CN208655792U

CN208655792U - Electrode slice, battery and battery

Info

Publication number: CN208655792U
Application number: CN201820228680.6U
Authority: CN
Inventors: 余玉英
Original assignee: Shenzhen Qianhai Tolerant Technology Co Ltd
Current assignee: Shenzhen Qianhai Tolerant Technology Co Ltd
Priority date: 2018-02-07
Filing date: 2018-02-07
Publication date: 2019-03-26
Anticipated expiration: 2028-02-07

Abstract

This application discloses a kind of electrode slice, battery and batteries, the electrode slice includes membrane layer and the conductive layer that is arranged on the membrane layer, the membrane layer is equipped with multiple through-holes, the conductive layer includes conduction region and blank area, and at least partly blank area and the through-hole of the conductive layer are correspondingly arranged.The application can eliminate copper foil or aluminium foil in the prior art using separation layer and conductive layer, and then reduce cost.

Description

Electrode slice, battery and battery

Technical field

This application involves the technical field of battery, it is related to a kind of electrode slice, battery and battery.

Background technique

Current battery includes the membrane layer stacked gradually, negative electrode tab, membrane layer and positive plate, the collector of negative electrode tab Copper foil is generallyd use, the collector of positive plate generallys use aluminium foil.Due to copper foil or the heavier-weight of aluminium foil, lead to battery Energy density is low, at high cost.

Utility model content

In order to solve the above problem existing for the battery of the prior art, the application provides a kind of electrode slice, battery and electricity Pond.

In order to solve the above technical problems, the application also provides a kind of electrode slice comprising membrane layer and setting it is described every Conductive layer in film layer, the membrane layer are equipped with multiple through-holes, and the conductive layer includes conduction region and blank area, the conductive layer At least partly blank area be correspondingly arranged with the through-hole.

In order to solve the above technical problems, the application also provides a kind of battery comprising positive plate, negative electrode tab and shell, The positive plate being stacked and the negative electrode tab are arranged in the shell, the positive plate and the negative electrode tab at least one Person is above-mentioned electrode slice.

In order to solve the above technical problems, the application also provides a kind of battery comprising protection circuit plate and above-mentioned battery, The protection circuit plate is connected with the battery, for protecting the battery.

Compared with prior art, the application electrode slice includes membrane layer and the conductive layer that is arranged on the membrane layer, institute Membrane layer is stated equipped with multiple through-holes, the conductive layer includes conduction region and blank area, at least partly blank area of the conductive layer It is correspondingly arranged with the through-hole, the application can eliminate copper foil or aluminium in the prior art using separation layer and conductive layer Foil, and then cost is reduced, and the weight of electrode slice can be reduced and reduce the thickness of electrode slice, and then can be improved battery Energy density.

Detailed description of the invention

In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, below will be to institute in embodiment Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the application Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings Obtain other attached drawings.

Fig. 1 is the schematic cross-section of the application first embodiment electrode slice；

Fig. 2 is the schematic cross-section of the application second embodiment electrode slice；

Fig. 3 is the schematic top plan view of conductive layer in Fig. 2；

Fig. 4 is the schematic top plan view that conductive layer is not orthogonal to second direction in a first direction in Fig. 2；

Fig. 5 is the schematic top plan view of the application 3rd embodiment conductive layer；

Fig. 6 is the schematic top plan view of the application fourth embodiment electrode slice；

Fig. 7 is the structural schematic diagram of the battery of the application first embodiment；

Fig. 8 is schematic cross-section of the battery in Fig. 7 along I-I '；

Fig. 9 is the structural schematic diagram of the battery of the application first embodiment.

Specific embodiment

With reference to the accompanying drawings and examples, the application is described in further detail.It is emphasized that following implement Example is merely to illustrate the application, but is not defined to scope of the present application.Likewise, following embodiment is only the portion of the application Point embodiment and not all embodiments, institute obtained by those of ordinary skill in the art without making creative efforts There are other embodiments, shall fall in the protection scope of this application.

The description and claims of this application and term " first ", " second ", " third " " in above-mentioned attached drawing The (if present)s such as four " are to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should manage The data that solution uses in this way are interchangeable under appropriate circumstances, so that embodiments herein described herein for example can be to remove Sequence other than those of illustrating or describe herein is implemented.In addition, term " includes " and " having " and theirs is any Deformation, it is intended that cover it is non-exclusive include, for example, containing the process, method of a series of steps or units, system, production Product or equipment those of are not necessarily limited to be clearly listed step or unit, but may include be not clearly listed or for this A little process, methods, the other step or units of product or equipment inherently.

