Hot-pressing termination adhesive tape

Abstract

The present invention relates to a hot-pressing termination adhesive tape, comprising: a base material; a first adhesive layer stacked on one surface of the substrate; a second adhesive layer stacked on the other surface of the substrate; a first protective member provided on one surface of the first adhesive layer opposite to the substrate; and a second protective member disposed on one surface of the second adhesive layer opposite to the substrate, wherein the second protective member is disposed to protrude in an outward direction from at least one end of the second adhesive layer.

Description

Technical Field

[0001] This application claims the priority and benefit of Korean Patent Application No. 10-2022-0152836, filed with the Korean Intellectual Property Office on November 15, 2022, the entire content of which is incorporated herein by reference.

[0002] The present invention relates to a hot-pressing termination tape. Background Art

[0003] Generally, different from non-rechargeable primary batteries, a secondary battery is a battery that can be recharged and discharged. Secondary batteries are widely used in the fields of high-tech electronic devices such as mobile phones, laptop computers, and video cameras.

[0004] The stability of a secondary battery can be ensured by a stability test of measuring internal short circuits by pressing one surface of the battery with a press.

[0005] According to the shape of the battery case, secondary batteries are classified into cylindrical batteries and prismatic batteries in which an electrode assembly is embedded in a cylindrical or prismatic metal case, and pouch-type batteries in which an electrode assembly is embedded in a pouch-type case made of aluminum laminate.

[0006] In a pouch-type lithium-ion secondary battery (polymer battery), an electrode assembly is placed in a pouch-type battery case. When an impact is applied to the battery due to dropping or the like, the electrode assembly moves inside the pouch, which causes the electrode to bend, resulting in short circuits, ignition, explosion, etc. Therefore, a termination tape with special functions should be placed between the electrode assembly and the pouch to prevent the electrode assembly from moving inside the pouch, even when an impact is applied to the battery.

[0007] Generally, a termination tape for a pouch-type secondary battery includes a first adhesive layer and a second adhesive layer, where an acrylic pressure sensitive adhesive ('PSA') and a hot melt adhesive are respectively coated on two surfaces of a substrate of a polypropylene (PP) or polyethylene terephthalate (PET) film. The termination tape may have a protective tape attached to one surface of each of the first adhesive layer and the second adhesive layer to protect the first adhesive layer and the second adhesive layer.

[0008] The protective tape attached to one surface of the first adhesive layer is removed to temporarily adhere the termination tape to the electrode assembly, and then the protective tape attached to one surface of the second adhesive layer is removed to adhere the second adhesive layer and the pouch.

[0009] When the protective tape attached to one surface of the second adhesive layer is removed, due to the adhesive force between the protective tape and the second adhesive layer, the outermost layer of the electrode assembly is lifted, resulting in an increase in the appearance defect rate of the secondary battery. Summary of the Invention

[0010] Technical Problem

[0011] In view of the problems of the above related technologies, the present invention aims to provide a hot-pressing termination tape that prevents deformation of the external shape of the electrode assembly.

[0012] Technical Solution

[0013] An exemplary embodiment of the present invention provides a hot-pressing termination tape, including: a substrate; a first adhesive layer stacked on one surface of the substrate; a second adhesive layer stacked on the other surface of the substrate; a first protective member disposed on one surface of the first adhesive layer opposite to the substrate; and a second protective member disposed on one surface of the second adhesive layer opposite to the substrate, wherein the second protective member is disposed to protrude in an outward direction from at least one end of the second adhesive layer.

[0014] An exemplary embodiment of the present invention provides the hot-pressing termination tape, wherein the first protective member and the second protective member each include a porous film, and one surface of the porous film is subjected to a release treatment.

[0015] An exemplary embodiment of the present invention provides the hot-pressing termination tape, wherein an auxiliary first adhesive layer is stacked on a surface of the second protective member opposite to the second adhesive layer.

