浅谈阀控式密封胶体电池技术(二)——胶体电池和AGM电池的比较

Discussion on gel battery technologies of VRLA batteries——Comparisons between gel battery and AGM battery

阀控式铅酸蓄电池包含胶体电池和AGM电池。本文从设计、结构和性能方面系统地比较了胶体电池和AGM电池的差异。从设计上看,两种电池在电解液的固定方式、电解液用量、电解液浓度、极群装配要求、氧气传输通道等方面均有明显不同。从结构上看,它们的外观尺寸、隔板性能、硫酸电解液分布、极板的类型等亦有较大差异。电池的设计和结构决定了电池的性能:胶体电池在使用寿命、深循环性能、耐过充电能力、浮充特性、耐用性、热失控风险、自放电等方面具有明显优势;而AGM电池的体积相对较小,在初始容量和大电流放电性能方面更好。

There are two types of valve-regulated lead-acid（VRLA） batteries： gel battery and AGM（Absorbed Glass Mat） battery. In this paper, the differences of the gel battery and AGM battery are compared from each other with respect to the design, structure, and performance. In terms of the design, gel battery and AGM battery are distinct from the electrolyte fixed way, electrolyte quantity, electrolyte concentration, assembly requirements, and oxygen transmission channel. In regard to the battery structure, these two types of batteries are different in the battery size, separator, electrolyte distribution, and plate type. The battery performance is determined by the design and battery structure. The gel battery offers clear advantages in service life, deep cyclic endurance, overcharging endurance, floating characteristic, robustness, self-discharge, and thermal runaway. Compared to gel battery, AGM battery is relatively smaller in size and offers better initial capacity and better high-current discharge performance.