Experimental Jig

Abstract

An experimental jig according to an embodiment of the present invention may include a first plate, a second plate spaced a predetermined distance from the first plate so that a secondary battery is positioned between the first plate, a fastening portion that penetrates the first plate and the second plate and fastens the first plate and the second plate, and a side plate that is positioned between the first plate and the second plate with the fastening portion passing through and that encloses a side of the secondary battery.

Description

[Technical Field]

[0001] This application claims the benefit of priority based on Korean Patent Application No. 10-2023-0005564, filed January 13, 2023, the entire contents of which are incorporated herein by reference.

[0002] The present invention relates to an experimental jig for encasing a secondary battery in order to test the performance of the secondary battery. [Background technology]

[0003] Generally, types of secondary batteries include nickel-cadmium batteries, nickel-metal hydride batteries, lithium-ion batteries, and lithium-ion polymer batteries. These secondary batteries are used not only in small products such as digital cameras, DVD players, MP3 players, mobile phones, PDAs, portable game devices, power tools, and e-bikes, but also in large products that require high output, such as electric vehicles and hybrid vehicles, as well as in power storage devices and backup power storage devices that store surplus generated power and new / renewable energy.

[0004] To manufacture such a secondary battery, first, an electrode active material slurry is applied to a positive electrode current collector and a negative electrode current collector to form a positive electrode and a negative electrode, which are then stacked on both sides of a separator to form an electrode assembly of a predetermined shape, and then the electrode assembly is placed in a battery case, an electrolyte is injected, and the battery case is sealed.

[0005] The secondary battery that has undergone the electrode assembly activation process can store electrical energy and output the stored electrical energy as designed and required. In order to use the secondary battery in the field, the secondary battery must undergo a process of testing its performance, and a tool for holding the secondary battery is used to test the secondary battery.

[0006] However, the environment in which a secondary battery is held and tested is somewhat different from the environment in which the secondary battery is actually used, which can result in a problem of reduced accuracy of the test. Therefore, there is a need for a tool that can hold a secondary battery and create an environment similar to the environment in which the secondary battery is actually used, thereby improving the accuracy of the performance test of the secondary battery. Summary of the Invention [Problem to be solved by the invention]

[0007] One problem to be solved by the present invention is to provide a testing jig for a secondary battery that creates an environment similar to the environment in which a secondary battery is actually used. [Means for solving the problem]

[0008] An experimental jig according to an embodiment of the present invention may include a first plate, a second plate spaced a predetermined distance from the first plate so that a secondary battery is positioned between the first plate, a fastening portion that penetrates the first plate and the second plate and fastens the first plate and the second plate, and a side plate that is positioned between the first plate and the second plate with the fastening portion passing through and that encloses a side of the secondary battery.

[0009] The side plates may include a fixed plate located on one side of the first plate and the second plate, and a movable plate located on the other side of the first plate and the second plate opposite to the position of the fixed plate and movable a predetermined distance along the longitudinal direction of the first plate and the second plate.

[0010] The movable plate may include a plurality of fastening holes through which the fastening portions pass, and each of the fastening holes may be formed along the longitudinal direction of the first plate and the second plate so that the movable plate can move.

[0011] The fastening holes may be formed obliquely with respect to the longitudinal direction of the first plate.

[0012] The shape of each of the fastening holes may be formed in a direction away from the fixed plate as the moving plate moves in a direction in which the moving plate is inserted into the first plate and the second plate.

[0013] The moving plate can be inserted between the first plate and the second plate along the longitudinal direction of the first plate and the second plate.

[0014] The more the moving plate is inserted into the first plate and the second plate, the more spaced apart the moving plate can be from the secondary battery.

[0015] The fixing plate may be in close contact with the secondary battery.

[0016] The more the moving plate is inserted between the first plate and the second plate, the greater the distance between the moving plate and the fixed plate can be.

[0017] The surface of the fixing plate that contacts the secondary battery may include an arch structure.

[0018] The length of the moving plate may be longer than the length of the fixed plate.

[0019] The side plates may be arranged in pairs on both sides of the secondary battery, one of the pair of side plates enclosing one side of the secondary battery and the other of the pair of side plates spaced apart from the other side of the secondary battery by a predetermined distance. [Effects of the Invention]

[0020] According to a preferred embodiment of the present invention, an environment similar to an environment in which a secondary battery is actually used can be created, thereby improving the accuracy of experiments for testing the performance of a secondary battery.

[0021] Other effects may be included that can be easily predicted by a person skilled in the art from the configuration according to the preferred embodiment of the present invention. [Brief explanation of the drawings]

[0022] The following 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, and the present invention should not be interpreted as being limited solely to the matters shown in such drawings.

