Vehicle charging monitoring method and system, charging pile and storage medium

Abstract

The invention provides a vehicle charging monitoring method and system, a charging pile and a storage medium, and the method comprises the steps: obtaining the environment temperature and the charging information, determining the temperature alarm threshold values corresponding to different charging stages according to the environment temperature and the charging information, and carrying out the detection of the temperature alarm threshold values in a vehicle charging process. Battery charging parameters and the area temperature of the area where the vehicle is located are collected in real time, the current charging stage of the vehicle is determined according to the battery charging parameters, monitoring is conducted according to the temperature alarm threshold value and the area temperature corresponding to the current charging stage, and the temperature alarm threshold value is determined by considering the environment temperature factor. And moreover, the targeted temperature alarm threshold values are determined for different charging stages for monitoring, so that the false alarm rate is reduced, and the monitoring accuracy is improved.

Description

Technical Field

[0001] This application relates to the field of charging piles, and particularly to a monitoring method, system, charging pile and storage medium for vehicle charging. Background Art

[0002] With the development of new energy technologies, the number of electric vehicles and electric bicycles has increased dramatically. As supporting facilities for electric vehicles and electric bicycles, charging piles are also more and more widely used. However, during the process of vehicle charging using a charging pile, various faults or abnormal situations may occur, such as overload, short circuit, leakage, fire, etc. Therefore, how to effectively monitor the vehicle charging process is crucial.

[0003] Currently, for the monitoring of the charging process, it is usually to obtain the temperature around the circuit board of the charging pile and compare it with a preset default temperature threshold. When the temperature is higher than the default temperature threshold, it is considered that there is a safety risk. However, in different usage scenarios in summer or winter, the temperature around the circuit board of the charging pile will vary greatly, and the temperature changes in different stages of the charging process will also be different. Therefore, based on a fixed default temperature threshold for determination, it is impossible to accurately distinguish normal charging heat from real temperature anomalies, and the false alarm rate is high. Summary of the Invention

[0004] Embodiments of this application provide a monitoring method, system, charging pile and storage medium for vehicle charging to solve at least one problem existing in the related art. The technical solutions are as follows:

[0005] In a first aspect, embodiments of this application provide a method for monitoring vehicle charging, including:

[0006] Obtain the ambient temperature and charging information;

[0007] Determine temperature alarm thresholds corresponding to different charging stages according to the ambient temperature and the charging information;

[0008] During the vehicle charging process, real-time collect battery charging parameters and the regional temperature of the vehicle location area, and determine the current charging stage of the vehicle according to the battery charging parameters;

[0009] Monitor according to the temperature alarm threshold corresponding to the current charging stage and the regional temperature.

[0010] In an implementation manner, the determining temperature alarm thresholds corresponding to different charging stages according to the ambient temperature and the charging information includes:

[0011] Determine temperature increase values corresponding to different charging stages according to the charging information;

[0012] Determine the temperature warning thresholds corresponding to different charging stages according to the temperature increase values corresponding to different charging stages and the ambient temperature.

[0013] In one implementation, the determining the temperature increase values corresponding to different charging stages according to the charging information includes:

[0014] Determine the temperature increase values corresponding to different charging stages according to the preset data values corresponding to different charging stages;

[0015] Or, analyze the temperature change conditions of the vehicle in different charging stages according to the historical charging data of the vehicle, and determine the temperature increase values corresponding to different charging stages;

[0016] Or, according to the specification parameters of the charger, query the target charging data of charging with a charger having the same specification parameters as the specification parameters, and determine the temperature increase values corresponding to different charging stages according to the target charging data;

[0017] Wherein, the charging information includes one of the preset data values, the historical charging data, and the specification parameters of the charger.

[0018] In one implementation, the determining the temperature warning thresholds corresponding to different charging stages according to the temperature increase values corresponding to different charging stages and the ambient temperature includes:

[0019] Determine the temperature warning threshold corresponding to the constant current charging stage according to the sum of the temperature increase value corresponding to the constant current charging stage, the ambient temperature, and a preset buffer temperature;

[0020] Determine the temperature warning threshold corresponding to the constant voltage charging stage according to the sum of the temperature increase value corresponding to the constant voltage charging stage, the ambient temperature, and a preset buffer temperature;

[0021] Determine the temperature warning threshold corresponding to the trickle charging stage according to the sum of the temperature increase value corresponding to the trickle charging stage, the ambient temperature, and a preset buffer temperature.

