A method and device for protecting a charging of a power battery of a vehicle, the power battery and the vehicle

Abstract

The application relates to a kind of automobile power battery charging protection method, device, power battery and automobile, the method is by obtaining the charging data of automobile power battery, wherein, charging data includes: charging interval power consumption, average plug-in charging duration, charging time average remaining power and capacity value, based on charging data, determine the charging parameter of automobile power battery, and determine the charging protection strategy through charging parameter, to charge protection strategy according to automobile power battery is charged, wherein, charging parameter includes: charging power, charging cutoff remaining power;The application charges, and automobile power battery is charged according to charging power and charging cutoff remaining power, to prevent overcharge in the charging process of automobile power battery, reduce the abnormal loss caused to new energy battery, with the effect of protecting automobile power battery.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle power battery technology, specifically to a charging protection method, device, power battery, and vehicle for automotive power batteries. Background Technology

[0002] With the rapid development of new energy vehicles, the lifespan of their power batteries and the prevention of thermal runaway have become key factors for consumers when purchasing vehicles. The lifespan of a new energy vehicle's power battery not only affects its power performance and driving range but also its residual value in secondary transactions. The lifespan of a new energy vehicle's power battery is related to its stored state of charge (SOC), battery temperature, cycle count, and depth of charge / discharge. Therefore, to prevent overheating, overcharging, or over-discharging of the power battery, which could lead to abnormal lifespan loss, relevant technologies have proposed strategies for protecting the lifespan of new energy vehicle power batteries.

[0003] For example, Chinese invention patent CN115508731A discloses a method for protecting battery life. This method aims to protect the lifespan of new energy vehicle power batteries by limiting the total daily mileage that users can drive. However, since different new energy vehicle users have different driving habits, limiting the total daily mileage does not suit their individual usage habits. Therefore, how to protect the lifespan of new energy vehicle power batteries while conforming to the driving habits of different users has become an urgent technical problem to be solved. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, this application provides a method, device, power battery and automobile for charging protection of automotive power batteries to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] According to one aspect of the embodiments of this application, a method for protecting the charging of an automotive power battery is provided. The method includes: acquiring charging data of the automotive power battery; wherein the charging data includes: power consumption during charging intervals, average charging time at the charging gun, average remaining power at the charging moment, and capacity value; determining charging parameters of the automotive power battery based on the charging data, and determining a charging protection strategy through the charging parameters, so as to protect the automotive power battery from charging according to the charging protection strategy; wherein the charging parameters include: charging power and remaining power at the charging cutoff.

[0007] In one embodiment of this application, the process of determining the charging parameters of the vehicle power battery based on the charging data includes: determining the remaining charge at the end of charging based on the average remaining charge at the charging time, the power consumption during the charging interval, and the capacity value, wherein the capacity value includes the capacity value at the start of the current charging phase or the capacity value at the end of the previous charging phase; and determining the charging power based on the remaining charge at the end of charging, the average charging time, the average remaining charge at the charging time, and the capacity value.

[0008] In one embodiment of this application, the process of determining a charging protection strategy through the charging parameters includes: using the remaining charge at the charging cutoff as a suggested value for the remaining charge at the charging cutoff, and using the charging power as a suggested value for the charging power; charging according to the suggested value for the remaining charge at the charging cutoff and the suggested value for the charging power, and determining a charging protection strategy during the charging process.

[0009] In one embodiment of this application, the process of charging according to the suggested remaining charge value and suggested charging power value, and determining the charging protection strategy during the charging process, includes: obtaining the real-time remaining charge and real-time charging power during the charging process; comparing the real-time remaining charge with the suggested remaining charge value and comparing the real-time charging power with the suggested charging power value; if the real-time remaining charge is greater than or equal to the suggested remaining charge value, then ending the charging process; if the real-time remaining charge is less than the suggested remaining charge value and the real-time charging power is greater than the suggested charging power value. If the real-time charging power is less than or equal to the recommended charging power value, the charging power is reduced until the remaining real-time charging power is greater than or equal to the recommended remaining charging power value, at which point the charging process ends. If the remaining real-time charging power is less than the recommended remaining charging power value and the real-time charging power is less than or equal to the recommended charging power value, charging continues at the real-time charging power until the remaining real-time charging power is greater than or equal to the recommended remaining charging power value, at which point the charging process ends. At least one of ending the charging process, reducing the real-time charging power, or continuing charging is used as the charging protection strategy.

[0010] In one embodiment of this application, the formula for calculating the remaining charge at the charging cutoff is: SOC_stop=(S2 / Q1)*100%+SOC_int, where SOC_stop is the remaining charge at the charging cutoff, S2 is the power consumption during the charging interval, Q1 is the capacity value, and SOC_int is the average remaining charge at the charging time; the formula for calculating the charging power is: P_charge=Q1*(SOC_stop-SOC_int) / h, where P_charge is the charging power, Q1 is the capacity value, SOC_int is the average remaining charge at the charging time, SOC_stop is the remaining charge at the charging cutoff, and h is the average charging time.

