All-solid-state battery structure

Abstract

The utility model provides an all-solid-state battery structure, and relates to the technical field of all-solid-state battery production, the all-solid-state battery structure comprises a sealing assembly and a core pressing assembly, the sealing assembly comprises a hollow shell, and the shell is provided with a flexible piece communicated with the interior of the shell; the core pressing assembly is arranged in the outer shell and comprises an inner shell, a first pressing block and a second pressing block, the inner shell is hollow, the two ends of the inner shell are provided with openings, the first pressing block and the second pressing block are installed at the two ends of the inner shell respectively, and the second pressing block abuts against the flexible piece. The sealing device has good sealing performance and can bear large pressure applied by the outside.

Description

Technical Field

[0001] The utility model relates to the technical field of all-solid-state battery production, in particular to an all-solid-state battery structure. Background Art

[0002] Due to the current experimental research on all-solid-state batteries, an inert atmosphere is required, and the assembled battery needs to be sealed and transferred to an external test cabinet for testing. At the same time, to ensure the performance of the battery, a great pressure needs to be applied to press the electrodes to ensure the interface of the battery.

[0003] Currently, there is a lack of a battery structure with good sealing performance and capable of withstanding a large external pressure to complete the performance detection of all-solid-state batteries. Summary of the Utility Model

[0004] Aiming at the problems in the prior art, the utility model provides an all-solid-state battery structure with good sealing performance and capable of withstanding a large external pressure.

[0005] To achieve the above object, the utility model provides the following technical solutions:

[0006] An all-solid-state battery structure, comprising:

[0007] A sealing component, which includes a hollow outer shell, and a flexible member provided on the outer shell and communicating with the inside of the shell;

[0008] A core pressing component, which is arranged inside the outer shell. The core pressing component includes an inner shell with a hollow interior and open ends at both ends, as well as a first pressing block and a second pressing block. The first pressing block and the second pressing block are respectively installed at both ends of the inner shell, and the second pressing block abuts against the flexible member.

[0009] For the all-solid-state battery structure as described above, further, the outer shell includes a detachable upper shell and a lower shell, and the upper shell and the lower shell are detachably connected by threads.

[0010] For the all-solid-state battery structure as described above, further, a groove is provided at the connection between the upper shell and the lower shell, and a sealing ring is arranged in the groove.

[0011] For the all-solid-state battery structure as described above, further, the flexible member includes a joint and a diaphragm wound around the outside of the joint. The outer shell is provided with a through hole, one end of the joint penetrates through the through hole and extends out of the outer shell, and the other end of the joint abuts against the second pressing block. The diaphragm is close to the through hole and is arranged inside the outer shell.

[0012] For the all-solid-state battery structure as described above, further, it further includes a connecting plate, and the diaphragm and the outer shell are fixedly connected through the connecting plate.

[0013] For the all-solid-state battery structure described above, further, the materials of the first pressing block and the second pressing block are metals.

[0014] For the all-solid-state battery structure described above, further, the material of the inner shell is non-metal.

[0015] For the all-solid-state battery structure described above, further, the material of the lower shell is metal.

[0016] For the all-solid-state battery structure described above, further, the material of the separator is a flexible substance.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] 1. The present utility model can be well isolated from the external environment and has good sealing performance;

[0019] 2. The present utility model can withstand any pressure applied during detection and has high firmness. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic structural diagram of the all-solid-state battery structure according to the embodiment of the present utility model;

[0022] Figure 2 It is a sectional view of the all-solid-state battery structure according to the embodiment of the present utility model;

[0023] Figure 3 It is a schematic structural diagram of the flexible member according to the embodiment of the present utility model;

[0024] In the figure: 1. Flexible member; 101. Connector; 102. Separator; 2. Upper shell; 3. Lower shell; 4. Sealing ring; 5. First pressing block; 6. Inner shell; 7. Second pressing block; 8. Connecting plate. Detailed Embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.

[0026] Embodiment:

[0027] It should be noted that the terms "first", "second", etc. in the description and claims of the present utility model and the above-mentioned accompanying drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances, so that the embodiments of the present utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" in the embodiments of the present utility model and any of their deformations are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0028] It should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0029] In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In addition, unless otherwise clearly specified and limited, the terms "mounted", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0030] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the horizontal height of the first feature is less than that of the second feature.

[0031] The present utility model provides a technical solution: a all-solid-state battery structure, which includes a sealing component and a core pressing component. The sealing component includes a housing with a hollow interior, and a flexible member 1 is provided on the housing and is in communication with the interior of the housing. The core pressing component is disposed inside the housing and includes an inner shell 6 with a hollow interior and openings at both ends, and a first pressing block 5 and a second pressing block 7. The first pressing block 5 and the second pressing block 7 are respectively installed at both ends of the inner shell 6, and the second pressing block 7 abuts against the flexible member 1.

[0032] Specifically, referring to Figure 1 and Figure 2 , in use, the first pressing block 5 in the core pressing component is first sleeved on the lower end of the inner shell 6 to seal the lower end of the inner shell 6. Then, a positive electrode (negative electrode), a solid electrolyte, and a negative electrode (positive electrode) are sequentially placed into the inner shell 6. Next, the second pressing block 7 is sleeved on the upper end of the inner shell 6, thereby sealing the entire inner shell 6. Finally, the inner shell 6 is placed in the housing and sealed, further improving the sealing performance. In this way, the entire solid-state battery can be well isolated from the external environment. In this way, when the battery is subsequently placed in a testing machine for charge and discharge testing, the testing machine applies pressure to the flexible member 1 on the housing. Since the flexible member 1 abuts against the second pressing block 7, and the second pressing block 7 is in contact with one of the electrodes, it can play a role in pressing the battery core in the inner shell 6. At the same time, during this process, the first pressing block 5 and the second pressing block 7 can well press and fix the substances in the inner shell 6.

