Aerogel compression stress testing device and testing system
By designing an aerogel compression stress test device with adjustable pockets and multiple pressing tablets of different thicknesses, the problem that existing testing devices cannot be generalized is solved, and multiple projects are achieved compatibility and cost reduction.
Patent Information
- Application Number
- CN202420951149.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-04-30
AI Technical Summary
The existing aerogel compression stress testing devices cannot be universal and need to be designed separately, resulting in redundant and easy to mix and expensive testing devices.
Aerogel compression stress testing device is designed to meet the maximum thickness and minimum thickness requirements of different projects by setting adjustable pockets and multiple compression tablets on the fixture.
The test device is compatible with the testing requirements of different projects, reducing redundant design and cost, and improving usage efficiency and compatibility.
Smart Images
Figure CN222635662U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of battery manufacturing, in particular to an aerogel compression stress testing device and a testing system. Background Art
[0002] During the design and manufacturing process of square power battery packs, a heat-resistant and heat-insulating material, aerogel, is generally required between battery cells. Aerogel has two functions: one is heat-resistant and heat-insulating after thermal runaway of a single battery cell, and the other is to absorb the dimensional tolerances of other components and the expansion force of the battery cell to act as a buffer. Aerogel is a compressible resilient material. The preload range of different module designs is different, so the design thickness and hardness requirements of aerogel are also different. In order to control the hardness of aerogel to meet the preload control requirements of the designed module, when the supplier receives the material, a test device is generally used to detect whether the compression force of the aerogel is within the control requirements when the maximum and minimum thicknesses are compressed. The commonly used test device is a round table fixture with a square recess with maximum compression thickness on one side and a square recess with minimum compression thickness on the other side. Because different projects have different requirements for preload control, the maximum and minimum thicknesses required for compression are also different. This design of a test device can only meet the needs of one project and is not compatible with other projects. The test device needs to be redesigned, which limits the scope of use of the test device. Each project needs to design a dedicated test device, which increases the workload of designers, increases company costs, and makes test devices redundant and easily mixed. Utility Model Content
[0003] The utility model aims to provide an aerogel compression stress testing device and a testing system to solve the problem that the testing devices in the prior art cannot be universal and need to be designed separately, resulting in redundant and easily mixed testing devices and high costs.
[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0005] An aerogel compression stress testing device comprises a jig, wherein a recess is formed on the jig, and at least one pressing sheet is arranged in the recess.
[0006] The aerogel compression stress testing device can meet the different maximum thickness and minimum thickness required by different projects by adding or reducing the compression sheet into the recess on the fixture. In this way, the aerogel compression stress testing device plus a series of compression sheets with different thicknesses can meet the different thickness testing needs of different projects, and has high compatibility and low use cost.
[0007] As a preferred embodiment of the present invention, the shape of the jig is cylindrical, and the recess is located at the center of the upper surface of the jig. Since a relatively large pressure is used to squeeze the aerogel compression stress testing device and the aerogel therein in the aerogel compression stress testing experiment, in order to ensure that the aerogel compression stress testing device does not deform during the test experiment, thereby affecting the accuracy of the test results.
[0008] As a preferred embodiment of the present invention, the cross-sectional shape of the recess is rectangular or circular, and the shape of the pressing sheet is a corresponding rectangle or circle. Setting the cross-sectional shape of the recess or the shape of the pressing sheet to a rectangle or a circle enables better force to be applied when pressure is applied during the test experiment.
[0009] As a preferred solution of the utility model, when the cross section of the concave is rectangular, the size is set to 50 mm in length and 50 mm in width; or when the cross section of the concave is circular, the size is set to 50 mm in diameter. When the cross section of the concave is rectangular, the size is set to 50 mm in length and 50 mm in width, and when the cross section of the concave is circular, the size is set to 50 mm in diameter.
[0010] As a preferred solution of the utility model, the depth of the recess is h, 5mm≤h≤20mm. In order to ensure that the aerogel compression stress testing device can meet the different maximum thickness and minimum thickness required by different projects, the depth of the recess is set to h, 5mm≤h≤20mm.
[0011] As a preferred embodiment of the present invention, the thickness of the pressed sheet is 0.5 mm, 1 mm, 2 mm, 3 mm, 4 mm or 5 mm. By combining a series of pressed sheets with different thicknesses, the aerogel compression stress testing device can meet the different maximum thickness and minimum thickness required by different projects.
[0012] An aerogel compression stress testing system comprises any one of the above-mentioned aerogel compression stress testing devices, wherein aerogel is arranged in the cavity.
[0013] The aerogel compression stress testing system arranges at least one pressing sheet in the cavity so that the depth of the cavity just meets the experimental requirements, and then the aerogel compression stress testing experiment can be carried out.
