Circuit used for prolonging service life of lead-acid storage batteries or battery packs

A lead-acid battery, battery pack technology, applied in lead-acid battery, lead-acid battery construction, battery circuit device and other directions, can solve problems such as low specific energy and short service life

Inactive Publication Date: 2018-05-08
杨春晓
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in terms of performance, lead-acid batteries or lead-acid battery packs show the disadvantages of low specific energy and short service life. At present, the specific energy of lead-acid batteries or lead-acid battery packs in application is about 20-40Wh / kg. The cycle life is about 150-1500 times, and the float charge life is about 5-20 years

Method used

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  • Circuit used for prolonging service life of lead-acid storage batteries or battery packs
  • Circuit used for prolonging service life of lead-acid storage batteries or battery packs
  • Circuit used for prolonging service life of lead-acid storage batteries or battery packs

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] The lead-acid storage battery of this embodiment is a flat grid-type lead-acid storage battery with a rated capacity of 2.32Ah (2h rate, 25°C), and its working system is to charge with a constant current at a rate of 0.2 (rated capacity, the same below). After the voltage reaches 2.65V, charge at a constant voltage of 2.65V. The total time for two charges is 6 hours and 24 minutes, and then discharge at a rate of 2 hours and 80% DOD (depth of discharge), and then repeat the above charging and discharging process, that is Work through the above-mentioned charge-discharge cycle, and the working environment temperature is 25±1°C.

[0063] When the remaining capacity of the lead-acid storage battery of the present embodiment (the electric quantity that the battery can discharge last time, hereinafter the same) is 7.3% of its rated capacity, start to carry out the polarity reversal of the present invention and its subsequent charging or charging The discharge operation inclu...

Embodiment 2

[0075] The lead-acid battery of this embodiment is a flat grid-type lead-acid battery with a rated capacity of 2.2Ah (2h rate, 25°C), and its working system is the same as that of Embodiment 1 of the present invention.

[0076]When the remaining capacity of the lead-acid storage battery of the present embodiment is 30% of its rated capacity, start to carry out the polarity reversal of the present invention and its subsequent charging or charging and discharging operations, including the following steps: 1) discharging and the first Secondary polarity reversal: stop the work of the battery, use a charging and discharging device to discharge the lead-acid battery of this embodiment with a current of 0.5 times (1098mA), so that the battery voltage drops from 2.65V when the battery stops working to 0V And finally drop to -0.26V, stop discharging, then stand still for 38min, and proceed to the next step; 2) Change the electrode connection after the first polarity reversal: manual op...

Embodiment 3

[0080] The implementation steps and operations of carrying out the polarity reversal of the present invention and the subsequent charging or charging and discharging operations of the lead-acid battery pack (rated capacity of 2h rate is 2Ah, rated voltage is 4V, 25°C) in this embodiment are the same as the present invention The steps and operations implemented on the battery in Invention Example 1 are basically the same, the difference is that in the operation of this example, the polarity reversal and the subsequent charging or discharging operation are applied to the positive electrode of the lead-acid battery pack and negative pole.

[0081] In other implementations of this embodiment, the charging stop voltage after each polarity reversal is 3.0V or 4.5V.

[0082] In other implementations of this embodiment, the polarity reversal and subsequent charging or charging and discharging operations of the present invention can also be performed on a single battery or some of the ...

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Abstract

The invention discloses circuit capable of realizing one or more times of positive electrode and negative electrode polarity inversion, or polarity inversion and subsequent charging or discharging oflead-acid storage batteries or battery packs, and also discloses a circuit used for prolonging the service life of lead-acid storage batteries or battery packs. The method comprises steps of total twoor more times of positive electrode and negative electrode polarity inversion of lead-acid storage batteries or battery packs and subsequent charging or discharging. The invention also discloses a formation method with steps similar to the above method, and the formation method is also used for lead-acid storage batteries or battery packs. The circuit, the method, and the formation method are helpful for obvious prolonging of the service life of lead-acid storage batteries or battery packs.

Description

technical field [0001] The invention relates to improving or prolonging the service life of a battery or a battery pack, in particular to a method and a circuit for improving or prolonging the service life of a lead-acid battery or a lead-acid battery pack. Background technique [0002] Lead-acid batteries or lead-acid battery packs have been widely used for many years due to their low manufacturing cost, high performance / price ratio, safety, stability, and recyclability, and they occupy the leading position in the sales share of the secondary battery market. However, in terms of performance, lead-acid batteries or lead-acid battery packs show the disadvantages of low specific energy and short service life. At present, the specific energy of lead-acid batteries or lead-acid battery packs in application is about 20-40Wh / kg. The cycle life is about 150-1500 times, and the float charge life is about 5-20 years. There are many factors that affect the service life of lead-acid b...

Claims

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Application Information

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IPC IPC(8): H01M10/12H01M10/42H01M10/44H01M10/46H02J7/00
CPCH01M10/12H01M10/4207H01M10/425H01M10/44H01M10/441H01M10/46H01M2010/4271H02J7/0068Y02E60/10Y02P70/50
Inventor 杨春晓
Owner 杨春晓
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