[0011] In one embodiment of this application, the charging process according to the suggested remaining charge value and the suggested charging power value before charging is completed further includes: recording the current charging data of the vehicle power battery; adding the current charging data to the charging data to update the charging data; and redetermining the charging parameters of the vehicle power battery based on the updated charging data.

[0012] In one embodiment of this application, before acquiring the charging data of the vehicle power battery, the vehicle power battery charging protection method includes: collecting the charging duration of each plug-in charging session, the remaining power at the initial moment of each charging session, the power consumption of each charging interval, the capacity retention rate, and the initial capacity of the vehicle power battery; taking the sum of the power consumption of all charging intervals within a preset time period as the cumulative power consumption, and taking the sum of all charging times within the preset time period as the cumulative charging times; calculating the average plug-in charging duration based on the charging duration of each plug-in charging session within the preset time period and the cumulative charging times; calculating the average remaining power at each charging moment based on the remaining power at the initial moment of each charging session within the preset time period and the cumulative charging times; calculating the power consumption of each charging interval based on the cumulative power consumption and the cumulative charging times; calculating the product of the capacity retention rate and the initial capacity to obtain the capacity value; and using the average plug-in charging duration, the power consumption of each charging interval, the average remaining power at each charging moment, and the capacity value as the charging data.

[0013] According to one aspect of the embodiments of this application, a vehicle power battery charging protection device is provided. The vehicle power battery charging protection device includes: a data acquisition module, used to acquire charging data of the vehicle power battery; wherein the charging data includes: power consumption during charging intervals, average charging time at the charging gun, average remaining power at the charging moment, and capacity value; and a strategy determination module, used to determine charging parameters of the vehicle power battery based on the charging data, and determine a charging protection strategy through the charging parameters, so as to perform charging protection on the vehicle power battery according to the charging protection strategy; wherein the charging parameters include: charging power and remaining power at the charging cutoff.

[0014] According to one aspect of the embodiments of this application, a power battery is provided, which is charged using the above-described automotive power battery charging protection method.

[0015] According to one aspect of the embodiments of this application, a vehicle is provided, the vehicle including the power battery described above.

[0016] The beneficial effects of this invention are as follows: This invention acquires charging data of the vehicle's power battery, determines the charging parameters of the power battery based on the charging data, and determines a charging protection strategy based on the charging parameters. This strategy protects the power battery during charging. During charging, the power battery is charged according to the charging protection strategy determined based on the charging power and the remaining charge at the charging cutoff point, thereby preventing overcharging and reducing abnormal losses to the battery, thus protecting it. Furthermore, when the charging data of the power battery changes, the charging protection strategy also changes accordingly. This allows for the development of charging protection strategies tailored to the different driving habits of different users, effectively reducing the rate of battery degradation in new energy vehicles. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings:

[0018] Figure 1 This is a schematic diagram illustrating an exemplary system architecture as shown in an exemplary embodiment of this application;

[0019] Figure 2 This is a flowchart illustrating an exemplary embodiment of the charging protection method for an automotive power battery, as shown in this application.

[0020] Figure 3 This is a flowchart illustrating the determination of charging parameters for an automotive power battery, as shown in an exemplary embodiment of this application.

[0021] Figure 4 This is a flowchart illustrating the updating of vehicle power battery charging parameters, as shown in an exemplary embodiment of this application.

[0022] Figure 5 This is a block diagram illustrating an exemplary embodiment of an automotive power battery charging protection device.

[0023] Figure 6 A schematic diagram of the structure of a computer system suitable for implementing the electronic device of the present application is shown. Detailed Implementation

[0024] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0025] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0026] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.

[0027] In this application, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0028] The technical solutions of this application relate to technologies such as charging protection of automotive power batteries, which are specifically illustrated through the following embodiments:

[0029] Figure 1This is a schematic diagram illustrating an exemplary system architecture as shown in an exemplary embodiment of this application.

[0030] Reference Figure 1 As shown, the system architecture may include a data acquisition device 101 and a computer device 102. The computer device 102 may be at least one of a desktop graphics processing unit (GPU) computer, a GPU computing cluster, or a neural network computer. Those skilled in the art can use the computer device 102 to determine the charging parameters of the vehicle's power battery based on charging data, and then determine a charging protection strategy based on these parameters to protect the vehicle's power battery during charging. The data acquisition device 101 is used to collect charging data. In this embodiment, the data acquisition device 101 uses a vehicle-mounted information terminal or similar device to collect the charging data and provides it to the computer device 102 for processing.

