Analog charging system

Abstract

The application relates to the technical field of new energy vehicles, and discloses a simulation charging system, wherein a control module obtains an actual charging capacity of a vehicle through a charging interface and establishes a vehicle charge change state diagram, a charging module carries out simulation charging according to the vehicle charge change state diagram, and a charge capacity of simulation charging is combined with a charging time to establish a vehicle simulation charging curve; a monitoring module is used for monitoring whether the vehicle simulation charging curve is in a safe range, wherein the safe range includes whether the simulation charging curve remains unchanged and / or tends to be in a stable state; when the vehicle simulation charging curve is outside the safe range, a charging buffer module carries out simulation charging according to the vehicle simulation charging curve. Maintenance personnel can obtain national standard data of a vehicle power battery through the simulation charging equipment, provide a reference for the maintenance personnel, reduce the cost of purchasing various different equipment, and improve work efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new energy vehicles, in particular to a simulation charging system. BACKGROUND

[0002] With the continuous improvement of people's environmental awareness, electric vehicles are more and more favored by people, and fast charging technology is also used by major automobile manufacturers due to its short charging time. Many electric vehicle manufacturers use power batteries with various types of connectors, different parameters, and maintenance personnel need to purchase various equipment to read vehicle power battery data, and fast charging technology makes some data of the power battery uniform due to the national standard (GBT 27930-2015 "Communication protocol between electric vehicle non-vehicle conductive charger and battery management system"). In the charging process, the charger obtains the data of the power battery through the communication of the fast charging interface and the battery management system (BMS) to control the charging process, and the process of obtaining the data of the power battery needs fast charging equipment and high-voltage power supply, which is extremely inconvenient. SUMMARY

[0003] The main purpose of the present application is to provide a simulation charging device to solve the technical problems existing in the prior art.

[0004] The present application provides a simulation charging system, which is connected with a vehicle through a charging interface, and the improvement lies in that it comprises a charging module, a control module, a charging buffer module, a monitoring module and an alarm module, the control module, the charging module, the monitoring module and the alarm module are electrically connected in sequence, and the charging buffer module is electrically connected with the monitoring module.

[0005] The control module obtains the real charging capacity of the vehicle through the charging interface and establishes a vehicle charge change state diagram, the charging module simulates charging according to the vehicle charge change state diagram, and combines the charge capacity of the simulated charging with the charging time to establish a vehicle simulation charging curve.

[0006] The monitoring module is used for monitoring whether the vehicle simulation charging curve is in a safe range, wherein the safe range includes whether the simulation charging curve remains unchanged and / or tends to be in a stable state, and when the vehicle simulation charging curve is outside the safe range, the charging buffer module simulates charging according to the vehicle simulation charging curve.

[0007] As a further improvement of the above technical solution, the monitoring module comprises a monitoring unit and a monitoring processing unit, the monitoring unit is electrically connected with the monitoring processing unit, and the monitoring unit is also electrically connected with the charging module.

[0008] The automobile simulation charging curve includes an initial charging curve, a continuous charging curve and an end charging curve, and the monitoring unit is used for monitoring whether the initial charging curve, the continuous charging curve and the end charging curve remain unchanged and / or tend to be stable.

[0009] The monitoring processing unit is used for sending a "automobile simulation charging curve out of safe range" signal to the charging buffer module.

[0010] As a further improvement of the above technical solution, the charging buffer module includes a first charging unit and a buffer processing unit, the buffer processing unit is connected with the first charging unit, and the buffer processing unit is also connected with the monitoring processing unit.

[0011] The buffer processing unit is used for receiving the "automobile simulation charging curve out of safe range" signal, and identifying any one or more than one automobile simulation charging curve out of the safe range according to the "automobile simulation charging curve out of safe range" signal.

[0012] The first charging unit simulates charging according to the automobile charge change state diagram.

[0013] As a further improvement of the above technical solution, the control module includes a control unit and a receiving unit, the receiving unit is connected with the automobile through a charging interface, and the receiving unit is also electrically connected with the control unit.

[0014] The receiving unit obtains automobile data through the charging interface, the automobile data includes automobile real charging capacity and corresponding automobile real charging time, and the control unit combines the automobile real charging capacity with the automobile real charging time to establish an automobile charge change state diagram.

[0015] As a further improvement of the above technical solution, a power module is further included, and the power module is used for power supply.

[0016] The application also proposes a data reading method based on automobile simulation charging state, which includes:

[0017] A charging handshake message is sent to the battery management system of the automobile through the charging interface to obtain the battery type, the battery capacity and the battery rated total voltage.

