To buy a tram, the most irritating thing is "mileage anxiety"!
A single recharge cannot complete a single long-distance task, but pure electric vehicles are recognized as "future cars".
This is the case in the industrial world, and often the last problem is the most difficult problem to solve. In order to make electric vehicles grow a "iron footboard that can run far", countries around the world are trying to break through the limits.
In October last year, the Ministry of Industry and Information Technology issued the "Notice on Launching the Pilot Work on the Application of the New Energy Vehicle Power Exchange Mode", and decided to start the national pilot work of the application of the new energy vehicle power exchange mode.
So the Ningde era power exchange, specially launched EVOGO (Lexing power exchange) modular "chocolate power exchange block".
A single "chocolate swap block" can provide a range of about 200 kilometers, and claims to be able to adapt to the models developed by 80% of the world's pure electric platforms that have been listed and will be listed in the next 3 years.
Seeing these many car owners is estimated to be happy for a wave, and the tram will no longer have to be afraid of charging problems in the future
But think about it carefully, so can this power exchange facility really solve the problem of electric vehicle endurance?
Can the owner really stack the battery at will with the change of battery life?
Today, Tiger will come to talk to the owners of the car, whether this modular power exchange is useful.
Modular like chocolate
3 minutes to change the power maximum range of 600 km
When you have considered the tram, you know that the capacity and mileage of the tram are set "in the mother's womb", no matter how you use it, the battery pack will only have this amount of power after all.
The "chocolate battery block" launched by the Ningde era seems to solve this problem.
Each battery pack designed for the "vehicle-electricity separation" mode in the NINGDE era is designed as two square parts on the left and right, and the three battery blocks are arranged together to be similar to a plate of chocolate we bought.
Among them, the energy density of each battery is 160Wh/kg, the volume energy density is 325Wh/L, and the corresponding endurance of each battery block is about 200km. Therefore, according to the display at the press conference, the battery pack is superimposed in series, and the three battery blocks can achieve an endurance of about 600km.
It can be said that if the Ningde era can roll out this technology on a large scale, the anxiety and charging problems of electric vehicle endurance can basically be perfectly solved.
But the ideal is the ideal after all, can this kind of "great unification" technical standard really be landed?
It may not be so simple in reality!
Electric vehicle battery replacement is not like toy battery replacement
Car companies will take their own lives in order to meet the "standards"
After watching the newly released "chocolate battery" in Ningde, many car owners feel that the tram "change" is not so difficult to do.
Indeed, the power exchange thing is almost everywhere in our actual life!
Any home appliance that uses batteries is also using the concept of "power exchange"! Whether it is remote control, calculator, electric toy, electronic clock... So "changing electricity" is not a new thing.
But for electric vehicles, it is almost difficult to "change the power" in the sky!
To change the power, at least the size of the battery must be the same, the voltage must be the same, right? For example, all the "AAA batteries" under the sky are the same size, and they are all 1.5V voltage. In addition, for the vehicle itself, the interface of the battery, the communication standard of the battery... It all has to be exactly the same! Because if you don't do this, the battery can't be "universal".
This means that almost all brands of electric vehicles, the chassis architecture must be "torn down and restarted". And electric toys a truth: everyone uses the "No. 5 battery", then the volume and shape of the battery compartment must be exactly the same, right?
The second is the voltage problem of the battery, and the working voltage of all manufacturers must be consistent.
At present, the bus voltage of mainstream electric vehicles is in the 400V grade, and the trend in the future is high voltage 800V, unified "power exchange" battery, voltage in the end "listen to whom"? ——But where the battery module is the same, the chassis is similar, then the car companies are not as long as they concentrate on building the hull stack configuration is not finished.
Conversely, for some companies with advanced technology, this may mean losing the advanced advantage of technology.
At the traditional manufacturing end, OE is basically strong relative to suppliers, and the same product has redundancies such as one supply and two supply. However, if you directly join this so-called "power exchange system", basically the battery will be strongly bound, and even the entire three-electric system will be completely monopolized in the future.
In the end, it becomes a supplier asking automakers to develop their own products, which is completely inverted.
The big companies that are in charge of the Eight Classics will not come to dump you.
The "rent electricity" model may just be a gimmick
"Shared batteries" have to catch up with gas stations to get started
Do you remember the "shared charging treasure" that is everywhere but not everywhere?
As long as it is the product of the emergence of the "sharing economy", purely on the concept, the model is indeed a very good choice, and the owner can choose according to his own use needs.
But in fact, when it is applied, it will encounter a pile-up problem.
At present, all parts of the country are popularizing the charging pile climbing stage, regardless of whether you have a community parking space or a commercial parking lot, as long as there is a demand, it must be installed. (Shopping malls have the number of charging parking space requirements) Driven by this premise, the country has also spent nearly 3 years to get more than 2 million charging piles, and continue to add 50,000 units every month, so the probability that subsequent owners can't get the charging pile will only become smaller and smaller, and the cost of a single charging pile will become lower and lower.
The construction of a replacement power station is basically similar to the construction of a gas station.
The construction cost of a substation will reach nearly 6 million yuan, and such a large cost to make the scale large is the biggest problem. Without scale, there is no convenience, the owner of the car to change the electricity to spend time and cost more, the replacement power station passenger flow becomes smaller, which is a dead cycle. Continuous massive burning of money also has to have a profit expectation, the previous cost reasons determine that this model is very difficult to make a profit, the loss of money trading has, but where to find the king in the movie?
The relatively fixed "gas station model" of the substation will actually exacerbate this aggregation effect. Gas stations are basically refueled along the way or nearby, but there are more than 120,000 gas stations in China. A gas station can undertake at least 3 or more vehicles for refueling operations, which is almost a problem that cannot be solved by the replacement power station at present.
As a result, the efficiency of power exchange in crowded places is higher, and the batteries of the power station are replaced. What remains is only a battery pack with residual electricity, and the main driver of the car can only go to the periphery, or directly sit on the ground to charge.
There are only two ways to solve it, more substations, or build a bigger one.
Storing more battery packs creates another safety issue.
High-density and large-capacity power batteries, is it safe to disassemble and remove them every day? How to eliminate the circulation of sick batteries? Battery problems lead to failures, accidents, how to define the compensation?
Remember last year, an energy storage power station, decommissioned power battery spontaneous combustion explosion?
Therefore, the idea of changing electricity is still a good wish for the time being.
The shared battery pack is just an "intermediary" product under insufficient energy density. As a supplier, a battery factory enters the intention of power exchange, and its fundamental purpose is to seek more benefits in cooperation with car companies and game.
As a result, in the end, it was just a fight between the gods and immortals, and ordinary people such as Er could eat melons and watch the drama
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