Battery

Abstract

Disclosed is a method for manufacturing a battery, which comprises: a step for manufacturing a polymer resin metal complex (dislocation) for a positive electrode, the step for manufacturing a mixture for a positive electrode comprising mixing an acrylic resin material with a compound containing a metal element to form the polymer resin metal complex (dislocation) for a positive electrode; and a production step for forming a positive electrode plate by forming a layer containing the polymer resin metal complex for positive electrodes on a positive electrode collector plate. And a step for producing a mixture for negative electrodes, said mixture being obtained by mixing an acrylic resin material or polyvinyl alcohol with a compound containing a metal element, the oxidation number of which increases and decreases between 2 and 3, to form a polymer resin metal complex for negative electrodes (dislocation). And a production step for forming a negative electrode plate by forming a layer containing the polymer resin metal complex for negative electrodes on a negative electrode collector plate. And a process for manufacturing a battery cell using the positive electrode plate and the negative electrode plate.

Description

Technical Field

[0001] The present invention relates to a method for manufacturing a battery, a battery, a method for manufacturing a positive electrode, a positive electrode, a method for manufacturing a negative electrode, and a negative electrode. Background Art

[0002] Conventionally, lithium ion batteries have been widely known as batteries, see Japanese Patent No. 6070822. However, lithium ion batteries are flammable and have problems such as a risk of fire. Based on the above problems, a new type of battery that can replace lithium ion batteries is being sought. Summary of the Invention

[0003] In order to solve the above problems, the present invention provides a method for manufacturing a battery.

[0004] The technical solutions adopted by the present invention to solve its technical problems include: providing a method for manufacturing a battery, including:

[0005] A manufacturing process for a polymer resin metal complex (complex) for a positive electrode, that is, a manufacturing process for a mixture for a positive electrode:

[0006] A process of forming a layer containing the polymer resin metal complex (complex) for the positive electrode on a positive electrode current collector plate, that is, a positive electrode plate manufacturing process;

[0007] A manufacturing process for a polymer resin metal complex (complex) for a negative electrode, that is, a manufacturing process for a mixture for a negative electrode;

[0008] A process of forming a layer containing the polymer resin metal complex (complex) for the negative electrode on a negative electrode current collector plate, that is, a negative electrode plate manufacturing process;

[0009] And a process of manufacturing a battery cell using the positive electrode plate and the negative electrode plate, that is, a battery cell manufacturing process;

[0010] Among them, the manufacturing process for the positive electrode mixture includes mixing an acrylic resin material with a metal element-containing compound to obtain a polymer resin metal complex (complex) for the positive electrode;

[0011] The manufacturing process for the negative electrode mixture includes mixing an acrylic resin material or polyvinyl alcohol with a metal element-containing compound whose oxidation number varies between +2 and +3 to obtain a polymer resin metal complex (complex) for the negative electrode.

[0012] The effect of the present invention: The present invention provides a new method for manufacturing a battery. Brief Description of the Drawings

[0013] Figure 1 A flowchart showing the method for manufacturing a battery;

[0014] Figure 2 Flow chart showing the method for manufacturing the positive electrode plate;

[0015] Figure 3 Flow chart showing the method for manufacturing the negative electrode plate;

[0016] Figure 4 Schematic diagram showing the structure of the positive electrode plate;

[0017] Figure 5 Schematic diagram showing the structure of the negative electrode plate;

[0018] Figure 6 Schematic diagram showing the structure of the battery;

[0019] Figure 7 Schematic diagram showing the methods for manufacturing the positive electrode plate and the negative electrode plate;

[0020] Figure 8 Schematic diagram showing the method for manufacturing the battery;

[0021] Figure 9 Performance of the battery before charging;

[0022] Figure 10 Performance of the battery during charging;

[0023] Figure 11 Performance of the battery during discharging.

[0024] Symbol Explanation:

[0025] 1: Positive electrode plate

[0026] 11: Positive current collector plate

[0027] 12: Mixture for positive electrode

[0028] 2: Negative electrode plate

[0029] 21: Negative current collector plate

[0030] 22: Mixture for negative electrode

[0031] 3: Separator

[0032] 4: Insulator

[0033] 5: Battery Detailed Embodiments

[0034] The following describes the embodiments of the present invention for better understanding. However, the present invention is not limited to the following preferred embodiments and can be freely changed within the scope of the present invention.

[0035] The present invention provides a method for manufacturing a battery, comprising:

[0036] Process for manufacturing a mixture for a positive electrode, which is a polymer resin metal complex mixture for manufacturing a positive electrode;

[0037] Process for manufacturing a positive electrode plate, which forms a positive electrode plate by forming a layer containing the polymer resin metal complex mixture for the positive electrode on a positive electrode current collector plate;

[0038] Process for manufacturing a mixture for a negative electrode, which is a polymer resin metal complex mixture for manufacturing a negative electrode;

[0039] Process for manufacturing a negative electrode plate, which constitutes a negative electrode plate by forming a layer containing the polymer resin metal complex mixture for the negative electrode on a negative electrode current collector plate;

[0040] And a process for manufacturing a battery cell using the positive electrode plate and the negative electrode plate;

[0041] Wherein, the process for manufacturing the mixture for the positive electrode includes mixing an acrylic resin material with a compound containing a metal element to form a polymer resin metal complex mixture for the positive electrode (i.e., a polymer resin complex for the positive electrode);

[0042] The process for manufacturing the mixture for the negative electrode includes mixing an acrylic resin material or polyvinyl alcohol with a compound containing a metal element whose oxidation number varies between +2 and +3 to form a polymer resin metal complex mixture for the negative electrode (i.e., a polymer resin metal complex for the negative electrode).

