KR20220122087A - Battery cell jig and method for simulating battery cell in module using the same - Google Patents

Abstract

The present invention relates to a battery cell jig and a method for simulating a battery cell inside a module using the same, wherein an actual battery module environment can be simulated in a battery cell unit by including a base on which the battery cell is disposed and a cover including a top plate and first and second side plates.

Description

BATTERY CELL JIG AND METHOD FOR SIMULATING BATTERY CELL IN MODULE USING THE SAME

The present invention relates to a battery cell jig and a method for simulating a battery cell inside a module using the same.

Recently, the price of energy sources due to the depletion of fossil fuels and interest in environmental pollution are increasing, and the demand for eco-friendly alternative energy sources is becoming an indispensable factor for living in the future. Accordingly, research on various power production technologies, such as nuclear power, solar power, wind power, and tidal power, continues, and power storage devices for using the generated energy more efficiently are also of great interest.

In particular, as technology development and demand for mobile devices increase, the demand for batteries as an energy source is rapidly increasing, and thus, research on batteries capable of meeting various needs is being conducted.

Representatively, in terms of battery shape, there is a high demand for prismatic secondary batteries and pouch-type secondary batteries that can be applied to products such as mobile phones with thin thickness, and in terms of materials, advantages such as high energy density, discharge voltage, and output stability are high. Demand for lithium secondary batteries such as lithium-ion batteries and lithium-ion polymer batteries is high.

Such a secondary battery is manufactured by accommodating the electrode assembly in a battery case, preparing an electrolyte, and then activating the battery. In this case, the battery activation step includes a process of charging and discharging the secondary battery under conditions necessary for activation after the secondary battery is mounted on the battery cell jig. Such a battery cell jig is mainly used to charge or discharge a secondary battery in the battery activation step, and is also used for performance evaluation of the secondary battery.

1 is a schematic diagram of a battery cell jig for evaluating the performance of a conventional secondary battery. Referring to FIG. 1 , the conventional secondary battery cell jig 10 includes a first plate 12 and a second plate 13 respectively positioned at upper and lower portions with respect to the battery cell 11 , and the The first and second plates 12 and 13 press and fix the battery cell 11 .

The battery cell jig 10 performs bolt fastening using a separate bolt 14 and a nut 15 penetrating the first and second plates 12 and 13 in order to fix the battery cell 11 . However, in the conventional battery cell jig 10, since the first and second plates 12 and 13 use an aluminum plate having a predetermined thickness, when evaluating a secondary battery using the battery cell jig 10, the actual The characteristics of the battery cells in the battery module could not be realized.

Therefore, there is a need to develop a battery cell jig capable of implementing the characteristics of a battery module in a battery cell unit.

Republic of Korea Patent Publication No. 2016-0008879

The present invention is to solve the above problems, and an object of the present invention is to provide a battery cell jig capable of realizing the characteristics of a battery cell in a battery module and a method for simulating a battery cell inside a module using the same.

The present invention relates to a battery cell jig capable of implementing the characteristics of a battery cell in a battery module. In one example, the battery cell jig according to the present invention includes a base on which the battery cell is mounted; a cover including a top plate having a structure that covers an upper surface of the base, and first and second side plates connected to both ends of the top plate and having a structure covering both sides of the base; and in a state in which the battery cell is seated on the base, each of the first and second side plates are disposed to engage both ends of the base, and the base and the cover are fixed so that the first and second side plates are fixed to the base. It comprises a fixing member.

In this case, the ratio of the cross-sectional thickness T1 of the base to the cross-sectional thickness T2 of the cover (T1:T2) may be in the range of 1 to 30:1.

In another example, the cover may have a structure in which the thickness of the top plate is thicker than that of the first and second side plates.

In another example, the cover may have a structure that further includes a rigid plate having a structure in close contact with the front surface of the top plate.

In addition, the battery cell jig according to the present invention may include a compression pad between the battery cell seated on the base and the top plate of the cover.

In one example, the base may include at least one sidewall extending in a direction in which the battery cell is mounted. In this case, the sidewall may further include a cooling member on an inner surface in which the battery cell is accommodated.

Furthermore, the battery cell jig according to the present invention may further include a charging/discharging unit electrically connected to the first and second electrode leads of the battery cell seated on the base.

