Battery packs integrate multiple cells with a BMS and thermal controls for stable power. Key uses include EVs, energy storage, electronics, drones, and medical devices. Examples: Tesla’s 4680 and BYD’s Blade Battery.   The temperature and humidity testing of battery packs is a critical evaluation of their performance and reliability under varying thermal and hygrometric conditions. To simulate real-world operating environments, battery packs must undergo comprehensive testing across diverse conditions, including low temperature with low humidity (LT/LH), low temperature with high humidity (LT/HH), and high temperature with high humidity (HT/HH).   Based on actual case studies, this paper analyzes the technical requirements that a constant temperature and humidity test chamber must fulfill to conduct these assessments effectively.   Key Technical Requirements for Test Chambers:   Temperature Range: Capable of achieving extreme conditions (e.g., -40°C to +85°C) with high stability (±0.5°C).   Humidity Range: Adjustable from 10% to 98% RH, ensuring precision (±2% RH).   Ramp Rates: Controllable temperature/humidity transition speeds (e.g., ≥1°C/min) to simulate rapid environmental changes.   Uniformity: Maintain consistent temperature (±1°C) and humidity (±3% RH) distribution within the workspace.   Data Logging: Real-time monitoring and recording of test parameters for compliance with standards (e.g., ISO 16750, GB/T 31467).   Safety Features: Explosion-proof design, leak detection, and emergency shutdown protocols for hazardous scenarios.   Battery Pack Environmental Testing Conditions 1. Temperature Testing High-Temperature Testing: Simulates vehicle operation or storage in hot climates. Test temperatures typically range from 45°C to 70°C, depending on standards (e.g., ISO, GB, or customer specifications). Test items include:           High-temperature storage          High-temperature cycling          High-temperature discharge   Low-Temperature Testing: Simulates vehicle operation or storage in cold climates. Test temperatures typically range from -40°C to -20°C, depending on standards. Test items include:          Low-temperature storage          Low-temperature startup          Low-temperature cycling          Low-temperature discharge   Thermal Shock Testing: Simulates rapid temperature fluctuations (e.g., -40°C ↔ 70°C) to evaluate the battery pack’s resistance to extreme thermal stress.   Thermal Runaway Testing: Simulates internal/external short circuits to assess the effectiveness of the battery pack’s thermal management and safety mechanisms, preventing explosions or fires.   2. Humidity Testing Damp Heat Cycling Test: Simulates high-temperature, high-humidity environments (e.g., 40°C / 95% RH) to evaluate corrosion resistance and sealing performance.   3. Salt Spray Testing Salt Fog Corrosion Test: Simulates high-salinity coastal environments to verify the battery pack’s corrosion resistance.   4. Waterproof Testing Water Ingress Test: Simulates water exposure (e.g., immersion, rain) to validate waterproofing performance (evaluated by IP protection rating).   5. Dustproof Testing Dust Ingress Test: Simulates high-dust environments (e.g., deserts) to verify sealing integrity.   6. Low-Pressure Testing Altitude Simulation Test: Simulates atmospheric pressure changes at different elevations to assess battery pack adaptability.   Technical Specifications for Constant Temperature & Humidity Test Chamber (Compliant with customer requirements)   Chamber Dimensions Internal dimensions (W×D×H): 3000 × 2000 × 2000 mm   Functional Requirements 1.Temperature Range: -60°C to +150°C   2.Heating Rate: ≥1°C/min (average, under load: 1T, 5kW heat output) from -40°C to +125°C   3.Cooling Rate: ≥1°C/min (average, under load: 1T, 5kW heat output) from +125°C to -40°C   4.Temperature Resolution: 0.01°C   5.emperature Fluctuation: ≤±0.2°C (no load)   6.Temperature Deviation: ≤±2°C   7.Temperature Uniformity: ≤2°C (no load)   8.Continuous Low-Temperature Operation: 1000 hours at low temperature without frost/icing (requires dry air system)   9.Humidity Resolution: 0.1% RH   10.Humidity Fluctuation: ≤±2.5% RH   11.Humidity Deviation:        ≤+3% RH (when >75% RH)         ≤±5% RH (when <75% RH)   12.Extended Operation Capability:        Low-temperature & low-humidity: 240 hours        High-temperature & low-humidity: 240 hours   Key Enhancements & Scientific Rigor 1.Standard References: Added implicit compliance with ISO, GB, and IP standards for credibility.   2.Precision Metrics: Specified resolution, uniformity, and deviation to meet engineering demands.   3.Safety & Reliability: Highlighted frost prevention (dry air system) and long-duration testing capability.   4.Clarity & Structure: Organized into logical sections for readability while maintaining technical accuracy.   To meet the rigorous demands of battery pack environmental testing, our advanced constant temperature and humidity test chambers are engineered to deliver precision, reliability, and compliance with global standards.   Why Choose Our Environmental Test Chambers? ✅ Wide Temperature Range: -70°C to +150°C for comprehensive high/low-temperature testing, including thermal shock. ✅ Rapid Temperature Transition: ≥1°C/min heating/cooling rates under load (1T, 5kW heat output). ✅ High Humidity Precision: 10%–98% RH with ±2.5% RH fluctuation and 0.1% resolution for accurate damp heat cycling. ✅ Stable Long-Duration Operation: 1000+ hours at extreme low temps (anti-frost dry air system included). 240+ hours in low-humidity conditions (both high & low temp). ✅ Uniformity & Accuracy: ≤±0.2°C temp fluctuation (no load) ≤2°C spatial uniformity. ✅ Large Testing Capacity: 3000×2000×2000mm (W×D×H) internal workspace of Walk-in Climate Test Chamber for full-scale battery pack evaluations. ✅ Safety & Durability: Designed for thermal runaway prevention, salt fog, waterproof (IP-rated), and dustproof testing.

高度な環境テストを提供できます。Dragon の環境温度テスト チャンバーは、テストにおいて、非常に正確な温度制御、高速なランプ レート、狭い温度マージンを実現できます。Dragon Thermal Air 温度強制システムは、テスト対象にクリーンで乾燥した温風と冷風の流れを直接供給できます。環境ストレス スクリーニング、温度調整、熱衝撃、その他の温度テスト要件は、Dragon 温度システムが実現できるものです。

熱空気温度強制システムの用途:製品デザイン温度調節 受入検査温度プロファイリング熱応力熱サイクリング 

電子センサーには環境評価が必要です。電子センサーは正確な測定能力を持っていますが、 影響を受ける 厳しい気温やその他の厳しい環境の変化によって、 ドラゴンチャンバー熱システム できる シミュレートする 温度環境と効果的に テスト 極限環境にさらされる電子センサーの性能を確保し、 安全性 そして 信頼性 電子センサーの製造および使用前の検査。