An energy storage battery system

Abstract

The invention provides an energy storage battery system provided with an auxiliary system. Each energy storage battery in the energy storage battery system is connected to the main pipe through a branch pipe equipped with a control valve, and then connected to the interface of the auxiliary system in the energy storage battery system through the interface of the main pipe. The auxiliary system may include a safety protection system and maintenance regeneration system, so that the cell and electrolyte in each energy storage battery can be in fluid communication with the auxiliary system respectively. When the detection device detects that a certain energy storage battery fails, especially when the temperature rises sharply, the safety protection system injects a flame-retardant gas and / or a flame-retardant liquid into the shell of the energy storage battery to prevent the battery from further reaction, thereby Prevent the battery from burning and exploding. In addition, the maintenance and regeneration system can be used to perform liquid replenishment, liquid replacement, and exhaust operations on a single or all energy storage batteries, thereby improving battery performance, prolonging battery life, and realizing energy storage battery maintenance and regeneration.

Description

technical field [0001] The invention relates to the field of energy storage batteries, in particular to an energy storage battery system with an auxiliary system. Background technique [0002] The energy storage capacity and power of battery energy storage systems are usually high, especially for battery energy storage systems used in fields such as microgrids, distributed power generation, and power grid peak-shaving and valley-filling. Batteries are assembled in series and parallel, so the safety requirements for batteries are very high. If safety protection measures are not adopted, when a battery burns and explodes, it will affect the operation of the entire battery energy storage system, and may even cause a major safety accident in the entire battery energy storage system. Therefore, the safety guarantee of the battery energy storage system is extremely important. Especially for lithium slurry batteries and bipolar lithium batteries in new energy storage batteries, i...

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Problems solved by technology

[0003] In addition, during the long-term use of the energy storage battery, problems such as gradual failure of the electrolyte and consumption of the electrolyte may occur, which will lead to too little electrolyte participating in the electrochemical reaction inside the battery, affecting the conduction of ions in the battery, thereby reducing battery performance.

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