In one example, the base may have a structure in which a plurality of fixing grooves are formed at both ends, and the first and second side plates may have a structure in which a through hole communicating with the fixing groove of the base is formed. In this case, the fixing groove and the fixing hole may be coupled to the base and the cover by inserting a fixing member. Meanwhile, the fixing member may be a bolt or a fixing pin.

In another example, the battery cell jig according to the present invention further includes a lead block in which the first and second electrode leads of the battery cell are seated in a region where the first and second side plates are not located. In this case, the lead block has a structure in which slits for designating the levels of the first and second electrode leads of the battery cells seated on the base are formed.

In a specific example, the slit of the lead block may have a structure having an inclination in the range of 0 to 80 °, and the lead block may be made of an insulating material.

Furthermore, the base and cover of the battery cell jig may include one or more materials selected from the group consisting of steel, aluminum, and aluminum alloy materials.

The present invention provides a method for simulating a battery cell inside a module using the battery cell jig described above. In one example, the method for simulating a battery cell inside a module according to the present invention may include charging and discharging a battery cell accommodated in a battery cell jig.

In another example, the method for simulating a battery cell inside a module according to the present invention may include storing the stored battery cell in a temperature range of 20 to 100 °C.

According to the battery cell jig of the present invention and the method for simulating a battery cell inside a module using the same, there is an effect that the characteristics of the battery module can be easily implemented in a battery cell unit.

1 is a schematic diagram of a battery cell jig for evaluating the performance of a conventional secondary battery.
2 is an exploded perspective view of a battery cell jig according to an embodiment of the present invention.
3 is a perspective view of a battery cell jig according to an embodiment of the present invention.
4 is a cross-sectional view of a battery cell jig according to an embodiment of the present invention.
5 is a cross-sectional view of a battery cell jig according to another embodiment of the present invention.
6 is a view showing a cross-section of a cover in a battery cell jig according to another embodiment of the present invention.
7 is a view showing a cross-section of a cover in a battery cell jig according to another embodiment of the present invention.
8 is a view showing a cross-section of a battery cell jig according to another embodiment of the present invention.
9 is a view showing a cross-section of a battery cell jig according to another embodiment of the present invention.
10 is a schematic diagram showing a form in which a lead block is fastened to a battery cell jig according to another embodiment of the present invention.
11 is a schematic view showing a form in which a battery cell is accommodated in the battery cell jig of FIG. 10 .
12 is a schematic view showing a form in which a lead block is fastened to a battery cell jig according to another embodiment of the present invention.
13 is a schematic view showing a form in which a battery cell is accommodated in the battery cell jig of FIG. 12 .

Hereinafter, the present invention will be described in detail. Prior to this, the terms or words used in the present specification and claims should not be construed as being limited to their ordinary or dictionary meanings, and the inventor should properly understand the concept of the term in order to best describe his invention. It should be interpreted as meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined in

The present invention relates to a battery cell jig and a method for simulating a battery cell inside a module using the same.

In general, a battery cell jig for evaluating the performance of a secondary battery is configured to include first and second plates for pressing from both sides with the battery cells interposed therebetween. The battery cell jig performs bolt fastening using separate bolts and nuts passing through the first and second plates in order to fix the battery cells. However, since the first and second plates of the battery cell jig use an aluminum plate having a predetermined thickness, when evaluating a secondary battery using the battery cell jig, the characteristics of the battery cell in the actual battery module cannot be realized. did. That is, the environment of the battery module could not be realized using the battery cell unit.

Accordingly, the present invention provides a battery cell jig capable of realizing the characteristics of a battery cell in a battery module and a method for simulating a battery cell inside a module using the same. Specifically, the battery cell jig of the present invention includes a base and a top plate on which the battery cells are placed, and a cover in the form of “∩” including first and second side plates, so that the environment of the actual battery module in the battery cell unit. can imitate Furthermore, the battery cell jig according to the present invention has the advantage that a simulation test can be performed for each position of the battery cell accommodated in the battery module according to the thickness of the top plate of the cover.

Meanwhile, in the present invention, the "battery cell" accommodated in the battery cell jig is a secondary battery, and may be a pouch-type or square-type unit cell, and an electrode assembly having a positive electrode/separator/negative electrode structure on a laminate sheet exterior material is formed outside the exterior material. It may be a pouch-type battery cell having a built-in structure connected to the electrode leads. In addition, the electrode leads may be drawn out of the sheet and extend in the same or opposite directions.

