WO2006059455A1

WO2006059455A1 - Case for film-packed electrical device and method for producing such case for film-packed electrical device

Info

Publication number: WO2006059455A1
Application number: PCT/JP2005/020279
Authority: WO
Inventors: Takeshi Kanai; Hisako Nakano
Original assignee: Nec Corporation; Fuji Jukogyo Kabushiki Kaisha
Priority date: 2004-11-30
Filing date: 2005-11-04
Publication date: 2006-06-08
Also published as: JP5815793B2; JP2014150078A; JP5620464B2; JPWO2006059455A1; JP2013101950A; JP5255210B2

Abstract

Disclosed is a cell case (10) for housing a film-packed battery (1) which comprises an electric power generating element (2) and a laminate film so arranged as to wrap the electric power generating element (2). The cell case (10) comprises a first frame (11) which is provided with an opening (13) in a position corresponding to the electric power generating element (2) and a holding member (30) arranged in a housing portion (15) which is formed in a second frame (12). The holding member (30) holds the film-packed battery (1), but is not arranged within the opening (13).

Description

Specification

Film-covered electrical device case and method for producing the film-covered electrical device case

Technical field

The present invention relates to a film-covered electrical device case for storing a film-covered electrical device in which an electrical device element is contained in an exterior film, represented by a battery or a capacitor, and a production of the film-covered electrical device case Regarding the method.

Background art

[0002] In recent years, the development of electric vehicles and hybrid electric vehicles (hereinafter also simply referred to as “electric vehicles etc.”) equipped with motor-driven knotters is being promoted rapidly. Naturally, batteries mounted on electric vehicles and the like are also required to be lighter and thinner in order to improve the driving characteristics and mileage of electric vehicles. In order to make the battery lighter and thinner, a metal layer such as aluminum and a heat-bondable resin layer are laminated on the outer package via an adhesive layer to make it thin! An exterior battery has been developed! In general, a laminate material has a structure in which both surfaces of a thin metal layer such as aluminum are covered with a thin resin layer, and is resistant to acids and alkalis, and is lightweight and flexible.

[0003] While a film-covered battery in which a power generation element is covered with a laminate material is lightweight, it has a low rigidity and is easily affected by vibration and impact. Therefore, when mounted on a vehicle, it is necessary to solve these problems. . In order to solve this problem, a technique for sandwiching and fixing a film-clad battery in a case as disclosed in Japanese Patent Application Laid-Open No. 10-012278 has been known. This method is advantageous in terms of securing rigidity or protecting against impact force, but it is difficult to absorb vibration.

[0004] As a method of absorbing vibration, there is a method of compressing and using low-hardness rubber. However, even if the rubber has low hardness, it is known that the reaction force when the rubber is compressed rises more rapidly than the amount of compressive deformation, and it is difficult to obtain good vibration absorption characteristics. Met. In the case of rubber, the weight may increase. On the other hand, Japanese Patent Application Laid-Open No. 2004-39485 discloses a module battery in which a film-clad battery is housed in a case and a potting material is filled between the case and the film-clad battery.

Disclosure of the invention

Problems to be solved by the invention

[0006] The structure disclosed in Japanese Patent Application Laid-Open No. 2004-39485 does not cause the reaction force to rise abruptly like rubber, and can be lighter than rubber. However, the structure disclosed in Patent Document 2 is filled between the case and the battery so that the potting material covers the entire battery including the power generation element. This may cause problems with heat dissipation characteristics. In other words, the potting material functions as a heat insulating material, and heat from the power generation element cannot be dissipated to the outside, and the battery becomes overheated, resulting in shortening the battery life.

[0007] Although it is lighter than rubber, connecting a plurality of batteries filled with potting material without gaps between the case and the battery to form an assembled battery still increases the weight. End up.

[0008] The present invention has been made in view of the problems as described above, and a case for a film-covered electrical device capable of obtaining good vibration absorption characteristics and cooling characteristics while suppressing an increase in weight and the film It is an object of the present invention to provide a method for manufacturing a case for an exterior electrical device.

