One of my ways is to increase the output voltage of the existing charger, and there is another coordination circuit on the bicycle. Because there is actually a requirement for voltage reduction at the end of charging, the perfect circuit should be specially designed, and the specific design details and complete drawings and test data may not be released until 5 to 10 years later.
Now more than 100 drawings have been accumulated, all of which can be used, each with its own advantages and disadvantages. Its formal design should have a profound and accurate understanding of the circuit.
My actual test reached the distance of120m, and the medium voltage transmission in safe voltage was adjusted to the end.
At present, remote charging voltage and charging current lines are also used, which is a perfect way to charge each battery separately.
There are no related products on the market.
The attached picture shows the appearance of one of the designs, which shows its complexity.
I have been charging electric bicycles downstairs in high-rise buildings for a long time and have rich experience.
In order to ensure the battery life and transmission safety, we should use ultra-low voltage drop charger. I use the ultra-low voltage drop linear stability guarantee circuit assembled by fully discrete components, imported ultra-low voltage drop linear integrated circuits and switch modulation integrated circuits.
The problem you expressed is due to the low design level of the general electric bicycle charger and the pressure of cost limitation. For high-energy batteries, continuous detection of battery temperature rise is emphasized; For lead-acid batteries, its tolerance is much stronger. If the temperature rise of lead-acid battery is too high when charging, it means that it has been overcharged, which is very serious.
It is common that the charger can't jump the lights automatically. The simplest method is to connect an ammeter in series and manually monitor it, and manually and forcibly switch to a lower floating charge voltage according to the actual situation. The obstacle is that the charger manufacturer keeps the line secret now, and it will take several days to carefully read the assembly and distribution of the line, then redraw the circuit diagram through reverse engineering, and then make modification measures.
The greater difficulty is that the current method of charging several batteries with rated voltage of 12 volts in series has serious defects. After dozens of charge and discharge cycles, the capacity and voltage of each battery are more and more different. Even if human intervention in charging, it is a drop in the bucket, useless, anxious, can't help.
The complete solution is that each battery has a charger, and each battery has an independent voltmeter and ammeter for continuous monitoring. This charger is not the current three-stage charger, nor is it the "computer intelligence" charger advertised by enterprises.
I have always wanted to fully disclose the relevant design and a large number of test data for free. You need to find Ye Qin, Hu Jun and Jiang Shuzhuo to open a free teaching network, and the publishing house they are in charge of.