Hereinafter, a battery cell jig according to the present invention and a method for simulating a battery cell inside a module using the same will be described in detail with reference to the drawings.

<First embodiment>

2 is an exploded perspective view of a battery cell jig according to an embodiment of the present invention, FIG. 3 is a perspective view of a battery cell jig according to an embodiment of the present invention, and FIG. 4 is an embodiment of the present invention It is a cross-sectional view of the battery cell jig along.

2 to 4 , the battery cell jig 100 according to the present invention is for pressing and fixing the battery cell 110 for evaluation of the secondary battery, and the base 120 on which the battery cell 110 is mounted. ), a cover 130 having a structure covering the upper surface and both sides of the base 120 and a fixing member 140 for fixing the base 120 and the cover 130 .

In particular, the battery cell jig 100 according to the present invention can easily implement the characteristics of a battery module in a unit of a battery cell by the structure of the base 120 and the cover 130 . Specifically, the battery cell jig 100 according to the present invention has an effect of easily simulating the environment of an actual battery module in a unit cell.

Here, the battery cell 110 is a secondary battery, and may be a pouch-type or prismatic secondary battery. Hereinafter, in the present embodiment, the battery cell 110 is limited to a pouch-type secondary battery.

The base 120 provides a space in which the battery cells 110 are seated on one surface, and has a plate shape so that the battery cells 110 to be evaluated are in close contact with each other. In a specific example, the base 120 may have a rectangular plate shape and a predetermined thickness.

On the other hand, both ends of the base 120 are coupled to the first and second side plates 132 and 133 of the cover 130 to be described later. To this end, a plurality of fixing grooves ( 121) has a formed structure. A detailed description will be given later. Here, both ends of the base 120 mean an area where the electrode leads are not disposed when the battery cells 110 are disposed on the base 120 . That is, both ends of the base 120 may refer to regions in a direction perpendicular to the electrode leads of the battery cells 110 .

The cover 130 is disposed on the upper surface of the base 120 . Specifically, the cover 130 is to provide an environment of the battery module to the battery cell 110 to be evaluated by pressing the battery cell 110 seated on one surface of the base 120 , and the base 120 . ) including a top plate 131 covering one surface, and first and second side plates 132 and 133 having a structure that is connected to both ends of the top plate 131 and covers both sides of the base 120 , is composed The top plate 131 has a structure that covers the base 120 , and the battery cells 110 seated on the base 120 may be surface-contacted, and the first and second side plates 132 and 133 are the base 120 . ) as a structure covering both ends of the base 120, a structure covering a partial area or the entire area of the base 120, and is not limited to any one.

In a specific example, the first and second side plates 132 and 133 are connected to both ends of the top plate 131 and may have a vertically oriented structure. For example, the cover 130 may include It may be a "∩" structure. On the other hand, the structure of the above-described cover 130 is to simulate the frame shape of the battery module.

Furthermore, the first and second side plates 132 and 133 may have fixing holes 134 communicating with the fixing grooves 121 formed in the base 120 . The fixing holes 134 of the first and second side plates 132 and 133 may be engaged with the fixing grooves 121 of the base 120 . On the other hand, the shape of the fixing groove 121 or the fixing hole 134 is not limited to any one, but preferably has a width through which the fixing member 140 to be described later can pass through, It may have a predetermined length according to the pressing direction.

The base 120 and the cover 130 may be made of one or more materials selected from the group consisting of steel, aluminum, and an aluminum alloy material. For example, the base 120 and the cover 130 are made of an aluminum material. can be accomplished

The fixing member 140 is for fixing the base 120 and the cover 130, and may be a fixing pin or a bolt, for example, the fixing member 140 may be a bolt. In a specific example, in the battery cell jig 100 according to the present invention, in a state in which the battery cell 110 is seated on the base 120 , each of the first and second side plates 132 and 133 is the base 120 . ) is disposed to engage both ends of the base 120 and the cover 130 can be fixed.

