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

Abstract

The present application relates to the technical field of vehicles, in particular to a SOC correction method and device, a vehicle, a server and a storage medium, wherein the method comprises: obtaining battery data of a power battery; uploading the battery data to a server, wherein the server calculates a first state of charge (SOC) of the power battery at a target time according to the battery data, and identifies a battery state of the power battery at the target time in the battery data; calculating a SOC correction value of the power battery according to the battery state of the power battery at a current time and the battery state at the target time, calculating a target SOC according to the first SOC and the SOC correction value, and correcting the SOC of the power battery to the target SOC. Thus, the problems in the prior art that the deviation of the SOC may cause power interruption, the driving safety is low, and the information interaction between the vehicle and the server is delayed, so that the SOC correction strategy may be deviated and the correction result is less accurate are solved.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and specifically to a method, apparatus, vehicle, server, and storage medium for correcting SOC (state of charge). Background Technology

[0002] Lithium batteries play an important role in battery energy storage systems due to their high energy density and long lifespan, and are a crucial energy storage unit in new energy vehicles. Since lithium batteries are complex electrochemical systems with extremely strong nonlinear characteristics, the SOC estimation methods that can be used include the ampere-hour integral method, the equivalent model method, and the machine learning method.

[0003] However, in practical engineering applications, due to the limitations of vehicle-side hardware, the methods in related technologies are difficult to implement complex algorithm strategies, and the SOC is prone to deviation, which may lead to serious problems such as power interruption. Although using cloud computing can reduce the computational pressure, there is a delay in data interaction between the vehicle and the cloud server, and information transmission may be untimely.

[0004] In related technologies, application number 201911214263.1 (Intelligent Battery SOC Management System and Method Based on Cloud Platform) discloses an intelligent battery SOC management system and method based on a cloud platform. This system includes a BMS system and a cloud server. The cloud server readjusts the correction coefficients based on the battery module's operating parameters and historical operating parameter information, obtains new correction coefficients, and sends them to the BMS system. This patent discloses a cloud-based battery management system, providing a 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 cloud interact, the time difference caused by delays during information interaction, and how to adjust the vehicle's SOC.

[0005] Application No. 202111528176.0 (Battery SOC Correction System and Control Method Thereof, Storage Medium and Electric Vehicle) provides a battery SOC correction system and control method for an electric vehicle, 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 and wake-up values ​​of the state of charge uploaded by the data transmission module, it feeds back the initial state of charge value of the electric vehicle at startup to the battery management system or vehicle network user terminal, which can reduce the errors that may occur during battery SOC estimation and improve the accuracy of the estimation. However, this patented SOC correction method only corrects the initial SOC value at power-on and does not consider the delay in information transmission from the cloud to the vehicle. Summary of the Invention

[0006] One objective of this invention is to provide a SOC correction method to address the problems in related technologies where SOC deviations may lead to power interruption and low driving safety; and where delays in information interaction between the vehicle and the server may cause deviations in the SOC correction strategy, resulting in low accuracy of the correction results. A second objective is to provide another SOC correction method; a third objective is to provide a SOC correction device; a fourth objective is to provide another SOC correction device; a fifth objective is to provide a vehicle; a sixth objective is to provide a server; and a seventh objective is to provide a computer-readable medium.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] A State of Charge (SOC) correction method is applied to a vehicle. The method includes: acquiring battery data of a power battery; uploading the battery data to a server, wherein the server calculates a first State of Charge (SOC) of the power battery at a target time based on the battery data, and identifies the battery state of the power battery at the target time in the battery data; calculating a SOC correction value of the power battery from the target time to the current time based on the battery state of the power battery at the current time and the battery state at the target time; calculating a target SOC based on the first SOC and the SOC correction value; and correcting the SOC of the power battery to the target SOC.

[0009] Based on the above technical means, embodiments of the present invention can calculate the SOC of the power battery at a target time through a server, i.e., the accurate SOC of the power battery at the target time. Since the SOC is accurately estimated at the target time by the server, the estimation efficiency can be improved, saving the computing resources for vehicle SOC correction. At the same time, since the SOC correction value is calculated in real time from the target time, i.e., the SOC correction value is accumulated in real time based on the accurate SOC at the target time, the correction target of the power battery SOC can be accurately determined. Thus, by calculating the SOC correction value in real time based on the accurate SOC at the target time, the correction deviation caused by the information interaction delay between the vehicle and the server can be effectively avoided, the accuracy of SOC correction can be improved, and the possibility of power interruption caused by SOC deviation can be reduced, ensuring the safe and stable operation of the vehicle and meeting the needs of actual use.

[0010] Furthermore, the step of calculating the SOC correction value of the power battery based on the battery state at the current time and the battery state at the target time includes: calculating the state change from the target time to the current time based on the battery state at the current time and the battery state at the target time; and calculating the SOC correction value based on the state change and the rated state of the power battery.

[0011] Based on the above technical means, the embodiments of the present invention can take into account the possible delay between vehicle and server communication, and calculate the SOC correction value in real time starting from the target time. That is, the SOC correction value can be accumulated in real time based on the accurate SOC at the target time, thereby effectively avoiding the correction deviation caused by the interaction delay between vehicle and server. This can reduce the impact of communication delay and make the SOC correction strategy more accurate and reliable.

[0012] Furthermore, the step of correcting the SOC of the power battery to the target SOC includes: determining a target correction rate based on the SOC difference between the target SOC and the SOC of the power battery; and correcting the SOC of the power battery according to the target correction rate.

[0013] Based on the above technical means, the embodiments of the present invention can match different correction rates according to different states of the power battery, accurately determine the correction rate in real time, thereby making the correction of the power battery SOC smooth and stable, avoiding problems such as sudden changes in vehicle power, improving safety, and meeting the needs of actual use.

[0014] Furthermore, determining the target correction rate based on the SOC difference between the target SOC and the SOC of the power battery includes: obtaining the SOC difference between the target SOC and the SOC of the power battery at the previous moment; and calculating the target correction rate of the SOC of the power battery at the current moment based on the SOC difference at the previous moment.

