US 11,942,807 B2
Riding-type mower and current-limiting protection method thereof
Lei Wang, Nanjing (CN); and Dezhong Yang, Nanjing (CN)
Assigned to Nanjing Chervon Industry Co., Ltd., Nanjing (CN)
Filed by Nanjing Chervon Industry Co., Ltd., Nanjing (CN)
Filed on Jan. 25, 2021, as Appl. No. 17/156,709.
Application 17/156,709 is a continuation of application No. PCT/CN2019/098877, filed on Aug. 1, 2019.
Claims priority of application No. 201810860510.4 (CN), filed on Aug. 1, 2018.
Prior Publication US 2021/0143650 A1, May 13, 2021
Int. Cl. H02J 7/00 (2006.01); A01D 34/00 (2006.01); A01D 69/02 (2006.01); A01D 101/00 (2006.01)
CPC H02J 7/0016 (2013.01) [A01D 34/006 (2013.01); A01D 69/02 (2013.01); H02J 7/00304 (2020.01); H02J 7/00306 (2020.01); A01D 2101/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A riding-type mower, comprising:
a body frame;
a seat disposed on the body frame;
a mowing unit, comprising a mowing element and a first motor configured to drive the mowing element;
a walking unit, comprising a road wheel and a second motor configured to drive the road wheel; and
a power supply device mounted on the body frame,
wherein the power supply device comprises:
a plurality of battery packs configured to supply power to the riding-type mower, wherein at least one of the plurality of battery packs is detachably mounted to the riding-type mower and further configured to supply power to a hand-held electric power tool, the plurality of battery packs each are provided with at least one battery cell group, and each battery cell group comprises a plurality of battery cells electrically connected to each other; and
a power management module configured to determine whether the plurality of battery packs satisfy a discharge condition and control a battery pack satisfying the discharge condition to discharge when the battery pack satisfies the discharge condition;
wherein the discharge condition comprises that a sum of numbers of respective battery cell groups of all the plurality of battery packs connected in parallel is greater than or equal to 5.