CN209656593U - Battery in situ X-ray diffraction diffraction testing auxiliary device - Google Patents

Abstract

The utility model provides a kind of battery in situ X-ray diffraction diffraction testing auxiliary device, it is related to the technical field of secondary cell, including upper cover, X-ray transmission window and the base unit being from top to bottom arranged, upper cover is provided with perforative beam orifice up and down, base unit is provided with the accommodating cavity for accommodating test suite, and beam orifice and accommodating cavity are opposite with X-ray transmission window；It further include transmissive window protective film, transmissive window protective film is set between X-ray transmission window and base unit, for separating X-ray transmission window and accommodating cavity；Upper cover and base unit are sealed and detachable are fixedly connected.The X-ray transmission window that the battery in situ X-ray diffraction diffraction testing auxiliary device improves metallic beryllium composition contacts the problem of being corroded, be unfavorable for cost savings with electrolyte.

Description

Battery in-situ X-ray diffraction test auxiliary device

technical field

The utility model relates to the technical field of secondary batteries, in particular to an auxiliary device for in-situ X-ray diffraction testing of batteries.

Background technique

Energy crisis and environmental problems are the main problems facing the current social development, and the development and utilization of sustainable and clean new energy provide an effective way to fundamentally solve this problem. In the process of development and utilization of sustainable clean new energy, energy storage and conversion is one of the most critical technologies. Due to its high energy density and efficiency, secondary ion batteries have become the most promising energy storage technology and are widely used in all aspects of people's lives, such as electric vehicles, smartphones, laptops, and so on.

The charge and discharge state of the positive and negative electrode materials of the secondary ion battery involves the deintercalation and intercalation of ions and reversible redox reactions, which often lead to changes in the microstructure. X-ray diffraction test can effectively characterize the microstructure of materials, and can provide intuitive support for analyzing the structural changes of electrode materials during electrochemical processes. The in-situ characterization method can provide real-time monitoring of the structural changes of the electrode materials during the charging and discharging process, which is conducive to in-depth analysis of the development process of the physical and chemical properties of the electrode materials and even the electrode/electrolyte interface during the electrochemical charging and discharging process and energy storage. mechanism.

The battery in-situ X-ray diffraction test auxiliary device provides the necessary structural basis for the battery in-situ X-ray diffraction test. However, in the prior art, the disadvantage of the battery in-situ X-ray diffraction test auxiliary device is that the X-rays composed of metal beryllium The transmission window is in contact with the electrolyte, will be corroded, and needs to be replaced frequently, which is very unfavorable for cost saving.

Utility model content

The purpose of this utility model is to provide an auxiliary device for in-situ X-ray diffraction testing of batteries, so as to alleviate the contact between the X-ray transmission window made of metal beryllium and the electrolyte in the auxiliary device for in-situ X-ray diffraction testing of batteries existing in the prior art. Corroded, need to be replaced frequently, not conducive to cost-saving technical problems.

The battery in-situ X-ray diffraction test auxiliary device provided by the utility model includes an upper cover, an X-ray transmission window and a base unit arranged from top to bottom, the upper cover is provided with transmission holes penetrating up and down, and the base unit is provided In the accommodating cavity for accommodating the test component, both the transmission hole and the accommodating cavity are opposite to the X-ray transmission window;

It also includes a protective film for the transmission window, the protection film for the transmission window is arranged between the X-ray transmission window and the base unit, and is used to separate the X-ray transmission window from the accommodating cavity; the upper cover It is sealed and detachably fixedly connected with the base unit.

Further, the transmission window protection film includes an aluminum film.

Further, the thickness of the aluminum film is 5 μm-100 μm.

Further, the transmission window protection film includes a conductive part for contacting the electrode to be tested and a protection part for separating the X-ray transmission window from the accommodating cavity, and an opening is arranged in the center of the conductive part. The hole, the protective part is fixed at the opening, and the size of the protective part is larger than the size of the opening.