[0022] In one implementation, the determining the current charging stage of the vehicle according to the battery charging parameters includes:

[0023] Read the remaining battery percentage obtained by the battery management system. When the remaining battery percentage is less than the first percentage threshold, determine that the current charging stage of the vehicle is the constant current charging stage. When the remaining battery percentage is greater than or equal to the first percentage threshold and less than the second percentage threshold, determine that the current charging stage of the vehicle is the constant voltage charging stage. When the remaining battery percentage is greater than or equal to the second percentage threshold, determine that the current charging stage of the vehicle is the trickle charging stage.

[0024] In one embodiment, determining the current charging stage of the vehicle according to the battery charging parameters includes:

[0025] Obtaining a plurality of charging current values within a preset time length, and determining a change value of the charging current according to the plurality of charging current values;

[0026] When any one of the charging current values is greater than the current threshold and the change value of the charging current is less than the change threshold, determining that the current charging stage of the vehicle is the constant current charging stage;

[0027] When the change value of the charging current is greater than the change threshold, determining that the current charging stage of the vehicle is the constant voltage charging stage;

[0028] When any one of the charging current values is less than the current threshold and the change value of the charging current is less than the change threshold, determining that the current charging stage of the vehicle is the trickle charging stage.

[0029] In one embodiment, the monitoring according to the temperature warning threshold corresponding to the current charging stage and the regional temperature includes:

[0030] When the regional temperature is greater than the temperature warning threshold corresponding to the current charging stage, determining an overflow temperature value of the regional temperature relative to the temperature warning threshold corresponding to the current charging stage;

[0031] When the overflow temperature value is less than the first temperature threshold, executing a first-level warning rule and sending a warning message to the background management personnel through the cloud management platform;

[0032] When the overflow temperature value is greater than or equal to the first temperature threshold and less than the second temperature threshold, executing a second-level warning rule and sending an alarm message to the engineering personnel in the area where the vehicle is located through the cloud management platform;

[0033] When the overflow temperature value is greater than or equal to the second temperature threshold, executing a third-level warning rule, forcibly ending the vehicle charging, and sending a warning message to the background management personnel through the cloud management platform and / or sending an alarm message to the engineering personnel in the area where the vehicle is located through the cloud management platform.

[0034] In a second aspect, an embodiment of the present application provides a vehicle charging monitoring system, including:

[0035] An acquisition module, configured to acquire the ambient temperature and charging information;

[0036] A first determination module, configured to determine temperature warning thresholds corresponding to different charging stages according to the ambient temperature and the charging information;

[0037] A second determination module, configured to collect battery charging parameters and the regional temperature of the area where the vehicle is located in real time during the vehicle charging process, and determine the current charging stage of the vehicle according to the battery charging parameters;

[0038] A monitoring module, configured to perform monitoring according to the temperature warning threshold corresponding to the current charging stage and the regional temperature.

[0039] In a third aspect, an embodiment of the present application provides a charging pile, including: a processor and a memory, where instructions are stored in the memory, and the instructions are loaded and executed by the processor to implement the method in any one of the above aspects.

[0040] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed, the method in any one of the above aspects is implemented.

[0041] The beneficial effects in the above technical solutions at least include:

[0042] By obtaining the ambient temperature and charging information, determining the temperature warning thresholds corresponding to different charging stages according to the ambient temperature and charging information, collecting the battery charging parameters and the regional temperature of the area where the vehicle is located in real time during the vehicle charging process, and determining the current charging stage of the vehicle according to the battery charging parameters, and performing monitoring according to the temperature warning threshold corresponding to the current charging stage and the regional temperature, considering the ambient temperature factor to determine the temperature warning threshold, compared with the fixed threshold method, the accuracy is higher, and determining the targeted temperature warning threshold for different charging stages for monitoring is beneficial to reducing the false alarm rate and improving the accuracy of monitoring.

[0043] The above summary is only for the purpose of the specification and is not intended to be limiting in any way. In addition to the above-described illustrative aspects, embodiments, and features, further aspects, embodiments, and features of the present application will be readily apparent by reference to the drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In the drawings, unless otherwise specified, the same reference numerals throughout the several views denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0045] Figure 1 It is a schematic flowchart of the steps of a method for monitoring vehicle charging according to an embodiment of the present application;

[0046] Figure 2System framework diagram of a specific application scenario of an embodiment of the present application;

[0047] Figure 3 Schematic diagram of the charging stage during the vehicle charging process of an embodiment of the present application;

[0048] Figure 4 Block diagram of the monitoring system for vehicle charging of an embodiment of the present application;

[0049] Figure 5 Block diagram of the charging pile of an embodiment of the present application. Detailed implementation manners

[0050] In the following, only some exemplary embodiments are briefly described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and descriptions are considered to be exemplary in nature rather than restrictive.

