CN207517789U - Scalable zinc-manganese electricity core - Google Patents
Scalable zinc-manganese electricity core Download PDFInfo
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- CN207517789U CN207517789U CN201721313051.5U CN201721313051U CN207517789U CN 207517789 U CN207517789 U CN 207517789U CN 201721313051 U CN201721313051 U CN 201721313051U CN 207517789 U CN207517789 U CN 207517789U
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Abstract
The utility model discloses a telescopic zinc-manganese cell, which consists of a negative electrode, a positive electrode, solid electrolyte arranged between the negative electrode and the positive electrode and a linear conductor wound outside the positive electrode; the negative electrode is a conductive elastomer, the electrolyte is gel-state electrolyte, and the positive electrode is an elastic fabric with the inner surface sequentially coated with a conductive material and an active material. Compared with the prior art, the utility model discloses a chooseing for use scalable battery pack, having given the excellent deformability of zinc-manganese electricity core, can bear flexible, crooked and coiling, application scope is wider, has good application prospect.
Description
Technical Field
The utility model belongs to the technical field of the battery, concretely relates to scalable zinc-manganese electricity core.
Background
The zinc-manganese battery has the advantages of high capacity, high energy density, low price and the like, and is widely applied to the fields of electric toys, digital products, illumination and the like as an energy supply source. The traditional battery preparation process is to coat an active material, a conductive agent and an adhesive on a rigid current collector, then place a diaphragm between a positive electrode and a negative electrode to prevent the two electrodes from short circuit, and finally inject electrolyte into the whole battery. The electric core of the battery is an important component for determining the performance of the battery, and is limited by materials and production processes, the traditional battery lacks the advantages of flexibility, portability, flexibility and the like, and once the component is bent and stretched, cracks can be generated between the structural components to form physical damage, so that the normal use of the battery is influenced. At present, a flexible changeable structural component is adopted to improve the battery deformation capacity, for example, patent 201521049654.X discloses a design scheme of a telescopic battery, in which at least one end of a positive electrode or a negative electrode is connected with the telescopic component to achieve the effect of adjusting the length of the battery, but the electrode and the telescopic structural component adopted in the scheme are still rigid bodies, the battery is only limited to move in the positive and negative one-dimensional directions, and cannot bear the shearing force of three-dimensional deformation, and when the battery is bent, folded and wound, the electrode material and the structural component can be broken, and the battery fails. Therefore, it is important that flexible scalable zn-mn batteries with various designs meet various electronic devices.
Disclosure of Invention
The to-be-solved problem of the utility model is to provide a zinc-manganese cell of scalable, bending, coiling, this electric core can bear the shearing force of three-dimensional deformation, and electrode material and structural component can not the fracture separation.
In order to solve the problem, the utility model adopts the following technical scheme:
a telescopic zinc-manganese battery cell consists of a cathode, an anode, solid electrolyte arranged between the cathode and the anode and a linear conductor wound outside the anode. The negative electrode is a conductive elastomer, the electrolyte is gel-state electrolyte, and the positive electrode is an elastic fabric of which the inner surface is sequentially coated with a conductive material and an active material.
Furthermore, the conductive elastomer is a galvanized extension spring or compression spring, the wire diameter of the spring is 0.5-2mm, the galvanized thickness is 0.05-0.15mm, the length of the spring is equivalent to the standard size of the battery, and one end of the spring is connected with a lead to be used as a negative electrode.
Further, the positive active material includes electrolytic MnO 2 The adhesive comprises powder, graphite powder, a styrene-butadiene latex adhesive and deionized water, wherein the mass ratio of the components is 31-45:7-9:14-18:48-54.
Furthermore, the elastic fabric is carbon fiber cloth or nylon cloth, so that the elastic fabric has good flexibility and stretchability, and the stretching length can reach more than 150%.
Further, a conductive material and a positive electrode material are coated on one side, which is in contact with the electrolyte, of the elastic fabric; and only the side, in contact with the linear conductor, of the elastic fabric is coated with a conductive material compact layer, and the conductive material is metal, carbon nano tubes or graphite powder.
Further, the solid electrolyte comprises KOH, znO and polyacrylic acid, wherein the molar ratio of KOH to ZnO is 4-8:0.2-0.6, polyacrylic acid accounts for 1.2-2.0% of the total mass of the mixed solution, and the molecular weight of the polyacrylic acid is between 100 and 130 ten thousand.
