Battery cell test fixture and battery cell test device
By designing the battery cell test fixture and using the combined structure of the base and the pressure plate to fix the battery cell, the problem that the battery cell cannot be fixed during the needle puncture test is solved, and the stability and accuracy during the test process are achieved.
Patent Information
- Application Number
- CN202420513048.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-15
- Publication Date
- 2025-02-21
- Estimated Expiration
- 2034-03-15
AI Technical Summary
During the existing battery cell acupuncture test, the battery cell cannot be fixed, causing the battery cell to rise with the acupuncture needle after it is pierced.
A battery cell test fixture is designed, including a base and two pressure plates. The battery cell is carried above the base, and the pressure plate is pressed on both ends of the battery cell and is bolted to the base to tighten the battery cell.
Through the design of the battery cell test fixture, the battery cell is effectively fixed, avoiding the problem of the battery cell rising with the puncture needle after the puncture needle is pierced, ensuring the stability and accuracy of the test.
Smart Images
Figure CN222514607U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of battery cell testing technology, and in particular to a battery cell testing fixture and a battery cell testing device. Background Technology
[0002] As a crucial component of new energy vehicles, power batteries face increasingly diverse testing requirements. In routine laboratory testing, the battery nail penetration test is indispensable.
[0003] In existing battery cell needle penetration tests, the needle is usually placed above the battery cell to perform the needle penetration test. However, in existing battery cell needle penetration tests, the battery cell cannot be fixed in place, and after the needle penetrates the battery cell, the battery cell will rise up with the needle. Utility Model Content
[0004] The purpose of this application is to provide a battery cell testing fixture and a battery cell testing device, thereby solving the problem that the battery cell cannot be fixed and will rise with the needle during the existing battery cell needle penetration test.
[0005] According to a first aspect of this application, a battery cell testing fixture is provided, the battery cell testing fixture including a base and two pressure plates; the base is capable of supporting a battery cell to be tested; the two pressure plates are respectively pressed against both ends of the battery cell; the pressure plates are bolted to the base to press the battery cell tightly.
[0006] In any of the above technical solutions, the cell testing fixture further includes a toothed rod; the pressure plate is provided with a pressure plate threaded hole, and the base is provided with a base threaded hole; the thread at one end of the toothed rod is sequentially threadedly connected to the pressure plate threaded hole and the base threaded hole.
[0007] In any of the above technical solutions, there are four toothed rods; each of the pressure plates has a threaded hole at both ends.
[0008] In any of the above technical solutions, the two pressure plates are arranged in parallel; the length direction of the battery cell is perpendicular to the pressure plates.
[0009] In any of the above technical solutions, the cell testing fixture further includes a nut; the nut is threadedly connected to the toothed rod, and the nut is located above the pressure plate for locking the pressure plate.
[0010] In any of the above technical solutions, the pressure plate is further described as a steel plate.
[0011] According to a second aspect of this application, a battery cell testing apparatus is provided, including the battery cell testing fixture described above.
[0012] In any of the above technical solutions, the battery cell testing device further includes the battery cell; the surface of the battery cell is provided with detection wires; and the pressure plate is capable of pressing the detection wires.
[0013] In any of the above technical solutions, the cell testing device further includes a needle; the needle is disposed above the cell and can move toward the cell to puncture it.
[0014] In any of the above technical solutions, the cell testing device further includes a compression head; the compression head is disposed above the cell and can move toward the cell to compress it.
[0015] According to the battery cell testing fixture of this application, the battery cell testing fixture includes a base and two pressure plates. The base can support the battery cell to be tested; the two pressure plates press on both ends of the battery cell respectively; the pressure plates are bolted to the base to compress the battery cell.
[0016] Based on the above technical features, the beneficial effects of this application are as follows:
[0017] When using the battery cell testing fixture of this application to fix the battery cell, first place the battery cell to be tested on the base, then press the two pressure plates on both ends of the battery cell respectively, and finally bolt the pressure plates to the base to tighten the battery cell.
[0018] Once the battery cell is fixed, the battery cell needle piercing equipment can be turned on for testing. During the test, because the battery cell is pressed and fixed by the pressure plate (the base is clamped and fixed by the pressure plate), the battery cell will not rise with the needle after the needle is inserted.
