BMS with HDQ, I2C Communication for 37V (10S) Battery Pack at 20A rate (#6763)
| Protection Circuit Module Specifications For 37V Li-ion/Li-Po Battery Pack | ||||
| MM3474+BQ34Z100 | ||||
| No. | Test item (Test at normal temperature 25±2 and relative humidity≤90%) | Criterion | ||
| 1 | Communication Interface | HDQ or I2C | ||
| 2 | Capacity | Designing battery capacity(PCM) | Current Setting: 20Ah | |
| Max capacity(Battery pack) | 320000mAh | |||
| Min capacity(Battery pack) | 800mAh | |||
| External capacity Indication | LCD,LED | |||
| Gas gauge algorithm | Impedance Track | |||
| 3 | Voltage | Charging voltage | DC: 42V CC/CV(4.2V/1cell |
|
| Cell-balance detection voltage(Charge balance) | 4.2V±0.03V | |||
| Cell-balance release voltage | 4.2V±0.025V | |||
| Cell-balance detection delay time | 0.961.4s | |||
| 4 | Current | Balance current for single cell | 68mA±5mA | |
| Normal operating-mode current(Gas Gauge IC) | 145 uA (Average) | |||
| SLEEP operating-mode current(Gas Gauge IC) | 84 uA (Average) | |||
| FULL SLEEP operating-mode current (Gas Gauge IC) |
30 uA (Average) | |||
| Maximal continuous charging current | 5A | |||
| Maximal continuous discharging current | 20A | |||
| 5 | Over charge Protection | Over charge detection voltage | 4.25±0.025V | |
| Over charge release voltage | 4.05±0.05V | |||
| Over charge detection delay time | 0.52S(can adjust) | |||
| 6 | Over discharge protection | Over discharge detection voltage | 2.5±0.07V | |
| Over discharge release voltage | 3.0±0.1V | |||
| Over discharge detection delay time | 0.52S(can adjust) | |||
| 7 | Over current protection | Over current detection voltage | 0.2±0.015V | |
| Over current detection current | 65±5A(can adjust) | |||
| Detection delay time | 0.52S(can adjust) | |||
| Release condition | Cut load, auto recover | |||
| 8 | Short protection | Detection condition | Exterior short circuit | |
| Detection delay time | 200-800us | |||
| Release condition | Cut load, auto recover | |||
| 9 | Resistance | Protection circuitry(MOSFET) | ≤50mΩ | |
| 10 | Temperature | Operating Temperature Range | -40+85 | |
| Storage Temperature Range | -40+125 | |||
| 11 | Dimension | LxWxT | 63x36x18mm | |
| 12 | Notes | B+Battery+ B-Battery- SMBDSMBus data line SMBCSMBus clock line P+Discharge+ P-Discharge- CH+Charge+ CH-Charge- |
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Warning
- If you want to use this protection circuit board for a battery that is less than the rated drain, you must add additional protection device to protect the battery itself. Such as: proper rated polyswitch.
- You must be professional in Lithium battery pack to buy the protection circuit board. Misusing may cause battery damage or explode. We are not responsible for any damage caused by user.