CN207690921U - Battery and battery - Google Patents
Battery and battery Download PDFInfo
- Publication number
- CN207690921U CN207690921U CN201721659560.3U CN201721659560U CN207690921U CN 207690921 U CN207690921 U CN 207690921U CN 201721659560 U CN201721659560 U CN 201721659560U CN 207690921 U CN207690921 U CN 207690921U
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- electrode sheet
- initial segment
- battery
- segment
- coated
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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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Battery Electrode And Active Subsutance (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Secondary Cells (AREA)
Abstract
The utility model discloses a kind of battery and with its battery, battery includes：First electrode sheet, first electrode sheet have the first the initial segment of uncoated active material and the first coated segment coated with the first active material；Second electrode sheet, second electrode sheet have the second the initial segment of uncoated active material and the second coated segment coated with the second active material；Isolation film, isolation film are set between first electrode sheet and second electrode sheet, and first electrode sheet, second electrode sheet and isolation film wind to form battery；Insulating part, insulating part are arranged between the first the initial segment and second electrode sheet, and insulating part is completely isolated by the first the initial segment and second electrode sheet.According to the battery of the utility model embodiment, electrode slice short-circuit conditions caused by the contraction of isolation film can also be avoided after high-temperature shrinkage to avoid the phenomenon of short circuit caused by burr pierces through diaphragm is generated because of electrode slice slitting, severing, it is safer.
Description
Technical field
The utility model is related to cell manufacturing techniques field, more particularly to a kind of battery and the electricity with the battery
Pond.
Background technology
In the related technology, positive plate front end active material posts insulating cement with blank aluminium foil intersection two sides, and insulating cement is remote
Less than the area of leading blank aluminium foil, burr puncture diaphragm not there may be by the aluminium foil that insulating cement covers and cause battery short
Road, and the diaphragm of initiating terminal is easily cut, there is Fold in volume needle influence, and the positive and negative anodes for being unable to isolated preceding-terminal is caused to cause just
Cathode contact short circuit.
Utility model content
The utility model is intended to solve at least some of the technical problems in related technologies.
For this purpose, a purpose of the utility model is to propose a kind of battery of performance safety.
The utility model also proposes a kind of battery of performance safety.
According to the battery of the utility model first aspect embodiment, including：First electrode sheet, the first electrode sheet tool
There are the first the initial segment of uncoated active material and the first coated segment coated with the first active material；Second electrode sheet, it is described
Second electrode sheet has the second the initial segment of uncoated active material and the second coated segment coated with the second active material；Isolation
Film, the isolation film are set between the first electrode sheet and the second electrode sheet, the first electrode sheet, second electricity
Pole piece and the isolation film wind to form the battery；Insulating part, insulating part setting in first the initial segment and
Between second electrode sheet, the insulating part is completely isolated by the first the initial segment and second electrode sheet.
According to the battery of the utility model embodiment, can to avoid because electrode slice slitting, severing generate burr pierce through every
Film causes the phenomenon of short circuit, can also avoid after high-temperature shrinkage electrode slice short-circuit conditions caused by the contraction of isolation film, more
Add safety.
In addition, according to the battery of the utility model above-described embodiment, there can also be following additional technical characteristic：
The both sides table of first the initial segment is completely covered in one embodiment according to the present utility model, the insulating part
Face.
One embodiment according to the present utility model, the insulating part include：First insulating tape, the first the initial segment packet
It includes both sides to be covered with the area of coverage of the first insulating tape and be left white area, the area that is left white is located at the area of coverage and first starting
Between the free end end of section；Second insulating tape, second insulating tape are located at the second electrode on piece and towards described
One the initial segment, and projection of second insulating tape in first the initial segment cover first the initial segment be left white area.
One embodiment according to the present utility model, projection and institute of second insulating tape towards first the initial segment
The first insulating tape is stated to partly overlap.
The projection of one embodiment according to the present utility model, second insulating tape towards first the initial segment is stretched out
First the initial segment.
One embodiment according to the present utility model, the first insulation on an at least side surface for the first electrode sheet
Band includes multistage, and two section first insulating tapes adjacent in same side surface partly overlap.
One embodiment according to the present utility model, first insulating tape cover a part for first coated segment.
