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Battery management system and switching method thereof

A technology for battery management systems and battery packs, applied in electrical signal transmission systems, signal transmission systems, battery overcurrent protection, etc., can solve problems such as relay melting, and achieve the effect of preventing arcs and spikes and preventing melting

Active Publication Date: 2014-09-10
SAMSUNG SDI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the relay is turned off (open) while current is flowing through it, the relay may be subjected to severe stress, specifically, the relay may melt due to arcing and voltage spikes in the relay

Method used

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  • Battery management system and switching method thereof
  • Battery management system and switching method thereof
  • Battery management system and switching method thereof

Examples

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Embodiment Construction

[0040] Hereinafter, examples of embodiments of the present invention will be described in more detail with reference to the accompanying drawings so that they can be easily manufactured and used by those of ordinary skill in the art.

[0041] Example embodiments are described more fully hereinafter with reference to the accompanying drawings, however, these embodiments may be embodied in different forms and should not be construed as limited to only the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough, and will fully convey the scope of the disclosure to those skilled in the art.

[0042] Also, in the drawing figures, the size of layers and regions may be exaggerated for clarity of illustration. In the drawings, like reference numerals refer to like elements throughout. As used herein, the word "and / or" includes any and all combinations of one or more of the associated listed items.

[0043] The terminology used he...

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PUM

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Abstract

An embodiment of the present invention provides a battery management system and a switching method thereof, which can prevent fusion of a relay by preventing arcing and voltage spikes when the relay is turned off (opened). To this end, the embodiment of the present invention provides a battery management system including one or more battery packs; a master battery management unit sensing voltages and / or currents of the battery packs; main relays connected between the battery packs and loads and turned on or off by the master battery management unit; and sub relays connected to the main relays in parallel, turned on or off by the master battery management unit and having resistors, wherein when switching occurs in which the main relays are turned off, the sub relays are first turned on and the main relays are then turned off.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to and benefit of U.S. Provisional Application No. 61 / 774,374, filed March 7, 2013, in the United States Patent and Trademark Office, the entire contents of which are hereby incorporated by reference. technical field [0003] Aspects of various embodiments relate to battery management systems and switching methods thereof. Background technique [0004] Vehicles using internal combustion engines that use gasoline or diesel as vehicle fuel emit harmful exhaust gases that are considered to be one of the main causes of air pollution. Therefore, in recent years, efforts to develop electric vehicles and hybrid vehicles have been actively pursued in order to reduce environmental pollution. [0005] An electric vehicle has an electric motor driven by a battery pack including a plurality of rechargeable secondary battery cells. Since an electric vehicle uses a battery pack as the main power so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/42
CPCB60R16/03Y10T307/76B60L11/1864Y02T10/7061Y02T10/7011B63H21/00B60L3/0046Y02T10/7005B60L58/21H02J7/00304B60L3/04H02H9/001B60L50/51B60L58/18H02J7/0014Y02T10/70H02J7/0029B60Y2200/91B60Y2200/92
Inventor 梁鹤哲李恩罗
Owner SAMSUNG SDI CO LTD
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