Remote charging management method, system and terminal of vehicle-mounted battery

Abstract

The invention discloses a remote charging management method and system for a vehicle-mounted battery and a terminal. The method comprises the following steps: storing an association relationship between battery charging data and battery charging completion degree; collecting charging data at a first sampling frequency and estimating charging completion time; sending confirmation information to the mobile terminal at a set moment before the charging completion time; determining a turn-off mode of the generator based on feedback information of the mobile terminal; acquiring battery charging data in real time at a second sampling frequency in an automatic mode, and outputting a control signal to control the running state of the generator; in the manual mode, charging data are collected in real time at a third sampling frequency, the operation state of the generator is controlled according to feedback information of the mobile terminal, and the second sampling frequency is smaller than the first sampling frequency and the third sampling frequency. According to the scheme, the probability that the generator is mistakenly turned off due to data disturbance in the charging process can be reduced, stable charging is ensured, and meanwhile a user does not need to go to the site to carry out related control operation.

Description

Technical Field

[0001] The present invention relates to the technical field of on-vehicle battery charge and discharge management, and more specifically, it relates to a remote charging management method, system and terminal for on-vehicle batteries. Background Art

[0002] An off-grid power generation system refers to a power supply system that can be separated from the external power grid and independently realizes power generation, energy storage and output. Currently, with the rise of projects such as outdoor live broadcasts and camping charging, on-vehicle off-grid systems have received increasing attention. An on-vehicle off-grid system mainly consists of a power generation module, an off-grid inverter, an energy storage module and a load. The power generation module usually uses generators, photovoltaic modules, etc., and the energy storage module often uses on-vehicle energy storage batteries. When the system works, the electric energy generated by the generator or photovoltaic module is inverted and then output to the energy storage battery for storage, and then supplied to various loads through different voltage output interfaces.

[0003] Currently, when using a generator to charge an on-vehicle energy storage battery, users often need to monitor the progress of battery charging by themselves. When the energy storage battery is fully charged, it is necessary to manually turn off the generator or cut off the connection between the generator and the on-vehicle energy storage battery to avoid overcharging, which is inconvenient to operate. If a simple charging automatic feedback control method is used, that is, when the battery is fully charged, an automatic feedback signal is output to control the generator to shut down, it is easy to cause the generator to accidentally shut down due to battery power monitoring deviation or feedback signal error.

[0004] Therefore, how to ensure that the generator can stably charge the on-vehicle energy storage battery while eliminating the need for users to go to the site for relevant control operations is an urgent problem to be solved in the current on-vehicle off-grid energy storage battery charging, and it is also the key to improving the user experience. Summary of the Invention

[0005] Aiming at the problem that it is impossible to combine remote control and stable charging when using a generator to charge an on-vehicle energy storage battery in practical applications, a first object of this application is to propose a remote charging management method for on-vehicle batteries, which analyzes the charge and discharge curve of the battery, estimates the battery charging duration, notifies the user in advance at a set time, and determines the later generator shutdown mode based on the user feedback, thereby realizing stable charging of the energy storage battery without the user going to the site to control the shutdown of the generator. To implement the above charging management method, a second object of this application is to propose a remote charging management system for on-vehicle batteries, which can realize the above remote charging management of on-vehicle batteries and is also easy to expand. A third object of this application is to provide a remote charging management terminal for on-vehicle batteries, which can be flexibly applied to the current on-vehicle off-grid system and is used to realize remote precise control of on-vehicle battery charging. The specific solutions are as follows: A remote charging management method for on-vehicle batteries, comprising: Establish and store the association relationship between battery charging data and battery charging completion degree; Collect and store charging data at the first sampling frequency, obtain and estimate the charging completion time based on the current charging data; Send a confirmation message to the mobile terminal at a set moment before the charging completion time; Determine the generator shutdown mode based on the feedback information of the mobile terminal: Automatic mode, collect battery charging data in real time at the second sampling frequency, and when the charging data indicating the completion of battery charging is detected, output a control signal to turn off the generator or disconnect the connection between the generator and the energy storage battery; Manual mode, collect battery charging data in real time at the third sampling frequency, and when the charging data indicating the completion of battery charging is detected, output an instruction request message to the mobile terminal, and control the shutdown of the generator or the disconnection of the connection between the generator and the energy storage battery based on the instruction information fed back by the mobile terminal; Wherein, the second sampling frequency, the first sampling frequency and the third sampling frequency increase in sequence; The charging data includes charging current data and battery voltage data.

[0006] Through the above technical solution, in the early stage of charging, the system collects charging data at the first sampling frequency with a lower sampling frequency and estimates the charging completion time, and then sends a confirmation message to the user's mobile terminal at a set moment before the charging completion to confirm, notifying the user of the charging process while obtaining the user's feedback to determine the subsequent generator shutdown mode. When the automatic mode is adopted, the second sampling frequency is used, that is, the sampling frequency of the charging data is lower, so as to reduce the probability of the generator shutting down due to charging data disturbance during charging, and ensure that the energy storage battery can still be charged normally and stably in the later stage of charging. When the manual mode is adopted, the association between the real-time charging data and the generator operation state is directly cut off. At this time, the charging data is directly collected at a higher sampling frequency. When the charging data indicating the completion of battery charging is detected, the generator is controlled to shut down by sending instruction information through the user's mobile terminal. Thus, while avoiding overcharging of the battery, the charging stability in the later stage of battery charging is also ensured.

