CN208433472U - Battery, battery battery core and collector - Google Patents
Battery, battery battery core and collector Download PDFInfo
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- CN208433472U CN208433472U CN201820248791.3U CN201820248791U CN208433472U CN 208433472 U CN208433472 U CN 208433472U CN 201820248791 U CN201820248791 U CN 201820248791U CN 208433472 U CN208433472 U CN 208433472U
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- basement membrane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
This application discloses a kind of battery, battery battery core and collectors, the collector includes basement membrane, the first metal layer and second metal layer for being separately positioned on the basement membrane two sides, the basement membrane includes first area and second area, the basement membrane of the second area is provided with through-hole, the first metal layer is connected with the second metal layer by the through-hole.The application enables to the current density of the first metal layer and second metal layer balanced.
Description
Technical field
This application involves the technical field of battery, it is related to a kind of battery, battery battery core and collector.
Background technique
Collector is used to collect in the electric current that the active material of battery generates, to form current versus output.It is existing
Collector be generally copper foil or aluminium foil, such collector is generally heavier.The inventors of the present invention discovered through researches that according in base
The collector of metal cladding then can substantially mitigate afflux body weight on film, and such collector includes basement membrane and is set to basement membrane two sides
Conductive layer, wherein the basement membrane is made of light materials such as polyethylene, however such material production the general conductivity of basement membrane
It is low, cause the current density of the metal layer positioned at basement membrane two sides unbalanced.
Utility model content
In order to solve the above problem existing for the collector of the prior art, the application provide a kind of battery, battery battery core and
Collector.
In order to solve the above technical problems, the application also provides a kind of collector comprising basement membrane is separately positioned on the base
The first metal layer and second metal layer of film two sides, the basement membrane include first area and second area, are located at described second
The basement membrane in region is provided with through-hole, and the first metal layer is connected with the second metal layer by the through-hole.
In order to solve the above technical problems, the application also provides a kind of battery battery core comprising positive plate, negative electrode tab, diaphragm
Layer and shell, the positive plate, the membrane layer and the negative electrode tab be stacked in the shell, the positive plate and/
Or the negative electrode tab includes above-mentioned collector and the active layer that is arranged on the collector.
In order to solve the above technical problems, the application also provides a kind of battery, including above-mentioned battery battery core and protection circuit plate,
The protection circuit plate is connected with the battery battery core, for protecting the battery battery core.
Compared with prior art, the application collector includes basement membrane, the first metal for being separately positioned on the basement membrane two sides
Layer and second metal layer, the basement membrane include first area and second area, and the basement membrane positioned at the second area is provided with
Through-hole, the first metal layer and the second metal layer are connected by the through-hole, enable to the first metal layer and second
The current density of metal layer is balanced.
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 collector；
Fig. 2 is the schematic cross-section of the collector of the application second embodiment；
Fig. 3 is the schematic cross-section of the first metal layer in Fig. 2；
Fig. 4 is the schematic cross-section of the metal film layer of the application 3rd embodiment；
Fig. 5 is that the material of metal film layer in Fig. 4 includes the schematic cross-section of copper and mickel；
Fig. 6 is that the first metal layer of the application fourth embodiment is netted schematic top plan view；
Fig. 7 is that the metal film layer of the 5th embodiment of the application is the schematic top plan view of strip；
Fig. 8 is the schematic top plan view of the metal film layer of the application sixth embodiment；
Fig. 9 is the schematic top plan view of the metal film layer of the 7th embodiment of the application；
Figure 10 is the schematic top plan view of the metal film layer of the 8th embodiment of the application；
Figure 11 is that the shape of multiple non-metallic areas in Figure 10 is to bend the schematic top plan view of font；
Figure 12 is the schematic top plan view of the metal film layer of the 9th embodiment of the application；
Figure 13 is that metal film layer is arranged in epilamellar schematic top plan view in Figure 12；
Figure 14 is the schematic top plan view of the metal film layer of the tenth embodiment of the application；
Figure 15 is the schematic cross-section of the 11st embodiment collector of the application；
Figure 16 is the schematic top plan view of the 13rd embodiment basement membrane of the application；
Figure 17 is the schematic top plan view of the 14th embodiment basement membrane of the application；
Figure 18 is the schematic cross-section of the 16th embodiment collector of the application；
Figure 19 is the schematic cross-section of the 17th embodiment collector of the application；
Figure 20 is the schematic cross-section of the 18th embodiment collector of the application；
Figure 21 is the expansion top view that the first metal layer is connected with second metal layer by tab in Figure 20；
Figure 22 is the expansion top view that the first metal layer is connected with second metal layer by tab in Figure 20；
Figure 23 is the schematic cross-section of the 19th embodiment collector of the application；
Figure 24 is the schematic cross-section that multiple collectors are connected with tab in Figure 23；
Figure 25 is the schematic cross-section of the 20th embodiment basement membrane of the application；
Figure 26 is the schematic cross-section of the 20th embodiment collector of the application；
Figure 27 is the schematic top plan view of the 21st embodiment basement membrane of the application；
Figure 28 is the schematic cross-section of the 21st embodiment collector of the application；
Figure 29 is the schematic cross-section of the 22nd embodiment collector of the application setting groove；
Figure 30 is the schematic cross-section of the 22nd embodiment collector of the application；
Figure 31 is the flow diagram of the preparation method of collector in Figure 29；
Figure 32 is the flow diagram of the preparation method of the collector of the application first embodiment；
Figure 33 is the structural schematic diagram of the battery battery core of the application first embodiment；
Figure 34 is schematic cross-section of the battery battery core in Figure 33 along I-I '；
Figure 35 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 collector.Disclosed in the present embodiment
Collector 10 include at least basement membrane 11 and the first metal layer 12, the first metal layer 12 be arranged on basement membrane 11, wherein the first gold medal
Belonging to layer 12 can be set on the first surface 111 of basement membrane 11.In other embodiments, the first metal layer 12 can be set in base
On the second surface 112 of film 11.
