AC charging data analysis method, device and system

Abstract

The embodiment of the present application proposes an AC charging data analysis method, device and system. It relates to the field of charging technology and is applied to AC charging data analysis equipment. The method includes: obtaining a first charging guide electrical parameter before charging; if the first charging guide electrical parameter meets the preset charging entry condition, then obtaining the charging process data during the charging process, and the charging process data at least includes: a second charging guide electrical parameter and a power electrical parameter; according to the second charging guide electrical parameter and the power electrical parameter, the AC analysis diagnosis result during the charging process is obtained. Therefore, the present application can filter out data that does not meet the preset standards, thereby ensuring that the AC analysis diagnosis result obtained during the charging process meets the preset standards, and based on the AC analysis diagnosis result, locate the fault situation corresponding to the AC analysis diagnosis result, and provide the countermeasures and fault causes of the fault situation.

Description

Technical Field

[0001] The present application relates to the field of charging technology, and in particular to an AC charging data analysis method, an AC charging data analysis device, and an AC charging data analysis system. Background Art

[0002] With the rapid development of the electric vehicle industry, the demand for charging piles has gradually increased. However, many problems have also arisen, especially the problems that arise during the charging and discharging process of charging piles for electric vehicles.

[0003] At present, in order to solve many problems that arise during the charging and discharging process of electric vehicles with charging piles, most of the methods used are to detect the voltage or current status in the charging piles.

[0004] However, this method does not take into account the problems that exist in the charging and discharging process of electric vehicles, has certain limitations, and only detects the voltage or current status of the charging pile, and cannot guarantee that the diagnosed problems meet international standards. Summary of the invention

[0005] The purpose of this application is to provide an AC charging data analysis method, an AC charging data analysis device and an AC charging data analysis system. By analyzing the data during the charging process, the data that does not meet the international standards is filtered out, thereby ensuring that the AC analysis diagnosis results obtained during the charging process meet the international standards, and based on the AC analysis diagnosis results, locate the fault conditions corresponding to the AC analysis diagnosis results, and provide the countermeasures and causes of the fault conditions through local historical abnormal records or cloud databases.

[0006] In order to achieve the above purpose, the technical solution adopted in the embodiment of the present application is as follows:

[0007] In a first aspect, an embodiment of the present application provides an AC charging data analysis method, which is applied to an AC charging data analysis device, and the method includes:

[0008] Acquiring a first charging guide electrical parameter before charging;

[0009] If the first charging guidance electrical parameter meets the preset charging entry condition, then acquiring charging process data during the charging process, the charging process data at least including: a second charging guidance electrical parameter and a power electrical parameter;

[0010] An AC analysis diagnosis result during the charging process is obtained according to the second charging guidance electrical parameter and the power electrical parameter.

[0011] Optionally, the first charging guidance electrical parameter includes: a first charging guidance amplitude, a first charging guidance frequency;

[0012] If the first charging guidance electrical parameter satisfies a preset charging entry condition, before acquiring charging process data during the charging process, the method further includes:

[0013] determining whether the first charging guide amplitude is within a preset charging guide amplitude range;

[0014] Determining whether the first charging guide frequency is within a preset charging guide frequency range;

[0015] If the first charging guide amplitude is within the preset charging guide amplitude range, and the first charging guide frequency is within the preset charging guide frequency range, it is determined that the preset charging entry condition is met.

[0016] Optionally, the second charging guidance electrical parameter includes: a second charging guidance amplitude and a second charging guidance frequency;

[0017] Before performing analysis and diagnosis according to the second charging guidance electrical parameter and the power electrical parameter to obtain an AC analysis and diagnosis result during the charging process, the method further includes:

[0018] determining whether the second charging guide amplitude exceeds a preset charging guide amplitude range;

[0019] Determining whether the second charging guide frequency exceeds a preset charging guide frequency range;

[0020] If the second charging guide amplitude exceeds the preset charging guide amplitude range, and the second charging guide frequency exceeds the preset charging guide frequency range, it is determined that the preset charging exit condition is met.

[0021] Optionally, the power electrical parameters include: charging voltage parameters;

[0022] The performing analysis and diagnosis according to the charging process data and the power electrical parameters to obtain the AC analysis and diagnosis result during the charging process includes:

[0023] determining, according to the second charging guide amplitude during the charging process, whether there is a charging guide disconnection during the charging process, and obtaining first disconnection detection information;

[0024] Determining whether there is voltage over-limit in the charging process according to the charging voltage parameter of the charging process, and obtaining voltage over-limit detection information;

[0025] A charging compliance diagnosis result of the charging process is generated according to the first disconnection detection information and the voltage over-limit detection information, and the AC analysis diagnosis result includes: the charging compliance diagnosis result.

[0026] Optionally, the second charging guidance electrical parameter further includes: charging guidance duty cycle, and the power electrical parameter further includes: charging current parameter;

[0027] The performing analysis and diagnosis according to the charging process data and the power electrical parameters to obtain an AC analysis and diagnosis result during the charging process also includes:

[0028] According to the charging guidance duty cycle, a target charging current is calculated by using a correspondence between a preset charging current and a duty cycle;

[0029] Determine whether there is a current overlimit in the charging process according to the target charging current and the power electrical parameter, and obtain current overlimit detection information;

[0030] A charging compliance diagnosis result of the charging process is generated according to the first disconnection detection information, the voltage over-limit detection information, and the current over-limit detection information.

[0031] Optionally, the charging process data further includes: a charging control amplitude; and the method further includes:

[0032] determining, according to the charging control amplitude during the charging process, whether there is a charging control disconnection during the charging process, and obtaining second disconnection detection information;

[0033] The generating, according to the first disconnection detection information and the voltage over-limit detection information, a charging compliance diagnosis result of the charging process includes:

[0034] A charging compliance diagnosis result of the charging process is generated according to the first disconnection detection information, the second disconnection detection information, and the voltage over-limit detection information.

[0035] Optionally, the method further comprises:

[0036] Generating pre-charging guidance information and post-charging guidance information of the charging process respectively according to the first charging guidance electrical parameter and the second charging guidance electrical parameter;

[0037] The generating, according to the first disconnection detection information and the voltage over-limit detection information, a charging compliance diagnosis result of the charging process includes:

[0038] A charging compliance diagnosis result of the charging process is generated according to the pre-charging charging guidance information, the post-charging charging guidance information, the first disconnection detection information, and the voltage over-limit detection information.

[0039] In a second aspect, an embodiment of the present application provides an AC charging data analysis device, the AC charging data analysis device comprising: an AC socket, an AC gun head, a processing unit, a sampling unit, and a plurality of electrical parameter sensors;

[0040] The AC socket is used to connect an AC charging device, the AC gun head is used to connect an electric vehicle, the AC power pins of the AC socket are connected to the AC power pins of the AC gun head through corresponding power lines, the charging control pin of the AC socket is connected to the charging control pin of the AC gun head through a first signal line, and the charging guide pin of the AC socket is connected to the charging guide pin of the AC gun head through a second signal line;

[0041] Wherein, corresponding electrical parameter sensors are respectively arranged on the power line, the first signal line and the second signal line, and the plurality of electrical parameter sensors are all connected to the sampling unit, and the sampling unit is connected to the processing unit to respectively sample the power electrical parameters on the power line, the charging control amplitude on the first signal and the charging guide amplitude on the second signal line;

[0042] The second signal line is also connected to the processing unit to obtain the charging guidance frequency and duty cycle of the second signal line;

[0043] The processing unit is used to execute the AC charging data analysis method described in any one of the first aspects above.

