CN-122008951-A - Vehicle charging correction method and device, vehicle and storage medium

CN122008951ACN 122008951 ACN122008951 ACN 122008951ACN-122008951-A

Abstract

The application relates to the technical field of charging correction, in particular to a vehicle charging correction method, a device, a vehicle and a storage medium, wherein the method comprises the steps of obtaining historical charging data of the vehicle which is out of charging under the condition of underfilling; and in the vehicle charging process, if the current voltage value of the power battery is identified to reach the calibration voltage value, correcting the current charge state displayed by the vehicle into the calibration charge state. Therefore, the problem that in the related art, when the vehicle exits from a charging scene under the condition of not fully charging, the SOC displayed by the vehicle cannot be corrected under the condition of fully charging, and the SOC displayed by the vehicle is inaccurate is solved.

Inventors

XIN WENPING
AI MINGSHENG
DU YAXIN
DONG XI
LI BAOCHEN
Hao Changshi
GU YEMING
ZHAO ERMING
Ge Suyu

Assignees

北汽福田汽车股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260202

Claims (10)

1. A vehicle charge correction method, characterized by comprising the steps of: Acquiring historical charging data of the vehicle which is withdrawn from charging under the condition of underfilling; determining a calibration point of the power battery according to the historical charging data, identifying a calibration voltage value of the calibration point, and determining a calibration charge state of the power battery according to the calibration voltage value of the calibration point; And in the vehicle charging process, if the current voltage value of the power battery is recognized to reach the calibration voltage value, correcting the current charge state displayed by the vehicle into the calibration charge state.
2. The vehicle charge correction method according to claim 1, characterized in that the determining of the calibration point of the power battery from the historical charge data includes: identifying at least one historical state of charge of the power battery in the historical charge data; and taking the minimum state of charge in the historical states of charge as a calibration point of the power battery.
3. The vehicle charge correction method according to claim 2, characterized by further comprising, before determining a calibration point of a power battery from the historical charge data: Identifying a first number of times in the historical charging data when the vehicle exits charging under an underfill condition; And if the first time number is larger than a preset first time number threshold value, selecting a minimum state of charge from at least one historical state of charge.
4. The vehicle charge correction method according to claim 1, characterized in that the determining the calibration state of charge of the power battery from the calibration voltage value includes: Acquiring a corresponding relation table of the calibration voltage value and the calibration state of charge; and inquiring the corresponding relation table according to the calibration voltage value to obtain the calibration charge state of the power battery.
5. The vehicle charge correction method according to claim 1, characterized by further comprising, before correcting the current state of charge displayed by the vehicle to the calibration state of charge: if the current voltage value is smaller than the calibration voltage value, acquiring the current state of charge; And if the current state of charge does not reach the reference state of charge corresponding to the calibration point, reducing the rising rate of the current state of charge displayed by the vehicle.
6. The vehicle charge correction method according to claim 1, characterized by further comprising, before correcting the current state of charge displayed by the vehicle to the calibration state of charge: Identifying at least one of a charging mode in the current charging data, a cell voltage, a charging current, a current temperature, charging correction data, and a current state of charge of the power battery; Determining a voltage threshold value and a current threshold value according to the current temperature, and identifying a second time when the power battery triggers the current state of charge correction in a preset duration in the charging correction data; And determining whether the power battery meets an underfill correction condition according to at least one of the charging mode, the single voltage, the charging current, the voltage threshold, the current threshold, the second times and the current state of charge, and triggering the correction action of the current state of charge displayed by the vehicle when the power battery meets the underfill correction condition.
7. The vehicle charge correction method according to claim 6, characterized in that the underfill correction condition includes at least one of: the charging mode is a preset target mode; the cell voltage is greater than the voltage threshold; the charging current is less than the current threshold; The second times are smaller than or equal to a preset second time threshold value; The current state of charge is less than the calibration state of charge.
8. A vehicle charge correction device, characterized by comprising: the acquisition module acquires historical charging data of the vehicle which exits from charging under the condition of underfilling; the determining module is used for determining a calibration point of the power battery according to the historical charging data, identifying a calibration voltage value of the calibration point and determining a calibration charge state of the power battery according to the calibration voltage value of the calibration point; and the correction module is used for correcting the current charge state displayed by the vehicle into the calibration charge state if the current voltage value of the power battery is recognized to reach the calibration voltage value in the vehicle charging process.
9. A vehicle comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor executing the program to implement the vehicle charge correction method of any one of claims 1-7.
10. A computer readable storage medium having stored thereon a computer program or instructions, which when executed, implement the vehicle charge correction method of any of claims 1-7.