The basement membrane 11 of the present embodiment is the composite membrane of organic material, and the composite membrane of the organic material can be PE
(Polyethylene, polyethylene) and PET (Polyethylene Terephthalate, polyethylene terephthalate) with
And composite membrane, the composite membrane of PE and PP or the composite membrane of PP and PET of PP (Polypropylene, polypropylene).Wherein, have
The composite membrane of machine material is compound using the progress of solvent-free glue by two or more organic material, such as PE and PP logical
It crosses solvent-free glue and carries out the composite membrane for being compounded to form PE and PP.In other embodiments, the composite membrane of organic material can be with
For composite membrane, the PI of PVC (Polyvinyl chloride, polyvinyl chloride) and PP, (Polyimide Film, polyimides are thin
Film) and PP composite membrane, the composite membrane of PI and PE or the composite membrane of PVC and PE.
Wherein, the thickness of basement membrane 11 can be 1-100 μm, such as the thickness of basement membrane 11 can be 5 μm or 3 μm.First metal
Layer 12 thickness can be 0.001-10 μm, such as the first metal layer 12 with a thickness of 0.05 μm, 0.1 μm or 0.5 μm.
Wherein, can be set on the first surface 111 of basement membrane 11 can be with for the first metal layer 12 are as follows: by the first metal layer 12
Material the first metal layer 12 is made, by the first metal layer 12 by fitting etc. modes be arranged on first surface 111.
Wherein, can be set on the first surface 111 of basement membrane 11 can be with for the first metal layer 12 are as follows: in vacuum state
Under, by the material of the first metal layer 12 by being deposited onto the first surface 111 of basement membrane 11, in the first surface of basement membrane 11
111 form the first metal layer 12.In other embodiments, by modes such as spraying plating, sputter, plating or coatings in first surface
The first metal layer 12 is set on 111.
The basement membrane 11 of the present embodiment is the composite membrane of organic material, can be improved collector 10 stretching is slight and toughness,
Improve the production efficiency of battery pole piece；In addition, the basement membrane 11 of collector 10 is the composite membrane of organic material, collector can be reduced
10 weight and the thickness for reducing collector 10, and then can be improved the energy density of battery, the power of collector 10 is reduced, and
And reduce cost；In addition, the resistance of the composite membrane of organic material is higher, battery temperature is avoided quickly to increase, battery can be improved
Security performance.
The application provides the collector of second embodiment, is retouched on the basis of collector 10 of first embodiment
It states, as shown in Fig. 2, the revealed the first metal layer 12 of the present embodiment may include at least one layer of metal film layer 121.Such as the
One metal layer 12 may include one layer, two layers or three-layer metal film layer 121, it is to be understood that when the first metal layer 12 only wraps
When containing one layer of metal film layer 121, metal film layer 121 is the first metal layer 12, specifically, the thickness of metal film layer 121,
Each element such as each element such as material or shape i.e. thickness, material or the shape of the first metal layer 12.
Wherein, every layer of metal film layer 121 with a thickness of 0.001-5 μm, such as the thickness of every layer of metal film layer 121 can
It is 0.05 μm, 0.1 μm, 0.2 μm or 1 μm.
The material of every layer of metal film layer 121 can be one of copper, nickel, titanium, tin, zinc, iron, gold or silver or at least two
Compound alloy, such as the material of every layer of metal film layer 121 can be copper or copper and mickel alloy.
The present embodiment adjusts the sheet resistance of the first metal layer 12 by the material of setting metal film layer 121, to control first
The sheet resistance of metal layer 12 is in preset range, such as 0.001-10 Ω/m.
When the first metal layer 12 includes multiple layer metal film layer 121, the material of every layer of metal film layer 121 can phase
Together, such as the material of every layer of metal film layer 121 is copper.
When the first metal layer 12 includes multiple layer metal film layer 121, the material of every layer of metal film layer 121 can not phase
Together, as shown in figure 3, the first metal layer 12 includes the metal film layer 121,122 and 123 for being successively set on first surface 111,
Wherein metal film layer 121 can be copper film layer；Metal film layer 122 can be nickel film layer；Metal film layer 123 can be thin for tin
Film layer.Alternatively, metal film layer 121 can be tin thin film layer；Metal film layer 122 can be copper film layer；Metal film layer 123 can
For nickel film layer.
Wherein, it can be used as bonding force enhancement layer close to the metal film layer 121 of first surface 111, metal film layer 121 is used
In preventing the first metal layer 12 from falling off.
The present embodiment is illustrated so that the first metal layer 12 includes three-layer metal film layer 121 as an example, in other embodiments
In, the metal film layer 121 that the first metal layer 12 includes other numbers of plies, such as 5 layers can also be arranged in those skilled in the art
Or 8 layers.
The first metal layer 12 of the present embodiment includes at least one layer of metal film layer 121, by the way that metal film layer 121 is arranged
Material and/or the number of plies, to adjust the conductivity of the first metal layer 12.
The application provides the collector of 3rd embodiment, exists with the difference of the revealed collector of second embodiment
In, the present embodiment is described with metal film layer 121, as shown in figure 4, metal film layer 121 is divided into multiple regions 1211,
The material in each region 1211 can be one of copper, nickel, titanium, tin, zinc, iron, gold or silver or at least two compound alloys,
To form multiple material combination.
Material with metal film layer 121 includes that copper and mickel is illustrated.As shown in figure 5, metal film layer 121 includes extremely
A few first area 1212 and at least one second area 1213, first area 1212 and second area 1213 are disposed adjacent,
The material of first area 1212 is different from the material of second area 1213, for example, first area 1212 material can be copper, second
The material in region 1213 can be nickel, therefore being arranged in a combination with cupro-nickel of metal film layer 121.