Furthermore, one end of the linear conductor is connected with the positive electrode, the other end of the linear conductor is used as the positive electrode to be connected with a load, the linear conductor is tightly wound outside the positive electrode elastic fabric in a spiral form, and no gap exists between the wound rings; the linear conductor also has a linkage effect with the cathode and is not easy to separate from other components of the battery, and the linear conductor is made of copper, iron, silver wires and other metals.
The utility model discloses following beneficial effect has:
the utility model discloses use conductive elastomer as the negative pole, use coating conducting material and active material's elastic fabric as the positive pole, contain solid-state electrolyte between positive pole and the negative pole to utilize the inseparable winding of linear conductor heliciform to form scalable zinc manganese electricity core at the positive pole surface. Because each component of the battery has good telescopic performance, the obtained zinc-manganese battery core has excellent deformation capacity, can bear telescopic, bending and winding, has wide application range and good prospect.
Drawings
Fig. 1 is a schematic diagram of the three-dimensional structure of the scalable zn-mn cell of the present invention.
Fig. 2 is a schematic diagram of a cross section of the scalable zn-mn cell of the present invention.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more clearly understood by those skilled in the art, and the scope of the present invention can be more clearly defined.
Example 1: design method of telescopic zinc-manganese battery cell
As shown in fig. 1-2, the scalable zn-mn cell of the present embodiment includes a negative electrode 1, a positive electrode 3, a solid electrolyte 2 disposed between the negative electrode and the positive electrode, and a linear conductor 4 wound outside the positive electrode 3.
Wherein, the negative electrode 1 is a galvanized spring wrapped by the solid electrolyte 2, and the thickness of the galvanized layer is 0.05-0.15mm, preferably 0.1mm.
The solid electrolyte 2 comprises KOH, znO and polyacrylic acid, wherein the molar ratio of the KOH to the ZnO is 4-8:0.2-0.6, preferably 6:0.4, polyacrylic acid accounts for 1.2-2.0% of the total mass of the mixed solution, preferably 1.6%, and the molecular weight of polyacrylic acid is 100-130 ten thousand, preferably 125 ten thousand.
The positive electrode 3 is formed by coating an elastic fabric with conductive silver paste on the front side and the back side as a substrate and coating an active material on the inner surface, and the elastic fabric is preferably nylon cloth.
The conductive silver paste is uniformly coated on two sides of the nylon cloth to form a flat film, and then the conductive silver paste film on one side of the nylon cloth is coated with an active material. The active material comprising electrolytic MnO 2 The adhesive comprises powder, graphite powder, a styrene-butadiene latex adhesive and deionized water, wherein the mass ratio of the components is 31-45:7-9:14-18:48-54, and the preferable mass ratio is 31:7:14:48, the loading capacity of the nylon cloth anode active material can reach 16-20mg/cm 2 But when the active material loading is 18mg/cm 2 The effect is the best.
The linear conductor 4 is tightly wound outside the anode 3 in a spiral form, no gap exists between the coils formed by winding, one end of the linear conductor 4 is connected with the anode 3, and the other end of the linear conductor is used as an anode connection load. The linear conductor 4 is preferably a conventional wire.
Example 2: design method of telescopic zinc-manganese battery cell
The scalable zinc-manganese battery cell prepared in the embodiment comprises a negative electrode 1, a solid electrolyte 2, a positive electrode 3 and a linear conductor 4 for winding.
The negative electrode 1 is a directly custom-made galvanised spring, the galvanised layer thickness being 0.05-0.15mm, preferably 0.1mm.
Preparation of solid electrolyte 2: weighing KOH and ZnO to respectively prepare two aqueous solutions of 4-8mol/L and 0.2-0.6mol/L, wherein the preferable concentrations of the KOH and ZnO aqueous solutions are 6mol/L and 0.4mol/L, then respectively taking the two solutions with equal amount to mix, stirring to be clear, then adding polyacrylic acid accounting for 1.2-2.0% of the mixed solution by mass, preferably 1.6%, stirring in a constant-temperature water bath to obtain clear viscous liquid, wherein the molecular weight of the polyacrylic acid is 100-130 ten thousand, preferably 125 ten thousand.
The preparation method of the positive electrode 3 comprises the following steps:
s1, cutting an elastic fabric into a rectangle, uniformly coating conductive materials on two sides of the elastic fabric, preferably selecting carbon fiber cloth for the elastic fabric, and preferably selecting conductive silver paste for the conductive materials.