[0019] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 A schematic diagram of the overall structure of a cell testing fixture according to an embodiment of this application is shown;
[0022] Figure 2 Show Figure 1 Side view;
[0023] Figure 3 Show Figure 1 The front view;
[0024] Figure 4 Show Figure 1 Top view;
[0025] Figure 5 A schematic diagram of the structure of a pressure plate according to an embodiment of this application is shown.
[0026] Icons: 100 - base; 200 - pressure plate; 300 - toothed rod; 400 - nut. Detailed Implementation
[0027] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.
[0028] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.
[0029] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.
[0030] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.
[0031] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.
[0032] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.
[0033] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.
[0034] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.
[0035] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.
[0036] The first aspect of this application provides a battery cell testing fixture, thereby solving the problem that the battery cell cannot be fixed and will rise with the needle during the existing battery cell needle penetration test.
[0037] The following will refer to Figures 1 to 5 Detailed description of the cell testing fixture according to some embodiments of this application.
[0038] like Figures 1 to 3 As shown, the battery cell testing fixture of this application includes a base 100 and two pressure plates 200. The base 100 can support the battery cell to be tested; the two pressure plates 200 press on both ends of the battery cell respectively; the pressure plates 200 are bolted to the base 100 to press the battery cell tightly.
[0039] Based on the above technical features, the beneficial effects of this application are as follows:
[0040] When using the battery cell testing fixture of this application to fix the battery cell, first place the battery cell to be tested on the base 100 (not shown in the battery cell diagram), then press the two pressure plates 200 on both ends of the battery cell respectively, and finally bolt the pressure plates 200 to the base 100 to tighten the battery cell.
[0041] Once the battery cell is fixed, the battery cell needle piercing equipment can be turned on for testing. During the test, since the battery cell is pressed and fixed by the pressure plate 200 (the base 100 is clamped and fixed by the pressure plate 200), the battery cell will not rise with the needle after the needle is inserted.
[0042] In the embodiments of this application, the pressure plate 200 and the base 100 can be bolted together by the toothed rod 300.
[0043] Specifically, such as Figures 1 to 3 As shown, the cell testing fixture also includes a threaded rod 300. The pressure plate 200 has a pressure plate threaded hole, and the base 100 has a base threaded hole; the thread at one end of the threaded rod 300 is sequentially threaded into the pressure plate threaded hole and the base threaded hole to achieve the installation of the pressure plate 200 and the base 100.
[0044] Preferably, the threaded hole in the pressure plate is a through hole, the threaded hole in the base is a blind hole, and the thread at one end of the toothed rod 300 passes through the threaded hole in the pressure plate and is threadedly fixed to the threaded hole in the base.
[0045] Preferably, such as Figure 1 As shown, there are four tooth bars 300; each pressure plate 200 has a pressure plate threaded hole at both ends.
[0046] Preferably, the two pressure plates 200 are arranged in parallel, and the length direction of the battery cell is perpendicular to the pressure plate 200.
[0047] Furthermore, in the embodiments of this application, such as Figures 2 to 4 As shown, the cell testing fixture also includes a nut 400. The nut 400 is threadedly connected to the toothed bar 300 and is located above the pressure plate 200 to lock the pressure plate 200.
[0048] Preferably, the pressure plate 200 is made of steel plate, which is sturdy and durable.
[0049] In summary, when using the battery cell testing fixture of this application to fix the battery cell, first place the battery cell to be tested on the base 100 (not shown in the battery cell diagram), then press the two pressure plates 200 onto both ends of the battery cell respectively, then pass the four toothed rods 300 through the pressure plates 200 and bolt them to the base 100, and finally tighten the nuts 400 to press the pressure plates 200 firmly against the battery cell. After the battery cell is fixed, the battery cell needle penetration equipment can be turned on for testing. During the test, because the battery cell is pressed and fixed by the pressure plates 200 (the base 100 and the pressure plates 200 clamp and fix it), the battery cell will not rise with the needle after the needle penetrates it.
[0050] Optionally, the toothed rod 300 and the steel plate surface are coated with anti-corrosion and explosion-proof paint so that the fixture will not rust and turn black after battery testing.
