Quality control of the battery Pogo pin contact
Quality control of the battery Pogo pin contact
First, the design quality of the battery
Pogo pin contact needle connector means that the design of the battery contact needle connector can achieve the design goal.But the establishment of the design goal is not an easy process, there is also a design goal of quality problem, the accurate design goal (or good quality design goals) require customers vigorously support, try to participate in, the supplier repeatedly communicate with customers, both sides have reached a consensus, completely clear to express design goals, completely consistent understanding of the design goal, even if other work related to the customer do it more perfect, customers may not very satisfied, this is the first step in the link of quality management, is also the premise.
We may have such experience: the customer does not complain about the product, but is not satisfied with the product. The reason is that although the product meets the requirements of the design goal, and the design goal is also recognized by the customer, the design goal cannot well realize the function of the product, so the customer does not complain, but is not satisfied with the function of the product.For example, the customer requires the development of a connector, one of which has the design goal that RF leakage is no more than -60dB, and the test results of the designed battery contact needle connector also show that the design goal is met. However, the customer found that even if the leakage is less than -60dB, the connector still has a significant impact on a component around it.Although the customer did not complain, he was not satisfied with the connector.Now assume that the design goal has been fully reached consensus, one of the design goals requirements is the battery contact pin connector plug life is not less than 10,000 times, pull out force is not less than 200 grams.According to the customer request, the battery contact pin connector design engineers with C5240 material needed for the designed a shrapnel, according to the analysis of the shrapnel in the state of work should be put 900 mpa, reasonable design requirements with SH hardness C5240, caused by a lack of experience, the engineer has chosen the H hardness C5240, the results of samples after 8000 times life, output is less than 200 grams, pull the battery contact pin connector shrapnel could not reach the requirements of the design goal.This situation is that the design of battery contact needle connector fails to achieve the design goal, and it is the design quality problem of battery contact needle connector.For another example, the customer's requirements for a certain type of battery contact needle connector are: 5 years of life, contact resistance 10mOhm (maximum).The supplier's corresponding design scheme is 80 grams of positive force and 2 microns of silver plating.When the customer did incoming material inspection, the product could meet the requirement of 20mOhm (maximum) contact resistance. After 3 years, the customer noticed that the contact resistance of the battery contact connector was defective. After inspection of contact resistance, it was found that the contact resistance of part of the battery contact connector was greater than 200mOhm!The supplier searched the electroplating design standard of the battery contact needle connector afterwards and found that the positive force should be more than 200g to ensure the contact resistance is less than 10mOhm, and the internal test data also confirmed the theory.The design scheme cannot meet the requirements of corresponding design objectives.This is also an example of the battery contact pin connector design failing to meet its design objectives.
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