Means for solving the problem

The case for a film-clad electrical device of the present invention is for a film-clad electrical device that houses a film-clad electrical device that includes a chargeable / dischargeable electrical device element and a packaging film that surrounds the electrical device element. A frame member having an opening formed in a region corresponding to the electric device element, and a holding material housed in a housing portion formed in the frame member, the holding material being a film exterior electric It is characterized by holding the device.

[0010] Further, the case for a film-covered electrical device of the present invention has a film exterior having a chargeable / dischargeable electrical device element and an exterior film disposed so as to surround the electrical device element. A film-covered electrical device case that houses the electrical device is sandwiched between the film-covered electrical device on the clamping surface, and an opening is formed in a region corresponding to the electrical device element. And a holding material for holding the film-clad electrical device provided on the surface.

[0011] The film-covered electrical device case of the present invention configured as described above has a holding material in the housing portion of the frame member in which the opening is formed or on the holding surface, and this holding material is the film exterior. Holds electrical devices. That is, since the holding material is not provided in the opening, the heat generated by the electric device element is not stored, and when the cooling air is supplied, the holding material does not hinder cooling. . In addition, since the film-clad electrical device is held by the holding material, it is possible to prevent external impact or vibration from being transmitted to the film-clad electrical device. Furthermore, it is possible to reduce the weight of the electrical device element as much as there is no holding material.

[0012] In the film-covered electrical device case of the present invention, the holding material may hold at least the corners of the rectangular film-covered electrical device. Since the case for a film-clad electrical device of the present invention holds a corner portion where the holding material is particularly susceptible to damage, it is possible to effectively suppress vibration, impact, and the like from being applied to the corner portion.

[0013] In the film-covered electrical device case of the present invention, the holding material seals the gap between the electrode and the opening that extends the electrode that extends the film-covered electrical device force to the outside. It may be arranged. In this case, when cooling air is supplied to the opening, the cooling air does not leak from the gap! Therefore, it is possible to suppress a decrease in cooling efficiency.

[0014] Further, the holding material for the holding material of the film-covered electrical device case of the present invention is disposed in a region other than the gas exhaust port for exhausting the gas generated inside the film-covered electrical device. May be. In this case, since the holding material does not hinder the exhaust of the gas from the gas discharge port, the gas can be discharged in a desired direction. Further, in this case, since the number of places to be held by the holding material can be increased, the vibration absorption characteristics can be further improved.

[0015] The holding material for the film-covered electrical device case of the present invention is a foamable resin. It may be an ultraviolet curable resin. In particular, in the case of an ultraviolet curable resin, curing is performed by irradiating ultraviolet rays without heating, so that there is no adverse effect on the film-covered electrical device due to heat.

[0016] The method for producing a case for a film-covered electrical device of the present invention includes a film having a chargeable / dischargeable electrical device element and an exterior film disposed so as to surround the electrical device element. In the method for manufacturing a case for an exterior electrical device, the film exterior electrical device is retained when a frame member having an opening corresponding to an electrical device element and a storage portion for accommodating the film exterior electrical device is formed. It includes a step of forming the holding material to be held in the storage portion.

[0017] In addition, the method for producing a case for a film-covered electrical device of the present invention houses a film-covered electrical device that has a chargeable / dischargeable electrical device element and an exterior film that surrounds the electrical device element. In the method for manufacturing a case for film-clad electrical devices, the film-clad electrical device is held when the frame-clad electrical device is sandwiched between the clamping surfaces and a frame member having an opening in a region corresponding to the electrical device element is formed. And a step of forming the holding material to be formed on the holding surface of the frame member.

[0018] According to the method for manufacturing a film-covered electrical device case of the present invention as described above, since the holding material can be formed in the storage portion simultaneously with the formation of the frame member, the holding material is separately provided in the storage portion. The process of filling or attaching can be omitted. In addition, since the manufacturing method of the present invention forms the holding material, the degree of freedom of the shape of the holding material is increased.

