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Method, device and equipment for determining remaining capacity of battery and storage medium

A technology for determining the remaining power of a battery, applied in the field of computers, can solve the problems of half-way power failure, power-deficient storage, low SOC accuracy, etc., and achieves the effect of improving accuracy and accurate remaining power

Pending Publication Date: 2021-10-08
JIANGSU XIAONIU ELECTRIC SCOOTER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, many electric vehicles on the market use lead-acid batteries. At this stage, the determination of the state of charge (SOC) of the lead-acid battery is usually based on the instrument directly collecting the battery voltage to display the SOC in intervals, resulting in low accuracy of the determined SOC and in During the ride, it fluctuates back and forth, and often runs out of power, and there will be a situation of no power halfway
In addition, when the actual remaining power cannot be known, it is easy to cause power loss storage and affect the service life of the battery
[0004] There is currently no better way to determine the remaining battery power

Method used

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  • Method, device and equipment for determining remaining capacity of battery and storage medium
  • Method, device and equipment for determining remaining capacity of battery and storage medium
  • Method, device and equipment for determining remaining capacity of battery and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] figure 1 It is a flowchart of a method for determining the remaining battery power provided by Embodiment 1 of the present invention. This embodiment is applicable to the situation of determining the remaining power of a vehicle (mainly an electric vehicle). The method for determining the remaining battery power provided in this embodiment can be executed by the device for determining the remaining battery power provided in the embodiment of the present invention, which can be implemented by software and / or hardware, and integrated in the electronic device that executes the method , where the electronic device may be a motor controller in an electric vehicle, or other electronic devices. The electric vehicle in the embodiment of the present invention may be a two-wheeled electric vehicle.

[0029] see figure 1 , the method of this embodiment includes but not limited to the following steps:

[0030] S110. Determine the initial SOC of the battery according to the OCV c...

Embodiment 2

[0058] figure 2 It is a flow chart of a method for determining the remaining battery power provided by Embodiment 2 of the present invention. The embodiments of the present invention are optimized on the basis of the foregoing embodiments. Optionally, this embodiment optimizes the process of determining the current SOC of the battery and correcting the current SOC.

[0059] see figure 2 , the method of this embodiment includes but not limited to the following steps:

[0060] S2001. Determine the initial SOC of the battery according to the OCV curve corresponding to the battery in the vehicle and the initial voltage of the battery.

[0061] S2002. Determine whether the battery is in a discharge state.

[0062] The state of the battery can be detected by the relevant controller in the vehicle, so as to determine whether the battery is in a charging state or a discharging state.

[0063] If yes, execute S2005; if not, execute S2003-S2004.

[0064] S2003. Determine the cur...

Embodiment 3

[0090] image 3 A schematic structural diagram of a device for determining the remaining battery power provided by Embodiment 3 of the present invention, as shown in image 3 As shown, the device may include:

[0091] The initial power determination module 310 is configured to determine the initial remaining power SOC of the battery according to the open circuit voltage OCV curve corresponding to the battery in the vehicle and the initial voltage of the battery;

[0092] The current power determining module 320 is configured to determine the current SOC of the battery based on the initial SOC and the ampere-hour integration method when it is detected that the battery is in a discharge state;

[0093] A correction module 330, configured to, when the collected discharge current exceeds the preset current threshold, according to the difference between the current SOC and the first SOC corresponding to the current voltage of the battery in the discharge SOC curve corresponding to...

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Abstract

The embodiment of the invention discloses a method and device for determining the remaining capacity of a battery, equipment and a storage medium. The method comprises the following steps: according to an open circuit voltage (OCV) curve corresponding to a battery in a vehicle and an initial voltage of the battery, determining an initial residual electric quantity SOC of the battery; when it is detected that the battery is in the discharging state, determining the current SOC of the battery based on the initial SOC and an ampere-hour integral method; when the collected discharge current exceeds a preset current threshold value, correcting the current SOC according to a difference value between the current SOC and a first SOC corresponding to the current voltage of the battery in a discharge SOC curve corresponding to the battery to obtain a corrected SOC; and displaying the corrected SOC through an instrument in the vehicle. According to the technical scheme provided by the embodiment of the invention, the current remaining capacity is corrected, so that the determined remaining capacity of the battery in the vehicle is more accurate, and the precision of the remaining capacity is improved.

Description

technical field [0001] The embodiments of the present invention relate to the field of computer technology, and in particular, to a method, device, device, and storage medium for determining the remaining battery power. Background technique [0002] Because electric vehicles conform to today's energy-saving and environmental protection trends, and are convenient for short-distance transportation, can save energy and protect the environment, electric vehicles have been widely used. During the use of the electric vehicle, it is very necessary to display the remaining power of the electric vehicle in time. [0003] At present, many electric vehicles on the market use lead-acid batteries. At this stage, the determination of the state of charge (SOC) of the lead-acid battery is usually based on the instrument directly collecting the battery voltage to display the SOC in intervals, resulting in low accuracy of the determined SOC and in During the riding process, it fluctuates bac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36
CPCG01R31/36
Inventor 胡依林司马惠泉葛石根王润
Owner JIANGSU XIAONIU ELECTRIC SCOOTER TECH CO LTD
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