Key technology of battery management system for 14.8V Military Pack with Smbus
Introduction
Lithium Ion (Li-ion) batteries have quickly become the preferred battery technology for most applications including Cree LED torches and portable electronics. Various forms of Li-ion exist with cells and battery packs designed for a range of applications from high power to high energy density all in a very cost effective package. Its advantages in energy density to weight and volume are well known. However, the additional benefits of Li-ion such as long cycle life, shorter charge times, the ability to fuel gauge and predict end of life accurately, and significant improvements in the long term stability at elevated temperatures have increased Lithium Ion’s adoption into even more applications particularly those previously serviced by older chemistries such as Nickel Metal Hydride or Nickel Cadmium.
NO. | Items | Specifications | ||
1 | Charge voltage | 16.8V | ||
2 | Nominal voltage | 14.8V | ||
3 | Initial impedance | 220mΩ | ||
4 | Nominal capacity | 10Ah | ||
5 | Minimum capacity | 9.6Ah | ||
6 | Communication methods | SMBUS data communication | ||
7 | Charge current | Standard Charging::0.2C5A(2A) Rapid charge:1.0C5A C(10A) Max | ||
8 | Standard Charging method | 2A(0.2C5A) CC(constant current)charge to 16.8V,then CV(constant voltage 16.8V)charge till charge current decline to ≤100mA(≈0.01C5A) | ||
9 | Charging time | Standard Charging:6.5hours(Ref.) Rapid charge: 2.5 hours(Ref.) | ||
10 | Max.discharge current | 10A(1.0C5A) | ||
11 | Discharge cut-off voltage | 10.0V | ||
12 | Shelf life | 2 years | ||
13 | Cycle life (0.2C5A/0.2C5A) | 300 times,≧80%DOD | ||
14 | Operating temperature | Charging: 0℃~45℃ Discharging:-20℃~+60℃ | ||
15 | Storage temperature | Less than 1 month | -10℃~+45℃ | Percentage of recoverable capacity :85% |
Less than 6 month | -20℃~+35℃ | |||
16 | Pack Weight | Approx:820g | ||
17 | Pack Dimension | Length: Max76.00 mm Width: Max76.00mm Thickness: Max 78.00 mm |