[0043] The battery manufactured by the battery manufacturing method according to the present invention has flame retardancy. In addition, the battery manufactured by the battery manufacturing method according to the present invention has a long service life.

[0044] In a preferred embodiment of the present invention, the process for manufacturing the mixture for the positive electrode includes mixing an acrylic resin material with a compound containing a metal element whose oxidation number varies between +5 and +4 to form a polymer resin metal complex (complex) for the positive electrode.

[0045] In a preferred embodiment of the present invention, the process for manufacturing the mixture for the positive electrode includes a step of mixing an acrylic resin material with a compound containing a +5 metal, and the process for manufacturing the mixture for the negative electrode includes a step of mixing an acrylic resin material with a mixture containing a +2 metal.

[0046] In a preferred embodiment of the present invention, the process for manufacturing the battery cell is a process of sandwiching a separator between the positive electrode plate and the negative electrode plate.

[0047] In a preferred embodiment of the present invention, the process for manufacturing the mixture for the positive electrode further includes a step of mixing carbon, and the process for manufacturing the mixture for the negative electrode further includes a step of mixing carbon.

[0048] The present invention relates to a battery, which includes:

[0049] The positive electrode plate, the negative electrode plate and the separator;

[0050] The positive electrode plate has a polymer resin metal complex (complex) for the positive electrode and a positive electrode current collector plate.

[0051] The polymer resin metal complex (complex) for the positive electrode contains an acrylic resin and a metal element.

[0052] The negative electrode plate has a polymer resin metal complex (complex) for the negative electrode and a negative electrode current collector plate.

[0053] The polymer resin metal complex for the negative electrode contains an acrylic resin or polyvinyl alcohol and a metal element whose oxidation number increases and decreases between divalent and trivalent.

[0054] The battery according to the present invention has flame retardancy. Also, the battery according to the present invention has a long life.

[0055] Also, the polymer resin metal complex for the positive electrode preferably contains an acrylic resin and a metal element whose oxidation number increases and decreases between pentavalent and tetravalent.

[0056] Also, the polymer resin metal complex for the positive electrode more preferably contains an acrylic resin and a metal element whose oxidation number increases and decreases between pentavalent and trivalent.

[0057] In a preferred embodiment of the present invention, a separator is sandwiched between the positive electrode plate and the negative electrode plate, and the coating surface of the polymer complex for the positive electrode of the positive electrode plate and the coating surface of the polymer complex for the negative electrode of the negative electrode plate are laminated facing the separator side.

[0058] Also, the present invention also relates to a method for manufacturing a positive electrode plate, which includes:

[0059] A positive electrode mixture manufacturing process for manufacturing a polymer resin metal complex for the positive electrode, and a positive electrode plate manufacturing process for manufacturing a positive electrode plate by forming a layer containing the polymer resin metal complex for the positive electrode on a positive electrode current collector plate. The positive electrode mixture manufacturing process includes mixing an acrylic resin material with a compound containing a metal element to form a polymer resin metal complex for the positive electrode.

[0060] The above is a method for manufacturing a positive electrode plate.

[0061] Also, preferably, the positive electrode mixture manufacturing process includes mixing an acrylic resin material with a compound containing a metal element whose oxidation number increases and decreases between pentavalent and tetravalent to form a polymer resin metal complex (complex) for the positive electrode.

[0062] More preferably, the positive electrode mixture manufacturing process includes mixing an acrylic resin material with a compound containing a metal element whose oxidation number increases and decreases between +5 and +3 to form a polymer resin metal complex (complex) for the positive electrode.

[0063] Furthermore, the present invention relates to a positive electrode plate having a polymer resin metal complex for the positive electrode and a positive electrode current collector plate, wherein the polymer resin metal complex (complex) for the positive electrode contains an acrylic resin and a metal element.

[0064] Furthermore, preferably in the present invention, the polymer resin metal complex for the positive electrode contains an acrylic resin and a metal element whose oxidation number increases and decreases between +5 and +4.

[0065] Furthermore, the present invention relates to a method for manufacturing a negative electrode plate, including a negative electrode mixture manufacturing process for manufacturing a polymer resin metal complex for the negative electrode, and a negative electrode plate manufacturing process for manufacturing a negative electrode plate by forming a layer containing the polymer resin metal complex (complex) for the negative electrode on a negative electrode current collector plate. The negative electrode mixture manufacturing process includes mixing an acrylic resin material or polyvinyl alcohol with a mixture containing a metal element whose oxidation number increases and decreases between +2 and +3 to form a polymer resin metal complex (complex) for the negative electrode.

[0066] The above is a method for manufacturing a negative electrode plate.

[0067] Furthermore, the present invention relates to a negative electrode plate having a polymer resin metal complex for the negative electrode and a negative electrode current collector plate, wherein the polymer resin metal complex for the negative electrode contains an acrylic resin or polyvinyl alcohol and a metal element whose oxidation number increases and decreases between +2 and +3.

[0068] The above is a negative electrode plate.

[0069] <1> Method for manufacturing a battery

[0070] The present invention relates to a method for manufacturing a battery, including:

[0071] A positive electrode mixture manufacturing process (S1) for manufacturing a polymer resin metal complex (complex) for the positive electrode;

[0072] A positive electrode plate manufacturing process (S2) for manufacturing a positive electrode plate (1) by forming a layer containing the polymer resin metal complex for the positive electrode on a positive electrode current collector plate (11);

[0073] A negative electrode mixture manufacturing process (S3) for manufacturing a polymer resin metal complex for the negative electrode;

[0074] A negative electrode plate manufacturing step (S4) of manufacturing a negative electrode plate (2) by forming a layer containing the polymer resin metal complex (complex) for the negative electrode on a negative electrode current collector plate (21);

[0075] And a battery cell manufacturing step (S5) of manufacturing a battery cell using the positive electrode plate (1) and the negative electrode plate (2).