[0007] Further, establishing and storing the association relationship between battery charging data and battery charging completion degree includes: Obtain the battery historical charging data and its corresponding charging duration data, and associate and store the two to form a theoretical charge-discharge curve; Obtain the battery charge-discharge attenuation data and its corresponding usage duration data and charging environment parameters, and associate and store the three to form a theoretical attenuation curve; Obtain and generate a theoretical charging reference curve based on the current usage duration of the battery and charging environment parameters, and in combination with the theoretical attenuation curve and theoretical charge-discharge curve, and store it in association with the battery ID; The obtaining and estimating the charging completion time based on the current charging data includes: Based on the currently obtained charging data and the charging data previously stored, fit and generate a real-time charging curve; Obtain the ID information of the current battery and retrieve the corresponding theoretical charging reference curve to compare with the current real-time charging curve, generate the duration required for charging, and calculate the charging completion time; Among them, the charging environment parameters include the temperature of the battery body and the surrounding environment during charging.

[0008] Through the above technical solution, when calculating the remaining charging duration of the battery, the environmental factors of the battery during charging and the attenuation factors of the battery itself are fully considered, making the estimation of the battery charging duration more accurate. Therefore, the confirmation information can be sent to the mobile terminal at a more appropriate and accurate time point, which helps to improve the stability of subsequent battery charging.

[0009] Further, the remote charging management method further includes: Obtain and store in association the theoretical charging reference curves corresponding to the battery charging under different charging modes and different charging environment parameters; Obtain the current battery charging mode, charging environment parameters, and real-time charging curve; Compare the real-time charging curve with the theoretical charging reference curve corresponding to the current charging mode and charge-discharge environment conditions: If the difference between the two exceeds the first set range, output an alarm message to the mobile terminal, and obtain the feedback information of the mobile terminal to adjust the start-stop state of the generator or the battery charging mode; If the difference between the two exceeds the second set range, control the generator to stop charging, and output an alarm message to the mobile terminal; Among them, the charging mode includes a high-power DC charging mode, a low-power AC charging mode, or a time-sharing charging combination of the two.

[0010] Through the above technical solution, when the system detects a difference between the battery charging curve and the theoretical charging reference curve, it can timely notify the user to adjust the battery charging mode or turn off the generator. When the system detects a serious deviation between the battery charging curve and the theoretical charging reference curve, the generator is automatically disconnected from the energy storage battery to avoid serious consequences caused by abnormal charging, and at the same time notify the user of the real-time state of the generator or the battery, improving the safety of the battery charging process.

[0011] Further, the remote charging management method further includes: Establish and store the association relationship between the number of batteries and the charging gating mode; Detect and confirm the number of batteries connected to the current generator and the charging status of each battery; Determine the charging gating mode based on the instruction information of the mobile terminal or select the charging gating mode according to the default setting; Among them, the charging gating mode includes: Sort the batteries according to the time when each battery establishes a charging connection with the generator and charge them in sequence; Sort the batteries according to the current remaining power levels of the batteries connected to the generator and charge them in sequence; or Sort the batteries according to the charging duration required by the batteries connected to the generator and charge them in sequence; or Set the charging priority for each battery, and sort the batteries according to the charging priority order of the batteries connected to the generator and charge them in sequence.

[0012] Through the above technical solution, when there are multiple energy storage batteries connected to the generator for charging at the same time, the charging order of each battery can be managed according to the user's selection or default setting.

[0013] Further, sending a confirmation message to the mobile terminal at a set moment before the charging completion time includes: Obtain the charging data characterizing the completion of battery charging according to the generated theoretical charging reference curve, and store it as a threshold K for triggering the stop of charging value , Based on the real-time charging curve generated by fitting, calculate the fluctuation range of the battery charging data, and store the maximum fluctuation value K of the charging data max , Based on the current real-time charging curve, calculate the time when the charging data reaches K Target to obtain the set moment; Among them, K Target =K value -K max ; The parameters used to calculate the fluctuation range of the battery charging data are the charging current value, the battery voltage value, or a weighted combination value of the two.

[0014] Since there will be fluctuations in the charging current and battery voltage during battery charging, through the above technical solution, it is possible to effectively avoid misjudgment caused by fluctuations in the charging current or battery voltage during charging, ensure that the generator will not stop power supply due to the above disturbances, and there will be no overcharging of the battery, ensuring the smooth progress of battery charging.

[0015] Further, the remote charging management method further includes: Establish an association relationship between the request for the mobile terminal to confirm an action and a specific point or trend on the battery charging curve; Based on the current real-time charging curve, estimate and generate the request for the mobile terminal to confirm the action associated with the subsequent charging process, generate a set of request action instructions and temporarily store them; Obtain and monitor the network communication status between the mobile terminal and the charging site terminal in real time; When the network communication strength value is lower than the set value, send the current set of request action instructions to the mobile terminal; Confirm various control instructions in the subsequent charging process according to the feedback information of the mobile terminal on the above set of request action instructions.

[0016] Through the above technical solution, according to the charging situation reflected by the real-time charging curve in advance, the information that needs to be confirmed by the mobile terminal in the subsequent charging process can be integrated and stored, and sent to the mobile terminal in advance when the network communication status is poor. Later, according to the instruction information fed back by the mobile terminal in advance, the state of the generator is adjusted to avoid overcharging of the battery or premature shutdown of the generator caused by the communication interruption between the charging site terminal and the mobile terminal.

