阅读说明：本技术 一种便于在手套箱内组装的固态电池装置 (Solid-state battery device convenient to assemble in glove box ) 是由 姜锴 刘训良 伊小萍 豆瑞锋 周文宁 苏福永 楼国锋 温治 于 2021-08-09 设计创作，主要内容包括：本发明提供一种便于在手套箱内组装的固态电池装置,属于固态电池实验技术领域。该装置包括O型环、弹簧A、弹簧B、内托管、正极绝缘螺纹盖、正极引线、负极引线、负极绝缘螺纹盖、负极密封螺纹环、外管和正极密封螺纹环,内托管管口中心上部放置固态电池,固态电池上下两侧分别通过弹簧A和弹簧B压紧,内托管下部管口通过正极密封螺纹环和正极绝缘螺纹盖密封,内托管外部套设外管,外管上部设置O型环,并通过负极密封螺纹环和负极绝缘螺纹盖密封。该装置不仅能保证电极片之间的合理受力,也可以有效分隔和密封电池的正负极,还可以通过透明的玻璃套管观察放电时电池内部情况变化,从而实现对固态电池的组装和实验测试。(The invention provides a solid-state battery device convenient to assemble in a glove box, and belongs to the technical field of solid-state battery experiments. The device includes the O type ring, spring A, spring B, interior trusteeship, anodal insulating thread lid, anodal lead wire, the negative pole lead wire, the insulating thread lid of negative pole, the sealed screw ring of negative pole, outer tube and anodal sealed screw ring, solid-state battery is placed on interior trusteeship mouth of pipe center upper portion, both sides compress tightly through spring A and spring B respectively about the solid-state battery, interior trusteeship lower part mouth of pipe is sealed through anodal sealed screw ring and anodal insulating thread lid, the outer tube is established to interior trusteeship outside of pipe cover, outer tube upper portion sets up the O type ring, and sealed through the sealed screw ring of negative pole and the insulating thread lid of negative pole. The device can not only ensure reasonable stress between the electrode plates, but also effectively separate and seal the positive and negative electrodes of the battery, and can observe the change of the internal condition of the battery during discharging through the transparent glass sleeve, thereby realizing the assembly and experimental test of the solid-state battery.)

1. A solid-state battery device convenient to assemble in a glove box, characterized in that: the device comprises an O-shaped ring (1), a spring A (2), a spring B (3), an inner support tube (4), an anode insulating threaded cover (5), an anode lead (6), a cathode lead (7), a cathode insulating threaded cover (8), a cathode sealing threaded ring (9), an outer tube (11) and an anode sealing threaded ring (12), wherein a solid-state battery (10) is placed on the upper portion of the center of a tube opening of the inner support tube (4), the upper side and the lower side of the solid-state battery (10) are respectively pressed through the spring A (2) and the spring B (3), the tube opening of the lower portion of the inner support tube (4) is sealed through the anode sealing threaded ring (12) and the anode insulating threaded cover (5), the outer tube (11) is sleeved outside the inner support tube (4), the O-shaped ring (1) is arranged on the upper portion of the outer tube (11) and is sealed through the cathode sealing threaded ring (9) and the cathode insulating threaded cover (8), the anode lead (6) is led out of the solid-state battery (10) from the inner support tube (4), a negative electrode lead (7) is led out from the outer tube (11).

2. The solid state battery device for facilitating assembly within a glove box as claimed in claim 1, wherein: the solid-state battery (10) is formed by sequentially stacking a gasket, a negative electrode, a diaphragm, a solid-state electrolyte, a positive electrode and a current collector, wherein the solid-state electrolyte is adhered to an upper pipe orifice of the inner support pipe (4) through a binder and covers the upper pipe orifice of the inner support pipe (4), the positive electrode and the current collector are arranged on one side, facing the inner support pipe (4), of the solid-state electrolyte, the positive electrode and the current collector are all positioned in the inner support pipe (4), one end of a spring B (3) is connected with the positive electrode, the other end of the spring B (3) is connected with a positive electrode insulation threaded cover (5); the diaphragm, the negative electrode and the gasket are stacked on the upper surface of the solid electrolyte from bottom to top, one end of the spring A (2) is connected with the gasket, and the other end of the spring A (2) is connected with the negative electrode insulation threaded cover (8).