Shown in Figure 1, Fig. 1 is the schematic cross-section of the application first embodiment electrode slice.Disclosed in the present embodiment Electrode slice 10 include membrane layer 11 and the conductive layer 12 that is arranged on membrane layer 11, membrane layer 11 is provided with multiple through-holes 111, Conductive layer 12 includes conduction region 121 and blank area 122, the wherein at least partly blank area 122 of conductive layer 12 and membrane layer 11 Through-hole 111 is correspondingly arranged.

Wherein, the material of the membrane layer 11 includes polypropylene, polyethylene, polytetrafluoroethylene (PTFE), polyamide, polyvinyl chloride, gathers One of ethylene glycol terephthalate or Kapton are a variety of compound.Such as membrane layer 11 can for diaphragm paper or The material of person's membrane layer 11 can be that the material of polypropylene or membrane layer 11 can be that polypropylene and polyethylene are compound.

The electrode slice 10 of the present embodiment be applied to battery, wherein the electronics of battery along conductive layer 12 conduction region 121 into Row transmission.Since at least partly blank area 122 of conductive layer 12 is correspondingly arranged with through-hole 111, the ion of battery can lead to Cross through-hole 111 and blank area 122.

The conductive layer 12 of the present embodiment electrode slice 10 is arranged on membrane layer 11, at least partly blank area of conductive layer 12 122 are correspondingly arranged with the through-hole 111 of membrane layer 11, can eliminate copper in the prior art using membrane layer 11 and conductive layer 12 Foil or aluminium foil, and then cost is reduced, and the weight of electrode slice 10 can be reduced and reduce the thickness of electrode slice 10, Jin Erneng Enough improve the energy density of battery.

The application further provides for the electrode slice of second embodiment, in the base of the revealed electrode slice 10 of first embodiment It is described on plinth.As shown in Fig. 2, the revealed electrode slice 10 of the present embodiment further includes active layer 13, the setting of active layer 13 exists Side of the conductive layer 12 far from membrane layer 11.

Wherein, the active material of the active layer 13 may include metallic compound containing lithium or can embedding lithium metal compound Object, such as lithium and cobalt oxides, lithium manganese oxide, Li, Ni, Mn oxide, lithium-nickel-manganese-cobalt oxide, lithium iron phosphate or lithium manganese phosphate Deng.

Wherein, the material of the conductive layer 12 includes one of copper, nickel, titanium, tin, zinc, iron, gold or silver or a variety of compound Alloy.Such as the material of conductive layer 12 can be with the alloy of copper and mickel for the material of copper or tin or conductive layer 12.

The thickness of the conductive layer 12 of the present embodiment can be 0.001-10 μm, such as conductive layer 12 thickness can for 0.01 μm, 0.05 μm, 0.1 μm or 1 μm.

As shown in figure 3, the conduction region 121 of conductive layer 12 includes 123 He of the first metal wire of D1 setting along a first direction Along the second metal wire 124 that second direction D2 is arranged, wherein first direction D1 and second direction D2 intersection setting, to form net Shape pattern；Wherein first direction D1 is perpendicular to second direction D2.Therefore, the conduction region 121 of conductive layer 12 forms mesh pattern.

Wherein, the white space shape between two adjacent the first metal wires 123 and two adjacent the second metal wires 124 At the blank area 122 of conductive layer 12.

When D1 is not orthogonal to second direction D2 in a first direction, as shown in Figure 4.Wherein, the first metal wire 123 and the second gold medal The angle belonged between line 124 is acute angle or obtuse angle.

The conduction region 121 of the present embodiment conductive layer 12 is mesh pattern, can reduce the face that conductive layer 12 covers through-hole 111 Product improves conductivity.

The application provides the electrode slice of 3rd embodiment, exists with the difference of the revealed electrode slice of second embodiment In: as shown in figure 5, the fringe region of membrane layer, the sky of conductive layer 22 is arranged in the conduction region 221 of the conductive layer 22 of the present embodiment The central area of separation layer is arranged in white area 222.

The application provides the electrode slice of fourth embodiment, carries out on the basis of first embodiment revealed electrode slice Description.As shown in fig. 6, electrode slice 10 further comprises tab 14, tab 14 is arranged on membrane layer 11, tab 14 and conductive layer 12 connections.

The application provides the battery of first embodiment, refers to shown in Fig. 7-8, Fig. 7 is the application first embodiment The structural schematic diagram of battery；Fig. 8 is schematic cross-section of the battery in Fig. 7 along I-I '.Wherein, battery 60 includes anode Piece 61, negative electrode tab 62 and shell 63, the positive plate 61 being stacked and the setting of negative electrode tab 62 are formed by accommodating sky in shell 63 Between in 64, at least one of positive plate 61 and negative electrode tab 62 are the revealed electrode slice 10 of above-described embodiment, and details are not described herein.

