Method and device for processing dry burning fault of PTC heater, medium and equipment

Abstract

The invention provides a processing method and device for a dry burning fault of a PTC heater, a medium and equipment, and the method comprises the steps: reducing the heating power of the PTC heater to the lowest level and lasting for a first preset time if the PTC heater fails; if the PTC heater does not return to the normal operation state, the PTC heater is restarted; if the PTC heater is still not recovered, the PTC heater is controlled to stop; state information of the PTC heater is monitored in real time in the working process of the PTC heater, if the PTC heater is in a fault operation state, power downshift operation is firstly carried out on the PTC heater, if the PTC heater cannot return to normal, the PTC heater is restarted, and the PTC heater is controlled to stop when the PTC heater cannot return to normal after being restarted, that is, downshift and restart measures are taken to try to recover functions of the PTC heater when the PTC heater fails. And only when the PTC heater cannot be recovered, shutdown is performed, so that the use effect of the PTC heater is improved as much as possible on the premise that the dry burning risk of the PTC heater is reduced, and the riding comfort and the driving reliability of the vehicle are improved.

Description

Technical Field

[0001] The present application relates to the technical field of PTC heater control strategies, and in particular to a method, device, medium, and equipment for processing a dry-burning failure of a PTC heater. Background Art

[0002] A PTC heater uses a PTC heating element to heat the vehicle's coolant. Its primary function is to provide heat to the battery and passengers in low-temperature environments. In particular, most new energy vehicles utilize a PTC heater assembly to heat the entire vehicle. During the heating process, the PTC heater may dry-burn. As vehicle operating conditions become increasingly complex, the probability of dry-burning damage to the PTC heater assembly increases.

[0003] In order to prevent the PTC heater assembly from overheating or being damaged by dry burning, the current solution is mostly to set a temperature upper limit. When the temperature value fed back by the water temperature sensor reaches the preset temperature upper limit, the current of the heating unit in the PTC heater is cut off or limited to prevent dry burning and burning of the PTC heater assembly. However, the shutdown of the PTC heater assembly will cause the passenger compartment circuit to lose its heating function, resulting in a serious lack of passenger compartment comfort in winter, and the battery pack circuit will also lose its heating function, resulting in low discharge efficiency of the battery pack under low temperature conditions, affecting the endurance of the entire vehicle, and even causing the battery pack to be unable to discharge under extremely low temperature conditions, and the entire vehicle cannot be started. Therefore, there is an urgent need for a solution that can maximize the use effect of the PTC heater while protecting it. Summary of the Invention

[0004] In order to solve the above technical problems, the present application is proposed. The embodiments of the present application provide a method, device, medium and equipment for handling a dry-burning failure of a PTC heater.

[0005] According to one aspect of the present application, a method for handling a dry-burning failure of a PTC heater is provided, comprising: obtaining status information of the PTC heater; wherein the status information includes a normal operating state and a faulty operating state; if the status information of the PTC heater is a faulty operating state, reducing the heating power of the PTC heater to a minimum level and maintaining it for a first preset time; if the PTC heater has not recovered to a normal operating state, restarting the PTC heater; and if the PTC heater still has not recovered to a normal operating state, controlling the PTC heater to shut down.

[0006] In one embodiment, if the PTC heater has not resumed normal operation, restarting the PTC heater includes: if the PTC heater has not resumed normal operation, disconnecting the low-voltage relay of the PTC heater and continuing for a second preset time period; and re-closing the low-voltage relay of the PTC heater to restart the PTC heater.

[0007] In one embodiment, restarting the PTC heater includes restarting the PTC heater and starting the PTC heater in sequence from low to high gear.

[0008] In one embodiment, if the PTC heater has not yet recovered to a normal operating state, controlling the PTC heater to shut down includes: if the PTC heater has not yet recovered to a normal operating state after multiple restarts, controlling the PTC heater to shut down.

[0009] In one embodiment, the method for handling a dry-burning failure of the PTC heater further includes: if the PTC heater recovers to a normal operating state, controlling the PTC heater to operate normally.