[0015] Based on the above technical means, the embodiments of the present invention can calculate the SOC correction value in real time from the target time. The target correction rate is determined based on the SOC difference between the target SOC and the power battery SOC. Since the SOC correction value accumulated in real time in the short term has virtually no impact on the accuracy of SOC estimation, the target SOC correction rate of the power battery can be accurately determined. Thus, the target correction rate can be used for SOC correction, making the correction process more stable and smooth, and meeting the needs of actual use.

[0016] Furthermore, the step of calculating the target correction rate of the SOC of the power battery at the current moment based on the SOC difference at the previous moment includes: if the target SOC is greater than the SOC of the power battery, then when the power battery is in a charging state, a first correction rate is calculated based on the SOC difference; when the power battery is in a discharging state, a second correction rate is calculated based on the SOC difference, wherein the first correction rate is greater than the second correction rate; if the target SOC is less than the SOC of the power battery, then when the power battery is in a discharging state, a third correction rate is calculated based on the SOC difference; when the power battery is in a charging state, a fourth correction rate is calculated based on the SOC difference, wherein the third correction rate is greater than the fourth correction rate.

[0017] Based on the above technical means, the embodiments of the present invention can match the target correction rate for different power battery states respectively. The obtained target correction rate is more in line with the actual situation of the power battery, making the correction of SOC more stable and accurate. This can reduce the possibility of power interruption caused by SOC deviation, make the vehicle power change smoother, and meet the needs of actual use.

[0018] Furthermore, before correcting the SOC of the power battery according to the target correction rate, the method further includes: detecting the current scenario of the vehicle; and correcting the target correction rate according to the current scenario.

[0019] Based on the above technical means, the embodiments of the present invention can adjust the target rate according to different scenarios in which the vehicle is located, so that the target rate of SOC adjustment is more consistent with the actual situation, thereby improving the accuracy and reliability of SOC adjustment, ensuring the safe and stable operation of the vehicle, and meeting the needs of actual use.

[0020] Furthermore, the step of correcting the SOC of the power battery to the target SOC includes: integrating the power battery in real time starting from the current moment to obtain a second SOC; updating the target SOC based on the second SOC until the SOC of the power battery is corrected to the target SOC.

[0021] Based on the above technical means, the embodiments of the present invention can update the current target SOC in real time using the ampere-hour integral method during the process of gradually approaching and correcting the SOC of the power battery. This can improve the accuracy of the SOC correction strategy, make the SOC correction result of the power battery more reliable, improve the safety and stability of vehicle operation, enhance the user experience, and meet the actual use needs.

[0022] Furthermore, the step of 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; if the SOC correction strategy with a priority greater than the preset priority is detected, then the current SOC correction process is stopped, and the SOC of the power battery is corrected based on the SOC correction strategy with a priority greater than the preset priority.

[0023] Based on the above technical means, the embodiments of the present invention can detect and determine whether there is a higher priority correction strategy during the SOC correction process. When there is a higher priority SOC correction strategy, the current SOC fusion process is stopped and the higher priority correction strategy is implemented. Since the higher priority correction strategy is more accurate, the response to the higher priority correction strategy is retained, thereby improving the accuracy of SOC correction, enhancing the safety and stability of vehicle operation, making the correction scheme more consistent with the current vehicle state, and meeting actual use needs.

[0024] A State of Charge (SOC) correction method is applied to a server, comprising: acquiring battery data of a power battery uploaded by a vehicle; calculating a first State of Charge (SOC) of the power battery at a target time based on the battery data, and identifying the battery state of the power battery at the target time in the battery data; sending the first SOC and the battery state at the target time to the vehicle, wherein the vehicle calculates a SOC correction value of the power battery based on the battery state of the power battery at the current time and the battery state at the target time, calculates a target SOC based on the first SOC and the SOC correction value, and corrects the SOC of the power battery to the target SOC.

[0025] A State of Charge (SOC) correction device, applied to a vehicle, comprising: a first acquisition module for acquiring battery data of a power battery; an upload module for uploading the battery data to a server, wherein the server calculates a first State of Charge (SOC) of the power battery at a target time based on the battery data and identifies the battery state of the power battery at the target time in the battery data; and a correction module for calculating a SOC correction value of the power battery based on the battery state of the power battery at the current time and the battery state at the target time, calculating a target SOC based on the first SOC and the SOC correction value, and correcting the SOC of the power battery to the target SOC.

[0026] Furthermore, the correction module is further configured to: calculate the state change from the target time to the current time based on the current battery state and the target battery state; and calculate the SOC correction value based on the state change and the rated state of the power battery.

[0027] Furthermore, the correction module is further configured to: determine a target correction rate based on the SOC difference between the target SOC and the SOC of the power battery; and correct the SOC of the power battery according to the target correction rate.

[0028] Furthermore, the correction module is further configured to: obtain the SOC difference between the target SOC and the SOC of the power battery at the previous moment; and calculate the target correction rate of the SOC of the power battery at the current moment based on the SOC difference at the previous moment.

[0029] Furthermore, the correction module is further configured to: if the target SOC is greater than the SOC of the power battery, calculate a first correction speed based on the SOC difference when the power battery is in a charging state, and calculate a second correction speed based on the SOC difference when the power battery is in a discharging state, wherein the first correction speed is greater than the second correction speed; if the target SOC is less than the SOC of the power battery, calculate a third correction speed based on the SOC difference when the power battery is in a discharging state, and calculate a fourth correction speed based on the SOC difference when the power battery is in a charging state, wherein the third correction speed is greater than the fourth correction speed.

[0030] Furthermore, the correction module is further configured to: detect the current scene of the vehicle; and correct the target correction rate according to the current scene.

[0031] Furthermore, the correction module is further configured to: integrate the power battery in real time from the current moment to obtain a second SOC; update the target SOC according to the second SOC until the SOC of the power battery is corrected to the target SOC.

[0032] Furthermore, the correction module is further configured to: detect whether a SOC correction strategy with a priority greater than a preset priority is triggered during the current SOC correction process; if the SOC correction strategy with a priority greater than the preset priority is detected, then 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.

