Hydraulic tester for expansive force performance of solid-state battery

Abstract

The utility model provides a hydraulic tester for expansibility performance of a solid-state battery, which comprises a base, four upright posts are fixed at four corners of the top of the base, an upper cross beam is fixed at the tops of the upright posts, a loading connecting rod is arranged at the bottom of the center of the upper cross beam, and an upper pressure plate is fixed at the bottom of the loading connecting rod. A lower pressing disc is arranged at the position, corresponding to the upper pressing disc, of the top of the base, a piston guide plate is fixed to the surface of the middle of the loading connecting rod, the four stand columns are sleeved with the piston guide plate in a sliding mode, deformation measuring instruments are installed on the two sides of the piston guide plate, and the bottoms of the deformation measuring instruments are fixedly connected with the lower pressing disc. The base can be conveniently fixed on a table top through the screw hole and the mute pad on the base, noise generated during working is reduced, compared with the prior art, the control system controls the hydraulic oil cylinder piston to move, the deformation meter measures sample deformation, so that a compression pressure maintaining test of a sample is completed, and the compression pressure maintaining device has sufficient rigidity, stable operation and high efficiency.

Description

Technical Field

[0001] This utility model relates to the field of performance testing technology, specifically a hydraulic tester for the expansion force performance of solid-state batteries. Background Technology

[0002] Solid-state batteries are a type of battery technology. Unlike the commonly used lithium-ion and lithium-ion polymer batteries, solid-state batteries use solid electrodes and solid electrolytes. After production, solid-state batteries need to be tested for their expansion force performance. Solid-state battery expansion force testers are a new generation of testing equipment suitable for battery manufacturers, research institutes, quality inspection agencies, and other similar institutions.

[0003] Existing common performance testing instruments, such as pressure testing instruments, cannot meet the testing requirements of sustained loading and high testing accuracy for solid-state batteries, thus affecting the test results of solid-state battery expansion force performance. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a hydraulic tester for the expansion force performance of solid-state batteries, thereby solving the problems mentioned in the background. This invention features a novel structure, which controls the movement of the hydraulic cylinder piston through a control system, and uses a deformation measuring instrument to measure the deformation of the sample to complete the compression and pressure holding test of the sample. It has sufficient rigidity, stable operation, and high efficiency.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a hydraulic tester for the expansion force performance of solid-state batteries, comprising a base, four columns fixed at the four corners of the top of the base, and an upper crossbeam fixed at the top of the columns. A loading connecting rod is provided at the bottom of the center of the upper crossbeam, an upper pressure plate is fixed at the bottom of the loading connecting rod, and a lower pressure plate is provided at the top of the base corresponding to the position of the upper pressure plate. A piston guide plate is fixed on the middle surface of the loading connecting rod, and the piston guide plate is slidably sleeved on the four columns. Deformation measuring instruments are installed on both sides of the piston guide plate, and the bottom of the deformation measuring instruments is fixedly connected to the lower pressure plate.

[0006] Furthermore, a force sensor is fixedly installed at the bottom center of the piston guide plate, and the force sensor is sleeved around the loading link.

[0007] Furthermore, a hydraulic cylinder is fixed to the top of the upper crossbeam, and the loading connecting rod is fixedly connected to the telescopic end of the hydraulic cylinder.

[0008] Furthermore, a plate seat is fixed to the bottom of the base corresponding to the bottom of the pressure plate, and the pressure plate is fixed to the top of the plate seat.

[0009] Furthermore, a high and low temperature environment test chamber is assembled on the top of the base, and the bottom of the high and low temperature environment test chamber is provided with a socket corresponding to the deformation measuring instrument, the loading rod and the lower pressure plate.

[0010] Furthermore, the bottom of the high and low temperature environment test chamber is fixed on the base, and an observation window is provided on the middle surface of the high and low temperature environment test chamber.

[0011] Furthermore, four sound-absorbing pads are fixed to the bottom of the base, and screw holes for fixing are provided at the four corners of the base.

[0012] Furthermore, the piston guide plate is fixed with sliding sleeves at its four corners, and the sliding sleeves of the piston guide plate are slidably sleeved on the column.

[0013] The beneficial effects of this utility model are:

[0014] This invention uses a high and low temperature environment test chamber that is fixed to the base by splicing the front and rear sides to enclose the upper and lower pressure plates. This allows for the simulation of high and low temperature environments when extruding solid-state batteries. Temperature regulation elements are installed inside the high and low temperature environment test chamber to simulate the effects of different environments on the performance of solid-state batteries.

