Electrical contact array for harvesting power from a power circuit
View Patent ↗Circuitry and circuit elements allow harvesting of power. Some embodiments of the invention are circuits that include a contact array, with redundant external electrical contacts, providing a physical interface configured to extract power from a power source for an electronic device in contact with a larger underlying circuit without needing any alignment. The contact array includes a mesh.
1 . An electrical contact array for harvesting power from a power circuit, comprising
a plurality of external electrical contacts configured with redundancy such that the electrical contact array is capable of harvesting power from the power circuit when only some of the external electrical contacts make an electrical connection with the power circuit while some others of the external electrical contacts do not contact any power circuit, wherein the external electrical contacts are electrically exposed to an external environment of the electrical contact array;
a plurality of power collection diodes or transistors, at least one per external contact, configured to extract power from the power circuit;
signal pass-throughs;
a power output configured to output maximum and minimum voltages to which the external electrical contacts are exposed;
a mesh; and
electrically conductive grippers configured to bring electronic contacts from one side of the mesh to another side of the mesh.
2 . The electrical contact array of claim 1 , further comprising at least two diodes per contact that produce a rectified power signal when the contact is exposed to an external voltage trace.
3 . The electrical contact array of claim 1 , made from thin film semiconductors.
4 . The electrical contact array of claim 1 , wherein the electrical contact array is rigid.
5 . The electrical contact array of claim 1 , wherein the electrical contact array is flexible.
6 . The electrical contact array of claim 1 , wherein the external electrical contacts are spring contacts.
7 . The electrical contact array of claim 1 , wherein the electrical contact array is part of a human computer interaction (HCI) device.
8 . The electrical contact array of claim 1 , wherein the electrically conductive grippers are arranged as arrays of redundant grippers.
9 . The electrical contact array of claim 1 , further comprising fabric carriers, wherein the plurality of external electrical contacts comprise micromechanical grippers mechanically entangled with the fabric carriers.
10 . The electrical contact array of claim 1 , wherein the electrical contact array is configured to be exposed to a voltage of 5V.
11 . The electrical contact array of claim 5 , wherein the electrical contact array is stretchable.
12 . The electrical contact array of claim 9 , wherein the micromechanical grippers each comprise a thin film strain-mismatched bilayer.
13 . The electrical contact array of claim 11 , wherein the electrical contact array is conformal.
14 . An electrical contact array for harvesting power from a power circuit, comprising
a plurality of external electrical contacts configured with redundancy such that the electrical contact array is capable of harvesting power from the power circuit when only some of the external electrical contacts make an electrical connection with the power circuit while some others of the external electrical contacts do not contact any power circuit, wherein the external electrical contacts are electrically exposed to an external environment of the electrical contact array; and
a plurality of power collection diodes or transistors, at least one per external contact, configured to extract power from the power circuit;
a mesh; and
electrically conductive grippers configured to bring electronic contacts from one side of the mesh to another side of the mesh.
15 . The electrical contact array of claim 14 , further comprising
signal pass-throughs; and
a power output configured to output voltages.