Further, the base unit includes a base and an insulating seat fixed on the base, a through hole is provided in the middle of the insulating seat, and the base and the through hole together form the accommodating cavity;

The test assembly includes a battery assembly to be tested and a compression assembly, the battery assembly to be tested and the compression assembly are sequentially arranged in the accommodating cavity, and the compression assembly is located at the bottom of the accommodating cavity .

Further, the pressing assembly includes a gasket and an elastic piece, the gasket abuts against the battery assembly to be tested, the elastic piece is located between the gasket and the base, and is in contact with the gasket and the battery assembly. The bases are all in contact with each other.

Further, the battery assembly to be tested includes an electrode to be tested, a diaphragm and a counter electrode, the diaphragm cover is arranged on the end of the through hole away from the base, the electrode to be tested is arranged on the upper end of the diaphragm close to the On one side of the cover, the counter electrode is arranged on the side of the diaphragm close to the base; the X-ray transmission window and the electrode to be tested are in close contact with the protection film of the transmission window.

Further, the top end of the insulating seat is provided with a first annular groove surrounding the through hole, the bottom end of the insulating seat is provided with a second annular groove surrounding the through hole, and the first annular recess A sealing ring is embedded in the groove and the second annular groove, and the insulating seat is sealed and connected with the upper cover and the base through the sealing ring.

Further, the size of the transmission window protection film is greater than or equal to the size of the sealing ring at the top of the insulating seat.

Further, the battery in-situ X-ray diffraction test auxiliary device includes multiple sets of connecting components, each set of connecting components includes bolts and insulating sleeves sleeved on the bolts; a first connection hole, a plurality of second connection holes are provided on the insulating base, a third connection hole is provided on the base, the first connection hole, the second connection hole and the third connection hole The holes are in one-to-one correspondence; the bolts pass through the corresponding first connection hole, the second connection hole and the third connection hole to fasten the upper cover, the insulating seat and the base together; the insulating sleeve is used to isolate the bolt and the upper cover;

And/or, the X-ray transmission window is fixedly connected with the upper cover.

Compared with the prior art, the battery in-situ X-ray diffraction test auxiliary device provided by the utility model has the following beneficial effects:

In the battery in-situ X-ray diffraction test auxiliary device provided by the utility model, a transmission window protective film is set between the X-ray transmission window and the base unit, and the X-ray transmission window (for example: beryllium window) and the base unit are separated by the transmission window protection film. The accommodating cavity used for accommodating the test components can reduce or even avoid the X-ray transmission window being corroded by the electrolyte in the in-situ X-ray diffraction test of the battery, which is conducive to prolonging the service life of the X-ray transmission window, thereby helping to save costs .

Description of drawings

In order to more clearly illustrate the specific implementation of the utility model or the technical solutions in the prior art, the accompanying drawings that need to be used in the description of the specific implementation or the prior art will be briefly introduced below. Obviously, the following descriptions The accompanying drawings are some implementations of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without any creative work.

Fig. 1 is an exploded view of the battery in-situ X-ray diffraction test auxiliary device provided by the embodiment of the present invention;

Fig. 2 is a cross-sectional view of the battery in-situ X-ray diffraction test auxiliary device provided by the embodiment of the present invention;

Figure 3 is an enlarged view of A in Figure 2;

Fig. 4 is the charging and discharging curve of the battery in-situ X-ray diffraction test auxiliary device provided by the embodiment of the present invention;

Fig. 5 is an in-situ X-ray diffraction spectrum test curve of the battery in-situ X-ray diffraction test auxiliary device provided by the embodiment of the present invention.

Icons: 1-top cover; 2-X-ray transmission window; 3-transmission window protective film; 4-base; 5-insulation seat; 6-gasket; 7-shrapnel; 8-electrode to be tested; -counter electrode; 11-sealing ring; 12-bolt; 13-insulating sleeve; 14-conductive column.

