January 22, 2024，China Construction Machinery Industry Association organized Yijiatong Battery to complete“High power and high safety“Short knife”Key Technology and Application of Power Lithium Ion Battery for Special Industrial Vehicle”Appraisal meeting of scientific and technological achievements of the project。

China Construction Machinery Industry Association、Chang'an University、Wenzhou University、China Machinery Science Research Institute Group Co., Ltd.、The appraisal committee composed of authoritative experts from the National Construction Machinery Quality Inspection and Testing Center and other units attended the appraisal.。Zhou Liping, Vice President of Yijiatong Battery，Zhang Shusen, Chief Engineer and President, participated in and attended the appraisal meeting.。

Experts inspected the production site of the product.，Having listened to the report on the scientific and technological achievements of the enterprise，The relevant information was reviewed，After questioning and discussion，It was agreed that the project was innovative.，The overall technology has reached the international advanced level.，Agree to pass the appraisal of scientific and technological achievements。

Yijiatong Battery insists on technological innovation for a long time.，Insist on product innovation，Provide security for customers、Reliable new energy solutions。Yijiatong battery has been used in new energy industrial vehicles.、Ship、Energy storage and construction machinery and other sub-tracks have made outstanding achievements. 。

Expert opinion

China Construction Machinery Industry Association organized a meeting in Xuancheng City, Anhui Province, completed by Anhui Yijiatong Battery Co., Ltd.“‘Short knife’Key Technology and Application of Power Lithium Ion Battery for Special Industrial Vehicle”Appraisal meeting of scientific and technological achievements。The appraisal committee heard the report of the completion unit.，The product and production site were inspected.，Reviewed relevant technical information，Upon inquiry and discussion，The appraisal opinions are as follows::

1.Complete identification data provided、 Standard ，Meet the identification requirements。

2.The main achievements and innovations of the project are as follows::

1)Invention of conductive carbon black bridged by conductive small molecules、Carbon nanotubes、Graphene/Lithium iron phosphate composite anode technology，Build point、Line、Urface three-dimensional continuous heat conduction、Conductive path，Olves the problem of unstable structure caused by heat accumulation inside the battery in the charging and discharging process of the battery.，And the safety of the system is improved.。

2)Negative pressure formation technology was invented.，Improving formation interface of lithium ion battery。An all-tab structure was developed，Short knife design with unique two-end pole，Make the temperature distribution more uniform，And that high-power char and discharging capability is improve.。

3)An integrated battery system without modules has been developed.，Increase the energy density，And that heat dissipation performance is improve，The service life of the battery is prolonged.。

3.The products have been tested by Weikai Testing Technology Co., Ltd.，The tested indicators meet the requirements of relevant standards.。Used by the user，The response is good，Remarkable economic and social benefits。

The appraisal committee believes that，The project is highly innovative.，The technical difficulty is great，With independent intellectual property rights，The overall technical performance indicators have reached the international advanced level.，Agree to pass the appraisal。