Driving assembly management system, fault detection method, and electric power-assisted bicycle

Inventor: Min Sun (Jiangsu, CN)

Assignee: NANJING DMHC SCIENCE & TECHNOLOGY CO., LTD.

G07C5/008 B62M6/45 G01M17/007 G01R31/006 H02K11/35

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Quick Facts

Patent No.: US 12,670,750
App. No.: 18/705,518
Granted: Jun 30, 2026
Kind: B2

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Abstract

A driving assembly management system, a fault detection method, and an electric power-assisted bicycle. The driving assembly management system comprises: an Internet-of-things device, multiple digital assemblies, and a bus; each digital assembly comprises: a driving assembly and a digital circuit connected to the driving assembly; the digital circuit comprises: an assembly signal processing circuit, a first processor, and a first memory; an input end of the assembly signal processing circuit is connected to a signal acquisition end of the driving assembly; the first processor is further connected to the assembly signal processing circuit; the first memory is connected to the first processor; and the Internet-of-things device is communicatively connected to the first processor in the multiple digital assemblies, so as to perform fault detection according to working state data and identification information of the multiple digital assemblies.

Claims (34)

1 . A driving assembly management system, comprising: an Internet-of-things device, multiple digital assemblies and a bus; each digital assembly comprises: one driving assembly in a driving system of an electric power-assisted bicycle, and a digital circuit connected to the driving assembly, wherein the digital circuit comprises: an assembly signal processing circuit, a first processor and a first memory, wherein an input end of the assembly signal processing circuit is connected to a signal collection end of the driving assembly, so as to process a driving signal of the driving assembly during working, and obtain working state data of the digital assembly; the first processor is further connected to the assembly signal processing circuit, so as to acquire the working state data of the digital assembly; and the first memory is connected to the first processor, so as to store the working state data and identification information about the digital assembly; and

the Internet-of-things device is connected in communication with the first processors in the multiple digital assemblies through the bus, so as to perform fault detection according to the working state data of the multiple digital assemblies and the identification information about the multiple digital assemblies.

2 . The driving assembly management system according to claim 1 , wherein the multiple digital assemblies comprise: a motor digital assembly, and a driving assembly in the motor digital assembly is a motor; and wherein the driving assembly management system further comprises: a controller, wherein the controller comprises: a motor driving circuit and a second processor; and the second processor is mounted on the bus, so that the second processor acquires the working state data of the multiple digital assemblies;

the second processor is further connected to the motor driving circuit, so that the second processor outputs a pulse control signal to the motor driving circuit based on the working state data of the multiple digital assemblies; and

the motor driving circuit is connected to a three-phase input end of the motor, so that a three-phase control signal output by the motor driving circuit drives the motor to output power assistance.

3 . The driving assembly management system according to claim 2 , wherein the controller further comprises: a second memory, wherein the second memory is connected to the second processor, so as to store identification information about the controller, and working state data of the controller.

4 . The driving assembly management system according to claim 1 , wherein the Internet-of-things device is connected in communication with a cloud server, so that the cloud server performs fault detection on the electric power-assisted bicycle based on the working state data of the multiple digital assemblies.

5 . The driving assembly management system according to claim 1 , wherein the driving assembly management system further comprises: a fault detection apparatus, wherein the fault detection apparatus is mounted on the bus, so as to perform fault detection on the electric power-assisted bicycle based on the working state data of the multiple digital assemblies.

6 . The driving assembly management system according to claim 2 , wherein the multiple digital assemblies further comprise: at least one digital assembly of a battery management digital assembly, a meter digital assembly, and a sensor digital assembly.

7 . A fault detection method for a driving assembly, applied to the driving assembly management system according to claim 1 , wherein the method comprises steps of:

acquiring, by the Internet-of-things device, working state data of the multiple digital assemblies and identification information about the multiple digital assemblies; and

performing fault detection according to the working state data of the multiple digital assemblies and the identification information about the multiple digital assemblies.