[0051] Referring to Figure 1 , a flowchart of the monitoring method for vehicle charging of an embodiment of the present application is shown. The monitoring method for vehicle charging can at least include steps S100 - S400:

[0052] S100. Obtain the environmental temperature and charging information.

[0053] S200. Determine the temperature warning thresholds corresponding to different charging stages according to the environmental temperature and charging information.

[0054] S300. During the vehicle charging process, real - time collect the battery charging parameters and the regional temperature of the area where the vehicle is located, and determine the current charging stage of the vehicle according to the battery charging parameters.

[0055] S400. Monitor according to the temperature warning threshold corresponding to the current charging stage and the regional temperature.

[0056] The technical solution of the embodiment of the present application, by obtaining the environmental temperature and charging information, determining the temperature warning thresholds corresponding to different charging stages according to the environmental temperature and charging information, during the vehicle charging process, real - time collecting the battery charging parameters and the regional temperature of the area where the vehicle is located, and determining the current charging stage of the vehicle according to the battery charging parameters, and monitoring according to the temperature warning threshold corresponding to the current charging stage and the regional temperature, considers the environmental temperature factor to determine the temperature warning threshold. Compared with the way of a fixed threshold, the accuracy is higher, and by determining the targeted temperature warning thresholds for different charging stages for monitoring, it is beneficial to reduce the false alarm rate and improve the accuracy of monitoring.

[0057] Such as Figure 2As shown, in one embodiment, the charging pile has multiple charging sockets. By setting a thermal imaging camera on the charging pile, the temperature of the charging area for vehicle parking near the charging pile can be obtained, that is, the area temperature of the area where the vehicle is located during charging (or the area temperature including the area where one or more sockets are located). It can be understood that if there is no vehicle charging, the area temperature at this time is actually equivalent to the ambient temperature. Therefore, the ambient temperature without vehicle charging and the area temperature with vehicle charging can be obtained through the thermal imaging camera. In the embodiments of the present application, the thermal imaging camera and the processor (such as MCU) of the charging pile are designed with a DI input interface. The ambient temperature and area temperature obtained by the thermal imaging camera can be transmitted to the processor of the charging pile through RS485, and analyzed and processed by the processor of the charging pile. For example, subsequently, the temperature alarm threshold corresponding to different charging stages is determined, and the current charging stage of the vehicle is determined. Moreover, the processor of the charging pile can interact with the cloud management platform to achieve collaborative monitoring of vehicle charging. For example, when there is a potential safety hazard, corresponding information is sent to the terminal of the relevant personnel through the cloud management platform to notify the relevant personnel to take corresponding measures.

[0058] It should be noted that one thermal imaging camera can obtain the area temperature of multiple charging areas, or multiple thermal imaging cameras can be set to obtain the area temperature of one charging area respectively. Therefore, correspondingly, the processor of the charging pile can monitor vehicle charging in different charging areas. In the embodiments of the present application, the monitoring of one charging area is taken as an example for illustration, and the monitoring principle of multiple charging areas is the same and will not be elaborated. In addition, the vehicle in the embodiments of the present application can refer to an electric bicycle, an electric motorcycle or an electric vehicle, without specific limitation.

[0059] In one embodiment, the charging information includes one of a preset data value, historical charging data, and the specification parameters of the charger. The preset data value is pre-set and stored in the memory or the cloud management platform for the processor to obtain and use; the historical charging data can be the historical data recorded by the charging pile each time the vehicle charges, and the historical data can be stored in the memory or the cloud management platform for the processor to obtain and use; the specification parameters of the charger can be obtained by prompting the user to manually input during charging, or by identifying the text on the charger, etc., without specific limitation. The specification parameters of the charger can also be obtained by the processor for subsequent analysis and processing.

[0060] In one embodiment, step S200 includes steps S210 - S220:

[0061] S210. Determine the temperature increase value corresponding to different charging stages according to the charging information.

[0062] Such as Figure 3As shown, optionally, the charging stage includes a constant current charging stage 1, a constant voltage charging stage 2, and a trickle charging stage 3. In the embodiments of the present application, the temperature increase values corresponding to the constant current charging stage 1, the constant voltage charging stage 2, and the trickle charging stage 3 are respectively denoted as ΔT1, ΔT2, and ΔT3.