3. The solid state battery device for facilitating assembly within a glove box as claimed in claim 1, wherein: the length of the outer pipe (11) is larger than that of the inner supporting pipe (4), and the length of the outer pipe (11) is 1.5-2.5 times that of the inner supporting pipe.

4. The solid state battery device for facilitating assembly within a glove box as claimed in claim 1, wherein: the inner supporting tube (4) and the outer tube (11) are made of insulating and corrosion-resistant materials, and when organic electrolyte is contained in the solid-state battery (11), organic glass cannot be used for manufacturing the inner supporting tube (4) and the outer tube (11).

5. The solid state battery device for facilitating assembly within a glove box as claimed in claim 1, wherein: the positive electrode insulation threaded cover (5), the negative electrode insulation threaded cover (8), the negative electrode sealing threaded ring (9) and the positive electrode sealing threaded ring (12) are all made of nylon materials.

6. The solid state battery device for facilitating assembly within a glove box as claimed in claim 1, wherein: when the solid-state battery (10) is made of a flexible electrolyte material, the pressure exerted by the spring A (2) is greater than the pressure exerted by the spring B (3).

7. The solid state battery device for facilitating assembly within a glove box as claimed in claim 1, wherein: the positive insulation threaded cover (5) is of a full-sealed or open structure.

Technical Field

The invention relates to the technical field of solid-state battery experiments, in particular to a solid-state battery device convenient to assemble in a glove box.

Background

A solid-state battery is composed of a positive electrode, a separator (solid electrolyte), a negative electrode, and the like. Inorganic solid electrolytes, represented by ceramic sheets, are widely used in the laboratory for the design of solid batteries, and have the characteristics of thinness, brittleness and fragility, thereby increasing the difficulty of battery assembly. In addition, common solid-state battery electrodes need to be sealed, in order to reduce interface impedance, appropriate pressure is needed to enable the electrode plates to be in close contact with the diaphragm, interface contact resistance is increased when the pressure is too low, the diaphragm is easily damaged when the pressure is too high, and the requirements are difficult to meet through a traditional battery assembly design scheme for laboratory testing.

At present, the assembled battery in a laboratory usually adopts the form of a button battery and a soft package battery. The button cell can exert too big pressure to the battery when pressing, and the ceramic wafer is very easy to crush. The soft package battery is difficult to separate and seal the positive electrode and the negative electrode of the solid-state battery with small size, and the soft package battery is more difficult to assemble in the glove box.

Disclosure of Invention

The invention provides a solid-state battery device convenient to assemble in a glove box, aiming at overcoming the problem of difficult assembly of the existing solid-state battery, which not only can ensure the close contact between electrode plates, but also can effectively separate and seal the positive electrode and the negative electrode of the battery, thereby realizing the assembly and experimental test of the solid-state battery.

The device includes the O type ring, spring A, spring B, interior trusteeship, anodal insulating thread lid, anodal lead wire, the negative pole lead wire, the insulating thread lid of negative pole, the sealed screw ring of negative pole, outer tube and the sealed screw ring of positive pole, solid-state battery is placed on interior trusteeship mouth of pipe center upper portion, both sides compress tightly through spring A and spring B respectively about the solid-state battery, interior trusteeship lower part mouth of pipe is sealed through the sealed screw ring of positive pole and the insulating thread lid of positive pole, the outer tube is established to interior trusteeship outside of pipe cover, outer tube upper portion sets up the O type ring, and seal through the sealed screw ring of negative pole and the insulating screw cap of negative pole, solid-state battery draws anodal lead wire from interior trusteeship, draw negative lead wire from the outer tube.