[0019] According to the present invention, since the holding material is provided only in the housing portion of the frame member, thereby holding the film-clad electrical device and no holding material is provided in the opening, while suppressing an increase in weight, Good vibration absorption characteristics and heat dissipation characteristics can be obtained.

Brief Description of Drawings

FIG. 1 is an external perspective view of a film-clad battery applicable to the present invention.

FIG. 2 is an exploded perspective view of an example of a cell case of the present invention that houses a film-covered battery. FIG. 3 is a cross-sectional view of the film-cased battery and the cell case that houses the film-covered battery. It is.

FIG. 4 is a perspective view of a cell case containing a film-clad battery.

FIG. 5 is a perspective view showing another example of the shape of the holding material.

FIG. 6 is a perspective view of a film-clad battery for showing an example of arrangement of holding materials.

FIG. 7A is a cross-sectional view showing an example of a cross-sectional shape of a holding material formed by a two-color molding method and composed of a corrugation and a concave portion.

FIG. 7B is a cross-sectional view showing an example of a cross-sectional shape of a holding material that is formed by a two-color molding method and that includes convex portions facing each other.

BEST MODE FOR CARRYING OUT THE INVENTION

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an external perspective view of the film-clad battery of this embodiment.

[0023] The film-clad battery 1 of the present embodiment includes a power generation element 2 having a positive electrode side active electrode, a negative electrode side active electrode, and an electrolyte, a metal film such as aluminum, and a heat-fusible resin film. And a laminate film 7 formed together. The film-clad battery 1 has a structure in which the power generation element 2 is sealed with two laminated films 7. That is, in the film-clad battery 1 of the present embodiment, among the heat-sealing portions 7a that are the four sides of the laminate film 7, first, three sides are heat-sealed to form a bag shape. The internal air is exhausted from the remaining open side by vacuuming. Finally, the power generating element 2 is hermetically sealed by the two laminate films 7 by heat-sealing the remaining one-side heat-sealing portion 7a.

[0024] The power generating element 2 of the film-clad battery 1 may be a laminated type composed of a positive electrode side active electrode and a negative electrode side active electrode laminated via a separator. Alternatively, in the power generating element 2, the belt-like positive electrode side active electrode and the negative electrode side active electrode are stacked via a separator, wound, and then compressed into a flat shape, whereby the positive electrode side active electrode and the negative electrode side active electrode are A wound type having a structure in which layers are alternately stacked may be used.

[0025] Further, as the power generation element 2, any power generation element used in a normal battery can be applied as long as it includes a positive electrode, a negative electrode, and an electrolyte. A power generation element in a general lithium ion secondary battery is composed of a positive electrode plate coated with a positive electrode active material such as lithium manganese oxide and lithium cobaltate on both sides of an aluminum foil and the like, and doped with lithium. It is formed by facing a negative electrode plate, such as a copper foil, coated on both sides, such as a copper foil, through a separator, and impregnating it with an electrolyte containing a lithium salt. Examples of the power generation element 2 include power generation elements of other types of chemical batteries such as a nickel metal hydride battery, a nickel cadmium battery, a lithium metal primary battery or a secondary battery, and a lithium polymer battery. Furthermore, the present invention is also applicable to an electric device in which an electric device element that accumulates electric energy such as a capacitor such as an electric double layer capacitor or an electrolytic capacitor is sealed with an exterior film.

[0026] The power generation element 2 has a plurality of positive electrode side active electrodes and a plurality of negative electrode side active electrodes, and these are alternately laminated so that the outermost side is the negative electrode side active electrode (see FIG. 3). ). Separators are disposed between the positive electrode side active electrode and the negative electrode side active electrode and on the outer side of the outermost negative electrode side active electrode, respectively. A tab 2a is provided so as to protrude from one side of the positive electrode side active electrode and the negative electrode side active electrode. The positive electrode side active electrode tab 2a and the negative electrode side active electrode tab 2a are provided at different positions so that the positive electrode side active electrode tabs 2a and the negative electrode side active electrode tabs 2a overlap each other. .

