Protection board Description:
10A string protection board with a balanced 3/4/5, 3/4/5 cells lithium-ion battery lithium polymer battery protection board. A new version of the third generation, better performance, standard package.
This can only be protected by a protective plate 3/4/5 string battery in an irregular situation (over-voltage and over-current short circuit temperature voltage imbalance), not charging plate, do not use ordinary power direct charge!
Features:
This circuit by detecting the battery voltage, charge and discharge current ambient temperature and other information has been provided to the lithium battery overcharge, over discharge, over current, short circuits, abnormal charging, overheat protection.
This circuit provides a battery capacity balance function, eliminating battery pack each battery capacity is uneven due to the voltage difference caused to efficient work and thus greatly extend the battery life.
The circuit supports 3-5 string lithium-ion battery (3/4/5 cells adaptive, without adding any external circuit, just change what jumper)
Use two 4 milliohms importing mos, the total circuit resistance is less than 20 milliohms! Ultra-small loss! Ultra-low fever!
4 mm ultrathin thickness!
Abnormal discharge are protected!
Parameters:
Size: 24 * 49 * 4MM
The protection plate resistance: 20 milliohms
Charge and discharge over-current protection current: 13A
Discharge overcurrent protection Hysteresis: 0.2S
Charging current protection Hysteresis: 0.02S
Charging overcurrent lift: disconnect the charger
Overcurrent releasing delay: 0.2S (off load)
Overcharge protection voltage: 4.25V each section
Overcharge protection Hysteresis: 1S
Overcharge release voltage: 4.19V each section
Over-discharge protection voltage: 2.8V each section
Over-discharge protection delay: 1S
Overdischarge release voltage: 3V each section
Short circuit protection current: 50A, short circuit protection lock, only rechargeable recovery
Short-circuit protection Response time: 0.0003S
Balancing start voltage: 4.190V
Charging over-temperature protection: 60 ℃
Discharge over-temperature protection: 80 ℃
Balancing logic: When any one section of the battery voltage is lower or higher than 4.19V, the external discharge circuit does not open; otherwise the voltage is higher than 4.19V batteries will open this section balancing discharge circuit, the battery voltage discharge to below 4.19V. During charging, if the five sections in the highest voltage section into the overcharge protection state and its balance discharge circuit is turned on, the charge control MOS transistor is turned off, the external balance of the discharge circuit will be open so that the battery voltage has returned 4.19 V, then open the charge control MOS tube to continue charging. After a sufficient time for charging and discharging cycle, all will be fully charged to the battery voltage above 4.19V, to eliminate differences in the capacity of each cell.
Connection methods:
Supplied with the board thermistor please mark NTC welded on to the words of two pads, well insulated, with thermal silicone paste to the battery temperature. If you do not use 10K resistor temperature protection can be replaced by NTC.
The default is 5 cells batteries, wiring methods see baby pictures. For different charge and discharge port (internal resistance) P +, P- take the load, P + and CH- pick charger For charging and discharging the same port, the charger and load are connected to the P + and CH- (resistance of 5 milliohms Euro)
For 4 cells battery, please marked with two joints short 4S, and the B- and B1 + shorts. the first battery connected to B- and B2 +.
For 3 cells battery, please marked with two joints short 3S, and the B- and B1 + and B2 + shorts. the first battery connected to B- and B3 +.
Note: Do not short-circuit 3S and 4S pads , otherwise self-destruct!
Welding "B- " and "B + " is recommended to use thick wire, welded at the back of the board, be careful not to short-circuit to a balanced resistance (short distance)
Balanced line can be with relatively a little thin wire.
Package Included:
1x 3/ 4/ 5 packs 18650 Li-ion lithium BMS Protection Board
