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Method for predicting working condition and service life stage of vehicle lithium ion battery based on summer climate

A technology for lithium-ion batteries and vehicles. It is applied in the direction of measuring electricity, measuring devices, and measuring electrical variables. It can solve the problems of increasing economic costs and delaying the development cycle of complete vehicles, and achieves the goal of reducing economic costs and shortening life test time. Effect

Pending Publication Date: 2020-11-13
CATARC AUTOMOTIVE TEST CENT TIANJIN CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the long-term life cycle increases the economic cost, and also delays the development cycle of the whole vehicle in time, and the final result may not be able to reflect the battery life of the vehicle based on the user's use.

Method used

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  • Method for predicting working condition and service life stage of vehicle lithium ion battery based on summer climate
  • Method for predicting working condition and service life stage of vehicle lithium ion battery based on summer climate
  • Method for predicting working condition and service life stage of vehicle lithium ion battery based on summer climate

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Embodiment Construction

[0025] The present invention will be described in further detail below by way of examples.

[0026] Taking a certain ternary lithium-ion battery system as an example, the sample information is shown in Table 1.

[0027] Table 1 Basic information table of battery system samples

[0028]

[0029] According to technical scheme of the present invention, carry out typical implementation steps and result as follows:

[0030] a) Place the battery system in a GIANT FORCE brand ETH-1000-40-CP-SD environmental chamber at 25°C for 24 hours to allow the temperature of each monomer in the system to reach equilibrium;

[0031] b) Use the Bitrode brand FTF2-500 / 100-750 current controller to charge the battery to 100% SOC with a rated capacity of 228A;

[0032] c) Stand still for 30 minutes;

[0033] d) Use the Bitrode brand FTF2-500 / 100-750 current controller to discharge the battery with a rated capacity of 228A to 100% DOD cut-off condition;

[0034] e) Stand still for 30 minutes; ...

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Abstract

The invention discloses a method for predicting the working condition and the service life stage of a vehicle lithium ion battery based on summer climate. According to the method, the environmental temperature and humidity characteristics and the positive intervention effect of thermal management are considered, a power battery cycle test working condition based on domestic summer climate conditions and a battery life stage prediction method based on the working condition are provided. The method can effectively simulate the stage of the service life of the battery system under the use condition of the user side of the electric vehicle, reduces the real test economic cost of the vehicle, shortens the test time of the service life of the whole vehicle battery, provides an equivalent whole vehicle state battery for developers, and facilitates the subsequent obtaining of the electrical performance, safety and reliability of the needed whole vehicle state battery.

Description

technical field [0001] The invention relates to the field of lithium-ion batteries, in particular to a method for predicting the working conditions and life stages of lithium-ion batteries for vehicles based on summer climate. Background technique [0002] In recent years, under the impetus of policies, the new clean energy automobile industry, which uses electric energy as the driving energy instead of traditional fuel, has developed rapidly. Among them, the power battery is a vital component for electric vehicles. The power battery is not only the core of electric vehicles, but also the energy source of electric vehicles. It is directly related to the power performance and battery life of electric vehicles, and is also directly related to the safety of electric vehicles. Power battery technology has always been closely related to the practicality and promotion of electric vehicles. The research and development and testing technology of power batteries has always been the ...

Claims

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Application Information

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IPC IPC(8): G06F30/20G01R31/392G06F119/02G06F119/04
CPCG06F30/20G01R31/392G06F2119/02
Inventor 陈立铎王芳林春景刘仕强马天翼姜成龙樊彬李玉鹏
Owner CATARC AUTOMOTIVE TEST CENT TIANJIN CO LTD
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