Solid-state battery test fixture and solid-state battery test device

Abstract

The utility model relates to the technical field of solid-state battery testing, in particular to a solid-state battery testing clamp and a solid-state battery testing device.The solid-state battery testing clamp comprises a first clamping part, a second clamping part, a driving part and a pressure sensor, and the first clamping part and the second clamping part are oppositely arranged in the preset direction; the driving part is in transmission connection with at least one of the first clamping part and the second clamping part so as to drive the first clamping part and the second clamping part to be close to each other and away from each other in the preset direction. At least one of the first clamping part and the second clamping part is provided with a pressure sensor, and the pressure sensor is in communication connection with the driving part. According to the solid-state battery test fixture and the solid-state battery test device provided by the invention, the clamping force applied to the to-be-tested battery by the solid-state battery test fixture is quantitatively controlled, the influence of different clamping forces on the test result of the solid-state battery is eliminated, and the test accuracy and reliability are improved.

Description

Technical Field

[0001] The present application relates to the technical field of solid-state battery testing, and in particular to a solid-state battery testing fixture and a solid-state battery testing device. Background Art

[0002] Solid-state batteries are a new type of battery technology that uses solid electrolytes instead of traditional liquid or polymer electrolytes. Compared to traditional liquid batteries, they offer advantages such as increased safety, high energy density, and long cycle life, and are widely anticipated, particularly in electric vehicles, portable electronic devices, and energy storage systems.

[0003] During the use of solid-state batteries, the electrolyte and electrodes need to be in close contact to ensure a good ion conduction path, which means that applying different pressures to the solid-state battery will directly affect the electrical performance of the solid-state battery.

[0004] In today's battery testing process, a battery test fixture is usually used to clamp the battery to be tested to achieve electrical connection and fixation of the battery to be tested. However, today's battery test fixtures usually directly clamp the battery to be tested between two clamping parts (see Chinese patent document CN211603284U, a polymer battery test fixture). This makes it difficult for the battery test fixture to quantitatively control the clamping force applied to the battery to be tested. Under different clamping forces, the electrical properties of the solid-state battery will produce different changes, which directly affects the accuracy and reliability of the solid-state battery test. Utility Model Content

[0005] The purpose of this application is to provide a solid-state battery testing fixture and a solid-state battery testing device, so as to solve, to a certain extent, the technical problem that the battery testing fixture in the prior art is difficult to quantitatively control the clamping force applied to the battery to be tested, and under different clamping forces, the electrical properties of the solid-state battery will produce different changes, which directly affects the test accuracy and reliability of the solid-state battery.

[0006] According to a first aspect of the present application, a solid-state battery testing fixture is provided, comprising a first clamping portion, a second clamping portion, a driving portion, and a pressure sensor, wherein the first clamping portion and the second clamping portion are arranged opposite each other along a predetermined direction, and the driving portion is in transmission connection with at least one of the first clamping portion and the second clamping portion to drive the first clamping portion and the second clamping portion to move toward and away from each other along the predetermined direction;

[0007] At least one of the first clamping portion and the second clamping portion is provided with the pressure sensor, and the pressure sensor is communicatively connected with the driving portion.

[0008] Preferably, the first clamping portion is fixedly arranged, and the driving portion is transmission-connected to the second clamping portion.

[0009] Preferably, the apparatus further comprises a first placement plate and a pillar extending along the predetermined direction, the first clamping portion comprises a first clamping plate, and the first clamping plate and the first placement plate are respectively fixed to two ends of the pillar;

[0010] The driving portion and the second clamping portion are both arranged between the first clamping plate and the first placement plate, and the driving portion is fixedly arranged on the first placement plate.

[0011] Preferably, the second clamping portion further includes a second clamping plate, the second clamping plate is provided with a guide hole passing through the second clamping plate along the predetermined direction, and the support passes through the guide hole and is slidably connected to the second clamping plate.

[0012] Preferably, it further comprises a driving plate, and the power output end of the driving part is connected to the driving plate;

[0013] The pressure sensor is disposed between the second clamping plate and the driving plate, and connects the second clamping plate and the driving plate.

