US 11,670,808 B2
Charger and charger system
Wyatt R. Silha, Milwaukee, WI (US); John G. Marx, Hartford, WI (US); Cameron R. Schulz, Milwaukee, WI (US); Samuel Sheeks, Germantown, WI (US); Joel D. Snyder, Milwaukee, WI (US); and Jacob D. Rosenthal, Brookfield, WI (US)
Assigned to Milwaukee Electric Tool Corporation, Brookfield, WI (US)
Filed by MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
Filed on Dec. 3, 2020, as Appl. No. 17/110,456.
Claims priority of provisional application 62/942,889, filed on Dec. 3, 2019.
Prior Publication US 2021/0167430 A1, Jun. 3, 2021
Int. Cl. H01M 10/46 (2006.01); H01M 10/44 (2006.01); H01M 10/6563 (2014.01); H02J 7/00 (2006.01); H01M 50/20 (2021.01)
CPC H01M 10/441 (2013.01) [H01M 10/6563 (2015.04); H01M 50/20 (2021.01); H02J 7/0013 (2013.01); H02J 7/0044 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A charger comprising:
a housing including a front wall, a rear wall, a top wall, a bottom wall, a first side wall, and a second side wall;
an interface positioned in the front wall and configured to engage a battery pack, the interface including charging terminals positioned between a first rail and a second rail, a first groove positioned between the first rail and a wall of the housing, and a second groove positioned between the second rail and the wall of the housing, the interface being in communication with an interior of the housing;
a fan coupled within the housing adjacent the interface; and
an air passage member including a hollow body that has a first end and a second end spaced apart from the first end, the first end being coupled to the fan and the second end extending through one of the walls; and
wherein the fan is operable to suck an air flow into the housing from outside the housing and guide the air flow through the air passage member to the interface,
wherein each of the first rail and the second rail includes an aperture extending therethrough,
wherein a first chamber is positioned within the housing and is defined by a chamber wall, the first chamber being in communication with the apertures in each of the first and second rails and defining a first axis,
wherein a second chamber extends through the air passage member and includes a second axis and a third axis that is positioned at an oblique angle relative to the second axis, the second axis being coincident with the first axis, and
wherein the fan is positioned between the first chamber and the second chamber.