Lithium battery nonconforming product management

【 abstract 】 nonconforming product management is an important work of quality management and control, based on the analysis lithium battery problems existing in the enterprise management and control of non-conforming product, the management of the nonconforming product from institutions to set up, and perfect system

【 key words 】 manufacturing; nonconforming product; quality management; corrective action

0 the introduction

The causes of quality fluctuation are 6: man, machine, material, method, ring, measuring, namely 5 m1e.lithiumThe battery manufacturing industry under the influence of 5 m1e factors, will inevitably in raw materials procurement, battery production process, factory inspection unqualified products. Unqualified refers to "is not in conformity with the relevant quality standards and provisions of the contract to the requirements of the product's applicability, safety and other properties [1], this is the definition of generalized, narrow sense of nonconforming product is refers to the enterprise produces the product does not meet the requirements of the product. In order to strengthen the management of non-conforming product, on the one hand, can reduce the production cost, improve the economic benefits of enterprises; On the other hand, to ensure the quality of products, achieve good social benefit is also plays an important role. The quality of products as a new energy lithium battery industry survival guarantee, is the enterprise the root of the living, which requires the enterprise pays great attention to product quality, focus on quality management and control. Nonconforming product management and control as an important work of quality management and control of the content, the implementation of all work carried out a comprehensive, scientific, effectiveness is particularly important.

Lithium battery as a kind of new energy products, has a light weight, high energy, long cycle life, low self-discharge rate, wide range of work allowed, good low temperature performance, no memory effect, no pollution and other advantages, but at the same time has a complicated manufacturing process, production environment and storage conditions demand is high, not easy storage and other shortcomings. It is in the process of lithium-ion battery production nonconforming management put forward higher requirements, if mishandled, could cause great economic losses, increase the production cost, reduce the quality of the product.

The purpose of this paper is to combine the lithium battery production management characteristics, analysis of such nonconforming product in the process of enterprise production management and control problems, from institutional establishment, system perfect, management as well as fine nonconforming management Suggestions, hope nonconforming product management of the enterprise is of certain reference and guidance significance.

1 lithium battery problems in enterprise management and control of non-conforming product

According to ISO9001:2008 in the provisions of article 8.3: the organization shall ensure that product which does not conform to product requirements is identified and controlled, in order to prevent the unintended use or delivery. Nonconforming product control and disposal of non-conforming product related responsibilities and authorities should make a provision in a documented procedure [2].

Due to system standard in the nonconforming control requirements of understanding is not deep, cause the lithium battery enterprise management loopholes, the unqualified material nonconforming product is unable to correctly implement comprehensive management, mainly has the following several ways:

1.1 nonconforming handling process is not rigorous

Part of lithium battery companies after the nonconforming product is found to be able to timely and effectively to the nonconforming product isolation, identification, recording, cognizance and disposal, but for the nonconforming report to fill in is not enough, often in the unqualified phenomenon description, cause analysis, corrective action pertinence is not strong, lead to corrective action is invalid, similar to the unqualified phenomenon occurred in succession.

1.2 for the happening of the unqualified phenomenon overall control

Part of lithium battery companies, in the process of production of nonconforming individuals more seriously, once discovered immediately take corresponding measures, and the measures are effective, but for a period of time do not make the overall analysis of the phenomenon of occurrence of unqualified, cause cannot be based on overall analysis to find the unqualified reason, cannot be achieved by the later inspection to prevention and control to improve the quality of the product.

1.3 Unqualified trial system management is not perfect

Nonconforming product trial results are as follows: scrap, rework, repair, concession receiving, degrade, and returned to the supplier, some lithium battery enterprises only pay attention to the process of nonconforming product, but ignore the management of the nonconforming product trial system, the trial staff training, daily supervision and inspection does not reach the designated position, cause nonconforming trial personnel is not strong, professional trial knowledge cannot be updated in a timely manner, appear, such as: trial opinion cannot execute, misjudgment trial jurisdiction, not hearing the nonconforming optional change jobs.

Only strengthen the nonconforming product management, to ensure that meet the requirements of system standard, the control of non-conforming product that will require lithium-ion battery production enterprises, in the product design, development, production and service process, continuously improve product quality, strict control of non-conforming product, so as to speed up the production progress, improve the production efficiency, reduce production costs.