[0010] In one embodiment, obtaining the status information of the PTC heater includes: obtaining the inlet water temperature, outlet water temperature, circuit board temperature and transistor temperature of the PTC heater; and determining the status information of the PTC heater based on the inlet water temperature, outlet water temperature, circuit board temperature and transistor temperature of the PTC heater.

[0011] In one embodiment, determining the status information of the PTC heater based on the inlet water temperature, outlet water temperature, circuit board temperature and transistor temperature of the PTC heater includes: if the PTC heater meets any one of the following conditions, determining that the status information of the PTC heater is a faulty operating state: the inlet water temperature exceeds a first preset temperature, the outlet water temperature exceeds a second preset temperature, the temperature difference between the inlet water temperature and the outlet water temperature exceeds a third preset temperature, the circuit board temperature exceeds a fourth preset temperature, and the transistor temperature exceeds a fifth preset temperature.

[0012] According to another aspect of the present application, a device for processing a dry-burning failure of a PTC heater is provided, comprising: a status acquisition module for acquiring status information of the PTC heater; wherein the status information includes a normal operating state and a faulty operating state; a power downshift module for reducing the heating power of the PTC heater to a lowest gear and maintaining it for a first preset time period if the status information of the PTC heater is a faulty operating state; a heater restart module for restarting the PTC heater if the PTC heater has not recovered to a normal operating state; and a heater shutdown module for controlling the PTC heater to shut down if the PTC heater still has not recovered to a normal operating state.

[0013] According to another aspect of the present application, a computer-readable storage medium is provided, wherein the storage medium stores a computer program, and the computer program is used to execute any of the above methods.

[0014] According to another aspect of the present application, an electronic device is provided, comprising: a processor; a memory for storing instructions executable by the processor; and the processor for executing any of the above methods.

[0015] The present application provides a method, device, medium and equipment for handling a dry-burning failure of a PTC heater, by obtaining status information of the PTC heater; wherein the status information includes a normal operating status and a faulty operating status; if the status information of the PTC heater is a faulty operating status, the heating power of the PTC heater is reduced to the lowest gear and maintained for a first preset time period; if the PTC heater has not recovered to a normal operating status, the PTC heater is restarted; if the PTC heater still has not recovered to a normal operating status, the PTC heater is controlled to shut down; during the operation of the PTC heater, its status information is monitored in real time, and if the PTC heater is in a faulty operating status, the power of the PTC heater is first downshifted, and if it cannot be restored to normal, the PTC heater is restarted. If it still cannot be restored after restarting, the PTC heater is controlled to shut down, that is, when the PTC heater fails, downshifting and restarting measures are taken to try to restore its function, and the PTC heater is shut down only when it cannot be restored, so as to maximize the use effect of the PTC heater while reducing the risk of dry-burning of the PTC heater, thereby improving the riding comfort and driving reliability of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other purposes, features, and advantages of the present application will become more apparent through a more detailed description of the embodiments of the present application in conjunction with the accompanying drawings. The accompanying drawings are intended to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the drawings, the same reference numerals generally represent the same components or steps.

[0017] Figure 1 It is a flowchart of a method for handling a dry-burning failure of a PTC heater provided by an exemplary embodiment of the present application.

[0018] Figure 2 It is a structural schematic diagram of a device for processing a dry-burning failure of a PTC heater provided by an exemplary embodiment of the present application.

[0019] Figure 3 It is a structural diagram of an electronic device provided by an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0020] Below, the exemplary embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application, and it should be understood that the present application is not limited to the exemplary embodiments described herein.

[0021] Figure 1 FIG. 1 is a flow chart of a method for handling a dry-burning failure of a PTC heater provided by an exemplary embodiment of the present application. Figure 1 As shown, the method for handling the dry burning failure of the PTC heater includes the following steps: Step 110: Obtain status information of the PTC heater.

