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Charging device and method for nickel-hydrogen battery

A nickel-metal hydride battery and charging device technology, applied to battery circuit devices, secondary battery charging/discharging, circuit devices, etc., to achieve the effects of improving charging performance, prolonging life, and ensuring safety

Inactive Publication Date: 2008-01-23
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a charging device and method for a nickel-hydrogen battery to solve the problems caused by the constant voltage charging method of the nickel-hydrogen battery, so as to increase the service life of the nickel-hydrogen battery

Method used

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  • Charging device and method for nickel-hydrogen battery
  • Charging device and method for nickel-hydrogen battery

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Embodiment Construction

[0024] In the technical solution provided by the present invention: add a thermistor on the battery body, and use the charging control module to realize automatic temperature control of charging; by obtaining measured values ​​such as voltage, current, and temperature of the battery, the battery status and charging status are realized. Control, through trickle charging, constant current fast charging, constant voltage small current charging and other modes to ensure the performance of the battery; batteries from different manufacturers have different identification numbers (ID), and the identification of the battery ID by the charging control module enables different The constant voltage charging voltage is adapted to the performance of batteries from different manufacturers. Because the performance of batteries from different manufacturers is different, the constant voltage charging voltage is different. For example: for the same 7.2V battery, factory A uses 8.4V for the best c...

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Abstract

The present invention relates to a charging equipment for nickel-hydrogen batteries, which comprises a power source management unit, a charging unit and a nickel-hydrogen battery connected with each other and is characterized in that the power source management unit is composed of a charging control module. Wherein, the charging unit is composed of a trickle charging control circuit, a constant current control circuit, a constant voltage control circuit, a charging mode control circuit and a charging circuit. The charging mode control module is connected with the charging control module. The trickle charging control circuit, the constant current control circuit and the constant voltage control circuit are connected in parallel and respectively connected with the charging circuit and the charging control module. The charging circuit is connected with the nickel-hydrogen battery. In addition, the charging control module controls the charging unit to select the constant current charging, the trickle charging or the constant voltage charging to charge the battery according to voltage of the nickel-hydrogen battery. The present invention can enhance nickel-hydrogen battery charging performance, prolong nickel- hydrogen service life and ensure battery safety.

Description

technical field [0001] The invention relates to a nickel-hydrogen battery, in particular to a charging device and method for the nickel-hydrogen battery. Background technique [0002] Among existing wireless terminals, some wireless terminals use nickel metal hydride batteries. Most Ni-MH batteries use constant voltage charging. The constant voltage charging method brings four problems: first, the charging current decreases with the rise of the battery voltage, and the charging time is long; second, due to the influence of the sampling feedback resistor, the charging voltage has a certain error, which makes the charging effect of the product poor The consistency is poor; third, when the charger is over-discharged, the battery cannot be fully charged, and the standby time requirement cannot be met, and when the charging voltage of the battery is too high, overcharging will occur, and there is a hidden danger of accident; fourth, the nickel of different manufacturers The per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H01M10/44
CPCY02E60/12Y02E60/10
Inventor 张宏伟蔡成亮
Owner ZTE CORP
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