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Battery discharge control method and device, medium and program product

A battery discharge and control method technology, applied in battery circuit devices, current collectors, electric vehicles, etc., can solve the problems of the battery not being discharged normally, easily touched to the lower limit protection voltage, etc., so as to reduce the loss voltage and avoid the polarization reaction. Effect

Pending Publication Date: 2022-07-29
ZHUHAI COSMX BATTERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This application provides a battery discharge control method, equipment, media and program products to solve the problem that the battery is easily touched to the lower limit protection voltage during discharge, resulting in the battery not being able to discharge normally

Method used

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  • Battery discharge control method and device, medium and program product
  • Battery discharge control method and device, medium and program product
  • Battery discharge control method and device, medium and program product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] figure 2 This is a flowchart of the battery discharge control method provided by an embodiment of the present application. The execution body of the battery discharge control method provided by the embodiment of the present application may be a battery control system or a server. In this embodiment, the execution body is the battery control system. This battery discharge control method will be described.

[0055] like figure 2 As shown, the battery discharge control method may include the following steps:

[0056] S101: During the process of discharging the battery, periodically collect the working state of the battery.

[0057] In this embodiment, those skilled in the art can flexibly set the collection period of the battery working state according to the actual situation. For example, the collection period may be 10 minutes or 20 minutes, which is not limited here.

[0058] S102: Determine the state change amount of the battery between the working state of the cu...

Embodiment 2

[0078] image 3 This is a flowchart of the battery discharge control method provided by an embodiment of the present application. The execution body of the battery discharge control method provided by the embodiment of the present application may be a battery control system or a server. In this embodiment, the execution body is the battery control system. This battery discharge control method will be described.

[0079] like image 3 As shown, the battery discharge control method may include the following steps:

[0080] S201: Obtain the voltage value and impedance value of the battery in the current collection period.

[0081] In a possible implementation manner, the impedance value of the battery in the current collection period can be calculated by using the following formula (1):

[0082] DCIR 1 =DCIR 2 (1+k) (1)

[0083] Among them, DCIR 1 Indicates the impedance value of the battery in the current acquisition cycle, k represents the impedance growth rate, DCIR 2 In...

Embodiment 3

[0106] In a specific embodiment, the lithium battery on the mobile phone starts to discharge, and the battery control system determines the maximum discharge current of the battery according to the working state of the battery, and controls the discharge of the battery according to the maximum discharge current:

[0107] In the first step, in the process of battery discharge, the battery control system collects the ambient temperature of the battery every 20 minutes. The ambient temperature in the previous acquisition cycle is 8°C, the voltage at the start of discharge is 3.77V, the discharge current is 3600mA, and the discharge current is 3600mA. The voltage after 1s is 3.30V; the ambient temperature in the current acquisition cycle is 0°C, and the voltage at the start of discharge is 3.77V;

[0108] In the second step, the ambient temperature of the battery in the current acquisition cycle is 0°C, and the ambient temperature of the battery in the previous acquisition cycle is...

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Abstract

The invention provides a battery discharge control method and device, a medium and a program product. The method comprises the following steps: periodically collecting the working state of a battery in the discharging process of the battery; determining the state variation between the working state of the battery in the current acquisition period and the working state of the battery in the previous acquisition period; if the state variable quantity is greater than or equal to the preset threshold value, determining the maximum discharge current corresponding to the current acquisition period according to the impedance value of the battery in the current acquisition period; and in the current acquisition period, controlling the battery to discharge by adopting the maximum discharge current. According to the method, the maximum discharge current can be determined according to the impedance value of the battery when the working state of the battery changes greatly, so that the maximum discharge current is adjusted in time, the lower limit protection voltage set by the battery control system is prevented from being triggered when the battery is discharged, and the battery can be discharged normally.

Description

technical field [0001] The present application relates to the field of battery technology, and in particular, to a battery discharge control method, device, medium and program product. Background technique [0002] Lithium-ion batteries are widely used in electronic products, including smartphones, notebook computers, wearable devices, and electric vehicles, due to their high energy density and thinness. [0003] Lithium batteries are prone to aging. In practical applications, as the use time increases, the impedance of the battery gradually increases; in addition, the decrease in the application environment temperature will also cause the impedance of the battery to temporarily increase. Under the premise that the fixed voltage of the battery remains unchanged, the high-power discharge of the battery will lead to an increase in the discharge current. When the battery is aged to a certain extent or is used in a low temperature environment, when the battery is discharged wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
CPCH02J7/0047H02J7/0063H02J7/007182H02J7/007194H02J7/007188H02J7/00304H02J7/00306
Inventor 张文轩郭富荣谭忠钟季方双柱李俊义
Owner ZHUHAI COSMX BATTERY CO LTD