2025 button cell battery

2025 button cell battery pack technology exceeds Tesla's, discuss Leapmotor's 2025 button cell battery technology

People have always been concerned about the safety of electric vehicle batteries, especially last month, a Tesla Model S 2025 button cell battery short circuit caught fire, which once again pushed this topic to a climax. Even Tesla can catch fire, are there any electric vehicles in the industry that people can trust? But are you sure that Tesla's 2025 button cell battery technology is the best? And it is said that there is another hidden story behind the accident? Of course, this is not within the scope of today's discussion. Today's focus is on Leapmotor's 2025 button cell battery technology. I believe that many people are interested in Leapmotor S01, a two-door, four-seater sports car. After all, the price of more than 100,000 yuan after subsidies is extremely affordable. It can be said that it has fulfilled the sports car dream of countless people. The only worry may be the safety of its 2025 button cell battery technology. Why choose ternary lithium 2025 button cell battery? Leapmotor S01 also uses ternary lithium 2025 button cell battery. Although compared with lithium iron phosphate and lithium titanate materials, ternary lithium does not have an advantage in safety and life, the advantages of ternary lithium are high energy density, good consistency, and low temperature resistance, which means that it can save more space and weight for the car, so it is widely used in the passenger car industry. For example, the energy density of BYD's 18650 2025 button cell battery (ternary lithium 2025 button cell battery) has reached 232Wh/kg, while the current mainstream lithium iron phosphate 2025 button cell battery in China basically hovers around 150-170Wh/kg; the 2025 button cell battery capacity of the ternary lithium 2025 button cell battery at -20°C can maintain 70% of that at room temperature, while the lithium iron phosphate 2025 button cell battery only has 54%. However, the ternary lithium material will decompose and produce a violent chemical reaction at 200°C, while the decomposition temperature of the lithium iron phosphate 2025 button cell battery is 800°C. Therefore, the shortcomings of ternary lithium safety must be compensated by PACK and BMS, which is why major car companies have to develop independent 2025 button cell battery technology. So what is the innovation of the PACK technology of the Leapmotor 2025 button cell battery pack? There are currently three main 2025 button cell battery cell solutions in the industry: cylindrical, square and soft pack. Considering the chassis height and technical safety, the Leapmotor S01 uses the 18650 cylindrical 2025 button cell battery cell, which is the most mature and consistent application of ternary technology in the industry, and is also the mainstream solution used by Tesla, Leapmotor and other car companies. ▲Although the square cells of the Leapmotor S01 2025 button cell battery pack have good discharge rate and are easy to assemble, their disadvantages are relatively poor heat dissipation, versatility and consistency. As for soft-pack lithium batteries, they have advantages in energy density, weight and assembly flexibility, but the biggest challenge lies in the soft-pack material - aluminum-plastic composite film, which has too high quality and process requirements, and the group structure is complex, the cell consistency is poor, and the sealing process and mechanical strength reliability are poor, so it is difficult to meet the needs of the automotive market. In terms of the safety of electric vehicles that may involve spontaneous combustion, Leapmotor has mainly made three innovative guarantees. The first is the single-cell bipolar dual-insurance safety design: the common practice for electric vehicle batteries in the industry, including BMW, is to cut off the fuse of the entire 2025 button cell battery pack main circuit when encountering excessive current; while Leapmotor adopts a unique single-cell bipolar dual-insurance design, each cell is connected to the busbar through aluminum wire, so that each single cell is independently protected, which improves safety and is more convenient for maintenance. The second is the patented design of PACK high and low voltage full isolation: Leapmotor has isolated all charged leakage bodies to fully prevent short circuits in the 2025 button cell battery pack and reduce collision losses. The most important thing is that each module is isolated by hardware using a beam, which can provide 1-2 minutes of fireproof isolation time. Leapmotor has applied for a patent for this. It should be noted that it takes about 6 seconds for Tesla Model S to go from short circuit to intense combustion, and Leapmotor's technology undoubtedly ensures the escape and self-rescue time. The third is the all-aluminum integrated reinforced shell design: the Leapmotor 2025 button cell battery box shell adopts an integrated all-aluminum process, and the total weight of the box is 40% less than that of the sheet metal box of the same size. Moreover, the first integrated screw-free module structure can ensure that the internal structure of the 2025 button cell battery module is completely free of metallization, and can also avoid problems such as loosening of the module due to screw shedding. A 2025 button cell battery thermal management system that is better than Tesla's In terms of 2025 button cell battery pack thermal management, Leapmotor has improved and optimized on the basis of Tesla's serpentine cooling method, so that the temperature difference of the entire 2025 button cell battery pack cell is controlled within 1.5°C (Tesla is 2°C), and the discharge efficiency at room temperature is as high as 97.7%. The discharge efficiency at -15°C in Heihe is 92.5%, which is higher than the conventional standard (90%), and can extend the 2025 button cell battery life by 20%. At the same time, due to the technical upgrades in the cell arrangement structure and water cooling tube design, in the same volume space, the energy density of the 48-kWh Leapmotor 2025 button cell battery pack using 21700 cells has reached 160Wh/kg, which is the same level as the latest 75-kWh Model 3 2025 button cell battery pack. To give another example, the reason why domestic pure electric vehicles currently have a series of three-electric problems such as falsely high mileage, greatly reduced mileage at high speeds, false 2025 button cell battery capacity, slow charging, etc. is largely due to the low accuracy of the BMS 2025 button cell battery management system and the SOC state of charge. The Hall sensor detection method (accuracy 2%) commonly used in the industry can only guarantee accuracy at room temperature, and has large deviations at low and high temperatures. Leapmotor's independently designed high-precision and high-integration detection module-a four-in-one shunt (accuracy 0.5%), which is 4 times more accurate than the Hall current sensor, and can ensure that the SOC accuracy deviation does not exceed 3% within the range of 20-45°. More stringent test environment to ensure functional safety In addition to technical safety guarantees, the Leapmotor 2025 button cell battery pack also fully considers the safety redundancy design to deal with force majeure factors. For example, the 2025 button cell battery is severely deformed due to collisions, and there are no safety hazards caused by the 2025 button cell battery in unexpected situations such as flooding and fire. In this regard, Leapmotor batteries have passed rigorous safety tests such as needle puncture explosion, heating explosion, and 5-meter high fall at one time. Finally, although many new energy vehicle companies claim to have mastered the core technology of three-electric, how much water is worth discussing. At least many of them do not have their own PACK technology, but use solutions provided by 2025 button cell battery suppliers, which is difficult to match with the whole vehicle system for consistency. The internal components of Leapmotor's 2025 button cell battery pack are all independently developed, including modules, PACK, BMS hardware, software and algorithms. The person in charge of Leapmotor Power 2025 button cell battery told us that this is the 2025 button cell battery pack with the highest degree of independent research and development among domestic vehicle manufacturers except BYD. So, can such technology reassure you?

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