Self-maintaining descending slow-pulse fast charging method for lead-acid battery

Abstract

The invention discloses a self-maintaining descending slow-pulse fast charging method for a lead-acid battery. The invention is characterized in that a temperature sensor and a detection circuit module are arranged in each unit cell of the lead-acid battery; the detection circuit module comprises a unit cell voltage and temperature sampling circuit, a singlechip, a sampled signal conditioning circuit; the voltage and temperature changing rate of each unit cell of the lead-acid battery is sampled, and simultaneously a charging current is sampled; and sampled data is transmitted to the micro processing module of a charger through the detection circuit module in each unit cell and a peripheral bus interface in a bus communication mode, and the micro processing module of the charger carries out adaptive control on the charging process according to the transmitted data. The invention can better inhibit each unit cell overcharging, control the occurrence of thermal runaway and predicate unit cell invalidation tendency in advance; and since a descending slow-pulse charging mode is adopted in the whole charging process, the invention has the advantages of effectively inhibiting the polarization phenomena generated in the charging process, accelerating the charging speed and the like.

Description

technical field [0001] The invention relates to a self-maintenance decreasing slow pulse fast charging method of a lead-acid battery, which belongs to the technical field of lead-acid battery charging. Background technique [0002] Most of the current charging methods for lead-acid batteries are based on the standard three-stage charging method. This method has a simple control strategy, is relatively mature, and is also accepted by the public. However, with the accelerated pace of society and the impact of global resource strategies, using this method There are serious deficiencies in charging lead-acid batteries: [0003] 1. The charging time is too long: [0004] Generally, the standard three-stage charging method takes 8 to 10 hours to charge the lead-acid battery, which can no longer meet people's current social needs and offset the cost-effective advantages of lead-acid batteries compared to other batteries; [0005] 2. Accelerated the failure time of lead-acid batte...

AI Technical Summary

Problems solved by technology

[0010] At present, the problem of the cycle life of the lead-acid battery is mostly solved by pulse repair, and it is carried out after the lead-acid battery reaches a certain degree of vulcanization. Most of the repair time is manually set, and the repaired lead-acid battery The service time of the lead-acid battery is about 0.5 to 1 year. The uneven level of repair theory and repair equipment also causes the frequent occurrence of secondary failure problems of lead-acid batteries.

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