[0076] The positive electrode mixture manufacturing step (S1) includes mixing an acrylic resin material and a compound containing a metal element to form a polymer resin metal complex (complex) for the positive electrode.

[0077] The negative electrode mixture manufacturing step (S3) includes mixing an acrylic resin material or polyvinyl alcohol with a compound containing a metal element whose oxidation state varies between divalent and trivalent to form a polymer resin metal complex (complex) for the negative electrode.

[0078] The above is a method for manufacturing a battery.

[0079] Furthermore, the positive electrode mixture manufacturing step (S1) preferably includes mixing an acrylic resin material with a compound containing a metal element whose oxidation state increases and decreases between pentavalent and tetravalent to form a polymer resin metal complex (complex) for the positive electrode.

[0080] Figure 1 A flowchart showing the battery manufacturing method is shown.

[0081] Each step will be described in detail below.

[0082] <1-1> Positive electrode mixture manufacturing step (S1)

[0083] In the positive electrode mixture manufacturing process (S1), a polymer resin complex for the positive electrode is manufactured. In addition, the positive electrode mixture manufacturing step (S1) includes mixing an acrylic resin material and a compound containing a metal element to obtain a polymer resin metal complex (complex) for the positive electrode.

[0084] The compound containing a metal element is preferably a compound containing a metal element whose oxidation state increases and decreases between pentavalent and tetravalent.

[0085] The acrylic resin material preferably contains a synthetic product of an acrylate monomer as a main component.

[0086] The average molecular weight of the acrylic resin material is preferably 3000 or more, more preferably 4000 or more, and further preferably 4500 or more. Also, the average molecular weight of the acrylic resin material is preferably 7000 or less, more preferably 6000 or less, and further preferably 5500 or less. By controlling the average molecular weight of the acrylic resin material within the above range, a positive electrode mixture with better viscosity can be obtained.

[0087] The acrylic resin material may include a synthesis of acrylic monomers and other monomers (such as methacrylates). Through the synthesis, properties such as hardness, durability, and weather resistance can be improved.

[0088] Furthermore, the acrylic resin material may include a dispersant. The dispersant promotes the uniform dispersion of resin particles without agglomeration.

[0089] Examples of the dispersant include anionic dispersants, cationic dispersants, and nonionic dispersants.

[0090] An anionic dispersant is a molecule with an anionic group that is charged on the surface of resin particles. In this way, the resin particles repel each other, preventing agglomeration. Examples of anionic dispersants include carboxylates and sulfonates.

[0091] A cationic dispersant is a molecule with a cationic group that is charged on the surface of resin particles. In this way, the resin particles repel each other, preventing agglomeration. Examples of cationic dispersants include amine compounds and quaternary ammonium salts.

[0092] A nonionic dispersant is an uncharged molecule but has the function of adsorbing on the surface of resin particles to assist in dispersion. Examples of nonionic dispersants include polyacrylic acid and polyethylene glycol.

[0093] Furthermore, the acrylic resin material may also include a stabilizer. The stabilizer can prevent the deterioration of the resin.

[0094] Examples of the stabilizer include antioxidants, light stabilizers, metal complexes, and infrared absorbers.

[0095] The role of the antioxidant is to prevent the reaction with oxygen, delay the deterioration of the resin, and thus extend the life of the resin.

[0096] The light stabilizer can prevent deterioration caused by light such as ultraviolet rays, preventing fading and deterioration.

[0097] Metal complexes have the function of preventing deterioration caused by oxidation and light, especially preventing metal ions such as copper or iron from acting as catalysts in the resin. The infrared absorber can prevent deterioration caused by infrared rays and delay deterioration.

[0098] The acrylic resin material is preferably a liquid at room temperature (25 °C). By using an acrylic resin material that is a liquid at room temperature, it is easy to form a layer containing a polymer resin metal complex on the positive current collector (11).

[0099] As the acrylic resin material, a polymer of one or more monomers selected from methyl acrylate, ethyl acrylate, butyl acrylate, n-butyl acrylate, 2-ethylhexyl acrylate, 2-(dimethylamino)ethyl acrylate, 2-hydroxyethyl acrylate, and / or a synthetic product of the above monomers and other monomers (such as methacrylate) can be used.

[0100] As the metal element whose oxidation number increases and decreases between +5 and +4, vanadium (V), niobium (Nb), and tantalum (Ta) can be listed, but vanadium (V) is preferably used.

[0101] The metal element whose oxidation number increases and decreases between +5 and +4 also preferably increases and decreases between +2 and +3.

[0102] In this embodiment, the process for manufacturing the positive electrode mixture preferably includes a step of mixing the acrylic resin material with a compound containing a +5 metal.

[0103] As the compound containing a +5 metal, vanadium (V) oxide 2 O 5 ), vanadate, and metavanadic acid (HVO 3 ) can be listed, but vanadium oxide and vanadate are preferably used.

[0104] As the vanadate, ammonium vanadate (NH 4 VO 3 ), sodium vanadate (NaVO 3 ), and potassium vanadate (KaVO 3 ) can be listed, but ammonium vanadate (NH 4 VO 3 ) is preferably used.

[0105] In the process (S1) for manufacturing the positive electrode mixture, the metal element is coordinately bonded with an oxygen atom and forms a complex with the carboxyl group or methyl group of acrylic acid to form an acrylate complex.

[0106] Further, in this embodiment, the process for manufacturing the positive electrode mixture may also include a step of mixing the acrylic resin material with a compound containing a +4 metal.