[0044] Optionally, the AC charging data analysis device also includes: multiple temperature sensors, at least one temperature sensor is provided on the AC socket, and at least one temperature sensor is also provided on the AC gun head. The multiple temperature sensors are connected to the sampling unit to sample the socket temperature of the AC socket and the gun tip temperature of the AC gun head.

[0045] In a second aspect, an embodiment of the present application provides an AC charging data analysis system, comprising: the AC charging data analysis device, the AC charging device, and the electric vehicle described in any one of the second aspects above;

[0046] Wherein, the charging gun head of the AC charging device is connected to the AC socket of the AC charging data analysis device; the AC gun head of the AC charging data analysis device is connected to the charging socket of the electric vehicle;

[0047] The AC charging data analysis device is used to execute the AC charging data analysis method described in any one of the first aspects above.

[0048] Compared with the prior art, the AC charging data analysis method, AC charging data analysis device and AC charging data analysis system provided in the embodiments of the present application have the following beneficial effects:

[0049] The embodiment of the present application provides an AC charging data analysis method, device and system. Applied to the AC charging data analysis device, the method includes: obtaining the first charging guide electrical parameter before charging; if the first charging guide electrical parameter meets the preset charging entry condition, then obtaining the charging process data during the charging process, the charging process data at least includes: the second charging guide electrical parameter and the power electrical parameter; according to the second charging guide electrical parameter and the power electrical parameter, the AC analysis diagnosis result during the charging process is obtained, based on the AC analysis diagnosis result during the charging process, the fault situation corresponding to the AC analysis diagnosis result is located, and the countermeasures and fault causes of the fault situation are given through the local historical abnormal record or the cloud database. Therefore, the AC charging data analysis method provided by the present application can be used by car companies or pile companies in the research and development stage or road testing, without destroying the existing charging environment, to obtain the charging data of electric vehicles and AC charging piles and the AC analysis diagnosis results, and finally generate an AC analysis diagnosis report for reference by R&D or after-sales personnel to help them quickly locate faults and solve problems. Improve the stability, efficiency, safety and reliability of the AC charging data analysis system during the charging and discharging operation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0051] Figure 1 A schematic diagram of the structure of an AC charging data analysis system provided in an embodiment of the present application;

[0052] Figure 2 A schematic diagram of the structure of an AC charging data analysis device provided in an embodiment of the present application Figure 1 ;

[0053] Figure 3 A schematic diagram of the structure of an AC charging data analysis device provided in an embodiment of the present application Figure 2 ;

[0054] Figure 4 A schematic diagram of a method for analyzing AC charging data provided in an embodiment of the present application Figure 1 ;

[0055] Figure 5 A schematic diagram of a method for analyzing AC charging data provided in an embodiment of the present application Figure 2 ;

[0056] Figure 6 A schematic diagram of a method for analyzing AC charging data provided in an embodiment of the present application Figure 3 ;

[0057] Figure 7 A schematic diagram of a method for analyzing AC charging data provided in an embodiment of the present application Figure 4 ;

[0058] Figure 8 A schematic diagram of a method for analyzing AC charging data provided in an embodiment of the present application Figure 5 ;

[0059] Fig. 9 A schematic diagram of a method for analyzing AC charging data provided in an embodiment of the present application Figure 6 ;

[0060] Fig.10 A schematic diagram of a method for analyzing AC charging data provided in an embodiment of the present application Figure 7 ;

[0061] Fig.11 A schematic diagram of the structure of an AC charging data analysis device provided in an embodiment of the present application;

[0062] Fig.12 A schematic diagram of the structure of a processing unit provided in an embodiment of the present application. DETAILED DESCRIPTION

[0063] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. The described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0064] In order to clearly describe an AC charging data analysis method, an AC charging data analysis device, and an AC charging data analysis system provided in an embodiment of the present application, the AC charging data analysis system is first described in detail in conjunction with the accompanying drawings. Figure 1 This is a schematic diagram of the structure of an AC charging data analysis system provided in an embodiment of the present application. Figure 1 As shown, the AC charging data analysis 200 may include: an AC charging data analysis device 100 , an AC charging device 210 , and an electric vehicle 220 .

[0065] Among them, the charging gun head of the AC charging device 210 is connected to the AC socket of the AC charging data analysis device 100; the AC gun head of the AC charging data analysis device 100 is connected to the charging socket (such as an EV socket) of the electric vehicle 220; and the AC charging device 210 is used to charge and discharge the electric vehicle 220 through the AC charging data analysis device 100.

[0066] The AC charging data analysis device 100 is used to execute the AC charging data analysis method.

[0067] The AC charging device 210 is used to provide an AC power source, and can output electric energy through the charging gun head of the AC charging device 210. The AC charging device 210 can be selected according to actual conditions, for example, the AC charging device 210 can be selected as an AC charging pile. The electric vehicle 220 can also be selected according to actual conditions, which is not limited here.

[0068] It should be noted that the AC charging data analysis device 100 can be an independent AC charging device 210 and a device of the electric vehicle 220; the AC charging data analysis device 100 can also be a device integrated on the AC charging device 210, and there is no limitation here.

[0069] The AC charging data analysis system provided by the present application can be composed of an AC charging data analysis device, an AC charging device, and an electric vehicle; wherein the charging gun head of the AC charging device is connected to the AC socket of the AC charging data analysis device; the AC gun head of the AC charging data analysis device is connected to the charging socket of the electric vehicle; and the AC charging data analysis device is used to execute the AC charging data analysis method. Therefore, the AC charging device in the present application provides electric energy, which is transmitted to the electric vehicle through the AC charging data analysis device to charge and discharge the electric vehicle, thereby ensuring the stability, efficiency, safety and reliability of the AC charging data analysis system during the charging and discharging operation process.

[0070] Furthermore, the present application also provides a schematic diagram of an AC charging data analysis device 100 . Figure 2 A schematic diagram of the structure of an AC charging data analysis device provided in an embodiment of the present application Figure 1 .like Figure 2 As shown, the AC charging data analysis device 100 may include: an AC socket 110 , an AC gun head 120 , a processing unit 130 , a sampling unit 140 and a plurality of electrical parameter sensors 150 .

[0071] Among them, the AC socket 110 is used to connect the AC charging device 210, the AC gun head 120 is used to connect the electric vehicle 220, the AC power pins of the AC socket 110 are connected to the AC power pins of the AC gun head 120 through corresponding power lines (such as A / B / C / N / PE lines) for transmitting power electrical signals; the charging control pin of the AC socket 110 is connected to the charging control pin of the AC gun head 120 through a first signal line (such as CC) for transmitting charging control electrical parameters; the charging guide pin of the AC socket 110 is connected to the charging guide pin of the AC gun head 120 through a second signal line (such as CP line) for transmitting charging guide electrical parameters.

[0072] Among them, corresponding electrical parameter sensors are respectively arranged on the power line, the first signal line and the second signal line, and multiple electrical parameter sensors 150 are all connected to the sampling unit 140 for collecting electrical signals on the power line, the first signal line and the second signal line; the sampling unit 140 is connected to the processing unit 130 to respectively sample the power electrical parameters on the power line, the charging control amplitude on the first signal line and the charging guide amplitude on the second signal line; the second signal line is also connected to the processing unit 130 to obtain the charging guide frequency and duty cycle of the second signal line; and based on these data, the charging and discharging operations of the AC charging device 210 on the electric vehicle 220 are controlled.