[0023] [Figure 1] FIG. 1 is a perspective view of a laboratory fixture according to an embodiment of the present invention. [Figure 2] FIG. 10 is a perspective view of an embodiment of the present invention with the second plate removed. [Figure 3] 1 is a perspective view of a secondary battery mounted on a first plate according to an embodiment of the present invention; [Figure 4] FIG. 10 is a plan view of a moving plate according to an embodiment of the present invention. [Figure 5] FIG. 10 is a cross-sectional view of a moving plate before it is inserted according to an embodiment of the present invention. [Figure 6] FIG. 10 is a cross-sectional view after a moving plate has been inserted according to an embodiment of the present invention. [Figure 7] FIG. 10 is a plan view showing a secondary battery placed between side plates according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0024] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] The present invention will now be described in detail with reference to the accompanying drawings, in order to enable those skilled in the art to easily carry out the present invention. However, the present invention may be embodied in various different forms and should not be construed as being limited to the following embodiments.

[0025] In order to clearly explain the present invention, detailed descriptions of parts that are not relevant to the description or related known technologies that may obscure the gist of the present invention will be omitted, and when referring to components in each drawing in this specification, the same or similar reference symbols will be used throughout the specification to refer to the same or similar components.

[0026] Furthermore, the terms and words used in this specification and claims should not be interpreted in a limited way to their ordinary or dictionary meanings, but should be interpreted in a way that is consistent with the technical idea of ​​the present invention, in accordance with the principle that inventors can appropriately define the concepts of terms in order to best explain their inventions.

[0027] FIG. 1 is a perspective view of an experimental jig 1 according to an embodiment of the present invention.

[0028] 1, an experimental jig 1 according to an embodiment of the present invention can wrap and hold a secondary battery B. For example, the experimental jig 1 can wrap the secondary battery B along the longitudinal direction of the secondary battery B to test the performance of the secondary battery B. In this case, the experimental jig 1 can wrap the outer surface of the secondary battery B except for both ends of the secondary battery B where the lead tabs are formed.

[0029] Specifically, the experimental jig 1 can encase the secondary battery B so as to be spaced apart only from a specific surface of the secondary battery B. For example, the experimental jig 1 can hold the secondary battery B so as to be spaced apart only from the upper surface of the secondary battery B at a predetermined distance while the secondary battery B is arranged so that the secondary battery B is upright, thereby creating an environment similar to the environment in which the secondary battery B is actually used. This structure of the experimental jig 1 allows the experimental jig 1 to create an environment more similar to the actual application environment, thereby improving the accuracy of the experiment when testing the performance of the secondary battery B.

[0030] More specifically, the experimental fixture 1 can include a first plate 10 , a second plate 11 , a fastening portion 12 and a side plate 13 .

[0031] The first plate 10 may be positioned below the secondary battery B to support the secondary battery B. For example, with the first plate 10 placed, the secondary battery B may be placed on the upper surface of the first plate 10.

[0032] The second plate 11 may be disposed at a predetermined distance from the first plate 10 so that the secondary battery B is located between the first plate 10 and the second plate 11. For example, with the secondary battery B placed on the top surface of the first plate 10, the second plate 11 may cover the upper side of the secondary battery B. With this structure, the secondary battery B is positioned in a sandwiched state between the first plate 10 and the second plate 11, and movement of the secondary battery B may be restricted.

[0033] The fastening portions 12 can penetrate the first plate 10 and the second plate 11 to fasten the first plate 10 and the second plate 11 together. For example, the fastening portions 12 can include bolts and nuts, etc., and can fasten the first plate 10 and the second plate 11 together by screwing them through the first plate 10 and the second plate 11. Specifically, a plurality of fastening portions 12 can be arranged on both sides of the first plate 10 and the second plate 11 along the longitudinal direction of the first plate 10 and the second plate 11.

[0034] Fig. 2 is a perspective view of the state where the second plate 11 is removed according to an embodiment of the present invention, and Fig. 3 is a perspective view of the state where a secondary battery B is mounted on the first plate 10 according to an embodiment of the present invention. That is, when the secondary battery B is mounted on the first plate 10 in the state of Fig. 2, the state shown in Fig. 3 can be obtained.

[0035] 2 and 3, the side plates 13 are positioned between the first plate 10 and the second plate 11 with the fastening portions 12 passing through them, and can enclose the sides of the secondary battery B. For example, a pair of side plates 13 can be arranged on both sides of the secondary battery B.

[0036] One of the pair of side plates 13 can surround one side of the secondary battery B, and the other of the pair of side plates 13 can be spaced a predetermined distance from the other side of the secondary battery B. Specifically, with the pair of side plates 13 surrounding both sides of the secondary battery B, one of the pair of side plates 13 is inserted between the first plate 10 and the second plate 11, so that the inserted side plate 13 can be spaced a predetermined distance from the secondary battery B.

