Power management method for a solar watch
AssigneeThe Swatch Group Research and Development Ltd
InventorsMatthias Imboden, Jean-Jacques Born, Alexandre Haemmerli, Lionel Paratte, Christophe Germiquet, François Gueissaz, Michel Willemin
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Abstract
A power management method for a solar watch or a solar automatic watch. The power management method including at least one providing a primary power supply from at least one energy supplier. The primary power supply is converted to a secondary power supply when the primary power supply reaches at least one primary threshold and/or at least one secondary threshold. A motor is supplied with the secondary power supply such as to wind a mainspring via the motor.
Claims6
A power management method for a solar watch or a solar automatic watch;
- said power management method comprising:
- providing a primary power supply from at least one energy supplier;
- converting said primary power supply to a secondary power supply when said primary power supply having alternatively OFF periods and ON periods, each ON period starting when said primary power supply reaches a second voltage threshold and ending when this primary power supply then becomes a first voltage threshold lower than the second voltage threshold, the secondary power supply in each ON period being regulated so that its supply voltage remains at a third voltage threshold, higher than the first voltage threshold and lower than the second voltage threshold, when the voltage of the primary power supply exceeds said third voltage threshold;
- supplying a motor with said secondary power supply during at least a part of each ON period by chopping the supply voltage into at least a periodic modulated signal which is provided by the secondary power supply;
- and
- winding a mainspring via said motor.
Dependencies are inferred from the claim text.