Device for preparing all-solid-state battery and all-solid-state battery

Abstract

The utility model relates to the technical field of all-solid-state batteries, and provides a device for all-solid-state battery preparation and an all-solid-state battery, the device for all-solid-state battery preparation comprises a base, a mold mechanism and a pressurizing mechanism, the mold mechanism is arranged on the base, the mold mechanism is provided with a loading groove, and the pressurizing mechanism is arranged on the loading groove. A separation part is arranged in the loading groove, the loading groove is suitable for loading a sample, and the separation part is suitable for forming a separation groove in the sample; and the pressurizing mechanism is connected to the base, and the pressurizing mechanism is suitable for pressurizing the mold mechanism so as to press the powder loaded in the loading groove. According to the invention, the tested solid-state electrode can be easily disassembled into a plurality of parts, each part comprises all electrode material combination structures, and the solid-state electrode is suitable for subsequent physicochemical property characterization experiments.

Description

Technical Field

[0001] This utility model relates to the field of all-solid-state battery technology, and in particular to an apparatus for preparing all-solid-state batteries and an all-solid-state battery. Background Technology

[0002] All-solid-state batteries consist of three parts: a pure solid positive electrode, a negative electrode, and an electrolyte, arranged in a specific structure. In solid-state battery technology research, a common experimental method is to press the positive and negative electrode active materials and the solid electrolyte material into a solid-state battery in a mold, and then test its performance through charge-discharge cycles. The contact between powder particles in a solid-state battery has a significant impact on charge conduction, and the performance of a solid-state battery in performance testing is also significantly affected by the pressure applied to the powder particles during battery manufacturing and testing.

[0003] Since the application of solid-state batteries is still mostly in the experimental stage, the number, thickness, composition, and bonding methods of the electrode and electrolyte layers in batteries vary greatly, and there are currently no particularly representative preparation and physicochemical characterization methods. Further physicochemical characterization of the tested solid-state battery materials and interfaces usually requires disassembling the solid-state battery. However, for mold-type solid-state batteries, the electrodes are brittle after the external pressure is released from the mold, and fragmentation often occurs during sampling for physicochemical characterization, making it difficult to remove parts or sections of the electrode in the expected shape, size, and separation direction for testing. If multiple parallel samples with the same or similar formulations and pressure conditions are prepared simultaneously, the testing cost increases significantly, and the consistency of the tests is also insufficient because the internal pressure conditions of the solid-state battery materials are not strictly identical between parallel samples.

[0004] In related technical fields, the consistency of solid-state battery testing can be improved by modifying the design of the pressurization mold. However, this mainly controls the consistency of solid-state batteries during the charging and discharging process, but cannot control the consistency of the sampling process after the charging and discharging process. Utility Model Content

[0005] This invention provides an apparatus and an all-solid-state battery for the preparation of solid-state batteries, which solves the problem of inconsistent sampling process after the charging and discharging process of solid-state batteries in the prior art. It makes it easier to disassemble the solid-state electrode after testing into multiple parts, each of which contains the complete electrode material combination structure, and is suitable for subsequent physicochemical property characterization experiments.

[0006] This utility model provides an apparatus for the fabrication of all-solid-state batteries, comprising:

[0007] Base;

[0008] A mold mechanism is provided on the base. The mold mechanism has a loading groove and a partition in the loading groove. The loading groove is suitable for loading a sample, and the partition is suitable for forming a partition groove on the sample.

[0009] A pressurizing mechanism is connected to the base and is adapted to pressurize the mold mechanism to compress the powder loaded in the loading tank.

[0010] According to the present invention, an apparatus for the fabrication of all-solid-state batteries is provided, wherein the mold mechanism includes a separator disposed on the partition portion, the separator being adapted to define the bottom space of the loading groove, and the various regions of the loading groove remain connected after being divided.

[0011] According to the present invention, an apparatus for the preparation of all-solid-state batteries is provided, wherein the mold mechanism includes a pressure-bearing component, the pressure-bearing component is detachably mounted on the base, and the loading groove is formed on the pressure-bearing component.

[0012] According to the present invention, an apparatus for preparing all-solid-state batteries is provided, wherein the mold mechanism further includes a clamping member, the clamping member is connected to the pressurizing mechanism, the clamping member is disposed corresponding to the loading groove, and the pressurizing mechanism is used to drive the clamping member to press the sample in the loading groove.

