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Energy storage system and method for storing energy by using cascaded battery packs

A technology of energy storage system and battery pack, applied in the field of energy storage system, can solve the problems of increasing labor and cost, etc.

Pending Publication Date: 2019-10-01
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, existing re-escalation schemes increase labor and cost

Method used

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  • Energy storage system and method for storing energy by using cascaded battery packs
  • Energy storage system and method for storing energy by using cascaded battery packs
  • Energy storage system and method for storing energy by using cascaded battery packs

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Embodiment Construction

[0024] Specific embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0025] According to an embodiment of the present disclosure, an energy storage system is provided, such as figure 1 As shown, the energy storage system 1 includes at least two series branches 11, the series branches 11 include the directly used ladder battery pack 100 and the voltage conversion module 110, the directly used ladder battery pack 100 and the The voltage conversion module 110 is connected in series, and the at least two series branches 11 are connected in parallel; the voltage conversion module 110 is used to convert the voltage of the cascade battery pack 100 directly used in series with it into a preset voltage, all of the The preset voltages ...

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Abstract

The invention relates to an energy storage system and a method for storing energy by using cascaded battery packs and belongs to the field of energy. The flexibility of second cascaded utilization canbe improved, the design flexibility of the energy storage system is improved, and different needs of different customers can be satisfied. The energy storage system includes at least two series branches which comprise directly used cascaded battery packs and voltage conversion modules, the directly used cascaded battery packs and voltage conversion modules are connected in series, and the at least two series branches are connected in parallel. The voltage conversion modules are used for converting the voltage of the directly used cascaded battery pack connected to the voltage conversion modules in series into preset voltage, and the preset voltage of all the series branches is the same.

Description

technical field [0001] The present disclosure relates to the field of energy, and in particular, to an energy storage system and a method for using a cascade battery pack for energy storage. Background technique [0002] At present, when the decommissioned power battery packs of electric vehicles are re-utilized in occasions such as energy storage power stations with relatively low requirements for power battery packs, it is necessary to disassemble the decommissioned power battery packs, that is, power The power battery sub-module in the battery pack is separated from the battery management unit, and then the separated power battery sub-module is individually tested, screened, and matched so that the power battery with similar battery state parameters (such as capacity, voltage, etc.) The sub-modules reconstitute the battery stack, and then apply the reconstituted battery stack to the energy storage system of the energy storage power station as the energy storage unit of th...

Claims

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Application Information

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IPC IPC(8): H02J7/00
CPCH02J7/0022
Inventor 邓林旺邹德天杨子华
Owner BYD CO LTD
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