The solid-state battery is formed by sequentially stacking a gasket, a negative electrode, a diaphragm, a solid-state electrolyte, a positive electrode and a current collector, wherein the solid-state electrolyte is pasted on an upper pipe orifice of the inner support pipe through a binder and covers the upper pipe orifice of the inner support pipe, the positive electrode and the current collector are arranged on one side, facing the inner support pipe, of the solid-state electrolyte, the positive electrode and the current collector are all positioned in the inner support pipe, one end of a spring B is connected with the positive electrode and the other end of the current collector spring B is connected with a positive electrode insulation threaded cover; the diaphragm, the negative electrode and the gasket are stacked on the upper surface of the solid electrolyte from bottom to top, one end of the spring A is connected with the gasket, and the other end of the spring A is connected with the negative electrode insulation threaded cover.

The length of the outer pipe is larger than that of the inner supporting pipe, and the length of the outer pipe is 1.5-2.5 times that of the inner supporting pipe.

The inner supporting tube and the outer tube are made of insulating and corrosion-resistant materials such as organic glass and corundum, and when organic electrolyte is contained in the solid-state battery, the organic glass cannot be used for manufacturing the inner supporting tube and the outer tube.

The positive electrode insulation threaded cover, the negative electrode sealing threaded ring and the positive electrode sealing threaded ring are all made of nylon materials.

When the solid-state battery is made of flexible electrolyte material, the pressure exerted by the spring A is larger than the pressure exerted by the spring B.

The positive electrode insulating threaded cover is of a full-sealed or open structure.

The technical scheme of the invention has the following beneficial effects:

the device can overcome the defects of the traditional battery, realizes the application of the brittle inorganic solid electrolyte in the battery, ensures the contact of each electrode plate of the solid battery, ensures that the contact pressure is controllable, realizes the separation and sealing in the battery, is convenient to operate in a glove box, can prepare a plurality of battery samples at one time, and improves the scientific research efficiency. The diameter of the electrode plate is only between the inner diameter of the inner support tube and the inner diameter of the outer tube, so that the size requirement on the electrode plate is reduced. Its advantages are as follows: the close contact between the electrode plates is ensured, and the given pressure can be adjusted according to the requirements; the separation of the anode and the cathode and the sealing of the battery device are realized; the operability of assembling the solid-state battery in the glove box is greatly improved, and a plurality of batteries can be assembled at one time; the method is suitable for gas solid-state batteries (such as solid-state lithium-air batteries and the like); the circular electrode plate has wide application size, and the diameter of the solid electrolyte plate can be between the inner diameter of the inner support tube and the inner diameter of the outer tube; the shell adopts a transparent pipe sleeve, so that the change of the battery material in the charging and discharging process can be conveniently observed.

Drawings

Fig. 1 is a schematic view of an assembly of a hermetically sealed solid state battery device of the present invention;

FIG. 2 is a schematic structural view of a spring A12 according to the present invention;

FIG. 3 is a schematic structural view of a spring A15 according to the present invention;

FIG. 4 is a schematic structural view of a spring A18 according to the present invention;

FIG. 5 is a schematic structural view of a spring B12 according to the present invention;

FIG. 6 is a schematic structural view of a spring B15 according to the present invention;

FIG. 7 is a schematic structural view of a spring B18 according to the present invention;

FIG. 8 is a schematic view of a sealed positive insulated threaded cap according to the present invention;

FIG. 9 is a schematic view of the structure of the single port positive insulating threaded cap of the present invention;

FIG. 10 is a schematic view of a dual port positive insulated threaded cap according to the present invention;

FIG. 11 is a schematic view of a solid state battery assembly of the present invention employing a single port positive insulating threaded cap;

FIG. 12 is a schematic view of the structure of the negative insulation screw cap of the present invention;

FIG. 13 is a schematic view of a negative seal thread ring structure according to the present invention;

FIG. 14 is a schematic view of a positive seal thread ring structure of the present invention;

fig. 15 is a schematic structural view of the positive electrode insulating threaded cap of the present invention.

