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Programmable battery charger

A battery charging and storage battery technology, applied to battery circuit devices, constant current power supply AC circuits, collectors, etc., can solve the problems of battery temperature rise, high cost price, battery burnout, etc., and achieve high conversion efficiency and large design capacity , high reliability effect

Inactive Publication Date: 2014-01-08
中国人民解放军济南军区72465部队
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lead-acid batteries will have a polarization effect during high-current charging, which will cause the battery to heat up. Moreover, if the battery is fully charged by high-current charging, if the control is not timely, the temperature rise of the battery will be very high. In severe cases, the battery may be burned and damaged. explode
[0004] The existing fast chargers in China adopt a simple timing charging method. This type of charger is highly targeted to the battery, and the charging effect is not satisfactory.
Later, a dedicated charging control integrated circuit was used to feed the battery with high-frequency pulsating current to solve the polarization effect. It can accurately judge whether the battery is full by detecting different parameters according to the characteristics of different batteries, and provide temperature protection measures and discharge before initial charging. and other additional functions, but the structure of this charger is complicated, and the cost price is relatively high

Method used

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Embodiment Construction

[0038] In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments are listed below and described in detail in conjunction with the accompanying drawings.

[0039] Battery charging and discharging is a complex electrochemical process. Generally speaking, the charging current decreases exponentially with time during the charging process, and it is impossible to automatically charge at constant current or constant voltage. There are many factors that affect charging during the charging process, such as the concentration of the electrolyte, the concentration of active substances on the plate, and the ambient temperature, which will cause great differences in charging.

[0040] Maas's three laws hold that:

[0041] 1. For any given discharge current, the current acceptance ratio α when the battery is charged is inversely proportional to the square root of the capacity released by the battery, that is

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Abstract

The invention provides a programmable battery charger. A phase shift trigger module of the programmable battery charger converts input 220V alternating-current voltage into alternating voltage and provides the alternating voltage to a high-power voltage transformation module, the high-power voltage transformation module converts the alternating voltage output by the phase shift trigger module into alternating-current voltage which can be used for charging a storage battery, a rectifier filter rectifies and filters the alternating-current voltage output by the high-power voltage transformation module to obtain direct-current voltage which can be used for charging the storage battery, and a chopper switch transmits the direct-current voltage output by the rectifier filter to the storage battery for charging under the control of a controller. The programmable battery charger has the characteristics of small size, high conversion efficiency, great design capacity, high reliability, long service life and the like, has the functions of short-circuit protection, reverse connection protection, low-voltage protection and the like, and can realize the charging, the discharging, the repair and the maintenance of the storage battery.

Description

technical field [0001] The invention relates to a charging device, in particular to a programmable battery charging instrument. Background technique [0002] With the increase of domestic and military motor vehicles and the demand for power supply guarantee in military areas, more and more batteries are used. However, batteries have become the weakest link in these fields, especially in traction applications. Therefore, the charging problem of the storage battery has always been the focus of attention, and a correct and good charging method can ensure the service life of the battery. There are various charging methods for the battery, and different charging methods have different requirements on the circuit of the charger, which will also affect the production cost of the charger. [0003] The relationship between the charging time of the battery and the charging current is: the charging time can be obtained by dividing the battery capacity by the charging current. Conside...

Claims

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Application Information

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IPC IPC(8): H02J7/04H02J3/10
Inventor 李健薛兰柱韩卫东位军刘涛李中彬张可鹏石晓原白兆虎
Owner 中国人民解放军济南军区72465部队
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