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Power management system

A power management system, electric power technology, applied in the direction of circuits, measuring power, collectors, etc., can solve problems such as over-discharge and over-charge, and achieve the effect of preventing over-charge or over-discharge

Inactive Publication Date: 2013-05-01
SANYO ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, even if there is no abnormality in the unit cell, if an abnormality occurs in the connection state of a plurality of unit cells, the original function of the battery pack cannot be performed, and overcharging or overdischarging may occur.

Method used

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Embodiment Construction

[0033] Hereinafter, embodiments of the present invention will be described based on the drawings.

[0034] 1. Basic composition of the system

[0035] First, the basic configuration of the power management system in this embodiment will be described.

[0036] exist figure 1 An overall configuration diagram of the power management system in this embodiment is shown in . The power management system includes: a PCS integration board (integration board) 12 supplied with power from an external commercial power source 10, a power conditioner (PCS) 14, an integrated battery unit management unit 16, a system management unit 18, an integrated power monitoring device 20, and battery system 22 . This power management system is installed in factories and the like to supply necessary power to loads of office equipment such as general lighting, general air conditioners, kitchen appliances, servers, and personal computers. To supply electric power to these loads, all electric power may b...

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PUM

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Abstract

Provided is a power management system, wherein charging / discharging is conducted while preventing overcharging / over-discharging with reliability, and charging / discharging control of a storage-battery system (22) comprising a plurality of storage battery units is conducted. An overall storage-battery-unit management unit (16) detects voltages of storage-battery packs composing the storage-battery system (22), voltages of unit cells composing the storage-battery packs, and serial voltages of the storage battery units (24), each of which comprises a plurality of storage-battery packs connected in series. Charging is stopped when either of these voltages exceeds an upper limit value, and discharging is stopped when either of these voltages is less than a lower limit value.

Description

technical field [0001] The present invention relates to a power management system, in particular to a system for controlling charging and discharging of storage batteries. Background technique [0002] In power management, it is appropriate to perform power generation and power supply according to the power consumption of loads. The following Patent Document 1 discloses a configuration including a plurality of photovoltaic power generation power supply systems connected to communication lines as a power supply system of a network system, and measuring weather information such as the amount of sunlight and sending it to the photovoltaic power generation system. An information source device for a power system. [0003] On the other hand, in order to store electric power generated by photovoltaic power generation and cope with fluctuating power consumption of loads, a power storage device composed of a lithium ion battery or the like is used. In the following patent document ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00G01R31/36H01M2/10H01M10/44H01M10/48H02J7/02
CPCH02J7/0021G01R19/16542H02J7/0026H02J2007/0037H01M2010/4278H01M10/441H01M10/42Y02E60/12H01M2010/4271H02J7/007G01R31/3658H02J2007/004G01R31/396H02J7/00306H02J7/00302Y02E60/10H02J7/0013H02J7/0048
Inventor 酒井総一奥田泰生岩崎利哉
Owner SANYO ELECTRIC CO LTD
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