[0033] A State of Charge (SOC) correction device is applied to a server. The device includes: a second acquisition module for acquiring battery data of a power battery uploaded by a vehicle; a calculation module for calculating a first State of Charge (SOC) of the power battery at a target time based on the battery data, and identifying the battery state of the power battery at the target time in the battery data; and a distribution module for distributing the first SOC and the battery state at the target time to the vehicle. The vehicle calculates a SOC correction value for the power battery based on the battery state at the current time and the battery state at the target time, calculates a target SOC based on the first SOC and the SOC correction value, and corrects the SOC of the power battery to the target SOC.

[0034] A vehicle includes a SOC correction device as described in the above embodiments.

[0035] A server includes a SOC correction device as described in the above embodiments.

[0036] A computer-readable storage medium having a computer program stored thereon, the program being executed by a processor to implement the SOC correction method of the above embodiments.

[0037] The beneficial effects of this invention are:

[0038] (1) The embodiments of the present invention can calculate the SOC of the power battery at the target time through the server, that is, the accurate SOC of the power battery at the target time. Since the SOC is accurately estimated at the target time by the server, the estimation efficiency can be improved and the computing resources for vehicle SOC correction can be saved. At the same time, since the SOC correction value is calculated in real time from the target time, that is, the SOC correction value is accumulated in real time based on the accurate SOC at the target time, the correction target of the power battery SOC can be accurately determined. Thus, the correction value can be calculated in real time based on the accurate SOC at the target time, effectively avoiding the correction deviation caused by the information interaction delay between the vehicle and the server, improving the accuracy of SOC correction, 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.

[0039] (2) The embodiments of the present invention can take into account the possible delay between vehicle and server communication, and calculate the SOC correction value in real time from the target time. That is, the SOC correction value can be accumulated in real time based on the accurate SOC at the target time, thereby effectively avoiding the correction deviation caused by the interaction delay between vehicle and server. This can reduce the impact of communication delay and make the SOC correction strategy more accurate and reliable.

[0040] (3) The embodiments of the present invention can match different correction rates according to different states of the power battery, and determine the correction rate in real time and accurately, so as to make the correction of the power battery SOC smooth and stable, avoid problems such as sudden changes in vehicle power, improve safety, and meet the actual use needs.

[0041] (4) The present invention can calculate the SOC correction value in real time from the target time. The target correction rate is determined based on the SOC difference between the target SOC and the power battery SOC. Since the real-time accumulated SOC correction value in the short term has little impact on the accuracy of SOC estimation, the target SOC correction rate of the power battery can be accurately determined. Thus, the target correction rate can be used for SOC correction, making the correction process more stable and smooth, and meeting the actual use needs.

[0042] (5) The embodiments of the present invention can match the target correction rate for different power battery states respectively. The target correction rate obtained is more in line with the actual situation of the power battery, making the correction of SOC more stable and accurate. This can reduce the possibility of power interruption caused by SOC deviation, making the vehicle power change smoother and meeting the needs of actual use.

[0043] (6) The embodiments of the present invention can adjust the target rate according to different scenarios in which the vehicle is located, so that the target rate of SOC adjustment is more consistent with the actual situation, improves the accuracy and reliability of SOC adjustment, ensures the safe and stable operation of the vehicle, and meets the needs of actual use.

[0044] (7) In the process of gradually approaching and correcting the SOC of the power battery to the target SOC, the current target SOC can be updated in real time using the ampere-hour integral method, thereby improving the accuracy of the SOC correction strategy, making the SOC correction result of the power battery more reliable, improving the safety and stability of vehicle operation, enhancing the user experience, and meeting the actual use needs.

[0045] (8) The embodiments of the present invention can detect and determine whether there is a higher priority correction strategy during the SOC correction process. When there is a higher priority SOC correction strategy, the current SOC fusion process is stopped and the higher priority correction strategy is implemented. Since the higher priority correction strategy is more accurate, the response to the higher priority correction strategy is retained, thereby improving the accuracy of SOC correction, improving the safety and stability of vehicle operation, making the correction scheme more in line with the current vehicle state, and meeting the actual use needs.

[0046] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0047] Figure 1 A flowchart of a SOC correction method according to the present invention;

[0048] Figure 2 This is a diagram illustrating the SOC correction effect in a charging scenario according to the present invention.

[0049] Figure 3 This is a diagram illustrating the SOC correction effect in the discharge scenario of the present invention.

[0050] Figure 4 This is a schematic diagram of the process for correcting the SOC of the power battery according to the present invention;

[0051] Figure 5 A flowchart of another SOC correction method according to the present invention;

[0052] Figure 6 An example diagram of the SOC correction device according to the present invention;

[0053] Figure 7 This is an example diagram of another SOC correction device according to the present invention. Detailed Implementation

[0054] The embodiments of the present invention will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention and not for limiting the scope of protection of the present invention.

[0055] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0056] Among related technologies, lithium batteries play an important role in battery energy storage systems due to their high energy density and long lifespan, and are a crucial energy storage unit in new energy vehicles; lithium batteries are complex electrochemical systems with extremely strong nonlinear characteristics.

[0057] Among them, SOC characterizes the battery's state of charge and is an important basis for battery state monitoring and vehicle control. SOC estimation is one of the core functions of BMS (Battery Management System). The SOC estimation methods in related technologies mainly include: ampere-hour integration method, equivalent model method and machine learning method.

[0058] However, in practical engineering applications, due to the limitations of vehicle-side hardware, it is difficult to implement complex algorithm strategies, and SOC is prone to deviation, which may lead to serious problems such as power interruption. Cloud platforms have stronger computing power than vehicle-side platforms, can run more complex algorithms, and have a large amount of historical vehicle data as support. Moreover, with the continuous development of current technology, the electrification, intelligence, and connectivity of automobiles have become inevitable trends. However, there is a delay in information transmission between vehicles and cloud platform servers in related technologies, resulting in lower accuracy of SOC estimation.

