Mostly we will use resistor bleeding bms for our battery pack. Anyway, there is a different type of bms.
Capacitor Type BMS.
Advanced capacitor balancing technique which is working at charging,discharging and static state all the time.It balances cells by transfering energy from higher volt cell to lower volt cell. Save energy and reduce heat emission in balance process(compare with resistor bleeding bms)
We can see there is no resistor but only capacitor inside the bms. Also there is samll led to indictor the working of the bms. One led per capacotor. When the cell are balancing, the small led will be on.
Its balance system will work all the time by moving energy between unbalancing cells. So no energy lost as resistor bleeding.
Its super good for D.I.Y and people who have a higher requirement for bms performance.
Last even we have a very good bms, we should check the consistence of the cells which can be easily by cell voltage.
Have a nice day.
Michael Cheung
EV ASSEMBLE
www.evassemble.com
Very Interesting ! Is that a DIY project of yours ? if it is , Congrats Michael ! Hope you get to manufacture more of that item and put it out in the Market . (after lots of tests of course). I have a feeling you're right that it's better than a BMS with resistors (i reckon you have a voltage stabilizer/regulator built in right ?). Paul
if it ain't Broke, don't Fix it..
Hi Paul,
They are matured bms solution since they have been tested and we also sold a lot of them. The major feature is the balancing system. We can said it is a new development bases on the resistor bleeding bms but a large improvement.
There are IC chip to check the the voltage so the bms know when it should "move" energy.
www.evassemble.com all for EVs
If you are finding ev parts, this will be a website deserves your visit.
Here is a 72V 150Amp constant capacitor BMS. There are two layers of capacitors which will make sure the balance capability for the 72V battery. That customer is using it to run a Motor bike. Of course the bms have one year warranty under our specification as all items from us.
![HF4U8EC${3]VCAL~M3%_F4I.gif](/sites/default/files/u5392/HF4U8EC%24%7B3%5DVCAL%7EM3%25_F4I.gif)
If anyone have ever use a bms will know that when a resistor bms bleeding. The resistor will come to be very hot. But this will not happen in the capacitor bms. It dont emit energy from cells. Also when this bms discharge and charge, it only become a bit warm no too hot feeling. Very stable.
Only thing to notice is that keep good match between Motor, Controller, Capacitor BMS and Cells.
No matter resistor bms or capacitor bms. We shoud choose a right bms for the cells and controller.
Cells are under control of bms and bms is under control of controller. The "boss" should always know what their subordinate can do.
www.evassemble.com all for EVs
If you are finding ev parts, this will be a website deserves your visit.