Jig for measuring characteristics of battery cell for secondary battery and measuring device including the same

Abstract

To provide a device for measuring the characteristics of battery cells with which it is possible to minimize the impact of inductance when measuring the impedance of the battery cells.SOLUTION: A characteristics measurement jig according to the present disclosure comprises: a support table on which a battery cell is placed; an impedance measurement unit attached and removed to and from the cathode and anode terminals of the battery cell; and an elevating unit for lifting and lowering the impedance measurement unit. The impedance measurement unit includes a first and a second contact for the cathode contacted with the cathode terminal, a first and a second contact for the anode arranged facing the first and second contacts for the cathode, a first and a second current terminal for applying a current to the battery cell, and a first and a second voltage terminal for measuring the voltage of the battery cell. The elevating unit is constituted to lift and lower the first and second contacts for the cathode or the first and second contacts for the anode to and from the battery cell. The first current terminal is located facing the first voltage terminal, and the second current terminal is located facing the second voltage terminal.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a battery cell characteristic measuring device, and to a device for measuring the impedance of a battery cell. [Background technology]

[0002] Unlike primary batteries, rechargeable batteries are batteries that can be repeatedly charged and discharged. Small-capacity secondary batteries are used in small, portable electronic devices such as mobile phones, laptops, and camcorders. Large-capacity and high-density secondary batteries are used as motor drive power sources and for energy storage in hybrid and electric vehicles.

[0003] Such secondary batteries can be provided to consumers after undergoing characteristic tests to check the stability and performance of the battery cells. One example of such characteristic tests is an impedance test of the battery cells of the secondary battery.

[0004] When measuring the impedance of a battery cell, it is important to ensure that the measured impedance is not distorted due to increased inductance caused by the structure and arrangement of measurement equipment components (e.g., current lines, voltage lines).

[0005] The information disclosed above in the Background of the Invention section is intended to provide a better understanding of the background of the present invention and may include information that does not constitute prior art. Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention provides a battery cell characteristic measuring device that can minimize the influence of inductance when measuring the impedance of a battery cell.

[0007] However, the technical problems that the present invention aims to solve are not limited to the above-mentioned problems, and other problems not mentioned will be clearly understood by those skilled in the art from the description of the invention described below. [Means for solving the problem]

[0008] A battery cell characteristic measuring jig for a secondary battery according to one embodiment of the present invention includes a support base on which a battery cell including a positive terminal and a negative terminal is provided, an impedance measuring unit that is detachably attached to the positive terminal and the negative terminal of the battery cell, and a lifting unit that is connected to the impedance measuring unit, fixed to the support base, and configured to lift and lower the impedance measuring unit.

[0009] The impedance measuring unit includes a first positive electrode contact portion and a second positive electrode contact portion that are in contact with the positive electrode terminal, a first negative electrode contact portion and a second negative electrode contact portion that are in contact with the negative electrode terminal and are arranged opposite the first positive electrode contact portion and the second positive electrode contact portion, a first current terminal that is connected to the first positive electrode contact portion and is used to apply a current to the battery cell, a first voltage terminal that is connected to the second positive electrode contact portion and is used to measure the voltage of the battery cell, a second current terminal that is connected to the first negative electrode contact portion and is used to apply a current to the battery cell, and a second voltage terminal that is connected to the second negative electrode contact portion and is used to measure the voltage of the battery cell.

[0010] The lifting unit is connected to the first positive electrode contact portion and the second positive electrode contact portion or the first negative electrode contact portion and the second negative electrode contact portion, and is configured to lift and lower the first and second positive electrode contact portions or the first and second negative electrode contact portions relative to the battery cell.

[0011] The first current terminal is disposed opposite the first voltage terminal, and the second current terminal is disposed opposite the second voltage terminal.

[0012] The impedance measuring unit may include a first body to which the first and second positive electrode contact portions, the first current terminal, and the first voltage terminal are coupled, and a second body to which the first and second negative electrode contact portions, the second current terminal, and the second voltage terminal are coupled.

[0013] The first current terminal and the first voltage terminal may be arranged on the first body in a non-overlapping manner on the same line.

[0014] The second current terminal and the second voltage terminal may be arranged on the second body in a non-overlapping manner on the same line.

[0015] The area of ​​the first positive electrode contact portion may be equal to or greater than the area of ​​the second positive electrode contact portion.