[0027] The tabs 2a of the positive electrode side active electrode and the tabs 2a of the negative electrode side active electrode are collectively ultrasonically welded to form the positive electrode current collector 3a and the negative electrode current collector 4a, respectively. A positive electrode terminal 3 is connected to the positive current collector 3a, and a negative electrode terminal 4 is connected to the negative current collector 4a.

[0028] From the heat-sealed portion 7a in the short direction of the film-coated battery 1, the positive electrode terminal 3 connected to the positive electrode side active electrode and the negative electrode terminal 4 connected to the negative electrode side active electrode are opposed to each other. It is extended. Aluminum is often used as the positive electrode terminal 3, and copper or nickel is often used as the negative electrode terminal 4 due to its electrical characteristics. Hereinafter, the positive electrode terminal 3 and the negative electrode terminal 4 may be collectively referred to as electrodes.

[0029] A part of the heat-sealed portion 7a in the longitudinal direction of the film-clad battery 1 has a lower heat-sealing strength than the other portions so that the fusion is peeled off at a lower pressure than the other portions. The gas discharge section 8 is provided.

[0030] During use of the battery, if a voltage outside the standard range is applied to the battery, the electrolyte solution Gas may be generated by electrolysis of the solvent, and the internal pressure of the battery may increase. In addition, even if the battery is used at a high temperature outside the specified range, gas may be generated due to decomposition of the electrolyte salt. Basically, it is ideal to use a battery within the specified range so as not to generate gas, but the battery control circuit may fail for some reason and an abnormal voltage is applied, or for some reason. If the surroundings become extremely hot, a large amount of gas may be generated in some cases.

[0031] The generation of gas inside the battery causes an increase in the internal pressure of the battery. In order to prevent the internal pressure from rising excessively and the battery from exploding, many batteries using metal cans as exterior materials have a pressure relief valve that allows gas to escape outside the battery when the internal pressure of the battery rises. . However, it is structurally difficult to provide a pressure safety valve in a film-clad battery that uses a film as a packaging material. If the internal pressure of a film-clad battery increases too much, the film expands, eventually the exterior material ruptures, and the force at which the gas blows out. It is not possible to specify where the rupture occurs, so depending on the location where the rupture occurred The surrounding equipment may be adversely affected.

[0032] In view of this, in the film-clad battery 1, the gas discharge part 8 as described above is provided in the heat-sealing part 7a in order to eliminate such problems caused by the generation of gas inside the battery.

FIG. 2 shows an exploded perspective view of a cell case that houses a film-clad battery. Fig. 3 shows a cross-sectional view of the film-clad battery and a cell case containing the film-clad battery.

[0034] A cell case 10 surrounding the periphery of the film-clad battery 1 has a first frame 11 and a second frame 12, and the film-clad battery 1 is sandwiched between them by a clamping surface. It has become. Each of the frames 11 and 12 has a frame shape, and an opening 13 is formed at a location corresponding to the power generation element 2 of the film-clad battery 1.

[0035] The first frame 11 is a rectangular frame comprising two long sides 11a facing each other, and two short sides l ib formed substantially orthogonal to the long sides 11a and facing each other. is there. Each long side 11a is connected by an exhaust gas passage 11c for guiding the gas exhausted from the gas exhaust part 8 of the film exterior battery 1 to the outside. In the present embodiment, since the gas discharge part 8 of the film-clad battery 1 is formed in the approximate center of the heat-sealing part 7a, the exhaust gas passage 11c is also adjusted accordingly. It is formed in the approximate center of the long side 11a, and the opening 13 is divided into two. Further, a notch 11 d for forming a gas discharge port 16 is formed at one end of the long side 11a and at one end of the exhaust gas passage 11c.

