JP2011171014A - Novel battery, and usage thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a battery in which a positive electrode and a negative electrode can be easily separated and disassembling work can be easily carried out. <P>SOLUTION: The battery is provided with a case, a positive electrode having a positive electrode active material, and a negative electrode having a negative electrode active material. The case is constituted of an upper case body and a lower case body, and the upper case body and the lower case body have fixing parts for fixing the positive electrode or the negative electrode respectively, and the fixing part of the upper case body and the fixing part of the lower case body are provided with either of the positive electrode or the negative electrode fixed, and the upper case body and the lower case body are structured in a free separation. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a novel battery and use thereof, and in particular, a battery that can be easily disassembled and does not require a work for opening a battery container or the like when recovering valuable materials after use. The present invention relates to a casing separation system having a casing, an electric device including a casing gripping portion, and a method for separating the positive electrode and the negative electrode of the battery.

  In recent years, there has been a demand for higher performance of batteries used as power sources in notebook personal computers, mobile phones, automobiles, airplanes, and the like, and research and development have been promoted with regard to higher capacity, longer life, and smaller and lighter weight. For example, high energy density secondary batteries such as lithium ion secondary batteries have attracted attention. These secondary batteries with high energy density are preferably decomposed after use to recover valuable materials and reuse them from the viewpoint of environmental protection.

  For example, Patent Document 1 discloses that a used lithium battery is previously opened in a battery container and heated to recover volatiles in the battery, and then another value is obtained by acid elution or filtration. Disclosed is a method for treating a used lithium battery that recovers the product.

JP 2005-26088 A (published January 27, 2005)

  However, in the method for treating a used lithium battery disclosed in Patent Document 1, since the internal energy is high in the charged state, it is necessary to discharge in advance in order to disassemble it. Further, in order to remove or collect volatiles inside the battery, it was necessary to open a hole in the battery container or the like in advance (see paragraphs [0013] and [0036] of Patent Document 1). Therefore, there is a problem that it is difficult to process a used lithium battery.

  The present invention has been made by the inventors in the light of the above-mentioned problems, and its purpose is to facilitate the disassembling work and, for example, to remove or recover volatiles. To provide a battery that does not need to be previously opened in a battery container or the like when performing, a housing separation system having the battery, an electric device including a housing gripping part, and a method for separating the positive electrode and the negative electrode of the battery It is in.

In order to solve the above problems, a battery according to the present invention is a battery comprising a housing, a positive electrode having a positive electrode active material, and a negative electrode having a negative electrode active material, wherein the housing includes an upper housing. A body and a lower housing, wherein the upper housing and the lower housing each have a fixing portion for fixing a positive electrode or a negative electrode, and the fixing portion of the upper housing and the lower housing One of a positive electrode and a negative electrode is fixed to each of the fixing portions, and the upper housing and the lower housing are configured to be separable.
According to the above configuration, since the positive electrode and the negative electrode are respectively fixed to different separable cases, if the upper case and the lower case are separated, the positive and negative electrodes face each other accordingly. Can be separated so as not to. Therefore, the positive electrode and the negative electrode can be easily separated, and the battery can be easily disassembled. In addition, since the upper housing and the lower housing are easily separated and the inside of the battery is opened, volatiles can be removed or collected by heating or the like without opening the battery container or the like in advance.

  Further, in the battery of the present invention, a part or all of the inner peripheral diameter of the upper casing is larger than the outer peripheral diameter of the lower casing, and the upper casing is part or all of the lower casing. Is preferably coated.

  With the above configuration, the battery of the present invention is usually in a state where the inside of the battery is isolated from the outside by covering part or all of the outer surface of the lower housing with the inner surface of the upper housing, The normal function of the battery can be demonstrated.

  In the battery of the present invention, part or all of the inner peripheral diameter of the lower casing is larger than the outer peripheral diameter of the upper casing, and the lower casing is part or all of the upper casing. Is preferably coated.

