fault I: plate curing
failure
generate a negative plate features a white coarse grains PbSO4, good plate blue black, normal charging can not be transformed into the phenomenon of PbO2 and Pb
(1) curing the battery discharge, the voltage decreased rapidly reduced premature termination voltage, battery capacity decreases. Charging is slow to respond or not respond. Voltage rises rapidly, but the capacity increase is very slow. Proportion of lower than normal, and long-term low.
(2) when the single-cell battery charging voltage rises too fast, rapid increase in temperature of electrolyte, but the density increases slowly, premature bubble, bubble, or even a charge there.
it
barrier
original
because (1) lack of battery charge or discharge a long time without charging, resulting in some very board PbSO4 dissolved in the electrolyte, the higher the temperature,
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(2) liquid electrolyte is too low, so that the upper plate was in contact with air oxidation,
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(3) long-term excessive depth of discharge or low current discharge, the electrode active material deep within the pores generated PbSO4.
(4) the beginning of a new battery charging is not complete, active substances have not been fully restored.
(5) electrolyte density is too high, impure elements, external temperature changes dramatically.
failure II: active material shedding
failure
The main features of correction
plates shedding PbO2 active substances. Positive plate grayish brown hair, a good red-brown plate. Charging reaction was,
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it
barrier
original
because (1) battery charging current is too large, the electrolyte temperature is too high, the expansion of active material,
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(2) often overcharge the battery, a large number of gas escaping plate pores, pore pressure in the plate, leaving the active material shedding.
(3) are often low-current discharge to plate bending, leading to active material shedding.
(4) electrolyte impurities, when the electrolyte composition containing nitric acid when the acceleration plate active material shedding.
(5) car driving in the rough vibration.
Failure three: the plate grid corrosion
fault planes
characteristics of aircraft is mainly positive grid corrosion, the plate was decomposed state, the massive accumulation of active substances in the separator between the battery output capacity reduced.
it
barrier
original
because (1) often overcharge the battery, positive plate at the O2 produced by oxidation of the gate frame.
(2) the electrolyte density, temperature, charge time is too long,
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(3) electrolyte impurities.
(4) low-current discharge
failure IV: short-circuit plate
failure
characteristics of the battery positive and negative plates in direct contact or other conductive materials known as plate lap short.
(1) open circuit voltage is low,
tory burch nyc, closed-circuit voltage (discharge) quickly reached the termination voltage.
(2) high current discharge, the terminal voltage decreased rapidly to zero.
(3) open, the electrolyte density is low, the electrolyte at low temperatures occur in the ice phenomenon.
(4) charging, the voltage rises very slowly, and always maintain the low (sometimes zero). Very fast rise in electrolyte temperature, electrolyte density increased very slowly or almost no change, the electrolyte density decreased to 1.15 below does not take charge or take gas bubbles appear late.
it
barrier
original
because (1) poor quality or missing partitions, so that through the plate active material, resulting in positive and negative plates of the virtual contact or direct contact.
(2) resulted in positive and negative plate separator connected channeling bit.
(3) expansion of active material off the plates, due to excessive shedding of active material deposited, resulting in positive and negative plates with the lower edge or side edge of the sediments caused by contact between positive and negative plate connected.
(4) causing conductive objects into the battery positive and negative plate connected.
(5) are formed when welding very group,
(6) generate short dendrites plate
fault Five: Self-discharge
failure
features battery in no load conditions, the phenomenon known as electricity automatically disappear from the discharge.
If the battery is fully charged within 30 days for each day and night, more than 2% capacity reduction, known as the failure of the self-discharge
it
barrier
original
because (1) electrolyte impure, impure battery plate material, impurities and the plate attached to the pole and between the sink board potential difference between the different impurities,
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(2) long-term storage batteries, sulfuric acid sink, so that the plates, the potential difference caused by the lower self-discharge.
(3) accumulate in the battery electrolyte spill the surface of the battery cover, so that positive and negative column formation pathway.