In other embodiments, the material of metal film layer 121 can also be copper, nickel, titanium, tin, zinc, iron, gold, silver or conjunction
At least two materials in gold, alloy are at least two compound, at least two materials in copper, nickel, titanium, tin, zinc, iron, gold or silver
Material can use different permutation and combination, such as metal film layer 121 being arranged in a combination with cupro-nickel titanium or titanium ambrose alloy.
Wherein, the material of other metal film layers can be identical as the material of metal film layer 121 of the present embodiment.At it
In his embodiment, the material of other metal film layers can be not identical as the material of the metal film layer 121 of the present embodiment.
The metal film layer 121 of the present embodiment is divided into multiple regions 1211, the material in each region 1211 can for copper,
One of nickel, titanium, tin, zinc, iron, gold or silver or at least two compound alloys, can adjust the conduction of the first metal layer 12
Rate.
The application provides the collector of fourth embodiment, carries out on the basis of second embodiment revealed collector
Description.The present embodiment is described with the first metal layer 12: as shown in fig. 6, including along a first direction in the first metal layer 12
The first metal area 141 being arranged and the second metal area 142 being arranged along second direction, the first metal area 141 and the second metal
The intersection setting of area 142, to form mesh pattern, i.e. the pattern of the first metal layer 12 is mesh pattern.The material of first metal area 141
The material of material and the second metal area 142 can be that one of copper, nickel, titanium, tin, zinc, iron, gold or silver or at least two are compound
Alloy.
Wherein, the first metal area 141 and the second metal area 142 are vertically arranged, and the first metal area 141 and the second metal
Area 142 is connected in intersection.The width of the width of first metal area 141 and the second metal area 142 can be equal；In other embodiments
In, the width of the width of the first metal area 141 and the second metal area 142 is set as unequal, and the first metal area 141 and
The angle of two metal areas, 142 intersection can be obtuse angle or acute angle.
The pattern of the first metal layer 12 of the present embodiment is mesh pattern, can reduce the material of the first metal layer 12, is dropped
Low cost, and reduce the weight of the first metal layer 12.
The application provides the collector of the 5th embodiment, exists with the revealed collector difference of fourth embodiment
In: as shown in fig. 7, the revealed metal film layer 121 of the present embodiment includes multiple spaced first metal areas 143, it is more
A first metal area 143 is arranged in parallel, and to form strip pattern, the first metal area 143 may be configured as rectangle.First gold medal
The material for belonging to area 143 can be one of copper, nickel, titanium, tin, zinc, iron, gold or silver or at least two compound alloys.
Wherein, metal film layer 121 further includes the first connecting line 144, and multiple first metal areas 143 pass through the first connecting line
144 link together.
The pattern of the metal film layer 121 of the present embodiment can be strip or threadiness, can reduce cost, and reduce by the
The weight of one metal layer 12.
The application provides the collector of sixth embodiment, exists with the revealed collector difference of fourth embodiment
In: as shown in figure 8, the metal film layer 121 of the present embodiment includes multiple spaced metal areas 145, multiple metal areas 145
In streamline shape, one end of multiple metal areas 145 is connect with the tab of battery 16.
The material of each metal area 145 can be that one of copper, nickel, titanium, tin, zinc, iron, gold or silver or at least two are compound
Alloy.
Compared with prior art, the metal film layer 121 of the present embodiment includes multiple spaced metal areas 145,
It is the white space of metal film layer 121 between two adjacent metal areas 145, reduces material, can reduce cost, and drop
The weight of low the first metal layer 12.
The application provides the collector of the 7th embodiment, exists with the revealed collector difference of sixth embodiment
In: as shown in figure 9, the metal film layer 121 of the present embodiment includes multiple spaced metal areas 145 and connecting line 146, connect
One end of each metal area 145 is arranged in wiring 146, and multiple metal areas 145 are connected by the tab 16 of connecting line 146 and battery
It connects, it is to be understood that in other embodiments, the position of connecting line 146 can be adjusted according to the actual situation, need to only connect each gold
Belong to area 145, and is connected with tab 16.
Compared with prior art, the metal film layer 121 of the present embodiment includes multiple spaced metal areas 145,
Between two adjacent metal areas 145 it is the white space of metal film layer 121, therefore reduces material, reduces cost.
The application provides the collector of the 8th embodiment, exists with the revealed collector difference of fourth embodiment
In: as shown in Figure 10, metal film layer 121 includes at least one metal area 148, is provided between adjacent metal area 148
At least one non-metallic areas 147, the material of metal area 148 can for one of copper, nickel, titanium, tin, zinc, iron, gold or silver or at least
Two kinds of compound alloys；Non-metallic areas 147 can be the white space of not set metal, or can set in non-metallic areas 147
Set nonmetallic, which can be PP, PET, PE, PVC or PI.
At least one non-metallic areas 147 can be multiple non-metallic areas 147, and multiple intervals of non-metallic areas 147 are arranged, and every
The shape of a non-metallic areas 147 can be rectangle, as shown in Figure 10.In other embodiments, non-metallic areas 147 can also be arranged
Shape for other shapes, such as non-metallic areas 147 is the shapes such as round or square.
In addition, multiple non-metallic areas 147 can be sequentially connected, as shown in figure 11, the shape of multiple non-metallic areas 147 can be
Bend font.In other embodiments, the shape of multiple non-metallic areas 147 can be set to I-shaped, diamond shape, T-shaped or L word
The shapes such as shape.
The present embodiment is provided at least one non-metallic areas 147 between adjacent metal area 148, and non-metallic areas 147 is
White space or setting are nonmetallic, therefore reduce material, low cost.