[0036] Each short side 1 lb of the first frame 11 is housed in the cell case 10 !, and there are notches l ie for extending the electrodes of the film external battery 1 in the state of being extended to the outside. Is formed. Each 1 lb of the short side is formed with a concave storage portion 15 for holding a holding member 30 to be described later. The storage portion 15 corresponds to the electrode-corresponding portion 15a corresponding to the portion where the electrode of the heat-sealing portion 7a in the short direction of the film-cased battery 1 extends and the corner portions of the film-cased battery 1 on both sides thereof. And a corner corresponding portion 15b. In the present embodiment, the corners of the film-clad battery 1 mean the four corners of the film-clad battery 1. That is, the corner is an area where the laminate film 7 is particularly easily damaged (area surrounded by A in FIGS. 1 and 2). Each corner is prone to breakage due to the presence of both end portions 3a 'and 4a' in the width direction (B direction in Fig. 2) of current collecting portions 3a and 4a.

The basic structure of the second frame 12 is the same as that of the first frame 11. The second frame 12 is also a rectangular frame composed of two long sides 12a and two short sides 12b, and a notch 12d for forming a gas outlet 16 is formed on one of the long sides 12a. Each short side 12b is formed with a storage portion 15 including an electrode corresponding portion 15a and a corner corresponding portion 15b. Unlike the first frame 11, the second frame 12 is not provided with the exhaust gas passage 11c. The second frame 12 is provided with an electrode holding portion 12e that fits into the notch l ie of the first frame 11. The electrode holding portion 12e is formed to have a thickness so that an opening through which the electrode can be extended is fitted in the notch lie.

[0038] The retaining material 30 is preferably a urethane-based or butyl-based foamable resin. In the case where the holding material 30 is cured after being filled into the storage portion 15, it is more preferable to use an ultraviolet curable type resin that is not a thermosetting type resin. This is because in the case of an ultraviolet curable resin, the film is cured by irradiating with ultraviolet rays, so that the film-covered battery 1 is not affected by heat during curing.

[0039] Next, a procedure for storing the film-cased battery 1 in the cell case 10 when using the pre-cured holding material 30 will be described. First, the holding member 30 formed in accordance with the shape of the storage unit 15 is fitted into the storage unit 15 in a total of four locations including the first frame body 11 and the second frame body 12. The holding material 30 may be fixed to the storage portion 15 with a double-sided tape or an adhesive.

[0041] Next, the film-covered battery 1 is sandwiched between the long side 11a of the first frame 11 and the long side 12a of the second frame 12 with the heat-sealed portion 7a in the longitudinal direction thereof being short, The heat-sealed portion 7a in the hand direction is sandwiched between the short side l ib and the short side 12b. That is, heat fusion is performed on the clamping surface between the first frame body 11 and the second frame body 12 (the surface that faces when the first frame body 11 and the second frame body 12 are arranged to face each other). Hold part 7a. At this time, the gas discharge part 8 should be positioned at the gas discharge port 16.

[0042] As shown in Fig. 3, the holding material 30 stored in the storage unit 15 is in close contact with the surfaces of the heat-sealing part 7a and the close-contact part 7b, and holds the film-clad battery 1 in the cell case 10. To do. The holding material 30 is appropriately compressed at the heat-sealing portion 7a and the close-contact portion 7b. The heat fusion part 7a compressing the holding material 30 is in the short direction in which the electrode of the film-clad battery 1 extends out of the four sides. Further, the close contact portion 7b refers to a region where the laminate film 7 is in close contact with the current collecting portions 3a and 4a by evacuation although not heat-sealed.

[0043] The holding material 30 covers the corners of the film-clad battery 1 in this state! Note that the holding member 30 does not hold the main body portion of the power generation element 2 facing the opening 13. That is, the holding member 30 covers the corners where cracks or the like are likely to occur, but does not cover the main body portion of the power generating element 2. That is, the film-clad battery 1 is sandwiched near the electrodes by the holding material 30, while the main body of the power generation element 2 is opened to the atmosphere. The holding member 30 that holds the film-equipped battery 1 in this way prevents external shocks from being transmitted to the film-cased battery 1 and absorbs vibration. Further, the holding material 30 fills a gap formed between the electrode and the opening from which the electrode extends. If the clearance force of the cooling air supplied to the opening 13 also leaks, the cooling efficiency of the power generating element 2 decreases. However, since the holding material 30 fills the gap, it is possible to prevent the cooling efficiency of the power generating element 2 from being lowered due to cooling air leakage.

