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Device and method for detecting safety of lithium ion battery for electric bicycle

A technology for lithium-ion batteries and electric bicycles, which is applied in measurement devices, secondary battery testing, secondary batteries, etc., can solve problems such as failure to meet the safety testing requirements of lithium-ion power batteries, imperfect testing systems, and lack of instruments and equipment. Achieve the effect of saving testing expenses, improving reusability, and reducing testing costs

Inactive Publication Date: 2017-05-24
TECHN CENT FOR SAFETY OF INDAL PRODS TIANJIN ENTRY EXIT INSPECTION QUARANTINE BUREAU
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AI Technical Summary

Problems solved by technology

Although some standards have been formulated, the detection system is still far from perfect, the relevant technology is backward, and the equipment is lacking, so it is difficult to provide strong technical support for the implementation of relevant laws and regulations in our country
At present, the main basis for testing is: IEC 62133 "Safety Requirements for Secondary Cells and Batteries Containing Alkaline or Non-acid Electrolyte", QBT_2947.3-2008 "Battery and Charger for Electric Bicycles_Part 1: Lithium Ion Batteries and Chargers", but the above standards and regulations are mainly aimed at portable lithium batteries or mainly focus on the performance requirements of batteries, which cannot meet the safety testing requirements of lithium-ion power batteries for electric bicycles

Method used

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  • Device and method for detecting safety of lithium ion battery for electric bicycle
  • Device and method for detecting safety of lithium ion battery for electric bicycle
  • Device and method for detecting safety of lithium ion battery for electric bicycle

Examples

Experimental program
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Effect test

Embodiment 1

[0068] The detection object is a lithium-ion battery of an electric bicycle of a certain brand. According to the step (1) to detect the lithium-ion analysis, the lithium-ion battery is charged and discharged at different temperatures and with different charge-discharge ratios, including:

[0069] A) Charge at 0.3C at 0°C, discharge at 0.5C, cycle 10 times, and test the battery for lithium analysis;

[0070] B) Charge at 0.7C at 10°C, discharge at 0.5C, cycle 10 times, and test the battery for lithium analysis;

[0071] C) Charge at 1.2C at 20°C, discharge at 0.5C, cycle 10 times, and test the battery for lithium analysis;

[0072] D) Charge at 1.8C at 30°C, discharge at 0.5C, cycle 10 times, and test the battery for lithium analysis;

[0073] According to the test results, it can be predicted that the safe charge and discharge times of the battery are about 2100 times;

[0074] Carry out deformation detection according to step (2), form the detection data into a battery defo...

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Abstract

The invention relates to a device and a method for detecting the safety of a lithium ion battery for an electric bicycle. The device comprises an anti-explosion box body 3, a base 2, a charging device 16, a discharging device 17, an ultrasonic probe 4, a heating device 15, a second temperature sensor 8, a camera 5, an air inlet hole 6, an air outlet hole 7, and the like, and can detect the safety parameters such as lithium analysis, deformation and ignition point. After the device and the method are used, multiple safety performance parameters of the battery are detected and evaluated at a time, so that not only is the technology blank of the safety performance detection of the lithium ion battery for the electric bicycle made up, but the detection efficiency is also effectively improved.

Description

technical field [0001] The invention belongs to the field of battery detection, and in particular relates to a lithium-ion battery safety detection device and method for electric bicycles. Background technique [0002] Lithium-ion batteries are considered to be the most superior rechargeable batteries, known as the "ultimate battery". Although the industrialization has only been for more than ten years, the huge demand for lithium-ion batteries in the market, as well as the large-scale investment in manpower, material and financial resources, have led the industry to gradually strengthen, making the application of lithium-ion batteries in electric bicycles possible. [0003] Lithium-ion batteries for electric bicycles are a newly developed and commercialized battery system in recent years. It has become an inevitable trend to replace lead-acid batteries as electric bicycle power. Lithium-ion power batteries have excellent characteristics such as high working voltage, small ...

Claims

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Application Information

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IPC IPC(8): G01N29/04G01R31/36H01M10/42H01M10/48
CPCG01N29/04G01R31/385G01R31/389H01M10/4285H01M10/48Y02E60/10
Inventor 于燕燕丁宇王晨光李涛
Owner TECHN CENT FOR SAFETY OF INDAL PRODS TIANJIN ENTRY EXIT INSPECTION QUARANTINE BUREAU
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