Charging pile intelligent test system and service life evaluation method

Abstract

The invention discloses a charging pile intelligent test system and a service life evaluation method, the test system comprises a performance test system, an MES management system and a charging pile test frame, and the performance test system and the MES management system are electrically connected with each other; a detection sensor and a tested charging pile of the performance test system are installed on a charging pile test frame, and the tested charging piles are electrically connected in series on the test frame, so that a plurality of charging piles can be tested at the same time at a time, but the test power consumption is only the power consumption of a single charging pile; through a mode of normalizing the daily operation time of the charging pile under different environmental parameters into a standard and unified environmental parameter combination, the service life of the charging pile can be evaluated more accurately and consistently.

Description

Technical Field

[0001] The present invention relates to the technical field of charging pile testing, and particularly relates to an intelligent testing system for charging piles and a method for life assessment. Background Art

[0002] A charging pile, also known as an electric vehicle charging station or an electric vehicle power supply device, is a device that provides electrical energy for electric vehicles, enabling electric vehicles to store sufficient power to support their operation. In existing charging pile tests, each charging pile corresponds to a load box, resulting in high costs and large power consumption. For example, if each charging pile has a power of 7 kW and 10 charging piles are tested together, the total power will reach 70 kW. For short-term functional tests, this is barely acceptable, but for long-term performance tests, especially life tests, it is generally unacceptable. Therefore, the sampling rate of traditional testing methods is low, and life tests are rarely conducted.

[0003] On the other hand, during the operation of the charging pile, it is impossible to accurately evaluate its remaining life time, resulting in the charging pile not being replaced in a timely manner. The main impacts after the charging pile reaches the end of its life include safety risks, reduced charging efficiency, compatibility issues, and increased equipment failure rates.

[0004] Therefore, the problems of charging pile testing and life assessment have become urgent problems to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of the present invention is to overcome the defects existing in the prior art, provide an intelligent testing system for charging piles, which can effectively reduce the testing power consumption, and at the same time provide a method for life assessment, which normalizes the test data in the environment and can more accurately estimate and evaluate the life of the charging pile.

[0006] To achieve the above purpose, the present invention designs an intelligent testing system for charging piles. The testing system includes a performance testing system (including functional testing, simply referred to as performance testing), an MES management system (production management system), and a charging pile test rack. The performance testing system and the MES management system are electrically connected to each other (information is interconnected); the detection sensors of the performance testing system and the charging pile to be tested are installed on the charging pile test rack. The detection sensors include current sensors, voltage sensors, temperature sensors, humidity sensors, and counters (or frequency detectors), etc., and are connected according to the requirements of the test items. The performance test system includes a voltage test module, a current test module, and a CP line test module that are electrically connected to each other. The CP line test module includes a frequency test unit, a duty cycle test unit, and a temperature test unit that are electrically connected to each other. The MES management system includes at least a life record storage module, and may also include other MES function modules of the enterprise. The life record storage module includes a remaining life prediction unit, an actual aging unit, and an alarm unit, and the remaining life prediction unit, the actual aging unit, and the alarm unit are electrically connected to each other; The charging pile test rack includes a load box, several workstations, and a housing. Inside each of the several workstations, a charging pile is installed and they are electrically connected in series with each other in sequence. The last charging pile is electrically connected to the load. The workstations are distributed on the housing, and at least one side of the housing is open to the outside, facilitating the installation and electrical connection of the charging piles. The load box is fixedly installed at the bottom of the housing, and a load is placed inside. The load is electrically connected to the performance test system, facilitating the performance test system to obtain test information.

[0007] Further, the load includes a charging battery or a virtual load, and the virtual load includes a heating resistor.

[0008] Further, the total number of series-connected charging piles does not exceed 20.

[0009] Further, the voltage test module is used to test the voltage when the charging pile is running, the current test module is used to test the current when the charging pile is running, the CP line test module is used to test the comprehensive data of the tinned copper clad steel wire, and the comprehensive data includes frequency, duty cycle, and temperature, etc. The frequency test unit is used to test the signal line frequency of the tinned copper clad steel wire, the duty cycle test unit is used to test the time ratio of the high level time of the output signal in one cycle, and the temperature test unit is used to test the temperature of the tinned copper clad steel wire.