Detailed ways

The technical solutions of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the utility model, but not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, use a specific The azimuth structure and operation, therefore can not be construed as the limitation of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

As shown in Figures 1 and 2, the battery in-situ X-ray diffraction test auxiliary device provided in this embodiment includes an upper cover 1, an X-ray transmission window 2 and a base unit arranged from top to bottom. The base unit is provided with an accommodating cavity for accommodating the test components, both the transmission hole and the accommodating cavity are opposite to the X-ray transmission window 2 . The auxiliary device for in-situ X-ray diffraction testing of the battery further includes a transmission window protection film 3, which is arranged between the X-ray transmission window 2 and the base unit, and is used to separate the X-ray transmission window 2 from the accommodating cavity. The upper cover 1 and the base unit are sealed and detachably fixedly connected.

In the battery in-situ X-ray diffraction test auxiliary device provided in this embodiment, a transmission window protective film 3 is provided between the X-ray transmission window 2 and the base unit, and the X-ray transmission window 2 (for example: a beryllium window) is separated by the transmission window protection film 3 ) and the accommodating cavity for accommodating the test components in the base unit can reduce or even prevent the X-ray transmission window 2 from being corroded by the electrolyte in the in-situ X-ray diffraction test of the battery, which is beneficial to prolong the service life of the X-ray transmission window 2, This is beneficial to cost savings.

In addition, the sealed and detachable fixed connection between the upper cover 1 and the base unit facilitates the repeated use of the battery in-situ X-ray diffraction test auxiliary device provided in this embodiment.

The upper cover 1 and the base unit are sealed and detachably fixedly connected, and the X-ray transmission window 2 and the transmission window protection film 3 between them are pressed.

It should be noted that the X-ray transmission window 2 mentioned in this embodiment may be a beryllium window, but is not limited to be a beryllium window.

In an optional technical solution of this embodiment, the transmission window protection film 3 includes an aluminum film.

The aluminum film has good X-ray transmission performance, which is conducive to the smooth progress of the in-situ X-ray diffraction test of the battery.

In an optional technical solution of this embodiment, the thickness of the aluminum film is 5 μm-100 μm.

The preferred thickness of the aluminum film is 10 μm-50 μm.

As an alternative, the transmission window protection film 3 includes a conductive part for contacting the electrode to be measured 8 and a protection part for separating the X-ray transmission window 2 from the accommodating cavity, and an opening is arranged in the center of the conductive part. The protection part is fixedly arranged at the opening and sealedly connected with the conductive part, and the size of the protection part is larger than the size of the opening.

The conductive part can be a film structure with good conductivity such as aluminum film, copper film or nickel film, and the protective part can be made of materials with good X-ray transmission properties such as polyimide; the protective part and the conductive part can be sealed by polyurethane Glue, polysulfide sealant, silicone sealant, acrylate sealant, silane-modified polyether sealant, thermosetting adhesive, light-curing adhesive or epoxy resin adhesive, etc., to form an anti-corrosion structure for beryllium windows.

The size of the protection part is greater than the size of the opening. As a specific implementation, when the opening is a round hole and the protection part is circular, the diameter of the protection part is at least 0.5mm larger than the diameter of the opening. Preferably, the protection The diameter of the part is 4mm larger than the diameter of the opening.

The conductive part is used to contact with the electrode 8 to be tested, and the size of the opening will be smaller than the size of the electrode 8 to be tested. As a specific implementation mode, when the hole and the electrode 8 to be tested are both circular, the opening can be The size of the hole is 0.5mm-20mm smaller than the size of the electrode 8 to be tested, preferably, the size of the opening is 4mm smaller than the size of the electrode 8 to be tested.

The transmission window protective film 3 can also be made of films of different materials through sealing and pasting.

It should be noted that the opening can be circular but not limited to circular; the conductive part can also be designed with other materials and structures that can conduct electricity and have good X-ray transmission performance.

