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Backup power supply system, degradation estimation device, and degradation estimation method

A backup power supply and degradation technology, applied in the direction of circuit devices, battery circuit devices, measuring devices, etc., can solve the problem of temporarily stopping the secondary battery of the system

Active Publication Date: 2019-06-18
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the power supply system may not temporarily stop the system at an appropriate timing to estimate the deterioration state of the secondary battery

Method used

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  • Backup power supply system, degradation estimation device, and degradation estimation method
  • Backup power supply system, degradation estimation device, and degradation estimation method

Examples

Experimental program
Comparison scheme
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no. 1 approach

[0015] figure 1 It is a figure which shows the structural example of the electric power system 1a in 1st Embodiment. The power system 1 a includes a power grid 10 , loads 20 , a power conditioner 30 and a backup power system 40 .

[0016] The electric power grid 10 supplies electric power to loads. When the power conditioner 30 operates in the charging mode, the power grid 10 supplies electric power to the power conditioner 30 . On the other hand, when the power conditioner 30 operates in the discharge mode, the power grid 10 receives supply of electric power from the power conditioner 30 . The power grid 10 is a power supply device that supplies power. The power grid 10 includes, for example, a power generation device of a power company, a power conversion device, cables, or a secondary battery.

[0017] The load 20 receives supply of electric power from the electric power grid 10 . When power conditioner 30 operates in the discharge mode, load 20 receives power supply f...

no. 2 approach

[0068] The second embodiment is different from the first embodiment in that a plurality of backup power supply systems 40 are connected in parallel to the power grid 10 and the load 20 . In the second embodiment, only the differences from the first embodiment will be described.

[0069] figure 2 It is a figure which shows the structural example of the electric power system 1b in 2nd Embodiment. The power system 1 b includes a power grid 10 , loads 20 , power conditioners 30 - 1 to 30 -N (N is an integer greater than or equal to 2), backup power systems 40 - 1 to 40 -N, and a host device 50 . In the electric power system 1b, a plurality of backup power supply systems 40 are connected in parallel to each other. That is, the plurality of secondary batteries 400 are connected in parallel to each other. Hereinafter, items common to the backup power supply systems 40 - 1 to 40 -N are described as “backup power supply system 40 ” with abbreviated symbols.

[0070] The high-level...

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PUM

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Abstract

The present invention can estimate the deterioration state of the secondary battery after temporarily stopping the system at an appropriate timing. The standby power supply system (1a) of the present invention has: a secondary battery (400); an interface unit (4100), which sends a trigger signal corresponding to the user's operation; a charging and discharging control unit (4110), which receives the trigger signal from the interface unit In the case of discharging the secondary battery, the control of charging the secondary battery after discharging, or the control of discharging the secondary battery after charging the secondary battery is performed; the detection unit (4120) detects the secondary battery at different timings. The remaining capacity estimation unit (4130) estimates the remaining capacity based on the voltage of the secondary battery; the deterioration estimation unit (4150) estimates the deterioration state of the secondary battery based on the estimated remaining capacity; and the notification unit (4160) notifies The estimated state of degradation.

Description

technical field [0001] Embodiments of the present invention relate to a backup power supply system, a degradation estimation device, and a degradation estimation method. Background technique [0002] In order to prevent malfunction or shutdown of an electric power system using a secondary battery, it may be necessary to estimate the state of deterioration of the secondary battery. In addition, when estimating the state of deterioration of the secondary battery, it is necessary to temporarily stop the power supply system including the secondary battery. However, the power supply system may not temporarily stop the system at an appropriate timing to estimate the deterioration state of the secondary battery. [0003] prior art literature [0004] Patent Document 1: Japanese Unexamined Patent Publication No. 2011-75461 [0005] Patent Document 2: Japanese Unexamined Patent Publication No. 2012-251806 Contents of the invention [0006] The problem to be solved by the invent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/392G01R31/3835H02J7/00
CPCH01M10/441H02J9/062G01R31/392G01R31/3835H02J7/0048Y02E60/10H02J7/005H02J7/0014G01R31/389
Inventor 内田胜也星野昌幸冈部令金子典广佐藤诚
Owner KK TOSHIBA