CN219163434U - Nonmetallic current collector, nonmetallic current collector preparation device, pole piece and battery - Google Patents

Abstract

The utility model provides a nonmetallic current collector, a nonmetallic current collector preparation device, a pole piece and a battery, wherein the nonmetallic current collector comprises a nonmetallic layer, a first conductive layer and a second conductive layer which are positioned on two opposite sides of the nonmetallic layer along the thickness direction; the nonmetallic layer is composed of nonmetallic conductive materials; the upper surface of the nonmetallic layer is provided with a first blank area and a first electroplating area, at least one first electroplating area is arranged along the width direction of the nonmetallic layer, and the first conductive layer is arranged in the first electroplating area; the lower surface of the nonmetal layer is provided with a second blank area and a second electroplating area, the first blank area and the second blank area are vertically corresponding, the first electroplating area and the second electroplating area are vertically corresponding, and the second conductive layer is arranged in the second electroplating area. According to the non-metal current collector, the electrode lug is integrated with the non-metal current collector, the connection of the electrode lug and the non-metal current collector is not needed, the process is simplified, the electrode lug and the non-metal current collector are integrated into a whole, the bonding strength of the electrode lug and the non-metal current collector is high, and the overcurrent capacity of a battery in the charging and discharging process can be improved.

Description

Nonmetallic current collector, nonmetallic current collector preparation device, pole piece and battery

Technical Field

The utility model relates to the technical field of batteries, in particular to a non-metal current collector, a non-metal current collector preparation device, a pole piece and a battery.

Background

Lithium ion batteries have been a very widely used secondary battery at present due to their high energy density and power density. The conventional lithium ion battery current collector adopts a metal foil, the positive electrode usually adopts a metal aluminum foil, the negative electrode usually adopts a metal copper foil, and once internal short circuit occurs in the lithium ion battery prepared by directly adopting the metal foil, the internal part of the battery cannot cut off current, so that heat aggregation finally causes thermal runaway. To solve this problem, researchers have replaced conventional metal current collectors with a new type of non-metal current collector, which typically uses a non-conductive polymer film as a substrate and a layer of metal material is plated on the upper and lower surfaces of the polymer film. For example, aluminum is plated on the upper and lower surfaces of a PET (polyethylene terephthalate) film as a positive electrode current collector, and copper is plated on the upper and lower surfaces of the PET (polyethylene terephthalate) film as a negative electrode current collector, thereby achieving a certain effect of improving the safety performance of the battery.

However, after the nonmetallic current collector is connected with the tab, the contact resistance of the tab connection area is high and the overcurrent capacity is reduced due to the poor binding force between the tab and the current collector, and in addition, the tab yield connected to the composite current collector is low, so that the performance of the composite current collector and the performance of the lithium ion battery are affected to some extent.

Chinese patent CN 110931802B provides a method for preparing a flexible light non-metal current collector, a pole piece, a lithium secondary battery and a method for preparing the same, which comprises using conductive polymer material and non-metal conductive material to prepare the same by template method, wherein the conductive polymer is used as non-metal current collector, and the current collector is provided with external terminal as the lug of the battery due to the non-metal current collector. However, the external terminal prepared in the patent has universality, and the manufacturing process for processing the tab on the current collector is complex and has no popularization.

Disclosure of Invention

In view of the above, the utility model provides a non-metal current collector, a non-metal current collector preparation device, a pole piece and a battery, which are used for solving the problems of insufficient connection strength between the non-metal current collector and a pole lug and small overcurrent capacity.

The technical scheme of the utility model is realized as follows:

in a first aspect, the present utility model provides a non-metal current collector, which includes a non-metal layer, and a first conductive layer and a second conductive layer located on opposite sides of the non-metal layer in a thickness direction;

the nonmetallic layer is composed of nonmetallic conductive materials;

the upper surface of the nonmetallic layer is provided with a first blank area and a first electroplating area, and the first conductive layer is arranged in the first electroplating area;

the lower surface of the nonmetal layer is provided with a second blank area and a second electroplating area, and the second conductive layer is arranged in the second electroplating area.

