METHOD AND DEVICE FOR CORRECTING THE STATE OF CHARGE, VEHICLE, SERVER AND DATA MEDIA

Abstract

A state of charge (SOC) correction method and apparatus, a vehicle, a server, and a storage medium. The method comprises: acquiring battery data of a power battery; uploading the battery data to a server, and the server calculating a first SOC of the power battery at a target moment on the basis of the battery data and calculating an SOC difference on the basis of the first SOC and a second SOC of the power battery at the target moment in the battery data; and masking one or more SOC correction strategies for the power battery, calculating a target SOC on the basis of the SOC difference and the SOC of the power battery at the current moment, and correcting the SOC of the power battery to the target SOC.

Description

SOC correction method, device, vehicle, server and storage medium

[0001] This application claims priority to Chinese patent application No. 202410227811.9, filed on February 29, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present disclosure relates to the field of vehicle technology, and more particularly to a state of charge (SOC) correction method, device, vehicle, server, and storage medium. Background Art

[0003] Lithium batteries play an important role in the application of battery energy storage systems due to their high energy density and long life. They are crucial energy storage units in new energy vehicles. Since lithium batteries are a complex electrochemical system with extremely strong nonlinear characteristics, the SOC estimation methods that can be used include the ampere-hour integration method, the equivalent model method, and the machine learning method. Summary of the Invention

[0004] The present disclosure provides a SOC correction method, device, vehicle, server and storage medium to solve the problems in related technologies, that SOC deviation may cause power interruption and low driving safety; and there is a delay in information exchange between the vehicle and the server, which may cause the SOC correction strategy to deviate and the correction result to be less accurate.

[0005] In a first aspect, a SOC correction method is provided, which is applied to a vehicle, and includes obtaining battery data of a power battery; uploading the battery data to a server; the server calculating a first state of charge (SOC) of the power battery at a target moment based on the battery data, and calculating an SOC difference based on the first SOC and a second SOC of the power battery at the target moment in the battery data; and shielding one or more SOC correction strategies of the power battery, calculating a target SOC based on the SOC difference and the SOC of the power battery at the current moment, and correcting the SOC of the power battery to the target SOC.

[0006] The SOC correction method of some embodiments of the present disclosure can calculate the SOC difference when a deviation occurs in the power battery through the server, that is, the relative deviation value that the power battery needs to be corrected. Since the relative deviation value estimation of the SOC is completed through the server, the estimation efficiency can be improved and the computing resources for correcting the vehicle's SOC can be saved.

[0007] Moreover, since the SOC correction strategy on the vehicle side is shielded, the relative deviation value of the SOC can remain basically unchanged from the target moment and is not affected by the communication delay. Therefore, by shielding the SOC correction strategy on the vehicle side, the correction deviation caused by the delay in information interaction between the vehicle and the server can be effectively avoided, the accuracy of the SOC correction can be improved, and the possibility of power interruption caused by SOC deviation can be reduced, thereby ensuring the safe and stable operation of the vehicle and meeting actual usage needs.

[0008] In some embodiments, shielding one or more SOC correction strategies of the power battery includes: obtaining the priority of each SOC correction strategy of the power battery; and shielding one or more SOC correction strategies whose priority is less than or equal to a preset priority.

[0009] The SOC correction method of some embodiments of the present disclosure can compare the priority of each SOC correction strategy with a preset priority to determine whether to block an SOC correction strategy with a lower priority. Since a correction strategy with a higher priority can more accurately correct the vehicle SOC, the accuracy of the SOC correction can be improved, thereby improving the safety and stability of the vehicle operation and meeting actual usage needs.

[0010] In some embodiments, correcting the SOC of the power battery to the target SOC includes: detecting whether a SOC correction strategy with a priority greater than a preset priority is triggered during the current SOC correction process; and if the SOC correction strategy with a priority greater than the preset priority is detected, stopping the current SOC correction process, and correcting the SOC of the power battery based on the SOC correction strategy with a priority greater than the preset priority.

[0011] The SOC correction method of some embodiments of the present disclosure can detect and determine whether there is an SOC correction strategy with a higher priority in the current SOC correction process. When it is detected that there is an SOC correction strategy with a higher priority, the execution of the current SOC correction strategy is stopped, and the SOC of the power battery is corrected with the SOC value of the higher priority strategy. Since the correction of a higher priority correction strategy is more accurate, the SOC correction strategy with a lower priority is shielded in time, which can avoid the problem of inaccurate correction results caused by untimely response to the correction strategy with a higher priority, thereby improving the accuracy of the correction results and meeting actual usage needs.

[0012] In some embodiments, correcting the SOC of the power battery to the target SOC further includes: detecting a current scene of the vehicle; determining a target correction rate of the power battery based on the current scene; and correcting the SOC of the power battery according to the target correction rate.

[0013] The SOC correction method of some embodiments of the present disclosure can confirm the target correction rate of the power battery correction according to the scenario, so as to use different approximation rates to complete the correction of the vehicle SOC in different actual scenarios, prevent the vehicle SOC from jumping and affecting other functions and user experience, ensure the safe and stable operation of the battery system, and meet actual usage needs.

[0014] In some embodiments, the method of correcting the SOC of the power battery to the target SOC further includes: integrating the power battery from the current moment and obtaining a third SOC in real time; and updating the target SOC according to the third SOC until the SOC of the power battery is corrected to the target SOC.

[0015] The SOC correction method of some embodiments of the present disclosure can use an integral method to update the target SOC in real time, so that the target SOC is more compatible with the current vehicle state, the accuracy of the SOC correction strategy is improved, and the safe and stable operation of the battery system is ensured to meet actual usage needs.

[0016] In some embodiments, after correcting the SOC of the power battery to the target SOC, the method further includes: restoring one or more SOC correction strategies of the power battery.

[0017] In some embodiments, before correcting the SOC of the power battery to the target SOC, the method further includes: determining whether the vehicle meets a first correction condition based on the battery data; and if the vehicle meets the first correction condition, correcting the SOC of the power battery to the target SOC, otherwise no correction is performed.

[0018] Since the SOC relative deviation value of some embodiments of the present disclosure remains basically unchanged starting from the target moment, the SOC correction method of some embodiments of the present disclosure can use the vehicle battery data to determine whether the vehicle meets the SOC correction conditions. When the correction conditions are not met, the SOC correction of the power battery is not performed, which improves the accuracy and applicability of the SOC correction strategy and meets actual usage needs.

[0019] In some embodiments, determining whether the vehicle meets the first correction condition based on the battery data includes: obtaining the interval duration between the power battery and the last correction time and the battery cumulative throughput capacity; and if at least one of the conditions of the interval duration being greater than a first preset duration or the battery cumulative throughput capacity being greater than a first preset capacity is met, determining that the vehicle meets the first correction condition.

