Lithium battery test box with automatic fire extinguishing device

Abstract

The invention relates to a lithium battery test box with an automatic fire extinguishing device. The lithium battery test box comprises the automatic fire extinguishing device consisting of a fire extinguishing control box, a heptafluoropropane fire extinguishing agent bottle group, a rubber pipe, a steel pipe, a nozzle, an electric joint thermometer, a sensor probe guide pipe and a steel pipe sleeve, wherein the fire extinguishing control box and the heptafluoropropane fire extinguishing agent bottle group are arranged on the outer side of a test box body; a sensor probe part of the electric joint thermometer penetrates into the test box body by taking the sensor probe guide pipe as a guide pipe; one end, which is positioned in the test box body, of the steel pipe is connected with the nozzle, and the other end of the steel pipe is connected with an electromagnetic container valve on a fire extinguishing agent steel bottle; a control circuit is connected with the electromagnetic container valve and the electric joint thermometer respectively, acquires a temperature signal through the electric joint thermometer and controls the electromagnetic container valve to run according to the acquired temperature signal; when the temperature in the test box is dramatically increased because a tested lithium battery is exploded and combusted, the control device starts an electromagnetic valve, so that a fire extinguishing agent in the heptafluoropropane steel bottle is sprayed out; and therefore, high-temperature detection and automatic fire extinguishing for the lithium battery are realized, and the shortcomings in the prior art are overcome.

Description

technical field [0001] The invention relates to a lithium battery test box, in particular to a lithium battery test box with an automatic fire extinguishing device, which is suitable for high temperature detection and automatic fire extinguishing of the lithium battery. Background technique [0002] At present, the lithium battery test box is widely used in the field of lithium battery production and inspection. The products produced by the existing technology usually have a structure consisting of a box body, an explosion-proof pressure relief device, an air conditioning system, a refrigeration system, a heating system, and an electrical control system. most of the composition. The box body includes the shell and the liner, and is generally made of high-quality stainless steel (thickness 1.2mm), which is durable and reliable in quality. In the form of a single door, each door is equipped with a 250*300mm observation window, and a lighting device is installed above ...

AI Technical Summary

Problems solved by technology

[0003] However, lithium batteries are prone to explosion, fire, and liquid leakage during high-temperature aging testing. When a dangerous situation occurs in one of the batteries, it often causes a chain reaction

However, the existing lithium battery test chambers usually do not have the functions of rapid cooling and fire extinguishing. If a fire occurs in a box with good thermal insulation effect and sealing performance, the temperature in the lithium battery test chamber will increase sharply, and the consequences will be very dire. Therefore, when deflagration occurs When the temperature in the box increases sharply, it is very important to cool down and relieve pressure in time, especially the fire extinguishing function.

[0004] Therefore, the defect of the existing lithium battery test box requires the operator to observe the detection process of the lithium battery through the test box observation window. If an abnormal state is found, the operator needs to take measures to cut off the power supply in time and stop the temperature rise. A hand-held fire extinguishing device is also used to extinguish the fire. Therefore, the test has caused many problems and difficulties. Therefore, the lithium battery test site needs a lithium battery test box with a temperature detection and automatic fire extinguishing device to realize automatic control of the temperature in the lithium battery test box. Detect and extinguish fires, thus making up for the shortcomings of existing technologies

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