By Gates Energy Products
Represents the 1st commonly to be had compendium of the data wanted by way of these layout execs answerable for utilizing rechargeable batteries. This instruction manual introduces the commonest sorts of rechargeable batteries, together with their historical past, the fundamental chemistry that governs their operation, and customary layout techniques. The advent additionally exposes reader to universal battery layout phrases and ideas. sections of the instruction manual offer functionality details on crucial varieties of rechargeable batteries more often than not present in patron and commercial items: sealed nickel-cadmium and sealed-lead cells. for every kind of cellphone, this publication covers discharge functionality, charging and charger layout, garage, existence, functions details, trying out, and security. New paperback variation of a best-seller. First widely-available publication on rechargeable cells. Operation, purposes, and trying out.
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Extra info for Rechargeable batteries applications handbook
In charging a sealed cell the positive electrode will reach full charge before the negative electrode. At this stage additional charging causes the positive electrode potential to rise until all the incoming current is oxidizing hydroxyl ions and generating oxygen gas at the positive electrode: 2OH- ~ 8902 + H20 + 2e- The oxygen generated at the positive electrode diffuses rapidly to the negative electrode where it is reduced back to hydroxyl ions: ~O2 + H20 + 2e- ~ 2OHThe hydroxyl ions complete the circuit by migrating back to the positive electrode.
These cells use a nickel positive electrode that is similar to those used on aerospace nickel-cadmium cells. The electrolyte is potassium hydroxide just as with the nickel-cadmium cells. But the negative electrode consists of gaseous hydrogen contained at high pressure. 318 volts) During overcharge oxygen generated at the nickel electrode and excess hydrogen recombine to form water using a platinum electrode to catalyze the recombination. The efficiency of this recombination process is one of the reasons that the nickelhydrogen cell is so tolerant of overcharge.
3C rate in four to five hours, generally without the need for charge controls. 3C rate. These batteries have the advantage of requiting less complicated charging circuits than fast-charge batteries. Fast-charge cells allow the user to recharge the battery in very short periods of time, normally within an hour. With this fast-charge capability, many cordless electric products may be used with little advance planning or preparation. Fast charging 36 Section 3 Sealed Nickel-Cadmium Cells and Batteries also permits the use of the full capacity of the battery several times a day, reducing the need for spares or larger batteries.