[0020] Since the SOC relative deviation value of some embodiments of the present disclosure remains basically unchanged from the target moment, the SOC correction method of some embodiments of the present disclosure can use the correction interval time and the battery cumulative throughput capacity to determine whether the vehicle meets the correction conditions. If the correction conditions are not met, no SOC correction is performed, thereby saving correction resources and meeting actual usage needs.

[0021] In a second aspect, an SOC correction method is provided, which is applied to a server and includes: obtaining battery data of a power battery uploaded by a vehicle; calculating a first state of charge SOC of the power battery at a target moment based on the battery data, and calculating an SOC difference based on the first SOC and a second SOC of the power battery at the target moment in the battery data; and sending the SOC difference to the vehicle; the vehicle shields one or more SOC correction strategies of the power battery, calculates a target SOC based on the SOC difference and the SOC of the power battery at the current moment, and corrects the SOC of the power battery to the target SOC.

[0022] In some embodiments, before sending the SOC difference to the vehicle, the method further includes: determining whether the vehicle meets a second correction condition based on the battery data; and if the vehicle meets the second correction condition, sending the SOC difference to the vehicle.

[0023] In some embodiments, determining whether the vehicle meets the second correction condition based on the battery data includes: identifying the last correction time of the power battery and the battery cumulative throughput capacity in the battery data; and calculating the deviation threshold based on the interval from the last correction time to the current time and the battery cumulative throughput capacity. If the SOC difference is less than the deviation threshold, determining whether the vehicle meets the second correction condition.

[0024] In some embodiments, determining whether the vehicle satisfies the second correction condition based on the battery data further includes: determining whether the vehicle satisfies the second correction condition if at least one of the conditions that the interval duration is greater than a second preset duration or the battery cumulative throughput capacity is greater than a second preset capacity is met.

[0025] In a third aspect, a SOC correction device is provided, which utilizes a server and includes: a first acquisition module, an upload module, and a correction module. The first acquisition module is configured to acquire battery data of a power battery; the upload module is configured to upload the battery data to the server; the server calculates a first state of charge (SOC) of the power battery at a target time based on the battery data, and calculates an SOC difference based on the first SOC and a second SOC of the power battery at the target time as contained in the battery data; and the correction module is configured to disable one or more SOC correction strategies of the power battery, calculate a target SOC based on the SOC difference and the SOC of the power battery at the current time, and correct the SOC of the power battery to the target SOC.

[0026] In some embodiments, the correction module is further configured to: obtain the priority of each SOC correction strategy of the power battery; and shield one or more SOC correction strategies whose priority is less than or equal to a preset priority.

[0027] In some embodiments, the correction module is further configured to: detect whether an SOC correction strategy with a priority greater than a preset priority is triggered during the current SOC correction process; and if an SOC correction strategy with a priority greater than the preset priority is detected, stop the current SOC correction process, and correct the SOC of the power battery based on the SOC correction strategy with a priority greater than the preset priority.

[0028] In some embodiments, the correction module is further configured to: detect a current scene of the vehicle; determine a target correction rate of the power battery according to the current scene; and correct the SOC of the power battery according to the target correction rate.

[0029] In some embodiments, the correction module is further configured to: integrate the power battery from the current moment and obtain a third SOC in real time; and update the target SOC according to the third SOC until the SOC of the power battery is corrected to the target SOC.

[0030] In some embodiments, the correction module is further configured to restore one or more SOC correction strategies of the power battery.

[0031] In some embodiments, the correction module is further configured to: determine whether the vehicle meets a first correction condition based on the battery data; and if the vehicle meets the first correction condition, correct the SOC of the power battery to the target SOC, otherwise no correction is performed.

[0032] In some embodiments, the correction module is further configured to: obtain the interval duration between the power battery and the last correction time and the battery cumulative throughput capacity; and if at least one of the conditions of the interval duration being greater than a first preset duration or the battery cumulative throughput capacity being greater than a first preset capacity is met, determine that the vehicle meets the first correction condition.

[0033] In a fourth aspect, a SOC correction device is provided, which is applied to a server and includes: a second acquisition module, a calculation module, and a sending module. The second acquisition module is configured to acquire battery data of a power battery uploaded by a vehicle; the calculation module is configured to calculate a first state of charge (SOC) of the power battery at a target time based on the battery data, and calculate an SOC difference based on the first SOC and a second SOC of the power battery at the target time as contained in the battery data; the sending module is configured to send the SOC difference to the vehicle; the vehicle shields one or more SOC correction strategies for the power battery, calculates a target SOC based on the SOC difference and the SOC of the power battery at the current time, and corrects the SOC of the power battery to the target SOC.

[0034] In some embodiments, the sending module is further configured to: determine whether the vehicle meets a second correction condition based on the battery data; and send the SOC difference to the vehicle if the vehicle meets the second correction condition.

[0035] In some embodiments, the sending module is further configured to: identify the last correction time of the power battery and the battery cumulative throughput capacity in the battery data; and calculate the deviation threshold based on the interval from the last correction time to the current time and the battery cumulative throughput capacity. If the SOC difference is less than the deviation threshold, it is determined whether the vehicle meets the second correction condition.

[0036] In some embodiments, the sending module is further configured to determine whether the vehicle meets the second correction condition if at least one of the conditions that the interval duration is greater than a second preset duration or the battery cumulative throughput capacity is greater than a second preset capacity is met.

[0037] In a fifth aspect, a vehicle is provided, comprising the above-mentioned SOC correction device.

[0038] In a sixth aspect, a server is provided, comprising the above-mentioned SOC correction device.

[0039] In a seventh aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a computer program, and the program is executed by a processor to implement the above-mentioned SOC correction method.

[0040] The beneficial effects of some embodiments of the present disclosure are as follows:

[0041] (1) Some embodiments of the present disclosure can calculate the SOC difference when a deviation occurs in the power battery through the server, that is, the relative deviation value that needs to be corrected for the power battery. Since the relative deviation value estimation of the SOC is completed through the server, the estimation efficiency can be improved, and the computing resources for correcting the SOC of the vehicle can be saved. In addition, since the SOC correction strategy on the vehicle side is shielded, the relative deviation value of the SOC can remain basically unchanged from the target moment and is not affected by the communication delay. Therefore, by shielding the SOC correction strategy on the vehicle side, the correction deviation caused by the information interaction delay between the vehicle and the server can be effectively avoided, and the accuracy of the SOC correction can be improved, thereby reducing the possibility of power interruption caused by SOC deviation, ensuring the safe and stable operation of the vehicle, and meeting the actual use needs.

[0042] (2) Some embodiments of the present disclosure can compare the priority of each SOC correction strategy with the preset priority to determine whether to block the SOC correction strategy with a lower priority. Since the correction strategy with a higher priority can correct the vehicle SOC more accurately, the accuracy of the SOC correction can be improved, thereby improving the safety and stability of the vehicle operation and meeting actual usage needs.

