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Lithium-ion battery cell test items and indicators Mar 06 , 2022

The basis of battery cell selection is a systematic and comprehensive test and evaluation of the cells. It mainly evaluates whether it meets the application requirements of lithium-ion battery systems from the aspects of cell consistency, temperature characteristics, rate characteristics, pulse power performance, cycle life performance and safety performance. There are many test items for battery ...

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Battery Cell Consistency Test | Battery Cell Incoming Test & Inspection Mar 14 , 2022

The consistency of battery cells has a crucial impact on the performance of the power battery system. The more the number of battery cells in the power battery system, the more obvious the impact of the consistency of the battery cells on the performance, cycle life and safety performance of the battery system. The cell consistency refers to the consistency of incoming battery cells, that is, the ...

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Battery Cell Temperature and Rate Charging Performance Test Mar 20 , 2022

In the complex and changeable actual operating conditions of EVs, EV batteries need to face charging conditions at different temperatures and different current rates. Therefore, it is necessary to analyze the charging performance of battery cells at different temperatures and different current rates. The temperature test is divided into three different temperature conditions: low temperature, norm...

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Battery Cell Temperature and Rate Discharge Performance Test Mar 26 , 2022

Driving range is the main performance indicator of an EV, and this is mainly determined by the available capacity of the EV battery system. Lithium-ion batteries are highly sensitive to temperature and current rate. By analyzing the charge-discharge curve of the battery under different working conditions, and analyzing its charge-discharge capacity and energy and other parameters, the battery's su...

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Battery Cell Constant Power Discharge Performance Test Apr 04 , 2022

The constant-power discharge performance of lithium-ion battery cells is another feature to focus on. Because this determines the ability of the battery system to stabilize the output power, which in turn affects the vehicle performance of the EV. The following table is the main test steps for the constant power discharge test of battery cells at different temperatures and different powers. The ba...

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Battery Cell HPPC Performance Test Apr 13 , 2022

Power characteristics are an important performance indicator of EVs, as well as an important indicator of EV battery cells. HPPC test, short for Hybrid Pulse Power Characterization Test, refers to the test of discharging and feedback (charging) pulses within the range of current and voltage available to the battery to characterize the dynamic power capability of the battery. The main purpose of th...

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Battery Cell Energy Efficiency Test May 11 , 2022

The battery cell energy efficiency refers to the percentage of the discharge energy to the charging energy in the battery charge-discharge cycle under given conditions. Generally speaking, charging and discharging cycle tests are performed on battery cells under different temperature conditions, so as to obtain the energy efficiency of the battery cells. The following table is a simple battery cel...

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Battery Cell Residual Capacity Loss Test | Battery Cell Charge Retention Test Jun 05 , 2022

The residual capacity loss of the battery, also known as the charge retention, is also known as the self-discharge rate. When the battery is in the open circuit state, due to the internal spontaneous reaction, it will cause a certain loss of chemical energy, that is, self-discharge, resulting in a residual capacity loss of the battery. For a specific battery, the battery charge retention is mainly...

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