[0010] Further, the life record storage module is used for processing, analyzing, and storing the life information of the charging pile. The remaining life prediction unit is used to predict the remaining life of the charging pile according to the environmental humidity and environmental temperature. The actual aging unit is used to monitor the actual aging degree or the real-time loss of life during the operation of the charging pile. The alarm unit is used to give an alarm according to the remaining life of the charging pile.

[0011] Further, the analysis and processing method of the life record storage module includes the steps: S1. Statistically calculate the ideal environment service life of several similar charging piles, and calculate the average value of the ideal environment life as T 0; The method for obtaining the ideal environmental life includes the empirical method or the model method. The empirical method includes giving the life value of a single charging pile according to engineering experience, such as the actual usage time; the model method includes calculating the ideal environmental life data of the charging piles whose life has ended according to the charging pile environmental factor influence model. For the specific expiration or termination of the charging pile service life, relevant standards can be referred to; S2. Evaluation of the aging condition of the charging pile during operation: Collect the environmental temperature and humidity parameters during the normal working period of the charging pile in operation since it was put into operation, and evaluate the aging condition according to the influence of the environmental temperature and humidity on the actual service life of the charging pile; S3. Predict the remaining life according to the aging condition of the charging pile; S4. According to the remaining life condition of the charging pile, when it is lower than the threshold value, alarm processing is carried out, and the alarm reminder period is determined according to the number of alarms (that is, periodic alarms are carried out); S5. Store the service life data information of the charging pile.

[0012] Further, the ideal environment includes the ideal temperature and humidity environment, and the evaluation method of the ideal environmental life includes: (Formula 1) Among them, T j is the ideal environmental life of the evaluated charging pile, Δt is the environmental temperature and humidity sampling interval, C i is the environmental temperature at the sampling moment, C 0 is the ideal environmental temperature, i is the environmental humidity at the sampling moment, 0 is the ideal environmental humidity, . are the allowable minimum and maximum working temperatures respectively, . are the allowable minimum and maximum environmental humidities respectively; α and β are the power index adjustment coefficients respectively, and 1.5≥α≥0.5, 1.5≥β≥0.5; Under normal circumstances, C i and C 0 do not exceed . 's range, S i and S 0 do not exceed . Range. If a phenomenon beyond the range occurs, the charging pile information is not included in the average life statistical calculation; for the actually used charging piles, since exceeding the range may directly affect their subsequent use, even if there is no obvious impact, if the life assessment still needs to be carried out, the loss of life during the out-of-range period can be separately evaluated (such as increasing the adjustment coefficient to 1.5 or even higher), and then summarized into the overall already lost life.

[0013] When n is the maximum (and also the final) sampling sequence value at the end of the actual charging pile life, then represents the evaluated value (or normalized value) of the ideal environment life of the j-th charging pile in actual use; the judgment of the end of life refers to industry or national standards, or can be defined by the enterprise's own standards, in short, as long as it is consistent; Then the average ideal environment life T 0 is the statistical average of the ideal environment lives T j of several charging piles that have normally ended their lives; When n is the sampling sequence value during the actual operation of the charging pile at the current moment, then represents the already lost life (normalized ideal environment life) of the j-th charging pile at the current moment in actual use, also known as the degree of aging; Then the remaining life of this charging pile .

[0014] Furthermore, the analysis and processing method further includes: When , an alarm is issued, and the period of the alarm is executed according to ; Among them, is the set number of alarm times.

[0015] Furthermore, the model method includes collecting the environmental temperature and humidity parameters of several charging piles during the normal working period from being put into operation to the end of life, and evaluating the ideal environment life data of each charging pile according to the ideal environment life evaluation model of formula 1, and statistically averaging the evaluation results.

