Service Hotline:
Mobile website
Weilai lithium iron phosphate battery technology breakthrough is expected to reduce costs to seize the low-end market
Release time:
2021-04-30 14:20
Source:
A few days ago, the public car network learned from relevant channels that Weilai plans to upgrade and optimize the current 70-degree (kWh) battery pack with lithium iron phosphate batteries. The goal is to upgrade and optimize the battery capacity to more than 75 degrees. It is planned to release new batteries in the fourth quarter of this year. 
At present, there are two technical routes for power batteries for electric vehicles, namely ternary lithium batteries and lithium iron phosphate batteries. The names of these two batteries are taken from the names of the cathode materials of their respective batteries. The ternary in ternary lithium batteries refers to polymers of nickel (Ni), cobalt (Co), manganese (Mn) or aluminum (Al), namely NCM or NCA, the suffix number 523 or 811 is the formula ratio of the three materials; and the lithium iron phosphate battery is named after the battery with lithium iron phosphate (LiFePO4) polymer. The advantages of
ternary lithium battery are high energy density upper limit and good charge and discharge performance. If it is used as an automobile power battery, its advantages of high cruising range and strong performance make it the mainstream choice of automobile power battery. However, the short board of lithium battery is high cost and relatively poor thermal stability. As an automobile power battery, it is easy to spontaneously ignite.
The advantage of the lithium iron phosphate battery is that the internal structure is stable, it has high temperature resistance, and it is not afraid of overcharge behavior. Therefore, as an automobile power battery, it is not easy to spontaneously ignite. One thing is particularly important. Lithium iron phosphate batteries do not contain the precious metal element cobalt, and the cost of raw materials is lower; from the current mainstream purchase prices of car companies, ternary lithium batteries are generally 800 yuan per unit of electricity, while lithium iron phosphate batteries The electricity per unit is reduced to about 600 yuan. The biggest weakness of
lithium iron phosphate battery is the low energy density limit, and the electrochemical activity will also decrease in low temperature environment. In winter, the battery life and charging efficiency will be significantly reduced. Tesla received concentrated feedback in the winter, and the lithium iron phosphate models used in the north have shrunk severely.
Weilai has always insisted on high-end positioning, which is the existence of the standard BBA, so it will not compromise on performance. Weilai decided to solve the performance loss problem of lithium iron phosphate in low temperature environment through technical means.
Lithium iron phosphate battery upgrade is of great significance, lithium iron phosphate battery is known for its low cost, if the success of the move, the battery cost will be reduced, which gives Weilai the ability to impact the low-end price products, to seize a greater market share. When Tesla was localized in 2020, it relied on low-cost lithium iron phosphate batteries to reduce the price of the domestic Model 3 from more than 300,000 yuan to 249900 yuan, helping Tesla to achieve an annual sales of more than 100000 vehicles in the Chinese market.
As the technical difficulties of lithium iron phosphate batteries are gradually resolved, the battery solution will also enter the mainstream of the industry. Zeng Yuqun, chairman of Ningde Times, once said that with the construction of more charging piles, the cruising range will not need to be too long, and the production demand for lithium iron phosphate batteries will grow rapidly because it is cheap enough.
Ideal Car has said that the price range of future models will be between 150000 yuan and 500000 yuan. The low-cost models of Ideal Cars use lithium iron phosphate batteries. Weilai will also use lithium iron phosphate to grab more markets. From a long-term strategic point of view, the market share will be greatly expanded, and the technological breakthrough of lithium iron phosphate batteries will accelerate this trend.
This article is from the author of the car home car number and does not represent the position of the car home.
More information
HMM Participate in The Smart Energy Week Battery Show Japan 2025
Exhibition： The Smart Energy Week Battery Show Japan 2025 Date： Feb.19~21，2025 Venue：Tokyo Big Sight East & South Halls Booth : E45-18
Which brand of Japanese Ni-MH battery is more stable and durable?
Under normal use of nickel-metal hydride batteries, generally speaking, the discharge time of power batteries with high capacity is long, and the discharge time of small capacity is short. However, there are two kinds of performance: stability and durability in the use effect. They become an important reference factor for positioning Ni-MH batteries, because if the stability and durability are insufficient, after encountering some abnormal use, Ni-MH batteries that show the battery life according to their capacity may have some variables, and even the high capacity is not durable due to insufficient stability. After testing five mainstream Japanese nickel-metal hydride battery brands, a Japanese media believes that Sanyo products are the most stable and durable.