[0015] This invention uses screw holes and sound-dampening pads on the base to easily fix the base to the desktop, while reducing the noise generated during operation.

[0016] Compared with the prior art, this utility model controls the movement of the hydraulic cylinder piston through the control system, and the deformation measuring instrument measures the deformation of the sample to complete the compression and pressure holding test of the sample. It has the advantages of sufficient rigidity, stable operation and high efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall front structure of a hydraulic tester for the expansion force performance of solid-state batteries according to the present invention.

[0018] Figure 2 This is a side view of the overall structure of a hydraulic tester for the expansion force performance of solid-state batteries according to the present invention.

[0019] Figure 3 This is a schematic diagram of the installation of a high and low temperature environment test chamber for a hydraulic tester for the expansion force performance of solid-state batteries according to this utility model.

[0020] Figure 4 This is a schematic diagram of the bottom structure of the base of a hydraulic tester for the expansion force performance of solid-state batteries according to the present invention.

[0021] Figure 5This is a top view of the upper crossbeam of a hydraulic tester for the expansion force performance of solid-state batteries according to this utility model.

[0022] In the diagram: 1. Base; 11. Column; 12. Upper crossbeam; 13. Soundproof pad; 2. Hydraulic cylinder; 21. Loading linkage; 22. Upper pressure plate; 3. Piston guide plate; 31. Force sensor; 4. Deformation measuring instrument; 5. Plate base; 51. Lower pressure plate; 6. High and low temperature environment test chamber. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] Please see Figures 1 to 5 This utility model provides a technical solution: a hydraulic tester for the expansion force performance of solid-state batteries, comprising a base 1, four columns 11 fixed at the four corners of the top of the base 1, and an upper crossbeam 12 fixed at the top of the columns 11. A loading connecting rod 21 is provided at the bottom of the center of the upper crossbeam 12, and an upper pressure plate 22 is fixed at the bottom of the loading connecting rod 21. A lower pressure plate 51 is provided on the top of the base 1 corresponding to the position of the upper pressure plate 22. A piston guide plate 3 is fixed on the middle surface of the loading connecting rod 21, and the piston guide plate 3 is slidably sleeved on the four columns 11. Deformation measuring instruments 4 are installed on both sides of the piston guide plate 3, and the bottom of the deformation measuring instruments 4 is fixedly connected to the lower pressure plate 51. This device can test the length of the test sample under room temperature, high temperature heating, and low temperature cooling conditions. The time compression performance test employs a four-column 11 frame structure. During the test, the servo control system controls the movement of the piston rod of the hydraulic cylinder 2 to load the sample. The hydraulic cylinder 2 is mounted on top of the main unit. During the test, the test sample is placed between the upper pressure plate 22 and the lower pressure plate 51. The upper compression fixture is connected to the piston rod of the hydraulic cylinder 2 via the force sensor 31 and the loading connecting rod 21. The control system controls the movement of the piston rod of the hydraulic cylinder 2, thereby moving the upper compression fixture to load the sample. The deformation measuring instrument 4 is used to measure the deformation of the test sample during the loading process. The main unit can be equipped with a high and low temperature environment chamber to test the expansion force performance of the sample in a high and low temperature environment. Main unit models: 300KN, 600KN, 1000KN, 1500KN. The deformation measuring instrument 4 can be a micrometer, grating ruler, etc.

[0025] In this embodiment, a force sensor 31 is fixedly installed at the bottom center of the piston guide plate 3, and the force sensor 31 is sleeved around the loading connecting rod 21. A hydraulic cylinder 2 is fixed at the top of the upper crossbeam 12, and the loading connecting rod 21 is fixedly connected to the telescopic end of the hydraulic cylinder 2. A disc seat 5 is fixed at the bottom of the base 1 corresponding to the lower pressure plate 51, and the lower pressure plate 51 is fixed at the top of the disc seat 5. Sliding sleeves are fixed at the four corners of the piston guide plate 3, and the sliding sleeves of the piston guide plate 3 are slidably sleeved on the column 11. The piston rod of the hydraulic cylinder 2 is controlled to move to load the sample. The hydraulic cylinder 2 is installed on the top of the main unit, and the piston guide plate 3 slides along the column 11. The pressure is detected by the force sensor 31.