FIG. 4 shows a perspective view of the film-cased battery 1 housed and held in the cell case 10. Each electrode 3 and 4 is shown in a folded state. As shown in FIG. 4, the holding material 30 does not exist on the surface of the main body portion of the power generation element 2. Therefore, the holding material 30 is used as a heat storage material. The heat generated by the power generation element 2 without functioning can be efficiently radiated to the outside. Further, since the main body portion of the power generation element 2 is opened to the atmosphere through the opening 13, the cooling air can be directly applied to the power generation element 2 to be cooled, so that good cooling characteristics can be obtained. Further, since the holding material 30 does not cover the main body portion of the power generating element 2, the weight is reduced accordingly. Further, since the holding material 30 is provided only in the portion corresponding to the electrode as described above, and is not provided in the portion of the gas discharge port 16, the gas discharge portion 8 force of the gas discharged by the holding material 30 is also reduced. Exhaust is not hindered.

As shown in FIG. 5, the shape of the holding member 30 is such that both end portions of the electrode, that is, particularly the broken portion, only the corner portion of the battery is held, and the central portion of the electrode is not held. It's okay. In this case, further light weight can be achieved.

[0046] In the above-described example, the holding material 30 is a force disposed in the heat-sealed portion 7a in the short direction from which the electrodes extend. The present invention is not limited to this and is shown in FIG. As described above, the holding member 30 may be arranged at the position 7c in the longitudinal direction heat-sealing portion 7a that does not hinder the exhaust of gas from the gas discharge portion 8. That is, the holding member 30 may be provided in a region other than the gas discharge port 16 of the cell case 10. In this case, the gas can be discharged in a desired direction, and the number of places that are held by the holding material 30 is increased, so that the number of places that absorb vibration is increased, so that the vibration absorption characteristics are further improved.

[0047] Further, in the above-described example, the holding material 30 is formed separately from the cell case 10, and the film outer battery 1 is fitted into the storage unit 15 before being stored in the cell case 10, Although an example of filling is described, the present invention is not limited to this. In other words, when the cell case 10 is molded, the holding material 30 may be molded at the same time, which may be molded using a so-called two-color molding method.

[0048] In the case of the method of filling the holding material, a test shot for obtaining an optimum filling amount and filling state is required. In addition to the step of molding the cell case, a process of filling the holding material is required. Furthermore, in the case of the filling method, the shape of the holding material depends on the shape of the region to be filled, and cannot be a free shape. Also, the method of separately forming the holding material requires a step of fitting the holding material into the storage portion.

[0049] In contrast, a manufacturing method for forming a holding material simultaneously with a cell case by a two-color molding method. In this case, it is possible to increase the degree of freedom of the shape of the holding material as well as simplify the molding process.

FIG. 7A and FIG. 7B show examples of the cross-sectional shape of the holding material formed by the two-color molding method.

[0051] When it is desired to grip the electrode with a strong local force, for example, the holding members 31 and 32 shown in FIG. 7A may be used. The holding member 31 has a corrugated contact portion 31a that contacts the electrode portion, and the holding member 32 has a concave portion 32a that is shaped to receive the corrugated contact portion 31a. It is possible to increase the gripping force by forming such shapes that mesh with each other.

[0052] Also, when it is desired to reliably prevent the cooling air for cooling the power generating element 2 from escaping from the gap between the electrode and the cell case 10, for example, a holding material 33 having a shape as shown in FIG. 7B is formed. You can do it. By using the holding material 33 in which the convex portions 33a face each other, the degree of adhesion of the holding material 33 to the electrode portion is increased, so that the cooling air does not escape from the gap between the electrode and the cell case 10. Can do.

