Balance car battery UL2271 certification in order to ensure the safety and reliability of the balance car battery, UL2271 is a battery safety standard and a certification issued by UL(Underwriters Laboratories), the world's most credible certification body, indicating that the battery has met strict safety standards and can provide high quality power protection in various occasions.
Want to balance the car battery UL2271 certification, need to follow the following steps:
the first step, apply for certification. Before making an application, it is necessary to determine the identity information and requirements of the applicant and the product, determine the certification scope and standards of the application, and provide the required materials and information as required.
The second step, material review. UL strictly reviews the submitted materials to confirm whether the battery meets the requirements of UL2271 standard and whether the materials are true and effective.
The third step, sample testing. According to UL2271 standard requirements, the balance car battery is tested, and the test contents include: battery voltage, capacity, cycle life, short circuit, overcharge, overdischarge, high temperature and other factors. In addition, the identification, labeling, etc. should be checked to ensure that the product is standardized and clear.
The fourth step, on-site audit. If the test is qualified, UL engineers will conduct an on-site audit to conduct a comprehensive inspection of the process, equipment and production environment to confirm compliance and strict quality control in the production process.
The fifth step, the certification conclusion. After the above steps of the audit and testing, UL engineers will issue the corresponding test report and certification conclusions, including the product qualified or unqualified, but also will give suggestions for improvement.
The sixth step is continuous supervision. UL is an ongoing regulatory certification body that continuously inspects the product quality of registered companies. Complete UL2271 certification it does not mean that the product maintains long-term safety and quality stability. Enterprises still need to strengthen the management and inspection in the production process to ensure the quality and reliability of the product.
Balance car battery UL2271 certification is very necessary, in line with the certification standards of the product can not only more easily obtain the trust of consumers in the market, but also can play a positive role in maintaining the brand image and product quality stability. Therefore, enterprises should pay attention to the input of technical force and quality management in product design and production, and improve product quality as much as possible, so that it is no longer difficult to pass UL certification.
UL2271 certification what items are tested for products?
1. overcharge (single circuit board fault);
2. Short circuit (single circuit board fault);
3. Over-discharge (single circuit board failure);
4. Temperature test (the temperature shall meet the requirements of Table 26.1, 26.2 parts and contact surface temperature);
5, unbalanced charging (one cell discharge, other cells discharge to 50% of capacity, with the specified charger charging);
6. Withstand voltage test (this test is required only when the voltage is greater than 60V);
7. Insulation resistance test (this test is required only when the voltage is greater than 60V);
How to ensure one pass in the test process?
In order to improve the test pass rate of this standard, it is suggested that:
1. Battery protection board overcharge, short circuit, over discharge secondary protection;
2, increase the battery temperature monitoring function, over temperature can not charge and discharge;
3. Add a communication line to the battery to transmit the battery information to the balance car controller, over-temperature alarm, etc;
4, battery shell and plug to do * processing;
5. The electric core is separated by the bracket to improve the passing rate of mechanical tests such as vibration and extrusion;
6 Recommendations lithium battery core, protection board, wire and interface adopt UL certification(Easy to change from manufacturer)
the battery test of the balance car is basically the same as the whole car test. As long as the parts adopt qualified products, the customs clearance test is not difficult. Many explosion accidents of the balance car reported before are more caused by the enterprise cutting corners in order to seek benefits. Enterprises should guide production in accordance with standards and improve the quality of related products is a necessary condition for the sustainable development of the industry.
Above is introduction to UL2271 by Anko Jie Testing and Certification, for reference only, some of the material comes from the Internet and does not represent the point of view of Ancor's detection technology and is responsible for its authenticity. If you are involved in the content of the work, copyright and other issues, please contact us within 30 days, we will delete the content in the first time!