[0018] According to the battery type, the battery capacity and the battery rated total voltage, a time synchronization message is sent to the battery management system to obtain the automobile maximum current value and the automobile maximum voltage value to configure the simulation charging parameters, wherein after the simulation charging parameters are configured, the simulation charging preparation stage is entered.

[0019] sending a charging message to the battery management system, entering a car simulation charging phase, and generating a car simulation charging curve;

[0020] analyzing the car simulation charging curve to obtain car BMS data, wherein the car BMS data includes but is not limited to battery cell maximum voltage data, battery cell minimum voltage data, current voltage data, and rated total voltage data.

[0021] As a further improvement of the above technical solution, the step of analyzing the car simulation charging curve further comprises:

[0022] analyzing an initial charging curve of the car simulation charging curve;

[0023] analyzing a sustained charging curve of the car simulation charging curve;

[0024] analyzing an end charging curve of the car simulation charging curve.

[0025] As a further improvement of the above technical solution, the configuration of the charging parameters of the simulation charging system further comprises monitoring whether the battery management system is ready, and the monitoring method comprises:

[0026] sending a time synchronization message to the simulation charging device;

[0027] When the time synchronization message is sent for the first time, if the battery management system responds, the simulation charging phase is entered;

[0028] When the time synchronization message is sent for the first time, if the battery management system does not respond, the time synchronization message is continuously sent to the simulation charging device;

[0029] If the number of times of sending the time synchronization message is greater than a preset number of times, the battery management system does not respond, and / or an error message sent by the battery management system is received, the process is ended.

[0030] The application also provides a data reading device in a car simulation charging state, comprising:

[0031] a sending unit configured to send a charging handshake message to the car through a charging interface to obtain the battery type, battery capacity, and battery rated total voltage of the car;

[0032] a configuration unit configured to send a time synchronization message to the car according to the battery type, the battery capacity, and the battery rated total voltage, to obtain a car maximum current value and a car maximum voltage value, and to configure charging parameters of a simulation charging system;

[0033] A second charging unit is configured to send a charging message to the vehicle, enter a vehicle simulation charging phase, and generate a vehicle simulation charging curve.

[0034] A data processing unit is configured to analyze the vehicle simulation charging curve to obtain vehicle BMS data, wherein the vehicle BMS data includes but is not limited to battery cell maximum voltage data, battery cell minimum voltage data, current voltage data, and rated total voltage data.

[0035] As an improvement of the above technical solution, the method further comprises:

[0036] A first analysis unit is configured to analyze an initial charging curve of the vehicle simulation charging curve to obtain vehicle BMS data.

[0037] A second analysis unit is configured to analyze a continuous charging curve of the vehicle simulation charging curve to obtain vehicle BMS data.

[0038] A third analysis unit is configured to analyze an end charging curve of the vehicle simulation charging curve to obtain vehicle BMS data.

[0039] The application has the advantages that a maintenance personnel can obtain national standard data of a vehicle power battery through a reading device, provide a reference for the maintenance personnel, reduce the cost of purchasing various different devices, and improve work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 FIG. 1 is a structural framework diagram of a simulation charging system according to an embodiment of the application.

[0041] Figure 2 FIG. 2 is a flowchart of a method for reading data in a vehicle simulation charging state according to an embodiment of the application.

[0042] Figure 3 FIG. 3 is a structural framework diagram of a data reading device in a vehicle simulation charging state according to an embodiment of the application.

[0043] Figure 4 FIG. 4 is a schematic diagram of an internal structure of a computer device according to an embodiment of the application.

[0044] The implementation, functional features, and advantages of the application will be further described with reference to the embodiments and the accompanying drawings.

[0045] 1, charging module, 2, control module, 3, charging buffer module, 4, monitoring module, 5, alarm module, 6, power module;

[0046] 21, control unit, 22, receiving unit, 31, first charging unit, 32, buffer processing unit, 41, monitoring unit, 42, monitoring processing unit;

[0047] 100. Transmission unit; 200. Configuration unit; 300. Second charging unit; 400. Data processing unit; 500. First parsing unit; 600. Second parsing unit; 700. Third parsing unit. Detailed Implementation

