Interpretation of lithium ion battery new national standard

Lithium ion batteries in daily life are almost the same important as dishes. A meal cannot leave bowl and chopsticks, likewise, when you are holding a mobile phone giggling or wearing a headset intoxicated, all thanks to the lithium ion battery. But the problem is that the lithium ion battery and dishes have no country compulsive standard. Choosing and buying bowl and chopsticks is very simple, just clean, beautiful and smooth is fine. But lithium ion battery is different. Without a mandatory standard, it is very dangerous. If the accident is not severe, the equipment will be damaged; if the accident is severe, there will be human injury. In December 2014, "Safety Requirements for Lithium-ion Batteries and Battery Packs for Portable Electronic Products" (GB31241-2014) was finally released. At that time, the chaos of lithium ion battery industry finally ushered in the moment of reshuffle.

Invisible bombs around you

Is your lithium battery safe? You feel this is the normal product of normal manufacturer affirmation, the quality must be guaranteed. However, the reality is not necessarily. On March 15, 2013, the Zhejiang province administration for industry and commerce on the circulation field mobile phone quality monitoring results, Samsung, MOTOROLA, HTC, SONY Ericsson, Huawei, Zte, etc. 17 famous brands are classified as "unqualified products". Relevant personage says, this time a random sample of 36 batches in the mobile phone products, qualified for 9 batches, not qualified for 27 batch, percent of pass is only 25%, the overall quality is not optimistic.

The results showed that 20 out of 27 batches of substandard mobile phones failed to meet the standard of "battery thermal shock". Battery thermal shock is a national mandatory safety projects the cellular phone with ion battery total specification (GB/T18287-2000) in the test cell phone lithium battery safety performance. The project by placing the battery in high temperature test chamber rose to 150 ℃ + 2 ℃ and insulation for 30 minutes, If the battery is qualified, it will not explode, catch fire or leak liquid; Otherwise, it is unqualified product.

In daily life, the testing conditions seem a little harsh. At ordinary times, the high temperature of 150 ℃ cells carry even if it is to live, electronic equipment may also be ruined. But lithium battery is not only encounter high temperature just accident, to "lithium battery explosion" as a keyword search news, will be able to find more than ten thousand news. Eliminate abnormal means users (such as decomposition, short circuit, fire) caused by the explosion, mostly due to the lithium battery itself to be of poor quality, and even the source was an accident. In November 2014, MingYang battery technology co., LTD. in Yuquan Anke industrial park industrial area of Fenggang town, Dongguan, caught a fire killing five people 6 were injured in hospital. The fire cause is that the battery produced need to charge for the first time. At ordinary times, the first link and spontaneous combustion battery often occur. All of us are used to using a fire extinguisher as a quick solution. But this time, hundreds of has rechargeable batteries are stacked together, spontaneous combustion, and the fire will soon be out of control. However, can a battery product with many hidden dangers even in the production process be used with confidence?

Even the upstream production of qualified companies the battery does not guarantee 100% safety, or why are lithium batteries one of the air transport limited items? Even the digital industry's fashion bellwether apple is not immune, in recent years, iPhone lithium battery explosion news frequently seen in the media, no matter how manufacturers how to explain how to shirk responsibility, the fact is that your lithium battery quality or a problem.

Lithium battery another important position of mobile power supply is also a major disaster area. Mobile power brands are numerous, angels and demons coexist, not every manufacturer has the ability to produce the cell, and the best way is to find upstream cell manufacturers procurement. But any product cannot guarantee 100% qualified, upstream manufacturers are unqualified cell where? Many have been bought by "devils" to assemble mobile power supplies. Such copycat goods, from the root have the potential bomb.

Lithium battery industry is arguably, a mess of accident, many people focus on lithium battery is now shifting from the capacity to safety. Who has lobbied for the personage inside course of study: it's time to regulate the industry.