[0059] The present invention provides a SOC correction method, device, vehicle, server, and storage medium to address issues in related technologies, such as SOC deviations potentially leading to power interruption and low driving safety; and delays in information interaction between the vehicle and server causing potential deviations in the SOC correction strategy and resulting in low accuracy of the correction results.

[0060] Specifically, Figure 1 This is a flowchart illustrating a SOC correction method provided in an embodiment of the present invention.

[0061] like Figure 1 As shown, this SOC correction method is applied to a vehicle and includes the following steps:

[0062] In step S101, the battery data of the power battery is obtained.

[0063] The battery data may include current, voltage, temperature, battery status, SOC and SOH (state of health), etc., without specific limitations. The vehicle in this embodiment of the invention can obtain the battery data of the power battery in at least one way, such as using BMS to obtain and upload it to a big data cloud platform as a server, without specific limitations.

[0064] It is understood that the embodiments of the present invention can first obtain the current battery data of the vehicle's power battery to facilitate calculations and other applications in subsequent steps; wherein, the vehicle of the embodiments of the present invention can exchange data with the server, that is, it can upload signals to the server and receive signals sent by the server, and the vehicle can include a BMS system, which has a battery SOC estimation function.

[0065] In step S102, battery data is uploaded to the server, whereby the server calculates the first state of charge (SOC) of the power battery at the target time based on the battery data and identifies the battery state of the power battery at the target time in the battery data.

[0066] The target time can be set according to the actual situation, and there are no specific restrictions on it.

[0067] It is understood that, in this embodiment of the invention, the battery data acquired by the vehicle in step S101 can be uploaded to the server, so that the server can calculate the first state of charge (SOC) based on the acquired data information, and at the same time, the server can identify the battery status. In this embodiment of the invention, the server can interact with the vehicle, that is, the server can receive and store various signals uploaded by the vehicle, and can send corresponding signals to designated vehicles. At the same time, the server can also include intelligent algorithms, which can estimate the SOC in certain scenarios or all scenarios based on the battery-related historical data and real-time data stored on the server. That is, the SOC estimation and related data calculation in this embodiment of the invention can be completed on the server side.

[0068] In step S103, the SOC correction value of the power battery is calculated based on the battery state at the current time and the battery state at the target time. The target SOC is calculated based on the first SOC and the SOC correction value, and the SOC of the power battery is corrected to the target SOC.

[0069] It is understood that the embodiments of the present invention can calculate the target SOC and correct the SOC of the power battery based on the target SOC: First, the SOC correction value of the power battery from the target time to the current time is calculated using the current battery state and the battery state at the target time. Then, the target SOC is calculated using the first SOC of the power battery at the target time and the SOC correction value calculated above, thus completing the calculation of the target SOC. Finally, the SOC of the vehicle's power battery is corrected based on the obtained target SOC. When the vehicle performs SOC correction, the SOC can be based on the target SOC. 目标 For the target value, use the current SOC to adjust the SOC. 目标 SOC correction is achieved by gradually approximating the target value; the calculation process for the SOC correction value in this embodiment of the invention is as follows:

[0070] In this embodiment of the invention, calculating the SOC correction value of the power battery based on the battery state at the current time and the battery state at the target time includes: calculating the change in state from the target time to the current time based on the battery state at the current time and the battery state at the target time; and calculating the SOC correction value based on the change in state and the rated state of the power battery.

[0071] It is understood that embodiments of the present invention can calculate the SOC correction value by the change in the state of the power battery at the current time and the target time and the rated state of the power battery. For example, embodiments of the present invention can calculate the ratio of the change in state to the rated state as the SOC correction value.

[0072] It should be noted that, when performing SOC correction, this embodiment of the invention can also limit the correction rate of the SOC to the target SOC, that is, use a step-by-step approximation method to correct the vehicle's SOC to the target SOC, as follows:

[0073] In this embodiment of the invention, correcting the SOC of the power battery to a target SOC includes: determining a target correction rate based on the SOC difference between the target SOC and the SOC of the power battery; and correcting the SOC of the power battery according to the target correction rate.

[0074] It is understood that the embodiments of the present invention can determine the target correction rate based on the difference between the target SOC and the power battery SOC. The smaller the difference between the target SOC and the power battery SOC, the slower the correction rate; the larger the difference, the faster the correction rate. Furthermore, the closer the target SOC is to the fully charged / discharged state, the faster the correction rate.

[0075] Specifically, the target correction rate is determined based on the SOC difference between the target SOC and the SOC of the power battery, including: obtaining the SOC difference between the target SOC and the SOC of the power battery at the previous moment; and calculating the target correction rate of the SOC of the power battery at the current moment based on the SOC difference at the previous moment.

[0076] Wherein, the target SOC is denoted as target SOC, and the target SOC at the previous moment can be denoted as target SOC(t-1); the power battery SOC can be denoted as vehicle-side SOC; in the following embodiments, target SOC(t-1) and vehicle-side SOC can be used to refer to the target SOC and power battery SOC at the previous moment.

[0077] It is understood that the embodiments of the present invention can calculate the target correction rate of the power battery SOC at the current moment based on the SOC difference between the vehicle-side SOC and the target SOC (t-1); wherein, when calculating the target correction rate, the embodiments of the present invention can distinguish the target correction rate calculation when the power battery is in the charging or discharging state, and distinguish the target correction rate calculation when the target SOC is greater than the vehicle-side SOC and when the target SOC is less than the vehicle-side SOC, as detailed below:

[0078] In this embodiment of the invention, calculating the target correction rate of the SOC of the power battery at the current moment based on the SOC difference at the previous moment includes: if the target SOC is greater than the SOC of the power battery, then when the power battery is in a charging state, a first correction rate is calculated based on the SOC difference, and when the power battery is in a discharging state, a second correction rate is calculated based on the SOC difference, wherein the first correction rate is greater than the second correction rate; if the target SOC is less than the SOC of the power battery, then when the power battery is in a discharging state, a third correction rate is calculated based on the SOC difference, and when the power battery is in a charging state, a fourth correction rate is calculated based on the SOC difference, wherein the third correction rate is greater than the fourth correction rate.

