Product Description
SinoWealth Integrated Solution
Disconnection Protection
3~10S Continuous 100-200A
High Power
TVS High Current Surge Protection
Effectively protects precision components in
electronic circuits, balancing current up to 250mA
Aluminum Substrate Technology
Enhanced Service Life
Every unit aluminum substrate effectively manages heat dissipation,
reduces module operating temperature,
improves reliability, high current resistance
Temperature Protection
Upgraded Internal and External Temperature Control
External temperature control 75°c,
internal 95°c high-temperature shutdown,
safety at all times
Reserved low-voltage switch function
Wire harness snap design –
prevents connector loosening
Pre-drilled positioning holes for easy fixing
Supports Custom 4 Groups in Series
With Heating Function, Carefully Crafting Each Protection Board,
Product parameters
Li-ion Battery Protection Board | |
Model | Model |
JBD-ZP04S014 | JBD-ZP10S036 |
Dimensions | Dimensions |
144*85*10MM | 140*65*10MM |
Applicable Products | Cell Voltage |
Ternary or LiFePO₄ | 3.2/3.7V |
Features | Package List |
Good heat dissipation, high cost-performance ratio | Protection board + wiring harness + installation diagram |
Discharge Current | 50A ~ 120A |
Discharge Overcurrent Protection Value | 3–5 times the continuous current |
Main Circuit On-Resistance | <10 mR |
Charging Current [Common Port] | 50A / 120A |
Charging Current [Separate Port] | / |
Charging Voltage | LiFePO₄ pack series × 3.75V |
Overcharge Protection | Balance Voltage |
Detection voltage: LiFePO₄ 3.750±0.05V | Detection voltage: LiFePO₄ ≥3.5V |
Detection delay: 1000mS | Release voltage: LiFePO₄ <3.5V |
Release voltage: LiFePO₄ 3.550±0.05V | Balance current: 225mA |
Over-discharge Protection | Discharge Overcurrent Protection |
Detection voltage: LiFePO₄ 2.2±0.1V | Detection voltage: LiFePO₄ 100mV |
Detection delay: 1000mS | Detection delay: 1000mS |
Release voltage: LiFePO₄ 2.7±0.1V | Release condition: remove load / charge activation |
Short Circuit Protection | Temperature Protection |
Trigger condition: external load short circuit | Discharge over-temp protection: 90℃ |
Detection delay: 500μS | Discharge high-temp release temperature: 65℃ |
Release condition: remove load / charge activation | Release condition: remove load / charge activation |
Self-consumption | Operating Temperature |
Operating consumption: <150μA | Temperature range: -20℃ / +70℃ |
Sleep / over-discharge consumption: <30μA |
Wiring
Common Port Protection Board Wiring Method
Using a Single Series Connection as an Example
1. Before installing the protection board, batteries must be well-matched (voltage difference between each cell not exceeding 0.05V, internal resistance difference not exceeding 5mΩ, capacity difference less than 30mAh). If the voltage is too high, the protection board may activate protection and fail to work properly. If batteries are already fully charged, discharge to the required voltage before connecting the protection board. Batteries should be connected in parallel first, then in series.
2. Wiring sequence: First connect the B- wire to the battery total negative (B- wire must be soldered short), then connect the harness; before connecting the harness, make sure to unplug it from the board. Harness: Start wiring from BC0, BC0 connects to battery total negative, second wire BC1 connects to first series battery positive, third wire BC2 connects to second series battery positive, fourth wire BC3 connects to third series battery positive, and so on. After connecting the harness, measure the voltage between each adjacent pair of wires from the start, polymer battery voltage should be less than 4V, LiFePO4 battery voltage less than 3.5V. After verification, insert the harness, then connect charger negative and load negative to C-. B- and C- wires must be soldered with thick wire. Harness connection is independent of color; only the order must be correct.
3. Finally, measure whether the total battery voltage equals the protection board output voltage; if equal, the protection board is working properly.
4. Protection boards that have been used or soldered are not eligible for return or exchange. The protection board has a one-year warranty. Due to low profit margins, repairs are free during the warranty period, but shipping costs both ways are borne by the customer.
Note: Be sure to solder the thick B- wire first before connecting other wires. If the B- wire is soldered too thin, too long, or not soldered, it may burn the board! B- must be soldered with a thick, short wire.
Quality Control
Strict Quality Control in Production
Traceability Support
Product Quality Assurance
1. BMS undergoes multiple rigorous tests before shipment; internal software and hardware exceed industry standards.
2. For protection board production test data, contact customer service to obtain it, bringing strict quality to your eyes (requires scanning traceability code).
High-Precision SMT UV Glue Coating Final Assembly
Full-Process Traceability Full Functional Testing FQA Quality Assurance
Selection Guide
Item | Description | Example | Consequence of Wrong Selection |
Battery Type (Ternary/LiFePO₄) | The protection board type must match the battery type. | Ternary: nominal voltage 3.7V (discharge cut-off 2.8V, charge cut-off 4.25V)LiFePO₄: nominal voltage 3.2V (discharge cut-off 2.2V, charge cut-off 3.75V) | Board or battery may burn; incomplete charging/discharging; damage to the protection board. |
Number of Cells in Series | The number of series connections on the protection board must match the battery pack’s series count (except for auto-detect boards or models that support high-to-low modification). | A 20 series protection board corresponds to a 20-series battery pack. For auto-detect boards, contact customer service for the correct wiring diagram. | The board will not function properly, and damage may occur. |
Protection Board Current | For high-power applications (e.g., three-wheelers, four-wheelers), consider the controller’s current limit. A general formula: power ÷ nominal voltage × 2 (or a safety factor of 1.5–3 times the actual maximum output current). | Example: For a 13-series ternary battery pack (36V nominal) with a 350W motor:350W ÷ 36V × 2 ≈ 19.4A. It is recommended to choose a 20A or 25A board (5A margin is optimal). | Undersized current rating may burn the board; larger current rating is safer. |
If the controller current limit is known, simply select a protection board rated higher than that limit. |
