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Lithium battery set used for UPS

A lithium battery pack and lithium battery technology, applied in the direction of secondary batteries, battery parallel conversion, battery circuit devices, etc., can solve the problems of low reliability, poor maintainability and supportability, etc., to improve work reliability and maintainability and security, the effect of decomposing volume and weight

Inactive Publication Date: 2018-10-26
BEIJING MECHANICAL EQUIP INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above analysis, the embodiment of the present invention aims to provide a lithium battery pack for UPS to solve the problems of low reliability, poor maintainability and guarantee of lithium battery packs in the prior art

Method used

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  • Lithium battery set used for UPS
  • Lithium battery set used for UPS
  • Lithium battery set used for UPS

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Embodiment 1

[0043] Such as figure 2 As shown, a specific embodiment of the present invention discloses a lithium battery pack for UPS, including m×n battery cells, wherein, m represents the number of rows, n represents the number of columns, m≥2, n≥2 . The m battery cells in each column are sequentially connected in parallel, and then sequentially connected in series to form a lithium battery pack for UPS.

[0044] Each battery unit includes J single lithium batteries and an isolated charger. Each battery unit is a module with the same structure, function, and interface. J single lithium batteries are connected in series in sequence, and then connected in parallel with an isolated charger to supply power to the outside. The isolated charger is used to charge J single lithium batteries. The charging signal is an AC signal.

[0045] During implementation, an AC voltage signal is input at the input end of each isolated charger, and the lithium battery pack is charged and stored accordin...

Embodiment 2

[0048] Such as image 3 As shown, optimization is carried out on the basis of the above-mentioned embodiments, and the lithium battery pack used for UPS includes 4 battery cells. Each battery unit is composed of G1, G2, ..., GJ, a total of J single cells connected in series, and has an independent isolated charger and a resistive heating device (used to heat the lithium battery at low temperature). The input signal of the isolated charger is an AC signal.

[0049] After the four battery units are connected in parallel, they are connected in series to form a lithium battery pack for external power supply. Each battery unit has an independent isolated charger, which independently completes the charging function of each battery unit, and has independent functions, which is convenient for battery maintenance and protection. The resistive heating device of each battery unit, under the condition of low temperature, uses the charging energy or the small current discharge of the bat...

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Abstract

The invention relates to a lithium battery set used for a UPS and belongs to the technical field of UPS. The objective of the invention is to solve problems of poor reliability, maintainability and supportability of the lithium battery set in the prior art. The lithium battery set comprises m*n cell units, wherein m represents the line number, n represents the row number and m and n are larger than or equal to 2. m cell units in each row are successively parallelly connected and n cell units in each line are successively serially connected. Structures, functions and ports of the cell units arethe same. The interior of each cell unit comprises multiple serially connected single lithium battery, an isolation charger and a resistive heating device. The serially connected lithium batteries are parallelly connected with the isolation charger and the resistive heating device. The resistive heating device is used for improving low-temperature working performance of the lithium batteries. Theisolation charger is used for charging the lithium batteries. According to the invention, by use of the serial connection and parallel connection, and combining modularization design, working reliability, maintainability and guarantee ability of the lithium battery set are improved.

Description

technical field [0001] The invention relates to the technical field of uninterruptible power supply (UPS), in particular to a lithium battery pack used for UPS. Background technique [0002] At present, UPS has been widely used in all walks of life in our country. As the heart of UPS, the energy storage device is generally realized by batteries. Commonly used batteries include lead-acid batteries and lithium batteries. Among them, lead-acid batteries have been gradually replaced by lithium batteries in recent years due to their low specific energy, short service life and frequent daily maintenance. [0003] Lithium batteries have the advantages of high charging efficiency, high energy density, small size, light weight, environmental friendliness, and long service life. But at the same time, the charge and discharge control of lithium batteries is more complicated, and the low temperature characteristics are poor. In recent years, centering on lithium battery technology, ...

Claims

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Application Information

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IPC IPC(8): H02J7/00H02J7/02H01M10/615H01M10/623
CPCH02J7/0024H02J7/02H01M10/615H01M10/623Y02E60/10
Inventor 胡永峰王烨季金虎蔡华
Owner BEIJING MECHANICAL EQUIP INST
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