CN-122008954-A - Battery electric quantity calibration method and device, electronic equipment and storage medium

CN122008954ACN 122008954 ACN122008954 ACN 122008954ACN-122008954-A

Abstract

The application discloses a battery electric quantity calibration method, a device, electronic equipment and a storage medium, which comprise the steps of acquiring a charging limit value currently set by a user under the condition that a vehicle is in a charging state, judging whether the vehicle meets a preset calibration triggering condition one by one according to a preset sequence if the charging limit value is lower than a full charge threshold value of the battery, wherein the preset calibration triggering condition is set based on at least one factor in an environment temperature, a driving style, a driving mileage, a standing time length and a vehicle cycle, and sending prompt information for executing full charge calibration to the user if the vehicle meets any calibration triggering condition, and controlling the vehicle to execute full charge calibration in response to receiving confirmation operation of the prompt information by the user. The application reasonably and automatically triggers full charge calibration, effectively reduces the service life damage of the battery caused by long-term expiration of charge, and properly corrects the deviation of battery electric quantity estimation effectively, thereby balancing the requirements of users for prolonging the service life of the battery and ensuring the cruising display precision.

Inventors

WANG YITONG
ZHAN GUOQIANG
LI YAN
LI ZHIJIAN

Assignees

广州汽车集团股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260312

Claims (10)

1. A method of calibrating battery charge, the method comprising: Acquiring a charging limit value currently set by a user under the condition that the vehicle is in a charging state; If the charging limit value is lower than the full charge threshold value of the battery, judging whether the vehicle meets preset calibration triggering conditions one by one according to a preset sequence, wherein the preset calibration triggering conditions are set based on at least one factor of the environmental temperature, the driving style, the driving mileage, the standing time length and the vehicle cycle; If the vehicle meets any calibration triggering condition, sending prompt information for executing full charge calibration to a user; and responding to the received confirmation operation of the user on the prompt information, and controlling the vehicle to execute full charge calibration.
2. The method according to claim 1, wherein if the charging limit is lower than a full charge threshold of the battery, determining whether the vehicle meets a preset calibration trigger condition one by one in a preset order comprises: If the charging limit value is lower than the full charge threshold value of the battery, determining a preset sequence for judging the calibration triggering condition, wherein the preset sequence is sequentially the ambient temperature, the driving style, the driving mileage, the standing time length and the vehicle cycle; According to a preset sequence, acquiring the environment temperature, driving style, driving mileage, standing duration and vehicle cycle of the vehicle, and judging whether the vehicle meets preset calibration triggering conditions one by one.
3. The method according to claim 2, wherein the steps of obtaining the ambient temperature, driving style, mileage, rest time period, and cycle time of the vehicle in a predetermined order, and determining whether the vehicle satisfies a predetermined calibration trigger condition one by one, include: Judging whether the environmental temperature of the vehicle meets a first calibration triggering condition, if so, the vehicle meets the calibration triggering condition and ending the judgment; If not, judging whether the driving style of the user meets the second calibration triggering condition, if so, the vehicle meets the calibration triggering condition and the judgment is finished; if not, judging whether the driving mileage of the vehicle meets the third calibration triggering condition, if so, the vehicle meets the calibration triggering condition and ends the judgment; if not, judging whether the standing time length of the vehicle meets the fourth calibration triggering condition, if so, the vehicle meets the calibration triggering condition and ends the judgment; if not, judging whether the vehicle cycle of the vehicle meets the fifth calibration triggering condition, if so, the vehicle meets the calibration triggering condition and ends the judgment, otherwise, the vehicle does not meet the calibration triggering condition.
4. A method according to claim 3, characterized in that the method further comprises: If the accumulated time length of the environmental temperature of the vehicle in the preset temperature interval exceeds a first threshold value, the environmental temperature of the vehicle meets the first calibration triggering condition; if the number of times of emergency acceleration and deceleration of the user in the preset driving mileage exceeds a second threshold value or the average energy consumption of the vehicle is larger than a third threshold value, the driving style of the user meets the second calibration triggering condition; if the driving mileage of the vehicle in the preset period exceeds a fourth threshold value, the driving mileage of the vehicle meets the third calibration triggering condition; if the standing time length of the vehicle in the preset period exceeds a fifth threshold value, the standing time length of the vehicle meets the fourth calibration triggering condition; and if the vehicle cycle exceeds a sixth threshold, the vehicle cycle satisfies the fifth calibration triggering condition.
5. The method according to any one of claims 1 to 4, wherein the sending a prompt message to the user to perform the full charge calibration if the vehicle meets any one of the calibration triggering conditions comprises: If the vehicle meets any calibration triggering condition, ending judgment and sending prompt information for executing full charge calibration to a user, wherein the prompt information is displayed locally or by a remote terminal through a vehicle machine and is used for the user to confirm whether the full charge calibration is executed.
6. The method of claim 1, wherein controlling the vehicle to perform a full charge calibration in response to receiving a confirmation operation of the prompt message from the user comprises: Responding to the confirmation operation of the user on the prompt information, and adjusting the charging limit value of the current charging from the charging limit value set by the user to a full charge threshold value of full charge calibration; And controlling the battery to charge according to a full charge calibration strategy until the electric quantity of the battery meets the full charge threshold, and recovering the charging limit value of the current charge to the charging limit value set by the user.
7. The method according to claim 1, wherein the method further comprises: and if the vehicle does not meet any calibration triggering condition, resetting the timing or counting associated with the calibration triggering condition judgment, and charging the battery according to the charging limit value currently set by the user.
8. A battery charge calibration apparatus, the apparatus comprising: the charging limit value acquisition module is used for acquiring a charging limit value currently set by a user under the condition that the vehicle is in a charging state; The condition judgment module is used for judging whether the vehicle meets a preset calibration triggering condition one by one according to a preset sequence if the charging limit value is lower than the full charge threshold value of the battery, wherein the preset calibration triggering condition is set based on at least one factor of the environment temperature, the driving style, the driving mileage, the standing time length and the vehicle cycle; the calibration prompt module is used for sending prompt information for executing full charge calibration to a user if the vehicle meets any calibration triggering condition; and the control calibration module is used for responding to the received confirmation operation of the user on the prompt information and controlling the vehicle to execute full charge calibration.
9. An electronic device comprising a processor, a memory and a program or instruction stored on the memory and executable on the processor, which when executed by the processor, implements the steps of the battery charge calibration method of any one of claims 1-7.
10. A readable storage medium, characterized in that it has stored thereon a program or instructions which, when executed by a processor, implement the steps of the battery charge calibration method according to any of claims 1-7.

Description

Battery electric quantity calibration method and device, electronic equipment and storage medium Technical Field The application belongs to the technical field of intelligent charging, and particularly relates to a battery electric quantity calibration method and device, electronic equipment and a storage medium. Background The accurate estimation of the battery remaining capacity (SOC) is a core basis for energy management and endurance mileage prediction of the electric vehicle, and directly affects the user experience and driving safety. Accurate SOC is a key to guaranteeing the reliability of the display of the range of the vehicle and the evaluation and management of the Battery management system (Battery MANAGEMENT SYSTEM, BMS). At present, a battery electric quantity calibration mode mainly based on full charge calibration is generally adopted in the industry to reset the battery residual electric quantity displayed in a continuous voyage or correct the error between the battery residual electric quantity and the actual battery condition, however, because the vehicle meets the condition of triggering the full charge calibration only when the charging limit value is set to be 100%, if a user pursues the battery electric quantity accurately displayed in the continuous voyage, the charging limit value is required to be fixed to the full charge calibration limit value, the lithium ion battery is in a high-voltage stress state for a long time due to frequent full charge, the structural decay and electrolyte decomposition of the anode material are aggravated, and the thickening and lithium deposition of the SEI film on the cathode surface are accelerated, so that the service life of the battery is obviously shortened; if the user pursues the protection of the battery life, the charging limit value is fixed to be in the range of 80% -90%, the battery is prevented from entering a high-voltage zone, the battery management system cannot obtain the opportunity of full charge calibration for a long time, the SOC estimation errors are continuously accumulated and cannot be effectively calibrated, and the user is in a dilemma, namely, if the user chooses to carry out the insufficient charge for protecting the battery, the risk of inaccurate battery residual electricity is born, if the user takes the accurate battery residual electricity to carry out the long-term full charge, the battery long-term life is sacrificed, and therefore, the battery life is damaged due to the current long-term full charge, the contradiction of inaccurate battery residual electricity display occurs due to the insufficient full charge, the requirements of the user pursuing the battery life and the continuous charge display precision cannot be balanced, and the vehicle use experience of the user is affected. Disclosure of Invention The embodiment of the application aims to provide a battery electric quantity calibration method, device, electronic equipment and storage medium, which can solve the problems that the service life of a battery is damaged due to long-term full charge, the battery residual electric quantity display inaccuracy contradiction occurs due to insufficient charge, the requirements of a user on pursuing the service life of the battery and the endurance display precision cannot be balanced, and the user experience is affected. In order to solve the technical problems, the application is realized as follows: in a first aspect, an embodiment of the present application provides a method for calibrating a battery power, including: Acquiring a charging limit value currently set by a user under the condition that the vehicle is in a charging state; If the charging limit value is lower than the full charge threshold value of the battery, judging whether the vehicle meets preset calibration triggering conditions one by one according to a preset sequence, wherein the preset calibration triggering conditions are set based on at least one factor of the environmental temperature, the driving style, the driving mileage, the standing time length and the vehicle cycle; If the vehicle meets any calibration triggering condition, sending prompt information for executing full charge calibration to a user; and responding to the received confirmation operation of the user on the prompt information, and controlling the vehicle to execute full charge calibration. According to the technical means, under the condition that the vehicle is in a charging state, whether the charging limit value currently set by a user meets the condition of full charge calibration is judged, so that under the condition that the user selects the charging limit value which is not full charge, a plurality of influence factors of the continuous voyage display precision are synthesized, the trigger judgment of the full charge calibration is efficiently and orderly carried out, the full charge calibration is reasonably and automatically triggered, the service life damage o