One embodiment according to the present utility model, the insulating part are insulating tape.
One embodiment according to the present utility model, at least part of both side surface in first coated segment apply
It is covered with the first active material, at least part of both side surface in second coated segment is coated with the second active material.
Battery according to the utility model second aspect embodiment includes the battery of above-described embodiment, due to according to this reality
Phenomenon short-circuit caused by burr pierces through diaphragm can be generated to avoid because of electrode slice slitting, severing with the battery of new embodiment,
Electrode slice short-circuit conditions caused by the contraction of isolation film can also be avoided after high-temperature shrinkage, it is safer, therefore, according to this
The battery of utility model embodiment is also safer.
The additional aspect and advantage of the utility model will be set forth in part in the description, partly will be from following description
In become apparent, or recognized by the practice of the utility model.
Description of the drawings
Fig. 1 is the sectional view according to the battery of the utility model one embodiment；
Fig. 2 is the sectional view according to the battery of the utility model another embodiment.
Reference numeral：
Battery 100,
First electrode sheet 10, the first the initial segment 11, the first coated segment 12,
Second electrode sheet 20, the second the initial segment 21, the second coated segment 22,
Isolation film 30,
Insulating part 40, the first insulating tape 41, the second insulating tape 42,
First active material 51, the second active material 52.
Specific implementation mode
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model
Limitation.
In the related technology, positive plate front end active material posts insulating cement with blank aluminium foil intersection two sides, and insulating cement is remote
Less than the area of leading blank aluminium foil, burr puncture diaphragm not there may be by the aluminium foil that insulating cement covers and cause battery short
Road, and the diaphragm of initiating terminal is easily cut, there is Fold in volume needle influence, and the positive and negative anodes for being unable to isolated preceding-terminal is caused to cause just
Cathode contact short circuit.
To solve the above-mentioned problems, the utility model proposes a kind of batteries 100, and root is described referring to Fig. 1 to Fig. 2
According to the battery 100 of the utility model embodiment.As shown in Figure 1, the battery 100 substantially may include：First electrode sheet
10, second electrode sheet 20, isolation film 30 (being shown in broken lines in as shown in Figure 1, Figure 2) and insulating part 40.
As shown in Figure 1 with Figure 2, first electrode sheet 10 has the first the initial segment 11 of uncoated active material and is coated with
First coated segment 12 of the first active material 51.Second electrode sheet 20 has 21 He of the second the initial segment of uncoated active material
The second coated segment 22 coated with the second active material 52.
In other words, first electrode sheet 10 and second electrode sheet 10 are from inside and outside winding, wherein in first electrode sheet 10
A part be coated with the first active material 51 and be formed as the first coated segment 12, one section of 10 inside of first electrode sheet does not coat
First active material 51 is formed as the first the initial segment 11；A part in second electrode sheet 20 is coated with the second active material 52
Be formed as the second coated segment 22, one section of 20 inside of second electrode sheet is formed as the second starting without the second active material 52 of coating
Section 21.
Isolation film 30 is set between first electrode sheet 10 and second electrode sheet 20, first electrode sheet 10, second electrode sheet 20
And the winding of isolation film 30 forms battery 100.Insulating part 40 is arranged between the first the initial segment 11 and second electrode sheet 20, absolutely
The both side surface of the first the initial segment 11 is completely covered in edge part 40.
Specifically, first electrode sheet 10 and second electrode sheet 20 all have the initial segment and the coating of uncoated active material
The coated segment of active substance, for isolation film 30 between first electrode sheet 10 and second electrode sheet 20, insulating part 40 is located at the
Between two electrode slices 20 and the first the initial segment 11.
Ion exchange can be carried out between first active material 51 and the second active material 52, to generate electric current.In addition,
First active material 51 and the second active material 52 can effectively improve the adhesive force of electrode slice, reduce the usage amount of bonding agent,
The storage performance of battery is also obviously improved simultaneously.
Wherein, the first the initial segment 11 is the clear area of uncoated first active material 51；Second the initial segment 21 is uncoated
The clear area of second active material 52, the first the initial segment 11 and the second the initial segment 21 can collect electric current, and active material is generated
Electric current collect to form larger current versus output.