[0079] It is understood that, in this embodiment of the invention, a negative current indicates the power battery is in a charging state, and a positive current indicates the power battery is in a discharging state. When the target SOC is greater than the vehicle-side SOC and the current is negative, the target correction speed calculated in this embodiment is the first correction speed; when the target SOC is greater than the vehicle-side SOC and the current is positive, the calculated target correction speed is the second correction speed; when the target SOC is less than the vehicle-side SOC and the current is negative, the calculated target correction speed is the third correction speed; and when the target SOC is less than the vehicle-side SOC and the current is positive, the calculated target correction speed is the fourth correction speed. The first correction speed is greater than the second correction speed, and the third correction speed is greater than the fourth correction speed. The vehicle-side SOC correction effect in the charging scenario of this embodiment of the invention can be as follows: Figure 2 As shown, the vehicle-side SOC correction effect in the discharge scenario can be as follows: Figure 3 As shown; the specific calculation process can be described as follows:

[0080] (1) When the target SOC is greater than the vehicle-end SOC, the calculation of the first correction speed and the second correction speed is as follows:

[0081] If the target SOC > the vehicle-end SOC, the change in vehicle-end SOC within a single cycle = k * the change in target SOC. When the current is negative, vehicle-end SOC(t) = vehicle-end SOC(t-1) + k1 * [target SOC(t) - target SOC(t-1)], and when the current is positive, vehicle-end SOC(t) = vehicle-end SOC(t-1) + k2 * [target SOC(t) - target SOC(t-1)], therefore, the formulas for calculating the first correction speed k1 and the second correction speed k2 can be: k1 =A1*(Target SOC - Vehicle SOC) + B1*|Target SOC - 50%| + C1, k2 = -A2*(Target SOC - Vehicle SOC) - B2*|Target SOC - 50%| + C2, where k1 and k2 are determined by the vehicle SOC at the previous moment and the difference between the vehicle SOC and the target SOC. The value of k1 is greater than or equal to 1, and the value of k2 is greater than 0 and less than or equal to 1; A1 and A2 are correction coefficients; B1 and B2 are SOC state coefficients; C1 and C2 are baseline coefficients.

[0082] (2) Calculation of the third and fourth corrected speeds when the target SOC is less than the vehicle-end SOC: When the target SOC < vehicle-end SOC and the current is positive, vehicle-end SOC(t) = vehicle-end SOC(t-1) + k3 * [target SOC(t) - target SOC(t-1)]; when the current is negative, vehicle-end SOC(t) = vehicle-end SOC(t-1) + k4 * [target SOC(t) - target SOC(t-1)]; therefore, the formulas for calculating the third corrected speed k3 and the fourth corrected speed k4 can be... k3 = A3 * (vehicle-end SOC - target SOC) + B3 * |target SOC - 50%| + C3, k4 = -A4 * (vehicle-end SOC - target SOC) - B4 * |target SOC - 50%| + C4, where k3 and k4 are determined by the vehicle-end SOC at the previous moment and the difference between the vehicle-end SOC and the target SOC. The value of k3 is greater than or equal to 1, and the value of k4 is greater than 0 and less than or equal to 1. A3 and A4 are correction coefficients; B3 and B4 are SOC state coefficients; C3 and C4 are baseline coefficients.

[0083] It should be noted that the parameters A1~A4 (denoted as An), B1~B4 (denoted as Bn), and C1~C4 (denoted as Cn) are all non-negative numbers. An, Bn, and Cn can be adjusted according to the actual correction rate requirements in different scenarios, as detailed below:

[0084] In this embodiment of the invention, before correcting the SOC of the power battery according to the target correction rate, the method further includes: detecting the current scenario of the vehicle; and correcting the target correction rate according to the current scenario.

[0085] It is understood that when the vehicle is in different actual scenarios, the embodiments of the present invention can modify the target correction rate according to the actual scenario of the current vehicle, that is, the target correction rate can be further modified by modifying An, Bn and Cn; wherein, the larger An is, the greater the absolute value of the difference between the vehicle-end SOC and the target SOC has on the correction rate; the larger Bn is, the faster the target SOC is corrected when it is close to the full / empty state; and the size of Cn affects the overall correction rate.

[0086] In this embodiment of the invention, correcting the SOC of the power battery to the target SOC includes: integrating the power battery in real time from the current moment to obtain a second SOC; updating the target SOC based on the second SOC until the SOC of the power battery is corrected to the target SOC.

[0087] It is understood that, in embodiments of the present invention, the SOC correction process can be terminated when the difference between the vehicle-side SOC and the target SOC is less than or equal to the target SOC; therefore, as Figure 4 As shown, during the process of the vehicle-side SOC gradually approaching the target SOC, this embodiment of the invention can also perform ampere-hour integration on the target SOC to update the target SOC in real time until the SOC correction operation is completed; the specific calculation process of updating the target SOC by ampere-hour integration can be as follows:

[0088]

[0089] Among them, SOC 目标，原 The SOC calculated directly from the signals received by the server is as described above. 目标 SOC 目标，新 To achieve a real-time updated target SOC value, the target value that the vehicle-side SOC should approximate in real time is the SOC. 目标，新 .

[0090] In this embodiment of the invention, 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; if a 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.

[0091] In this embodiment of the invention, the priority and preset priority of the SOC correction strategy can be set according to the actual situation. For example, a correction strategy with higher priority may include full charge correction, effective OCV-SOC (Open Circuit Voltage) correction, etc., without specific limitation.

[0092] It is understood that after the vehicle receives the information from the server, the embodiments of the present invention can also verify the validity of the relevant information and select an appropriate SOC correction time according to the vehicle status, such as when the vehicle is powered on or when the vehicle is stationary, without making specific limitations; and the embodiments of the present invention can determine whether a correction strategy with a higher priority than the preset priority exists in the current SOC correction process during the verification and trigger it. When a correction strategy with a higher priority than the preset priority exists, the vehicle can stop the current SOC correction process and use a higher priority SOC correction strategy to correct the SOC of the power battery.