[0022] The status information includes normal operating status and faulty operating status. After the vehicle is powered on with high voltage, the PTC heater enters the pre-start state upon receiving an enable signal from a controller (e.g., a vehicle controller). When the duty cycle signal received from the controller is greater than a preset signal threshold (the minimum power request signal value for the PTC heater, set based on vehicle performance), the PTC heater starts heating in the corresponding gear. In addition, during operation, the PTC heater will monitor the temperature values ​​of relevant components or positions in real time, and determine whether the operating status of the PTC heater is normal or faulty based on the temperature values, and upload the status information of the PTC heater in real time, for example, to the vehicle controller. The vehicle controller issues corresponding control instructions based on the status information of the PTC heater, so as to comprehensively consider the heating needs of the vehicle and the status information of the PTC heater, thereby generating the optimal control strategy, which can not only ensure the safety of the PTC heater (for example, avoiding dry burning damage), but also reduce the impact of false alarms of the PTC heater or the control of the PTC heater shutdown when the PTC heater is in a state that can be easily repaired (for example, reduced comfort in the passenger compartment caused by the shutdown of the PTC heater, low battery pack discharge efficiency and low cruising range due to low battery pack temperature, and inability to discharge the battery pack under extremely low temperature conditions). Therefore, the response effect of the vehicle heating demand and the comfort of the vehicle are improved.

[0023] Step 120: If the state information of the PTC heater is in the fault running state, the heating power of the PTC heater is reduced to the lowest level and lasts for a first preset time length.

[0024] If the PTC heater is determined to be in the fault running state (i.e. in the dry burning state or about to enter the dry burning state) based on the temperature value of one or more related components, at this time, the temperature of some components may be increased to a higher value due to the heating power being too high. In order to further determine whether the PTC heater has a dry burning fault, the application reduces the heating power of the PTC heater to the lowest level and lasts for a period of time (for example, 3 minutes) before determining again whether the PTC heater is faulty. If the state information of the PTC heater is in the normal running state, go to step 110 to continue monitoring the state information of the PTC heater to ensure the safe running of the PTC heater.

[0025] Step 130: If the PTC heater does not recover to the normal running state, restart the PTC heater.

[0026] If the PTC heater does not recover to the normal running state after the step of reducing the heating power, i.e. the PTC heater is still in the fault running state after the heating power of the PTC heater is reduced to the lowest level and lasts for a first preset time length, it indicates that the components with high temperature may not be caused by the heating power being too high. At this time, it can be determined that the PTC heater indeed has a fault. In order to stop the fault running of the PTC heater in time, the application executes the operation of restarting the PTC heater. If the PTC heater recovers to the normal running state after the step of reducing the heating power, it indicates that the temperature of some components may be too high due to the heating power of the PTC heater being too high (for example, the cabin temperature is set too high, etc.). At this time, go to step 110 to continue monitoring the state information of the PTC heater to ensure the safe running of the PTC heater.

[0027] Step 140: If the PTC heater still does not recover to the normal running state, control the PTC heater to stop.

[0028] The application realizes the software repair of the PTC heater by restarting the PTC heater. If the PTC heater still does not recover to the normal running state after being restarted, it indicates that the fault of the PTC heater cannot be repaired by restarting. At this time, in order to protect the PTC heater, the application controls the PTC heater to stop. If the PTC heater recovers to the normal running state after being restarted, it indicates that the fault state of the PTC heater is repaired by restarting. At this time, go to step 110 to continue monitoring the state information of the PTC heater to ensure the safe running of the PTC heater.

[0029] The application provides a PTC heater dry burning fault processing method, which comprises the following steps: acquiring state information of a PTC heater; wherein the state information comprises a normal running state and a fault running state; if the state information of the PTC heater is the fault running state, reducing the heating power of the PTC heater to the lowest gear and keeping for a first preset time length; if the PTC heater does not recover to the normal running state, restarting the PTC heater; if the PTC heater still does not recover to the normal running state, stopping the PTC heater; and monitoring the state information of the PTC heater in real time during the working process of the PTC heater, performing power reduction operation on the PTC heater if the PTC heater appears in the fault running state, restarting the PTC heater if the PTC heater cannot recover to the normal state, and stopping the PTC heater only if the PTC heater still cannot recover to the normal state after the restart, so as to reduce the dry burning risk of the PTC heater, improve the use effect of the PTC heater as much as possible, and improve the ride comfort and driving reliability of the vehicle.