[0051] According to a second aspect of this application, a battery cell testing apparatus is provided, including the battery cell testing fixture described above.
[0052] According to the battery cell testing apparatus of this application, the battery cell testing apparatus further includes a needle, a compression head, and a battery cell as described above.
[0053] The needle is positioned above the battery cell and can move toward the battery cell to puncture it, thus performing a needle puncture test on the battery cell.
[0054] The extrusion head is positioned above the battery cell and can move toward the battery cell to extrude it for a compression test (the needle and extrusion head can be replaced).
[0055] It is worth mentioning that during the cell testing process, voltage lines and temperature sensing lines need to be placed on the surface of the cell to detect data such as temperature and voltage during the cell test. However, in the existing testing process, because the cell cannot be fixed, the voltage lines and temperature sensing lines placed on the surface of the cell are prone to falling off.
[0056] Therefore, the battery cell testing device of this application, due to the design of the battery cell testing fixture, can also press the voltage line and temperature sensing line while pressing the battery cell, thus preventing the voltage line and temperature sensing line from falling off.
[0057] In summary, the battery cell testing device of this application not only solves the problem of the battery cell rising with the needle / adhesion head sticking to the battery cell after the needle pierces into the battery cell during the battery cell testing process, but also greatly facilitates the fixation of thermocouples and voltage lines.
[0058] In the embodiments of this application, preferably:
[0059] like Figure 2 As shown, the thickness A of the pressure plate 200 is 15mm. (As indicated...) Figure 3 As shown, the thickness of the base 100 is 20mm. Figure 4 As shown, the length C of the base 100 is 1190mm, the width D of the base 100 is 510mm, the length E of the pressure plate 200 is 500mm, the width F of the pressure plate 200 is 30mm, and the distance H between the two threaded holes of the pressure plate 200 is 450mm. Figure 5 As shown, the diameter I of the threaded hole in the pressure plate 200 is φ9. The height of the threaded rod 300 is 400mm, and its diameter is φ8.
[0060] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The protection scope of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the scope of the technology disclosed in this application, or make equivalent substitutions for some of the technical features. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the protection scope of this application.
Claims
1. A battery cell testing fixture, characterized in that: The battery cell testing fixture comprises a base and two pressing plates; The top of the base can carry the battery cell to be tested; The two pressing plates are pressed on two ends of the battery core respectively; The pressing plate is bolted to the base to compress the battery core.
2. The battery cell testing fixture according to claim 1, characterized in that: The battery cell testing fixture also includes a tooth bar; The pressing plate is provided with a pressing plate threaded hole, and the base is provided with a base threaded hole; The thread at one end of the tooth rod is threadedly connected with the threaded hole of the pressing plate and the threaded hole of the base in sequence.
3. The battery cell testing fixture according to claim 2, characterized in that: There are four tooth rods; Both ends of each pressing plate are provided with a pressing plate threaded hole.
4. The battery cell testing fixture according to claim 2, characterized in that: The two pressing plates are arranged in parallel; The length direction of the battery core is perpendicular to the pressing plate.
5. The battery cell testing fixture according to claim 2, characterized in that: The battery cell testing fixture also includes a nut; The nut is threadedly connected to the threaded rod, and the nut is located above the pressing plate and is used to lock the pressing plate.
6. The battery cell testing fixture according to claim 1, characterized in that: The pressing plate is a steel plate.
7. A battery cell testing device, characterized in that: It comprises a battery cell testing fixture as described in any one of claims 1 to 6.
8. The battery cell testing device according to claim 7, characterized in that: The battery cell testing device also includes the battery cell; A detection wire is arranged on the surface of the battery cell; The pressing plate can press the detection wire.
9. The battery cell testing device according to claim 7, characterized in that: The battery cell testing device also includes a puncture needle; The pricking needle is arranged above the battery core, and the pricking needle can move toward the battery core to pierce the battery core.
10. The battery cell testing device according to claim 7, characterized in that: The battery cell testing device also includes an extrusion head; The extrusion head is arranged above the battery core, and the extrusion head can move toward the battery core to extrude the battery core.