[0031] Indicatively, after acquiring the charging data from the data acquisition device 101, the computer device 102 determines the charging parameters of the vehicle's power battery based on the charging data, and determines a charging protection strategy based on the charging parameters. This strategy protects the vehicle's power battery during charging. During charging, the vehicle's power battery is charged according to the charging protection strategy determined based on the charging power and the remaining charge at the charging cutoff point. This prevents overcharging during charging, reduces abnormal losses to the new energy vehicle battery, and protects the vehicle's power battery. Furthermore, when the charging data of the vehicle's power battery changes, the charging protection strategy also changes accordingly. This allows for the development of charging protection strategies tailored to different users' driving habits, effectively reducing the rate of power battery degradation in new energy vehicles.

[0032] It should be noted that the automotive power battery charging protection method provided in this application embodiment is generally executed by computer equipment 102, and correspondingly, the automotive power battery charging protection device is generally installed in computer equipment 102.

[0033] The implementation details of the technical solutions in the embodiments of this application are described in detail below:

[0034] Figure 2 This is a flowchart illustrating an exemplary embodiment of an automotive power battery charging protection method. This method can be executed by a computational processing device, which may be... Figure 1 The computer device 102 shown is illustrated. (Refer to...) Figure 2 As shown, the automotive power battery charging protection method includes at least steps S210 to S220, which are described in detail below:

[0035] In step S210, the charging data of the vehicle's power battery is acquired.

[0036] In one embodiment of this application, the charging data includes: power consumption during charging intervals, average charging duration at the charging port, average remaining power at the charging moment, and capacity value. Before acquiring the charging data of the vehicle's power battery, the charging duration at each charging port, the remaining power at the initial moment of each charging, the power consumption during each charging interval, the capacity retention rate, and the initial capacity are collected. The sum of the power consumption of all charging intervals within a preset time period is taken as the cumulative power consumption, and the sum of all charging times within the preset time period is taken as the cumulative number of charging times. Based on the charging duration at each charging port and the cumulative number of charging times within the preset time period, the average charging duration is calculated. Based on the remaining power at the initial moment of each charging and the cumulative number of charging times within the preset time period, the average remaining power at the charging moment is calculated. Based on the cumulative power consumption and the cumulative number of charging times, the power consumption during charging intervals is calculated. The product of the capacity retention rate and the initial capacity is calculated to obtain the capacity value. The average charging duration at the charging port, the power consumption during charging intervals, the average remaining power at the charging moment, and the capacity value are used as the charging data.

[0037] In step S220, based on the charging data, the charging parameters of the vehicle power battery are determined, and a charging protection strategy is determined through the charging parameters, so as to protect the vehicle power battery by charging according to the charging protection strategy.

[0038] In this embodiment, the charging parameters include: charging power and remaining charge at the charging cutoff point. During charging, the vehicle's power battery is charged according to a charging protection strategy determined based on the charging power and remaining charge at the charging cutoff point. This prevents overcharging during the charging process, reduces abnormal losses to the new energy vehicle battery, and protects the vehicle's power battery. In addition, when the charging data of the vehicle's power battery changes, the charging protection strategy also changes accordingly. This allows for the development of charging protection strategies that conform to the driving habits of different users, effectively reducing the degradation rate of the new energy vehicle's power battery.

[0039] In one embodiment of this application, the process of determining the charging parameters of a vehicle's power battery based on charging data includes:

[0040] The remaining power at the end of the charging period is determined by combining the average remaining power at the charging time, the power consumption during the charging interval, and the capacity value.

[0041] In this embodiment, the capacity value includes the capacity value at the start of the current charging phase or the capacity value at the end of the previous charging phase. The formula for calculating the capacity value is as follows:

[0042] Q1 = Q0 * Y (Equation 1)

[0043] Where Q1 is the capacity value, Q0 is the initial capacity, and Y is the capacity retention rate.

[0044] In this embodiment, the capacity retention rate can be the capacity retention rate at the start of the current charging phase or the capacity retention rate at the end of the previous charging phase. If the initial capacity is multiplied by the capacity retention rate at the start of the current charging phase, the capacity value at the start of the current charging phase is obtained. If the initial capacity is multiplied by the capacity retention rate at the end of the previous charging phase, the capacity value at the end of the previous charging phase is obtained.

[0045] In this embodiment, the formula for calculating the remaining power after charging is stopped is:

[0046] SOC_stop=(S2 / Q1)*100%+SOC_int Formula (2)

[0047] Where SOC_stop is the remaining power at the end of charging, S2 is the power consumption during the charging interval, Q1 is the capacity value, and SOC_int is the average remaining power at the charging time.

[0048] The charging power is determined by combining the remaining power at the end of charging, the average charging time when plugged in, the average remaining power at the moment of charging, and the capacity value.

[0049] In this embodiment, the formula for calculating charging power is:

[0050] P_charge=Q1*(SOC_stop-SOC_int) / h Formula (3)

[0051] Where P_charge is the charging power, Q1 is the capacity value, SOC_int is the average remaining power at the charging moment, SOC_stop is the remaining power at the charging end, and h is the average charging time when plugged in.

[0052] In one embodiment of this application, the process of determining a charging protection strategy based on charging parameters includes:

[0053] The remaining battery level at the end of the charging cycle is used as the recommended value for the remaining battery level at the end of the charging cycle, and the charging power is used as the recommended value for the charging power.

[0054] In this embodiment, before using the remaining charge level as the suggested value for the remaining charge level and the charging power as the suggested value for the charging power, the charging power and the remaining charge level are sent to the vehicle controller. The charging power replaces the existing charging power in the vehicle controller, and the remaining charge level replaces the existing charging power in the vehicle controller.

[0055] In this embodiment, if the capacity value is the capacity value at the end of the previous charging stage, the calculated charging power and the remaining charge at the end of the charging stage can be sent to the vehicle controller before the current charging stage of the vehicle power battery begins, and the existing charging power and the existing remaining charge at the end of the charging stage in the vehicle controller can be replaced.

[0056] In this embodiment, if the capacity value is the capacity value at the start of the current charging phase, the calculated charging power and the remaining charge at the end of the charging phase can be sent to the vehicle controller after the start of the current charging phase of the vehicle power battery, and the existing charging power and the existing remaining charge at the end of the charging phase in the vehicle controller can be replaced.

[0057] Charge according to the recommended remaining charge and charging power values ​​before charging ends, and determine the charging protection strategy during the charging process.

[0058] In this embodiment, the process of charging according to the recommended remaining charge value and the recommended charging power value, and determining the charging protection strategy during the charging process, includes: obtaining the real-time remaining charge and the real-time charging power during the charging process; comparing the real-time remaining charge with the recommended remaining charge value and comparing the real-time charging power with the recommended charging power value; if the real-time remaining charge is greater than or equal to the recommended remaining charge value, then the charging process ends; if the real-time remaining charge is less than the recommended remaining charge value and the real-time charging power is greater than the recommended charging power value, then the real-time charging power is reduced so that the reduced real-time charging power is less than or equal to the recommended charging power value, until the real-time remaining charge is greater than or equal to the recommended remaining charge value, then the charging process ends; if the real-time remaining charge is less than the recommended remaining charge value and the real-time charging power is less than or equal to the recommended charging power value, then charging continues according to the real-time charging power until the real-time remaining charge is greater than or equal to the recommended remaining charge value; and at least one of ending the charging process, reducing the real-time charging power, and continuing charging is used as the charging protection strategy.

[0059] In one embodiment of this application, the process of charging according to the recommended remaining power value at charging cutoff and the recommended charging power value, and determining the charging protection strategy during the charging process includes:

[0060] Obtain the real-time remaining charge and real-time charging power during the charging process.

[0061] In this embodiment, the real-time remaining charge and real-time charging power during the charging process can be obtained through the battery management system.

[0062] The real-time remaining charge level is compared with the recommended remaining charge level before charging ends, and the real-time charging power is compared with the recommended charging power level.

[0063] In this embodiment, a charging protection strategy is determined based on the comparison between the real-time remaining charge and the suggested value of the remaining charge at the charging cutoff, as well as the comparison between the real-time charging power and the suggested value of the charging power. This strategy is used to protect the vehicle's power battery during charging, thereby preventing overcharging and reducing abnormal losses to the new energy battery, thus protecting the vehicle's power battery.

[0064] If the remaining charge level during real-time charging is greater than or equal to the recommended remaining charge level before charging ends, the charging process will end.

[0065] In this embodiment, if the remaining power during real-time charging is greater than or equal to the recommended remaining power at the charging cutoff point, it indicates that the remaining power during real-time charging has reached the recommended remaining power at the charging cutoff point. To avoid overcharging, the charging process is terminated.

[0066] If the remaining charge level during real-time charging is less than the recommended remaining charge level before charging ends, and the real-time charging power is greater than the recommended charging power level, then the real-time charging power will be reduced so that the reduced real-time charging power is less than or equal to the recommended charging power level, until the remaining charge level during real-time charging is greater than or equal to the recommended remaining charge level before charging ends, at which point the charging process will end.

[0067] In this embodiment, by adjusting the real-time charging power, the real-time charging power is prevented from exceeding the recommended charging power value during the charging process, thereby reducing abnormal losses caused by the new energy battery and protecting the vehicle's power battery.

[0068] If the remaining charge level during real-time charging is less than the recommended remaining charge level before charging ends, and the real-time charging power is less than or equal to the recommended charging power, then charging will continue at the real-time charging power until the remaining charge level during real-time charging is greater than or equal to the recommended remaining charge level before charging ends, at which point the charging process will end.