[0063] It should be noted that when the charging stage is the constant current charging stage 1, usually when the remaining battery power is low, the charger quickly replenishes energy to the battery with a relatively large constant current. Therefore, there will be a relatively high temperature rise around the charging pile and the charger at this stage. At this time, a preset data value is set for the constant current charging stage 1 and denoted as ΔT 1 , for example, ΔT 1 = 10K; when the charging stage is the constant voltage charging stage 2, the charging current will slowly decrease. The temperature rise around the charging pile and the charger at this stage is slightly smaller than that in the constant current charging stage 1. At this time, a preset data value is set for the constant voltage charging stage 2 and denoted as ΔT 2 , ΔT 2 is less than ΔT 1 , for example, ΔT 2 = 5K; when the charging stage is the trickle charging stage 3, the remaining battery power is already in a relatively high state, and the charging current tends to be stable (the degree of decrease is less than that in the constant voltage charging stage 2). The temperature rise at this stage is relatively smaller than that in the constant voltage charging stage 2. A preset data value is set for the trickle charging stage 3 and denoted as ΔT 3 , ΔT 3 is less than ΔT 2 , for example, ΔT 3 = 0.1K or ΔT 3 = 0.

[0064] Optionally, S210 includes one of steps S2101, S2102, and S2103:

[0065] S2101. Determine the temperature increase values corresponding to different charging stages according to the preset data values corresponding to different charging stages.

[0066] In one implementation, in order to minimize the data processing amount of the processor, the management personnel of the charging pile can, in advance, based on the same type of charging piles, historical charging data, and / or human experience, preset the corresponding preset data values for different charging stages as the temperature increase values corresponding to different charging stages. For example, based on the above-mentioned ΔT 1 , ΔT 2 , ΔT 3 , which are respectively used as the temperature increase values corresponding to the constant current charging stage, the constant voltage charging stage, and the trickle charging stage, namely ΔT1, ΔT2, and ΔT3.

[0067] S2102. Analyze the temperature change of the vehicle during different charging stages based on the historical charging data of the vehicle, and determine the temperature increase value corresponding to different charging stages.

[0068] Optionally, due to the chargers of different vehicles or other factors, the temperature rise corresponding to different charging stages during charging of different vehicles may also vary. Therefore, in order to more accurately determine the temperature increase value, the historical charging data of the vehicle can be analyzed, and this method is also applicable to the situation where the charger specification parameters of the vehicle cannot be obtained.

[0069] For example, assume that the historical charging data includes the historical data of vehicle A, vehicle B, and vehicle C charging. In the first method, by analyzing the historical data of vehicle A, vehicle B, and vehicle C, analyze the temperature change during different charging stages, so as to determine the average temperature rise corresponding to different charging stages. Then, when a vehicle is charging later, use the average temperature rise corresponding to different charging stages as the temperature increase value corresponding to different charging stages. Or, in the second method, by analyzing the historical data of vehicle A, vehicle B, and vehicle C respectively, the average temperature rise corresponding to different charging stages for each of them is determined, so as to determine the average temperature rise of vehicle A, vehicle B, and vehicle C corresponding to the constant current charging stage, constant voltage charging stage, and trickle charging stage respectively. When the vehicle is charging, if it is identified as vehicle A, determine the average temperature rise of vehicle A corresponding to different charging stages as the temperature increase value corresponding to different charging stages. If it is identified as vehicle B, determine the average temperature rise of vehicle B corresponding to different charging stages as the temperature increase value corresponding to different charging stages. If the vehicle cannot be identified or it is vehicle D charging at this charging pile for the first time, at this time, the first method can be used, and use the average temperature rise corresponding to different charging stages as the temperature increase value corresponding to different charging stages. After charging is completed, use the charging data of vehicle D as historical data for the next analysis. Therefore, finally, the temperature increase values corresponding to the constant current charging stage, constant voltage charging stage, and trickle charging stage, namely ΔT1, ΔT2, and ΔT3, can also be determined.

[0070] S2103. Query the target charging data of charging with a charger having the same specification parameters according to the specification parameters of the charger, and determine the temperature increase value corresponding to different charging stages according to the target charging data.

[0071] Optionally, when the charging pile can obtain the specification parameters of the charger, when the vehicle needs to be charged, obtain the specification parameters of the vehicle charger. Then, the processor can search for the target charging data of chargers with the same current specification parameters as the current ones from the historical data of this charging pile, or from other charging piles or the Internet for charging. Then, by analyzing the target charging data, for example, the principle of the first method in S2102 above can be used to analyze the temperature change of the target charging data in different charging stages, so as to determine the average temperature rise corresponding to different charging stages. Then, take the average temperature rise corresponding to different charging stages as the temperature rise value corresponding to different charging stages, that is, determine the temperature rise values corresponding to the constant current charging stage, the constant voltage charging stage, and the trickle charging stage: ΔT1, ΔT2, ΔT3.