In addition, in the battery cell jig 100 according to the present invention, the first and second side plates of the cover 130 are provided so that the plurality of fixing members 140 can easily fasten the base 120 and the cover 130 to each other. It may further include a side bar 141 in close contact with the outer surface of the (132, 133). In a specific example, the side bar 141 is in the form of a bar in close contact with the outer surfaces of the first and second side plates 132 and 133 of the cover 130 , and the fixing groove 121 and the fixing hole 134 described above. ) and may have a structure in which a through-hole 142 communicating with it is formed. At this time, the side bar 141 serves to evenly apply pressure to the portion to which the fixing member 140 is fastened from the side surfaces of the first and second side plates 132 and 133 . That is, a plurality of fixing members 140 may be inserted into the through-holes 142 of the side bar 141 to easily fix the base 120 and the cover 130 .

Furthermore, the battery cell jig 100 according to the present invention may further include a charging/discharging unit (not shown). Specifically, the charging/discharging unit is electrically connected to the first and second electrode leads of the battery cell 110 seated on the base 120 , and supplies charging power to the battery cell 110 or the battery cell 110 . ) can be supplied with discharge power. Here, the supply of charging power to the battery cells 110 is not necessarily limited to the meaning of supplying sufficient power to the extent of buffering the battery cells 110 . Since the meaning of receiving discharge power from the battery cell 110 may be used in the same way, a repeated description will be omitted.

In a specific example, the battery cell 110 accommodated in the battery cell jig 100 according to the present invention can simulate the actual battery cell in the battery module by charging and discharging the battery cell 110 by the charging/discharging unit. have. In addition, while charging and discharging the battery cell, a process of measuring at least one of a temperature, a pressure, and a voltage of the corresponding battery cell may be performed. However, the present invention does not exclude the case of alternately repeating the steps of charging and discharging the battery cells and measuring one or more of the temperature, pressure, and voltage of the battery cells.

The battery cell jig 100 according to the present invention can simulate the environment of an actual battery module in a battery cell unit by the above-described configuration.

<Second embodiment>

5 is a cross-sectional view of a battery cell jig according to another embodiment of the present invention. Referring to FIG. 5 , in the battery cell jig 200 according to the present invention, the cross-sectional thickness T1 of the base 220 has the same structure as the cross-sectional thickness T2 of the cover 230, or the base 220 has a structure in which the cross-sectional thickness T1 of the cover 230 is thicker than the cross-sectional thickness T2 of the cover 230 . More specifically, in the battery cell jig 200 according to the present invention, the base 220 and the cover 230 may simulate the space in which the battery cells are actually arranged in the battery module.

In a specific example, in the battery cell jig 200 according to the present invention, the ratio (T1:T2) of the cross-sectional thickness T1 of the base 220 to the cross-sectional thickness T2 of the cover may be in the range of 1 to 30:1. More specifically, the cross-sectional thickness (T1) of the base 220 and the cross-sectional thickness (T2) ratio of the cover (T1:T2) is in the range of 1 to 30:1, in the range of 5 to 20:1, and in the range of 10 to 15:1. may be, or may be 10:1.

Depending on the ratio (T1:T2) of the cross-sectional thickness T1 of the base 220 and the cross-sectional thickness T2 of the cover 230 , the position at which the battery cells 210 are disposed, or the number of battery cells stored in the module etc. can be imitated. However, the ratio may vary depending on the frame thickness of the battery module to be simulated.

<Third embodiment>

6 is a view showing a cross-section of a cover in a battery cell jig according to another embodiment of the present invention. Referring to FIG. 6 , the cover 330 includes a top plate 331 and first and second side plates 332 and 333 . In this case, the cross-sectional thickness Tp ₁ of the top plate 331 and the cross-sectional thickness Tp ₂ of the first and second side plates 332 and 333 have the same structure, or of the top plate 331 . The cross-sectional thickness Tp ₁ has a structure thicker than the cross-sectional thickness Tp ₂ of the first and second side plates 332 and 333 .

This is to simulate the rigidity of the module case to be simulated. In a specific example, the ratio of the thickness Tp ₁ of the top plate 331 of the cover 330 to the thickness Tp ₂ of the first and second side plates 332 and 333 is (Tp ₁ : Tp ₂ ) is 1 It can be in the range of ~30:1. In a specific example, the cover 330 has a structure in which the thickness of the top plate 331 is thicker than that of the first and second side plates 332 and 333 . More specifically, the ratio of the thickness Tp ₁ of the top plate 331 to the thickness Tp ₂ of the first and second side plates 332 and 333 (Tp ₁ : Tp ₂ ) is 1 to 30:1. range, 3-20:1 range, 5-10:1 range, or 5:1 range.

