Cooling liquid leak detection device and battery system

Abstract

Embodiments of the invention provide a cooling liquid leak detection device and a battery system. The cooling liquid leak detection device is applied to a battery pack. The battery pack comprises a plurality of battery modules and liquid cooling modules which are arranged together with the battery modules to be used for heating or cooling the battery modules. The liquid cooling modules include cooling liquid leakiness points. The device comprises moisture absorption modules used for absorbing cooling liquid leaked at the cooling liquid leakiness points, moisture detectors used for obtaining humidity of the moisture absorption modules, a processing controller and an alarm unit. The moisture absorption modules wrap the cooling liquid leakiness points, and the moisture detectors are arranged in the moisture absorption modules. The processing controller is connected to the moisture detectors and the alarm unit and is used for receiving the humidity of the moisture absorption modules from the moisture detectors, and the processing controller controls the alarm unit to give an alarm when the humidity of the moisture absorption modules is greater than preset humidity. The device simultaneously detects whether the liquid cooling modules have cooling liquid leakage and gives the alarm during the leakage.

Description

technical field [0001] The invention relates to the technical field of battery heat management, in particular to a cooling liquid leak detection device and a battery system. Background technique [0002] At present, environmental pollution is very serious, and one of the main causes of environmental pollution is the exhaust emission of automobiles. Because pure electric vehicles have less or no exhaust emissions, the research and development and design of pure electric vehicles are increasingly favored by major manufacturers, and the energy of pure electric vehicles mainly comes from battery modules. [0003] As the main energy storage component of electric vehicles, battery modules are key components of pure electric vehicles and directly affect the performance of pure electric vehicles. The current battery modules are generally lithium-ion power batteries. Although lithium-ion power batteries have excellent power output characteristics and long life, the performance of li...

AI Technical Summary

Problems solved by technology

[0004] Liquid cooling generally uses a pump to circulate coolant in the liquid cooling components to dissipate heat. However, there is currently no detection scheme for the leakage of liquid cooling components.

Leakage of coolant from liquid-cooled components can lead to battery short circuit, battery damage, battery explosion, and breakdown of pure electric vehicles.

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