein the vibration generating device is connected to the torque wrench; A stop module is used to control the vibration generator to stop vibrating; The purging module is used to control the pulsed hydrogen purging device to perform pulsed hydrogen purging on the failed target point after a third time period.
9. A device for restoring the durability of a strapped fuel cell, characterized in that, The strapped fuel cell durability recovery device includes a processor, a memory, and a strapped fuel cell durability recovery program stored in the memory and executable by the processor, wherein when the strapped fuel cell durability recovery program is executed by the processor, it implements the steps of the strapped fuel cell durability recovery method as described in any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a strapped fuel cell durability recovery program, wherein when the strapped fuel cell durability recovery program is executed by a processor, it implements the steps of the strapped fuel cell durability recovery method as described in any one of claims 1 to 7.