(4) electrode active material shedding, excessive sediment to the lower plate short circuit.
failure VI: Single-cell battery polarity reversal
failure
features the original single-cell battery positive plate into a negative plate, negative plate becomes positive plate. At this time, the rapid decline in battery voltage, capacity decreased, can not be used.
abnormal color plates, very serious anti-active materials will lead off and plate bending
failure
reason not to discover the defective single-cell battery (such as plate short, active material loss, etc.), when the battery discharges, the single-cell battery capacity is small because, first of all discharges to zero, and then continue to discharge, other single- cell battery discharge current to charge it, so the polarity reversed.
charging reverse
fault line seven: contraction of the negative plate active material
failure
feature negative plate atrophy.
decrease battery capacity fault
frequent cause of over discharge the battery, causing the battery negative plates of lead hardened
failure cavernous eight: partition corrupted
failure
Features short-circuit fault occurs
battery failure
electrolyte temperature is too high because
battery usage time is too long and natural damage
failure IX: reduced electrolyte
failure
feature increased battery internal resistance, voltage and capacity reduction.
electrolyte battery plates exposed surface, the negative plate is oxidized to harden, after adding the electrolyte, the plate hardening does not change, a white layer.
failure
reasons (1) battery casing for cracks.
(2) the battery temperature is too high, a large number of evaporation of moisture,
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(3) charge current is too large or too charged for a long time, resulting in a strong gas evolution.
Ten
failure: increased battery internal resistance
failure
features (1) low voltage and voltage drops rapidly.
(2) charging voltage, charging the electrolyte temperature rises quickly.
failure
reasons (1) poor quality of welding plate group, there are cold solder joint, or the piles and connected the battery bar very bad welding.
(2) plate curing more serious, so that the battery internal resistance increased.
fault XI: cold battery
failure
features (1) ice marks the upper electrolyte.
(2) shorten battery life.
failure
reasons (1) in the low temperature environment, there is no timely charge after the battery discharge.
(2) batteries in the manufacturing process, the negative plate does not dry out.
fault XII: Joint Damage Article
failure
features (1) current suddenly disappeared.
(2) spark hit
failure
reasons (1), together pile article and the very poor quality weld between, there are cold solder joint, caused by the use of sealing off a period of time, resulting in the circuit barrier
(2) removable battery and accidentally firing the battery ground connection, or connected to the positive and negative moments, resulting in an external short-circuit the battery, blow the joint bar
fault thirteen: the battery performance can not be restored by charging
failure
features battery charging, its voltage and capacity can not be restored to its original value, and the obvious decline in trouble
reasons (1) due to excessive discharge, lead sulfate plate generated deep and difficult recovery charge
(2) due to overcharge, or because the manufacturing process lead paste coating uneven, resulting in plate deformation, causing active material shedding
(3) long-term use in a semi-charged state, the battery plate curing
(4) electrolyte impurities, impurities resulting from the discharge
fault fourth: Batteries that there is no equilibrium
failure
Series batteries feature the equilibrium is a worldwide problem, there is always the course of
failure
reasons are many and varied reasons, there are production reasons, there are reasons for and the use of raw materials and other reasons.
fault-fifth: The battery charge does not get power
failure
electrical characteristics of the battery charge does not go
failure
reasons are many and varied reasons, the charging circuit connection is reliable, whether inside the battery dry phenomenon, that the battery is a serious lack of fluid, the existence of irreversible sulfation.
fault XVI: Battery thermal runaway
failure
Characteristics of the battery charging process
serious fever, shell deformation
it
barrier
original
because 1) the oxygen
2) heat capacity decreased, the heat capacity of the battery is the biggest water, water loss, heat capacity of the battery greatly reduced the heat generated by the battery temperature increases rapidly.
3) After the water loss in the ultra-fine glass fiber battery separator shrinkage occurs, so that the adhesion of positive and negative plate variation, the resistance increases, the charge-discharge process heat increased. After the above process, the heat generated inside the battery only after the battery slot cooling, such as the heat is less than heat, that is, the phenomenon of the temperature rise. Increase in temperature, so that the battery gassing overpotential lower gas analysis increases, the positive number of oxygen through the . The final temperature above 80 ℃, the deformation occurred.
Seventeen
failure: battery leakage
failure
features battery leakage
it
barrier
original
bottom slot for one seal between the cover and poor or due to collision, sealed plastic cracking cause leakage;
Second, the valve cap infiltration
acid leakage;
third terminal at the seepage acid leakage;
Fourth, other parts of the seepage acid leakage occurs.
tory burch nyc Storage Battery failure
Linear Mode
