Battery module measuring jig

Abstract

The measuring tool according to the embodiment is a measuring jig for a battery module, and includes a support base disposed across the battery module and having a plurality of fastening portions for fastening to the measuring tool, and a fixing plate connected to the support base and supported by the battery module.

Description

[Technical Field]

[0001] [CROSS-REFERENCE TO RELATED APPLICATIONS] This application claims the benefit of priority based on Korean Patent Application No. 10-2023-0003718, filed January 10, 2023, the entire contents of which are incorporated herein by reference.

[0002] The present invention relates to a measuring jig, and more particularly to a jig for measuring a sample of a battery module. [Background technology]

[0003] Generally, secondary batteries can be classified according to the shape of their exterior packaging into can-type secondary batteries, in which the electrode assembly is housed in a metal can, and pouch-type secondary batteries, in which the electrode assembly is housed in a pouch made of an aluminum laminate sheet.

[0004] In the case of secondary batteries used in small devices, two to three battery cells are arranged, but in the case of secondary batteries used in medium to large devices such as automobiles, multiple battery cells are electrically connected and provided to the required device as a battery module.

[0005] Before shipping, these battery modules undergo characteristic testing to verify their lifespan. For example, the change in the overall width of the cell module is measured to check the degree of degradation or increase in resistance after each specific cycle.

[0006] However, up until now, workers have had to manually measure the overall width at each measurement point using a measuring tool (e.g., a vernier caliper). This not only takes time, but also leaves no way to maintain flatness relative to the measuring tool, which can lead to uneven flatness and inaccurate measurement results.

[0007] When this is combined with the hand shaking of the operator handling the measuring instrument, the reliability of the measurement results is further reduced. Summary of the Invention [Problem to be solved by the invention]

[0008] The problem to be solved by the present invention is to improve the reliability of measurements of battery modules.

[0009] However, the problems to be solved by the embodiments of the present invention are not limited to the above-mentioned problems, and can be variously expanded within the scope of the technical ideas included in the present invention. [Means for solving the problem]

[0010] According to an embodiment of the present invention, there is provided a measuring jig for a battery module, the measuring jig including: a support base disposed across the battery module and having a plurality of fastening portions for fastening to the measuring jig; and a fixing plate connected to the support base and supported by the battery module.

[0011] The fastening portion may include a groove extending along the width direction of the support base.

[0012] The grooves may be arranged in a plurality at predetermined intervals along the length of the support base.

[0013] The width of each of the plurality of grooves may be the same.

[0014] The fixing plates may be slidably connected to both ends of the support base, and the fixing plates may be provided with contact members for closely contacting the fixing plates to the battery modules.

[0015] The fixing plate may be in close contact with the end plate of the battery module.

[0016] The fixing plate may have a rectangular shape, and the contact member may be disposed opposite the fixing plate with the support base therebetween.

[0017] The contact member may include a bracket fixed to the fixing plate and screwed to the end plate.

[0018] The measuring tool can measure the overall width of the battery module.

[0019] The measuring device may be a vernier caliper. [Effects of the Invention]

[0020] According to the embodiment of the present invention, when measuring the characteristics of a battery module, it is possible to measure the characteristics of the battery module without shaking caused by manual operation such as hand tremors, thereby improving the reliability of the measurement, shortening the measurement time, and improving work productivity.

[0021] The effects of the present invention are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims. [Brief explanation of the drawings]

[0022] [Figure 1] 1 is a perspective view showing a battery module measuring jig according to an embodiment of the present invention; [Figure 2] 1 is a perspective view illustrating a state in which a battery module measuring jig according to an embodiment of the present invention is installed on a battery module; [Figure 3] 1 is a front view illustrating a state in which a battery module measuring jig according to an embodiment of the present invention is installed on a battery module. DETAILED DESCRIPTION OF THE INVENTION

[0023] The present invention will now be described in detail with reference to the accompanying drawings, in which various embodiments of the present invention can be easily implemented by those skilled in the art. The present invention can be implemented in several different forms and is not limited to the examples described herein.

[0024] In order to clearly describe the present invention, parts that are not relevant to the description will be omitted and the same reference numerals will be used throughout the specification to refer to the same or similar components.

[0025] In addition, the size and thickness of each component shown in the drawings are arbitrarily shown for the convenience of explanation, and the present invention is not necessarily limited to those shown in the drawings. In the drawings, thicknesses are exaggerated to clearly show multiple layers and regions. In the drawings, thicknesses of some layers and regions are exaggerated for the convenience of explanation.

[0026] Furthermore, when a layer, film, region, plate, or other part is said to be "on" or "above" another part, this includes not only the case where it is "directly above" that other part, but also the case where there is another part in between. Conversely, when a part is said to be "directly above" another part, it means that there is no other part in the middle. Furthermore, being "on" or "above" a reference part means being located above or below the reference part, and does not necessarily mean being located "above" or "above" facing the opposite direction of gravity.

[0027] Furthermore, throughout the specification, when a part "comprises" a certain element, it does not mean that it excludes other elements, but that it may further include other elements, unless otherwise specified.

[0028] Also, throughout this specification, "on a plane" means when the target part is viewed from above, and "on a cross section" means when the target part is cut vertically and viewed from the side.

[0029] FIG. 1 is a perspective view showing a battery module measuring jig (hereinafter referred to as the measuring jig for convenience) according to an embodiment of the present invention, and FIG. 2 is a perspective view showing the state in which the measuring jig according to the embodiment of the present invention is installed on a battery module.

[0030] The measuring jig according to the embodiment is configured to be able to measure the characteristics of the battery module, for example, the overall width.

