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Apparatus for changing charging and discharging efficiency according to status of chargeable battery

A battery state and rechargeable battery technology, which is applied in the direction of secondary battery charging/discharging, battery circuit devices, circuit devices, etc., can solve the problems of battery temperature combustion or explosion, change of charging and discharging characteristics, aging, etc., to improve safety and Effects of longevity, safety assurance, and cost reduction

Active Publication Date: 2009-04-01
ACER INC
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  • Abstract
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Problems solved by technology

[0005] However, the IC protection circuit may still be damaged due to various reasons such as poor quality of the product itself, or the micro-overcharge specially designed by some manufacturers, or even omitting the protection circuit to reduce production costs. Excessive temperature may cause combustion or explosion. In recent years, it has also been heard that certain brands of notebook computers or mobile phones have to be fully recycled due to concerns about battery safety.
[0006] In addition, the increase in battery temperature not only causes safety concerns, but also easily changes the activity of various chemical substances inside the battery, and its charge and discharge characteristics will also change accordingly, which will accelerate the aging phenomenon mentioned above.

Method used

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  • Apparatus for changing charging and discharging efficiency according to status of chargeable battery
  • Apparatus for changing charging and discharging efficiency according to status of chargeable battery
  • Apparatus for changing charging and discharging efficiency according to status of chargeable battery

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Embodiment Construction

[0017] The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment with reference to the drawings.

[0018] Referring to FIG. 1 , it is a preferred embodiment of the present invention. The portable module 101 of this embodiment refers to an electronic module with a rechargeable battery 124 , such as a notebook computer, a mobile phone, and a PDA. In this embodiment, the electronic module 101 is used as an example to match a smart battery system (SBS; Smart Battery System) 104 . The aforementioned smart battery system refers to a system that includes a system management bus (SM bus) 134, a charge control unit 144, and a smart battery 124 with a sensing unit 114. Through the system management bus 134, the sensing The signal sent by the unit is transmitted to the control unit 103 which can communicate with the module host, and the control unit generates a c...

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Abstract

The invention discloses a device for changing the charging efficacy or discharging efficiency of a battery according to the condition of the battery. A sensing unit is used in the device for sensing the condition of the chargeable battery and sending out an alarm signal when the condition of the battery meets a preset condition; then a control unit receives the alarm signal and reduce the discharging efficiency of the battery according to the alarm signal; or reduce the charging efficiency of the battery.

Description

technical field [0001] The invention relates to a device for changing the battery charging or discharging efficiency according to the state of the rechargeable battery, so as to improve the safety of the rechargeable battery and prolong the battery life. Background technique [0002] In recent years, rechargeable batteries made of battery cells made of various materials have been widely used in portable electronic modules in various fields because of their small size, light weight and long service life. [0003] However, this kind of rechargeable battery that uses chemical energy to store electrical energy, whether it is in the process of charging or discharging, because it stores energy through the process of converting energy forms, so both processes will be accompanied by the release of heat energy, which is inevitable. Heat energy will inevitably increase the temperature of the rechargeable battery. Therefore, in the process of use, the designer must consider moderately...

Claims

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Application Information

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