How big is the gap between Han and Model 3 in three-electricity technology?
Looking at how a new energy vehicle is, the core is still inseparable from the three-electricity system of battery, motor and electronic control. , followed by NVH performance, intelligence level, functional configuration, appearance design, space, etc. We use BYD Han and Tesla Model 3 to make a horizontal comparison, and the gap is immediately obvious.
1. Comparing battery technology
Tesla did not independently develop power batteries. In the past few years, it mainly purchased Panasonic’s ternary lithium batteries. After Model 3 began to be produced in China in 2019, , Tesla cooperated with LG to purchase lithium iron phosphate batteries, and later cooperated with third-party battery manufacturers such as CATL.
In contrast, BYD's batteries are completely independently developed and produced. In terms of battery technology, it can be said that this is BYD's specialty. In the era of 2000, BYD started by relying on mobile phone batteries. At that time, Nokia Mobile phone giants such as Motorola, Ericsson, etc. have all cooperated with BYD, which also laid the foundation for BYD to enter automotive power batteries later.
BYD Blade Battery will be officially put into mass production in 2020, and will be used in many new models such as BYD Han and Seal. Let’s see how awesome the Blade Battery is?
In terms of battery technology, Blade Battery pioneered the "direct cooling and direct heating" technology, which sounds very complicated. Simply put, this technology greatly improves the efficiency of battery heating and heat dissipation, which not only ensures that the battery The charging and discharging performance in extreme low-temperature and high-temperature environments also improves battery life and safety.
In terms of battery life, the blade battery can be charged more than 3,000 times, which is almost a thousand times more than the ternary lithium battery. The battery life has been greatly improved.
In terms of battery safety, blade batteries have been upgraded on the basis of lithium iron phosphate batteries. The chemical activity of the battery cathode material is relatively stable. There is no risk of damage under safety tests such as acupuncture, overcharging, and extrusion. Fire and combustion maintain good stability.
In terms of battery life, judging from the "2022 New Energy Vehicle Winter Test Results" announced by Chedi, in an environment of minus 15 degrees, the battery life achievement rate of the BYD Han EV four-wheel drive version is above 60, especially Tesla Model 3 and Model Y have a battery life achievement rate of less than 50%. I also looked at the battery life performance of many car owners on daily urban roads. The gap in battery life achievement rate is not very big, but the advantage of Han EV is still slightly obvious.
In terms of battery technology, the advantages of blade batteries are indeed obvious. Therefore, Tesla and BYD have reached a battery supply agreement, and the Berlin factory in Germany has purchased the first batch of blade batteries.
2. Comparison of motor technology
In terms of motor technology, both Tesla and BYD are independently developed and produced. The stator and rotor are the core of the motor and determine the performance of the motor. In the stator In terms of coil layout, the motor power of Tesla and BYD are both at the leading level in the industry, and they are indistinguishable.
To say which one is better, you can only look at the overall performance. Tesla mode3 rear-wheel drive version can accelerate from 0 to 100 mph in 6.1 seconds, and BYD Han Seal can accelerate from 0 to 100 mph in 7.5 seconds. Of course, this is not good. In comparison, after all, the Seal vehicle is more than 100 kilograms heavier than the Model 3, and different car companies have different emphasis on electronic control and performance design. From this point of view, Tesla has a slight advantage.
In terms of rotor technology, BYD is slightly better than Tesla in terms of NVH noise processing and energy saving. In order to improve NVH performance, Tesla designed thicker sound insulation cotton on the inside of the wheels.
3. Comparison of electronic control systems
Tesla independently developed BMS battery management technology. Early Tesla battery packs were composed of more than 7,000 18650 batteries. Each battery All require an independent and precise management and control system. It can be said that electronic control technology is beyond the reach of other car companies, and this was also forced out back then.
Simply put, BMS battery management technology can accurately and efficiently manage batteries, prevent battery overcharge and over-discharge, reduce battery loss, and improve battery endurance and battery life.
BYD's electronic control system is still independently developed, and has released automotive-grade IGBT4.0 technology, intelligent torque control system iTAC technology, etc. Simply put, it means faster charging and lower energy consumption.
4. Comparison of Intelligent Assisted Driving
Tesla has independently developed Autopilot assisted driving technology. Tesla has been aiming for "unmanned driving" from the beginning. It can be said that L3 The technology within the level is already very mature. For users, the key is to see the actual use effect. It is easy to see the assisted driving level of a car in complex road conditions.
Having driven a friend’s Model 3, I have a deep impression that in curves, intersections with a lot of people and traffic, Model 3 follows and turns very naturally, and is closer to an experienced driver. Excellent driving experience, even if the curve is sharp, it can negotiate the corner perfectly without human intervention. In these aspects, Tesla's assisted driving technology has advantages over many car companies.
5. Comprehensive comparison
In terms of appearance design, many people say that Tesla is more avant-garde, while others say that BYD Han is more stylish. It varies from person to person, and everyone’s appreciation level, They all have different preferences, so it's hard to compare.
In terms of interior, space, and functional configuration, BYD Han has a slightly larger space, relatively rich functions, and a more generous interior, which is more in line with Chinese people's preferences and car needs.
In terms of cost performance, car maintenance costs, product strength, etc., comparing two cars with similar power performance and cruising range, even after Tesla cuts prices, the starting prices of BYD Han and Seal are lower than Tesla Model 3 .
It is worth mentioning that after Tesla’s price reduction, the rear-wheel drive version of the Model 3 is priced at 229,900, while the BYD Han EV and Seal, which are the benchmark Model 3, are also priced at around 220,000. The price difference It was already very small, and this price cut came unexpectedly.
“The price was drastically reduced without any warning. The Model Y has only been driven for more than 30 kilometers, and the price of the new car was directly reduced by 19,000. I feel very wronged.” A car owner who just picked up the Model Y complained. In just 3 months, the price of Tesla Model 3 has been reduced by nearly 50,000, and the price of Model Y has been reduced by 57,000. After the significant price reduction, many owners of new cars and Tesla second-hand car dealers are very uncomfortable, but the most uncomfortable thing is New energy "friends".
“Raw materials are rising, state subsidies are cancelled, Tesla is sinking, BYD is rising”
It must be said that Tesla’s cost control is very good, and there is still room for it. To fight a "price war", Tesla's global sales in 2022 will exceed 1.3 million vehicles. In comparison, BYD's total annual sales will exceed 1.8 million vehicles. In the domestic market, this fully shows Tesla's situation. It is also a helpless move forced by the market environment.
From the perspective of daily maintenance costs and the ratio of parts to parts for later repairs, BYD’s overall cost is also lower than Tesla. BYD has laid out different models for different car use scenarios, such as pure electric models, plug-in hybrids, low-performance, high-performance, etc., to fully meet user needs and have more advantages in terms of product strength. But in terms of brand effect, Tesla's advantage is beyond doubt.
In short, Tesla’s main advantages lie in brand influence, assisted driving technology, electronic control technology, etc., while BYD’s main advantages lie in battery technology, independent research and development of complete vehicles, and high production levels. The advantages in cost performance, functional configuration, space, interior, car maintenance cost, practicality, etc. are also obvious.
As for how to choose between the two models, you still need to make a comprehensive choice based on personal car use scenarios and personal preferences, combined with the advantages and disadvantages of different models. For example, if you don’t care about face and don’t have much interest in assisted driving If demand is more about practicality and cost-effectiveness, then BYD Han may have more obvious advantages. Otherwise, choose Tesla.