GB/T 321-1980
Replaced
T/CI 038-2021
Active
Group standards
T/CI 038-2021 Test Method for Average Specific Heat Capacity of Lithium-ion Battery Cells
T/CI 038-2021
Price:
$ 20.00
Basic Information
Standard Code:
T/CI 038-2021
Standard Type:
Group standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Power supply
ICS Name:
Integrated Metrology and Measurement
Publish Date:
2021-12-27
Implement Date:
2021-12-27
Scope
Scope: This standard specifies the technical requirements for the heat capacity test method of lithium-ion battery cells. This standard applies to the power batteries of new energy vehicles and energy storage batteries, and other types of batteries can refer to it for implementation; Main technical content: 3.1 Lithium-ion battery (lithium ion battery, referred to as battery) is a kind of battery that uses lithium ions as conductive ions to move between the anode and cathode, and realizes charging and discharging by converting chemical energy and electrical energy. [GB/T 19596-2017, Definition 3.3.1.2.1] 3.2 Lithium-ion battery cell (lithium ion battery cell, referred to as battery cell) is a basic lithium-ion battery unit device that converts chemical energy and electrical energy. It consists of a positive electrode, a negative electrode, a separator, an electrolyte, a shell, and terminals, etc. [GB/T 36276-2018, Definition 3.1.1] 3.3 Battery average specific heat capacity (battery mean specific heat capacity) is the amount of heat required to raise the temperature of a unit mass of battery by 1K, which is the average heat within a specified temperature range. 3.4 State of charge (state of charge) is the percentage of the capacity that can be released under specified discharge conditions in the current battery compared to the available capacity. [GB/T 19596-2017, Definition 3.3.3.2.5] 3.5 Battery average temperature (mean battery temperature) is the temperature obtained by taking the arithmetic average of the multi-point temperature measurements on the battery surface and is referred to as battery temperature. 3.6 Battery average temperature rise (mean battery temperature rise) is the difference between the battery average temperature and the ambient temperature, which is referred to as battery temperature rise. 3.7 Battery heat loss (battery heat loss) is the decrease in thermodynamic energy corresponding to the decrease in battery average temperatur