阅读说明：本技术 储能的电缆及其制备工艺 (Energy storage cable and preparation process thereof ) 是由 杨文伟 于 2021-07-09 设计创作，主要内容包括：本发明涉及电缆电线技术领域,尤其是自身具蓄电功能的储能的电缆及其制备工艺,克服使用蓄电池的空间占用和维护成本高的缺陷,方案是电缆包括芯部的导体、包裹导体的第一绝缘层,在第一绝缘层外包裹至少一组储电单元,储电单元外设护套层,储电单元包括自内向外依次的第一电极层、电解质层和第二电极层,第一电极层和第二电极层为由浸渍或涂覆导电介质烘干后的薄带包裹而成的包裹层,第一电极层和第二电极层在储能的电缆的两端分别伸出接线端；电解质层为由包含聚乙烯醇和磷酸的80～100℃水溶物涂抹于第一电极层烘干后形成的包裹层,产品经芯线制备、电极带制备、电解质制备、绕包第一电极层、涂抹电解质、绕包第二电极层和包覆护套层加工而成。(The invention relates to the technical field of cables and wires, in particular to an energy storage cable with an electric storage function and a preparation process thereof, which overcome the defects of space occupation and high maintenance cost of a storage battery, and the scheme is that the cable comprises a conductor of a core part and a first insulating layer wrapping the conductor, at least one group of electricity storage units are wrapped outside the first insulating layer, a sheath layer is arranged outside the electricity storage units, the electricity storage units comprise a first electrode layer, an electrolyte layer and a second electrode layer which are sequentially arranged from inside to outside, the first electrode layer and the second electrode layer are wrapping layers formed by wrapping thin strips which are impregnated or coated with conductive media and dried, and the first electrode layer and the second electrode layer respectively extend out of wiring terminals at two ends of the energy storage cable; the electrolyte layer is smeared on a wrapping layer formed after the first electrode layer is dried by a 80-100 ℃ water-soluble substance containing polyvinyl alcohol and phosphoric acid, and the product is formed by core wire preparation, electrode belt preparation, electrolyte preparation, wrapping of the first electrode layer, smearing of the electrolyte, wrapping of the second electrode layer and wrapping of the sheath layer.)

1. An energy storing cable comprising a conductor (1) of a core, a first insulating layer (2) surrounding the conductor (1), characterized in that: at least one group of electricity storage units are wrapped outside the first insulating layer (2), a sheath layer (3) is arranged on the outer ring of each electricity storage unit, each electricity storage unit comprises a first electrode layer (4), an electrolyte layer (5) and a second electrode layer (6) which are sequentially arranged from the inner ring to the outer ring,

the first electrode layer (4) and the second electrode layer (6) are wrapping layers formed by circumferentially spirally wrapping or axially wrapping a polymer tape or a non-woven fabric tape which is soaked or coated with a conductive medium and dried, and the first electrode layer (4) and the second electrode layer (6) are respectively provided with extended wiring terminals at two ends of the energy storage cable;

the electrolyte layer (5) is a wrapping layer formed by coating a fluid containing an electrolytic medium on the first electrode layer (4) and drying.

2. A cable for storing energy as in claim 1, wherein: the electrolyte layer (5) is a wrapping layer formed by coating a 80-100 ℃ water soluble substance containing polyvinyl alcohol and phosphoric acid on the first electrode layer (4) and drying the first electrode layer.

3. A cable for storing energy as in claim 1, wherein: the electricity storage units are two or more groups arranged from the inner ring to the outer ring, and adjacent electricity storage units are insulated and isolated by a second insulating layer (7).

4. A cable for storing energy as in claim 1, wherein: the number of the conductors (1) wrapping the first insulating layer (2) of the cable core is one or more than one.

5. An energy storing cable according to claim 4, wherein: the two conductors (1) comprise positive leads and negative leads which are insulated from each other.

6. A cable for storing energy as in claim 1, wherein: the first electrode layer (4) is a positive electrode of the electricity storage unit, and the second electrode layer (6) is a negative electrode of the electricity storage unit.

7. A cable for storing energy as in claim 1, wherein: the first electrode layer (4) is a negative electrode of the electricity storage unit, and the second electrode layer (6) is a positive electrode of the electricity storage unit.

8. The process for preparing an energy-storing cable according to claim 1, wherein: comprises the following steps:

melting, extruding and coating a polymer insulating material on a conductor (1) to form a core wire comprising the conductor (1) and a first insulating layer (2); fully stirring and dispersing a carbon nano tube conductive agent in N-methyl pyrrolidone or water, adding a binder, stirring to form a conductive medium, coating or soaking the conductive medium in a polymer belt or a non-woven fabric belt, and drying to respectively form a first electrode belt and a second electrode belt; preparing a 80-100 ℃ water-soluble substance of polyvinyl alcohol and phosphoric acid for later use;

secondly, the first electrode belt is wrapped circumferentially or axially wrapped outside the core wire first insulating layer (2) to form a first electrode layer (4);

pouring the prepared 80-100 ℃ water-soluble substance of polyvinyl alcohol and phosphoric acid outside the first electrode layer (4) in a temperature maintaining state, and drying to form an electrolyte layer (5) coating the first electrode layer (4);

fourthly, a second electrode strip is wrapped or axially wrapped on the periphery of the electrolyte layer (5) to form a second electrode layer (6), and a circumferential electricity storage unit with a layered structure is formed in the second step (II) to the fourth step (IV);

and (V) extruding and coating the molten high polymer material on the surface of the second electrode layer (6) and cooling to form the sheath layer (3).

