Energy storage element management system and corresponding energy storage element management method

Abstract

The invention discloses an energy storage element management system which is used for managing an energy storage unit string composed of a plurality of energy storage units. The energy storage element management system comprises a time-sharing collecting control circuit, a level switching and collecting circuit and a time-sharing collecting selecting circuit. The time-sharing collecting control circuit is used for generating a first control signal according to needs. The level switching and collecting circuit is used for collecting the parameters of the energy storage units in the energy storage unit string. The time-sharing collecting and selecting circuit is connected between the energy storage unit string and the level switching and collecting circuit, and the time-sharing collecting selecting circuit is further connected with the time-sharing collecting control circuit to receive the first control signal generated by the time-sharing collecting control circuit, paths between the energy storage units in the energy storage unit string and the level switching and collecting circuit are powered on in a day parting mode according to the first control signal, and therefore the level switching and collecting circuit collects the parameters of the energy storage units in the energy storage unit string according to the time frames to generate corresponding collecting results.

Description

Technical field [0001] The present invention relates to the technical field of energy storage elements, in particular to an energy storage element management system and a corresponding energy storage element management method. Background technique [0002] Energy storage products, such as batteries or other energy storage components similar to batteries, have been widely used in various electronic products, and energy storage products need to be managed by an energy storage component management system when in use. Taking the battery as an example, the battery management system needs to collect and compare the parameters of the battery, and realize the judgment of the battery state through the collected and compared results, so that the battery can perform management actions such as protection and balance. Therefore, the acquisition circuit and comparison circuit in the battery management system directly determine the performance of the battery management system. [0003] With the ...

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Problems solved by technology

[0004] However, as the number of batteries in the battery pack increases, an independent acquisition circuit and comparison circuit are used for each battery, which will undoubtedly greatly increase the chip area of ​​the battery management system and increase the cost of the product.

Moreover, the battery management system has relatively high requirements for the consistency of the battery, and for each battery using an independent acquisition circuit and comparison circuit, its accuracy generally cannot meet the consistency requirements, and it needs to adjust each acquisition circuit and comparison circuit , which will also increase the cost of using the battery management system

In addition, multiple independent acquisition circuits and comparison circuits will undoubtedly increase the power consumption of the entire battery management chip, and low power consumption is one of the most important requirements in a battery management system

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