[0048] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0049] Example 1

[0050] like Figure 1 As shown, this application discloses a simulated charging system. The simulated charging system is connected to a vehicle via a charging interface and includes a charging module 1, a control module 2, a charging buffer module 3, a monitoring module 4, an alarm module 5, and a power module 6. The power module 6 supplies power to the charging module, control module, charging buffer module, monitoring module, and alarm module. The control module 2, charging module 1, monitoring module 4, and alarm module 5 are electrically connected in sequence, and the charging buffer module 3 is electrically connected to the monitoring module 4. The control module 2 obtains the actual charging amount of the vehicle through the charging interface and establishes a vehicle charge change state diagram. The charging module 1 performs simulated charging according to the vehicle charge change state diagram and combines the simulated charging charge amount with the charging time to establish a vehicle simulated charging curve. The monitoring module 4 monitors whether the vehicle simulated charging curve is within a safe range, wherein the safe range includes whether the simulated charging curve remains unchanged and / or tends to a stable state. When the vehicle simulated charging curve is outside the safe range, the charging buffer module 3 performs simulated charging according to the vehicle simulated charging curve.

[0051] The control module 2 includes a control unit 21 and a receiving unit 22. The receiving unit 22 is connected to the vehicle through a charging interface and is also electrically connected to the control unit 21. The receiving unit 22 acquires vehicle data through the charging interface. The vehicle data includes the actual charge amount of the vehicle and the corresponding actual charging time. The control unit 21 combines the actual charge amount of the vehicle with the actual charging time to establish a vehicle charge change state diagram.

[0052] In the above embodiment, the simulation charging system is connected with the automobile through the charging interface, specifically, the receiving unit 22 is connected with the automobile through the charging interface, obtains the relevant information of the automobile, including the real charging quantity and the charging time of the automobile, the control unit 21 establishes the automobile charge change state diagram according to the real charging quantity and the charging time of the automobile, the charging module 1 carries out simulation charging according to the automobile charge change state diagram, and combines the simulation charging quantity with the charging time to establish the automobile simulation charging curve. Through the establishment of the automobile simulation charging curve, the automobile simulation charging curve includes the initial charging curve, the continuous charging curve and the end charging curve, and the information related to the automobile can be known from the side by reading the initial charging curve, the continuous charging curve and the end charging curve, such as the data of the automobile battery.

[0053] The monitoring module 4 includes a monitoring unit 41 and a monitoring processing unit 42, the monitoring unit 41 is electrically connected with the monitoring processing unit 42, and the monitoring unit 41 is also electrically connected with the charging module 1; the monitoring unit 41 is used for monitoring whether the initial charging curve, the continuous charging curve and the end charging curve remain unchanged and / or tend to be in a stable state; the monitoring processing unit 42 is used for sending the "automobile simulation charging curve is not in the safe range" signal to the charging buffer module.

[0054] The charging buffer module 3 includes a first charging unit 31 and a buffer processing unit 32, the buffer processing unit 32 is connected with the first charging unit 31, and the buffer processing unit 32 is also connected with the monitoring processing unit 42; the buffer processing unit 32 is used for receiving the "automobile simulation charging curve is not in the safe range" signal, and identifying the automobile simulation charging curve of any one or more than one of the initial charging curve, the continuous charging curve and the end charging curve exceeding the safe range according to the "automobile simulation charging curve is not in the safe range" signal; the first charging unit 31 carries out simulation charging according to the automobile charge change state diagram.

[0055] The simulation charging system of the application, in specific implementation, in order to avoid that the simulation charging device is not sensitive or the device is aging, and the simulation charging cannot be carried out due to sudden failure, the monitoring module 4 and the charging buffer module 3 are set up, the monitoring unit 41 of the monitoring module 4 is used for monitoring whether the automobile simulation charging curve is in a safe range, judging whether the charging buffer module 3 needs to supply power in time to maintain the charge change curve unchanged, if not in the safe range, immediately sending a signal that the charge change curve is not in the safe range, specifically, the monitoring unit 41 is used for monitoring whether the initial charging curve, the continuous charging curve and the end charging curve remain unchanged and / or tend to be in a stable state, if any one or more than one simulation curve of the initial charging curve, the continuous charging curve and the end charging curve is not in the safe range, the monitoring processing unit 42 sends a signal that the charge change curve is not in the safe range to the charging buffer module 3; the buffer processing unit 32 of the charging buffer module 3 is used for receiving the signal that the charge change curve is not in the safe range sent by the monitoring processing unit 42, and at the same time, simulating charging according to the automobile charge change state diagram to maintain the charge change curve in the safe range, facilitating reading data under the simulation state of the automobile. As long as the sensor in the monitoring unit 41 monitors that the charge change curve is not in the safe range, and the charging module 1 does not react, the charging buffer module 3 can be started immediately to supply power. The charging buffer module 3 responds in the shortest time, can simulate charging according to the automobile charge change state diagram in time, and is prepared for unexpected situations. It is worth noting that in order to ensure that the simulation charging process is not interrupted, the charging module 1 and the charging buffer module 3 need to be designed separately, and a plurality of simulation charging paths are provided, but in order to save materials and reduce the size of the device, the charging buffer module 3 and the charging module 1 can be combined in one body, that is, the charging buffer module 3 is designed as a unit module of the charging module 1, when the charge change curve is not in the safe range, the automobile is immediately simulated to supply power alone.

[0056] The process of supplying power by the simulation charging system is to enable simulation charging to obtain the parameter information of the automobile battery management system when power supply in the event of an emergency, such as the national standard data of the battery, so as to facilitate maintenance personnel to view and refer, reduce the cost of purchasing various maintenance equipment, and improve the work efficiency of the maintenance personnel.

[0057] Embodiment two

[0058] As Figure 2 shown, a method for reading data based on an automobile simulation charging state, comprising:

[0059] S1: sending a charging handshake message to a battery management system of the automobile through a charging interface to obtain a battery type, a battery capacity and a battery rated total voltage;

[0060] S2: sending a time synchronization message to the battery management system according to the battery type, the battery capacity and the battery rated total voltage to obtain an automobile maximum current value and an automobile maximum voltage value to configure an analog charging parameter, wherein after the analog charging parameter is configured, a simulation charging preparation stage is entered;

[0061] S3: sending a charging message to the battery management system to enter an automobile simulation charging stage and generate an automobile simulation charging curve;

[0062] S4: analyzing the automobile simulation charging curve to obtain automobile BMS data, wherein the automobile BMS data includes but is not limited to battery cell maximum voltage data, battery cell minimum voltage data, current voltage data and rated total voltage data.

[0063] The step of analyzing the automobile simulation charging curve further includes:

[0064] S5: analyzing an initial charging curve of the automobile simulation charging curve;

[0065] S6: analyzing a continuous charging curve of the automobile simulation charging curve;

[0066] S7: analyzing an end charging curve of the automobile simulation charging curve.

[0067] The charging parameter of the simulation charging system further includes monitoring whether the battery management system is ready, and the monitoring method includes:

[0068] S8: sending a time synchronization message to the simulation charging device;

[0069] S9: when the time synchronization message is sent for the first time, if the battery management system responds, the simulation charging stage is entered;

[0070] S10: when the time synchronization message is sent for the first time, if the battery management system does not respond, the time synchronization message is continuously sent to the simulation charging device;

[0071] S11: if the number of times of sending the time synchronization message is greater than a preset number of times, the battery management system does not respond, and / or an error message sent by the battery management system is received, the process is ended.

[0072] In the above embodiment, for steps S1-S11, the simulation charging system of the application sends a charging handshake message to the battery management system of the vehicle. When the battery management system receives the charging handshake message, it sends a "handshake success" signal to the simulation charging system. Since the simulation charging system is in a simulation charging state, the actual voltage value and current value are 0V, it is necessary to read the maximum current value of the vehicle and the maximum voltage value of the vehicle. When the simulation charging system receives the "handshake success" signal, it sends a time synchronization message to the battery management system to obtain the maximum current value of the vehicle and the maximum voltage value of the vehicle, so as to configure the charging parameters of the simulation charging system.

[0073] After the charging parameter configuration is completed, the battery management system sends a charging initial message, a charging continuous message and a charging end message. When the battery management system receives the charging initial message, the charging continuous message and the charging end message, it confirms that the battery management system is ready, and then the simulation charging system starts to simulate charging of the vehicle. The simulation charging system establishes a vehicle simulation charging curve according to the simulation charging amount and the simulation charging time. The vehicle simulation charging curve includes an initial charging curve, a continuous charging curve and an end charging curve. By analyzing the initial charging curve, the continuous charging curve and the end charging curve of the vehicle simulation charging curve, BMS (battery management system) data is obtained. The BMS data includes initial BMS data, continuous BMS data and end BMS data. The initial BMS data corresponds to the initial charging curve, the BMS data corresponds to the continuous charging curve, and the end BMS data corresponds to the end charging curve. From the initial BMS data, the continuous BMS data and the end BMS data, the data situation of the highest voltage data of the battery monomer, the lowest voltage data of the battery monomer, the current voltage data and the rated total voltage data can be obtained.

