Measuring jig for battery module

Abstract

A measuring instrument according to an embodiment is a measuring jig for a battery module, and includes: a support positioned across the battery module and having a plurality of fastening portions for fastening with the measuring instrument; and a fixing plate connected to the support and supported on the battery module.

Description

Technical Field

[0001] Cross - Reference to Related Applications

[0002] This application claims priority and the benefit of Korean Patent Application No. 10 - 2023 - 0003718, filed with the Korean Intellectual Property Office on January 10, 2023, the entire contents of which are incorporated herein by reference.

[0003] The present disclosure relates to a measuring jig, and more particularly to a jig for measuring a sample of a battery module. Background Art

[0004] Generally, according to the shape of the external material, secondary batteries can be classified into can - type secondary batteries in which an electrode assembly is built into a metal can and pouch - type secondary batteries in which an electrode assembly is built into a pouch made of an aluminum laminate.

[0005] In the case of secondary batteries for small devices, 2 to 3 battery cells are arranged, but in the case of secondary batteries for medium - to - large devices such as automobiles, a battery module in which a plurality of battery cells are electrically connected is provided to the required device.

[0006] The battery module undergoes a characteristic test before shipment to verify its lifespan.

[0007] For example, the change in the total width of the battery module is measured as a way to check the degree of deterioration and the increase in resistance at each specific cycle.

[0008] However, so far, the situation has been that workers manually measure the overall width at each measurement point using a measuring instrument (e.g., a vernier caliper). In this case, since a large amount of working time is required and there is no means to maintain the flatness of the measuring instrument, there is a high possibility that the measurement result is inaccurate due to non - uniform flatness.

[0009] When the hand of the worker operating the measuring instrument trembles, the reliability of the measurement result becomes even lower. Summary of the Invention

[0010] [Technical Problem]

[0011] The present disclosure attempts to improve the reliability of the measurement of the battery module.

[0012] However, the problems to be solved by the exemplary embodiments of the present invention are not limited to the above problems, and various extensions can be made within the scope of the technical concept included in the present invention.

[0013] [Technical Solution]

[0014] According to one embodiment, a measuring jig for a battery module includes: a support member that spans and is placed over the battery module and has a plurality of fastening portions for fastening to a measuring instrument; and a fixing plate that is connected to the support member and supports on the battery module.

[0015] The fastening portion may include a groove extending along the width direction of the support member.

[0016] A plurality of the grooves may be arranged at a preset interval along the length direction of the fastening portion.

[0017] Each of the plurality of grooves may have the same width.

[0018] The fixing plate may be slidably connected to both ends of the support member, and the fixing plate may be provided with a contact member for making the fixing plate in close contact with the battery module.

[0019] The fixing plate may be in close contact with the end plate of the battery module.

[0020] The fixing plate may have a square shape, and the contact member may be placed to face the fixing plate with the support member between the contact members.

[0021] The contact member may be fixed to the fixing plate and include a bracket screwed to the end plate.

[0022] The measuring instrument may measure the full width of the battery module.

[0023] The measuring instrument may be a vernier caliper.

[0024] [Advantageous Effects]

[0025] According to an embodiment of the present disclosure, when measuring the characteristics of a battery module, the characteristics of the battery module can be measured without being affected by the shaking caused by the hand tremors during the manual work of the worker, thereby improving the reliability of the measurement. In addition, the work productivity can be improved by shortening the measurement time.

[0026] The effects of the present disclosure are not limited to the above effects. That is, those skilled in the art can clearly understand other effects not described from the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a perspective view showing a measuring jig for a battery module according to an embodiment of the present disclosure.

[0028] Figure 2 is a perspective view showing a state in which a measuring jig for a battery module according to an embodiment of the present disclosure is mounted on a battery module.

[0029] Figure 3It is a front view showing the state in which a measuring jig for a battery module according to an embodiment of the present disclosure is mounted on the battery module. Detailed Description of the Invention

[0030] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those skilled in the art to which the present invention pertains can easily practice the present invention. However, the present invention can be implemented in various different forms and is not limited to the exemplary embodiments provided herein.

[0031] To clearly describe the present invention, parts irrelevant to the description will be omitted, and throughout this specification, the same or similar components will be denoted by the same reference numerals.

[0032] In addition, for ease of description, the dimensions and thicknesses of each component shown in the drawings are arbitrarily indicated, and the present invention is not necessarily limited to those shown. In the drawings, the thicknesses of layers, films, panels, regions, etc. are exaggerated for clarity. In addition, in the drawings, the thicknesses of some layers and regions have been exaggerated for ease of illustration.

[0033] In addition, it should be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or there can also be an intermediate element. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element. Additionally, when an element is referred to as being "on" a reference element, it can be positioned on or under the reference element and is not necessarily positioned on the reference element in a direction opposite to gravity.

[0034] In addition, unless explicitly described to the contrary, the word "comprising" and variations such as "comprises" or "including" will be understood to imply the inclusion of the stated elements but not the exclusion of any other elements.

[0035] In addition, throughout the specification, the word "plan view" refers to the view when observing the target from the top, and the word "cross-sectional view" refers to the view when observing the cross-section of the target taken vertically from the side.

[0036] Figure 1 It is a perspective view showing a measuring jig (hereinafter referred to as a measuring jig for convenience) for a battery module according to an embodiment of the present disclosure. Figure 2 It is a perspective view of a measuring jig according to an embodiment of the present invention mounted in a battery module.

[0037] The measuring jig according to the present embodiment is configured to measure characteristics of the battery module, such as the overall width.

[0038] As Figure 1 shown, the measuring jig 1 includes a support member 10 and fixing plates 12 connected to both ends of the support member 10.

