Method and device for estimating health state of lithium ion battery
A battery state of health, lithium-ion battery technology, applied in the field of battery parameter research, can solve problems such as research lag
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[0042] In order to solve the technical problem of the lack of a method for accurately estimating the state of health of a lithium ion battery in the prior art, the present application discloses a method and device for estimating the state of health of a lithium ion battery through the following embodiments.
[0043] The first embodiment of the present application discloses a method for estimating the state of health of a lithium-ion battery, see figure 1 As shown in the schematic diagram of the workflow, the method for estimating the state of health of the lithium-ion battery includes:
[0044] Step S1, according to the iterative formula of the Kalman filter algorithm, determine the initial value of the system state, and determine the state of health of the lithium-ion battery as a state variable.
[0045] Further, the initial value of the system state includes an initial health state, an initial error covariance and a noise variance, wherein the noise variance includes a syst...
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