[0014] As a preferred solution of the utility model, the pressing sheet can be selected to be a plurality of pressing sheets of the same or different thicknesses. Since different projects require different maximum thicknesses and minimum thicknesses, and the depth of the recess provided on the fixture is relatively fixed, the pressing sheet can be selected to be a plurality of pressing sheets of the same or different thicknesses to meet the different thickness testing requirements of different projects, thereby further improving the compatibility of the aerogel compression stress testing device and reducing the cost of use.
[0015] As a preferred solution of the utility model, the sum of the thickness of the aerogel and the thickness of the pressed sheet is greater than the depth of the recess. Since the test experiment is carried out by extruding the pressed sheet, such a setting is convenient for controlling the deformation amount of the aerogel.
[0016] As a preferred solution of the utility model, a pressure sensor is provided on the jig, and the setting of the pressure sensor can measure the specific pressure applied in the test experiment, so as to further calculate and analyze some physical values of the aerogel.
[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:
[0018] The aerogel compression stress testing device and testing system can meet the different maximum thickness and minimum thickness required by different projects by adding or reducing the pressing sheet into the recess on the frustum jig. In this way, the aerogel compression stress testing device plus a series of pressing sheets with different thicknesses can meet the different thickness testing needs of different projects, and has high compatibility and low use cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a structural schematic diagram of the utility model.
[0020] Figure 2 It is a cross-sectional schematic diagram of the utility model.
[0021] Markings in the figure: 1- jig, 2- cavity, 3- tablet, 4- aerogel. DETAILED DESCRIPTION
[0022] The utility model is described in detail below in conjunction with the accompanying drawings.
[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0024] Example 1
[0025] like Figure 1 , Figure 2 As shown, an aerogel compression stress testing device comprises a jig 1 , wherein the jig 1 is provided with a cavity 2 , and at least one pressing sheet 3 is arranged in the cavity 2 .
[0026] Those skilled in the art can understand that the aerogel compression stress testing device can meet the different maximum thickness and minimum thickness required by different projects by adding or reducing the pressing sheet 3 into the recess 2 on the fixture. In this way, the aerogel compression stress testing device plus a series of pressing sheets 3 with different thicknesses can meet the different thickness testing needs of different projects, and has high compatibility and low use cost.
[0027] In a preferred embodiment, the shape of the jig 1 is cylindrical, and the recess 2 is located at the center of the jig 1 .
[0028] Those skilled in the art will understand that, since a relatively large pressure is used to squeeze the aerogel compression stress testing device and the aerogel 4 therein in the aerogel compression stress testing experiment, in order to ensure that the aerogel compression stress testing device does not deform during the testing experiment, thereby affecting the accuracy of the testing experiment results.
[0029] In a preferred embodiment, the cross-sectional shape of the recess 2 is rectangular or circular, and the shape of the pressing sheet 3 is rectangular or circular.
[0030] Those skilled in the art will appreciate that setting the cross-sectional shape of the recess 2 or the shape of the pressing sheet 3 to be rectangular or circular enables better force to be applied during the test experiment.
[0031] In a preferred embodiment, when the cross section of the recess 2 is rectangular, the size is set to be 50 mm in length and 50 mm in width; or when the cross section of the recess 2 is circular, the size is set to be 50 mm in diameter.
[0032] Those skilled in the art can understand that when the cross-sectional shape of the recess 2 is rectangular, the size is set to 50 mm in length and 50 mm in width, and when the cross-sectional shape of the recess 2 is circular, the size is set to 50 mm in diameter.
[0033] In a preferred embodiment, the depth of the recess 2 is h, 5mm≤h≤20mm.
[0034] Those skilled in the art can understand that in order to ensure that the aerogel compression stress testing device can meet the different maximum thickness and minimum thickness required by different projects, the depth of the recess 2 is set to h, 5mm≤h≤20mm.
[0035] In a preferred embodiment, the thickness of the pressed sheet 3 is 0.5 mm, 1 mm, 2 mm, 3 mm, 4 mm or 5 mm.
[0036] Those skilled in the art will appreciate that by combining a series of pressed sheets 3 with different thicknesses, the aerogel compression stress testing device can meet the different maximum thicknesses and minimum thicknesses required by different projects.
[0037] Example 2
[0038] like Figure 1 , Figure 2 As shown, an aerogel compression stress testing system includes an aerogel compression stress testing device, and an aerogel 4 is arranged in the cavity 2.
[0039] Those skilled in the art can understand that the aerogel compression stress testing system, by arranging at least one pressing sheet 3 in the recess 2, makes the depth of the recess 2 just meet the deformation amount required for the experiment, and then the aerogel compression stress testing experiment can be carried out.
[0040] In a preferred embodiment, the pressing sheet 3 can be selected to be a plurality of pressing sheets 3 having the same or different thicknesses.