Wherein: 1-O-ring; 2-spring A; 3-spring B; 4-inner support tube; 5-positive pole insulation screw cap; 6-positive electrode lead; 7-a negative lead; 8-negative pole insulation screw cap; 9-negative sealing thread ring; 10-a solid-state battery; 11-an outer tube; 12-positive sealing threaded ring.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

The invention provides a solid-state battery device which is convenient to assemble in a glove box.

The device includes O type ring 1, spring A2, spring B3, interior trusteeship 4, anodal insulating thread lid 5, anodal lead wire 6, negative pole lead wire 7, negative pole insulating thread lid 8, negative pole sealing thread ring 9, outer tube 11 and anodal sealing thread ring 12, solid-state battery 10 is placed to 4 mouth of pipe center upper portions of interior trusteeship, solid-state battery 10 is last both sides down compress tightly through spring A2 and spring B3 respectively, the mouth of pipe of 4 lower parts of interior trusteeship is sealed through anodal sealing thread ring 12 and anodal insulating thread lid 5, outer tube 11 is established to interior trusteeship 4 outside cover, outer tube 11 upper portion sets up O type ring 1, and it is sealed through negative pole sealing thread ring 9 and negative pole insulating thread lid 8, anodal lead wire 6 is drawn forth from interior trusteeship 4 to solid-state battery 10, draw out negative pole lead wire 7 from outer tube 11.

As shown in fig. 1, which is an assembly diagram of a solid-state lithium cobalt oxide battery, a solid-state battery 10 is formed by sequentially stacking a gasket, a negative electrode, a diaphragm, a solid-state electrolyte, a positive electrode and a current collector, wherein the solid-state electrolyte is adhered to and covers an upper pipe orifice of an inner support pipe 4 through an adhesive, the positive electrode and the current collector are arranged on one side of the solid-state electrolyte facing the inner support pipe 4, the positive electrode and the current collector are all positioned in the inner support pipe 4, one end of a spring B3 is connected with the positive electrode and the current collector, and the other end of the spring B3 is connected with an insulating threaded cap 5 of the positive electrode; the diaphragm, the negative electrode and the gasket are stacked on the upper surface of the solid electrolyte from bottom to top, one end of the spring A2 is connected with the gasket, and the other end of the spring A2 is connected with the negative electrode insulation threaded cover 8.

Obviously, the outer tube 11 is longer than the inner stem 4.

The inner support tube 4 and the outer tube 11 are made of insulating and corrosion-resistant materials, and when organic electrolyte is contained in the solid-state battery 11, organic glass cannot be used for manufacturing the inner support tube 4 and the outer tube 11.

The positive insulation threaded cap 5, the negative insulation threaded cap 8, the negative sealing threaded ring 9 and the positive sealing threaded ring 12 are all made of nylon materials.

In the case of a flexible electrolyte material in the solid-state battery 10, the spring a2 exerts a greater pressure than the spring B3.

The positive electrode insulating threaded cover 5 is of a full-sealed or open structure.

In specific application, a solid electrolyte sheet is firmly bonded in the center of a pipe orifice of the inner supporting pipe 4 by using a sealing adhesive (product matching), positive and negative electrode sheets are respectively placed on two sides of the pipe orifice, and the positive and negative electrode sheets are tightly pressed by using springs on two sides, so that the separation of the positive electrode and the negative electrode of the solid battery and the tight contact between the electrode sheets and the solid electrolyte sheet can be realized. By adjusting the type and deformation of the spring, the acting force applied to the electrode plate can be changed so as to meet the requirement of reducing the interface impedance. In addition, due to the fact that the double-side spring pressing device is adopted, and the solid electrolyte sheet is firmly bonded to the pipe orifice of the inner supporting pipe, different pressures given by the anode and the cathode can be achieved, and higher requirements are met.