[0017] Further, determining the generator shutdown mode based on the feedback information of the mobile terminal includes: Store the communication address information of at least two mobile terminals and sort them; Start timing from the time when the confirmation information is sent. If the feedback information of the current mobile terminal is not received within the set time, send a new confirmation information to the next mobile terminal according to the sorting of the mobile terminals and start timing again; If the duration from the first sending of the confirmation information to the current moment exceeds the set value, the default generator shutdown mode is the automatic mode.

[0018] Through the above technical solution, when the charging site terminal cannot contact the initially set mobile terminal, the confirmation information can be sent to the standby mobile terminal.

[0019] To implement the above remote charging management method for in-vehicle batteries, the present application also proposes a remote charging management system for in-vehicle batteries, including: A communication unit configured to implement a communication connection between the mobile terminal and the charging site terminal; A mobile terminal configured to output and display the real-time charging status and information to be confirmed of the energy storage battery, and output confirmation information based on user operations; The charging site terminal: includes: A data acquisition unit configured to collect and output battery charging data and the charging environment parameters of the charging site terminal based on a selected sampling frequency; A data storage unit configured to associate and store the correspondence between a battery ID and its charging data and the battery charging completion degree, and the charging data; A charging duration estimation unit configured to receive the current battery charging data and estimate the battery charging completion time by combining the correspondence between the battery charging data and the battery charging completion degree; A mode confirmation unit configured to communicate with a mobile terminal and a generator, send a confirmation message to the mobile terminal at a set moment before the charging completion time, and then receive and determine the generator shutdown mode according to the feedback information of the mobile terminal; A charging execution unit configured to be controllably connected to the generator control end, receive the output signal of the mode confirmation unit, and determine the generator shutdown mode: Automatic mode: Real-time collect battery charging data at a second sampling frequency. When charging data indicating battery charging completion is detected, output a control signal to turn off the generator or disconnect the connection between the generator and the energy storage battery; Manual mode: Real-time collect battery charging data at a third sampling frequency. When charging data indicating battery charging completion is detected, output an instruction request message to the mobile terminal, and control the shutdown of the generator or the disconnection of the connection between the generator and the energy storage battery based on the instruction information fed back by the mobile terminal; Wherein, the second sampling frequency, the first sampling frequency, and the third sampling frequency increase in sequence; The charging data includes charging current data and battery voltage data.

[0020] Furthermore, a theoretical charging reference curve corresponding to the battery charging under different charging modes and different charging environment parameters is also associated and stored in the data storage unit; The charging site end further includes a charging warning unit configured to obtain the current battery charging mode, charging environment parameters, and real-time charging curve, and compare the real-time charging curve with the theoretical charging reference curve corresponding to the current charging mode and charge and discharge environment conditions: If the difference between the two exceeds a first set range, output a warning message to the mobile terminal, and obtain the feedback information of the mobile terminal to adjust the start-stop state of the generator or the battery charging mode; If the difference between the two exceeds a second set range, control the generator to stop charging and output a warning message to the mobile terminal; Wherein, the real-time charging curve is generated by fitting the currently obtained charging data and the previously stored charging data.

[0021] Finally, the present application also provides a remote charging management terminal for vehicle-mounted batteries, including: a display, a memory, a processor, and a program module stored in the memory and executable on the processor. When the program module is executed, it is used to implement the steps of the remote charging management method for vehicle-mounted batteries as described above.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: In the later stage of battery charging, the system can collect charging data at a lower data sampling frequency according to the user's selection, thereby reducing the probability of the generator being wrongly shut down caused by data disturbance. While ensuring that the generator can stably charge the vehicle-mounted energy storage battery, it is not necessary for the user to go to the site for relevant control operations. In addition, by analyzing the charging data of each energy storage battery, the system can accurately estimate the battery charging completion time, and thus send a confirmation message to the user's mobile terminal at an appropriate time to ensure that the battery can stop charging in time after being fully charged. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is an overall schematic diagram of the remote charging management method for vehicle-mounted batteries of the present invention; Figure 2 is a schematic diagram of the battery charging curve; Figure 3 is a schematic diagram of the method for obtaining the time to send a confirmation message to the mobile terminal; Figure 4 is a schematic diagram of the functional module framework of the remote charging management system of the present application.

[0024] Reference numerals: 100, mobile terminal; 200, communication unit; 300, charging site terminal; 310, data storage unit; 320, data acquisition unit; 330, charging duration estimation unit; 340, mode confirmation unit; 350, charging execution unit; 360, charging warning unit; 400, cloud server. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following further describes the present application in detail in conjunction with embodiments and the accompanying drawings, but the embodiments of the present application are not limited thereto.

[0026] A remote charging management method for vehicle-mounted batteries, as Figure 1 shown, mainly includes the following steps: S100, establish and store the correlation between battery charging data and battery charging completion degree; S200, collect and store charging data at a first sampling frequency, and obtain and estimate the charging completion time based on the current charging data; S300, send a confirmation message to the mobile terminal at a set time before the charging completion time; S400, determine the generator shutdown mode based on the feedback information of the mobile terminal: Automatic mode, collect battery charging data in real time at the second sampling frequency. When the charging data indicating the completion of battery charging is detected, output a control signal to turn off the generator or disconnect the connection between the generator and the energy storage battery; Manual mode, collect battery charging data in real time at the third sampling frequency. When the charging data indicating the completion of battery charging is detected, output an instruction request message to the mobile terminal, and control the shutdown of the generator or the disconnection of the connection between the generator and the energy storage battery based on the instruction information fed back by the mobile terminal.