[0093] In summary, the SOC correction method proposed according to embodiments of the present invention has at least the following advantages:

[0094] (1) The embodiments of the present invention can calculate the SOC of the power battery at the target time through the server, that is, the accurate SOC of the power battery at the target time. Since the SOC is accurately estimated at the target time by the server, the estimation efficiency can be improved and the computing resources for vehicle SOC correction can be saved. At the same time, since the SOC correction value is calculated in real time from the target time, that is, the SOC correction value is accumulated in real time based on the accurate SOC at the target time, the correction target of the power battery SOC can be accurately determined. Thus, the correction value can be calculated in real time based on the accurate SOC at the target time, effectively avoiding the correction deviation caused by the information interaction delay between the vehicle and the server, improving the accuracy of SOC correction, 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.

[0095] (2) The embodiments of the present invention can take into account the possible delay between vehicle and server communication, and calculate the SOC correction value in real time from the target time. That is, the SOC correction value can be accumulated in real time based on the accurate SOC at the target time, thereby effectively avoiding the correction deviation caused by the interaction delay between vehicle and server. This can reduce the impact of communication delay and make the SOC correction strategy more accurate and reliable.

[0096] (3) The embodiments of the present invention can match different correction rates according to different states of the power battery, and determine the correction rate in real time and accurately, so as to make the correction of the power battery SOC smooth and stable, avoid problems such as sudden changes in vehicle power, improve safety, and meet the actual use needs.

[0097] (4) The present invention can calculate the SOC correction value in real time from the target time. The target correction rate is determined based on the SOC difference between the target SOC and the power battery SOC. Since the real-time accumulated SOC correction value in the short term has little impact on the accuracy of SOC estimation, the target SOC correction rate of the power battery can be accurately determined. Thus, the target correction rate can be used for SOC correction, making the correction process more stable and smooth, and meeting the actual use needs.

[0098] (5) The embodiments of the present invention can match the target correction rate for different power battery states respectively. The target correction rate obtained is more in line with the actual situation of the power battery, making the correction of SOC more stable and accurate. This can reduce the possibility of power interruption caused by SOC deviation, making the vehicle power change smoother and meeting the needs of actual use.

[0099] (6) The embodiments of the present invention can adjust the target rate according to different scenarios in which the vehicle is located, so that the target rate of SOC adjustment is more consistent with the actual situation, improves the accuracy and reliability of SOC adjustment, ensures the safe and stable operation of the vehicle, and meets the needs of actual use.

[0100] (7) In the process of gradually approaching and correcting the SOC of the power battery to the target SOC, the current target SOC can be updated in real time using the ampere-hour integral method, thereby improving the accuracy of the SOC correction strategy, making the SOC correction result of the power battery more reliable, improving the safety and stability of vehicle operation, enhancing the user experience, and meeting the actual use needs.

[0101] (8) The embodiments of the present invention can detect and determine whether there is a higher priority correction strategy during the SOC correction process. When there is a higher priority SOC correction strategy, the current SOC fusion process is stopped and the higher priority correction strategy is implemented. Since the higher priority correction strategy is more accurate, the response to the higher priority correction strategy is retained, thereby improving the accuracy of SOC correction, improving the safety and stability of vehicle operation, making the correction scheme more in line with the current vehicle state, and meeting the actual use needs.

[0102] Based on the SOC correction of the previous embodiment, this embodiment of the invention provides another SOC correction method. This embodiment and the previous embodiment each have their own emphasis in their descriptions, and steps not fully described in each embodiment can be referred to mutually. The following describes another SOC correction method according to an embodiment of the present invention with reference to the accompanying drawings.

[0103] Specifically, Figure 5 This is a flowchart illustrating another SOC correction method provided in an embodiment of the present invention.

[0104] like Figure 5 As shown, this SOC correction method is applied to a server, and the method includes the following steps:

[0105] In step S201, the battery data of the power battery uploaded by the vehicle is obtained.

[0106] The uploaded battery data can include information such as the vehicle's battery current, voltage, temperature, SOC, SOH, and battery status.

[0107] It is understood that the server in this embodiment of the invention can first obtain the battery data of the power battery uploaded by the vehicle in step S102, so as to facilitate the subsequent calculation of the first state of charge (SOC).

[0108] In step S202, the first state of charge (SOC) of the power battery at the target time is calculated based on the battery data, and the battery state of the power battery at the target time is identified in the battery data.

[0109] It is understood that the server in this embodiment of the invention can perform calculations on the server side after obtaining the uploaded battery data to calculate the first SOC of the power battery at the target time and identify the battery state of the power battery at the target time, so as to facilitate the subsequent distribution of relevant data to the vehicle; wherein, the calculation process of the relevant first SOC has been described in detail in the above embodiments and will not be repeated here.

[0110] In step S203, the first SOC and the battery state at the target time are sent to the vehicle. The vehicle calculates the SOC correction value of the power battery based on the battery state at the current time and the battery state at the target time, calculates the target SOC based on the first SOC and the SOC correction value, and corrects the SOC of the power battery to the target SOC.

[0111] It is understood that the server in this embodiment of the invention can send the first SOC and the battery state at the target time calculated and identified in step S102 to the vehicle, so as to facilitate the vehicle's calculation of the SOC correction value and the correction of the SOC. Therefore, this embodiment of the invention can take into account the possible latency between the server and the vehicle, and reduce the error of the target SOC by calculating the SOC correction value, making the SOC correction more accurate and reliable.

[0112] According to the SOC correction method proposed in this embodiment of the invention, the SOC of the power battery at a target time can be calculated by a server, i.e., the accurate SOC of the power battery at the target time. Since the SOC is accurately estimated at the target time by the server, the estimation efficiency can be improved, and the computing resources for vehicle SOC correction can be saved. At the same time, since the SOC correction value is calculated in real time from the target time, i.e., the SOC correction value is accumulated in real time based on the accurate SOC at the target time, the correction target of the power battery SOC can be accurately determined. Thus, by calculating the SOC correction value in real time based on the accurate SOC at the target time, the correction deviation caused by the information interaction delay between the vehicle and the server can be effectively avoided, the accuracy of SOC correction can be improved, and the possibility of power interruption caused by SOC deviation can be reduced, ensuring the safe and stable operation of the vehicle and meeting the needs of actual use.