  With the above configuration, the battery of the present invention is usually in a state where the inside of the battery is isolated from the outside by covering part or all of the outer surface of the upper housing with the inner surface of the lower housing, The normal function of the battery can be demonstrated. On the other hand, when processing after use, the upper housing and the lower housing can be easily separated by removing the lower housing from the upper housing.

  In the battery of the present invention, it is preferable that the upper casing and / or the lower casing include a sealing member for sealing a gap between the upper casing and the lower casing.

  Thereby, since the battery of this invention can seal and couple | bond an upper housing | casing and a lower housing | casing, it can interrupt | block the inside of a battery from the exterior more reliably during use, and can prevent a liquid leak.

  In the battery of the present invention, it is preferable that the fixed portion is an insulating plate.

  Thereby, since the battery of this invention can use the insulating plate originally provided in the battery as a fixing | fixed part, it is not necessary to provide a fixing | fixed part separately and can avoid the increase in the number of members.

  In the battery of the present invention, the battery is preferably a lithium ion secondary battery.

  Thereby, the processing after used becomes easy about the lithium ion secondary battery which attracts attention as a secondary battery of high energy density in recent years.

  In order to solve the above-described problems, the present invention provides a housing separation system including the battery and a housing gripper that can grip the upper housing and / or the lower housing of the battery. To do.

  In the above system, the upper housing and / or the lower housing can be gripped by the housing gripping portion, and therefore the upper housing and the lower housing can be separated by a simple operation of moving the housing gripping portion. Can do.

  In addition, the present invention provides an electric device having a housing gripping part capable of gripping the upper housing and / or the lower housing of the battery according to the present invention.

  As a result, the electrical device separates the upper housing and the lower housing by a simple operation of moving the housing gripping portion after gripping the upper housing and / or the lower housing with the housing gripping portion. Therefore, the upper housing and the lower housing can be easily separated by setting the battery according to the present invention in the electric device.

  The present invention is also a method for separating the positive electrode and the negative electrode of the battery so that the positive electrode and the negative electrode of the battery are not opposed to each other by separating the upper housing and the lower housing of the battery. To provide a method of separation.

  According to the above configuration, since the positive electrode or the negative electrode is fixed to the upper housing and the lower housing of the battery, the positive and negative electrodes of the battery are separated by separating the upper housing and the lower housing. Can be separated so as not to face each other. As a result, the positive electrode and the negative electrode can be easily separated, and the battery can be easily disassembled. In addition, since the upper housing and the lower housing are easily separated and the inside of the battery is in an open state, volatiles can be removed or collected by heating or the like without opening the battery container or the like in advance. it can.

  In the battery according to the present invention, as described above, the casing includes the upper casing and the lower casing, and the upper casing and the lower casing each have a fixing portion for fixing the positive electrode or the negative electrode. One of a positive electrode and a negative electrode is fixed to the fixing portion of the upper housing and the fixing portion of the lower housing, respectively, and the upper housing and the lower housing are configured to be separable Has been.

  In addition, as described above, the method for separating the positive electrode and the negative electrode of the battery according to the present invention separates the upper housing and the lower housing of the battery so that the positive electrode and the negative electrode of the battery face each other. It is the structure which isolate | separates so that it may not.

  Therefore, the positive electrode and the negative electrode can be easily separated, and the battery can be easily disassembled. In addition, since the upper housing and the lower housing are easily separated and the inside of the battery is opened, volatiles can be removed or collected by heating or the like without opening the battery container or the like in advance.

It is sectional drawing which shows a basic structure about an example of the battery which concerns on this invention. It is the schematic which shows the state which the upper housing | casing and the lower housing | casing couple | bonded about an example of the battery which concerns on this invention. It is the schematic which shows the state which the upper housing | casing and the lower housing | casing isolate | separated about an example of the battery which concerns on this invention.

  Hereinafter, the present invention will be described in detail with reference to the drawings.