[0026] In this embodiment, a high and low temperature environment test chamber 6 is assembled and installed on the top of the base 1. The high and low temperature environment test chamber 6 is provided with sockets at the bottom of the deformation measuring instrument 4, the loading connecting rod 21 and the lower pressure plate 51. The bottom of the high and low temperature environment test chamber 6 is fixed on the base 1, and an observation window is provided on the middle surface of the high and low temperature environment test chamber 6. The high and low temperature environment test chamber 6 is fixed on the base 1 by splicing the front and rear sides, and wraps the upper pressure plate 22 and the lower pressure plate 51. Thus, when the solid-state battery is subjected to compression testing, a high and low temperature environment can be simulated. A temperature regulating element is set inside the high and low temperature environment test chamber 6, which is the principle of air conditioning in the prior art. During normal testing, the high and low temperature environment test chamber 6 can be disassembled and the device can be used directly for testing.

[0027] In this embodiment, four sound-absorbing pads 13 are fixed to the bottom of the base 1, and screw holes for fixing are provided at the four corners of the base 1. The screw holes and sound-absorbing pads 13 on the base 1 are for the convenience of fixing the base 1 on the table and reducing the noise generated during operation.

[0028] When using the device, during the test, the servo control system controls the piston rod of hydraulic cylinder 2 to move and load the sample. Hydraulic cylinder 2 is installed on the top of the main unit. During the test, the test sample is placed between the upper pressure plate 22 and the lower pressure plate 51. The upper compression auxiliary is connected to the piston rod of hydraulic cylinder 2 through force sensor 31 and loading linkage 21. The control system controls the movement of the piston rod of hydraulic cylinder 2 to move the upper compression auxiliary to load the sample. Deformation measuring instrument 4 is used to measure the deformation of the test sample during the loading process. The high and low temperature environment test chamber 6 is fixed on the base 1 by splicing the front and rear sides to wrap the upper pressure plate 22 and the lower pressure plate 51. Thus, when the solid-state battery is squeezed, the high and low temperature environment can be simulated. During normal testing, the high and low temperature environment test chamber 6 can be disassembled and the device can be used directly for testing.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A hydraulic tester for the expansion force performance of solid-state batteries, comprising a base (1), characterized in that: The base (1) has four columns (11) fixed at the four corners of the top, and an upper crossbeam (12) fixed at the top of the columns (11). A loading link (21) is provided at the bottom of the center of the upper crossbeam (12). An upper pressure plate (22) is fixed at the bottom of the loading link (21). A lower pressure plate (51) is provided at the top of the base (1) corresponding to the position of the upper pressure plate (22). A piston guide plate (3) is fixed on the middle surface of the loading link (21). The piston guide plate (3) is slidably sleeved on the four columns (11). Deformation measuring instruments (4) are installed on both sides of the piston guide plate (3). The bottom of the deformation measuring instrument (4) is fixedly connected to the lower pressure plate (51).

2. The hydraulic tester for the expansion force performance of solid-state batteries according to claim 1, characterized in that: A force sensor (31) is fixedly installed at the bottom center of the piston guide plate (3), and the force sensor (31) is sleeved around the loading link (21).

3. The hydraulic tester for the expansion force performance of solid-state batteries according to claim 1, characterized in that: The top of the upper crossbeam (12) is fixed with a hydraulic cylinder (2), and the loading connecting rod (21) is fixedly connected to the telescopic end of the hydraulic cylinder (2).

4. A hydraulic tester for the expansion force performance of solid-state batteries according to claim 1, characterized in that: The base (1) has a plate seat (5) fixed to the bottom of the pressure plate (51), and the pressure plate (51) is fixed to the top of the plate seat (5).

5. A hydraulic tester for the expansion force performance of solid-state batteries according to claim 1, characterized in that: The base (1) is equipped with a high and low temperature environment test chamber (6) on top, and the high and low temperature environment test chamber (6) is provided with a socket at the bottom of the deformation measuring instrument (4), the loading rod (21) and the pressure plate (51).

6. A hydraulic tester for the expansion force performance of solid-state batteries according to claim 5, characterized in that: The bottom of the high and low temperature environment test chamber (6) is fixed on the base (1), and an observation window is provided on the middle surface of the high and low temperature environment test chamber (6).

7. A hydraulic tester for the expansion force performance of solid-state batteries according to claim 1, characterized in that: The base (1) has four sound-absorbing pads (13) fixed to its bottom, and screw holes for fixing are provided at the four corners of the base (1).

8. A hydraulic tester for the expansion force performance of solid-state batteries according to claim 1, characterized in that: The piston guide plate (3) is fixed with sliding sleeves at its four corners, and the sliding sleeves of the piston guide plate (3) are slidably sleeved on the column (11).

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