[0016] An exemplary embodiment of the present invention provides the hot-pressing termination tape, wherein the second protective member includes an adhesion part in direct contact with the second adhesive layer and a protruding part protruding outward from an end of the second adhesive layer, and the protruding part is folded one or more times in a direction toward the center of the second protective member.

[0017] An exemplary embodiment of the present invention provides the hot-pressing termination tape, wherein the second protective member is separated at a part where the adhesion part contacts an edge of the second adhesive layer.

[0018] An exemplary embodiment of the present invention provides the hot-pressing termination tape, wherein the first adhesive layer is one or more selected from the group consisting of a rubber-based temporary adhesive, an acrylic temporary adhesive, and a silicone temporary adhesive.

[0019] Exemplary embodiments of the present invention provide the hot press termination tape, wherein the melting temperature of the second adhesive layer is lower than 140 °C.

[0020] Exemplary embodiments of the present invention provide the hot press termination tape, wherein the second adhesive layer comprises any one or more of a hot melt adhesive, a heat-activated adhesive, and a pressure-sensitive adhesive.

[0021] Exemplary embodiments of the present invention provide the hot press termination tape, wherein the substrate has an insulating property.

[0022] Exemplary embodiments of the present invention provide the hot press termination tape, wherein the substrate comprises a polymer resin film, and wherein the polymer resin comprises any one or more of polyethylene (PE), polyphenylene ether (PPE), polyimide (PI), polypropylene (PP), and polyethylene terephthalate (PET).

[0023] Advantageous Effects

[0024] In the hot press termination tape according to an exemplary embodiment of the present invention, the length or width of the protective member located on one surface of the second adhesive layer is greater than the length or width of the second adhesive layer, the substrate, and the first adhesive layer, such that the protective member can be easily separated.

[0025] In addition, since the protective member comprises a porous structure, the adhesive force with the second adhesive layer can be reduced, making the protective member easier to separate. Description of the Drawings

[0026] Figure 1 is a cross-sectional view showing the hot press termination tape according to an exemplary embodiment of the present invention.

[0027] Figure 2 is a plan view showing an electrode assembly to which the hot press termination tape according to an exemplary embodiment of the present invention is attached.

[0028] Figure 3 is a view showing the order of attaching the hot press termination tape according to an exemplary embodiment of the present invention to an electrode assembly.

[0029] Figure 4 is a cross-sectional view showing the electrode assembly according to an exemplary embodiment of the present invention.

[0030] Figure 5 is a perspective view showing a secondary battery according to an exemplary embodiment of the present invention.

[0031] <Description of Reference Numerals and Symbols>

[0032] 1000: Secondary battery

[0033] 100: Electrode assembly

[0034] 110: Positive electrode

[0035] 110a: Internal positive electrode

[0036] 110b: External positive electrode

[0037] 111: Positive electrode tab

[0038] 120: Negative electrode

[0039] 121: Negative electrode tab

[0040] 130: Separator

[0041] 140: First electrode lead

[0042] 150: Second electrode lead

[0043] 200: Housing

[0044] 210: Lower housing

[0045] 211: Accommodating groove

[0046] 212: Sealing portion

[0047] 220: Upper housing

[0048] 300: Thermocompression termination tape

[0049] 310: Substrate

[0050] 320: First adhesive layer

[0051] 330: Second adhesive layer

[0052] 340: First protective member

[0053] 350: Second protective member

[0054] 351: Adhesive portion

[0055] 352: Protruding portion Detailed implementation manner

[0056] The detailed description of the present invention aims to fully explain the present invention to those skilled in the art. Throughout the specification, unless explicitly described to the contrary, when a component "includes (comprises)" another component or "is characterized by" having a certain structure and a certain shape, this means that other components, structures, and shapes may be included without exclusion.

[0057] The present invention can be modified in various ways and can have various exemplary embodiments, and specific exemplary embodiments will be described in detail in the detailed description. However, the description of the exemplary embodiments is not intended to limit the content of the present invention, but rather it should be understood that the present invention will cover all modifications, equivalents, and alternatives falling within the spirit and technical scope of the present invention.

