Charging control method of charging pile based on communication supervision

Abstract

The present invention relates to the technical field of charging pile charging control, and is used to solve the problem that unreasonable charging of a charging pile causes damage to a rechargeable battery, and in particular to a charging pile charging control method based on communication supervision; the present invention analyzes the actual charging performance of a target charging pile and the state risk of a rechargeable battery, so as to perform reasonable and targeted management of the target charging pile according to information feedback, so as to ensure the charging stability of the target charging pile and the charging safety of the rechargeable battery, and performs charging adjustment feedback analysis on basic data in a progressive manner, and then reasonably adjusts the charging power of the target charging pile according to the information feedback, so as to reduce the charging risk during the charging process of the rechargeable battery, and simultaneously performs analysis from the perspective of charging rate, so as to manage the target charging pile according to the feedback, which helps to improve the healthy operation of the target charging pile, and helps to reduce the damage of the target charging pile to the rechargeable battery.

Description

Technical Field

[0001] The present invention relates to the technical field of charging pile charging control, and in particular to a charging pile charging control method based on communication supervision. Background Art

[0002] With the continuous development of new energy, charging piles are also being continuously added. The function of charging piles is similar to that of gas pumps at gas stations. They can be fixed on the ground or walls, or installed in parking lots or charging stations in public buildings and residential areas to charge electric vehicles. Charging piles, also known as electric vehicle charging stations or electric vehicle power supply equipment, are devices that provide electrical energy to electric vehicles, enabling them to store enough electricity to support their operation.

[0003] However, in the prior art, it is impossible to safely monitor the real-time charging status of the charging pile, which leads to an increased risk of charging stability of the charging pile, which is not conducive to timely management and control of the charging pile, and it is impossible to reasonably adjust the charging power of the charging pile according to the charging status of the rechargeable battery itself, thereby increasing the abnormal risk of the rechargeable battery, and it is impossible to safely monitor the charging pile from the perspective of charging rate, which leads to an increased risk of the impact of the charging pile on the rechargeable battery.

[0004] In view of the above technical defects, a solution is now proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a charging control method for a charging pile based on communication supervision to solve the above-mentioned technical defects. The present invention analyzes the actual charging performance of the target charging pile and the state risk of the rechargeable battery, so as to reasonably and specifically manage the target charging pile according to the information feedback to ensure the charging stability of the target charging pile and the charging safety of the rechargeable battery. The charging adjustment feedback analysis is performed on the basic data in a progressive manner, and then the charging power of the target charging pile is reasonably adjusted according to the information feedback to reduce the charging risk during the charging process of the rechargeable battery. At the same time, it is analyzed from the perspective of charging rate so that the target charging pile can be managed according to the feedback, which helps to improve the healthy operation of the target charging pile and help reduce the damage of the target charging pile to the rechargeable battery.

[0006] The purpose of the present invention can be achieved by the following technical solution: A charging pile charging control method based on communication supervision comprises the following steps:

[0007] Step 1: Collect charging data of the target charging pile, and perform real-time charging deviation risk analysis on the charging data. Compare and analyze the obtained charging deviation index. If a stable signal is obtained, proceed to step 2 and step 4. If a feedback instruction is obtained, further compare and analyze the parameter deviation value. If an alarm signal is obtained, feedback management is provided.

[0008] Step 2: Collect the charging performance data of the rechargeable battery through information feedback, and perform charging status safety supervision analysis on the charging performance data, compare and analyze the obtained charging temperature value and internal pressure floating value, and if a risk signal is obtained, feedback management is performed, and if a progressive signal is obtained, proceed to step 3;

[0009] Step 3: Collect basic data of the rechargeable battery in a progressive manner, perform charging adjustment feedback analysis on the basic data, and compare and analyze the obtained injury risk assessment coefficient D. If a normal signal is obtained, proceed to step 4. If a charging warning signal is obtained, feedback management is performed;

[0010] Step 4: When stable signals and normal signals are generated, the actual charging rate characteristic curve of the target charging pile is collected, and a charging health deviation risk analysis is performed. The obtained charging out-of-control risk index is compared and analyzed. If an alarm signal is obtained, feedback management is performed.