And S2, taking the elastic fabric with the front and back surfaces coated with the conductive material as a substrate, and sequentially coating an active material and a solid electrolyte 2 on one side of the elastic fabric.
The active material preparation process comprises the following steps: weighing 31-45% by mass of electrolytic MnO 2 Mixing the powder, 7-9% of graphite powder, 14-18% of styrene-butadiene latex adhesive and 48-54% of deionized water, mixing and ultrasonically forming uniform active material ink, and electrolyzing MnO 2 The preferable mixing ratio of the powder, the graphite powder, the styrene-butadiene latex adhesive and the deionized water is 31:7:14:48.
active material coating process: uniformly coating active material ink on one surface of the carbon fiber cloth by using a spin coater at a fixed rotating speed, removing the poorly adhered active material by using adsorption paper, repeating the spin coating for multiple times, drying the carbon fiber cloth to volatilize the solvent, and finally obtaining the active material with the loading capacity of 16-20mg/cm 2 The active material loading is preferably 18mg/cm 2 。
S3, coating the solid electrolyte 2 on the anode 3 and the cathode 1: soaking a galvanized spring serving as a negative electrode in the solid electrolyte 2 to enable the solid electrolyte 2 to be completely adsorbed on the surface of the galvanized spring; in addition, the solid electrolyte 2 is coated on the side of the carbon fiber cloth containing the active material layer, and the thickness is 0.05-1.5mm, and the preferable thickness is 0.1mm.
S4, assembling the telescopic battery: the spring is completely wrapped on the side of the carbon fiber cloth containing the active material, and finally, the linear conductor 4 is tightly wound outside the positive electrode 3 in a spiral form, and the linear conductor 4 is preferably a conventional wire. One end of the lead is connected with the anode 3, the other end of the lead is used as the anode to be connected with a load, no gap exists between rings formed by winding the lead, and the lead is linked with the cathode 1 and is not easy to separate the battery components.
The utility model discloses a flexible assembly, the replacement through flexible assembly can obtain various forms and the electric core of size such as lead-acid batteries, cadmium-nickel battery, nickel-hydrogen battery and zinc silver oxide battery, and these changes all fall into this patent's protection scope with the improvement.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (8)
1. A scalable zinc-manganese cell is characterized by comprising a negative electrode, a positive electrode, solid electrolyte arranged between the negative electrode and the positive electrode, and a linear conductor wound outside the positive electrode; the negative electrode is a conductive elastomer, the electrolyte is gel-state electrolyte, and the positive electrode is an elastic fabric with the inner surface sequentially coated with a conductive material and an active material.
2. The scalable zinc-manganese cell of claim 1, wherein the negative conductive elastomer is a galvanized extension spring or compression spring.
3. The scalable zinc-manganese cell of claim 1, wherein the positive active material comprises electrolytic MnO 2 Powder, graphite powder, styrene-butadiene latex adhesive and deionized water; the positive conductive material is conductive silver paste.
4. The scalable zinc-manganese cell of claim 1, wherein the solid electrolyte consists of KOH, znO, and polyacrylic acid.
5. The scalable zinc-manganese cell of claim 1, wherein the elastic fabric is carbon fiber cloth or nylon cloth.
6. The scalable zinc-manganese cell of claim 1, wherein the side of the elastic fabric in contact with the electrolyte is coated with a conductive material and a positive electrode material; and only the side, which is in contact with the linear conductor, of the elastic fabric is coated with a conductive material compact layer, and the conductive material is metal, carbon nano tubes or graphite powder.
7. The scalable zinc-manganese cell of any one of claims 1 to 6, wherein the linear conductor is tightly wound outside the positive elastic fabric in a spiral form, and the linear conductor is made of metal such as copper, iron, silver wire and the like.
8. The scalable zinc-manganese cell of any one of claims 1-6, wherein one end of the linear conductor is connected to a positive electrode, the other end of the linear conductor is connected to a load as the positive electrode, and the linear conductor is linked to a negative electrode.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681170A (en) * | 2017-10-12 | 2018-02-09 | 惠州市金能源科技有限公司 | Scalable zinc-manganese cell and preparation method of anode thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681170A (en) * | 2017-10-12 | 2018-02-09 | 惠州市金能源科技有限公司 | Scalable zinc-manganese cell and preparation method of anode thereof |
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