[0016] On the other hand, a charging pile life evaluation method normalizes the daily operation time of the charging pile under different environmental parameters to a standard unified environmental parameter combination, and the evaluation method includes: (Formula 1) Among them, T j is the evaluated ideal environment life of the charging pile, Δt is the environmental temperature and humidity sampling interval, C i is the environmental temperature at the sampling moment, C 0 is the ideal environment temperature, i is the environmental humidity at the sampling moment, 0 is the ideal environmental humidity, 、 are the allowable minimum and maximum operating temperatures respectively, 、 are the allowable minimum and maximum environmental humidities respectively; under normal circumstances, C i and C 0 do not exceed the ranges of 、 , and S i and S 0 do not exceed the ranges of 、 ; α and β are power exponent adjustment coefficients respectively, and 1.5≥α≥0.5, 1.5≥β≥0.5; When n is the maximum sampling sequence value at the end of the actual charging pile life, then represents the evaluated value of the actual ideal environmental life of the jth charging pile; Then the average ideal environmental life T 0 is the statistical average of the ideal environmental lives T j of several charging piles that have normally ended their lives; When n is the sampling sequence value during the actual operation of the charging pile at the current moment, then represents the consumed life of the jth charging pile actually used at the current moment; Then the remaining life of this charging pile .

[0017] The advantages and beneficial effects of the present invention are as follows: A charging pile intelligent test system including a performance test system, an MES management system, and a charging pile test rack is constructed. The performance test system is used to complete the voltage test, current test, and CP line test of the charging pile. The MES management system is used to realize the prediction of the remaining life of the charging pile, the estimation of the consumed life, and the timely alarm of insufficient life. By connecting the charging piles to be tested in series electrically on the test rack, multiple charging piles can be tested simultaneously at one time, but the test power consumption is only the power consumption of a single charging pile, reducing the test cost; A charging pile life evaluation method is designed. By normalizing the daily operation time of the charging pile under different environmental parameters to a standard unified combination of environmental parameters, the charging pile life evaluation can be carried out more accurately and consistently. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a block diagram of the composition of a charging pile intelligent test system of the present invention; Figure 2 is a schematic structural diagram of a charging pile test rack; Figure 3It is the analysis and processing flow chart of the life record storage module.

[0019] Markings in the figure: 1. Load box, 2. Workstation, 3. Housing. Specific implementation manners

[0020] The following combines the accompanying drawings and embodiments to further describe the specific implementation manners of the present invention. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and cannot be used to limit the protection scope of the present invention.

[0021] Embodiment 1: An intelligent charging pile testing system of the present invention, as Figure 1 and Figure 2 shown, the testing system includes a performance testing system (including function testing, simply referred to as performance testing), an MES management system (production management system), and a charging pile test rack. The performance testing system and the MES management system are electrically connected to each other (information interconnected); the detection sensors of the performance testing system and the charging pile to be tested are installed on the charging pile test rack. The detection sensors include current sensors, voltage sensors, temperature sensors, humidity sensors, and counters (or frequency detectors), etc., and are connected according to the requirements of the test items; The performance testing system includes a voltage testing module, a current testing module, and a CP line testing module that are electrically connected to each other. The CP line testing module includes a frequency testing unit, a duty cycle testing unit, and a temperature testing unit that are electrically connected to each other; the MES management system at least includes a life record storage module, and may also include other MES function modules of the enterprise. The life record storage module includes a remaining life prediction unit, an aging actual unit, and an alarm unit. The remaining life prediction unit, the aging actual unit, and the alarm unit are electrically connected to each other; The charging pile test rack includes a load box (1), several workstations (2), and a housing (3). Inside each of the several workstations (2), a charging pile is installed and they are electrically connected in series with each other in sequence. The last charging pile is electrically connected to the load; the workstations (2) are distributed on the housing (3). At least one side of the housing is open to facilitate the installation and electrical connection of the charging pile. The load box (1) is fixedly installed at the bottom of the housing (3) and loads are placed inside. The load is electrically connected to the performance testing system to facilitate the performance testing system to obtain test information. If the actual number of charging piles to be tested is less than the number of workstations, the workstations without installed charging piles can be short-circuited by wires to ensure that the charging test can continue; the load box and the housing are integrally designed, with a compact structure and convenient testing.

[0022] Since the power consumption of each charging pile itself is very small, in the present invention, multiple charging piles are connected in series (mainly the charging switches are connected in series) and share a single load, enabling simultaneous testing of multiple charging piles, and the power consumption is only equivalent to that of a single charging pile during testing. Therefore, the testing power consumption can be greatly reduced. On the other hand, since the power consumption of the charging pile itself always exists, the number of series-connected charging piles cannot be too large, generally controlled within 20, or according to the actual performance parameters of the charging pile, the total power consumption of the series-connected charging piles is controlled within 1 / 10 of the effective charging power consumption, and the number of charging piles to be tested simultaneously at one time is designed based on this standard.

