阅读说明：本技术 一种手持式钠离子纽扣半电池钠片加工装置 (Hand-held type sodium ion button half cell sodium piece processingequipment ) 是由 杨书廷 马梦月 刘文凤 荆汝壹 董红玉 于 2020-07-01 设计创作，主要内容包括：本发明公开了一种手持式钠离子纽扣半电池钠片加工装置,包括聚四氟乙烯刮刀、夹持机构和中心圆柱模具,其中聚四氟乙烯刮刀用于刮掉钠块表面的氧化层同时将钠块分切成小块,夹持机构由带有手柄的一体式上压板、带有定位孔和手柄的一体式下压板及连接一体式上压板和一体式下压板的合页构成,中心圆柱模具与一体式下压板的定位孔相配且中心圆柱模具内嵌于一体式下压板的定位孔内,中心圆柱模具的高度小于一体式下压板的定位孔高度。本发明结构简单,操作简便,且材质使用寿命长,不易变形,不仅能够提高操作效率,而且能够提高钠片规格的一致性,便于各种正/负极材料储钠性能的研究。(The invention discloses a handheld sodium ion button half-cell sodium piece processing device which comprises a polytetrafluoroethylene scraper, a clamping mechanism and a central cylindrical die, wherein the polytetrafluoroethylene scraper is used for scraping an oxide layer on the surface of a sodium piece and simultaneously cutting the sodium piece into small pieces, the clamping mechanism is composed of an integrated upper pressing plate with a handle, an integrated lower pressing plate with a positioning hole and the handle and a hinge for connecting the integrated upper pressing plate and the integrated lower pressing plate, the central cylindrical die is matched with the positioning hole of the integrated lower pressing plate, the central cylindrical die is embedded in the positioning hole of the integrated lower pressing plate, and the height of the central cylindrical die is smaller than that of the positioning hole of the integrated lower pressing plate. The invention has simple structure, simple and convenient operation, long service life of the material, difficult deformation, improved operation efficiency, improved consistency of sodium sheet specification and convenient research on sodium storage performance of various anode/cathode materials.)

1. The utility model provides a hand-held type sodium ion button half cell sodium piece processingequipment, its characterized in that includes the polytetrafluoroethylene scraper, fixture and center cylinder mould, wherein the polytetrafluoroethylene scraper is used for scraping off the oxide layer on sodium piece surface and is cut into the fritter with the sodium piece branch simultaneously, fixture is by the integral type top board that has the handle, the integral type holding down plate that has locating hole and handle and the hinge of connecting integral type top board and integral type holding down plate constitute, center cylinder mould matches and the center cylinder mould is embedded in the locating hole of integral type holding down plate with the locating hole of integral type holding down plate, the height that highly is less than the locating hole height of integral type holding down plate of center cylinder mould.

2. The hand-held sodium ion button half-cell sodium piece processing device of claim 1, characterized in that: by designing the length, width and height of the integrated lower pressing plate and the number of the positioning holes, a plurality of metal sodium sheets can be manufactured at one time; the diameter of a processed sodium sheet can be controlled by designing the diameter of an integrated lower pressing plate positioning hole and a central cylindrical die, wherein the central cylindrical die is a solid cylinder, and the outer diameter of the central cylindrical die is consistent with the inner diameter of the positioning hole; the thickness of the processed sodium sheet can be controlled by designing the height difference between the central cylindrical die and the integrated lower pressing plate.

3. The use method of the hand-held sodium ion button half-cell sodium piece processing device as claimed in claim 1 or 2 is characterized by comprising the following specific steps:

(1) the length, width and height of the integrated lower pressing plate of the sodium sheet processing device are 100 mm, 100 mm and 30 mm, the inner diameter of the positioning hole is 15mm, the outer diameter and height of the central cylindrical die are 15mm, 29 mm, and the diameter and depth of the formed groove are 15mm, 1 mm;

(2) taking out the sodium block stored in the kerosene in a vacuum glove box with water and oxygen content less than 0.1 ppm, wiping the kerosene on the surface by using dust-free paper, scraping an oxide layer on the surface of the sodium block by using a polytetrafluoroethylene scraper, leaking a bright part of the sodium block, and cutting the sodium block into suitable small blocks;

(3) after the central cylindrical dies and the clamping mechanism are cleaned, the integrated upper pressing plate is opened, each central cylindrical die is placed in a positioning hole of the integrated lower pressing plate to form a groove, and the cut sodium blocks are respectively placed in the grooves;

(4) the integrated lower pressing plate keeps flat, the handle of the integrated upper pressing plate is held to press downwards until the integrated upper pressing plate and the integrated lower pressing plate are in seamless fit;

(5) and opening the integrated upper pressing plate, removing redundant sodium at the edge part of the positioning hole by using a scraper, slightly lifting the integrated lower pressing plate, ejecting the central cylindrical die one by one from the lower part of the integrated lower pressing plate, clamping the sodium sheet above the central cylindrical die by using tweezers, and assembling the battery.