On the basis of the above technical solution, preferably, the first blank area and the second blank area correspond up and down, and the first electroplating area and the second electroplating area correspond up and down.

On the basis of the above technical solution, preferably, one or two or more first plating areas are disposed along the width direction of the non-metal layer, and when one first plating area is disposed, the first plating area is located at one side of the width direction of the non-metal layer; when two first electroplating areas are arranged, the first electroplating areas are respectively positioned at two sides of the width direction of the nonmetal layer; when the first plating areas are arranged in a plurality, the first plating areas are arranged at intervals along the width direction of the nonmetallic layer.

As some embodiments, the first plating zone is arranged in a one-piece manner, and the first plating zone is disposed along the length of the nonmetallic layer.

In other embodiments, the first plating areas are arranged in a segmented manner, and a plurality of segmented first plating areas are arranged at equal intervals along the length direction of the nonmetallic layer.

Based on the above technical solution, preferably, the total width of the first conductive layer on the same plane of the non-metal layer satisfies: 0.01W0 and W1 and W0, wherein W1 is the total width of all the first conductive layers and W0 is the width of the nonmetallic layer.

On the basis of the above technical solution, preferably, the thickness of the first conductive layer satisfies: 0.01D0 and D1 and D0, wherein D1 is the thickness of the first conductive layer on the same side of the nonmetallic layer and D0 is the thickness of the nonmetallic layer.

The utility model also discloses a nonmetal current collector preparation device, which is used for preparing the nonmetal current collector, and comprises a first balance roller, a negative electrode roller, a positive electrode roller, a second balance roller and an electrochemical deposition tank, wherein the first balance roller and the second balance roller are respectively positioned at two sides of the electrochemical deposition tank, the negative electrode roller and the positive electrode roller are rotatably arranged in the electrochemical deposition tank filled with electrolyte, a nonmetal layer sequentially passes through the first balance roller, the negative electrode roller, the positive electrode roller and the second balance roller to be unreeled and rolled, the surface of the negative electrode roller is coated with a copper layer, the peripheral surface of the positive electrode roller is coated with at least one conductive belt which is matched with the width of a first electroplating area along the axial direction of the positive electrode roller, the negative electrode roller is connected with the negative electrode of an external circuit, and the positive electrode roller is connected with the positive electrode of the external circuit.

In a third aspect, the utility model further discloses a pole piece, the nonmetallic current collector is utilized, the first blank area and the second blank area on the nonmetallic layer are respectively provided with an active coating, and the first conductive layer, the second conductive layer and the nonmetallic layer coated between the first conductive layer and the second conductive layer form a pole lug of the pole piece.

In a fourth aspect, the utility model also discloses a battery, and the pole piece is utilized.

Compared with the prior art, the utility model has the following beneficial effects:

(1) According to the nonmetallic current collector disclosed by the utility model, the nonmetallic layer formed by nonmetallic conductive materials is arranged, so that the nonmetallic layer can replace a conventional metallic current collector, a first electroplating area and a second electroplating area which correspond up and down are respectively arranged on two sides of the nonmetallic layer, a first blank area and a second blank area which correspond up and down are simultaneously arranged, a first conductive layer is arranged in the first electroplating area, a second conductive layer is arranged in the second electroplating area, active coatings are respectively coated on the first blank area and the second blank area, and therefore, the nonmetallic current collector forms a pole piece, at the moment, the first conductive layer, the second conductive layer and the nonmetallic layer coated between the first conductive layer and the second conductive layer form a pole lug of the pole piece, in the process of manufacturing the nonmetallic current collector, the manufacturing of the pole lug can be realized synchronously, the connection of the pole lug and the nonmetallic current collector is not needed, the process is simplified, the connection process of the pole lug and the nonmetallic current collector is simple, and the combination of the pole lug and the nonmetallic current collector is integrated, and the capacity of the nonmetallic current collector is improved, and the capacity of the nonmetallic current collector is high;