[0058] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. However, it should be noted that the accompanying drawings are provided to illustrate the present invention, and the scope of the present invention is not limited by the drawings.

[0059] Figure 1 is a cross-sectional view showing a thermocompression termination tape 300 according to an exemplary embodiment of the present invention, Figure 2 is a plan view showing an electrode assembly 100 to which a thermocompression termination tape 300 according to an exemplary embodiment of the present invention is attached, Figure 4 is a cross-sectional view showing an electrode assembly 100 according to an exemplary embodiment of the present invention, Figure 5 is a perspective view showing a secondary battery 1000 according to an exemplary embodiment of the present invention.

[0060] The thermocompression termination tape 300 includes a base material 310, a first adhesive layer 320, a second adhesive layer 330, a first protection member 340, and a second protection member 350.

[0061] In the thermocompression termination tape 300, the first adhesive layer 320 and the second adhesive layer 330 can be respectively applied to two surfaces of the base material with the base material 310 interposed therebetween. The base material 310 can be provided in the form of a plate or a film. In order to prevent the electrode assembly 100 and the housing 200 from being electrified through the thermocompression termination tape 300, the base material 310 can have an insulating property.

[0062] For example, the base material 310 can include a polymer resin film, and the polymer resin can include any one or more of polyethylene (PE), polyphenylene ether (PPE), polyimide (PI), polypropylene (PP), and polyethylene terephthalate (PET). Alternatively, the base material 310 can include the same material as the separator 130 of the electrode assembly 100.

[0063] The first adhesive layer 320 is formed by applying a temporary adhesive material to one surface of the base material 310 and is capable of directly contacting the electrode assembly 100 to adhere the thermocompression termination tape 300 to the electrode assembly 100.

[0064] The first adhesive layer 320 includes a pressure-sensitive adhesive. The pressure-sensitive adhesive may be one or more selected from the group consisting of rubber-based temporary adhesives, acrylic temporary adhesives, and silicone temporary adhesives. Preferably, the first adhesive layer may include an acrylic temporary adhesive. For example, the acrylic temporary adhesive may include one or more selected from the group consisting of butyl acrylate, ethyl acrylate, methyl methacrylate, vinyl acrylate, 2-ethylhexyl acrylate, 2-hydroxyethyl acrylate, 2-hydroxyethyl methyl acrylate, glycidyl methacrylate, triethylene glycol dimethacrylate, and acrylic acid.

[0065] The second adhesive layer 330 is formed by applying an adhesive material to the other surface of the substrate 310, that is, the surface of the two surfaces of the substrate 310 to which the first adhesive layer 320 is not applied. In other words, the second adhesive layer 330 and the first adhesive layer 320 are disposed at opposite positions with the substrate 310 inserted therebetween.

[0066] The second adhesive layer 330 may be in direct contact with the inner surface of the housing 200 to adhere the thermocompression termination tape 300 to the housing 200. The second adhesive layer 330 may include a material having a thermal adhesiveness caused by the sealing temperature of the housing 200 when sealing the housing 200. The second adhesive layer 330 may include any one or more of a hot melt adhesive, a heat-activated adhesive, and a pressure-sensitive adhesive. Preferably, the second adhesive layer 330 may include a hot melt adhesive.

[0067] In order to exhibit adhesiveness by heat, the second adhesive layer 330 may be made of a thermoplastic resin. For example, the thermoplastic resin may be made of one or more selected from the group consisting of polyolefin-based resins, polyvinylchloride-based resins, Ethylene-Vinyl Acetate copolymer-based resins, polyamide-based resins, polyester-based resins, silicone rubbers, and copolymers including the above resins; and thermoplastic resins having an ionomer structure.

[0068] The melting temperature of the second adhesive layer 330 may be lower than 140 °C. The melting temperature of the second adhesive layer 330 is preferably lower than 130 °C, more preferably lower than 100 °C.