(1. Battery)
A battery according to the present invention includes a housing, a positive electrode having a positive electrode active material, and a negative electrode having a negative electrode active material. The housing includes an upper housing and a lower housing, and the upper housing. The body and the lower housing each have a fixing portion for fixing the positive electrode or the negative electrode, and one of the positive electrode and the negative electrode is fixed to the fixing portion of the upper housing and the fixing portion of the lower housing, respectively. The upper housing and the lower housing are configured to be separable.

  In this specification, “battery” means a primary battery or a secondary battery. The type of the “battery” is not particularly limited as long as it has a configuration including the casing, a positive electrode having a positive electrode active material, and a negative electrode having a negative electrode active material. For example, a manganese dry battery, an alkaline dry battery, a lithium primary battery, a silver oxide battery, a nickel-cadmium battery, a nickel metal hydride battery, a lithium secondary battery, a lithium ion secondary battery, an air secondary battery, or the like can be used. Among these, a lithium ion secondary battery is more preferable as the battery.

  In this specification, the “housing” refers to a portion composed of a so-called battery can and a battery lid that form the side and bottom of the battery, and the inside of the housing includes the positive electrode, the negative electrode, the separator, Electrolyte etc. are stored. In the battery according to the present invention, the casing includes an upper casing and a lower casing. The lower housing has a part of the battery can, and the upper housing has a part of the battery can and a battery lid. The material constituting the casing is not particularly limited, and an appropriate material may be selected according to the type of battery. For example, iron plated with nickel, SUS (stainless steel), aluminum, or the like is used for a lithium ion secondary battery, and zinc is used for a manganese dry battery. The shape of the housing is not particularly limited, but may be a coin shape, a cylindrical shape, a square shape, or a laminate shape.

  For the positive electrode active material and the negative electrode active material, conventionally known appropriate materials may be selected according to the type of battery. Examples of the positive electrode active material include lithium-containing oxides (eg, lithium cobaltate, lithium nickelate, lithium manganese spinel) in lithium ion secondary batteries, manganese dioxide, lithium primary batteries, and lithium secondary batteries in manganese dry batteries. Manganese dioxide, graphite fluoride, thionyl chloride, etc., silver oxide, silver oxide, nickel-cadmium battery, nickel hydride battery, nickel hydroxide can be used. Examples of the negative electrode active material include graphite and chalcogen compounds in lithium ion secondary batteries, zinc in manganese dry batteries and silver oxide batteries, lithium primary batteries, lithium metal in lithium secondary batteries, cadmium hydroxide and nickel hydride in nickel-cadmium batteries. Examples of the battery include a hydrogen storage alloy (for example, an alloy made of a rare earth metal such as lanthanum and a transition metal such as nickel).

  In the battery according to the present invention, when the positive electrode is fixed to the fixing portion of the upper housing, the negative electrode is fixed to the fixing portion of the lower housing, and when the positive electrode is fixed to the fixing portion of the lower housing, the negative electrode Is fixed to the fixing portion of the upper casing. Therefore, by separating the upper housing and the lower housing, the positive electrode and the negative electrode can be separated so as not to face each other.

  As a method of preventing a short circuit between the positive electrode and the negative electrode, for example, an insulating layer such as alumina or titania is provided on the surface of the positive electrode or the negative electrode, or on the surface of the positive electrode and the negative electrode, and / or a separator is provided between the positive electrode and the negative electrode. Although insertion can be mentioned, it is more preferable to use a separator from the viewpoint of surely preventing short circuit. When using a separator, a conventionally well-known thing can be used.

  Examples thereof include fluorinated resins, olefinic resins such as polyethylene and polypropylene, non-woven fabrics such as nylon, and woven fabrics. The thickness of the separator is preferably as thin as possible as long as the mechanical strength is maintained from the viewpoint that the volume energy density of the battery is increased and the internal resistance is reduced, and is preferably about 10 to 200 μm. When the upper housing and the lower housing are not separated, the separator is disposed between the facing surfaces of the positive electrode and the negative electrode in the battery. In the case of a cylindrical battery, the positive electrode and the negative electrode may have an inside-out structure or a spiral structure.