[0043] (3) Some embodiments of the present disclosure can detect and determine whether there is a higher-priority SOC correction strategy in the current SOC correction process. When it is detected that there is a higher-priority SOC correction strategy, the execution of the current SOC correction strategy is stopped, and the SOC of the power battery is corrected with the SOC value of the higher-priority strategy. Since the correction of a higher-priority correction strategy is more accurate, the lower-priority SOC correction strategy is shielded in time, which can avoid the problem of inaccurate correction results caused by untimely response to the higher-priority correction strategy, thereby improving the accuracy of the correction results and meeting actual use needs.

[0044] (4) Some embodiments of the present disclosure can confirm the target correction rate of the power battery correction according to the scenario, so as to use different approximation rates to complete the correction of the vehicle SOC in different actual scenarios, prevent the vehicle SOC from jumping and affecting other functions and user experience, ensure the safe and stable operation of the battery system, and meet actual use needs.

[0045] (5) Some embodiments of the present disclosure can use an integral method to update the target SOC in real time, so that the target SOC is more compatible with the current vehicle state, the accuracy of the SOC correction strategy is improved, and the safe and stable operation of the battery system is ensured to meet actual usage needs.

[0046] (6) Since the SOC relative deviation value of some embodiments of the present disclosure remains basically unchanged starting from the target moment, some embodiments of the present disclosure can use vehicle battery data to determine whether the vehicle meets the SOC correction conditions. When the correction conditions are not met, the SOC of the power battery is not corrected, which improves the accuracy and applicability of the SOC correction strategy and meets actual usage needs.

[0047] (7) Since the SOC relative deviation value of some embodiments of the present disclosure remains basically unchanged starting from the target moment, some embodiments of the present disclosure can use the correction interval time and the battery cumulative throughput capacity to determine whether the vehicle meets the correction conditions. If the correction conditions are not met, no SOC correction is performed, thereby saving correction resources and meeting actual usage needs.

[0048] Additional aspects and advantages of the present disclosure will be given in part in the description below and in part will be obvious from the description below, or will be learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] FIG1 is a flow chart of a method for correcting an SOC according to some embodiments;

[0050] FIG2 is a flow chart of a method for SOC estimation according to some embodiments;

[0051] FIG3 is a flow chart illustrating a corrective action for vehicle-cloud fusion after normal completion of cloud-vehicle interaction according to some embodiments;

[0052] FIG4 is a diagram illustrating vehicle-cloud fusion correction during the discharge phase according to some embodiments;

[0053] FIG5 is a flow chart illustrating the termination of a cloud-vehicle interaction according to some embodiments;

[0054] FIG6 is a flow chart of another SOC correction method according to some embodiments;

[0055] FIG7 is a block diagram of an SOC correction device according to some embodiments;

[0056] FIG8 is a block diagram of another SOC correction device according to some embodiments;

[0057] FIG9 is a block diagram of a vehicle according to some embodiments;

[0058] FIG10 is a block diagram of a server according to some embodiments. DETAILED DESCRIPTION

[0059] The following will describe the embodiments of the present disclosure with reference to the accompanying drawings and preferred embodiments. Those skilled in the art will readily understand the other advantages and benefits of the present disclosure from the contents disclosed in this specification. The present disclosure may also be implemented or applied through different specific embodiments, and the details in this specification may be modified or altered based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be understood that the preferred embodiments are merely illustrative of the present disclosure and are not intended to limit the scope of protection of the present disclosure.

[0060] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present disclosure. Therefore, the illustrations only show components related to the present disclosure and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0061] Among related technologies, lithium batteries play an important role in the application of battery energy storage systems due to their high energy density and long life. They are crucial energy storage units in new energy vehicles. Lithium batteries are a complex electrochemical system with extremely strong nonlinear characteristics.

[0062] SOC represents the battery's state of charge and is an important basis for battery status monitoring and vehicle control. SOC estimation is one of the core functions of the Battery Management System (BMS). SOC estimation methods in related technologies mainly include: ampere-hour integration method, equivalent model method and machine learning method.

[0063] In the related art, a cloud-based intelligent battery SOC management system and method are provided. The system includes: a battery management system and a cloud server. The cloud server readjusts the correction coefficient based on the operating parameters of the battery module and its historical operating parameter information, obtains a new correction coefficient, and sends it to the BMS. The above solution discloses a cloud-based battery management system, which provides a large framework for collaboration between the vehicle and the cloud. However, it does not provide effective solutions to practical problems such as how the vehicle and the cloud can exchange information, how to deal with the time difference caused by delays in the information exchange process, and how to adjust the vehicle-side SOC.

[0064] Related technologies include a battery SOC correction system for electric vehicles, a control method thereof, a storage medium, and an electric vehicle. The battery SOC correction system includes a data acquisition module, a data transmission module, and a cloud server. Based on the historical SOC values ​​and SOC wake-up values ​​uploaded by the data transmission module, the initial SOC value for the electric vehicle's current startup is fed back to the electric vehicle's battery management system or the connected vehicle user terminal. This can reduce errors that may occur during battery SOC estimation and improve estimation accuracy. However, this method only corrects the initial SOC value at power-up and does not account for delays in information transmission from the cloud to the vehicle.

[0065] In actual engineering applications, due to the hardware conditions on the vehicle side, it is difficult to implement complex algorithm strategies, and SOC is prone to deviations, which may lead to serious problems such as power interruption. The cloud platform has stronger computing power than the vehicle side, can run more complex algorithms, and has a large amount of vehicle historical data as support. With the continuous development of current technology, the electrification, intelligence, and networking of automobiles have become an inevitable trend. However, there is a delay in the information transmission between vehicles and cloud platform servers in related technologies, and the accuracy of SOC estimation is relatively low.

[0066] Based on this, some embodiments of the present disclosure provide an SOC correction method, device, vehicle, server and storage medium to solve the problems in related technologies, such as SOC deviation may cause power interruption and low driving safety; and there is a delay in information interaction between the vehicle and the server, which may cause deviation in the SOC correction strategy and low accuracy of the correction result.

[0067] FIG1 is a flow chart of a method for correcting an SOC according to some embodiments. As shown in FIG1 , the method for correcting an SOC is applied to a vehicle, and the method for correcting an SOC includes steps S101-S103.

[0068] In step S101 , battery data of a power battery is acquired.

[0069] For example, as shown in Figure 2, the battery data of some embodiments of the present disclosure may include battery current, voltage, temperature, SOC, etc.; the vehicle of some embodiments of the present disclosure can use at least one method to obtain the battery data of the power battery, such as the battery data can be obtained using the vehicle-side BMS (such as step S270) and uploaded (such as step S280) to the big data cloud platform serving as the server (such as step S210), etc., without limitation.

[0070] It is understandable that some embodiments of the present disclosure may first acquire battery data of the power battery in real time to facilitate the application of the battery data and the correction of the battery SOC in subsequent steps.

