Capacitor powered battery replacement device

Patent metadata

Field	Value
Publication number	US-9833223-B2
Application number	US-201514838072-A
Country	US
Kind code	B2
Filing date	Aug 27, 2015
Priority date	Oct 14, 2011
Publication date	Dec 5, 2017
Grant date	Dec 5, 2017

Abstract

A handheld device includes an electronic instrument and a capacitive power supply for storing and delivering power to the electronic instrument. The capacitive power supply includes at least one capacitor, and an electronic circuit operable to boost a voltage from the capacitor to a higher voltage for use by the electronic instrument. The capacitive power supply can be rapidly recharged. Some configurations include an accelerometer which permits the handheld device to detect movement and perform various operations responsive to detected movement. A dual charging station is also disclosed.

First claim

What is claimed is:

1. A battery replacement device comprising:
a packaging including at least a positive terminal and a negative terminal, the packing having a size and shape of at least one battery;
at least one capacitor disposed in the packaging; and
a mimic circuit electrically coupled to receive power from the at least one capacitor and deliver the power to at least one of the positive and negative terminals, wherein the mimic circuit changes an output characteristic of the at least one capacitor into an output characteristic of the battery, the mimic circuit comprising:
a capacitor characteristic detector that evaluates a first characteristic of the at least one capacitor, comprising an analog to digital converter that detects an output voltage from the at least one capacitor;
a characteristic converter that converts the first characteristic into a second different characteristic, the characteristic converter comprising a processing device that utilizes a lookup table to determine the second different characteristic based on the first characteristic of the at least one capacitor; and
output circuitry configured to generate the second different characteristic from the first characteristic, wherein the output circuitry further comprises:
a digital to analog converter that receives a digital signal from the processing device and generates an output voltage; and
a power amplifier that generates an amplified output at the output voltage to power an electronic device.

2. The battery replacement device of claim 1 , wherein the output characteristic is a discharge characteristic.

3. The battery replacement device of claim 2 , wherein the discharge characteristic is an output voltage associated with a percentage of a capacity of the capacitor that has been discharged.

4. The battery replacement device of claim 1 , wherein the at least one capacitor is one or more super capacitors.

5. The battery replacement device of claim 1 , wherein the packaging has the size and shape of one of: AAA, AA, C, or D type battery.

Assignees

• Welch Allyn Inc

Inventors

• Wood Robert J
• Salvati Jon R
• Curry Michael
• Mcmahon Michael T
• Slawson Steven R

Classifications

• H02J2105/44

  Portable electronic devices · CPC title

• H02J4/25

  for transfer of electric power between AC and DC networks, e.g. for supplying the DC section within a load from an AC mains system · CPC title

• H02J7/731

  specially adapted for holding portable devices containing batteries (H02J7/751 takes precedence) · CPC title

• H02J7/445

  in response to measured battery parameters, e.g. voltage, current or temperature profile · CPC title

• H02J7/70

  characterised by the mechanical construction · CPC title