  Hereinafter, the present invention will be specifically described with reference to FIGS. 1 to 3 by taking a cylindrical lithium ion secondary battery widely used as a secondary battery having a high energy density as an example. However, the present invention is not limited to a cylindrical lithium ion secondary battery, and is applicable to any battery including a housing, a positive electrode having a positive electrode active material, and a negative electrode having a negative electrode active material. It is obvious to those skilled in the art that this is possible.

FIG. 1 is a cross-sectional view showing a basic structure of a cylindrical lithium ion secondary battery 100 (hereinafter sometimes abbreviated as battery 100) to which the present invention is applicable. As shown in FIG. 1, a lithium ion secondary battery 100, which is an example of a battery according to the present invention, basically includes a strip-like positive electrode 2 and a negative electrode 3 in a hollow cylindrical battery can 1, and a separator 4 A winding electrode body 6 having a so-called spiral structure, which is spirally formed around the center pin 5, is inserted, and the opening end of the battery can 1 is covered by the battery lid 7 and its peripheral members. Have.

  The battery can 1 is made of, for example, iron (Fe) plated with nickel (Ni), and has one end closed and the other end open. Inside the battery can 1, an upper insulating plate (fixed portion) 8 and a lower insulating plate (fixed portion) 9 are arranged perpendicular to the winding peripheral surface so as to sandwich the wound electrode body 6.

  The battery lid 7 is made of the same material as the battery can 1, for example. At the opening end of the battery can 1, there is a battery lid 7, a safety valve mechanism comprising a metal plate (disk plate) 10 and a metal plate support 17 provided inside the battery lid 7, and a PTC element (Positive Temperature Coefficient). Heat resistance element 11) is attached by caulking through a gasket 12, and the inside of the battery can 1 is sealed. Due to the caulking operation, irregularities 13 are formed on the outer periphery of the battery can 1 on the battery lid 7 side. As a material of the metal plate support 17, for example, plastic can be used.

  The safety valve mechanism is electrically connected to the battery lid 7 via the PTC element 11, and when the internal pressure of the battery exceeds a certain level due to an internal short circuit or overheating from the outside, the recess of the metal plate 10 and the metal plate 16 is jumped to the battery lid 7 side and the positive electrode lead 14 is cut, thereby being electrically insulated.

  When the temperature rises, the PTC element 11 limits the current by increasing the resistance value and prevents abnormal heat generation due to a large current.

  The gasket 12 is made of, for example, an insulating material, and asphalt is applied to the surface.

  The positive electrode 2 includes, for example, a positive electrode current collector having a pair of opposing surfaces, and a positive electrode active material layer provided on both surfaces or one surface of the positive electrode current collector.

  The negative electrode 3 includes, for example, a negative electrode current collector having a pair of opposed surfaces, and a negative electrode active material layer provided on both surfaces or one surface of the negative electrode current collector.

  The separator 4 has a function of preventing contact between both electrodes, having insulation, holding a non-aqueous electrolyte, and allowing lithium ions to pass therethrough, resistance to the non-aqueous electrolyte used, What is necessary is just to have the tolerance with respect to an electrochemical reaction.

In the present invention, as the non-aqueous solvent of the non-aqueous electrolyte, silylated carbonate, dimethyl carbonate, ethyl methyl carbonate, 2, 2, 3, 3-tetrafluoroethylpropyl difluoromethyl ether, 2, 2, 3, 3 , 3-pentafluoropropyl methyl ether, PC, or EC can be used alone, or a mixed solvent with two or more kinds can be used, but is not limited thereto. For example, an ionic liquid such as imidazolium-sulfonimide can be used.

  The content of silylated carbonate in the mixed solvent, that is, the non-aqueous solvent is preferably 5% by volume or more, more preferably 10% by volume or more. When a relatively large amount of silylated carbonate having a high boiling point is contained as a component of the nonaqueous electrolytic solution as described above, it is preferable because performance deterioration at high temperatures is small. Silylated carbonate has a flash point higher than that of non-cyclic carbonates such as DMC, and therefore, by containing a relatively large amount of silylated carbonate as described above, safety is preferable.

