Panasonic HHR160A Manuel d'utilisateur télécharger pdf

August 2000

NICKEL METAL HYDRIDE HANDBOOK, PAGE

Overview

As electronic products have come to feature more

sophisticated functions, more compact sizes and

lighter weights, the sources of power that operate

these products have been required to deliver in-

creasingly higher levels of energy. To meet this

requirement, nickel-metal hydride batteries have

been developed and manufactured with nickel hydro-

xide for the positive electrode and hydrogen-absorb-

ing alloys, capable of absorbing and releasing hydro-

gen at high-density levels, for the negative electrode.

Because Ni-MH batteries have about twice the

energy density of Ni-Cd batteries and a similar

operating voltage as that of Ni-Cd batteries, they are

expected to become a mainstay in the next genera-

tion of rechargeable batteries.

NICKEL METAL HYDRIDE BATTERIES

Construction

Nickel-metal hydride batteries consist of a positive

plate containing nickel hydroxide as its principal active

material, a negative plate mainly composed of hydro-

gen-absorbing alloys, a separator made of fine fibers,

an alkaline electrolyte, a metal case and a sealing

plate provided with a self-resealing safety vent. Their

basic structure is identical to that of Ni-Cd batteries.

With cylindrical nickel-metal hydride batteries, the

positive and negative plates are seperated by the

separator, wound into a coil, inserted into the case,

and sealed by the sealing plate through an electrically

insulated gasket.

With prismatic nickel-metal hydride batteries, the

positive and negative plates are sandwiched together

in layers with separators between them, inserted into

the case, and sealed by the sealing plate.

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Résumé du contenu

Page 1 - Construction

August 2000NICKEL METAL HYDRIDE HANDBOOK, PAGE 7OverviewAs electronic products have come to feature moresophisticated functions, more compact sizes an

Page 2 - Involved in Batteries

August 2000NICKEL METAL HYDRIDE HANDBOOK, PAGE 8Structure of Nickel Metal Hydride BatteriesPrinciple of Electrochemical Reaction Involved in Batteries

Page 3 - Features

August 2000NICKEL METAL HYDRIDE HANDBOOK, PAGE 9The hydrogen-absorbing alloy negative electrodesuccessfully reduces the gaseous oxygen given offfrom t

Page 4 - Five Main Characteristics

August 2000NICKEL METAL HYDRIDE HANDBOOK, PAGE 10NICKEL METAL HYDRIDE BATTERIES - CONTINUEDFive Main CharacteristicsAs with Ni-Cd batteries, nickel-me

Page 5 - Cycle Life Characteristics

August 2000NICKEL METAL HYDRIDE HANDBOOK, PAGE 11•Discharge temperature characteristics at 1C discharge• Discharge temperature characteristicsStorage