18650 20Ah Exploration Machine Battery
The invention of high-precision portable exploration machine has become an important tool for carrying out long-term scientific research, exploration and testing in the field, and it provides high-precision petroleum exploration equipment with efficient, portable, lightweight and sufficient backup power solutions in the scientific research. 18650 lithium-ion battery pack has become the first choice for this type of high-tech test instrument backup power solution due to its own unique advantages.
Petroleum exploration equipment is a portable field exploration equipment for petroleum geology and petroleum reserve sources. It can detect related geological layers at the surface level. Through advanced nuclear magnetic resonance core analysis, it uses the hydrogen nuclei in the oil and water to have resonance in the magnetic field. The characteristics of the signal generated to detect the physical properties of the rock to find the relevant underground petroleum source and determine the content of the petroleum reserve. Traditional outdoor power supply devices all use lead-acid batteries, and their shortcomings such as low energy density, large volume, increase the burden on prospectors for outdoor working. New-type petroleum exploration equipment uses lithium-ion batteries with high energy ratio, light weight, small size, and long cycle life, high safety, good consistency and other advantages. The output over-current protection value of the battery pack is 20A, the maximum design capacity is 40Ah, and the over-temperature 70℃ automatic protection device can meet the electricity demand of the instrument for a long time and is being widely used in the field of petroleum exploration equipment.
Battery Features:
1) Lithium battery pack model design requirements: 18650-3S8P/20Ah/11.1V.
2) Circuit design requirements:
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. Combined battery overcurrent protection value (10ms): 30~35A
6. Combined battery over-temperature protection value (recoverable): 70±5℃
7. The finished battery also has short circuit and reverse charge protection
3) Battery cycle life design requirements: 500 times (national standard charge and discharge standards)
4) Design requirements for pool dimensions: 200*120*75mm
Lithium battery design for petroleum exploration equipment:
1) Protection board (PCM): Mainly a protection circuit designed for rechargeable lithium battery packs. Due to the chemical characteristics of lithium batteries, it is necessary to provide protection functions such as intelligent power calculation, overcharge, over discharge, short circuit, and overcurrent. In order to avoid the danger of burning and explosion.
2) Protection IC (Protection IC): The main protection function chip of the design scheme, which performs online monitoring of overcharge, over discharge, overcurrent, short circuit and other functions of the battery cell, so that the battery cell can work in a safe, stable and efficient range.
3) Temperature switch: Mainly designed for temperature protection function. When the temperature of the battery itself reaches the range of 70±5°C due to other abnormal problems, the temperature switch is activated for temperature protection.
4) 18650 lithium-ion battery cell/18650/2500mAh/3.7V.
5) Field effect tube (MOSFET): MOSFET, which acts as a switch in the protection circuit, always keeps the voltage at both ends of the load from increasing or decreasing, ensuring voltage stability.
6) LED voltage display meter: to indicate the voltage of the battery module, which is convenient for monitoring the battery voltage and power.
7) Waterproof mode: vacuum waterproof input and output plug, waterproof switch, battery waterproof box, make the whole battery in waterproof mode.