▍Certification Overview
Standards and Certification Documents
Test standard: GB31241-2014: Lithium-Ion Battery And Battery Pack Safety Requirements For Portable Electronic Products
Certification documents: CQC11-464112-2015: Secondary Battery And Battery Pack Safety Certification Rules For Portable Electronic Devices
Background and Date of implementation
1. GB31241-2014standard published on December 5th, 2014;
2. GB31241-2014standard was officially mandatory implemented on August 1,2015 ;
3. On October 15th,2015, Certification and Accreditation Administration released the technical decision on on the increase of the testing standard GB31241 for the key components of audio and video equipment, information technology equipment and telecommunications terminal equipment. The decision stipulates all the batteries used in above-mentioned equipment should be random tested perGB31241-2014, or certified individually.
Note:GB 31241-2014 is a national compulsory standard. All the lithium battery products sold in China shall conform to GB31241 standard; This standard will be used in new sampling schemes for national, provincial and local random inspection.
▍Range Of Application
GB31241-2014 Safety Requirements for Lithium Ion Batteries and Battery Packs for Portable Electronic Products is mainly for portable electronic products under 18kg and allowed to be carried by the users. Main examples are as follows. The portable electronic products listed below do not include all products, so products not listed may also have necessity to conform to the scope of this standard.
Wearable equipment: Lithium-ion batteries and battery packs used in equipment need to meet standard requirements.
Electronic product category |
Detailed examples of various types of electronic products |
Portable office products |
Notebook, PDA, etc. |
Mobile communications products |
Mobile phones, cordless phones, Bluetooth headset, walkie-talkie and so on |
Portable audio and video products |
Portable television set, Portable player, Camera, Video camera and so on |
Other portable products |
Electronic navigator, digital photo frame, game consoles, e-books and so on |
▍Type Test Items
Battery test items |
Battery pack test item |
Protection circuit type test |
Capacity test |
Low pressure |
Over-voltage charging protection |
Normal temperature external short circuit |
Temperature cycling |
Over-current charging protection |
High temperature external short circuit |
Vibration |
Low-voltage discharge protection |
Overcharge |
Acceleration shock |
Overload protection |
Forced discharge |
Free fall |
Short circuit protection |
Low pressure |
Stress Relief |
High pressure resistance |
Temperature cycling |
High temperature |
Charge voltage control |
Vibration |
Washing |
Charge current control |
Acceleration shock |
Flame retardant requirements |
Discharge voltage control |
Free fall |
Over-voltage charging |
Discharge current control |
Crush |
Over-current charging |
Charge and discharge temperature control |
Impact |
Low-voltage charging |
|
Thermal abuse |
Overload short circuit |
|
Combustion |
Reverse charge |
|
|
Static discharge |
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▍Certification mode
Certification mode |
Certification process |
Certificate validity period |
Certification mode 1 |
a. Certification application b. Product type test c. Evaluation and approval of certification results d. review
|
review(Mode 1 only ) The application for review should be submitted 3 months before the expiration. The applicant can independently choose one of two review modes: First, Conduct the type test again and after the CQC qualified review, the validity of the certificate would extend for one year; Second, carry on factory inspection in accordance with the requirements of the initial factory inspection, and the certificate will effective for the long-term after CQC qualified review. |
Certification mode 2 |
a. Certification application b. Product type test c. Initial Factory Inspection d. Evaluation and approval of certification results e. Supervision after the certification |
Supervision after the certification Post-certification supervision The validity period of certificate is long-term effective under the certification mode 2 and 3, and the validity of certificate is maintained by regular supervision. |
Certification mode 3 |
a. Certification application b. Product type test c. Evaluation and approval of certification results d. Supervision after the certification
|
Supervision after the certification(Mode 3) In mode 3, the time of the first supervision and inspection should be within 3 months after the certification, if it is not completed within 3 months, the corresponding valid certificate should be suspended.
|
▍Unit Division
a. The battery and battery pack should be divided into different certification units.
b. Products of different manufacturers, manufacturing plants or manufacturing sites should be divided into different certification units.
Product name |
Principle of Certification unit division |
Cell |
1. the same positive and negative materials,the same separator, the same electrolyte; 2. the same protection devices(such as PTC,etc.); 3. the same shape (cylindrical (size must bethe same), square, soft package); 4. Assembly in the same way (winding type,laminated type); 5. Capacity distinction:
a. Cylindrical ( capacity ≤ 2400mAh);( capacity ≥ 2400mAh)b. Square and other:metal shell, soft package shell |
Pack |
1. The same protection circuit (including the type of main protection component, device layout, etc.); 2. The same way of serial and parallel; 3. Assembled in built-in or external way should be evaluated individually. |
▍MCM advantages
● Qualification recognition: MCM is a CQC accredited laboratories with contract, and is a CESI accredited laboratory. The test report issued can be directly applied for CQC or CESI certificate.
● Technical support: MCM has ample GB31241 testing equipment, equipped with more than 10 professional technicians to conduct in-depth research on testing technology, certification, factory inspection and other processes, which can provide more accurate and customized GB 31241 certification services for customers around the world.