[0027] Among them, the second sampling frequency, the first sampling frequency, and the third sampling frequency increase in sequence.

[0028] In the above step S100, the charging data of the battery mainly includes charging current data and battery voltage data. Combined with Figure 2 As shown, usually during the charging process of an ion battery, both the voltage and charging current of the battery will change with the charging time. For example, the charging curve of a lithium battery usually includes three stages: constant current charging stage, constant voltage charging stage, and hysteresis charging stage. Generally speaking, only by knowing the battery charging current and battery voltage data, the charging status and charging completion degree of the battery can be known. Step S100 is to store the above two data in association to facilitate the subsequent evaluation of the charging completion degree of the energy storage battery.

[0029] In specific practice, it is found that for the same energy storage battery, different charging data will be obtained in different charge and discharge environments. At the same time, the charging data of the same energy storage battery will also change after being used for different durations, such as longer charging time and lower charging efficiency.

[0030] In order to reduce the influence of the above-mentioned energy storage battery aging or charge and discharge environment change on the evaluation of the current battery charge and discharge duration, specifically, in step S100 of the embodiment of the present application, further including establishing and storing the association relationship between the battery charging data and the battery charging completion degree: S110, obtain the battery historical charging data and its corresponding charging duration data, and store the two in association to form a theoretical charge and discharge curve; S120, obtain the battery charge and discharge attenuation data, its corresponding usage duration data, and charging environment parameters, and store the three in association to form a theoretical attenuation curve; S130, obtain and based on the current usage duration and charging environment parameters of the battery, combine the theoretical attenuation curve and the theoretical charge and discharge curve to generate a theoretical charging reference curve and store it in association with the battery ID; In the above sub-step S120, the battery charge and discharge attenuation data and its corresponding usage duration data are usually provided by the battery manufacturer or obtained based on the historical data analysis of the same model of battery. For the same type of battery used under different environmental conditions, the relationship between the above battery charge and discharge attenuation data and the usage duration is also fixed. The main purpose of the above step S120 is to store the theoretical attenuation curve of the battery under different environmental conditions and different usage durations. The specific manifestation in practice is that the charge and discharge curve will extend along the time axis, that is, the charging speed becomes slower.

[0031] In step S130, the current usage duration of the battery can be obtained through the system timing device. When the energy storage battery in the off-grid system is in the working state, the system records the usage time and stores it.

[0032] The charging environment parameters can collect the temperature data of the battery body and the surrounding environment through the temperature sensor configured at the charging site end or on the energy storage battery body. In a specific implementation manner, a humidity sensor, a vibration monitoring sensor, etc. can also be configured to collect data such as humidity data and battery vibration data.

[0033] After step S130, a theoretical charging reference curve for the current energy storage battery is finally obtained, and the above theoretical charging reference curve is associated and stored with the battery ID.

[0034] In the above step S200, obtaining and estimating the charging completion time based on the current charging data specifically includes: S210, based on the currently obtained charging data and the previously stored charging data, fitting to generate a real-time charging curve; S220, obtaining the ID information of the current battery, retrieving the corresponding theoretical charging reference curve and comparing it with the current real-time charging curve to generate the remaining duration required for charging completion, and calculating the charging completion time in combination with the current time.

[0035] In practical applications, only by matching the graphs of the real-time charging curve and the theoretical charging reference curve can the current charging stage of the battery be obtained. From the above process, it can be seen that the solution of this application fully considers the environmental factors and the attenuation factors of the battery itself during charging when calculating the remaining charging duration of the battery, making the estimation of the battery charging duration more accurate. Therefore, it is possible to send a confirmation message to the mobile terminal at a more appropriate and accurate time point, which helps to improve the stability of subsequent battery charging.

[0036] In the implementation manner of this application, the above mobile terminal includes but is not limited to a smart phone, a tablet computer, and a personal computer that have network communication functions and are loaded with a set APP.

[0037] In step S300, a confirmation message is sent to the mobile terminal at a set moment before the charging completion time, as Figure 3 shown, specifically including: S310, obtaining the charging data characterizing the completion of battery charging according to the generated theoretical charging reference curve, and storing it as a threshold K for triggering the stop of charging value . For example, when the charging current drops to 5% of the starting charging current, such as 40 mA, and the battery voltage reaches a set value, such as 4.5 V, it represents that the battery has completed charging. Then, the above charging current 40 mA and battery voltage 4.5 V are used as the threshold K for triggering the stop of charging value . Usually, in order to prevent overcharging of the battery, the detection of the above two parameters is completed through a battery voltage detection circuit.

[0038] S320, based on the real-time charging curve generated by fitting, calculating the fluctuation range of the battery charging data, and storing the maximum fluctuation value K of the charging data max . The maximum fluctuation value K for calculating the fluctuation range of the battery charging data max is a charging current value, a battery voltage value, or a weighted combination value of the two. For example, the real-time charging curve is a curve formed by fitting multiple charging data samples. During the actual charging process, the sampling values at some points may deviate greatly due to circuit disturbances or other factors. For example, the normal value of the battery voltage is 4.3 V, and the maximum fluctuation value K max of the battery voltage during charging is 0.2 V. At this time, if the threshold K value for triggering the stop of charging is 4.5 V, obviously, the above maximum fluctuation value K max will cause the system to misjudge the charging completion degree and even turn off the generator in advance.

