Batteries in series
1. Current
In a series battery pack, the current remains constant. This is because there is only one path for the current in a series circuit, and the current remains consistent when passing through each battery. Therefore, no matter how many batteries are connected in series, the total current is equal to the current passing through a single battery.
2. Voltage
The total voltage of a series battery pack is the sum of the voltages of each single battery. If the voltage of each battery is V, and n batteries are connected in series, then the total voltage = Vn
This means that by connecting batteries in series, we can get a higher voltage than a single battery.
3. Capacity
In a series battery pack, the total capacity is the same as the capacity of a single battery. Capacity refers to the amount of charge that a battery can store, and it is usually expressed in ampere-hours (Ah). Since the current path in a series battery is unique and the current consumes the same amount of charge when passing through each battery, the capacity of the entire battery pack does not increase due to the series connection of batteries.
4. Energy
Energy is the product of voltage and capacity, that is, E=VC, where E is energy, V is voltage, and C is capacity. In a series battery pack, although the capacity does not change, the voltage increases. Therefore, the total energy that the entire battery pack can store will also increase.
In summary, connecting batteries in series will result in an increase in voltage and energy, but the current and capacity remain unchanged. This configuration is often used in applications that require higher voltage but relatively small current requirements.
Battery parallel connection
1. Current
In a parallel battery pack, the total current is the sum of the currents of each battery branch. This is because the current in a parallel circuit has multiple paths, and the current on each path may be different, but the total current is equal to the sum of the currents of each branch. Therefore, a parallel battery pack can provide a larger current output than a single battery.
2. Voltage
The total voltage of a parallel battery pack is the same as the voltage of a single battery. In a parallel circuit, the voltages at both ends of each branch are equal and equal to the power supply voltage. Therefore, no matter how many batteries are connected in parallel, the total voltage remains unchanged.
3. Capacity
The total capacity of a parallel battery pack is the sum of the capacities of each battery. Capacity refers to the amount of charge that a battery can store, which reflects the battery’s ability to continuously provide current during discharge. In a parallel battery pack, each battery can provide current independently, so the capacity of the entire battery pack is equal to the sum of the capacities of each battery. This means that a parallel battery pack can provide longer use time or higher energy reserves.
4. Energy
Energy is the product of voltage and capacity, that is, E=VC, where E is energy, V is voltage, and C is capacity. In a parallel battery pack, since the voltage remains unchanged and the capacity increases, the total energy that the entire battery pack can store will also increase.
Summary
Current: The total current of a parallel battery pack is the accumulation of the currents of each branch, which can provide a larger current output.
Voltage: The total voltage of a parallel battery pack is the same as the voltage of a single battery.
Capacity: The total capacity of a parallel battery pack is the accumulation of the capacities of each battery, which can provide longer use time or higher energy reserves.
Energy: Since the voltage remains unchanged and the capacity increases, the total energy that a parallel battery pack can store will also increase.
Post time: Sep-18-2024