[0023] Preferably, the load includes a charging battery or a virtual load. The virtual load includes a heating resistor. In this embodiment, a heating resistor is used as the virtual load, and the load state is relatively stable, which can avoid the influence of different battery characteristics on the test results of the charging pile performance.

[0024] Preferably, the total number of series-connected charging piles does not exceed 20. In this embodiment, for the testing requirements of the charging pile of model AEV-AC007, 12 workstations are set up on a test rack, so 12 charging piles can be connected in series for simultaneous testing.

[0025] Preferably, the voltage test module is used to test the voltage when the charging pile is operating, the current test module is used to test the current when the charging pile is operating, the CP wire test module is used to test the comprehensive data of the tinned copper-clad steel wire, and the comprehensive data includes frequency, duty cycle, temperature, etc. The frequency test unit is used to test the signal wire frequency of the tinned copper-clad steel wire, the duty cycle test unit is used to test the proportion of the high-level time of the output signal in one cycle, and the temperature test unit is used to test the temperature of the tinned copper-clad steel wire.

[0026] Preferably, the life record storage module is used for processing, analyzing, and storing the life information of the charging pile. The remaining life prediction unit is used to predict the remaining life of the charging pile based on the environmental humidity and environmental temperature. The actual aging unit is used to monitor the actual aging degree or real-time loss of life during the operation of the charging pile. The alarm unit is used to give an alarm according to the remaining life of the charging pile.

[0027] Embodiment 2: The difference from Embodiment 1 is that, as Figure 3 shown, the analysis and processing method of the life record storage module in this embodiment includes the steps of: S1. Statistically calculate the ideal environmental service life of several similar charging piles, and calculate the average value of the ideal environmental life as T 0 ; The acquisition method of the ideal environmental life includes the empirical method or the model method. In this embodiment, the empirical method is adopted, including giving the life value of a single charging pile according to engineering experience, such as the actual use time; Preferably, the model method includes calculating the ideal environmental life data of the charging pile that has reached the end of its life according to the charging pile environmental factor influence model. For the expiration or termination of the service life of the charging pile, specific reference can be made to relevant standards; S2. Evaluation of the aging condition of the charging pile during operation: Collect the environmental temperature and humidity parameters of the charging pile during normal working hours from the start of operation, and evaluate the aging condition according to the influence of the environmental temperature and humidity on the actual service life of the charging pile; S3. Predict the remaining life according to the aging condition of the charging pile; S4. According to the remaining life condition of the charging pile, when it is lower than the threshold, an alarm is processed, and the alarm reminder period is determined according to the number of alarms (i.e., periodic alarm); S5. Store the service life data information of the charging pile.

[0028] Preferably, the ideal environment includes an ideal temperature and humidity environment, and the evaluation method of the ideal environmental life includes: (Formula 1) where T j is the ideal environmental life of the charging pile after evaluation, Δt is the environmental temperature and humidity sampling interval, C i is the environmental temperature at the sampling moment, C 0 is the ideal environmental temperature, i is the environmental humidity at the sampling moment, 0 is the ideal environmental humidity, , are the allowable minimum and maximum working temperatures respectively, , are the allowable minimum and maximum environmental humidities respectively; α and β are power index adjustment coefficients, and 1.5 ≥ α ≥ 0.5, 1.5 ≥ β ≥ 0.5; Under normal circumstances, C i and C 0 do not exceed the range of , , and S i and S 0 do not exceed the range of , . If the phenomenon of exceeding the range occurs, the information of this charging pile is not included in the average life statistical calculation; for the actually used charging pile, because exceeding the range may directly affect its subsequent use, even if there is no obvious impact, if the life evaluation still needs to be continued, the loss of life during the period exceeding the range can be separately evaluated (such as increasing the adjustment coefficient to 1.5 or even higher), and then summarized into the overall already consumed life.

