A battery is a collection of electrochemical cells.
Cells are connected in series or parallel depending on the purpose which we
wish to achieve when they are connected in a circuit. Cells are connected
either to increase its capacity or its voltage.
Cells are connected in series or parallel depending on the purpose which we
wish to achieve when they are connected in a circuit. Cells are connected
either to increase its capacity or its voltage.
Connecting Cells in Series
When cells are connected in series, this is done to
increase the output voltage while maintaining the same capacity rating (amp
hours). To connect two cells (for example) in series, we use a jumper battery
and the positive of the second battery. Run your negative wire off the open
connector from the first battery and your positive of the open connector on
u=your second battery. When cells are connected in the same other and they are
all connected in the same direction, the total potential difference supplied to
the circuit is the individual potential difference added together.
increase the output voltage while maintaining the same capacity rating (amp
hours). To connect two cells (for example) in series, we use a jumper battery
and the positive of the second battery. Run your negative wire off the open
connector from the first battery and your positive of the open connector on
u=your second battery. When cells are connected in the same other and they are
all connected in the same direction, the total potential difference supplied to
the circuit is the individual potential difference added together.
Vtotal = V1 + V2 +
V3 + … + Vn
V3 + … + Vn
Cells are connected in parallel in parallel to
increase their capacity (amp hours) while maintaining the voltage of one of the
individual batteries. To connect cells in parallel, use a jumper wire to
connect between the positive of the cells and then use another jumper wire to
connect the negatives of the cells. Then connect the positive and negative
wires connected to the some cell to the circuit. When identical cells are
connected in parallel with each other, the total potential difference supplied
to the circuit is equal to the potential difference of just one of the cells.
increase their capacity (amp hours) while maintaining the voltage of one of the
individual batteries. To connect cells in parallel, use a jumper wire to
connect between the positive of the cells and then use another jumper wire to
connect the negatives of the cells. Then connect the positive and negative
wires connected to the some cell to the circuit. When identical cells are
connected in parallel with each other, the total potential difference supplied
to the circuit is equal to the potential difference of just one of the cells.
Vtotal = V1 = V2 =
V3
V3
So if three 2V cells are connected in parallel with
each other, the potential difference supplied to the circuit is 2V. An example
of cells connected in parallel is shown below
each other, the potential difference supplied to the circuit is 2V. An example
of cells connected in parallel is shown below
Important note: when connecting cells together, it
is important to note the following points
is important to note the following points
1.
Find out the requirement for your application. For example, doubling the
capacity or voltage when you are not supposed to can lead to burning of the
application.
Find out the requirement for your application. For example, doubling the
capacity or voltage when you are not supposed to can lead to burning of the
application.
2.
Follow the recommended guidelines for your application
Follow the recommended guidelines for your application
3.
Don’t use two different chemistries when connecting a pack. Usually the
voltage will be different, but more importantly the charge rates will be
different and the capacities may be different, thus resulting in a shortened
life span.
Don’t use two different chemistries when connecting a pack. Usually the
voltage will be different, but more importantly the charge rates will be
different and the capacities may be different, thus resulting in a shortened
life span.
4.
Try to match capacities as much as possible. When connecting cells in a
pack, you should try to match the capacities as much as possible to avoid
discharging one battery quicker than voltage so one cell that discharge quicker
will likely discharge deeper than it may be able to recover from.
Try to match capacities as much as possible. When connecting cells in a
pack, you should try to match the capacities as much as possible to avoid
discharging one battery quicker than voltage so one cell that discharge quicker
will likely discharge deeper than it may be able to recover from.
