Detecting method of charger connector safety

Abstract

The present invention relates to a safety detection method of charger adapter, and is used for determining that the adapter used for making mutual connection between charger and secondary cell is reacted to change standard or not. Said invention provides the concrete steps of said detection method by using charger, charger adapter and secondary cell and adopting comparison method of instantaneous impedance of adapter and internal reference impedance of the charger. Said invention can prolong the service life of secondary cell.

Description

technical field [0001] The invention relates to a safety detection method for a charger connector, which mainly detects the impedance of an adapter used for charging a secondary battery, and judges whether the adapter should be updated or reconnected based on the impedance. Background technique [0002] After entering the 21st century, human beings are actively developing energy-saving and low-pollution pure electric vehicles (EV) / compound electric vehicles due to the increasing shortage of oil resources on the one hand and on the other hand in order to reduce environmental pollution caused by gasoline vehicles. (HEV). [0003] Currently, the technical bottlenecks of pure electric vehicles (EV) or hybrid electric vehicles (HEV) lie in batteries, motors, and control systems, and the main key lies in batteries. Although electric vehicles can improve the environmental pollution problem, although the power consumption of secondary batteries of different manufacturers is differe...

AI Technical Summary

Problems solved by technology

[0004] Therefore, every time it needs to be charged once, the socketing and unplugging actions of the input connector 22 and the output connector 16 just need to be performed once. In terms of the charging times of the general secondary battery 20, it is calculated as once a day. The input connector 22 and the output connector 16 are socketed and pulled out more than 700 times. Therefore, it is easy to cause poor and loose conduction between the conductive terminal 161 and the socket groove 221, and even the conductive terminal 161 will be damaged or damaged. broken

In addition, the charging current of the general secondary battery 20 is not small, and the impedance of the joint between the conductive terminal 161 and the socket groove 221 is originally high, so that after the charging is completed, it will be caused by the thermal effect of the current (the lead wire will generate a large amount of heat per unit time). heat) P=I2R (P: power, I: electric current, R: wire resistance) and cause the temperature of the input connector 22 and the output connector 16 made of metal materials to be higher

[0005] Therefore, because the temperature of the input connector 22 and the output connector 16 is high, the general user will pull the input wire 21 and the output connector 16 wrapped with plastic material when they need to pull out the input connector 22 and the output connector 16 after charging. Output line 15, so that the output connector 16 is pulled out of the input connector 22, but this will aggravate the damage or breakage of the conductive terminal 161 and the socket groove 221, so that the impedance here becomes larger

The thermal effect of the current during charging or after charging makes the power here increase and generate high temperature, which will cause the surrounding combustibles to be ignited and cause a fire

It may also be because the impedance here becomes larger so that the entire charging voltage becomes larger, which makes the electrolyte in the secondary battery 20 easy to decompose, resulting in deterioration of battery characteristics and durability, and seriously damages the rechargeability and storage capacity of the secondary battery 20. , thereby reducing the rechargeable times of the secondary battery 20 and shortening its service life

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