As the electrolyte salt, known ones can be used. For example, LiAsF ₆ , LiPF ₆ , LiBF ₄ , LiClO ₄ , LiCF ₃ SO ₃ , LiN (SO ₂ CF ₃ ) ₂ , LiN (SO ₂ C ₂ F ₅ ) ₂ or LiC (SO ₂ CF ₃ ) ₃ or the like. One of these may be used alone, or two or more may be mixed and used.

  Hereinafter, the difference of the lithium ion secondary battery 100 according to the present invention from the conventional lithium ion secondary battery will be specifically described. What should be noted here is that, as described above, the lithium ion secondary battery 100 is merely an example of the battery of the present invention, and the present invention includes a housing, a positive electrode having a positive electrode active material, and a negative electrode active material. It can be applied to any battery including a negative electrode having a substance.

  As shown in FIG. 1, the casing of the lithium ion secondary battery 100 according to the present invention is configured to be separable into an upper casing 18 and a lower casing 19. The lower housing 19 has a part of the battery can 1, and the upper housing 18 has a part of the battery can 1 and the battery lid 7. The positive electrode 2 is fixed to the upper insulating plate (fixed portion) 8 provided in the upper housing 18, and the negative electrode 3 is fixed to the lower insulating plate (fixed portion) 9 provided in the lower housing 19. Yes. Fixing of the positive electrode 2 to the upper insulating plate (fixing portion) 8 and fixing of the negative electrode 3 to the lower insulating plate 9 can be performed by means such as an adhesive or an adhesive.

  Here, in FIG. 1, the positive electrode 2 is fixed to the upper insulating plate (fixed portion) 8 and the negative electrode 3 is fixed to the lower insulating plate (fixed portion) 9, but the negative electrode 3 is fixed to the upper insulating plate (fixed portion) 8. May be fixed, and the positive electrode 2 may be fixed to the lower insulating plate (fixing portion) 9. Further, the fixing portion that fixes the positive electrode 2 and the negative electrode 3 is not limited to the upper insulating plate 8 or the lower insulating plate 9. For example, you may fix to the other site | part which can move integrally with the upper housing | casing 18 or the lower housing | casing 19. FIG. However, by using the insulating plate originally provided in the battery as a fixing portion, it is not necessary to provide a fixing portion separately, and an increase in the number of members can be avoided.

  An enlarged diameter portion 20 is formed in the opening of the upper housing 18 on the lower housing 19 side. By inserting the opening of the lower housing 19 into the enlarged diameter portion 20, It can be combined with the lower housing 19 in alignment.

  Here, in the structure shown in FIG. 1, a part of the inner peripheral diameter of the upper casing 18 is larger than the outer peripheral diameter of the lower casing 19, but the entire inner diameter of the upper casing 18 is the lower casing. It may be larger than the outer diameter of 19. In this case, for example, the upper housing 18 may be covered with the lower housing 19 and the upper housing 18 may be stopped by a stopper formed on the outer periphery of the lower housing 19. In the structure shown in FIG. 1, the upper housing 18 covers only a part of the lower housing 19, but the upper housing 18 may cover the entire lower housing 19. Further, although not shown, a configuration in which part or all of the inner peripheral diameter of the lower casing 19 is configured to be larger than the outer peripheral diameter of the upper casing 18, and the lower casing 19 covers part or all of the upper casing 18. It may be.

  The “inner circumferential diameter” refers to the inner diameter of the side surface of the upper housing or the lower housing, and the “outer diameter” refers to the outer diameter of the side surface of the upper housing or the lower housing. Further, “the upper casing covers part or all of the lower casing” means that part or all of the outer surface of the lower casing is covered with the inner surface of the upper casing. Similarly, “the lower casing covers part or all of the upper casing” means that part or all of the outer surface of the upper casing is covered by the inner surface of the lower casing. The “diameter” of the inner diameter or outer diameter refers to the diameter of a circle when the cross section of the upper housing or the lower housing is circular, for example, and when the cross section is rectangular, the long side of the rectangle or Say the short side.