[0016] The area of ​​the first negative electrode contact portion may be equal to or larger than the area of ​​the second negative electrode contact portion.

[0017] The second body is fixedly installed on the support base, and the first body is connected to the lifting unit.

[0018] The support base includes a bottom plate and a vertical plate extending from one side of the bottom plate, and the second body is disposed on the bottom plate.

[0019] The battery cells may be cylindrical.

[0020] According to another embodiment of the present invention, a battery cell characteristic measuring device for a secondary battery includes a housing having a chamber in which the above-described measuring tool is accommodated, and in which current wires for applying current to the first current terminal and the second current terminal, and voltage wires for sensing the voltage of the battery cell from the first voltage terminal and the second voltage terminal are provided.

[0021] According to the embodiment of the present invention, the current terminals and voltage terminals of the measurement jig are arranged so as not to overlap with each other, thereby making it possible to reduce inductance when measuring the impedance of a battery cell.

[0022] This reduces the resistance that impedes the flow of current and improves the distortion of the measured battery cell impedance. [Brief explanation of the drawings]

[0023] The drawings attached to this specification illustrate preferred embodiments of the present invention and, together with the detailed description of the invention described below, serve to further understand the technical concept of the present invention, so the present invention should not be interpreted as being limited only to the matters depicted in these drawings. [Figure 1] 1 is a perspective view that schematically illustrates a battery cell characteristic measuring device for a secondary battery according to an embodiment. [Figure 2] FIG. 1 is a perspective view schematically illustrating a measuring jig according to an embodiment. [Figure 3] FIG. 3 is a partially enlarged view of FIG. 2. [Figure 4] FIG. 1 is a perspective view showing a battery cell according to an embodiment; [Figure 5a] 1 is a diagram illustrating an impedance measuring unit according to an embodiment; [Figure 5b] 1 is a diagram illustrating an impedance measuring unit according to an embodiment; [Figure 5c] 1 is a diagram illustrating an impedance measuring unit according to an embodiment; [Figure 5d] 1 is a diagram illustrating an impedance measuring unit according to an embodiment; [Figure 6a] 10 is a graph illustrating the effect of the measuring jig according to the example. [Figure 6b] 10 is a graph illustrating the effect of the measuring jig according to the example. DETAILED DESCRIPTION OF THE INVENTION

[0024] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, the terms and words used in this specification and claims should not be construed as being limited to their ordinary or dictionary meanings, but should be construed as meanings and concepts that are consistent with the technical concept of the present invention, based on the principle that the inventor can appropriately define the concept of the term to best describe his or her invention. Therefore, it should be understood that the embodiments described in this specification and the configurations shown in the drawings are only some of the most preferred embodiments of the present invention and do not fully represent the technical concept of the present invention, and therefore various equivalents and modifications may exist as of the time of filing this application.

[0025] Also, as used in this specification, "comprise" and / or "comprising" specify the presence of stated shapes, numbers, steps, operations, members, elements and / or groups thereof, but do not exclude the presence or addition of one or more other shapes, numbers, operations, members, elements and / or groups.

[0026] In order to facilitate understanding of the invention, the accompanying drawings may not be drawn to scale, and the dimensions of some components may be exaggerated. In addition, the same reference numerals may be used to refer to the same components in different embodiments.

[0027] A statement that two comparison objects are "the same" means that they are "substantially the same." Therefore, "substantially the same" can include cases where there is a deviation that is considered to be a low level in the art, for example, a deviation within 5%. Furthermore, uniformity of some parameter in a given region can mean uniformity from an average perspective.

[0028] Although terms such as "first" and "second" are used to describe various components, it is understood that these components are not limited by these terms. These terms are used merely to distinguish one component from another, and unless otherwise specified, a first component may also be a second component.

[0029] Throughout the specification, unless specifically stated to the contrary, each element may be singular or plural.

[0030] When any structure is placed "on top (or bottom)" of a component or "above (or below)" a component, it can mean not only that the structure is placed in contact with the upper surface (or lower surface) of the component, but also that there may be another structure interposed between the component and any structure placed above (or below) the component.

[0031] Furthermore, when a component is described as being "on," "connected to," or "coupled to" another component, it should be understood that the components may be directly coupled or connected to each other, but that other components may be "intervening" between the components, or that each component may be "coupled," "coupled," or "connected" via other components.

