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Uninterruptible power supply medium-and-high voltage lithium battery management system

A management system, medium and high voltage technology, applied in the direction of battery load switching, emergency power arrangement, battery circuit device, etc., can solve the problems of inability to protect the battery, poor battery management effect, etc., and achieve the effect of simple design and good robustness

Inactive Publication Date: 2019-02-26
SHENZHEN SORO ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current high-voltage lithium battery in the uninterruptible power supply has poor management effect on the battery during use, and cannot protect the battery well.

Method used

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  • Uninterruptible power supply medium-and-high voltage lithium battery management system
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  • Uninterruptible power supply medium-and-high voltage lithium battery management system

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Embodiment Construction

[0023] 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.

[0024] see Figure 1-4 , the present invention provides a technical solution: a medium and high voltage lithium battery management system for an uninterruptible power supply, including a storage battery, a controller, a rectifier, a battery converter, and a circuit system. The circuit system is composed of positive and negative bus DC capacitors C6, C7 and Composed of battery inductance L7, switch tube Q3, and diode Q4, when the steady-state potential of the c...

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Abstract

The invention discloses an uninterruptible power supply (UPS) medium-and-high voltage lithium battery management system, comprising a battery, a controller, a rectifier, a battery converter and a circuit system. The circuit system comprises positive and negative bus DC capacitors C6 and C7, a battery inductor L7, a switch tube Q3 and a diode Q4, wherein when the steady-state potential of a junction of the battery inductor L7 and the switch tube Q3 is higher than the battery voltage Ub, the circuit system is a charging circuit; when the steady-state potential of the junction of the battery inductor L7 and the switch tube Q3 is lower than the battery voltage Ub, the circuit system is a discharging circuit. The UPS medium-and-high voltage lithium battery management system realizes the switching of the charging and discharging of the battery by detecting the steady-state potential in the circuit, during charging, automatically switches between a current-limiting equalized charging process,a constant-voltage equalized charging process (including the freewheel equalized charging), and a floating charging process so as to equalize and supplement the individual battery capacity, controlsthe charging current, avoids damage to the battery caused by excessively high charging current, and avoids excessively long charging time caused by excessively low charging current.

Description

technical field [0001] The invention relates to the technical field of battery management, in particular to an uninterruptible power supply medium and high voltage lithium battery management system. Background technique [0002] UPS is an uninterruptible power supply, which is a constant voltage and constant frequency uninterruptible power supply with an energy storage device and an inverter as the main component. It is mainly used to provide uninterrupted power supply to a single computer, computer network system or other power electronic equipment. When the mains input is normal, the UPS will stabilize the mains and supply it to the load. At this time, the UPS is an AC mains voltage stabilizer, and it also charges the battery inside the machine; when the mains is interrupted (accident blackout) At this time, the UPS will continue to supply 220V AC power to the load through the method of inverting the electric energy of the battery inside the machine immediately, so as to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H02J9/06
CPCH02J7/00H02J7/0063H02J7/0068H02J9/062
Inventor 王国庆
Owner SHENZHEN SORO ELECTRONICS
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