[0074] It is worth noting that during the charging process of the simulation charging system, the initial charging curve, the continuous charging curve and the end charging curve can be analyzed to obtain the initial BMS data, the continuous BMS data and the end BMS data, respectively. It is not necessary to wait until the entire charging is completed to obtain them. The purpose of doing so is to facilitate maintenance personnel to check the national standard data of the vehicle in the initial charging stage, the charging stage and the end charging stage during the simulation charging process. In fact, it is the highest voltage data of the battery monomer and the lowest voltage data of the battery monomer, or the voltage difference between the highest voltage data of the battery monomer and the lowest voltage data of the battery monomer, the voltage difference between the rated total voltage data and the current battery voltage data, etc. This not only reduces the cost of purchasing various maintenance equipment, but also improves the work efficiency of maintenance personnel.

[0075] Embodiment three

[0076] As Figure 3As shown, this application also discloses a data reading device for a car in a simulated charging state, comprising:

[0077] The sending unit 100 is used to send a charging handshake message to the vehicle through the charging interface to obtain the vehicle's battery type, battery capacity and battery rated total voltage.

[0078] Configuration unit 200 is used to send a time synchronization message to the vehicle according to the battery type, the battery capacity and the rated total voltage of the battery, and to obtain the maximum current value and the maximum voltage value of the vehicle in order to configure the charging parameters of the analog charging system.

[0079] The second charging unit 300 is used to send a charging message to the vehicle, enter the vehicle simulated charging stage, and generate a vehicle simulated charging curve.

[0080] The data processing unit 400 is used to analyze the simulated charging curve of the vehicle to obtain vehicle BMS data, wherein the vehicle BMS data includes, but is not limited to, the highest voltage data of the battery cell, the lowest voltage data of the battery cell, the current voltage data, and the rated total voltage data.

[0081] The first analysis unit 500 is used to analyze the initial charging curve of the simulated charging curve of the car to obtain the car BMS data.

[0082] The second analysis unit 600 is used to analyze the continuous charging curve of the simulated charging curve of the car to obtain the car BMS data.

[0083] The third analysis unit 700 is used to analyze the end charging curve of the simulated charging curve of the car to obtain the car BMS data.

[0084] The data reading device based on the simulated charging state of a car in this application also includes other method steps, which are described in detail in Embodiment 2 and will not be repeated here.

[0085] Example 4

[0086] like Figure 4 As shown, this application also provides a computer device, which can be a server, and its internal structure can be as follows: Figure 4The computer device shown in the figure includes a processor, a memory, a network interface and a database connected through a system bus. The processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operating system and the computer program in the non-volatile storage medium to run. The database of the computer device is configured to store all data required by the process of the method for reading data in a simulated charging state of an automobile. The network interface of the computer device is configured to communicate with an external terminal through a network connection. The computer program is executed by the processor to implement the method for reading data in a simulated charging state of an automobile.

[0087] Those skilled in the art can understand that, Figure 4 The structure shown in the figure is only a block diagram of part of the structure related to the scheme of the present application, and does not constitute a limitation on the computer device to which the scheme of the present application is applied.

[0088] The embodiment of the present application also provides a computer readable storage medium, which stores a computer program. The computer program is executed by the processor to implement any of the above-mentioned methods for reading data in a simulated charging state of an automobile.

[0089] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer readable storage medium. When the computer program is executed, it can include the processes of the above-mentioned embodiments. Any reference to the memory, storage, database or other medium provided by the present application and used in the embodiments can include non-volatile and / or volatile memory. The non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. The volatile memory can include random access memory (RAM) or external cache memory. As an illustration but not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (SSRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM) and memory bus dynamic RAM (RDRAM) and the like.

[0090] It should be noted that, in the present document, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises a", "comprising", or "comprises" does not, without further restriction, exclude the existence of additional elements of the process, method, article, or apparatus that comprises the element.