[0071] The vehicle of some embodiments of the present disclosure may include a vehicle-side BMS, which includes an SOC estimation function. The vehicle can upload the current, voltage, temperature, etc. collected by the BMS to the server, and can receive signals sent by the server; in the following embodiments, the description will be based on a new energy vehicle with a power battery and a big data cloud platform as a server; the server side will be described in detail in the following embodiments.

[0072] In step S102, the battery data is uploaded to the server. The server calculates a first state of charge (SOC) of the power battery at the target time based on the battery data, and calculates an SOC difference based on the first SOC and a second SOC of the power battery at the target time in the battery data.

[0073] For example, the target time can be set according to actual conditions, and this disclosure does not limit this.

[0074] It is understandable that the vehicle of some embodiments of the present disclosure can upload the battery data obtained in the above step S101 to the server, and then the server calculates the obtained battery data to obtain the difference between the calculated SOC value at a certain moment and the SOC value on the vehicle side at the corresponding moment.

[0075] In step S103 , one or more SOC correction strategies of the power battery are shielded, a target SOC is calculated according to the SOC difference and the current SOC of the power battery, and the SOC of the power battery is corrected to the target SOC.

[0076] For example, the SOC correction strategy of some embodiments of the present disclosure may include effective open circuit voltage (OCV)-SOC table correction, full charge correction, vehicle-cloud SOC fusion and other correction strategies, which are not limited by the present disclosure; the target SOC can be used to correct the current SOC of the power battery, which can be set according to actual conditions and obtained by calculation. The calculation formula can refer to formula (1): Target SOC (t) = target SOC (t-1) - i (t) * Δt / 3600Q 额定 (1)

[0077] Among them, Q 额定 is the rated capacity, Δt is the time interval, i(t) is the real-time current, the discharge current sign is positive, the charge current sign is negative, target SOC(t-1) is the target SOC at the previous moment, and target SOC(t) is the target SOC at the current moment.

[0078] In some embodiments, as shown in FIG2 , a cloud platform (such as a server) may estimate the SOC based on historical data and an intelligent algorithm (such as step S210 ), and then calculate the SOC based on the historical data and real-time data (such as step S220 ).

[0079] In this case, the cloud can decide whether to perform vehicle-cloud SOC fusion (such as step S230). If not, execute step S210; if so, send information (such as SOC correction signal, etc.) to the vehicle (such as step S240), and the vehicle side decides whether to perform vehicle-cloud SOC fusion (such as step S250); if so, calculate the target SOC (that is, the vehicle-side SOC approaches the target SOC, such as step S260), and the vehicle-side BMS (such as step S270) uploads the above battery data (including battery current, voltage, temperature, SOC, etc.) to the server (such as step S280), and the vehicle-side BMS uploads the vehicle-cloud fusion SOC correction execution result to the server (such as step S290); if not, end.

[0080] Some embodiments of the present disclosure may implement SOC correction based on the current vehicle SOC and take the target SOC(t) as the target value in a gradual approximation manner to prevent the vehicle SOC from jumping and affecting other functions.

[0081] It can be understood that some embodiments of the present disclosure can shield the vehicle SOC correction strategy and perform SOC calculation based on the SOC difference obtained in the above step S102 and the SOC value of the vehicle at the current moment, so that the vehicle can complete the correction of the current SOC to the calculated target SOC based on the calculation result.

[0082] In some embodiments of the present disclosure, shielding one or more SOC correction strategies of the power battery further includes: obtaining the priority of each SOC correction strategy of the power battery; and shielding one or more SOC correction strategies whose priority is less than or equal to a preset priority.

[0083] Here, the priority and preset priority of each correction strategy can be set according to actual conditions. In some embodiments of the present disclosure, full charge correction, effective OCV-SOC correction, etc. may be considered as correction strategies with higher priority, which is greater than the preset priority, etc. The present disclosure does not limit this.

[0084] It can be understood that some embodiments of the present disclosure can first obtain the priority of each SOC correction strategy, so as to screen out SOC correction strategies that do not meet the requirements based on the comparison of the priority of each SOC correction strategy with the preset priority, and then screen out strategies with priorities lower than the preset priority.

[0085] It should be noted that before correcting the SOC of the power battery, some embodiments of the present disclosure may also prepare for the SOC correction of the power battery and further restrict the correction conditions. This step includes:

[0086] (1) Determine whether the vehicle meets the vehicle-cloud SOC fusion correction conditions.

[0087] In some embodiments of the present disclosure, before correcting the SOC of the power battery to the target SOC, the method further includes: determining whether the vehicle meets a first correction condition based on battery data; if it is determined that the vehicle meets the first correction condition, correcting the SOC of the power battery to the target SOC, otherwise no correction is performed.

[0088] For example, the first correction condition can be set according to actual conditions, and this disclosure does not limit this.

[0089] It can be understood that some embodiments of the present disclosure may set a first correction condition to determine whether the vehicle meets the SOC correction condition based on the comparison between the actual vehicle condition and the preset first correction condition; if the correction condition is met, some embodiments of the present disclosure may correct the SOC of the power battery to the target SOC; if the correction condition is not met, no correction will be performed.

[0090] In some embodiments of the present disclosure, determining whether a vehicle meets a first correction condition is performed based on battery data, including: obtaining the interval duration from the power battery to the last correction time and the battery's cumulative throughput capacity; if at least one of the interval duration is greater than a first preset duration, or the battery's cumulative throughput capacity is greater than the first preset capacity, then determining that the vehicle meets the first correction condition.

[0091] For example, the first preset duration and the first preset capacity can be set according to actual conditions, and this disclosure does not limit this. In some embodiments of this disclosure, the calculation formula for the cumulative throughput capacity can refer to formula (2):

[0092] It can be understood that, as shown in Figure 3, in some embodiments of the present disclosure, the server can determine whether to perform vehicle-cloud SOC fusion through SOC calculation (such as step S301): the server can obtain the time when the vehicle last made an effective SOC correction, calculate the interval duration from the last time to the current moment, and obtain the battery's cumulative throughput capacity at the same time; when at least one of the conditions that the interval duration is greater than the preset first preset duration, or the battery's cumulative throughput capacity is greater than the preset first preset capacity is met, it can be determined that the vehicle meets the vehicle-cloud SOC fusion condition, and vehicle-cloud SOC fusion is performed; otherwise, it is determined that the fusion condition is not met, and vehicle-cloud SOC fusion is not performed.

[0093] For example, the server determines the condition for merging the vehicle-side and server-side SOCs as follows: the absolute value of the difference between the SOC calculated by the vehicle-side on the server the last time and the vehicle SOC does not exceed the threshold value f(t,Q).