[0029] When n is the maximum (and final) sampling sequence value at the end of the actual charging pile's lifespan, then represents the actual usage ideal environment lifespan evaluation value (or normalized value) of the j-th charging pile; the determination of the end of the lifespan shall be carried out with reference to industry or national standards, or it can also be the enterprise's self-defined standard, as long as it is consistent; Then the ideal environment lifespan mean value T 0 is the statistical mean value of the ideal environment lifespans T j of several charging piles that have normally ended their lifespans; When n is the sampling sequence value during the actual operation of the charging pile at the current moment, then represents the actual used and depleted lifespan (normalized ideal environment lifespan) of the j-th charging pile at the current moment, also known as the aging degree; Then the remaining lifespan of this charging pile .

[0030] The present invention assumes that the working temperature and humidity environment of the charging pile remains unchanged within the sampling period. When the charging pile is not working, the sampling value is not recorded and thus does not participate in the lifespan statistics. That is, the lifespan referred to in the present invention is the working lifespan and does not include the idle time.

[0031] Currently, the traditional lifespan statistics method takes the actual usage time of the equipment or product (charging pile) from the time of being put into use to being phased out as the actual lifespan time of the equipment. This method is not scientific because even during normal use, the environmental parameters are changing in real time. Especially when the temperature or humidity changes within a large range, it is inappropriate to only use the absolute time as a parameter. For example, if the normal working temperature of a certain equipment is 25°C and it has worked at 80°C for 4 years in an extreme case, it is obviously unreasonable to take 4 years as the sampled lifespan data. Generally, it may work in an environment with fluctuating temperatures. Considering only the time factor is also obviously unreasonable.

[0032] In short, the traditional equipment lifespan statistics generally only focuses on the actual working duration and does not consider the influence of environmental factors. Although it has certain reference value, it is not accurate. The lifespan evaluation method proposed by the present invention is equivalent to normalizing the working time under different environments into the working time under the ideal environment. Therefore, the concept of lifespan is more accurate, and it is more scientific to use this as a unified evaluation standard.

[0033] The present invention uses an empirical function of a decimal power exponent (equivalent to taking the square root) to normalize the lifespan data of the charging pile, mainly considering that the lifespan of the charging pile is mainly affected by the environmental temperature and humidity, and the temperature difference and humidity difference are not sufficient to affect the lifespan size in proportion, and the influence of humidity change on the lifespan is even smaller. Therefore, a smaller power exponent is used. The model also designs the power exponent adjustment coefficients α and β. If there are measured lifespan data under a constant temperature and humidity environment, they can be used to invert the values of α and β. Otherwise, the conventional set value of 1 is taken.

[0034] Of course, for the specific normalization method, the present invention only gives an empirical method, and there can be more other normalization methods. Especially when the environmental impact factors change, the method can naturally be different. However, one thing should be followed, that is, the comparison of the same equipment life should be carried out under the same standard. The comparison of life under different standards is generally meaningless or at least inaccurate.

[0035] Generally, values are selected within the normal working temperature and humidity range. Ideally, it should be the optimal temperature and humidity environment. For the charging pile for the rechargeable battery with the model number AEV-AC007, in this embodiment, C 0 = 25 °C, 0 = 60%, α = β = 1.

[0036] The focus of the present invention is to establish a consistent evaluation standard for the life of charging piles, so that the performance of charging piles can be discussed and compared within the same theoretical framework.

[0037] Preferably, the analysis and processing method further includes: When occurs, an alarm is issued, and the period of the alarm is executed according to ; Among them, is the set number of alarm times; in this embodiment, the number of alarm times is set to 10 times.

[0038] That is, when the remaining life degree of the actual charging pile reaches one-fourth of the average life, an alarm is given, and the period of the alarm is proportional to the predicted life time and the number of alarm times.

[0039] Embodiment 3: The difference from Embodiment 2 is that in this embodiment, the model method is used to obtain the ideal environment life of the charging pile. Specifically, it includes collecting the environmental temperature and humidity parameters of a number of charging piles during the normal working period from the time of putting into operation to the end of life, and evaluating the ideal environment life data of each charging pile according to the ideal environment life evaluation model of Formula 1, and statistically averaging the evaluation results.

