CN109286230A - 蓄电池充电保护电路 - Google Patents

蓄电池充电保护电路 Download PDF

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Publication number
CN109286230A
CN109286230A CN201811540043.3A CN201811540043A CN109286230A CN 109286230 A CN109286230 A CN 109286230A CN 201811540043 A CN201811540043 A CN 201811540043A CN 109286230 A CN109286230 A CN 109286230A
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CN
China
Prior art keywords
battery
charging
voltage
circuit
single battery
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
CN201811540043.3A
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English (en)
Inventor
卢军
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Lu Xingcai
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Lu Xingcai
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Publication date
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Priority to CN201811540043.3A priority Critical patent/CN109286230A/zh
Publication of CN109286230A publication Critical patent/CN109286230A/zh
Withdrawn legal-status Critical Current

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Classifications

    • H02J7/0086—
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
    • H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
    • H02H5/047—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature using a temperature responsive switch
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
    • H02J7/0091—
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00302—Overcharge protection
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

本发明是一种蓄电池充电保护电路，针对蓄电池组串联充电中的单体电池进行过充过温保护，根据所用电池标准充电电压，饱和浮充电压，对单体电池采用电压检测，当充电电压达到电池饱和电压时，打开电流分路分摊充电电流，使得单体电池充电电压维持在浮充电压,不会再升高,从而保护电池不会被过充电，同时对电池进行温度检测，当超过电池安全温度后，断开电池电路并以声音报警，以达到安全充电的目的。

Description

蓄电池充电保护电路
技术领域
本发明为一种蓄电池充电保护电路，对蓄电池组串联充电中的单体电池进行过充过温保护。
背景技术
蓄电池充电器发展成熟，同样保护电路种类很多，但都是针对单体蓄电池充电，其保护电路在充电到达饱和电压后，以减小充电电流和切断充电线路为主。
但电动自行车是蓄电池组串联充电方式， 如附图3，由于单体蓄电池质量及使用上差异，单体电池电压都在不均衡状态，往往当一个电池充电饱和后，别的电池还没有充至饱和，更甚至在低电状态，这时必须继续充电，但这样就会导致已达饱和电压的电池被大量过充电，从而大量发热缩短电池寿命，甚至引起电动车自燃事故。
所以在不能改变电池组串联充电方式下，开发一种能保护单体电池不过充不过温的电路，是防止电动车在充电中起火的必要和有效手段。
发明内容
本发明电路应用于串联蓄电池组，但保护功能却针对和应用于单体电池，只要有两个电池以上串联俱可应用，附图中四个电池仅为示意，黑色箭头表示充电电流回路方向，由正极向负极。
本发明具体的电路不再描述，因为用不同的元器件及芯片，或不同的线路方式，都能达到该功能，但不论采用何种电路，只要采用本电路模块思路，并使用于本发明所述功用，都属于侵仅之例。
本发明保护电路主要有电压检测，充电分流，温度检测，断电功能构成，在电池正常状态下，仅仅有电压检测工作，其工作电流远小于电池本身自放电可微乎不计。
蓄电池组充电状态中，当某电池被充电达到饱和电压时，电压检测就会激活充电分流电路，该电路一旦导通，就会分担部分充电电流，并且将该电池电压维持在饱和浮充状态，不会被过分充电而发热，而其余没有达到饱和电压的电池，能继续以正常电流充电直至进入饱和浮充状态。
电路的过温断电功能， 采用合适的温控开关串联接入继电器线圈，再将电池供电回路增加断点，并将该断点串入继电器闭合点，一旦温控开关检测高温，由常开进入常闭状态，就接通继电器，继电器闭合点变为开路点，电池回路主线断开，保证高温断电功能。
附图说明
图1；保护模块结构功能示意图。
图2；保护模块在电池组中接线示意图。
图3；没有保护模块的电池组原充电方式接线示意图。
图例； 1，蓄电池 2，220V转DC充电器 3，充电保护模块 4，继电器常闭触点5，温控开关模块 6，继电器模块 7，电压检测模块 8，电流分流模块。
具体实施方式
本模块接线简单，无需改动充电器等，只需在安装电池时，分清正负并联接于原电池，就是不过充保护功能，再将电池回路，增加断点并串入继电器常闭点。

Claims (2)

1.一种蓄电池充电保护电路，对蓄电池组串联充电中的单体电池进行过充过温保护，根据所用电池标准充电电压，饱和浮充电压，对单体电池采用电压检测，当充电电压达到电池饱和电压时，打开电流分路分摊充电电流，使得单体电池充电电压维持在浮充电压不会再升高从而保护电池不会被过充电，同时对电池进行温度检测，当超过电池安全温度后，断开电池电路并以声音报警，以达到安全充电的目的。
2.根据权利要求1所述的单体电池保护电路，电流分流电路启动时有散热风扇共同启动。
CN201811540043.3A 2018-12-18 2018-12-18 蓄电池充电保护电路 Withdrawn CN109286230A (zh)

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CN201811540043.3A CN109286230A (zh) 2018-12-18 2018-12-18 蓄电池充电保护电路

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112202219A (zh) * 2020-09-21 2021-01-08 重庆蓝岸通讯技术有限公司 对讲机大容量电池充电装置及充电方法
CN113787915A (zh) * 2021-08-24 2021-12-14 上海奥威科技开发有限公司 一种超温预警和主动安全控制***装置及控制方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112202219A (zh) * 2020-09-21 2021-01-08 重庆蓝岸通讯技术有限公司 对讲机大容量电池充电装置及充电方法
CN113787915A (zh) * 2021-08-24 2021-12-14 上海奥威科技开发有限公司 一种超温预警和主动安全控制***装置及控制方法
WO2023024860A1 (zh) * 2021-08-24 2023-03-02 上海奥威科技开发有限公司 一种超温预警和主动安全控制***装置及控制方法

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