[0094] Where t and Q are the time from the last effective vehicle SOC correction performed on the vehicle side to the current moment and the accumulated battery throughput capacity, respectively, and f(t, Q) is the maximum possible SOC deviation calibrated based on t and Q. If the above conditions are not met, the server will not send the vehicle-cloud SOC fusion information. It should be noted that if the server makes a decision to perform a vehicle-cloud SOC fusion correction (such as step S302), then as shown in Figure 3, the vehicle-cloud SOC fusion step in some embodiments of the present disclosure may include the following steps (steps 1 to 6).

[0095] In the first step, the cloud server sends a correction request.

[0096] In the second step, the vehicle side performs preparation operations (such as step S303), shields the low-priority SOC correction strategy, and feeds back a preparation completion signal.

[0097] In the third step, the server sends the vehicle-cloud fusion SOC correction instruction.

[0098] The fourth step is to determine whether to perform vehicle-cloud SOC fusion correction in the above embodiment, and the vehicle side makes a decision (such as step S304).

[0099] In the fifth step, the vehicle performs a vehicle-cloud fusion SOC correction operation (such as step S305). For example, after the correction operation is completed, the vehicle can end the correction process and operate normally (such as step S306).

[0100] Step 6: Feedback a correction success signal to instruct the server that the correction is complete (such as step S307).

[0101] For example, in the fifth step of the above embodiment, when the vehicle-side of some embodiments of the present disclosure performs vehicle-cloud SOC fusion correction, the target SOC can be calculated according to the received SOC correction instruction and the vehicle SOC as described in the above formula (1), and then the target SOC is updated in real time by ampere-hour integration.

[0102] For example, correcting the SOC of the power battery to the target SOC further includes: integrating the power battery from the current moment to obtain a third SOC in real time; and updating the target SOC according to the third SOC until the SOC of the power battery is corrected to the target SOC.

[0103] It is understandable that some embodiments of the present disclosure can perform real-time integration of the power battery and update the target SOC in real time with the SOC value obtained by the integration. In this way, SOC correction can be achieved in a gradual approximation manner to prevent the vehicle SOC from jumping and affecting other functions.

[0104] It should be noted that in some embodiments of the present disclosure, when the vehicle SOC is corrected to the target SOC, the vehicle-cloud fusion process can be terminated, and the fusion effect can be shown in Figure 4. During the vehicle-cloud fusion process, if a higher priority SOC correction strategy appears, the vehicle-cloud fusion process will be terminated immediately.

[0105] For example, correcting the SOC of the power battery to the target SOC includes: detecting whether an SOC correction strategy with a priority greater than a preset priority is triggered during the current SOC correction process; if an SOC correction strategy with a priority greater than the preset priority is detected, stopping the current SOC correction process, and correcting the SOC of the power battery based on the SOC correction strategy with a priority greater than the preset priority.

[0106] It is understood that, as shown in FIG5 , in some embodiments of the present disclosure, the server can determine whether to perform vehicle-cloud SOC fusion through SOC calculation (e.g., step S501). If the server makes a decision and determines to perform vehicle-cloud SOC fusion correction (e.g., step S502), the cloud server sends a correction request to the vehicle. After receiving the correction request, the vehicle performs a preparation operation (e.g., step S503), disables low-priority SOC correction strategies, and returns a preparation completion signal.

[0107] Then, the server sends a vehicle-cloud fusion SOC correction instruction. In this case, the vehicle can determine whether there is a strategy with a priority greater than the preset priority in the current SOC correction process, and determine whether it is triggered; when a higher-priority SOC correction strategy is detected, the current vehicle-cloud fusion SOC correction strategy can be terminated immediately (such as step S504), and the SOC correction strategy can be changed to use the higher-priority SOC correction strategy as the current correction strategy to meet actual usage needs.

[0108] For example, after the correction operation is completed, the vehicle can end the correction process and operate normally (such as step S505). In addition, the vehicle can feedback a correction success signal to indicate to the server that the correction is completed (such as step S506).

[0109] (2) Determine the correction rate of the power battery.

[0110] In some embodiments of the present disclosure, before correcting the SOC of the power battery to the target SOC, the method further includes: detecting the current scene of the vehicle; determining the target correction rate of the power battery according to the current scene; and correcting the SOC of the power battery according to the target correction rate.

[0111] It is understandable that, in different practical scenarios, some implementations of the present disclosure may use different approximation rates to complete the correction, thereby ensuring the safety of the battery system and enabling the system to operate stably.

[0112] In some embodiments of the present disclosure, after correcting the SOC of the power battery to the target SOC, the method further includes: restoring one or more SOC correction strategies of the power battery.

[0113] It is understood that after the power battery SOC is corrected, the previously disabled SOC correction strategy can be restored. For example, if some embodiments of the present disclosure do not perform the above-mentioned vehicle-cloud SOC fusion, a rejection signal of the vehicle-cloud SOC fusion can be fed back to the server, and the disabled SOC correction strategy can be restored.

[0114] The SOC correction method provided by some embodiments of the present disclosure has at least the following advantages:

[0115] (1) Some embodiments of the present disclosure can calculate the SOC difference when a deviation occurs in the power battery through the server, that is, the relative deviation value that the power battery needs to correct. Since the relative deviation value estimation of the SOC is completed through the server, the estimation efficiency can be improved and the computing resources for correcting the SOC of the vehicle can be saved; and since the SOC correction strategy on the vehicle side is shielded, the relative deviation value of the SOC can remain basically unchanged from the target moment and is not affected by the communication delay. Therefore, by shielding the SOC correction strategy on the vehicle side, the correction deviation caused by the information interaction delay between the vehicle and the server can be effectively avoided, and the accuracy of the SOC correction can be improved, thereby reducing the possibility of power interruption due to SOC deviation, ensuring the safe and stable operation of the vehicle, and meeting the actual use needs.

[0116] (2) Some embodiments of the present disclosure can compare the priority of each SOC correction strategy with the preset priority to determine whether to block the SOC correction strategy with a lower priority. Since the correction strategy with a higher priority can correct the vehicle SOC more accurately, the accuracy of the SOC correction can be improved, thereby improving the safety and stability of the vehicle operation and meeting actual usage needs.

[0117] (3) Some embodiments of the present disclosure can detect and determine whether there is a higher-priority SOC correction strategy in the current SOC correction process. When it is detected that there is a higher-priority SOC correction strategy, the execution of the current SOC correction strategy is stopped, and the SOC of the power battery is corrected with the SOC value of the higher-priority strategy. Since the correction of a higher-priority correction strategy is more accurate, the lower-priority SOC correction strategy is shielded in time, which can avoid the problem of inaccurate correction results caused by untimely response to the higher-priority correction strategy, thereby improving the accuracy of the correction results and meeting actual use needs.

[0118] (4) Some embodiments of the present disclosure can confirm the target correction rate of the power battery correction according to the scenario, so as to use different approximation rates to complete the correction of the vehicle SOC in different actual scenarios, prevent the vehicle SOC from jumping and affecting other functions, ensure the safe and stable operation of the battery system, and meet actual use needs.

