Battery design of portable B-ultrasonic machine
Battery design of portable B-ultrasonic machine
Quotation: (key words: 18650 lithium battery group B ultrasonic battery) with the development of medical science and technology and the improvement of human material living standard, the portable function of medical equipment and the household application of products have become the development trend of the whole industry. The portable B-ultrasonic machine gets rid of the non mobile disadvantages of the traditional desktop computer AC power supply, and realizes the advantages of light, portable and multi-functional. The product uses high-performance lithium battery pack for power supply to meet the continuous, efficient and stable operation of the product.
1、 Requirements for battery design scheme of portable B-ultrasonic machine:
Portable B ultrasonic machine is convenient for medical staff to carry out movable indoor and outdoor work, and providing continuous, efficient and stable mobile power supply has become the biggest guarantee for the normal operation of such equipment. The scheme adopts high-performance cell, which makes the whole battery have the characteristics of high energy ratio, light weight, small volume, high cycle life, high safety and high consistency. In the power management scheme, the SBS battery management system with high intelligence is adopted to effectively manage the battery safety and power.
2、 Battery design scheme of portable B ultrasonic machine:
1) Protection board (PCM): it is mainly the protection circuit designed for the rechargeable intelligent battery pack. Due to the chemical characteristics of the lithium battery itself, it needs to provide intelligent power calculation, overcharge, overdischarge, short circuit, overcurrent and over temperature protection functions. To avoid the risk of combustion, explosion, etc.
2) AFE / IC (Protection IC): the main protection function chip of the design scheme, which can monitor the overcharge, over discharge, over-current, short circuit and other functions of the electric core on-line at any time. Make the core work in a safe, stable and efficient range.
3) 18650 Li ion cell: 18650 Li ion cell (bak).
4) MOSFET: MOSFET, which plays a switching role in the protection circuit, so that the voltage at both ends of the load will not rise or fall, ensuring the voltage stability.
5) Power management and control chip (bq2085): a fully functional power detector, which has an analog-to-digital converter (ADC) for measuring voltage and temperature and an analog-to-digital converter for measuring current and charge sensing. The power meter has a microprocessor, which is responsible for the power detection and can provide the remaining state of capacity and other information. The bq2085 chip also provides the run time to empty. The host can query these information from the electricity meter at any time and inform the user of the battery information. The use of electricity meter is very convenient, so that users can master the battery power at any time.
6) Battery pack package: rubber shell.
3、 Schematic diagram of battery design scheme for portable B-ultrasonic machine:
