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Storage battery packet bidirectional lossless equalization and pulse activation system

A battery pack, non-destructive equalization technology, applied in battery circuit devices, secondary battery repair/maintenance, collectors, etc., can solve problems such as unbalanced discharge, reversed battery polarity, and not fully charged, etc., to prolong the service life, Simple to compose, full-featured effects

Active Publication Date: 2014-02-26
ZHUHAI LONL ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the voltage of each battery is different during the charging process, resulting in some batteries being fully charged while others are not yet fully charged.
During the charging process, if a battery is overcharged, the excess power input will not be stored in the battery, but will be consumed in the electrolyte and cause the battery to overheat. At the same time, the bubbles generated by electrolysis will adhere to the electrodes. , thereby reducing the contact area between the electrode and the electrolyte, and reducing the charging efficiency
On the other hand, when charging is terminated, the charge of each battery is not balanced, which will lead to unbalanced discharge, and even cause the polarity of individual batteries to be reversed due to deep discharge, shortening the life of the battery pack.

Method used

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  • Storage battery packet bidirectional lossless equalization and pulse activation system

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Embodiment Construction

[0012] refer to figure 1 , the present invention mainly consists of three parts, including a digital power controller 2 located below the battery pack 1, a forward synchronous rectification circuit 3 located on the left, and a flyback synchronous rectifier circuit 4 located on the right.

[0013] The storage battery pack 1 is composed of several single cells CE1, CE2...CEn-1, CEn. These batteries are used after being connected in series. ).

[0014] The digital power controller 2 is used to control the on-off of the switching tube in the circuit to realize the transformation function, and to sample the parameters in the circuit, and adjust the control strategy based on the parameters to realize the closed-loop control.

[0015] The main function of the forward synchronous rectification circuit 3 is to convert the DC voltage which is the same as the voltage at both ends of the storage battery pack into the charging DC voltage required for the target battery, so as to supplemen...

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Abstract

The invention discloses a storage battery packet bidirectional lossless equalization and pulse activation system. The system comprises a digital power controller, a forward synchronization rectification circuit and a flyback synchronization rectification circuit. According to the invention, the circuit running feasibility and reliability are taken into full consideration so that the designed circuit system has the advantages of simple composition, convenient control and flexible working. The system has comprehensive functions, can ensure that each individual battery in a storage battery packet maintains at the same charge and discharge depth, and can effectively prolong the service life of the battery packet.

Description

technical field [0001] The invention belongs to the design field of battery pack charging and discharging, and in particular relates to a two-way non-destructive equalization and pulse activation system of a battery pack. Background technique [0002] As an important part of the DC backup power system, the battery pack is an important equipment and emergency use to ensure uninterrupted power supply. When the mains power is abnormal, the DC power supply system directly converts the chemical energy of the battery into DC electric energy and transmits it, so that the electrical equipment can continue to run, providing power guarantee for the equipment, and ensuring the safety and reliability of the power supply system at the same time. In order for the battery to provide sufficient protection for power energy, it is often necessary to connect multiple batteries in series to achieve the required voltage value, which is much higher than the voltage value of a single battery. For...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H01M10/42
CPCY02E70/40Y02E60/10
Inventor 王国平
Owner ZHUHAI LONL ELECTRIC