[0069] In this embodiment, if the remaining charge during real-time charging is less than the recommended remaining charge before charging is stopped and the real-time charging power is less than or equal to the recommended charging power, a protection strategy of continuing charging is adopted to charge the vehicle's power battery, thereby reducing abnormal losses to the new energy battery and protecting the vehicle's power battery.

[0070] The charging protection strategy will include at least one of the following: ending the charging process, reducing the real-time charging power, and continuing to charge.

[0071] In this embodiment, the vehicle power battery is charged by using at least one of the following charging protection strategies: ending the charging process, reducing the real-time charging power, and continuing to charge. This reduces abnormal losses to the new energy battery and protects the vehicle power battery.

[0072] In one embodiment of this application, the charging process according to the recommended remaining power value and the recommended charging power value before charging is completed further includes:

[0073] Records the current charging data of the vehicle's power battery.

[0074] In this embodiment, the current charging data includes the start time of the current charging phase, the end time of the current charging phase, the remaining power at the start time of the current charging phase, and the capacity retention rate at the start time of the current charging phase.

[0075] Add the current charging data to the charging data to update the charging data.

[0076] In this embodiment, after each charging cycle, the current charging data of the current charging stage is added to the charging data, thereby continuously updating the charging data.

[0077] Based on the updated charging data, the charging parameters of the vehicle's power battery were redefined.

[0078] In this embodiment, the updated charging data can better reflect the user's driving habits within a preset time period, thereby making the redefined charging parameters more accurate.

[0079] In one embodiment of this application, before acquiring the charging data of the vehicle's power battery, the vehicle's power battery charging protection method includes:

[0080] Collect data on the duration of each plug-in charging session of the vehicle's power battery, the remaining charge at the beginning of each charge, the power consumption during each charging interval, the capacity retention rate, and the initial capacity.

[0081] In this embodiment, the charging time of each plug-in charging session of the vehicle's power battery, the remaining power at the beginning of each charging session, the power consumption and capacity retention rate of each charging interval can be collected through devices such as in-vehicle information terminals. The initial capacity is the capacity of the vehicle's power battery at the time of manufacture.

[0082] The sum of the power consumption of all charging intervals within the preset time period is taken as the cumulative power consumption, and the sum of all charging times within the preset time period is taken as the cumulative charging times.

[0083] In this embodiment, the preset time period can be set according to the actual situation. For example, it can be set to one week or one month. There is no specific limitation here.

[0084] The average charging time is calculated based on the charging duration of each plug-in session and the cumulative number of charging sessions within a preset time period.

[0085] In this embodiment, the sum of the charging times of all plug-in guns within a preset time period is taken as the total charging time of the plug-in guns within the preset time period, and the ratio of the total charging time to the cumulative number of charging times is used to average the total charging time of the plug-in guns.

[0086] The average remaining power at each charging moment is calculated based on the remaining power at the initial moment of each charging session within a preset time period and the cumulative number of charging sessions.

[0087] In this embodiment, the sum of the remaining power at all initial charging moments within a preset time period is taken as the total remaining power at the initial charging moment within the preset time period, and the ratio of the total remaining power at the initial charging moment to the cumulative number of charging times is taken as the average remaining power at each charging moment.

[0088] The power consumption during the charging interval is calculated based on the cumulative power consumption and the cumulative number of charging cycles.

[0089] In this embodiment, the formula for calculating the power consumption during the charging interval is:

[0090] S2 = S1 / N (Equation 4)

[0091] Where S2 is the power consumption during the charging interval, S1 is the cumulative power consumption, and N is the cumulative number of charging cycles.

[0092] The capacity value is obtained by multiplying the capacity retention rate and the initial capacity.

[0093] In this embodiment, the capacity retention rate can be the capacity retention rate at the start of the current charging phase or the capacity retention rate at the end of the previous charging phase.

[0094] The average charging time, power consumption during charging intervals, and average remaining power and capacity at the moment of charging are used as charging data.

[0095] In this embodiment, the average charging time is used to reflect the average level of charging time within a preset time period, the power consumption during charging intervals is used to reflect the average level of power consumption during charging intervals within a preset time period, and the average remaining power at the charging moment is used to reflect the average level of remaining power at the charging moment within a preset time period. This makes the charging power and remaining power at the charging cutoff point more consistent with users' driving habits and improves the accuracy of determining charging parameters.