[0013] According to the present invention, an apparatus for the preparation of all-solid-state batteries is provided, wherein the clamping member has a protrusion on the side facing the pressure bearing member, and the protrusion is adapted to the shape of the loading groove.

[0014] According to the present invention, an apparatus for the fabrication of all-solid-state batteries is provided, wherein the pressurizing mechanism is a hydraulic cylinder, and the hydraulic rod of the hydraulic cylinder is connected to the clamping member.

[0015] According to the present invention, an apparatus for the fabrication of all-solid-state batteries is provided, wherein the mold mechanism is made of insulating material;

[0016] Alternatively, the outer surface of the mold mechanism that contacts the sample is coated with an insulating material layer.

[0017] According to the present invention, an apparatus for the fabrication of all-solid-state batteries is provided, wherein the base includes an upper plate, a lower plate, and a connecting column, the upper plate and the lower plate are spaced apart, the connecting column is connected between the upper plate and the lower plate, the mold mechanism is installed on the side of the lower plate facing the upper plate, the loading groove is opened facing the upper plate, and the pressurizing mechanism is installed on the upper plate.

[0018] According to the present invention, an apparatus for the preparation of all-solid-state batteries is provided, wherein the pressure-bearing component is provided with a temperature control component, which is suitable for temperature control during the preparation or charging and discharging process of all-solid-state batteries.

[0019] This invention also provides an all-solid-state battery, which is obtained by means of the above-described apparatus for preparing all-solid-state batteries.

[0020] The apparatus for preparing all-solid-state batteries provided by this invention has a partition in the loading tank. After pressing, the partition will pre-form partition lines or partition grooves on the all-solid-state battery electrode, so that it can be easily decomposed into multiple parts containing complete components of the all-solid-state battery during disassembly, instead of randomly breaking apart. This facilitates subsequent physicochemical characterization experiments and improves the success rate of the experiment. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of an embodiment of the apparatus for fabricating all-solid-state batteries provided by this utility model.

[0023] Figure 2 yes Figure 1 A schematic diagram of the middle mold mechanism.

[0024] Figure label:

[0025] 10. Apparatus for the fabrication of all-solid-state batteries;

[0026] 100. Base; 110. Upper plate; 120. Lower plate; 130. Connecting column;

[0027] 200. Mold mechanism; 210. Separator; 220. Pressure bearing component; 221. Loading groove; 230. Clamping component; 231. Protrusion;

[0028] 300. Pressurization mechanism; 310. Hydraulic cylinder; 320. Hydraulic rod. Detailed Implementation

[0029] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0030] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this 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.

[0031] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0032] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0034] The following is combined with Figures 1 to 2The present invention will provide a detailed description of the apparatus for preparing all-solid-state batteries and the all-solid-state batteries provided by the embodiments of the present invention through specific implementation methods and application scenarios.

[0035] In the embodiments of the utility model, reference is made to... Figures 1 to 2 The apparatus 10 for preparing all-solid-state batteries includes a base 100, a mold mechanism 200, and a pressurizing mechanism 300. The mold mechanism 200 is disposed on the base 100 and has a loading groove 221. The loading groove 221 is provided with a partition. The loading groove 221 is suitable for loading a sample, and the partition is suitable for forming a partition groove on the sample. The pressurizing mechanism 300 is connected to the base 100 and is suitable for pressurizing the mold mechanism 200 to compress the powder loaded in the loading groove 221.

[0036] The base 100 serves as the foundation of the entire device, providing a stable support platform for the mold mechanism 200 and the pressurizing mechanism 300. It ensures that the relative positions of the various components remain unchanged during the preparation process, preventing preparation errors caused by vibration or instability.

[0037] The loading groove 221 in the mold mechanism 200 is suitable for filling powder material samples. By precisely designing the geometry of the loading groove 221, solid-state battery electrodes that meet the requirements can be fabricated.

[0038] During the powder sample pressing process, the separator can form a separating groove on the sample surface. The presence of the separating groove allows the electrode to break along a predetermined path during disassembly, thereby improving the success rate of disassembly and the integrity of the electrode.

[0039] The pressurizing mechanism 300 applies pressure to the powder sample in the mold mechanism 200, compressing it into a dense solid electrode. The pressurizing mechanism 300 can adjust the pressure and application time as needed, which helps optimize the preparation process and improve the electrode's performance and quality.