The application provides the collector of the 9th embodiment, exists with the revealed collector difference of the 8th embodiment
In: as shown in figure 12, the metal film layer 121 of the present embodiment includes multiple gold
PACN1724867 belongs to area 140, and multiple metal areas 140 may include specifically the first metal area 1401, multiple second metals
Area 1402 and multiple third metal areas 1403.Wherein, the setting of multiple intervals of second metal area 1402, the first metal area 1401 are set
It sets in the side of multiple second metal areas 1402, multiple third metal areas 1403 are set with multiple second metal areas 1402 one-to-one correspondence
It sets, each second metal area 1402 is connect by corresponding third metal area 1403 with the first metal area 1401, so that multiple
Second metal area 1402 is connect by third metal area 1403 with the first metal area 1401.
Second metal area 1402 and the first metal area 1401 are linked together by relatively narrow third metal area 1403, in turn
Third metal area 1403 is capable of forming local high resistance, and for preventing, electric current is excessive and leads to battery thermal failure.
As shown in figure 13, Figure 13 is that metal film layer is arranged in epilamellar schematic top plan view in Figure 12, wherein the first gold medal
Belonging to the distance between the edge of area 1401 and basement membrane 11 d1 can be 0-10mm, such as d1 is 3mm；Second metal area 1402 and basement membrane
The distance between 11 edge d2 can be 0-10mm, such as d2 is 3mm；Between first metal area 1401 and the second metal area 1402
Distance d3 can be 0.1mm-2mm, such as d3 be 1mm.
Wherein, the area of the second metal area 1402 can be greater than the area of the first metal area 1401, the first metal area 1401
Area can be greater than third metal area 1403 area.
The second metal area 1402 and the first metal area 1401 of this implementation are connected to by relatively narrow third metal area 1403
Together, and then third metal area 1403 is capable of forming local high resistance, prevents electric current excessive and leads to battery thermal failure.
The application provides the collector of the tenth embodiment, exists with the revealed collector difference of the 9th embodiment
In: as shown in figure 14, the metal film layer 121 of the present embodiment includes multiple metal areas 247 and connecting line 248.
Wherein, multiple metal areas 247 include the first metal area 2471, multiple second metal areas 2472 and multiple third metals
Area 2473, the setting of multiple intervals of second metal area 2472, two adjacent the second metal areas 2472 are connected by connecting line 248,
Second metal area 2472 is connect by corresponding third metal area 2473 with the first metal area 2471.Wherein, multiple second metals
The shape in area 2472 can be rectangle.In other embodiments, the shape of the second metal area 2472 may be configured as other shapes, example
As the second metal area 2472 is shaped to the shape of L shape or T shape.
The present embodiment forms blank area in adjacent two the second metal areas 2472, can reduce cost, and reduces by the
The weight of one metal layer 12.
The application provides the collector of the 11st embodiment, exists with the revealed collector difference of first embodiment
In: as shown in figure 15, the revealed collector 20 of the present embodiment includes basement membrane 21 and the first metal layer 22, and the first metal layer 22 is set
It sets in the side of basement membrane 21.Wherein, the first metal layer 22 includes at least one first area 221 and at least one second area
222, the thickness of first area 221 is greater than the thickness of second area 222, and multiple first areas 221 and multiple second areas 222 can
To be intervally installed.
Thickness relative to the revealed the first metal layer 12 of first embodiment is integrally identical, first metal of the present embodiment
The thickness of the second area 222 of layer 22 is less than the first area 221 of the first metal layer 22, that is, reduces 22 part of the first metal layer
The material in region, to reduce cost.
The application provides the collector of the 12nd embodiment, exists with the revealed collector difference of first embodiment
In: as shown in Figure 1, concretely non-woven fabrics, the material of the non-woven fabrics may include metal material to the revealed basement membrane 11 of the present embodiment
Material, the metal material can be one of copper, nickel, titanium, tin, zinc, iron, gold or silver or at least two compound alloys.Wherein,
The material of non-woven fabrics can also include nonmetallic materials, and nonmetallic materials can be PP, PET, PE, PVC, PI, nylon, inorganic material
One or more of material, aluminium oxide, magnesia, aluminium hydroxide, the mixture of silica and graphite or carbon fiber.
The manufacturing process of non-woven fabrics specifically: by least one metal material (or at least one metal material and Fei Jin
Belong to material) lapping is carried out, such as PP and copper are subjected to lapping；Then (or at least at least one metal material after lapping
A kind of metal material and nonmetallic materials) reinforced, i.e., to after lapping PP and copper wire reinforce；To after reinforcing at least
A kind of metal material (or at least one metal material and nonmetallic materials) carries out compound and cutting, i.e., to after reinforcing PP and
Copper carries out compound and cutting.Wherein, the concrete technology of non-woven fabrics may include spun lacing, heat seal, wet process, spunbond or melt-blown.
The basement membrane 11 of copper foil or aluminium foil compared with the existing technology, the present embodiment can be non-woven fabrics, can be improved afflux
The stretching of body is slight and toughness, improves the production efficiency of battery pole piece；The weight of collector can be reduced and reduce collector
Thickness, and then can be improved the energy density of battery, the power of collector is reduced, and reduce cost.
The application provides the collector of the 13rd embodiment, exists with the revealed collector difference of first embodiment
In: the revealed basement membrane 31 of the present embodiment can be braided fabric, which includes a plurality of metal of D1 setting along a first direction
Line 311 and a plurality of non-metal wire 312 being arranged along second direction D2, wherein metal wire 311 and the intersection of non-metal wire 312 are set
It sets, as shown in figure 16.Wherein, the material of metal wire 311 can for one of copper, nickel, titanium, tin, zinc, iron, gold or silver or extremely
Few two kinds compound；The material of non-metal wire 312 can be PP, PET, PE, PVC, PI, nylon, inorganic material, aluminium oxide, oxidation
Magnesium, aluminium hydroxide, silica and graphite mixture or carbon nanotube.
Wherein, first direction D1 and second direction D2 is vertically arranged, i.e., metal wire 311 is vertically arranged with non-metal wire 312.