[0014] Preferably, it further comprises a second placement plate fixedly connected to the pillar, the driving part comprises a cylinder and a piston, the cylinder is fixed between the first placement plate and the second placement plate, and the piston passes through the second placement plate.

[0015] Preferably, the driving unit further includes a proportional valve for controlling the air pressure in the cylinder, and the pressure sensor is communicatively connected to the proportional valve.

[0016] Preferably, the first clamping portion further includes a first polarity terminal for electrically connecting to a first polarity of the battery to be tested, and the first polarity terminal is fixed to a side of the first clamping plate facing the second clamping plate;

[0017] The second clamping portion further includes a second polarity terminal for electrically connecting to a second polarity of the battery to be tested, and the second polarity terminal is fixed to a side of the second clamping plate facing the first clamping plate;

[0018] The first polarity terminal and the second polarity terminal are arranged opposite to each other along the predetermined direction.

[0019] Preferably, the first clamping portion further includes a first insulating layer, the first insulating layer being fully distributed on the side of the first clamping plate facing the second clamping plate, and being disposed between the first clamping plate and the first polarity terminal;

[0020] The second clamping portion further includes a second insulating layer. The second insulating layer is fully distributed on the side of the second clamping plate facing the first clamping plate and is disposed between the second clamping plate and the second polarity terminal.

[0021] According to the second aspect of the present application, a solid-state battery testing device is provided, comprising the solid-state battery testing fixture described in any of the above technical solutions, and thus having all the beneficial technical effects of the solid-state battery testing fixture, which will not be described in detail here.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] The solid-state battery test fixture provided by the present application connects at least one of the first clamping part and the second clamping part that are arranged opposite to each other in a predetermined direction with a driving part, so that the driving part drives the first clamping part and the second clamping part to approach and move away from each other in the predetermined direction, so that the solid-state battery test fixture can perform the action of clamping and releasing the battery to be tested, and a pressure sensor that is communicatively connected to the driving part is provided on at least one of the first clamping part and the second clamping part, so that the driving part can adjust the degree of clamping of the first clamping part and the second clamping part on the battery to be tested according to the clamping force applied by the solid-state battery test fixture to the battery to be tested fed back by the pressure sensor, thereby realizing quantitative control of the clamping force applied by the solid-state battery test fixture to the battery to be tested, eliminating the influence of different clamping forces on the test results of the solid-state battery, and improving the accuracy and reliability of the test.

[0024] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0026] Figure 1 A schematic diagram of the front view of the solid-state battery test fixture provided in an embodiment of the present application;

[0027] Figure 2 A schematic diagram of the axonometric structure of the solid-state battery test fixture provided in an embodiment of the present application.

[0028] Reference numerals:

[0029] 1-first clamping part; 11-first clamping plate; 12-first polarity terminal; 13-first insulating layer; 2-second clamping part; 21-second clamping plate; 22-second polarity terminal; 23-second insulating layer; 3-driving part; 31-piston; 32-cylinder; 4-pressure sensor; 5-pillar; 6-first mounting plate; 7-driving plate; 8-second mounting plate; F1-predetermined direction. DETAILED DESCRIPTION

[0030] The technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0031] The components of the embodiments of the present application generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the present application.

[0032] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0033] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0035] Refer to the following Figure 1 and Figure 2 A solid-state battery testing fixture and a solid-state battery testing device according to some embodiments of the present application are described.

[0036] See also Figure 1 and Figure 2 As shown, an embodiment of the first aspect of the present application provides a solid-state battery test fixture, which includes a first clamping part 1, a second clamping part 2, a driving part 3 and a pressure sensor 4. The first clamping part 1 and the second clamping part 2 are arranged opposite each other along a predetermined direction F1. The driving part 3 is transmission-connected to at least one of the first clamping part 1 and the second clamping part 2 to drive the first clamping part 1 and the second clamping part 2 to move closer to and away from each other along the predetermined direction F1. At least one of the first clamping part 1 and the second clamping part 2 is provided with a pressure sensor 4, which is communicatively connected to the driving part 3.