[0030] In an embodiment, the specific implementation of the above step 130 can be: if the PTC heater does not recover to the normal running state, disconnecting the low-voltage relay of the PTC heater and keeping for a second preset time length; and again attracting the low-voltage relay of the PTC heater to restart the PTC heater.

[0031] If the PTC heater still does not recover to the normal running state after being reduced to the lowest gear, the low-voltage relay of the PTC heater can be disconnected, and after waiting for a period of time (for example, 30 seconds), the low-voltage relay is again attracted to realize the restart operation of the PTC heater.

[0032] In an embodiment, the specific implementation of the above step 130 can be: restarting the PTC heater and starting the PTC heater in turn according to the order from low to high gears.

[0033] After the PTC heater is restarted, the heating function of the PTC heater is started in turn according to the order from the minimum gear to the maximum gear, so as to gradually increase the heating power of the PTC heater from small to large, and avoid the damage or fault of the PTC heater caused by the sudden large power. If the PTC heater can normally run in the process from the minimum gear to the maximum gear, it can be determined that the PTC heater has recovered to the normal running state, otherwise it is determined that the PTC heater has not recovered to the normal running state.

[0034] In an embodiment, the specific implementation of the above step 140 can be: if the PTC heater still does not recover to the normal running state after being restarted for multiple times, stopping the PTC heater.

[0035] The application can set the number of restarts of the PTC heater. The PTC heater can be restarted multiple times to perform repair operations on the PTC heater. That is, the PTC heater can be restarted again after a single restart of the PTC heater does not restore the normal operating state. After each restart of the PTC heater, the heating function of the PTC heater is started in turn from the minimum gear to the highest gear to detect whether the PTC heater has returned to the normal operating state. If the PTC heater returns to the normal operating state after a certain restart, the PTC heater enters the normal operation according to the vehicle heating demand. Otherwise, if the PTC heater does not return to the normal operating state after the number of restarts reaches a preset number of threshold (for example, 3 times), the PTC heater is stopped. Optionally, the application can be spaced a certain time (for example, 50 seconds) between two restarts to minimize the impact of the PTC heater restart on the comfort of the vehicle.

[0036] In an embodiment, the method for processing the dry burning fault of the PTC heater can further include: if the PTC heater returns to the normal operating state, controlling the PTC heater to normally operate.

[0037] If the normal operation of the PTC heater is restored by the downshift operation or the restart operation, the PTC heater is controlled to normally operate according to the vehicle heating demand, and the operating state of the PTC heater is monitored in real time.

[0038] In an embodiment, the specific implementation of the step 110 can be: acquiring the inlet water temperature, the outlet water temperature, the circuit board temperature, and the transistor temperature of the PTC heater; and determining the state information of the PTC heater based on the inlet water temperature, the outlet water temperature, the circuit board temperature, and the transistor temperature of the PTC heater.

[0039] The application acquires the inlet water temperature, the outlet water temperature, the circuit board temperature, and the transistor temperature of the PTC heater in real time, and determines the state information of the PTC heater based on the inlet water temperature, the outlet water temperature, the circuit board temperature, and the transistor temperature of the PTC heater. If it is determined that the state information of the PTC heater is the normal operating state, the PTC heater is controlled to start the corresponding heating power according to the vehicle heating demand to meet the vehicle heating demand, and the state information of the PTC heater is monitored in real time. If it is determined that the state information of the PTC heater is the fault operating state, the repair method provided in the above embodiments can be adopted to attempt to restore the PTC heater to the normal operating state, thereby minimizing the impact of the shutdown of the PTC heater on the comfort of the vehicle and the driving reliability.

[0040] In one embodiment, the specific implementation method of the above step 110 can be: if the PTC heater meets any one of the following conditions, the status information of the PTC heater is determined to be a faulty operating state: the inlet water temperature exceeds the first preset temperature, the outlet water temperature exceeds the second preset temperature, the temperature difference between the inlet water temperature and the outlet water temperature exceeds the third preset temperature, the circuit board temperature exceeds the fourth preset temperature, and the transistor temperature exceeds the fifth preset temperature.

