Author ：Iflowpower – Portable Power Station Supplier
Burning the burning car does not burn people, burning bags do not burn car, do not burn. What a popular language. In fact, this is not what person is saying the segment, but the general manager of Beijing Keyi Power Technology Co.
, Ltd., the general manager of Beijing Keyi Power Technology Co., Ltd.
, who is engaged in the safety technology of dynamic lithium battery system, has recently been in 2017 International Electric Vehicle Power Lithium Battery Development and Technology Innovation Summit. Purchase the keynote speech. Tian Shu said that the three kinds of burning packets are actually the three-level goal of the safety control of the power lithium battery pack.
Casualty; the second sentence, the burning bag is not a burning car is the middle goal, that is, the battery pack is not fired, but does not ignite the vehicle; the third sentence does not burn the package is the ultimate goal, that is, in any case, the battery pack does not get fire. In order to achieve the level of compensation with the fuel car, the new energy vehicle is increasing in the challenges encountered by the power lithium battery safety under low cost, lightweight, long-lasting, fast charge, high power, etc. The security problem caused by this is also highlighted.
From the perspective of the development of recent years, the security issues of new energy vehicles are important in the form of fires in the public and widely known. Data show that a total of 29 in China's new energy vehicles occurred in China, compared with the main amount of 400,000 vehicles under the end, about 50ppm. If this ratio is calculated from 2020, the new energy vehicle guarantee reached 5 million, the fire accident is equivalent to 250 times.
From the consequences of various fire accidents, it is difficult to avoid major casualties in this frequency, and the consequences will be unimaginable. In general, the thermal out of the power lithium battery is a chain reaction initiated by the side reaction, and the heat generated can increase the battery temperature to 400-1000 degrees Celsius. From the thermostat mode of the power lithium battery, it is important to cause thermally incentives, electroicores, mechanical incentives, etc.
, their individuals may be overheated, overcharge, short-circuit, and mechanical trigger. Therefore, the slave, electricity, and heat is separated from the source, the battery pack, the whole vehicle protection, BMS management is controlled by the safety strategy level, and the BMS is controlled, and it is a hot and uncontrolled, hot diffusion. , Prevent engineering management ideas in fire.
Of course, different types of dynamic lithium batteries have different thermal out-of-control reaction mechanisms, according to their characteristics, corresponding refinement control measures. At the meeting, Vice President of the R & D Department from Teeng New Energy Automobile Co., Ltd.
was analyzed. The safety prevention and control of the teeng dynamic lithium battery was first from the safety design, that is, considering the power lithium battery. Several aspects of chemical safety, structural security, electricity safety, functional safety.
On this basis, the electrical core impact, the electrical core extrusion, the module pressure, the module flat press, the flat pressure, the needle, the forward shock, the system is inverse, the system is shocked, and the fire Waiting for various experiments to achieve the highest safety standard. The world's famous powered lithium battery manufacturers will be inhibited from material security, battery design, battery management. Matsushita Electric Electromechanical (my country) Co.
, Ltd. Secretary Wu Jie explained that the dynamic lithium battery must perform thermal management design, the anti-anti-anti-chain reaction mechanism of the lithium-ion battery is selected to block the thermal out-of control chain Reaction. In detail, including the doping of the positive and negative electrode and coating, an electrolyte flame retardant additive, and a polymer and solid electrolyte, etc.
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