Solid-state battery pressure test die

Abstract

The utility model discloses a solid-state battery pressure testing die, which belongs to the technical field of battery testing equipment and comprises a pressure applying component and a die battery, the die battery is arranged in the pressure applying component and comprises an outer cylinder locking sleeve, a zirconia-based cylinder, a bottom locking cover, an upper locking cover, an upper pressure head and a bottom pressure head, the zirconia-based cylinder is arranged in the outer cylinder locking sleeve, the bottom locking cover is arranged at the lower end of the outer cylinder locking sleeve, the upper locking cover is arranged at the upper end of the outer cylinder locking sleeve, a first via hole is formed in the center of the bottom locking cover, the bottom pressing head penetrates into the zirconia-based cylinder from the first via hole and extends into the zirconia-based cylinder, and a second via hole is formed in the center of the upper locking cover. And the upper pressure head penetrates through the second via hole and extends into the zirconium oxide-based cylinder. The device is simple in structure, convenient to disassemble and assemble, small in size, light in weight, convenient to machine, low in cost, capable of conducting testing in batches, resistant to high temperature and corrosion, good in air tightness and capable of well meeting testing conditions and requirements.

Description

TECHNICAL FIELD

[0001] The utility model belongs to battery test equipment technical field, concretely relates to a solid state battery pressure test mould. BACKGROUND

[0002] Solid state battery can significantly improve the safety and energy density of the battery by using solid-state electrolyte instead of organic electrolyte. However, the interface ion transmission capacity of the positive electrode, negative electrode and pure solid-state electrolyte is far less than that of the liquid-state electrolyte, so high pressure needs to be applied between the positive electrode, negative electrode and electrolyte.

[0003] For the currently commercialized button cell mould, the pressure provided by the rigidity of the shell is usually less than 10Mp, so in the process of developing solid-state electrolyte, a new solid-state battery mould becomes an indispensable device. However, the existing pressure test equipment is large in size, heavy in weight and cannot be used under high temperature conditions, so it cannot meet the test requirements. UTILITY MODEL CONTENTS

[0004] The utility model embodiment is aimed at providing a solid state battery pressure test mould which is simple in structure, convenient to use and can better improve the above problems.

[0005] The utility model embodiment is implemented as follows:

[0006] The utility model embodiment provides a solid state battery pressure test mould which comprises a pressure applying assembly and a mould cell, the mould cell is arranged in the pressure applying assembly, the mould cell comprises an outer cylinder locking sleeve, a zirconia-based simple cylinder, a bottom locking cover, an upper locking cover, an upper pressure head and a bottom pressure head, the zirconia-based simple cylinder is arranged in the outer cylinder locking sleeve, the bottom locking cover is arranged at the lower end of the outer cylinder locking sleeve, the upper locking cover is arranged at the upper end of the outer cylinder locking sleeve, a first through hole is arranged in the center of the bottom locking cover, the bottom pressure head penetrates from the first through hole and extends into the zirconia-based simple cylinder, a second through hole is arranged in the center of the upper locking cover, and the upper pressure head penetrates from the second through hole and extends into the zirconia-based simple cylinder.

[0007] Further, the upper end of the upper pressure head is provided with a first insulating cap, and the lower end of the bottom pressure head is provided with a second insulating cap.

[0008] Further, the bottom pressure head is in a T-shaped bolt structure, the rod part of the bottom pressure head penetrates from the first through hole and extends into the zirconia-based simple cylinder, and the first wire insertion hole is arranged on the side wall of the head part of the bottom pressure head; the upper pressure head is also in a T-shaped bolt structure, the rod part of the upper pressure head penetrates from the second through hole and extends into the zirconia-based simple cylinder, and the second wire insertion hole is arranged on the side wall of the head part of the upper pressure head.

[0009] Further, the head side wall of the bottom pressing head is provided with a plurality of clamping grooves in the circumferential direction, the head end surface of the bottom locking cover is provided with a sunken groove, and a plurality of limiting portions are arranged in the sunken groove, the limiting portions are matched with the clamping grooves and one-to-one corresponding.