Description

Vehicle charging correction method and device, vehicle and storage medium Technical Field The present application relates to the field of charging correction technologies, and in particular, to a vehicle charging correction method and apparatus, a vehicle, and a storage medium. Background In the charging process of the electric automobile, the battery management system is responsible for monitoring the state of the battery and controlling the charging process. Common charging strategies include SOC (State of Charge) display and correction according to parameters such as voltage, current, and temperature. In the related art, a customer or a pile has a scene of stopping charging when not fully charged, and cannot trigger a full charge correction strategy, so that the display SOC deviates from the real SOC, and the customer may have the problems of quick decrease of the SOC, small driving range and the like in perception. Disclosure of Invention The application provides a vehicle charging correction method, a vehicle charging correction device, a vehicle and a storage medium, which are used for solving the problem that in the related art, when a vehicle is not fully charged and exits from a charging scene, the displayed SOC of the vehicle cannot be fully charged and corrected, and the displayed SOC of the vehicle is inaccurate. An embodiment of the first aspect of the application provides a vehicle charging correction method, which comprises the following steps of obtaining historical charging data of a vehicle which exits from charging under the condition of no-fully charged state, determining a calibration point of a power battery according to the historical charging data, identifying a calibration voltage value of the calibration point, and determining a calibration charge state of the power battery according to the calibration voltage value of the calibration point. Optionally, determining the calibration point of the power battery based on the historical charging data includes identifying at least one historical state of charge of the power battery in the historical charging data and taking the minimum state of charge of the historical states of charge as the calibration point of the power battery. Optionally, before determining the calibration point of the power battery according to the historical charging data, the method further comprises the steps of identifying a first time when the vehicle exits from charging under the condition of underfilling in the historical charging data, and selecting a minimum state of charge from at least one historical state of charge if the first time is greater than a preset first time threshold. Optionally, determining the calibration state of charge of the power battery according to the calibration voltage value includes obtaining a corresponding relation table of the calibration voltage value and the calibration state of charge, and inquiring the corresponding relation table according to the calibration voltage value to obtain the calibration state of charge of the power battery. Optionally, before correcting the current state of charge displayed by the vehicle to the calibration state of charge, the method further comprises the steps of acquiring the current state of charge if the current voltage value is smaller than the calibration voltage value, and reducing the rising rate of the current state of charge displayed by the vehicle if the current state of charge does not reach the reference state of charge corresponding to the calibration point. Optionally, before correcting the current state of charge displayed by the vehicle to the calibration state of charge, the method further comprises the steps of identifying at least one of a charging mode, a single voltage, a charging current, a current temperature, charging correction data and the current state of charge in the current charging data, determining a voltage threshold and a current threshold according to the current temperature, identifying a second number of times the power battery triggers correction of the current state of charge in a preset duration in the charging correction data, determining whether the power battery meets an underfilling correction condition according to at least one of the charging mode, the single voltage, the charging current, the voltage threshold, the current threshold, the second number of times and the current state of charge, and triggering correction action of the current state of charge displayed by the vehicle when the power battery meets the underfilling correction condition. Optionally, the underfill correction condition comprises at least one of a charging mode being a preset target mode, a monomer voltage being greater than a voltage threshold, a charging current being less than a current threshold, a second number of times being less than or equal to a preset second number of times threshold, and a current state of charge being less than a calibrated state of charge. The e