Analysis on Fire Accident of Electric Vehicle,
Analysis on Fire Accident of Electric Vehicle,

▍What is GOST-R Declaration?

GOST-R Declaration of Conformity is a declaration document to prove goods are complied with Russian safety regulations. When the Law of Product and Certification Service was issued by Russian Federation in 1995, compulsory product certification system came into force in Russia. It requires all products sold in Russian market to be printed with GOST mandatory certification mark.

As one of methods of mandatory conformity certification, Gost-R Declaration of Conformity bases on inspection reports or quality management system certification. In addition, Declaration of Conformity has the characteristic that it can only be issued to a Russian legal entity which means the applicant (holder) of the certificate can only be a Russian officially registered company or foreign office that registered in Russia.

▍GOST-R Declaration Type and Validity

1. Single Shipment Certificate

Single shipment certificate is only applicable to specified batch, specified product stipulated in a contract. Specific information is strictly under control, such as item name, quantity, specification, contract and Russian client.

2. Certificate with validity of one year

Once a product is granted the certificate, manufacturers can export products to Russia within 1 year without limit of shipment times and quantities to specific client.

3. Certificate with validity of three/five years

Once a product is granted the certificate, manufacturers can export products to Russia within 3 or 5 years without limit of shipment times and quantities to specific client.

▍Why MCM?

●MCM possesses a group of engineers to study Russian latest regulations, ensuring latest GOST-R certification news can be shared accurately and timely with clients.

●MCM builds close cooperation with the local the earliest-established certification organization, providing stable and effective certification service for clients.

▍What is EAC?

According to The Relevant Common Criteria and Rules of Technical Regulations for Kazakhstan, Belarus and the Russian Federation which is an agreement signed by Russia, Belarus and Kazakhstan on October 18 2010, the Customs Union Committee shall devote to formulating uniform standard and requirement to ensure the safety of product. One certification is applicable for three countries, which forms the Russia-Belarus-Kazakhstan CU-TR certification with a uniform mark EAC. Regulation put into effect gradually from February 15^th 2013. In January 2015, Armenia and Kyrgyzstan joined Customs Union.

▍CU-TR Certificate Type and Validity

1. Single Shipment Certificate

Single shipment certificate is only applicable to specified batch, specified product stipulated in a contract. Specific information is strictly under control, such as item name, quantity, specification contract and Russian client. When applying for the certificate, no samples are requested to offer but documents and information are required.

1. Certificate with validity of one year

Once a product is granted the certificate, manufacturers can export products to Russia within 1 year without limit of shipment times and quantities.

1. Certificate with validity of three years

Once a product is granted the certificate, manufacturers can export products to Russia within 3 years without limit of shipment times and quantities.

1. Certificate with validity of five years

Once a product is granted the certificate, manufacturers can export products to Russia within 5 years without limit of shipment times and quantities.

▍Why MCM?

●MCM possesses a group pf professional engineers to study custom union latest certification regulations, and to provide close projects follow-up service, ensuring clients’ product enter into the region smoothly and successfully. 

●The abundant resources accumulated through battery industry enables MCM to provide efficient and lower-cost service for client. 

●MCM builds close cooperation with local relevant organizations, ensuring latest information of CU-TR certification is shared accurately and timely with clients.

According to data recently released by China’s Ministry of Emergency Management, 640 fire accidents of new energy vehicle were reported in the first quarter of 2022, a 32% increase over the same period last year, with an average of 7 fires per day. The author conducted statistical analysis from the state of some EV fires, and found that the rate of fire in the non-use state, driving state and charging state of EV are not very different from each other, as shown in the following chart. The author will make a simple analysis of the causes of fires in these three states and provide safety design suggestions.
To reduce the safety risks of the battery pack, firstly, the cell should have a high safety quality, and secondly, PCB should have a good durability. The high safety quality of the cell mainly refers to the good consistency of the cell, which means no foreign matter can enter the roll core in the production process of the cell; the good durability of the PCB mainly refers to the long cycle life and high reliability of the protection function.