However, the ratio (Tp ₁ :Tp ₂ ) of the thickness Tp ₁ of the top plate 331 to the thickness Tp ₂ of the first and second side plates 332 and 333 is not limited thereto. The thickness of each of the top plate 331 and the first and second side plates 332 and 333 can be implemented according to a module to be simulated, and can be predicted through an analytical Swelling Force-Displacement Graph.

The battery cells accommodated in the battery module are positioned according to the ratio (Tp ₁ : Tp ₂ ) of the thickness (Tp ₁ ) of the top plate 331 and the thickness (Tp ₂ ) of the first and second side plates 332 and 333 Star simulation tests may be possible. For example, as the thickness Tp ₁ of the top plate 331 is thinner than the thickness Tp ₂ of the first and second side plates 332 and 333, the battery cells disposed in the outermost region within the module are simulated. And as the thickness increases, it is possible to simulate the battery cells disposed on the central side in the module.

<Fourth embodiment>

7 is a view showing a cross-section of a cover in a battery cell jig according to another embodiment of the present invention. Referring to FIG. 7 , the cover 430 further includes a rigid plate 434 having a structure in close contact with the front surface of the top plate 431 . Meanwhile, the rigid plate 434 may be made of a metal material. For example, the rigid plate 343 may be made of steel, aluminum, or an aluminum alloy material.

The rigid plate 434 may be included on the inner surface of the cover 430 and may be in contact with the upper surface of the battery cell 410 accommodated in the battery cell jig. This is to simulate the rigidity of the module to be simulated. The thickness or mechanical strength of the rigid plate 434 can be implemented according to a module to be simulated, and can be predicted through an analytical Swelling Force-Displacement Graph. On the other hand, depending on the thickness or mechanical strength of the rigid plate 434, a simulation test for each location in the battery module may be possible. For example, as the mechanical strength of the rigid plate 434 is lower, the battery cells disposed in the outer region within the module may be simulated, and as the strength is higher, the battery cells disposed at the center side in the battery module may be simulated. can

8 is a view showing a cross-section of a battery cell jig according to another embodiment of the present invention. Referring to FIG. 8 , the battery cell jig 400 according to the present invention includes a compression pad 450 . Specifically, the compression pad 450 may be interposed between the battery cell 410 seated on the base 420 and the top plate 431 of the cover 430 . The compression pad 450 may be a polyurethane-based material. On the other hand, the compression pad 450 absorbs a change in the battery cell when the thickness of the battery cell 410 is deformed due to swelling of the battery cell 410 in the charging/discharging process stored in the battery cell jig 400 . can do.

<Fifth embodiment>

9 is a view showing a cross-section of a battery cell jig according to another embodiment of the present invention. Referring to FIG. 9 , the battery cell jig 500 according to the present invention further includes a cooling member 550 . In a specific example, in the battery cell jig 500 , the base 520 includes at least one sidewall 522 extending in a direction in which the battery cell 510 is seated. In this case, the sidewall 522 may further include a cooling member 560 on an inner surface in which the battery cell 510 is accommodated. The cooling member 560 may be disposed in a region in which the electrode lead of the battery cell 510 is not formed, which prevents the temperature of the battery cell 510 from rising during the charging/discharging process of the battery cell 510 . it is for

In a specific example, the cooling member 560 may be in the form of a pad, paste, or resin. For example, the cooling member may be in the form of a pad having a structure in which a fluid is accommodated therein. In this case, a liquid or gel-like fluid may be accommodated in the pad. The fluid may be cooling water or water, and by filling the pad with cooling water or water, a cooling effect on the battery cells may be realized.

Furthermore, in the battery cell jig 500 according to the present invention, the battery cell 510 in which the cooling member 560 is not disposed may have a structure in which an empty space is formed as a sealing area of the battery cell. Here, the empty space means a space formed between the sealing area of the battery cell 510 accommodated in the battery cell jig 500 and the inner surface of the first or second side plate 532 or 533 . This is to implement a space dimension constraining the battery cells in the battery module.

<Sixth embodiment>

10 is a schematic view showing a form in which a lead block is fastened to a battery cell jig according to another embodiment of the present invention, and FIG. 11 is a schematic view showing a form in which a battery cell is accommodated in the battery cell jig of FIG. is a schematic view showing a form in which a lead block is fastened to a battery cell jig according to another embodiment of the present invention, and FIG. 13 is a schematic view showing a form in which a battery cell is accommodated in the battery cell jig of FIG. 12 .

