Towards Internationalization - China Power Battery System Testing

With the gradual decline of subsidies, increasing energy density and reducing costs have become the focus of competition for power battery companies. The replacement of lithium iron phosphate by ternary materials has also become a new trend in the evolution of current power battery technology routes. Under such a background, the safety of power batteries cannot be separated from strict and standardized inspections.

How to regulate the quality and safety of the power battery industry is also a major concern of the entire new energy vehicle industry.

Recently, at the "REESS2018 New Energy Power Battery and energy storage battery Forum" jointly organized by TüV Rheinland Group and Guangdong Inspection and Quarantine Technology Center (IQTC) and Changchun Automobile Testing Center Co., Ltd., the participating experts separately discussed new energy vehicles. Power battery and energy storage battery industry's most concerned issues such as "post-subsidy era power battery testing standards" "power battery ladder utilization" and "trade war background, China's power battery industry's way out" and other topics accepted the OFweek lithium grid interview and exchanged opinions.

"In fact, in recent years, we have paid great attention to the internationalization of international standards and the internationalization of Chinese standards. Many domestic products and industries have exceeded the international advanced standards." Dean of Guangdong Inspection and Quarantine Science and Technology Research Institute, Guangdong Zheng Jianguo, director of the Center for Inspection and Quarantine Technology, believes that no matter whether the competition between industry and products or competition in standards, China will only have more and more confidence in the field of new energy vehicles.

Zheng Jianguo, Director of Guangdong Inspection and Quarantine Technology Center

Iron-lithium to three-way safety has become a top priority

Since last year, China's new energy vehicle development has entered an inflection point, and a series of new policies have been adjusted. The core of its content has pointed to the development direction of high energy density of power batteries, and the high-energy ternary power battery has naturally become the market darling. At the same time as the market is hot, the safety of the ternary power battery has been questioned, especially since Tesla has been repeatedly worried about the safety accidents in recent years.

Then, can the detection of the ternary power battery pass? What is the difference between their testing standards?

“The safety of products is always in the first place. From the reality, there is a certain contradiction between the energy density and safety of power batteries. Pursuing higher energy density, to achieve the same safety standards the battery factory must overcome more problems. In this regard, the Minister of the New Energy Power Battery Laboratory of the IQTC, Mo Liangjun, believes that in the case of increased energy density, how to make the battery safety test the strength and technical level of the battery factory. The testing organization only needs to do the standard control. From the laboratory's testing, it is necessary to protect the safety of the product itself and the safety inside the testing laboratory, and take safety prevention and control as a top priority.

Minister of IQTC New Energy Power Battery Lab Mo Liangjun

In reality, because battery companies and vehicle companies are increasing their energy density in order to get higher points and subsidies, it is the key to safety.

"From the actual detection situation, in addition to the replacement of iron lithium into ternary, the single cell becomes larger or the battery casing becomes lighter is an effective means to improve the energy density of the battery system. The battery pack detected by the testing mechanism is different. In the test results, because the energy density of the battery pack is high, the test results are different. But one thing is the same, it is necessary to achieve the same level of safety in the same puncture and extrusion test." Guangzhou Chinese Academy of Sciences Dr. Niu Huichang from the Industrial Technology Research Institute further explained through the testing process. The current standards do not classify or classify the increase in battery energy density. The testing methods and standards are uniform, and the safety testing is the same.

It is worth noting that the use of ternary power batteries on electric buses has become a reality. In the 307th batch of "Road Motor Vehicle Manufacturing Enterprises and Products Announcement" announced by the Ministry of Industry and Information Technology on April 13, 42 companies have applied for new energy bus products, of which 2 car companies are equipped with ternary power batteries, accounting for less than 5 %.

In this regard, Lu Jiangbo, TüV Rheinland electrical and electrical service planning manager, expressed his views, he believes that the use of ternary power batteries on electric buses will be more cautious. For this reason, the industry has stricter technical standards. The mandatory technical regulations are to ensure the safety and control of electric buses, and the state is also new to all. Energy buses are monitored and supervised. “This is to ensure the quality of the products. In addition to the more stringent safety requirements, the test standards for other aspects of the power battery for electric buses are the same as those for passenger cars.”

Lu Jiangbo, TüV Rheinland Electrical and Electronic Service Planning Manager

Wang Xuefeng, an engineer at Changchun Automobile Testing Center Co., Ltd., held the same view: "For the testing organization, there is no technical barrier or technical relaxation. What the testing organization can do is to strictly control the quality and meet the national standards. Qualified products with safety requirements can be placed on the market."

Changchun Automobile Testing Center Co., Ltd. Engineer Wang Xuefeng

Ou Lefu, chief technology officer of TüV Rheinland Shenzhen, introduced the experience of Germany. He believes that from the European standards, testing by testing institutions is only one part of it. Each car company has its own testing standards, just like BMW has BMW. The standard, Audi has Audi standards these standards are generally higher than the industry standards. European car companies pay attention to their own brand image, ensuring the safety of the battery pack is also the responsibility and pressure of the car companies.