  In FIG. 1, the lower housing 19 includes a seal ring (sealing member) 21 for sealing a gap between the upper housing 18 and the lower housing 19. The material of the seal ring 21 is not particularly limited, and an appropriate material may be selected as a conventionally known sealing member. For example, PTFE (Teflon (registered trademark)), fluororubber, silicone rubber, and urethane can be used. Thereby, since the upper housing | casing 18 and the lower housing | casing 19 can be sealed and couple | bonded, the inside of a battery can be more reliably interrupted | blocked from the outside during use, and a liquid leak can be prevented. On the other hand, even when the seal ring (sealing member) 21 is provided, the upper housing 18 and the upper housing 19 can be separated by applying a tensile force to one of them. The sealing member is not limited to the seal ring. In addition to the seal ring, for example, a shape memory alloy can be used.

  Here, the sealing member 21 may be provided in the upper casing 18, or may be provided in both the upper casing 18 and the lower casing 19. In FIG. 1, the sealing member 21 is provided with two upper and lower sealing members 21 in FIG. 1, but the number of sealing members 21 is not necessarily limited, and the number can be appropriately increased or decreased as necessary. it can.

  In some cases, the sealing member 21 may not be provided. In the case of the upper casing 18 and the lower casing 19, when the inner peripheral diameter of one is only slightly different from the outer peripheral diameter of the other, for example, a part or all of the upper casing 18 is In some cases, a part or the whole can be covered without a gap. In such a case, it can be said that the seal ring (sealing member) 21 is not essential.

  In the battery according to the present invention, as described above, the casing is composed of the upper casing and the lower casing and can be separated from each other, and the fixing section of the upper casing and the fixing section of the lower casing can be separated from each other. Since one of the positive electrode and the negative electrode is respectively fixed, the positive electrode and the negative electrode of the battery can be separated from each other by separating the upper housing or the lower housing. Therefore, after the battery is used, the positive electrode and the negative electrode can be easily separated, and the battery can be easily disassembled. In addition, since the upper housing and the lower housing are easily separated and the inside of the battery is in an open state, volatiles can be removed or collected by heating or the like without opening the battery container or the like in advance. it can.

  “Separating the positive electrode and the negative electrode so as not to face each other” means that the surface that the positive electrode and the surface that the negative electrode have cannot be orthographically projected onto the surface that the negative electrode has and the surface that the negative electrode has Is in a state where it cannot be projected onto the surface of the positive electrode. For example, as shown in FIG. 3, it means that the positive electrode and the negative electrode are not opposed to each other.

  The method for separating the upper housing and the lower housing is not particularly limited. Separation may be performed manually, or the upper housing and / or the lower housing may be gripped using a member capable of gripping the upper housing and / or the lower housing, and the upper housing and / or the lower housing Separation can also be performed by applying a tensile force or the like.

  Since the battery according to the present invention can separate the positive electrode and the negative electrode so as not to face each other, the positive electrode and the negative electrode are separated, and then each of the positive electrode material and the negative electrode material is appropriately disposed of. Can do.

  When the battery 100 having a configuration in which the upper casing 18 and the lower casing 19 can be separated is disposed of, the upper casing 18 and the lower casing are first grasped by holding the upper casing 18 or the lower casing 19. By separating 19, the positive electrode 2, the negative electrode and 3 are separated into two products. The means for performing such separation is not particularly limited, and for example, an instrument including a housing gripping portion 30 described later, a special pliers, or the like can be used.

  Thereafter, the positive electrode 2 and the negative electrode 3 are separated, and appropriate disposal of each of the material of the positive electrode 2 and the material of the negative electrode 3 is performed.

  Thus, since the conventional battery cannot easily separate the positive electrode and the negative electrode, it is possible to solve the problem that disposal suitable for each of the positive electrode material and the negative electrode material is difficult. In addition, since the positive electrode and the negative electrode are disposed of separately, the substances contained in the positive electrode or the negative electrode can be sufficiently reused, and the burden on the environment can be reduced.