[0072] S220. Determine the temperature alarm thresholds corresponding to different charging stages according to the temperature rise values corresponding to different charging stages and the ambient temperature.

[0073] Optionally, it includes steps S2201 - S2203:

[0074] S2201. Determine the temperature alarm threshold corresponding to the constant current charging stage according to the temperature rise value corresponding to the constant current charging stage, the ambient temperature, and the first sum value of the preset buffer temperature.

[0075] It should be noted that the ambient temperature is denoted as T0. In the embodiment of the present application, a preset buffer temperature Tx is set to prevent the temperature from jumping repeatedly and play a filtering role. The specific value can be set based on the actual situation and is not specifically limited.

[0076] Specifically, the temperature alarm threshold T1 corresponding to the constant current charging stage:

[0077] T1 = T0 + ΔT1 + Tx

[0078] S2202. Determine the temperature alarm threshold corresponding to the constant voltage charging stage according to the temperature rise value corresponding to the constant voltage charging stage, the ambient temperature, and the second sum value of the preset buffer temperature.

[0079] Specifically, the temperature alarm threshold T2 corresponding to the constant voltage charging stage:

[0080] T2 = T0 + ΔT2 + Tx

[0081] S2203. Determine the temperature alarm threshold corresponding to the trickle charging stage according to the temperature rise value corresponding to the trickle charging stage, the ambient temperature, and the third sum value of the preset buffer temperature.

[0082] Specifically, the temperature alarm threshold T3 corresponding to the trickle charging stage:

[0083] T3 = T0 + ΔT3 + Tx

[0084] In one embodiment, during the vehicle charging process, the charging pile can collect the battery charging parameters and the regional temperature of the area where the vehicle is located in real time. The battery charging parameters can be: 1) the percentage of the remaining battery power obtained by reading the battery management system BMS; 2) obtaining a plurality of charging current values within a preset time length, and the preset time length is set based on the actual situation.

[0085] In one embodiment, in step S300, determining the current charging stage of the vehicle according to the battery charging parameters may include step S310 or S320:

[0086] S310. Read the battery management system to obtain the percentage of the remaining battery power. When the percentage of the remaining battery power is less than the first ratio threshold, determine that the current charging stage of the vehicle is the constant current charging stage. When the percentage of the remaining battery power is greater than or equal to the first ratio threshold and less than the second ratio threshold, determine that the current charging stage of the vehicle is the constant voltage charging stage. When the percentage of the remaining battery power is greater than or equal to the second ratio threshold, determine that the current charging stage of the vehicle is the trickle charging stage.

[0087] Optionally, read the battery management system BMS to obtain the percentage of the remaining battery power, and then based on the preset first ratio threshold and second ratio threshold, determine the possible current charging stage.

[0088] Specifically, when the percentage of the remaining battery power is less than the first ratio threshold, it is determined that the current charging stage of the vehicle is the constant current charging stage. When the percentage of the remaining battery power is greater than or equal to the first ratio threshold and less than the second ratio threshold, it is determined that the current charging stage of the vehicle is the constant voltage charging stage. In addition, when the percentage of the remaining battery power is greater than or equal to the second ratio threshold, it is determined that the current charging stage of the vehicle is the trickle charging stage, so as to determine the current charging stage of the vehicle based on the information of the battery management system BMS.

[0089] S320. Obtain a plurality of charging current values within a preset time length, and determine the change value of the charging current according to the plurality of charging current values; when any one of the charging current values is greater than the current threshold and the change value of the charging current is less than the change threshold, determine that the current charging stage of the vehicle is the constant current charging stage; when the change value of the charging current is greater than the change threshold, determine that the current charging stage of the vehicle is the constant voltage charging stage; when any one of the charging current values is less than the current threshold and the change value of the charging current is less than the change threshold, determine that the current charging stage of the vehicle is the trickle charging stage.

[0090] Optionally, in some cases where the remaining battery percentage cannot be obtained, several charging current values within a preset time length can also be analyzed, and the current charging stage of the vehicle can be determined based on the change of the charging current values in different charging stages.

[0091] Specifically, according to several charging current values, the change value of the charging current is determined. For example, the absolute value of the difference between the first obtained charging current value and the last obtained charging current value is determined as the change value of the charging current. At the same time, in the embodiments of the present application, since the magnitudes of the charging current values corresponding to different charging stages are different, usually the constant current charging stage > the constant voltage charging stage > the trickle charging stage. Therefore, a current threshold corresponding to the constant current charging stage can be set. When the charging current value is greater than the current threshold, the current charging stage is very likely to be the constant current charging stage, and the current threshold can be set manually, analyzed based on historical charging data, or analyzed based on the specification parameters of the charger, and the principle is similar to S210, with the only difference being that the average current value corresponding to the constant current charging stage is determined as the current threshold; similarly, the change threshold is one of being set manually, analyzed based on historical charging data, or analyzed based on the specification parameters of the charger, which will not be elaborated here.

