Damage the battery
Damage the battery
Damage the battery
(2) Unloading operations are in the first two specific time periods, the starting time of only 97A @ h battery voltage 1.700V, while the total voltage> 170.00V (power supplies continue to meet at that time), the end times the total voltage = 170.00V Discharge (battery end of time).
In this particular time of the battery 97A @ h run in the state against the landfill, and the remaining 99 h Hp laptop battery Battery 100A is still pending in the range safe.
Both the objective existence of a special period of time is bound to have the following questions, namely,
(1) the real difference between the system and in this case is simply the difference in size of capacity, while the ability of the size difference is only a time to change the length, does not the existence of a particular time; this case, the task battery, without exception, it is indeed the inherent security risks, shows the damage the battery and battery incidents intrinsic relationship between inevitable.
(2) good equipment, precise control and can not prevent cell damage occurs, but this overcharging and over discharge to be covered by all operations safely, quantitative terms, the proportion of only 1% of the damage, injury time less than 3%.
(3), of course, an injury rate of 1% or 3% of the damage is not enough time on the emergency power system for security threat, at best, a micro-injury, but as long as the emergency power system were repeated charge and discharge,HP Pavilion DV4000 Battery(hp dv4000 battery) , HP Pavilion ZE2000 Battery(hp ze2000 battery), HP Presario M2000 Battery(compaq m2000 battery), will be repeated micro-injury. In other words, full of micro-damage process of the current system of backup power in the whole process.
(4) The origin of differences of micro-lesions in the parameters of the cell, a micro-lesions of the original structure of the consequences of damage to the battery and storage capacity to decline, which will further increase the differences between individual cells, this may be the next cause micro-injury, it is clear that there is a vicious circle of mutual causality, one can reasonably infer that the consequences of cell damage in a second process of micro-damage deepening to the extension of the battery is fully valid failure time process may change as the operating conditions change, HP Presario M2000 Battery but there must be injured several times until after the failure of the worsening the situation, the inevitable result.
1.4 Fracture mechanics model of the analog
To understand the image of the field is the electric heater caused by the sudden rupture of a mechanism for micro-mechanical damage of the fields can be used to make a simple fracture model of analogy: a battery, like a mechanical plate spring (spring);
The parameters of each battery cell group differences, similar to the heterogeneity in the section of Spring;
battery charge and discharge of the average, similar to spring load to full load;
Monomer charge and discharge voltage and discharge voltage limit of the ratio of the cross section of a leaf spring similar to the actual load and limit load factor compared to the overload.
In this way, the battery in the local load and discharge, similar to the spring at full load loading local load (ie, stress concentrations)
The local overcharging and over discharging caused by micro injury, HP Pavilion ZE2000 Battery similar to the source under partial overload micro cracks;
Batteries superimposed successive injuries, similar to the fracture in the gradual expansion of leaf springs wounded
Finally, because the only battery failure caused by a sudden failure, similar to micro-cracks gradually extend the lead to sudden rupture of the spring.
Overall, the above analogy reflects the sudden failure of the battery must be classified as "fault" model, while the lack of proper training early warning system, the battery of this type of breakdown time " presence of failure, with the spring time of the event as a sharp break with the unpredictability.
2 Damage Remains
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