Electricity: battery or capacitor charging or discharging – Cell or battery charger structure – Having plug for a-c receptacle
Patent
1999-09-11
2000-08-15
Wong, Peter S.
Electricity: battery or capacitor charging or discharging
Cell or battery charger structure
Having plug for a-c receptacle
320107, H02J 702
Patent
active
061041629
ABSTRACT:
Method and apparatus for providing multi-power source for power tools. The apparatus includes (a) a multi-functional power block capable of being powered from multiple energy sources including, but not limited to, AC mains, DC power or fuel cell, and (b) a multi-functional battery module capable of receiving power from the multi-functional power block and fit into the recess in the tool which receives the power pack. The multi-functional power block includes an AC to DC converter, a voltage input selector, a DC to DC converter, an auto voltage selector, and a solid state power monitor which automatically sets the voltage and current to be delivered to power connectors integral to the multi-functional power block. The multi-functional battery module includes batteries, a battery charger which uses power from the multi-functional power block to recharge the battery, a power distributor, and a power monitor which monitors operation of the tool's motor so that the power distributor can automatically deliver the required voltage and current to the tool's motor from one or a combination of battery power and the multi-functional power block to produce the required operational driving torque. The apparatus also includes an AC mains plug and a first flexible line running from the AC mains plug to the multi-functional power block, a DC connector and a second flexible line running from the DC connector to the multi-functional power block, a third flexible line with attached DC plugs at both ends, and a series of adapters designed to fit into recesses in the multi-functional power block and in the tool.
REFERENCES:
patent: 5354215 (1994-10-01), Viracola
patent: 5510691 (1996-04-01), Palatov
patent: 5554896 (1996-09-01), Hogan
patent: 5780993 (1998-07-01), Tsang
patent: 5929597 (1999-07-01), Pfeifer et al.
patent: 6007373 (1999-12-01), Chew
Sainsbury Simon R.
Yilmaz Gursel G.
Luk Lawrence
Wong Peter S.
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