In one illustrative embodiment, a wind-driven charging system includes a wind-driven rotation device coupled to a rotatable shaft, and a plurality of electric generators disposed at different longitudinal locations along the rotatable shaft and each of the plurality of electric generators are rotati
In one illustrative embodiment, a wind-driven charging system includes a wind-driven rotation device coupled to a rotatable shaft, and a plurality of electric generators disposed at different longitudinal locations along the rotatable shaft and each of the plurality of electric generators are rotationally driven simultaneously by the rotatable shaft. By having the electric generators disposed at different longitudinal locations, more electric generators may be simultaneously driven by a common shaft. In some instances, a controller may be configured to enable more of the electric generators to provide electrical current to recharge a battery when the speed of rotation of the rotatable shaft increases, and may disable more of the plurality of electric generators to not provide electrical current when the speed of rotation of the rotatable shaft decreases.
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1. A wind-driven charging system, comprising: a wind-driven rotation device having a rotor;a rotatable shaft having a length extending along a rotation axis that extends away from the wind-driven rotation device;a coupling for operatively coupling the rotor of the wind-driven rotation device to the
1. A wind-driven charging system, comprising: a wind-driven rotation device having a rotor;a rotatable shaft having a length extending along a rotation axis that extends away from the wind-driven rotation device;a coupling for operatively coupling the rotor of the wind-driven rotation device to the rotatable shaft such that, in response to rotation of the rotor of the wind-driven rotation device, the rotatable shaft rotates at a different rotation rate than the rotor of the wind-driven rotation device; andat least three electric generators each disposed at a different longitudinal location along the length of the rotatable shaft, and each of the at least three electric generators are rotationally driven simultaneously by the rotatable shaft, and wherein each electric generator includes a wheel having an outer circumference, wherein the outer circumference of the wheel rides along an outer circumferential surface of the rotatable shaft as the rotatable shaft rotates. 2. The wind-driven charging system of claim 1, wherein the outer circumferential surface of the rotatable shaft includes serrations to help reduce slippage between the outer circumference of the wheels of the electric generators and the outer circumferential surface of the rotatable shaft. 3. The wind-driven charging system of claim 1, wherein the at least three electric generators include at least three alternators. 4. The wind-driven charging system of claim 1, wherein the at least three electric generators are regularly spaced along the rotatable shaft. 5. The wind-driven charging system of claim 1, wherein the wind-driven rotation device rotates about an axis that is laterally offset from the rotation axis of the rotatable shaft. 6. The wind-driven charging system of claim 1, wherein the outer circumference of the wheel includes gear teeth, and the outer circumferential surface of the rotatable shaft includes corresponding gear teeth. 7. The wind-driven charging system of claim 1, wherein the coupling includes: a first gear mounted to the rotor of the wind-driven rotation device; anda second gear mounted to the rotatable shaft, wherein the first gear drives the second gear. 8. The wind-driven charging system of claim 1, wherein a first subset of the at least three electric generators is disposed along a first common axis that is substantially parallel to the rotation axis of the rotatable shaft; andwherein a second subset of the at least three electric generators are disposed along a second common axis that is substantially parallel to the rotation axis of the rotatable shaft, and wherein the second common axis is substantially parallel to but angularly offset from the first common axis. 9. The wind-driven charging system of claim 8, wherein the second common axis is azimuthally displaced from the first common axis. 10. The wind-driven charging system of claim 8, wherein electric generators in the second subset are axially offset from electric generators in the first subset, the axial offset being the same for all electric generators in the first subset and the second subset. 11. The wind-driven charging system of claim 8, wherein the first subset of electric generators are collinear with a first line;wherein the second subset of electric generators are collinear with a second line;wherein the first line is parallel to the second line; andwherein the first and second lines are parallel to the rotation axis of the rotatable shaft. 12. The wind-driven charging system of claim 1, further comprising a controller in two-way electrical communication with the at least three electric generators. 13. The wind-driven charging system of claim 12, further comprising a battery that receives electrical recharging from the at least three electric generators, and wherein the controller controls, at least in part, the electrical recharging of the battery. 14. The wind-driven charging system of claim 13, further comprising an electric motor that receives at least some electrical power from the battery. 15. A drive system having a wind-driven charging system, comprising: an electric motor;a battery providing at least some current to the electric motor; anda controller that receives current from an electric generator subassembly and provides recharging current to the battery;the electric generator subassembly comprising: a wind-driven rotation device having a rotor;a rotatable shaft having a length extending along a rotation axis that extends away from the wind-driven rotation device;a coupling for operatively coupling the rotor of the wind-driven rotation device to the rotatable shaft such that, in response to rotation of the rotor of the wind-driven rotation device, the rotatable shaft rotates at a different rotation rate than the rotor of the wind-driven rotation device; anda first plurality of electric generators operatively coupled to the rotatable shaft and disposed at different longitudinal locations along the length of the rotatable shaft, and wherein each of the plurality of electric generators includes a wheel having an outer circumference, wherein the outer circumference of the wheel rides along an outer circumferential surface of the rotatable shaft as the rotatable shaft rotates. 16. The drive system of claim 15, wherein the controller dynamically electrically engages a selected non-zero number of the plurality of electric generators from two or more non-zero numbers, and electrically disengages the remainder of the plurality of electric generators, wherein the selected non-zero number is dependent upon at least one dynamically monitored parameter. 17. The drive system of claim 16, wherein the at least one dynamically monitored parameter comprises a voltage of the battery. 18. The drive system of claim 16, wherein the at least one dynamically monitored parameter comprises a measure related to a speed of rotation of the rotatable shaft. 19. A method for recharging a battery, comprising: exposing a wind driven rotation device to wind;rotating the wind driven rotation device in response to the wind;rotating a rotatable shaft that is coupled to the rotation device, wherein the rotatable shaft has a length that extends away from a first side of the wind-driven rotation device, wherein the rotatable shaft rotates at a different rotation rate than the wind-driven rotation device;rotating a plurality of electric generators disposed along the length of the rotatable shaft that extends away from the first side of the wind-driven rotation device, each of the plurality of electric generators includes a wheel having an outer circumference, wherein the outer circumference of the wheel rides along an outer circumferential surface of the rotatable shaft as the rotatable shaft rotates; andproviding an electrical current generated by the plurality of electric generators;to the battery. 20. The method of claim 19, further comprising: ascertaining a measure related to a speed of rotation of the rotatable shaft;with one or more of the electric generators enabled, enabling one or more additional of the plurality of electric generators to provide electrical current when the speed of rotation of the rotatable shaft increases; andwith one or more of the electric generators enabled, disabling less than all of the electric generators when the speed of rotation of the rotatable shaft decreases.
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이 특허에 인용된 특허 (16)
Bird Curtis D., Battery charging apparatus for electric powered vehicles.
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