Date: 2025-07-11 hits: 101
A. What is the RCH of lithium batteries?
The RCH test of lithium batteries is an important means to evaluate their performance and safety. Through these tests, we can understand the performance and safety of batteries under different conditions, and provide important reference for the development and improvement of batteries.
B. Lithium battery RCH test
1. R test: Test the charge and discharge performance of the battery. Through the cyclic charge and discharge process, evaluate the performance of the battery under different charge and discharge conditions, such as capacity, charge and discharge efficiency, energy density and other parameters.
2. C test: Test the cycle life of the battery. By simulating the charge and discharge cycle of the battery in actual use, the battery life and capacity loss are evaluated. The C test can understand the degree of performance degradation of the battery under different charge and discharge conditions.
3. H test: Test the safety of the battery. By checking the performance of the battery under abnormal conditions, such as high temperature, overcharge, over discharge and other extreme conditions, the safety performance of the battery is evaluated. The H test can find possible safety hazards of the battery and ensure the safety of the battery during use. In addition, the RCH test of lithium batteries usually requires the submission of application materials, including a list of product components and a declaration of the same material. At the same time, according to the requirements of different test items, it may be necessary to provide battery samples of the main inspection model.
C. Test purpose
The purpose of this lithium battery RCH test is to evaluate the performance of lithium batteries under R (reverse) C (charge) H (high temperature) conditions to ensure their safety and reliability in actual use.
D. Test equipment and methods
1. Equipment: lithium battery test cabinet, constant temperature box, charge and discharge tester, data acquisition system, etc.,
2. Method: Place the lithium battery in a constant temperature box according to the test standard to simulate a high temperature environment. Then, the lithium battery is reversely charged and discharged through the charge and discharge tester, and the data is recorded in real time.
E. Test results
1. Reverse charging: In a high temperature environment, the reverse charging performance of the lithium battery is stable. No abnormal phenomena such as overheating, voltage abnormality, etc.
2. Charging performance: In a high temperature environment, the charging performance of the lithium battery is reduced. But it is still within an acceptable range and will not affect normal use.
3. Discharge performance: In a high temperature environment, the discharge performance of the lithium battery is good and no abnormal phenomena occur.
F. Problems and improvement measures
1. Problem: During the charging process, some lithium batteries have a phenomenon of excessive temperature rise. Improvement measures: Optimize the charging strategy and reduce the charging current to slow down the temperature rise rate.
2. Problem: The capacity of some lithium batteries has decreased. Improvement measures: Optimize the manufacturing process of lithium batteries to improve their capacity retention rate in high temperature environments.
G. Conclusion
Through this RCH test, we found that lithium batteries can still maintain good performance in high temperature environments. But there is still room for improvement, and optimization needs to be made for existing problems. In the future, we will continue to pay attention to the performance of lithium batteries to provide strong guarantees for their safety and reliability in practical applications.