[0119] (5) Some embodiments of the present disclosure can use an integral method to update the target SOC in real time, so that the target SOC is more compatible with the current vehicle state, the accuracy of the SOC correction strategy is improved, and the safe and stable operation of the battery system is ensured to meet actual usage needs.

[0120] (6) Since the SOC relative deviation value of some embodiments of the present disclosure remains basically unchanged starting from the target moment, some embodiments of the present disclosure can use vehicle battery data to determine whether the vehicle meets the SOC correction conditions. When the correction conditions are not met, the SOC of the power battery is not corrected, which improves the accuracy and applicability of the SOC correction strategy and meets actual usage needs.

[0121] (7) Since the SOC relative deviation value of some embodiments of the present disclosure remains basically unchanged starting from the target moment, some embodiments of the present disclosure can use the correction interval time and the battery cumulative throughput capacity to determine whether the vehicle meets the correction conditions. If the correction conditions are not met, no SOC correction is performed, thereby saving correction resources and meeting actual usage needs.

[0122] Based on the SOC correction of the above-mentioned embodiment, some embodiments of the present disclosure provide another SOC correction method. This embodiment and the above-mentioned embodiment each have different focuses in their descriptions, and reference can be made between the embodiments for steps not fully described. The SOC correction method provided according to some embodiments of the present disclosure is described below with reference to the accompanying drawings.

[0123] Fig. 6 is a flow chart of another SOC correction method according to some embodiments. As shown in Fig. 6 , the SOC correction method is applied to a server, and the method includes steps S201-S203.

[0124] In step S201 , battery data of the power battery uploaded by the vehicle is obtained.

[0125] It is understandable that the server in some embodiments of the present disclosure may obtain the battery data of the power battery uploaded by the vehicle in the above step S101 for application in subsequent steps.

[0126] For example, the server of some embodiments of the present disclosure may be deployed with intelligent algorithms including but not limited to neural networks, decision trees, etc., which can perform accurate SOC estimation in certain specific scenarios or all scenarios based on historical data and real-time data related to batteries in the cloud platform.

[0127] In step S202 , a first state of charge (SOC) of the power battery at the target time is calculated based on the battery data, and an SOC difference is calculated based on the first SOC and a second SOC of the power battery at the target time in the battery data.

[0128] For example, the target time can be set according to actual conditions, and this disclosure does not limit this.

[0129] It is understood that some embodiments of the present disclosure may use the battery data received by the server in step S201 to calculate the SOC difference of the power battery. For example, the target SOC may be calculated with reference to formula (1) above.

[0130] Some embodiments of the present disclosure can smoothly implement SOC correction based on the current vehicle SOC and the target SOC(t) as the target value in a gradual approximation manner to prevent the vehicle SOC from jumping and affecting other functions.

[0131] In step S203, the SOC difference is sent to the vehicle, the vehicle shields one or more SOC correction strategies of the power battery, calculates the target SOC based on the SOC difference and the SOC of the power battery at the current moment, and corrects the SOC of the power battery to the target SOC.

[0132] It is understandable that the server of some embodiments of the present disclosure sends the SOC value obtained by the calculation in the above step S202 to the vehicle, so that the vehicle can execute control after receiving the SOC correction instruction to correct the current SOC towards the target SOC.

[0133] In some embodiments of the present disclosure, before sending the SOC difference value to the vehicle, the method further includes: determining whether the vehicle meets the second correction condition based on the battery data; if it is determined that the vehicle meets the second correction condition, sending the SOC difference value to the vehicle.

[0134] It can be understood that the server in some embodiments of the present disclosure can first perform an inspection before sending the SOC difference to the vehicle to determine whether the vehicle meets the correction conditions. If the correction conditions are not met, no information exchange will be performed and the relevant SOC difference will not be sent; if the correction conditions are met, the SOC difference will be sent to facilitate subsequent calculation and application.

[0135] In some embodiments of the present disclosure, determining whether a vehicle meets the second correction condition is performed based on battery data, including: identifying the last correction time of the power battery and the cumulative throughput capacity of the battery in the battery data; calculating a deviation threshold based on the interval length from the last correction time to the current time and the cumulative throughput capacity of the battery; if the SOC difference is less than the deviation threshold, determining whether the vehicle meets the second correction condition.

[0136] It can be understood that some embodiments of the present disclosure can calculate the deviation threshold of the SOC difference based on the interval duration and the cumulative throughput capacity of the battery. When the SOC difference is less than the deviation threshold, it can be considered that the current vehicle power battery needs to undergo SOC correction; if the difference is greater than the threshold, it can be considered that the current vehicle power battery does not meet the correction conditions.

[0137] In some embodiments of the present disclosure, determining whether the vehicle satisfies the second correction condition based on battery data further includes: if at least one of the conditions of the interval duration being greater than the second preset duration or the battery cumulative throughput capacity being greater than the second preset capacity is satisfied, then determining whether the vehicle satisfies the second correction condition.

[0138] For example, the second preset duration can be set according to actual conditions, and this disclosure does not limit this.

[0139] It can be understood that some embodiments of the present disclosure can use the correction interval time and the battery's cumulative throughput capacity to determine whether the vehicle meets the correction conditions, and no SOC correction is performed when the correction conditions are not met; thus, some embodiments of the present disclosure can determine whether the vehicle performs a fusion SOC correction and control the server to send SOC fusion information.

[0140] According to the SOC correction method provided in some embodiments of the present disclosure, the SOC difference when a deviation occurs in the power battery, that is, the relative deviation value that needs to be corrected for the power battery, can be calculated by the server. Since the relative deviation value estimation of the SOC is completed by the server, the efficiency of the estimation can be improved and the computing resources for correcting the vehicle's SOC can be saved.

[0141] Moreover, since the SOC correction strategy on the vehicle side is shielded, the relative deviation value of the SOC can remain basically unchanged from the target moment and is not affected by the communication delay. Therefore, by shielding the SOC correction strategy on the vehicle side, the correction deviation caused by the delay in information interaction between the vehicle and the server can be effectively avoided, the accuracy of the SOC correction can be improved, and the possibility of power interruption caused by SOC deviation can be reduced, thereby ensuring the safe and stable operation of the vehicle and meeting actual usage needs.

[0142] The following describes an SOC correction device provided according to some embodiments of the present disclosure with reference to the accompanying drawings.

[0143] FIG7 is a block diagram of a SOC correction device according to some embodiments. As shown in FIG7 , the SOC correction device 10 is applied to a server and includes: a first acquisition module 110 , an upload module 120 , and a correction module 130 .

[0144] For example, the first acquisition module 110 is configured to acquire battery data of the power battery.

[0145] The uploading module 120 is configured to upload the battery data to the server. The server calculates the first state of charge (SOC) of the power battery at the target time based on the battery data, and calculates the SOC difference based on the first SOC and the second SOC of the power battery at the target time in the battery data.