[0037] The side plate 13 may include a fixed plate 130 and a moving plate 131 .

[0038] The fixing plate 130 may be located on one side of the first plate 10 and the second plate 11. For example, the fixing plate 130 may be disposed along one side of the first plate 10 and the second plate 11 based on the longitudinal direction of the first plate 10 and the second plate 11. Specifically, when viewed from above, the fixing plate 130 may be disposed along one side of the first plate 10 and the second plate 11 without deviating from the area where the first plate 10 and the second plate 11 are disposed.

[0039] The fastening portion 12 is formed to penetrate the first plate 10, the fixing plate 130, and the second plate 11 in this order, so that the fixing plate 130 can be fixed between the first plate 10 and the second plate 11. In this case, the fixing plate 130 can contact the secondary battery B and support the secondary battery B. That is, the fixing plate 130 can be in close contact with the secondary battery B.

[0040] The movable plate 131 may be located on the other side of the first plate 10 and the second plate 11, which is opposite to the position of the fixed plate 130. For example, based on the longitudinal direction of the first plate 10 and the second plate 11, the movable plate 131 may be located along the other side of the first plate 10 and the second plate 11, which is located opposite to the fixed plate 130.

[0041] FIG. 4 is a plan view of a moving plate 131 according to an embodiment of the present invention, FIG. 5 is a cross-sectional view of a moving plate 131 according to an embodiment of the present invention before it is inserted, and FIG. 6 is a cross-sectional view of a moving plate 131 according to an embodiment of the present invention after it has been inserted.

[0042] 4 to 6, the movable plate 131 can move a predetermined distance along the longitudinal direction of the first plate 10 and the second plate 11. For example, the movable plate 131 can be inserted between the first plate 10 and the second plate 11 along the longitudinal direction of the first plate 10 and the second plate 11 with a portion of the movable plate 131 protruding from the first plate 10 and the second plate 11.

[0043] Specifically, the moving plate 131 may include a plurality of fastening holes 1310 through which the fastening parts 12 pass. The plurality of fastening holes 1310 are through-formed portions, and a plurality of the fastening holes 1310 may be arranged along the longitudinal direction of the moving plate 131.

[0044] In this case, the fastening holes 1310 may be formed along the longitudinal direction of the first plate 10 and the second plate 11 so that the movable plate 131 can move. That is, with the fastening portions 12 penetrating the movable plate 131 through the fastening holes 1310, the movable plate 131 can move along the direction in which the fastening holes 1310 are formed.

[0045] The fastening holes 1310 may be formed in a diagonal direction relative to the longitudinal direction of the first plate 10. In other words, the shape of each fastening hole 1310 may be formed in a direction away from the fixed plate 130 as the moving plate 131 moves in the direction in which it is inserted into the first plate 10 and the second plate 11.

[0046] According to this structure, the more the moving plate 131 is inserted between the first plate 10 and the second plate 11, the more the moving plate 131 can be spaced apart from the secondary battery B. That is, with the fixing plate 130 and the moving plate 131 in contact with both sides of the secondary battery B, the more the moving plate 131 is inserted between the first plate 10 and the second plate 11, the more the distance between the moving plate 131 and the secondary battery B can be increased. That is, the more the moving plate 131 is inserted between the first plate 10 and the second plate 11, the more the distance between the moving plate 131 and the fixing plate 130 can be increased. In this case, the fixing plate 130 and one side of the secondary battery B can be maintained in close contact with each other.

[0047] Specifically, when the moving plate 131 is inserted from the front to the rear, the distance between the front end of the fixed plate 130 and the moving plate 131 before the moving plate 131 is inserted can be L1, and the distance between the front end of the fixed plate 130 and the moving plate 131 after the moving plate 131 is inserted can be L2. The difference between the distance L1 before insertion and the distance L2 after insertion can be 1.5 mm to 3.5 mm. If the difference between the distance L1 before insertion and the distance L2 after insertion is less than 1.5 mm, the space between the secondary battery B and the moving plate 131 becomes narrow, and the experimental environment created by the fixing jig may differ from the actual application environment. Furthermore, if the difference between the distance L1 before insertion and the distance L2 after insertion is more than 3.5 mm, the secondary battery B and the moving plate 131 will be too far apart, and similarly, the experimental environment created by the fixing jig may differ from the actual application environment.

[0048] As a result, secondary battery B can undergo a performance test with one side of secondary battery B in close contact with fixed plate 130 and the other side of secondary battery B spaced a predetermined distance from movable plate 131. In other words, when secondary battery B is applied to an actual module, the bottom surface of secondary battery B is supported, the expansion of the bottom surface of secondary battery B is restricted, and a predetermined space is secured on the top surface of secondary battery B. Therefore, the fixing jig can realize such an actual application environment, thereby improving the accuracy of the test when testing the performance of secondary battery B.