[0040] The power source for the pressurizing mechanism 300 can be a hydraulic cylinder 310, a pneumatic cylinder, or a servo motor, etc. These power sources have different characteristics and applicable ranges, and can be selected according to specific needs.

[0041] The presence of the separator grooves allows the electrode to break along a predetermined path during disassembly, avoiding random fragmentation. This helps maintain the integrity of the electrode and facilitates subsequent physicochemical characterization experiments. Because the disassembly process is more orderly and controllable, the success rate of the experiment can be significantly improved. At the same time, the intact electrode components also ensure the accuracy and reliability of the experimental results.

[0042] This application provides a separator within the loading groove 221. After pressing, the separator will pre-form separator lines or separator grooves on the all-solid-state battery electrode, making it easy to decompose into multiple parts containing complete components of the all-solid-state battery during disassembly, rather than randomly breaking apart. This facilitates subsequent physicochemical characterization experiments and improves the success rate of the experiments.

[0043] Reference Figure 2 In some embodiments, the mold mechanism 200 includes a separator 210 disposed on the separator, the separator 210 being adapted to define the bottom space of the loading slot 221, and the various regions of the loading slot 221 remaining connected after being divided.

[0044] Understandably, the separator 210 is disposed on the separator portion, located at the bottom of the loading groove 221, and at least partially protrudes from the bottom surface of the loading groove 221. The separator 210 is used to define the space at the bottom of the loading groove 221, which helps the separator portion to accurately form a separator groove during the subsequent pressing process.

[0045] The separator 210 divides the loading slot 221 into multiple regions, but these regions remain connected at the bottom. This achieves regional division while ensuring the integrity of the electrode. During subsequent disassembly, the electrode can be divided into multiple parts along the separator, but these parts remain interconnected at the bottom, which helps maintain the integrity and mechanical properties of the electrode.

[0046] In some embodiments, the separator 210 may also be integrally formed on the bottom of the loading groove 221, which is not specifically limited here.

[0047] In some embodiments, the separator 210 may be configured in different shapes as needed and then installed at the bottom of the loading slot 221, such as a cross shape or a well shape, etc., without special limitation.

[0048] In some embodiments, the height of the separator 210 protruding into the loading groove 221 is variable. That is, during battery charging and discharging, the height of the separator 210 protruding into the loading groove 221 is changed by adjusting the pressure applied to the separator 210. In this way, the influence of the separator 210 on the conductivity of the electrolyte material during battery charging and discharging can be reduced.

[0049] Reference Figure 2 In some embodiments, the mold mechanism 200 includes a pressure-bearing member 220, which is detachably mounted on the base 100, and a loading groove 221 is formed on the pressure-bearing member 220.

[0050] Understandably, the pressure-bearing component 220 is detachably mounted on the base 100, which facilitates the use of different pressure-bearing components 220 for imaging. It also allows for the easy removal of the mold mechanism 200, along with its internally pressed all-solid-state electrodes, after sample pressing, and subsequent planned charge-discharge tests under specified temperature and pressure conditions. This enhances the flexibility of the mold mechanism 200.

[0051] The pressure-bearing component 220 is provided with a loading groove 221, which can ensure that during the pressurization process, the pressure can be evenly transmitted to the powder material in the loading groove 221, thereby forming a dense and uniform electrode material.

[0052] Reference Figure 1 and Figure 2 In some embodiments, the mold mechanism 200 further includes a clamping member 230, which is connected to the pressurizing mechanism 300. The clamping member 230 is set in relation to the loading groove 221, and the pressurizing mechanism 300 presses the sample in the loading groove 221 by actuating the clamping member 230.

[0053] It is understood that the clamping member 230 is connected to the pressurizing mechanism 300, and the pressurizing mechanism 300 pressurizes the sample in the loading tank 221 by controlling the movement of the clamping member 230. The position of the clamping member 230 corresponds to the loading tank 221, ensuring that pressure can be effectively applied to the sample in the loading tank 221 during the pressurization process. Specifically, the pressurizing mechanism 300 pressurizes the sample in the loading tank 221 by driving the clamping member 230 to move up and down.

