Square and circular lithium battery safety protection on what's different?

Source: 2020 - 03 - 29 that hits: times square and circular lithium battery safety protect what is the difference? Although this problem considering the square lithium-ion batteries and circular lithium batteries because of the different structure, material and reaction may have different advantages and disadvantages, could affect the safety protective measures, but personally, I think not. This means that the two kinds of battery in the vehicle's safety protection level no difference. Square lithium-ion batteries, in fact, not only the circular lithium battery, even if the problem did not mention battery soft package, in car safety protection is also the basic common. Because the three types of battery internal components ( The positive and negative, gap and the electrolyte) Is not very different and square, cylindrical lithium-ion batteries, the biggest difference lies in the soft - Pack battery aluminum-plastic composite membrane as a shell, square and cylindrical battery using metal data as a shell. Another point is that a car company will cooperate with many battery manufacturers, on the different orientation of new energy vehicles use different types of batteries. In addition to specific safety protection measures by different models is different, the concept of all protective logic is basically the same. Now the battery protection mainly summarized the main points of the first two parts of internal and external two parts, the 'outside' refers to the impact, breakdown, such as the threat of force, 'in' refers to the quantity of heat, the threat posed by attenuation. As for the question specifically mentioned in the square and circular lithium-ion batteries, lithium-ion batteries are just two representative tesla and Toyota automobile company. Use circular lithium ion battery first tesla, and Toyota use square lithium ion battery. Secondly, two big car company is from panasonic battery purchase, to ensure the quality and stability of the battery. Tesla battery tesla Model S, Model, Model 3 X since going public, product performance and store reaction over the years has shown that tesla made a fairly comprehensive protection the battery safety, reassured customers suspicion of tesla's battery. Tesla and Toyota, as a matter of fact, the battery safety protection thoughts are common, tesla battery safety protection information, online is very specific, by contrast, people are more willing to see 'traditional motors' battery safety protection idea, at the appropriate time for pure electric vehicles, Toyota's some data is only for sharing. Toyota may be the first batch will be one of the large-scale introduction of car battery. Since 1996 since the launch of its first hybrid car prius, Toyota has been exploring the battery protection technology. Now, in 2020, Toyota announced 10 pure electric vehicles, a prelude to disperse, let's meet in May of faw Toyota ze EV, vehicle positioning, vehicle is introduced, 4. 4 meters, 1. 7 meters wide, 1. 5 meters high, is said to have reached 400 kilometers, good living standards, so for the car, let us not only focus on price, and Toyota all-electric concept planning. As the battery under the threat of the two parts, Toyota's battery protection thoughts can be roughly divided into two parts: the first: ensure the safety of the battery packaging, including accidental collision, breakdown. ( External) The second: in order to ensure long battery life and the battery aging, it is necessary to monitor the temperature of the battery. ( Internal) Let the battery is a bit scary is that they can catch fire, which is unthinkable in all-electric cars. High voltage and high temperature will lead to flame spread to the whole car, in a few seconds, so Toyota believes that any external shocks will not damage the battery. Toyota's handling of the battery module is similar to the car companies' modular 'concept, namely at the beginning of the planning is to determine the width of the module and direction, to ensure the safety of the whole. Fixed 'in the traditional engine bay, other bearings can dynamically adjust the modular platform planning, let us is very simple, find the length of the car, wheelbase, even width can change, but only a strict plan battery capacity and volume, fixed cell width, will only increase the cell length increase battery life. What is the purpose of this plan? Positive impact and collision, two pieces of buffer vehicle engine compartment and the trunk, makes the traditional front collision accident harm and batteries, is not a simple surface and side touch attacks because the buffer area is small, the battery has a greater chance of loss, after a fixed width of the battery, but it is not a fixed vehicle width, Toyota can be set on the surface and air cooling pipe to maintain a buffer battery monomer and high voltage circuit.