Soft package battery packaging structure, soft package battery and soft package battery packaging device

Abstract

The utility model relates to a soft package battery packaging structure, a soft package battery and a soft package battery packaging device.In the soft package battery packaging structure, a magnetic layer is enclosed to form a containing cavity, and the containing cavity is used for containing a roll core; the melting layer is arranged on the inner surface of the magnetic layer; the plastic layer is arranged on the outer surface of the magnetic layer; the magnetic layer generates heat energy in an electromagnetic induction state and conducts the heat energy to the melting layer, so that the opening of the containing cavity is bonded and sealed, and packaging of the roll core is achieved. The magnetic layer is arranged between the melting layer and the plastic layer, the to-be-packaged soft package battery is formed after the roll core is arranged in the accommodating cavity, and when the to-be-packaged soft package battery is placed in the alternating magnetic field, the magnetic layer generates heat energy in an electromagnetic induction state and conducts the heat energy to the melting layer; and the opening of the accommodating cavity is bonded and sealed after the melting layer is heated, so that the heat loss is reduced, the heating efficiency of the packaging material is improved, the packaging material is uniformly heated, and the packaging efficiency and the packaging effect consistency are improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a soft-pack battery packaging structure, a soft-pack battery, and a soft-pack battery packaging device. Background Art

[0002] Soft-pack lithium batteries are soft-pack batteries covered with a polymer shell, for example, the soft-pack lithium battery is formed by wrapping the soft-pack lithium battery with an aluminum-plastic film. At present, the packaging technology of soft-pack lithium batteries usually relies on electric heating coils to heat (resistance wire heating), and transfers heat from the head to the packaging material (such as aluminum-plastic film) by contact heat conduction. The packaging material is usually composed of multiple layers of different materials. For example, the packaging material includes a top layer, a middle layer and a bottom layer. During the heat transfer process, the heat from the head is transferred to the top layer of the packaging material, and the heat transferred to the top layer continues to be transferred to the middle layer by heat conduction. The heat that reaches the middle layer continues to be transferred to the bottom layer by heat conduction. After being heated and melted by the bottom layer, they are bonded together, which has a sealing effect on the soft-pack battery.

[0003] In the related art, during the packaging process of soft-pack lithium batteries, due to the differences in thermal conductivity coefficients of each layer of the packaging material, the heat generated by the electric heating coil is transferred to the bottom layer layer by layer, causing a large amount of heat loss. In addition, the heat transferred to the head (the part of the head that is not in contact with the packaging material) escapes into the air and causes loss, resulting in large heat loss, poor heating uniformity, and low packaging efficiency. Utility Model Content

[0004] Based on this, it is necessary to provide a soft-pack battery packaging structure, soft-pack battery and soft-pack battery packaging device that can reduce heat loss, have high heating efficiency of packaging materials, heat packaging materials evenly, and improve packaging efficiency and packaging effect consistency in response to the problems existing in the above-mentioned existing soft-pack lithium batteries.

[0005] In a first aspect, the present application provides a soft-pack battery packaging structure, comprising:

[0006] A magnetic layer, wherein the magnetic layer encloses a receiving cavity, and the receiving cavity is used to receive and set the winding core;

[0007] A molten layer, the molten layer is arranged on the inner surface of the magnetic layer;

[0008] A plastic layer, the plastic layer being arranged on the outer surface of the magnetic layer;

[0009] The magnetic layer is used to generate heat energy under electromagnetic induction and conduct the heat energy to the melting layer so that the opening of the accommodating cavity is bonded and sealed.

[0010] In one embodiment, the magnetic layer includes a ferromagnetic layer or a ferromagnetic metal mixed layer.

[0011] In one embodiment, a metal layer is also included;

[0012] The metal layer is disposed between the molten layer and the magnetic layer;

[0013] Alternatively, the metal layer is disposed between the plastic layer and the magnetic layer.

[0014] In one embodiment, the metal layer includes an aluminum layer or a steel layer.

[0015] In one embodiment, a first bonding layer is provided between the melting layer and the magnetic layer;

[0016] And / or, a second adhesive layer is provided between the plastic layer and the magnetic layer.