[0091] The above only describes the preferred embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An analog charging system that connects with a vehicle through a charging interface, characterized by, The charging module, the control module, the charging buffer module, the monitoring module and the alarm module are sequentially connected, and the charging buffer module is connected with the monitoring module. The control module obtains the real charging quantity of the automobile through the charging interface and establishes an automobile charge change state diagram, and the charging module simulates charging according to the automobile charge change state diagram and combines the simulated charging quantity with the charging time to establish an automobile simulated charging curve. The monitoring module is used for monitoring whether the automobile simulated charging curve is in a safe range, wherein the safe range includes whether the simulated charging curve remains unchanged and / or tends to be in a stable state, and when the automobile simulated charging curve is out of the safe range, the charging buffer module simulates charging according to the automobile simulated charging curve. The monitoring module includes a monitoring unit and a monitoring processing unit, and the monitoring unit is connected with the monitoring processing unit, and the monitoring unit is also connected with the charging module. The automobile simulated charging curve includes an initial charging curve, a continuous charging curve and an end charging curve, and the monitoring unit is used for monitoring whether the initial charging curve, the continuous charging curve and the end charging curve remain unchanged and / or tend to be in a stable state. The monitoring processing unit is used for sending a "automobile simulated charging curve not in a safe range" signal to the charging buffer module.

2. The analog charging system of claim 1, wherein, The charging buffer module includes a first charging unit and a buffer processing unit, and the buffer processing unit is connected with the first charging unit, and the buffer processing unit is also connected with the monitoring processing unit. The buffer processing unit is used for receiving the "automobile simulated charging curve not in a safe range" signal and identifying the automobile simulated charging curve which is out of the safe range among the initial charging curve, the continuous charging curve and the end charging curve according to the "automobile simulated charging curve not in a safe range" signal. The first charging unit simulates charging according to the automobile charge change state diagram.

3. The analog charging system of claim 1, wherein, The control module includes a control unit and a receiving unit, and the receiving unit is connected with the automobile through the charging interface, and the receiving unit is also connected with the control unit. The receiving unit obtains automobile data through the charging interface, and the automobile data includes real charging quantity and corresponding real charging time, and the control unit combines the real charging quantity with the real charging time to establish an automobile charge change state diagram.

4. The analog charging system of claim 1, wherein, It also includes a power module for power supply.

5. A method for reading data based on a car simulation charged state, characterized by, It includes: sending a charging handshake message to the battery management system of the automobile through the charging interface to obtain the battery type, the battery capacity and the battery rated total voltage; sending a time synchronization message to the battery management system according to the battery type, the battery capacity and the battery rated total voltage to obtain the maximum current value and the maximum voltage value of the automobile to configure the simulated charging parameters, wherein after configuring the simulated charging parameters, the simulated charging preparation stage is entered; sending a charging message to the battery management system to enter the automobile simulated charging stage and generate an automobile simulated charging curve; The automobile simulation charging curve is analyzed to obtain automobile BMS data, wherein the automobile BMS data includes battery cell maximum voltage data, battery cell minimum voltage data, current voltage data and rated total voltage data; The step of analyzing the automobile simulation charging curve further includes: analyzing an initial charging curve of the automobile simulation charging curve; analyzing a sustained charging curve of the automobile simulation charging curve; analyzing an ending charging curve of the automobile simulation charging curve.

6. A method for reading data based on car simulation in a charged state according to claim 5, characterized in that, The configuration of the simulation charging parameter further includes monitoring whether the battery management system is ready, and the monitoring method includes: sending a time synchronization message to the simulation charging device; when the time synchronization message is sent for the first time, if the battery management system responds, entering the simulation charging phase; when the time synchronization message is sent for the first time, if the battery management system does not respond, continuously sending the time synchronization message to the simulation charging device; if the number of times of sending the time synchronization message is greater than a preset number of times, the battery management system does not respond, and / or an error message sent by the battery management system is received, then the process is ended.

7. An automotive analog state of charge data reading device, comprising: including: a sending unit configured to send a charging handshake message to the automobile through a charging interface to obtain the battery type, battery capacity and battery rated total voltage of the automobile; a configuration unit configured to send a time synchronization message to the automobile according to the battery type, the battery capacity and the battery rated total voltage, to obtain the maximum current value and the maximum voltage value of the automobile, so as to configure the simulation charging parameter; a second charging unit configured to send a charging message to the automobile to enter the automobile simulation charging phase and generate an automobile simulation charging curve; a data processing unit configured to analyze the automobile simulation charging curve to obtain automobile BMS data, wherein the automobile BMS data includes battery cell maximum voltage data, battery cell minimum voltage data, current voltage data and rated total voltage data; The device further includes: a first analysis unit configured to analyze an initial charging curve of the automobile simulation charging curve to obtain automobile BMS data; a second analysis unit configured to analyze a sustained charging curve of the automobile simulation charging curve to obtain automobile BMS data; a third analysis unit configured to analyze an ending charging curve of the automobile simulation charging curve to obtain automobile BMS data.

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