Battery pack
AssigneeSony Corporation
InventorsMasaki Hogari, Shuichiro Maekawa
Life of this patent
Estimating the term…
Abstract
A battery pack mounted to a predetermined apparatus to permit supply and output of power of a secondary battery cell between the battery pack and the apparatus, comprising: a plurality of field effect transistors for stopping charge or discharge current in response to a control signal; and a control circuit for controlling the charge or discharge current of the secondary battery cell by outputting control voltage for controlling the field effect transistors; wherein the control voltage is supplied to the respective gates of the plurality of field effect transistors through resistors of 10 [kΩ] or more.
Claims11
A circuit configured to couple a power source and a battery, said circuit comprising:
- a plurality of field effect transistors coupled in parallel and configured to be coupled between said battery and said power source;
- and
- a control circuit with an output coupled to the gate of each field effect transistor via a respective resistance of at least 10 kilo-ohms, said control circuit operatively configured to cause said field effect transistors to switch on and off as necessary to permit transfer of power between said power source and said battery.
A battery pack that transfers power between a secondary battery and an apparatus, said battery pack including a circuit comprising:
- a plurality of field effect transistors useful for switching either a discharge or a charge current through;
- a control circuit configured to generate a control signal useful for controlling switching of said field effect transistors;
- and
- a plurality of resistors through which said control signal is applied to gates of said field effect transistors,
- wherein,
- said field effect transistors are coupled in parallel with each other,
- said filed effect transistors are coupled between said battery and said apparatus,
- each field effect transistor is associated with a unique resistor, and
- each resistor has a resistance of at least 10 kilo-ohms.
Dependencies are inferred from the claim text.