In the optional technical solution of this embodiment, the base unit includes a base 4 and an insulating seat 5 fixed on the base 4, the middle part of the insulating seat 5 is provided with a through hole, and the base 4 and the through hole are jointly arranged to form an accommodating cavity. The test assembly includes a battery assembly to be tested and a pressing assembly, which are sequentially arranged in the accommodating chamber, and the pressing assembly is located at the bottom of the accommodating chamber.

The base 4 is made of a material that is resistant to electrolyte corrosion and has good electrical conductivity, such as: stainless steel (including different grades such as SUS310S, SUS316, 316L, 316F, 304, 304L, 321, 303, 303CU, 302, 301, 202 or 201) , aluminum and its alloys, copper and its alloys, or nickel and its alloys, etc.

The base 4 may be provided with a raised portion matching the accommodating cavity, and the raised portion protrudes into the accommodating cavity, which can reduce the volume of the accommodating cavity. The protruding part can be integral with the base 4, or can be a separate component that is resistant to electrolyte corrosion and has good electrical conductivity.

Insulating seat 5 can be made of polyamide (nylon), polyvinyl chloride (PVC), polycarbonate (PC plastics), polytetrafluoroethylene PTFE plastics, polytetrafluoroethylene-ethylene copolymer (ETFE plastics), soluble polytetrafluoroethylene Vinyl (PFA plastic), phenolic plastic, epoxy resin (EP), silicone plastic IS or polysulfone (PSU plastic) and other materials.

Preferably, the insulating seat 5 is made of polytetrafluoroethylene. The insulating seat 5 made of polytetrafluoroethylene not only has higher hardness but also has strong corrosion resistance.

As shown in Figures 1 to 3, in the optional technical solution of this embodiment, the compression assembly includes a gasket 6 and a shrapnel 7 arranged up and down, the gasket 6 is in contact with the battery component to be tested, and the shrapnel 7 is located on the gasket 6 Between the base 4 and in contact with both the gasket 6 and the base 4 .

The use of spacers 6 and shrapnel 7 in the compression assembly can not only make the battery compact, but also simple in structure, cheap in price, high in the success rate of battery installation, and will not produce gaps between parts during charging and discharging due to too many parts and too complicated a single part. The conductivity is unstable, resulting in the phenomenon that the battery cannot be charged and discharged normally.

The spacer 6 and the shrapnel 7 can be the gasket 6 and the shrapnel 7 used in commercial button batteries, for example, the models are CR3032, CR2477, CR2450, CR2430, CR2412, CR2354, CR2335, CR2330, CR2325, CR2320, CR2032, CR2025, CR2016 、CR1632、CR1620、CR1616、CR1225、CR1216、CR1025、CR1220、LIR2450、LIR2032、LIR2025、LIR2016、LIR2477、LIR2430、LIR2025、 LIR1654、LIR1632、LIR1620、LIR1616、LIR1254、LIR1220、LIR1025、 ML2032或者ML1220等的扣式Gasket 6 and shrapnel 7 used in the battery. Gasket 6 and shrapnel 7 adopt the used gasket 6 and shrapnel 7 of commercial button battery, which can reduce the cost on the one hand and ensure good contact between the electrode 10 and the base 4 on the other hand.

The inner diameter of the through hole in the insulating seat 5 is determined by the maximum diameter of the gasket 6, which can be greater than the diameter of the gasket 6 by 0.05mm-10mm, preferably greater than the diameter of the gasket 6 by 0.5mm.

As shown in Figures 1-3, in the optional technical solution of this embodiment, the battery assembly to be tested includes an electrode 8 to be tested, a diaphragm 9 and a counter electrode 10, and the cover of the diaphragm 9 is arranged at the end of the through hole away from the base 4. The measuring electrode 8 is set on the side of the diaphragm 9 close to the upper cover 1 , and the counter electrode 10 is set on the side of the diaphragm 9 close to the base 4 . Both the X-ray transmission window 2 and the electrode 8 to be tested are in close contact with the protection film 3 of the transmission window, thereby ensuring good electrical contact performance.