[0011] Preferably, the real-time charging deviation risk analysis process is as follows:

[0012] The charging pile corresponding to the generated charging request instruction is collected and set as the target charging pile. The operating time period of the target charging pile is collected and set as the time threshold. The charging data of the target charging pile within the time threshold is obtained. The charging data includes the charging current and the charging power. The charging data is compared and analyzed with the preset standard charging data. The number of deviations of the charging data from the preset standard charging data is obtained and set as the charging deviation index. The charging deviation index is compared and analyzed with the preset charging deviation index threshold value stored in the internal input:

[0013] If the charging deviation index is less than or equal to a preset charging deviation index threshold, a stabilization signal is generated;

[0014] If the charging deviation index is greater than a preset charging deviation index threshold, a feedback instruction is generated.

[0015] Preferably, when generating a feedback instruction, the portion of the charging data corresponding to the charging deviation index that deviates from the preset standard charging data is obtained and set as the parameter deviation value, and the parameter deviation value is compared and analyzed with the preset parameter deviation value threshold value recorded and stored internally:

[0016] If the ratio between the parameter deviation value and the preset parameter deviation value threshold is less than 1, no signal is generated;

[0017] If the ratio between the parameter deviation value and the preset parameter deviation value threshold is greater than or equal to 1, an alarm signal is generated.

[0018] Preferably, the charging status safety supervision analysis process is as follows:

[0019] The charging performance data of the rechargeable battery is obtained. The charging performance data includes the charging temperature value and the internal pressure change value, and the charging temperature value and the internal pressure change value are compared and analyzed:

[0020] If the charging temperature value is greater than or equal to the preset charging temperature value threshold, or the internal pressure floating value is greater than or equal to the preset internal pressure floating value threshold, a risk signal is generated; if the charging temperature value is less than the preset charging temperature value threshold, and the internal pressure floating value is less than the preset internal pressure floating value threshold, a progressive signal is generated;

[0021] The internal pressure fluctuation value indicates the difference between the internal pressure of the rechargeable battery and the initial internal pressure.

[0022] Preferably, the charging adjustment feedback analysis process is as follows:

[0023] Obtain the basic data of the rechargeable battery, including the actual energy storage capacity and overheating interval duration;

[0024] The overheat interval duration indicates the interval duration between the time when the difference between the charging temperature and the initial temperature of the rechargeable battery is greater than or equal to the preset threshold and the time when charging starts;

[0025] Obtain the historical charging record of the rechargeable battery, obtain the energy storage capacity of the rechargeable battery at the time of first charging from the historical charging record, and set it as the first charge energy storage capacity, obtain the value obtained by subtracting the actual energy storage capacity of the rechargeable battery at the current time from the first charge energy storage capacity, and set the value obtained by subtracting the actual energy storage capacity of the rechargeable battery at the current time from the first charge energy storage capacity as the capacity decay value, and at the same time obtain the difference between the first charge time and the current time, and set the difference between the time of being put into use and the current time as the operation cycle, and set the ratio between the capacity decay value and the operation cycle as the capacity decay index;

[0026] The total number of charging times at the same current charging power is obtained from the historical charging records, and the proportion of the number of times the overheating interval duration is greater than the preset threshold in the total number of charging times is obtained, and it is set as the overheating risk index.

[0027] Preferably, the capacity decay index and the overheating risk index are labeled RS and CS respectively, the capacity decay index RS and the overheating risk index CS are substituted into the formula to obtain the injury risk assessment coefficient D, and the injury risk assessment coefficient D is compared and analyzed with the preset injury risk assessment coefficient threshold value recorded and stored internally to obtain a normal signal and a charging warning signal.

[0028] Preferably, the charging health deviation risk analysis process is as follows:

[0029] The remaining power percentage of the rechargeable battery within the time threshold is obtained, and the remaining power percentage is compared and analyzed with the preset remaining power percentage range recorded and stored internally. If the remaining power percentage is within the preset remaining power percentage interval, a preset charging rate characteristic curve corresponding to the remaining power percentage within the preset remaining power percentage interval is obtained, and the preset charging rate characteristic curve is set as the planned charging rate characteristic curve;

[0030] The actual charging rate characteristic curve of the target charging pile within the time threshold is obtained, and the actual charging rate characteristic curve is overlapped and compared with the planned charging rate characteristic curve to obtain the difference value between the actual charging rate characteristic curve and the planned charging rate characteristic curve, and the difference value between the actual charging rate characteristic curve and the planned charging rate characteristic curve is set as the charging out-of-control risk index, and the charging out-of-control risk index is compared and analyzed with the preset charging out-of-control risk index threshold value entered and stored internally to obtain an alarm signal.

