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The solution of defibrillator battery 2016-01-20



Shenzhen Lee&Jack Power developed defibrillator battery, that fully compatible with international first-class brands, including Bruker, HP, Hewlett Packard, innomed , Medtronic, NIHON KOHDEN, PRIMEDIC, MINDRAY, and so on.The battery is superior, stable, nine heavy protection, long service life and long service life.


Ⅰ.1)solution requirements for lithium battery models: 18650-3S8P/20Ah/11.1V

2)solution requirements for circuit parts:

1、Single cell overcharge protection voltage: 4.35±0.25V

2、Single cell overcharge recovery voltage: 4.15±0.50V

3、Single cell over discharge protection voltage: 2.40±0.08V

4、Single cell over discharge recovery voltage: 3.00±0.10V

5、Battery pack overcurrent protection value(10ms):30~35A

6、Battery pack over temperature protection value (recoverable): 70±5℃

7、The finished battery also has short circuit and reverse charge protection.

3)Solution requirements for cycle life of batteries:300~500 times(National standard for charge and discharge)

4)Battery size design requirements: refer to the battery shell

Ⅱ.Battery design

1)The protection board (PCM): Design protection circuit mainly for intelligent rechargeable battery. Because of its chemical properties, the lithium battery needs to provide intelligent power calculation, overcharge, over discharge, short circuit, over-current and over temperature protection functions to avoid fire, explosion and other hazards.

2)Protection IC: Chip,the main protection function of the design scheme, monitors the battery cells with overcharge, over discharge, over-current, short circuit and so on to make cells work in a safe, stable and efficient range.

3)Temperature switch: mainly aims at the temperature protection function design. When the temperature of the battery itself reaches 70 ± 5 ℃ due to other abnormal problems, the switch is switched off automatically to protect the temperature.

4)18650 lithium ion battery cells: /18650/2500mAh/3.7V Li-ion cell(SANYO)

5)MOSFET: In the protection circuit, the MOSFET acts as a switch, so that the voltage at both ends of the load will not rise or decrease, and the voltage stability will be guaranteed.

Ⅲ.Drawings and real pictures of battery products

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