• 1.About the battery leakage problem

    Common leakage phenomenon: First, the sealing between the cover and the bottom groove is not good or due to collision, sealing glue cracking; The second,the safety valve acid leakage; The third,Acid leakage at three terminals; The fourth, Acid leakage occurs in other parts. WE HAVE 36 YEARS EXPERIENCE,ALL OF THESE PROBLEMS HAVE BEEN SOLVED.

  • 2.About the Irreversible sulfation problem

    Plate sulphuric acid is a common failure of battery, and many battery failures occur because of this failure. The main manifestations of plate sulfation are as follows: the voltage rises rapidly during charging, the gas precipitates prematurely, and the temperature rises quickly; When discharging, the voltage drops quickly and the capacity is small.

  • 3.About the bulging and deformed problem

    One, the battery has vulcanization or slight short circuit phenomenon, charging the battery heating, give the charger error signal, resulting in the occurrence of thermal runaway phenomenon, thus charging drum battery. Two, battery charging operation, especially in series battery pack, if the battery pack has been charged, if there is a bad quality of the battery will often appear internal gas compound poor phenomenon, resulting in bulging phenomenon. Three, the opening pressure of the safety valve is too high, or the safety valve is blocked. When the internal pressure increases to a certain extent, the valve cannot be opened normally, in this case is bound to cause the battery bulging deformation. Lead-acid batteries for electric vehicles (30AH) Four, because the lead-acid battery belongs to the liquid type design, the gas combination is reserved to avoid, and if there is a "rich liquid" phenomenon, it will block the diffuser to the negative electrode, reduce the negative electrode compound rate, the body pressure increases. Five, floating charging voltage is set too high, charging current is large, resulting in precipitation on the positive plate is accelerated, but not enough time in the negative electrode compound, at the same time the temperature of the battery body is also rising quickly, in the exhaust, pressure reaches a certain point, the battery bulging deformation.

  • 4.Voltage inconsistent, individual low

    1. Large self-discharge causes low voltage The large self-discharge of the cell makes its voltage drop faster than others. The voltage drop can be eliminated by storing the voltage after checking. 2. Charge imbalance causes low voltage When the battery is charged after detection, the charge of the cell is uneven due to the inconsistency of the contact resistance or the charge current of the detection cabinet. In short time storage (12 hours) measured voltage difference is very small, but long-term storage voltage difference is large, this low voltage has no quality problem, can be solved by charging. After being charged in production, it is stored for more than 24 hours to measure the voltage.

  • 5.About the battery explosion problem

    1. The overcharge explosion The protection line is out of control or the detection cabinet is out of control so that the charging voltage is greater than 5V, resulting in electrolyte decomposition, violent reaction inside the battery, rapid rise in the battery pressure, and battery explosion. 2. Over current explosion The protection line is out of control or the detection cabinet is out of control so that the charging current is too large to cause lithium ion embedment, and the lithium metal is formed on the surface of the pole piece, penetrating the diaphragm, and the positive and negative poles are directly short-circuited, causing an explosion (rarely).

  • 6.Expansion of lithium battery

    1. Lithium batteries expand when charged When charging lithium battery, lithium battery will naturally expand, but generally not more than 0.1mm, but overcharging will cause electrolyte decomposition, internal pressure increases, lithium battery expansion. 2. Expansion during processing Generally, there are processing abnormalities (such as short circuit, overheating, etc.) resulting in excessive internal heat electrolyte decomposition, lithium battery expansion.

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