[0039] Therefore, it is necessary to set a time in advance to determine the subsequent shutdown mode of the generator. In this application, the acquisition method of the above set moment is as follows: S330, based on the current real-time charging curve, calculating the time when the charging data reaches K Target , obtaining the set moment T, where K Target =K value -K max . From the above process, it can be seen that through the real-time charging curve, the time when the charging data reaches K Target can be estimated, and the above set moment T can be calculated by combining the current time. In practical applications, considering that there is a certain response delay in the mobile terminal, usually a set duration is advanced before the obtained set moment T as the final set moment.

[0040] As can be seen from the above process, through the above technical solution, misjudgment caused by fluctuations in the charging current or battery voltage during charging can be effectively avoided, ensuring that the generator does not stop power supply due to the above disturbances, and there will be no overcharging of the battery, guaranteeing the smooth progress of battery charging.

[0041] Obviously, during the entire charging process, when the energy storage battery is in the pre-charging state or constant current charging state, disturbances in the charging current or battery voltage are difficult to reach the threshold K for stopping charging. value , therefore, in practical applications, the first sampling frequency is higher than the second sampling frequency but lower than the subsequent third sampling frequency. When the fluctuation value of the charging current or battery voltage may affect the operating state of the generator, the system uses the second sampling frequency to sample and process the charging data in the automatic mode, thereby avoiding data disturbances as much as possible. In the manual mode, the third sampling frequency is used to sample and process the charging data. At this time, since the shutdown control of the generator is only associated with the mobile terminal, even if there are disturbances in the sampled data, it will not affect the operating state of the generator. Among them, in step S400, the second sampling frequency is lower than the third sampling frequency. In practice, the data collected at the second and third sampling frequencies will be averaged, that is, the data collected at the current moment is averaged with the set number of data collected before, and then the averaged value is used as the sampled value, thereby reducing the interference caused by the fluctuation of the charging data.

[0042] In the embodiment of the present application, preferably, the remote charging management method further includes: S510, obtaining the theoretical charging reference curve corresponding to the battery charging under different charging modes and different charging environment parameters and associating and storing them; S520, obtaining the current battery charging mode, charging environment parameters and real-time charging curve; S530, comparing the real-time charging curve with the theoretical charging reference curve corresponding to the current charging mode and charge and discharge environment conditions: S5401, if the difference between the two exceeds the first set range, output an alarm message to the mobile terminal, and obtain the feedback information of the mobile terminal to adjust the start-stop state of the generator or the battery charging mode; S5402, if the difference between the two exceeds the second set range, control the generator to stop charging and output an alarm message to the mobile terminal.

[0043] The difference between the above real-time charging curve and the theoretical charging reference curve includes the deviation degree of the curve, or the difference between the charging current or battery voltage corresponding to specific points on the curve.

[0044] The charging mode includes high-power DC charging mode or low-power AC charging mode, or a time-sharing charging combination of both, that is, charging is carried out in different modes at different times according to needs.

[0045] Based on the above technical solution, when the system detects a difference between the battery charging curve and the theoretical charging reference curve, it can promptly notify the user to adjust the battery charging mode or turn off the generator. When the system detects a serious deviation between the battery charging curve and the theoretical charging reference curve, the generator is automatically disconnected from the energy storage battery to avoid serious consequences caused by abnormal charging, and at the same time, the user is notified of the real-time status of the generator or battery, improving the safety of the battery charging process.

[0046] In actual applications, there is a situation where one generator supplies power to multiple energy storage batteries. At this time, a program-controlled selection switch is usually configured between the generator and the energy storage batteries, and any energy storage battery can be selected to be connected to the generator according to a control instruction.

[0047] Therefore, the remote charging management method described in this application further includes: S610, establishing and storing the association relationship between the number of batteries and the charging selection mode; S620, detecting and confirming the number of batteries connected to the current generator and the charging status of each battery; S630, determining the charging selection mode based on the instruction information of the mobile terminal or selecting it according to the default setting.

[0048] Among them, the charging selection mode described in step S610 includes: Sorting each battery according to the time when each battery establishes a charging connection with the generator and charging them in sequence; Sorting each battery according to the current remaining power of each battery connected to the generator and charging them in sequence; or Sorting each battery according to the required charging duration of each battery connected to the generator and charging them in sequence; or Setting a charging priority for each battery and sorting each battery according to the charging priority order of each battery connected to the generator and charging them in sequence.

[0049] Thus, when there are multiple energy storage batteries connected to the generator for charging at the same time, the charging order of each battery can be managed according to the user's selection or default setting.

[0050] In practical applications, factors affecting the remote charging of in-vehicle batteries, in addition to the battery or the generator itself, also include the network communication status between the charging site terminal and the mobile terminal. When the communication between the charging site terminal and the mobile terminal is interrupted, users often lose control over the working status of the generator. In the embodiments of the present application, when the network communication status between the charging site terminal and the mobile terminal is poor, corresponding control actions will be taken based on set rules, as follows: S710, establish an association relationship between the request for the mobile terminal to confirm an action and specific points or trends on the battery charging curve. The above request for the mobile terminal to confirm an action refers to: the charging site terminal sends a confirmation request message to the mobile terminal to obtain the instruction information of the mobile terminal, such as whether to change the charging mode, whether to cut off the electrical connection between the generator and the energy storage battery, etc. Combining Figure 2 As shown, the specific points on the above battery charging curve include, but are not limited to, the node where the battery charging stage transitions from the constant current charging stage to the constant voltage charging stage, and the specific trends on the battery charging curve include the slope of the charging current curve or the charging voltage curve reaching a set value.