[0096] Figure 3 This is a flowchart illustrating the determination of charging parameters for an automotive power battery, as shown in an exemplary embodiment of this application. Figure 3As shown, the process of determining the charging parameters of the vehicle power battery includes: (1) collecting daily charging data of users: the user big data platform center pushes the battery life optimization function option and privacy notice through the vehicle terminal or vehicle-connected mobile phone software. After the user agrees to the pushed privacy service agreement and enables the power battery life protection function, the user's daily charging data can be collected through the vehicle information terminal. The user's daily charging data includes the average plug-in charging time, the average remaining power at the charging moment, the cumulative power consumption in a week, the cumulative number of charging times in a week, the capacity retention rate and the initial capacity; (2) calculating the capacity value and the power consumption during the charging interval. The capacity value is the product of the capacity retention rate and the initial capacity. The power consumption during the charging interval is the ratio of the cumulative power consumption in a week to the cumulative number of charging times in a week; (3) based on the average remaining power at the charging moment, the power consumption during the charging interval and the capacity value, the remaining power at the charging end is calculated and used as the recommended value of the remaining power at the charging end; (4) based on the remaining power at the charging end, the average plug-in charging time, the average remaining power at the charging moment and the capacity value, the charging power is calculated and used as the recommended value of the charging power.

[0097] Figure 4 This is a flowchart illustrating the updating of vehicle power battery charging parameters, as shown in an exemplary embodiment of this application. Figure 4 As shown, the process of updating the charging parameters of the vehicle's power battery includes: (1) pushing the power battery life protection mode option to the user terminal; (2) determining whether the user has enabled the power battery life protection mode option. If the user has enabled the power battery life protection mode option, the charging parameters of the vehicle's VCU (Vehicle Control Unit) are updated via OTA (Over-the-Air Technology). After the update, the charging power and remaining charge at the charging cutoff point in the vehicle's BMS (Battery Management System) are adjusted, and the adjusted charging power and remaining charge at the charging cutoff point are used as the suggested values ​​for charging power (P_charge) and remaining charge at the charging cutoff point (SOC_stop), respectively; (3) if the user has not enabled the power battery life protection mode option, the update of the vehicle's power battery charging parameters ends.

[0098] The following describes an embodiment of the apparatus described in this application, which can be used to execute the automotive power battery charging protection method described in the above embodiments of this application. For details not disclosed in the apparatus embodiments of this application, please refer to the embodiments of the automotive power battery charging protection method described above in this application.

[0099] Figure 5 This is a block diagram illustrating a charging protection device for an automotive power battery, as shown in an exemplary embodiment of this application. This device can be applied to… Figure 1The implementation environment shown is specifically configured in computer device 102. This device can also be applied to other exemplary implementation environments and specifically configured in other devices. This embodiment does not limit the implementation environment to which the device is applicable.

[0100] like Figure 5 As shown, this exemplary automotive power battery charging protection device includes:

[0101] The data acquisition module 501 is used to acquire the charging data of the vehicle's power battery.

[0102] The strategy determination module 502 is used to determine the charging parameters of the vehicle power battery based on the charging data, and to determine the charging protection strategy through the charging parameters, so as to protect the vehicle power battery by charging according to the charging protection strategy.

[0103] In one embodiment of this application, the charging data includes: power consumption during charging intervals, average charging duration at the charging port, average remaining power at the charging moment, and capacity value. Before acquiring the charging data of the vehicle's power battery, the charging duration at each charging port, the remaining power at the initial moment of each charging, the power consumption during each charging interval, the capacity retention rate, and the initial capacity are collected. The sum of the power consumption of all charging intervals within a preset time period is taken as the cumulative power consumption, and the sum of all charging times within the preset time period is taken as the cumulative number of charging times. Based on the charging duration at each charging port and the cumulative number of charging times within the preset time period, the average charging duration is calculated. Based on the remaining power at the initial moment of each charging and the cumulative number of charging times within the preset time period, the average remaining power at the charging moment is calculated. Based on the cumulative power consumption and the cumulative number of charging times, the power consumption during charging intervals is calculated. The product of the capacity retention rate and the initial capacity is calculated to obtain the capacity value. The average charging duration at the charging port, the power consumption during charging intervals, the average remaining power at the charging moment, and the capacity value are used as the charging data.

[0104] In this embodiment, the charging parameters include: charging power and remaining charge at the charging cutoff point. During charging, the vehicle's power battery is charged according to a charging protection strategy determined based on the charging power and remaining charge at the charging cutoff point. This prevents overcharging during the charging process, reduces abnormal losses to the new energy vehicle battery, and protects the vehicle's power battery. In addition, when the charging data of the vehicle's power battery changes, the charging protection strategy also changes accordingly. This allows for the development of charging protection strategies that conform to the driving habits of different users, effectively reducing the degradation rate of the new energy vehicle's power battery.

[0105] It should be noted that the automotive power battery charging protection device and the automotive power battery charging protection method provided in the above embodiments belong to the same concept. The specific operation methods of each module and unit have been described in detail in the method embodiments and will not be repeated here. In practical applications, the automotive power battery charging protection device provided in the above embodiments can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. This is not a limitation here.

[0106] The embodiments of this application also provide a power battery, which is charged using the automotive power battery charging protection method provided in the above embodiments.

[0107] Embodiments of this application also provide a vehicle, which includes the power battery provided in the above embodiments.

