Cases of burning, or even exploding mobile phone and laptop batteries and spectacular product recalls, in which large quantities of energy (in one case, 1.6 million total since 2006 exceeding 10 million units) were exchanged, sensitized the public safety aspects of rechargeable Batteries. In contradiction to the often sensational media coverage that actually remained relatively brand from overheated Dell Inspiron 1525 battery but little damage occurred and the number of claims was generally small. When using high-performance rechargeable Dell Inspiron Mini 9 battery for motor vehicles with hybrid drive could it necessarily few in number to electric associations (see: Battery Packs) Connected Battery cells however, show catastrophic effects if they get out of control, and security considerations play there right to play a central role in the assessment of different Dell Inspiron 1720 battery technologies.
Intrinsic Safety
In this context, it is often the term 'inherent safety' (English: intrinsic safety) used, but in terms of the Batteries and Batteries not standardized, which is referred to different situations and different expectations are developed, particularly from the consumer.
A Standardization of the term is found in the so-called ATEX Directives (Explosion Protection Ordinance), relating to the ignition of explosive mixtures by electrical circuits and power sources. Furthermore, the concept appears such as standards and regulations for solar installations. None of these definitions is to apply to the safety of batteries or transferable.
The net safety of Dell GD761 battery is a design-related protection against thermal runaway (see below) to understand. Ideally, this means that no excessive heating, no emission of smoke, toxic fumes and flames and an explosion in short, deep discharge, overcharging, shock, drop, vibration, destruction and extreme temperatures and air pressures. Made up to a standardization of the term referred to the respective risk exclusions are to question exactly. Under no circumstances does 'intrinsically safe', that a cell is not dangerous or destructive safe and reliable in operation under all circumstances.
Thermal Runaway
The most significant exposure risk NiMH- And Li-Ion Batteries lies in the so-called thermal runaway (English: thermal runaway). Thermal runaway is present, if - for example by a short circuit - the accelerated exothermic in an accumulator heat generated (heat generating) electrochemical reactions so that in turn creates more heat and the heat released energy can not be removed in time. The consequence of such a chain reaction can be sudden and sharp rise in temperature, smoke and flames, and even an explosion.
The various electrochemical processes that can lead to thermal runaway are different type of DELL XPS M1530 battery. In some Li-ion cells may, for example deposited under unfavorable circumstances, metallic lithium. Sobald dieses seinen Schmelzpunkt erreicht (181° C), wird es au?erordentlich aggressiv und kann bei chemischen Reaktionen sehr viel Hitze freisetzen. Other factors the heat-induced release of oxygen or the ignition of flammable Electrolytes be.
As a causative trigger of a 'thermal runaway' such as short circuits are caused by external influences or changes within the cell into account, but also extreme deep discharge, overcharging, extreme operating temperatures, etc.