[0073] The processing unit 130 is used to execute the AC charging data analysis method. The processing unit 130 can be selected according to actual conditions, for example, the processing unit 130 can be selected as an MCU (Microcontroller Unit). The sampling unit 140 can be selected according to actual conditions, for example, the sampling unit 140 can be selected as a high-speed sampling chip. Multiple electrical parameter sensors 150 can also be selected according to actual conditions, for example, the electrical parameter sensor 150 can be a voltage sensor or a current sensor.

[0074] It should be noted that the sampling unit 140 is divided into a high-voltage acquisition module and a low-voltage acquisition module, wherein the high-voltage acquisition module is used to collect the AC charging voltage signal output by the AC charging device 210, such as the voltage collected on the A, B, and C lines; the low-voltage acquisition module is used to collect low-voltage signals such as the AC charging current, CC, CP and other voltages output by the AC charging device 210.

[0075] The AC charging data analysis device provided in the present application may be composed of an AC socket, an AC gun head, a processing unit, a sampling unit and a plurality of electrical parameter sensors; the AC socket is used to connect the AC charging device, the AC gun head is used to connect the electric vehicle, the AC power pins of the AC socket are connected to the AC power pins of the AC gun head through corresponding power lines, the charging control pins of the AC socket are connected to the charging control pins of the AC gun head through a first signal line, and the charging guide pins of the AC socket are connected to the charging guide pins of the AC gun head through a second signal line; wherein corresponding electrical parameter sensors are respectively arranged on the power line, the first signal line and the second signal line, the plurality of electrical parameter sensors are all connected to the sampling unit, the sampling unit is connected to the processing unit, so as to respectively sample the power electrical parameters on the power line, the charging control amplitude on the first signal and the charging guide amplitude on the second signal line; the second signal line is also connected to the processing unit, so as to obtain the charging guide frequency and duty cycle of the second signal line; the processing unit is used to execute the AC charging data analysis method. Therefore, the present application can collect current signals, voltage signals, etc. through the sampling unit for analysis and recording, and output the diagnostic results of this charging to the user at the end of charging, thereby improving the reliability of the AC charging data analysis equipment.

[0076] Optionally, the present application also provides a schematic diagram of an AC charging data analysis device 100 . Figure 3 A schematic diagram of the structure of an AC charging data analysis device provided in an embodiment of the present application Figure 2 .like Figure 3 As shown, the AC charging data analysis device 100 may further include: a plurality of temperature sensors T.

[0077] Among them, at least one temperature sensor T is arranged on the AC socket 110 , and at least one temperature sensor T is also arranged on the AC gun head 120 . The multiple temperature sensors T are connected to the sampling unit 140 to sample the socket temperature of the AC socket 110 and the gun head temperature of the AC gun head 120 .

[0078] For example, in the AC charging data analysis device 100, the temperature sensor T1 may be arranged between the AC power pin A and the AC power pin B; the temperature sensor T2 may be arranged between the AC power pin B and the AC power pin C, and the temperature on the AC socket 110 is collected through the temperature sensor T1 and the temperature sensor T2; the temperature sensor T3 may be arranged between the AC power pin A and the AC power pin B; the temperature sensor T4 may be arranged between the AC power pin B and the AC power pin C, and the temperature on the AC gun head 120 is collected through the temperature sensor T3 and the temperature sensor T4. All temperature sampling signals are input into the sampling unit 140 through the analog multi-channel SPI (Serial Peripheral Interface) controller interface, and the sampling unit 140 outputs the temperature sampling signal to the processing unit 130, and the temperatures of the power terminals at the AC gun head and the AC gun seat are obtained respectively, so as to realize the temperature monitoring function of the power terminals at the AC gun head and the AC gun seat.

[0079] The AC charging data analysis device provided by the present application can also be composed of multiple temperature sensors, at least one temperature sensor is provided on the AC socket, and at least one temperature sensor is also provided on the AC gun head. The multiple temperature sensors are connected to the sampling unit to sample the socket temperature of the AC socket and the gun head temperature of the AC gun head. Therefore, the AC charging data analysis device provided by the present application can realize the temperature monitoring function of the power terminal at the AC gun head and the AC gun seat. It provides a data basis for subsequent data analysis.

[0080] The AC charging data analysis method provided in the above embodiment of the present application is explained and illustrated in detail below in conjunction with the accompanying drawings. Figure 4 A schematic diagram of a method for analyzing AC charging data provided in an embodiment of the present application Figure 1 .like Figure 4 As shown, the processing unit applied to the AC charging data analysis device may include:

[0081] S301. Obtain a first charging guidance electrical parameter before charging.

[0082] In a possible implementation manner, a first charging guiding electrical parameter before charging, such as a voltage signal on a CP line, is acquired through a sampling unit.

[0083] S302: If the first charging guidance electrical parameter meets the preset charging entry condition, then obtain charging process data during the charging process.

[0084] In one possible implementation, if the first charging guide electrical parameter (such as the voltage signal on the CP line) meets the preset charging entry condition, it is used to determine whether the connection between the charging gun head and the charging gun socket is complete, which serves as a condition for starting the charging process, and then determines the charging start time, and obtains the charging process data sampled by the sampling unit during the charging process.

[0085] The charging process data at least includes: the second charging guide electrical parameters and the power electrical parameters. The power electrical parameters are the electrical parameters on the power line during the charging process, such as the electrical parameters collected on the A, B, and C lines (such as current signals and voltage signals); the second charging guide electrical parameters are the charging guide amplitude, charging guide frequency, duty cycle and other data on the second signal line during the charging process.

[0086] S303: Obtain an AC analysis diagnosis result during the charging process according to the second charging guidance electrical parameter and the power electrical parameter.

[0087] In one possible implementation, if the second charging guiding electrical parameter meets the preset charging termination condition, and the preset charging termination condition is exceeding the preset charging entry condition, that is, the second charging guiding electrical parameter exceeds 6V±0.8V, it means that the charging process is ended, and then the charging end time is determined; and the charging process data before the charging end time, that is, the second charging guiding electrical parameter and the power electrical parameter, are analyzed and diagnosed to obtain the AC analysis and diagnosis results during the charging process.

[0088] The embodiment of the present application provides an AC charging data analysis method, first obtaining the first charging guide electrical parameter before charging; if the first charging guide electrical parameter meets the preset charging entry condition, then obtaining the charging process data during the charging process, the charging process data at least includes: the second charging guide electrical parameter and the power electrical parameter; obtaining the AC analysis diagnosis result during the charging process according to the second charging guide electrical parameter and the power electrical parameter, locating the fault corresponding to the AC analysis diagnosis result based on the AC analysis diagnosis result during the charging process, and providing the countermeasures and fault causes of the fault condition through the local historical abnormal records or the cloud database. Therefore, the AC charging data analysis method provided by the present application can be used by car companies or pile companies in the research and development stage or road testing, without destroying the existing charging environment, to obtain the charging data of electric vehicles and AC charging piles and the AC analysis diagnosis results, and finally generate an AC analysis diagnosis report for reference by R&D or after-sales personnel to help them quickly locate faults and solve problems. Improve the stability, efficiency, safety and reliability of the AC charging data analysis system during the charging and discharging operation process.

[0089] Optionally, the first charging guide electrical parameter includes: a first charging guide amplitude and a first charging guide frequency. The first charging guide amplitude is the voltage amplitude obtained on the CP line before charging; the first charging guide frequency is the voltage frequency obtained on the CP line before charging.