[0010] Further, a sealing ring is arranged between the zirconia-based simple cylinder and the bottom locking cover, and a sealing ring, a sealing gasket and a gasket are sequentially arranged from bottom to top between the zirconia-based simple cylinder and the upper locking cover.

[0011] Further, anti-skid lines are arranged on the outer circumferential surfaces of the outer cylinder locking sleeve, the bottom locking cover and the upper locking cover.

[0012] Further, the bottom locking cover and the upper locking cover are all screw-connected with the outer cylinder locking sleeve.

[0013] Further, the pressing assembly comprises a base, an upper pressing plate and a plurality of threaded studs, the lower ends of the threaded studs are fixed on the base, the number of the threaded studs is at least two and the threaded studs are uniformly arranged along the circumferential direction of the base, a plurality of through holes are arranged on the upper pressing plate, the upper ends of the threaded studs pass through the through holes, and locking nuts are arranged on the upper ends of the threaded studs.

[0014] Further, a groove is arranged at the middle position of the upper surface of the base.

[0015] Further, flat notches are arranged on the side walls of the lower ends of the threaded studs.

[0016] The solid-state battery pressure testing mold has the advantages that:

[0017] The solid-state battery pressure testing mold has the advantages that: BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of the drawings.

[0019] Figure 1 The structure schematic view of the pressing assembly provided by the embodiments of the present application is shown in the figure.

[0020] Figure 2 The structure schematic view of the mold battery provided by the embodiments of the present application is shown in the figure.

[0021] Figure 3 Structure diagram of bottom locking cover;

[0022] Figure 4 Structure diagram of bottom pressing head;

[0023] Figure 5 Structure diagram of upper pressing head;

[0024] In the figure: 1-pressing assembly; 11-base; 111-groove; 12-upper pressing plate; 13-stud; 131-flat notch; 14-locking nut; 2-mold battery; 21-outer cylinder locking sleeve; 22-zirconia-based simple cylinder; 23-bottom locking cover; 231-first via hole; 232-limiting part; 24-upper locking cover; 25-upper pressing head; 251-second wire insertion hole; 252-first insulating cap; 26-bottom pressing head; 261-first wire insertion hole; 262-clamping groove; 263-second insulating cap; 27-sealing ring; 28-sealing gasket; 29-gasket. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0026] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0027] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0028] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, or the orientation or positional relationship commonly understood by those skilled in the art, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0029] In the description of the utility model, still need to explain, unless another explicit provision and limitation, term '' set '', '' install '', '' link '', '' connect '' should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, can be direct connection, also can be indirectly connected through the intermediate medium, can be two element internal communication, for ordinary skilled in the art, can understand the specific meaning of the above-mentioned terms in the utility model with specific circumstances.

[0030] Reference Figure 1 And 2 As shown in the utility model embodiment provides a kind of solid-state battery pressure test mould, including the pressure assembly 1 and mould battery 2 of cooperation.

[0031] Pressure assembly 1 includes base 11, upper pressing plate 12 and stud 13.Base 11 and upper pressing plate 12 are both round plate structure, the lower end of stud 13 is fixed on base 11, to facilitate disassembly, stud 13 is threadedly connected with base 11, to facilitate screwing stud 13, the lower end side wall of stud 13 is equipped with flat gap 131, the number of stud 13 is two and is uniformly distributed on the same circumference along the circumference of base 11, of course, the number of stud 13 can also be three, or more than three, upper pressing plate 12 is equipped with multiple through holes, the number of through hole is same with the number of stud 13, the upper end of stud 13 passes through through hole, upper pressing plate 12 can slide up and down along the axis of stud 13, the upper end of stud 13 is also equipped with lock nut 14.

[0032] The middle position of the upper surface of base 11 is equipped with recess 111, so as to accurately place mould battery 2.

[0033] Mould battery 2 includes outer cylinder locking sleeve 21, zirconia-based simple cylinder 22, bottom locking cover 23, upper locking cover 24, upper pressing head 25 and bottom pressing head 26.

[0034] Outer cylinder locking sleeve 21 is cylindrical structure, its inside is the passage through both ends, the outer side wall of the upper end of outer cylinder locking sleeve 21 is equipped with external thread, the inner wall of the lower end passage of outer cylinder locking sleeve 21 is equipped with internal thread.