[0040] Embodiment 4: The difference from Embodiment 1 is that in this embodiment, the charging pile test is combined with the battery replacement service provided by the intelligent charging station. Each test system (based on the test rack) uses a fixed model rechargeable battery as the load and replaces it regularly. The load is also relatively stable in state. The test work is combined with commercial operation to further reduce the test cost.

[0041] Embodiment 5: The difference from Embodiment 1 is that for the charging pile test requirements of the model AEV200-AC007, 15 workstations are set up on one test rack, so 15 charging piles can be connected in series to conduct tests simultaneously.

[0042] Embodiment 6: A method for evaluating the service life of a charging pile, which normalizes the daily operating time of the charging pile under different environmental parameters to a standard unified combination of environmental parameters. The evaluation method includes: (Formula 1) Where T j is the ideal environmental life of the evaluated charging pile, Δt is the environmental temperature and humidity sampling interval, C i is the environmental temperature at the sampling moment, C 0 is the ideal environmental temperature, i is the environmental humidity at the sampling moment, 0 is the ideal environmental humidity, 、 are the allowable minimum and maximum operating temperatures respectively, 、 are the allowable minimum and maximum environmental humidities respectively; under normal circumstances, C i and C 0 do not exceed the range of 、 , S i and S 0 do not exceed the range of 、 ; α and β are power index adjustment coefficients respectively, and 1.5≥α≥0.5, 1.5≥β≥0.5; When n is the maximum sampling sequence value at the end of the actual service life of the charging pile, then represents the evaluated value of the actual ideal environmental life of the jth charging pile; Then the average ideal environmental life T 0 is the statistical average of the ideal environmental lives T j of several charging piles that have normally ended their service lives; When n is the sampling sequence value during the actual operation of the charging pile at the current moment, then represents the consumed life of the jth charging pile actually used at the current moment; Then the remaining life of the charging pile .

[0043] For the charging pile of the rechargeable battery with the model AEV200-AC007, in this embodiment, C 0 = 30°C, ​​0 = 50%, α = β = 1.

[0044] The above are only some relatively systematic and comprehensive embodiments of the intelligent charging pile test system and the life evaluation method of the present invention. In fact, there can be various ways to divide the functional modules of the test system and the composition method, and there can also be various configurations of the test rack, such as the design of a load box or a split structure of the load and the test rack (for easy load replacement), establishing a similar life evaluation model, etc. These combinations or preferred solutions should also be regarded as the protection scope of the present invention and will not be listed one by one here.

Claims

1. A charging pile intelligent testing system, characterized in that: The test system includes a performance test system, an MES management system and a charging pile test stand, wherein the performance test system and the MES management system are electrically connected to each other; the detection sensor of the performance test system and the tested charging pile are installed on the charging pile test stand; The performance test system includes a voltage test module, a current test module and a CP line test module electrically connected to each other, and the CP line test module includes a frequency test unit, a duty cycle test unit and a temperature test unit electrically connected to each other; the MES management system includes at least a life record storage module, and the life record storage module includes a remaining life prediction unit, an actual aging unit and an alarm unit, and the remaining life prediction unit, the actual aging unit and the alarm unit are electrically connected to each other; The charging pile test stand comprises a load box (1), a plurality of workstations (2) and a shell (3); a plurality of the workstations (2) are each equipped with a charging pile and are electrically connected in series with one another in sequence, with the last charging pile being electrically connected to a load; the workstations (2) are distributed on the shell (3), and the load is electrically connected to a performance test system.

2. A charging pile intelligent testing system according to claim 1, characterized in that: The load comprises a rechargeable battery or a dummy load, the dummy load comprises a heating resistor, and the load box (1) is fixedly mounted on the bottom of the housing (3), with the load placed inside.

3. A charging pile intelligent testing system according to claim 1, characterized in that: The total number of charging piles connected in series shall not exceed 20.

4. A charging pile intelligent testing system according to claim 1, characterized in that: The voltage testing module is used to test the voltage of the charging pile when it is running, the current testing module is used to test the current of the charging pile when it is running, the CP line testing module is used to test the comprehensive data of the tinned copper clad steel wire, the frequency testing unit is used to test the signal line frequency of the tinned copper clad steel wire, the duty cycle testing unit is used to test the proportion of the high level time of the output signal in one cycle, and the temperature testing unit is used to test the temperature of the tinned copper clad steel wire.