In this embodiment, the electrode 8 to be tested can be a thin sheet; it can also be directly coated on the transmission window protection film 3, so that the transmission window protection film 3 itself directly acts as a current collector; it can also be prepared by coating or deposition. The thin film on the diaphragm 9, at this time, the thickness of the electrode 8 to be tested can be 50 nm-1 mm, preferably 50 μm-100 μm.

The diaphragm 9 can be a glass fiber film, PE (polyethylene) film, PP (polypropylene) film, PP plus ceramic coated film, PE plus ceramic coated film, PP/PE double layer film, PP/PP double layer Common separators such as membrane, PP/PE/PP three-layer film, polyester film (PET) film, cellulose film, polyimide film (PI), polyamide film (PA), spandex film or aramid film9.

The amount of electrolytic solution dripping needs to make the diaphragm 9 soak.

The upper end of the insulating seat 5 can be provided with a groove for accommodating the diaphragm 9. The size of the groove is determined by the maximum size of the diaphragm 9. When both the groove and the diaphragm 9 are circular, the inner diameter of the groove can be greater than the diameter of the diaphragm 9 0.05mm-10mm, preferably, the inner diameter of the groove is 0.5mm larger than the diameter of the diaphragm 9; the height of the groove is determined by the thickness of the diaphragm 9, and the value range is 0.05mm-5mm, preferably 1mm.

In the optional technical solution of this embodiment, the top of the insulating seat 5 is provided with a first annular groove surrounding the through hole, the bottom end of the insulating seat 5 is provided with a second annular groove surrounding the through hole, and the first annular groove and the second annular groove are all embedded with a seal ring 11, the insulating seat 5 is sealed and connected with the upper cover 1 and the base 4 through the seal ring 11, and the fixed connection between the insulating seat 5 and the upper cover 1 and the base 4 makes the upper The sealing between the cover 1 and the base 4 and the insulating seat 5 is more reliable.

In this embodiment, the shape and size of the first annular groove and the shape and size of the second annular groove may be the same or different, and both may be circular but not limited to circular.

The material of the sealing ring 11 can be rubber, specifically nitrile rubber, hydrogenated nitrile rubber, fluorine rubber, butyl rubber, neoprene rubber, ethylene propylene rubber, acrylic rubber, natural rubber, polyurethane rubber, polyacrylate Rubber, fluororubber, silicone rubber, fluorosilicone rubber, metal rubber, styrene-butadiene rubber, polysulfide rubber, chloroether rubber, chlorinated polyethylene rubber, chlorosulfonated polyethylene rubber or butylpyridine rubber, etc., preferably perfluorosensitive Rubber, perfluorinated rubber has good resistance to electrolyte corrosion.

In an optional technical solution of this embodiment, the size of the transmission window protection film 3 is greater than or equal to the size of the sealing ring 11 at the top of the insulating seat 5 .

The sealing ring 11 seals the connection between the upper cover 1 and the insulating seat 5, and the size of the transmission window protective film 3 is greater than or equal to the size of the sealing ring 11 at the top of the insulating seat 5, which is beneficial to prevent the electrolyte in the accommodating cavity from transmitting X-rays. The window 2 is in contact, which is more beneficial to protect the X-ray transmission window 2 from electrolyte corrosion and prolong the service life of the X-ray transmission window 2 .