In other embodiments, the angle between first direction D1 and second direction D2 can be set to other angles, such as first party
It is 60 ° or 120 ° to the angle between D1 and second direction D2.
Copper foil or aluminium foil compared with the existing technology, the revealed collector of the present embodiment include basement membrane 31, basement membrane 31
It can be braided fabric, can reduce the thickness and weight of collector, reduce cost.Further, since a plurality of metal wire 311 is along
One direction D1 setting, therefore it is conductive that orientation may be implemented.
It is understood that in other embodiments, as shown in figure 16, basement membrane 31 further includes at least one connecting line 313,
The material of connecting line 313 can be one of copper, nickel, titanium, tin, zinc, iron, gold or silver or at least two compound, connecting lines 313
To connect each metal wire 311.At this point, collector can only include basement membrane 31, and pass through the metal wire 311 and connecting line of basement membrane 31
313 carry out electric current transmission, without metal layer is arranged on basement membrane 31.
The application provides the collector of the 14th embodiment, exists with the revealed collector difference of first embodiment
In: as shown in figure 17, the revealed basement membrane 41 of the present embodiment can be braided fabric, which may include setting along first direction D1
The first litzendraht wire 411 for setting and in a second direction the second litzendraht wire 412 of D2 setting, the first litzendraht wire 411 and the second litzendraht wire
412 intersection settings.
Wherein, the first litzendraht wire 411 includes a plurality of first metal wire 413 and a plurality of first non-metal wire 414, the first metal
Line 413 and the first non-metal wire 414 are disposed adjacent.Second litzendraht wire 412 includes a plurality of second metal wire 415 and a plurality of second non-
Metal wire 416, the second metal wire 415 and the second non-metal wire 416 are disposed adjacent.First metal wire 413 and the second metal wire 415
Material all can be one of copper, nickel, titanium, tin, zinc, iron, gold or silver or at least two compound alloys；First is nonmetallic
The material of line 414 and the second non-metal wire 416 all can be PP, PET, PE, PVC, PI, nylon, inorganic material, aluminium oxide, oxygen
Change at least one of mixture or the carbon nanotube of magnesium, aluminium hydroxide, silica and graphite.
Wherein, first direction D1 and second direction D2 is vertically arranged, i.e. the first litzendraht wire 411 and the second litzendraht wire 412 hang down
Straight setting.In other embodiments, the angle between first direction D1 and second direction D2 can be set to other angles, such as
Angle between first direction D1 and second direction D2 is 60 ° or 120 °.
Copper foil or aluminium foil compared with the existing technology, the revealed collector of the present embodiment include basement membrane 41, basement membrane 41
It can be braided fabric, can reduce the thickness and weight of collector, reduce cost.
It is understood that in other embodiments, collector can only include basement membrane 41, and pass through the first gold medal of basement membrane 41
Belong to line 413 and the second metal wire 415 carries out electric current transmission, without metal layer is arranged on basement membrane 41.
The application provides the collector of the 15th embodiment, exists with the revealed collector difference of first embodiment
In: the material of the revealed basement membrane of the present embodiment is low conductivity material, and low conductivity material includes the metal material of low conductivity
The nonmetallic materials of material and low conductivity.
Wherein, the metal material of low conductivity can be stainless steel；The nonmetallic materials of low conductivity can for graphite or
Carbon nanotube or carbon fiber.The low conductivity material can also be the mixing material or metal material of metal material and graphite
With the mixture of aluminium oxide, metal material can answer for one of copper, nickel, titanium, tin, zinc, iron, gold or silver or at least two
It closes.
The application provides the collector of the 16th embodiment, and as shown in figure 18, the revealed collector 50 of the present embodiment wraps
Basement membrane 51 and conductive layer 52 are included, conductive layer 52 is arranged on an at least surface for basement membrane 51, and the present embodiment is with the setting of conductive layer 52
It is illustrated on the surface of basement membrane 51 511.In other embodiments, it is arranged on two opposite surfaces of basement membrane 51 conductive
Layer 52.
Wherein, the material of conductive layer 52 is the compound or carbon nanotube of carbon black and glue and the compound of glue.Conductive layer
52 are arranged on the surface 511 of basement membrane 51 by modes such as vapor deposition, sputter, plating, spraying plating or coatings.
The revealed basement membrane 51 of the present embodiment can be the revealed basement membrane 11 of above-mentioned first embodiment, the 11st embodiment
Revealed basement membrane, the revealed basement membrane 31 of the 12nd embodiment, the revealed basement membrane 41 or the 14th of the 13rd embodiment
The revealed basement membrane of embodiment.
The structure of the revealed conductive layer 52 of the present embodiment and the structure of the revealed the first metal layer 12 of above-described embodiment
Identical, details are not described herein.
The application provide the 17th embodiment collector, on the basis of first embodiment revealed collector into
Row description, as shown in figure 19, collector 10 further comprises second metal layer 13, and the of basement membrane 11 is arranged in the first metal layer 12
On one surface 111, second metal layer 13 is arranged on the second surface 112 of basement membrane 11, the first surface 111 of basement membrane 11 and second
Surface 112 is oppositely arranged.
Wherein, the knot of second metal layer 13 and above-mentioned first embodiment to the 11st revealed the first metal layer of embodiment
Structure is identical, and details are not described herein.
Basement membrane based on first embodiment is that the material of the composite membrane of organic material and the basement membrane of the 15th embodiment is low
Conductivity material, since basement membrane is non-conductive or electric conductivity is poor, the first metal layer 12 and second metal layer 13 can not lead to
It crosses basement membrane 11 and realizes electrical connection.
The application provides the collector of the 18th embodiment, and as shown in figure 20, the revealed collector 60 of the present embodiment wraps
It includes basement membrane 61, the first metal layer being arranged on the first surface of basement membrane 61 62 and is arranged on the second surface of basement membrane 61
Second metal layer 63.
