Composite battery pack of power tool

• US 20070243424A1
• Filed: 07/10/2006
• Published: 10/18/2007
• Est. Priority Date: 04/14/2006
• Status: Abandoned Application

• Current Assignee: Apogee Power Incorporated
• Original Assignee: Apogee Power Incorporated
• Inventors: Tsai, Keh-Chi, Bell, Gregory R., Lawson, James M., Lin, Wen-Hen
• Application Number:
  US11/483,012
• Publication Number:
  US 20070243424A1
• Time in Patent Office: Days
• US Class Current: 429/7
• CPC Class Codes: H01G 11/08 Structural combinations, e.g. assembly or connection, of hybrid or EDL capacitors with other electric components, at least one hybrid or EDL capacitor being the main component
• CPC Class Codes: H01G 11/30 characterised by their material
• CPC Class Codes: H01G 9/28 Structural combinations of electrolytic capacitors, rectifiers, detectors, switching devices with other electric components not covered by this subclass
• CPC Class Codes: H01M 10/0525 Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
• CPC Class Codes: H01M 10/0565 Polymeric materials, e.g. gel-type or solid-type
• CPC Class Codes: H01M 10/30 Nickel accumulators H01M10/34 takes precedence
• CPC Class Codes: H01M 10/345 Gastight metal hydride accumulators
• CPC Class Codes: H01M 10/425 Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing printed circuits H05K1/00
• CPC Class Codes: H01M 10/4264 with capacitors
• CPC Class Codes: H01M 16/003 of fuel cells with other electrochemical devices, e.g. capacitors, electrolysers
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02E 60/13 Energy storage using capacitors
• CPC Class Codes: Y02E 60/50 Fuel cells

Abstract

A composite battery set of a power tool, comprising a battery, a non-polarity ultracapacitor, a switch, a motor, etc. The ultracapacitor is a non-polarity ultracapacitor, and the power released by the fully charged battery at a high discharge rate is utilized to drive a motor. As such, a switch is used to switch and connect the non-polarity ultracapacitor to the different polarities of the motor, thus achieving the switching of the rotation directions of the motor.

Claims

1. A composite battery set of a power tool, used to provide a power required for driving a motor of said power tool, comprising:

at least one battery, used to provide said power to said motor;

at least one protective circuit module, series-connected to said battery to form a series-connected set, and is used to prevent the damage of said battery; and

at least one ultracapacitor, parallel-connected to said series-connected set and said motor;

wherein said power tool includes a switch, which is used to switch and connect electrically said composite battery set of said power tool to the different polarities of said motor, thus switching the rotation directions of said motor.

2. The composite battery set of a power tool as claimed in claim 1, wherein said battery includes at least one Li-ion battery.

3. The composite battery set of a power tool as claimed in claim 1, wherein said battery includes at least one Li-polymer battery.

4. The composite battery set of a power tool as claimed in claim 1, wherein said ultracapacitor includes at least one metal-ceramic ruthenium-oxide ultracapacitor.

5. The composite battery set of a power tool as claimed in claim 1, wherein said ultracapacitor includes at least one nitride ultracapacitor.