[0107] The ratio of the acrylic resin material to the metal element allows for an appropriate excess use of the acrylic resin material. That is, the ratio of the acrylic resin material to the compound containing a metal with an oxidation number of 5 can allow for an appropriate excess use of the acrylic resin material.

[0108] Specifically, the weight ratio of the acrylic resin material to the compound containing a metal with an oxidation number of 5 or 4 is preferably 1:0.03 to 0.20, more preferably 1:0.05 to 0.15, and even more preferably 1:0.08 to 0.12.

[0109] By adding a sufficient amount of the acrylic resin material, the battery according to the present invention can be manufactured more reliably.

[0110] As the positive electrode mixture (12), other substances may be included in addition to the positive electrode polymer resin metal complex (complex).

[0111] The positive electrode mixture manufacturing step (S1) preferably further includes a step of mixing carbon. The carbon is preferably carbon powder.

[0112] The ratio of the acrylic resin material to the compound containing a metal with an oxidation number of 5 or 4 and carbon is preferably 1:0.03 to 0.20:0.03 to 0.20, more preferably 1:0.05 to 0.15:0.05 to 0.15, and even more preferably 1:0.08 to 0.12:0.08 to 0.12.

[0113] By setting the above numerical range, a sufficient amount of the acrylic resin material can be added to form a more reliable manufacturing of the battery according to the present invention.

[0114] <1-2>Positive electrode plate manufacturing step (S2)

[0115] The present invention includes a positive electrode plate manufacturing process (S2), which manufactures a positive electrode plate by forming a layer containing a positive electrode polymer resin metal complex (complex) on a positive electrode current collector plate (11).

[0116] As the positive electrode current collector plate (11), a copper plate or a carbon graphite film can be preferably used, but a carbon graphite film is more preferably used.

[0117] The thickness of the positive electrode current collector plate (11) is preferably 0.01 mm or more, more preferably 0.03 mm or more, and even more preferably 0.05 mm or more. In addition, the thickness of the positive electrode current collector plate (11) is preferably 0.015 mm or less, more preferably 0.12 mm or less, and even more preferably 0.1 mm or less.

[0118] By controlling the thickness of the positive electrode current collector plate (11) within the above range, the efficiency of the battery can be improved.

[0119] The polymer resin metal complex (complex) for the positive electrode can be used as a material in the process of manufacturing the positive electrode mixture (S1).

[0120] The thickness of the layer containing the polymer resin metal complex (complex) for the positive electrode is preferably 5 μm or more, more preferably 10 μm or more, and still more preferably 20 μm or more. In addition, the thickness of the layer containing the polymer resin metal complex (complex) for the positive electrode is preferably 150 μm or less, more preferably 100 μm or less, and still more preferably 80 μm or less.

[0121] By controlling the thickness of the layer containing the polymer resin metal complex (complex) for the positive electrode within the above range, the efficiency of the battery can be improved.

[0122] In the process of manufacturing the positive electrode plate, preferably, after forming a layer containing the polymer metal complex (complex) for the positive electrode on the positive electrode current collector plate, far-infrared irradiation is performed.

[0123] In addition, in the process of manufacturing the positive electrode plate, as Figure 7 shown, the positive electrode current collector plate coil is unwound, a layer containing the polymer complex (complex) for the positive electrode, that is, the positive electrode mixture, is formed using a coater, and after far-infrared irradiation, the layer containing the polymer complex (complex) for the positive electrode, that is, the positive electrode mixture, is wound into a coil again with the inside facing in.

[0124] <1-3>Process for manufacturing the negative electrode mixture (S3)

[0125] In the process for manufacturing the negative electrode mixture (S3), a polymer resin metal complex (complex) for the negative electrode is manufactured. The process for manufacturing the negative electrode mixture (S3) includes mixing an acrylic resin material or polyvinyl alcohol with a metal element compound whose oxidation number increases and decreases between 2 and 3 to obtain a polymer resin metal complex (complex) for the negative electrode.

[0126] The same materials as those described in <1-1> of <1> can be used for the acrylic resin material.

[0127] Examples of the metal element whose oxidation number increases and decreases between 2 and 3 include iron (Fe), cobalt (Co), and manganese (Mn), but iron (Fe) is preferably used.

[0128] In the present embodiment, the process for manufacturing the negative electrode mixture includes a process of mixing an acrylic resin material with a compound containing a divalent metal. In particular, in the process for manufacturing the positive electrode mixture, when a compound containing a pentavalent metal is used for the positive electrode, it is preferable to use a compound containing a divalent metal for the negative electrode.

[0129] Particularly in the process of manufacturing the positive electrode mixture, when a compound containing a tetravalent metal is used for the positive electrode, it is preferable to use a compound containing a trivalent metal for the negative electrode.

[0130] Examples of the compound containing a divalent metal include iron oxide (FeO), iron sulfate (FeSO 4 ), and iron chloride (FeCl 2 ), but it is preferable to use iron oxide (FeO).

[0131] Hereinafter, in the process of manufacturing the negative electrode mixture (S3), a metal element whose oxidation number varies between divalent and trivalent coordinates with oxygen atoms and forms a complex with the carboxyl group or methyl group of acrylic acid or polyvinyl alcohol, thereby forming an acrylate complex.

[0132] In the present embodiment, the process of manufacturing the negative electrode mixture may also include a step of mixing an acrylic resin material or polyvinyl alcohol with a compound containing a trivalent metal.

[0133] As the negative electrode mixture 22, it may contain a mixture other than the negative electrode polymer resin complex (complex).

[0134] The ratio of the acrylic resin material or polyvinyl alcohol to the metal element whose oxidation number varies between divalent and trivalent preferably makes the acrylic resin material or polyvinyl alcohol in excess. That is to say, the ratio of the acrylic resin material or polyvinyl alcohol to the compound containing a divalent metal also preferably makes the acrylic resin material in excess.

