bird PIEZO SYSTEMS, INC.
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PIEZOELECTRIC ENERGY HARVESTING KIT
Piezo Energy Harvesting Kit
Piezo Energy Harvesting System
Bender & Circuit.
Piezo Energy Harvester, Cantilever
Bender mounted as a cantilever.
Piezo Energy Harvester, Simple Beam
Bender mounted as a simple beam.
Print this Page: from © Piezo Systems, CATALOG #8 (2011),  pages 20 & 21. pdf icon


Part Number:
KEH-007
(Bender & Circuit)
Prices
ROHS:
Piezo Exempt. Product compliant.
Description: When a piezoceramic trandsucer is stressed mechanically by a force, its electrodes receive a charge that tends to counteract the imposed strain. This charge may be collected, stored and delivered to power electrical circuits or processors.

The Piezo Bending Generator
When the Energy Harvesting Bender is flexed, one layer is compressed while the other is stretched, resulting in power generation. It may be excited by intermittent pulses or continuously from low frequency to resonant frequency (where rated displacement is achieved at the lowest force level). The Energy Harvesting Bender is a pre-mounted and pre-wired Double Quick-Mount Bending Generator designed to attach easily to sources of mechanical strain. Its double ended design lends itself to being mounted either as a cantilever or a simple beam. Dimensions for the standard -503 size Double Quick-Mounts are shown below.

Piezo Energy Harvesting Circuit
The self powered Piezo Energy Harvesting Circuit collects intermittent or continuous energy input from the piezo generator and efficiently stores their associated energy in an on-board capacitor bank. During the charging process, the capacitor voltage is continuously monitored. When it reaches 5.2V the module output is enabled to supply power to an external (user) load. At this point 55 mJ of energy are available. When generator energy input is high, the output voltage remains ON continuously. Capacitor voltage is clamped at 6.8V. If external power demand exceeds generation, the output voltage decreases. When the output voltage drops to 3.1V, power to the load is switched OFF and is not turned on again until the capacitor bank has been recharged to 5.2V. The circuit accepts input voltages from 0V to ±500V AC or DC and input currents to 400 mA.

Piezo Energy Harvesting Kit
The Energy Harvesting Kit consists of one Double Quick-Mount Harvesting Bender and one Energy Harvesting Circuit.
See an Introduction to Benders Used as Sensor (Generator) Elements.
PIEZO BENDING GENERATOR PERFORMANCE Values to be used as guidelines
Part Number Weight
(grams)
 Stiffness 
(N/m)
Capacitance
(nF)
Parallel
Operation
Rated Tip
Deflection
(mmpeak)
Rated
Frequency
(Hz)
Open Circuit
Voltage
at rated
deflection.
Parallel
Operation
(Vpeak)
Closed Circuit
Current
per sinusoidal cycle,
at rated deflection.
Parallel Operation
(microApeak/Hz)
Rated
Output
Power
at rated
deflection
and
frequency
(mWrms)
EH220-A4-503YB 10.4 188 232 ± 2.6 52 ± 20.9 ± 57 7.1
Piezo Generator, Cantilever
Bending generator performance is based on the force being applied at the outermost tip of the mount.
ENVIRONMENTAL
  Operating Temperature Range
  -20 to 90° C
  ROHS
  Piezo exempt, Product compliant
BENDING GENERATOR DIMENSIONS
Piezo Generator Dimensions
ENERGY HARVESTING CIRCUIT SPECIFICATIONS     Values to be used as guidelines.
ELECTRICAL
  Maximum Instantaneous Input Voltage
  ± 500 V
  Maximum Instantaneous Input Current
  400 mA
  Maximum Input Power
  500 mW
  Minimum Charging Input (Power Dissipation)
  6.0 V @ 500nA (3µW)
  Internal Voltage Clamp

  7.0 V @ 10 nA
  Maximum Output Current
  1 Amp
  Operating Life Cycles
  Virtually unlimited
  Logic Compatibility
  CMOS
  Supply Voltage Thresholds
  VL = 3.1 V,      
  Useful Average Energy Output
  55 mJ
  Output On-Time Rating
  88 msec @ 150 mA
MECHANICAL
  Outline Dimensions
  2.0" Long   x   .55" Wide   x   0.7" High
  Mounting Holes
  .085" Diameter,   4 places
  Weight

  14 gram   (0.5 ounce)
  Input / Output Cables
  6"   J1 connector   /   6"   J2 connector
ENVIRONMENTAL
  Operating Temperature Range
  0 to 70° C
  Maximum Average Operating Temperature
  50° C
  Storage Temperature

  -40 to 85° C
  Humidity
  To 90%   (no condensation)
  Protection
  Conformal and epoxy coated
  ROHS
  Compliant
PRICING INFORMATION  - ENERGY HARVESTING,   USD each
NOTE: Choose "add to basket" to proceed to the shopping cart and select the quantity. Quantity pricing will be automatically calculated.
Part Number
Description
1 pc.
5 pcs.
25 pcs.
100 pcs.
KEH-007
Energy Harvesting Kit
$600
EH220-A4-503YB
Energy Harvesting Bender
$274
$197
$147
$120
EHC-601
Energy Harvesting Circuit
$384
$329
$263
$197
YOU MAY ALSO BE INTERESTED IN:
Other  Standard Piezo Bending Generators,  Standard Quick-Mount Bending Generators, and  Standard Double-Quick-Mount Bending Generators.
Or, other  Standard Piezo Extension Generators,  Standard Quick-Mount Extension Generators, and  Standard Double-Quick-Mount Extension Generators.

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