[0051] S720, based on the current real-time charging curve, estimate and generate the request for the mobile terminal to confirm the action associated with the subsequent charging process, generate a set of request action instructions and temporarily store them. For example, if the current battery charging stage is already in the constant voltage charging stage, and the actions that need to be confirmed by the mobile terminal in the subsequent process include the battery charging mode and the generator shutdown mode, then the above two actions to be confirmed will be integrated into a set of request action instructions and temporarily stored.

[0052] S730, continuously obtain and monitor the network communication status between the mobile terminal and the charging site terminal: S741, if the network communication status between the mobile terminal and the charging site terminal is good, no operation is performed; S742, if the network communication strength value is lower than the set value, send the current set of request action instructions to the mobile terminal.

[0053] In the embodiments of the present application, the network communication in the above steps refers to the strength of the mobile communication network signal between the charging site terminal and the mobile terminal, such as the 5G signal strength.

[0054] S750, confirm the control instructions for the subsequent charging process according to the feedback information of the mobile terminal on the above set of request action instructions.

[0055] According to the charging situation reflected by the real-time charging curve in advance, the above technical solution can integrate and store the information that needs to be confirmed by the mobile terminal during the subsequent charging process, send it to the mobile terminal in advance when the network communication state is poor, and adjust the state of the generator according to the instruction information fed back by the mobile terminal in advance later, so as to avoid overcharging of the battery or premature shutdown of the generator caused by communication interruption between the charging site end and the mobile terminal.

[0056] In practical applications, a control connection between the generator and multiple mobile terminals can be established. Thus, when one of the mobile terminals is in a lost connection state, the shutdown mode of the generator can be selected through other mobile terminals. For this purpose, determining the generator shutdown mode based on the feedback information of the mobile terminal further includes: S410, storing the communication address information of at least two mobile terminals and sorting them according to priority. The above communication address information includes a mobile phone number or a registered account of a specific APP.

[0057] S420, start timing from when the confirmation information is sent. If the feedback information of the current mobile terminal is not received within the set time, send a new confirmation information to the next mobile terminal according to the sorting of the mobile terminals and start timing again.

[0058] S430, if the duration from the first sending of the confirmation information to the current moment exceeds the set value, the subsequent generator shutdown mode is defaulted to the automatic mode.

[0059] To implement the above method for remote charging management of in-vehicle batteries, an embodiment of the present application also discloses a system for remote charging management of in-vehicle batteries, as Figure 4 shown, mainly including: a mobile terminal 100, a communication unit 200, and a charging site end 300. The charging site end 300 further includes a data storage unit 310, a data acquisition unit 320, a charging duration estimation unit 330, a mode confirmation unit 340, and a charging execution unit 350.

[0060] The communication unit 200 is configured to be used to implement a communication connection between the mobile terminal 100 and the charging site end 300. In specific applications, it can be configured as a 5G communication module provided in the mobile terminal 100 and the charging site end 300.

[0061] The mobile terminal 100 is configured to output and display the real-time charging state and the information to be confirmed of the energy storage battery, and output confirmation information based on user operations. Specifically, it can be implemented by a smart phone or a tablet computer loaded with a set APP.

[0062] The data storage unit 310 includes a data memory provided in the charging site end 300, and is mainly configured to be used to associatively store the corresponding relationship between battery charging data and battery charging completion degree, and the charging data of each energy storage battery in each time period.

[0063] The data acquisition unit 320 is configured to acquire battery charging data based on a selected sampling frequency. For example, it acquires charging data at a first sampling frequency in the early stage of charging, and later acquires charging data at a second or third sampling frequency according to user selection. This is specifically implemented by using a current detection circuit arranged on the charging line or a battery voltage detection circuit arranged on the battery port. In addition, the data acquisition unit 320 is also equipped with a sensor assembly for acquiring charging environment parameters, such as a temperature sensor for acquiring the temperature of the battery body and / or the charging site environment. In a specific embodiment, the above data acquisition unit 320 is also equipped with a humidity sensor or a vibration monitoring sensor.

[0064] The charging duration estimation unit 330 is used to receive the current battery charging data, and in combination with the correspondence between the battery charging data stored in the data storage unit 310 and the battery charging completion degree, estimate the current battery charging completion time and output it.

[0065] The mode confirmation unit 340 is communicatively connected to the mobile terminal 100 via a mobile communication signal and is signal-connected to the generator control end. It sends a confirmation message to the mobile terminal 100 at a set moment before the charging completion time, and then receives and determines the generator shutdown mode according to the feedback information of the mobile terminal 100, and outputs a corresponding control signal to the generator.

[0066] The charging execution unit 350 is configured to be control-connected to the generator control end and signal-connected to the mode confirmation unit 340, and receives the output signal of the mode confirmation unit 340 to determine the generator shutdown mode.