(2) At least one first electroplating area is arranged along the width direction of the nonmetal layer, so that a plurality of pole pieces can be separated after the nonmetal current collector is manufactured, and the production efficiency of the pole pieces is improved;

(3) The first electroplating area is arranged in a one-section mode, so that the monopole lug pole pieces can be realized after the non-metal current collector is manufactured into pole pieces, the first electroplating area is arranged in a sectional mode, and the multipolar lug pole pieces can be realized after the non-metal current collector is manufactured into pole pieces by cutting, so that the diversity of the pole lugs is met;

(4) By arranging the nonmetallic current collector preparation device, a first conductive layer can be deposited on a first coating of a nonmetallic layer by a chemical deposition method, and a second conductive layer is deposited on a second coating, so that a lug is directly formed after the nonmetallic current collector is prepared, the lug and the nonmetallic current collector are integrated, and the bonding strength of the lug and the nonmetallic current collector is high.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic side view of a non-metallic current collector according to the present disclosure;

FIG. 2 is a schematic illustration of a first embodiment of a non-metallic layer according to the present disclosure;

FIG. 3 is a schematic illustration of a second embodiment of a non-metallic layer according to the present disclosure;

FIG. 4 is a schematic illustration of a third embodiment of a non-metallic layer according to the present disclosure;

FIG. 5 is a schematic view of a non-metallic current collector according to the present disclosure;

fig. 6 is a schematic view of another construction of a non-metallic current collector in accordance with the present disclosure;

fig. 7 is a schematic plan view of a non-metallic current collector preparing apparatus according to the present disclosure;

FIG. 8 is a schematic view of a positive roller according to the present disclosure;

FIG. 9 is a schematic view of another construction of the positive electrode roll of the present disclosure;

FIG. 10 is a schematic illustration of the structure of a pole piece of the present disclosure;

reference numerals:

s, a nonmetallic current collector; 1. a non-metal layer; 2. a first conductive layer; 3. a second conductive layer; 11. a first blank area; 12. a first plating region; 13. a second blank area; 14. a second plating region; 4. a nonmetallic current collector preparation device; 41. a first balance roller; 42. a negative electrode roller; 43. a positive electrode roller; 44. a second balance roller; 45. an electrochemical deposition cell; 431. a conductive tape; 5. a pole piece; 51. a tab; 52. a reactive coating;

Detailed Description

The following description of the embodiments of the present utility model will clearly and fully describe the technical aspects of the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model.

As shown in fig. 1, in combination with fig. 2 to 6, an embodiment of the present utility model discloses a non-metal current collector S, which includes a non-metal layer 1, and a first conductive layer 2 and a second conductive layer 3 located on opposite sides of the non-metal layer 1 in a thickness direction.

The nonmetal layer 1 is composed of nonmetal conductive materials, and specifically, the nonmetal conductive materials can be conductive polymers or other nonmetal conductive materials, wherein the conductive polymers are one or a mixture of more of polyacetylene, polythiophene, polypyrrole, polyaniline, polyphenylene, polystyrene and polydiacetylene; the other nonmetallic conductive materials are one or more of graphene, carbon nano tubes, super-P, acetylene black and conductive graphite.

In this embodiment, the non-metal layer 1 is made of the non-metal material, which has the characteristics of ultra-thin, light weight, high strength, strong flexibility, and the like, and is convenient to process and manufacture, and low in manufacturing cost, and the material itself adopted by the non-metal layer 1 can store a certain amount of lithium ions, so that the non-metal current collector made of the non-metal layer 1 can directly replace the traditional metal current collector, and the energy density of the battery can be improved.

