The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 09, 2025
Filed:
Jun. 09, 2022
Hilti Aktiengesellschaft, Schaan, LI;
Michael Lacher, Schwabmünchen, DE;
Hilti Aktiengesellschaft, Schaan, LI;
Abstract
A power tool having a first accumulator and a second accumulator, wherein the power tool has a first power electronics system with a first inverter and a second power electronics system with a second inverter, wherein the first inverter is electrically connected to the first accumulator and the second inverter is electrically connected to the second accumulator. The first power electronics system includes a first charge equalization device while the second power electronics system includes a second charge equalization device. The charge equalization devices are configured to carry out charge equalization between the accumulators. Furthermore, the power tool includes a device for speed control. In a second aspect, the invention relates to a method for carrying out charge equalization between two accumulators in a power tool. In this case, the charge equalization is preferably carried out by different load splitting via the charge equalization devices of the power electronics systems.