Electric Vehicle Bottle Repair Technology - Failure and Maintenance Course of Battery "Serial 4-2"

Serial 1 [] battery deformation, failure reasons: the battery is not deformed burst, there is often a process. Charging the battery to 80% capacity of the high voltage into the charging region. Battery technology repair case, the first oxygen evolution in the positive electrode, oxygen gas through the holes in the separator, reach the anode. Resurrection oxygen reaction in the negative electrode plate: 2Pb + O2 = 2PbO + heat PbO + H2SO4 = PbSO4 + H2O + heat of reaction generates heat. Bothater repair technology When the charging capacity reaches 90%, the rate of oxygen is increased, and hydrogen is generated by the negative electrode. A substantial increase in gas safety valve to open the battery, the gas escapes, the final performance of dehydration. 2H2O = H2é + O2é battery increases as the number of cycles, the moisture gradually reduced. The technical result battery repair battery case appears as follows: (1) oxygen "channel" becomes clear, oxygen is easily generated from the positive through the "channel" to the negative. Lithium repair technique (2) the heat capacity is reduced, the maximum heat capacity in the battery is water. After the loss of water, greatly reduce the heat capacity of the battery, the heat generated by the battery temperature rises rapidly. Lead-acid battery repair (3) Since fine glass fiber battery separator shrinkage occurs after the loss, so that the adhesion of the positive and negative plates is deteriorated, the internal resistance increases, the charge-discharge process heat is increased. Through the above process, the heat generated inside the battery only after cooling the battery slot. The technical training battery repair heat dissipation is less than the temperature rise appears, so that the battery voltage decreased gassing, increased gas analysis, positive large amount of oxygen through the "channel", the surface of the negative reaction, emit large amounts of heat and the temperature rises quickly. Leads to a vicious cycle of "thermal runaway", deformed. Read more

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