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Prefabricated cabin type lithium ion battery energy storage system and partition heat management method

A lithium-ion battery, prefabricated cabin technology, applied in the direction of battery overheating protection, battery circuit devices, collectors, etc., can solve the problems of long air flow, large pressure loss, large temperature difference between batteries, etc., to reduce environmental temperature fluctuations, Ensure the safety of use and solve the effect of large temperature difference between batteries

Pending Publication Date: 2021-11-23
CHINA ELECTRIC POWER RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a prefabricated cabin-type lithium-ion battery energy storage system and a partitioned heat management method to solve the technical problems caused by the prior art that the air flow is long, the pressure loss is large, and the temperature difference between the batteries is large. The use safety of prefabricated cabin lithium-ion battery energy storage system

Method used

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  • Prefabricated cabin type lithium ion battery energy storage system and partition heat management method

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Embodiment 1

[0036] see figure 1 As shown, the present invention provides a prefabricated cabin lithium-ion battery energy storage system, including a prefabricated cabin 1; the inside of the prefabricated cabin 1 is divided into N battery compartments 11 by a heat insulation layer, numbered 1#, 2#, 3#. ..N#; preferably, the battery compartment 11 is an airtight battery compartment; multiple batteries 110 and one temperature control device 21 are arranged in the battery compartment 11; a fire extinguishing device 3 is also provided in the prefabricated cabin 1, and the fire extinguishing device 3 passes the fire extinguishing The agent pipeline 30 is connected to each battery compartment 11; the place where the fire extinguishing agent pipeline 30 is connected to each battery compartment 11 is provided with a controllable solenoid valve, and the fire extinguishing equipment 3 is connected to each controllable solenoid valve, which can spray fire extinguishing agent to the designated battery...

Embodiment 2

[0043] This embodiment provides a partitioned thermal management method for a prefabricated cabin lithium-ion battery energy storage system, including the following steps: controlling the temperature control equipment in the corresponding battery compartment 11 in the prefabricated cabin 1 according to the temperature of each battery 110 collected by each temperature sensor 21 start or stop;

[0044] Among them, the prefabricated cabin 1 includes N battery compartments 11, N is a natural number greater than 1; each battery compartment 11 is provided with a number of batteries 110, a temperature control device 21 and a temperature sensor for collecting the temperature of each battery 110.

[0045] Preferably, the prefabricated cabin-type lithium-ion battery energy storage system in Embodiment 2 is the prefabricated cabin-type lithium-ion battery energy storage system described in Embodiment 1.

Embodiment 3

[0047] This embodiment provides a zoned thermal management method for a prefabricated cabin-type lithium-ion battery energy storage system, based on the prefabricated cabin-type lithium-ion battery energy storage system in Embodiment 1, including the following steps:

[0048] Collect the temperature of each battery 110 in each battery compartment 11, and calculate the battery temperature difference ΔT of each battery compartment 11 1 , ΔT 2 , ΔT 3 …ΔT i …ΔT N , ΔT i Indicates the difference between the temperature of the battery with the highest temperature and the temperature of the battery with the lowest temperature in the i-th battery compartment; and find the highest battery temperature T in the i-th battery compartment i ; The temperatures of the batteries with the highest temperature among the N battery compartments 11 are respectively T 1 , T 2 , T 3 …T N ;

[0049] Sort the highest battery temperatures of each battery compartment 11, select the top |N / 2| high...

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Abstract

The invention belongs to the technical field of lithium ion batteries, and discloses a prefabricated cabin type lithium ion battery energy storage system and a partition heat management method. The system comprises a prefabricated cabin which is divided into N battery cabins, wherein N is a natural number greater than 1, a plurality of batteries and a temperature control device are arranged in each battery cabin, and a temperature sensor for collecting the temperature of each battery is arranged in each battery cabin; and a temperature control system which is connected with each temperature sensor and each temperature control device, and is used for controlling the corresponding temperature control device to start or stop according to the temperature of each battery collected by each temperature sensor. According to the present invention, the prefabricated cabin is divided into a plurality of independent areas through partitions, each independent area is provided with a set of temperature control devices, and regional heat management is carried out through the temperature data collected by the temperature control system, so that the technical problems that in the prior art, an air flow is longer, and pressure loss is larger are effectively solved.

Description

technical field [0001] The invention belongs to the technical field of lithium-ion batteries, and in particular relates to a partitioned heat management method and system for a prefabricated cabin-type lithium-ion battery energy storage system. Background technique [0002] In the large-scale application of energy storage systems, prefabricated cabin lithium-ion battery energy storage systems are gradually becoming the mainstream application form due to their outstanding flexibility and convenience. Judging from the existing and under-construction energy storage power stations, most of the energy storage systems are prefabricated cabins. Compared with traditional fixed energy storage power stations, the modular design of the prefabricated cabin lithium-ion battery energy storage system adopts standardized container sizes, allowing ocean and road transportation, and can be hoisted by overhead cranes. It has strong mobility and is not affected by regions. limit. In addition,...

Claims

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Application Information

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IPC IPC(8): H02J7/00
CPCH02J7/007194H02J7/00309
Inventor 刘皓赖铱麟渠展展杨凯高飞张明杰范茂松耿萌萌
Owner CHINA ELECTRIC POWER RES INST
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