[0035] Reference Figure 3 As shown in the utility model embodiment provides a kind of solid-state battery pressure test mould, including the pressure assembly 1 and mould battery 2 of cooperation. The upper end of bottom locking cover 23 is equipped with external thread, bottom locking cover 23 is arranged at the lower end of outer cylinder locking sleeve 21 and cooperates with the internal thread of passage inner wall, upper locking cover 24 has internal thread, upper locking cover 24 is arranged at the upper end of outer cylinder locking sleeve 21 and cooperates with the external thread of its upper end outer side wall.The center of bottom locking cover 23 is equipped with first via hole 231, the center of upper locking cover 24 is equipped with second via hole, first via hole 231 and second via hole are all communicated with the passage of outer cylinder locking sleeve 21.

[0036] The head end surface of the bottom locking cover 23 is also provided with a sunken groove, and a plurality of limiting portions 232 are arranged in the circumferential direction in the sunken groove. The number of the limiting portions 232 can be one, two or more. In the embodiment, the number of the limiting portions 232 is three.

[0037] The zirconia-based simple cylinder 22 has a cylindrical structure, and its diameter is slightly smaller than the channel diameter of the outer cylinder locking sleeve 21. The zirconia-based simple cylinder 22 is arranged in the channel of the outer cylinder locking sleeve 21, and the inside of the zirconia-based simple cylinder 22 also has a channel penetrating through both ends thereof.

[0038] The central axis of the first through hole 231, the central axis of the second through hole, and the central axis of the channel of the zirconia-based simple cylinder 22 coincide.

[0039] In order to ensure the sealing property, a sealing ring 27 is arranged between the zirconia-based simple cylinder 22 and the bottom locking cover 23, and a sealing ring 27, a sealing gasket 28 and a gasket 29 are sequentially arranged from bottom to top between the zirconia-based simple cylinder 22 and the upper locking cover 24.

[0040] Anti-skid lines are arranged on the outer circumferential surfaces of the outer cylinder locking sleeve 21, the bottom locking cover 23 and the upper locking cover 24, so that the operation is facilitated and slipping is avoided.

[0041] Reference Figure 4 and 5 As shown in the figure, the bottom pressing head 26 has a T-shaped bolt structure, the rod part of which penetrates into the zirconia-based simple cylinder 22 from the first through hole 231 of the bottom locking cover 23 and extends into the zirconia-based simple cylinder 22, and the head side wall of the bottom pressing head 26 is provided with a first wire insertion hole 261. A plurality of clamping grooves 262 are also arranged in the circumferential direction on the head side wall of the bottom pressing head 26, and the number of the clamping grooves 262 is the same as and corresponds to the number of the limiting portions 232 on the bottom locking cover 23. The clamping grooves 262 cooperate with the limiting portions 232, so that the rotation of the bottom pressing head 26 relative to the bottom locking cover 23 can be avoided to cause abrasion of the sealing ring 27. The upper pressing head 25 also has a T-shaped bolt structure, the rod part of which penetrates into the zirconia-based simple cylinder 22 from the second through hole of the upper locking cover 24 and extends into the zirconia-based simple cylinder 22, and the head side wall of the upper pressing head 25 is provided with a second wire insertion hole 251. The zirconia-based simple cylinder 22 is provided with a solid-state electrolyte, and the bottom pressing head 26 and the upper pressing head 25 can be compacted. The first wire insertion hole 261 and the second wire insertion hole 251 are arranged to facilitate the connection of the wires for electrochemical testing.

[0042] In order to ensure the insulation between the mold cell 2 and the pressing assembly 1, the upper end of the upper pressing head 25 is provided with a first insulation cap 252, and the lower end of the bottom pressing head 26 is provided with a second insulation cap 263.

[0043] The outer cylinder locking sleeve 21, the bottom locking cover 23, the upper locking cover 24, the sealing ring 27, the sealing gasket 28 and the gasket 29 can be made of polytetrafluoroethylene, polyether ether ketone, nylon and the like. The bottom pressure head 26 and the upper pressure head 25 can be made of copper, iron, aluminum and alloys thereof, polytetrafluoroethylene, polyether ether ketone, nylon and the like.