[0049] The following describes a fixing plate 130 according to another embodiment of the present invention. Items that are the same as those related to the fixing jig described above will be omitted below.

[0050] FIG. 7 is a plan view showing a state in which a secondary battery B is placed between side plates 13 according to another embodiment of the present invention.

[0051] 7, one surface 1300 of the fixing plate 130 that contacts the secondary battery B may have an arch structure. That is, the one surface 1300 of the fixing plate 130 that contacts the secondary battery B may be formed in a convex shape toward the secondary battery B. The secondary battery B may have a concave surface toward the fixing plate 130 to correspond to the shape of the one surface 1300 of the fixing plate 130. In other words, the secondary battery B may be in a shape that hangs down toward the fixing plate 130, allowing it to be in closer contact with the fixing plate 130.

[0052] According to this structure, the surface of secondary battery B that contacts surface 1300 of fixing plate 130 may be the lower surface of secondary battery B when actually applied to a module. As a result, secondary battery B is in closer contact with fixing plate 130 within the fixing jig and has a slightly drooping shape, so that the fixing jig provides an environment that is more similar to an actual application environment, thereby improving the accuracy of performance experiments of secondary battery B.

[0053] Also, the length of the moving plate 131 can be longer than the length of the fixed plate 130. Such a structure can assist the user to more easily press and insert the moving plate 131. Furthermore, such a structure can function to allow the user to place the secondary battery B in a fixed position without confusing the two sides of the secondary battery B facing the fixed plate 130 and the moving plate 131 when handling the fixed plate 130 and the moving plate 131.

[0054] The above description is merely an illustrative example of the technical concept of the present invention, and various modifications and variations are possible by a person having ordinary knowledge in the technical field to which the present invention pertains, without departing from the essential characteristics of the present invention.

[0055] Therefore, the embodiments disclosed in the present invention are intended to illustrate, not limit, the technical idea of ​​the present invention, and the scope of the technical idea of ​​the present invention is not limited by such embodiments.

[0056] The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be interpreted as being included in the scope of the present invention. [Explanation of symbols]

[0057] 1 Experimental jig 10 First Plate 11 Second Plate 12 Fastening part 13 Side plate 130 Fixing Plate 131 Moving Plate 1300 One side of the fixed plate 1310 Fastening hole

Claims

1. A first plate; a second plate spaced apart from the first plate by a predetermined distance so that a secondary battery is positioned between the first plate and the second plate; a fastening portion that penetrates the first plate and the second plate and fastens the first plate and the second plate; a side plate positioned between the first plate and the second plate with the fastening portion passing through, and enclosing a side surface of the secondary battery.

2. The side plate is a fixing plate located on one side of the first plate and the second plate; 2. The experimental fixture of claim 1, further comprising: a movable plate located on the other side of the first plate and the second plate opposite the position of the fixed plate, the movable plate being movable a predetermined distance along the longitudinal direction of the first plate and the second plate.

3. the moving plate includes a plurality of fastening holes through which the fastening portions pass; The experimental fixture according to claim 2 , wherein the fastening holes are formed along the longitudinal direction of the first plate and the second plate so that the moving plate is movable.

4. The experimental jig according to claim 3 , wherein the fastening holes are formed obliquely with respect to the longitudinal direction of the first plate.

5. The experimental fixture of claim 4 , wherein the fastening holes are shaped to move away from the fixed plate as the moving plate moves in a direction of insertion into the first plate and the second plate.

6. 3. The experimental fixture according to claim 2, wherein the moving plate is inserted between the first plate and the second plate along the longitudinal direction of the first plate and the second plate.

7. The experimental fixture of claim 6 , wherein the more the moving plate is inserted into the first plate and the second plate, the more spaced the moving plate is from the secondary battery.

8. The experimental fixture according to claim 7 , wherein the fixing plate is in close contact with the secondary battery.

9. The experimental fixture of claim 6 , wherein the further the moving plate is inserted between the first plate and the second plate, the greater the distance between the moving plate and the fixed plate.

10. The experimental fixture according to claim 2 , wherein one surface of the fixing plate that comes into contact with the secondary battery includes an arch structure.

11. The laboratory fixture of claim 10 , wherein the length of the moving plate is greater than the length of the fixed plate.

12. the side plates are arranged in pairs on both sides of the secondary battery, 2. The experimental fixture according to claim 1, wherein one of the pair of side plates encloses one side of the secondary battery, and the other of the pair of side plates is spaced apart from the other side of the secondary battery by a predetermined distance.

Images