[0037] According to the solid-state battery test fixture provided by the above-mentioned technical features, at least one of the first clamping part 1 and the second clamping part 2 arranged opposite to each other along the predetermined direction F1 is connected to the driving part 3 by transmission, so that the first clamping part 1 and the second clamping part 2 are driven by the driving part 3 to move closer to and away from each other along the predetermined direction F1, so that the solid-state battery test fixture can perform the action of clamping and releasing the battery to be tested, and a pressure sensor 4 communicatively connected to the driving part 3 is provided on at least one of the first clamping part 1 and the second clamping part 2, so that the driving part 3 can adjust the degree of clamping of the first clamping part 1 and the second clamping part 2 on the battery to be tested according to the clamping force applied by the solid-state battery test fixture to the battery to be tested fed back by the pressure sensor 4, thereby realizing quantitative control of the clamping force applied by the solid-state battery test fixture to the battery to be tested, eliminating the influence of different clamping forces on the test results of the solid-state battery, and improving the accuracy and reliability of the test.

[0038] Preferably, if Figure 1 and Figure 2 As shown, the first clamping part 1 can be fixedly arranged, and the driving part 3 can be transmission-connected with the second clamping part 2, and the second clamping part 2 is driven to move by the driving part 3, so that the driving part 3 drives the first clamping part 1 and the second clamping part 2 to move closer to and away from each other along the predetermined direction F1.

[0039] However, it is not limited to this. As long as it can be ensured that the driving part 3 can drive the first clamping part 1 and the second clamping part 2 to move closer to and away from each other along the predetermined direction F1, so that the solid-state battery test fixture can perform the clamping / release action, the transmission connection relationship between the driving part 3 of the above-mentioned solid-state battery test fixture and the first clamping part 1 and the second clamping part 2 can also be in other forms. For example, not shown in the figure, the above-mentioned solid-state battery test fixture can also be a fixed arrangement of the second clamping part, and the driving part is transmission-connected to the first clamping part; for another example, not shown in the figure, the number of the above-mentioned driving parts is two, and the two driving parts are transmission-connected to the first clamping part and the second clamping part respectively; for another example, not shown in the figure, the two ends of the above-mentioned driving part in the predetermined direction are transmission-connected to the first clamping part and the second clamping part respectively.

[0040] The following describes the solid-state battery test fixture provided by the present application in detail, taking the example in which the first clamping part 1 is fixedly arranged and the second clamping part 2 is transmission-connected to the driving part 3 as an example:

[0041] Preferably, if Figure 1 and Figure 2 As shown, the solid-state battery test fixture may further include a first placement plate 6 and a pillar 5 extending along a predetermined direction F1, and the first clamping portion 1 may further include a first clamping plate 11. The first clamping plate 11 and the first placement plate 6 may be fixed to both ends of the pillar 5 respectively, and the driving portion 3 and the second clamping portion 2 are both arranged between the first clamping plate 11 and the first placement plate 6, and the driving portion 3 is fixed to the first placement plate 6, so as to facilitate the fixation of the driving portion 3 and the first clamping plate 11.

[0042] Preferably, if Figure 1 and Figure 2 As shown, the above-mentioned second clamping part 2 can also include a second clamping plate 21, and the second clamping plate 21 is provided with a guide hole passing through the second clamping plate 21 along the predetermined direction F1. The pillar 5 passes through the guide hole and is slidably connected to the second clamping plate 21. In this way, the accuracy of the second clamping plate moving along the predetermined direction F1 is improved through the guiding effect of both the pillar 5 and the guide hole.

[0043] Preferably, if Figure 1 and Figure 2 As shown, the number of the above-mentioned pillars 5 can be multiple, and the multiple pillars 5 are arranged at intervals along the edges of the first splint 11 and the second splint 21. On the one hand, the stability of the first splint 11 and the first placement plate 6 is improved; on the other hand, the pillars 5 are arranged along the edges of the first splint 11 and the second splint 21, which can effectively ensure that there is sufficient clamping space in the middle of the first splint 11 and the second splint 21, and setting the clamping space in the middle position can also ensure that the clamping force of the first splint 11 and the second splint 21 is evenly distributed.

[0044] by Figure 1 and Figure 2 Taking the example that both the first clamping plate 11 and the second clamping plate 21 are square plates, the number of the pillars 5 can be four, and the four pillars can be respectively arranged at the four corners of the square plate.

