Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

How to recharge a lithium battery pack ?

Status
Not open for further replies.

Externet

Advanced Member level 2
Joined
Jan 29, 2004
Messages
574
Helped
28
Reputation
58
Reaction score
29
Trophy points
1,308
Location
Mideast US
Activity points
5,603
Hi.
A Hoover brand 18V battery pack with 5 cells has three terminals. (+), (-) and (C)
How to learn what signal this particular 'C' battery pack contact expects to enter into charging mode ? The pack uses a microcontrolled management circuitry in it.
For sure signal is not needed at 'C' to discharge the battery. It powers the load fine with nothing connected to 'C'

----> **broken link removed**

Am using this orphan pack for another application and do not have the charger. When applying 24V to (+) and (-) and jumping 'C' to (+) ; cells charge fine for 3 seconds, slowly raising voltage. Repeatedly jumping, they keep rising (charging) fine. Could the pack expect a pulsing signal to terminal 'C' ? Anyone knows ?
 

Hi,

Read about the charging methods.
Read through battery manufacturer provided documents.
Read through batteryuniversity.com
Read through other informations.

At each source you will immediately learn that
When applying 24V to (+) and (-)
...is not a good idea.

Klaus
 

I had read what you suggested and also found nothing from the manufacturer; that is why posted here if someone knew details.

The (+) and (-) terminals of the battery pack are not connected to the cell series; there is mosfets driven by the charging management circuit that 'modulate/control' charging according to each cell balancing status, voltage, current and temperature.
Similar to :
 

Attachments

  • 0117_TI_Li-ion_safety_F2.gif
    0117_TI_Li-ion_safety_F2.gif
    38.9 KB · Views: 91

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top