[0092] In the embodiments of the present application, when any charging current value is greater than the current threshold and the change value of the charging current is less than the change threshold, it is determined that the current charging stage of the vehicle is the constant current charging stage; when the change value of the charging current is greater than the change threshold, it is determined that the current charging stage of the vehicle is the constant voltage charging stage; and when any charging current value is less than the current threshold and the change value of the charging current is less than the change threshold, it is determined that the current charging stage of the vehicle is the trickle charging stage. Finally, it can be determined which stage the current charging stage of the vehicle is, which is convenient for subsequent targeted monitoring.

[0093] In one implementation, step S400 includes steps S410 - S440:

[0094] S410. When the regional temperature is greater than the temperature warning threshold corresponding to the current charging stage, determine the overflow temperature value of the regional temperature relative to the temperature warning threshold corresponding to the current charging stage.

[0095] Optionally, when the regional temperature is greater than the temperature warning threshold corresponding to the current charging stage, calculate the difference between the regional temperature and the temperature warning threshold corresponding to the current charging stage, so as to determine the overflow temperature value of the regional temperature relative to the temperature warning threshold corresponding to the current charging stage.

[0096] S420. When the overflow temperature value is less than the first temperature threshold, execute the first-level warning rule and send a warning message to the background management personnel through the cloud management platform.

[0097] Optionally, assume that the first temperature threshold is 5°C. When the overflow temperature value is less than the first temperature threshold of 5°C, the processor of the charging pile executes the first-level warning rule, sends a command to the cloud management platform, and sends a warning message to the terminal of the back-end management personnel through the cloud management platform, such as "There is a first-level abnormality in the charging of XXX charging pile. Please pay appropriate attention", to give an early warning and avoid subsequent fires.

[0098] S430. When the overflow temperature value is greater than or equal to the first temperature threshold and less than the second temperature threshold, execute the second-level warning rule, and send an alarm message to the engineering personnel in the area where the vehicle is located through the cloud management platform.

[0099] Optionally, assume that the second temperature threshold is 10°C and the overflow temperature value is 8°C, which is between 5°C and 10°C. At this time, the processor of the charging pile executes the second-level warning rule, sends a command to the cloud management platform, and sends an alarm message to the terminal of the engineering personnel in the area where the vehicle is located through the cloud management platform, because the engineering personnel in the area where the vehicle is located can respond quickly compared to the back-end management personnel. For example, the alarm message is "There is a second-level abnormality in the charging of XXX charging pile. Please go to confirm immediately".

[0100] S440. When the overflow temperature value is greater than or equal to the second temperature threshold, execute the third-level warning rule, forcibly end the vehicle charging, and send a warning message to the back-end management personnel through the cloud management platform and / or send an alarm message to the engineering personnel in the area where the vehicle is located through the cloud management platform.

[0101] Optionally, assume that the overflow temperature value is 15°C. At this time, the overflow temperature value of 15°C is greater than the second temperature threshold of 10°C. At this time, the processor of the charging pile executes the third-level warning rule, directly forcibly ends the vehicle charging, first ensures safety, and at the same time sends a command to the cloud management platform, and sends a warning message to the terminal of the back-end management personnel through the cloud management platform and / or sends an alarm message to the terminal of the engineering personnel in the area where the vehicle is located through the cloud management platform. For example, the alarm message is "There is a third-level abnormality in the charging of XXX charging pile. Please quickly confirm and handle".

[0102] In the embodiment of the present application, through the three-party linkage of the thermal imaging camera, the charging pile, and the cloud management platform, effective remote charging monitoring is realized, and rapid response can be achieved when charging abnormalities occur; at the same time, considering the environmental temperature factor and the temperature rise characteristics in different charging stages, the temperature warning thresholds in different charging stages are dynamically adjusted. Compared with the fixed threshold method, the accuracy is higher, which is beneficial to reducing the false alarm rate, improving the charging monitoring accuracy of the entire vehicle charging process, with high applicability and wide application range. The fire recognition and monitoring time of the entire monitoring process can be controlled within 10 seconds, and the false alarm rate is reduced to less than 2%.

