A lithium battery management system for fast charging of drones

A fast charging and management system technology, applied in the field of drones, can solve the problems that the discharge and charging can not be balanced, the energy can only flow in one direction, and it is not conducive to the application of drones, so as to achieve large balanced current and balanced speed Fast, control complexity reduction effect
CN109742459BActive Publication Date: 2021-12-1448TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
48TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
Publication Date
2021-12-14

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Abstract

The invention discloses a lithium battery management system for rapid charging of an unmanned aerial vehicle. The balanced simulation includes a drive control unit and a bidirectional DC / DC isolation unit; the analog front end is connected to the main controller, and is used to collect state information of each lithium battery and send it to the main controller to judge whether it is balanced; The balance control unit is connected with the main controller, and is used to receive the balance instruction of the main controller, and control the drive control unit corresponding to the lithium battery, the drive control unit drives the bidirectional DC / DC isolation unit, adjusts the balance current and voltage, and realizes A single lithium battery with high voltage is boosted and discharged to a lithium battery pack or a lithium battery pack is discharged to a single lithium battery. The management system of the present invention has the advantages of being able to equalize multiple lithium batteries at the same time, large equalizing current, fast equalizing speed, simple structure, and convenient control.
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Description

technical field

[0001] The invention mainly relates to the technical field of unmanned aerial vehicles, in particular to a lithium battery management system for rapid charging of unmanned aerial vehicles. Background technique

[0002] For the application of fast charging of drones, the charging current of lithium batteries is very large. When there is a small difference in the internal resistance of the cells, it is easy to cause imbalance between the cells, so it is necessary to adopt balanced charging measures. At present, most of the mature lithium battery management products on the market are passive equalization, but passive equalization is an energy-dissipative equalization method. The acquisition is limited. In order to maximize the use of the acquired energy, an active equalization method should be adopted. At present, the active equalization method mostly uses a converter plus a switch matrix. For example, during the charging process, when the voltage of a cell is h...

Claims

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