[0044] During the pressure test, the mold battery 2 is placed in the pressure assembly 1, the second insulating cap 263 of the bottom pressure head 26 is clamped in the groove 111 on the base 11, the upper pressure plate 12 presses the first insulating cap 252 of the upper pressure head 25, and the locking nut 14 on the upper end of the stud 13 is screwed, so that the mold battery 2 can be subjected to pressure, and the pressure borne by the mold battery 2 can be calculated through the torque applied by the nut.

[0045] The utility model is not limited to the above optional implementation, and anyone can derive other various forms of products under the inspiration of the utility model, but no matter any change in shape or structure, any technical scheme falling within the scope defined by the claims of the utility model falls within the protection scope of the utility model.

Claims

1. A solid state battery pressure test mold, characterized by: The application relates to a pressing assembly and a die cell, the die cell is arranged in the pressing assembly, the die cell comprises an outer cylinder locking sleeve, a zirconia-based simple cylinder, a bottom locking cover, an upper locking cover, an upper pressing head and a bottom pressing head, the zirconia-based simple cylinder is arranged in the outer cylinder locking sleeve, the bottom locking cover is arranged at the lower end of the outer cylinder locking sleeve, the upper locking cover is arranged at the upper end of the outer cylinder locking sleeve, a first through hole is arranged in the center of the bottom locking cover, the bottom pressing head penetrates into the zirconia-based simple cylinder from the first through hole and extends into the zirconia-based simple cylinder, a second through hole is arranged in the center of the upper locking cover, the upper pressing head penetrates into the zirconia-based simple cylinder from the second through hole and extends into the zirconia-based simple cylinder.

2. The solid state battery pressure test mold of claim 1, wherein: The upper end of the upper pressing head is provided with a first insulation cap, and the lower end of the bottom pressing head is provided with a second insulation cap.

3. The solid state battery pressure test mold of claim 1, wherein: The bottom pressing head is in a T-shaped bolt structure, the rod part of the bottom pressing head penetrates into the zirconia-based simple cylinder from the first through hole and extends into the zirconia-based simple cylinder, and a first wire insertion hole is arranged on the side wall of the head part of the bottom pressing head; the upper pressing head is also in a T-shaped bolt structure, the rod part of the upper pressing head penetrates into the zirconia-based simple cylinder from the second through hole and extends into the zirconia-based simple cylinder, and a second wire insertion hole is arranged on the side wall of the head part of the upper pressing head.

4. The solid state battery pressure test mold of claim 1, wherein: A plurality of clamping grooves are arranged on the side wall of the head part of the bottom pressing head in the circumferential direction, a sunken groove is arranged on the head end face of the bottom locking cover, a plurality of limiting parts are arranged in the sunken groove, and the limiting parts are matched with and correspond to the clamping grooves one by one.

5. The solid state battery pressure test mold of claim 1, wherein: A sealing ring is arranged between the zirconia-based simple cylinder and the bottom locking cover, and a sealing ring, a sealing gasket and a gasket are sequentially arranged between the zirconia-based simple cylinder and the upper locking cover from bottom to top.

6. The solid state battery pressure test mold of claim 1, wherein: Anti-skid lines are arranged on the outer circumferential surfaces of the outer cylinder locking sleeve, the bottom locking cover and the upper locking cover.

7. The solid state battery pressure test mold of claim 1, wherein: The bottom locking cover and the upper locking cover are both screw-connected with the outer cylinder locking sleeve.

8. The solid state battery pressure test mold of claim 1, wherein: The pressing assembly comprises a base, an upper pressing plate and studs, the lower ends of the studs are fixed on the base, the number of the studs is at least two and the studs are uniformly arranged along the circumferential direction of the base, a plurality of through holes are arranged on the upper pressing plate, the upper ends of the studs penetrate through the through holes, and the upper ends of the studs are further provided with locking nuts.

9. The solid state battery pressure test mold of claim 8, wherein: A groove is arranged at the middle position of the upper surface of the base.

10. The solid state battery pressure test mold of claim 8, wherein: Flat notches are arranged on the side walls of the lower ends of the studs.

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