The capacity of the Tesla battery is 80 kWh, and the battery board is made of 7104 18650 lithium batteries. The Tesla battery board looks very big. Its battery board is composed of 16 batteries connected in series, and each battery is composed of 444 lithium batteries, each with 74 cells connected in parallel.
The overall replacement of a Tesla battery costs around 170,000 RMB:
1. Tesla unit batteries are made up of more than a dozen small packages, and each small package is made up of more than 70 parts. pieces. Battery composition. The battery module in the small bag costs around 2,000 yuan. Tesla Battery Life;
2. The battery capacity of Tesla cars is generally between 15 and 60 kWh. The capacity directly affects the maximum output current and working time, that is, a large capacity battery can release a co valueurant larger, or the same charge can last longer;
3. the better, as long as the voltage of large-capacity batteries is stable and does not exceed the standard, large-capacity batteries only need stable voltage, but it will affect the life of the battery. It is not good for car batteries to be too big. or too small;
New energy electric vehicles are now increasingly the first choice for many people to buy a car. It's smarter and more economical than a gas car, but the battery is. still a big problem, such as battery life, density, weight, price and safety. In fact, there are many types of energy batteries. Today I'm going to tell you about the different types of new energy batteries currently available.
Thus, current power batteries generally includefollowing types, namely ternary lithium batteries, lithium iron phosphate batteries, lithium cobalt oxide batteries, nickel metal hydride batteries and solid state batteries. Among them, new energy trams generally use ternary lithium batteries and lithium iron phosphate batteries, which is called the "two heroes competing for hegemony".
Ternary lithium battery: The typical battery is CATL's nickel-cobalt-manganese series. There are also nickel-cobalt-aluminum series in the industry. Nickel is added to the battery to increase the battery's storage capacity and improve its lifespan.
It is characterized by small size, light weight, high energy density, approximately 240 Wh/kg, poor thermal stability and is more prone to spontaneous combustion problems. It resists low temperatures but not high temperatures. The lower limit of low temperature use is minus 30°C, and the power is attenuated by about 15% in winter. The thermal runaway temperature is around 200°C-300°C and the risk of spontaneous combustion is high.
Lithium iron phosphate battery: refers to a lithium ion battery using lithium iron phosphate as the positive electrode material and carbon as the negative electrode material. Compared with ternary lithium batteries, its thermal stability is better and its production cost is lower. Additionally, the lifespan of lithium iron phosphate batteries will be longer, typically 3,500 times, while ternary lithium batteries typically start to decay around 2,000 times when charging and discharging.
Lithium cobalt oxide battery: Lithium cobalt oxide battery is also a branch of lithium ion battery. Lithium cobalt oxide batteries have ae stable structure, high capacity ratio and outstanding overall performance. However, lithium cobalt oxide batteries have poor safety and high cost. Lithium cobalt oxide batteries are mainly used for small and medium-sized batteries. They are a common battery in electronic products and are not generally used in cars.
Nickel-metal hydride battery: Nickel-metal hydride battery was theA new type of green battery developed in the 1990s, which has the characteristics of high energy, long life and of an absence of pollution. The electrolyte in nickel-metal hydride batteries is a nonflammable potassium hydroxide solution, so even if problems such as a battery short circuit occur, it will generally not cause spontaneous combustion. Security is guaranteed and the processmanufacturing is mature.
However, nickel-metal hydride batteries have average charging efficiency, cannot use high-voltage fast charging, and their performance is much worse than lithium batteries. Therefore, once lithium batteries are widely used, nickel-metal hydride batteries. batteries can also be replaced gradually.
The presentations above are all about liquid batteries, but what about solid-state batteries?
Compared with liquid batteries, solid-state batteries have certain advantages such as long battery life, low cost, high safety and longer service life. However, as a new technology, solid-state batteries are still in the research and development stage, the technology is not yet mature, and the production cost is relatively high.
ToAt present, domestic and foreign automobile manufacturers are also actively overcoming the technical problems of solid-state batteries, including some manufacturers such as Weilai and CATL are actively developing solid-state batteries. In February 2023, David Moss, Nissan's senior vice president of European R&D, said that Nissan had successfully developed an all-solid-state battery.
Previously, CATL also launched a new product called "Condensed Matter Battery", which can achieve an energy density of 500 Wh/kg, which is nearly 1.5 times the energy density of lithium batteries. current ternaries. But this is not a semi-solid battery in the traditional sense, but a new form of battery.
Currently, the range of most liquid batteries is only between 400 km and 600 km. The range of solid-state batteries can easily exceed 1000 km, and the charging speed is more than 3 times faster than liquid batteries. batteries.
If solid-state batteries are widely used in new energy vehicles, it will greatly accelerate the development of new energy vehicles. We look forward to all the companies showcasing their talents to see if solid-state batteries will become the solution. light of a new energy.
After all, with the development of new energy vehicles, the requirements for batteries will only become higher and higher. For the industry, technological iteration will bring more value addition to the industry. the mode and quality of travel are also gradually changing.
This article comes from Yichehao author Dian Pai. Copyright belongs to the author. Please contact the author for any form of reprinting. The content does not represente only the opinion of the author and has nothing to do with Bitauto