[0108] Embodiments of this application also provide an electronic device, including: one or more processors; and a storage device for storing one or more programs, which, when executed by one or more processors, cause the electronic device to implement the automotive power battery charging protection method provided in the above embodiments.

[0109] Figure 6 A schematic diagram of a computer system suitable for implementing the embodiments of this application is shown. It should be noted that... Figure 6 The computer system of the electronic device shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of this application.

[0110] like Figure 6 As shown, the computer system 600 includes a Central Processing Unit (CPU) 601, which can perform various appropriate actions and processes, such as executing the methods described in the above embodiments, based on a program stored in Read-Only Memory (ROM) 602 or a program loaded from Storage Section 608 into Random Access Memory (RAM) 603. The RAM 603 also stores various programs and data required for system operation. The CPU 601, ROM 602, and RAM 603 are interconnected via a bus 604. An Input / Output (I / O) interface 605 is also connected to the bus 604.

[0111] The following components are connected to I / O interface 605: an input section 606 including a keyboard, mouse, etc.; an output section 607 including a cathode ray tube (CRT), liquid crystal display (LCD), etc., and speakers, etc.; a storage section 608 including a hard disk, etc.; and a communication section 609 including a network interface card such as a LAN (Local Area Network) card, modem, etc. The communication section 609 performs communication processing via a network such as the Internet. A drive 610 is also connected to I / O interface 605 as needed. A removable medium 611, such as a disk, optical disk, magneto-optical disk, semiconductor memory, etc., is installed on drive 610 as needed so that computer programs read from it can be installed into storage section 608 as needed.

[0112] Specifically, according to embodiments of this application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program including a computer program for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via communication section 609, and / or installed from removable medium 611. When the computer program is executed by central processing unit (CPU) 601, it performs various functions defined in the system of this application.

[0113] It should be noted that the computer-readable medium shown in the embodiments of this application can be a computer-readable signal medium or a computer-readable storage medium, or any combination of the two. A computer-readable storage medium can be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), flash memory, optical fiber, portable compact disc read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this application, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, carrying a computer-readable computer program. Such propagated data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media can also be any computer-readable medium other than computer-readable storage media, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The computer program contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to wireless, wired, etc., or any suitable combination thereof.

[0114] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. Each block in a flowchart or block diagram may represent a module, segment, or portion of code, which contains one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram or flowchart, and combinations of blocks in a block diagram or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0115] The units described in the embodiments of this application can be implemented in software or hardware, and the described units can also be located in a processor. The names of these units do not necessarily limit the specific unit itself.

[0116] Another aspect of this application provides a computer-readable storage medium storing computer-readable instructions thereon. When these computer-readable instructions are executed by a computer's processor, the computer performs the automotive power battery charging protection method provided in the various embodiments described above. This computer-readable storage medium may be included in the electronic device described in the above embodiments, or it may exist independently and not be assembled into the electronic device.

[0117] It should be noted that although several modules or units for the device used to perform actions have been mentioned in the detailed description above, this division is not mandatory. In fact, according to the embodiments of this application, the features and functions of two or more modules or units described above can be embodied in one module or unit. Conversely, the features and functions of one module or unit described above can be further divided and embodied by multiple modules or units.

[0118] Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein can be implemented by software or by combining software with necessary hardware. Therefore, the technical solutions according to the embodiments of this application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, external hard drive, etc.) or on a network, including several instructions to cause a computing device (such as a personal computer, server, touch terminal, or network device, etc.) to execute the method according to the embodiments of this application.

[0119] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein.

[0120] It should be understood that the above content is only a preferred exemplary embodiment of this application and is not intended to limit the implementation of this application. Those skilled in the art can easily make corresponding modifications or alterations based on the main concept and spirit of this application. Therefore, the scope of protection of this application should be determined by the scope of protection claimed in the claims.

Claims

1. A method for protecting the charging of an automotive power battery, characterized in that, The vehicle power battery charging protection method includes: Acquire charging data of the vehicle's power battery; wherein, the charging data includes: power consumption during charging intervals, average charging time with plug-in gun, average remaining power and capacity value at the charging moment; Based on the charging data, the charging parameters of the vehicle's power battery are determined, and a charging protection strategy is determined using the charging parameters to protect the vehicle's power battery during charging. The charging parameters include: charging power and remaining charge at charging cutoff. The process of determining the charging parameters of the vehicle's power battery based on the charging data includes: determining the remaining charge at charging cutoff based on the average remaining charge at charging time, the power consumption during charging intervals, and the capacity value; and determining the charging power based on the remaining charge at charging cutoff, the average charging time, the average remaining charge at charging time, and the capacity value.

2. The method for protecting the charging of an automotive power battery according to claim 1, characterized in that, The capacity value includes the capacity value at the start of the current charging phase or the capacity value at the end of the previous charging phase.

