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On February 23, 15 people were killed and 44 injured in a spontaneous combustion accident involving electric vehicle charging in Nanjing. This accident has once again raised concerns about the safety of electric vehicles - electric vehicle fire accidents have been repeatedly banned in mainland China, and battery accidents are "fire in the fire".
Continental electric vehicles mainly use two types of batteries: lead-acid batteries and lithium batteries. Lead-acid batteries have a long history and mature and reliable technology, but they have low energy density and limited range.
Lithium batteries have high energy density and can achieve longer battery life, but the safety performance is uneven and the quality is worrying.
This situation is expected to change after BYD's strong intervention in the field of electric vehicles. A few days ago, BYD and Lima Company launched an electric bicycle with full "combat effectiveness" - H5 third-generation voyage version.
The car is equipped with a high-safety battery developed by BYD for new energy passenger vehicles, with a range of up to 500 kilometers on a single charge.
This is mainly due to the power battery that BYD equips it with - 46V120Ah lithium iron phosphate blade battery. As an automotive-grade battery, the safety performance of blade batteries is much higher than that of ordinary lithium batteries for electric vehicles.
The blade battery has a modular-free design with high mechanical strength, which is optimally matched to thermal management and power distribution systems, and even in the event of external short circuits or mechanical damage, there is little fire, and the heat release is properly managed to ensure safety.
At the same time, the energy density of blade batteries, which is several times that of lead-acid batteries, can also achieve a long range. In the field of electric vehicles, the combination of the two is undoubtedly an epoch-making progress.
It is foreseeable that the intervention of BYD's automotive-grade batteries will reshape the technical interface and market structure in the field of electric vehicles.
This not only means that the safety performance of electric vehicles will be comprehensively improved, but also will accelerate the elimination of those low-quality light electric vehicles, and promote the development of the industry towards standardization and standardization.
The strong alliance with BYD also gives electric vehicle companies such as Lima the opportunity to reach a new level in product strength.
We hope to see more auto companies actively involved in the field of electric vehicles to provide more cost-effective and safer travel options for the public. Manufacturers should put safety and quality first, and should not compromise quality just because the price of electric vehicles is low.
Regulators should also strengthen the supervision of electric vehicle batteries, establish a strict market access mechanism, make high-quality batteries mainstream, and expel bad batteries from the market.
It can be expected that with the active intervention of car companies, electric vehicle battery technology will make great progress, and the battery energy density, cruising range and safety performance will be greatly improved.
The low-speed electric vehicle market will also usher in a new round of standardized development. Let's look forward to the arrival of an era of electric mobility with safe charging and longer battery life.
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