Formulation Design for Long-Life Low-Conductivity Battery Coolants
電池用低導電率クーラントの長寿命化に向けた処方設計 電池用低導電率クーラントにおける導電率上昇要因の解析
- Delivery
- Available on this site
- Format
- Price
- Non-members (tax incl.)：￥1,100 Members (tax incl.)：￥880
- Publication code
- 20266173
- Paper/Info type
- Proceedings (Autumn)
No.128-26
- Pages
- 1-5(Total 5 p)
- Date of publication
- Oct 2026
- Publisher
- JSAE
- Language
- Japanese
- Event
- 2026 JSAE Annual Congress (Autumn)
Detailed Information
| Author(J) | 1) 児玉 康朗, 2) 柄澤 涼, 3) 大坪 巧 |
|---|---|
| Author(E) | 1) Yasuaki Kodama, 2) Ryo Karasawa, 3) Takumi Otsubo |
| Affiliation(J) | 1) トヨタ自動車, 2) 日本ケミカル工業, 3) 日本ケミカル工業 |
| Affiliation(E) | 1) Toyota Motor, 2) Japan Chemical Industries, 3) Japan Chemical Industries |
| Abstract(J) | BEVでの低導電率クーラント適用は漏洩時の発熱抑制に有効だが，経年使用で酸化や部材イオン溶出で導電率が上昇．本研究はろう付けイオン溶出を防食剤で抑制し，長期安定化と寿命延長を実現． Translation |
| Abstract(E) | In battery electric vehicles (BEVs), battery cooling system safety and reliability are critical under high-load and high-temperature conditions such as rapid charging and high-power driving. Low-electrical-conductivity coolants reduce the risk of abnormal heating due to leakage; however, conductivity increases over time because of ethylene glycol oxidation and ion dissolution from components. This study identified flux-derived ions from aluminum brazing as a key factor. The use of optimized aluminum corrosion inhibitors effectively suppressed ion dissolution and stabilized conductivity during long-term circulation. The developed coolant formulation extends service life and has been applied to battery cooling systems since 2025, ensuring electrical safety and durability. |
