Interpretation of New Standard: Lithium-ion Cells and Batteries Used in Self-balancing Vehicle—Safety Requirements
Interpretation of New Standard: Lithium-ion Cells and Batteries Used in Self-balancing Vehicle—Safety Requirements,
Lithium-ion Cells and Batteries,
▍What is KC?
Since 25th Aug., 2008，Korea Ministry of Knowledge Economy (MKE) announced that the National Standard Committee will conduct a new national unified certification mark — named KC mark replacing Korean Certification during the time between Jul. 2009 and Dec. 2010. Electrical Appliances safety certification scheme (KC Certification) is a mandatory and self-regulatory safety confirmation scheme according to Electrical Appliances Safety Control Act, a scheme which certified safety of manufacture and sale.
The difference between mandatory certification and self-regulatory (voluntary) safety confirmation：
For the safe management of electrical appliances, KC certification is divided into mandatory and self-regulatory (voluntary) safety certifications as the classification of danger of product.The subjects of Mandatory certification is applied to electrical appliances which its structures and methods of application may cause serious dangerous results or obstacle such as fire, electric shock. While the subjects of self-regulatory (voluntary) safety certification is applied to electrical appliances which its structures and methods of application can hardly causes serious dangerous results or obstacle such as fire, electric shock. And the danger and obstacle can be prevented by testing the electrical appliances.
▍Who can apply for KC certification：
All legal persons or individuals both at home and abroad who are engaged in manufacturing, assembly, processing of electrical appliance.
▍Scheme and method of safety certification：
Apply for KC certification with product’s model that can be divided into basic model and series model.
In order to clarify model type and design of electrical appliances, an unique product name will be given according to its different function.
▍ KC certification for Lithium battery
- KC certification standard for lithium battery：KC62133:2019
- Product scope of KC certification for lithium battery
A. Secondary lithium batteries for use in portable application or removable devices
B. Cell is not subject to KC certificate whether for sale or assembled in batteries.
C. For batteries used in energy storage device or UPS (uninterruptible power supply), and their power which is greater than 500Wh are beyond the scope.
D. Battery whose volume energy density is lower than 400Wh/L comes into certification scope since 1st, Apr. 2016.
▍Why MCM?
● MCM keeps a close cooperation with Korean labs, such as KTR (Korea Testing & Research Institute) and is able to offer the best solutions with high cost performance and Value-added service to clients from the point of lead time, testing process, certification cost.
● KC certification for rechargeable lithium battery can be gained by submitting a CB certificate and convert it into KC certificate. As a CBTL under TÜV Rheinland, MCM can offer reports and certificates which can be applied for conversion of KC certificate directly. And the lead time can be shortened if applying CB and KC at the same time. What’s more, the related price will be more favorable.
Standard Review
The new standard GB/T 40559：Lithium-ion cells and batteries used in self-balancingvehicle—safety Requirements has been released on the official website of Standardization administration of the P.R.C. in Oct 11th, 2021. This standard will come into effect in May 1st, 2022. This passage is giving a thorough interpretation of the GB/T 40559 for enterprise’s needs in product design and manufacture.
Scope of Standard
This standard offers regulations on safety requirements of Lithium-ion cells and batteries used in self-balance cars. It is also applicable to the Lithium-ion cells and batteries used in electric skateboard without auto-balance performance.
The items need extra attention (See all test items in the following annexed from): The items with a high probability of test failure are: external short circuit, thermal abuse and projectile, heavy impact (cylindrical cell)； 7.6, the cells applicable to the impact/ squeezing test items are the same as UN38.3: except for the cylindrical cell with a diameter larger than or equal to 18mm for the weight impact test, all other cells are subjected to the squeeze test.