[0054] Reference Figure 2 In some embodiments, the clamping member 230 has a protrusion 231 on the side facing the pressure bearing member 220, and the protrusion 231 is adapted to the shape of the loading groove 221.

[0055] Understandably, in this embodiment, the presence of the protrusion 231 allows the clamping member 230 to more accurately align with the sample in the loading groove 221 and apply pressure when moving downwards. Simultaneously, the shape of the protrusion 231 matches the shape of the loading groove 221, ensuring that during the pressing process, the protrusion 231 completely conforms to the contour of the loading groove 221, avoiding situations where the local pressure is too high or too low. Thus, by adapting the shape of the protrusion 231 to the loading groove 221, uniformity and consistency during the pressing process are ensured, improving the pressing quality of the all-solid-state battery electrode.

[0056] In some embodiments, the end face of the protrusion 231 facing the loading groove 221 is provided with a separator 210 corresponding to the bottom of the loading groove 221, so as to improve the success rate of disassembling the obtained all-solid-state battery into multiple pieces.

[0057] Reference Figure 1 In some embodiments, the pressurizing mechanism 300 is a hydraulic cylinder 310, and the hydraulic rod 320 of the hydraulic cylinder 310 is connected to the clamping member 230.

[0058] Understandably, the hydraulic rod 320 of the hydraulic cylinder 310 is directly connected to the clamping member 230, and the movement of the clamping member 230 is controlled by the up-and-down movement of the hydraulic rod 320. The hydraulic cylinder 310 can provide stable and adjustable pressure, ensuring that pressure is applied evenly to the sample in the loading groove 221 during the pressing process.

[0059] Specifically, when it is necessary to press the sample in the loading tank 221, the hydraulic cylinder 310 drives the clamping member 230 downward through the hydraulic rod 320 until it contacts the sample. The hydraulic system controls the pressure applied by the clamping member 230 by adjusting the pressure of the hydraulic oil to ensure uniform pressure during the pressing process. After pressing is completed, the hydraulic system releases the pressure, and the hydraulic rod 320 drives the clamping member 230 upward to complete the depressurization process and prepare for the next pressing.

[0060] Of course, in other embodiments, the pressurizing mechanism 300 may also be other power mechanisms such as cylinders or motors, and no special limitation is made here.

[0061] In some embodiments, the mold mechanism 200 is made of an insulating material; or, the outer surface of the mold mechanism 200 that contacts the sample is coated with an insulating material layer.

[0062] It is understood that by making the mold mechanism 200 with insulating material or coating the outer surface of the mold mechanism 200 in contact with the sample with an insulating material layer, this embodiment can effectively prevent current leakage and ensure that no electrical interference is caused to the electrodes during charge and discharge testing. This improves the stability and safety of the entire mold mechanism 200 in the electrical environment.

[0063] Optionally, the insulating material layer includes, but is not limited to, polytetrafluoroethylene, nylon, and polyetheretherketone.

[0064] Reference Figure 1 In some embodiments, the base 100 includes an upper plate 110, a lower plate 120, and a connecting column 130. The upper plate 110 and the lower plate 120 are spaced apart, and the connecting column 130 is connected between the upper plate 110 and the lower plate 120. The mold mechanism 200 is installed on the side of the lower plate 120 facing the upper plate 110, the loading groove 221 is opened facing the upper plate 110, and the pressurizing mechanism 300 is installed on the upper plate 110.

[0065] Understandably, in this embodiment, the upper plate 110 serves as a mounting platform for the pressurizing mechanism 300 and provides top support for the entire device. This ensures the stability of the pressurizing mechanism 300 and provides sufficient room for movement for the clamping member 230.

[0066] The lower plate 120 serves as a mounting platform for the mold mechanism 200 and provides bottom support for the entire device. It ensures the stability of the mold mechanism 200 and provides a mounting surface for the mold mechanism 200.

[0067] The connecting column 130 connects the upper plate 110 and the lower plate 120, maintaining the distance between them. Maintaining the distance between the upper plate 110 and the lower plate 120 through the connecting column 130 enhances the structural stability of the entire device.