Lithium battery compulsory standards

In fact, there are many international and domestic standards for lithium battery safety requirements, such as the United Nations "dangerous goods transport test and standard manual" on lithium battery transport requirements (UN38.3), the domestic "mobile phone lithium-ion battery and battery pack general specification" (GB/ t18287-2013). But the regulations are neither not state-mandated (for example, UN38.3 applies only to transportation) nor the safety requirements for lithium-ion batteries are not comprehensive.

On December 5, 2014, China national standardization management committee number 27 announcement, approved the release of 234 national standards, which contains the dream of the portable electronic products with lithium-ion batteries and battery safety requirements "(GB31241-2014).The standard by the ministry of guidance, China electronics technology standardization institute of Shenzhen city Bak battery Co., LTD., Scud (FUJIAN) electronics co., LTD., and other related enterprises jointly draft is completed, will take effect on August 1, 2015.As can be seen from the standard code of GB, the standard for national mandatory standard. China quality certification center then revised the "portable electronic products used lithium-ion battery and battery pack safety certification specification" according to the standard from coc3306-2013 to gb31241-2014, and began to use the new version of the implementation rules and certification according to the standard, to accept the application for portable electronic products used lithium-ion battery and battery pack safety certification.

GB31241 new standard, lithium-ion batteries and battery packs that meet the "predetermined portable electronic products not exceeding 18kg that can be carried by users on a regular basis" shall comply with the mandatory requirements set forth in the standard. Standard for portable electronic products including portable office products such as notebook computer, PDA, etc.; Mobile communication products such as mobile phone, cordless phones, blue tooth headset, intercom, etc.; Portable audio and video products such as portable TV, portable DVD players, MP3 / MP4 player, camera, camera, voice recorder, etc.; Other portable products such as electronic navigators, digital photo frame, games, e-books, etc. Standard emphasized, of course, "The portable electronic products listed above do not include all the products, so the products not listed are not necessarily outside the scope of this standard ": that is, lithium batteries used in future wearable electronic products may also need to meet the requirements of this standard. The standard also states that "there may be additional requirements for lithium-ion batteries or battery packs for portable electronic products used in specific applications such as vehicles, ships and aircraft as well as in special fields such as medical, mining and undersea operations". This means that the safety of lithium electronic products used in these fields will be further improved.

Lithium battery new rules

This new portable electronic products with lithium-ion batteries and battery packs and safety certification rules a country compulsive standard GB31241, a combination of several battery standards at home and abroad (such as UL, UN, IEC, etc.) in the mature security test project, in addition to thermal shock, external short circuit, the battery falls, charging test project for the modification, such as adding the protection circuit and identifies the durability requirements, especially for the battery protection circuit is also put forward the corresponding security requirements and the specific test method.

The new standard tests lithium-ion batteries for no-dead angle coverage, but also very demanding. We found that the battery test project contains not only standard of general safety requirements (safety working parameters, identify requirements, the warning message, durability), specifically proposed to the battery environment test, battery safety test, battery protection circuit safety tests, system protection circuit safety requirements and so on more than 30 test. It should be said that this is for portable lithium-ion battery at home and abroad the most comprehensive - safety standards. It also makes the early standards promulgated by the industry's great attention. So that the new standards would lead to lithium electronic research and development, is the production of more difficult? MC reporter learned from the relevant testing institutions that the technical requirements of the new standard should not have a great impact on the upstream cell manufacturers, because the test index is not too different from the current UL and IEC standards, the product index can basically meet. But still need to carefully check the requirements of the standards, such as section 5.3 "logo and the warning message" this part has a direct influence on product, the quality of your battery may be various aspects are qualified, but with no identified by the requirement, after the new standards may also be investigated.(Text signage is really important and can be a bit of a hassle for manufacturers. Foreign have "this electric iron should not regard as heater" wait for weak-minded explanation is not weak-minded actually, you can refer to the case of McDonald's sued for coffee scalding an American woman.).

