CN-121978553-A - Energy storage battery monitoring method and device applied to motor home, equipment and medium

CN121978553ACN 121978553 ACN121978553 ACN 121978553ACN-121978553-A

Abstract

The application provides an energy storage battery monitoring method, device, equipment and medium applied to a motor home, belonging to the technical field of vehicle energy storage monitoring, wherein the method comprises the following steps: acquiring total voltage data, current data, temperature data and vehicle vibration amplitude data of an energy storage battery of a motor home, and determining a vehicle working condition type based on the current data and the vehicle vibration amplitude data; and if the vehicle working condition type is a vehicle charging state, accumulating and integrating the current data along with time to obtain an ampere-hour integral accumulated capacity, determining initial residual capacity of the energy storage battery based on the ampere-hour integral accumulated capacity and rated capacity of the energy storage battery, determining a battery electrochemical polarization correction coefficient based on the total voltage data, the temperature data and the vibration amplitude data, and performing electrochemical polarization compensation on the initial residual capacity based on the battery electrochemical polarization correction coefficient to obtain target residual capacity. The method and the device can improve the accuracy of monitoring the state of the energy storage battery of the motor home.

Inventors

WANG PENG
WANG JIANJUN
CUI CHENG
MA HONGYAN
YAN XUN
LIANG SHUANG
WANG YU

Assignees

河北览众专用汽车制造有限公司

Dates

Publication Date: 20260505
Application Date: 20260403

Claims (10)

1. The energy storage battery monitoring method applied to the motor home is characterized by comprising the following steps of: Acquiring total voltage data, current data, temperature data and vehicle vibration amplitude data of an energy storage battery of a motor home, and determining a vehicle working condition type based on the current data and the vehicle vibration amplitude data; And if the vehicle working condition type is a vehicle charging state, accumulating and integrating the current data along with time to obtain an ampere-hour integral accumulated capacity, determining initial residual capacity of the energy storage battery based on the ampere-hour integral accumulated capacity and rated capacity of the energy storage battery, determining a battery electrochemical polarization correction coefficient based on the total voltage data, the temperature data and the vibration amplitude data, and performing electrochemical polarization compensation on the initial residual capacity based on the battery electrochemical polarization correction coefficient to obtain target residual capacity.
2. The method for monitoring an energy storage battery applied to a motor home according to claim 1, further comprising, after the determining a vehicle condition type based on the current data and the vehicle vibration amplitude data: if the vehicle working condition type is a driving charging state, the following steps are performed: Acquiring solar charging data, driving generator charging data and commercial power charging data, and performing smooth filtering processing on the current data based on the solar charging data, the driving generator charging data and the commercial power charging data to obtain stable charging current data; And carrying out open-circuit voltage fitting correction based on the stable charging current data, the temperature data and the total voltage data to obtain target residual electric quantity.
3. The method for monitoring an energy storage battery applied to a motor home according to claim 2, wherein the performing an open circuit voltage fitting correction based on the stable charging current data, the temperature data and the total voltage data to obtain a target remaining power comprises: determining a temperature compensation coefficient based on the temperature data, and correcting an initial voltage electric quantity mapping model based on the temperature compensation coefficient to obtain a target voltage electric quantity mapping model; Performing voltage drop compensation processing on the total voltage data based on the stable charging current data to obtain fitted open circuit voltage data; And calculating the target residual capacity through the target voltage electric quantity mapping model based on the fitted open circuit voltage data.
4. The method for monitoring an energy storage battery applied to a motor home according to claim 1, further comprising, after the determining an initial remaining amount of the energy storage battery based on the ampere-hour integral accumulated capacity and the rated capacity: If the vehicle working condition type is in a parking high-power discharge state, the following steps are carried out: accumulating and integrating the current data along with time to obtain an ampere-hour integral accumulated capacity, and determining the initial residual electric quantity of the energy storage battery based on the ampere-hour integral accumulated capacity and the rated capacity; Acquiring historical standing voltage data and historical high-power intermittent discharge data of an energy storage battery of a motor home in a standing state, and determining battery capacity attenuation reference data based on the historical standing voltage data and the historical high-power intermittent discharge data; Acquiring real-time discharge rate data, and performing capacity compensation processing on the real-time discharge rate data and the temperature data to obtain current available effective capacity data; And correcting the initial residual capacity based on the current available effective capacity data to obtain target residual capacity.
5. The method for monitoring an energy storage battery applied to a motor home according to claim 1, wherein the determining a battery electrochemical polarization correction coefficient based on the total voltage data, the temperature data, and the vibration amplitude data comprises: Determining a voltage polarization coefficient based on the total voltage data; determining a temperature influence coefficient based on the temperature data; determining a vibration disturbance factor based on the vibration amplitude data; and carrying out weighted fusion on the voltage polarization coefficient, the temperature influence coefficient and the vibration disturbance coefficient to obtain a battery electrochemical polarization correction coefficient.
6. The method for monitoring an energy storage battery applied to a motor home according to claim 1, wherein the performing electrochemical polarization compensation on the initial residual electric quantity based on the battery electrochemical polarization correction coefficient to obtain a target residual electric quantity comprises: Performing product operation based on the initial residual electric quantity and the electrochemical polarization correction coefficient of the battery to obtain residual electric quantity data after polarization compensation; and performing amplitude limiting calibration on the residual electric quantity data after polarization compensation to obtain target residual electric quantity.
7. The method for monitoring an energy storage battery applied to a motor home according to claim 1, further comprising: acquiring historical charge-discharge cycle data, historical temperature data and historical available capacity change data of the energy storage battery; Determining a cyclic decay coefficient based on the historical charge-discharge cycle data; Determining a high temperature aging coefficient based on the historical temperature data; Determining a capacity fade rate based on the historical available capacity change data; Performing weighted fusion processing on the cyclic attenuation coefficient, the high-temperature aging coefficient and the capacity attenuation rate to obtain battery health state data; and comparing the battery health state data with a preset health threshold value to obtain battery health early warning information.
8. Be applied to energy storage battery monitoring device of car as a house, characterized by comprising: The working condition identification module is used for acquiring total voltage data, current data, temperature data and vehicle vibration amplitude data of the energy storage battery of the motor home, and determining the type of the working condition of the vehicle based on the current data and the vehicle vibration amplitude data; The first battery monitoring module is used for accumulating and integrating the current data along with time to obtain an ampere-hour integral accumulated capacity if the vehicle working condition type is a driving uncharged state, determining initial residual electric quantity of the energy storage battery based on the ampere-hour integral accumulated capacity and rated capacity of the energy storage battery, determining a battery electrochemical polarization correction coefficient based on the total voltage data, the temperature data and the vibration amplitude data, and performing electrochemical polarization compensation on the initial residual electric quantity based on the battery electrochemical polarization correction coefficient to obtain target residual electric quantity.
9. A computer device comprising a processor and a memory, wherein the memory has stored therein a computer program that is loaded and executed by the processor to implement the energy storage battery monitoring method applied to a motor home as claimed in any one of claims 1 to 7.
10. A computer-readable storage medium, wherein a computer program is stored in the computer-readable storage medium, and the computer program is loaded and executed by a processor to implement the energy storage battery monitoring method applied to a motor home as claimed in any one of claims 1 to 7.

