Secondary cell system having plurality of cells, and method for distributing charge/discharge electric power

A technology of charging and discharging power and distribution method, applied in the direction of charging/discharging of secondary batteries, arrangement of multiple synchronous batteries, secondary batteries, etc.

Active Publication Date: 2015-11-04
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In such a system composed of a plurality of batteries, there is a problem of how to allocate command values ​​such as charge and discharge power for the entire power storage system to individual batteries as constituent elements.

Method used

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  • Secondary cell system having plurality of cells, and method for distributing charge/discharge electric power
  • Secondary cell system having plurality of cells, and method for distributing charge/discharge electric power
  • Secondary cell system having plurality of cells, and method for distributing charge/discharge electric power

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Embodiment Construction

[0026] Hereinafter, the embodiments of the present invention will be described in detail with reference to the drawings.

[0027] (Structure of secondary battery system)

[0028] figure 1 The structure of a secondary battery system according to an embodiment of the present invention is shown in FIG.

[0029] The secondary battery system 10 includes: a battery controller 1 for distributing charge and discharge power to each battery; multiple (for example, 30) PCS2-1 to 2-30, connected to each battery and charge and discharge the battery; And a plurality of (for example, 30) batteries 3-1 to 3-30 are arranged correspondingly to the PCS2-1 to 2-30 in a 1:1 manner, and can be charged and discharged. In this secondary battery system 10, various batteries 3-1 to 3-30 are respectively connected to the DC (direct current) side of their corresponding PCS2-1 to 2-30, and PCS2-1 to 2- The AC (alternating current) side of 30 is all connected in parallel and connected to the power system 4. In...

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PUM

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Abstract

Provided is a secondary cell system having a plurality of cells, capable of contributing to increased service life of cells and enhanced (energy) efficiency of charging / discharging of the system as a whole. A secondary cell system (10) is provided with a plurality of cells (3-1 to 3-30) individual capable of charging / discharging control, a plurality of PCS (2-1 to 2-30) corresponding to and connected to each cell, respectively, for charging / discharging the corresponding cell, and a cell controller (1) for distributing a charging / discharging electric power value for the system as a whole to each of the PCS (2-1 to 2-30) at a periodic or arbitrary timing. The cell controller (1) has a priority order calculation unit for assigning a priority order to the plurality of cells (3-1 to 3-30) at each time on the basis of a degradation characteristic relating to the SOC of each cell (3-1 to 3-30), and a distribution ratio determination unit for distributing a charging / discharging electric power value to the PCS (2-1 to 2-30) in accordance with the priority order.

Description

Technical field [0001] Embodiments of the present invention relate to a secondary battery system having a plurality of batteries that can be individually controlled for charge and discharge, and a method for distributing charge and discharge power or current (hereinafter referred to as charge and discharge power, etc.) using the secondary battery system . Background technique [0002] For applications such as suppression of fluctuations in power generation using natural energy sources such as sunlight and wind, suppression of fluctuations in power demand, or peak shift (Peak Shift), the application of large-scale power storage systems based on secondary batteries is expected. In order to construct such a large-scale power storage system, a number of batteries (sub-battery systems: hereinafter referred to as "batteries") capable of individually controlling charge and discharge power, etc., are combined and applied. In such a system composed of a plurality of batteries, there is a...

Claims

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Application Information

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IPC IPC(8): H02J7/00H01M10/44H01M10/48H02J7/02
CPCH01M10/441H01M10/48H02J7/00H02J7/02H02J7/0019H02J7/00714Y02E60/10H02J7/0013H02J7/0048H02J7/005H02J5/00Y02B40/00Y02E60/13
Inventor 户原正博鲛田芳富水谷麻美远藤保
Owner KK TOSHIBA
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