Observation device for in-situ working condition reaction of lithium battery

Abstract

The utility model relates to a lithium battery in-situ working condition reaction observation device, which comprises an outer shell; the observation cover is arranged on the opening of the outer shell, and the observation cover is provided with a transparent observation window; the battery placing device comprises a base, an internal connection tab, a thickness adjusting piece, a connecting piece and a side pressing piece, the internal connection tab is provided with an internal connection tab end part and an internal connection tab other end part, the internal connection tab end part is connected with the base through the connecting piece, the internal connection tab other end part is arranged on one side part of the base, and the thickness adjusting piece is arranged on the side pressing piece. The tab of the lithium battery section block is conducted with the internal connection tab through the connecting piece, the thickness adjusting piece is arranged on the inner side of the side pressing piece and used for abutting against the lithium battery section block, and the side pressing piece is connected with the other side of the base; an avoiding hole is formed in the side part of the outer shell, and the external tab penetrates through the avoiding hole and is in contact connection with the other end part of the internal tab; the method has the advantages of convenience in operation, repeated use, stability, reliability and the like, and can deeply explore complex electrode reaction behaviors in the actual battery system charging and discharging process.

Description

TECHNICAL FIELD

[0001] The utility model relates to material testing technical field, concretely relates to a kind of observation device of lithium battery in-situ working condition reaction. BACKGROUND

[0002] Lithium battery in-situ reaction observation has become an important direction of current battery in-situ process research.This in-situ observation can show various thermodynamic and kinetic behaviors in electrode reaction and battery reaction process in real time, and embodies the dynamic evolution characteristics of multi-modal such as microscopic morphology, crystal structure, mechanical stress and element concentration distribution on particle level, electrode level and battery level.The above multi-level multi-modal feature observation puts forward very high requirements for lithium battery in-situ reactor.On the one hand, the in-situ reaction device should be convenient to operate, and on the other hand, it should have high stability and reliability.However, most of the current in-situ reactors have the problems of complex operation, incomplete normal charging and discharging and long-time observation.In order to solve the problem, an optical observation device for lithium battery electrode reaction and battery reaction in-situ working condition reaction is developed. SUMMARY

[0003] The utility model solves the technical problem to provide a kind of observation device of lithium battery in-situ working condition reaction of novel structure.

[0004] To solve the above technical problems, the technical scheme adopted by the utility model is:

[0005] An observation device of lithium battery in-situ working condition reaction, comprising:

[0006] The outer shell is hollow, and the upper part has an outer shell opening;

[0007] An observation cover is arranged on the outer shell opening, and the observation cover has a transparent observation window;

[0008] A battery placement device comprises a base, an inner tab, a thickness adjusting member, a connecting member and a side pressing member. The inner tab has one end and the other end. The one end is connected to the base through the connecting member. The other end is arranged on one side of the base. The tab of the lithium battery cross-section block can be connected to the inner tab through the connecting member. The thickness adjusting member is arranged on the inner side of the side pressing member and is used to abut the lithium battery cross-section block. The side pressing member is connected to the other side of the base.

[0009] An outer tab is arranged on the side of the outer shell. The outer tab is connected to the other end of the inner tab through the clearance hole.

[0010] In an embodiment, the base is a cuboid, which has a front side, a back side, a left side and a right side,

[0011] The inner connecting tabs are two, and the other end portions of the two inner connecting tabs are arranged on the left side and the right side, and / or the side pressing members are two, and the two side pressing members are connected with the front side and the back side respectively.

[0012] In an embodiment, the other end portion of the inner connecting tab is detachably fixedly connected with one side of the base, and / or the side pressing member is detachably fixedly connected with the other side of the base.

[0013] In an embodiment, the lower portion of the outer shell is closed, and one of the inner side of the lower portion of the outer shell and the lower portion of the base is provided with a protrusion, and the other of the inner side of the lower portion of the outer shell and the lower portion of the base is provided with a groove matched with the protrusion.

[0014] In an embodiment, the thickness adjusting member is of a flexible material, and / or the side pressing member is of a flexible material.

[0015] In an embodiment, one end portion of the inner connecting tab is provided with a tab through hole, and the connecting member is arranged through the tab through hole.

[0016] In an embodiment, the length of the side pressing member in the up-down direction is greater than or equal to the sum of the length of the thickness adjusting member in the up-down direction and the length of the base in the up-down direction.

[0017] In an embodiment, the observation cover comprises an observation cover upper portion, a transparent observation window and an observation cover lower portion, and the transparent observation window is arranged between the observation cover upper portion and the observation cover lower portion.

[0018] In an embodiment, it further comprises an observation cover upper sealing ring arranged between the observation cover upper portion and the transparent observation window, and / or it further comprises an observation cover lower sealing ring arranged between the observation cover lower portion and the transparent observation window.

[0019] In an embodiment, it further comprises an outer shell first sealing ring arranged between the outer shell upper portion and the observation cover, and / or it further comprises an outer shell second sealing ring arranged between the outer shell side portion and the outer connecting tab.