2 lithium batteries nonconforming management Suggestions

2.1 to perfect the institutions, system formation, nonconforming product processing are laws

Every production of a product, need to design, process, process of manufacture and inspection, and many other steps, under the influence of 5 m1e factors, each link inevitably produces nonconforming product, for the timely detection and control of nonconforming product, and prevent the unintended use of nonconforming product, avoid shuffle, avoid responsibility, and so on and so forth, scientifically deal with nonconforming product, we must establish a nonconforming trial institutions and regulations. Enterprises should set up nonconforming trial committee, nonconforming product trial committee by the design, technology, production, quality departments such as representatives and set up offices, enterprise competent deputy general manager/chief engineer for the committee director. Perfecting the nonconforming product control procedure, make the nonconforming product processing are laws. The nonconforming product trial institutions as a platform, based on the rules and regulations, based on the specification, system management, ensure that nonconforming product management orderly.

2.2 analyze the nonconforming and evaluation

Is not satisfy the so-called nonconforming, express, usually implied or must fulfill the requirements or the desired product. Nonconforming product is usually in the following cases: (1) the inspectors according to process documents, drawings, standards, to determine product;(2) according to the demands of customers to determine the after delivery of products;(3) the national functional departments according to laws and regulations to determine product. Shows, the extension of nonconforming product is great, if the time in order to eliminate all nonconforming without judgment, it is not the practice of science, because each nonconforming product cost of raw material, manpower and energy. This requires a nonconforming trial researchers analyze the nonconforming and evaluation. During the processing of non-conforming product rework, repair, concession receiving, degrade, scrap and return the supplier several trial personnel should be according to the nonconforming product types and the specific situation to make reasonable decision, able to rework, rework the for can meet the expected requirement, concessions to receive or demotion, as far as possible to reduce scrap, such ability will cost to a minimum. Handling of non-conforming product, of course, to grasp the scale, does not meet the requirements of products, to seriously, otherwise to relax the requirement for producers, will cause more nonconforming, reduce product quality; For products cannot meet the requirement of the use, must be discarded, otherwise it will cause serious consequences [2-3].

2.3 improve nonconforming trial personnel quality, perfect the evaluation system

With the increasing of enterprise product model, different material and process, which requires the nonconforming trial personnel with more high quality, not only should have the independent analysis question ability; Accurate positioning problem ability; Ability to effectively solve the problems, but also be familiar with related knowledge, design, technology and processing of the more modern quality management methods. Regularly for nonconforming product trial personnel training, to invite related personnel to design, process and production department discuss, increases the chances of communication, and constantly improve the professional quality of the trial personnel, ensure the trial process to prevent nonconforming unintended use, cost saving.

2.4 analyze nonconforming raw data in the process and effective utilization

Data is the basis of decision-making, also be the basis of continuous improvement, only by establishing a mechanism for regular collection and statistics, and careful analysis, data analysis is used to implement improvement, to improve the quality of the product. Want to effectively prevent nonconforming product, you need on the basis of the existing defects, from human, machine, material, method, ring five aspects to analyze the causes of unqualified, namely, human factors, equipment factors, raw materials, process and guidance method, production environment.

From the author in 2013, the company causes of nonconforming product statistics, unqualified caused by human factors accounted for 60%, equipment factors accounted for 20%, other 20%, different causes of nonconforming product has a different approach, therefore, to summarize the causes of unqualified phenomenon and the thorough analysis, to eliminate the causes of unqualified and provide evidence for potential causes, develop a reasonable and effective corrective measures, radically reduce the number of nonconforming product.

3 Summary

Nonconforming product management as an important work of quality management and control must be conducted from each link control, formation of putting prevention in the management system, and cannot violate the ISO9001 quality management system management concept. Only after the inspection, can reduce the number of nonconforming unintended use, not from the source to reduce the occurrence of nonconforming, only to understand the whole process of product design and production, will be after the inspection to beforehand control, can reduce and eliminate the unqualified products, improve the overall quality, reduce production costs.

"Reference"

[1] Tang Qiguang Sun Jiafeng. Product defects, product defects and the product is unqualified legal analysis [J]. Journal of politics and law, 2001,01.

The page contains the contents of the machine translation.