[0103] Refer to Figure 4, which shows a structural block diagram of a vehicle charging monitoring system according to an embodiment of the present application. The system may include:

[0104] An acquisition module, configured to acquire the ambient temperature and charging information;

[0105] A first determination module, configured to determine temperature warning thresholds corresponding to different charging stages according to the ambient temperature and charging information;

[0106] A second determination module, configured to, during the vehicle charging process, collect battery charging parameters and the regional temperature of the area where the vehicle is located in real time, and determine the current charging stage of the vehicle according to the battery charging parameters;

[0107] A monitoring module, configured to perform monitoring according to the temperature warning threshold corresponding to the current charging stage and the regional temperature.

[0108] For the functions of the modules in the system according to the embodiment of the present application, reference may be made to the corresponding descriptions in the above method, which will not be elaborated here.

[0109] Refer to Figure 5 , which shows a structural block diagram of a charging pile according to an embodiment of the present application. The charging pile includes: a memory 310 and a processor 320. Instructions that can run on the processor 320 are stored in the memory 310. The processor 320 loads and executes the instructions to implement the vehicle charging monitoring method in the above embodiment. Among them, the number of the memory 310 and the processor 320 may be one or more.

[0110] In one implementation manner, the charging pile further includes a communication interface 330, configured to communicate with external devices (such as a cloud management platform) for data interaction and transmission. If the memory 310, the processor 320, and the communication interface 330 are implemented independently, the memory 310, the processor 320, and the communication interface 330 may be connected to each other through a bus and complete communication with each other.

[0111] Optionally, in specific implementation, if the memory 310, the processor 320, and the communication interface 330 are integrated on a chip, the memory 310, the processor 320, and the communication interface 330 may complete communication with each other through an internal interface.

[0112] The embodiment of the present application provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the vehicle charging monitoring method provided in the above embodiment is implemented.

[0113] The embodiment of the present application further provides a chip, which includes a processor, configured to call and run instructions stored in a memory from the memory, so that a communication device installed with the chip executes the method provided in the embodiment of the present application.

[0114] An embodiment of the present application further provides a chip, including: an input interface, an output interface, a processor, and a memory. The input interface, the output interface, the processor, and the memory are connected through an internal connection path. The processor is configured to execute the code in the memory. When the code is executed, the processor is configured to execute the method provided by the embodiment of the application.

[0115] It should be understood that the above-mentioned processor may be a central processing unit (CPU), or may also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc. It is worth noting that the processor may be a processor that supports the advanced RISC machines (ARM) architecture.

[0116] Further, optionally, the above-mentioned memory may include a read-only memory and a random access memory, and may further include a non-volatile random access memory. The memory may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may include a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may include a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available. For example, static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct rambus random access memory (DR RAM).

[0117] In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions according to the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.

[0118] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0119] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0120] Any process or method description represented in the flowchart or described in other ways herein may be understood to represent a module, segment, or portion of code including one or more executable instructions for implementing a specific logical function or process. And the scope of the preferred embodiments of the present application includes additional implementations, where the functions may be executed in a substantially simultaneous manner or in a reverse order according to the involved functions, rather than in the order shown or discussed.

[0121] The logic and / or steps represented in the flowchart or described in other ways herein, for example, may be considered as a sequenced list of executable instructions for implementing a logical function and may be specifically implemented in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other systems that can fetch and execute instructions from the instruction execution system, apparatus, or device).

[0122] It should be understood that each part of the present application can be implemented by hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. All or part of the steps of the above method embodiments can be completed by a program instructing relevant hardware, and the program can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiments.

[0123] In addition, each functional unit in various embodiments of the present application may be integrated into a processing module, or each unit may exist physically alone, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the above-mentioned integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium. The storage medium may be a read-only memory, a magnetic disk, an optical disc, or the like.

[0124] As described above, the foregoing are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily conceive of various changes or substitutions within the technical scope disclosed in the present application, and these should all be covered by the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A vehicle charging monitoring method, characterized in that: include: Get ambient temperature and charging information; Determining temperature alarm thresholds corresponding to different charging stages according to the ambient temperature and the charging information; During the vehicle charging process, the battery charging parameters and the regional temperature of the area where the vehicle is located are collected in real time, and the current charging stage of the vehicle is determined according to the battery charging parameters; Monitoring is performed according to the temperature alarm threshold corresponding to the current charging stage and the regional temperature.

2. The vehicle charging monitoring method according to claim 1, characterized in that: The determining, according to the ambient temperature and the charging information, temperature warning thresholds corresponding to different charging stages includes: Determining temperature rise values ​​corresponding to different charging stages according to the charging information; The temperature alarm thresholds corresponding to the different charging stages are determined according to the temperature rise values ​​corresponding to the different charging stages and the ambient temperature.