As shown in figure 21, collector 60 further comprises tab 64, tab 64 and the first metal layer 62 and second metal layer
63 connections, so that the first metal layer 62 and second metal layer 63 are electrically connected by tab 64.
Wherein, the first area 621 of the first metal layer 62 is connect with tab 64, and the thickness of first area 621 is greater than first
The thickness in other regions of metal layer 62；The second area 631 of second metal layer 63 is connect with tab 64, second area 631
Thickness is greater than the thickness in other regions of second metal layer 63, to reduce impedance, improves conductivity.
As shown in figure 21, tab 64 can be I-shaped conductive sheet, and the first end 641 and the first metal layer 62 of tab 64 connect
It connects, the second end 642 of tab 64 is connect with second metal layer 63.In other embodiments, tab 64 can be set to other shapes
The conductive sheet of shape, such as tab 64 can be that L shape conductive sheet is as shown in figure 22 or tab 64 can be T shape conductive sheet.
The revealed basement membrane 61 of the present embodiment can be the revealed basement membrane of above-mentioned first embodiment or the 15th embodiment
Revealed basement membrane, details are not described herein.The revealed the first metal layer 62 of the present embodiment can be above-mentioned first embodiment to the
The revealed the first metal layer of 11 embodiments, the revealed second metal layer 63 of the present embodiment are above-mentioned 17th embodiment institute
The second metal layer of announcement, details are not described herein.
The present embodiment collector 60 includes tab 64, and tab 64 can be I-shaped conductive sheet, tab 64 and the first metal
Layer 62 and second metal layer 63 connect, so that the first metal layer 62 and second metal layer 63 are connected by tab 64；Furthermore first
The thickness of the first area 621 adjacent with tab 64 of metal layer 62 be greater than the first metal layer 62 other regions thickness, second
The thickness of the second area 631 adjacent with tab 64 of metal layer 63 is greater than the thickness in other regions of second metal layer 63, with drop
Low ESR improves conductivity.
The application provides the collector of the 19th embodiment, and as shown in figure 23, the revealed collector 70 of the present embodiment wraps
It includes basement membrane 71, the first metal layer being arranged on the first surface of basement membrane 71 72 and is arranged on the second surface of basement membrane 71
Second metal layer 73, wherein basement membrane 71 is the composite membrane of the revealed organic material of above-mentioned first embodiment, the 12nd embodiment
Revealed non-woven fabrics and the revealed basement membrane of 15 embodiments, details are not described herein.When basement membrane 71 is non-woven fabrics, the nothing
The material of woven fabric includes metal material and nonmetallic materials, and the electric conductivity of the non-woven fabrics is poor.
As shown in figure 23, basement membrane 71 is provided at least one through-hole 711, the first metal layer 72 and/or second metal layer 73
It extends in through-hole 711.Wherein the basement membrane 71 of collector 70, the first metal layer 72 and second metal layer 73 are heated and squeezed
Pressure, so that the basement membrane 71 being extruded squeezes away toward surrounding, and then is provided at least one through-hole 711 on basement membrane 71；Quilt
The first metal layer 72 after extruding and second metal layer 73 are connected by through-hole 711, i.e. the first metal layer 72 and second metal layer
73 extend in through-hole 711, so that the first metal layer 72 and second metal layer 73 connect.
Wherein, the diameter of through-hole 711 can be 0.001-0.05mm.When multiple through-holes 711 are arranged in basement membrane 71, multiple through-holes
711 can be arranged at intervals on basement membrane 71 as preset.In other embodiments, multiple through-holes 711 can be randomly dispersed in base
On film 71.
As shown in figure 24, multiple collectors 70 are stacked, and multiple collectors 70 are connect with tab 74, can pass through welding
Mode welds together the first metal layer 72 of each collector 70 and second metal layer 73 and tab 74, welding manner packet
Include but be not limited to ultrasonic bond, electronics weldering, Laser Welding or cold welding etc..
The basement membrane 71 of the present embodiment is provided at least one through-hole 711, and the first metal layer 72 and second metal layer 73 pass through
Through-hole 711 connects, and enables to the current density of the first metal layer 72 and second metal layer 73 balanced, furthermore basement membrane 71 is organic
The composite membrane of material can reduce the weight of collector 70 and reduce the thickness of collector 70, and then can be improved the energy of battery
Metric density, and reduce cost.
The revealed the first metal layer 72 of the present embodiment is that above-mentioned first embodiment is real to the 11st embodiment and the 17th
The revealed the first metal layer of example is applied, second metal layer 73 is the revealed second metal layer of above-mentioned 17th embodiment, herein
It repeats no more.
The application provides the collector of the 20th embodiment, with the revealed collector difference of the 19th embodiment
It is: as shown in figure 25, before the first metal layer 72 and second metal layer 73 is arranged in basement membrane 71, at least one is arranged on basement membrane 71
A through-hole 711, wherein basement membrane 71 is heated and squeezed, at least one through-hole 711 to be arranged on basement membrane 71.
In one embodiment, the first metal layer 72 and the second surface in basement membrane 71 are set on the first surface of basement membrane 71
After upper setting second metal layer 73, the first metal layer 72 and/or second metal layer 73 are extended in the through-hole, wherein aligning
The first metal layer 72 and second metal layer 73 in 711 two sides of through-hole are squeezed, so that 72 He of the first metal layer after extruding
Second metal layer 73 is connected by through-hole 711.
In one embodiment, connector 74 is contained at least one through-hole 711, so that the first metal layer 72 and second
Metal layer 73 is connected by connector 74, and as shown in figure 26, which can be metal powder or metallic conductor.
