IP Library › Granted Patent US 12,642,181
Granted Patent B2
US 12,642,181 · App. 18/427,380 · Granted Jun 2, 2026

Electric riding lawn mower

Inventors: Qian Liu (Nanjing, CN); Toshinari Yamaoka (Nanjing, CN); Zhen Wang (Nanjing, CN); Fangjie Nie (Nanjing, CN)
Assignee: Nanjing Chervon Industry Co., Ltd.
A01D69/02A01D34/64A01D34/78A01D2101/00
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Quick Facts
Patent No.
US 12,642,181
App. No.
18/427,380
Filed
Jan 30, 2024
Granted
Jun 2, 2026
Kind
B2
Art Unit
3615
USPC
56/11.9
Abstract

An electric riding lawn mower includes a seat for a user to ride, a main frame to support the seat, a power output assembly including a mowing element to output power to realize mowing function and a first motor to drive the mowing element, a walking assembly to at least drive the electric riding lawn mower to travel in the direction of a first straight line on the ground and a second motor to drive the walking assembly, and a power supply device to power the electric riding lawn mower with a first battery pack, which includes a first battery pack housing and a plurality of battery cells disposed therein. The power supply device is mounted to the main frame. At least one of the first battery packs of the power supply device forms a pluggable connection with the main frame. The battery cells are lithium batteries.

Claims (24)

1 . An electric riding lawn mower, comprising:

a seat for a user to sit;

a main frame configured to support the seat;

a power output assembly comprising a mowing element for outputting power to realize a mowing function and a first motor for driving the mowing element to output power;

a walking assembly configured to at least drive the electric riding lawn mower to travel on a surface and comprising a second motor, wherein the walking assembly further comprises a first travelling wheel rotatable about a first axis and a second travelling wheel rotatable about a second axis; and

a power supply device comprising six battery packs for powering the first motor or the second motor of the electric riding lawn mower;

wherein each of the six battery packs comprises:

a battery pack housing; and

battery cells disposed in the battery pack housing,

wherein the six battery packs are removable relative to the main frame and capable of powering another garden tool when the six battery packs are removed from the main frame, the six battery packs are arranged in three rows and two columns, each one of the three rows has two ones of the six battery packs, and each one of the two columns has three ones of the six battery packs.

2 . The electric riding lawn mower of claim 1 , wherein the six battery packs are arranged in the three rows in a front-rear direction, and each one of the three rows has the two ones of the six battery packs arranged in a left-right direction.

3 . The electric riding lawn mower of claim 1 , wherein the power supply device comprises a battery compartment housing that comprises a main body portion and a cover that is pivotally coupled to the main body portion, the six battery packs are arranged in the battery compartment housing.

4 . The electric riding lawn mower of claim 3 , wherein the battery compartment housing is provided with six battery compartments for mounting the six battery packs.

5 . The electric riding lawn mower of claim 4 , wherein each of the six battery compartments is provided with input terminals to electrically connect to each of the six battery packs.

6 . The electric riding lawn mower of claim 4 , wherein each of the six battery compartments is provided with a latch for locking each of the six battery packs.

7 . The electric riding lawn mower of claim 4 , wherein each of the six battery compartments is provided with a pop-up structure for ejecting each of the six battery packs.

8 . The electric riding lawn mower of claim 4 , wherein each of the six battery compartments is provided with a guiding structure for guiding each of the six battery packs to be inserted into each of the six battery compartments.

9 . The electric riding lawn mower of claim 1 , wherein the six battery packs are disposed a rear side of the seat.

10 . The electric riding lawn mower of claim 1 , wherein a capacity of a signal one of the six battery packs is greater than or equal to 130 Wh and less than or equal to 1000 Wh.

11 . The electric riding lawn mower of claim 1 , wherein a weight of a single one of the six battery packs is greater than or equal to 0.1 kg and less than or equal to 4 kg.

12 . The electric riding lawn mower of claim 1 , wherein a discharge power of a single one of the six battery packs is greater than or equal to 500 W and less than or equal to 6500 W.

13 . The electric riding lawn mower of claim 1 , wherein when any of the six battery packs is installed in a battery compartment housing, the electric riding lawn mower is capable of being operated.

14 . The electric riding lawn mower of claim 1 , wherein the electric riding lawn mower is capable of being in zero-turns.

15 . The electric riding lawn mower of claim 1 , wherein in a height direction, an upper end of the power supply device is shorter than the seat.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 31, 2024
From: LIU, QIAN; YAMAOKA, TOSHINARI; WANG, ZHEN; NIE, FANGJIE
To: NANJING CHERVON INDUSTRY CO., LTD.
Reel/Frame 066307/0120 →
Priority Claims (2)
CN 201711457168.5 · Dec 28, 2017 · national
CN 201810885961.3 · Aug 6, 2018 · national
Continuity (6)
Continuation 18451894 · Aug 18, 2023
Continuation 18191776 · Mar 28, 2023
Continuation 17825298 · May 26, 2022
Continuation 16909549 · Jun 23, 2020
Continuation PCTCN2018123856 · Dec 26, 2018
Related Publication 20240284831A1 · Aug 29, 2024
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