Method, device, storage medium and electronic equipment for determining reliability of power battery system
A power battery, reliability technology, applied in electric vehicles, vehicle energy storage, transportation and packaging, etc., can solve the problem of inability to evaluate the reliability of the whole system
Active Publication Date: 2022-05-17
SVOLT ENERGY TECHNOLOGY CO LTD
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[0003] In the prior art, each component of the power battery system is tested separately, and the reliability value of each component of the power battery system is obtained according to the test data, and the reliability of the whole system is determined according to the reliability value of each component. For example, the result of multiplying the reliability values of each component is used as the reliability of the whole system, but this way of calculating the reliability of the whole system also makes it impossible to evaluate the reliability of the whole system in the prior art confidence in the results
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[0047] Specific embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.
[0048] As mentioned in the background art, the power battery is one of the core components of the electric vehicle, and its safety is the first issue to be considered and solved in the development of the electric vehicle. Since the power battery system involves subsystems or components in multiple fields such as electronics, electricity, structure, and materials, it can be divided into large-scale complex systems in engineering. Solving the reliability of such a complex system has always been a difficult problem in the industry, because the reliability distribution models of different subsystems or components may be unknown, and it is difficult to use mathema...
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The present disclosure relates to a method, device, storage medium and electronic equipment for determining the reliability of a power battery system, so as to solve the problem in the prior art that the reliability of a power battery system satisfying a certain confidence level condition cannot be calculated. The method includes: obtaining the reliability data corresponding to each component in the multiple components of the power battery system; performing logarithmic transformation on each reliability value in each reliability data to obtain the respective reliability data of each component. Corresponding reliability logarithmic data; multiple logarithmic sums are calculated according to the plurality of reliability logarithmic data; according to the first normal distribution model and the first confidence level condition that the multiple logarithmic sums meet, Determine the target logarithm and value satisfying the first confidence level condition; perform antilog calculation on the target logarithm sum value, and obtain the target reliability of the power battery system satisfying the first confidence level condition.
Description
technical field [0001] The present disclosure relates to the technical field of power batteries, and in particular, to a method, device, storage medium and electronic equipment for determining the reliability of a power battery system. Background technique [0002] As one of the core components of electric vehicles, the safety of power batteries is the first problem to be considered and solved in the development of electric vehicles. Since the power battery system involves subsystems or components in multiple fields such as electronics, electricity, structure, and materials, it can be divided into large-scale complex systems in engineering. It has always been a difficult problem in the industry to solve the reliability of such a complex system. [0003] In the prior art, each component of the power battery system is tested separately, and the reliability value of each component of the power battery system is obtained according to the test data, and the reliability of the wh...
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IPC IPC(8): G06F30/20G06F119/02
CPCG06F30/20G06F2119/02Y02T10/70
Inventor 高超魏向辉
Owner SVOLT ENERGY TECHNOLOGY CO LTD