[0032] As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. Also, the use of "may" when describing embodiments of the present disclosure refers to "one or more embodiments of the present disclosure." The use of phrases such as "one or more" and "one or more" before a list of elements modifies the list of elements as a whole, and not individual elements of the list.

[0033] Throughout the specification, "A and / or B" means A, B, or A and B, unless specifically stated to the contrary, and "C through D" means at least C and at most D, unless specifically stated to the contrary.

[0034] When syntax such as "at least one of A, B and C," "at least one of A, B or C," "at least one selected from the group of A, B and C," or "at least one selected from A, B and C" is used to specify a list of elements A, B, and C, the syntax can refer to any and all suitable combinations.

[0035] The term "use" may be considered synonymous with the term "utilize." As used herein, "substantially," "about," and similar terms may be used as terms of approximation rather than terms of degree, and are intended to account for inherent variations in measured or calculated values ​​that one of ordinary skill in the art would recognize.

[0036] In this specification, terms such as first, second, and third may be used to describe various elements, components, regions, layers, and / or sections, but these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms are used to distinguish one element, component, region, drawing layer, or cross section from another element, component, region, drawing layer, or cross section. Thus, a first element, component, region, tier, or section discussed below could be named a second element, component, region, tier, or section without departing from the teachings of the illustrative embodiments.

[0037] For ease of description, spatially relative terms such as "beneath," "below," "lower," "above," "upper," etc. may be used herein to describe the relationship of one element or feature to another element or feature as illustrated in the drawings. Spatially relative positions will be understood to encompass different orientations of the device during use or operation other than the orientation depicted in the figures. For example, if the device in the drawings is inverted, elements described as "beneath" or "below" would be understood to be "above" or "upper" of the other elements. Thus, the term "below" can encompass both the above and below orientations.

[0038] The terminology used herein is for the purpose of describing embodiments of the present disclosure and is not intended to be limiting of the present disclosure.

[0039] In the exemplary embodiments of the prismatic and pouch-type secondary batteries according to the embodiments of the present disclosure, one of the prismatic and pouch-type secondary batteries is selected, and the selected battery is described as having a general structure. In the case of a generally applicable technology, the general structure of the prismatic and pouch-type secondary battery is described.

[0040] FIG. 1 is a perspective view that schematically shows a battery cell characteristic measuring device for a secondary battery (hereinafter referred to as a measuring device for convenience) according to an embodiment of the present invention.

[0041] The measurement device 1 is configured to measure the characteristics of a secondary battery through a battery cell characteristic measuring jig 3 for a secondary battery (hereinafter referred to as the measuring jig for convenience) placed in a measurement chamber 10. In this embodiment, the measuring jig 3 is configured to measure the impedance of the battery cell.

[0042] The measurement chamber 10 can be provided in a plurality of units by a frame 14 disposed in the main body 12 of the measurement device 1 and a separation plate 16 connected to the frame 14 .

[0043] In addition, the main body 12 of the measuring device 1 is provided with an operation panel 18 for electrical operations such as adjusting the temperature and humidity inside the measurement chamber 10 and applying current to the battery cell 5 provided in the measuring jig 3 to measure the impedance of the battery cell 5.

[0044] Furthermore, the measurement chamber 10 is provided with current lines (not shown) for applying current to the battery cells 5 and voltage lines (not shown) for sensing voltage from the battery cells 5, which are electrically connected to the measurement jigs 3, respectively.

[0045] Fig. 2 is a perspective view that schematically shows a measuring jig according to an embodiment, and Fig. 3 is a partially enlarged view of Fig. 2. As shown in Figs. 2 and 3, the measuring jig 3 of the embodiment includes a support base 30 on which a battery cell 5 is placed.

[0046] In this embodiment, the battery cell 5 may be a cylindrical battery cell, as can be seen from Fig. 4. The battery cell 5 is constructed by incorporating an electrode assembly including a positive electrode, a negative electrode, and a separator into a cylindrical case 50a, and sealing the opening of the case 50a with a cap assembly 52a electrically connected to the positive electrode. A protruding portion of the cap assembly 52a, such as a cap included in the cap assembly 52a, serves as the positive electrode terminal 520a of the battery cell 5, and one side portion of the case 50a (e.g., the bottom surface of the case) electrically connected to the negative electrode of the electrode assembly serves as the negative electrode terminal 500a of the battery cell 5.