In addition, the relevant inspection agencies, said the lithium battery in the future may be incorporated into the scope of compulsory certification, similar to the power supply has a separate 3C authentication. By the certification and accreditation administration, ministry of industry, quality supervision, inspection and quarantine compulsory certification is concerned, the battery is studying the implementation of the compulsory certification transition. But the mandatory certification will not be available until August 1.

For formal upstream manufacturers, it is good news. They have the strength to meet the requirements of the new national standard battery products. And the devil will eventually become visible, so as to change the current bad money expulsion of good money dilemma.

Of course, the early stage may be a little painful because the unqualified products have no sales, downstream fake manufacturers are blocked by the new standards in the industry, so they can only destroy their own. Otherwise, they may face punishment. But this is only a "pain of growth", in the long run, and the industry will get healthy development.

So, from the point of new national standard of lithium-ion batteries, for enterprise: it does not have a great impact on the formal large-scale lithium electric production enterprises, because these large enterprises themselves use a strict production process; For some small workshops, there is no standardized production equipment for small enterprises, lithium battery will play a strict limit on the release of the new national standard. For our consumers, lithium battery of new national standard, will greatly enhance the safety of the lithium electricity products. Such as improving the encapsulation of lithium battery tightness and other aspects, it can effectively play a role in protecting the personal and property safety of consumers within a certain range.

Before the new standards were introduced, there was a misconception that they would also regulate fake mobile power supplies and fragmented lithium-ion batteries for cars. But ministry of lithium-ion battery safety standards task force of experts have made it clear that ""GB31241 is a lithium-ion battery safety standard, not a mobile power standard, cannot be regarded as a mobile power standard." This is because the mobile power supply belongs to a product with independent functions, which can be sold and used independently and belongs to a complete machine equipment. A parts and batteries is the machine equipment or components.GB31241 is a component standard, not a complete machine standard.

According to related explanation, the safety assessment of mobile power supply should use the standard Gb4943.1-2011 or GB8898. Gb4943.1-2011 is "information technology equipment safety - part 1: general requirements", Gb8898-2011 is "audio, video and similar electronic equipment safety requirements". The requirements of the two, which standard depends on the specific use mobile power to what kind of power supply equipment.GB4943.1-2011 GB8898 and request the equipment safety key-module satisfy the corresponding components safety standard requirements. Lithium-ion battery is a mobile power supply security key-module (belong to the whole equipment), therefore GB31241 released after implementation, mobile power supply in addition to the lithium-ion battery must meet the requirements of GB31241 outside, the rest of the security requirements needed to use GB4943.1 or GB8898 to assess. Because mobile power as a whole machine equipment, safety does not only depend on a standard GB31241 components can be covered.

It has been revealed that In the content of the national standard for mobile power supply "general specification for mobile power supply for information technology portable digital equipment" which has been issued for making plans, the safety of the whole machine and equipment (GB4943.1/GB8898) and lithium-ion battery (GB31241) will be comprehensively considered for the safety of mobile power supply.

The same goes for car batteries. Previously, anecdotal reports that power battery monomer battery national standard has been completed, and submitted to the national standards committee. The news quickly rejected by people in the industry. At present, only the high power application and high energy application part of the national standard of lithium-ion power battery for electric vehicles has been completed, and is in the stage of public display and opinion solicitation.

The misunderstanding actually reflects the urgent demand of the industry for the national standard of mobile power supply and automobile power battery.

The personage inside course of study view

For lithium battery new national standard "portable electronic products with lithium-ion battery and battery pack safety certification specifications" issued, what does it effect? In this regard, MC reporter also interviewed the domestic lithium battery production enterprise -- Shenzhen DIBIKE electronic technology co., LTD. Quality director Wen-ping Liu, to see how the industry professionals view this new national standard of lithium-ion battery.

MC: we have noticed that the new national standard for the safety certification of lithium-ion batteries and battery packs for portable electronic products is not issued solely for mobile power sources, but for lithium-ion batteries and battery packs. In your opinion, will this have any impact on mobile power products? What are they?