Technical Field

The invention belongs to the technical field of sodium ion button half-cell sodium sheet processing devices, and particularly relates to a handheld sodium ion button half-cell sodium sheet processing device.

Background

Lithium Ion Batteries (LIBs) have been successfully commercialized due to their advantages of high energy density, small size, long cycle life, environmental protection, no memory effect, and the like, and are widely used in the fields of consumer electronics, hybrid power, smart grid, and the like. With the increase of the demand of people on lithium ion batteries, the consumption of lithium is increased, and the problems of lithium resource shortage, high price and the like are met, so that the development of an alternative energy storage system with low cost, rich natural reserves and long cycle life is urgently needed. The sodium and lithium have similar physical and chemical properties and abundant resources, and the sodium ion battery and the lithium ion battery have similar working principles, so the sodium ion battery has a development prospect.

Like lithium ion batteries, positive/negative electrode materials are also one of the keys in determining the performance of sodium ion batteries. In the basic research process of the sodium ion battery, a sodium sheet is taken as a counter electrode, a button half battery is assembled for test analysis, and a positive/negative electrode material is evaluated. However, no commercial sodium tablet is currently available for direct use due to the aggressive chemical nature of sodium, and researchers are required to form sodium tablets from sodium blocks. Because no special processing tool or equipment is provided, the manufactured sodium sheet has poor flatness and smoothness and nonuniform thickness, and has great influence on the qualification rate of battery assembly, the evaluation of electrode materials and the experimental timeliness. Therefore, it is urgently needed to develop a processing device which is simple and easy to operate and is convenient to regulate and control the required specifications of the sodium sheet such as the diameter, the thickness and the like.

In consideration of the influence of the material of the processing device on the sodium sheet manufacturing process, Polytetrafluoroethylene (PTFE) has the advantages of corrosion resistance, pollution resistance, high temperature resistance, non-adhesion, high toughness and strength and the like, so that the polytetrafluoroethylene material is adopted to manufacture the sodium sheet processing device.

Disclosure of Invention

The invention solves the technical problem of providing the hand-held sodium ion button half-cell sodium piece processing device which is simple in structure, reasonable in design and convenient to use.

The invention adopts the following technical scheme for solving the technical problems, and discloses a handheld sodium ion button half-cell sodium piece processing device which is characterized by comprising a polytetrafluoroethylene scraper, a clamping mechanism and a central cylindrical die, wherein the polytetrafluoroethylene scraper is used for scraping an oxide layer on the surface of a sodium piece and simultaneously cutting the sodium piece into small pieces, the clamping mechanism is composed of an integrated upper pressing plate with a handle, an integrated lower pressing plate with a positioning hole and the handle, and a hinge for connecting the integrated upper pressing plate and the integrated lower pressing plate, the central cylindrical die is matched with the positioning hole of the integrated lower pressing plate and is embedded in the positioning hole of the integrated lower pressing plate, and the height of the central cylindrical die is smaller than that of the positioning hole of the integrated lower pressing plate.

Further limiting, by designing the length, width and height of the integrated lower pressing plate and the number of the positioning holes, a plurality of metal sodium sheets can be manufactured at one time; the diameter of a processed sodium sheet can be controlled by designing the diameter of an integrated lower pressing plate positioning hole and a central cylindrical die, wherein the central cylindrical die is a solid cylinder, and the outer diameter of the central cylindrical die is consistent with the inner diameter of the positioning hole; the thickness of the processed sodium sheet can be controlled by designing the height difference between the central cylindrical die and the integrated lower pressing plate.

The invention relates to a using method of a hand-held sodium ion button half-cell sodium piece processing device, which is characterized by comprising the following specific processes:

(1) the length, width and height of the integrated lower pressing plate of the sodium sheet processing device are 100 mm, 100 mm and 30 mm, the inner diameter of the positioning hole is 15mm, the outer diameter and height of the central cylindrical die are 15mm, 29 mm, and the diameter and depth of the formed groove are 15mm, 1 mm;

(2) taking out the sodium block stored in the kerosene in a vacuum glove box with water and oxygen content less than 0.1 ppm, wiping the kerosene on the surface by using dust-free paper, scraping an oxide layer on the surface of the sodium block by using a polytetrafluoroethylene scraper, leaking a bright part of the sodium block, and cutting the sodium block into suitable small blocks;

(3) after the central cylindrical dies and the clamping mechanism are cleaned, the integrated upper pressing plate is opened, each central cylindrical die is placed in a positioning hole of the integrated lower pressing plate to form a groove, and the cut sodium blocks are respectively placed in the grooves;

(4) the integrated lower pressing plate keeps flat, the handle of the integrated upper pressing plate is held to press downwards until the integrated upper pressing plate and the integrated lower pressing plate are in seamless fit;

(5) and opening the integrated upper pressing plate, removing redundant sodium at the edge part of the positioning hole by using a scraper, slightly lifting the integrated lower pressing plate, ejecting the central cylindrical die one by one from the lower part of the integrated lower pressing plate, clamping the sodium sheet above the central cylindrical die by using tweezers, and assembling the battery.

