Battery capacity is one of the important performance indicators to measure the performance of the battery, the capacity of the battery has the rated capacity and the actual capacity, under certain conditions (discharge rate, temperature, termination voltage, etc.) the battery released electricity is called the rated capacity (or nominal capacity). Common units of capacity are mAh, Ah=1000mAh. Taking 51.2VV, 100Ah battery as an example, it means that the capacity of the battery is 51.2V×100Ah=5120Wh, that is, 5.12KWh.
Importance: Determines how much energy is available for use. Higher capacity means the battery can power devices for a longer time.
Definition: The electric potential difference provided by the battery. Typical energy storage batteries operate at 12V, 24V, 48V, or higher.
Importance: Must match the voltage requirements of the connected devices or systems.
Cycle life refers to the service life of the battery during charging and discharging. Cycle life is usually measured by the number of charges and discharges or the depth of the cycle, and batteries with high cycle life can be used longer, reducing the cost and time of battery replacement. The number of complete charge and discharge cycles a battery can undergo before its capacity drops below a specified percentage, typically 80%.
At present, most lithium iron phosphate batteries on the market have a cycle life of more than 6,000 times (80%DoD).
Depth of Discharge (DOD) is a measure of the percentage between the amount of discharge in a battery and the rated capacity of the battery. For the same battery, the DOD depth set is inversely proportional to the battery cycle life, and the deeper the discharge depth, the shorter the battery cycle life. Therefore, it is important to balance the required operating time of the battery with the need to extend the battery cycle life.
For instance, a 90% DoD means you can use up to 90% of the battery's capacity. Lithium-ion batteries typically allow for deeper discharges than lead-acid ones.
The English State of battery Charge is the State of Charge, referred to as SOC, refers to the ratio of the remaining capacity of the battery after use for a period of time or long-term use to the capacity of the fully charged state, usually expressed as a percentage, simply speaking, the remaining power of the battery.
C is used to indicate the battery charge and discharge capacity rate. Charge and discharge rate = charge and discharge current/rated capacity. For example: when a battery with a rated capacity of 100Ah is discharged at 50A, its discharge rate is 0.5C. 1C, 2C, and 0.5C are battery discharge rates, which are a measure of discharge speed. If the used capacity is discharged in 1 hour, it is called 1C discharge; if it is discharged in 2 hours, it is called 1/2=0.5C discharge. Generally, the capacity of the battery can be detected through different discharge currents. For a 24Ah battery, the 1C discharge current is 24A and the 0.5C discharge current is 12A. The larger the discharge current. The discharge time is also shorter.
Usually when talking about the scale of an energy storage system, it is expressed by the maximum power of the system/system capacity (KW/KWh). For example, the scale of an energy storage power station is 500KW/1MWh. Here 500KW refers to the maximum charge and discharge of the energy storage system. Power, 1MWh refers to the system capacity of the power station. If the power is discharged with a rated power of 500KW, the capacity of the power station is discharged in 2 hours, and the discharge rate is 0.5C.
Battery capacity is one of the important performance indicators to measure the performance of the battery, the capacity of the battery has the rated capacity and the actual capacity, under certain conditions (discharge rate, temperature, termination voltage, etc.) the battery released electricity is called the rated capacity (or nominal capacity). Common units of capacity are mAh, Ah=1000mAh. Taking 51.2VV, 100Ah battery as an example, it means that the capacity of the battery is 51.2V×100Ah=5120Wh, that is, 5.12KWh.
Importance: Determines how much energy is available for use. Higher capacity means the battery can power devices for a longer time.
Definition: The electric potential difference provided by the battery. Typical energy storage batteries operate at 12V, 24V, 48V, or higher.
Importance: Must match the voltage requirements of the connected devices or systems.
Cycle life refers to the service life of the battery during charging and discharging. Cycle life is usually measured by the number of charges and discharges or the depth of the cycle, and batteries with high cycle life can be used longer, reducing the cost and time of battery replacement. The number of complete charge and discharge cycles a battery can undergo before its capacity drops below a specified percentage, typically 80%.
At present, most lithium iron phosphate batteries on the market have a cycle life of more than 6,000 times (80%DoD).
Depth of Discharge (DOD) is a measure of the percentage between the amount of discharge in a battery and the rated capacity of the battery. For the same battery, the DOD depth set is inversely proportional to the battery cycle life, and the deeper the discharge depth, the shorter the battery cycle life. Therefore, it is important to balance the required operating time of the battery with the need to extend the battery cycle life.
For instance, a 90% DoD means you can use up to 90% of the battery's capacity. Lithium-ion batteries typically allow for deeper discharges than lead-acid ones.
The English State of battery Charge is the State of Charge, referred to as SOC, refers to the ratio of the remaining capacity of the battery after use for a period of time or long-term use to the capacity of the fully charged state, usually expressed as a percentage, simply speaking, the remaining power of the battery.
C is used to indicate the battery charge and discharge capacity rate. Charge and discharge rate = charge and discharge current/rated capacity. For example: when a battery with a rated capacity of 100Ah is discharged at 50A, its discharge rate is 0.5C. 1C, 2C, and 0.5C are battery discharge rates, which are a measure of discharge speed. If the used capacity is discharged in 1 hour, it is called 1C discharge; if it is discharged in 2 hours, it is called 1/2=0.5C discharge. Generally, the capacity of the battery can be detected through different discharge currents. For a 24Ah battery, the 1C discharge current is 24A and the 0.5C discharge current is 12A. The larger the discharge current. The discharge time is also shorter.
Usually when talking about the scale of an energy storage system, it is expressed by the maximum power of the system/system capacity (KW/KWh). For example, the scale of an energy storage power station is 500KW/1MWh. Here 500KW refers to the maximum charge and discharge of the energy storage system. Power, 1MWh refers to the system capacity of the power station. If the power is discharged with a rated power of 500KW, the capacity of the power station is discharged in 2 hours, and the discharge rate is 0.5C.