[0069] The secondary battery 1000 according to the present invention is manufactured by inserting an electrode assembly 100 into a lower case 210, covering the lower case 210 with an upper case 220, and performing heating and pressing (or thermocompression) to seal the case 200. In this case, the thermocompression temperature of the case 200 is 100°C to 130°C.

[0070] Accordingly, the second adhesive layer 330 is melted into a liquid state by the thermocompression temperature of the case 200, and after thermocompression, the second adhesive layer cools and solidifies by dissipating heat to the surroundings, thereby exhibiting adhesiveness.

[0071] The melting temperature of the second adhesive layer 330 is determined by measuring the force (adhesiveness) required to peel the termination tape sample from the pouch at 180° at a speed of 300 ± 30 mm / min using a universal testing machine (UTM) to measure the temperature at which the adhesiveness decreases or no adhesiveness is exhibited. In this case, the thermocompression termination tape 300 is cut to a width of 1 inch and a length of 1500 mm, the second adhesive layer 330 is attached to an aluminum electrode plate, and then the thermocompression termination tape attached to the aluminum electrode plate is pressed with a block heated to a temperature below 140°C. Then, the force (adhesiveness) required to peel the termination tape sample from the pouch at 180° at a speed of 300 ± 30 mm / min is measured using a universal testing machine (UTM).

[0072] The first protective member 340 is stacked on one surface of the first adhesive layer 320 and is disposed at a position opposite to the base material 310. The second protective member 350 is stacked on one surface of the second adhesive layer 330 and is disposed at a position opposite to the base material 310. Here, one surface of the first adhesive layer 320 and one surface of the second adhesive layer 330 respectively refer to the surfaces of each of the first adhesive layer 320 and the second adhesive layer 330 on which the base material 310 is not provided among the two surfaces.

[0073] The first protective member 340 and the second protective member 350 can protect the first adhesive layer 320 having temporary adhesiveness and the second adhesive layer 330 having adhesiveness. In order to fix the first adhesive layer 320 and the second adhesive layer 330 to the electrode assembly 100 and the inner surface of the case 200 respectively, the first protective member 340 and the second protective member 350 should be easily separated from the first adhesive layer 320 and the second adhesive layer 330. Accordingly, the first protective member 340 and the second protective member 350 can be subjected to a release treatment on the surfaces facing the first adhesive layer 320 and the second adhesive layer 330. The release treatment may refer to applying a physical and / or chemical surface treatment to the surface. For example, the surface of the protective film may have an uneven surface, or may be coated with a silicone-based release agent together with or independently of the uneven surface.

[0074] In order to reduce the temporary adhesion force and the adhesion force with the first adhesive layer 320 and the second adhesive layer 330, the first protective member 340 and the second protective member 350 may each include a porous structure, thereby making it easier to separate the first protective member 340 and the second protective member 350. That is to say, the first protective member 340 and the second protective member 350 may each include a porous film, and the porous film may be subjected to a release treatment on one surface.

[0075] The second protective member 350 may be arranged to protrude in an outward direction from one end of the second adhesive layer 330. In an exemplary embodiment, the stack of the first adhesive layer 320, the base material 310, and the second adhesive layer 330 may be arranged in a quadrilateral (square or rectangular) shape, and the second protective member 350 may protrude in an outward direction from one side surface among the four surfaces of the stack. Here, the outward direction refers to the direction opposite to the direction from the edge of the stack toward the center of the stack. In other words, the second protective member 350 may protrude from the stack in the direction where the ends of the positive tab 111 and the negative tab 121 of the electrode assembly 100 are located.

[0076] The second protective member 350 may include an adhesion part 351 in direct contact with the second adhesive layer 330 and a protruding part 352 protruding in an outward direction from the end of the second adhesive layer 330. Here, the length refers to the length in the direction of the surface on which the positive tab 111 and the negative tab 121 are located in the electrode assembly 100 and the surface provided at a position opposite to this surface, and the width refers to the length in the direction perpendicular to this length.

