Method and device for detecting capacity fading of power lithium battery

A technology of capacity attenuation and capacity attenuation rate, which is applied in the direction of measuring devices, measuring electrical variables, measuring electricity, etc., can solve problems such as cumbersome and complicated processes and affect the normal operation of electric vehicles, and achieve the effect of simple process

Inactive Publication Date: 2015-06-03
POTEVIO NEW ENERGY VEHICLE TECH +1
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Problems solved by technology

[0004] The embodiment of the present invention provides a detection method and device for power lithium battery capacity attenuation to solve the problem in the prior art that detection of power lithium battery capacity attenuation requires professional instruments, the process is cumbersome and complicated, and affects the normal operation of electric vehicles

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  • Method and device for detecting capacity fading of power lithium battery
  • Method and device for detecting capacity fading of power lithium battery
  • Method and device for detecting capacity fading of power lithium battery

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Embodiment Construction

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0033] Such as figure 1 As shown, the detection method for the power lithium battery capacity decay provided by the embodiment of the present invention includes:

[0034] Step 101. Obtain historical charging and discharging data of the power lithium battery.

[0035] Step 102: Generate a relationship curve between the capacity of the power lithium battery and time according to the historical charging and discharging data.

[0036] Step 103, according to the ...

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Abstract

The invention provides a method and device for detecting the capacity fading of a power lithium battery, and relates to the technical field of electric vehicles. The method comprises the following steps: obtaining the historical data of charging and discharging the power lithium battery; according to the historical data of charging and discharging, generating a relation curve between the capacity and the time of the power lithium battery; according to the relation curve, determining the power lithium battery capacities corresponding to all the time sampling points; obtaining an initial capacity and a current capacity of the power lithium battery among the power lithium battery capacities corresponding to all the time sampling points; according to the initial capacity and the current capacity, determining the rate of the capacity fading of the power lithium battery. According to the method and device disclosed by the invention, the problem in the prior art that a professional instrument is needed to detect the capacity fading situation of the power lithium battery is solved, the process is tedious and complex, and the normal operation of an electric vehicle is influenced.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a method and device for detecting capacity decay of a power lithium battery. Background technique [0002] With the gradual depletion of current oil resources, the prospect of fuel vehicles is worrying. At present, electric vehicles powered by power lithium batteries have gradually developed. An electric vehicle refers to a vehicle that is powered by a vehicle-mounted power supply and uses a motor to drive the wheels. The power lithium battery is generally the key energy source of electric vehicles. [0003] With the long-term use of power lithium batteries, their capacity is gradually attenuating, and the capacity attenuation of power lithium batteries is a problem that must be faced in the promotion and use of electric vehicles. The capacity decay of the power battery determines the usable value of the power battery. At present, in order to accurately determine th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36
Inventor 周虎牟其勇陈延伟张红昌赵迎宾金佺良贾艳双王丁磊
Owner POTEVIO NEW ENERGY VEHICLE TECH
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