[0090] In one possible implementation, Figure 5 A schematic diagram of a method for analyzing AC charging data provided in an embodiment of the present application Figure 2 .like Figure 5 As shown, in the above method, if the first charging guidance electrical parameter meets the preset charging entry condition, before obtaining the charging process data during the charging process, the method may further include:

[0091] S401. Determine whether a first charging guide amplitude is within a preset charging guide amplitude range.

[0092] S402: Determine whether the first charging guidance frequency is within a preset charging guidance frequency range.

[0093] The preset charging guide amplitude range can be selected according to actual conditions, for example, the preset charging guide amplitude range can be 6V±0.8V. The preset charging guide frequency range can be selected according to actual conditions, for example, the preset charging guide frequency range can be 1000Hz±30Hz.

[0094] In one possible implementation, it is determined whether the first charging guide amplitude is within a preset charging guide amplitude range (e.g., 6V±0.8V); and it is determined whether the first charging guide frequency is within a preset charging guide frequency range (e.g., 1000Hz±30Hz). If both conditions are met, step S403 is executed; if one of the two conditions is not met, the charging operation is not executed.

[0095] S403: If the first charging guide amplitude is within a preset charging guide amplitude range, and the first charging guide frequency is within a preset charging guide frequency range, it is determined that a preset charging entry condition is met.

[0096] In one possible implementation, if the first charging guide amplitude is within a preset charging guide amplitude range (e.g., 6V±0.8V), and the first charging guide frequency is within a preset charging guide frequency range (e.g., 1000Hz±30Hz), it is determined that the first charging guide electrical parameter is within the above range and meets the preset charging entry condition, and the charging process can be started. At the same time, the charging start time is recorded.

[0097] In the AC charging data analysis method provided in the embodiment of the present application, the first charging guide electrical parameter may be composed of the first charging guide amplitude and the first charging guide frequency; determine whether the first charging guide amplitude is within the preset charging guide amplitude range; and at the same time determine whether the first charging guide frequency is within the preset charging guide frequency range; if the first charging guide amplitude is within the preset charging guide amplitude range, and the first charging guide frequency is within the preset charging guide frequency range, then determine that the preset charging entry condition is met. Therefore, the present application ensures the charging compatibility of the AC charging data analysis device by judging the starting conditions of the charging process, improves the charging efficiency of the AC charging data analysis device, ensures charging safety, and optimizes the user experience.

[0098] Optionally, the second charging guide electrical parameter includes: a second charging guide amplitude and a second charging guide frequency. The second charging guide amplitude is the voltage amplitude obtained on the CP line during the charging process; the second charging guide frequency is the voltage frequency obtained on the CP line during the charging process.

[0099] In one possible implementation, Figure 6 A schematic diagram of a method for analyzing AC charging data provided in an embodiment of the present application Figure 3 .like Figure 6 As shown, in the above method, before analyzing and diagnosing the second charging guidance electrical parameter and the power electrical parameter to obtain the AC analysis and diagnosis result during the charging process, the method may further include:

[0100] S501. Determine whether a second charging guide amplitude exceeds a preset charging guide amplitude range.

[0101] S502: Determine whether the second charging guidance frequency exceeds a preset charging guidance frequency range.

[0102] In one possible implementation, it is determined whether the second charging guide amplitude exceeds a preset charging guide amplitude range (e.g., 6V±0.8V); and it is determined whether the second charging guide frequency exceeds a preset charging guide frequency range (e.g., 1000Hz±30Hz). If both conditions are met, step S503 is executed; if one of the two conditions is not met, the charging operation is not exited.

[0103] S503: If the second charging guide amplitude exceeds the preset charging guide amplitude range, and the second charging guide frequency exceeds the preset charging guide frequency range, it is determined that the preset charging exit condition is met.

[0104] In one possible implementation, if the second charging guide amplitude exceeds the preset charging guide amplitude range (such as 6V±0.8V), and the second charging guide frequency exceeds the preset charging guide frequency range (such as 1000Hz±30Hz), it is determined that the second charging guide electrical parameter is within the above range and meets the preset charging exit condition, and the charging process can be terminated. At the same time, the charging end time is recorded.

[0105] In the AC charging data analysis method provided in the embodiment of the present application, the second charging guide electrical parameter can be composed of the second charging guide amplitude and the second charging guide frequency; determine whether the second charging guide amplitude exceeds the preset charging guide amplitude range; and at the same time determine whether the second charging guide frequency exceeds the preset charging guide frequency range; if the second charging guide amplitude exceeds the preset charging guide amplitude range, and the second charging guide frequency exceeds the preset charging guide frequency range, it is determined that the preset charging exit condition is met. Therefore, the present application ensures the charging compatibility of the AC charging data analysis device by judging the end condition of the charging process, improves the charging efficiency of the AC charging data analysis device, ensures charging safety, and improves user experience.

[0106] Optionally, the power electrical parameters include: charging voltage parameters. The charging voltage parameters represent the voltage parameters on the A, B, and C lines during the charging process, which can be recorded as U A , U B , U C .

[0107] In one possible implementation, Figure 7 A schematic diagram of a method for analyzing AC charging data provided in an embodiment of the present application Figure 4 .like Figure 7 As shown, the above method performs analysis and diagnosis based on charging process data and power electrical parameters to obtain AC analysis and diagnosis results during the charging process, which may include:

[0108] S601. Determine whether a charging guide line is disconnected during the charging process according to a second charging guide amplitude during the charging process, and obtain first disconnection detection information.

[0109] In one possible implementation, based on the second charging guide amplitude during the charging process, the change of the second charging guide amplitude during the charging process is determined to determine whether the second signal line (such as the CP line) has a charging guide line break fault. For example, if the second charging guide amplitude is 0V, it means that the second signal line (such as the CP line) has a charging guide line break fault, and then the first line break detection information is obtained.

[0110] S602: Determine whether voltage exceeds a limit during the charging process according to charging voltage parameters during the charging process, and obtain voltage exceeding a limit detection information.

[0111] In one possible implementation method, the change of the charging voltage parameters during the charging process is determined based on the charging voltage parameters of the charging process to determine whether there is a voltage over-limit problem in the power line (such as the A / B / C / N / PE line). For example, if the charging voltage parameter is greater than the preset charging voltage, it means that there is a voltage over-limit problem in the power line (such as the A / B / C / N / PE line), and then the voltage over-limit detection information is obtained.

[0112] S603: Generate a charging compliance diagnosis result of the charging process according to the first disconnection detection information and the voltage over-limit detection information.

[0113] Among them, the AC analysis diagnostic results include: charging compliance diagnostic results.

[0114] In one possible implementation, a charging compliance diagnosis result of the charging process is generated based on the first disconnection detection information and the voltage over-limit detection information, so that the AC analysis diagnosis result includes the charging compliance diagnosis result, and the charging compliance diagnosis result includes: the first disconnection detection information and the voltage over-limit detection information.