[0077] The protruding part 352 may protrude 0.5 cm to 8 cm in an outward direction from the boundary with the adhesion part 351. In other words, the protruding part 352 may protrude 0.5 cm to 8 cm in an outward direction from one end of the stack. The protruding part 352 may preferably protrude 1 cm to 5 cm in an outward direction, and more preferably protrude 1 cm to 3 cm.

[0078] Since the second protective member 350 includes the protruding part 352, the second protective member 350 can be easily separated from the second adhesive layer 330.

[0079] In order to improve the ease of separation, the protruding part 352 of the second protective member 350 according to the present invention may be folded one or more times. Specifically, the protruding part 352 may protrude while being folded one or more times toward the center of the second protective member 350.

[0080] The protruding portion 352 can form an angle with the other surface of the second protective member 350, that is, the surface on which the second adhesive layer 330 is not provided. Therefore, an attaching and detaching mechanism (not shown) for attaching the thermocompression termination tape 300 to the electrode assembly 100 and detaching the second protective member 350 can easily grip the second protective member 350.

[0081] The second protective member 350 can be separated at a portion of the adhesion portion 351 that contacts the edge of the second adhesive layer 330. Specifically, the second protective member 350 can be separated from the boundary between the adhesion portion 351 and the protruding portion 352 by a certain length toward the center of the second protective member 350, that is, toward the center of the stacked member. By reducing the area where the second protective member 350 and the second adhesive layer 330 adhere to each other, the adhesive force between the second protective member 350 and the second adhesive layer 330 can be reduced.

[0082] The second protective member 350 can further include an auxiliary first adhesive layer (not shown) coated with a temporary adhesive material on the surface opposite to the second adhesive layer 330, that is, the surface opposite to the surface that contacts the second adhesive layer 330. The auxiliary first adhesive layer can include the same temporary adhesive material as the first adhesive layer 320.

[0083] The auxiliary first adhesive layer can increase the adhesive force between the attaching and detaching mechanism and the second protective member 350, thereby improving the ease of detaching the second protective member 350. That is, the temporary adhesive force between the second protective member 350 and the attaching and detaching mechanism can be greater than the adhesive force between the second protective member 350 and the second adhesive layer 330.

[0084] Refer to Figure 4 , the electrode assembly 100 is a power generation element including a positive electrode 110, a negative electrode 120, and a separator 130 located between the positive electrode 110 and the negative electrode 120, and capable of charging and discharging.

[0085] The electrode assembly 100 can include a stacking / folding structure in which the positive electrode 110 and the negative electrode 120 are sequentially stacked on a separator 130 folded in a Z-shape.

[0086] The positive electrode 110 can include a positive electrode current collector, a positive electrode active material portion, and a positive electrode tab. The positive electrode current collector is a thin metal plate having excellent electrical conductivity, and can include, for example, aluminum (Al) foil.

[0087] The positive electrode 110 is coated with a positive electrode active material on one surface or both surfaces of the plate-shaped positive electrode current collector, and an uncoated portion where the positive electrode active material is not coated can be cut into the shape of a positive electrode tab to form the positive electrode tab 111.

[0088] The positive electrode active material may include: lithium cobalt oxide having a high working voltage and excellent capacity characteristics; lithium nickel oxide having a high reversible capacity and being easy to achieve a large-capacity battery; lithium nickel cobalt oxide in which part of nickel is replaced by cobalt; lithium nickel cobalt metal oxide in which part of nickel is replaced by manganese, cobalt or aluminum; lithium manganese-based oxide having excellent thermal stability and low cost; and lithium iron phosphate having excellent stability, etc.

[0089] The negative electrode 120 may include a negative electrode current collector, a negative electrode active material portion, and a negative electrode uncoated portion. The negative electrode current collector may include a thin metal plate having excellent electrical conductivity, for example, copper (Cu) or nickel (Ni) foil.

