What safety standards does the electrical system of an electric wheelchair need to comply with?
As an important auxiliary mobility device, the design and operation of the electrical system of an electric wheelchair must strictly comply with a series of safety standards. These standards not only ensure the safety of the user, but also improve the reliability and durability of the equipment. This article will explore in depth the safety standards that the electrical system of an electric wheelchair needs to comply with, and provide some practical suggestions and tips.
I. Electrical safety standards
1. GB 9706.1-2007 “Medical Electrical Equipment Part 1: General Safety Requirements”
As a type of medical electrical equipment, the electrical safety of an electric wheelchair should comply with the requirements of GB 9706.1-2007. This standard specifies the basic safety requirements for medical electrical equipment, including insulation, grounding, leakage protection, etc. For example, the standard requires that the insulation resistance of the equipment should be large enough to prevent current leakage from causing electric shock to the user; the metal casing of the equipment should be reliably grounded to reduce the risk of electric shock.
2. GB/T 12996-2012 “Electric Wheelchair”
GB/T 12996-2012 specifies the electrical safety requirements for electric wheelchairs. For example, the standard requires that the frame, motor housing, battery housing and controller housing of the wheelchair should not be connected to the battery pack or any other live parts of the electrical system, and the DC current between them should not exceed 5mA. In addition, the standard also puts forward requirements for the protection of non-insulated electrical parts to ensure the safety of users.
2. Electromagnetic compatibility standards
1. ISO 7176-21
ISO 7176-21 specifies the electromagnetic compatibility requirements for electric wheelchairs. Electromagnetic compatibility refers to the ability of a device to work normally in an electromagnetic environment and not interfere with other devices. Electric wheelchairs need to meet certain electromagnetic compatibility standards to ensure that they will not be affected by external electromagnetic interference during use, nor will they interfere with surrounding electronic equipment.
3. Battery and charger safety standards
1. GB/T 18029.25-2022 “Wheelchair Part 25: Batteries and Chargers for Electric Wheelchairs”
GB/T 18029.25-2022 specifies the safety requirements for batteries and chargers for electric wheelchairs. The standard covers battery performance, safety testing, and charger design and use requirements. For example, the standard requires that the battery should have protection functions such as overcharge, over discharge, and short circuit to prevent the battery from being dangerous due to abnormal use.
2. SJ/T 11810-2022 “Safety Technical Specifications for Lithium-ion Batteries and Battery Packs for Electric Wheelchairs”
SJ/T 11810-2022 is a safety technical specification for lithium-ion batteries and battery packs for electric wheelchairs. The specification specifies the safety requirements for battery packs in detail, including the structure, electrical safety, thermal safety, etc. of the battery pack. For example, the battery pack should have protection measures such as overheating and short circuit to ensure safety during use.
4. Other related standards
1. EN 12184
EN 12184 is a European standard that specifies the requirements and test methods for electric wheelchairs and electric scooters and their chargers. The standard includes requirements for electrical systems, such as the safety of battery chargers and the reliability of electrical connections. Electric wheelchairs entering the European market need to comply with the EN 12184 standard and pass the CE certification.
2. ISO 7176 series
The ISO 7176 series of standards describes various test methods for wheelchairs and electric scooters. Among them, ISO 7176-14 specifies the requirements and test methods for the power and control systems of electric wheelchairs and electric scooters, including the performance and safety tests of the electrical system.
5. Precautions in practical applications
1. Choose products that meet the standards
When purchasing an electric wheelchair, you should choose products that meet the above safety standards. Check the product’s certification marks, such as CE certification, GB certification, etc., to ensure that its electrical system meets the relevant safety requirements.
2. Regular maintenance and inspection
Regularly maintain and inspect the electrical system of the electric wheelchair, including components such as batteries, chargers, motors and controllers. Check the appearance of the battery for damage, ensure the normal operation of the charger, and check whether the connection between the motor and the controller is firm.
3. Correct use and operation
Use and operate the device correctly according to the instruction manual of the electric wheelchair. Avoid using it in harsh environments, such as high temperature and humidity, so as not to affect the performance and life of the electrical system. At the same time, be careful not to overcharge to extend the battery life.
4. Professional repair and maintenance
When the electrical system of the electric wheelchair is found to be faulty, professional maintenance personnel should be contacted in time for repair and maintenance. Do not disassemble and repair electrical components by yourself to avoid causing greater damage or safety hazards.
6. Summary
The electrical system safety standards of electric wheelchairs are an important guarantee to ensure the safe operation of the equipment and the safety of users. By understanding and complying with the above safety standards, selecting products that meet the standards, and performing regular maintenance and inspections, the reliability and service life of the electric wheelchair can be effectively improved. At the same time, the correct use and operation of the equipment, as well as seeking professional repair and maintenance, are also key measures to ensure the safety of the electrical system of the electric wheelchair. I hope that this article can provide valuable reference for users, manufacturers and sellers of electric wheelchairs, and jointly promote the safety and development of the electric wheelchair industry.
Post time: Mar-24-2025