Method of estimating a state-of-charge of a battery pack
AssigneeTechtronic Cordless GP
InventorFrederick Bryan
Life of this patent
Estimating the term…
Abstract
A method of estimating a state-of-charge of a battery pack having one or more cells is provided. The method includes obtaining, by a battery controller of the battery pack, data from a device electrically coupled to the battery pack. The data is indicative of a power requirement for the device. The method can further include determining, by the battery controller, a state-of-charge of the battery pack based, at least in part, on the data indicative of the power requirement for the device.
Claims24
A method of estimating a state-of-charge of a battery pack comprising a plurality of cells, the method comprising:
- obtaining, by a battery controller of the battery pack, data from a device electrically coupled to the battery pack, the data indicative of a power requirement for the device;
- and
- determining, by the battery controller, a state-of-charge of the battery pack based, at least in part, on the data indicative of the power requirement for the device.
A battery pack comprising:
- one or more battery cells;
- and
- a controller configured to perform operations, the operations comprising:
- obtaining data from a device electrically coupled to the one or more battery cells, the data indicative of a power requirement for the device;
- and
- determining a state-of-charge of the battery pack based, at least in part, on the data indicative of the power requirement for the device.
A power tool comprising:
- an electric motor;
- and
- a controller configured to perform operations, the operations comprising:
- obtaining data from a battery pack electrically coupled to the electric motor, the data indicative of an impedance of the battery pack;
- determining an adjusted amount of electrical power the electric motor draws from the battery pack based, at least in part, on the data indicative of the impedance of the battery pack;
- and
- controlling operation of the electric motor such that the electric motor draws the adjusted amount of electrical power from the battery pack.
Dependencies are inferred from the claim text.