[0047] 2 and 3, the support base 30 on which the battery cells 5 are placed to undergo impedance measurement includes a bottom plate 300a and a vertical plate 302a extending from one edge of the bottom plate 300a. A first section (e.g., a positive electrode contact and a first terminal, which will be described later) of the impedance measurement unit 34 for measuring the impedance of the battery cells 5 is disposed on the vertical plate 302a, and a second section (e.g., a negative electrode contact and a second terminal, which will be described later) of the impedance measurement unit 34 is disposed on the bottom plate 300a.

[0048] The number of impedance measuring units 34 arranged on the support base 30, in other words, the number of battery cells 5, can be adjusted appropriately. In this embodiment, a battery cell 5 is provided for each of the two impedance measuring units 34 (only one battery cell is shown in FIG. 2 for convenience), but this does not limit the structure of the measurement jig 3.

[0049] Additionally, an elevation unit 36 ​​configured to be able to elevate and lower the first section of the impedance measuring unit 34 while being attached to and detached from the terminal of the battery cell 5, for example, the positive terminal 520a, is fixedly disposed on the vertical plate 302a.

[0050] The impedance measuring unit 34 includes a positive electrode contact portion 340a that comes into contact with the positive electrode terminal 520a and a negative electrode contact portion 342a that comes into contact with the negative electrode terminal 500a.

[0051] 5a to 5d are views illustrating the positive electrode contact part 340a. Referring to FIGS. 5a to 5d, the positive electrode contact part 340a includes a first body 3400a having a generally rectangular parallelepiped shape. The first body 3400a includes a lower body 3402a and an upper body 3404a that are detachably connectable to each other. The lower body 3402a is provided with first and second positive electrode contact parts 3406a and 3408a spaced apart from each other, which respectively contact the positive electrode terminal 520a. The first and second positive electrode contact parts 3406a and 3408a are provided on the lower body 3402a with their tips exposed to the outside of the lower body 3402a and are movable up and down within the lower body 3402a.

[0052] A first current terminal 3410a and a first voltage terminal 3412a are connected to the first positive electrode contact portion 3406a and the second positive electrode contact portion 3408a, respectively. The first current terminal 3410a is connected to the first positive electrode contact portion 3406a so that a current (AC) is applied to the battery cell 5. The first voltage terminal 3412a is connected to the second positive electrode contact portion 3408a so that a voltage from the battery cell 5 is measured.

[0053] In this embodiment, the first current terminal 3410a and the first voltage terminal 3412a each include rod-shaped lead portions 3414a and 3416a arranged opposite each other, and cylindrical connection portions 3418a and 3420a connected vertically to one end of the lead portions 3414a and 3416a.

[0054] In this embodiment, the lead portions 3414a and 3416a are arranged parallel to each other on a non-collinear line. That is, the first positive electrode contact portion 3406a and the second positive electrode contact portion 3408a are arranged approximately at the center of the first body 3400a, and the lead portions 3414a and 3416a are arranged on the first body 3400a so that their respective connection portions 3418a and 3420a face each other. As a result, the angle between the lead portions 3414a and 3416a, in other words, the angle between the first current terminal 3410a and the first voltage terminal 3412a, can be considered to be 180°. This arrangement of the first current terminal 3410a and the first voltage terminal 3412a minimizes the overlapping area between the terminals, reducing the increase in inductance due to a magnetic field and effectively preventing distortion of the measured impedance.

[0055] In this embodiment, the leads 3414a, 3416a are non-collinear, as described above, although in other embodiments the leads may be collinear.

[0056] Furthermore, in this embodiment, the lead portions 3414a, 3416a are arranged at an angle of 180° as described above, but they may also be arranged at an angle selected between 90° and 180°.

[0057] A current line (not shown) for applying current to the first current terminal 3410a and a voltage line (not shown) for sensing the voltage of the battery cell 5 from the first voltage terminal 3412a are connected to the connection portions 3418a and 3420a, respectively.

[0058] A portion of the lead portions 3414a, 3416a including the connection portions 3418a, 3420a is exposed outside the first body 3400a, and the remaining portion of the lead portions 3414a, 3416a including the first positive electrode contact portion 3406a and the second positive electrode contact portion 3408a connected to the other end of the lead portions 3414a, 3416a is arranged within the first body 3400a.

