Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1996-04-26
1997-06-17
Wong, Peter S.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
338 3, 429 96, H02J 700, G01L 122, H01M 210
Patent
active
056400772
ABSTRACT:
Apparatus for recharging a battery includes a compartment for accommodating the battery in a manner such that its electrical terminals are in contact with a pair of electrodes. The electrodes are connectable to respective poles of a controllable source of electrical energy. A strain gauge is positioned so as to make contact with a wall of the battery when the battery is in place in the compartment. The strain gauge includes a foil which carries a resistive element, each of the two extremities of the resistive element being connected to an electrical device via a separate contact wire, whereby the coefficient of thermal expansion of the strain gauge is substantially equal to that of the wall of the battery. The material of one of the contact wires, at its juncture with the resistive element, has a different Seebeck coefficient to the material of the other contact wire at its juncture with the respective element. The battery temperature can be monitored by measuring the DC voltage difference between the contact wires, whereas the mechanical deformation of the battery can be monitored by measuring the AC impedance of the resistive element, both of which measurements are independently conducted using the electrical device.
REFERENCES:
patent: 3665756 (1972-05-01), Russell
patent: 3805601 (1974-04-01), Jeffers
patent: 4522067 (1985-06-01), Burger et al.
patent: 5260638 (1993-11-01), Hirahara
Gillissen Eduard E. A.
Hannen Gerardus E. M.
Van Beek Johann R. G. C. M.
Franzblau Bernard
Law Patrick B.
U.S. Philips Corporation
Wong Peter S.
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