[0113] The SOC correction apparatus according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0114] Figure 6 This is a block diagram of the SOC correction device according to an embodiment of the present invention.

[0115] like Figure 6 As shown, the SOC correction device 10 is applied to a vehicle and includes: a first acquisition module 110, an upload module 120, and a correction module 130.

[0116] The first acquisition module 110 is used to acquire battery data of the power battery; the upload module 120 is used to upload the battery data to the server, wherein the server calculates the first state of charge (SOC) of the power battery at the target time based on the battery data and identifies the battery state of the power battery at the target time in the battery data; the correction module 130 is used to calculate the SOC correction value of the power battery based on the battery state of the power battery at the current time and the battery state at the target time, calculate the target SOC based on the first SOC and the SOC correction value, and correct the SOC of the power battery to the target SOC.

[0117] In this embodiment of the invention, the correction module 130 is further configured to: calculate the state change from the target time to the current time based on the current battery state and the target battery state; and calculate the SOC correction value based on the state change and the rated state of the power battery.

[0118] In this embodiment of the invention, the correction module 130 is further configured to: determine a target correction rate based on the SOC difference between the target SOC and the SOC of the power battery; and correct the SOC of the power battery according to the target correction rate.

[0119] In this embodiment of the invention, the correction module 130 is further configured to: obtain the SOC difference between the target SOC and the SOC of the power battery at the previous moment; and calculate the target correction rate of the SOC of the power battery at the current moment based on the SOC difference at the previous moment.

[0120] In this embodiment of the invention, the correction module 130 is further configured to: if the target SOC is greater than the SOC of the power battery, calculate a first correction speed based on the SOC difference when the power battery is in a charging state, and calculate a second correction speed based on the SOC difference when the power battery is in a discharging state, wherein the first correction speed is greater than the second correction speed; if the target SOC is less than the SOC of the power battery, calculate a third correction speed based on the SOC difference when the power battery is in a discharging state, and calculate a fourth correction speed based on the SOC difference when the power battery is in a charging state, wherein the third correction speed is greater than the fourth correction speed.

[0121] In this embodiment of the invention, the correction module 130 is further configured to: detect the current scene of the vehicle; and correct the target correction rate according to the current scene.

[0122] In this embodiment of the invention, the correction module 130 is further configured to: integrate the power battery from the current moment to obtain the second SOC in real time; update the target SOC according to the second SOC until the SOC of the power battery is corrected to the target SOC.

[0123] In this embodiment of the invention, the correction module 130 is further configured to: detect whether a SOC correction strategy with a priority greater than a preset priority is triggered during the current SOC correction process; if a SOC correction strategy with a priority greater than a 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 a preset priority.

[0124] It should be noted that the foregoing explanation of the SOC correction method embodiment also applies to the SOC correction device of this embodiment, and will not be repeated here.

[0125] The SOC correction device proposed in this embodiment of the invention can calculate the SOC of the power battery at a target time through a server, i.e., the accurate SOC of the power battery at the target time. Since the SOC is accurately estimated at the target time by the server, the estimation efficiency can be improved, saving the computing resources for vehicle SOC correction. At the same time, since the SOC correction value is calculated in real time from the target time, i.e., the SOC correction value is accumulated in real time based on the accurate SOC at the target time, the correction target of the power battery SOC can be accurately determined. Thus, by calculating the SOC correction value in real time based on the accurate SOC at the target time, the correction deviation caused by the information interaction delay between the vehicle and the server can be effectively avoided, improving the accuracy of SOC correction. This can reduce the possibility of power interruption caused by SOC deviation, ensure the safe and stable operation of the vehicle, and meet the needs of actual use.

[0126] Another SOC correction device according to an embodiment of the present invention will now be described with reference to the accompanying drawings.

[0127] Figure 7 This is a block diagram of the SOC correction device according to an embodiment of the present invention.

[0128] like Figure 7 As shown, the SOC correction device 20 is applied to a server and includes: a second acquisition module 210, a calculation module 220, and a distribution module 230.

[0129] The second acquisition module 210 is used to acquire battery data of the power battery uploaded by the vehicle; the calculation module 220 is used to calculate the first state of charge (SOC) of the power battery at the target time based on the battery data, and identify the battery state of the power battery at the target time in the battery data; the sending module 230 is used to send the first SOC and the battery state at the target time to the vehicle, wherein the vehicle calculates the SOC correction value of the power battery based on the battery state at the current time and the battery state at the target time, calculates the target SOC based on the first SOC and the SOC correction value, and corrects the SOC of the power battery to the target SOC.

[0130] It should be noted that the foregoing explanation of the SOC correction method embodiment also applies to the SOC correction device of this embodiment, and will not be repeated here.

[0131] The SOC correction device proposed in this embodiment of the invention can calculate the SOC of the power battery at a target time through a server, i.e., the accurate SOC of the power battery at the target time. Since the SOC is accurately estimated at the target time by the server, the estimation efficiency can be improved, saving the computing resources for vehicle SOC correction. At the same time, since the SOC correction value is calculated in real time from the target time, i.e., the SOC correction value is accumulated in real time based on the accurate SOC at the target time, the correction target of the power battery SOC can be accurately determined. Thus, by calculating the SOC correction value in real time based on the accurate SOC at the target time, the correction deviation caused by the information interaction delay between the vehicle and the server can be effectively avoided, improving the accuracy of SOC correction. This can reduce the possibility of power interruption caused by SOC deviation, ensure the safe and stable operation of the vehicle, and meet the needs of actual use.

[0132] This invention also provides a vehicle including the SOC correction device as described in the above embodiments.

[0133] This invention also provides a server, including the SOC correction device as described in the above embodiments.

[0134] This invention also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described SOC correction method.

