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Lead storage battery system

一种铅蓄电池、电池状态的技术，应用在二次电池、电池电路装置、多个同步电池的安排等方向，能够解决发电输出不稳定、电力系统电力品质降低等问题，达到延长寿命、降低电力费用、减少频度的效果

Inactive Publication Date: 2014-07-09
RESONAC CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although wind power has the advantage of using natural energy and does not emit CO 2 However, due to the dependence on the wind, the output of power generation is unstable, which may have a negative impact on the power system and lead to a decrease in power quality

Method used

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Examples

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Embodiment 1

[0141] Figure 12 The usage status of the lead storage battery system of the example is shown. The horizontal axis represents the elapsed time after equalization charging is performed, and the vertical axis represents the SOC. The use range of SOC (allowable range of SOC) is 30% to 90%.

[0142] In this figure, the next equalization charge is performed before the lower limit value of the deviation in SOC reaches 30%. On the other hand, it is also possible to perform equalization charging before the upper limit value of the variation in SOC reaches 90%.

[0143] Thereby, since many lead-acid batteries are charged without reaching the sulfation range, deterioration of a lead-acid battery can be suppressed.

Embodiment 2

[0145] Figure 13 The usage status of the lead-acid battery system of the embodiment in consideration of the degree of deterioration of the lead-acid battery is shown. The horizontal axis represents the elapsed time after equalization charging is performed, and the vertical axis represents the SOC. The usage range of the SOC (allowable range of the SOC) at the start of use is 30% to 90%.

[0146] In this figure, the lower limit value of the variation in SOC increases from 30% over time. On the other hand, the upper limit value of the variation in SOC decreases from 90% over time. Even when the deterioration of the lead-acid battery advances in this way, equalization charging can be performed so as to narrow the use range of the SOC.

[0147] Thereby, since many lead-acid batteries are charged without reaching the sulfation area, deterioration of a lead-acid battery can be suppressed.

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Abstract

The present invention is able to extend the life of a lead storage battery comprising a group of lead cells whilst preventing deterioration of the lead storage battery. A lead storage battery (151) or lead storage battery module (152) comprising a group of storage cells (101) includes individual battery state measuring units (102) for individually measuring current, voltage, temperature, etc., a state-of-charge model storage unit (103) for storing a state-of-charge model, a state-of-charge estimating unit (104) for estimating the individual states of charge for each storage battery (151) or lead storage battery module (152), a state-of-charge variation range determining unit (105) for calculating the maximum and minimum states of charge, and an equalised charge implementation management unit (109) for controlling the implementation of charge equalisation in the group of lead cells (101). The equalised charge implementation management unit (109) implements charge equalisation so the highest state of charge is within a range lower than the overcharge region, and the lowest state of charge is within a range higher than the sulfation region.

Description

technical field [0001] The present invention relates to lead storage battery systems. Background technique [0002] Global warming is a major problem for all human beings. In various countries, in order to slow down and prevent the increase of warming, build smart grids, promote energy conservation, and are considering the implementation of solar and wind power generation that will not emit CO 2 The introduction of a large number of new energy sources. [0003] Although wind power has the advantage of using natural energy and does not emit CO 2 However, due to the dependence on the wind, the output of power generation is unstable, which may have a negative impact on the power system and lead to a decrease in power quality. In order to prevent such a bad influence on the power system and to effectively use energy, a wind power generation-storage system using a lead storage battery or the like is expected. [0004] The storage battery system for suppressing fluctuations in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/42G01R31/36H01M10/48H02J7/02H02J7/04H02J7/00
CPCH01M10/441H01M10/482H01M10/486H02J7/0014H01M2010/4271G01R31/382G01R31/367G01R31/379G01R31/396H02J3/32H02J2300/28H02J3/381Y02E10/76Y02E60/10
Inventor 安部圭子井上秀树泽敏之渡边雅浩高林久显下浦一朗福原启介
Owner RESONAC CORPORATION
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