3. The method for protecting the charging of an automotive power battery according to claim 1 or 2, characterized in that, The process of determining the charging protection strategy based on the charging parameters includes: The remaining charge at the charging cutoff point is used as the suggested value for the remaining charge at the charging cutoff point, and the charging power is used as the suggested value for the charging power. Charge according to the recommended remaining charge value and recommended charging power value before charging is completed, and determine the charging protection strategy during the charging process.

4. The method for protecting the charging of an automotive power battery according to claim 3, characterized in that, The process of charging according to the recommended remaining charge value and recommended charging power value at the charging cutoff, and determining the charging protection strategy during the charging process, includes: Obtain the real-time remaining charge and real-time charging power during the charging process; The real-time remaining charging power is compared with the suggested value of the remaining charging power before charging ends, and the real-time charging power is compared with the suggested value of the charging power. If the remaining power level during real-time charging is greater than or equal to the suggested value of the remaining power level before charging is stopped, then the charging process ends. If the real-time charging remaining power is less than the recommended value of the charging cutoff remaining power, and the real-time charging power is greater than the recommended value of the charging power, then the real-time charging power is reduced so that the reduced real-time charging power is less than or equal to the recommended value of the charging power, until the real-time charging remaining power is greater than or equal to the recommended value of the charging cutoff remaining power, and the charging process ends. If the real-time charging remaining power is less than the recommended value of the charging cutoff remaining power, and the real-time charging power is less than or equal to the recommended value of the charging power, then charging will continue according to the real-time charging power until the real-time charging remaining power is greater than or equal to the recommended value of the charging cutoff remaining power, and the charging process will end. The charging protection strategy includes at least one of ending the charging process, reducing the real-time charging power, and continuing to charge.

5. The method for protecting the charging of an automotive power battery according to claim 2, characterized in that, The formula for calculating the remaining power after charging is stopped is: SOC_stop=(S2 / Q1)*100%+SOC_int Where SOC_stop is the remaining power at the end of charging, S2 is the power consumption during the charging interval, Q1 is the capacity value, and SOC_int is the average remaining power at the charging time. The formula for calculating the charging power is: P_charge=Q1*(SOC_stop-SOC_int) / h Where P_charge is the charging power, Q1 is the capacity value, SOC_int is the average remaining power at the charging moment, SOC_stop is the remaining power at the charging end, and h is the average charging time when plugged in.

6. The method for protecting the charging of an automotive power battery according to claim 3, characterized in that, The charging process, based on the recommended remaining battery level and recommended charging power, also includes: Record the current charging data of the vehicle's power battery; The current charging data is added to the charging data to update the charging data; Based on the updated charging data, the charging parameters of the vehicle's power battery are re-determined.

7. The method for protecting the charging of an automotive power battery according to claim 1 or 2, characterized in that, Before acquiring the charging data of the vehicle's power battery, the vehicle power battery charging protection method includes: The charging time for each plug-in charging session of the vehicle's power battery, the remaining charge at the beginning of each charging session, the power consumption during each charging interval, the capacity retention rate, and the initial capacity are collected. The sum of the power consumption of all charging intervals within the preset time period is taken as the cumulative power consumption, and the sum of all charging times within the preset time period is taken as the cumulative charging times. The average charging time is calculated based on the charging duration of each plug-in charging session within the preset time period and the cumulative number of charging sessions. Based on the remaining power at the initial moment of each charge within the preset time period and the cumulative number of charges, the average remaining power at each charging moment is calculated. The power consumption during the charging interval is calculated based on the cumulative power consumption and the cumulative number of charging cycles. The capacity value is obtained by multiplying the capacity retention rate and the initial capacity. The average charging time, power consumption during charging intervals, average remaining power at charging time, and the capacity value are used as the charging data.

8. A charging protection device for automotive power batteries, characterized in that, The vehicle power battery charging protection device includes: The data acquisition module is used to acquire charging data of the vehicle's power battery; wherein, the charging data includes: power consumption during charging intervals, average charging time with plug-in gun, average remaining power and capacity value at the charging moment; The strategy determination module is used to determine the charging parameters of the vehicle power battery based on the charging data, and to determine a charging protection strategy based on the charging parameters, so as to protect the vehicle power battery during charging according to the charging protection strategy; wherein, the charging parameters include: charging power and remaining capacity at charging cutoff; the process of determining the charging parameters of the vehicle power battery based on the charging data includes: determining the remaining capacity at charging cutoff based on the average remaining capacity at the charging time, the power consumption during the charging interval, and the capacity value; and determining the charging power based on the remaining capacity at charging cutoff, the average charging time, the average remaining capacity at the charging time, and the capacity value.

9. A power battery, characterized in that, The power battery is charged using the automotive power battery charging protection method as described in any one of claims 1-7.

10. A car, characterized in that, The vehicle includes the power battery as described in claim 9.

Images