(2. Case separation system)
The housing separation system according to the present invention includes the battery according to the present invention, and a housing gripper that can grip the upper housing and / or the lower housing of the battery. For example, the battery 100 shown in FIG. 2 and a housing gripper 30 that can grip the upper housing 18 of the battery 100 are included. Thereby, the upper housing 18 and the lower housing 19 can be separated by a simple operation of holding the upper housing 18 of the battery 100 with the housing gripping portion 30 and moving the housing gripping portion 30. As a result, the positive electrode 2 and the negative electrode 3 can be separated so as not to face each other. The housing grip 30 is preferably detachable from the battery 100, but may be fixed.

  Here, as the portion gripped by the housing gripping portion 30 of the battery 100, the unevenness 13 formed in the caulking step of the battery can be used as it is. However, it is not limited to this. For example, in the upper housing 18 or the lower housing 19, a recess or a protrusion that can be gripped by the housing gripping portion 30 by a conventionally known method may be provided at a position other than the unevenness 13. In the configuration shown in FIG. 2, the upper casing 18 of the battery 100 is gripped. However, the lower casing 19 may be gripped, and the upper casing 18 and the lower casing 19 may be configured. The structure which hold | grips both may be sufficient.

  The housing grip 30 may include other members as necessary. For example, you may provide the drawer | drawing-out part 31 as shown in FIG. When the drawer portion 31 is provided, the drawer portion 31 is connected to the housing gripping portion 30, so that the upper housing 18 and the lower housing are pulled by pulling the drawer portion 31 instead of the housing gripping portion 30. 19 can be separated.

  The movement of the housing grip 30 may be performed manually or automatically. For example, when the casing separation system is set in the electric device 40, the upper casing 18 and the lower casing 19 can be quickly separated without opening the lid or the like of the electric device 40. It is preferable to automatically move the body gripping portion 30. Examples of a method for automatically moving the housing gripping portion 30 include a method for enabling the housing gripping portion 30 to be controlled by a conventionally known computer.

  Moreover, the shape of the said housing | casing holding part 30 should just be able to hold | grip the upper housing | casing 18 or the lower housing | casing 19, and is not limited to what is shown in FIG. Further, in FIG. 2, the housing gripping portion 30 grips the upper housing 18 by hooking the end portion on the unevenness 13, but the gripping mode is not limited to this. For example, the housing gripping portion 30 can be gripped by being attracted to the upper housing 18 or the lower housing 19 by a magnetic force or the like.

(3. Electrical equipment)
As shown in FIG. 2, the electric device 40 according to the present invention includes the housing gripping portion 30. Although it does not specifically limit as the electric equipment 40, A portable type electric equipment can be mentioned as a preferable form. For example, a notebook computer, a mobile phone, a portable game machine, an electronic dictionary, and the like. Moreover, as another preferable embodiment, an automobile using a battery such as an electric vehicle (EV) or a hybrid electric vehicle (HEV) can be given. The electric device 40 can also include a drawer 31 that is fixed to the housing grip 30 at one end and moves in conjunction with the housing grip 30.

  FIG. 2 shows a state in which the upper housing and the lower housing are coupled to each other with respect to the battery 100 having the structure shown in FIG. 1, and the battery 100 is set in the housing of the electric device 40 that supplies power by the battery 100. FIG.

  As shown in FIG. 2, a battery 100, a housing grip portion 30 that grips the upper housing 18 of the battery 100, and one end of the housing are held in the housing of the electric device 40 (a portion surrounded by a square). A drawer portion 31 is installed which is fixed to the portion 30 and whose other end extends to the outside of the housing of the electric device 40 and moves integrally with the housing gripping portion 30.

  Hereinafter, an example of the operation of separating the upper housing 18 and the lower housing 19 will be described.

  First, the housing gripping portion 30 is moved to the unevenness 13 formed in the caulking process of the battery via the drawer portion 31, and the upper housing 18 is gripped by sandwiching the unevenness 13 by the housing gripping portion 30.