[0041] The present application collects the inlet water temperature, outlet water temperature, circuit board temperature, and transistor temperature of the PTC heater in real time and determines that the PTC heater status information is in a faulty operating state when any of the following five conditions are met: the inlet water temperature exceeds a first preset temperature (and persists for a period of time), the outlet water temperature exceeds a second preset temperature (and persists for a period of time), the temperature difference between the inlet and outlet water temperatures exceeds a third preset temperature, the circuit board temperature exceeds a fourth preset temperature, and the transistor temperature exceeds a fifth preset temperature. The first, second, third, fourth, and fifth preset temperatures can be pre-set based on the actual vehicle conditions. Furthermore, after performing a repair operation on the PTC heater, the present application determines that the PTC heater has returned to normal operation if none of the above five conditions are met (i.e., the inlet water temperature does not exceed the first preset temperature (and persists for a period of time), the outlet water temperature does not exceed the second preset temperature (and persists for a period of time), the temperature difference between the inlet and outlet water temperatures does not exceed the third preset temperature, the circuit board temperature does not exceed the fourth preset temperature, and the transistor temperature does not exceed the fifth preset temperature).

[0042] Figure 2 Schematic diagram of a device for processing a dry-burning failure of a PTC heater provided by an exemplary embodiment of the present application. Figure 2 As shown, the processing device 20 for the dry-burning fault of the PTC heater includes: a state acquisition module 21, which is used to obtain the state information of the PTC heater; wherein the state information includes a normal operating state and a faulty operating state; a power downshift module 22, which is used to reduce the heating power of the PTC heater to the lowest gear and maintain it for a first preset time if the state information of the PTC heater is a faulty operating state; a heater restart module 23, which is used to restart the PTC heater if the PTC heater has not recovered to the normal operating state; and a heater shutdown module 24, which is used to control the PTC heater to shut down if the PTC heater still has not recovered to the normal operating state.

[0043] The present application provides a device for processing a dry-burning fault of a PTC heater, which obtains status information of the PTC heater through a status acquisition module 21; wherein the status information includes a normal operating state and a faulty operating state; if the status information of the PTC heater is a faulty operating state, the power downshift module 22 reduces the heating power of the PTC heater to the lowest gear and maintains it for a first preset time period; if the PTC heater has not recovered to a normal operating state, the heater restart module 23 restarts the PTC heater; if the PTC heater still has not recovered to a normal operating state, the heater shutdown module 24 controls the PTC heater to shut down; during the operation of the PTC heater, its status information is monitored in real time; if the PTC heater has a faulty operating state, the power of the PTC heater is first downshifted; if it cannot recover to normal, the PTC heater is restarted; if it still cannot recover after restarting, the PTC heater is controlled to shut down, that is, when the PTC heater fails, downshifting and restarting measures are taken to try to restore its function, and the PTC heater is shut down only when it cannot recover, so as to maximize the use effect of the PTC heater while reducing the risk of dry-burning of the PTC heater, thereby improving the riding comfort and driving reliability of the vehicle.

[0044] In one embodiment, the heater restart module 23 may be further configured to: if the PTC heater does not resume normal operation, disconnect the low-voltage relay of the PTC heater and continue for a second preset time; and re-engage the low-voltage relay of the PTC heater to restart the PTC heater.

[0045] In one embodiment, the heater restart module 23 may be further configured to restart the PTC heater and start the PTC heaters in order from low to high gears.

[0046] In one embodiment, the heater shutdown module 24 may be further configured to: if the PTC heater has not recovered to a normal operating state after multiple restarts, control the PTC heater to shut down.

[0047] In one embodiment, the device 20 for processing a dry-burning fault of the PTC heater may be further configured to: if the PTC heater recovers to a normal operating state, control the PTC heater to operate normally.

[0048] In one embodiment, the above-mentioned status acquisition module 21 can be further configured to: obtain the inlet water temperature, outlet water temperature, circuit board temperature and transistor temperature of the PTC heater; and determine the status information of the PTC heater based on the inlet water temperature, outlet water temperature, circuit board temperature and transistor temperature of the PTC heater.

