Smart Li-ion BMS 25.9V PCM 7s 25A Battery PCM Bms Pcm 7s Li Ion 8s
Lifepo4 24v 30a 40a 60a
Li-Ion PCM for 25.2v-25.9v 7s (7 cell) Battery - 25a Max Discharge
7s 30A PCM BMS for 24V 25.2V 25.9V Li-ion/Lithium/ Li-Polymer 21V 22.4V LiFePO4 Battery BMS L07S25
24v 7s 45a 18650 Li-ionLiPolymer Battery BMS PCB PCM Battery Protection
24V 7S 16A/25A/35A/45A/60A Li-ion battery Protection Board BMS PCB PCM
7S 24V 20A Lithium Li-Ion Lifepo4 18650 Battery Bms Pcb Pcm
Feature:
1. Protection Circuit Board for 37V 10S Li-ion and Li-polymer
battery pack;
2. BMS applies for 10 cells Li-ion/Li-polymer battery in series;
3. To prevent the battery packs from overcharge,overdischarge,over
current, over temperature ,short circuit ;
4. With cell balance/equilibrium function;
5. Compatible with both Li-ion and Li-Polymer cells.
6. How balancing function works? after battery pack is fully
charged. PCM will detect each cell's voltage and trim higher
voltage down until other cells reach the same voltage level.
Therefore, it helps cells have longer service life.
Any functions can be choose as follow:
1) Power off detection (It can be locked when removed the PCM from
battery pack, to avoid safety accidents caused by users
unauthorized disassembly or replacement)
2) MOS statistics of overtemperature protection times (it can lock
up after N times overtemperature protection to avoid safety
accidents caused by user overload)
3) Power on timing (it can lock up after N years running, it means
we can design a lock time depends on the batteries service life,
then the user can’t replace the batteries by themself)
4) Counting discharge times (It can design lock up after N times
charge and discharge, then if can’t be work end of batteries
service life )
5) Add buzzer (it can make a sound to remind the user to charge
when the battery is stored for a long time, the voltage is too low
due to self discharge to protect batteries)
6) Unique ID (a unique ID number can be added to each board for
product tracing)
7) UART communication (communication with PC can be realized, to
setting and viewing the data of the above items 1-6 before
delivery)
8) Bluetooth function ,then you can check the batteries status by
your phone
Specification(the criterion can be adjustable as custominzed):
| No. | PARAMETER | Criterion |
| 1 | Voltage | Charging voltage | DC:29.4V CC/CV |
| Balance voltage for single cell | 4.125±0.025V |
| 2 | Current | Balance current for single cell | 80±5mA |
| Current consumption | ≤25μA |
| Maximal continuous charging current | 12A |
| Maximal continuous Discharging current | 26A |
| 3 | Over charge Protection | Over charge detection voltage for single cell | 4.25±0.025V |
| Over charge delay time | 800mS~1200mS |
| Over charge release voltage for single cell | 4.15±0.05V |
| 4 | Over discharge protection | Over discharge detection voltage for single cell | 2.80±0.03V |
| Over discharge detection delay time | 800~1200mS |
| Over discharge release voltage for single cell | 3.0±0.025V |
| 5 | Over current protection | Charge over-current protection | 13.33A±10% |
| Charge Over-Current Delay | 400~600mS |
| Discharge over-current protection1 | 33.33A±10% |
| Detection delay time1 | 700~1300mS |
| Discharge over-current protection2 | 66.66A±20% |
| Detection delay time2 | 70~130mS |
| Release condition | Cut load,Automatic recovery |
| 6 | Short protection | Detection condition | Exterior short circuit |
| Detection delay time | 160~240uS |
| Release condition | Cut load,Automatic recovery |
| 7 | Resistance | Protection circuitry(MOSFET) | ≤1.67mΩ |
| 8 | Temperature | Operating Temperature Range | -25～+70℃ |
| Storage Temperature Range | -40～+125℃ |
| Charge Over Temperature | 48.5℃±5℃ |
| Charge Under Temperature | -5℃±5℃ |
| Discharge Over Temperature | 70℃±5℃ |
| Discharge Under Temperature | -25℃±5℃ |
| 9 | Dimension | | 56*46mm |
Picture:
