Design scheme of backup battery for stage lamp

1、 Stage scene light introduction

72 3W white LEDs are installed and equipped with multi-functional support. The LED adopts air convection heat dissipation without fan and noise. The optional lens angle is 10 °, 25 °, 40 ° or 60, and the refresh frequency is 1000Hz. There is no flicker under the high-definition camera. Multiple machines can be simply combined. It is the best choice of LED lights for TV studio, theater, emergency news interview and other places.
2、 Requirements for standby battery of stage scene lamp
The standby battery of stage scene lamp is required to have a service life of 1000 times and a continuous working time of more than 7 hours. Therefore, all the lithium battery cells are imported Sanyo 18650 lithium-ion batteries, which use three strings and four parallel combinations to meet the customer's relevant parameter requirements.
Battery pack model
CX-11.1V-10.4AH
Model of single battery
Sanyo lithium ion 18650 electric core
Battery combination mode
3 strings
Cell voltage
3.7V
Voltage after battery pack combination
11.1v (3.7V / section * 12 sections)
Battery charge and discharge voltage range after combination
9－12.6V
Cell capacity
10400mAh
Combined battery capacity
2600mAH / section * 1 Section
Battery pack size
37*37*196*mm
Maximum discharge current
＞2A
Instantaneous discharge current
＞4A
Maximum charging current
＞0.2-0.5C
Charge and discharge times
More than 1000 times
3、 Power scheme of stage scene lamp:

Lithium battery protection function of stage scene lamp

Lithium battery core: imported Sanyo 18650 lithium battery core

Battery overcharge function: add a charger between P + and P -, charge the battery, when the voltage is charged to 12.6 ± 0.05v (can be designed according to the requirements), the protection circuit will act, turn off the charging path, and realize overcharge protection

Battery over discharge protection function: connect a load between P + and P - to discharge the battery. When the battery voltage drops to 9V ± 0.1V (can be designed according to the requirements), the protection circuit will act, turn off the discharge path, and realize over discharge protection

Short circuit protection function: when p + and p-are short circuited, the protection circuit will act quickly within 5-50us, cut off the path, and realize short circuit protection

Overcurrent protection function: when the voltage of b-terminal and p-terminal reaches (0.15 ± 0.02v), the protection circuit will act quickly within 5-26ms, cut off the path, and realize overcurrent protection



Temperature performance

Discharge temperature range: - 10 ℃ - 60 ℃

Charging temperature range: 0 ℃ - 40 ℃

Storage temperature: 3 months: - 20 ℃ - 45 ℃

1 month: - 20 ℃ - 60 ℃