[0020] Thanks to the above technical scheme, the present application has the following advantages compared with the prior art:

[0021] The utility model discloses a kind of observation devices of lithium battery in-situ working condition reaction of real-time observation lithium battery cross section working condition reaction, by optimizing battery placing device, ensure the quick and stable placement of lithium battery cross section battery block inside shell body, can repeatedly observe and long time observation, lay technical foundation for actual battery in-situ working condition observation, to actual lithium battery whole, especially microscopic morphology, electrochemical characteristic, mechanical structure, element change etc. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is battery placing device three-dimensional schematic view in an embodiment of the utility model;

[0023] Figure 2 It is battery placing device explosion view in an embodiment of the utility model;

[0024] Figure 3 It is observation device of lithium battery in-situ working condition reaction front view in an embodiment of the utility model;

[0025] Figure 4 It is observation device of lithium battery in-situ working condition reaction sectional view in an embodiment of the utility model;

[0026] Figure 5 It is observation device of lithium battery in-situ working condition reaction explosion view in an embodiment of the utility model;

[0027] In the drawing:

[0028] 1-shell body;2-observation cover;21-transparent observation window;22-observation cover upper portion;23-observation cover lower portion;31-base;311-boss;312-front side portion;313-left side portion;32-inner connection tab;321-inner connection tab one end portion;322-inner connection tab other end portion;33-thickness adjusting piece;34-connection piece;35-side pressing piece;36-nut;37-bolt;4-outer connection tab;5-lithium battery cross section block;61-shell body first sealing ring. DETAILED DESCRIPTION

[0029] The utility model is further described as follows in combination with the drawings and specific embodiments:

[0030] As Figures 1-2As shown, the utility model provides a kind of observation device of lithium battery in situ working condition reaction, in an embodiment, the observation device of lithium battery in situ working condition reaction includes shell body 1, observation cover 2, battery placement device and external lug 4, wherein:

[0031] Shell body 1 is hollowly arranged, and the upper portion of the shell body has a shell opening, the observation cover 2 is arranged on the shell opening, and the observation cover 2 can be connected to the shell body 1 by bolts, the observation cover 2 has a transparent observation window 21, specifically, in an embodiment, the observation cover 2 includes an observation cover upper portion 22, the transparent observation window 21 and an observation cover lower portion 23, the transparent observation window 21 is arranged between the observation cover upper portion 21 and the observation cover lower portion 23, and the material of the transparent observation window 21 can be quartz.

[0032] The battery placing device comprises a base 31, inner connection tabs 32, thickness adjusting pieces 33, connecting pieces 34 and side pressing pieces 35. The inner connection tabs 32 have an inner connection tab one end 321 and an inner connection tab other end 322. The inner connection tab one end 321 is connected with the base 31 through the connecting pieces 34, and the inner connection tab other end 322 is arranged on one side of the base 31. The tabs of the lithium battery cross-section block 5 can be connected with the inner connection tabs 32 through the connecting pieces 34. The two inner connection tabs 32 are arranged on the left and right sides of the base 31. In an embodiment, the base 31 is a cuboid, which has a front side 312, a rear side (not shown in the figure), a right side (not shown in the figure) and a left side 313. The two inner connection tab other ends 322 are arranged on the right side and the left side 313. The two side pressing pieces 35 are arranged on the front and rear sides of the base 1. The two side pressing pieces 35 are respectively connected with the base front side 312 and the base rear side. Specifically, the two side pressing pieces 35 can be screwed on the base front side 312 and the base rear side through bolts 37, so that the side pressing pieces 35 are detachably fixedly connected with the base front side 312 / base rear side. The two inner connection tabs 32 can be screwed on the base right side and the base left side 313 through bolts 37, so that the inner connection tab other ends 322 are detachably fixedly connected with the base right side / base left side 313. In an embodiment, the connecting pieces 34 are bolts. The inner connection tab one end 321 has a tab through hole. The connecting pieces 34 are sequentially arranged through the tab through hole, connected with nuts 36 at the rear of the base 1, and the lithium battery cross-section block tabs can be arranged between the base and the nuts and connected with the connecting pieces, and then connected with the inner connection tabs 32. The thickness adjusting pieces 33 are two pieces, which are arranged on the front inner side and the rear inner side of the side pressing pieces 35 and used for abutting against the lithium battery cross-section block 5. According to the different thicknesses of the lithium battery cross-section block 5 and different requirements for pressure, different thicknesses of the thickness adjusting pieces 33 can be replaced, so as to meet the needs of subsequent experiments. In an embodiment, the length of the side pressing pieces 35 in the up-down direction is greater than or equal to the sum of the length of the thickness adjusting pieces 33 in the up-down direction and the length of the base 31 in the up-down direction, that is, the length of the side pressing pieces 35 can cover the sum of the length of the thickness adjusting pieces 33 and the length of the base 31. The thickness adjusting pieces 33 and the side pressing pieces 35 can be screwed through the bolts 37, so that the thickness adjusting pieces 33 and the side pressing pieces 35 are detachably fixedly connected. The thickness adjusting pieces 33 are made of flexible material, and the side pressing pieces 35 are made of flexible material. By arranging the two pieces to be flexible, damage to the lithium battery cross-section block 7 is prevented.