[0135] Specifically, the ratio of the acrylic resin material or polyvinyl alcohol to the compound containing a divalent or trivalent metal is preferably 1:0.03 - 0.20, more preferably 1:0.05 - 0.15, and further preferably 1:0.08 - 0.12.

[0136] By controlling the ratio within this range, the acrylic resin material or polyvinyl alcohol can be sufficiently added, thereby more reliably manufacturing the battery according to the present invention.

[0137] As the negative electrode mixture (22), in addition to the negative electrode polymer resin complex, other substances may also be included.

[0138] The process of manufacturing the negative electrode mixture (S3) preferably further includes a step of mixing carbon. The carbon is preferably carbon powder.

[0139] The ratio of the acrylic resin material or polyvinyl alcohol to the compound containing a divalent or trivalent metal and carbon is preferably 1:0.03 - 0.20:0.03 - 0.20, more preferably 1:0.05 - 0.15:0.05 - 0.15, and further preferably 1:0.08 - 0.12:0.08 - 0.12.

[0140] By controlling the ratio within the above range, the acrylic resin material or polyvinyl alcohol can be sufficiently added, and the battery according to the present invention can be manufactured more reliably.

[0141] <1-4>Negative electrode plate manufacturing process (S4)

[0142] The present invention includes a negative electrode plate manufacturing process (S4), and a negative electrode plate (2) is manufactured by forming a layer containing a negative electrode polymer resin metal complex (complex) on a negative electrode current collector plate (21).

[0143] As the negative electrode current collector plate (21), an aluminum plate or a carbon graphite plate can be preferably used, but a carbon graphite film is more preferably used.

[0144] The thickness of the negative electrode current collector plate (21) is preferably 0.01 mm or more, more preferably 0.03 mm or more, and further preferably 0.05 mm or more. In addition, the thickness of the negative electrode current collector plate (11) is preferably 0.15 mm or less, more preferably 0.12 mm or less, and further preferably 0.1 mm or less.

[0145] By controlling the thickness of the negative electrode current collector plate (21) within the above range, the efficiency of the battery can be improved.

[0146] The negative electrode polymer resin metal complex (complex) can use the material manufactured in the negative electrode mixture manufacturing process (S3).

[0147] The thickness of the layer containing the negative electrode polymer resin metal complex (complex) is preferably 5 μm or more, more preferably 10 μm or more, and further preferably 20 μm or more. In addition, the thickness of the layer containing the positive electrode polymer resin metal complex (complex) is preferably 150 μm or less, more preferably 100 μm or less, and further preferably 80 μm or less.

[0148] By controlling the thickness of the layer containing the negative electrode polymer resin metal complex (complex) within the above range, the efficiency of the battery can be improved.

[0149] In the negative electrode plate manufacturing process, it is preferable to irradiate far-infrared rays after forming a layer containing a negative electrode polymer metal complex (complex) on the negative electrode current collector plate.

[0150] Also, in the negative electrode plate manufacturing process, as Figure 7 shown, the negative electrode current collector plate coil is unwound, a layer containing a negative electrode polymer complex (complex), that is, a negative electrode mixture, is formed using a coater, then far-infrared rays are irradiated, and then the layer containing the negative electrode polymer complex (complex), that is, the negative electrode mixture, is wound into a coil again with the inside facing inward.

[0151] <1-5>Battery cell manufacturing process (S5)

[0152] The battery cell manufacturing process (S5) is preferably a process of sandwiching a separator (3) between the positive electrode plate (1) and the negative electrode plate (2).

[0153] The coating surface of the positive electrode mixture (12) of the positive electrode plate (1) and the coating surface of the negative electrode mixture (22) of the negative electrode plate (2) are preferably laminated with the surfaces facing the separator (3) side.

[0154] As the separator (3), cellulose acetate can preferably be used.

[0155] By using cellulose acetate, the battery according to the present invention can be manufactured more precisely.

[0156] Also, in the lamination process, it is preferable to spray an electrolytic solution on the separator. As the electrolytic solution, for example, an organic germanium solution can be used.

[0157] By using an organic germanium solution, the battery according to the present invention can be manufactured more precisely.

[0158] The thickness of the separator (3) is preferably 0.5 μm or more, more preferably 1.0 μm or more, and further preferably 2.0 μm or more. In addition, the thickness of the separator (3) is preferably 30 μm or less, more preferably 20 μm or less, and further preferably 10 μm or less.

[0159] The thinner the separator (3), the lower the internal resistance can be reduced.

[0160] In the battery cell manufacturing process (S5), it is further preferable to laminate an insulator (4) outside the positive electrode plate (1) or the negative electrode plate (2). For example, as Figure 6 shown, it is preferable to laminate in the order of the positive electrode plate (1) (the coating surface of the positive electrode mixture (12) facing the separator side), the separator (3), the negative electrode plate (2) (the coating surface of the negative electrode mixture (22) facing the separator side), and the insulator (4).

[0161] Then, it is preferable to crimp the laminated material using a crimping device.

[0162] In the battery cell manufacturing process, as Figure 8 shown, the rolls of the positive electrode plate (1), the separator (3), the negative electrode plate (2), and the insulator (4) are unwound, crimped by a crimping device, and then the laminated material is wound into a roll shape.

[0163] Then, wind the obtained laminated material and place it in a polycarbonate can. Add electrolyte and seal it. When an insulator (4) is laminated on the negative electrode plate (2) side of the laminated material, it can be wound with either the positive electrode plate (1) or the insulator (4) on the outside. In addition, when an insulator (4) is laminated on the positive electrode plate (1) of the laminated material, it can be wound with either the negative electrode plate (2) or the insulator (4) on the outside.