[0146] The correction module 130 is configured to shield one or more SOC correction strategies of the power battery, calculate the target SOC according to the SOC difference and the SOC of the power battery at a current moment, and correct the SOC of the power battery to the target SOC.

[0147] In some embodiments of the present disclosure, the correction module 130 is further configured to: obtain the priority of each SOC correction strategy of the power battery; and shield one or more SOC correction strategies whose priority is less than or equal to a preset priority.

[0148] In some embodiments of the present disclosure, the correction module 130 is further configured to: detect whether an SOC correction strategy with a priority greater than a preset priority is triggered during the current SOC correction process; if an SOC correction strategy with a priority greater than the preset priority is detected, stop the current SOC correction process, and correct the SOC of the power battery based on the SOC correction strategy with a priority greater than the preset priority.

[0149] In some embodiments of the present disclosure, the correction module 130 is further configured to: detect the current scene of the vehicle; determine a target correction rate of the power battery according to the current scene; and correct the SOC of the power battery according to the target correction rate.

[0150] In some embodiments of the present disclosure, the correction module 130 is further configured to: integrate the power battery from the current moment to obtain a third SOC in real time; and update the target SOC according to the third SOC until the SOC of the power battery is corrected to the target SOC.

[0151] In some embodiments of the present disclosure, the correction module 130 is further configured to restore one or more SOC correction strategies of the power battery.

[0152] In some embodiments of the present disclosure, the correction module 130 is further configured to: determine whether the vehicle meets the first correction condition based on the battery data; if it is determined that the vehicle meets the first correction condition, correct the SOC of the power battery to the target SOC, otherwise no correction is performed.

[0153] In some embodiments of the present disclosure, the correction module 130 is further configured to: obtain the interval time between the power battery and the last correction time and the battery cumulative throughput capacity; if at least one of the conditions of the interval time being greater than the first preset time or the battery cumulative throughput capacity being greater than the first preset capacity is met, it is determined that the vehicle meets the first correction condition.

[0154] It should be noted that the aforementioned explanation of the SOC correction method embodiment is also applicable to the SOC correction device of this embodiment, and will not be repeated here.

[0155] According to the SOC correction device provided in some embodiments of the present disclosure, the SOC difference when a deviation occurs in the power battery, that is, the relative deviation value that the power battery needs to be corrected, can be calculated through the server. Since the relative deviation value estimation of the SOC is completed through the server, the efficiency of the estimation can be improved and the computing resources for correcting the vehicle's SOC can be saved.

[0156] Moreover, since the SOC correction strategy on the vehicle side is shielded, the relative deviation value of the SOC can remain basically unchanged from the target moment and is not affected by the communication delay. Therefore, by shielding the SOC correction strategy on the vehicle side, the correction deviation caused by the delay in information interaction between the vehicle and the server can be effectively avoided, the accuracy of the SOC correction can be improved, and the possibility of power interruption caused by SOC deviation can be reduced, thereby ensuring the safe and stable operation of the vehicle and meeting actual usage needs.

[0157] Another SOC correction device provided according to some embodiments of the present disclosure is described below with reference to the accompanying drawings.

[0158] FIG8 is a block diagram of another SOC correction device according to some embodiments. As shown in FIG8 , the SOC correction device 20 is applied to a vehicle and includes: a second acquisition module 210 , a calculation module 220 , and a sending module 230 .

[0159] For example, the second acquisition module 210 is configured to acquire battery data of the power battery uploaded by the vehicle.

[0160] The calculation module 220 is configured to calculate a first state of charge (SOC) of the power battery at the target time according to the battery data, and calculate an SOC difference according to the first SOC and a second SOC of the power battery at the target time in the battery data.

[0161] The sending module 230 is configured to send the SOC difference to the vehicle. The vehicle shields one or more SOC correction strategies of the power battery, calculates the target SOC based on the SOC difference and the SOC of the power battery at the current moment, and corrects the SOC of the power battery to the target SOC.

[0162] In some embodiments of the present disclosure, the sending module 230 is further configured to: shield one or more SOC correction strategies of the power battery according to the correction request.

[0163] In some embodiments of the present disclosure, the sending module 230 is further configured to: determine whether the vehicle meets the second correction condition based on the battery data; if it is determined that the vehicle meets the second correction condition, send the SOC difference to the vehicle.

[0164] In some embodiments of the present disclosure, the sending module 230 is further configured to: identify the last correction time of the power battery and the cumulative throughput capacity of the battery in the battery data; calculate the deviation threshold based on the interval length from the last correction time to the current time and the cumulative throughput capacity of the battery; if the SOC difference is less than the deviation threshold, determine whether the vehicle meets the second correction condition.

[0165] In some embodiments of the present disclosure, the sending module 230 is further configured to determine whether the vehicle meets the second correction condition if at least one of the conditions that the interval duration is greater than the second preset duration or the battery cumulative throughput capacity is greater than the second preset capacity is met.

[0166] It should be noted that the aforementioned explanation of the SOC correction method embodiment is also applicable to the SOC correction device of this embodiment, and will not be repeated here.

[0167] According to the SOC correction device provided in some embodiments of the present disclosure, the SOC difference when a deviation occurs in the power battery, that is, the relative deviation value that the power battery needs to be corrected, can be calculated through the server. Since the relative deviation value estimation of the SOC is completed through the server, the efficiency of the estimation can be improved and the computing resources for correcting the vehicle's SOC can be saved.

[0168] Moreover, since the SOC correction strategy on the vehicle side is shielded, the relative deviation value of the SOC can remain basically unchanged from the target moment and is not affected by the communication delay. Therefore, by shielding the SOC correction strategy on the vehicle side, the correction deviation caused by the delay in information interaction between the vehicle and the server can be effectively avoided, the accuracy of the SOC correction can be improved, and the possibility of power interruption caused by SOC deviation can be reduced, thereby ensuring the safe and stable operation of the vehicle and meeting actual usage needs.

[0169] Some embodiments of the present disclosure further provide a vehicle, as shown in FIG9 , in which the vehicle 1000 includes the above-mentioned SOC correction device.

[0170] Some embodiments of the present disclosure further provide a server. As shown in FIG10 , the server 2000 includes the above-mentioned SOC correction device.

[0171] Some embodiments of the present disclosure further provide a computer-readable storage medium having a computer program stored thereon, which implements the above-mentioned SOC correction method when executed by a processor.

[0172] In some embodiments, the computer-readable storage medium may be a non-temporary computer-readable storage medium, for example, the non-temporary computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a compact disc read-only memory (CD-ROM), a magnetic tape, a floppy disk, an optical data storage device, etc.

[0173] In the description of this specification, the reference terms "some embodiments", "examples" or "some examples" mean that the features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure.

[0174] In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described features, structures, materials, or characteristics can be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification, as well as features of different embodiments or examples, unless they are mutually inconsistent.