[0115] In the AC charging data analysis method provided by the embodiment of the present application, the power electrical parameter can be composed of the charging voltage parameter; by analyzing the change of the second charging guide amplitude during the charging process, it is determined whether the charging guide is disconnected during the charging process, and the first disconnection detection information is obtained, which is helpful to timely discover and handle the faults in the charging process based on the first disconnection detection information, so as to ensure the smooth progress of the charging process and the safe use of the energy storage battery. At the same time, the maintenance and management of the AC charging equipment can be strengthened to avoid the occurrence of similar faults; according to the charging voltage parameter of the charging process, it is determined whether the voltage is over-limit during the charging process, and the voltage over-limit detection information is obtained; according to the first disconnection detection information and the voltage over-limit detection information, the charging compliance diagnosis result of the charging process is generated, and the AC analysis diagnosis result includes: the charging compliance diagnosis result, thereby improving the safety and efficiency of charging, and in the subsequent charging compliance diagnosis result, the abnormal data can be analyzed, and the possible fault type and error cause can be determined in combination with the local historical abnormal records (such as the abnormal case library of electric vehicle charging) or the cases in the cloud database, so as to obtain the charging compliance diagnosis result during the charging process.

[0116] Optionally, the second charging guidance electrical parameter further includes: a charging guidance duty cycle, and the power electrical parameter further includes: a charging current parameter. The charging guidance duty cycle can be obtained based on the output wave of the second signal line (such as the CP line).

[0117] In one possible implementation, Figure 8 A schematic diagram of a method for analyzing AC charging data provided in an embodiment of the present application Figure 5.like Figure 8 As shown, the above method performs analysis and diagnosis based on charging process data and power electrical parameters to obtain AC analysis and diagnosis results during the charging process, and may also include:

[0118] S701. Calculate a target charging current according to a charging guidance duty cycle and a corresponding relationship between a preset charging current and a duty cycle.

[0119] In a possible implementation, the target charging current is calculated according to the charging guidance duty cycle during the charging process by using a corresponding relationship between a preset charging current and the duty cycle.

[0120] For example, if the charging guide duty cycle generated by the AC charging data analysis device is 0% and is in a continuous state, the preset charging current is 0, and the AC charging device connected to the AC charging data analysis device is unavailable; if the charging guide duty cycle generated by the AC charging data analysis device is between 10% and 85%, the preset charging current is the charging guide duty cycle multiplied by 100 multiplied by 0.6; if the charging guide duty cycle generated by the AC charging data analysis device is between 85% and 90%, the preset charging current is the charging guide duty cycle multiplied by 100 minus 64, and then multiplied by 2.5, and the preset charging current does not exceed 63A.

[0121] S702: Determine whether there is current over-limit in the charging process according to the target charging current and power electrical parameters, and obtain current over-limit detection information.

[0122] In one possible implementation, the calculated target charging current and power electrical parameters are compared with the preset charging current and the preset power electrical parameters to determine whether there is a current over-limit problem in the charging process, thereby obtaining current over-limit detection information. The preset charging current and the preset power electrical parameters can be selected according to actual conditions, for example, the preset charging current and the preset power electrical parameters can be selected as the preset charging current and the preset power electrical parameters transmitted by the communication message.

[0123] S703: Generate a charging compliance diagnosis result of the charging process according to the first disconnection detection information, the voltage over-limit detection information, and the current over-limit detection information.

[0124] In one possible implementation, a charging compliance diagnosis result of the charging process is generated based on the first line break detection information obtained in step S601 and the voltage over-limit detection information and the current over-limit detection information obtained in step S602. The charging compliance diagnosis result includes: the first line break detection information, the voltage over-limit detection information and the current over-limit detection information.

[0125] In the AC charging data analysis method provided in the embodiment of the present application, the second charging guide electrical parameter can also be composed of a charging guide duty cycle, and the power electrical parameter can also be composed of a charging current parameter; according to the charging guide duty cycle, the target charging current is calculated by using the correspondence between the preset charging current and the duty cycle; then, according to the target charging current and the power electrical parameter, it is determined whether there is a current overlimit in the charging process, and current overlimit detection information is obtained; finally, according to the first disconnection detection information, the voltage overlimit detection information and the current overlimit detection information, a charging compliance diagnosis result of the charging process is generated. Therefore, the present application can analyze the abnormal data according to the charging compliance diagnosis result of the charging process, and can combine local historical abnormal records (such as an abnormal case library for electric vehicle charging) or cases in the cloud database to determine the possible fault type and error cause, thereby improving the charging safety and charging efficiency.

[0126] Optionally, the charging process data further includes: a charging control amplitude. The charging control amplitude refers to the voltage amplitude on the first signal line (such as CC).

[0127] In a possible implementation example, the AC charging data analysis method may further include:

[0128] According to the charging control amplitude during the charging process, it is determined whether there is a charging control disconnection during the charging process, and second disconnection detection information is obtained.

[0129] In one possible implementation, based on the charging control amplitude during the charging process, the change in the charging control amplitude during the charging process is determined to determine whether the first signal line (such as CC) has a charging control line break fault. For example, if the charging control amplitude is 0V, it means that the first signal line (such as CC) has a charging control line break fault, and then the second line break detection information is obtained.

[0130] In a possible implementation, in the above method, generating a charging compliance diagnosis result of the charging process according to the first disconnection detection information and the voltage over-limit detection information may include:

[0131] A charging compliance diagnosis result of the charging process is generated according to the first disconnection detection information, the second disconnection detection information and the voltage over-limit detection information.

[0132] In one possible implementation, a charging compliance diagnosis result of the charging process is generated based on the first wire break detection information, the second wire break detection information obtained in step S601, and the voltage over-limit detection information obtained in step S602. The charging compliance diagnosis result includes: the first wire break detection information, the second wire break detection information, and the voltage over-limit detection information.

[0133] In the AC charging data analysis method provided in the embodiment of the present application, the charging process data can also be composed of the charging control amplitude; according to the charging control amplitude during the charging process, it is determined whether there is a charging control line break during the charging process, and the second line break detection information is obtained; then, according to the first line break detection information, the second line break detection information and the voltage overlimit detection information, the charging compliance diagnosis result of the charging process is generated. Therefore, the present application can analyze the abnormal data according to the charging compliance diagnosis result of the charging process, and can combine local historical abnormal records (such as an abnormal case library for electric vehicle charging) or cases in the cloud database to determine the possible fault type and error cause, thereby improving the charging safety and charging efficiency.

[0134] Optionally, the AC charging data analysis method may further include:

[0135] According to the first charging guidance electrical parameter and the second charging guidance electrical parameter, charging guidance information before charging and charging guidance information after charging are generated respectively.

[0136] In one possible implementation, pre-charging charging guidance information and post-charging charging guidance information of the charging process are generated respectively according to the first charging guidance electrical parameter and the second charging guidance electrical parameter, so as to judge the state of the second signal line (such as the CP line) during the charging process, such as a normal state or an abnormal state, according to the pre-charging charging guidance information and the post-charging charging guidance information of the charging process.

[0137] In a possible implementation, in the above method, generating a charging compliance diagnosis result of the charging process according to the first disconnection detection information and the voltage over-limit detection information includes:

[0138] A charging compliance diagnosis result of the charging process is generated according to the pre-charging charging guidance information, the post-charging charging guidance information, the first disconnection detection information, and the voltage over-limit detection information.

[0139] In one possible implementation, a charging compliance diagnosis result of the charging process is generated based on the charging guidance information before charging, the charging guidance information after charging, the first disconnection detection information obtained in step S601, and the voltage over-limit detection information obtained in step S602, so that the charging compliance diagnosis result includes: the charging guidance information before charging, the charging guidance information after charging, the first disconnection detection information, and the voltage over-limit detection information.