Due to the flexibility of the non-metal layer 1, the non-metal current collector manufactured by the non-metal layer 1 has certain difficulty in the process of manufacturing the subsequent pole piece 5, particularly, the electrode lug 51 is connected to the non-metal layer 1, the electrode lug 51 and the non-metal layer 1 are usually welded or welded, the bonding force between the electrode lug 51 and the non-metal layer 1 is poor in the mode, the contact resistance of the electrode lug 51 connecting area is high, the overcurrent capacity is reduced, in addition, the yield of the electrode lug 51 connected to the non-metal current collector is low, and finally, certain influence is generated on the performance of the non-metal current collector and the lithium ion battery.

In order to solve the above problems, the scheme adopted in this embodiment is as follows: the upper surface of the non-metal layer 1 is provided with a first blank area 11 and a first electroplating area 12, at least one first electroplating area 12 is arranged along the width direction of the non-metal layer 1, and the first conductive layer 2 is arranged in the first electroplating area 12.

The lower surface of the non-metal layer 1 is provided with a second blank area 13 and a second electroplating area 14, the first blank area 11 and the second blank area 13 are vertically corresponding, the first electroplating area 12 and the second electroplating area 14 are vertically corresponding, and the second conductive layer 3 is arranged in the second electroplating area 14.

In the above embodiment, the first and second blank areas 11 and 13 are used for subsequent application of the active coating to form the pole piece 5.

In this embodiment, the first conductive layer 2 and the second conductive layer 3 may be both made by physical vapor deposition or electrochemical deposition, and the first conductive layer 2 and the second conductive layer 3 are conductive metals. Copper or copper alloy is preferable in this embodiment. The first conductive layer 2, the second conductive layer 3 and the nonmetal layer 1 coated between the first conductive layer 2 and the second conductive layer 3 form the tab 51 of the pole piece 5, and the manufacturing of the tab 51 can be synchronously realized in the process of manufacturing the nonmetal current collector, so that the tab is integrated into the nonmetal current collector, the tab and the current collector are not required to be connected in the manufacturing process of the pole piece, the process is simplified, the connection process of the tab 51 and the nonmetal current collector is simple on one hand, the tab 51 and the nonmetal current collector are integrated on the other hand, the bonding strength of the tab 51 and the nonmetal current collector is high, and the overcurrent capacity in the charging and discharging processes of the battery can be improved.

Referring to fig. 2 to 6, the first plating section 12 disclosed in this embodiment is provided in one or two or more, and is located on one side in the width direction of the nonmetallic layer 1 when the first plating section 12 is provided in one; the other side surface in the width direction of the nonmetal is provided with a first blank region 11, and the first plating region 12 and the first blank region 11 are parallel to each other with respect to the length direction of the nonmetal layer 1.

When two first plating areas 12 are provided, they are located on both sides of the nonmetallic layer 1 in the width direction, respectively; the first blank area 11 is located between the two first plating areas 12, and the first blank area 11 and the two first plating areas 12 are parallel to each other with respect to the length direction of the nonmetallic layer 1.

When the first plating regions 12 are provided in plural, the plural first plating regions 12 are provided at intervals in the width direction of the nonmetallic layer 1. In this embodiment, as a preferred embodiment, the first plating areas 12 are disposed on two sides of the non-metal in the width direction, a plurality of first plating areas 12 are disposed between two first plating areas 12 at equal intervals, the first blank area 11 is disposed between two adjacent first plating areas 12, and the intervals between two adjacent first plating areas 12 are equal.

It should be noted that the second plating area 14 is disposed on the surface of the non-metal layer 1 in the same manner as the first plating area 12, and the second plating area 14 and the first plating area 12 correspond up and down with respect to the non-metal layer 1. The arrangement of the second blank area 13 on the surface of the non-metal layer 1 is the same as the arrangement of the second blank area 13, and the second blank area 13 and the first blank area 11 correspond up and down relative to the non-metal layer 1.

By arranging at least one first electroplating area 12 along the width direction of the nonmetal layer 1, a plurality of pole pieces 5 can be separated after the nonmetal current collector is manufactured, and the production efficiency of the pole pieces 5 is improved.

