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Menampilkan postingan dari Mei, 2017

Application of lithium battery

Lithium battery and lithium ion battery is a development of process, lithium battery is a by lithium metal or lithium alloy for negative material of material, chemical reactions for oxidation restore reaction, SONY company invention has to carbon material for negative, to containing lithium of compounds as cathode of lithium battery, in charging and discharging process in the, no metal lithium exists, only lithium ion, this is lithium ion battery, this is a new of lithium battery. From the perspective of use, lithium batteries and lithium-ion batteries in the strict sense is different. Lithium metal used in lithium battery cathode, cathode with MnO2, and SOCl2 ,20 centuries 70 years after entering the practical, primarily used in some military and civilian small electrical appliances. Now, the lithium ion battery is used more widely. Ever since the advent of lithium-ion batteries, its outstanding performance contributed to this new type of lithium-ion batteries used in mobile phones, l…

Lithium-ion battery charger design requirements

Effect of lithium ion battery safety and effective charging voltage, current and temperature, so chargers to take care of a good control in the design of these three factors. In accordance with the above request, the charger IC active power path management, the power path management requirements in the load the load current/under unloaded conditions, real time adjustment of lithium-ion battery charging current, effective supervision and management in accordance with USB-IF current limit and soft activation function required by the specification. IC integration within the temperature monitoring function, if IC temperature exceeds the limit value, automatically reduces the charge current. Charger power adapter ensure that 5V DC power supply can charge pressure steady flow, if one has a current, maximum charging current can be set with an external resistor control to avoid USB overload. Charger also has captive power path management capabilities, when system-side electricity when they exc…

Lithium-ion batteries, redox flow batteries and lithium-ion capacitor

With electric vehicles and large battery systems for fixed position in family and social life of the growing popularity of rechargeable battery Ni-MH batteries lithium-ion batteries gradually after the completion of the transition, not only lithium battery research and development direction of a multipurpose development trend, but also the birth of the lithium ion capacitor and two new storage of redox flow battery technology. The following advantages and disadvantages of the three storage modes for comparison: 1. And lithium battery using lithium ion in plus or minus very between of back and forth embedded and off embedded for chemical reactions and work, so can combination into variety cathode material and negative material to achieved different of purpose, as high power type, and big capacity type, and resistance high temperature type, and long life type, different highlight performance of lithium battery, but while get straight or more items important parameter excellent of lithium…

18650 lithium ion battery technologies has weaknesses, beware of mobile power supply trouble

Including Apple products, including smart phones, Tablet by built-in lithium battery of the combustion and explosion for the same power-driven mobile power products are also full of wonder, consumers worried about power or it will become another source of this insecurity, and 18650 lithium-ion battery technologies that is one of its weaknesses.     As the world's most mature liquid lithium-ion technology battery types 18650 cylindrical lithium-ion battery or monomers form or in the form of batteries are widely used in mobile devices, in particular on tablets and Smartphones, but 18650 cell structure due to its characteristics, there are inevitably some shortcomings already reported above equipment explosion accident, are made 18650 Lithium-ion battery caused by short circuits: if used incorrectly or because the battery design problems of its own, will make lithium-ion batteries (Group), internal pressure is too large, in the case of pressure relief, the hard shell of the battery (s…