[0053] In addition, it can be expected to suppress an increase in cost by making the upper and lower shapes the same as the holding material 33.

[0054] When the cell case 10 and the holding materials 31 to 33 are formed by the two-color molding method, the material of the cell case 10 is, for example, PA (polyamide) 6 or PA66, and the holding material is PA11. Also good.

[0055] In the above-described example, the first frame body 11 and the second frame body 12 sandwich the heat-sealing portion 7a of the film-clad battery 1 at the clamping surface, and the holding material 30 is the film-clad battery. The force shown in the configuration of holding 1 as an example The film-clad battery 1 may be configured to be held in the cell case 10 only by the holding material 30.

[0056] Further, in the above-described example, the holding member 30 does not form a recess like the force storage unit 15 described in the example stored in the storage unit 15. The holding material 30 is provided on the holding surface for holding the film-clad battery 1 with the frame 12.

[0057] As described above, in the cell case 10 of the present embodiment, the film-clad battery 1 is arranged so that the holding material 30 covers the corners of the film-clad battery 1 but does not cover the main body of the power generation element 2. Pinch It has a configuration to have. By this holding method, it is possible to hold the film-covered battery 1 while absorbing the vibrations well, as well as enabling the cooling of the main part of the power generating element 2, and further reducing the weight. . In addition, when the holding material 30 is provided so as to fill a gap formed between the electrode and the opening through which the electrode extends, the cooling air can be prevented from leaking from the gap, and the power generating element 2 It is possible to prevent the cooling efficiency from being lowered.

Claims

The scope of the claims

[1] In a case for a film-clad electrical device that houses a film-clad electrical device having a chargeable / dischargeable electrical device element and a packaging film surrounding and surrounding the electrical device element,

A frame member having an opening formed in a region corresponding to the electric device element; and a holding material for holding the film-covered electric device housed in a housing portion formed in the frame member. Case for film-covered electrical devices.

[2] In a case for a film-clad electrical device containing a chargeable / dischargeable electrical device element and a film-clad electrical device having an exterior film surrounding and surrounding the electrical device element,

A frame member that sandwiches the film-covered electrical device on a sandwiching surface and has an opening formed in a region corresponding to the electrical device element;

A film-covered electrical device case, comprising: a holding member for holding the film-covered electrical device, provided on the holding surface of the frame member.

[3] The film-covered electrical device case according to claim 1 or 2, wherein the holding material holds at least corners of the rectangular film-covered electrical device.

[4] The holding member according to claim 3, wherein the holding material is disposed so as to seal a gap between an opening that extends the electrode that extends the film-clad electrical device force to the outside and the electrode. Film exterior case for electrical devices.

[5] The film-covered electrical device case according to claim 1 or 2, wherein the holding material is disposed in a region other than a gas discharge port for exhausting a gas generated inside the film-wrapped electrical device.

[6] The case for a film-clad electrical device according to claim 1 or 2, wherein the holding material is a foamable resin.

[7] The film-covered electrical device case according to claim 1 or 2, wherein the holding material is an ultraviolet curable resin.

[8] A film-clad electrical device that houses a film-clad electrical device having a chargeable / dischargeable electrical device element and a packaging film that surrounds the electrical device element In the case manufacturing method,

When forming a frame member having an opening that is a region corresponding to the electrical device element and a storage portion that stores the film-clad electrical device, a holding material that holds the film-clad electrical device is stored in the storage device. A method for producing a case for a film-wrapped electric device, comprising a step of forming the film in a part.

In a method for producing a case for a film-clad electrical device that houses a film-clad electrical device having a chargeable / dischargeable electrical device element and a packaging film that surrounds the electrical device element,

When the film-clad electrical device is clamped by a clamping surface and a frame member having an opening in a region corresponding to the electrical device element is formed, a holding material that holds the film-clad electrical device is used as the frame. A method for producing a case for a film-covered electrical device, comprising a step of forming on the holding surface of a member.