3. The vehicle charging monitoring method according to claim 2, characterized in that: Determining the temperature rise values ​​corresponding to different charging stages according to the charging information includes: Determine the temperature rise values ​​corresponding to the different charging stages according to the preset data values ​​corresponding to the different charging stages; Alternatively, based on the historical charging data of the vehicle, the temperature changes of the vehicle at different charging stages are analyzed to determine the temperature increase values ​​corresponding to the different charging stages; Alternatively, according to the specification parameters of the charger, query the target charging data of charging using the charger with the same specification parameters, and determine the temperature rise values ​​corresponding to different charging stages according to the target charging data; The charging information includes one of a preset data value, historical charging data and a specification parameter of the charger.

4. The vehicle charging monitoring method according to claim 2, characterized in that: The determining, according to the temperature rise values ​​corresponding to the different charging stages and the ambient temperature, the temperature alarm thresholds corresponding to the different charging stages comprises: Determine a temperature alarm threshold corresponding to the constant current charging stage according to a temperature rise value corresponding to the constant current charging stage, the ambient temperature, and a first sum of a preset buffer temperature; Determining a temperature alarm threshold corresponding to the constant voltage charging stage according to the temperature rise value corresponding to the constant voltage charging stage, the ambient temperature, and a second sum of the preset buffer temperature; The temperature alarm threshold corresponding to the trickle charging stage is determined according to the temperature rise value corresponding to the trickle charging stage, the ambient temperature and a third sum of the preset buffer temperature.

5. The vehicle charging monitoring method according to claim 2, characterized in that: Determining the current charging stage of the vehicle according to the battery charging parameters includes: The battery management system is read to obtain the remaining battery power percentage. When the remaining power percentage is less than a first proportional threshold, it is determined that the current charging stage of the vehicle is a constant current charging stage. When the remaining power percentage is greater than or equal to the first proportional threshold and less than a second proportional threshold, it is determined that the current charging stage of the vehicle is a constant voltage charging stage. When the remaining power percentage is greater than or equal to the second proportional threshold, it is determined that the current charging stage of the vehicle is a trickle charging stage.

6. The vehicle charging monitoring method according to claim 2, characterized in that: Determining the current charging stage of the vehicle according to the battery charging parameters includes: Acquire a plurality of charging current values ​​within a preset time length, and determine a change value of the charging current according to the plurality of charging current values; When any charging current value is greater than the current threshold and the change value of the charging current is less than the change threshold, it is determined that the current charging stage of the vehicle is a constant current charging stage; When the change value of the charging current is greater than the change threshold, it is determined that the current charging stage of the vehicle is a constant voltage charging stage; When any charging current value is less than the current threshold and the change value of the charging current is less than the change threshold, it is determined that the current charging stage of the vehicle is the trickle charging stage.

7. The vehicle charging monitoring method according to any one of claims 1 to 6, characterized in that: The monitoring according to the temperature alarm threshold corresponding to the current charging stage and the regional temperature includes: When the temperature of the area is greater than the temperature alarm threshold corresponding to the current charging stage, determining an overflow temperature value of the temperature of the area relative to the temperature alarm threshold corresponding to the current charging stage; When the overflow temperature value is less than the first temperature threshold, the first-level warning rule is executed, and a warning message is sent to the back-end management personnel through the cloud management platform; When the overflow temperature value is greater than or equal to the first temperature threshold and less than the second temperature threshold, the second level warning rule is executed, and an alarm message is sent to the engineering personnel in the area where the vehicle is located through the cloud management platform; When the overflow temperature value is greater than or equal to the second temperature threshold, the third level warning rule is executed, the vehicle charging is forcibly terminated, and a warning message is sent to the backend management personnel through the cloud management platform and / or an alarm message is sent to the engineering personnel in the area where the vehicle is located through the cloud management platform.

8. A vehicle charging monitoring system, characterized in that: include: Acquisition module, used to obtain ambient temperature and charging information; A first determination module, configured to determine temperature alarm thresholds corresponding to different charging stages according to the ambient temperature and the charging information; A second determination module is used to collect battery charging parameters and a regional temperature of an area where the vehicle is located in real time during the charging process of the vehicle, and determine a current charging stage of the vehicle according to the battery charging parameters; The monitoring module is used to monitor according to the temperature alarm threshold corresponding to the current charging stage and the regional temperature.

9. A charging pile, characterized in that: include: A processor and a memory, wherein the memory stores instructions, and the instructions are loaded and executed by the processor to implement the method according to any one of claims 1 to 7.

10. A computer-readable storage medium, wherein a computer program is stored in the computer-readable storage medium, and when the computer program is executed, the method according to any one of claims 1 to 7 is implemented.

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