T/CHINABICYCLE 7-2021 Active Group standards

T/CHINABICYCLE 7-2021 Electric assist bicycle uses motor and controller

Publish Date: 2021-12-09 Implement Date: 2022-02-10 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/CHINABICYCLE 7-2021

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Motorcycles and motorized bicycles

Publish Date: 2021-12-09

Implement Date: 2022-02-10

Scope

Main Technical Content: 1. General Description: Since the electric motors and controllers for electric-assisted bicycles are similar to those for electric bicycles, the basic requirements of the standard are consistent. Therefore, this document only addresses the requirements for the power and controllers of the electric-assisted portion, as well as content beyond QB/T 2946-2020. Terms that overlap with the requirements of GB 17761-2018, QB/T 2946-2020, and QB/T 1802 are directly listed in the General Provisions of Section 5.1 of this document with clear references to the relevant standards, without duplicating the requirements here. Specific handling is as follows: 1) Content overlapping with GB 17761-2018: Requirements such as the maximum input voltage, maximum assisted driving speed, fire resistance and flame retardancy of the non-metallic shell of the controller, and radio interference characteristics of electric-assisted bicycle electric motors and controllers are consistent with the corresponding provisions of GB 17761-2018. These items are required to comply with the relevant provisions of GB 17761-2018 as specified in the General Provisions of Section 5.1 of this document. 2) Content overlapping with QB/T 2946-2020: Requirements such as the lead wires and connectors of electric-assisted bicycle electric motors and controllers, axial clearance of the motor, radial runout and end face runout of the integrated wheel hub motor, no-load current of the motor, maximum input current of the controller, rated input current of the controller, efficiency of the controller, undervoltage protection, current limiting protection, stall protection, phase-to-phase short-circuit protection, tensile strength of the spoke holes of the motor, vibration, impact, motor overspeed, motor short-time overload, motor temperature rise, low temperature, high temperature, constant humidity, high-low temperature cycling, controller aging, and motor life are consistent with the cor