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Method and system for detecting service life of power battery for vehicles

A technology of a power battery and a detection method, which is applied in the direction of measuring electricity, measuring devices, and measuring electric variables, etc., which can solve the problem that the service life of the power battery cannot be reliably reflected, the test environment is harsh, the charge-discharge rate is tested, and the driving range of the vehicle cannot be obtained. and other problems, to achieve the effect of accurate and reliable service life detection, accurate and reliable detection, and accurate remaining service time

Inactive Publication Date: 2018-12-11
BEIJING BORGWARD AUTOMOBILE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the energy-type battery pack test method specified in ISO12405-2, the test conditions are not applicable to all battery products (where the test environment is harsh and the test charge and discharge rate is large), for example, the charging / discharging current of the power battery, the power battery Temperature, etc. have an impact on the life of the power battery
Therefore, the service life of the power battery obtained by the test method on the existing standard cannot truly and reliably reflect the real service life of the power battery, and it is impossible to obtain a real and reliable continuation of the vehicle at the end of the life of the power battery. mileage

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  • Method and system for detecting service life of power battery for vehicles
  • Method and system for detecting service life of power battery for vehicles
  • Method and system for detecting service life of power battery for vehicles

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Embodiment Construction

[0025] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0026] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element refe...

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Abstract

The invention provides a method for detection of the service life of a power battery of a vehicle, and a system. The method comprises obtaining vehicle test data which comprises charging / discharging current curves of the power battery in a preset time, performing charging / discharging cycle tests on the power battery by utilizing charging / discharging currents corresponding to the charging / discharging current curves, recording the residual capacity of the power battery when a preset cycle number is reached, obtaining the service life decay rate of the power battery in the charging / discharging processes of the preset cycle number according to the residual capacity, and calculating a residual using time of the power battery from an SOH of the power battery reduces to a preset SOH according to the life decay rate. According to the embodiment of the invention, the method for detection of the service life of the power battery of the vehicle has the advantages of high detection efficiency and accurate service life detection of the power battery.

Description

technical field [0001] The invention relates to the technical field of battery life detection, in particular to a method and system for detecting the life of a power battery of a vehicle. Background technique [0002] At present, with the energy crisis and environmental problems, new energy vehicles such as electric vehicles and hybrid vehicles are developing rapidly. The cycle life of the high-voltage battery pack (that is, the power battery) for new energy vehicles is particularly important. The calculation of the service life of the power battery can only be based on enterprise specifications and some international standards. For example, the energy-type battery pack test method specified in ISO12405-2, the test conditions are not applicable to all battery products (where the test environment is harsh and the test charge and discharge rate is large), for example, the charging / discharging current of the power battery, the power battery Temperature, etc. have an impact on ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/36
Inventor 曹海军
Owner BEIJING BORGWARD AUTOMOBILE CO LTD
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