[0049] In one embodiment, the above-mentioned status acquisition module 21 can be further configured as follows: if the PTC heater meets any one of the following conditions, the status information of the PTC heater is determined to be a faulty operating state: the inlet water temperature exceeds the first preset temperature, the outlet water temperature exceeds the second preset temperature, the temperature difference between the inlet water temperature and the outlet water temperature exceeds the third preset temperature, the circuit board temperature exceeds the fourth preset temperature, and the transistor temperature exceeds the fifth preset temperature.

[0050] Below, reference Figure 3 The electronic device according to the embodiment of the present application is described. The electronic device may be either or both of the first device and the second device, or a standalone device independent of them, and the standalone device may communicate with the first device and the second device to receive collected input signals from them.

[0051] Figure 3 The figure shows a block diagram of an electronic device according to an embodiment of the present application.

[0052] like Figure 3 As shown, the electronic device 10 includes one or more processors 11 and a memory 12 .

[0053] The processor 11 may be a central processing unit (CPU) or other forms of processing units having data processing capabilities and / or instruction execution capabilities, and may control other components in the electronic device 10 to perform desired functions.

[0054] The memory 12 may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may include, for example, random access memory (RAM) and / or cache memory. The non-volatile memory may include, for example, read-only memory (ROM), a hard disk, flash memory, etc. One or more computer program instructions may be stored on the computer-readable storage medium, and the processor 11 may execute the program instructions to implement the methods of the various embodiments of the present application described above and / or other desired functions. Various contents such as input signals, signal components, and noise components may also be stored in the computer-readable storage medium.

[0055] In one example, the electronic device 10 may further include an input device 13 and an output device 14 , and these components are interconnected via a bus system and / or other forms of connection mechanisms (not shown).

[0056] When the electronic device is a stand-alone device, the input device 13 may be a communication network connector, configured to receive collected input signals from the first device and the second device.

[0057] In addition, the input device 13 can include, for example, a keyboard, a mouse, and the like.

[0058] The output device 14 can output various information, including the determined distance information, direction information, and the like, to the outside. The output device 14 can include, for example, a display, a speaker, a printer, a communication network and a remote output device connected thereto, and the like.

[0059] Of course, in order to simplify, Figure 3 Only some of the components in the electronic device 10 related to the present application are shown in FIG. 1, and components such as a bus, an input / output interface, and the like are omitted. In addition, the electronic device 10 can include any other appropriate components according to a specific application.

[0060] In addition to the methods and devices described above, an embodiment of the present application can also be a computer program product including computer program instructions that, when executed by a processor, cause the processor to perform steps of the methods according to various embodiments of the present application described in the above "Exemplary Methods" section of the specification.

[0061] The computer program product can be written in any combination of one or more programming languages, including an object-oriented programming language such as Java, C++, and the like, and conventional procedural programming languages, such as the "C" programming language, or the like. The program code can execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server.

[0062] In addition, an embodiment of the present application can also be a computer readable storage medium having stored thereon computer program instructions that, when executed by a processor, cause the processor to perform steps of the methods according to various embodiments of the present application described in the above "Exemplary Methods" section of the specification.

[0063] The computer readable storage medium can be embodied as one or more combinations of a readable medium and a readable medium can be a readable signal medium or a readable storage medium. A readable storage medium, for example, can include one or more of a semiconductor-based, a magnetic-based, an optical-based, an infrared-based, or a combination of any of these. A more specific example (a non-exhaustive list) of the readable storage medium includes an electrical connection having one or more wires, a portable disc, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0064] The above description of the application is described above with specific embodiments, but it should be pointed out that the advantages, advantages, effects mentioned in the application are only examples and not limitations, and these advantages, advantages, effects cannot be considered as the necessary possession of each embodiment of the application. In addition, the above specific details disclosed are only for the purpose of example and understanding, and not limited to the above specific details, which are not limited to the above specific details.

