Method for detection of service life of power battery of vehicle, and system
A technology of power battery and detection method, which is applied in the direction of measuring electricity, measuring device, measuring electrical variables, etc., can solve the problem that the service life of the power battery cannot be reliably reflected, the test environment is harsh, the charging and discharging rate cannot be obtained, and the driving mileage 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 use time
Inactive Publication Date: 2015-08-12
BEIJING BORGWARD AUTOMOBILE CO LTD
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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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[0025] The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, only used to explain the present invention, and should not be construed as a limitation of the present invention.
[0026] In the description of the present invention, it should be understood that the terms "center", "portrait", "horizontal", "top", "bottom", "front", "rear", "left", "right", " The orientation or positional relationship indicated by vertical, horizontal, top, bottom, inner, outer, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and The description is simplified rather than indicatin...
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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 service life detection method and system for 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 (ie, power battery) for new energy vehicles is very important. The calculation of the service life of the power battery can only be done in accordance with corporate specifications and some international standards. For example, the test method for energy-based battery packs 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, power battery charge / discharge current, power battery Temperature, etc. have an impact on the life of the...
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IPC IPC(8): G01R31/36
Inventor 曹海军
Owner BEIJING BORGWARD AUTOMOBILE CO LTD
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