Storage battery charging and discharging protection system

A protection system and discharge protection technology, applied in battery over-discharge protection, battery overcharge protection, battery overvoltage protection, etc., can solve problems such as short circuit, battery thermal runaway, and battery life shortening

CN113078712APending Publication Date: 2021-07-06GUANGZHOU AEBELL ELECTRICAL TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-07-06

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Abstract

The invention discloses a storage battery charging and discharging protection system which comprises a transformer, a rectifier filter, a charging circuit, a discharging circuit, a charging protection circuit and a discharging protection circuit. The transformer is connected with alternating current and is connected with the charging circuit and the discharging circuit through the rectifier filter. The charging circuit and the discharging circuit are connected with the battery and the load. The charging protection circuit monitors the charging condition of the battery and cuts off a battery charging loop when the battery is charged to a full-charge peak voltage; the discharge protection circuit monitors the power supply voltage, the undervoltage voltage and the starting voltage of the battery when the external power supply supplies power to the battery, compares the power supply voltage, the undervoltage voltage and the starting voltage, and controls the power supply state of the external power supply to the battery and the load and the power supply state of the battery and the load when the external power supply does not exist. Power supply and discharge loops of the battery can be cut off in time, the battery can be effectively protected, the service life of the battery is prolonged, and the safety problem of battery use is reduced.
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Description

technical field

[0001] The invention relates to the technical field of battery charging and discharging, in particular to a battery charging and discharging protection system. Background technique

[0002] Batteries play an important role in the field of electronic technology, and the use safety of batteries is the focus of attention. At present, due to long-term irregular use of most batteries, the battery life is shortened, resulting in problems of thermal runaway, breakdown, and short circuit inside the battery.

[0003] Therefore, it is necessary to propose a storage battery charge and discharge protection system to solve the above problems. Contents of the invention

[0004] In order to overcome at least one defect (deficiency) of the above-mentioned prior art, the present invention provides a storage battery charging and discharging protection system, which monitors the charging and discharging conditions of the battery, and can cut off the power supply circuit of t...

Examples

Embodiment

[0045] Such as figure 1 As shown, in the battery charge and discharge protection system disclosed in the present invention, when an external power supply is used for power supply, the input AC current of the transformer is rectified by a rectifier filter and sent to the charging circuit to connect with the battery for charging the battery, and also connected to the discharge circuit The connection is used to power the load to drive it to work. During the process of charging the battery and supplying power to the load, the charging protection circuit monitors the charging status of the battery in real time and cuts off the charging circuit when the battery is fully charged.

[0046] When there is no external power supply powered by the battery, the battery is connected to the discharge circuit to supply power to the load. During the battery power supply process, the discharge protection circuit monitors the internal voltage of the battery in real time and when the battery disch...