[0065] The block diagrams of the devices, apparatuses, equipment, systems involved in the application are only illustrative examples and are not intended to require or imply the connection, arrangement, configuration shown in the block diagram. As those skilled in the art will recognize, these devices, apparatuses, equipment, systems can be connected, arranged, configured in any manner. Words such as "include", "contain", "have" and the like are open-ended words, meaning "including but not limited to", and can be used interchangeably. The words "or" and "and" used herein mean the word "and / or", and can be used interchangeably unless the context clearly indicates otherwise. The word "such as" used herein means the phrase "such as but not limited to", and can be used interchangeably.

[0066] It should also be noted that in the devices, equipment and methods of the application, each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be considered as equivalent solutions of the application.

[0067] The above description of the disclosed aspects is provided so that any person skilled in the art can make or use the application. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of the application. Thus, the present application is not intended to be limited to the aspects shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0068] The above description has been provided for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although a number of example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A method for handling a dry burning failure of a PTC heater, characterized in that: include: Acquiring status information of the PTC heater; wherein the status information includes a normal operating state and a fault operating state; If the status information of the PTC heater is a faulty operating state, reducing the heating power of the PTC heater to a minimum level and continuing for a first preset time period; If the PTC heater does not return to normal operation, restarting the PTC heater; If the PTC heater still does not return to normal operation, the PTC heater is controlled to shut down.

2. The method for handling a dry burning failure of a PTC heater according to claim 1, characterized in that: If the PTC heater does not resume normal operation, restarting the PTC heater includes: If the PTC heater does not resume normal operation, disconnecting the low-voltage relay of the PTC heater for a second preset time period; The low-voltage relay of the PTC heater is attracted again to restart the PTC heater.

3. The method for handling a dry burning failure of a PTC heater according to claim 1 or 2, characterized in that: Restarting the PTC heater includes: Restart the PTC heater and start the PTC heater in sequence from low to high gear.

4. The method for handling a dry burning failure of a PTC heater according to claim 1, characterized in that: If the PTC heater has not yet recovered to a normal operating state, controlling the PTC heater to shut down includes: If the PTC heater does not resume normal operation after multiple restarts, the PTC heater is controlled to shut down.

5. The method for handling a dry burning failure of a PTC heater according to claim 1, characterized in that: The method for handling the dry burning failure of the PTC heater further includes: If the PTC heater returns to a normal operating state, the PTC heater is controlled to operate normally.

6. The method for handling a dry burning failure of a PTC heater according to claim 1, characterized in that: The acquiring of the status information of the PTC heater includes: Obtaining the inlet water temperature, outlet water temperature, circuit board temperature, and transistor temperature of the PTC heater; The status information of the PTC heater is determined based on an inlet water temperature, an outlet water temperature, a circuit board temperature, and a transistor temperature of the PTC heater.

7. The method for handling a dry burning failure of a PTC heater according to claim 6, characterized in that: The determining of the state information of the PTC heater based on the inlet water temperature, outlet water temperature, circuit board temperature, and transistor temperature of the PTC heater includes: If the PTC heater satisfies any one of the following conditions, it is determined that the state information of the PTC heater is in a faulty operating state: The inlet water temperature exceeds the first preset temperature, the outlet water temperature exceeds the second preset temperature, the temperature difference between the inlet water temperature and the outlet water temperature exceeds the third preset temperature, the circuit board temperature exceeds the fourth preset temperature, and the transistor temperature exceeds the fifth preset temperature.

8. A device for processing a PTC heater dry burning failure, characterized in that: include: A status acquisition module, configured to acquire status information of the PTC heater; wherein the status information includes a normal operating status and a fault operating status; a power downshift module, configured to reduce the heating power of the PTC heater to a minimum level and maintain the power for a first preset time period if the status information of the PTC heater indicates a faulty operation state; a heater restart module, configured to restart the PTC heater if the PTC heater has not recovered to a normal operating state; The heater shutdown module is used to control the PTC heater to shut down if the PTC heater has not yet recovered to a normal operating state.

9. A computer-readable storage medium, characterized in that The storage medium stores a computer program, and the computer program is used to execute the method according to any one of claims 1 to 7.

10. An electronic device, characterized in that: include: processor; a memory for storing instructions executable by the processor; The processor is configured to execute the method according to any one of claims 1 to 7.

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