Outdoor walking equipment

Patent metadata

Field	Value
Publication number	US-12439854-B2
Application number	US-202217835690-A
Country	US
Kind code	B2
Filing date	Jun 8, 2022
Priority date	Jun 25, 2021
Publication date	Oct 14, 2025
Grant date	Oct 14, 2025

Abstract

A riding lawn mower, including: a frame; a seat; a walking assembly and a walking motor; a cutting assembly and a driving motor configured to drive the cutting assembly; a first energy storage device configured to supply power to at least one of the walking motor or the driving motor, the first energy storage device including at least one first energy storage unit, the first energy storage device detachably mounted to the frame and enabled to supply power to a handheld power tool when detached from the riding lawn mower; and a second energy storage device configured to supply power to at least one of the walking motor or the driving motor, the second energy storage device including at least one second energy storage unit; wherein an energy density of the second energy storage unit is different from an energy density of the first energy storage unit.

First claim

What is claimed is:

1. A riding lawn mower, comprising:
a frame;
a seat mounted to the frame;
a walking assembly comprising a walking wheel supporting the frame;
a walking motor configured to drive the walking wheel to rotate;
a cutting assembly comprising a cutting piece for cutting grass;
a driving motor configured to drive the cutting assembly;
a first energy storage device configured to supply power to at least one of the walking motor or the driving motor, the first energy storage device comprising a first energy storage unit, the first energy storage device detachably mounted to the frame and enabled to supply power to a handheld power tool when detached from the riding lawn mower; and
a second energy storage device configured to supply power to at least one of the walking motor or the driving motor, the second energy storage device comprising a second energy storage unit,
wherein the first energy storage unit comprises a first cell, the second energy storage unit comprises a second cell, an energy density of the second cell is different from an energy density of the first cell, a ratio of the energy density of the second cell to the energy density of the first cell is greater than or equal to 0.3 and less than 1, and a total energy of the second energy storage device is greater than a total energy of the first energy storage device.

2. The riding lawn mower of claim 1 , wherein the first energy storage unit is a lithium battery cell and the second energy storage unit is a LiFePO4 battery cell.

3. The riding lawn mower of claim 1 , wherein a ratio of a total energy of the second energy storage device to a total energy of the first energy storage device is greater than or equal to 2 and less than or equal to 20.

4. The riding lawn mower of claim 1 , further comprising a first identification terminal engageable with the second energy storage device and a second identification terminal engageable with the first energy storage device and wherein the riding lawn mower identifies a type of the first energy storage device and the second energy storage device through the first identification terminal and the second identification terminal.

5. The riding lawn mower of claim 1 , wherein the first energy storage unit and the second energy storage unit are of different shapes.

6. The riding lawn mower of claim 5 , wherein the first energy storage unit has a first positive electrode and a first negative electrode, the first positive electrode and the first negative electrode are arranged on opposite sides of the first energy storage unit, the second energy storage unit has a second positive electrode and a second negative electrode, and the second positive electrode and the second negative electrode are arranged on a same side of the second energy storage unit.

7. A riding lawn mower, comprising:
a frame;
a seat mounted to the frame;
a walking assembly comprising a walking wheel supporting the frame;
a walking motor configured to drive the walking wheel to rotate;
a cutting assembly comprising a cutting piece for cutting grass;
a driving motor configured to drive the cutting assembly;
a first energy storage device configured to supply power to at least one of the walking motor or the driving motor, the first energy storage device comprising a first energy storage unit, the first energy storage device detachably mounted to the frame and enabled to supply power to a handheld power tool when detached from the riding lawn mower; and
a second energy storage device configured to supply power to at least one of the walking motor or the driving motor, the second energy storage device comprising a second energy storage unit,
wherein the first energy storage unit comprises a first cell, the second energy storage unit comprises a second cell, the first cell has a first positive electrode, the second cell has a second positive electrode, and the first positive electrode and the second positive electrode are made from different materials.

8. The riding lawn mower of claim 7 , wherein the first energy storage unit and the second energy storage unit are of different shapes.

9. The riding lawn mower of claim 8 , wherein the first energy storage unit has a first negative electrode, the first positive electrode and the first negative electrode are arranged on opposite sides of the first energy storage unit, the second energy storage unit has a second negative electrode, and the second positive electrode and the second negative electrode are arranged on a same side of the second energy storage unit.

10. The riding lawn mower of claim 7 , wherein an energy density of the second energy storage unit is different from an energy density of the first energy storage unit.

11. The riding lawn mower of claim 7 , wherein a ratio of a total energy of the second energy storage device to a total energy of the first energy storage device is greater than or equal to 2 and less than or equal to 20.

12. The riding lawn mower of claim 7 , further comprising a first identification terminal engageable with the second energy storage device and a second identification terminal engageable with the first energy storage device and wherein the riding lawn mower identifies a type of the first energy storage device and the second energy storage device through the first identification terminal and the second identification terminal.

13. An outdoor walking equipment, comprising:
a body;
a walking assembly comprising a walking wheel supporting the body;
a first energy storage device configured to supply power to the outdoor walking equipment, the first energy storage device comprising a first energy storage unit, the first energy storage device detachably mounted to the body and enabled to supply power to a handheld power tool when detached from the outdoor walking equipment; and
a second energy storage device configured to supply power to the outdoor walking equipment, the second energy storage device comprising a second energy storage unit;
wherein the first energy storage unit comprises a first cell, the second energy storage unit comprises a second cell, the first cell and the second cell have different battery chemistries, and a ratio of a total energy of the second energy storage device to a total energy of the first energy storage device is greater than or equal to 2 and less than or equal to 20.

14. The outdoor walking equipment of claim 13 , wherein a ratio of an energy density of the second energy storage unit to an energy density of the first energy storage unit is greater than or equal to 0.3 and less than or equal to 1.

15. The outdoor walking equipment of claim 13 , wherein the first energy storage unit is a cylindrical battery cell and the second energy storage unit is a block-shaped battery cell.

16. The outdoor walking equipment of claim 13 , further comprising a first identification terminal engageable with the second energy storage device and a second identification terminal engageable with the first energy storage device and wherein the outdoor walking equipment identifies a type of the first energy storage device and the second energy storage device through the first identification terminal and the second identification terminal.

17. The outdoor walking equipment of claim 13 , wherein a nominal voltage of the second energy storage device is equal to a nominal voltage of the first energy storage device.

Assignees

• Nanjing Chervon Ind Co Ltd

Inventors

• Yang Dezhong
• Liu Yangzi
• Li Li
• Li Ju

Classifications

• H02J7/855

  with circuits adapted for supplying loads from the battery · CPC title

• H02J7/50

  acting upon multiple batteries simultaneously or sequentially · CPC title

• H02J7/933

  the cycle being controlled or terminated in response to electric parameters · CPC title

• H02J7/70

  characterised by the mechanical construction · CPC title

• H02J7/751

  concerning the insertion or the connection of the batteries · CPC title