10 to 13 , the battery cell jig 600 according to the present invention includes a lead block 670 . In a specific example, in the battery cell jig 600 according to the present invention, the first and second electrode leads of the battery cell 610 are seated in an area where the first and second side plates of the cover 630 are not located. It further includes a lead block 670 . In the drawing, one lead block 670 is shown, but in the case of the battery cell 610 having a structure in which the first and second electrode leads extend in opposite directions, two lead blocks may be included.

The lead block 670 designates the levels of the first and second electrode leads of the battery cell 610 , and may have a structure in which a slit 671 through which the first and second electrode leads pass is formed.

In a specific example, the lead block 670 is made of an insulating material, and the slit 671 of the lead block 670 may have a structure having an inclination Θ in the range of 0 to 80°, and the lead block 670 The slit 671 may have a structure having an angle range of 0 to 70°, an angle range of 0 to 60°, and an angle range of 0 to 45°. The slit 671 having a predetermined angle may be applied according to the shape of the first and second electrode leads of the battery cell 610 to be evaluated, and various bending angles of the battery cell may be simulated. For example, the slit 671 of the lead block 670 may have a structure having an angle of about 45°. Meanwhile, as shown in the drawing, when the electrode lead of the battery cell 610 accommodated in the battery cell jig 600 is bent upward, the slit 671 of the lead block 670 is directed upward. It can be turned over and coupled between the base 620 and the cover 630 .

In particular, the lead block 670 may be coupled between the base 620 and the cover 630 , and the lead block 670 may be replaced according to the shape of the electrode lead of the battery cell 610 . For example, the base 620 and the cover 630 may have a structure in which a coupling protrusion is formed in a region in which the lead block 670 contacts, and the lead block 670 corresponds to the coupling protrusion in a region in contact with the coupling protrusion. It may be a structure in which a coupling groove is formed. With this structure, the lead block 670 can be easily detached from the battery cell jig 600 . However, the coupling or separation of the lead block 670 may be performed after releasing the coupling of the cover 630 .

<Seventh embodiment>

The present invention provides a method for simulating a battery cell inside a module using the battery cell jig described above. In one example, the method for simulating a battery cell inside a module according to the present invention includes charging and discharging a battery cell accommodated in a battery cell jig.

In a specific example, in the method for simulating a battery cell inside a module according to the present invention, the charging/discharging unit may be electrically connected to the first and second electrode leads to perform charging and discharging of the battery cell, and while performing the above step, the battery It may include measuring one or more of temperature, pressure and voltage of the cell.

In the present invention, the step of charging and discharging the battery cell and the process of measuring one or more of the temperature, pressure, and voltage of the battery cell are performed simultaneously. Specifically, during the charging and discharging of the battery cell, a process of measuring one or more of the temperature, pressure, and voltage of the battery cell is performed. However, the present invention does not exclude the case of alternately repeating the steps of charging and discharging the battery cells and measuring one or more of the temperature, pressure, and voltage of the battery cells. For the description of the charging/discharging unit, all of the above-described contents will be cited, and redundant descriptions will be omitted.

Furthermore, the method for simulating a battery cell according to the present invention includes the step of storing the battery cell accommodated in the battery cell jig in a temperature range of 20 to 100 ℃. The temperature range may be 20 to 100 °C, or 25 to 80 °C. For example, the battery cells accommodated in the battery cell jig may be stored at a temperature of about 25 °C, about 45 °C, about 60 °C, about 70 °C or about 80 °C, and the battery cells are stored for an average of 1 to 6 months. can For example, the battery cells can be stored for 6 months. In addition, a process of measuring at least one of a temperature, a pressure, and a voltage of the stored battery cells may be performed during the process of storing the battery cells.

The storing of the battery cells accommodated in the battery cell jig may measure at least one of a temperature, pressure, and voltage that changes in the battery cell in a corresponding temperature range. For example, the battery cell may be stored at a high temperature. This is to provide a situation similar to a situation in which the battery cells stored in the battery module are maintained at a high temperature to induce swelling of the battery cells.

