Keywords: Security monitoring lithium batteries
In recent years, with social and family public safety awareness strengthen, more and more Intrusion alarm system, video security monitoring system, import and export supervision system, explosion-proof safety inspection system equipments are applied to our lives. Moreover, most of them are installed outside, which needs high quality for matching battery, like high and low temperature-resistant, safety explosion-proof, power display and other properties.
(1) Monitoring Equipment Smart Battery Request
According to customer’s request and specification, large power design matched robot battery packs, which integrate smart voltmeter with communication protocol, lithium battery and safety protection in your solution and share the information with hosts, then finally achieve the reasonable, high efficiency and safe battery management solution. In the overall solution, large takes smart battery pack and hosts integration as the direction and ensure batteries, battery packs and whole system safety and meet relevant design regulation and certification standard . Meanwhile, in order to ensure lithium ion battery safety and reliability, the battery packs need to use multilayer protection, which could prevent battery broken because of overcharging, over discharging or short circuit.
(2) Monitoring Equipment Smart Battery Solution
- Battery cell: 954674P Li-ion polymer cell
- Battery Pack: PL954674 3.7V 4000mAh
- PCM: PCM is the protection circuit, which mainly used for rechargeable battery packs (generally refer to lithium battery) .In order to avoid burning and explosion, PCM need to provide over charging , over discharging ,short circuit , over current and over temperature functions because of the battery chemical features.
- Protection IC: The IC is the key protection chip, which could constantly monitor over charging, over discharging, over current, short current of the battery .In this way, the battery pack could work well under safe and high efficiency range.
- MOSEFT: The MOSFET plays switch role in protection circuit, which could ensure the both ends load not to go up and go down forever and keep voltage stabilization.
- Power management control chip （BQ40Z50-R1）: The power detector with complete function has the voltage and temperature ADC and current and charging ADC .It has the microprocessor, which could provide remaining power information. BQ40Z50-R1 could provide rest run time. The host could check this information from power detector at any time and provide it to the user. The power detector is very convenient, which could let users to master battery energy.
- Battery pack sealing: PVC Tube
- Schematic Diagram