CN203312868U - 一种新型锂电池低电压起充保护电路 - Google Patents
一种新型锂电池低电压起充保护电路 Download PDFInfo
- Publication number
- CN203312868U CN203312868U CN2013203478783U CN201320347878U CN203312868U CN 203312868 U CN203312868 U CN 203312868U CN 2013203478783 U CN2013203478783 U CN 2013203478783U CN 201320347878 U CN201320347878 U CN 201320347878U CN 203312868 U CN203312868 U CN 203312868U
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- lithium battery
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- battery monomer
- voltage
- protection circuit
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N lithium Chemical compound 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[Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 62
- 239000000178 monomer Substances 0.000 claims description 32
- 239000004065 semiconductor Substances 0.000 claims description 14
- 230000001681 protective Effects 0.000 claims description 11
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- 238000000034 method Methods 0.000 description 5
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound 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Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
本实用新型要解决的问题是提供一种新型锂电池低电压起充保护电路，包括由多个锂电池单体组成的电池组，每个所述锂电池单体上连接一个电子开关，由锂电池单体正负极之间的电压值控制锂电池单体是否输出；所述电子开关为三极管，三极管的基极接锂电池单体的负极，三极管的发射极接锂电池单体的正极，三极管的集电极接输出单元。本实用新型的有益效果在于：由于采用上述技术方案，保证在锂电池电压大于或等于充电电压的临介点时对其充电，就能良好解决上述问题，使其即能恢复性能，又不会出现安全隐患。
Description
一种新型锂电池低电压起充保护电路
技术领域
[0001 ] 本实用新型涉及锂电池充放电保护技术领域，尤其涉及一种新型锂电池低电压起充保护电路。
背景技术
[0002] 锂电池在正常使用过程中，其内部发生电能与化学能相互转化的化学正反应。当在某些条件下，如果对其过充电、过放电或过电流将会导致电池内部发生化学副反应，该副反应发生后，会严重影响电池的性能与使用寿命，并可能产生大量气体，使电池内部压力迅速增大后爆炸而导致安全问题。因此，所有的锂电池都安装有一个保护电路，用于对电池的充、放电进行有效的监测，并在某些条件下关断充、放电回路以防止电池发生损害。
[0003] 在现有技术中，即使如此，在实际使用过程当中，当保护板判断放电回路时，还是会有一部分电池因为各方面的原因(如本身的性能原因和保护电路的原因)造成锂电池放电量增大，以至于锂电池的电压接近于0V。现有的两种处理方法有:1、电池保护板会认为此电池已经作废，使其不能再进行充放循环；2、任由充电器对其充电，在这种情况下，由于锂电池的特殊结构，当电池电压等OV时，电池内部铜片会熔化，如继续对其充电，会造成安全隐患。
实用新型内容
[0004] 针对上述问题，本实用新型要解决的问题是提供一种新型锂电池低电压起充保护电路。
[0005] 本实用新型的技术方案如下:
[0006] 一种新型锂电池低电压起充方法，包括如下步骤:
[0007] I)为锂电池单体设定充电电压的临介点；
[0008] 2)放电过程中，保护板检测锂电池单体的输出信号；
[0009] 3)根据输出信号与否，对充电器是否进行充电作出判断。
[0010] 所述步骤2中，当锂电池单体的电压小于充电电压的临介点时，锂电池单体停止输出信号。
[0011 ] 一种新型锂电池低电压起充保护电路，包括由多个锂电池单体组成的电池组，每个所述锂电池单体上连接一个电子开关，由锂电池单体正负极之间的电压值控制锂电池单体是否输出。
[0012] 进一步的，所述电子开关为三极管，三极管的基极接锂电池单体的负极，三极管的发射极接锂电池单体的正极，三极管的集电极接输出单元。
[0013] 进一步的，所述电子开关为MOS管，MOS管的栅极接锂电池单体的负极，MOS管的源极接锂电池单体的正极，MOS管的漏极接输出单元。
[0014] 本实用新型的有益效果在于:由于采用上述技术方案，保证在锂电池电压大于或等于充电电压的临介点时对其充电，就能良好解决上述问题，使其即能恢复性能，又不会出 现安全隐患。
附图说明，
[0015] 图1为本实用新型电路的原理图。
具体实施方式
[0016] 下面结合附图对本实用新型的一种优选的具体实施方式做出简要说明。
[0017] 如图1所示:
[0018] 一种新型锂电池低电压起充方法，包括如下步骤:
[0019] I)为锂电池单体设定充电电压的临介点；
[0020] 2)放电过程中，保护板检测锂电池单体的输出信号；
[0021] 3)根据输出信号与否，对充电器是否进行充电作出判断。
[0022] 所述步骤2中，当锂电池单体的电压小于充电电压的临介点时，锂电池单体停止输出信号。
[0023] 如图1所示，一种新型锂电池低电压起充保护电路，包括由多个锂电池单体组成的电池组，每个所述锂电池单体上连接一个电子开关，所述电子开关为三极管Q1，三极管Ql的基极接锂电池单体的负极，三极管Ql的发射极接锂电池单体的正极，三极管Ql的集电极接输出单兀。
[0024] 当锂电池单体的正负极之间的电压小于三极管Ql的导通电压时，三极管Ql的集电极输出信号O。
[0025] 其中，电子开关的另一种实施方式为为MOS管，MOS管的栅极接锂电池单体的负极，MOS管的源极接锂电池单体的正极，MOS管的漏极接输出单元。
[0026] 当锂电池单体的正负极之间的电压小于MOS管栅极和源极之间的导通电压时，MOS管的源极和漏极断开,输出信号O。
[0027] 以上对本实用新型的一个实施例进行了详细说明，但所述内容仅为本实用新型的较佳实施例，不能被认为用于限定本实用新型的实施范围。凡依本实用新型申请范围所作的均等变化与改进等，均应仍归属于本实用新型的专利涵盖范围之内。
Claims (3)
1.一种新型锂电池低电压起充保护电路，包括由多个锂电池单体组成的电池组，其特征在于:每个所述锂电池单体上连接一个电子开关，由锂电池单体正负极之间的电压值控制锂电池单体是否输出。
2.根据权利要求1所述的新型锂电池低电压起充保护电路，其特征在于:所述电子开关为三极管，三极管的基极接锂电池单体的负极，三极管的发射极接锂电池单体的正极，三极管的集电极接输出单元。
3.根据权利要求1所述的新型锂电池低电压起充保护电路，其特征在于:所述电子开关为MOS管，MOS管的栅极接锂电池单体的负极，MOS管的源极接锂电池单体的正极，MOS管的漏极接输出单元。
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