[0039] From Figure 2 As can be seen, when measuring the full width of the battery module 2, the support member 10 is placed across the battery module 2 along the longitudinal direction x of the battery module 2. To this end, the support member 10 has a body 100 in the shape of a long plate material.

[0040] The square fixing plates 12 are slidably connected to the support member 10. To this end, through holes 120 through which the support member 10 can pass are formed in each of the fixing plates 12, and stoppers 122 having dimensions larger than the through holes 120 are placed at both ends of the support member 10. Accordingly, the fixing plates 12 can slide on the support member 10 but do not separate from the support member 10.

[0041] From Figure 2 As can be seen, when measuring the battery module 2, the two fixing plates 12 can be supported in close contact with the battery module 2, for example, in close contact with the end plate 20 of the battery module 2.

[0042] In this embodiment, both of the two fixing plates 12 are slidably coupled to the support member 10, but one fixing plate is fixed to the support member and only the other fixing plate can be slidably coupled to the support member. A structure in which the two fixing plates are fixed to the support member is also possible.

[0043] In this embodiment, the battery module 2 can be manufactured by receiving a battery cell stack (not shown) in the module frame 22 and then coupling the end plate 20 to the open portion of the module frame 22. Of course, the configuration of the battery module is not limited to the above configuration. Any structure is possible as long as the battery module has a full width and / or a full length.

[0044] The body 100 of the support member 10 is provided with a plurality of fastening portions to which a measuring instrument can be fastened. In this embodiment, the measuring instrument is provided as a vernier caliper 3, and the fastening portions are composed of grooves 110 extending in the width direction y of the support member 10 to the body 100.

[0045] The plurality of grooves 110 can be arranged on the body 100 with a preset interval therebetween. In this embodiment, four grooves 110 are provided on the body 100. Of course, the number of the grooves 110 is not necessarily limited thereto. When actually using the measuring jig 1 to measure the battery module 2, the positions of the grooves 110 on the body 100 can be set in consideration of the measurement points.

[0046] In this embodiment, each of the plurality of grooves 110 has the same width w, but is not limited thereto. Each width w can be completely different or can be partially equivalent.

[0047] Meanwhile, both fixing plates 12 are provided with contact members for fixing the fixing plates 12 in close contact with the battery module 2 when actually measuring the battery module 2 through the measuring jig 1. In this embodiment, the contact members are arranged such that the fixing plates 12 can contact and be fixed to the end plate 20.

[0048] In this embodiment, the contact members can be fixed to the inner surface of the fixing plate 12, for example, by screwing, or can be composed of brackets 14 screwed to the fixing portion 200 of the end plate 20. The brackets 14 can be placed to face the fixing plate 12 when the support member 10 is between the brackets 14. This contact member is merely an example, and any configuration can be used as long as the fixing plate 12 can be in close contact with the battery module 2 (e.g., the end plate 20) and be fixed to the battery module 2 (e.g., the end plate 20).

[0049] Refer to Figure 3 , when measuring the characteristics (e.g., full width) of the battery module 2 using the measuring jig 1 according to the embodiment, each of the two fixing plates 12 slides so that the opening formed in the bracket 14 and the threaded hole formed in the fixing portion 200 of the end plate 20 are aligned, and thus is in close contact with the end plate 20. In this state, the fixing plate 12 can be fixed to the end plate 20 by screwing a bolt 16 through the opening of the bracket 14 into the threaded hole of the fixing portion 200 of the end plate 20.

[0050] In this state, the full width of the battery module 2 can be measured using a vernier caliper 3, which is a measuring instrument fastened to each of the plurality of grooves 110 of the support member 10. And since the measuring jig 1 is fastened to the battery module 2 in a stable and firm state, the full width measurement of the battery module 2 can be stably achieved while preventing the tremor of the worker's hand. In particular, the full width of multiple parts of the battery module 2 can be measured simultaneously, and even if the measured battery module changes, the precise part can be measured each time. Therefore, the reliability of the measurement can be improved.

[0051] Although the exemplary embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto. That is, several modifications and changes made by those of ordinary skill in the art using the basic concepts of the present invention defined in the claims fall within the scope of the present invention.

[0052] [Description of Reference Numerals]

[0053] 1: Measuring jig

[0054] 2: Battery module

[0055] 10: Support member

[0056] 12: Fixing plate

[0057] 14: Bracket

[0058] 16: Bolt

[0059] 100: Body

[0060] 110: Groove

Claims

1. A measuring fixture for a battery module, comprising: A support member that spans the placement of the battery module and has a plurality of fastening portions for fastening to a measuring instrument; And A fixing plate that is connected to the support member and is supported on the battery module.

2. The measuring fixture according to claim 1, wherein: The fastening portion includes a groove extending in the width direction of the support member.

3. The measuring fixture according to claim 2, wherein: A plurality of the grooves are arranged at a preset interval in the length direction of the fastening portion.

4. The measuring fixture according to claim 3, wherein: Each of the plurality of grooves has the same width.

5. The measuring fixture according to claim 1, wherein: The fixing plate is slidably connected to both ends of the support member, and the fixing plate is provided with a contact member for making the fixing plate closely contact the battery module.

6. The measuring fixture according to claim 5, wherein: The fixing plate closely contacts the end plate of the battery module.

7. The measuring fixture according to claim 5, wherein: The fixing plate has a square shape, and the contact member is placed to face the fixing plate when the support member is between the contact members.

8. The measuring fixture according to claim 5, wherein: The contact member is fixed to the fixing plate and includes a bracket screwed to the end plate.

9. The measuring fixture according to claim 1, wherein: The measuring instrument measures the full width of the battery module.

10. The measuring fixture according to claim 1, wherein: The measuring instrument is a vernier caliper.

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