Specifically, when the first plating area 12 is disposed on one side in the width direction of the non-metal layer 1, the non-metal current collector may be fabricated as one electrode sheet 5.

When two first plating areas 12 are provided, they are respectively located at two sides of the width direction of the non-metal layer 1, and are divided along the length direction of the non-metal layer 1 along the width direction center of the non-metal layer 1, so as to form two pole pieces 5.

When the number of the first plating regions 12 is plural, the plural first plating regions 12 are arranged at equal intervals in the width direction of the non-metal layer 1, and the plural pole pieces 5 are formed by dividing the center in the width direction of the first blank region 11 along the length direction of the non-metal layer 1.

As an embodiment, the first plating zone 12 is arranged in a single stage, and the first plating zone 12 is disposed along the length of the nonmetallic layer 1. Therefore, after the first electroplated layer is arranged in the first electroplated area 12, and after the second electroplated layer is arranged in the second electroplated area 14, when the whole nonmetallic current collector is used as a carrier of the pole piece 5, the first conductive layer 2, the second conductive layer 3 and the nonmetallic layer 1 coated between the first conductive layer 2 and the second conductive layer 3 form a pole lug 51 of the pole piece 5, the pole lug 51 is a single pole lug 51, and the pole piece 5 with the structure can be suitable for manufacturing a battery cell by the pole piece 5 in a lamination mode.

Of course, although the first conductive layer 2 is provided along the length direction on one side in the non-metal width direction in the above embodiment, the first conductive layer 2, the second conductive layer 3 and the wrapped non-metal layer 1 may be divided along the thickness direction of the non-metal current collector by cutting, so that a plurality of tabs 51 are formed, and the pole piece 5 is suitable for manufacturing a wound cell.

As another embodiment, the first plating areas 12 are arranged in a sectional manner, and the plurality of sectional first plating areas 12 are arranged at equal intervals along the length direction of the non-metal layer 1, so that a certain interval exists between two adjacent first plating areas 12 in the non-metal length direction, then the first plating areas 12 are provided with the first conductive layer 2, the second plating areas 14 are provided with the second conductive layer 3, and then the non-metal layer 1 between the two adjacent first conductive layers 2 and the second conductive layer 3 is cut off along the thickness direction of the non-metal current collector in a cutting manner, so that a plurality of tabs 51 are formed, and the pole piece 5 is further suitable for manufacturing a coiled battery core.

In the two embodiments, the pole piece 5 of the multipolar lug 51 can be realized, so that the diversity of the pole lug 51 is satisfied.

In the present embodiment, the total width of the first conductive layer 2 lying on the same plane as the non-metal layer 1 satisfies: 0.01W0 and W1 and W0, where W1 is the total width of all the first conductive layers 2 and W0 is the width of the non-metal layer 1. The width of the first conductive layer 2 is determined by the length of the tab 51, and the width of the second conductive layer 3 is the same as the width of the first conductive layer 2.

The thickness of the first conductive layer 2 satisfies: 0.01D0D 1 is less than or equal to D0, wherein D1 is the thickness of the first conductive layer 2 on the same side of the nonmetallic layer 1, and D0 is the thickness of the nonmetallic layer 1; the thickness of the first conductive layer 2 may be sufficient to satisfy the bonding strength of the battery connection member after welding, which may be formulated according to actual needs in the art, and the thickness of the second conductive layer 3 is consistent with the thickness of the first conductive layer 2.

As some preferred embodiments, this example discloses a non-metallic current collector preparing apparatus 4 for preparing the non-metallic current collector through an electrochemical deposition process.