5. The charging pile intelligent testing system according to claim 1, characterized in that: The life record storage module is used for processing, analyzing and storing the life information of the charging pile. The remaining life prediction unit is used to predict the remaining life of the charging pile based on the ambient humidity and ambient temperature. The actual aging unit is used to monitor the actual aging degree or real-time loss of life of the charging pile during operation. The alarm unit is used to issue an alarm based on the remaining life of the charging pile.

6. The charging pile intelligent testing system according to claim 1, characterized in that: The analysis and processing method of the life record storage module comprises the steps of: S1. Statistically calculate the ideal environmental service life of a number of similar charging piles, and calculate the average ideal environmental service life as T0; the method for obtaining the ideal environmental service life includes an empirical method or a model method; S2. Charging pile aging assessment: Collect the ambient temperature and humidity parameters of the charging piles in operation from the time they are put into operation to the normal working hours, and conduct aging assessment based on the impact of ambient temperature and humidity on the actual service life of the charging piles; S3. Predict the remaining life of the charging pile according to its aging condition; S4. According to the remaining life of the charging pile, when it is lower than the threshold, an alarm is processed, and the alarm reminder cycle is determined according to the number of alarms; S5. Store the charging pile service life data information.

7. A charging pile intelligent testing system according to claim 6, characterized in that: The ideal environment includes an ideal temperature and humidity environment, and the evaluation method of the ideal environment life includes: (Formula 1) Among them, T j is the ideal environmental life of the charging pile after evaluation, Δt is the ambient temperature and humidity sampling interval, C i is the ambient temperature at the sampling time, C0 is the ideal ambient temperature, i is the ambient humidity at the sampling time, 0 is the ideal ambient humidity. , are the minimum and maximum allowable operating temperatures, , are the minimum and maximum allowable ambient humidity respectively; α and β are power exponential adjustment coefficients respectively, and 1.5≥α≥0.5, 1.5≥β≥0.5; Normally, C i and C0 does not exceed , The range of S i and S0 does not exceed , scope; When n is the maximum sampling sequence value when the actual charging pile ends its life, then Indicates the ideal environment life evaluation value of the j-th charging pile in actual use; The ideal environmental life mean T0 is the ideal environmental life of several normal life ends T j The statistical mean of When n is the sampling sequence value of the charging pile in actual operation at the current moment, Indicates the actual consumed life of the j-th charging pile at the current moment; The remaining life of the charging pile .

8. The charging pile intelligent testing system according to claim 7, characterized in that: The analysis and processing method also includes: when When the alarm is sounded, the alarm cycle is implement; in, The number of alarms set.

9. The charging pile intelligent testing system according to claim 7, characterized in that: The model method includes collecting the ambient temperature and humidity parameters of several charging piles during normal working hours from the time they are put into operation to the end of their life, and evaluating the ideal environmental life data of each charging pile according to the ideal environmental life evaluation model of Formula 1, and performing statistical averaging on the evaluation results.

10. A charging pile life assessment method, characterized in that: The daily operation time of the charging pile under different environmental parameters is normalized to a standard unified environmental parameter combination. The evaluation method includes: (Formula 1) Among them, T j is the ideal environmental life of the charging pile after evaluation, Δt is the ambient temperature and humidity sampling interval, C i is the ambient temperature at the sampling time, C0 is the ideal ambient temperature, i is the ambient humidity at the sampling time, 0 is the ideal ambient humidity. , are the minimum and maximum allowable operating temperatures, , are the minimum and maximum allowable ambient humidity respectively; under normal circumstances, C i and C0 does not exceed , The range of S i and S0 does not exceed , range; α and β are power exponential adjustment coefficients, and 1.5≥α≥0.5, 1.5≥β≥0.5; When n is the maximum sampling sequence value when the actual charging pile ends its life, then Indicates the ideal environment life evaluation value of the j-th charging pile in actual use; The ideal environmental life mean T0 is the ideal environmental life of several normal life ends T j The statistical mean of When n is the sampling sequence value of the charging pile in actual operation at the current moment, Indicates the actual consumed life of the j-th charging pile at the current moment; The remaining life of the charging pile .

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