9. A process for preparing an energy storage cable according to claim 8, wherein: and (5) coating or wrapping the second insulating layer (7) at least once and repeating the processes of preparing the additional power storage unit from the step (two) to the step (four) at least once between the step (four) and the step (five).

Technical Field

The invention relates to the technical field of cables and wires, in particular to an energy storage cable and a preparation process thereof.

Background

At present, when a common battery is connected with a cable, the cable is only used for power transmission, the cable and the battery are separate bodies and need to be matched for use, the requirement on a use space is high, for example, a use occasion is taken as an example, the solar street lamp on rural roads or mountain and village roads, electric energy generated by the solar battery is stored on a storage battery in the daytime, and the storage battery supplies power to an LED illuminating lamp at night.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the cable with the electricity storage function is provided, and the problems of space occupation and high maintenance cost under the condition of using the storage battery are avoided.

The technical scheme adopted by the invention for solving the technical problems is as follows: an energy storage cable comprises a conductor of a core part and a first insulating layer wrapping the conductor, wherein at least one group of electricity storage units are wrapped outside the first insulating layer, a sheath layer is arranged on the outer ring of each electricity storage unit, each electricity storage unit comprises a first electrode layer, an electrolyte layer and a second electrode layer which are sequentially arranged from an inner ring to an outer ring,

the first electrode layer and the second electrode layer are wrapping layers formed by circumferentially spirally wrapping or axially wrapping a polymer tape or a non-woven fabric tape which is dipped or coated with a conductive medium and dried, and the first electrode layer and the second electrode layer are respectively provided with extended wiring terminals at two ends of the energy storage cable;

the electrolyte layer is a wrapping layer formed by coating a fluid containing an electrolytic medium on the first electrode layer and drying the first electrode layer.

Specifically, the electrolyte layer is a wrapping layer formed by coating a 80-100 ℃ water soluble substance containing polyvinyl alcohol and phosphoric acid on the first electrode layer and drying the first electrode layer.

In order to increase the electricity storage capacity of the energy storage cable, the electricity storage units are two or more groups arranged from the inner ring to the outer ring, and adjacent electricity storage units are insulated and isolated by a second insulating layer.

Specifically, the number of the conductors wrapping the first insulating layer of the cable core is one or more.

Specifically, the number of the conductors is two, and the conductors comprise a positive electrode lead and a negative electrode lead which are insulated from each other.

Specifically, the first electrode layer is a positive electrode of the electricity storage unit, and the second electrode layer is a negative electrode of the electricity storage unit.

In another reverse arrangement, the first electrode layer is a negative electrode of the electricity storage unit, and the second electrode layer is a positive electrode of the electricity storage unit.

The energy storage cable is manufactured by the following preparation process and comprises the following steps:

melting, extruding and coating a polymer insulating material on a conductor to form a core wire comprising the conductor and a first insulating layer; fully stirring and dispersing a carbon nano tube conductive agent in N-methyl pyrrolidone or water, adding a binder, stirring to form a conductive medium, coating or soaking the conductive medium in a polymer belt or a non-woven fabric belt, and drying to respectively form a first electrode belt and a second electrode belt; preparing a 80-100 ℃ water-soluble substance of polyvinyl alcohol and phosphoric acid for later use;

secondly, the first electrode belt is wrapped circumferentially or axially on the first insulating layer of the core wire to form a first electrode layer;

thirdly, pouring the prepared 80-100 ℃ water-soluble substance of the polyvinyl alcohol and the phosphoric acid outside the first electrode layer in a temperature maintaining state, and drying to form an electrolyte layer coating the first electrode layer;

fourthly, wrapping or axially wrapping a second electrode strip outside the electrolyte layer to form a second electrode layer, and forming a circumferential electricity storage unit with a layered structure by the steps from the second step to the fourth step;

and fifthly, extruding and coating the molten polymer material on the surface of the second electrode layer, and cooling to form a sheath layer.

Increasing the power storage capacity of the cable by increasing the number of power storage units, there is therefore also a process of coating or wrapping the second insulating layer at least once and repeating the steps (two) to (four) at least once to prepare further power storage units between step (four) and step (five).

The invention has the beneficial effects that: the invention wraps at least one group of electricity storage units outside the wire core conductor, the electricity storage units are composed of positive and negative electrodes and electrolyte, so that the cable has both the electric conduction function and the electricity storage function, the electricity storage capacity of the cable is mainly determined by the length, the number of the electricity storage units and the electrochemical performance of the electricity storage units, and the cable can be applied to some places where storage batteries are not suitable to be used.

