Protector for prolonging lives of vehicle batteries

Abstract

The invention relates to a protector for prolonging lives of vehicle batteries, comprising a voltage comparison circuit, a bistable circuit, a signal amplification circuit, an executive circuit and a diode (D). The protector is characterized in that the executive circuit is used as a battery charge control switch; make-break of the executive circuit is controlled by the voltage comparison circuit according to the charging states of the batteries, wherein the executive circuit is connected between a vehicle charging circuit and a battery anode in series by (3) and (4); the input end (7) of the voltage comparison circuit is connected to the battery anode by the diode (D) and the output end (8) thereof is connected to the input end (6) of the executive circuit by the bistable circuit and the signal amplification circuit; and the input end (9) of the voltage comparison circuit is also connected with a high / low voltage setting circuit. The protector is simple in structure, low in cost and simple and convenient in installation, can greatly prolong the service lives of the vehicle batteries and can be widely applied to life prolonging of the vehicle batteries.

Description

technical field [0001] The invention relates to a protection device for a rechargeable battery, in particular to a life extension protection device for a battery of a motor vehicle. Background technique [0002] Most of the existing motor vehicle batteries do not adopt over-discharge or over-charge protection technology, so due to the irregular use of the car owner, it is easy to cause over-discharge or over-charge of the battery, which greatly shortens the service life of the battery; very few motor vehicles are equipped with a A so-called "lead-acid battery protector" to protect the battery, the protector can effectively prevent the generation of new crystalline sulfide by removing the crystalline sulfide on the battery plate, so that the battery plate is always in a new and efficient working state , Improve the working efficiency of the battery and prolong the service life of the battery. The protector has a certain life-prolonging protective effect on the storage batter...

AI Technical Summary

Problems solved by technology

[0002] Most of the existing motor vehicle batteries do not adopt over-discharge or over-charge protection technology, so due to the irregular use of the car owner, it is easy to cause over-discharge or over-charge of the battery, which greatly shortens the service life of the battery; very few motor vehicles are equipped with a A so-called "lead-acid battery protector" to protect the battery, the protector can effectively prevent the generation of new crystalline sulfide by removing the crystalline sulfide on the battery plate, so that the battery plate is always in a new and efficient working state , improve the working efficiency of the battery and prolong the service life of the battery

The protector has a certain life extension protection effect on the battery, but it still cannot fundamentally prolong the service life of the battery

[0003] On November 3, 1999, the Chinese Patent Office disclosed an application for an invention patent called "Active Battery Charging Protection Device" with the announcement number "CN1233874". and cause air leakage, liquid leakage or even burning", the technical solution adopted is "use the high level or low level collected by the microprocessor control circuit to drive the opening or closing of the field effect tube, so as to realize the overcharging of the battery The application has the following limitations: ①. It is not suitable for use on lead-acid batteries. This device is mainly used for charging protection of nickel-metal hydride batteries and lithium-ion batteries on portable electronic devices such as cameras, and cannot be applied to Charging protection of lead-acid batteries on motor vehicles; ②, not suitable for use on motor vehicles

After the charging circuit of the device is disconnected, the charging circuit is closed only when the battery is disconnected from the charger, that is, the protection device cannot be automatically closed to continue charging without taking out the battery, so it cannot be applied to motor vehicles. Battery charging protection; ③, the device can not achieve the function of prolonging the service life of the battery

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