Patent · US Active

Rechargeable battery pack

US11128011B2 · kind B2 · utility

1Cited by

1References

17Claims

0Family size

Assignee

Andreas Stihl AG & Co. KG · DE

Inventors

Daniel Wagner · Winterbach, DE
Markus Herrmann · Scheidegg, DE
Alexander Nordmann · Stuttgart, DE
Joachim Kolb · Ludwigsburg, DE

Key dates

Filing date	Sep 16, 2019
Grant date	Sep 21, 2021
Priority date	—
Expiry date	Dec 26, 2039

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A rechargeable battery pack includes an external housing with a housing base and a housing hood, connected to the housing base and surrounding an interior space, and a rechargeable battery cell block arranged in the interior space. The battery pack has a water discharge structure for discharging water contained in the interior space and/or water entering the external housing from the outside. The water discharge structure has, on one side of the external housing, a double-labyrinth wall structure which is open to liquid. An outer labyrinth wall structure is formed by overlapping respectively of an outer side wall of the housing base and housing hood. An inner labyrinth wall structure, which is arranged offset in relation to the outer labyrinth wall structure in the direction of the interior space, is formed by overlapping respectively of an inner side wall of the housing base and housing hood.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.