In one embodiment, the first metal layer 72 is arranged by modes such as vapor deposition, spraying plating, sputter, plating or coatings
First surface and the inner wall that the setting of second metal layer 73 is arranged in through-hole 711 on a second surface and by conductive layer, the first gold medal
Belong to layer 72 to connect with second metal layer 73 by conductive layer.The conductive layer can be the first metal layer 72 and/or second metal layer 73,
Therefore the first metal layer 72 and second metal layer 73 pass through the first metal layer 72 and/or second metal layer 73 of 711 inner wall of through-hole
Connection.
The first metal layer 72 and second metal layer 73 of the present embodiment connect, and enable to the first metal layer 72 and the second gold medal
The current density for belonging to layer 73 is balanced.
The application provide the 21st embodiment collector, it is different from the 20th revealed collector of embodiment it
Be in: as shown in figure 27, basement membrane 81 include first area 811 and second area 812, positioned at the basement membrane 81 of second area 812
It is provided with through-hole 813.
The first metal layer 82 is arranged on the first surface of basement membrane 81, and the second table of basement membrane 81 is arranged in second metal layer 83
On face, as shown in figure 28, the first metal layer 82 and/or second metal layer 83 of the present embodiment are the metal that fusing point is lower than 300 DEG C
Or alloy, the metal can be one of bismuth, mercury, francium, caesium, tin, indium, alloy can for bismuth, mercury, francium, caesium, tin, in indium at least
Two kinds of compound alloys, such as alloy are bismuth tin alloy, and bismuth tin alloy includes 58% bismuth and 42% tin.Therefore, the first gold medal
Category layer 82 and the fusing point of second metal layer 83 are lower than the fusing point of basement membrane 81.
The first metal layer 82 and second metal layer 83 that are located at second area 812 are heated, 82 He of the first metal layer
Second metal layer 83 melts, so that the first metal layer 82 and second metal layer 83 are connected by multiple through-holes 813, that is, is located at second
The first metal layer 82, second metal layer 83 and the basement membrane 81 in region 812 form tab.
The present embodiment by be located at second area 801 the first metal layer 82 and second metal layer 83 heat, with
So that the first metal layer 82 and second metal layer 83 are connected by multiple through-holes 813, the first metal layer 82 and second are enabled to
The current density of metal layer 83 is balanced.
The application provide the 22nd embodiment collector, it is different from the 19th revealed collector of embodiment it
Be in: as shown in figure 29, the basement membrane 91 and the first metal layer 92 of collector 90 are heated and are squeezed, the base that will be extruded
Film 91 squeezes away toward surrounding, and then at least one groove 911 is arranged on basement membrane 91, which is arranged in basement membrane 91
On first surface, the first metal layer 92 is extruded in the groove 911 at this time.In other embodiments, groove 911 be can be set
On the second surface of basement membrane 91 or it is arranged in the first surface and second surface of basement membrane 91.
The first metal layer 92 and second metal layer 93 corresponding to groove 911 are welded, so that 92 He of the first metal layer
Second metal layer 93 is perforated through the groove 911 and realizes connection, as shown in figure 30.Wherein, the mode of welding concretely ultrasonic bond,
One of electronics weldering, Laser Welding or cold welding.
As shown in figure 31, the collector 90 preparation method the following steps are included:
S311: being heated and squeezed with the first metal layer 92 being arranged on basement membrane 91 to the basement membrane 91 of collector 90,
At least one groove 911 to be arranged on basement membrane 91；
As shown in figure 29, the basement membrane 91 of collector 90 and the first metal layer 92 are heated and is squeezed, by what is be extruded
Basement membrane 91 squeezes away toward surrounding, and then at least one groove 911 is arranged on basement membrane 91, which is arranged in basement membrane 91
First surface on.The first metal layer 92 is heated and squeezed, the first metal layer 92 is expressed in the groove 911.
S312: welding corresponds to the first metal layer 92 and second metal layer 93 of groove 911, so that 92 He of the first metal layer
Second metal layer 93 connects.
Wherein, it is welded corresponding to the first metal layer 92 of groove 911 and second metal layer 93, so that the first metal layer
92 and second metal layer 93 be perforated through the groove 911 realize connection, as shown in figure 30.Wherein, the mode of welding concretely surpasses
One of sonic soldering, electronics weldering, Laser Welding or cold welding.
The present embodiment corresponds to the first metal layer 92 of groove 911 and second metal layer 93 is welded, so that the first gold medal
Belong to layer 92 and second metal layer 93 is perforated through the groove 911 and realizes connection, enables to the first metal layer 792 and second metal layer
93 current density is balanced.
The application provides the preparation method of the collector of first embodiment, as shown in figure 32, the revealed system of the present embodiment
Preparation Method the following steps are included:
S181: a basement membrane is provided.
Wherein, basement membrane can be the composite membrane of organic material, and the composite membrane of the organic material can be PE and PET and PP
Composite membrane, the composite membrane of PE and PP, PP and PET composite membrane.
In one embodiment, basement membrane can be non-woven fabrics, and the material of the non-woven fabrics may include metal material, which can
Think one of copper, nickel, titanium, tin, zinc, iron, gold or silver or at least two compound alloys.In other embodiments, metal
Material can also be one of copper wire, nickel wire, titanium silk, tin silk, zinc silk, iron wire, spun gold or filamentary silver or a variety of.In addition, nonwoven
The material of cloth may also include nonmetallic materials, and nonmetallic materials can be PP, PET, PE, PVC, PI, nylon, inorganic material, oxygen
Change one or more of mixture or the carbon fiber of aluminium, magnesia, aluminium hydroxide, silica and graphite.
In one embodiment, basement membrane can be the revealed braided fabric of above-mentioned 13rd embodiment.
In one embodiment, basement membrane can be the revealed braided fabric of above-mentioned 14th embodiment.
In one embodiment, the material of basement membrane is low conductivity material.
S182: the first metal layer is set on basement membrane.
Wherein, under vacuum conditions, by the material of the first metal layer by being deposited onto the first surface of basement membrane, in base
The first metal layer is arranged in the first surface of film.