[0017] In one embodiment, the plastic layer is a nylon layer, and the fusible layer is a polypropylene layer.

[0018] In a second aspect, the present application provides a soft-pack battery, including a roll core and a plurality of soft-pack battery packaging structures as described above;

[0019] The winding core is arranged in the soft-pack battery packaging structure.

[0020] In a third aspect, the present application provides a soft-pack battery packaging device, which is applied to the above-mentioned soft-pack battery. The soft-pack battery packaging device includes an electromagnetic induction device, and the electromagnetic induction device is provided with an induction area, and the induction area is used to place the soft-pack battery.

[0021] In one embodiment, the electromagnetic induction device includes a support frame and an electromagnetic coil;

[0022] The electromagnetic coil is arranged on a support frame, the support frame is provided with an induction zone, the electromagnetic coil is used to generate an alternating magnetic field when powered on, and the induction zone is located within the alternating magnetic field of the electromagnetic coil.

[0023] In one embodiment, the electromagnetic induction device further comprises a support plate and a clamp; the support plate is located in the induction area;

[0024] The support plate is used to support the soft-pack battery; the clamp is used to close the opening of the soft-pack battery.

[0025] One of the above technical solutions has the following advantages and beneficial effects:

[0026] The above-mentioned soft-pack battery packaging structure includes a magnetic layer, a melting layer and a plastic layer. The magnetic layer encloses a receiving cavity, and the receiving cavity is used to receive and set the winding core; the melting layer is arranged on the inner surface of the magnetic layer; the plastic layer is arranged on the outer surface of the magnetic layer; the magnetic layer generates heat energy under electromagnetic induction, and conducts the heat energy to the melting layer, so that the opening of the receiving cavity is bonded and sealed, thereby achieving the packaging of the winding core. In the present application, a magnetic layer is arranged between the melting layer and the plastic layer, and then the winding core is arranged in the receiving cavity to form a soft-pack battery to be packaged. When the soft-pack battery to be packaged is placed in an alternating magnetic field, the magnetic layer generates heat energy under electromagnetic induction, and conducts the heat energy to the melting layer, so that the opening of the receiving cavity is bonded and sealed after the melting layer is heated, thereby obtaining a packaged soft-pack battery, thereby reducing heat loss and improving the heating efficiency of the packaging material. The packaging material is heated evenly, and the packaging efficiency and packaging effect consistency are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of a soft-pack battery packaging structure to be packaged in an embodiment of the present application;

[0028] Figure 2 This is a schematic diagram of the packaging structure of the soft-pack battery in the embodiment of the present application after packaging;

[0029] Figure 3 This is a first structural schematic diagram of the soft-pack battery packaging structure in an embodiment of the present application;

[0030] Figure 4 This is a second structural schematic diagram of the soft-pack battery packaging structure in the embodiment of the present application;

[0031] Figure 5 This is a third structural schematic diagram of the soft-pack battery packaging structure in the embodiment of the present application;

[0032] Figure 6 This is a first structural schematic diagram of a soft-pack battery packaging device in an embodiment of the present application;

[0033] Figure 7 This is a second structural schematic diagram of the soft-pack battery packaging device in the embodiment of the present application.

[0034] Reference numerals:

[0035] 110, magnetic layer; 120, melting layer; 130, plastic layer; 140, opening; 150, metal layer; 160, first adhesive layer; 170, second adhesive layer; 200, electromagnetic induction device; 210, induction area; 230, electromagnetic coil; 240, support plate. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0037] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover inclusions that are not listed. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0038] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0039] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0040] In addition, the term "plurality" shall mean two or more.

[0041] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0042] In one embodiment, Figure 1 and Figure 2As shown, a soft-pack battery packaging structure is provided, including a magnetic layer 110, a melting layer 120 and a plastic layer 130, wherein the magnetic layer 110 is enclosed to form a receiving cavity, and the receiving cavity is used to receive and set a winding core; the melting layer 120 is arranged on the inner surface of the magnetic layer 110; the plastic layer 130 is arranged on the outer surface of the magnetic layer 110; wherein the magnetic layer 110 is used to generate heat energy under electromagnetic induction state, and conduct the heat energy to the melting layer 120, so that the opening 140 of the receiving cavity is bonded and sealed.