Description

Energy storage battery monitoring method and device applied to motor home, equipment and medium Technical Field The application belongs to the technical field of vehicle energy storage monitoring, and particularly relates to an energy storage battery monitoring method, an energy storage battery monitoring device, energy storage battery monitoring equipment and an energy storage battery monitoring medium applied to a motor home. Background Along with the popularization of travel scenes of living, the motor home becomes an important carrier for long-distance travel and outdoor life, and the energy storage battery is used as a core component for energy supply in the aspect of life functions of the motor home, and the working state of the energy storage battery directly influences the reliability and the use safety of the whole motor home. The working environment of the energy storage battery in the motor home has the characteristics of frequent vibration, large environmental temperature span and the like, and high requirements are put forward on the accuracy and stability of battery state monitoring. The conventional power battery management scheme is adopted by the existing car as a house energy storage battery monitoring system, and residual electric quantity calculation is carried out by combining current integration with fixed parameters, however, in the practical application process, factors such as continuous vibration, environmental change and the like in the driving process can enable electrochemical polarization and concentration polarization to be generated inside the battery, so that obvious drifting of an electric quantity estimation result is caused, the problem that the display electric quantity is inconsistent with the practical available electric quantity is easy to occur, the judgment of a user on the residual electric quantity is affected, and reliable support cannot be provided for battery safe use and service life management. Disclosure of Invention The application provides an energy storage battery monitoring method, device, equipment and medium applied to a motor home, so as to improve the accuracy of monitoring the state of the energy storage battery of the motor home. According to an aspect of the embodiment of the application, there is provided an energy storage battery monitoring method applied to a motor home, including: Acquiring total voltage data, current data, temperature data and vehicle vibration amplitude data of an energy storage battery of the motor home, and determining a vehicle working condition type based on the current data and the vehicle vibration amplitude data; If the vehicle working condition type is a vehicle charging state, accumulating and integrating the current data along with time to obtain ampere-hour integral accumulated capacity, determining initial residual electric quantity of the energy storage battery based on the ampere-hour integral accumulated capacity and rated capacity of the energy storage battery, determining a battery electrochemical polarization correction coefficient based on the total voltage data, the temperature data and the vibration amplitude data, and performing electrochemical polarization compensation on the initial residual electric quantity based on the battery electrochemical polarization correction coefficient to obtain target residual electric quantity. According to an aspect of an embodiment of the present application, there is provided an energy storage battery monitoring device applied to a motor home, including: The working condition identification module is used for acquiring total voltage data, current data, temperature data and vehicle vibration amplitude data of the energy storage battery of the motor home, and determining the type of the working condition of the vehicle based on the current data and the vehicle vibration amplitude data; The first battery monitoring module is used for accumulating and integrating current data along with time to obtain ampere-hour integral accumulated capacity if the vehicle working condition type is a driving uncharged state, determining initial residual electric quantity of the energy storage battery based on the ampere-hour integral accumulated capacity and rated capacity of the energy storage battery, determining a battery electrochemical polarization correction coefficient based on total voltage data, temperature data and vibration amplitude data, and performing electrochemical polarization compensation on the initial residual electric quantity based on the battery electrochemical polarization correction coefficient to obtain target residual electric quantity. According to an aspect of an embodiment of the present application, there is provided a computer device, including a processor and a memory, in which a computer program is stored, the computer program being loaded and executed by the processor to implement the above-mentioned energy storage battery monitoring method applied to a