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About Us
Guangdong Haotian Testing Instrument Co., Ltd
Date: 2025-09-04Read: 5
In the field of performance verification of power batteries, a step-by-step approachTemperature and humidity test chamberIt is a core device that simulates the entire scene environment and breaks through the bottleneck of charging and discharging efficiency and lifespan. Guangdong Haotian Testing Instrument Co., Ltd. (referred to as "GuangHaotian") has solved environmental testing problems for leading domestic new energy vehicle and battery manufacturers with customized walk-in temperature and humidity test box solutions, helping to increase the cycle life of the new generation of power batteries by 40% and improve low-temperature charging and discharging efficiency by 35%.
In response to the research and development needs of a certain automotive company for high-energy density ternary lithium batteries, Guanghaotan has customized a walk-in modelTemperature and humidity test chamberRealize wide temperature range control from -40 ℃ to 85 ℃, with temperature fluctuation of ≤± 0.3 ℃ and humidity control range of 20% to 98% RH, in compliance with GB/T 31467.3 and UN 38.3 standards. In simulating the extreme cold environment in Northeast China, the walk-in temperature and humidity test chamber has the ability to quickly change temperature at 15 ℃/min, accurately reproduce the -30 ℃ low-temperature start-up scenario, and monitor the battery charging and discharging curves in real time. After testing, the charging efficiency of the battery increased from the initial 30% to 65% in an environment of -25 ℃, and the increase in internal resistance was controlled within 120%. The key data provided support for optimizing the BMS (Battery Management System) preheating algorithm, ultimately increasing the vehicle's low-temperature range achievement rate to 78%.
To solve the problem of high temperature cycle life, Guanghaotian Step inTemperature and humidity test chamberBuild an accelerated aging scenario of "85 ℃+60% RH" for a battery manufacturer. The equipment is equipped with a French Taikang two-stage compressor unit and an explosion-proof monitoring system, which simulates battery fast charging cycles for 1000 hours continuously and successfully captures the critical point of electrolyte decomposition. Comparative data shows that the capacity decay rate of the optimized battery decreased from 18% to 9% during high-temperature cycling at 65 ℃, and the cycle life exceeded 2000 times, far exceeding the industry average of 1500 times.
In response to the high humidity environment in Southeast Asia, the walk-in temperature and humidity test chamber has added a 98% RH high humidity+salt spray composite module to simulate the humid and hot corrosive environment in coastal areas. A manufacturer has verified through this device that defects in the battery pack sealing process can cause a 15% decrease in insulation resistance for every 10% increase in humidity (RH). After optimizing the sealing ring material based on test data, the battery was stored in a 90% RH environment for 3 months, and the insulation resistance retention rate was increased to 92%, solving the short-circuit hazard in tropical areas.
The intelligent features of the Guanghaotian walk-in temperature and humidity test chamber have also been recognized by customers. A battery laboratory of a certain car company has achieved 24-hour unmanned testing through a remote monitoring system, which has increased data collection efficiency by 70% and shortened the 120 group cycle testing period from 45 days to 32 days. The AI data analysis module equipped on the device can automatically generate a lifespan prediction model, providing accurate basis for battery material iteration.
As of now, the Guanghaotan walk-in temperature and humidity test chamber has served 15 power battery companies and completed over 500 full scenario tests. In the future, it will further upgrade its 60 ℃ ultra-low temperature and 150 ℃ high temperature expansion modules to provide more comprehensive environmental simulation support for testing new energy storage devices such as solid-state batteries.