There are many things in the new energy auto industry this year. We feel that the accident is very related to the limited information. In fact, in response to the size of the battery, the capacity requirements of the battery, the energy density requirements of the battery, and the energy consumption requirements of 100 kilometers, it is relatively simple to look at the overall distribution of the industry based on statistical results, and then look at the advanced typical car companies and battery companies. Level and then analyze and compare. If you think from the perspective of engineering development, it will inevitably be uncomfortable if you are more rigid. Then look at the problem from the management perspective.
From a holistic point of view, the eighth batch and the ninth batch of catalogues for new energy vehicles are exempt from taxation.
The maximum speed of 30 minutes is not less than 100km/h: continuous output to the high-speed power section of the vehicle (A00 and A0 level);
The energy density of the battery system is not less than 90Wh/kg, and is higher than 120Wh/kg by 1.1 times;
According to the whole vehicle preparation mass m, the power consumption Y of 100 kilometers under working conditions should meet the following requirements:
When m≤1000kg, Y≤0.014*m+0.5
1000 "m ≤ 1600kg, Y ≤ 0.012 * m + 2.5
m 1600kg, Y≤0.005*m+13.7
2. 100 kilometers of electricity consumption
9th batch of power consumption
The power consumption of the eighth batch
This is actually not a constraint on too many vehicles. The main reason is that the existing test methods are composed of constant velocity and working conditions. The former tends to idealize only the best data for manufacturers, and the latter is biased towards the city. Under the environment, and in the climate suitable conditions.
Since this 100-kilometer power consumption has penetrated into the industry and consumers as a reference, we can actually use this illusion. In the future, consumers will use this benchmark to measure vehicles. This data will also be used to estimate the mileage, so consumers will For vehicles above 300KM, the use of cross-regional vehicles will be required. In this case, high-speed conditions may be required for vehicles with mileage greater than 300KM. At this point, the owner will think of going to high-speed and suburban pull speeds. The demand for power consumption is limited, and there will be a big gap later, which is likely to lead to high-speed anchoring.
This gap will be relatively large. After the climatic factors are added, it may cause an accident. The value of high probability will continue to improve in the next 2 years.
Take the BMW i3 upgrade range as an example. The comprehensive data obtained by EPA is 97 miles = 156 kilometers, and the data of the 9th batch is 246 kilometers. This value should be marked on the instrument panel. Under high speed conditions, EPA test MPGe is also 10% lower.
3. Battery pack energy densityIn general, we can see the data of the 9th batch.
This is actually related to the energy of the whole package. The package is small and small, and some necessary materials are not saved: the upper and lower covers, the thermal system, the high and low voltage cable connections, and the accessory system of the module.
Since there are many indicators for evaluating the battery system, it is inevitable that the weights of other requirements of the national standard will be lowered. This is mainly because the development of ternary materials is related to the hope of reducing costs, and the follow-up is also to be revised.
The previous keywords were safety and cycle life, and then stayed on the concept of lithium iron phosphate for many years. Now it is energy density and cost, which can be understood as a process of rotation, one by one to make simple requirements become the primary solution, and then Change the target wheel.
Looking at it from another angle, it is easy to understand that managing this content is not easy. Not only must we assess the problem from our own needs, but also from the distribution of industrial development, we need detailed data, we can't run too much slower than a few core players, and we die too slowly.
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