Two-pole overcharge protection circuit and method

An overcharge protection circuit, overcharge protection technology, applied in battery overcharge protection, safety/protection circuits, circuit devices, etc., can solve problems such as emergency power supply damage, emergency power supply overcharge explosion, hazards, etc., to improve service life. and safety effects

Inactive Publication Date: 2017-08-18
宁波古得电子科技有限公司
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Problems solved by technology

[0003] However, the existing automotive emergency power supply rarely pays attention to its maintenance. In the process of repeated charging and use, improper charging of the emerg

Method used

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  • Two-pole overcharge protection circuit and method
  • Two-pole overcharge protection circuit and method
  • Two-pole overcharge protection circuit and method

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[0038] The present invention will be further described below in conjunction with the drawings and embodiments.

[0039] In a preferred embodiment, such as figure 1 As shown, a two-pole overcharge protection circuit is proposed, which is applied to emergency power supplies, such as automobile emergency power supplies; it can include:

[0040] The charging module 10 includes a power input port, which outputs a charging voltage when the power input port is connected to an external power source;

[0041] The first switch module 20 is connected to the charging module 10 to receive the charging voltage output by the charging module 10;

[0042] The battery pack 30 is connected to the first switch module 20;

[0043] The first battery management module 40 is respectively connected to the two poles of each battery in the battery pack 30 and the first switch module 20 for detection. When an undervoltage of any battery is detected and the first switch module 20 receives the charging voltage, the ...

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PUM

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Abstract

The invention belongs to the power and electronics technical field and relates to a two-pole overcharge protection circuit. The two-pole overcharge protection circuit includes a charging module, a first switching module, a storage battery pack and a first battery management module; the first switching module is connected with the charging module to receive a charging voltage outputted by the charging module; the storage battery pack is connected with the first switching module; the first battery management module is connected with and detects the two poles of each storage battery in the storage battery pack and the first switching module; when the first battery management module detects that any one of the storage batteries is in an undervoltage state, and the first switching module receives a charging voltage, the first battery management module switches on the first switching module so as to charge the storage battery pack; and when detecting that any one of the storage batteries is in an overcharged state, the first battery management module switches off the first switching module to stop charging the storage battery pack. The invention also provides a two-pole overcharge protection circuit method which applies the above two-pole overcharge protection circuit. With the two-pole overcharge protection circuit and method of the invention adopted, overcharge protection can be provided for two poles of a storage battery in an emergency power source, and therefore, the service life of the storage battery can be prolonged, and the safety of the storage battery can be improved.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a bipolar overcharge protection circuit and method. Background technique [0002] The emergency power supply has been applied in various fields due to its reliability and other characteristics, especially in the automotive field. When the car battery power is low, the car cannot be started. If you carry a car emergency power supply, you can easily solve this problem. [0003] However, the existing automotive emergency power supply rarely pays attention to its maintenance. In the process of repeated charging and use, improper charging of the emergency power supply may cause damage to the emergency power supply. In severe cases, it may also cause the emergency power supply to overcharge and explode, which is extremely harmful . Contents of the invention [0004] In view of the above problems, the present invention proposes a two-pole overcharge protection circuit, whic...

Claims

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Application Information

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IPC IPC(8): H02J7/00
CPCH02J7/0029H02J7/00302H02J7/0036
Inventor 杨兆林周建荣王俊王世霖王荣江
Owner 宁波古得电子科技有限公司
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