US 9,883,603 B2 · Electronic pull tab for battery protection

Abstract

A battery powered device is configured to allow the device to be stored for extended periods of time with a lithium battery installed and operable. An electronic switch is coupled between the battery and processing logic of the device and is biased off to block all current flow to the processing logic while the device is in a storage state. A user may perform a simple action to overcome the bias such that the electronic switch is turned on and allows current to flow to the processing logic in an operational state. Later, the user may perform another simple action to restore the bias such that the electronic switch is turned off to return the device to the storage state in which essentially no current is drained from the battery.

Claims16

Dependent claims

A battery powered device, comprising:

a battery positioned within a housing of the device;
processing logic configured to perform functions of the device;
an electronic switch coupled between the battery and the processing logic;
a bias circuit coupled to the electronic switch, wherein the bias circuit is configured to hold the electronic switch off to block current flow from the battery while the device is in a storage state;
and
an override circuit coupled to the bias circuit and to a start signal generated by an ON switch, wherein the override circuit is configured to override the bias circuit in response to activation of the start signal such that the electronic switch is turned on and allows current to flow to the processing logic in an operational state.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

14/281,298Filed 19 May 2014 · us provisional application

Priority

16 Jul 2013

Published

US 2015/0022956 A122 Jan 2015

Granted

30 Jan 2018

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

H02J 9/002
Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting: in which a reserve is maintained in an energy source by…
H05K 7/00
Constructional details common to different types of electric apparatus
H02J 7/855
Circuit arrangements for charging or discharging batteries or for supplying loads from batteries: with circuits adapted for supplying loads from…
H02J 7/933
Regulation of charging or discharging current or voltage: the cycle being controlled or terminated in response to electric parameters

Electronic pull tab for battery protection

Life of this patent

Electronic pull tab for battery protection

Life of this patent

Abstract

Claims16