Outdoor walking equipment

Patent metadata

Field	Value
Publication number	US-12433198-B2
Application number	US-202217835623-A
Country	US
Kind code	B2
Filing date	Jun 8, 2022
Priority date	Jun 25, 2021
Publication date	Oct 7, 2025
Grant date	Oct 7, 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 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; 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.

First claim

What is claimed is:

1. A riding lawn mower, comprising:
a frame;
a seat mounted to the frame;
a walking assembly comprising at least one walking wheel supporting the frame;
a walking motor configured to drive the at least one walking wheel to rotate;
a cutting assembly comprising at least one 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 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 comprising at least one second energy storage unit;
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 and the first energy storage device and the second energy storage device are discharged in combination only when a voltage difference between the first energy storage device and the second energy storage device is within a pre-defined range.

2. The riding lawn mower of claim 1 , wherein the total energy of the second energy storage device is greater than or equal to 1 kWh and less than or equal to 30 kWh.

3. The riding lawn mower of claim 1 , wherein the total energy of the first energy storage device is greater than or equal to 100 Wh and less than or equal to 1500 Wh.

4. The riding lawn mower of claim 1 , wherein the second energy storage device, when fully charged, powers the riding lawn mower for four to six hours.

5. The riding lawn mower of claim 1 , wherein the first energy storage device, when fully charged, powers the handheld power tool for four to five hours.

6. The riding lawn mower of claim 1 , 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.

7. The riding lawn mower of claim 1 , wherein the first energy storage device is arranged in front of the second energy storage device.

8. The riding lawn mower of claim 1 , wherein the first energy storage unit and the second energy storage unit have different battery chemistries.

9. 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 the riding lawn mower identifies a type of the first energy storage device and the second storage device through the first identification terminal and the second identification terminal.

10. The riding lawn mower of claim 1 , wherein a nominal voltage of the second energy storage device is equal to a nominal voltage of the first energy storage device.

11. An outdoor walking equipment, comprising:
a body;
a walking assembly comprising at least one 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 at least one 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 at least one second energy storage unit;
wherein the first energy storage device and the second energy storage device are discharged in combination only when a voltage difference between the first energy storage device and the second energy storage device is within a pre-defined range.

12. The outdoor walking equipment of claim 11 , wherein the total energy of the second energy storage device is greater than or equal to 1 kWh and less than or equal to 30 kWh.

13. The outdoor walking equipment of claim 11 , wherein the total energy of the first energy storage device is greater than or equal to 100 Wh and less than or equal to 1500 Wh.

14. The outdoor walking equipment of claim 11 , wherein the outdoor walking equipment is enabled to work for four to six hours when the second energy storage device is fully charged.

15. The outdoor walking equipment of claim 11 , wherein the handheld power tool is enabled to work for four to five hours when the first energy storage device is fully charged.

16. The outdoor walking equipment of claim 11 , 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.

17. The outdoor walking equipment of claim 11 , wherein the first energy storage device is arranged in front of the second energy storage device.

18. The outdoor walking equipment of claim 11 , wherein the first energy storage unit and the second energy storage unit have different battery chemistries.

19. The outdoor walking equipment of claim 11 , 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 the outdoor walking equipment identifies a type of the first energy storage device and the second storage device through the first identification terminal and the second identification terminal.

20. The outdoor walking equipment of claim 11 , 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