[0043] Among them, the soft-pack battery packaging structure is a film-like structure, that is, a film composed of a magnetic layer 110, a melting layer 120 and a plastic layer 130. The soft-pack battery packaging structure is used to wrap the core to achieve the packaging of the core. The shape of the soft-pack battery packaging structure can be determined according to the shape of the core. For example, if the core is cylindrical, the shape of the soft-pack battery packaging structure is cylindrical; for another example, if the core is square, the shape of the soft-pack battery packaging structure is square.

[0044] The inner surface and the outer surface of the magnetic layer 110 correspond to each other, the melting layer 120 is arranged on the inner surface of the magnetic layer 110, and the plastic layer 130 is arranged on the outer surface of the magnetic layer 110. For example, the melting layer 120 can be tightly attached to the inner surface of the magnetic layer 110 by gluing or pressing, so as to enhance the connection strength between the melting layer 120 and the magnetic layer 110; similarly, the plastic layer 130 can be tightly attached to the outer surface of the magnetic layer 110 by gluing or pressing, so as to enhance the connection strength between the plastic layer 130 and the magnetic layer 110.

[0045] The melting layer 120 may be a material layer with a heating and melting function, which means that the material layer can be melted and bonded when heated to a certain temperature. In addition, considering that an electrolyte is provided in the winding core, the melting layer 120 may also be a material layer resistant to electrolyte corrosion. The plastic layer 130 is a material layer with heat resistance, wear resistance, puncture resistance and bending resistance, and the plastic layer 130 may be used to protect the magnetic layer 110.

[0046] The magnetic layer 110 refers to a material layer containing magnetic materials, and the magnetic layer 110 can be used to generate heat energy under electromagnetic induction. For example, the soft-pack battery packaging structure with a winding core is placed in an alternating magnetic field, and the magnetic layer 110 can cut the alternating magnetic lines of force, and then the magnetic layer 110 generates an alternating current (i.e., eddy current). The eddy current causes the carriers in the magnetic layer 110 containing magnetic materials to perform "Brownian motion", and the carriers collide and rub against each other to generate heat energy. Furthermore, a melting layer 120 is set based on the inner surface of the magnetic layer 110, and then the heat energy generated by the magnetic layer 110 is directly conducted to the melting layer 120. After the melting layer 120 is heated and melted, the opening 140 of the accommodating cavity where the winding core is set is bonded and sealed, which greatly reduces the heat loss.

[0047] Exemplarily, a magnetic layer 110 having a molten layer 120 on the inner surface and a plastic layer 130 on the outer surface is enclosed to form a receiving cavity, the winding core is arranged in the receiving cavity, and then the opening 140 of the receiving cavity is pressed and closed and placed in an alternating magnetic field. The magnetic layer 110 generates heat based on electromagnetic induction, and the magnetic layer 110 directly acts the generated heat on the molten layer 120, so that after the molten layer 120 is heated and melted, the opening 140 of the receiving cavity is bonded and sealed, thereby achieving a sealed package for the winding core. It should be noted that in an alternating magnetic field, the magnetic layer 110 generates heat by itself and the electromagnetic field can penetrate the interior of the packaging structure, so that the molten layer 120 is heated more evenly, which is conducive to improving the consistency of the packaging effect.

[0048] In the above-mentioned embodiment, the magnetic layer 110 is enclosed to form a receiving cavity, and the receiving cavity receives and sets the winding core; the melting layer 120 is set on the inner surface of the magnetic layer 110; the plastic layer 130 is set on the outer surface of the magnetic layer 110; the magnetic layer 110 generates heat energy under the electromagnetic induction state, and conducts the heat energy to the melting layer 120, so that the opening 140 of the receiving cavity is bonded and sealed, thereby achieving the packaging of the winding core. In the present application, the magnetic layer 110 is set between the melting layer 120 and the plastic layer 130, and then the winding core is set in the receiving cavity to form a soft-pack battery to be packaged. When the soft-pack battery to be packaged is placed in an alternating magnetic field, the magnetic layer 110 generates heat energy under the electromagnetic induction state, and conducts the heat energy to the melting layer 120, so that the melting layer 120 is heated and the opening 140 of the receiving cavity is bonded and sealed, thereby obtaining a packaged soft-pack battery, thereby reducing heat loss, improving the heating efficiency of the packaging material, and evenly heating the packaging material, thereby improving the packaging efficiency and consistency of the packaging effect.