[0135] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0136] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "N" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0137] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or N executable instructions for implementing custom logic functions or processes, and the scope of preferred embodiments of the invention includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as will be understood by those skilled in the art to which embodiments of the invention pertain.

[0138] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware as in another embodiment, it can be implemented using any of the following techniques known in the art, or a combination thereof: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (FPGAs), field-programmable gate arrays (FPGAs), etc.

[0139] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0140] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A SOC correction method, characterized in that, The method is applied to a vehicle, and the method includes the following steps: Obtain battery data for the power battery; The battery data is uploaded to the server, wherein the server calculates the first state of charge (SOC) of the power battery at the target time based on the battery data, and identifies the battery state of the power battery at the target time in the battery data; The SOC correction value of the power battery is calculated based on the battery state at the current time and the battery state at the target time. The target SOC is calculated based on the first SOC and the SOC correction value. The SOC of the power battery is then corrected to the target SOC. The step of correcting the SOC of the power battery to the target SOC includes: Determining the target correction rate based on the SOC difference between the target SOC and the SOC of the power battery includes: obtaining the SOC difference between the target SOC and the SOC of the power battery at the previous moment; The calculation of the target correction rate for the SOC of the power battery at the current moment based on the SOC difference at the previous moment includes: if the target SOC is greater than the SOC of the power battery, then when the power battery is in a charging state, a first correction rate is calculated based on the SOC difference; when the power battery is in a discharging state, a second correction rate is calculated based on the SOC difference, wherein the first correction rate is greater than the second correction rate; if the target SOC is less than the SOC of the power battery, then when the power battery is in a discharging state, a third correction rate is calculated based on the SOC difference; when the power battery is in a charging state, a fourth correction rate is calculated based on the SOC difference, wherein the third correction rate is greater than the fourth correction rate. The SOC of the power battery is corrected according to the target correction rate.

2. The SOC correction method according to claim 1, characterized in that, The step of calculating the SOC correction value of the power battery based on the battery state at the current moment and the battery state at the target moment includes: Calculate the state change from the target time to the current time based on the current battery state and the target battery state; The SOC correction value is calculated based on the state change and the rated state of the power battery.

3. The SOC correction method according to claim 1, characterized in that, Before correcting the SOC of the power battery according to the target correction rate, the method further includes: Detect the current scene of the vehicle; The target correction rate is adjusted based on the current scenario.

4. The SOC correction method according to claim 1 or 3, characterized in that, The step of correcting the SOC of the power battery to the target SOC includes: The second SOC is obtained in real time by integrating the power battery starting from the current moment; The target SOC is updated based on the second SOC until the SOC of the power battery is corrected to the target SOC.

5. The SOC correction method according to claim 1, characterized in that, The step of correcting the SOC of the power battery to the target SOC includes: Detect whether a SOC correction strategy with a priority higher than the preset priority is triggered during the current SOC correction process; If a SOC correction strategy with a priority greater than a preset priority is detected, the current SOC correction process is stopped, and the SOC of the power battery is corrected based on the SOC correction strategy with a priority greater than the preset priority.

6. A SOC correction method, characterized in that, The method is applied to a server, and the method includes the following steps: Obtain battery data uploaded by the vehicle's power battery; Calculate the first state of charge (SOC) of the power battery at the target time based on the battery data, and identify the battery state of the power battery at the target time in the battery data; The first SOC and the battery state at the target time are sent to the vehicle. The vehicle calculates the SOC correction value of the power battery based on the battery state at the current time and the battery state at the target time, calculates the target SOC based on the first SOC and the SOC correction value, and corrects the SOC of the power battery to the target SOC. The step of correcting the SOC of the power battery to the target SOC includes: Determining the target correction rate based on the SOC difference between the target SOC and the SOC of the power battery includes: obtaining the SOC difference between the target SOC and the SOC of the power battery at the previous moment; The calculation of the target correction rate for the SOC of the power battery at the current moment based on the SOC difference at the previous moment includes: if the target SOC is greater than the SOC of the power battery, then when the power battery is in a charging state, a first correction rate is calculated based on the SOC difference; when the power battery is in a discharging state, a second correction rate is calculated based on the SOC difference, wherein the first correction rate is greater than the second correction rate; if the target SOC is less than the SOC of the power battery, then when the power battery is in a discharging state, a third correction rate is calculated based on the SOC difference; when the power battery is in a charging state, a fourth correction rate is calculated based on the SOC difference, wherein the third correction rate is greater than the fourth correction rate. The SOC of the power battery is corrected according to the target correction rate.

7. A SOC correction apparatus for performing the SOC correction method as described in any one of claims 1-5, characterized in that, The device is applied to a vehicle, wherein the device includes: The first acquisition module is used to acquire battery data of the power battery; An upload module is used to upload the battery data to the server, wherein the server calculates the first state of charge (SOC) of the power battery at the target time based on the battery data, and identifies the battery state of the power battery at the target time in the battery data; The correction module is used to calculate the SOC correction value of the power battery from the target time to the current time based on the battery state of the power battery at the current time and the battery state at the target time, calculate the target SOC based on the first SOC and the SOC correction value, and correct the SOC of the power battery to the target SOC.

8. A SOC correction apparatus for performing the SOC correction method as described in claim 6, characterized in that, The device is used in a server, wherein the device includes: The second acquisition module is used to acquire battery data of the power battery uploaded by the vehicle; The calculation module is used to calculate the first state of charge (SOC) of the power battery at the target time based on the battery data, and to identify the battery state of the power battery at the target time in the battery data. The delivery module is used to deliver the first SOC and the battery status at the target time to the vehicle. The vehicle calculates the SOC correction value of the power battery based on the battery status at the current time and the battery status at the target time, calculates the target SOC based on the first SOC and the SOC correction value, and corrects the SOC of the power battery to the target SOC.

9. A vehicle, characterized in that, Includes the SOC correction device as described in claim 7.

10. A server, characterized in that, Includes the SOC correction device as described in claim 8.

11. A computer-readable storage medium having a computer program stored thereon, characterized in that, The program is executed by the processor to implement the SOC correction method as described in any one of claims 1-6.

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