Isolation film 30 between first electrode sheet 10 and second electrode sheet 20 can prevent positive and negative electrode joint and
Caused internal short-circuit of battery, and the molecule that volume can be prevented bigger of isolation film 30 by by only allow the electrification of small size
Particle passes through, and the ion concentration that can be improved near positive and negative electrode in this way is poor, to improve the storage efficiency of battery.
It is appreciated that 40 completely isolated first electrode sheet 10 of insulating part the first the initial segment 11 and second electrode sheet 20 with
And the second the initial segment 21 and the first the initial segment 11 of second electrode sheet 20, insulating part 40 between isolation film 30 and electrode slice, when
When battery 100 is under 100 DEG C or 100 DEG C or more of hot conditions, the insulating part 40 being attached on electrode slice can be by electrode slice
It sticks together with isolation film 30, certain inhibiting effect is played to the contraction of isolation film 30, prevents positive and negative electrode piece short-circuit.Insulating part
40 between isolation film 30 and electrode slice, carries out comprehensive insulating to the initial segment of electrode slice front end, can also avoid because of electricity
Pole piece cutting, severing generate burr and pierce through the phenomenon that diaphragm causes short circuit.
As a result, according to the battery of the utility model embodiment 100, insulating part 40 is by by the first the initial segment 11 and second
Electrode slice 20 and the second the initial segment 21 and first electrode sheet 10 are completely isolated, can be generated to avoid because of electrode slice slitting, severing
Burr pierces through the phenomenon that diaphragm causes short circuit, can also avoid after high-temperature shrinkage electrode slice caused by the contraction of isolation film 30
Short-circuit conditions, it is safer.
In some embodiments, as shown in Figure 1, the both side surface of the first the initial segment 11 is completely covered in insulating part 40.In other words
It says, the first the initial segment 11 is completely covered by insulating part 40, and insulating part 40 has the function of preventing short circuit, the first the initial segment 11
Both side surface at least partly all with 20 face of second electrode sheet, its both sides, which is completely covered, can ensure battery 100 more
Safety.In order to further increase reliability, one end of insulating part 40 can be with the first active material of covering part 51.Certainly, it insulate
The both side surface of the second the initial segment 21 can be also completely covered in part 40.
In some alternative embodiments, as shown in Figure 1, insulating part 40 includes the first insulating tape 41 and the second insulating tape 42.The
One the initial segment 11 is covered with the area of coverage (not shown) of the first insulating tape 41 including both sides and is left white area's (not shown), is left white
Area is located between the area of coverage and the free end end of the first the initial segment 11.Second insulating tape 42 is located in second electrode sheet 20 simultaneously
Towards the first the initial segment 11, and projection of second insulating tape 42 in the first the initial segment 11 covers being left white for the first the initial segment 11
Area.
Free end described in text refers to one end far from the first coated segment in the first the initial segment.
It is appreciated that covering the first insulating tape 41 since the first coated segment 12 can ensure that the first insulating tape 41 covers completely
The part that the first the initial segment of lid 11 is combined with the first coated segment 12 is without interspacing.And first insulating tape 41 do not stretch out the first starting
Section 11 free end can to avoid because first electrode sheet 10 expand with heat and contract with cold drive the first insulating tape 41 movement when caused by first absolutely
The short circuit phenomenon that marginal zone 41 is damaged and occurs.Further, the second insulating tape 42 is located in second electrode sheet 20, and the second insulation
What the projection with 42 in the first the initial segment 11 covered the first the initial segment is left white area, it is ensured that the first the initial segment 11 is stayed
White area (part for not covering the first insulating tape 41) will not open ground face second electrode sheet 20, avoid short circuit phenomenon.Certainly,
Above-described embodiment is only illustrative, the limitation of the scope of protection of the utility model that can not be interpreted as, for example, the first insulating tape
The free end of 41 also extended first the initial segments 11, this way it is not necessary to the second insulating tape 42 is additionally set, it is simple for process, it saves
Material.