[0049] In one example, the magnetic layer 110 includes a ferromagnetic layer.

[0050] The ferromagnetic layer refers to a thin sheet containing ferromagnetic materials. For example, the magnetic layer 110 is a ferromagnetic layer, which is arranged between the melting layer 120 and the plastic layer 130. The core is placed in a packaging structure after the accommodating cavity is enclosed, and then the opening 140 of the accommodating cavity is pressed and closed and placed in an alternating magnetic field. The ferromagnetic layer generates heat based on electromagnetic induction, and the magnetic layer 110 directly conducts the generated heat to the melting layer 120, so that after the melting layer 120 is heated and melted, the opening 140 of the accommodating cavity is bonded and sealed, thereby achieving a sealed package of the core, greatly reducing heat loss and improving the uniformity of heating of the packaging material.

[0051] In one example, the magnetic layer 110 includes a ferromagnetic metal mixed layer.

[0052] The ferromagnetic metal mixed layer refers to a thin sheet composed of a mixture of ferromagnetic material and other metal materials. It should be noted that the other metal material may be, but is not limited to, steel or aluminum.

[0053] For example, the magnetic layer 110 is a ferromagnetic metal mixed layer, which is arranged between the molten layer 120 and the plastic layer 130. The core is placed in a packaging structure after being enclosed to form a receiving cavity. The opening 140 of the receiving cavity is then pressed closed and placed in an alternating magnetic field. The ferromagnetic metal mixed layer generates heat based on electromagnetic induction, and the magnetic layer 110 directly conducts the generated heat to the molten layer 120. After the molten layer 120 is heated and melted, the opening 140 of the receiving cavity is bonded and sealed, thereby achieving a sealed package for the core. At the same time, other metal materials are arranged on the ferromagnetic metal mixed layer to enhance the strength of the ferromagnetic metal mixed layer, which can prevent moisture from entering the core and prevent the electrolyte of the core from leaking out of the packaging structure, indicating the barrier effect of the packaging structure.

[0054] In one embodiment, Figure 3 As shown, the soft-pack battery packaging structure further includes a metal layer 150 ; the metal layer 150 is disposed between the melting layer 120 and the magnetic layer 110 .

[0055] The metal layer 150 can be used to prevent moisture from entering the core and prevent the electrolyte of the core from leaking out of the packaging structure. For example, the metal layer 150 can be, but is not limited to, an aluminum layer or a steel layer.

[0056] For example, the metal layer 150 may be closely attached and disposed between the melting layer 120 and the magnetic layer 110 by gluing or pressing. Based on the fact that the metal layer 150 is arranged between the melting layer 120 and the magnetic layer 110, and the metal layer 150 is arranged between the melting layer 120 and the plastic layer 130, the packaging structure to be packaged is composed of the melting layer 120, the metal layer 150, the magnetic layer 110 and the plastic layer 130. The packaging structure to be packaged is enclosed to form a receiving cavity, and then the core can be arranged in the receiving cavity, and then the opening 140 of the receiving cavity is pressed and closed and placed in an alternating magnetic field. The magnetic layer 110 generates heat based on electromagnetic induction, and the magnetic layer 110 conducts the generated heat through the metal layer 150 to act on the melting layer 120, so that after the melting layer 120 is heated and melted, the opening 140 of the receiving cavity is bonded and sealed, thereby realizing the sealed packaging of the core. At the same time, the metal layer 150 realizes the barrier effect on the core, avoids the leakage of the electrolyte of the core and blocks the external moisture from entering the core, thereby enhancing the reliability of the packaging structure.

[0057] In one example, if Figure 4 As shown, the metal layer 150 is disposed between the plastic layer 130 and the magnetic layer 110 .

[0058] The metal layer 150 may be, but is not limited to, an aluminum layer or a steel layer.

