BAT104-7AA-NiCd PC/104 Battery Backup Module Manual
The BAT104 works with the HE104 and V104 Vehicle Power Supplies to create a complete UPS system. For loads less than 30 watts, the BAT104-7AA-NiCd can supply backup power for up to five minutes.
Connect the BAT104 to the HE104 and V104 as follows:
- BAT104 CN3 “Common” to HE104/V104 CN3 terminal 1
- BAT104 CN3 “Battery Out” to HE104/V104 CN3 terminal 2 (and to terminal 3 for voltage monitoring)
- BAT104 CN3 “Battery In”, for external batteries
The BAT104 has a thermal fuse (F2), a current fuse (F1) for protection against overcharging, and shorts on the battery output.
A LM35 temperature sensor (Q3) provides temperature feedback for charge termination, which can be read by the Power Management unit PM104 installed on the HE104 or V104. The LM35 has an output signal of 10mV/degC. For example, at 25 degC the LM35 will output 250mV. The LM35 signal is normally connected to connector CN3 terminal 4 of the HE104 or V104.
Jumper J3 changes the supply source for the LM35 temperature sensor. When the jumper is installed between pins J3-1 and J3-2, the power source is from CN1 main input supply. When the jumper is installed between J3-2 and J3-3, the power source for the LM35 is the +5V from the PC/104 bus. Note: The Main Input source is required only if the LM35 is to be powered by it.
The BAT104 has a Mosfet transistor for isolating the batteries from the HE104 or V104 during extended power outages. The Mosfet transistor isolates the BAT104 whenever the +5V is not on the PC/104 bus and connects the BAT104 batteries whenever +5V is on the PC/104 bus. Therefore, to disconnect the BAT104 from the HE104 or V104, the PM104 just has to turn off the +5V output.
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