Establishment method and device of battery pack service life attenuation model and related product
A technology of attenuation model and establishment method, applied in computer-aided design, design optimization/simulation, calculation, etc., can solve the problems of inability to predict battery pack life attenuation, consuming experimental cost, and difficult to establish battery pack life attenuation model, etc.
Pending Publication Date: 2021-04-16
NEUSOFT REACH AUTOMOBILE TECH (SHENYANG) CO LTD
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Problems solved by technology
Even if the life attenuation data is obtained experimentally, on the one hand, it needs to consume the cost of the experiment, and on the other hand, the battery pack used in the experiment cannot continue to be applied to the newly launched electric vehicles
Due to the lack of battery pack life attenuation data and cost reasons, it is difficult to establish a battery pack life attenuation model at present, so it is impossible to accurately predict the life attenuation of battery packs for newly launched electric vehicles
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[0037] As described above, it is difficult to establish an accurate battery pack life decay model for new electric vehicles currently on the market due to the lack of life decay data of their battery packs. If the life attenuation data is obtained through experiments, there is a cost problem due to the loss of experiments. Under the conditions of lack of data and cost constraints, how to establish an accurate battery pack life decay model has become a major problem.
[0038] Based on the above problems, the inventor provides a method, device and related products for establishing a battery pack life attenuation model after research. In the technical solution of the present application, a basic model is firstly established as a basic model of the life decay of the target battery pack by using readily available and sufficient reference battery pack usage data and life decay data. And the mapping relationship between the target battery pack and the reference battery pack on the u...
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The invention discloses an establishment method and device of a battery pack service life attenuation model and a related product. The method comprises steps: establishing a service life attenuation basic model of a target battery pack according to the use data and the service life attenuation data of the reference battery pack; obtaining usage data of the target battery pack; performing transfer learning according to the use data of the target battery pack and the use data of the reference battery pack to obtain a mapping relationship between the use data of the target battery pack and the use data of the reference battery pack; and obtaining a life attenuation model of the target battery pack according to the mapping relationship and the life attenuation basic model. The target battery pack service life attenuation basic model is established based on the reference battery pack use data and the service life attenuation data, and the matching degree of the model can be improved when the service life attenuation basic model is utilized by establishing the mapping relationship between the use data of the target battery pack and the use data of the reference battery pack; therefore, the obtained life attenuation model can better serve life attenuation prediction of the target battery pack.
Description
technical field [0001] The present application relates to the field of battery technology, in particular to a method, device and related products for establishing a life decay model of a battery pack. Background technique [0002] Data on the life decay of EV battery packs is often lacking until a new EV hits the market. Even if the life attenuation data is obtained experimentally, on the one hand, it needs to consume the cost of the experiment, and on the other hand, the battery pack used in the experiment cannot continue to be applied to the newly launched electric vehicles. Due to the lack of battery pack life decay data and cost reasons, it is currently difficult to establish a battery pack life decay model, so it is impossible to accurately predict the life decay of battery packs for newly launched electric vehicles. For the battery packs of such newly launched electric vehicles, how to establish an accurate battery pack life decay model has become an urgent technical ...
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IPC IPC(8): G06F30/27G06F119/04
Inventor 郭毅
Owner NEUSOFT REACH AUTOMOBILE TECH (SHENYANG) CO LTD