[0059] For example, the metal layer 150 can be closely attached to the plastic layer 130 and the magnetic layer 110 by gluing or pressing. Based on the metal layer 150 being arranged between the plastic layer 130 and the magnetic layer 110, and the metal layer 150 being arranged between the melting layer 120 and the plastic layer 130, a receiving cavity is formed by enclosing the packaging structure to be packaged, and then the core can be arranged in the receiving cavity, and then the opening 140 of the receiving cavity is pressed and closed and placed in an alternating magnetic field, and the magnetic layer 110 generates heat based on electromagnetic induction, and the magnetic layer 110 directly acts the generated heat on the melting layer 120, so that after the melting layer 120 is heated and melted, the opening 140 of the receiving cavity is bonded and sealed, thereby realizing the sealed packaging of the core, improving the heating efficiency of the packaging material, and the packaging material is heated evenly. At the same time, the metal layer 150 realizes the barrier effect on the core, avoiding the leakage of the electrolyte of the core and blocking the external moisture from entering the core, thereby enhancing the reliability of the packaging structure.

[0060] In one embodiment, Figure 5 As shown, a first adhesive layer 160 is disposed between the melting layer 120 and the magnetic layer 110 ; and / or a second adhesive layer 170 is disposed between the plastic layer 130 and the magnetic layer 110 .

[0061] The first adhesive layer 160 is provided with an adhesive, and the second adhesive layer 170 is provided with an adhesive. It should be noted that the adhesive used in the first adhesive layer 160 can be an adhesive based on high thermal conductivity.

[0062] By disposing the first adhesive layer 160 between the melting layer 120 and the magnetic layer 110, the bonding strength between the melting layer 120 and the magnetic layer 110 is enhanced, and the gap between the melting layer 120 and the magnetic layer 110 caused by the error of the plane smoothness between the melting layer 120 and the magnetic layer 110 is avoided, so that the heat conduction effect of the magnetic layer 110 to the melting layer 120 can be further improved. By disposing the second adhesive layer 170 between the plastic layer 130 and the magnetic layer 110, the bonding strength between the plastic layer 130 and the magnetic layer 110 is enhanced.

[0063] In one example, the plastic layer 130 is a nylon layer, and the molten layer 120 is a polypropylene layer.

[0064] Based on the nylon layer being arranged on the outer surface of the magnetic layer 110, the polypropylene layer being arranged on the inner surface of the magnetic layer 110, and then the winding core being arranged in the receiving cavity, a soft-pack battery to be packaged is formed. When the soft-pack battery to be packaged is placed in an alternating magnetic field, the magnetic layer 110 generates heat energy under electromagnetic induction, and conducts the heat energy to the polypropylene layer, so that the polypropylene layer is heated and the opening 140 of the receiving cavity is bonded and sealed to obtain a packaged soft-pack battery, thereby reducing heat loss and improving the heating efficiency of the packaging material. The packaging material is heated evenly, and the packaging efficiency and packaging effect consistency are improved. It should be noted that in another example, the plastic layer 130 can also be a polyester material layer, and the melting layer 120 can also be a thin film material layer such as polyethylene, ethylene acrylic acid copolymer, polypropylene or ionomer resin.

[0065] In one embodiment, a soft-pack battery is further provided, comprising a roll core and a plurality of soft-pack battery packaging structures as described above; the roll core is disposed in the soft-pack battery packaging structure.

[0066] Among them, the core can be a lithium-ion core, and correspondingly, the soft-pack battery is a soft-pack lithium-ion battery.

[0067] For the specific description of the soft-pack battery packaging structure, please refer to the specific description of the soft-pack battery packaging structure in the above embodiment, which will not be repeated here.