In one specific embodiment, as shown in Figure 1, projection and first of second insulating tape 42 towards the first the initial segment 11 are exhausted
Marginal zone 41 partly overlaps.Namely in Fig. 1 the referred to peak widths of A be more than zero, for example, the width of lap be 0.1 millimeter,
0.2 millimeter, 0.5 millimeter etc., in this way, the exposed part face of the first the initial segment 11 caused by error can be further avoided
Second electrode sheet 20, it is safer.
In another specific embodiment, the first the initial segment is stretched out in the projection of the second insulating tape 42 towards the first the initial segment 11
11.For example, extension elongation can be 1.0 millimeters, 1.5 millimeters, 2.0 millimeters or 2.5 millimeters etc., that is to say, that the second insulating tape
42 both can coordinate completely isolated, the second insulating tape completed to first electrode sheet 10 and second electrode sheet 20 with the first insulating tape 41
42 can not also need with the cooperation of the first insulating tape 41 can itself completely isolated first electrode sheet 10 and second electrode sheet 20, example
Such as, the length of the second insulating tape 42 is more than the length of the first the initial segment 11 namely an end projection of the second insulating tape 42 stretches out the
One the initial segment 11, another end projection is Chong Die with the first coated segment 12, in this way, being not required to that the first insulating tape 41 is additionally arranged, production is more
Add simple.
In some embodiments, as shown in Fig. 2, the first insulating tape 41 on an at least side surface for first electrode sheet 10
It partly overlaps including multistage, and in two section of first insulating tape 41 of same side surface arbitrary neighborhood.That is, first electrode sheet
10 can be arranged multistage the first insulating tape 41 with both sides, can also only in side the first insulating tape of setting multistage 41 and the other side is arranged
One section of first insulating tape 41 has overlapping between adjacent insulating tape, wherein the length of lap can be 0.5 millimeter, 0.8 milli
Rice, 1.0 millimeters etc., the first insulating tape 41 of multisection type can ensure during expanding with heat and contract with cold, and the first insulating tape 41 can be with
Segmentation is shunk, and first insulating tape, 41 crack conditions caused by a contract by distance is excessive is avoided to occur.Of course, it is possible to manage
Solution, the second insulating tape 42 may be alternatively provided as multisection type.
Preferably, as depicted in figs. 1 and 2, the first insulating tape 41 covers a part for the first coated segment 12.In this way, can be with
Ensure that the area that is left white of the first the initial segment 11 is covered by the first insulating tape 41 completely, improves the effect of the insulation to the first the initial segment 11
Fruit, it is safer.
Advantageously, insulating part 40 is insulating tape.Bonding way is adapted to attach on sheet material, stable connection.Therefore, it insulate
Adhesive tape can be covered in easily in first electrode sheet 10 or second electrode sheet 20, and not easily to fall off, and this bonding way is not
It needs complicated production technology can be completed, reduces production cost.
Optionally, as shown in Figure 1 with Figure 2, at least part of both side surface in the first coated segment 12 is coated with
First active material 51, at least part of both side surface in the second coated segment 22 are coated with the second active material 52.The
One active material 51 and the second active material 52 are rich in charged ion, are the carriers of charged ion.In 12 He of the first coated segment
Active material is all coated in the both sides of second coated segment 22, in this way, the amount of ions in unit volume can be improved, to improve
The charge capacity of battery.
Battery (not shown) according to the utility model embodiment includes the battery 100 of above-described embodiment, due to root
It can be to avoid short caused by electrode slice slitting, severing generation burr puncture diaphragm according to the battery 100 of the utility model embodiment
The phenomenon that road, can also avoid after high-temperature shrinkage electrode slice short-circuit conditions caused by the contraction of isolation film 30, safer,
Therefore, also safer according to the battery of the utility model embodiment.
In the description of the present invention, it should be understood that term "center", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " suitable
The orientation or positional relationship of the instructions such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " is orientation based on ... shown in the drawings
Or position relationship, be merely for convenience of describing the present invention and simplifying the description, do not indicate or imply the indicated device or
Element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as the limit to the utility model
System.
