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Cell open-circuit voltage compensation system and cell open-circuit voltage compensation method

An open-circuit voltage, compensation system technology, applied in the direction of measuring current/voltage, control/regulation system, measuring electricity, etc., can solve the problem of battery percentage fluctuation, not considering the battery internal resistance voltage difference, etc., to achieve the effect of accurate battery percentage

Inactive Publication Date: 2014-02-12
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] according to Figure 4 According to the data in , it can be seen that the voltage difference between 50% and 20% power is less than 0.2V. Due to the internal resistance of the battery, the voltage difference between the electronic device connected to the charger and the charger unplugged may reach 0.2V. V, and in the past, when calculating the battery percentage, the voltage difference caused by the internal resistance of the battery was not considered, but the charging voltage or discharging voltage was directly used as the open circuit voltage of the battery. In this way, after the electronic device is connected to the charger, Severe fluctuations in battery percentage when unplugging the charger

Method used

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  • Cell open-circuit voltage compensation system and cell open-circuit voltage compensation method
  • Cell open-circuit voltage compensation system and cell open-circuit voltage compensation method
  • Cell open-circuit voltage compensation system and cell open-circuit voltage compensation method

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Embodiment Construction

[0017] refer to figure 1 Shown is an application environment diagram of a preferred embodiment of the battery open-circuit voltage compensation system of the present invention. The battery open-circuit voltage compensation system 10 operates in an electronic device 1 , and the electronic device 1 includes a battery 12 . When the battery 12 of the electronic device 1 needs to be charged, the electronic device 1 is connected to the charger 2 and the charging power source 3 . The electronic device 1 may be an electronic device with a built-in battery, such as a mobile phone, a personal digital assistant, a tablet computer, or a personal computer. In this preferred embodiment, the electronic device 1 is a mobile phone.

[0018] Such as figure 2 Shown is a functional block diagram of a preferred embodiment of the battery open-circuit voltage compensation system of the present invention. The battery open circuit voltage compensation system 10 includes a judging module 100 , a ...

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Abstract

An electronic device being used to calculate an open circuit voltage of a battery built in the electronic device. The electronic device reads a charging voltage and a charging current, a discharging voltage and a discharging current. The electronic device calculates the open circuit voltage of the battery according to the charging voltage, the charging current and the resistance if the battery is charging. The electronic device calculates the open circuit voltage of the battery according to the discharging voltage, the discharging current and the resistance if the battery is discharging.

Description

technical field [0001] The invention relates to a voltage compensation system and method, in particular to a battery open-circuit voltage compensation system and method. Background technique [0002] Nowadays, there are many kinds of electronic devices (such as mobile phones, notebook computers, tablet computers, etc.), and lithium batteries are also widely used in these products. In the process of developing electronic devices, the R&D personnel obtain the relationship data table of the battery open circuit voltage and the percentage of power according to the battery design instructions provided by the battery supplier, such as Figure 4 shown. However, in some cases, when the charger is connected, the battery level of the electronic device changes from 20% to 50% immediately, and when the charger is unplugged, the battery percentage of the electronic device changes from 50% immediately. to 20%, which will affect the user experience and cause distress to users. The specif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36G01R19/00G05F1/565
CPCG01R31/3624G01R31/3842
Inventor 党德华
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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