[0031] The beneficial effects of the present invention are as follows:

[0032] The present invention analyzes the actual charging performance of the target charging pile and the state risk of the rechargeable battery, so as to manage the target charging pile reasonably and specifically according to the information feedback, so as to ensure the charging stability of the target charging pile and the charging safety of the rechargeable battery, that is, to perform real-time charging deviation risk analysis on the charging data, so as to intuitively understand the charging state risk of the target charging pile according to the information feedback, so as to perform reasonable and targeted management and control, and to perform charging state safety supervision analysis on the charging performance data, so as to reduce the abnormal charging risk of the rechargeable battery, so as to understand the abnormal risk of the rechargeable battery in real time;

[0033] The present invention performs charging adjustment feedback analysis on basic data in a progressive manner, and then reasonably adjusts the charging power of the target charging pile according to the information feedback, so as to reduce the charging risk during the charging process of the rechargeable battery. At the same time, it analyzes from the perspective of charging rate, so as to manage the target charging pile according to the feedback, so as to ensure the charging safety and stability during the charging process of the target charging pile, and at the same time helps to improve the healthy operation of the target charging pile, and helps to reduce the damage of the target charging pile to the rechargeable battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The present invention will be further described below in conjunction with the accompanying drawings;

[0035] Figure 1 It is a reference diagram of the method of the present invention. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Embodiment 1

[0037] See also Figure 1 As shown, the present invention is a charging pile charging control method based on communication supervision, comprising the following steps:

[0038] Step 1: Collect charging data of the target charging pile, and perform real-time charging deviation risk analysis on the charging data. Compare and analyze the obtained charging deviation index. If a stable signal is obtained, proceed to step 2 and step 4. If a feedback instruction is obtained, further compare and analyze the parameter deviation value. If an alarm signal is obtained, feedback management is provided.

[0039] Step 2: Collect the charging performance data of the rechargeable battery through information feedback, and perform charging status safety supervision analysis on the charging performance data, compare and analyze the obtained charging temperature value and internal pressure floating value, and if a risk signal is obtained, feedback management is performed, and if a progressive signal is obtained, proceed to step 3;

[0040] Step 3: Collect basic data of the rechargeable battery in a progressive manner, perform charging adjustment feedback analysis on the basic data, and compare and analyze the obtained injury risk assessment coefficient D. If a normal signal is obtained, proceed to step 4. If a charging warning signal is obtained, feedback management is performed;

[0041] Step 4: When stable signals and normal signals are generated, the actual charging rate characteristic curve of the target charging pile is collected, and a charging health deviation risk analysis is performed. The obtained charging out-of-control risk index is compared and analyzed. If an alarm signal is obtained, feedback management is performed;

[0042] In the embodiment of the present invention, when charging the rechargeable battery, after the user selects the charging pile on the user end and clicks OK, a charging request instruction is generated so as to charge the rechargeable battery;

[0043] In the embodiment of the present invention, charging data of the target charging pile is collected, and the charging data is subjected to real-time charging deviation risk analysis. The specific real-time charging deviation risk analysis process is as follows:

[0044] The charging pile corresponding to the generated charging request instruction is collected and set as the target charging pile. The operating time period of the target charging pile is collected and set as the time threshold. The charging data of the target charging pile within the time threshold is obtained. The charging data includes charging current, charging power, etc. The charging data is compared and analyzed with the preset standard charging data. The number of charging data deviations from the preset standard charging data is obtained and set as the charging deviation index. The charging deviation index is compared and analyzed with the preset charging deviation index threshold value stored in the internal input:

[0045] If the charging deviation index is less than or equal to a preset charging deviation index threshold, a stabilization signal is generated;

[0046] If the charging deviation index is greater than the preset charging deviation index threshold, a feedback instruction is generated. When the feedback instruction is generated, the portion of the charging data corresponding to the charging deviation index that deviates from the preset standard charging data is obtained and set as the parameter deviation value. The parameter deviation value is compared and analyzed with the preset parameter deviation value threshold that is stored and entered internally:

[0047] If the ratio between the parameter deviation value and the preset parameter deviation value threshold is less than 1, no signal is generated;

[0048] If the ratio between the parameter deviation value and the preset parameter deviation value threshold is greater than or equal to 1, an alarm signal is generated. When the alarm signal is generated, the preset warning operation corresponding to the alarm signal is immediately performed, so that the charging status risk of the target charging pile can be intuitively understood according to the information feedback, so as to carry out reasonable and targeted management and control to ensure the charging safety and stability of the target charging pile;

