would like to ask, is the electric car key different for every car? I don’t know if you mean electric cars or electric bicycles. If it is an electric car, the keys of each car are different, and the mutual opening rate is extremely low; if it is an electric bicycle, the keys have a certain mutual opening rate, that is, the keys of some cars are the same .
here first introduce a concept of mutual opening rate. Regardless of the lock, the basic principle is to unlock with the locking reed inside the unlocking device on the top of the tooth on the key. The combination of these locking reeds has a certain threshold. For example, there are 10,000 combinations at most. In theory, as long as there are more than 10,000 locks, there must be two duplicate keys. The probability that the different locks can be opened to each other is called the mutual opening rate. The more complex the lock, the lower the mutual opening rate. In the national standard, the mutual opening rate of Class A locks should be ≤0.03%, that is, at most three of 10,000 locks are the same; the mutual opening rate of Class B locks is ≤0.01%, that is, the maximum of 10,000 locks One of them is the same; the mutual opening rate of C-class locks is lower, about ≤0.0004%, that is, at most four of a million locks are the same.
Next we will use the mutual opening rate to talk about the keys of electric vehicles.
For electric vehicles, its car keys are more complicated, rarely repeated, and the mutual opening rate is low. Due to the requirements of anti-theft for electric vehicles, the manufacture of door locks and electric locks is more complicated, similar to the Class B locks or Class C locks used in our homes. The structure of this kind of lock is complicated, there are many locking reeds inside, the tooth shape of the key is complicated, the repetition rate is very low, and the more advanced car lock is more complicated, so its mutual opening rate is very low. In addition, the number of electric vehicles is not large. There are rarely more than one million electric vehicles produced by the same manufacturer, generally between tens of thousands to hundreds of thousands. In theory, there should be duplicates, but Electric cars are sold all over the country, and the probability of duplicate keys in the same area is almost zero.
Furthermore, electric vehicles not only have mechanical locks to prevent theft, but also electronic anti-theft systems. An electronic anti-theft system is generally integrated on the car key. There will be a chip or integrated circuit inside it, which responds to the anti-theft system on the electric vehicle, which is what we commonly call the "pair code". Only when the password is correct, the electric car is allowed to start. This anti-theft code is the same as a car and will never be repeated, and now many cars use dynamic codes, and the anti-theft ability is stronger. Therefore, for electric vehicles, mechanical keys plus electronic anti-theft, it can be said that the keys of each vehicle are different.
For electric bicycles, the key opening rate is much higher. Everyone looks at the keys of electric bicycles, the teeth are relatively simple, some even have only two or three teeth. There can be hundreds of such tooth combinations at most. That is to say, hundreds of electric bicycles of the same model must have the same key that can be opened to each other. In this regard, we also have practical experience: once the key of my electric bicycle was lost, a colleague from the unit used his own key to open the lock, tried nearly ten keys, and finally one key opened my lock. Therefore, the key repetition rate of electric bicycles is relatively high. In addition to the huge amount of electric bicycles, it is completely possible to open different cars with the same key.
is not just electric cars and electric bicycles. The keys of other models also have a certain mutual opening rate. There are nearly 100 cars in our fleet and a large bunch of car keys. It often happens that the keys are mutually open. Even the keys of some construction machinery are extremely simple, the keys are almost universal, and the phenomenon that one key can open all vehicles has also happened. For our family, we often hear that someone walks on the wrong floor and uses his own key to open the door of someone else's house. This situation is more common in some newly built communities. Therefore, after we move into a new home, we must change a Class B or Class C lock to prevent the keys from being unlocked.
