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System for charge and discharge of battery pack

A battery pack and current control circuit technology, which is applied in battery circuit devices, secondary batteries, circuits, etc., can solve the problems of reducing the accuracy of module current values ​​and achieve high current accuracy

Inactive Publication Date: 2012-08-22
SAMSUNG SDI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Therefore, when there is an error in the sensed current value from a particular module, it degrades the accuracy of the overall current value for all modules

Method used

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  • System for charge and discharge of battery pack
  • System for charge and discharge of battery pack

Examples

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Embodiment Construction

[0021] Hereinafter, examples of embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily understand and use the examples of embodiments of the present invention.

[0022] A charging and discharging system of a battery pack according to an embodiment of the present invention will now be described in detail.

[0023] figure 1 is a block diagram of a charging and discharging system 100 for a battery pack according to an embodiment of the present invention.

[0024] refer to figure 1 , the charging and discharging system 100 according to the embodiment of the present invention includes a current generation circuit unit 110, a power transmission unit 120, a first current sensing circuit unit 130, a second current sensing circuit unit 140, a current control circuit unit 150 and a data processing Unit 160.

[0025] The current generating circuit unit 110 may receive power output from th...

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Abstract

The invention provides a system for charging and discharge of a battery pack. The charge and discharge system comprises a current generating circuit unit having multiple current generating circuits for receiving power and generating currents; a power transmission unit distributing power input during a charging process, transmitting the distributed power to the multiple current generating circuits and transmitting currents supplied to the mulitple current generating circuits during a discharging process to a power supply unit; a first current sensing circuit unit sensing currents output from the multiple current generating circuits; a second current sensing circuit unit sensing the total currents outputs by the current generating circuit unit; a current control circuit unit comparing the current sensed by the first current sensing circuit unit and the current sensed by the second current sensing circuit unit and controlling each current generating circuit so as to keep a current balance among the current generating circuits.

Description

[0001] This application claims priority and benefit from Korean Patent Application No. 10-2011-0014661 filed on February 18, 2011, the entire contents of which are hereby incorporated by reference. technical field [0002] Embodiments of the present invention relate to a charging and discharging system for a battery pack. Background technique [0003] As the specifications required for secondary batteries become stricter, the specifications required for the output current of charging and discharging devices for manufacturing and testing secondary batteries become correspondingly stricter. Currently, charging and discharging devices capable of generating a maximum current of about several hundred amperes (A) are being developed and manufactured. It is expected that the standard of the specification required for the output current of the charging and discharging device will be higher in the future. In order to meet the specifications required for the output current, it is nec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
CPCY02E60/10H01M10/441H01M2010/4271H02J7/00718
Inventor 表永学徐尚铁柳昌锡瑟尔圭·瓦斯彻夫南镇元
Owner SAMSUNG SDI CO LTD
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