Suitable for energy storage scenarios matching the undercharge cycle system of lead-carbon batteries

A lead-carbon battery and energy storage technology, applied in the field of under-charging cycle system, can solve the problems of battery dehydration, uncontrollable charging capacity, battery positive grid corrosion, etc., and achieve the effect of high cost performance of the battery

Active Publication Date: 2018-12-25
SHUANGDENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is no exaggeration to say that the cycle mode of the battery accounts for more than 50% of these factors. At present, the normal use mode in the industry is generally 100%-40% (that is, the cycle of the fully charged state), and the charging voltage of the small cycle and the large cycle Both are 2.35V / pc. The defect of this standard is that the charging capacity cannot be controlled, and it is easy to overcharge the battery, causing a series of adverse effects such as battery grid corrosion and battery water loss. In addition, it cannot meet the fast charging and fast charging requirements of the energy storage industry. put request

Method used

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  • Suitable for energy storage scenarios matching the undercharge cycle system of lead-carbon batteries

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1）

[0023] The invention includes the following devices:

[0024] One Jinfan equipment: its model is: 12V150Ah;

[0025] 18 lead-carbon batteries: model LLC-300Ah, 6 for each method;

[0026] Test environment: keep the normal temperature at 25°C;

[0027] Design parameters on Jinfan equipment for testing.

[0028] The technical solution of the present invention (the discharge depth is cycled between 80% and 20%) is as follows:

[0029] 1) If the battery C10 capacity is qualified, discharge it at 0.2C10A for 1h, and adjust the maximum state of charge to 80%;

[0030] 2) Discharge at 0.3C10A for 2h;

[0031] 3) Charge with constant voltage 2.32V / limited current 0.3C10A until the total charging capacity reaches 102% of the discharging capacity;

[0032] 4) Repeat steps 2 to 3 for 200 times, and charge at 2.32V / limited current 0.3C10 for 12 hours after 200 cycles;

[0033] 5) C10 capacity detection (terminal voltage average 1.80V / monomer), charge at 2.32V / limited current 0.15C10...

comparative approach 2

[0043] Comparison scheme 2: The depth of discharge is cycled between 100% and 40% (the current usage scheme of lead-acid batteries)

[0044] 1) The battery C10 capacity test is qualified;

[0045] 2) Discharge at 0.2C10A for 3h;

[0046] 3) Charge with constant voltage 2.35V / limited current 0.2C10A for 6h;

[0047] 4) Repeat steps 2 to 3 100 times, and charge at 2.35V / limited current 0.2C10 for 12 hours after 100 cycles;

[0048] 5) C10 capacity detection (terminal voltage average 1.80V / monomer), after discharge, charge at 2.35V / limited current 0.15C10A for 16h;

[0049] 7) Repeat steps 1 to 6. When the battery capacity is lower than 60% of the rated capacity of the 10h rate, record the number of cycles, and test again to confirm that it is still lower than 60%. The last 100 cycles are not included in the number of large cycles. .

[0050] Such as figure 1 , From the above test results, it can be explained that the 60% DOD cycle number can be increased by at least 2000 ti...

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Abstract

The invention relates to an insufficient charging cycle system suitable for matching with a lead-carbon battery in an energy accumulation scene. The insufficient charging cycle system comprises a plurality of big cycles, and each three big cycles form a period. The insufficient charging cycle system specifically comprises the following steps: carrying out qualification testing on the battery capacity at the room temperature of 25 DEG C, and regulating the maximum state of charge to 80%C10; and after repeatedly carrying out the step for several periods, when the capacity of a storage battery is less than 60% of 10h rated capacity, recording the cycle index, testing again to determine that the capacity is still less than 60%, and ending the test, wherein the last 100 cycles are not reckoned in the large cycle index. The insufficient charging cycle system has the beneficial effects that on the one hand, the optimal cost performance of the cycle life of the battery is realized; and on the other hand, the overcharging of the battery can be effectively avoided, so that the sulfation of a negative plate, the corrosion of a positive grid and the water loss of the battery can be effectively avoided, and the maximum cost performance of the battery is guaranteed.

Description

technical field [0001] The invention relates to the field of lead-acid batteries, in particular to an undercharge cycle system suitable for matching lead-carbon batteries in energy storage scenarios, and is suitable for applications such as peak shaving and valley filling in energy storage scenarios, oil generators + batteries, and the like. Background technique [0002] In recent years, the global energy storage market has been booming. As a key component of energy conversion and storage, energy storage batteries have occupied an increasingly important position in new energy applications, and have become the most important factor restricting the development of the entire energy storage industry. [0003] In the existing energy storage application environment, lead-acid batteries have been widely used. The existing lead-acid batteries mainly use AGM technology. This technology has the advantages of good safety, low cost, and mature technology. It has certain advantages in the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/44H01M10/06
CPCH01M10/06H01M10/44Y02E60/10
Inventor 徐小亮薛奎网树荣亮陈荣华
Owner SHUANGDENG GRP
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