On the other hand, the method for simulating a battery cell inside a module according to the present invention is based on the thickness or mechanical strength (rigidity) of the top plate in the cover of the battery cell jig, simulating each position of the battery cell in the module, or the number of battery cells accommodated in the module, etc. A simulation test may be possible. For example, as the thickness of the top plate increases, it may mean that the number of battery cells in the battery module to be simulated increases, and the thinner the thickness of the top plate, the smaller the number of battery cells in the battery module to be simulated. can mean

That is, the method for simulating a battery cell inside a module according to the present invention can easily simulate the environment of an actual battery module in a battery cell unit as described above, and is one of the temperature, pressure, and voltage of a battery cell to be evaluated. Changes in more than one can be measured.

Above, the present invention has been described in more detail with reference to the drawings and examples. However, the configuration described in the drawings or embodiments described in the present specification is only one embodiment of the present invention and does not represent all the technical spirit of the present invention, so at the time of the present application, various equivalents and It should be understood that there may be variations.

10: battery cell jig
11: battery cell
12: first plate
13: second plate
14: bolt
15: nut
100, 200, 400, 500, 600: battery cell jig
110, 410, 510, 610: battery cell
120, 220, 520, 620: base
121: fixed groove
130, 230, 330, 430, 530, 630: cover
131, 231, 331, 431, 531: top plate
132, 232, 332, 432, 532: first side plate
133, 233, 333, 433, 533: second side plate
134: fixing hole
140, 240: fixing member
141: sidebar
142: through hole
434: rigid plate
450: buffer pad
522: side wall
560: cooling member
670: lead block
671: slit

Claims (16)

a base on which the battery cells are mounted;
a cover including a top plate having a structure that covers an upper surface of the base, and first and second side plates connected to both ends of the top plate and having a structure covering both sides of the base; and
In a state in which the battery cell is seated on the base, each of the first and second side plates is disposed to engage both ends of the base, and the first and second side plates are fixed to the base. A battery cell jig comprising a member.
The method of claim 1,
The cross-sectional thickness of the base (T1) and the cross-sectional thickness of the cover (T2) ratio (T1: T2) is a battery cell jig in the range of 1 to 30:1.
The method of claim 1,
The top plate thickness of the cover (Tp ₁ ) and the first and second side plate thicknesses (Tp ₂ ) The ratio (Tp ₁ :Tp ₂ ) is a battery cell jig in the range of 1 to 30:1. The method of claim 1,
The cover is a battery cell jig having a structure that further includes a rigid plate having a structure in close contact with the front surface of the top plate.
The method of claim 1,
A battery cell jig having a structure including a compression pad between the battery cell seated on the base and the top plate of the cover.
The method of claim 1,
The base includes at least one sidewall extending in a direction in which the battery cell is seated,
The sidewall is a battery cell jig having a structure that further includes a cooling member on the inner surface in which the battery cell is accommodated.
The method of claim 1,
A battery cell jig further comprising a charging/discharging unit electrically connected to the first and second electrode leads of the battery cell seated on the base.
The method of claim 1,
The base has a structure in which a plurality of fixing grooves are formed at both ends,
The first and second side plates have a structure in which a through hole communicating with the fixing groove of the base is formed,
The fixing groove and the fixing hole are battery cell jig, characterized in that the fixing member is inserted into the base and the cover is coupled.
The method of claim 1,
The fixing member is a battery cell jig, characterized in that it is a bolt or a fixing pin.
The method of claim 1,
The battery cell jig further includes a lead block in which the first and second electrode leads of the battery cell are seated in an area where the first and second side plates are not located,
The lead block is a battery cell jig having a structure in which slits for designating the levels of the first and second electrode leads of the battery cells seated on the base are formed. 11. The method of claim 10,
The slit of the lead block is a battery cell jig having a structure having an inclination (Θ) in the range of 0 to 80 ° angle.
11. The method of claim 10,
The lead block is a battery cell jig, characterized in that it is an insulating material.
The method of claim 1,
Base and cover, the battery cell jig comprising one or more materials selected from the group consisting of steel, aluminum and aluminum alloy material.
A method for simulating a battery cell inside a module using the battery cell jig according to claim 1 .
15. The method of claim 14,
A method of simulating a battery cell inside a module comprising the step of charging and discharging the battery cells accommodated in the battery cell jig.
15. The method of claim 14,
A method of simulating a battery cell inside a module comprising the step of storing the battery cell accommodated in the battery cell jig at a temperature range of 20 to 100 °C.

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