[0140] The AC charging data analysis method provided in the embodiment of the present application generates pre-charging charging guidance information and post-charging charging guidance information of the charging process according to the first charging guidance electrical parameter and the second charging guidance electrical parameter respectively; then generates the charging compliance diagnosis result of the charging process according to the pre-charging charging guidance information, the post-charging charging guidance information, the first disconnection detection information and the voltage over-limit detection information. Therefore, the present application can analyze the abnormal data according to the charging compliance diagnosis result of the charging process, and can combine the local historical abnormal records (such as the abnormal case library of electric vehicle charging) or the cases in the cloud database to determine the possible fault type and error cause, thereby improving the charging safety and charging efficiency.

[0141] The AC charging data analysis method provided in the above embodiment of the present application is explained and illustrated in detail below in conjunction with the accompanying drawings. Fig. 9 A schematic diagram of a method for analyzing AC charging data provided in an embodiment of the present application Figure 6 .like Fig. 9 As shown, the above method performs analysis and diagnosis based on charging process data and power electrical parameters to obtain AC analysis and diagnosis results during the charging process, and may also include:

[0142] S801. Determine charging reason information of a charging process according to a second charging guidance amplitude.

[0143] In a possible implementation manner, the charging shutdown reason information of the charging process is determined according to the amplitude change of the second charging guide amplitude during the charging process, that is, the shutdown source during the charging process is determined.

[0144] S802: Determine charging time information of the charging process according to the time when a preset charging entry condition is satisfied and the time when a preset charging exit condition is satisfied, and generate charging profile information of the charging process.

[0145] In a possible implementation, the charging start time information of the charging process is determined according to the time when the preset charging entry condition is met (e.g., the first charging guide amplitude is within the preset charging guide amplitude range (e.g., 6V±0.8V), and the first charging guide frequency is within the preset charging guide frequency range (e.g., 1000Hz±30Hz)); and the charging end time information of the charging process is determined according to the time when the preset charging exit condition is met (e.g., the second charging guide amplitude exceeds the preset charging guide amplitude range (e.g., 6V±0.8V), and the second charging guide frequency exceeds the preset charging guide frequency range (e.g., 1000Hz±30Hz)), and the charging profile information of the charging process is generated from the charging start time information of the charging process and the charging end time information of the charging process. That is, the charging profile information of the charging process includes: charging start time information and charging end time information.

[0146] S803. Statistically record the maximum and minimum values ​​of various data in the charging process data.

[0147] S804: Determine charging statistics of the charging process according to the maximum and minimum values ​​of various types of data.

[0148] The AC analysis and diagnosis results also include: charging reason information, charging overview information and charging statistics information.

[0149] In one possible implementation, the maximum and minimum values ​​of various data in the charging process data are statistically recorded to improve the performance of the AC charging data analysis equipment, and then according to the maximum and minimum values ​​of various data in the charging process data, various data failures are prevented, the charging process is optimized, and data-driven decision support is provided based on the maximum and minimum values ​​of various data in the charging process data. Then, the charging statistics of the charging process are determined based on the maximum and minimum values ​​of various data.

[0150] The AC charging data analysis method provided in the embodiment of the present application determines the charging reason information of the charging process according to the second charging guide amplitude; determines the charging time information of the charging process according to the time when the preset charging entry condition is met and the time when the preset charging exit condition is met, and generates the charging overview information of the charging process; statistically records the maximum and minimum values ​​of various types of data in the charging process data; determines the charging statistics of the charging process according to the maximum and minimum values ​​of various types of data, and the AC analysis diagnosis results also include: charging reason information, charging overview information and charging statistics information. Therefore, the present application can analyze the abnormal data in various types of data according to the records of the maximum and minimum values ​​of various types of data in the charging process, and determine the possible fault types and error causes in combination with the local historical abnormal records (such as the abnormal case library of electric vehicle charging) or the cases in the cloud database, thereby improving the safety and efficiency of charging.

[0151] To facilitate understanding of the above-mentioned AC charging data analysis method, the embodiment of the present application further provides an example of a process of an AC charging data analysis method, which is described below in conjunction with the accompanying drawings. Fig.10 A schematic diagram of a method for analyzing AC charging data provided in an embodiment of the present application Figure 7 .like Fig.10 As shown, the schematic diagram provided by the embodiment of the present application Figure 7 This may include:

[0152] S901. Perform a self-check according to a first charging guidance parameter.

[0153] Specifically, the first charging guide electrical parameter before charging, such as the electrical signal on the CP line, is obtained through the sampling unit to see whether the first charging guide electrical parameter has reached the preset charging entry condition (such as the first charging guide amplitude is in the preset charging guide amplitude range (such as 6V±0.8V), and the first charging guide frequency is in the preset charging guide frequency range (such as 1000Hz±30Hz)), so as to judge whether the charging gun head and the charging gun seat are connected, and then serve as the condition for starting the charging process. That is, the first charging guide amplitude is in the preset charging guide amplitude range (such as 6V±0.8V), and the first charging guide frequency is in the preset charging guide frequency range (such as 1000Hz±30Hz), which meets the preset charging entry condition, and the charging process can be started. At the same time, the charging start time is recorded.

[0154] S902: Acquire charging process data sampled by a sampling unit during the charging process.

[0155] Specifically, the charging process data sampled by the sampling unit during the charging process is obtained through multiple electrical parameter sensors and multiple temperature sensors in the AC charging data analysis device. For example, power electrical parameters, such as electrical parameters collected on lines A, B, and C (such as current signals and voltage signals), charging control electrical parameters collected on the first signal line (CC line), charging guide electrical parameters collected on the second signal line (CP line) (such as charging guide amplitude, charging guide frequency, charging guide amplitude, charging guide duty cycle, etc.), and the socket temperature of the AC socket and the gun tip temperature of the AC gun tip.

[0156] It should be noted that, in acquiring the charging process data sampled by the sampling unit during the charging process, it is also necessary to statistically record the maximum and minimum values ​​of various types of data in the charging process data.

[0157] S903: Perform a self-check according to the second charging guidance electrical parameter.

[0158] Specifically, the second charging guidance electrical parameter before charging is obtained through the sampling unit to determine whether the second charging guidance amplitude exceeds the preset charging guidance amplitude range (such as 6V±0.8V); and determine whether the second charging guidance frequency exceeds the preset charging guidance frequency range (such as 1000Hz±30Hz). If these two conditions are met at the same time, that is, if the second charging guidance amplitude exceeds the preset charging guidance amplitude range (such as 6V±0.8V), and the second charging guidance frequency exceeds the preset charging guidance frequency range (such as 1000Hz±30Hz), it is determined that the second charging guidance electrical parameter meets the above range and meets the preset charging exit condition, and the charging process can be terminated, and the charging end time is recorded; if one of these two conditions is not met, the charging exit operation is not performed.

[0159] S904: Obtain an AC analysis diagnosis result during the charging process according to the second charging guidance electrical parameter and the power electrical parameter.

