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Product Details:
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| Keywords: | Battery BMS Board | Base Material: | FR-4 |
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| Copper Thickness: | 1/2OZ 1OZ 2OZ 3OZ | Board Thickness: | 2mm |
| Min. Hole Size: | 0.1mm | Min. Line Width: | 0.065mm |
| Min. Line Spacing: | 0.065mm | Surface Finishing: | HASL |
| Product Name: | Battery Management Systems | Application: | Battery Packs |
| Usage: | Lithium Battery Packs | Number Of Layers: | 1-2-4-6 Layers |
| Communication: | No | Size: | 125*62*17MM |
| Weight: | 0.185kg | Selling Units: | Single Item |
| Single Package Size : | 13X8X9 Cm | Single Gross Weight: | 0.300 Kg |
| Package Type: | Bubble Pack And Carton | Brand: | Passional |
| Highlight: | 21S 72V 70A Battery BMS Board,lithium BMS board 21S 72V,Battery BMS Board With Balance |
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Lithium 21S 72V 70A Battery BMS Board Common Port With Balance
Selection of BMS board:
1. Determine your battery type (ternary/NCM, lithium iron/LFP, lithium titanate/LTO) and determine the number of strings and parallel to the battery pack. Choose according to the number of series.
2. Determine whether the battery pack is charged and discharged in the same port or in different ports. The same port is the same wire for charging and discharging, but separate ports one for Independent circuit of charge and discharge thought.
3. Determine the current value required by the protection board: I=P/U. That is current = power/voltage. Remember, this is only a theoretical value. In fact. We use this theoretical value as a reference. Considering the load, uphill and just starting environment, there are generally more choices for two-wheeled electric vehicles more than twice the theoretical value. Three-wheeled electric vehicles choose more than 3 times this theoretical value. four wheels Low-speed vehicles generally have about 3.5 times. For inverters and energy storage products, 1.2 times is enough. Or refer to the current limit of the electric vehicle controller. ensure. The current value of the shield must be larger than the control current limit value.
Battery BMS Board Parameter:
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Over Charge Protection
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Balance voltage
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Overcharge detection voltage
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4.25±0.05V | Balance Detection voltage | 4.18V |
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Overcharge detection delay time
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1s | Balance release detection voltage | 4.18V |
| Overcharge release voltage | 4.154±0.05V | Balance current | 30±5mA |
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Over-Discharge Protection
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Overcurrent Protection | ||
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Over-discharge detection voltage
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2.7±0.01V
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Overcurrent protection current | - |
| Over-discharge detection delay time |
IMS
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Overcurrent detection delay time | 1s |
| Over-discharge release voltage |
3.0±0.1V
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Release condition
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Cut short load |
| Short cycle protection | Temp. Protection | ||
| Detection condition | Out load short cycles | Charge protection Temp. | -5-50°C |
| Detection delay time | 300±30 | Discharge protection Temp. | -20-70°C |
| Release condition | Cut load | NTC thermal sensor | |
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Self-consumption
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Working Temp.
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| Current consumption in normal operation | <100uA | Temperature. range | -40/80℃ |
| Sleep current(over-discharge) | ≤20uA | ||
| Specification | MOS Withstand Voltage | Model | Size/mm | Weight/g |
| NCM 21S72V30A Common port with balance | 100V | 25A | 125*62*12 | 1800g |
| NCM 21S72V35A Common port with balance | 100V | 25A | 125*62*12 | 185g |
| NCM 21S72V45A Common port with balance | 100V | 25A | 125*62*17 |
190g
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| NCM 21S72V50A Common port with balance |
100V
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25A | 125*62*17 | 195g |
| NCM 21S72V60A Common port with balance | 100V | 25A | 125*62*17 | 200g |
| NCM 21S72V70A Common port with balance | 100V | 25A | 125*62*17 | 210g |
| NCM 21S72V100A Common port with balance | 100V | 25B | 176*68*17 | 380g |
| NCM 21S72V120A Common port with balance | 100V | 25B | 176*68*17 |
390g
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| NCM 21S72V140A Common port with balance | 100V | 25B | 176*68*17 | 410g |
| NCM 21S72V200A Common port with balance | 100V | 25B | 176*68*17 | 430g |
Battery BMS Board Factory Introduction:
Shenzhen Paisheng Import & Export Co., Ltd. specializes in the production of various 3.7V and 3.2V lithium-ion batteries, chargers, battery BMS and battery packs, etc. The products are widely used in digital products, laptop computers, electrical and electronic products, lighting equipment, toys, household appliances and emergency equipment. We have more than 10 years of battery manufacturing experience, we can assemble batteries and batteries according to your design and requirements.
Contact Person: Mrs. Nancy Ouyang
Tel: +86-15889650159
