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Battery equalization system and distributed generation system

A balancing system and battery technology, applied in the field of power electronics, can solve problems such as the barrel effect of the battery pack and affecting the overall performance of the battery pack

Inactive Publication Date: 2019-01-15
SUNGROW POWER SUPPLY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The battery pack is composed of multiple batteries connected in series and parallel. The inconsistency of the battery pack during production and use will cause the "barrel effect" of the battery pack and seriously affect the overall performance of the battery pack.

Method used

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  • Battery equalization system and distributed generation system
  • Battery equalization system and distributed generation system
  • Battery equalization system and distributed generation system

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Embodiment Construction

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0040] The embodiment of the invention discloses a storage battery equalization system, which is used for compensating the influence caused by the inconsistency of each storage battery in the production and use process of the storage battery pack. The storage battery pack can be a battery cell string 101 formed by connecting a plurality of battery cells 100 in series (such as figure 1 shown), it can also be a whole composed of a plurality of battery cell strin...

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Abstract

A battery equalization system and a distributed power generation system are disclosed to compensate for inconsistencies in the production and use of individual batteries in a battery pack. The batteryequalization system comprises a bi-directional DC / DC circuit arranged one-to-one with each battery cell constituting the battery pack, the first port of the bi-directional DC / DC circuit is connectedwith the battery cell, and the battery cell is a single battery or a series-parallel combination of a plurality of batteries; The second ports of all bi-directional DC / DC circuits are connected in series to the energy conversion device, or the second ports of a plurality of bi-directional DC / DC circuits are connected in series to form a series branch, and all the series branches are connected in parallel to the energy conversion device.

Description

technical field [0001] The invention relates to the technical field of power electronics, and more specifically, relates to a storage battery balancing system and a distributed power generation system. Background technique [0002] The battery pack is composed of multiple batteries connected in series and parallel. The inconsistency of the battery pack during production and use will lead to the "barrel effect" of the battery pack, which seriously affects the overall performance of the battery pack. For example, when multiple batteries are directly connected in series, the battery with the worst discharge current (or charge current) determines the discharge capacity (or charge capacity) of the entire battery string; when multiple battery strings are directly connected in parallel, the discharge voltage (or charge voltage) The worst battery string determines the overall discharge capacity (or charge capacity). Contents of the invention [0003] In view of this, the present ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
CPCH02J7/0016H02J7/0019
Inventor 陶磊邹海晏潘年安
Owner SUNGROW POWER SUPPLY CO LTD
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