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Method and device for charging battery

A battery charging and battery voltage technology, applied in battery circuit devices, circuit devices, secondary battery charging/discharging, etc., can solve problems such as user inconvenience, battery charging time prolongation, and battery failure to reach battery capacity

Active Publication Date: 2010-01-20
ACER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under such a specification, because the temperature of the battery is higher than the first specification temperature threshold when charging is stopped, the battery cannot reach the battery capacity with a rated charging voltage of 4.2V, and the charging time of the battery is also prolonged, causing inconvenience to the user.

Method used

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  • Method and device for charging battery
  • Method and device for charging battery

Examples

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Embodiment Construction

[0013] The battery charging method and device thereof according to preferred embodiments of the present invention will be described below with reference to the accompanying drawings. For ease of understanding, in the following embodiments, the same components are denoted by the same reference numerals.

[0014] refer to figure 2 , figure 2 A block diagram of an embodiment of a battery charging device of an embodiment of the present invention is shown. In the figure, the battery charging device 20 can be used for a rechargeable battery with a smart chip. The battery includes a battery module 27 with a plurality of battery cores 271, wherein the smart chip includes a temperature detection module 25 and a voltage detection module 26 for detecting the temperature and voltage of the battery cores respectively. The charging device 20 includes a charging module 21 and a control module 22, the charging module 21 is used to input charging current to the battery core 271 for chargin...

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Abstract

The invention discloses a method and a device for charging a battery. The method comprises the following steps: when a battery module is charged with constant current or constant voltage, detecting the temperature of each buttery cell in the battery module; when the temperature of any one of the battery cells is over a threshold, reducing the charging current, wherein the threshold is not higher than the critical temperature requiring charging voltage reduction prescriptive in a safety specification; and after a period of time, judging whether the temperature of the buttery has a downtrend, if the temperature of the battery has a downtrend, maintaining the charging current, and if the temperature of the battery has no downtrend, reducing the charging current continuously. According to the steps, the battery can be charged under the condition of taking account of security consideration and no loss of battery capacity.

Description

technical field [0001] The invention relates to a battery charging method and its device, in particular to a battery charging method and its device for adjusting the charging current according to the temperature of the battery core. Background technique [0002] With the development of science and technology, batteries have become an indispensable power source for portable electronic devices, such as MP3 players, mobile phones, and notebook computers, all of which use batteries as the main power source. Therefore, various charging methods have been proposed one after another. , such as Constant Trickle Current Charge, Constant Current Charge, Constant Current Constant Voltage Charge and two-stage charging. [0003] However, when using the aforementioned various known charging methods to charge the battery module, in order to ensure that the battery is fully charged and shorten the charging time, a charging voltage exceeding the rated voltage is often applied to the battery m...

Claims

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Application Information

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IPC IPC(8): H01M10/44H02J7/00
CPCY02E60/12Y02E60/10
Inventor 阮冠旗
Owner ACER INC
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