Double control and double isolation high and low temperature impact test system with heat exchange energy saving compensation

Abstract

The invention relates to a dual-control dual-isolation high and low temperature shock test system with heat transfer, energy saving and compensation functions. The dual-control dual-isolation high and low temperature shock test system comprises two test boxes isolated, a precooling area arranged between the test boxes, a compression control area and a preheating area. An evaporator is arranged in the precooling area. Low temperature valve controls are arranged between the precooling area and the test boxes. A condenser is arranged in the preheating area. High temperature valve controls are arranged between the preheating area and the test boxes. A primary compressor, a secondary compressor, a heat exchanger and a central controller are arranged in the compression control area. The evaporator, the primary compressor and the heat exchanger are connected to form a primary compression unit used for cooling. The condenser, the secondary compressor and the heat exchanger are connected to form a secondary compression unit for heating. The central controller controls the primary compressor, the secondary compressor, the low temperate valve controls and the high temperature valve controls to be on or off. Compared with the prior art, the dual-control dual-isolation high and low temperature shock test system has the advantages such as energy efficiency, compact structure and high service capacity.

Description

technical field [0001] The invention relates to a high and low temperature impact test system, in particular to a double control and double isolation high and low temperature impact test system with heat exchange energy saving compensation. Background technique [0002] According to the temperature test requirements of T.2, Chapter 38, Paragraph 3 (UN38.3) of the United Nations "Recommendation Tests and Standards Manual on the Transport of Dangerous Goods", lithium batteries should be stored at a temperature equal to 72°C ± 2°C At least 6 hours, and then stored at a test temperature equal to -40°C ± 2°C for at least 6 hours. The interval between the two extreme test temperatures is 30 minutes. This procedure is repeated for a total of 10 times. At present, the more common temperature test chambers on the market mainly include two-compartment temperature shock test chambers and three-compartment temperature shock test chambers. The hatchback temperature shock test chamber ha...

AI Technical Summary

Problems solved by technology

For example, when doing a low-temperature test, the compressor starts to work, and the evaporation end produces a temperature that meets the requirements, but a large amount of waste heat is generated at the condensation end, which often requires air cooling or water cooling to dissipate heat, resulting in a waste of energy

On the other hand, there is only one effective sample test area for these two kinds of temperature boxes. If two batches of battery tests are performed at the same time, it is impossible to prevent the failure of one batch of battery tests to contaminate another batch of batteries.

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