Alternatively, the first metal layer is made in the material of the first metal layer, and the first metal layer is set by modes such as fittings
It sets on the first surface.
In other embodiments, the first gold medal is set on the first surface by way of sputter, plating, spraying plating or coating
Belong to layer.
The revealed the first metal layer of the present embodiment can be revealed to the 11st embodiment for above-mentioned second embodiment
The first metal layer.
The basement membrane of the present embodiment can be composite membrane, non-woven fabrics or the braided fabric of organic material, can reduce collector
Weight and reduce the thickness of collector, and then can be improved the energy density of battery, and reduce cost.
The application also provides the battery battery core of first embodiment, refers to shown in Figure 33-34, and Figure 33 is that the application first is real
Apply the structural schematic diagram of the battery battery core of example；Figure 34 is schematic cross-section of the battery battery core in Figure 33 along I-I '.Wherein, battery
Battery core 920 includes positive plate 921, negative electrode tab 922, membrane layer 923 and shell 924, positive plate 921, membrane layer 923 and negative electrode tab
922 are stacked and are formed by accommodating space 925 in shell 924, and positive plate 921 includes collector 926 and is arranged in afflux
Active layer 927 on body 926, negative electrode tab 922 include collector 928 and the active layer 929 being arranged on collector 928, afflux
Body 926 can be the revealed collector of above-mentioned implementation, and collector 928 can be the revealed collector of above-described embodiment, herein not
It repeats again.
Wherein, it is additionally provided with positive pole ear 930 on positive plate 921, is equally also equipped with negative lug in negative electrode tab 922
931, battery battery core 920 completes charge and discharge process by positive pole ear 930 and negative lug 931.Positive pole ear 930 can be above-mentioned
The revealed tab of embodiment, negative lug 931 can be the revealed tab of above-described embodiment, and details are not described herein.
Battery battery core 920 also needs to inject electrolyte in accommodating space 925, so that positive plate 921 and negative electrode tab 922
It impregnates in the electrolytic solution, electrolyte is used for so that positive plate 921 and negative electrode tab 922 carry out charge transmission by electrolyte, in turn
Realize that battery battery core 920 carries out charge and discharge.Wherein electrolyte is generally by the organic solvent of high-purity, electrolyte lithium salt (hexafluoro phosphorus
Sour lithium), the raw materials such as additive are formulated by a certain percentage under certain condition.
The application provides the battery of an embodiment, as shown in figure 35, revealed 190 protection circuit plate of battery of the present embodiment
191 and battery battery core 192, protection circuit plate 191 connect with battery battery core 192, protection circuit plate 191 is for protecting battery battery core
192, battery battery core 192 is the revealed battery battery core of above-described embodiment, and details are not described herein.
It should be noted that the above various embodiments belongs to same inventive concept, the description of each embodiment emphasizes particularly on different fields,
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 (10)
1. a kind of collector, which is characterized in that the collector includes basement membrane, the first gold medal for being separately positioned on the basement membrane two sides
Belong to layer and second metal layer, the basement membrane includes first area and second area, and the basement membrane positioned at the second area is arranged
There is through-hole, the first metal layer is connected with the second metal layer by the through-hole.
2. collector according to claim 1, which is characterized in that the first metal layer and/or the second metal layer
It is lower than 300 DEG C of metal or alloy for fusing point.
3. collector according to claim 2, which is characterized in that the first metal layer and/or the second metal layer
It can be one of bismuth, mercury, francium, caesium, tin, indium.
4. collector according to claim 2, which is characterized in that positioned at the first metal layer of the second area
And/or the second metal layer is heated, so that the first metal layer and the second metal layer melt and pass through described
Through-hole connection.
5. collector according to claim 1, which is characterized in that the first metal layer includes at least one layer of metallic film
Layer, every layer of metal film layer with a thickness of 0.001-5 μm, the first metal layer with a thickness of 0.001-10 μm.
6. collector according to claim 5, which is characterized in that the metal film layer includes multiple spaced gold
Belong to area, one end of each metal area and the tab of battery connect.
7. collector according to claim 5, which is characterized in that the metal film layer includes at least one metal area,
At least one non-metallic areas is provided between the adjacent metal area.
8. collector according to claim 1, which is characterized in that the pattern of the first metal layer is netted or strip
Or linear pattern.
9. a kind of battery battery core, which is characterized in that the battery battery core includes positive plate, negative electrode tab, membrane layer and shell, described
Positive plate, the membrane layer and the negative electrode tab are stacked in the shell, the positive plate and/or the negative electrode tab packet
The active layer for including the collector as described in claim 1-8 any one and being arranged on the collector.
10. a kind of battery, which is characterized in that the battery includes battery battery core as claimed in claim 9 and protection circuit plate,
The protection circuit plate is connected with the battery battery core, for protecting the battery battery core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820248791.3U CN208433472U (en) | 2018-02-09 | 2018-02-09 | Battery, battery battery core and collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820248791.3U CN208433472U (en) | 2018-02-09 | 2018-02-09 | Battery, battery battery core and collector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021098889A1 (en) * | 2019-11-19 | 2021-05-27 | 深圳市海鸿新能源技术有限公司 | Pole piece of rechargeable battery, preparation method, and rechargeable battery |
| CN113097494A (en) * | 2021-03-31 | 2021-07-09 | 珠海冠宇电池股份有限公司 | Current collector and application thereof |
-
2018
- 2018-02-09 CN CN201820248791.3U patent/CN208433472U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021098889A1 (en) * | 2019-11-19 | 2021-05-27 | 深圳市海鸿新能源技术有限公司 | Pole piece of rechargeable battery, preparation method, and rechargeable battery |
| CN113097494A (en) * | 2021-03-31 | 2021-07-09 | 珠海冠宇电池股份有限公司 | Current collector and application thereof |
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