[0068] Based on setting the melting layer 120 on the inner surface of the magnetic layer 110 and the plastic layer 130 on the outer surface of the magnetic layer 110, the magnetic layer 110 with the melting layer 120 on the inner surface and the plastic layer 130 on the outer surface is enclosed to form a receiving cavity, and the packaging structure to be packaged is obtained. By setting the winding core in the receiving cavity, and then pressing and closing the opening 140 of the receiving cavity and placing it in an alternating magnetic field, the magnetic layer 110 generates heat based on electromagnetic induction, and the magnetic layer 110 directly acts on the melting layer 120 with the generated heat, so that after the melting layer 120 is heated and melted, the opening 140 of the receiving cavity is bonded and sealed, thereby sealing the winding core and obtaining a packaged soft-pack battery, which reduces heat loss, improves the heating efficiency of the packaging material, and evenly heats the packaging material, thereby improving the packaging efficiency and consistency of the packaging effect.

[0069] In one embodiment, Figure 6 As shown, a soft-pack battery packaging device is also provided, which is applied to the above-mentioned soft-pack battery. The soft-pack battery packaging device includes an electromagnetic induction device 200. The electromagnetic induction device 200 is provided with an induction area 210. The induction area 210 is used to place the soft-pack battery.

[0070] Among them, the specific description of the soft-pack battery packaging structure and the soft-pack battery can refer to the specific description of the soft-pack battery packaging structure and the soft-pack battery in the above embodiments, which will not be repeated here.

[0071] The electromagnetic induction device 200 is provided with an induction area 210 . The electromagnetic induction device 200 can be used to generate an alternating magnetic field, and the alternating magnetic field is located in the induction area 210 .

[0072] By placing the soft-pack battery to be packaged in the induction area 210 of the electromagnetic induction device 200, when the electromagnetic induction device 200 is powered on, the induction area 210 of the electromagnetic induction device 200 can generate an alternating magnetic field, and then the magnetic layer 110 can cut the alternating magnetic lines of force, and the magnetic layer 110 generates an alternating current, so that the carriers in the magnetic layer 110 containing magnetic materials collide and rub against each other to generate heat energy. The magnetic layer 110 directly acts the generated heat on the melting layer 120, so that after the melting layer 120 is heated and melted, the opening 140 of the accommodating cavity is bonded and sealed, thereby sealing and packaging the core to obtain the packaged soft-pack battery, thereby reducing heat loss, improving the heating efficiency of the packaging material, and evenly heating the packaging material, thereby improving the packaging efficiency and packaging effect consistency.

[0073] In one embodiment, Figure 7 As shown, the electromagnetic induction device includes a support frame and an electromagnetic coil 230; the electromagnetic coil 230 is arranged on the support frame, and the support frame is provided with an induction area 210. The electromagnetic coil 230 is used to generate an alternating magnetic field when powered on, and the induction area 210 is located in the alternating magnetic field of the electromagnetic coil 230.

[0074] Among them, the support frame can be used to install the electromagnetic coil 230, and the support frame can also be used to support the soft-pack battery to be packaged. The electromagnetic coil 230 is used to connect to an external power supply, and the external power supply can be used to transmit high-frequency and high-voltage current to the electromagnetic coil 230, so that after the high-speed changing high-frequency and high-voltage current flows through the battery coil, the electromagnetic coil 230 generates a high-speed changing alternating magnetic field. The induction area 210 is located in the alternating magnetic field of the electromagnetic coil 230. In one example, the electromagnetic coil 230 may include a coil and a magnet rod, and the coil is wound around the magnet rod.

[0075] Exemplarily, the induction zone 210 can be arranged above the electromagnetic coil 230, and the soft-pack battery to be packaged is obtained by setting the winding core in the packaging structure to be packaged; the opening 140 of the soft-pack battery to be packaged is pressed and closed and then placed in the induction zone 210 of the support frame; the electromagnetic coil 230 is powered by an external power supply, and a high-frequency and high-voltage current that changes rapidly is transmitted to the electromagnetic coil 230, so that the electromagnetic coil 230 generates a high-speed changing alternating magnetic field, and the surface of the soft-pack battery to be packaged can cut the alternating magnetic lines of force, so that the magnetic layer 110 partially generates an alternating current, and the alternating current causes the carriers in the magnetic layer 110 containing ferromagnetic materials to collide and rub against each other to generate heat energy, and the magnetic layer 110 applies the generated heat to the melting layer 120, so that after the melting layer 120 is heated and melted, the opening 140 of the accommodating cavity is bonded and sealed, thereby sealing the winding core and obtaining the packaged soft-pack battery, thereby reducing heat loss and improving the heating efficiency of the packaging material. The packaging material is heated evenly, and the packaging efficiency and packaging effect consistency are improved.

