Method and device for predicting service lifetime of second-hand battery

A battery and second-hand technology, applied in the field of vehicles, can solve the problems of different service life of second-hand batteries, and the service life of second-hand batteries affects the secondary utilization of second-hand batteries.

Active Publication Date: 2019-12-10
NEUSOFT REACH AUTOMOBILE TECH (SHENYANG) CO LTD
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Problems solved by technology

[0004] However, since different used batteries have different energy storage parameters, the service life of different used batteries is different, and the length of the service life of the second-hand battery affects the secondary utilization of the second-hand battery. Therefore, how to accurately determine the service life of the second-hand battery is Problems that must be solved when using second-hand batteries

Method used

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  • Method and device for predicting service lifetime of second-hand battery
  • Method and device for predicting service lifetime of second-hand battery

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Embodiment approach

[0078] As an implementation manner, S5 may specifically include steps S51-S52:

[0079] S51: According to the historical SOH attenuation trend, the actual energy storage parameter and the SOH use attenuation factor, acquire the SOH use attenuation trend.

[0080] Among them, the SOH usage decay trend is used to record the decay trend of the energy storage performance of the second-hand battery when the second-hand battery is applied to the target usage scenario.

[0081] It should be noted that the embodiment of the present application does not limit the acquisition method of the SOH use attenuation trend, for example, curve fitting can be performed according to the SOH historical attenuation trend, the actual energy storage parameters and the SOH use attenuation factor, and Fit the curve as SOH using the decay trend.

[0082] It should also be noted that the embodiment of the present application does not limit the expression of the SOH use decay trend. For example, for the i...

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Abstract

The invention discloses a method and device for predicting the service lifetime of a second-hand battery. The method comprises the following steps: acquiring historical use information, performance test information and a target use scene of the second-hand battery; determining an SOH historical attenuation trend, an actual energy storage parameter and an SOH usage attenuation factor according to the historical usage information, the performance test information and the target usage scenario; determining the service lifetime of the second-hand battery in the target usage scenario according to the SOH historical attenuation trend, the actual energy storage parameter and the SOH usage attenuation factor. The SOH historical attenuation trend, the actual energy storage parameter and the SOH usage attenuation factor are important parameters influencing the service lifetime of the second-hand battery, and therefore, when the service lifetime of the second-hand battery is determined accordingto the SOH historical attenuation trend, the actual energy storage parameter and the SOH usage attenuation factor, the service lifetime of the second-hand battery in the target use scene can be accurately predicted, so that the second-hand battery can be effectively reutilized.

Description

technical field [0001] The present application relates to the technical field of vehicles, in particular to a method and device for predicting the service life of a second-hand battery. Background technique [0002] With the popularity of electric vehicles, the use of batteries has increased dramatically. At present, when it is determined that the battery cannot meet the energy supply demand of the electric vehicle, it is necessary to replace the old battery with a new battery, so as to continue to use the new battery to supply energy for the electric vehicle. [0003] Among them, since the replaced old battery (hereinafter referred to as the second-hand battery) still has energy storage and energy supply, and the second-hand battery can also provide energy in other application scenarios, therefore, in order to achieve full utilization of battery resources, the Second-hand batteries are used in other application scenarios to realize the secondary utilization of second-hand ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/367G01R31/392
CPCG01R31/367G01R31/392
Inventor 郭毅高雁飞王尧峰
Owner NEUSOFT REACH AUTOMOBILE TECH (SHENYANG) CO LTD
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