Drawings

FIG. 1 is a schematic cross-sectional view of the present invention;

fig. 2 is a schematic lengthwise view of the present invention.

In the figure: 1. conductor, 2, first insulating layer, 3, restrictive coating, 4, first electrode layer, 5, electrolyte layer, 6, second electrode layer, 7, second insulating layer, 8, filling layer.

Detailed Description

The following describes technical solutions in embodiments of the present invention in detail with reference to the accompanying drawings of the present specification.

An energy-storing cable as shown in figure 1, which comprises a conductor 1 of a core part and first insulating layers 2 wrapping the conductor, wherein two conductors 1 wrapping the first insulating layers 2 are provided, in order to facilitate the process, a filling layer 8 is provided outside the first insulating layers 2, the outer contour of the filling layer 8 is cylindrical, two groups of electricity-storing units are wrapped outside the filling layer 8, the outer ring of the electricity-storing unit is provided with a sheath layer 3, each electricity-storing unit comprises a first electrode layer 4, an electrolyte layer 5 and a second electrode layer 6 which are sequentially arranged from the inner ring to the outer ring, the first electrode layer 4 and the second electrode layer 6 are wrapping layers formed by circumferentially and spirally wrapping a high-molecular belt or a non-woven belt which is impregnated or coated with a conductive medium and dried, when an axial wrapping mode is adopted, at least partial glue is required to be coated on the belt to be adhered with the material of the inner ring, and no matter whether the belt is wrapped circumferentially or axially, the adjacent belts are required to be provided with stacked parts to ensure complete wrapping, the first electrode layer 4 and the second electrode layer 6 are respectively provided with extended terminals at two ends of the energy storage cable, as shown in figure 2; the electrolyte layer 5 is a wrapping layer formed by coating a 80-100 ℃ water-soluble substance containing polyvinyl alcohol and phosphoric acid on the first electrode layer 4 after drying, the electricity storage units in the attached drawing 1 are two groups arranged from the inner ring to the outer ring, the two groups of electricity storage units are insulated and separated by the second insulating layer 7, and the conductor 1 comprises a positive lead and a negative lead which are insulated from each other.

The first electrode layer 4 is a positive electrode of the electricity storage unit, and the second electrode layer 6 is a negative electrode of the electricity storage unit.

When the cable is used, the extending ends of the first electrode layer 4 and the second electrode layer 6 at two ends of the cable are used as wiring ends, each wiring end is electrically connected with an electric device and a control device according to needs, and when two or more groups of electricity storage units are arranged, the positive and negative electrodes of each electricity storage unit are connected in parallel or in series according to needs.

The preparation process of the energy storage cable comprises the following specific steps:

melting, extruding and coating a polymer insulating material on a conductor 1 to form a core wire comprising the conductor 1 and a first insulating layer 2; fully stirring and dispersing a carbon nano tube conductive agent in N-methyl pyrrolidone or water, adding a binder, stirring to form a conductive medium, smearing or impregnating the conductive medium on a polymer belt or a non-woven fabric belt, and drying through an electric heating pipeline to respectively form a first electrode belt and a second electrode belt; preparing a 80-100 ℃ water-soluble substance of polyvinyl alcohol and phosphoric acid for later use;

secondly, a first electrode belt is wrapped outside the first insulating layer 2 of the core wire in the circumferential direction to form a first electrode layer 4, an intelligent active take-up and pay-off device is needed in a production line, the cable is in a low-stress state as far as possible, and adjacent belts need to be provided with stacked parts to ensure complete wrapping;

thirdly, pouring the prepared 80-100 ℃ water-soluble substance of the polyvinyl alcohol and the phosphoric acid outside the first electrode layer 4 in a temperature maintaining state, and drying the water-soluble substance through an electric heating pipeline to form an electrolyte layer 5 coating the first electrode layer 4; the production line needs to adopt an intelligent active take-up and pay-off device, and the tension borne by the cable is in a low-stress state as far as possible.

(IV) form second electrode layer 6 around the package second electrode area in electrolyte layer 5 periphery, adjacent belt need have the part of piling up in order to guarantee complete parcel, and the production line needs to adopt intelligent initiative take-up and pay-off, and the tension that the cable receives is in the low stress state as far as possible. Forming a circumferential laminated structure of the electricity storage units by the steps (two) to (four);

and fifthly, extruding and coating the molten high polymer material on the surface of the second electrode layer 6, cooling to form the sheath layer 3, wherein an intelligent active take-up and pay-off device is adopted in a production line, and the tension on the cable is in a low-stress state as far as possible.

And (5) between the step (four) and the step (five), a second insulating layer 7 is formed by wrapping the insulating tape once, and the process of preparing a group of electricity storage units in the step (two) to the step (four) is repeated once, so that the cross-sectional shape of the manufactured electricity storage cable is as shown in figure 1.

The first electrode belt and the second electrode belt are in the form of conductive flexible films, and the electrolyte is in the form of dried flexible solid films.

The innovation of the invention is that the electrochemical properties of the integrated energy storage cable, the electrodes and the electrolyte of the energy storage unit are determined by the state of the art and the future state of the art.

The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.