[0041] Those skilled in the art can understand that, since different projects require different maximum thicknesses and minimum thicknesses, and the depth of the recess 2 provided on the fixture is relatively fixed, the pressing sheet 3 can be selected to have multiple same or different thicknesses to meet the different thickness testing requirements of different projects, thereby further improving the compatibility of the aerogel compression stress testing device and reducing the cost of use.
[0042] In a preferred embodiment, the sum of the thickness of the aerogel 4 and the thickness of the pressed sheet 3 is greater than the depth of the recess 2 .
[0043] Those skilled in the art can understand that, since the test experiment is performed by extruding the pressed sheet 3 , such a setting is convenient for controlling the deformation amount of the aerogel 4 .
[0044] In a preferred embodiment, a pressure sensor is provided on the tool 1 .
[0045] Those skilled in the art will appreciate that the arrangement of the pressure sensor can measure the specific pressure applied in the test experiment, so as to further calculate and analyze some physical values of the aerogel 4.
[0046] Example 3
[0047] like Figure 1 , Figure 2 As shown, a specific method of using an aerogel compression stress testing device.
[0048] For example, the depth of the recess 2 is set to 10mm, and the initial thickness of the aerogel 4 sample is 3mm. Now it is necessary to test the compression of the aerogel 4 sample from 3mm to 2mm. This requires padding 2 4mm thick pressing sheets 3 in the recess 2, and placing the aerogel 4 sample in the truncated cone groove. At this time, the aerogel 4 sample is 1mm thicker than the plane of the jig 1. When the compression device compresses the aerogel 4 sample to the plane of the jig 1, the aerogel 4 sample is compressed to a thickness of 2mm. Whether the force value on the recording device is greater than 2000N can be used to determine whether the aerogel strain compression meets the specification requirements.
[0049] In the description of the specific embodiments of the present invention, unless otherwise specified, the terms indicating the orientation or position relationship such as "upper", "lower", "left", "right", "center", "inside", "outside", etc. are all expressions based on the orientation or position relationship shown in the drawings, or the orientation or position relationship of the product / equipment / device of the utility model when it is usually used. These terms of orientation or position relationship are only for the convenience of describing the scheme of the utility model or simplifying the description in the specific embodiments, so that technicians can quickly understand the scheme, rather than indicating or implying that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation on the present invention.
[0050] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simplified to mean that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the solution of the utility model.
[0051] In addition, the expressions “first”, “second”, “third”, etc. that appear in the terms are merely descriptions used to distinguish the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.
[0052] In addition, in the description of the embodiments of the present invention, "several", "multiple" and "a number" represent at least 2. It can be any number such as 2, 3, 4, 5, 6, 7, 8, 9, and even more than 9.
[0053] In addition, in the description of the technical solution of the utility model, unless otherwise clearly specified / defined / restricted, the terms "set", "install", "connect", "connected", "provided with", "laid", and "arranged" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, and can be welding, riveting, bolting, threading, and other commonly used connection means in the field. This connection can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two components.
[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. An aerogel compression stress testing device, comprising a compression device, wherein the compression device is used to compress an aerogel sample, characterized in that: The invention comprises a metallurgical tool (1), wherein a recess (2) is formed on the metallurgical tool (1), and at least one pressing sheet (3) is arranged in the recess (2).
2. The aerogel compressive stress testing device according to claim 1, characterized in that: The shape of the jig (1) is cylindrical, and the recess (2) is located at the center of the upper surface of the jig (1).
3. The aerogel compressive stress testing device according to claim 1, characterized in that: The cross-sectional shape of the recess (2) is rectangular or circular, and the shape of the pressing sheet (3) is a corresponding rectangular or circular shape.
4. The aerogel compressive stress testing device according to claim 3, characterized in that: When the cross section of the recess (2) is rectangular, the size is set to be 50 mm in length and 50 mm in width; or when the cross section of the recess (2) is circular, the size is set to be 50 mm in diameter.
5. The aerogel compressive stress testing device according to claim 1, characterized in that: The depth of the recess (2) is h, 5mm≤h≤20mm.
6. The aerogel compressive stress testing device according to claim 1, characterized in that: The thickness of the pressed sheet (3) is 0.5 mm, 1 mm, 2 mm, 3 mm, 4 mm or 5 mm.
7. An aerogel compression stress testing system, characterized in that: It comprises an aerogel compression stress testing device as claimed in any one of claims 1 to 6, wherein an aerogel (4) is arranged in the cavity (2).
8. The aerogel compressive stress testing system according to claim 7, characterized in that: The system comprises a plurality of pressed sheets (3) of the same or different thicknesses.
9. The aerogel compressive stress testing system according to claim 7, characterized in that: The sum of the thickness of the aerogel (4) and the thickness of the pressed sheet (3) is greater than the depth of the cavity (2).