[0090] The negative electrode 120 is coated with a negative electrode active material on one surface or both surfaces of the negative electrode current collector. The negative electrode active material portion is formed by coating or applying the negative electrode active material. The negative electrode uncoated portion where the negative electrode active material is not coated or applied may be cut into the shape of a negative electrode tab to form a negative electrode tab 121.

[0091] For example, the negative electrode active material may be a carbon material such as crystalline carbon, amorphous carbon, carbon composite or carbon fiber, lithium metal, lithium alloy or the like. In this case, the negative electrode active material may further include, for example, non-graphite-based SiO (silica, silicon dioxide), SiC (silicon carbide) or the like designed for high capacity.

[0092] The positive electrode tab 111 and the negative electrode tab 121 transfer the electrons collected in the current collector to the external circuit, and may protrude from the electrode assembly of the stacked / folded structure in opposite directions or the same direction.

[0093] In the electrode assembly according to the present invention, the area of the negative electrode 120 included may be larger than the area of the positive electrode 110. Therefore, the area of the negative electrode 120 is set to be larger than the area of the corresponding positive electrode 110, so as to prevent lithium from precipitating on the negative electrode 120.

[0094] The separator 130 prevents an internal short circuit that may occur when the positive electrode 110 and the negative electrode 120 come into contact with each other, and may include a porous material to make the migration of ions between the electrodes easier.

[0095] In an exemplary embodiment, the separator 130 may include a substrate layer made of a porous material. For example, the substrate layer may include any one selected from the group consisting of polyethylene (PE), polystyrene (PS), polypropylene (PP), and copolymers of polyethylene (PE) and polypropylene (PP).

[0096] In another exemplary embodiment, the separator 130 may include a Safety Reinforced Separator ('SRS'). That is, the separator 130 may include a substrate layer made of a porous material and a coating formed by applying a mixed slurry of inorganic particles and a binder polymer and coated on the substrate layer. Preferably, the coating includes ceramic particles and has a uniform pore structure formed by the interstitial volume between the ceramic particles that are part of the active layer in addition to the pore structure of the separator substrate itself.

[0097] The coating may include ceramic particles including at least one selected from the group consisting of alumina, silica, TiO2, SiC, and MgAl2O4. Including such a coating enables the safety of the electrode assembly to be improved. The coating may further include a lithium salt.

[0098] The electrode assembly 100 according to the present invention may include an internal positive electrode 110a and an external positive electrode 110b.

[0099] More specifically, the electrode assembly 100 may have a structure in which the external positive electrode 110b is stacked on the outermost layer of a stack in which the positive electrode and the negative electrode are stacked between spaces formed by the separator 130 folded in a zigzag shape. Here, the positive electrode located between the spaces formed by the separator 130 folded in a zigzag shape is the internal positive electrode 110a, and the positive electrodes located at the top and bottom of the stack 101 are the external positive electrodes 110b. The internal positive electrode 110a may be coated with a positive electrode active material on both surfaces of the positive electrode current collector, and the external positive electrode 110b may be coated with a positive electrode active material on only one surface of the positive electrode current collector.

[0100] The external positive electrode 110b may have the same area as the internal positive electrode 110a or may have a smaller area.

[0101] The external positive electrode 110b includes a first surface coated with a positive electrode active material and a second surface not coated with a positive electrode active material. The external positive electrode 110b may include a first insulating member located on the first side and covering the positive electrode active material and the positive electrode tab 111, and a second insulating member located on the second side.

[0102] The thermocompression termination tape 300 according to the present invention may be located on the second surface of the external positive electrode 110b, and the external electrode 110b is located on the top of the stack 101.

[0103] Referring to Figure 5 , the secondary battery 1000 includes an electrode assembly 100, a case 200, and a thermocompression termination tape 300.

