Circuits for flexible structures
Some aspects of this disclosure generally are related to improving the robustness of a flexible circuit structure, for example, by providing fault-tolerant electrical pathways for flow of electric current through the flexible circuit structure. In some embodiments, such fault tolerance is enhanced by way of a conductive mesh provided between an adjacent pair of resistive elements. Some aspects are related to improved voltage, current, or voltage and current measurement associated with various pairs of adjacent resistive elements at least when the various pairs have differing distances between them.
1. A flexible circuit structure comprising:
at least one nonconductive flexible layer comprising an electrically insulative material; and
one or more conductive flexible circuit layers proximate the at least one nonconductive flexible layer, the one or more conductive flexible circuit layers comprising an electrically conductive material, wherein the one or more conductive flexible circuit layers comprises or comprise:
a plurality of electrical loads electrically connected in series; and
a plurality of electrical-load-measurement leads, each electrically connected to at least one of the plurality of electrical loads,
wherein a first pair of leads of the plurality of electrical-load-measurement leads is positioned to sense voltage across, or current flowing through, a first electrical load of the plurality of electrical loads,
wherein a second pair of leads of the plurality of electrical-load-measurement leads is positioned to sense voltage across, or current flowing through, a second electrical load of the plurality of electrical loads,
wherein a third pair of leads of the plurality of electrical-load-measurement leads is positioned to sense voltage across, or current flowing through a third electrical load of the plurality of electrical loads,
wherein the first electrical load is adjacent the second electrical load in the series,
wherein the second electrical load and the third electrical load are adjacent in the series,
wherein the first pair of leads and the second pair of leads share a same one of the plurality of electrical-load-measurement leads, and
wherein the second pair of leads does not share any of the plurality of electrical-load-measurement leads with the third pair of leads.
2. The flexible circuit structure of claim 1 , wherein a distance spanning the first electrical load and the second electrical load is different than a distance spanning the second electrical load and the third electrical load.
3. The flexible circuit structure of claim 1 , wherein a distance spanning the second electrical load and the third electrical load is greater than a distance spanning the first electrical load and the second electrical load.
4. The flexible circuit structure of claim 1 , wherein an electrical resistance of a portion of the flexible circuit structure that serially electrically connects the first electrical load to the second electrical load is different than an electrical resistance of a portion of the flexible circuit structure that serially electrically connects the second electrical load to the third electrical load.
5. The flexible circuit structure of claim 1 , wherein an electrical resistance of a portion of the flexible circuit structure that serially electrically connects the second electrical load to the third electrical load is greater than an electrical resistance of a portion of the flexible circuit structure that serially electrically connects the first electrical load to the second electrical load.
6. The flexible circuit structure of claim 1 , further comprising a plurality of electrical-connection-arrangements, each electrical-connection-arrangement electrically connecting a respective adjacent pair of electrical loads of the plurality of electrical loads, each of at least some of the plurality of electrical-connection-arrangements comprising a set of one or more conductive meshes, each conductive mesh including a plurality of conductive segments spatially arranged to provide a plurality of electrical pathways defining a respective portion of an electric current flow path, the respective portion of the electric current flow path located between the electrical loads of the respective adjacent pair of electrical loads, and each conductive segment of the plurality of conductive segments providing a respective portion of the plurality of electrical pathways.
7. The flexible circuit structure of claim 6 , wherein each conductive mesh is directly connected to a respective one or more of the plurality of measurement leads.
8. The flexible circuit structure of claim 6 , wherein a first electrical-connection-arrangement of the at least some of the plurality of electrical-connection-arrangements electrically connects the first electrical load and the second electrical load, and a second electrical-connection-arrangement of the at least some of the plurality of electrical-connection-arrangements electrically connects the second electrical load and the third electrical load, and wherein a total of the conductive meshes comprised by the second electrical-connection-arrangement is greater than a total of the conductive meshes comprised by the first electrical-connection-arrangement.
9. The flexible circuit structure of claim 1 , wherein the at least one nonconductive flexible layer comprises a plurality of electrically nonconductive flexible layers, and the one or more conductive flexible circuit layers comprises a plurality of conductive flexible circuit layers that are interleaved with the plurality of electrically nonconductive flexible layers.
10. The flexible circuit structure of claim 1 , further comprising a plurality of electrical-connection-arrangements, each electrical-connection-arrangement electrically connecting a respective adjacent pair of electrical loads of the plurality of electrical loads, and:
wherein the plurality of electrical loads are temperature sensors,
wherein the one or more conductive flexible circuit layers comprises a plurality of conductive flexible circuit layers, and
wherein at least a first one of the plurality of electrical-connection-arrangements electrically connects at least a respective adjacent pair of temperature sensors of the temperature sensors by at least one via arranged to electrically connect different ones of the electrically conductive flexible circuit layers.
11. The flexible circuit structure of claim 10 , wherein the first one of the plurality of electrical-connection-arrangements electrically connects the respective adjacent pair of temperature sensors corresponding to the first electrical load and the second electrical load.
12. The flexible circuit structure of claim 1 , wherein each electrical load of the plurality of electrical loads is provided at least in part by a respective one of a plurality of temperature sensors.