Patents Assigned to Mathews Associates, Inc.
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Patent number: 7327122Abstract: A battery delivers its rated capacity when the battery is below a temperature when the available battery capacity is limited. The battery includes a heating element, a temperature sensor, and a switch operatively connected to the heating element and temperature sensor and responsive to the temperature sensor for switching on the heating element and raising the temperature of the battery to allow the battery to deliver its rated capacity when a sensed temperature of the battery is below a temperature where available battery capacity is limited.Type: GrantFiled: October 27, 2003Date of Patent: February 5, 2008Assignee: Mathews Associates, Inc.Inventor: Robert Kamenoff
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Publication number: 20060097699Abstract: A state of charge indicator includes a current sensing circuit for sensing and converting charge or discharge current of a battery into a bipolar voltage. A counter circuit counts battery charge. A charge/discharge circuit is operatively connected to the current sensing and counter circuits and detects the voltage polarity from the current sensing circuit and sets the counter circuit to a count mode with an up or down count for a respective charge or discharge. A reset circuit is operative with the current sensing circuit, counter circuit and charge/discharge circuit for resetting the counter circuit to an actual state-of-charge of the battery after delay when the battery is idle representative of a battery open circuit voltage.Type: ApplicationFiled: October 28, 2005Publication date: May 11, 2006Applicant: MATHEWS ASSOCIATES, INC.Inventor: Robert Kamenoff
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Publication number: 20060012342Abstract: A self-heating battery includes a battery, heating element operatively connected to the battery for heating the battery and a temperature sensor for determining the temperature of the battery. A switch is operatively connected to the heating element and temperature sensor and responsive to the temperature sensor for switching on the heating element and raising the temperature of the battery to allow the battery to deliver its rated capacity when a sensed temperature of the battery is below a temperature where available battery capacity is limited. A load sensing circuit is operative with the switch for sensing load demand and activating low or high heat modes.Type: ApplicationFiled: July 11, 2005Publication date: January 19, 2006Applicant: MATHEWS ASSOCIATES, INC.Inventor: Robert Kamenoff
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Publication number: 20050156578Abstract: A system and method for detecting a reversed battery cell within a battery pack includes battery cells connected together and forming a battery pack and battery output. A transistor circuit is operatively connected to the battery cells and operative for determining when a voltage condition occurs indicative of a reversed battery cell within the battery pack. An indication circuit is operatively connected to the transistor circuit for indicating a reversed battery cell in the battery pack.Type: ApplicationFiled: January 19, 2005Publication date: July 21, 2005Applicant: MATHEWS ASSOCIATES, INC.Inventor: Robert Kamenoff
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Patent number: 6900615Abstract: An apparatus and method for discharging a battery includes a battery discharge circuit contained within the battery that, when actuated, discharges the battery. A light sensing circuit is operatively connected to the battery discharge circuit and actuates the battery discharge circuit after exposing to light the light sensing circuit.Type: GrantFiled: June 2, 2003Date of Patent: May 31, 2005Assignee: Mathews Associates, Inc.Inventor: Robert Kamenoff
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Publication number: 20050017690Abstract: A battery delivers its rated capacity when the battery is below a temperature when the available battery capacity is limited. The battery includes a heating element, a temperature sensor, and a switch operatively connected to the heating element and temperature sensor and responsive to the temperature sensor for switching on the heating element and raising the temperature of the battery to allow the battery to deliver its rated capacity when a sensed temperature of the battery is below a temperature where available battery capacity is limited.Type: ApplicationFiled: October 27, 2003Publication date: January 27, 2005Applicant: MATHEWS ASSOCIATES, INC.Inventor: Robert Kamenoff
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Publication number: 20040012374Abstract: An apparatus and method for discharging a battery includes a battery discharge circuit contained within the battery that, when actuated, discharges the battery. A light sensing circuit is operatively connected to the battery discharge circuit and actuates the battery discharge circuit after exposing to light the light sensing circuit.Type: ApplicationFiled: June 2, 2003Publication date: January 22, 2004Applicant: MATHEWS ASSOCIATES, INC.Inventor: Robert Kamenoff