  Thereafter, as shown in FIG. 3, the drawer portion 31 is moved upward and moved in the same direction together with the housing grip portion 30. Thereby, the upper housing | casing 18 and the lower housing | casing 19 are isolate | separated. As a result, the positive electrode 2 fixed to the upper housing 18 and the negative electrode 3 fixed to the lower housing 19 are separated so as not to face each other.

  Thus, since the electric device 40 of the present invention includes the housing gripping portion 30, the upper housing 18 and the lower housing 19 can be easily separated, and the positive electrode 2 and the negative electrode 3 are completely separated. Can be separated. 2 and 3, the upper housing 18 is gripped by the housing gripping portion 30, but the lower housing 19 is gripped by the housing gripping portion 30 and the lower housing 19 is moved downward. It doesn't matter. The description regarding the casing gripping unit 30 is as described in the description of the casing separation system according to the present invention.

  Although the configuration of the present invention has been described above, the scope of the present invention is not limited to these descriptions, and other than the above-described examples, the present invention can be appropriately modified and implemented without departing from the spirit of the present invention. Is. Specifically, various modifications can be made within the scope of the claims, and embodiments obtained by combining technical means appropriately modified within the scope of the claims are also included in the technical scope of the present invention. It is.

  According to the battery of the present invention, since the processing after the battery is used becomes simple, it can contribute to the manufacture and sale of the battery, as well as various electric devices, especially electric vehicles, hybrid electric vehicles and the like. The present invention can be suitably used in the field of devices that use a large amount of batteries and portable electric devices such as notebook computers and mobile phones.

DESCRIPTION OF SYMBOLS 1 Battery can 2 Positive electrode 3 Negative electrode 4 Separator 5 Center pin 6 Winding electrode body 7 Battery cover 8 Upper insulating board (fixing part)
9 Lower insulation plate (fixed part)
DESCRIPTION OF SYMBOLS 10 Metal plate 11 PTC element 12 Gasket 13 Concavity and convexity 14 Positive electrode lead 15 Negative electrode lead 16 Metal plate 17 Metal plate support 18 Upper housing 19 Lower housing 20 Expanded portion 21 Seal ring (sealing member)
30 Housing gripping part 31 Drawer part 40 Electrical device 100 Lithium ion secondary battery (battery)

Claims (9)

A battery comprising a housing, a positive electrode having a positive electrode active material, and a negative electrode having a negative electrode active material,
The casing is composed of an upper casing and a lower casing, and the upper casing and the lower casing each have a fixing portion for fixing a positive electrode or a negative electrode,
One of the positive electrode and the negative electrode is fixed to the fixing part of the upper casing and the fixing part of the lower casing, respectively.
The battery characterized in that the upper housing and the lower housing are separable.   Part or all of the inner peripheral diameter of the upper casing is larger than the outer peripheral diameter of the lower casing, and the upper casing covers part or all of the lower casing. The battery according to claim 1.   Part or all of the inner peripheral diameter of the lower casing is larger than the outer peripheral diameter of the upper casing, and the lower casing covers part or all of the upper casing. The battery according to claim 1.   The battery according to claim 2 or 3, wherein the upper housing and / or the lower housing includes a sealing member for sealing a gap between the upper housing and the lower housing.   The battery according to claim 1, wherein the fixing portion is an insulating plate.   The battery according to any one of claims 1 to 5, wherein the battery is a lithium ion secondary battery.   A case separation system comprising: the battery according to any one of claims 1 to 6; and a case holding portion capable of holding an upper case and / or a lower case included in the battery. .   An electric apparatus comprising: a housing grip part capable of gripping the upper housing and / or the lower housing of the battery according to claim 1.   The method for separating a positive electrode and a negative electrode of a battery according to any one of claims 1 to 6, wherein the positive electrode and the negative electrode of the battery are separated by separating an upper housing and a lower housing of the battery. Are separated so as not to face each other.

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