[0164] <2> Battery

[0165] The present invention relates to a battery, which includes:

[0166] A positive electrode plate (1), a negative electrode plate (2), and a separator (3), wherein the positive electrode plate (1) has a positive electrode polymer resin metal complex (complex) and a positive electrode current collector plate (11), the positive electrode polymer resin metal complex (complex) contains an acrylic resin and a metal element, the negative electrode plate (2) has a negative electrode polymer resin metal complex (complex) and a negative electrode current collector plate (21), and the negative electrode polymer resin metal complex (complex) contains an acrylic resin and a metal element with an oxidation number varying between 2 and 3. The above-mentioned positive electrode polymer resin metal complex preferably contains an acrylic resin and a metal element with an oxidation number varying between 5 and 4.

[0167] Hereinafter, each component will be described in detail.

[0168] <2-1> Positive electrode plate (1)

[0169] Figure 4 The structure of the positive electrode plate is shown.

[0170] The positive electrode plate (1) includes a positive electrode polymer resin metal complex (complex) and a positive electrode current collector plate (11), and the positive electrode polymer resin metal complex (complex) contains an acrylic resin and a metal element.

[0171] The positive electrode polymer resin metal complex (complex) contains an acrylic resin and a metal element with an oxidation number varying between 5 and 4.

[0172] The positive electrode plate (1) preferably includes a positive electrode current collector plate (11) and a positive electrode mixture (12), and the positive electrode mixture (11) contains a positive electrode polymer resin metal complex (complex).

[0173] As the positive electrode current collector plate (11), the materials described in <1>'s <1-2> can be used.

[0174] As the acrylic resin, the materials described in <1>'s <1-1> can be used.

[0175] As the metal, the materials described in <1>'s <1-1> can be used.

[0176] The ratio of the acrylic resin material, the compound containing a metal with an oxidation number of 5, and carbon is preferably 1:0.03 to 0.20:0.03 to 0.20, more preferably 1:0.05 to 0.15:0.05 to 0.15, and still more preferably 1:0.08 to 0.12:0.08 to 0.12.

[0177] The metal element forms a coordination bond with an oxygen atom and forms a complex with the carboxyl group or methyl group of acrylic acid, forming a polymer metal complex (complex) for the positive electrode.

[0178] Regarding the ratio of the acrylic resin material to the metal element, it is preferable that the acrylic resin material is in excess. That is, regarding the ratio of the acrylic resin material to the compound containing a metal with a pentavalent oxidation number, the acrylic resin can be used in an appropriate excess.

[0179] Specifically, the ratio of the acrylic resin material to the compound containing a metal with a pentavalent oxidation number is preferably 1:0.03 to 0.20, more preferably 1:0.05 to 0.15, and still more preferably 1:0.08 to 0.12.

[0180] The mixture (12) for the positive electrode may also contain carbon. The carbon is preferably carbon powder.

[0181] The ratio of the acrylic resin material, the compound containing a metal with a pentavalent oxidation number, and carbon is preferably 1:0.03 to 0.20:0.03 to 0.20, more preferably 1:0.05 to 0.15:0.05 to 0.15, and still more preferably 1:0.08 to 0.12:0.08 to 0.12.

[0182] <2-2>Negative electrode plate (2)

[0183] Figure 5 Shows the structure of the negative electrode plate.

[0184] The negative electrode plate (2) includes a polymer resin metal complex (complex) for the negative electrode and a negative electrode current collector plate (21). The polymer resin metal complex (complex) for the negative electrode contains an acrylic resin or polyvinyl alcohol, and a metal element whose oxidation number varies between 2 and 3.

[0185] The negative electrode plate (2) contains a negative electrode current collector plate (21) and a mixture (22) for the negative electrode. The mixture (21) for the negative electrode contains a polymer resin metal complex (complex) for the negative electrode.

[0186] As the negative electrode current collector plate (21), the materials described in <1>'s <1-4> can be used.

[0187] As the acrylic resin, the substances described in <1>'s <1-1> can be used.

[0188] As the metal whose oxidation number increases and decreases between 2 and 3, the substances described in <1> <1-3> can be used.

[0189] The metal element whose oxidation number increases and decreases between 2 and 3 forms a coordination bond with an oxygen atom and forms a complex with the carboxyl group or methyl group of acrylic acid to form a polymer metal complex (complex) for the negative electrode.

[0190] Regarding the ratio of the acrylic resin material or polyvinyl alcohol to the metal element whose oxidation number increases and decreases between 2 and 3, the acrylic resin can be used in an appropriate excess. That is to say, regarding the ratio of the acrylic resin material or polyvinyl alcohol to the compound containing a divalent metal, the acrylic resin material or polyvinyl alcohol can also be used in an appropriate excess.

[0191] Specifically, the ratio of the acrylic resin material or polyvinyl alcohol to the compound containing a divalent metal is preferably 1:0.05 to 0.15, and more preferably 1:0.08 to 0.12.

[0192] By setting the ratio within the above range, the acrylic resin material or polyvinyl alcohol can be sufficiently added, thereby more precisely manufacturing the battery according to the present invention.

[0193] The mixture (22) for the negative electrode preferably contains carbon. The carbon is preferably carbon powder.

[0194] The ratio of the acrylic resin material or polyvinyl alcohol to the compound containing a divalent metal and carbon is preferably 1:0.05 to 0.15:0.05 to 0.15, and more preferably 1:0.08 to 0.12:0.08 to 0.12.

[0195] By setting the ratio within the above range, the acrylic resin material or polyvinyl alcohol can be sufficiently added, thereby more precisely manufacturing the battery according to the present invention.

