A lithium battery rescue system with interface adaptation and hybrid charging control

Abstract

This invention provides a lithium battery pack recovery system with interface conversion and hybrid charging control, aiming to solve the problems of fragile interfaces and low balancing efficiency at the end of charging when maintaining multi-series drone batteries. The system includes an interface adapter module that converts the battery's multi-pin balancing connector into a high-durability industrial connector and connects to the host unit via an N+1 wiring architecture; a host unit containing a battery monitoring module and a multi-channel isolated charging module; and a control unit. This control unit is configured to: when the cell voltage reaches a preset intervention condition (such as the external main charger entering constant voltage mode), activate the isolated charging module to replenish the specific lagging cell, and has a low-voltage lockout function to ensure safety.

Claims

1. A lithium battery pack rescue system with interface conversion and hybrid charging control, adapted to a battery pack, characterized in that it comprises: An interface adapter module has an input terminal and an output terminal. The input terminal is adapted to the multi-pin balanced interface of the battery pack, and the output terminal is a multi-pin industrial connector plug. A main unit has a corresponding industrial connector socket, which is electrically connected to the interface adapter module through the combination of the industrial connector socket and the plug. The main unit internally includes: a battery monitoring module for sampling the voltage information of each individual cell in the battery pack; a multi-channel isolated charging module including a plurality of electrically isolated power conversion units, the output terminal of each power conversion unit being respectively connected to both ends of an individual cell; and a control unit coupled to the battery monitoring module and the multi-channel isolated charging module. The control unit is configured to control the on / off state of each power conversion unit according to the voltage information.

2. The lithium battery pack rescue system with interface conversion and hybrid charging control as described in claim 1, characterized in that, for a battery pack with N series connections, the industrial connector and connecting cable are configured with at least N+1 conductive loops, which are respectively connected to the total negative terminal of the battery pack and the positive terminal of each individual cell.

3. The lithium battery pack rescue system with interface conversion and hybrid charging control as described in claim 1, wherein when the battery pack is 12 strings (12S), the industrial connector is of 16-pin specification, wherein 13 pins are used for electrical connection; and when the battery pack is 14 strings (14S), the industrial connector is of 17-pin specification, wherein 15 pins are used for electrical connection.

4. The lithium battery pack rescue system with interface conversion and hybrid charging control as described in claim 1, characterized in that the control unit has a built-in low voltage lockout logic. When the voltage of any single cell is detected to be lower than a preset safety value, the control unit locks the multi-channel isolated charging module to a closed state and issues an alarm through the host unit.

5. The lithium battery pack rescue system with interface conversion and hybrid charging control as described in claim 1, characterized in that the interface conversion module is a box structure independent of the main unit, and the main unit panel is provided with independent display screens corresponding to different battery pack numbers and connection sockets with dust covers.

Images