[0175] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. Throughout the present disclosure, "N" means at least two, such as two, three, etc., unless expressly specified otherwise.

[0176] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or N executable instructions for implementing a custom logical function or step of a process, and the scope of the preferred embodiments of the present disclosure includes alternative implementations in which functions may be performed out of the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present disclosure pertain.

[0177] It should be understood that various parts of the present disclosure can be implemented by hardware, software, firmware or a combination thereof. In the above embodiment, the N steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system.

[0178] For example, if implemented in hardware, as in another embodiment, it can be implemented using any one of the following technologies known in the art or a combination thereof: a discrete logic circuit having a logic gate circuit for implementing logical functions on data signals, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array, a field programmable gate array, etc.

[0179] Those skilled in the art will understand that all or part of the steps in the method of the above embodiment can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiment.

[0180] Although the embodiments of the present disclosure have been shown and described above, it is understood that the above embodiments are illustrative and are not to be construed as limitations on the present disclosure. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present disclosure.

Claims

1. A method for correcting the state of charge (SOC) applied to a vehicle, comprising: Receive battery data; loading battery data to a server, wherein the server calculates a first SOC of the power battery at a target time based on the battery data and calculates a difference in SOC based on the first SOC and a second SOC of the power battery at a target time in the battery data; and deactivating one or more SOC correction strategies for the power battery, calculating a target SOC based on the difference between the SOC and the SOC of the power battery at the current moment, and adjusting the SOC of the power battery to the target SOC.

2. The method for correcting the SZ according to claim 1, wherein deactivating one or more SZ correction strategies for the power battery includes: obtaining the priority of each SZ correction strategy for the power battery; and deactivation of one or more SZ correction strategies with a priority less than or equal to the preset priority.

3. The method for correcting the SOC according to paragraph 1 or 2, in which correcting the SOC of the power battery to the target SOC includes: detecting whether a CP correction strategy with a priority greater than a preset priority is initiated in the current CP correction process; and stopping the current process of correcting the SOC and correcting the SOC of the power battery based on the specified SOC correction strategy with a priority greater than the preset priority, in response to detecting the specified SOC correction strategy with a priority greater than the preset priority.

4. A method for correcting the SOC according to any of paragraphs 1-3, in which correcting the SOC of the power battery to the target SOC includes: detection of the current vehicle scenario; determining the target correction rate for the power battery based on the current scenario; and Correction of the battery power supply voltage at the target correction rate.

5. A method for correcting the SOC according to any of paragraphs 1-4, in which correcting the SOC of the power battery to the target SOC includes: performing battery-powered integration from the current moment to obtain the third SZ in real time; and updating the target SV based on the third SV until the power battery SV is adjusted to the target SV.

6. A method for correcting the SOC according to any of paragraphs 1-5, in which, after correcting the SOC of the power battery to the target SOC, the method further comprises: restoring the specified deactivated one or more strategies for correcting the power supply battery's SZ.

7. A method for correcting the SOC according to any one of paragraphs 1-6, in which, before correcting the SOC of the power battery to the target SOC, the method also includes: determining, based on the battery data, whether the vehicle satisfies the first correction condition; and adjusting the battery SOC to a target SOC in response to determining that the vehicle satisfies a first correction condition; or refraining from performing a correction in response to determining that the vehicle does not satisfy the first correction condition.

8. The method for correcting the SZ according to claim 7, in which determining, based on the battery data, whether the vehicle satisfies the first correction condition includes: obtaining a time interval from the previous correction point of the power battery and a cumulative throughput of the battery from the previous correction point of the power battery; and determining that the vehicle satisfies the first correction condition in response to the fulfillment of at least one of the following conditions: the specified time interval is greater than the first predetermined duration, or the total throughput of the battery is greater than the first predetermined capacity.

9. A method for correcting the state of charge (SOC) applied to a server, comprising: Obtaining data of the vehicle's loaded power battery; calculating a first SOC of the power battery at a target time based on the battery data and calculating a difference in SOC based on the first SOC and a second SOC of the power battery at a target time in the battery data; and transmitting said difference in SOC to the vehicle, wherein the vehicle deactivates one or more SOC correction strategies for the power battery, calculates a target SOC based on said difference in SOC and the SOC of the power battery at the current moment, and adjusts the SOC of the power battery to the target SOC.

10. The method for correcting the SZ according to paragraph 9, in which, before transmitting the said SZ difference to the vehicle, the method additionally includes: determining, based on the battery data, whether the vehicle satisfies the second correction condition; and transmitting said SZ difference to the vehicle in response to determining that the vehicle satisfies the second correction condition.

11. The method for correcting the SZ according to claim 10, in which determining whether the vehicle satisfies the second correction condition based on the battery data includes: determining, based on the battery data, the previous correction point of the power battery and the cumulative throughput of the power battery from the previous correction point to the current point; and calculating a deviation threshold based on a time interval from the previous correction moment to the current moment and the cumulative throughput of the battery from the previous correction moment to the current moment; and determining whether the vehicle satisfies the second correction condition in response to the fact that said difference in SOC is less than the deviation threshold.

12. The method for correcting the SZ according to paragraph 11, in which the determination, based on the battery data, that the vehicle satisfies the second correction condition further comprises: determining whether the vehicle satisfies the second correction condition in response to at least one of the following conditions being met: the specified time interval is greater than a second predetermined duration, or the total throughput capacity of the battery is greater than a second predetermined capacity.

13. A state of charge (SOC) correction device applied to a vehicle, comprising: a first data collection module configured to receive data from a power battery; a loading module configured to load battery data to a server, wherein the server calculates a first SOC of the power battery at a target time based on the battery data and calculates a difference in SOC based on the first SOC and a second SOC of the power battery at a target time in the battery data; and a correction module configured to deactivate one or more SOC correction strategies for the power battery, calculate a target SOC based on the specified difference between the SOC and the SOC of the power battery at the current moment, and adjust the SOC of the power battery to the target SOC.

14. A state of charge (SOC) correction device applied to a server, comprising: a second data collection module configured to receive data of the power battery loaded by the vehicle; a calculation module configured to calculate a first SOC of a power battery at a target time based on the battery data and to calculate a difference in SOC based on the first SOC and a second SOC of a power battery at a target time in the battery data; and a transmission module configured to transmit said SOC difference to a vehicle, wherein the vehicle deactivates one or more SOC correction strategies for the power battery, calculates a target SOC based on said SOC difference and the SOC of the power battery at the current moment, and corrects the SOC of the power battery to the target SOC.

15. A vehicle containing a headlight correction device according to paragraph 13.

16. A server containing a device for correcting the SZ according to paragraph 14.

17. A machine-readable data carrier storing a computer program, wherein the program, when executed by the processor, performs the method for correcting the SZ according to any of paragraphs 1-8 or the method for correcting the SZ according to any of paragraphs 9-12.