Compared with the prior art, the invention has the following beneficial effects: the sodium sheet processing device provided by the invention can be used for preparing a plurality of metal sodium sheets at one time, has the advantages of simple structure, simple and convenient operation, long service life of the material, difficult deformation, capability of improving the operation efficiency and the specification consistency of the sodium sheets, and convenience for the research on the sodium storage performance of various anode/cathode materials.

Drawings

FIG. 1 is a flow chart of the process of the present invention;

FIG. 2 is a schematic view of the clamping mechanism of the present invention;

FIG. 3 is an expanded view of the clamping mechanism of the present invention;

fig. 4 is a schematic structural view of the center cylindrical mold of the present invention.

In the figure: 1-integrated lower pressing plate, 2-positioning hole, 3-hinge, 4-integrated upper pressing plate and 5-central cylindrical die.

Detailed Description

The technical scheme of the invention is described in detail with reference to the accompanying drawings. As shown in fig. 2-4, a hand-held type sodium ion button half cell sodium piece processingequipment, including polytetrafluoroethylene scraper, fixture and central cylinder mould 5, wherein the polytetrafluoroethylene scraper is used for scraping off the oxide layer on sodium piece surface and is cut into the fritter with the sodium piece branch simultaneously, fixture is by the integral type top board 4 that has the handle, integral type holding down plate 1 that has locating hole 2 and handle and the hinge 3 of connecting integral type top board 4 and integral type holding down plate 1 constitute, central cylinder mould 5 matches with locating hole 2 of integral type holding down plate 1 and central cylinder mould 5 is embedded in locating hole 2 of integral type holding down plate 1, the height of central cylinder mould 5 is less than the locating hole 2 height of integral type holding down plate 1.

According to the invention, by designing the length, width and height of the integrated lower pressing plate and the number of the positioning holes, a plurality of metal sodium sheets can be manufactured at one time; the diameter of the sodium sheet can be controlled by designing the diameter of the integrated lower pressing plate positioning hole and the central cylindrical die, wherein the central cylindrical die is a solid cylinder, and the outer diameter of the central cylindrical die is consistent with the inner diameter of the positioning hole; according to the invention, the thickness of the processed sodium sheet can be controlled by designing the height difference between the central cylindrical die and the integrated lower pressing plate.

The invention takes the preparation of a sodium sheet with the diameter of 15mm and the thickness of 1mm as an example, and the specific operation process is as follows:

(1) as shown in fig. 3, the integrated lower platen of the sodium sheet processing apparatus has a length, width, and height of 100 mm, and 30 mm, an inner diameter of the positioning hole is 15mm, an outer diameter, and height of the central cylindrical mold are 15mm, 29 mm, and a diameter, and depth of the formed groove is 15mm, and 1 mm;

(2) taking out the sodium block stored in the kerosene in a vacuum glove box with water and oxygen content less than 0.1 ppm, wiping the kerosene on the surface by using dust-free paper, scraping an oxide layer on the surface of the sodium block by using a polytetrafluoroethylene scraper, leaking a bright part of the sodium block, and cutting the sodium block into suitable small blocks;

(3) after the central cylindrical dies and the clamping mechanism are cleaned, the integrated upper pressing plate is opened, each central cylindrical die is placed in a positioning hole of the integrated lower pressing plate to form a groove, and the cut sodium blocks are respectively placed in the grooves;

(4) the integrated lower pressing plate keeps flat, the handle of the integrated upper pressing plate is held to press downwards until the integrated upper pressing plate and the integrated lower pressing plate are in seamless fit;

(5) and opening the integrated upper pressing plate, removing redundant sodium at the edge part of the positioning hole by using a scraper, slightly lifting the integrated lower pressing plate, ejecting the central cylindrical die one by one from the lower part of the integrated lower pressing plate, clamping the sodium sheet above the central cylindrical die by using tweezers, and assembling the battery.

While there have been shown and described what are at present considered the fundamental principles of the invention, its essential features and advantages, the invention further resides in various changes and modifications which fall within the scope of the invention as claimed.