[0067] Among them, the shutdown mode includes an automatic mode and a manual mode. When shutting down the generator in the automatic mode, the data acquisition unit 320 acquires battery charging data in real time at the second sampling frequency. When detecting the charging data indicating the completion of battery charging, it outputs a control signal to turn off the generator or cut off the connection between the generator and the energy storage battery. When shutting down the generator in the manual mode, the data acquisition unit 320 acquires battery charging data in real time at the third sampling frequency. When detecting the charging data indicating the completion of battery charging, it outputs an instruction request message to the mobile terminal 100, and controls the shutdown of the generator or the disconnection between the generator and the energy storage battery based on the instruction information fed back by the mobile terminal 100.

[0068] In practical applications, the above data storage unit 310, charging duration estimation unit 330, and mode confirmation unit 340 can be configured in the cloud server 400, which is convenient for data storage and retrieval, and also convenient for data processing.

[0069] In the embodiment of the present application, the data storage unit 310 is also associated with the storage of theoretical charging reference curves corresponding to the battery charging under different charging modes and different charging environment parameters.

[0070] The on-site charging terminal 300 further includes a charging warning unit 360 configured to obtain the current battery charging mode, charging environment parameters, and real-time charging curve, and compare the real-time charging curve with the theoretical charging reference curve corresponding to the current charging mode and charge-discharge environment conditions: if the difference between the two exceeds the first set range, an alarm message is output to the mobile terminal 100, and the feedback information of the mobile terminal 100 is obtained to adjust the start-stop state of the generator or the battery charging mode; if the difference between the two exceeds the second set range, the generator is controlled to stop charging, and an alarm message is output to the mobile terminal 100. Among them, the above real-time charging curve is generated by fitting the currently obtained charging data and the charging data previously stored.

[0071] Finally, the embodiment of the present application also discloses a remote charging management terminal for a vehicle-mounted battery, including a display, a memory, a processor, and a program module stored in the above memory and executable on the processor. When the program module is executed, it is used to implement the steps of the remote charging management method for the vehicle-mounted battery as described above.

[0072] In one embodiment, the above memory may be an internal storage unit of the above terminal, such as a hard disk or memory built into the terminal. In another embodiment, the above memory may be an external storage device of the terminal, such as a plug-in hard disk, smart memory card, secure digital card, or video memory card configured on the terminal, mainly used to store the program module for implementing the remote charging management method for the vehicle-mounted battery as described above.

[0073] The processor is a central processing unit, microprocessor, or other data processing chip configured in the terminal.

[0074] The display preferably adopts a touch display with touch interaction function, and may also be a liquid crystal display or an LED display, used to display a visual user interface.

[0075] The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A remote charging management method for a vehicle battery, characterized in that: include: Establishing and storing an association between battery charging data and battery charging completion degree; Collecting and storing charging data at a first sampling frequency, obtaining and estimating a charging completion time based on current charging data; Sending a confirmation message to the mobile terminal at a set time before the charging completion time; Determine the generator shutdown mode based on the feedback information from the mobile terminal: Automatic mode, real-time acquisition of battery charging data at a second sampling frequency, when charging data indicating completion of battery charging is detected, output a control signal to shut down the generator or cut off the connection between the generator and the energy storage battery; In manual mode, the battery charging data is collected in real time at a third sampling frequency. When charging data indicating that the battery charging is completed is detected, a command request message is output to the mobile terminal, and based on the command information fed back by the mobile terminal, the generator is controlled to be turned off or the connection between the generator and the energy storage battery is cut off; Wherein, the second sampling frequency, the first sampling frequency and the third sampling frequency increase in sequence; The charging data includes charging current data and battery voltage data.

2. The remote charging management method for a vehicle-mounted battery according to claim 1, characterized in that: Establish and store the association between battery charging data and battery charging completion, including: Obtain the battery's historical charging data and its corresponding charging time data, and store the two in association to form a theoretical charging and discharging curve; Obtain battery charge and discharge attenuation data and its corresponding usage time data and charging environment parameters, and store the three in association to form a theoretical attenuation curve; Obtain and generate a theoretical charging reference curve based on the current battery usage time and charging environment parameters, combined with the theoretical attenuation curve and the theoretical charge and discharge curve, and store it in association with the battery ID; The obtaining and estimating the charging completion time based on the current charging data includes: Based on the currently acquired charging data and the previously stored charging data, a real-time charging curve is generated by fitting; Get the ID information of the current battery and call up the corresponding theoretical charging reference curve to compare with the current real-time charging curve, generate the time required for charging, and calculate the charging completion time; The charging environment parameters include the temperature of the battery body and the surrounding environment during charging.

3. The remote charging management method for a vehicle-mounted battery according to claim 2, characterized in that: The remote charging management method further includes: Obtain theoretical charging reference curves corresponding to the battery charging under different charging modes and different charging environment parameters and store them in association; Obtain the current battery charging mode, charging environment parameters and real-time charging curve; Compare the real-time charging curve with the theoretical charging reference curve corresponding to the current charging mode and charging and discharging environment conditions: If the difference between the two exceeds a first set range, an alarm message is output to the mobile terminal, and feedback information from the mobile terminal is obtained to adjust the start / stop state of the generator or the battery charging mode; If the difference between the two exceeds a second set range, the generator is controlled to stop charging and an alarm message is output to the mobile terminal; The charging mode includes a high-power DC charging mode, a low-power AC charging mode or a time-sharing charging combination of the two.