[0045] However, the shapes of the first and second splints 11 and 21 are not limited to square, but may also be circular, elliptical, triangular, pentagonal, hexagonal, quadrangular, pentagram, polygonal, multi-pointed star or other special shapes.

[0046] Preferably, if Figure 1 and Figure 2As shown, the first clamping portion 1 may further include a first polarity terminal 12 for electrically connecting to the first polarity of the battery to be tested, and the first polarity terminal 12 is fixed to the side of the first clamping plate 11 facing the second clamping plate 21. Figure 1 and Figure 2 As shown, the second clamping portion 2 also includes a second polarity terminal 22 for electrically connecting to the second polarity of the battery under test. The second polarity terminal 22 is fixed to the side of the second clamping plate 21 facing the first clamping plate 11. The first polarity terminal 12 and the second polarity terminal 22 are arranged opposite each other along a predetermined direction F1. Thus, when the first clamping portion 1 and the second clamping portion 2 both clamp the battery under test, an electrical connection can be established with the battery under test via both the first polarity terminal 12 and the second polarity terminal 22.

[0047] Preferably, if Figure 1 and Figure 2 As shown, the first clamping portion 1 further includes a first insulating layer 13. The first insulating layer 13 is fully distributed on the side of the first clamping plate 11 facing the second clamping plate 21 and is disposed between the first clamping plate 11 and the first polarity terminal 12. In this way, the insulation between the first clamping plate 11 and the first polarity terminal 12 is effectively achieved, and the first clamping plate 11 is effectively prevented from being charged when the first clamping portion 1 and the second clamping portion 2 clamp the battery to be tested, thereby affecting the accuracy and safety of the test.

[0048] Similarly, if Figure 1 and Figure 2 As shown, the second clamping portion 2 further includes a second insulating layer 23. The second insulating layer 23 is fully distributed on the side of the second clamping plate 21 facing the first clamping plate 11 and is arranged between the second clamping plate 21 and the second polarity terminal 22. In this way, the insulation between the second clamping plate 21 and the second polarity terminal 22 is effectively achieved, and the second clamping plate 21 is effectively prevented from being charged when the first clamping portion 1 and the second clamping portion 2 clamp the battery to be tested, thereby affecting the accuracy and safety of the test.

[0049] Preferably, the above-mentioned solid-state battery test fixture can also include a driving plate 7, the power output end of the driving part 3 can be connected to the driving plate 7, and the above-mentioned pressure sensor 4 can be arranged between the second clamping plate 21 and the driving plate 7, and connect the second clamping plate 21 and the driving plate 7. In this way, the pressure sensor 4 is arranged between the second clamping plate 21 and the driving plate 7 and connects the second clamping plate 21 and the driving plate 7, which not only can realize the transmission connection between the driving part 3 and the second clamping plate 21, but also the pressure sensor 4 can realize real-time feedback of the clamping force of the second clamping plate 21 on the battery to be tested by sensing the pressure changes between the second clamping plate 21 and the driving plate 7.

[0050] Preferably, if Figure 1 and Figure 2As shown, the battery test fixture may further include a second mounting plate 8 fixedly connected to the support 5. The driving unit 3 may include a cylinder 32 and a piston 31. In other words, the power output end of the driving unit 3 may be the piston 31. The cylinder 32 may be fixed between the first mounting plate 6 and the second mounting plate 8. The piston 31 extends through the second mounting plate 8 to facilitate connection with the driving plate 7.

[0051] However, the present invention is not limited to this. The driving part 3 is not limited to the form of a cylinder 32 and a piston 31. As long as it can drive the second clamping part 2 to move linearly along the predetermined direction F1, the driving part 3 can also be other linear driving forms, such as a hydraulic cylinder and a piston 31; or a linear motor and a power output shaft; or a rotary motor and a rack and pinion, etc.

[0052] Optionally, not shown in the figures, the driving unit 3 may further include a proportional valve for controlling the air pressure in the cylinder 32 , and the pressure sensor 4 is communicatively connected to the proportional valve.

[0053] An embodiment of the second aspect of the present application further provides a solid-state battery testing device, comprising the solid-state battery testing fixture described in any of the above embodiments, and thus having all the beneficial technical effects of the solid-state battery testing fixture, which will not be repeated here.

[0054] Preferably, not shown in the figure, the above-mentioned solid-state battery testing device may also include a testing instrument and a controller that are communicatively connected to each other, and the above-mentioned first polarity terminal 12 and the above-mentioned second polarity terminal 22 may both be connected to the testing instrument so as to transfer the first polarity terminal 12 and the second polarity terminal 22 to the testing instrument for detection, and transmit the data detected by the testing instrument to the controller for analysis.

[0055] Preferably, the pressure sensor 4 and the proportional valve can both be connected to the controller for communication, so that the pressure sensor 4 and the proportional valve can be connected to each other through the controller, so that the pressure information obtained by the pressure sensor 4 can be converted into opening and closing instructions of the proportional valve through analysis by the controller.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A solid-state battery test fixture, characterized in that: The device comprises a first clamping portion, a second clamping portion, a driving portion, and a pressure sensor, wherein the first clamping portion and the second clamping portion are arranged opposite to each other along a predetermined direction, and the driving portion is in transmission connection with at least one of the first clamping portion and the second clamping portion to drive the first clamping portion and the second clamping portion to move toward and away from each other along the predetermined direction; At least one of the first clamping portion and the second clamping portion is provided with the pressure sensor, and the pressure sensor is communicatively connected with the driving portion.

2. The solid-state battery test fixture according to claim 1, characterized in that: The first clamping portion is fixedly arranged, and the driving portion is transmission-connected to the second clamping portion.

3. The solid-state battery test fixture according to claim 2, characterized in that: The apparatus further comprises a first placement plate and a pillar extending along the predetermined direction, wherein the first clamping portion comprises a first clamping plate, and the first clamping plate and the first placement plate are respectively fixed to two ends of the pillar; The driving portion and the second clamping portion are both arranged between the first clamping plate and the first placement plate, and the driving portion is fixedly arranged on the first placement plate.

4. The solid-state battery test fixture according to claim 3, characterized in that: The second clamping portion further includes a second clamping plate, the second clamping plate is provided with a guide hole passing through the second clamping plate along the predetermined direction, and the support column passes through the guide hole and is slidably connected to the second clamping plate.

5. The solid-state battery test fixture according to claim 4, characterized in that: It also includes a driving plate, and the power output end of the driving part is connected to the driving plate; The pressure sensor is disposed between the second clamping plate and the driving plate, and connects the second clamping plate and the driving plate.

6. The solid-state battery test fixture according to claim 4, characterized in that: It also includes a second placement plate fixedly connected to the support, and the driving part includes a cylinder and a piston. The cylinder is fixed between the first placement plate and the second placement plate, and the piston passes through the second placement plate.

7. The solid-state battery test fixture according to claim 6, characterized in that: The driving unit further includes a proportional valve for controlling the air pressure in the cylinder, and the pressure sensor is communicatively connected to the proportional valve.

8. The solid-state battery test fixture according to any one of claims 4 to 6, characterized in that: The first clamping portion further includes a first polarity terminal for electrically connecting to a first polarity of the battery to be tested, wherein the first polarity terminal is fixed to a side of the first clamping plate facing the second clamping plate; The second clamping portion further includes a second polarity terminal for electrically connecting to a second polarity of the battery to be tested, and the second polarity terminal is fixed to a side of the second clamping plate facing the first clamping plate; The first polarity terminal and the second polarity terminal are arranged opposite to each other along the predetermined direction.

9. The solid-state battery test fixture according to claim 8, characterized in that: The first clamping portion further includes a first insulating layer, which is completely distributed on a side of the first clamping plate facing the second clamping plate and is disposed between the first clamping plate and the first polarity terminal; The second clamping portion further includes a second insulating layer. The second insulating layer is fully distributed on the side of the second clamping plate facing the first clamping plate and is disposed between the second clamping plate and the second polarity terminal.

10. A solid-state battery testing device, characterized in that: A solid-state battery test fixture comprising the solid-state battery test fixture according to any one of claims 1 to 9.

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