How power no 5 alkaline battery packs break technical bottlenecks

　　What is the bottleneck of power no 5 alkaline battery pack?

　　The key factors for the unsatisfactory development of China's energy vehicles include range, charging speed, and safety features. These three factors are caused by the inadequate technology of power lithium batteries, and therefore can also be regarded as the three technical bottlenecks of power no 5 alkaline battery packs.

　　1. Short cruising range: With the continuous advancement of technology, the cruising range of electric vehicles using lithium batteries as power source has increased from less than 100 kilometers at the beginning to about 300 kilometers at that time, and the cruising range of a single model has exceeded 400 kilometers. kilometer. However, there is still a certain distance compared with the mainstream journey of 500 kilometers for fuel vehicles at that time. This problem can be solved by using multiple strings of single cells, but the negative problem is that it is too large and makes it inconvenient for the car to travel.

　　2. Slow charging speed: Compared with the short journey, the slow charging of no 5 alkaline battery packs is a greater restriction on the development of electric vehicles. At normal speed, it takes 4 to 8 hours for the no 5 alkaline battery of an electric vehicle to be fully charged. There are also quick-rechargeable lithium batteries that can be fully charged within 1 to 2 hours, but their negative effects are huge. The lifespan will be reduced to 1/3 of the original, and the battery performance will be significantly reduced. Fuel vehicles do not have these problems. The refueling time does not exceed 5 minutes, and safety and stability can be guaranteed.

　　3. Safety functions need to be improved: Since the birth of no 5 alkaline battery packs, safety issues have always puzzled consumers. From mobile phones and laptops to now electric vehicles, safety accidents continue to occur. In addition to no reports of fires in electric vehicles from Nissan and Tesla, electric vehicles from China's Zotye and BYD, and the United States's General Motors and Fisker have all spontaneously ignited or caught fire.

　　The existence of the above three problems has caused the R&D costs of no 5 alkaline battery packs to overcome these three shortcomings to increase. High-priced products also restrict the development of power batteries and power battery electric vehicles.

　　How to break the bottleneck of power no 5 alkaline battery pack?

　　To sum up, there are three measures: ① OEMs use lightweight materials (high-strength steel, aluminum alloys, etc.) to lighten the entire body structure so that it can install heavier batteries. ②In terms of charging facilities, some manufacturers are studying fast charging technology, and some are trying to "swap" power technology. ③Power battery manufacturers are researching battery materials (positive electrode, negative electrode, etc.) to improve their specific energy.

　　At present, lightweight, fast charging, and "replacement" technologies have their effects, but the room for improvement is very limited and cannot be continuously promoted. The most promising thing is that power battery manufacturers start from the battery materials (positive electrode, negative electrode, etc.) The effect of tackling key problems is relatively objective and sustainable. Battery manufacturers are improving step by step from the battery outsourcing form (soft pack, hard pack) and battery pack linking method.

　　The bottleneck of power no 5 alkaline battery packs has not been completely broken yet, but the progress is gratifying. The specific energy of China's lithium-ion power was 80wh/kg in 2008. By the end of 2017, its specific energy had exceeded 300wh/kg, which has nearly quadrupled in 10 years.

　　Innovative ideas give rise to new batteries

　　Currently, scientists are working on developing new batteries with stronger energy storage and longer life, especially to develop batteries that are more suitable for different fields, because no battery can be suitable for all fields.

　　In the automotive industry, batteries ultimately determine the life of the car, and also determine people’s fear and anxiety about electric vehicles. To solve this problem, engineers and scientists are trying to cram more voltage capacity into batteries. Currently, a large amount of research is devoted to finding new materials and chemicals to supplement or replace the lithium-ion lattice or other parts of the battery.

　　For example, some innovative approaches can replace the traditional graphite anode lattice with silicon, which will have 10 times more lithium ions. However, silicon will expand when absorbing lithium ions, so researchers need to solve this problem; replacing lithium metal with The lattice acts as the anode, but it's possible that it can short-circuit while charging. This is a long-standing headache for battery manufacturers since the advent of lithium batteries 20 to 30 years ago.

　　Perhaps, lithium can be replaced entirely? For example, sodium or magnesium, or other substances. A foreign energy storage research joint center is using computer modeling to study specific oxide materials as cathodes corresponding to magnesium anodes. Magnesium is very advantageous because its structure allows each atom to accept two electrons, which allows magnesium to store double the charge.

　　The industry believes that due to the late start of my country's no 5 alkaline battery industry, some core technologies still lag behind the international advanced level. The top priority is not to blindly expand production capacity, but to concentrate on scientific research, complete technology accumulation, break through technical bottlenecks, and accumulate technical energy. To drive the take-off of the entire industry. At present, all parties in my country's power battery industry chain represented by lithium batteries should adopt joint ventures and cooperation to develop together.

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