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Change-discharge control cirucit and charging type supply unit

一种充放电控制、开关控制电路的技术，应用在蓄电池保护电路,充电型电源装置,充放电控制电路领域

Inactive Publication Date: 2009-01-07
SII SEMICONDUCTOR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it took too much time to mass produce the control circuit, so it became a serious problem in terms of test cost

Method used

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  • Change-discharge control cirucit and charging type supply unit
  • Change-discharge control cirucit and charging type supply unit
  • Change-discharge control cirucit and charging type supply unit

Examples

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Embodiment Construction

[0032] An embodiment of the present invention will be described in detail below with reference to the accompanying drawings. figure 1 is a circuit diagram, partly a block diagram, for explaining an embodiment of the present invention. In the figure, reference numeral 101 denotes an overcharge, overdischarge, and overcurrent detection circuit. Reference numeral 102 denotes an oscillation circuit having a clock cycle Tclk. Reference numeral 103 denotes a counter. In addition, reference numeral 104 denotes a charge and discharge control unit. Due to the control unit 104, the on / off function can be realized, through the output terminal COP for charge control and the output terminal DOP for discharge control, the charge and discharge control switch installed in the charge and discharge path between the storage battery and The main body of the mobile device thus protects the storage battery, based on the battery status, charging, discharging current, etc., which can be obtained f...

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PUM

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Abstract

The invention provides: a charging and discharging control circuit which includes a charging and discharging control terminal having a test function as well and which is capable of conducting switch over among a normal application state, a charging and discharging prohibition state, and a test state; and a charging type power supply unit. Any one of a level 'L', 'H', or 'M' of a voltage inputted to a charging and discharging control terminal is selected using the charging and discharging control terminal and a test fuse to allow switch over to the normal application state, the charging and discharging prohibition state, or the test state. In the test state, two modes for shortening a test delay time are realized depending on whether or not the test fuse is cut.

Description

technical field [0001] The present invention generally relates to a charge-discharge control circuit having a terminal for charge-discharge control and a charge-type power supply device. In particular, the present invention relates to a charge and discharge control circuit, wherein the charge and discharge control terminal also has a test function, so that an external output terminal has both the charge and discharge control function and the test function, and relates to a charge-type power supply device. [0002] The present invention relates to a battery protection circuit having both a charge and discharge control function and a test function, and a mass production technique for reducing test time for a charge-type power supply unit in which the battery protection circuit is included. Background technique [0003] Lithium-ion batteries are characterized by their small size, light weight, and high capacity. Such lithium ion secondary batteries are used in mobile equipment...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H01M10/44
CPCH02J7/0029Y02E60/10H02J7/00306H01M10/44
Inventor 张炜
Owner SII SEMICONDUCTOR CORP