Method for predicting cycle life of battery pack for electric car
A cycle life and prediction method technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problem that the battery life prediction cannot be done on the battery pack, and achieve the effect of fast and effective cycle life performance and accelerated aging
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[0010] Referring to the accompanying drawings, through the description of the embodiments, the specific embodiments of the present invention include the shape, structure, mutual position and connection relationship of each part, the function and working principle of each part, and the manufacturing process of the various components involved. And the method of operation and use, etc., are described in further detail to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concepts and technical solutions of the present invention.
[0011] The invention provides a method for predicting the cycle life of a power battery pack of an electric vehicle, comprising the following steps:
[0012] Step 1: For a lithium-ion battery pack with a certain rated voltage (>300V), conduct a standard capacity test at room temperature (25±2°C):
[0013] The first step, 1 / 3C constant current discharge to the discharge cut-off voltage of the battery ...
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