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Power lithium battery pack charging management circuit

A charging management circuit and lithium battery pack technology, applied in battery circuit devices, charge equalization circuits, circuit devices, etc., can solve problems such as unbalanced battery packs, achieve unbalanced problems, ensure practicability and reliability, and simplify The effect of the design

Inactive Publication Date: 2017-06-20
范洪国
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a charging management circuit for a power lithium battery pack, the circuit structure is relatively compact, and the energy-saving file battery pack equalizer charger designed by the shunt method can well solve the problem of unbalanced charging of the battery pack and effectively prevent overcharging. , improve the safety of the file battery, increase the charging capacity of the battery pack, prolong the service life of the lithium battery pack, control the heat generation, and ensure the long-term stable work of the charger

Method used

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  • Power lithium battery pack charging management circuit
  • Power lithium battery pack charging management circuit

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with drawings and embodiments.

[0016] Such as figure 1 , the power frequency alternating current is converted into 18V / 5A direct current through the switching power supply and output to the booster circuit, the booster circuit provides a certain charging current for the battery pack according to the control signal of the CPU, and the voltage monitoring circuit feeds back the real-time voltage of the battery to the CPU , The CPU realizes the control of the overall charging voltage and current of the battery pack through the boost circuit. The charging rate adjustment of each single battery is realized through the equalizing circuit to ensure the consistency of the charging of the entire battery pack.

[0017] Such as figure 2 , The input and conversion link of electric energy is composed of two parts: switching power supply circuit and voltage regulating circuit. The switching power supply converts ...

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Abstract

A charge management circuit for a power lithium battery pack is composed of a boost circuit, a voltage monitoring circuit, and a shunt control circuit. The charger adopts the design of energy-saving shunt method, adding a bypass resistor to each battery. When a single battery is higher than other batteries in the group, all or part of the charging current is introduced into the bypass resistor, so as to realize the charging of each cell. The balanced charging of the whole battery, the circuit structure is relatively compact, and the energy-saving file battery pack equalization charger designed by the shunt method solves the problem of unbalanced charging of the battery pack, effectively prevents overcharging, and improves the use of the file battery. Safety, increases the charging capacity of the battery pack, prolongs the service life of the lithium battery pack, controls the heat generation, and ensures the long-term stable operation of the charger.

Description

technical field [0001] The invention relates to a charge management circuit for a power lithium battery pack, which is suitable for the field of charge management. Background technique [0002] With the development of society and the continuous improvement of industrial technology, the demand for crude oil is increasing, and the international crude oil price is soaring. The research of various new energy sources has become the focus of public attention. As a power source, electric energy has been widely used in various vehicles. Lithium batteries have become the first choice for power electric energy due to their high energy-to-mass ratio and energy-to-volume ratio, no memory effect, many rechargeable times, and long service life. , as a new type of power technology, lithium batteries must be connected in series in order to meet the demand for operating voltage. The uneven performance of single cells is not entirely due to technical problems in battery production, even if th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
CPCH02J7/0016
Inventor 范洪国
Owner 范洪国
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