Wherein, it is additionally provided with positive pole ear 611 on positive plate 61, is equally also equipped with negative lug 621 in negative electrode tab 62, Battery 60 completes charge and discharge process by positive pole ear 611 and negative lug 621.Positive pole ear 611 can be above-described embodiment Revealed tab 13, negative lug 621 can be the revealed tab 13 of above-described embodiment, and details are not described herein.

Battery 60 also needs to inject electrolyte in accommodating space 64, so that positive plate 61 and negative electrode tab 62 are immersed in In electrolyte, electrolyte is used for so that positive plate 61 and negative electrode tab 62 carry out charge transmission by electrolyte, and then realize battery Core 60 carries out charge and discharge.Wherein electrolyte is generally by the organic solvent of high-purity, electrolyte lithium salt (lithium hexafluoro phosphate), additive Equal raw materials are formulated by a certain percentage under certain condition.

The application provides the battery of first embodiment, as shown in figure 9, the revealed battery 80 of the present embodiment includes protection electricity Road plate 81 and battery 82, protection circuit plate 81 are connect with battery 82, and protection circuit plate 81 is for protecting battery 82, battery Core 82 is the revealed battery of above-described embodiment, and details are not described herein.

In conclusion the conductive layer 12 of the electrode slice 10 of the application is arranged on membrane layer 11, at least portion of conductive layer 12 Point blank area 122 is correspondingly arranged with through-hole 111, can eliminate copper foil in the prior art using membrane layer 11 and conductive layer 12 Or aluminium foil, and then cost is reduced, and the weight of electrode slice 10 can be reduced and reduce the thickness of electrode slice 10, and then can Improve the energy density of battery.

It should be noted that the above various embodiments belongs to same utility model design, the description of each embodiment respectively has side Weight, not detailed place is described in separate embodiment, can refer to the description in other embodiments.

Protection circuit and control system provided by the embodiment of the present application are described in detail above, it is used herein The principle and implementation of this application are described for specific case, and the above embodiments are only used to help understand The present processes and its core concept；At the same time, for those skilled in the art is having according to the thought of the application There will be changes in body embodiment and application range, in conclusion the content of the present specification should not be construed as to the application Limitation.

Claims

1. a kind of electrode slice, which is characterized in that the electrode slice includes membrane layer and the conductive layer that is arranged on the membrane layer, The membrane layer is equipped with multiple through-holes, and the conductive layer includes conduction region and blank area, the conductive layer it is at least partly described Blank area is correspondingly arranged with the through-hole.

2. according to electrode slice described in claim 1, which is characterized in that the electrode slice further includes the work of setting above the conductive layer Side of the conductive layer far from separation layer is arranged in property layer, the active layer.

3. electrode slice according to claim 1, which is characterized in that the conduction region of the conductive layer includes along a first direction The first metal wire being arranged and the second metal wire being arranged along second direction, the first direction and second direction intersection Setting forms mesh pattern.

4. electrode slice according to claim 1, which is characterized in that the conduction region of the conductive layer is arranged in the membrane layer The blank area of fringe region, the conductive layer is arranged in the membrane layer central area.

5. electrode slice according to claim 1, which is characterized in that the material of the conductive layer include copper, nickel, titanium, tin, One of zinc, iron, gold or silver or a variety of compound alloys.

6. electrode slice according to claim 1, which is characterized in that the conductive layer with a thickness of 0.001-10 μm；Battery Electronics transmitted along the conductive layer, the ion of the battery passes through the through-hole and the blank area.

7. electrode slice according to claim 1, which is characterized in that the electrode slice includes tab, and the tab setting exists On the membrane layer, and it is connect with the conductive layer.

8. a kind of battery, which is characterized in that the battery includes positive plate, negative electrode tab and shell, and what is be stacked is described Positive plate and the negative electrode tab are arranged in the shell, the positive plate and the negative electrode tab at least one be such as claim The electrode slice of 1-7 any one.

9. battery according to claim 8, which is characterized in that the battery further comprises electrolyte, described outer The accommodating space of shell injects the electrolyte, and the positive plate and the negative electrode tab are immersed in the electrolyte.

10. a kind of battery, which is characterized in that the battery includes protection circuit plate and the electricity such as claim 8-9 any one Chi Xin, the protection circuit plate are connected with the battery, for protecting the battery.