[0031] As shown in FIG. 1, the measuring jig 1 includes a support base 10 and a fixing plate 12 connected to both ends of the support base 10 .

[0032] As can be seen from FIG. 2, when measuring the overall width of the battery module 2, the support base 10 is arranged across the battery module 2 along the length direction (x) of the battery module 2, and for this reason, the support base 10 has a body 100 in the shape of a long plate.

[0033] A rectangular fixing plate 12 is slidably connected to the support base 10. To this end, each fixing plate 12 is formed with a through-hole 120 through which the support base 10 can pass, and stoppers 122 larger than the through-holes 120 are disposed on both ends of the support base 10. This allows the fixing plate 12 to slide on the support base 10 and will not come off the support base 10.

[0034] As can be seen from FIG. 2, both of these fixing plates 12 can be supported by being in close contact with the battery module 2, for example, by being in close contact with the end plates 20 of the battery module 2, when the battery module 2 is measured.

[0035] In this embodiment, both of the two fixed plates 12 are slidably connected to the support base 10, but it is also possible to have one of the fixed plates fixed to the support base and only the other fixed plate slidably connected to the support base.It is also possible to have both fixed plates fixed to the support base.

[0036] In this embodiment, the battery module 2 can be manufactured by housing a battery cell stack (not shown) in a module frame 22 and then joining end plates 20 to the open portions of the module frame 22. Of course, the configuration of the battery module is not limited to the above configuration. Any configuration is possible as long as the battery module has a full width and / or full length.

[0037] A plurality of fastening portions to which measuring tools are fastened are arranged on the main body 100 of the support base 10. In this embodiment, the measuring tool is provided on the vernier caliper 3, and the fastening portions are configured as grooves 110 extending in the main body 100 along the width direction (y) of the support base 10.

[0038] A plurality of grooves 110 may be arranged on the main body 100 at predetermined intervals, and in this embodiment, four grooves 110 are provided on the main body 100. Of course, the number of grooves 110 is not necessarily limited to this. The positions of the grooves 110 on the main body 100 may be set in consideration of the measurement points when the battery module 2 is actually measured using the measurement jig 1.

[0039] In this embodiment, the widths (w) of the plurality of grooves 110 are configured to be the same, but this is not necessarily limited to this. The widths (w) may all be configured to be different or may be configured to be partially the same.

[0040] Meanwhile, both fixing plates 12 are provided with contact members for tightly fixing the fixing plates 12 to the battery modules 2 when the battery modules 2 are actually measured using the measurement jig 1. In this embodiment, the contact members are provided so that the fixing plates 12 are tightly fixed to the end plates 20.

[0041] In this embodiment, the contact member can be configured as a bracket 14 that is fixed to the inner surface of the fixing plate 12 by, for example, screwing and that is screwed to the fixing portion 200 of the end plate 20. The bracket 14 may be disposed opposite the fixing plate 12 with the support base 10 therebetween. This type of contact member is merely an example, and any configuration may be used as long as it can closely fix the fixing plate 12 to the battery module 2, for example, to the end plate 20.

[0042] Referring to FIG. 3, when measuring the characteristics (e.g., overall width) of the battery module 2 using the measuring jig 1 according to the embodiment, each of the two fixing plates 12 is slid to fit the opening formed in the bracket 14 with the screw hole formed in the fixing portion 200 of the end plate 20, and is tightly attached to the end plate 20.

[0043] In this state, the fixing plate 12 can be fixed to the end plate 20 by threading the bolt 16 through the opening of the bracket 14 into the threaded hole of the fixing portion 200 of the end plate 20 .

[0044] In this state, the overall width of the battery module 2 can be measured using the vernier calipers 3, which are measuring tools fastened to the multiple grooves 110 of the support base 10. Because the measuring tool 1 is stably and firmly fastened to the battery module 2, the overall width measurement of the battery module 2 can be performed stably while preventing the operator's hands from shaking. Most importantly, the overall widths of multiple parts of the battery module 2 can be measured simultaneously, and accurate parts can be measured each time even if the battery module being measured is changed. This improves the reliability of the measurement.

[0045] Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements made by those skilled in the art using the basic concept of the present invention defined in the following claims also fall within the scope of the present invention. [Explanation of symbols]

[0046] 1 Measuring jig 2 Battery Module 10 Support stand 12 Fixed plate 14 Bracket 16 volts 100 units 110 Groove

Claims

1. A measuring jig for a battery module, a support base disposed across the battery module and having a plurality of fastening portions for fastening to a measuring tool; and a measuring jig including a fixing plate connected to the support base and supported by the battery module;

2. The measuring jig according to claim 1 , wherein the fastening portion includes a groove extending along the width direction of the support base.

3. The measuring jig according to claim 2 , wherein a plurality of the grooves are arranged at predetermined intervals along the length of the support base.

4. 4. The measuring jig according to claim 3, wherein each of the plurality of grooves has the same width.

5. 5. The measuring jig according to claim 1, wherein the fixing plate is slidably connected to both ends of the support base, and the fixing plate is provided with an adhesion member for tightly adhering the fixing plate to the battery module.

6. The measuring jig according to claim 5 , wherein the fixing plate is in close contact with an end plate of the battery module.

7. The measuring jig according to claim 5 , wherein the fixed plate has a rectangular shape, and the contact member is disposed opposite the fixed plate with the support base therebetween.

8. The measuring jig according to claim 6 , wherein the contact member includes a bracket that is fixed to the fixed plate and is screwed to the end plate.

9. The measuring tool according to claim 1 , wherein the measuring tool measures an overall width of the battery module.

10. The measuring tool according to claim 1 , wherein the measuring tool is a vernier caliper.

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