On today's electric vehicles, the high-voltage battery pack will easily have a high-voltage power of several hundred volts, and these high-voltage batteries are stored in the battery pack.
So how is it connected in this battery pack, let's take a look.
The battery pack is made up of individual cells connected to form a high voltage. Several single cells are connected to form a battery module, and then multiple battery modules are connected in series to form a battery pack.
The connection mode can be series and first parallel and then series two situations, series is a way to directly connect the positive electrode of a single battery to the negative electrode in series, and the total voltage of its series is the sum of the voltage of each single cell.
First parallel and then series is to connect two or more single batteries into a unit in parallel by connecting the positive electrode to the positive electrode and the negative electrode to the negative electrode, and then connecting a plurality of such units in series to form a battery pack, the voltage of each parallel unit is equal to the voltage of a single battery, but the capacity has increased, and the total voltage of the module is the sum of the voltages of each unit.
At present, there are only two ways to connect electric vehicle battery packs on the market, and the only difference is the size and number of batteries.
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