[0033] As an alternative embodiment, in some embodiments, the housing includes a detachable upper shell 2 and a lower shell 3, and the upper shell 2 and the lower shell 3 are detachably connected by threads. Among them, the detachable connection method may include but is not limited to threaded connection, snap connection, pin connection, etc. Preferably, in the design of the present housing, the split combination form of the upper shell 2 and the lower shell 3 is adopted, which is convenient for the insertion and removal of the inner shell 6. In addition, the advantage of using threaded connection is that, on the one hand, the structure is simple and the stability is good, and on the other hand, it is convenient for disassembly, improving convenience.

[0034] In the above embodiments, further, a groove is provided at the connection between the upper shell 2 and the lower shell 3, and a sealing ring 4 is arranged in the groove. In this way, it is possible to prevent the substances inside the outer shell from accidentally leaking out from the connection, further improving the sealing performance of the outer shell.

[0035] As an alternative embodiment, in some embodiments, the flexible member 1 includes a joint 101 and a diaphragm 102 surrounding and connected to the outside of the joint 101. The outer shell is provided with a through hole, one end of the joint 101 penetrates through the through hole and extends out of the outer shell, and the other end of the joint 101 abuts against the second pressing block 7. The diaphragm 102 is close to the through hole and is arranged inside the outer shell. Among them, the two ends of the joint 101 can be electrically connected and are used to lead out an electrode during the charge and discharge test. The diaphragm 102 can seal the gap where the joint 101 penetrates through the through hole of the outer shell, further improving the sealing performance of the structure.

[0036] In the above embodiments, further, a connecting plate 8 is further included, and the diaphragm 102 and the outer shell are fixedly connected through the connecting plate 8. In this way, by tightly fixing the diaphragm 102 and the outer shell through the connecting plate 8, it is possible to effectively prevent the diaphragm 102 from accidentally shifting or deforming, thereby ensuring the integrity and stability of the structure and improving the overall safety and reliability.

[0037] As an alternative embodiment, in some embodiments, the materials of the first pressing block 5 and the second pressing block 7 are metals. Exemplarily, copper alloys, aluminum alloys, magnesium alloys, etc. are used.

[0038] As an alternative embodiment, in some embodiments, the material of the inner shell 6 is non-metal. Exemplarily, ceramics are used. On the one hand, it can prevent the positive and negative electrodes in the inner shell 6 from short-circuiting and improve safety. On the other hand, it has good heat resistance and can withstand the heat generated during the charge and discharge test.

[0039] As an alternative embodiment, in some embodiments, the material of the lower shell 3 is metal. Exemplarily, steel, zinc, etc. are used.

[0040] As an alternative embodiment, in some embodiments, the material of the diaphragm 102 is a flexible substance. Exemplarily, it can include but is not limited to silicone, polytetrafluoroethylene, fluororubber, ethylene propylene diene monomer rubber, etc. Among them, the material of the diaphragm 102 can be adjusted according to the actual situation to meet the sealing requirements.

[0041] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0042] The above embodiments are only for illustrating the technical concept and features of the present utility model, and the purpose is to enable those of ordinary skill in the art to understand the content of the present utility model and implement it accordingly, and it cannot be used to limit the protection scope of the present utility model. Any equivalent changes or modifications made according to the essence of the content of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A all-solid-state battery structure, characterized in that, Comprising: A sealing assembly, which includes a housing with a hollow interior, and a flexible member provided on the housing and communicating with the interior of the housing; A core pressing assembly, which is disposed within the housing. The core pressing assembly includes an inner housing with a hollow interior and openings at both ends, as well as a first pressing block and a second pressing block. The first pressing block and the second pressing block are respectively installed at both ends of the inner housing, and the second pressing block abuts against the flexible member.

2. The all-solid-state battery structure according to claim 1, wherein The housing includes a detachable upper housing and a lower housing, and the upper housing and the lower housing are detachably connected by threads.

3. The all-solid-state battery structure according to claim 2, characterized in that, A groove is provided at the connection between the upper housing and the lower housing, and a sealing ring is disposed within the groove.

4. The all-solid-state battery structure according to claim 1, characterized in that, The flexible member includes a joint and a diaphragm circumferentially connected to the outside of the joint. The housing is provided with a through hole, one end of the joint penetrates through the through hole and extends out of the housing, and the other end of the joint abuts against the second pressing block. The diaphragm is close to the through hole and is disposed within the housing.

5. The all-solid-state battery structure according to claim 4, wherein It further includes a connecting plate, and the diaphragm and the housing are fixedly connected by the connecting plate.

6. The all-solid-state battery structure according to claim 1, characterized in that, The first pressing block and the second pressing block are made of metal.

7. The all-solid-state battery structure according to claim 1, wherein The inner housing is made of non-metal.

8. The all-solid-state battery structure according to claim 2, wherein, The lower housing is made of metal.

9. The all-solid-state battery structure according to claim 4, wherein, The diaphragm is made of a flexible material.

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