[0104] The housing 200 includes a lower housing 210 that houses the electrode assembly 100 therein and an upper housing 220 coupled to the lower housing 210. The housing 200 can be divided into the upper housing 220 and the lower housing 210 by bending the middle portion of a rectangular pouch film formed integrally. In addition, the lower housing 210 is formed with a receiving groove 211 for receiving the electrode assembly 100 by pressing process or the like and a sealing portion 212 for sealing with the upper housing 220. The sealing portion 212 can be formed along one side and the remaining three sides where the upper housing 220 and the lower housing 210 are in contact with each other integrally. The housing 200 includes two long sides where the upper housing 220 and the lower housing 210 face each other and two short sides where the upper housing 220 and the lower housing 210 face each other and are perpendicular to the two long sides. Here, the first electrode lead 140 and the second electrode lead 150 of the electrode assembly 100 are led out through the short sides opposite to the side where the upper housing 220 and the lower housing 210 are connected among the two short sides. In this case, insulating members (not shown) are respectively attached to the first electrode lead 140 and the second electrode lead 150 to prevent short circuits between the first electrode lead 140 and the second electrode lead 150 and the housing 200.

[0105] Figure 3 is a view showing the order of the process of manufacturing a secondary battery including the electrode assembly 100 temporarily adhered with the thermocompression termination tape 300 according to an exemplary embodiment of the present invention.

[0106] The manufacturing process of the secondary battery includes: separating the first protection member 340 (S10); temporarily adhering the first adhesive layer 320 to the electrode assembly 100, specifically, adhering to the second surface of the external positive electrode 110b stacked on the top of the stack 101 (S20); separating the second protection member 350 (S30), inserting the electrode assembly 100 temporarily adhered with the thermocompression termination tape 300 into the receiving groove 211 of the lower housing 210, and then coupling the lower housing 210 and the upper housing 220 to adhere the second adhesive layer 330 to the inner surface of the upper housing 220 (S40); thermocompression-sealing the lower housing 210 and the upper housing 220 (S50).

[0107] Although the present invention has been described with reference to the preferred embodiments, those skilled in the art will understand that the present invention can be variously modified and changed without departing from the technical spirit and scope of the present invention.

Claims

1. A hot press termination tape, comprising: a substrate; a first adhesive layer, the first adhesive layer being stacked on one surface of the substrate; a second adhesive layer, the second adhesive layer being stacked on the other surface of the substrate; a first protective member, the first protective member being disposed on one surface of the first adhesive layer opposite to the substrate; and a second protective member, the second protective member being disposed on one surface of the second adhesive layer opposite to the substrate, wherein the second protective member protrudes outwardly beyond at least one end of the second adhesive layer.

2. The hot press termination tape according to claim 1, wherein the first protective member and the second protective member each respectively comprise a porous film, and one surface of each porous film is subjected to a release treatment.

3. The hot press termination tape according to claim 1, wherein an auxiliary first adhesive layer is stacked on a surface of the second protective member opposite to the second adhesive layer.

4. The hot press termination tape according to claim 1, wherein the second protective member comprises an adhesion portion in direct contact with the second adhesive layer and a protruding portion protruding outwardly beyond an end of the second adhesive layer, and wherein the protruding portion is folded one or more times in a direction toward the center of the second protective member.

5. The hot press termination tape according to claim 4, wherein the second protective member is separated at a portion where the adhesion portion contacts an edge of the second adhesive layer.

6. The hot press termination tape according to claim 1, wherein the first adhesive layer comprises one or more selected from the group consisting of a rubber-based adhesive, an acrylic adhesive, and a silicone adhesive.

7. The hot press termination tape according to claim 1, wherein the melting temperature of the second adhesive layer is lower than 140 °C.

8. The hot press termination tape according to claim 7, wherein the second adhesive layer comprises any one or more of a hot melt adhesive, a heat-activated adhesive, and a pressure-sensitive adhesive.

9. The hot press termination tape according to claim 1, wherein the substrate has an insulating property.

10. The hot press termination tape according to claim 9, wherein the substrate comprises a polymer resin film, and wherein the polymer resin comprises any one or more of polyethylene (PE), polyphenylene ether (PPE), polyimide (PI), polypropylene (PP), and polyethylene terephthalate (PET).

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