Ou Lefu, Chief Technology Officer, TüV Rheinland Shenzhen

The use of the ladder is the standard plan to be established at that time.

According to the latest statistics, China's new energy vehicle ownership has exceeded 1.6 million, and a large number of batteries for pure electric or plug-in hybrid vehicles will enter the replacement period. These batteries that have been retired in the car will be used in cascades, and the energy storage field is considered to be the best market for these replacement batteries.

Then, is there a standard for access to the batteries used in the ladder? How to use such a battery?

Qin Keyin, General Manager of Changchun Automobile Testing Center Co., Ltd.

“How to deal with the battery in a certain period of time and a certain degree? This is a big problem facing the whole industry, and it is also a concern of the relevant national institutions.” Qin Keyin, general manager of Changchun Automobile Testing Center Co., Ltd. introduced the current power battery industry. The integration of demonstration projects by various enterprises has been organized, and the demonstration project of promoting the utilization of power battery ladders has been promoted by the state.

Zheng Jianguo further supplemented this. In his view, the use of power batteries is not the same as dealing with foreign imports and domestic conditions. Because the battery is also a solid waste, the waste battery to be treated is restricted. The state is increasingly strict with the management of renewable resources.

"Recently, we are also testing the waste of lithium batteries imported from other countries. The national environmental protection requirements are very high. If the heavy metals exceed the standard, improper handling will have a great impact on the environment. Therefore, customs and environmental protection are prohibited. On the other hand, for domestic power batteries to be processed, the third-party testing agencies of the state's functional departments will continue to pay attention to and promote the management of regulated renewable resources and formulate corresponding standards." Zheng Jianguo believes that the power battery the use of ladders requires the participation of industry chain companies, and how to extract useful materials for recycling, which is a problem that the technical department should continue to pay attention to.

Ou Lefu shared the German processing experience. He introduced that in a long period of time, Germany has accumulated rich experience in how to ensure the recycling of the entire waste in terms of systems and regulations. Germany strictly enforces the classification criteria for solid waste and conducts safe disposal. The use of battery ladders is only one part. He also believes that it is especially important to ensure that each process and method is safe. Such an experience applies equally to the recycling of other products or products from other industries.

Enhance domestic quality and make Chinese standards connect the world

Under the background that foreign automakers such as BMW, Mercedes-Benz and Ford have begun to cooperate extensively with domestic power battery companies, the recent Sino-US trade war is constantly escalating. What impact will this situation have on the new energy auto industry? Will Chinese auto companies encounter problems encountered by ZTE?

In this regard, Qin Keyin believes that the battery industry is different from the chip industry. The core technology of the chip is in the hands of foreign companies. The domestic enterprises in the field of power batteries have achieved world-class status, and even the international companies such as Samsung and Panasonic are not inferior. . On the other hand, from the perspective of market considerations, China is already the world's largest new energy vehicle market. Even if it is a trade war, it will have little impact on China's new energy automobile industry and in this area. A party that has an advantage in the market will play a competitive role in strengthening China’s strength and leadership.

Zheng Jianguo analyzed the impact of the current Sino-US trade war on the new energy auto industry from the perspective of standardization. He believes that China is now proposing to integrate the standards of the power battery industry to enhance our competitiveness. As the world's largest production base and application market for new energy vehicles, we need to internationalize China's standards and international standards.

"In fact, in recent years, we have paid great attention to the internationalization of international standards and the internationalization of Chinese standards. The gap between China and China is getting smaller and smaller. There are even many products that we have advantages or industry standards that have surpassed international standards the standard." Zheng Jianguo believes that whether the competition between industry and products is still on the standard, if we have been synchronized or exceeded in this respect, I think that no matter whether it is a trade war or a competition for many products, China will only come. The more confident you are.

Oralfu expressed the same view. He believes that there are many car companies in Germany, because most of the German car companies are re-sold to other countries in China. The impact on Chinese companies is not that great, because the main market for Chinese car companies is still domestic.

In fact, the most important thing for new energy vehicles is the power battery system, which profoundly affects the future development of the new energy vehicle industry. The power battery has a direct impact on the safety, cruising range, driving comfort and cost of the whole vehicle, and is an integral part of the core competitiveness of the new energy vehicle. As a result, countries around the world have set strict entry standards for in-vehicle rechargeable energy storage systems (REESS).

In order to promote the development and quality improvement of the new energy automobile industry, in this forum, IQTC and TUV Rhein formally signed a strategic cooperation agreement to establish a new energy power battery joint testing center, and the two sides jointly responded to the development and challenges of power batteries. The establishment of the joint testing center will provide the public power professional testing laboratory with wide coverage, comprehensive capabilities, complete qualifications and strong credibility for the power battery industry, which will greatly promote the development of the industry.

The page contains the contents of the machine translation.