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Battery capacity predicting device and battery capacity predicting method

A technology of battery capacity and prediction method, which is applied in measurement devices, measurement of electrical variables, measurement of electricity, etc., can solve problems such as incorrectness, and achieve the effect of improving accuracy and saving time

Inactive Publication Date: 2013-06-05
NEOTEC SEMICON
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

What's more, if the end user does not perform full charge and discharge frequently, the database content will not be updated. When the battery is used for a period of time and the battery is aging, the battery cell management system can only rely on the coulomb counter to provide The remaining power information will be obviously incorrect

Method used

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  • Battery capacity predicting device and battery capacity predicting method
  • Battery capacity predicting device and battery capacity predicting method
  • Battery capacity predicting device and battery capacity predicting method

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Embodiment Construction

[0033] In order to make the object, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0034] As mentioned in the previous art, no matter the dynamic discharge cut-off voltage method or the open-circuit voltage method in the prior art, it usually has to go through multiple complete charging and discharging processes. And if the end user does not fully charge and discharge the battery, the database will not be updated. Especially after the battery ages, inaccurate predictions are especially serious.

[0035] The present invention provides a battery capacity estimation algorithm, such as figure 1 As shown, a battery capacity estimation device 260 (see also figure 2 ), contai...

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Abstract

The invention discloses a battery capacity predicting device and a battery capacity predicting method. A battery pack is built in or externally connected with the battery capacity predicting device. The battery capacity predicting device comprises a battery capacity algorithm equation. A data base is memorized by means of a microprocessor executing equation and memorized in an overwriting non-volatile memorizer. An open loop voltage meter, a current gain meter and a capacity transformation equation are built in the data base. A predicted battery discharge curve is calculated according to measured load current and battery temperature by means of the battery capacity algorithm equations, and then the data base is amended according to a coulombmeter, the battery discharge curve and battery terminal voltage.

Description

technical field [0001] The invention relates to a battery capacity estimation algorithm, in particular to an algorithm for estimating the battery capacity based on the surface temperature of the battery and the current power consumption of the battery. Background technique [0002] Batteries can be said to be the source of power for all portable electronic devices, for example: mobile phones, notebook computers, personal digital assistants, walkmans, etc., all rely on batteries to provide power. But after all, the battery is only a device for storing electricity, and the electric energy of the battery is consumed when the portable electronic device is used. When the portable electronic device is turned on for use, the battery power will continue to be consumed until the portable electronic device is turned off or when the remaining power is not enough to drive the device, the portable electronic device will be forcibly turned off. The latter means that the power stored in t...

Claims

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Application Information

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IPC IPC(8): G01R31/36
Inventor 邓国良
Owner NEOTEC SEMICON
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