[0059] At the other ends of the lead portions 3414a, 3416a to which the first positive electrode contact portion 3406a and the second positive electrode contact portion 3408a are connected, springs 3422a, 3424a are installed facing the first and second positive electrode contact portions 3406a, 3408a. These springs 3422a, 3424a enable the first and second positive electrode contact portions 3406a, 3408a to elastically contact the positive electrode terminal 520a by the force exerted by the lifting portion described below.

[0060] In this embodiment, the area of ​​the first positive electrode contact portion 3406a may be equal to or larger than the area of ​​the second positive electrode contact portion 3408a in order to reduce the contact resistance of the current terminal and reduce heat generation when actual current flows.

[0061] Meanwhile, the negative electrode contact portion 342a is configured similarly to the positive electrode contact portion 340a. That is, the negative electrode contact portion 342a also includes a second body (lower body / upper body), first and second negative electrode contact portions, a second current terminal (lead portion and connection portion), a second voltage terminal (lead portion and connection portion), and a spring. Here, the first and second negative electrode contact portions contact the negative electrode terminal 500a of the battery cell 5. A detailed description thereof will be substituted for the description of the positive electrode contact portion 340a described above.

[0062] The impedance measuring unit 34 configured in this manner is connected to an elevator unit 36 ​​fixedly installed on the vertical plate 302a of the support base 30 so as to be movable up and down.

[0063] As can be seen from FIG. 2, in this embodiment, the lifting unit 36 ​​is configured to lift and lower the positive electrode contact portion 340a by a screw method.

[0064] To this end, the lifting unit 36 ​​includes a pressing unit 360a connected (e.g., screwed) to the positive electrode contact unit 340a, a screw-threaded lifting shaft 362a connected to the pressing unit 360a, a mounting base 364a fixed to the vertical plate 302a and connected to the lifting shaft 362a so that the lifting shaft 362a can be lifted and guided by the screw method, and a handle 366a connected to one end of the lifting shaft 362a. Meanwhile, the negative electrode contact unit 342a is fixed to the bottom plate 300a of the support base 30.

[0065] As a result, when the user rotates the handle portion 366a clockwise while the battery cell 5 is placed on the negative electrode contact portion 342a so that the negative electrode terminal 500a of the battery cell 5 contacts the first and second negative electrode contact portions, the lifting shaft 362a descends, and in conjunction with this, the pressing portion 360a and the positive electrode contact portion 340a also descend.

[0066] As a result, the first positive electrode contact portion 3406a and the second positive electrode contact portion 3408a can come into contact with the positive electrode terminal 520a of the battery cell 5. In this state, a current is applied to the first current terminal 3410a and the second current terminal, and the voltage is sensed via the first voltage terminal 3412a and the second current terminal, thereby measuring the impedance of the battery cell 5. At this time, the first current terminal 3410a and the first voltage terminal 3412a are arranged substantially in a line so as not to overlap each other, and the second current terminal and the second voltage terminal are also arranged substantially in a line so as not to overlap each other, thereby reducing an increase in inductance due to a magnetic field and enabling the impedance of the battery cell 5 to be measured without distortion.

[0067] When the impedance measurement is completed, the user may rotate the handle portion 366a counterclockwise to separate the first positive electrode contact portion 3406a and the second positive electrode contact portion 3408a from the positive electrode terminal 520a of the battery cell 5, and to separate the first and second negative electrode contact portions from the negative electrode terminal 500a of the battery cell 5. Thereafter, the battery cell for which the impedance measurement has been completed is replaced with a new battery cell for which impedance measurement is to be performed.

[0068] Meanwhile, in this embodiment, the positive electrode contact portion 340a is raised and lowered by the lifting unit 36, and the negative electrode contact portion 342a is fixed to the support base 30, but the reverse is also possible. That is, the negative electrode contact portion 342a may be raised and lowered by the lifting unit 36, and the positive electrode contact portion 340a may be fixed to the support base 30.

[0069] 6a and 6b are graphs showing the results of measuring the charge exchange resistance (Rct) and inductance of a battery cell using a measurement jig according to the example and a measurement jig according to the comparative example, respectively. The measurement jig according to the comparative example differs from the example in that the first and second current terminals and the first and second voltage terminals for the positive and negative terminals of the battery cell are configured to overlap each other and be integrated. The battery cells measured using each measurement jig are the cylindrical battery cells shown in FIG. 4.