Specifically, referring to fig. 7-9, the nonmetal current collector preparation device 4 disclosed in this embodiment includes a first balance roller 41, a negative electrode roller 42, a positive electrode roller 43, a second balance roller 44, and an electrochemical deposition tank 45, where the first balance roller 41 and the second balance roller 44 are respectively located at two sides of the electrochemical deposition tank 45, the negative electrode roller 42 and the positive electrode roller 43 are rotatably disposed in the electrochemical deposition tank 45 containing electrolyte, the nonmetal layer 1 sequentially passes through the first balance roller 41, the negative electrode roller 42, the positive electrode roller 43, and the second balance roller 44 to be unreeled and wound, the surface of the negative electrode roller 42 is coated with a copper layer, the peripheral surface of the positive electrode roller 43 is coated with at least one conductive strip 431 with a width adapted to the first plating area 12 along the axial direction thereof, the negative electrode roller 42 is connected with the negative electrode of the external circuit, and the positive electrode roller 43 is connected with the positive electrode of the external circuit.

By adopting the above technical scheme, the nonmetallic layer 1 is unwound and sequentially passes through the first balance roller 41, the negative electrode roller 42 and the positive electrode roller 43, the negative electrode roller 42 is connected with the negative electrode of the external circuit, the positive electrode roller 43 is connected with the positive electrode of the external circuit, in the copper sulfate electrolyte, the conductive strip 431 on the positive electrode roller 43 is deposited on the surface of the nonmetallic layer 1 (the first electroplating area 12 or the second electroplating area 14) under the action of the external circuit, and the copper layer can be deposited on the first electroplating area 12 or the second electroplating area 14 through the electrochemical deposition process by controlling the current density and simultaneously controlling the winding speed, so that the first conductive layer 2 or the second conductive layer 3 is formed, and in the embodiment, the thickness of the first conductive layer 2 and the second conductive layer 3 is 1um-5um. Copper on the negative electrode roll 42 will gradually dissolve as the acid content of the solution increases to become copper ions to replenish the copper ions consumed in the electrolyte.

When the nonmetallic current collector is prepared by the nonmetallic current collector preparation device 4, the first electroplating area 12 of the nonmetallic layer 1 is firstly prepared for the first conductive layer 2, and then the second electroplating area 14 of the nonmetallic layer 1 is prepared for the second conductive layer 3 by the same process.

As some examples, the number of conductive strips 431 on the outer peripheral surface of the positive electrode roll 43 is the same as the number of first plating sections 12 arranged along the nonmetallic width. When the first plating section 12 is arranged in a one-step manner, the conductive belt 431 is formed in a ring shape and covers the outer peripheral surface of the positive electrode roller 43. When the first plating sections 12 are arranged in a sectional manner, the conductive strips 431 are arranged in a sectional manner around the outer peripheral surface of the positive electrode roller 43, and the distance between two adjacent conductive strips 431 is matched with the distance between two adjacent sectional first plating sections 12, so that the first plating sections 12 with various structural forms are prepared on the nonmetallic layer 1 through the conductive strips 431.

The utility model also discloses a pole piece 5, referring to fig. 10, by utilizing the nonmetallic current collector, the first blank area 11 and the second blank area 13 on the nonmetallic layer 1 are respectively provided with an active coating 52, and the first conductive layer 2, the second conductive layer 3 and the nonmetallic layer 1 coated between the first conductive layer 2 and the second conductive layer 3 form a pole lug 51 of the pole piece 5. The active coating layer 52 is a prior art, and in this embodiment, the positive electrode sheet 5 or the negative electrode sheet 5 may be distinguished by coating the positive electrode active coating layer 52 or the negative electrode active coating layer 52. The pole piece 5 disclosed in this embodiment directly introduces the pole lug 51 on the non-metal current collector, so that the pole lug 51 and the non-metal current collector are integrated, the bonding strength of the pole lug 51 and the non-metal current collector is improved, and the overcurrent capacity in the charging and discharging processes of the battery can be improved.