In an optional technical solution of this embodiment, the battery in-situ X-ray diffraction test auxiliary device includes multiple sets of connecting components, and each set of connecting components includes bolts 12 and insulating sleeves 13 sleeved on the bolts 12 . The upper cover 1 is provided with a plurality of first connection holes at intervals, the insulating base 5 is provided with a plurality of second connection holes, the base 4 is provided with a third connection hole, the first connection hole, the second connection hole and the third connection hole The holes correspond one by one. Bolts 12 pass through corresponding first connection holes, second connection holes and third connection holes to fasten the upper cover 1 , the insulating seat 5 and the base 4 together. The insulating sleeve 13 is used for isolating the bolt 12 and the upper cover 1 . And/or, the X-ray transmission window 2 is fixedly connected with the upper cover 1 .

The bolt 12 is isolated from the upper cover 1 by the insulating sleeve 13, which is beneficial to prevent short circuit of the battery; the X-ray transmission window 2 is fixedly connected to the upper cover 1, so that the relative position of the X-ray transmission window 2 and the upper cover 1 is more guaranteed and more stable. It is conducive to ensuring the smooth progress of the in-situ X-ray diffraction test of the battery.

Optionally, in this embodiment, the upper cover 1, the insulating seat 5 and the base 4 are all square, and each of the four corners of the upper cover 1 is provided with a first connection hole; the first connection hole and the second connection hole All are through holes, and the third connecting hole is a threaded hole corresponding to the bolt 12.

The material of insulating cover 13 can be polyamide (nylon), polyvinyl chloride (PVC), polycarbonate (PC plastics), polytetrafluoroethylene (PTFE plastics), polytetrafluoroethylene-ethylene copolymer (ETFE plastics), Soluble polytetrafluoroethylene (PFA plastic), phenolic plastic, epoxy resin (EP), silicone plastic (IS) or polysulfone (PSU plastic), etc., preferably polytetrafluoroethylene.

The X-ray transmission window 2 is fixedly connected with the upper cover 1. Optionally, the end of the upper cover 1 facing the base 4 is provided with a mounting groove for installing a beryllium window. The beryllium window is passed through polyurethane sealant, polysulfide sealant, silicone sealant , acrylate sealant, silane-modified polyether sealant, thermosetting adhesive, light-curing adhesive or epoxy resin adhesive, etc. are pasted in the installation groove; or directly welded in the installation groove; Set the installation groove, and the beryllium window is pasted on the window by polyurethane sealant, polysulfide sealant, silicone sealant, acrylate sealant, silane-modified polyether sealant, thermosetting adhesive, light-curing adhesive or epoxy resin adhesive, etc. Cover 1, or directly connected to the upper cover 1 by welding.

In an optional technical solution of this embodiment, both the upper cover 1 and the base 4 are fixedly connected with conductive posts 14 by means of threaded connection or welding, and the conductive posts 14 are used as terminal posts for battery testing.

Optionally, the conductive post 14 may be a bolt.

According to the battery in-situ X-ray diffraction test auxiliary device provided by the present embodiment, an aluminum-graphite double-ion battery is assembled, wherein the graphite sheet is used as the test electrode (positive pole), and the metal aluminum sheet is used as the counter electrode ₁₀ (negative pole). The electrolyte adopts LiPF6 electrolyte ( 1 M LiPF ₆ /EMC-VC (5 wt.% VC)). The charge-discharge curve is shown in FIG. 4 , and the in-situ X-ray diffraction spectrum test data is shown in FIG. 5 . During charging, the intensity and offset peaks of the X-ray diffraction spectrum peaks appear to be divided into peaks, which is consistent with the facts.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand : It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements to some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the various embodiments of the present invention Scope of technical solutions.

Claims (10)

1. a kind of battery in situ X-ray diffraction diffraction testing auxiliary device, which is characterized in that including be from top to bottom arranged upper cover (1), X-ray transmission window (2) and base unit, the upper cover (1) are provided with perforative beam orifice, the base unit up and down and are provided with For accommodating the accommodating cavity of test suite, the beam orifice and the accommodating cavity are opposite with the X-ray transmission window (2)；

It further include transmissive window protective film (3), the transmissive window protective film (3) is set to the X-ray transmission window (2) and the bottom Between seat unit, for separating the X-ray transmission window (2) and the accommodating cavity；The upper cover (1) and the base unit are close It envelope and detachable is fixedly connected.