[0049] In the embodiment of the present invention, when a stable signal is generated, the charging performance data of the rechargeable battery is collected by means of information feedback, and the charging performance data is subjected to charging state safety supervision analysis. The specific charging state safety supervision analysis process is as follows:

[0050] The charging performance data of the rechargeable battery is obtained. The charging performance data includes the charging temperature value and the internal pressure change value, and the charging temperature value and the internal pressure change value are compared and analyzed:

[0051] If the charging temperature value is greater than or equal to the preset charging temperature value threshold, or the internal pressure floating value is greater than or equal to the preset internal pressure floating value threshold, a risk signal is generated. When the risk signal is generated, a preset warning operation corresponding to the risk signal is immediately performed to reduce the abnormal charging risk of the rechargeable battery, so as to understand the abnormal risk of the rechargeable battery in real time;

[0052] If the charging temperature value is less than the preset charging temperature value threshold, and the internal pressure floating value is less than the preset internal pressure floating value threshold, a progressive signal is generated;

[0053] In the embodiment of the present invention, the internal pressure floating value represents the difference between the internal pressure of the rechargeable battery and the initial internal pressure. Embodiment 2

[0054] When the progressive signal is generated, the basic data of the rechargeable battery is collected in a progressive manner, and the charging adjustment feedback analysis is performed on the basic data. The specific charging adjustment feedback analysis process is as follows:

[0055] Obtain the basic data of the rechargeable battery, including actual energy storage capacity, overheating interval duration, etc.

[0056] In the embodiment of the present invention, the overheating interval duration refers to the interval duration between the time when the difference between the charging temperature and the initial temperature of the rechargeable battery is greater than or equal to the preset threshold and the time when charging starts;

[0057] Obtain the historical charging record of the rechargeable battery, obtain the energy storage capacity of the rechargeable battery at the time of first charging from the historical charging record, and set it as the first charge energy storage capacity, obtain the value obtained by subtracting the actual energy storage capacity of the rechargeable battery at the current time from the first charge energy storage capacity, and set the value obtained by subtracting the actual energy storage capacity of the rechargeable battery at the current time from the first charge energy storage capacity as the capacity decay value, and at the same time obtain the difference between the first charge time and the current time, and set the difference between the time of commissioning and the current time as the operation cycle, and set the ratio between the capacity decay value and the operation cycle as the capacity decay index. It should be noted that the larger the value of the capacity decay index, the greater the risk of abnormal high-power charging of the rechargeable battery;

[0058] The total number of charging times at the same current charging power is obtained from the historical charging records, and the proportion of the number of times in which the overheating interval duration is greater than the preset threshold value is obtained, and it is set as the overheating risk index. It should be noted that the larger the value of the overheating risk index, the greater the risk of abnormal high-power charging of the rechargeable battery;

[0059] The capacity decay index and overheating risk index are labeled RS and CS respectively. Substitute the capacity decay index RS and overheating risk index CS into the formula The injury risk assessment coefficient is obtained, where a1 and a2 are the preset proportional factor coefficients of the capacity decay index RS and the overheating risk index CS respectively. The proportional factor coefficient is used to correct the deviation of various parameters in the formula calculation process, so as to make the calculation result more accurate. a3 is the preset correction factor coefficient. a1, a2 and a3 are all greater than zero. D is the injury risk assessment coefficient. The injury risk assessment coefficient D is compared with the preset injury risk assessment coefficient threshold value stored in the internal input:

[0060] If the ratio between the injury risk assessment coefficient D and the preset injury risk assessment coefficient threshold is less than 1, a normal signal is generated;

[0061] If the ratio between the injury risk assessment coefficient D and the preset injury risk assessment coefficient threshold is greater than or equal to 1, a charging warning signal is generated. When the charging warning signal is generated, the edited information is sent to the user end. If the user end clicks that adjustment is required, the preset warning operation corresponding to the charging warning signal is immediately performed. If the user end clicks that adjustment is not required, no operation is performed. Then, the charging power of the target charging pile is reasonably adjusted according to the information feedback to reduce the charging risk during the charging process of the rechargeable battery.