[0196] <2-3>Separator (3)

[0197] As the separator, the materials described in <1> <1-5> can be used.

[0198] <2-4>Battery

[0199] The structure of the battery is as Figure 6 shown.

[0200] In the battery of this embodiment, a structure in which a separator (3) is sandwiched between a positive electrode plate (1) and a negative electrode plate (2) is preferred. Further, the coating surface of the positive electrode mixture (12) of the positive electrode plate (1) and the coating surface of the negative electrode mixture (22) of the negative electrode plate (2) are laminated with the surfaces facing the separator (3).

[0201] The battery in this embodiment may include an insulator (4). Specifically, the insulator (4) is laminated on the outer side of the positive electrode plate (1) or the negative electrode plate (2).

[0202] In the battery of this embodiment, the laminate of the positive electrode plate (1), the separator (3), the negative electrode plate (2), and the insulator (4) is wound in such a manner that the positive electrode plate (1) or the insulator (4) is on the outside. Then, it is placed in a polycarbonate can, and after adding an electrolyte, it is sealed.

[0203] During charging, an oxidation reaction occurs at the positive electrode and a reduction reaction occurs at the negative electrode.

[0204] During discharging, a reduction reaction occurs at the positive electrode and an oxidation reaction occurs at the negative electrode.

[0205] Examples

[0206] <Materials>

[0207] · Polyacrylic Acid (5,000): Wako Pure Chemical Industries, Ltd., grade 1, manufactured by Fuji Film Wako Pure Chemical Corporation, molecular formula [-CH2CH(COOH)-], average molecular weight of approximately 5,000;

[0208] · Ammonium Vanadate (V): Fuji Film Wako Pure Chemical Corporation;

[0209] · Carbon Graphite: Tokai Carbon, 0.05 mm to 0.1 mm;

[0210] · Copper Plate;

[0211] · Iron(II) Chloride Tetrahydrate, reagent grade special, Fuji Film Wako Pure Chemical Corporation, molecular formula: FeCl2·4H2O

[0212] · Formaldehyde

[0213] · Aluminum Plate

[0214] · Cellulose Acetate: Mitsubishi Paper Mills, NanoBase2

[0215] · Fluororesin (fluororesin·PTFE·tetrafluoroethylene), thickness 0.05 mm

[0216] [1] Manufacturing Process of Positive Electrode Mixture (S1)

[0217] 80 - 120 g of acrylic resin is mixed with 8 - 12 g of ammonium vanadate (V) and reacted. In the resulting mixture, 8 - 12 g of carbon and 3 g of water are further mixed.

[0218] Through the above reaction, vanadium forms a coordination bond with oxygen atoms and forms a complex with the carboxyl group and methyl group of acrylic acid.

[0219] [2] Positive electrode plate manufacturing process (S2)

[0220] The positive electrode mixture (12) obtained in the positive electrode mixture manufacturing process (S1) is coated on the positive electrode current collector plate (copper plate) (11). The size of the positive electrode current collector plate (11) is 60 mm (length) × 70 mm (width) × 0.05 mm (thickness). The coating thickness of the positive electrode mixture (12) is 10 μm or more and 100 μm or less.

[0221] After that, the positive electrode mixture (12) coated on the positive electrode current collector plate (11) is completely dried.

[0222] [3] Negative electrode mixture manufacturing process (S3)

[0223] 80 - 120 g of aqueous acrylic resin is mixed with 8 - 12 g of iron(II) chloride and reacted. In the obtained mixed solution, 8 - 12 g of carbon, 4 - 6 g of water, and 4 - 6 g of formaldehyde are further mixed.

[0224] Through the above reaction, iron ions form a coordination bond with the oxygen atoms of the carboxyl group of acrylic acid to form a complex.

[0225] [4] Negative electrode plate manufacturing process (S4)

[0226] The negative electrode mixture (22) obtained in the negative electrode mixture manufacturing process (S3) is coated on the negative electrode current collector plate (aluminum plate) (21). The size of the negative electrode current collector plate (21) is 60 mm × 70 mm × 0.05 mm. The coating thickness of the negative electrode mixture (22) is 10 μm or more and 100 μm or less.

[0227] After that, the negative electrode mixture (22) coated on the negative electrode current collector plate (21) is completely dried.

[0228] [5] Battery cell manufacturing process (S5)

[0229] The positive electrode plate (1) obtained through [1] - [2] and the negative electrode plate (2) obtained through [3] - [4] are laminated with the separator (3) and the fluororesin (insulator (4)) to manufacture a battery cell.

[0230] As the separator (3), cellulose acetate with a thickness of 0.9 μm or more and 10 μm or less is used. An electrolytic solution: an organic germanium solution is sprayed on the cellulose acetate.

[0231] The lamination order is as Figure 6As shown, it is carried out in the order of the positive electrode plate (1), the separator (3), the negative electrode plate (2), and the insulator (4). The coating surface of the mixture (12) for the positive electrode of the positive electrode plate (1) and the coating surface of the mixture (22) for the negative electrode of the negative electrode plate (2) are laminated with the surfaces facing the separator (3).

[0232] The laminated material is crimped using a crimping device.

[0233] The obtained laminate is wound with the positive electrode facing outwards, placed in a polycarbonate can, and sealed after adding an electrolyte.

[0234] Table 1 shows the characteristics of the fabricated battery.

[0235]

Table 1

[0236]

[0237] [6] Charging

[0238] The obtained battery is charged using a charger. Specifically, the positive charge side is connected to the positive electrode, and charging is carried out with a current of 10 mA or more and 40 mA or less. The charging power is approximately 20000 mW / sec. Charging stops when the voltage drops below 3.0 V.