Summary of Lithium-ion Battery Safety Test Items and Methods
Lithium-ion batteries and monolithic samples consisting of non-user replaceable batteries/lithium-ion batteries and their electronics. For non-user replaceable batteries, they should be installed in electronic products as a whole sample for the environmental safety test of lithium ion batteries in the standard. For non-user replaceable lithium ion batteries, they can be placed in electronic products as a whole sample, or the lithium ion battery can be taken out separately for the environmental safety test of lithium ion batteries in the standard. It is recommended to test as a whole sample first. As the test process may be deflated, smoke, fire or even explosion, it is necessary to take the necessary protective measures
Main battery type recycling methods and their recycling purposes
Different types of lithium batteries are widely used in different occasions, more scientific and economical recycling of waste batteries for reuse is a cause conducive to nature and human health. After hundreds of years of development, the basic recycling methods for major battery brands are the same in countries around the world. 1. dry batteries: alkaline manganese dry batteries and zinc manganese dry batteries, that is, generally referred to as carbon batteries and alkaline batteries. This type of battery is currently required to ban the use of mercury, so it is safe in life. For this reason, there is no requirement to recycle such batteries. Of course, those who are willing to recycle can engage in this aspect of business, and users do not have any in the garbage can.
Explosion-proof measures for battery and lithium battery
The safety of lithium-ion batteries has always been an important issue that plagues the industrialization of lithium batteries. The battery explosion accidents exposed in recent years are all caused by the use of lithium batteries. Compared with other types of batteries, this is determined by the special nature of lithium battery materials and processes. To this end, we should understand the knowledge of lithium battery explosion, we try to explain from the following three aspects. 1., the national standard stipulates that any part of the solid material within the battery is instantly discharged, and the distance that is pushed to the lithium battery above 25cm is called an explosion. The identification method in the experiment is: cover the experimental battery with a circular mesh so that the battery is located at the center of the circle, I .e. 25cm from any side of the mesh cover. If no solid part of the experiment passes through the mesh cover, it is proved that the battery has not exploded. Here, the "net" has a specific to show: the net wire adopts a soft aluminum wire with a diameter of 0.25mm, and the density of the net is 6~7/cm. 2. how to prevent lithium battery explosion All lithium battery explosions are caused by short circuit caused by battery heating, and the cause of short circuit and over charge, over discharge, positive and negative direct docking, electrolyte leakage and so on. Therefore, in the design of lithium batteries, the following points can be started: 1. It is forbidden to overcharge the battery to more than 4.2V; 2. It is forbidden to overcharge the battery to less than 2.75V; 3. An explosion-proof valve is installed on the metal shell; 4. Prevent short circuit in the process. The best way, of course, is to have a battery protection circuit board design. Although this will increase the manufacturing cost of lithium batteries, it is necessary for the safe use of lithium batteries. All regular lithium battery manufacturers can not avoid this design. 3. polymer lithium battery is the use of flexible packaging and polymer electrolyte made of a lithium battery products, under normal circumstances, the use of storage will not explode, unless man-made strong damage caused by its short circuit. In order to reduce the occurrence of explosion accidents, polymer lithium batteries are being used in more and more occasions. Although lithium batteries are still in the process of replacing other types of batteries, polymer lithium batteries have begun to replace ordinary lithium batteries in some areas.
Lithium Battery Market Analysis in 2020
The lithium battery industry market analysis report is an analysis of the lithium battery industry market size, market competition, regional market, market trends and the scope of attraction. It refers to the lithium battery industry market research and supply and demand forecasts, according to the market environment, competitiveness and competitors of the lithium battery industry products, analysis and judgment of the lithium battery industry products in a limited time whether there is a market, and what kind of marketing strategy to achieve sales goals or what kind of investment strategy to enter the lithium battery market. The main analysis points of the lithium battery market analysis report include: 1) lithium battery industry market supply analysis and market.
Contact Us
Tel&WhatsApp: +86-18681521828
E-mail: export@hmm-machine.com
Add.: No. 5 Weifeng Road, Niushan Wai Jing Industrial Park, Dongcheng District, Dongguan City
Links: