Battery test fixture

Abstract

The utility model relates to the technical field of battery testing, and provides a battery testing clamp. The battery test fixture comprises a clamping plate assembly and a connecting assembly. The clamping plate assembly is used for clamping a battery, the clamping plate assembly comprises a plurality of clamping parts, the clamping parts are provided with pressure sensors, and the pressure sensors are used for detecting the clamping force of the clamping parts; the connecting assembly is used for detachably connecting the multiple clamping parts and can adjust the clamping force of the clamping parts. According to the battery test fixture, the defects that in the prior art, only one battery of a certain model can be clamped, and only one part of the battery can be tested are overcome, the battery test fixture capable of being spliced is realized, then batteries of different models can be tested, and meanwhile, due to the fact that the fixture can be spliced, the test efficiency is improved. Therefore, a plurality of parts of the battery can be tested, and the use is more flexible.

Description

Technical Field

[0001] The utility model relates to the technical field of battery testing, in particular to a battery testing fixture. Background Art

[0002] With the development of society, the use of clean energy is increasing. In recent years, my country's battery industry has developed rapidly. One of the most important parts of a battery is the battery itself, so battery safety is crucial to the safety and energy efficiency of electric vehicles. Testing battery performance is a crucial step in battery production, requiring testing for local pressure changes in the battery. During battery testing, a fixture is required to hold the battery. However, existing battery test fixtures cannot be spliced together and can only hold a single battery model. Furthermore, existing battery test fixtures can only test a specific area of the battery, failing to fully test the battery. Utility Model Content

[0003] The utility model provides a battery testing fixture to solve the defects of the prior art that it can only clamp a certain model of battery and can only test a certain part of the battery. It realizes a splicable battery testing fixture, which can test batteries of different models. At the same time, because the fixture can be spliced, multiple parts of the battery can be tested, which is more flexible to use.

[0004] The utility model provides a battery testing fixture, comprising a clamping plate assembly and a connecting assembly. The clamping plate assembly is used to clamp the battery, and the clamping plate assembly includes multiple clamping parts, each of which is equipped with a pressure sensor for detecting the clamping force of the clamping parts; the connecting assembly is used to detachably connect the multiple clamping parts and can adjust the clamping force of the clamping parts.

[0005] According to a battery testing fixture provided by the present invention, the clamping component includes: a first clamping plate, a second clamping plate and a third clamping plate, and the first clamping plate, the second clamping plate and the third clamping plate are arranged in sequence from top to bottom; one of the battery and the pressure sensor is arranged between the first clamping plate and the second clamping plate, and the other of the battery and the pressure sensor is arranged between the second clamping plate and the third clamping plate.

[0006] According to the battery testing fixture provided by the present invention, the connecting assembly includes an adjusting component, a first connecting component, and a second connecting component. The first connecting component is disposed on the first clamping plate; the second connecting component is disposed on the third clamping plate; and the adjusting component is disposed between the first and second connecting components to adjust the pressure between the first and second connecting components.

[0007] According to a battery testing fixture provided by the present invention, the first connecting component includes a first connecting plate and a first connecting hole. The first connecting plate is arranged along the width direction of the first clamping plate; there are at least two first connecting holes, and the two first connecting holes are respectively arranged at both ends of the first connecting plate.

[0008] According to a battery testing fixture provided by the present invention, the second connecting component includes a second connecting plate and a second connecting hole. The second connecting plate is arranged along the width direction of the third clamping plate; at least two second connecting holes are provided, and the two second connecting holes are respectively arranged at both ends of the second connecting plate, and the second connecting holes are arranged corresponding to the first connecting holes.

[0009] According to a battery testing fixture provided by the present invention, the clamping components are arranged in an array, and both ends of the first connecting plate and the second connecting plate extend to the outside of the clamping plate assembly.

[0010] According to a battery testing fixture provided by the present invention, the adjusting component includes a bolt and a nut, the bolt passes through the corresponding second connecting hole and the first connecting hole, and the nut is threadedly connected to the bolt to limit the bolt between the second connecting hole and the first connecting hole.

[0011] According to a battery testing fixture provided by the present invention, the first clamping plate is provided with a limiting portion, and the limiting portion is used to limit the pressure sensor.

[0012] According to the battery testing fixture provided by the present invention, the battery testing fixture further includes a data recording module, which is electrically connected to the pressure sensor and is used to record data measured by the pressure sensor.

[0013] According to a battery testing fixture provided by the present invention, one side of the first clamping plate, the second clamping plate and the third clamping plate are all provided with grooves, and the other sides of the first clamping plate, the second clamping plate and the third clamping plate are all provided with protrusions.

[0014] The present invention can detect the clamping force of the clamping component on the battery in real time and accurately by setting a pressure sensor on the clamping component. This ensures that the battery is clamped evenly and stably during the test, avoiding battery damage or test errors caused by improper holding force. Secondly, the splint assembly is composed of multiple clamping components that are detachably connected. Therefore, the present invention can be spliced into corresponding splint assemblies according to the model and size of the battery to achieve clamping and testing of batteries of different models. Secondly, each clamping component is provided with a pressure sensor, so that the present invention can detect different parts of the battery, thereby making the battery performance test more flexible and comprehensive. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic structural diagram of the assembled battery testing fixture provided by the utility model.

[0017] Figure 2 This is an exploded view of the clamping plate component of the battery testing fixture provided by the present invention.

[0018] Figure 3 This is a schematic structural diagram of the battery test fixture provided by the present invention after the first clamping plates are spliced together.

[0019] Figure markings: 100: first clamping plate; 110: limiting part; 200: second clamping plate; 300: third clamping plate; 410: adjusting part; 411: bolt; 412: nut; 420: first connecting part; 421: first connecting plate; 422: first connecting hole; 430: second connecting part; 431: second connecting plate; 432: second connecting hole; 500: battery; 600: pressure sensor. DETAILED DESCRIPTION

[0020] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0021] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0022] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on the specific circumstances.

[0023] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.

[0024] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0025] Lithium-ion battery safety failures can arise from raw material defects, manufacturing and design flaws, or external abuse. Regardless of the cause, thermal runaway ultimately results from concentrated heat generation within the battery, triggering physical and chemical reactions among various materials within the battery. The thermal runaway process can be divided into the following stages, depending on temperature: SEI film decomposition, reactions between the anode material and electrolyte, separator melting and short-circuiting, electrolyte decomposition, and reactions between the electrolyte, cathode, and binder. These processes are accompanied by gas generation.

[0026] Solid-State Batteries (SSBs) are considered to have significant advantages in intrinsic safety due to their use of non-flammable solid electrolytes, but in practical applications, they still face many challenges, such as the interface stability between the electrolyte and the electrode material, the ionic conductivity of the electrolyte, and the optimization of the battery structure and manufacturing process. The long-term stability of solid electrolyte materials in extreme environments is also an issue that cannot be ignored. Under extreme conditions such as high temperature or high pressure, the chemical and physical properties of the electrolyte material may change, affecting the performance and safety of the battery. Therefore, the development of electrolyte materials that can remain stable under these conditions is the key to improving the safety of SSBs. Whether it is a lithium battery or a solid-state battery, testing its performance is a very important link in its production process. It is necessary to test the local pressure changes of the battery, but the existing battery test fixture cannot be spliced and can only clamp a certain model of battery. In addition, the existing battery test fixture can only test a certain part of the battery and cannot test the battery comprehensively. In order to solve this problem, the utility model provides a battery test fixture. The following will refer to Figure 1-Figure 3 The present invention is described. It should be noted that the present invention can be applied to lithium batteries as well as solid-state batteries.

[0027] in, Figure 1 The schematic diagram of the assembled structure of the battery test fixture provided by the embodiment of the utility model is illustrated (it is reminded that Figure 1 for Figure 3 side view). Figure 1 The battery testing fixture provided by the present invention includes a clamping plate assembly and a connecting assembly. The clamping plate assembly is used to clamp the battery 500 and includes multiple clamping components, each of which is equipped with a pressure sensor 600 for detecting the clamping force of the clamping components. The connecting assembly is used to detachably connect the multiple clamping components and adjust the clamping force of the clamping components.

[0028] In the above structure, by setting a pressure sensor 600 on the clamping component, the clamping force of the clamping component on the battery can be detected in real time and accurately. This ensures that the battery is clamped evenly and stably during the test, avoiding battery damage or test errors caused by improper holding force. Secondly, the splint assembly is composed of a plurality of clamping components that are detachably connected. Therefore, the utility model can be spliced into corresponding splint assemblies according to the model and size of the battery 500, so as to achieve clamping and testing of batteries of different models. Secondly, each clamping component is provided with a pressure sensor 600. The utility model can detect different parts of the battery, making the battery performance test more flexible and comprehensive.

[0029] Figure 2 The exploded view of the clamping component of the battery test fixture provided by the embodiment of the present invention is illustrated. Figure 2 In some embodiments of the present invention, the clamping component includes a first clamping plate 100, a second clamping plate 200 and a third clamping plate 300, and the first clamping plate 100, the second clamping plate 200 and the third clamping plate 300 are arranged in sequence from top to bottom; one of the battery 500 and the pressure sensor 600 is arranged between the first clamping plate 100 and the second clamping plate 200, and the other of the battery 500 and the pressure sensor 600 is arranged between the second clamping plate 200 and the third clamping plate 300.

[0030] It should be noted that the above includes at least two schemes: In scheme one, the battery 500 is arranged between the first plywood 100 and the second plywood 200, and the pressure sensor 600 is arranged between the second plywood 200 and the third plywood 300; in scheme two, the battery 500 is arranged between the second plywood 200 and the third plywood 300, and the pressure sensor 600 is arranged between the first plywood 100 and the second plywood 200.

[0031] In some possible embodiments, the material and shape of the first plywood 100, the second plywood 200, and the third plywood 300 can be made of materials with appropriate hardness and wear resistance according to the characteristics of the battery and the testing requirements. At the same time, the shapes of the first plywood 100, the second plywood 200, and the third plywood 300 can also be customized to better adapt to the contour and surface characteristics of the battery and improve the stability and reliability of the clamping. Specifically, the first plywood 100, the second plywood 200, and the third plywood 300 can be made of stainless steel, iron, or aluminum. The shapes of the first plywood 100, the second plywood 200, and the third plywood 300 can be rectangular, square, etc., and their thickness is 1 cm-2 cm.

[0032] In other possible embodiments, the battery test fixture also includes an intelligent control system that combines the pressure sensor 600, the clamping assembly, and the intelligent control system to achieve automatic adjustment and feedback of the clamping force. By presetting the holding force range or adjusting it based on real-time clamping force data, it is ensured that the battery is always subjected to the appropriate clamping force during the test. Among them, the pressure sensor 600 can use a high-precision, high-response speed sensor to achieve accurate measurement of the clamping force and real-time feedback. At the same time, the sensor is calibrated and maintained to ensure its accuracy and reliability.

[0033] Reference Figure 1 and Figure 2In some embodiments of the present invention, the connecting assembly includes an adjusting component 410, a first connecting component 420, and a second connecting component 430. The first connecting component 420 is disposed on the first clamping plate 100; the second connecting component 430 is disposed on the third clamping plate 300; the adjusting component 410 is disposed between the first connecting component 420 and the second connecting component 430 and is used to adjust the pressure between the first connecting component 420 and the second connecting component 430. The first connecting component 420 includes a first connecting plate 421 and a first connecting hole 422. The first connecting plate 421 is disposed along the width direction of the first clamping plate 100; at least two first connecting holes 422 are provided, and the two first connecting holes 422 are respectively disposed at both ends of the first connecting plate 421. The second connecting component 430 includes a second connecting plate 431 and a second connecting hole 432. The second connecting plate 431 is arranged along the width direction of the third clamping plate 300; there are at least two second connecting holes 432, and the two second connecting holes 432 are respectively arranged at both ends of the second connecting plate 431, and the second connecting holes 432 are arranged corresponding to the first connecting holes 422.

[0034] It should be noted that the first connecting parts 420 on different first splints 100 can be set at different positions, and for subsequent splicing, in order to prevent the first connecting parts 420 from interfering with the two adjacent first splints 100, the first connecting parts 420 on the two adjacent first splints 100 can be staggered, and the length of one side of the first connecting part 420 extending is greater than the width of the first splint 100. In this way, when the two first splints 100 are spliced, the first connecting parts 420 can be extended to the outside for easy connection. The first connecting parts 420 can be set on the upper surface or the lower surface of the first splint 100, so that when the two first splints 100 are spliced, they will not be affected by the first connecting parts 420. The first connecting parts 420 can be made of metal materials, such as stainless steel, aluminum alloy, etc.

[0035] Figure 3 The following is a schematic diagram of the structure of the battery test fixture provided by the embodiment of the present invention after the first clamping plate is spliced. It should be noted that the splicing method of the second clamping plate and the third clamping plate is the same as the splicing method of the first clamping plate. Figure 3 In some embodiments of the present invention, the clamping components are arranged in a rectangular array, and both ends of the first connecting plate 421 and the second connecting plate 431 extend to the outside of the clamping plate assembly.

[0036] Reference Figure 2In some embodiments of the present invention, the adjustment component 410 includes a bolt 411 and a nut 412. The bolt 411 passes through the corresponding second connection hole 432 and the first connection hole 422. The nut 412 is threadedly connected to the bolt 411 to limit the bolt 411 between the second connection hole 432 and the first connection hole 422. After the clamping components are assembled, the first connection component 420 and the second connection component 430 are aligned up and down. Then, the bolt 411 is passed through the first connection component 420 and the second connection component 430 and connected by the nut 412 to achieve clamping of the battery. At the same time, the tightness of the connection between the bolt 411 and the nut 412 can be adjusted to adjust the clamping force of the battery 500. In addition, each clamping component can be adjusted independently, so that the clamping force of different parts of the battery 500 can be adjusted.

[0037] Reference Figure 2 In some embodiments of the present invention, the first clamping plate 100 is provided with a limiting portion 110, which is used to limit the position of the pressure sensor 600. The limiting portion 110 can be specifically a groove, and the shape of the groove matches the pressure sensor 600. The pressure sensor 600 is fixedly installed in the groove, and the clamping force of the clamp is measured by squeezing between the first clamping plate 100 and the second clamping plate 200.

[0038] In some possible embodiments, the fixture further includes a data recording module, which is electrically connected to the pressure sensor 600 and is used to record data measured by the pressure sensor 600 .

[0039] In some possible embodiments, a groove is provided on one side of the first, second, and third plates 100, 200, and 300, and a protrusion is provided on the other side of the first, second, and third plates 100, 200, and 300. When the first, second, and third plates 100, 200, and 300 are joined together, the groove on one plate can be positioned to engage with the protrusion on the other plate, thereby making the connection tighter and more secure.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention 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 of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A battery testing fixture, characterized in that: include: A clamping plate assembly for clamping a battery (500), the clamping plate assembly comprising a plurality of clamping components, the clamping components being provided with pressure sensors (600), the pressure sensors (600) being used to detect the clamping force of the clamping components; The connecting assembly is used to detachably connect the plurality of clamping components and to adjust the clamping force of the clamping components.

2. The battery test fixture according to claim 1, characterized in that: The clamping component comprises: a first clamping plate (100), a second clamping plate (200) and a third clamping plate (300), wherein the first clamping plate (100), the second clamping plate (200) and the third clamping plate (300) are sequentially arranged from top to bottom at intervals; One of the battery (500) and the pressure sensor (600) is disposed between the first clamping plate (100) and the second clamping plate (200), and the other of the battery (500) and the pressure sensor (600) is disposed between the second clamping plate (200) and the third clamping plate (300).

3. The battery test fixture according to claim 2, characterized in that: The connection component includes: A first connecting member (420) is provided on the first clamping plate (100); A second connecting member (430) is provided on the third clamping plate (300); The adjusting component (410) is provided between the first connecting component (420) and the second connecting component (430) and is used to adjust the pressure between the first connecting component (420) and the second connecting component (430).

4. The battery test fixture according to claim 3, characterized in that: The first connecting component (420) includes: a first connecting plate (421) arranged along the width direction of the first clamping plate (100); There are at least two first connection holes (422), and the two first connection holes (422) are respectively arranged at two ends of the first connection plate (421).

5. The battery test fixture according to claim 4, characterized in that: The second connecting component (430) includes: a second connecting plate (431) arranged along the width direction of the third clamping plate (300); There are at least two second connection holes (432), and the two second connection holes (432) are respectively arranged at both ends of the second connection plate (431), and the second connection holes (432) are arranged corresponding to the first connection holes (422).

6. The battery test fixture according to claim 5, characterized in that: The clamping parts are arranged in an array, and both ends of the first connecting plate (421) and the second connecting plate (431) extend to the outside of the clamping plate assembly.

7. The battery test fixture according to claim 5 or 6, characterized in that: The adjusting component (410) includes a bolt (411) and a nut (412), wherein the bolt (411) passes through the corresponding second connecting hole (432) and the first connecting hole (422), and the nut (412) is threadedly connected to the bolt (411) to limit the bolt (411) between the second connecting hole (432) and the first connecting hole (422).

8. The battery testing fixture according to any one of claims 2 to 6, characterized in that: The first clamping plate (100) is provided with a limiting portion (110), and the limiting portion (110) is used to limit the pressure sensor (600).

9. The battery testing fixture according to any one of claims 1 to 6, characterized in that: It also includes a data recording module, which is electrically connected to the pressure sensor (600) and is used to record data measured by the pressure sensor (600).

10. The battery testing fixture according to any one of claims 2 to 6, characterized in that: One side of the first splint (100), the second splint (200) and the third splint (300) is provided with a groove, and the other side of the first splint (100), the second splint (200) and the third splint (300) is provided with a protrusion.

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