[0239] During charging, an oxidation reaction occurs at the positive electrode and a reduction reaction occurs at the negative electrode.

[0240] Figure 9 The discharge data before the first charging is shown, Figure 10 The charging power data during the first charging is shown.

[0241] Figure 9 The vertical axis of represents the discharge power (mW) at each time point. From Figure 9 it can be seen that there is a weak discharge phenomenon even before charging.

[0242] Figure 10 The line graph in represents the charging power (mW) at each time point (corresponding to the left vertical axis), and the bar graph represents the cumulative charging power (mW) up to that time point (corresponding to the right vertical axis).

[0243] From Figure 10 it can be seen that the battery manufactured by this embodiment can be charged.

[0244] [7] Discharging

[0245] The charged battery is discharged with an output limit of 20 mA / sec.

[0246] During discharging, a reduction reaction occurs at the positive electrode and an oxidation reaction occurs at the negative electrode.

[0247] Figure 11 Displays the discharge data after the first charge.

[0248] The bar graph represents the discharge power (mW) at each time point (corresponding to the left vertical axis). In addition, the line graph represents the cumulative discharge power (mW) up to that time point (corresponding to the right vertical axis).

[0249] From Figure 11 It can be seen that the battery manufactured by this embodiment can achieve discharge.

[0250] Industrial applicability

[0251] According to the present invention, a new type of battery can be provided.

Claims

1. A method for manufacturing a battery, characterized in that: include: The manufacturing process of the polymer resin metal complex (complex) for positive electrode, that is, the manufacturing process of the positive electrode mixture: A process of forming a layer containing the positive electrode polymer resin metal complex (complex) on a positive electrode collector plate, i.e., a positive electrode plate manufacturing process; The manufacturing process of the polymer resin metal complex (complex) for negative electrode, that is, the manufacturing process of the mixture for negative electrode; A process of forming a layer containing the negative electrode polymer resin metal complex (complex) on a negative electrode collector plate, i.e., a negative electrode plate manufacturing process; and a process for manufacturing a battery cell using the positive electrode plate and the negative electrode plate, namely, a battery cell manufacturing process; The positive electrode mixture manufacturing process includes mixing an acrylic resin material with a compound containing a metal element to obtain a polymer resin metal complex (complex) for the positive electrode; The negative electrode mixture manufacturing process includes mixing acrylic resin material or polyvinyl alcohol with a compound containing a metal element whose oxidation number varies between 2 and 3 valences to obtain a high molecular resin metal complex (complex) for the negative electrode.

2. A method for manufacturing a battery according to claim 1, characterized in that: The positive electrode mixture production process includes a process of mixing an acrylic resin material with a compound containing a metal with an oxidation number of 5, and the negative electrode mixture production process includes a process of mixing an acrylic resin material or polyvinyl alcohol with a compound containing a metal with an oxidation number of 2.

3. A method for manufacturing a battery according to claim 1 or 2, characterized in that: The battery cell manufacturing process is a process of sandwiching a separator between the positive electrode plate and the negative electrode plate.

4. A method for manufacturing a battery according to claim 1 or 2, characterized in that: The positive electrode mixture manufacturing process further includes a step of mixing carbon, and the negative electrode mixture manufacturing process further includes a step of mixing carbon.

5. A battery, characterized in that: Including positive plate, negative plate and separator; The positive electrode plate comprises a positive electrode polymer resin metal complex (complex) and a positive electrode collector plate; The positive electrode polymer resin metal complex (complex) comprises acrylic resin and metal elements; The negative electrode plate comprises a negative electrode polymer resin metal complex (complex) and a negative electrode collector plate; The negative electrode polymer resin metal complex (complex) contains an acrylic resin and a metal element whose oxidation number varies between 2 and 3 valences.

6. A battery according to claim 5, characterized in that: A separator is sandwiched between the positive electrode plate and the negative electrode plate, and the positive electrode polymer resin metal complex (complex) coating surface of the positive electrode plate and the negative electrode polymer resin metal complex coating surface of the negative electrode plate are stacked toward the separator side.

7. A method for manufacturing a positive electrode plate, characterized in that: include: A process for manufacturing a positive electrode mixture of a polymer resin metal complex (complex) for manufacturing a positive electrode, and A positive electrode plate manufacturing process of manufacturing a positive electrode plate by forming a layer containing the positive electrode polymer resin metal complex (complex) on a positive electrode collector plate; The positive electrode mixture manufacturing process includes mixing acrylic resin with a compound containing a metal element to obtain a polymer resin metal complex (complex) for the positive electrode.

8. A positive plate, characterized in that: include: The positive electrode plate comprises a positive electrode polymer resin metal complex (complex) and a positive electrode collector plate. The positive electrode polymer resin metal complex (complex) contains acrylic resin and metal elements.

9. A method for manufacturing a negative electrode plate, characterized in that: include: A process for manufacturing a negative electrode mixture of a polymer resin metal complex (complex) for manufacturing a negative electrode, and A negative electrode plate manufacturing process of manufacturing a negative electrode plate by forming a (complex) layer containing the negative electrode polymer resin metal complex on the negative electrode collector plate; The negative electrode mixture manufacturing process includes mixing an acrylic resin material or polyvinyl alcohol with a compound containing a metal element whose oxidation number varies between 2 and 3 to obtain a high molecular resin metal complex for the negative electrode.

10. A negative electrode plate, characterized in that: include: The negative electrode plate comprises a negative electrode polymer resin metal complex and a negative electrode current collector plate; The negative electrode polymer resin metal complex (complex) contains acrylic resin or polyvinyl alcohol, and a metal element whose oxidation number varies between 2 and 3 valences.

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