[0062] When stable signals and normal signals are generated, the actual charging rate characteristic curve of the target charging pile is collected, and a charging health deviation risk analysis is performed. The specific charging health deviation risk analysis process is as follows:

[0063] The remaining power percentage of the rechargeable battery within the time threshold is obtained, and the remaining power percentage is compared and analyzed with the preset remaining power percentage range recorded and stored internally. If the remaining power percentage is within the preset remaining power percentage interval, a preset charging rate characteristic curve corresponding to the remaining power percentage within the preset remaining power percentage interval is obtained, and the preset charging rate characteristic curve is set as the planned charging rate characteristic curve;

[0064] It should be noted that the power percentage of the rechargeable battery is divided into several preset remaining power percentage intervals. If the remaining power percentage is within a certain interval of the preset remaining power percentage intervals, a pre-set charging rate characteristic curve of the corresponding area is obtained, so that the rechargeable battery can be charged according to the charging rate characteristic curve to ensure the safety and charging stability of the target charging pile during charging.

[0065] The actual charging rate characteristic curve of the target charging pile within the time threshold is obtained, and the actual charging rate characteristic curve is overlapped and compared with the planned charging rate characteristic curve to obtain the difference between the actual charging rate characteristic curve and the planned charging rate characteristic curve, and the difference between the actual charging rate characteristic curve and the planned charging rate characteristic curve is set as the charging out-of-control risk index, and the charging out-of-control risk index is compared and analyzed with the preset charging out-of-control risk index threshold value stored in the internal input:

[0066] If the ratio between the charging out-of-control risk index and the preset charging out-of-control risk index threshold is less than 1, no signal is generated;

[0067] If the ratio between the charging out-of-control risk index and the preset charging out-of-control risk index threshold is greater than or equal to 1, an alarm signal is generated. When the alarm signal is generated, the preset early warning operation corresponding to the alarm signal is immediately performed, so as to reasonably and specifically manage the target charging pile according to the feedback, so as to ensure the charging safety and stability of the target charging pile during the charging process, and at the same time help to improve the healthy operation of the target charging pile, and help to reduce the damage of the target charging pile to the rechargeable battery;

[0068] In summary, the present invention analyzes the actual charging performance of the target charging pile and the state risk of the rechargeable battery, so as to reasonably and targetedly manage the target charging pile according to the information feedback, so as to ensure the charging stability of the target charging pile and the charging safety of the rechargeable battery, that is, to perform real-time charging deviation risk analysis on the charging data, so as to intuitively understand the charging state risk of the target charging pile according to the information feedback, so as to perform reasonable and targeted management and control, and to perform charging state safety supervision analysis on the charging performance data, so as to reduce the abnormal charging risk of the rechargeable battery, so as to understand the abnormal risk of the rechargeable battery in real time, and to perform charging adjustment feedback analysis on the basic data in a progressive manner, and then reasonably adjust the charging power of the target charging pile according to the information feedback, so as to reduce the charging risk during the charging process of the rechargeable battery, and analyze from the perspective of charging rate, so as to reasonably and targetedly manage the target charging pile according to the feedback, so as to ensure the charging safety and stability during the charging process of the target charging pile, and at the same time help to improve the healthy operation of the target charging pile, and help to reduce the damage of the target charging pile to the rechargeable battery.

[0069] The threshold is set to facilitate comparison. The size of the threshold depends on the amount of sample data and the number of bases set by technicians in this field for each group of sample data; as long as it does not affect the proportional relationship between the parameter and the quantized value.

[0070] The above formulas are obtained by collecting a large amount of data for software simulation and selecting a formula that is close to the actual value. The coefficients in the formula are set by technical personnel in this field according to actual conditions. The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited to this. Any technical personnel familiar with the technical field within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, make equivalent replacement or change, which should be covered within the protection scope of the present invention.

