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Method and device for charging valve-control type lead-acid accumulator

A lead-acid battery, battery voltage technology, applied in battery circuit devices, secondary battery charging/discharging, circuit devices, etc., can solve problems such as battery unusable

Inactive Publication Date: 2004-12-08
GS YUASA INT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in VRLA batteries, if the water is consumed, the electrolyte dries out prematurely, and the battery cannot be used since the battery contains only a very small amount of electrolyte
Therefore, when the

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  • Method and device for charging valve-control type lead-acid accumulator
  • Method and device for charging valve-control type lead-acid accumulator
  • Method and device for charging valve-control type lead-acid accumulator

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Abstract

A charging method and a charging apparatus which can be used particularly for charging a valve-regulated lead acid battery using a Pb-Sb alloy grid as a positive electrode grid. Primary constant-current charging is performed with a predetermined current value. The primary constant-current charging is further continued for an extension time t after the battery voltage reaches a change-over voltage Vc. After the extension time has passed, the charging is changed over to secondary constant-current charging using a current value smaller than that of the primary constant-current charging. The extension time for continuing the primary constant-current charging is preferably set so as to be shorter as the battery temperature is higher. Also a secondary charging time for executing the secondary constant-current charging is preferably set so as to be shorter when the battery temperature is higher.

Description

technical field [0001] The present invention relates to a method and apparatus for charging a valve-regulated lead-acid battery capable of simultaneously reducing the charging current in steps. Background technique [0002] For charging lead-acid batteries for recycling purposes in electric vehicles, passenger cars, golf carts, etc., short-term two-stage constant current charging is possible. [0003] The two-stage constant current charging method is to charge the lead-acid battery with a large current before the voltage of the lead-acid battery reaches the predetermined switching voltage, and when the voltage reaches the switching voltage, the charging is switched to low current charging, and the low current charging lasts for a predetermined time until the charging rate reaches A predetermined value such as a discharge rate of 120%. [0004] In this charging method, in order to shorten the charging time, it is necessary to perform a preliminary charging cycle with a large...

Claims

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Application Information

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IPC IPC(8): H02J7/00
CPCH02J7/0091H02J7/007194
Inventor 根本圣治
Owner GS YUASA INT LTD
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