Kaifeng Measurement and Control This year, the lithium battery industry sold 50 % to develop Ultra-soft X-ray diaphragm density online measuring instrument

On April 25th, the "New Age New Energy New Blue Sea -- '2018 China Lithium-electric New Energy Industry Chain Research" kicked off in Henan.

Lithium-electric "Davos" Forum/Battery 100 People's Assembly Secretary General and Founder / Chairman of Battery Network Yuqingjiao said, The survey was conducted by the Zhongguancun New Battery Technology Innovation Alliance, the Battery 100 People's Meeting(Micro number: CBHA100), the Lithium Power "Davos" Organizing Committee, Battery Network(Micro number: my battery), and I Love Tram Network(Micro number: xevcar). This research activity is supported by big group laser technology industry group limited company. The purpose of the activity is to conduct system research on industrial chain enterprises such as lithium batteries and materials, new energy vehicles, energy storage, and lithium-related equipment in Henan Province in 2018, to thoroughly understand the industrial layout and future development direction of enterprises, and to propose the status quo of enterprises and existing problems. Resource integration, capital docking, and other recommendations; Promote the promotion of the brand image of research enterprises(listed companies) and the promotion of product cooperation between enterprises and enterprises; Through research reports and data analysis. Restore industry truth, feedback industry voice, report typical cases, spread positive energy.

On the morning of the 25th, the research team and its party came to Kaifeng City Measurement and Control Technology Co., Ltd.(abbreviation: "Kaifeng Measurement and Control"), visited the company's production line, testing center, etc., and conducted exchanges with general manager Gexuehai and deputy general manager Liujunfeng., discussion.

Kaifeng Measurement and Control were established in 1992. It has 26 years of experience in the development, on-site application, and service of thespecial instrument and instrument products. It has the qualifications for the sale and use of radioactive sources and Ray devices. The company has a radioactive source library and is a high-tech enterprise and a dual-soft enterprise. The products in the field of new energy lithium batteries are mainly X-ray positive film coating density measuring instrument, β-ray negative film coating surface density measuring instrument, Ultra-soft X-ray diaphragm coating thickness measuring instrument and other products. At present, an on-line measuring instrument for the density of Ultra-soft X-ray diaphragm surface and an online measuring instrument for the density of micro-spot Ray surface has been successfully developed. This measuring instrument has achieved a minimum measurement of light spot 6X6mm in the industry.

According to Gexuehai, in 2017 Kaifeng Measurement and Control performed better in the lithium battery industry, with sales accounting for 25 %, up from 10 % in 2016, and is expected to reach 50 % in 2018. At present, the main customers are BYD, Guoneng, Penghui, Lithium-Wei, KNU Weida, Xintaihang, Mike and other mainstream lithium batteries.

Gexuehai said that Kaifeng Measurement and Control X-ray surface density measuring instrument uses micro-focus, small spot, long tunnel alignment X-ray source; Double closed loop intelligent tube voltage tube current control technology; It has the function of measuring air temperature, humidity, air pressure and monitoring gas density in real time. The unique ultra-thin window, high efficiency, fast reaction-ionization chamberspecial detector, achieved a high level of design balance between reaction speed, measurement accuracy, and sensitivity; The long-term high stability of lithium battery electrode and isolation membrane density measurement was realized. Accurate measurement of surface density and head and tail profile of the thin area of the polar film is realized. Through the excellent closed-loop control algorithm, the uniform and consistent automatic control of transverse surface density and longitudinal surface density can be realized. Through multiple synchronous measurements, the net coating density data of positive and negative coating can be controlled in real time, thus greatly improving the practicality of the system. In addition, Kaifeng Measurement and Control Technology Co., Ltd. has a professional and efficient R&D and technical service team. Its products soon received high-end users in China and have now been recognized by ATL, BYD, and many related manufacturers.

In the past period of time, there have been some explosions and fire accidents in lithium batteries at home and abroad. The large-scale recall of related products has sounded the alarm bell for the lithium power industry. Gexuehai believes that from the perspective of the testing industry, the production process measurement and control of domestic power batteries still There are many places that must be perfected. In particular, the positive electrode, negative electrode, and diaphragm coating must be equipped with a high-precision and high-performance surface density measuring instrument. The production process must be detected and controlled in real time to ensure the quality and safety of the battery.

According to Gexuehai, at present, the product standard of the domestic surface density measuring instrument mainly uses the GB/T15636 -2008 ionizing radiation thickness meter standard, which is basically the same as the British standard BSIEC 61336:1996. Several large domestic lithium manufacturers also cited some foreign data quality management systems, such as the 6σ management evaluation system, the MSA measurement, and analysis system, and % P/T, CPK, GR& R, SPC, and other evaluation methods. Led and driven by the manufacturers of testing equipment, the gap with developed countries will soon be reduced.

With the development of imported and domestic coating machines, relevant measuring instruments such as surface density measuring instruments must also adept at the same time. Kaifeng has made sufficient technical reserves. Gexuehai revealed that the company's width(1500mm), high-speed scanning(1m/s), high precision(2σ: ± 0.1 ‰), and small spot(5mm × 5mm) surface density measuring instrument have passed the relevant tests and will soon be put into the market; The special equipment for measuring the thin zone at the end of the polar film has also been developed based on the microsecond response time of the high-speed soft X-ray detector, and on-site tests have been conducted at the lithium battery production plant. It is expected to be put on the market in the near future.

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