Fujian Golden Dragon Rare-earth Co., Ltd.

Hithium Tech Hk Limited

Yuyuan Wu

Yanliang Wang

Jinchi Lin

Wentao Xiao

Long Zhou

Zhizhi Wang

Xichong Zhang

Provided are a manufacturing method of a core assembly for battery, a core assembly for battery, and a battery pack including the core assembly. The method includes; providing a jelly-roll including a cylindrical main body and a tab group including tabs stacked in an axial direction of the main body and electrically connected to an axial end of the main body, each tab extending outward in a radial direction of the main body; providing a current collecting member including a current collecting portion; electrically connecting the current collecting portion to at least one of the tabs so that the current collecting portion extends outward in the radial direction; and bending the current collecting portion and at least one part of the tabs inward in the radial direction so that no current collecting portion or tab extends beyond an outer peripheral surface of the main body in the radial direction.

Manufacturing method of core assembly for battery, core assembly for battery, and battery pack

The present invention provides an N,N-dihydrocarbyl amide carboxylic acid, preparation method therefor and use thereof. The N,N-dihydrocarbyl amide carboxylic acid can be used as an extractant for enriching rare earth elements from raw materials containing low-concentration rare earth elements, separating and purifying yttrium element from mixed rare earth raw material, and separating elements such as aluminum, iron, radioactive thorium, radioactive uranium and actinide from mixed rare earth raw material, etc. The compound can be synthesized in a simple and cost-efficient way. As an extractant, it has good chemical stability and can withstand strong acid and strong alkali without decomposition.

N,N-dihydrocarbonylamide carboxylic acid, preparation method therefor and use thereof

The present application provides an N,N-dihydrocarbonyl amino carboxylic acid, preparation method therefor and use thereof. The N,N-dihydrocarbonyl amino carboxylic acid can be used as an extractant for enriching rare earth elements from raw materials containing low-concentration rare earth elements, separating and purifying yttrium element from a mixed rare earth raw material, and separating elements such as aluminum, iron, radioactive thorium, radioactive uranium and actinide from a mixed rare earth raw material, etc. The compound can be synthesized in a simple and cost-efficient way. As an extractant, it has good chemical stability and has good resistance against strong acid and strong alkali without decomposition.

N,N-dihydrocarbonyl amino carboxylic acid, preparation method therefor and use thereof

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Fujian, China

Yuyuan Wu