[0076] In one embodiment, Figure 7 As shown, the electromagnetic induction device further includes a support plate 240 and a clamp; the support plate 240 is located in the induction area 210; the support plate 240 is used to support the soft-pack battery; and the clamp is used to close the opening 140 of the soft-pack battery.

[0077] The support plate 240 may be, but is not limited to, a ceramic glass plate, and the opening 140 of the soft-pack battery refers to the opening 140 of the accommodating cavity of the packaging structure.

[0078] The core is placed in the packaging structure to be packaged to obtain a soft-pack battery to be packaged. The opening 140 of the soft-pack battery is clamped and closed by a clamp and then placed on a support plate 240. The electromagnetic coil 230 is energized to generate a high-speed changing alternating magnetic field. The soft-pack battery to be packaged cuts the alternating magnetic lines of force, so that the magnetic layer 110 partially generates an alternating current, thereby generating heat energy. The magnetic layer 110 applies the generated heat to the melting layer 120, so that the melting layer 120 is heated and melted, and then the opening 140 of the soft-pack battery is bonded and sealed, thereby sealing the core, and obtaining a packaged soft-pack battery, which reduces heat loss and improves the heating efficiency of the packaging material. The packaging material is heated evenly, and the packaging efficiency and consistency of the packaging effect are improved.

[0079] It should be noted that the soft-pack battery packaging device may also include components such as a shell, and the specific soft-pack battery packaging device may include more components than those described in the above embodiments, or combine certain components, or have a different component arrangement.

[0080] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0081] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A soft pack battery packaging structure, characterized in that: include: A magnetic layer, wherein the magnetic layer encloses a receiving cavity, and the receiving cavity is used to receive and set the winding core; A melting layer, the melting layer being arranged on the inner surface of the magnetic layer; A plastic layer, wherein the plastic layer is arranged on an outer surface of the magnetic layer; The magnetic layer is used to generate heat energy under electromagnetic induction and conduct the heat energy to the melting layer so that the opening of the accommodating cavity is bonded and sealed.

2. The soft pack battery packaging structure according to claim 1, characterized in that: The magnetic layer includes a ferromagnetic layer or a ferromagnetic metal mixed layer.

3. The soft pack battery packaging structure according to claim 1, characterized in that: Also including a metal layer; The metal layer is disposed between the molten layer and the magnetic layer; Alternatively, the metal layer is disposed between the plastic layer and the magnetic layer.

4. The soft pack battery packaging structure according to claim 3, characterized in that: The metal layer includes an aluminum layer or a steel layer.

5. The soft pack battery packaging structure according to claim 1, characterized in that: A first bonding layer is provided between the melting layer and the magnetic layer; And / or, a second adhesive layer is provided between the plastic layer and the magnetic layer.

6. The soft pack battery packaging structure according to any one of claims 1 to 5, characterized in that: The plastic layer is a nylon layer, and the melting layer is a polypropylene layer.

7. A soft pack battery, characterized in that: A winding core and a plurality of soft-pack battery packaging structures according to any one of claims 1 to 6; The winding core is arranged in the soft-pack battery packaging structure.

8. A soft pack battery packaging device, characterized in that: Applied to the soft-pack battery according to claim 7, the soft-pack battery packaging device includes an electromagnetic induction device, and the electromagnetic induction device is provided with an induction area, and the induction area is used to place the soft-pack battery.

9. The soft pack battery packaging device according to claim 8, characterized in that: The electromagnetic induction device comprises a support frame and an electromagnetic coil; The electromagnetic coil is arranged on the support frame, the support frame is provided with the induction area, the electromagnetic coil is used to generate an alternating magnetic field when powered on, and the induction area is located in the alternating magnetic field of the electromagnetic coil.

10. The soft pack battery packaging device according to claim 9, characterized in that: The electromagnetic induction device further comprises a support plate and a clamp; the support plate is located in the induction area; The support plate is used to support the soft-pack battery; the clamp is used to close the opening of the soft-pack battery.

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