Download Battery Technology Life Verification Test Manual by Haskins H., Battaglia V., Christophersen J. PDF

By Haskins H., Battaglia V., Christophersen J.

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Reference Testing at Reference Temperature: • Reduce cell temperature to the reference temperature (30°C) at the specified rate. 2. • If testing is continuing, return to Step 1. 3 Reference Performance Tests and End-of-Test Criteria Reference performance tests (RPTs) are performed (a) before the start of life testing, (b) at defined periodic intervals, and (c) at end of testing, for all devices undergoing either cycle life testing or stand life (calendar life) testing. The minimum reference performance test regime during life testing consists of performing the minimum pulse power capability (MPPC) test at both the test temperature and the reference temperature (30°C).

The simulated ASI data were analyzed by ROR (see Appendix B) to obtain estimates of the model parameters. Using the parameter estimates, LTEST was estimated as described above. 39 The uncertainty of the various estimated model parameters and life on test can be assessed by using the bootstrap, which is a procedure for estimating the uncertainty associated with complex estimation procedures. , see Reference 7). The motivation for using the bootstrap here is the complex nature of the estimation procedure ROR for which it is difficult to analytically derive a useful estimate of the standard errors for the model parameters: ASI0, βο, and β1.

30 2. Cycling at (Low) Test Temperature: • Conduct a sequence of 100 or more of the specified power profiles to verify that charge neutrality is being maintained. • Continue application of the specified power profiles for the specified number of profiles between successive RPTs. 3. Reference Testing at Reference Temperature: • Increase cell temperature to the reference temperature (30°C) at the specified rate. 2. • Taper recharge the cell to SOCMAX. • If testing is continuing, return to Step 1.

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