Lithium battery module and lithium battery energy storage device

Abstract

The invention belongs to the technical field of power supplies, and provides a lithium battery module and a lithium battery energy storage device. The lithium battery module comprises a battery assembly and a BMS battery management system electrically connected with the battery assembly; the battery assembly is composed of a plurality of lithium battery cells in a series connection and / or parallelconnection mode; a specially-designed heat dissipation air duct is arranged between every two adjacent lithium battery cells. And meanwhile, a set of refrigerating system is designed for the lithiumbattery module and the lithium battery energy storage device and is used for refrigerating the system when the lithium battery discharges at a high rate and a high current. According to the lithium battery module provided by the invention, the specially designed heat dissipation air ducts are arranged between the lithium battery cells, so that when the lithium battery module is used, the lithium battery module can be subjected to forced ventilation and heat dissipation by adopting fan units such as fans; the refrigerating system can also works, therefore, heat generated by the lithium batterymodule in the charging and discharging process can be quickly released from the heat dissipation air ducts, and high temperature in the lithium battery module is avoided.

Description

technical field [0001] The invention belongs to the technical field of batteries, and in particular relates to a lithium battery module and a lithium battery energy storage device. Background technique [0002] As the data center construction has higher and higher requirements for low cost, low energy consumption, and flexible expansion, in terms of power supply design in the computer room, in addition to the selection of high-efficiency, high-power-density power supply equipment, battery backup time, battery installation size, The safety, manageability and energy density of batteries put forward newer and higher requirements. [0003] The increase of business pressure in the data center has led to a decrease in the availability of UPS (Uninterruptible Power Supply, uninterruptible power supply). At present, the backup power supply of the data center usually has two types: lead-acid battery and lithium battery. These two batteries have their own problems, as follows: [000...

AI Technical Summary

Problems solved by technology

Lithium batteries will generate a lot of heat during the discharge process, especially in the case of high discharge rate, the heat generated will quickly accumulate, which will greatly limit the application of lithium batteries in the field of data center backup power

[0008] Therefore, although lithium batteries have obvious advantages, accidents such as overheating, runaway, and fire have occurred in both electric vehicles and mobile phones.

In the data center, the reliability requirements are higher. In the event of a fire, the entire data center business may suffer serious losses.

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