Differences Between Power Lithium Batteries and Regular Lithium Batteries
The power source for new energy vehicles is the power lithium battery, which serves as a supply of power for road transportation vehicles. The power lithium battery differs from regular lithium batteries in several key aspects:
1. Nature
Power lithium batteries are specifically designed to supply power for transportation vehicles, distinguishing them from small batteries used to power portable electronic devices. They typically have a larger volume and higher capacity.
On the other hand, regular batteries are primary batteries that use lithium metal or lithium alloys as the negative electrode material and a non-aqueous electrolyte solution. They differ from rechargeable lithium-ion batteries and lithium polymer batteries.
2. Different Battery Capacities
In the case of new batteries, testing the battery capacity with a discharge meter reveals that power lithium batteries typically have a capacity of around 1000-1500mAh.
On the other hand, regular batteries often boast capacities of 2000mAh or higher, with some reaching up to 3400mAh.
3. Voltage Differences
The operating voltage of power lithium batteries is generally slightly lower than that of regular lithium batteries.
The maximum charging voltage for regular lithium-ion batteries is 4.2V, whereas power lithium batteries have a maximum charging voltage of around 3.65V.
The nominal voltage for regular lithium-ion batteries is 3.7V, while power lithium-ion batteries have a nominal voltage of 3.2V.
4. Different Discharge Power
A 4200mAh power lithium battery can release a significant amount of electricity in just a few minutes, a feat that regular lithium batteries cannot achieve. Therefore, the discharge capability of regular batteries cannot compare to that of power lithium batteries.
The most significant difference between power lithium batteries and regular batteries lies in their high discharge power, surpassing energy density.
Given that power batteries are primarily used for vehicular energy supply, they require a higher discharge power compared to regular batteries.
5. Different Applications
The battery that supplies driving power for electric vehicles is referred to as a power lithium battery. This includes traditional lead-acid batteries, nickel-metal hydride batteries, and emerging lithium-ion power batteries, categorized into power-type lithium batteries (hybrid electric vehicles) and energy-type lithium batteries (pure electric vehicles).
Lithium-ion batteries used in consumer electronics such as mobile phones and laptops are generally referred to as lithium-ion batteries, distinguishing them from the power lithium batteries used in electric vehicles.
6. Safety
Power lithium batteries may pose safety issues such as explosion or fire under high temperature, high pressure, or overcharging conditions.
Regular lithium batteries, on the other hand, generally do not face such situations unless subjected to extreme conditions.