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Charging optimization manager of lead-acid storage battery

A lead-acid battery and manager technology, applied in the direction of secondary battery charging/discharging, battery circuit devices, collectors, etc., can solve the problems of increased differentiation distance, damage, overcharging, etc., to prevent vulcanization and easy to use Effect

Inactive Publication Date: 2011-04-13
陈赖容
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Long charging time will easily cause overcharging, and insufficient charging time will easily cause undercharging
This is the result of cheap chargers with low output power and high voltage settings
[0028] (1.3.3) Some chargers have positive temperature characteristics due to design or components: that is to say, the higher the ambient temperature, the higher the charging voltage, and the lower the ambient temperature, the lower the charging voltage.
This is the design opposite to the charge acceptance of lead-acid batteries, which will cause overcharging in summer and undercharging in winter
It is very detrimental to the actual use and life of the battery
[0029] (2) The whole battery pack is damaged due to the damage of some cells in the battery pack
[0031] (2.1) The battery vulcanization was not repaired in time;
[0032] (2.2) The battery loses water and is not replenished in time;
[0033] (2.3) The short circuit of the lead crystal between the plates causes the rated voltage of the whole battery to be low;
[0034] (2.4) The short circuit of a single cell causes local damage and damages the entire battery pack;
[0035] (2.5) The electrochemical characteristics of the battery pack lead to consistency errors. Without equalization charging, the distance of differentiation will become larger. During the charging process, cells with high voltage are easily overcharged, while cells with low voltage are undercharged. vulcanization
[0036] (2.6) Due to poor welding of the battery cell, part of the plate is separated from the bus bar, resulting in a smaller capacity than other cells, and the charging process is likely to cause dehydration of the cell
[0037] (3) Battery damage due to high and low temperature environment
[0038] (3.1) High temperature charging is easy to lose water or even bulge to cause damage to the battery
The temperature of the battery reaches or exceeds 60 degrees, which will cause thermal runaway
[0039] (3.2) The low temperature environment will cause the battery's charging acceptance ability to decline, and the battery will be vulcanized if it is in an unsaturated state for a long time. The accumulation of vulcanization will cause the electromotive force of the battery to drop.
[0040] (4) Due to the aging of the battery pack, the charging process cannot be automatically terminated, causing the battery pack to be damaged due to overcharging
[0042] Therefore, if how to solve the above problems, it is to avoid the hundreds of millions of chargers currently used in the market (and more than 30 million three-stage chargers will be added every year) to cause damage to the batteries, making them unsuitable for lead chargers. It is a very necessary and practical technical subject to change the charger of acid battery into a charger suitable for lead-acid battery

Method used

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Examples

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Embodiment Construction

[0069] The present invention will be further described in conjunction with the accompanying drawings and specific embodiments.

[0070] refer to figure 1 As shown, in the existing technology, the three-stage charger 1 is directly connected in series with the lead-acid battery pack 2 to be charged.

[0071] refer to figure 2 The improvement of the present invention lies in that the charging optimization manager 3 of the present invention is connected in series between the original three-stage charger 1 and the lead-acid battery pack 2 . The charging optimization manager 3 monitors and collects the terminal voltage signal of the lead-acid battery pack and the charging current signal of the charging circuit through the controller, and controls an extra voltage to be superimposed on the charging circuit or turns on or off the superimposed extra voltage in a PWM manner. Voltage charging circuit.

[0072] specific reference image 3 and Figure 4 As shown, the charging optimi...

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Abstract

The invention relates to the fields of a charging management circuit and a power management circuit of a storage battery, in particular to a charging management circuit of a lead-acid storage battery. In the invention, a charging optimization manager is serially connected between a charger and a lead-acid storage battery pack; and the charging optimization manager monitors and acquires the terminal voltage signal of the lead-acid storage battery pack and the charging current signal of the charging circuit by means of a controller, controls an extra voltage to be superposed onto the charging circuit in a PWM (pulse width modulation) mode or turns on or turns off the charging circuit superposed with the extra voltage. The charging optimization manager of the lead-acid storage battery has simple structure, is used conveniently and is serially connected between the charger and the battery pack; and by means of full intelligent control, the charging optimization manager can prevent the lead-acid storage battery from being damaged due to overcharging, prevent the lead-acid storage battery from being vulcanized and realize automatic repair and restoration of the vulcanized lead-acid storage battery pack.

Description

technical field [0001] The invention relates to the field of battery charging and battery power management circuits, in particular to a charging management circuit for lead-acid batteries, especially for comprehensive charging parameter correction, protection and automatic repair of lead-acid batteries for light electric vehicles, listed in the IPC International Classification Table It mainly belongs to the H02J subclass. Background technique [0002] statement of problem: [0003] At present, light electric vehicles mainly include electric bicycles, electric motorcycles, electric tricycles, electric small trucks, etc., and the domestic stock has reached more than 120 million. The batteries on each light electric vehicle are 36V, 48V, 60V, 72V etc. Calculated on the basis that each light electric vehicle is equipped with 4 batteries with a rated voltage of 12V, the number of lead-acid batteries used in light electric vehicles in the country will reach nearly 500 milli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/04H01M10/44
CPCY02E60/12Y02E60/10
Inventor 陈赖容
Owner 陈赖容
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