[0160] Specifically, if the second charging guide electrical parameter meets the preset charging end condition, and the preset charging end condition is exceeding the preset charging entry condition, that is, the second charging guide electrical parameter exceeds 6V±0.8V, it means that the current charging process is ended, and then the charging end time is determined; and according to the charging process data before the charging end time, for example, according to the second charging guide amplitude in the charging process, the change of the second charging guide amplitude in the charging process is determined to determine whether the second signal line (such as the CP line) has a charging guide line break fault, for example, if the second charging guide amplitude is 0V, it means that the second signal line (such as the CP line) has a charging guide line break fault, and then the first line break detection information is obtained. And / or according to the charging voltage parameter in the charging process, the change of the charging voltage parameter in the charging process is determined to determine whether the power line (such as the A / B / C / N / PE line) has a voltage over-limit problem, for example, if the charging voltage parameter is greater than the preset charging voltage, it means that the power line (such as the A / B / C / N / PE line) has a voltage over-limit problem, and then the voltage over-limit detection information is obtained. And / or according to the charging guidance duty cycle during the charging process, the corresponding relationship between the preset charging current and the duty cycle is used to calculate the target charging current and the power electrical parameter, and compared with the preset charging current and the preset power electrical parameter to determine whether there is a current over-limit problem in the charging process, and then obtain the current over-limit detection information. And / or according to the charging control amplitude during the charging process, determine the change of the charging control amplitude during the charging process to determine whether there is a charging control disconnection fault in the first signal line (such as CC). For example, if the charging control amplitude is 0V, it means that there is a charging control disconnection fault in the first signal line (such as CC), and then obtain the second disconnection detection information. And / or according to the first charging guidance electrical parameter and the second charging guidance electrical parameter, respectively generate the charging guidance information before charging and the charging guidance information after charging in the charging process, so as to judge the state of the second signal line (such as CP line) in the charging process, such as normal state or abnormal state, according to the charging guidance information before charging and the charging guidance information after charging in the charging process. Then, a charging compliance diagnosis result is generated according to the pre-charging charging guidance information, the post-charging charging guidance information, the first disconnection detection information, the second disconnection detection information, the voltage over-limit detection information and the current over-limit detection information.

[0161] Alternatively, the time when a preset charging entry condition is satisfied and the time when a preset charging exit condition is satisfied are used to determine the charging time information of the charging process and generate the charging overview information of the charging process.

[0162] That is, the AC analysis diagnosis results during the charging process may include: electrical compliance diagnosis results and charging profile information.

[0163] The AC charging data analysis method provided in the embodiment of the present application performs self-checking according to the first charging guide electrical parameter; obtains the charging process data sampled by the sampling unit during the charging process; performs self-checking according to the second charging guide electrical parameter; then obtains the AC analysis diagnosis result during the charging process according to the second charging guide electrical parameter and the power electrical parameter, and then locates the fault corresponding to the AC analysis diagnosis result based on the AC analysis diagnosis result during the charging process, and gives the countermeasures and causes of the fault condition through the local historical abnormal records or cloud database. Therefore, the AC charging data analysis method provided in the present application can be used by car companies or pile companies in the research and development stage or road testing, without destroying the existing charging environment, to obtain the charging data of electric vehicles and AC charging piles and the AC analysis diagnosis results, and finally generate an AC analysis diagnosis report for reference by R&D or after-sales personnel to help them quickly locate faults and solve problems. Improve the stability, efficiency, safety and reliability of the AC charging data analysis system during the charging and discharging operation process.

[0164] Based on the same inventive concept, an AC charging data analysis device is also provided in the embodiment of the present application. Since the principle of solving the problem by the device in the embodiment of the present application is similar to the above-mentioned AC charging data analysis method in the embodiment of the present application, the implementation of the device can refer to the implementation of the method, and the repeated parts will not be repeated.

[0165] Fig.11 This is a schematic diagram of the structure of an AC charging data analysis device provided in an embodiment of the present application. Fig.11 As shown, the AC charging data analysis device 1000 is applied to an AC charging data analysis device, and the AC charging data analysis device 1000 may include:

[0166] A first acquisition module 1001 is used to acquire a first charging guidance electrical parameter before charging;

[0167] The second acquisition module 1002 is used to acquire charging process data during the charging process if the first charging guidance electrical parameter meets the preset charging entry condition, and the charging process data at least includes: the second charging guidance electrical parameter and the power electrical parameter;

[0168] The analysis module 1003 is used to obtain an AC analysis diagnosis result during the charging process according to the second charging guidance electrical parameter and the power electrical parameter.

[0169] In an optional embodiment, the first charging guide electrical parameter includes: a first charging guide amplitude, a first charging guide frequency; the second acquisition module 1002 is also used to: determine whether the first charging guide amplitude is within a preset charging guide amplitude range; determine whether the first charging guide frequency is within a preset charging guide frequency range; if the first charging guide amplitude is within the preset charging guide amplitude range, and the first charging guide frequency is within the preset charging guide frequency range, it is determined that the preset charging entry condition is met.

[0170] In an optional embodiment, the second charging guide electrical parameter includes: a second charging guide amplitude, a second charging guide frequency; the analysis module 1003 is also used to: determine whether the second charging guide amplitude exceeds a preset charging guide amplitude range; determine whether the second charging guide frequency exceeds a preset charging guide frequency range; if the second charging guide amplitude exceeds the preset charging guide amplitude range, and the second charging guide frequency exceeds the preset charging guide frequency range, it is determined that the preset charging exit condition is met.

[0171] In an optional embodiment, the power electrical parameters include: charging voltage parameters; an analysis module 1003, which is specifically used to: determine whether there is a charging guide line break during the charging process according to the second charging guide amplitude during the charging process, and obtain first line break detection information; determine whether there is a voltage over limit during the charging process according to the charging voltage parameters of the charging process, and obtain voltage over limit detection information; generate a charging compliance diagnosis result of the charging process according to the first line break detection information and the voltage over limit detection information, and the AC analysis diagnosis result includes: a charging compliance diagnosis result.

[0172] In an optional embodiment, the second charging guidance electrical parameter also includes: a charging guidance duty cycle, and the power electrical parameter also includes: a charging current parameter; the analysis module 1003 is also used to: calculate the target charging current according to the charging guidance duty cycle, using the correspondence between the preset charging current and the duty cycle; determine whether there is a current overlimit in the charging process according to the target charging current and the power electrical parameter, and obtain current overlimit detection information; generate a charging compliance diagnosis result of the charging process according to the first line break detection information, the voltage overlimit detection information and the current overlimit detection information.

[0173] In an optional embodiment, the charging process data also includes: a charging control amplitude; the AC charging data analysis device 1000 is also used to: determine whether there is a charging control disconnection during the charging process according to the charging control amplitude during the charging process, and obtain second disconnection detection information; the analysis module 1003 is specifically used to: generate a charging compliance diagnosis result of the charging process according to the first disconnection detection information, the second disconnection detection information and the voltage over-limit detection information.

[0174] In an optional embodiment, the AC charging data analysis device 1000 is also used to: generate pre-charging charging guidance information and post-charging charging guidance information of the charging process according to the first charging guidance electrical parameter and the second charging guidance electrical parameter; the analysis module 1003 is specifically used to: generate a charging compliance diagnosis result of the charging process according to the pre-charging charging guidance information, the post-charging charging guidance information, the first disconnection detection information and the voltage over-limit detection information.

[0175] In an optional implementation, the analysis module 1003 is further used to: determine the charging reason information of the charging process according to the second charging guide amplitude; determine the charging time information of the charging process according to the time when a preset charging entry condition is satisfied and the time when a preset charging exit condition is satisfied, and generate the charging overview information of the charging process; statistically record the maximum and minimum values ​​of various types of data in the charging process data; determine the charging statistical information of the charging process according to the maximum and minimum values ​​of various types of data, and the AC analysis diagnosis results also include: charging reason information, charging overview information and charging statistical information.

