生活小技巧,电动车电池夏季防护秘诀（Tips for life, electric cars, batteries, summer protection）.doc

生活小技巧,电动车电池夏季防护秘诀（Tips for life, electric cars, batteries, summer protection） I. causes of battery bulging The drum is due to battery charging the battery into the battery into the thermal runaway state, thermal runaway state is due to the charging current is too large or the battery after a certain period of time, the battery caused by sulfuration resistance increases, the temperature will rise in the current battery under the effect of increased resistance after charging, the temperature rise will make the current increasing further, thus formed the vicious spiral, the inner pressure, finally deform the battery. The main reason for the battery lifting is the runaway heat of the storage battery and the runaway of the internal circuit of the charger. (1) the thermal runaway of the battery causes the battery to blow up Thermal runaway refers to the accumulator when charging, the current and battery temperature has an accumulation of reinforcing effect, and gradually damaged. Lead-acid battery, severe water loss after curing, the internal resistance of the battery is increased, the amount will lead to heat the battery during charging and discharging of the battery increases, the gassing overpotential decreases, gas evolution increases, a large amount of oxygen cathode precipitation through the internal channel in the cathode surface reaction, and give off a lot of heat, and the battery a large number of temperature rise, forming a vicious spiral out of control, this is the heat of lead-acid battery . When the internal temperature of the hot runaway lead-acid battery reaches or exceeds the softening temperature (thermal deformation temperature) of its plastic shell material, the battery will produce thermal deformation and the battery will bulge. In summer, the external temperature is high, which accelerates the electrochemical reaction rate of the battery and accelerates the heating of the battery. It is more likely to cause thermal runaway and cause the battery to bu