The utility model also discloses a battery, which utilizes the pole piece 5. The pole piece 5 can be wound or laminated to form a winding core, and then is put into a shell to form the battery.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (10)

1. A nonmetallic current collector, comprising a nonmetallic layer (1), and a first conductive layer (2) and a second conductive layer (3) which are positioned on two opposite sides of the nonmetallic layer (1) along the thickness direction;

the method is characterized in that: the nonmetallic layer (1) is composed of nonmetallic conductive materials;

the upper surface of the nonmetallic layer (1) is provided with a first blank area (11) and a first electroplating area (12), and the first conductive layer (2) is arranged in the first electroplating area (12);

the lower surface of the nonmetallic layer (1) is provided with a second blank area (13) and a second electroplating area (14), and the second conductive layer (3) is arranged in the second electroplating area (14).

2. The non-metallic current collector of claim 1, wherein: the first blank area (11) and the second blank area (13) are vertically corresponding, and the first electroplating area (12) and the second electroplating area (14) are vertically corresponding.

3. The non-metallic current collector of claim 2, wherein: one or two or more first electroplating areas (12) are arranged along the width direction of the nonmetallic layer (1), and when one first electroplating area (12) is arranged, the first electroplating area is positioned at one side of the nonmetallic layer (1) in the width direction; when two first electroplating areas (12) are arranged, the first electroplating areas are respectively positioned at two sides of the nonmetallic layer (1) in the width direction; when the number of the first plating areas (12) is plural, the plural first plating areas (12) are arranged at equal intervals in the width direction of the nonmetallic layer (1).

4. A nonmetallic current collector as set forth in claim 3, wherein: the first electroplating areas (12) are arranged in a one-section mode, and the first electroplating areas (12) are all arranged along the length direction of the nonmetallic layer (1).

5. A nonmetallic current collector as set forth in claim 3, wherein: the first electroplating areas (12) are arranged in a sectional mode, and a plurality of sectional first electroplating areas (12) are arranged at intervals along the length direction of the nonmetallic layer (1).

6. A nonmetallic current collector as set forth in claim 3, wherein: the total width of the first conductive layer (2) on the same plane of the non-metal layer (1) is as follows: 0.01W0 and W1 and W0, where W1 is the total width of all the first conductive layers (2) and W0 is the width of the non-metal layer (1).

7. A nonmetallic current collector as set forth in claim 3, wherein: the thickness of the first conductive layer (2) satisfies: 0.01D0D 1 is less than or equal to D0, wherein D1 is the thickness of the first conductive layer (2) on the same side of the nonmetallic layer (1), and D0 is the thickness of the nonmetallic layer (1); the thickness of the second conductive layer (3) is satisfied.

8. A nonmetallic current collector preparation device according to any one of claims 1 to 7, wherein the nonmetallic current collector preparation device (4) comprises a first balance roller (41), a negative electrode roller (42), a positive electrode roller (43), a second plate Heng Gun (44) and an electrochemical deposition groove (45), the first balance roller (41) and the second plate Heng Gun (44) are respectively positioned at two sides of the electrochemical deposition groove (45), the negative electrode roller (42) and the positive electrode roller (43) are rotatably arranged in the electrochemical deposition groove (45) containing electrolyte, the nonmetallic layer (1) is sequentially unreeled and rolled through the first balance roller (41), the negative electrode roller (42), the positive electrode roller (43) and the second balance roller (44), the surface of the negative electrode roller (42) is coated with a copper layer, the positive electrode roller (43) is coated with at least one conductive strip (431) with the width matched with the first electroplating area (12) along the axial direction, the negative electrode roller (42) and the negative electrode roller (43) are connected with an external circuit (43).

9. A pole piece utilizing a non-metallic current collector as defined in any one of claims 1 to 7, characterized in that: the first blank area (11) and the second blank area (13) on the nonmetallic layer (1) are respectively provided with an active coating (52), and the first conductive layer (2), the second conductive layer (3) and the nonmetallic layer (1) coated between the first conductive layer (2) and the second conductive layer (3) form a lug (51) of the pole piece (5).

10. A battery, characterized in that: use of a pole piece (5) according to claim 9.

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