8 . The method according to claim 7 , wherein the step of performing fault detection according to the working state data of the multiple digital assemblies and the identification information about the multiple digital assemblies comprises:

transmitting, through the Internet-of-things device, the working state data of the multiple digital assemblies and the identification information about the multiple digital assemblies to a cloud server, so that the cloud server performs fault detection according to the working state data of the multiple digital assemblies and the identification information about the multiple digital assemblies; or

performing, by the Internet-of-things device, fault detection according to the working state data of the multiple digital assemblies and the identification information about the multiple digital assemblies; or

performing, by the fault detection apparatus, fault detection according to the working state data of the multiple digital assemblies and the identification information about the multiple digital assemblies.

9 . The method according to claim 7 , further comprising a step of:

generating, if a fault detection result indicates that at least one digital assembly among the multiple digital assemblies has a fault, demand order information for replacing the at least one digital assembly, according to identification information about the at least one digital assembly that has a fault.

10 . An electric power-assisted bicycle, comprising: an electric power-assisted bicycle frame; and the driving assembly management system according to claim 1 mounted on the electric power-assisted bicycle frame.

11 . The fault detection method for a driving assembly according to claim 7 , wherein the multiple digital assemblies comprise: a motor digital assembly, and a driving assembly in the motor digital assembly is a motor; and wherein the driving assembly management system further comprises: a controller, wherein the controller comprises: a motor driving circuit and a second processor; and the second processor is mounted on the bus, so that the second processor acquires the working state data of the multiple digital assemblies;

the motor driving circuit is connected to a three-phase input end of the motor, so that a three-phase control signal output by the motor driving circuit drives the motor to output power assistance.

12 . The fault detection method for a driving assembly according to claim 11 , wherein the controller further comprises: a second memory, wherein the second memory is connected to the second processor, so as to store identification information about the controller, and working state data of the controller.

13 . The fault detection method for a driving assembly according to claim 7 , wherein the Internet-of-things device is connected in communication with a cloud server, so that the cloud server performs fault detection on the electric power-assisted bicycle based on the working state data of the multiple digital assemblies.

14 . The fault detection method for a driving assembly according to claim 7 , wherein the driving assembly management system further comprises: a fault detection apparatus, wherein the fault detection apparatus is mounted on the bus, so as to perform fault detection on the electric power-assisted bicycle based on the working state data of the multiple digital assemblies.

15 . The fault detection method for a driving assembly according to claim 11 , wherein the multiple digital assemblies further comprise: at least one digital assembly of a battery management digital assembly, a meter digital assembly, and a sensor digital assembly.

16 . The electric power-assisted bicycle according to claim 10 , wherein the multiple digital assemblies comprise: a motor digital assembly, and a driving assembly in the motor digital assembly is a motor; and wherein the driving assembly management system further comprises: a controller, wherein the controller comprises: a motor driving circuit and a second processor; and the second processor is mounted on the bus, so that the second processor acquires the working state data of the multiple digital assemblies;

the motor driving circuit is connected to a three-phase input end of the motor, so that a three-phase control signal output by the motor driving circuit drives the motor to output power assistance.

17 . The electric power-assisted bicycle according to claim 16 , wherein the controller further comprises: a second memory, wherein the second memory is connected to the second processor, so as to store identification information about the controller, and working state data of the controller.

18 . The electric power-assisted bicycle according to claim 10 , wherein the Internet-of-things device is connected in communication with a cloud server, so that the cloud server performs fault detection on the electric power-assisted bicycle based on the working state data of the multiple digital assemblies.

19 . The electric power-assisted bicycle according to claim 10 , wherein the driving assembly management system further comprises: a fault detection apparatus, wherein the fault detection apparatus is mounted on the bus, so as to perform fault detection on the electric power-assisted bicycle based on the working state data of the multiple digital assemblies.

20 . The electric power-assisted bicycle according to claim 16 , wherein the multiple digital assemblies further comprise: at least one digital assembly of a battery management digital assembly, a meter digital assembly, and a sensor digital assembly.