Wen-ping Liu: "the portable electronic products with lithium-ion batteries and battery packs and safety certification rules GB31241-2014" is domestic first for portable electronic products with lithium-ion batteries and battery safety project, does not contain the performance requirements. Its not just cover the mobile power supply, as long as it belongs to the portable electronic products used in lithium-ion batteries are applicable. This standard emphasizes the safety standard, lithium-ion battery as key components of mobile power supply, the requirement for mobile power supply whether it is currently in the national standards and local standards are directly used in Guangdong province. The implementation of this standard will directly promote domestic and foreign lithium ion battery manufacturers to meet the mandatory standard requirements, standardize the safety requirements of the battery industry at the same time indirectly change the current mobile power supply in many battery safety problems. The national standard on the low end of the battery and mobile power supply enterprises will be a fatal blow. This standard in addition to the standard hardness testing standards also for battery factory from designing to product manufacturing process must get through relevant certification. Non-standard factories cannot be certified, and once the upstream users do not agree, it will directly lead to the loss of market demand for low-end batteries and eventually meet the requirements of the standard market.

MC: What standards did your company adopt before the release of the national standard for lithium ion batteries? What are the differences between the new national standard and the previous standard?

Wen-ping Liu: Before the release of the national standard, our company adopted the comprehensive requirements of "IEC62133", "ULl642" and "UL2054". The release of the new national standard is the first safety standard for lithium ion batteries in China.

Difference 1: Host devices specified in "IEC62133" are the common requirements of portable devices. "GB31241" is aimed at portable electronic products, and the host requirements are more detailed.

Difference 2: "IEC62133" provisions of the different types of alkaline batteries (lithium-ion battery, nickel metal hydride batteries, nickel-cadmium batteries, etc.) of the basic general requirements; GB31241 standard object only lithium-ion battery, on the basis of using "IEC62133" requirements, adding special requirements for factory inspection and product design process.

MC: For a battery manufacturer, the release of the new national standard on lithium-ion battery, compared with the previous, how will the company's battery production? For example, will there be any increase in production, testing and cost?

Wen-ping liu: The release of a new standard has a two-sided relationship with battery manufacturers. First, it is good news for enterprises that take the product quality route, and a fatal blow for enterprises that produce low-end products. The cost of meeting the requirements of the whole project of national standard safety will increase somewhat, but it is not a little bit for low-end enterprises. The rising curve of cost will be quite large, which is bound to lead to the disappearance of low-cost sales advantage. The new national standard has little change in the production cost of the enterprise. The product testing link has little change in the production process of the enterprise, but the cost of test and certification will increase. At present, there are differences in understanding of the division of test units, which will also lead to the results of different test costs.

MC: In your opinion, will the release of this new national standard on lithium-ion battery play a certain role in regulating and promoting the whole industry?

Wen-ping liu: The release of new lithium-ion batteries and battery packs will certainly play a normative role in promoting battery safety, but the performance and comprehensive technical requirements are not within the scope of this standard. So in addition to safety, its comprehensive technical requirements need to be gradually standardized gradually promote the benign development of China's battery industry.

An industry to develop, there is no standard must be a mess. The chaos in the lithium battery industry was caused by the lack of discipline and lack of discipline in the market. The introduction of "safety requirements for lithium ion batteries and battery packs for portable electronic products" (GB31241-2014) will greatly improve the safety threshold of lithium-ion battery manufacturing and standardize the market order. Some fake products and substandard brands will be shuffled out. Of course, new standards don't solve all problems. To develop an industry, in addition to industry regulations and standards, enterprises should also be self-disciplined.

As users, we also need to pay attention to the test cost of the new national standard. After all, the test cost will ultimately be shared among consumers. In addition, we are more concerned about the implementation of the national standard for mobile power. According to the notice issued by the National Committee of Information Technology Standardization on the convening of the "General Specification for Mobile Power Supply for Information Technology Portable Digital Devices" national standard launch meeting. The meeting has been held at the beginning of this year, I believe that the national standard for mobile power will be released soon.

The page contains the contents of the machine translation.