Study on the dendrite penetration of high rate batteries
The plates and separators of the high rate battery are relatively thin,with small spacing between the plates and high assembly pressure.At the same time,the battery adopts the container formation process.So after filling acid to the battery,most of the lead paste undergoes a sulfation reaction to produce lead sulfate,releasing a large amount of heat,causing a rapid increase in the internal temperature of the battery and a decrease in the density of sulfuric acid,all of which exacerbate the dissolution of lead sulfate.After charging the battery,it shows internal dendrite penetrating,causing the battery failure.To solve the problems in the production process mentioned above,the process of dipping the plate in acid and drying before assembling the battery is adopted,and meanwhile controlling temperature during the formation and charging process,which can effectively reduce the risk of battery dendrite short circuit.
high rate batteryhigh rate dischargedendrite penetrationdipping acid of plateformation temperature
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