Energy supply system, power supply system, and working system

Patent metadata

Field	Value
Publication number	US-2026051597-A1
Application number	US-202519370584-A
Country	US
Kind code	A1
Filing date	Oct 27, 2025
Priority date	Apr 28, 2023
Publication date	Feb 19, 2026
Grant date	—

Abstract

A power supply system, includes a battery pack system and an energy supply system; the battery pack system includes a backpack battery pack and a handheld battery pack, the backpack battery pack is configured to be detachably mounted to a first type of power tool to supply power thereto, and the handheld battery pack is configured to be detachably mounted to a second type of power tool to supply power thereto; wherein, the backpack battery pack is configured to be carried by a user; the energy supply system includes a DC charging device, and the DC charging device is configured to convert electric energy of the backpack battery pack and transmit the electric energy to the handheld battery pack, so that the backpack battery pack charges the handheld battery pack.

First claim

What is claimed is:

1 . A power supply system, comprising a battery pack system and an energy supply system; the battery pack system comprises a backpack battery pack and a handheld battery pack, the backpack battery pack is configured to be detachably mounted to a first type of power tool to supply power thereto, and the handheld battery pack is configured to be detachably mounted to a second type of power tool to supply power thereto; wherein, the backpack battery pack is configured to be carried by a user; the energy supply system comprises a DC charging device, the DC charging device comprises an input interface and an output interface, the input interface is configured to detachably mount the backpack battery pack, and the output interface is configured to detachably mount the handheld battery pack; the DC charging device further comprises at least one DC charging module, and the DC charging module is configured to receive electric energy from the input interface, convert the electric energy and transmit the electric energy to the output interface, so that the backpack battery pack charges the handheld battery pack.

2 . The power supply system according to claim 1 , wherein the power supply system further comprises a carrying device, the carrying device is configured to be carried by the user, the carrying device comprises a cable, and a plug interface and a first carrying interface connected by the cable, the first carrying interface is configured to detachably mount the backpack battery pack, the plug interface is configured to detachably connect the second type of power tool, and when the second type of power tool is connected to the plug interface and the backpack battery pack is mounted to the first carrying interface, the backpack battery pack supplies power to the second type of power tool.

3 . The power supply system according to claim 1 , wherein the power supply system further comprises a carrying device, the carrying device is configured to be carried by a user, the carrying device comprises a cable, and a plug interface and a second carrying interface connected by the cable, the second carrying interface is configured to detachably mount the handheld battery pack, the plug interface is configured to detachably connect the second type of power tool, and when the second type of power tool is connected to the plug interface and the handheld battery pack is mounted to the second carrying interface, the handheld battery pack supplies power to the second type of power tool.

4 . The power supply system according to claim 1 , wherein the first type of power tool further comprises a backpack frame, the backpack frame is configured for a user to carry the first type of power tool, and the backpack battery pack is configured to be detachably mounted to the backpack frame, so that the backpack battery pack supplies power to the first type of power tool.

5 . The power supply system according to claim 1 , wherein the handheld battery pack is configured to be detachably mounted to the first type of power tool, so that the handheld battery pack supplies power to the first type of power tool.

6 . The power supply system according to claim 1 , wherein the weight range of the backpack battery pack is 4-12 Kg□or, the rated electric quantity range of the backpack battery pack is 550-3000 Wh.

7 . The power supply system according to claim 1 , wherein the ratio range of the rated electric quantity to the weight of the backpack battery pack is 60-300 Wh/Kg; or, the ratio range of the rated electric quantity to the volume of the backpack battery pack is 40-220 Wh/L.

8 . The power supply system according to claim 1 , wherein the discharge rate of the backpack battery pack is greater than or equal to 2 C; or, the maximum output power of the backpack battery pack is greater than or equal to 2 Kw.

9 . The power supply system according to claim 1 , wherein the average charging power of the DC charging device for the handheld battery pack is greater than the average discharge power of the second type of power tool for the handheld battery pack.

10 . The power supply system claim 1 , wherein the ratio range of the rated electric quantity to the weight of the backpack battery pack is 60-300 Wh/Kg, and the maximum allowable charging rate of the handheld battery pack is not less than 7 C.

11 . The power supply system according to claim 10 , wherein the discharge rate of the backpack battery pack is greater than or equal to 2 C.

12 . The power supply system according to claim 10 , wherein the time required for the handheld battery pack to be charged from an empty state to a full state is less than or equal to the time required for the handheld battery pack to be discharged from the full state to the empty state.

13 . The power supply system according to claim 10 , wherein the ratio of the rated electric quantity to the weight of the backpack battery pack is greater than the ratio of the rated electric quantity to the weight of the handheld battery pack.

14 . The power supply system according to claim 10 , wherein the maximum allowable charging rate of the handheld battery pack is greater than the maximum allowable charging rate of the backpack battery pack.

15 . The power supply system according to claim 1 , wherein the ratio of the first capacity to the second capacity is greater than or equal to 2.

16 . The power supply system according to claim 1 , wherein the DC charging device is only provided with the input interface for receiving power input.

17 . The power supply system according to claim 1 , wherein the input interface is configured to only receive power input from the backpack battery pack and not output power to the outside; and the output interface is configured to only output power to the handheld battery pack and not receive power input from the outside.

18 . The power supply system according to claim 1 , wherein the energy supply system further comprises at least one AC charging device, the AC charging device comprises an input power interface, at least one charging interface and at least one AC charging module, the input power interface is configured to connect to an AC power source, the charging interface is configured to detachably mount the backpack battery pack and/or the handheld battery pack, and the AC charging module is configured to receive AC electric energy from the input power interface, convert the AC electric energy into DC electric energy and output the DC electric energy to the charging interface, so as to charge the backpack battery pack and/or the handheld battery pack.

19 . The power supply system according to claim 18 , wherein the configuration of the charging interface is the same as that of the input interface; and/or the configuration of the charging interface is the same as that of the output interface; and/or the charging interface comprises the configuration of the input interface and the output interface.

20 . A power supply system, comprising a battery pack system and an energy supply system; the battery pack system comprises a first type of battery pack and a second type of battery pack, the first type of battery pack is configured to be detachably mounted to a first type of power tool to supply power thereto, and the second type of battery pack is configured to be detachably mounted to a second type of power tool to supply power thereto; wherein, the rated electric quantity range of the first type of battery pack is 550-3000 Wh, and the weight range of the first type of battery

Assignees

• Positec Power Tools Suzhou Co Ltd

Inventors

• Wu Hongbing
• Jiao Shiping
• Lin Wei

Classifications

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M10/46

  Accumulators structurally combined with charging apparatus (circuits for charging H02J7/00) · CPC title

• H01M50/256

  Carrying devices, e.g. belts · CPC title

• H01M2220/30

  Batteries in portable systems, e.g. mobile phone, laptop · CPC title

• H01M50/247 Primary

  specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers · CPC title