As the main energy storage equipment in the fields of electric vehicles, energy storage systems and so on, the determination of the specifications, sizes and parameters of lithium battery pack is of great significance for equipment design, production and application. This article will introduce the specifications, sizes, and parameters of lithium battery pack in detail, including standard specifications, voltage capacity, cycle life, etc., to help readers understand the design and selection of lithium battery pack more comprehensively.

I. Specifications and sizes of lithium battery pack

1. standard size:

   • the size standard of lithium battery pack is usually stipulated by the International Organization for Standardization or relevant industry standards, including size parameters such as length, width, thickness, etc. Common specifications and sizes include 18650, 21700, 26650, etc., representing lithium batteries of different diameters and lengths respectively.

2. Shell material:

   • lithium battery pack metal materials, such as aluminum alloy and steel plate, are usually used to protect the internal structure of the battery and improve safety and stability.

3. Connection method:

   • the connection method of lithium battery pack usually adopts welding, crimping and other methods to ensure that the connection between batteries is firm and reliable.

2. Parameters of lithium battery pack

1. voltage capacity:

   • the voltage capacity of lithium battery pack refers to the amount of electrical energy that the battery pack can store, usually expressed as voltage (V) and capacity (Ah). Lithium battery pack of different specifications have different voltage capacities, and you can select the appropriate voltage capacity according to your needs.

2. Cycle Life:

   • the cycle life of lithium battery pack refers to the performance attenuation of the battery pack after several charge and discharge cycles, usuallyThe number of cycles. Cycle life directly affects the service life and performance stability of battery pack.

3. Charge and discharge efficiency:

   • lithium battery pack charge and discharge efficiency refers to the efficiency of energy conversion during charging and discharging, usually expressed as a percentage. The battery pack with high charge and discharge efficiency can provide higher energy utilization rate.

4. Temperature characteristics:

   • the temperature characteristic of lithium battery pack refers to the performance of battery pack under different temperature conditions, including charge and discharge rate, power output, etc. Temperature characteristics have an important influence on the safety and stability of battery pack.

III. Application of lithium battery pack

1. electric vehicle:

   • as the main energy storage equipment of electric vehicles, lithium battery pack is widely used in the power system of electric vehicles to provide power support for electric vehicles.

2. Energy Storage System:

   • lithium battery pack plays the role of energy storage and release in energy storage system, helping balance grid load and improve energy utilization efficiency.

3. Aerospace:

   • lithium battery pack is also widely used in the field of aerospace, for the power system and standby power supply of aircraft.

4. Consumer electronics:

   • lithium battery pack is also widely used in consumer electronics products, such as mobile phones, tablets, laptops, etc., to provide power support for these devices.