HIGH-POWERED POWER TOOL SYSTEM

• Main Authors: Cox, John D, Velderman, Matthew J, Varipatis, Michael, Shook, Christopher W
• Format: Patent
• Language: English
• Published: 01.08.2024
• Subjects: BASIC ELECTRIC ELEMENTS; COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDEDFOR; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOTPARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOTOTHERWISE PROVIDED FOR; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION; HAND TOOLS; MANIPULATORS; PERFORMING OPERATIONS; PORTABLE POWER-DRIVEN TOOLS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; TRANSPORTING; WORKING CEMENT, CLAY, OR STONE; WORKING STONE OR STONE-LIKE MATERIALS

A power tool system includes a power tool having a tool housing. The tool housing includes a battery pack receptacle having a set of tool terminals. A brushless motor includes an output shaft operably coupled to drive a tool element, a stator having an outer diameter of approximately 60 mm to approximately 80 mm, and a stack length of approximately 75% to approximately 125% of the outer diameter of the stator. A controller is operably connected to the set of tool terminals and to the brushless motor to control power delivery to the brushless motor. A battery pack includes a battery pack housing connectable to the battery pack receptacle on the tool housing and a set of battery cells. The set of battery cells includes at least 15 battery cells each having a nominal voltage of approximately 3.6V and an impedance of approximately ≤13 mΩ. A set of battery pack terminals is connectable to the set of tool terminals. The battery pack has a nominal voltage of at least approximately 54V and the brushless motor is operable under load to output a power of between approximately 3000 W and approximately 5000 W.