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Charging pattern making device, charging control device, charging pattern making method, and power storage system

A technology of charging mode and manufacturing device, which is applied in the field of power storage system, and can solve problems such as large-scale equipment, accelerated battery deterioration, and reduced fast charging efficiency

Active Publication Date: 2021-06-22
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the characteristics of electrodes such as internal resistance change with use, so if the battery characteristics are not accurately grasped, not only the efficiency of quick charging will decrease, but also the deterioration of the battery may be accelerated.
In addition, the difficult process of measuring the internal resistance is required, which causes problems such as an increase in the processing load and an increase in equipment size.
Or, in order to measure with an external device, it is troublesome to detach the secondary battery

Method used

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  • Charging pattern making device, charging control device, charging pattern making method, and power storage system
  • Charging pattern making device, charging control device, charging pattern making method, and power storage system
  • Charging pattern making device, charging control device, charging pattern making method, and power storage system

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no. 1 approach

[0057] figure 1 It is a block diagram showing an example of a schematic configuration of a power storage system including the charging control device according to the first embodiment. This power storage system includes a storage battery 1 (first battery) and a charge control device 2 . The charge control device 2 includes a charge and discharge control unit 21, a measurement unit 22, an SOC (State of Charge: State of Charge) estimation unit 23, a storage unit 24, a battery characteristic estimation unit 25, an internal resistance correction unit 26, and a charging pattern creation unit. 27. The battery characteristic estimation unit 25 includes a charge and discharge history recording unit 251 , an internal state parameter calculation unit 252 , and a battery characteristic calculation unit 253 . The charging pattern creation unit 27 includes a degradation information storage unit 271 , a degradation information acquisition unit (reference data acquisition unit) 272 , an up...

no. 2 approach

[0219] In the first embodiment, the degradation information acquisition unit 272 acquires the degradation information corresponding to the storage battery 1 from the degradation information stored in the degradation information storage unit 271 . However, since the state of the storage battery 1 varies in many ways, if all the degradation information is stored in the degradation information storage unit 271, the capacity of the degradation information storage unit 271 will increase. In addition, there may be a case where the degradation information corresponding to the storage battery 1 does not exist in the degradation information storage unit 271 . Therefore, in the second embodiment, external acquisition and update of degradation information are performed. Accordingly, the amount of degradation information stored in degradation information storage unit 271 can be reduced, and it is possible to reduce the size of charging pattern creation unit 27 and reduce the manufacturing...

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Abstract

The invention relates to a charging mode making device, a charging control device, a charging mode making method and an electric storage system. Based on the voltage and current of the secondary battery, the value of the current for charging the secondary battery is calculated while considering the deterioration of the secondary battery. The charging control device according to the embodiment controls charging of the secondary battery to be charged based on a charging pattern calculated from a degradation model or a degradation map of the secondary battery and internal state parameters of the secondary battery to be charged. The charging mode is updated based on changes in internal state parameters.

Description

[0001] This application is based on Japanese patent application 2016-179878 (filing date: September 14, 2016), and enjoys the priority benefits of this application. This application incorporates the entire content of this application by reference. technical field [0002] Embodiments of the present invention relate to a charging pattern creation device, a charging control device, a charging pattern creation method, and a power storage system. Background technique [0003] With the miniaturization of information-related equipment, communication equipment, etc., lithium-ion secondary batteries, which have high energy density and can achieve compactness and weight reduction, are widely used as power sources for these equipments. In addition, secondary batteries are also attracting attention in the fields of electric vehicles (EV) and natural energy power generation. Along with this, there is an increasing demand for rapid charging that shortens the charging time of secondary b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H01M10/44
CPCH01M10/446H02J7/007H02J7/00041H02J7/00047Y02E60/10H01M10/425H01M10/46H01M2010/4271H01M2010/4278H01M2220/20H01M2220/30
Inventor 藤田有美森田朋和石井惠奈杉山畅克荒谷涉
Owner KK TOSHIBA