2. battery in situ X-ray diffraction diffraction testing auxiliary device according to claim 1, which is characterized in that the transmissive window Protective film (3) includes aluminium film.

3. battery in situ X-ray diffraction diffraction testing auxiliary device according to claim 2, which is characterized in that the aluminium film With a thickness of 5 μm -100 μm.

4. battery in situ X-ray diffraction diffraction testing auxiliary device according to claim 1, which is characterized in that the transmissive window Protective film (3) include conductive part for being contacted with electrode to be measured (8) and for separate the X-ray transmission window (2) with it is described The protection portion of accommodating cavity, the center of the conductive part are provided with aperture, and the protection portion is fixedly arranged on the tapping, and the guarantor The size in shield portion is greater than the size of the aperture.

5. battery in situ X-ray diffraction diffraction testing auxiliary device according to claim 1-4, which is characterized in that institute Stating base unit includes pedestal (4) and the insulating base (5) being fixedly arranged on the pedestal (4), the middle part setting of the insulating base (5) There is through-hole, the pedestal (4) and the through-hole enclose jointly is set as the accommodating cavity；

The test suite includes mesuring battary component and holding down assembly, and the mesuring battary component and described is held down assembly successively It is set in the accommodating cavity, and described holds down assembly positioned at the bottom of the accommodating cavity.

6. battery in situ X-ray diffraction diffraction testing auxiliary device according to claim 5, which is characterized in that the compression group Part includes gasket (6) and elastic slice (7), and the gasket (6) abuts with the mesuring battary component, and the elastic slice (7) is located at described Between gasket (6) and the pedestal (4), and abutted with the gasket (6) and the pedestal (4).

7. battery in situ X-ray diffraction diffraction testing auxiliary device according to claim 5, which is characterized in that the electricity to be measured Pond component includes electrode to be measured (8), diaphragm (9) and to electrode (10), and diaphragm (9) lid is set to the through-hole far from described One end of pedestal (4), the electrode (8) to be measured is set to the side of the diaphragm (9) close to the upper cover (1), described to electricity Pole (10) is set to the side of the diaphragm (9) close to the pedestal (4)；The X-ray transmission window (2) and the electrode to be measured (8) it is in close contact with the transmissive window protective film (3).

8. battery in situ X-ray diffraction diffraction testing auxiliary device according to claim 5, which is characterized in that the insulating base (5) top is provided with the first annular groove around the through-hole, and the bottom end of the insulating base (5) is provided with around described logical It is embedded in the second annular groove in hole, the first annular groove and the second annular groove sealing ring (11), it is described Insulating base (5) is tightly connected by sealing ring (11) and the upper cover (1) and the pedestal (4).

9. battery in situ X-ray diffraction diffraction testing auxiliary device according to claim 8, which is characterized in that the transmissive window The size of protective film (3) is more than or equal to the size of the sealing ring (11) on the insulating base (5) top.

10. battery in situ X-ray diffraction diffraction testing auxiliary device according to claim 5, which is characterized in that connect including multiple groups Connected components, connection component described in every group include bolt (12) and the insulation sleeve (13) being sheathed on the bolt (12)；It is described It is arranged at intervals with multiple first connecting holes in upper cover (1), is provided with multiple second connecting holes, the bottom on the insulating base (5) Third connecting hole is provided on seat (4), first connecting hole, second connecting hole and the third connecting hole one are a pair of It answers；The bolt (12) passes through corresponding first connecting hole, second connecting hole and the third connecting hole, will be described Upper cover (1), the insulating base (5) and the pedestal (4) tighten together；The insulation sleeve (13) is for being isolated the bolt (12) and the upper cover (1)；

And/or the X-ray transmission window (2) is fixedly connected with the upper cover (1).