Intellectual battery charger

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Intellectual battery charger
2004 . 3
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Rechargeable battery

• alkaline battery
• NiCd battery
• NiMH battery
• Li-ion battery
• acid battery
• Pb acid battery,etc

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Some important items

• AH(mAH)
• C-Rate
• Capacity
• Nominal voltage
• Fast/Rapid-Charge
• Over-charge/discharge

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Whats the differences among these alkaline
batteries?

• NiCd battery
• Memory effect
• Low voltage (1.21.6V)
• NiMH battery
• less memory effect
• Larger capacity energy density
• Longer cycle life
• Lower voltage (1.21.6V)

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• Li-ion battery
• No memory effect
• Higher voltage (about 4.2V)
• Higher capacity lighter weight
• Long life
• Wide temperature range
• No pollution

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Common charge/discharge curve line
V
V
D
E
C
A
B
B
A
t
t
Charge
Discharge
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Whats the shortcoming of common charger?

• Can not confirm the kind of the battery
• Can not change the methods of charge in time and
  suitably.
• Overcharge, long time and harm the battery

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An intellectual charger with ST7LITEX MCU
MCU ST7LITE
Vipper
Charge
Discharge
Current detect
Voltage detect
Temperature detect
Keyboard
Display / Alarm
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Features of an intellectual charger with ST7LITEX
MCU

• The ability of acknowledging the kind of battery
  (SMbus)
• Whats the SMbus? System manage bus, similar
  with I2C.
• Smart-Battery needs
• The ability of selecting the suitable charge
  methods.
• Fit the charge curve line well.

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• Quick (rapid/fast) ,efficient charge
• Const current method
• Const voltage method
• Pulse, trickle, float method, etc
• Safe, serviceable.
• Temperature detection. Tmax ?T ?T/ ?t Tmin
• Voltage detection. Vmax -?V 0?V
• Current detection. kC
• Time detection. tmax

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The guarantee of the target

• A powerful supply
• ST Vipper series
• power, MOSFET, feedback
• A quick and intellectual processor
• ST7lite0/1/2x MCU
• Advanced technology and competitive price
• Inspect the temperature,voltage, current on-line
• Select the best methods of charging automatically

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• Professional hardware software design and
  testing
• Communicate with customers closely

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Schedule

• MAR,2004 SCH/PCB design
• APR,2004 Basic software coding
• APR,2004 Hardware software debug
• MAY,2004 Testing of full set

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Electronic Fan

• 2004.3

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Feature

• Speed select
• Low, middle, high
• 3 I/O ports control 3 SCRs toselect the speed
• Mode select
• Normal / Natural mode

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• Natural mode
• simulate the true wind,changing the speed
• Swing
• Timer
• Power on timer / Power off timer
• 1, 2, 4, 8 hours can be set

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• Remote controller enable
• 46.8kHz modulate-demodulate IR
• Memorize the state
• Natural, speed, swing

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Diagram of E-fan
L/M/H speed
Impeller motor
MCU ST62
Key
Swing motor
Speed,timer,etc
IR controller
Display
AC Source
Buzz
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Benefit of this solution

• High performance of EMC
• Low cost
• No external crystal
• No 7805
• Few resistors and capacitors
• Easy to fit different requirements of customers

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Schedule

• 2004.3 Complete all of the functions
• 2004.36 Test by customer