[0033] The lower part of the outer shell 1 is closed. One of the inner side of the lower part of the outer shell 1 and the lower part of the base 31 is provided with a protrusion 311, and the other of the inner side of the lower part of the outer shell 1 and the lower part of the base is provided with a groove (not shown in the figure) matched with the protrusion 311. By arranging the protrusion 311 and the groove, the battery placing device can be relatively stably arranged in the outer shell 1.

[0034] The shell 1 side is provided with a let hole, and the external lug 4 is arranged through the let hole and connected with the other end of the internal lug 32, so as to be communicated with the external equipment.

[0035] In order to prevent the observation device from entering the lithium battery in-situ working condition reaction, and also prevent the leakage of the battery electrolyte, the lithium battery in-situ working condition reaction observation device can further comprise a sealing ring, specifically, in an embodiment, it comprises an observation cover upper sealing ring (not shown in the figure), which is arranged between the observation cover upper portion 22 and the transparent observation window 21, in an embodiment, it further comprises an observation cover lower sealing ring (not shown in the figure), which is arranged between the observation cover lower portion 23 and the transparent observation window 21, in an embodiment, it further comprises a shell first sealing ring 61, which is arranged between the shell 1 upper portion and the observation cover 2, in an embodiment, it further comprises a shell second sealing ring (not shown in the figure), which is two and arranged between the shell 1 side and the external lug 4.

[0036] The above embodiment is only for illustrating the technical concept and characteristics of the utility model, and the purpose is to enable the person skilled in the art to understand the content of the utility model and to implement it, and it cannot limit the protection scope of the utility model. Any equivalent change or modification according to the spirit and essence of the utility model shall be covered within the protection scope of the utility model.

Claims

1. A device for observing in situ operating reactions of lithium batteries, characterized in that it comprises: The application relates to a lithium battery placing device, which comprises an outer shell, an observation cover, a battery placing device and an outer connecting lug. The outer shell is hollow and has an outer shell opening at the upper part; the observation cover is arranged on the outer shell opening and has a transparent observation window; the battery placing device comprises a base, an inner connecting lug, a thickness adjusting piece, a connecting piece and a side pressing piece; the inner connecting lug has an inner connecting lug one end and an inner connecting lug other end; the inner connecting lug one end is connected with the base through the connecting piece; the inner connecting lug other end is arranged on one side of the base; the lug of a lithium battery cross-section block can be connected with the inner connecting lug through the connecting piece; the thickness adjusting piece is arranged on the inner side of the side pressing piece and is used for abutting against the lithium battery cross-section block; and the side pressing piece is connected with the other side of the base. The outer connecting lug is arranged through a clearance hole on the side of the outer shell and is connected with the inner connecting lug other end. The base is a cuboid and has a front side, a back side, a left side and a right side. The inner connecting lug other end is arranged on the left side and the right side; and / or the side pressing piece is connected with the front side and the back side.

2. The apparatus of claim 1, wherein: The inner connecting lug other end is detachably fixed with one side of the base; and / or the side pressing piece is detachably fixed with the other side of the base. The lower part of the outer shell is closed; a convex block is arranged on one of the inner side of the lower part of the outer shell and the lower part of the base; and a groove matched with the convex block is arranged on the other of the inner side of the lower part of the outer shell and the lower part of the base.

3. The apparatus of claim 1, wherein: The thickness adjusting piece is made of flexible material; and / or the side pressing piece is made of flexible material.

4. The apparatus of claim 1, wherein: The inner connecting lug one end has a lug through hole, and the connecting piece is arranged through the lug through hole.

5. The apparatus of claim 1, wherein: The length of the side pressing piece in the up-down direction is greater than or equal to the sum of the length of the thickness adjusting piece in the up-down direction and the length of the base in the up-down direction.

6. The apparatus of claim 1, wherein: The observation cover comprises an observation cover upper part, a transparent observation window and an observation cover lower part, and the transparent observation window is arranged between the observation cover upper part and the observation cover lower part.

7. The apparatus of claim 1, wherein: The observation cover further comprises an observation cover upper sealing ring arranged between the observation cover upper part and the transparent observation window; and / or the observation cover further comprises an observation cover lower sealing ring arranged between the observation cover lower part and the transparent observation window.

8. The apparatus of claim 1, wherein: The outer shell further comprises an outer shell first sealing ring arranged between the outer shell upper part and the observation cover; and / or the outer shell further comprises an outer shell second sealing ring arranged between the outer shell side and the outer connecting lug.

9. The apparatus of claim 8, wherein: ​ 10. The apparatus of claim 1, wherein: ​

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