Implementation of GB/T 34131-2023
Implementation of GB/T 34131-2023,
GB/T 34131-2023,
▍BSMI Introduction Introduction of BSMI certification
BSMI is short for Bureau of Standards, Metrology and Inspection, established in 1930 and called National Metrology Bureau at that time. It is the supreme inspection organization in Republic of China in charge of the work on national standards, metrology and product inspection etc. The inspection standards of electrical appliances in Taiwan are enacted by BSMI. Products are authorized to use BSMI marking on the conditions that they are in compliance with safety requirements, EMC testing and other related tests.
Electrical appliances and electronic products are tested according to the following three schemes: type-approved (T), registration of product certification(R) and declaration of conformity (D).
▍What is the standard of BSMI?
On 20 November 2013, it is announced by BSMI that from 1st, May 2014, 3C secondary lithium cell/battery, secondary lithium power bank and 3C battery charger are not permitted to access to Taiwan market until they are inspected and qualified according to the relevant standards (as shown in table below).
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Product Category for Test |
3C Secondary Lithium Battery with single cell or pack ( button shape excluded) |
3C Secondary Lithium Power Bank |
3C Battery Charger |
Remarks: CNS 15364 1999 version is valid to 30 April 2014. Cell, battery and Mobile only conduct capacity test by CNS14857-2 (2002 version).
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Test Standard |
CNS 15364 (1999 version) CNS 15364 (2002 version ) CNS 14587-2 (2002 version)
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CNS 15364 (1999 version) CNS 15364 (2002 version ) CNS 14336-1 (1999 version） CNS 13438 (1995 version) CNS 14857-2 (2002 version)
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CNS 14336-1 (1999 version) CNS 134408 (1993 version) CNS 13438 (1995 version)
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Inspection Model |
RPC Model II and Model III |
RPC Model II and Model III |
RPC Model II and Model III |
▍Why MCM?
● In 2014, rechargeable lithium battery became mandatory in Taiwan, and MCM began to provide the latest information about BSMI certification and the testing service for global clients, especially those from mainland China.
● High Rate of Pass: MCM has already help clients to obtained more than 1,000 BSMI certificates till now in one go.
● Bundled services: MCM helps clients successfully enter multiple markets in worldwide through one-stop bundled service of simple procedure.
The 2017 version of the national standard Technical Standard for Battery Management System of Electrochemical Energy Storage Station (GB/T 34131-2017) has been revised, and the 2023 version of the national standard Battery Management System for Electric Energy Storage (GB/T 34131-2023) has been officially released recently and will be officially implemented on October 1 this year. The new GB/T 34131 mainly has the following changes:The data acquisition error range and sampling period of current, voltage and temperature are more strictly stipulated;
The technical requirements and test methods of communication, control, insulation resistance detection, insulation voltage resistance, high and low temperature, salt-fog resistance, electrical adaptability, electromagnetic compatibility and other aspects are added;
The operating environment temperature of BMS is revised from 0~45℃ to -20~65℃. The maximum allowable error of SOE is revised from 8% to 5%. The average trouble-free working time is revised from not less than 40000h to not less than 20000h, and the operating life is not less than 10 years;
The related requirements of sampling testing have been added.
These changes will bring significant changes to BMS equipment manufacturing, engineering design, inspection, operation and maintenance. Relevant enterprises also need to pay attention to the content of the new standard in a timely manner and make preparations early.