Claims

1. A charging pile charging control method based on communication supervision, characterized in that: The following steps are involved: Step 1: Collect charging data of the target charging pile, and perform real-time charging deviation risk analysis on the charging data. Compare and analyze the obtained charging deviation index. If a stable signal is obtained, proceed to step 2 and step 4. If a feedback instruction is obtained, further compare and analyze the parameter deviation value. If an alarm signal is obtained, feedback management is provided. Step 2: Collect the charging performance data of the rechargeable battery through information feedback, and perform charging status safety supervision analysis on the charging performance data, compare and analyze the obtained charging temperature value and internal pressure floating value, and if a risk signal is obtained, feedback management is performed, and if a progressive signal is obtained, proceed to step 3; Step 3: Collect basic data of the rechargeable battery in a progressive manner, perform charging adjustment feedback analysis on the basic data, and compare and analyze the obtained injury risk assessment coefficient D. If a normal signal is obtained, proceed to step 4. If a charging warning signal is obtained, feedback management is performed; Step 4: When stable signals and normal signals are generated, the actual charging rate characteristic curve of the target charging pile is collected, and a charging health deviation risk analysis is performed. The obtained charging out-of-control risk index is compared and analyzed. If an alarm signal is obtained, feedback management is performed; The real-time charging deviation risk analysis process is as follows: The charging pile corresponding to the generated charging request instruction is collected and set as the target charging pile. The operating time period of the target charging pile is collected and set as the time threshold. The charging data of the target charging pile within the time threshold is obtained. The charging data includes the charging current and the charging power. The charging data is compared and analyzed with the preset standard charging data. The number of deviations of the charging data from the preset standard charging data is obtained and set as the charging deviation index. The charging deviation index is compared and analyzed with the preset charging deviation index threshold value stored in the internal input: If the charging deviation index is less than or equal to a preset charging deviation index threshold, a stabilization signal is generated; If the charging deviation index is greater than a preset charging deviation index threshold, a feedback instruction is generated; When generating a feedback instruction, the portion of the charging data corresponding to the charging deviation index that deviates from the preset standard charging data is obtained and set as the parameter deviation value. The parameter deviation value is compared and analyzed with the preset parameter deviation value threshold value stored in the internal input: If the ratio between the parameter deviation value and the preset parameter deviation value threshold is less than 1, no signal is generated; If the ratio between the parameter deviation value and the preset parameter deviation value threshold is greater than or equal to 1, an alarm signal is generated; The charging state safety supervision analysis process is as follows: The charging performance data of the rechargeable battery is obtained. The charging performance data includes the charging temperature value and the internal pressure change value, and the charging temperature value and the internal pressure change value are compared and analyzed: If the charging temperature value is greater than or equal to the preset charging temperature value threshold, or the internal pressure floating value is greater than or equal to the preset internal pressure floating value threshold, a risk signal is generated; If the charging temperature value is less than the preset charging temperature value threshold, and the internal pressure floating value is less than the preset internal pressure floating value threshold, a progressive signal is generated; The internal pressure floating value represents the difference between the internal pressure of the rechargeable battery and the initial internal pressure; The charging adjustment feedback analysis process is as follows: Obtain the basic data of the rechargeable battery, including the actual energy storage capacity and overheating interval duration; The overheat interval duration indicates the interval duration between the time when the difference between the charging temperature and the initial temperature of the rechargeable battery is greater than or equal to the preset threshold and the time when charging starts; Obtain the historical charging record of the rechargeable battery, obtain the energy storage capacity of the rechargeable battery at the time of first charging from the historical charging record, and set it as the first charge energy storage capacity, obtain the value obtained by subtracting the actual energy storage capacity of the rechargeable battery at the current time from the first charge energy storage capacity, and set the value obtained by subtracting the actual energy storage capacity of the rechargeable battery at the current time from the first charge energy storage capacity as the capacity decay value, and at the same time obtain the difference between the first charge time and the current time, and set the difference between the time of being put into use and the current time as the operation cycle, and set the ratio between the capacity decay value and the operation cycle as the capacity decay index; The total number of current charging times with the same charging power is obtained from the historical charging records, and the proportion of the number of times in which the overheating interval duration is greater than the preset threshold value is obtained in the total number of charging times, and the proportion is set as the overheating risk index; The capacity decay index and the overheating risk index are labeled RS and CS respectively, and the capacity decay index RS and the overheating risk index CS are substituted into the formula to obtain the injury risk assessment coefficient D, and the injury risk assessment coefficient D is compared and analyzed with the preset injury risk assessment coefficient threshold value recorded and stored internally to obtain a normal signal or a charging warning signal; The charging health deviation risk analysis process is as follows: The remaining power percentage of the rechargeable battery within the time threshold is obtained, and the remaining power percentage is compared and analyzed with the preset remaining power percentage range recorded and stored internally. If the remaining power percentage is within the preset remaining power percentage interval, a preset charging rate characteristic curve corresponding to the remaining power percentage within the preset remaining power percentage interval is obtained, and the preset charging rate characteristic curve is set as the planned charging rate characteristic curve; The actual charging rate characteristic curve of the target charging pile within the time threshold is obtained, and the actual charging rate characteristic curve is overlapped and compared with the planned charging rate characteristic curve to obtain the difference value between the actual charging rate characteristic curve and the planned charging rate characteristic curve, and the difference value between the actual charging rate characteristic curve and the planned charging rate characteristic curve is set as the charging out-of-control risk index, and the charging out-of-control risk index is compared and analyzed with the preset charging out-of-control risk index threshold value entered and stored internally to obtain an alarm signal.

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