4. The remote charging management method for a vehicle-mounted battery according to claim 3, characterized in that: The sending of confirmation information to the mobile terminal at a set time before the charging completion time includes: The charging data used to characterize the completion of battery charging is obtained according to the generated theoretical charging reference curve and stored as a threshold value K for triggering the stop of charging. value ; Based on the real-time charging curve generated by fitting, the fluctuation range of battery charging data is calculated, and the maximum fluctuation value K of the charging data is stored. max ; Based on the current real-time charging curve, the time when the charging data reaches KTarget is calculated to obtain the set time; Among them, K Target =K value -K max ; The parameter used to calculate the battery charging data fluctuation range is the charging current value, the battery voltage value or a weighted combination value of the two.

5. The remote charging management method for a vehicle-mounted battery according to claim 1, characterized in that: The remote charging management method further includes: Establishing and storing an association between the number of batteries and the charging gating mode; Detect and confirm the number of batteries currently connected to the generator and the charging status of each battery; Determine the charging gating mode based on the instruction information of the mobile terminal or select the charging gating mode according to the default setting; Wherein, the charging gating mode includes: The batteries are charged in sequence according to the time when each battery establishes a charging connection relationship with the generator; Sort and charge the batteries connected to the generator according to their current remaining power; or Sort and charge the batteries connected to the generator according to the charging time required; or A charging priority is set for each battery, and the batteries are sorted and charged in sequence according to the charging priority order of each battery connected to the generator.

6. The remote charging management method for a vehicle battery according to claim 2, characterized in that: The remote charging management method further includes: Establishing an association between the action of requesting the mobile terminal to confirm and a specific point or trend on the battery charging curve; Based on the current real-time charging curve, estimate and generate the request mobile terminal confirmation action associated with the subsequent charging process, generate a request action instruction set and temporarily store it; Acquire and monitor the network communication status between the mobile terminal and the charging site in real time; When the network communication strength value is lower than the set value, the current request action instruction set is sent to the mobile terminal; Various control instructions in the subsequent charging process are confirmed according to the feedback information of the mobile terminal to the above-mentioned request action instruction set.

7. The remote charging management method for a vehicle-mounted battery according to claim 1, characterized in that: The step of determining the generator shutdown mode based on the feedback information from the mobile terminal includes: storing and sorting communication address information of at least two mobile terminals; The time starts from when the confirmation message is sent. If no feedback information is received from the current mobile terminal within the set time, a new confirmation message is sent to the next mobile terminal according to the order of the mobile terminals and the time is restarted; If the time from the first sending of the confirmation message to the current moment exceeds the set value, the default generator shutdown mode is automatic mode.

8. A remote charging management system for a vehicle battery, characterized in that: include: A communication unit (200) configured to realize a communication connection between the mobile terminal (100) and the charging site terminal (300); A mobile terminal (100) configured to output and display the real-time charging status of the energy storage battery and information to be confirmed, and output confirmation information based on user operation; Charging field terminal (300): including: A data collection unit (320) configured to collect and output battery charging data and charging environment parameters of the charging field terminal (300) based on a selected sampling frequency; A data storage unit (310) configured to store a battery ID and its corresponding relationship with the battery charging completion degree and the charging data in association with each other; A charging time estimation unit (330) is configured to receive current battery charging data and estimate the battery charging completion time based on the corresponding relationship between the battery charging data and the battery charging completion degree; A mode confirmation unit (340) is configured to be connected to the mobile terminal (100) and the generator in communication, to send confirmation information to the mobile terminal (100) at a set time before the charging completion time, and then to receive and determine the generator shutdown mode according to the feedback information from the mobile terminal (100); The charging execution unit (350) is configured to be connected to the generator control terminal, receive the output signal of the mode confirmation unit (340), and determine the generator shutdown mode: Automatic mode, real-time acquisition of battery charging data at a second sampling frequency, when charging data indicating completion of battery charging is detected, output a control signal to shut down the generator or cut off the connection between the generator and the energy storage battery; In manual mode, battery charging data is collected in real time at a third sampling frequency, and when charging data indicating that battery charging is complete is detected, instruction request information is output to the mobile terminal (100), and based on the instruction information fed back by the mobile terminal (100), the generator is controlled to be turned off or the connection between the generator and the energy storage battery is cut off; Wherein, the second sampling frequency, the first sampling frequency and the third sampling frequency increase in sequence; The charging data includes charging current data and battery voltage data.

9. The remote charging management system for vehicle batteries according to claim 8, characterized in that: The data storage unit (310) also stores theoretical charging reference curves corresponding to the battery being charged in different charging modes and different charging environment parameters; The charging site terminal (300) further comprises a charging alarm unit (360) configured to obtain a current battery charging mode, charging environment parameters and a real-time charging curve, and compare the real-time charging curve with a theoretical charging reference curve corresponding to the current charging mode and charging and discharging environment conditions: If the difference between the two exceeds a first set range, an alarm message is output to the mobile terminal (100), and feedback information from the mobile terminal (100) is obtained to adjust the start / stop state of the generator or the battery charging mode; If the difference between the two exceeds a second set range, the generator is controlled to stop charging and an alarm message is output to the mobile terminal (100); The real-time charging curve is generated by fitting the currently acquired charging data and the previously stored charging data.

10. A remote charging management terminal for a vehicle battery, characterized in that: The terminal includes: a display, a memory, a processor, and a program module stored in the memory and executable on the processor. When the program module is executed, it is used to implement the steps of the remote charging management method for a vehicle battery as described in any one of claims 1 to 7.

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