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Hybrid energy storage system

A hybrid energy storage system and storage battery technology, applied in the field of energy storage systems, can solve the problems of unfavorable high energy density and high power density, complex structure and control, and high configuration cost, avoiding frequent charging and discharging, simple structure and low cost. Effect

Inactive Publication Date: 2019-04-12
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the configuration cost of the active energy storage system is high, and the structure and control are complicated. The DC / DC converter is affected by the power demand, and the configuration is relatively large, which is not conducive to the realization of high energy density and high power density.

Method used

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0019] Such as figure 1 As shown, the hybrid energy storage system of the present invention is composed of a battery BAT, an inductor L1, a battery connection control switch S1, a supercapacitor C1, a supercapacitor connection control switch S2, a DC / DC converter D, and a load R1. The positive terminal BAT+ of the battery BAT is connected to the positive terminal L1+ of the inductor L1, the negative terminal BAT- of the battery BAT is connected to the negative terminal R1- of the load R1; the negative terminal L1- of the inductor L1 is connected to the positive terminal of the battery control switch S1 S1+ connection; the negative terminal S1- of the battery connection control switch S1 is connected to the positive terminal R1+ of the load R1; the positive terminal C1+ of the supercapacitor C1 is connected to the negative terminal S2- of the su...

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Abstract

The invention relates to a hybrid energy storage system. The hybrid energy storage system comprises a storage battery, an inductor, a storage battery connection control switch, a supercapacitor, a supercapacitor connection control switch and a load. The storage battery is connected with the load through the inductor and the storage battery connection control switch; the supercapacitor is connectedwith the load through the supercapacitor connection control switch; and the storage battery and the supercapacitor perform energy exchange through a DC / DC converter. According to the hybrid energy storage system, the storage battery supplies energy to the load through the inductor, so that the current impact is reduced; the supercapacitor is directly connected with the load through the control switch, so that the response speed of the load power requirement is increased. By combining the advantage of energy-type energy storage, the load power requirement can be better met; and meanwhile, thestructure is more compact and the size is smaller.

Description

technical field [0001] The invention relates to an energy storage system, in particular to a hybrid energy storage system. Background technique [0002] With the rapid development of the economy, the load has higher and higher requirements on the energy storage system. A single energy storage system is affected by its own performance, and it is difficult to meet the needs of the load. It is urgent to develop an energy storage system with both high power density and high power density. . Combining high-energy-density batteries with high-power-density supercapacitors to form a combined hybrid energy storage system can not only provide the load with the required high energy density, but also meet the load's requirements for high power density. Among all kinds of chemical and physical energy storage, the battery has high energy density, but its power density is low, which is suitable for occasions with low power continuous energy demand, but cannot meet the requirements of shor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J15/00H02J7/34
CPCH02J7/345H02J15/00
Inventor 师长立徐斌李宁宁骆晨
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI