Shenzhen Juyi Science And Trade Co., Ltd.
Shenzhen Juyi Science And Trade Co., Ltd.
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| Electric Parameter | | | | | | | ||||||
| PCM Specifications For 7.4V(2S)Li-ion Battery Packs | | | | | | | ||||||
| Model:JW-B2S8A-014 | | | | | | | ||||||
| NO. | Project | | Min. | Typ. | Max. | Unit | ||||||
| 1 | voltage | Charging voltage | | 7.2 | | V | ||||||
| | | Balance voltage for single cell | 3.55 | 3.6 | /3.65 | V | ||||||
| 2 | Current | Balance current for single cell | 31 | 36 | 41 | mA | ||||||
| | | Current consumption | | | 20 | uA | ||||||
| | | Maximal continuous charging current | | | 20 | A | ||||||
| | | Maximal continuous discharging current | | | 20 | A | ||||||
| 3 | Over charge protection | Overcharge detection voltage for single cell | 3.875 | 3.9 | 3.925 | A | ||||||
| | | Overcharge detection delay time | 0.5 | | 1.5 | S | ||||||
| | | Overcharge release voltage for single cell | 3.40 | 3.45 | 3.50 | V | ||||||
| 4 | Over discharge protection | Overdischarge detection voltage for single cell | 1.95 | 2.00 | 2.05 | V | ||||||
| | | Overdischarge detection delay time | 50 | | 150 | mS | ||||||
| | | Overdischarge release voltage for single cell | 2.4 | 2.5 | 2.6 | V | ||||||
| 5 | Overcurrent protection | Over current detection voltage | 175 | 200 | 215 | mV | ||||||
| | | Over current detection current | 65 | 75 | 85 | A | ||||||
| | | Detection delay time | 5 | | 15 | mS | ||||||
| | | Release condition | Cut load | | | | ||||||
| 6 | Short protection | Detection condition | Exterior short circuit | | | | ||||||
| | | Detection delay time | 200 | | 500 | μS | ||||||
| | | Release condition | Cut load | | | | ||||||
| 7 | Resistance | Protection circuitry (MOSFET) | | | 50 | mΩ | ||||||
| 8 | Temperature | Operating Temperature Range | -40 | | 85 | ℃ | ||||||
| | | Storage Temperature Range | -40 | | 125 | ℃ | ||||||
A protection board and a battery management system (BMS) are both used to protect lithium-ion batteries, but they serve different functions.
A protection board is a small electronic circuit that is typically placed between the battery and the device it powers. It is designed to prevent overcharging, over-discharging, and short circuits.
Protection boards are relatively simple and inexpensive, and they are often used in applications where only basic battery protection is needed.