[0068] Specifically, the mold mechanism 200 is installed on the side of the lower plate 120 facing the upper plate 110, facilitating docking with the pressurizing mechanism 300. This ensures that the clamping member 230 can smoothly dock with the loading slot 221 in the mold mechanism 200 for pressurization. The loading slot 221 is opened facing the upper plate 110, allowing the pressurizing mechanism 300 to press the sample within the loading slot 221 using the clamping member 230. This ensures that the sample within the loading slot 221 is uniformly stressed, forming a dense all-solid-state battery electrode. The pressurizing mechanism 300 is installed on the upper plate 110 and drives the clamping member 230 via a hydraulic cylinder 310 or other form of pressurizing mechanism 300. This ensures that the pressurizing mechanism 300 can apply pressure vertically downwards, achieving uniform pressing of the sample within the loading slot 221.

[0069] In some embodiments, the pressure-bearing component 220 is provided with a temperature control component, which is suitable for temperature control during the fabrication or charging and discharging process of all-solid-state batteries.

[0070] It is understood that temperature control components are used for temperature control during the hot pressing process. In this embodiment, by setting a temperature control component on the pressure-bearing component 220, the temperature within the loading groove 221 can be controlled more effectively, ensuring that the temperature conditions of the all-solid-state battery electrodes meet the requirements during the hot pressing process and improving the reliability of the device.

[0071] Specifically, the temperature control component is an electric heating component, and the temperature control range is 0~150℃.

[0072] This utility model also provides an all-solid-state battery, which is produced by the above-described apparatus 10 for preparing all-solid-state batteries. The specific structure of the apparatus 10 for preparing all-solid-state batteries is described in the above-described embodiments. It is understood that since the all-solid-state battery is produced by the above-described apparatus 10 for preparing all-solid-state batteries, the embodiments of this all-solid-state battery include all the technical solutions of all embodiments of the apparatus 10 for preparing all-solid-state batteries, and the technical effects achieved are exactly the same, so they will not be described again here.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An apparatus for fabricating all-solid-state batteries, characterized in that, include: Base; A mold mechanism is provided on the base. The mold mechanism has a loading groove and a partition in the loading groove. The loading groove is suitable for loading a sample, and the partition is suitable for forming a partition groove on the sample. A pressurizing mechanism is connected to the base and is adapted to pressurize the mold mechanism to compress the powder loaded in the loading tank.

2. The apparatus for fabricating all-solid-state batteries according to claim 1, characterized in that, The mold mechanism includes a separator disposed on the partition portion. The separator is adapted to define the bottom space of the loading slot, and the various regions of the loading slot remain connected after being divided.

3. The apparatus for fabricating all-solid-state batteries according to claim 1, characterized in that, The mold mechanism includes a pressure-bearing component, which is detachably mounted on the base, and the loading groove is formed on the pressure-bearing component.

4. The apparatus for fabricating all-solid-state batteries according to claim 3, characterized in that, The mold mechanism also includes a clamping component, which is connected to the pressurizing mechanism. The clamping component is arranged corresponding to the loading groove, and the pressurizing mechanism is used to drive the clamping component to press the sample in the loading groove.

5. The apparatus for fabricating all-solid-state batteries according to claim 4, characterized in that, The clamping member has a protrusion on the side facing the pressure bearing member, and the protrusion is adapted to the shape of the loading groove.

6. The apparatus for fabricating all-solid-state batteries according to claim 4, characterized in that, The pressurizing mechanism is a hydraulic cylinder, and the hydraulic rod of the hydraulic cylinder is connected to the clamping component.

7. The apparatus for fabricating all-solid-state batteries according to any one of claims 1-6, characterized in that, The mold mechanism is made of insulating material; Alternatively, the outer surface of the mold mechanism that contacts the sample is coated with an insulating material layer.

8. The apparatus for fabricating all-solid-state batteries according to any one of claims 1-6, characterized in that, The base includes an upper plate, a lower plate, and a connecting column. The upper plate and the lower plate are spaced apart. The connecting column connects the upper plate and the lower plate. The mold mechanism is installed on the side of the lower plate facing the upper plate. The loading groove is opened facing the upper plate. The pressurizing mechanism is installed on the upper plate.

9. The apparatus for fabricating all-solid-state batteries according to claim 3, characterized in that, The pressure-bearing component is equipped with a temperature control component, which is suitable for temperature control during the preparation or charging and discharging process of all-solid-state batteries.

10. An all-solid-state battery, characterized in that, The all-solid-state battery is produced by the apparatus for preparing all-solid-state batteries as described in any one of claims 1-9.

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