In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.The meaning of " plurality " is at least two, such as two in the description of the present invention,
It is a, three etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；Can be
Mechanical connection can also be electrical connection；It can be directly connected, can also can be indirectly connected through an intermediary two
The interaction relationship of connection or two elements inside element, unless otherwise restricted clearly.For the common skill of this field
For art personnel, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention unless specifically defined or limited otherwise, fisrt feature is "above" or "below" second feature
Can be that the first and second features are in direct contact or the first and second features pass through intermediary mediate contact.Moreover, first is special
Sign second feature " on ", " top " and " above " can be fisrt feature and be directly above or diagonally above the second feature, or only
Indicate that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be with
It is that fisrt feature is directly under or diagonally below the second feature, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
It states and is necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with
It can be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this field
Technical staff can by the feature of different embodiments or examples described in this specification and different embodiments or examples into
Row combines and combination.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model
Inside it can make changes, modifications, alterations, and variations to the above described embodiments.
Claims (10)
1. a kind of battery, which is characterized in that including：
First electrode sheet, the first electrode sheet have the first the initial segment of uncoated active material and are coated with the first active matter
First coated segment of matter；
Second electrode sheet, the second electrode sheet have the second the initial segment of uncoated active material and are coated with the second active matter
Second coated segment of matter；
Isolation film, the isolation film are set between the first electrode sheet and the second electrode sheet, the first electrode sheet, institute
It states second electrode sheet and the isolation film winds to form the battery；
Insulating part, the insulating part are arranged between first the initial segment and second electrode sheet, and the insulating part is by described the
One the initial segment and the second electrode sheet are completely isolated.
2. battery according to claim 1, which is characterized in that first the initial segment is completely covered in the insulating part
Both side surface.
3. battery according to claim 2, which is characterized in that the insulating part includes：
First insulating tape, first the initial segment includes that both sides are covered with the area of coverage of the first insulating tape and are left white area, described to stay
White area is between the area of coverage and the free end end of first the initial segment；
Second insulating tape, second insulating tape are located at the second electrode on piece and towards first the initial segments, and described
Projection covering first the initial segment of second insulating tape in first the initial segment is left white area.
4. battery according to claim 3, which is characterized in that second insulating tape is towards first the initial segment
Projection partly overlaps with first insulating tape.
5. battery according to claim 3, which is characterized in that second insulating tape is towards first the initial segment
First the initial segment is stretched out in projection.
6. battery according to claim 3, which is characterized in that on an at least side surface for the first electrode sheet
First insulating tape includes multistage, and is partly overlapped in two sections of first insulating tapes of same side surface arbitrary neighborhood.
7. battery according to claim 3, which is characterized in that first insulating tape covers first coated segment
A part.
8. according to the battery described in any one of claim 1-7, which is characterized in that the insulating part is insulating tape.
9. according to the battery described in any one of claim 1-7, which is characterized in that at least one in first coated segment
Partial both side surface is coated with the first active material, and at least part of both side surface in second coated segment applies
It is covered with the second active material.
10. a kind of battery, which is characterized in that include the battery according to any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721659560.3U CN207690921U (en) | 2017-11-30 | 2017-11-30 | Battery and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721659560.3U CN207690921U (en) | 2017-11-30 | 2017-11-30 | Battery and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207690921U true CN207690921U (en) | 2018-08-03 |
Family
ID=63000019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721659560.3U Active CN207690921U (en) | 2017-11-30 | 2017-11-30 | Battery and battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207690921U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109301152A (en) * | 2018-09-30 | 2019-02-01 | 芜湖天弋能源科技有限公司 | A kind of lithium ion battery and its manufacturing process |
| CN112687964A (en) * | 2018-11-05 | 2021-04-20 | 宁德新能源科技有限公司 | Electrochemical device |
-
2017
- 2017-11-30 CN CN201721659560.3U patent/CN207690921U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109301152A (en) * | 2018-09-30 | 2019-02-01 | 芜湖天弋能源科技有限公司 | A kind of lithium ion battery and its manufacturing process |
| CN112687964A (en) * | 2018-11-05 | 2021-04-20 | 宁德新能源科技有限公司 | Electrochemical device |
| CN112687964B (en) * | 2018-11-05 | 2022-07-15 | 宁德新能源科技有限公司 | Electrochemical device |
| US11978862B2 (en) | 2018-11-05 | 2024-05-07 | Ningde Amperex Technology Limited | Electrochemical device |
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