The battery is sealed into the outer tube through the outer tube, the thread sealing ring and the insulating thread cover, and the battery is conveniently operated in the glove box due to the fact that the battery is designed to be the thread sealing device, and the assembling difficulty of the solid-state battery is greatly reduced. For a solid-state battery of the metal-oxygen (air) battery type, the ventilation requirements can be met by using an apertured positive insulating sealing cover as shown in fig. 9. The lead port and the gaps between the inner tube and the outer tube are sealed, the lead port through which a lead passes is sealed by adopting sealing glue, and the outer tube and the inner support tube are sealed by adopting detachable nylon material sealing rings (as shown in figures 12, 13, 14 and 15) and matching with the raw material belt.

It should be noted that when the screw cap is screwed, a raw material tape is used to ensure the sealing of the inside of the battery. The self-contained spring may not be selected to be a strong spring to avoid damaging the brittle solid electrolyte, which can lead to internal shorting of the cell and cell failure. If the solid-state battery contains organic electrolyte, organic glass is not selected as the material of the inner trusteeship and the outer pipe, so that the pipe sleeve is prevented from being dissolved and damaged by organic solvent. If a flexible solid electrolyte material is adopted, the pressure applied by the spring A is required to be greater than the pressure applied by the spring B, so that the phenomenon that the battery deviates from the central position and the solid electrolyte material is damaged due to overlarge pressure of the spring B is avoided. The conductivity of the battery device needs to be checked periodically by the following method: the positive and negative current collectors are directly compacted and contacted by a spring, and the resistance condition of the circuit is measured by a universal meter.

The following description is given with reference to specific examples.

Example 1

Fig. 1 is a schematic diagram of this embodiment, and the internally mounted solid-state battery 10 is a solid-state lithium cobaltate battery. The inner supporting tube and the sleeve are made of organic glass materials, and the springs A and B are matched with springs A15 and B15 (springs A12, A18, B12 and B18 in figures 2, 4, 5 and 7 can be configured according to requirements, and numbers represent lengths) in figures 3 and 6. After the battery is assembled in the glove box, the positive connecting wire 6 and the negative connecting wire 7 can be connected for battery testing. The given pressure of the spring can be adjusted through the torsion of the positive pole insulating threaded cover 5 and the negative pole insulating threaded cover 8, and the given pressure can be quantitatively given according to the compression deformation amount of the spring.

Example 2

Fig. 11 is a schematic diagram of this embodiment, and the internally mounted solid-state battery 10 is a solid-state lithium-air battery. Since the air battery requires ventilation (air, oxygen, etc.), the positive electrode insulating screw cap 5 is replaced with a single-hole or double-hole screw cap as shown in fig. 9 or 10 from the sealing structure of fig. 8. The gas can be diffused to the battery anode through the pore passage of the single-hole or double-hole thread cover, the double-hole thread cover can be matched with the outer pipe with the corresponding pipe diameter, and the external equipment controls the gas flow. The inner supporting tube and the sleeve are made of glass materials, and the spring A and the spring B are respectively matched with No. A12 and B12 springs.

Therefore, the electrode plate can ensure the close contact between the electrode plate and the solid electrolyte plate, can effectively separate and seal the positive electrode and the negative electrode of the battery, is suitable for the sizes of various electrode plates, and realizes the assembly and experimental test of the solid battery. The inner supporting tube and the outer tube can adopt transparent glass tubes and organic glass tubes, so that observation is facilitated; quartz and corundum tubes that are resistant to corrosion and high temperatures may also be used. The spring can be configured and selected according to requirements. The matched binder is corrosion-resistant and well-sealed glue, and a high-temperature-resistant binder can also be prepared according to requirements.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.