Smart matrix battery charging-discharging managing system and managing method

Abstract

The invention discloses a smart matrix battery charging-discharging managing system. In the system, a plurality of serial units are connected with a power supply and a load through a total controller after being connected in series; each serial unit consists of a monomer battery or a plurality of parallel single batteries; each serial unit is provided with a motherboard and a short-circuit switch K21 controlled by the motherboard; the motherboard is connected with the total controller through a control bus; each single battery is provided with a daughter board; and the daughter board is communicated with the motherboard through a bus. According to the battery managing system provided by the invention, the working state of each single battery can be controlled accurately without keeping the capacities of all single batteries in the serial units consistent, and great convenience is brought to battery separation and grouping work of battery production plants. The daughter board of the system can be completely integrated and encapsulated into a smart battery together with a battery, so that the production work and the researching and manufacturing work of the battery managing system of battery manufacturers can be performed separately, and devotion to the developing directions of respective fields is realized.

Description

technical field [0001] The invention belongs to the technical field of battery charge and discharge management, and relates to an intelligent matrix battery charge and discharge management system and management method. Background technique [0002] In recent years, the application of medium and large-scale battery packs has revealed the disadvantages of the existing battery management system. The connection mode of the battery pack is divided into two ways: first parallel and then series and first series and then parallel. No matter which method is used, it will involve series connection, so the battery management system will encounter a difficult problem: for the connection in series, since each series unit (series unit can be a single battery or multiple The battery pack composed of single cells connected in parallel) has the same current flow, which makes the management system unable to control the current of each series unit. Therefore, when charging is completed, each ...

AI Technical Summary

Problems solved by technology

No matter which method is used, it will involve series connection, so the battery management system will encounter a difficult problem: for the connection in series, since each series unit (series unit can be a single battery or multiple The battery pack composed of single cells connected in parallel) has the same current flow, which makes the management system unable to control the current of each series unit, so when charging is completed, each series unit cannot be guaranteed to be fully charged

As a result, the total capacity of the battery pack will be determined by the series unit with the smallest capacity, which directly affects the working efficiency and service life of the entire battery pack

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