Battery having a transistor switch for supplying energy

• US 5,363,030 A
• Filed: 09/09/1993
• Issued: 11/08/1994
• Est. Priority Date: 09/16/1991
• Status: Expired due to Fees

• Current Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Ford, Robert B., Badie, Mehrdad
• Primary Examiner(s): Eisenzopf, Reinhard J.
• Assistant Examiner(s): SOBUTKA, PHILIP
• Application Number:
  US08/119,447
• Time in Patent Office: 425 Days
• Field of Search: 455/343, 455/89, 455/127, 455/68, 455/92, 320/13, 320/10, 320/54
• US Class Current: 320/127
• CPC Class Codes: H01M 10/44 Methods for charging or discharging circuits for charging H02J7/00
• CPC Class Codes: H01M 50/574 Devices or arrangements for the interruption of current
• CPC Class Codes: H02J 7/00036 Charger exchanging data with battery
• CPC Class Codes: H02J 7/00047 with provisions for charging different types of batteries
• CPC Class Codes: H02J 7/0063 with circuits adapted for supplying loads from the battery
• CPC Class Codes: H02J 9/061 for DC powered loads
• CPC Class Codes: H04B 1/3883 Arrangements for mounting batteries or battery chargers
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

Supply of energy to a radio device (220) as provided by a battery pack (210) is remotely controlled by coupling a transistor switch (213) between an energy source (212) within the battery pack (210) and battery terminals (222 and 224). The transistor switch (213) is controlled by a control signal (238) which is applied to the battery (210) through a control terminal (217) disposed on the battery.

Claims

1. A battery pack for use with other devices, comprising:

an energy source for supplying energy to a device through energy source output terminals;

battery terminals for coupling said device to said energy source;

a transistor switch coupled between said energy source output terminals and at least one battery terminal for selectively controlling supply of energy to at least one of said battery terminals in response to an external control signal;

a control terminal for coupling said external control signal to said transistor switch wherein said control signal is generated by having said control terminal coupled to at least on of the energy source output terminals so as to control the supply of energy.

2. The battery pack of claim 1, wherein said transistor switch comprises a field effect transistor having a gate coupled to said control terminal.