[0070] As can be seen from Figures 6a and 6b, when measuring the impedance of a battery cell using the measurement jig of the embodiment, the improved current and voltage terminals reduce inductance, making it possible to measure impedance without (or with improved) distortion of the charge exchange resistance (Rct).

[0071] Although the present invention has been described above using limited examples and drawings, the present invention is not limited thereto, and it goes without saying that various modifications and variations can be made by a person having ordinary skill in the art to which the present invention pertains within the technical spirit of the present invention and the equivalent scope of the claims set forth below. [Explanation of symbols]

[0072] 3: Measuring jig 5: Battery cell 30: Support stand 34: Impedance measurement section 36: Lifting section 340a: Positive electrode contact part 342a: Negative electrode contact part 3406a: First positive electrode contact part 3408a: Contact part for second positive electrode 3410a: 1st terminal for current 3412a: First terminal for voltage 3414a, 3416a: Lead section 3418a, 3420a: Connection parts

Claims

1. a support base on which a battery cell including a positive terminal and a negative terminal is provided; an impedance measuring unit that includes a first positive electrode contact portion and a second positive electrode contact portion that are in contact with the positive electrode terminal, a first negative electrode contact portion and a second negative electrode contact portion that are in contact with the negative electrode terminal and are arranged opposite the first positive electrode contact portion and the second positive electrode contact portion, a first current terminal that is connected to the first positive electrode contact portion and is used to apply a current to the battery cell, a first voltage terminal that is connected to the second positive electrode contact portion and is used to measure a voltage of the battery cell, a second current terminal that is connected to the first negative electrode contact portion and is used to apply a current to the battery cell, and a second voltage terminal that is connected to the second negative electrode contact portion and is used to measure a voltage of the battery cell, and is attachable to and detachable from the positive electrode terminal and the negative electrode terminal of the battery cell; an elevating unit fixed to the support base and connected to the first positive electrode contact portion, the second positive electrode contact portion or the first negative electrode contact portion, and the second negative electrode contact portion, and configured to elevate and lower the first positive electrode contact portion, the second positive electrode contact portion or the first negative electrode contact portion, and the second negative electrode contact portion relative to the battery cell; Including, The first current terminal is disposed opposite the first voltage terminal, and the second current terminal is disposed opposite the second voltage terminal.

2. The impedance measurement unit a first body to which the first positive electrode contact portion, the second positive electrode contact portion, the first current terminal, and the first voltage terminal are coupled; a second body to which the first negative electrode contact portion, the second negative electrode contact portion, the second current terminal, and the second voltage terminal are coupled; The battery cell characteristic measuring jig for a secondary battery according to claim 1 , comprising:

3. The battery cell characteristic measuring jig for a secondary battery according to claim 2 , wherein the first current terminal and the first voltage terminal are arranged on the first body in a non-overlapping manner on the same line.

4. The battery cell characteristic measuring jig for a secondary battery according to claim 2 , wherein the second current terminal and the second voltage terminal are arranged on the second body in a non-overlapping manner on the same line.

5. 3. The battery cell characteristic measuring jig for a secondary battery according to claim 2, wherein an area of ​​the first positive electrode contact portion is equal to or larger than an area of ​​the second positive electrode contact portion.

6. 3. The battery cell characteristic measuring jig for a secondary battery according to claim 2, wherein an area of ​​the first negative electrode contact portion is equal to or larger than an area of ​​the second negative electrode contact portion.

7. The battery cell characteristic measuring jig for a secondary battery according to claim 2 , wherein the second body is fixedly installed on the support base, and the first body is connected to the lifting unit.

8. The battery cell characteristic measuring fixture of claim 7 , wherein the support base includes a bottom plate and a vertical plate extending from one side of the bottom plate, and the second body is disposed on the bottom plate.

9. The battery cell characteristic measuring jig for a secondary battery according to claim 1 , wherein the battery cell is cylindrical.

10. 10. A device for measuring characteristics of a battery cell for a secondary battery, comprising: a housing having a chamber in which the measuring jig according to any one of claims 1 to 9 is housed, and in which current wires for applying current to the first current terminal and the second current terminal, and voltage wires for sensing the voltage of the battery cell from the first voltage terminal and the second voltage terminal are provided.

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