[0176] The above modules may be one or more integrated circuits configured to implement the above methods, such as one or more application specific integrated circuits (ASICs), or one or more microprocessors, or one or more field programmable gate arrays (FPGAs). For another example, when a module is implemented in the form of a processing element scheduling program code, the processing element may be a general-purpose processor, such as a central processing unit (CPU) or other processor that can call program code. For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).

[0177] Optionally, the embodiment of the present application also provides a processing unit. Fig.12 This is a schematic diagram of the structure of a processing unit provided in an embodiment of the present application. Fig.12 As shown, the processing unit 130 may include: a processor 131 and a memory 132 .

[0178] The memory 132 stores machine executable instructions that can be executed by the processor 131, that is, when the AC charging data analysis device 100 is running, the above machine readable instructions are executed, and the processor 131 communicates with the memory 132 via a bus. The processor 131 can execute the machine executable instructions to implement the AC charging data analysis method.

[0179] Among them, the memory 132, the processor 131 and the bus elements are electrically connected to each other directly or indirectly to realize data transmission or interaction. For example, these elements can be electrically connected to each other through one or more communication buses or signal lines. The mobile storage device includes at least one software function module that can be stored in the memory 132 in the form of software or firmware or solidified in the operating system (OS) of the electronic device. The processor 131 is used to execute the executable modules stored in the memory 132, such as the software function modules and computer programs included in the AC charging data analysis method of the mobile storage medium.

[0180] Optionally, the embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the processor executes the steps of the AC charging data analysis method for a mobile storage medium in the above embodiment. The specific implementation method and technical effect are similar and will not be repeated here.

[0181] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0182] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for analyzing AC charging data, characterized in that: Applied to an AC charging data analysis device, the method comprises: Acquiring a first charging guide electrical parameter before charging; If the first charging guidance electrical parameter meets the preset charging entry condition, then acquiring charging process data during the charging process, the charging process data at least including: a second charging guidance electrical parameter and a power electrical parameter; An AC analysis diagnosis result during the charging process is obtained according to the second charging guidance electrical parameter and the power electrical parameter.

2. The AC charging data analysis method according to claim 1, characterized in that: The first charging guidance electrical parameters include: a first charging guidance amplitude and a first charging guidance frequency; If the first charging guidance electrical parameter satisfies a preset charging entry condition, before acquiring charging process data during the charging process, the method further includes: determining whether the first charging guide amplitude is within a preset charging guide amplitude range; Determining whether the first charging guide frequency is within a preset charging guide frequency range; If the first charging guide amplitude is within the preset charging guide amplitude range, and the first charging guide frequency is within the preset charging guide frequency range, it is determined that the preset charging entry condition is met.

3. The AC charging data analysis method according to claim 1, characterized in that: The second charging guidance electrical parameters include: a second charging guidance amplitude and a second charging guidance frequency; Before performing analysis and diagnosis according to the second charging guidance electrical parameter and the power electrical parameter to obtain an AC analysis and diagnosis result during the charging process, the method further includes: determining whether the second charging guide amplitude exceeds a preset charging guide amplitude range; Determining whether the second charging guide frequency exceeds a preset charging guide frequency range; If the second charging guide amplitude exceeds the preset charging guide amplitude range, and the second charging guide frequency exceeds the preset charging guide frequency range, it is determined that the preset charging exit condition is met.

4. The AC charging data analysis method according to claim 3, characterized in that: The power electrical parameters include: charging voltage parameters; The performing analysis and diagnosis according to the charging process data and the power electrical parameters to obtain the AC analysis and diagnosis result during the charging process includes: determining, according to the second charging guide amplitude during the charging process, whether there is a charging guide disconnection during the charging process, and obtaining first disconnection detection information; Determining whether there is voltage over-limit in the charging process according to the charging voltage parameter of the charging process, and obtaining voltage over-limit detection information; A charging compliance diagnosis result of the charging process is generated according to the first disconnection detection information and the voltage over-limit detection information, and the AC analysis diagnosis result includes: the charging compliance diagnosis result.

5. The AC charging data analysis method according to claim 4, characterized in that: The second charging guidance electrical parameter also includes: charging guidance duty cycle, and the power electrical parameter also includes: charging current parameter; The performing analysis and diagnosis according to the charging process data and the power electrical parameters to obtain an AC analysis and diagnosis result during the charging process also includes: According to the charging guidance duty cycle, a target charging current is calculated by using a correspondence between a preset charging current and a duty cycle; Determine whether there is a current overlimit in the charging process according to the target charging current and the power electrical parameter, and obtain current overlimit detection information; A charging compliance diagnosis result of the charging process is generated according to the first disconnection detection information, the voltage over-limit detection information, and the current over-limit detection information.

6. The AC charging data analysis method according to claim 4, characterized in that: The charging process data also includes: a charging control amplitude; the method also includes: determining, according to the charging control amplitude during the charging process, whether there is a charging control disconnection during the charging process, and obtaining second disconnection detection information; The generating, according to the first disconnection detection information and the voltage over-limit detection information, a charging compliance diagnosis result of the charging process includes: A charging compliance diagnosis result of the charging process is generated according to the first disconnection detection information, the second disconnection detection information, and the voltage over-limit detection information.

7. The AC charging data analysis method according to claim 4, characterized in that: The method further comprises: Generating pre-charging guidance information and post-charging guidance information of the charging process respectively according to the first charging guidance electrical parameter and the second charging guidance electrical parameter; The generating, according to the first disconnection detection information and the voltage over-limit detection information, a charging compliance diagnosis result of the charging process includes: A charging compliance diagnosis result of the charging process is generated according to the pre-charging charging guidance information, the post-charging charging guidance information, the first disconnection detection information, and the voltage over-limit detection information.

8. An AC charging data analysis device, characterized in that: The AC charging data analysis device comprises: an AC socket, an AC gun head, a processing unit, a sampling unit and a plurality of electrical parameter sensors; The AC socket is used to connect an AC charging device, the AC gun head is used to connect an electric vehicle, the AC power pins of the AC socket are connected to the AC power pins of the AC gun head through corresponding power lines, the charging control pin of the AC socket is connected to the charging control pin of the AC gun head through a first signal line, and the charging guide pin of the AC socket is connected to the charging guide pin of the AC gun head through a second signal line; Wherein, corresponding electrical parameter sensors are respectively arranged on the power line, the first signal line and the second signal line, and the plurality of electrical parameter sensors are all connected to the sampling unit, and the sampling unit is connected to the processing unit to respectively sample the power electrical parameters on the power line, the charging control amplitude on the first signal and the charging guide amplitude on the second signal line; The second signal line is also connected to the processing unit to obtain the charging guidance frequency and duty cycle of the second signal line; The processing unit is used to execute the AC charging data analysis method described in any one of claims 1 to 7 above.

9. The AC charging data analysis device according to claim 8, characterized in that: The AC charging data analysis device also includes: multiple temperature sensors, at least one temperature sensor is provided on the AC socket, and at least one temperature sensor is also provided on the AC gun head. The multiple temperature sensors are connected to the sampling unit to sample the socket temperature of the AC socket and the gun head temperature of the AC gun head.

10. An AC charging data analysis system, characterized in that: include: The AC charging data analysis device, AC charging device and electric vehicle according to any one of claims 8 to 9; Wherein, the charging gun head of the AC charging device is connected to the AC socket of the AC charging data analysis device; the AC gun head of the AC charging data analysis device is connected to the charging socket of the electric vehicle; The AC charging data analysis device is used to execute the AC charging data analysis method described in any one of claims 1 to 7 above.

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