Apple's "speedgate" must be no stranger to everyone.
16, 17 years, Apple through the system update quietly Mimi reduced the speed of the old iPhone.
You ate instant noodles for half a year to save money to buy an iPhone 7, the peak of A10 processor performance, the result of a wave of Apple system updates a year or two later, iPhone 7 only iPhone 5s A7 chip "pleasure".
Who's to blame for this.
Cook's explanation: If the phone's battery capacity is insufficient or the function is impaired, updating the iOS system may affect the phone's performance.
To put it simply, I use system updates to extend the life of my phone's battery, not all for your own good.
This statement is infuriating. It's like someone robbing a bank and saying that robbing money is to make a good life for their parents.
Coincidentally, recently this "speed-down door" has frequently happened to another "smart device" that is closely related to us.
That is new energy vehicles.
For example, the recent new force to build a car Xiaopeng, deep in the "lock electricity" vortex can not extricate themselves, simply put, is to reduce the charging performance, thereby pulling down the endurance and performance.
In March, a large number of Xiaopeng P7 owners filed a class action lawsuit over black cat complaints.
This group of Chengdu car owners claim that the battery capacity of the 2020 Xiaopeng P7 in their hands cannot reach the battery capacity of 80.3KWh introduced when buying the car, and can only be loaded with about 70KWh of electricity.
It's like if you buy a phone with a battery capacity of 5,000 mAh, and when you go home, you find that when you charge only 4,000 mAh, you show 100%, and the remaining 1,000 mAh is gone??!!
In addition to Xiaopeng, the previous GAC Toyota iA5 also had a situation where the owner complained about locking the electricity.
Their operation is also more ruthless than Xiaopeng's, and the owner finds that not only has the mileage decreased, the charging speed has become slower, and the acceleration performance has also been weakened.
The same charging station, the maximum charging current before the "locked power" is about 240A, and after the "locked power", it can only be maintained at around 120A.
According to Xiaopeng and Guangdong car owners, they all experienced an inexplicable "system upgrade" before they found that they were locked in electricity.
But this locked electricity that the owner of the Wei carriage reacted to was even more "evil" than the above two.
The manufacturer took the initiative to call the owner to invite the owner to provide free door-to-door maintenance, originally the owner thought that it was WM to give back to the old customers, full of expectations to retrieve their new maintenance of the car.
It turned out that the endurance was almost halved, and the car that had previously been calibrated for a range of 400 kilometers could only run 180-200 kilometers after maintenance. The car is also driven in the south, and there is no such thing as cold endurance attenuation.
Therefore, 173 Wei carriage owners jointly sued Wei Ma and wanted to ask for an explanation.
But so far, none of the above three companies have admitted to doing "locking electricity". So in the absence of more real hammers, this matter is really difficult to say.
But it does not prevent us from talking to everyone about locking the electricity, because the following car companies directly admit that they are locked.
It is Tesla, and people not only generously admit it, but also make a certain amount of compensation for each suing car owner.
In 2019, 30 car owners sued Tesla, claiming that after a system update in 2019, the battery life of their cars dropped by nearly 11%, and the charging speed was slow.
Tesla and Apple responded in the same way, in order to protect the battery and extend the life of the battery.
In other words, these companies are saying one sentence for our own good, is this really the case? I don't think so.
Let's first talk about why the car we put in my basement can be "shackled" remotely by manufacturers.
Locking the power is a means for manufacturers to remotely reduce the battery energy output threshold through the BMS battery management system.
To put it bluntly, how much electricity can be stored in the battery itself and how much electricity can be discharged is innate, and it is determined from the factory.
However, when these batteries are installed in the car, they have to go through a middleman, BMS, BMS to manage the estimation of the battery SOC (state of charge) and DOD (depth of discharge).
It doesn't matter if you don't know what SOC and DOD are, let me give you an inappropriate example.
The amount of battery that can eat is called SOC. The battery said that I ate a "West Lake vinegar fish" fish is full, but in order to make the battery full, the manufacturers used BMS to stuff it with a "roast whole lamb".
But this roast whole lamb can not be eaten at once, every meal of overeating, the battery body can not withstand, over time will age or even explode.
DOD refers to how much electricity the battery can discharge, the battery wants to release "one thousand volts", but manufacturers in order to highlight the acceleration ability of the car, let the BMS force the battery to put "100,000 volts".
Just like eating roasted whole lamb, we can't "100,000 volts" every time, ah, the body can not be stopped.
How much to eat and how much to put all listen to BMS, and BMS is the most listening to the manufacturer.
When my manufacturer sells the car, let the battery "eat more and put more", such as declaring 80 kWh of electricity, 600 km of endurance, and full range. Zero hundred accelerates for two seconds, and the performance is full. The roasted whole lamb was stuffed and the 100,000 volts were exhausted.
As soon as everyone tested the drive, they found that this was indeed the case, and they happily bought it and went home.
After two years, the battery is old, if you still overeat 100,000 volts like when you were young, it will aggravate the aging of the battery, causing accidents such as spontaneous combustion. Spontaneous combustion is the "plague god" of every new energy vehicle company.
Therefore, manufacturers adjust the control strategy of BMS through remote OTA, so that the battery can eat more and eat less, and live a healthy life, so that the battery can live longer.
So look at this wave, if it is really as I analyzed above, then manufacturers can have to reflect on it. It's a bit silly to make consumers pay for your overmarketing.
We also asked the relevant industry personnel, locking the electricity is very easy to be seen by everyone, the tram is almost a day to charge, the group is easy to find that this charge has cat greasy.
Therefore, if car companies are really afraid of the old battery ignition spontaneous combustion, then from the perspective of research and development from the technical point of view to update the progress, this small door trail is still quite humiliating to be found.
Everyone who bought a new energy vehicle should also pay attention, especially the owners of a few years ago.
Everyone update also pay attention to the following, before each OTA system update, look in detail at the update content, whether there is a mention of the battery management strategy update, in the end what is updated.
However, the bad reviewer feels that if the "power lock" thing really exists, it is necessary to strengthen supervision in relevant policies, and there is no hard pressure, there will always be car companies that want to exploit loopholes. For example, we can increase the writing monitoring of the vehicle controller and the battery management system BMS, and record the small actions of the manufacturers, and change them at a glance.
At the end of the article, say more, build a car well, don't make a crooked mind.