CN207624804U - The electrode and polymer Li-ion battery of polymer Li-ion battery - Google Patents
The electrode and polymer Li-ion battery of polymer Li-ion battery Download PDFInfo
- Publication number
- CN207624804U CN207624804U CN201721836300.9U CN201721836300U CN207624804U CN 207624804 U CN207624804 U CN 207624804U CN 201721836300 U CN201721836300 U CN 201721836300U CN 207624804 U CN207624804 U CN 207624804U
- Authority
- CN
- China
- Prior art keywords
- lug
- polymer
- thickness
- pole piece
- electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
Landscapes
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The disclosure is directed to a kind of electrode of polymer Li-ion battery and polymer Li-ion batteries.The electrode includes pole piece and lug, the lug has the first part for being connected to the pole piece and stretches out second part of the pole piece to be connect with external circuit, the width of the first part is more than the width of the second part, and the thickness of the first part is less than the thickness of the second part.Lug is artificially divided into two regions, and two regions have respectively different sizes, first part broadens relative to second part is thinning, on the one hand, the thickness that lug is located in winding-structure is reduced after pole piece forms winding-structure, lithium battery energy density is improved, when the battery for comparable size, the usage time for extending the electronic products such as mobile phone, improves user；On the other hand, the cross-sectional area of first part is also had adjusted compared with the prior art, this improves lug part current-carrying capability, is conducive to being uniformly distributed for electric current, reduces the risk of lug hot-spot.
Description
Technical field
This disclosure relates to the electrode and polymer Li-ion of lithium ion battery more particularly to a kind of polymer Li-ion battery
Battery.
Background technology
In the related technology, the battery core of polymer Li-ion battery be usually by anode pole piece, positive pole ear, cathode pole piece,
The compositions such as negative lug, isolation film, electrolyte and aluminum plastic film.Polymer Li-ion battery is by means of anode structure and negative pole structure
The embedding lithium ionic insertion/deinsertion of active material to carry out the transmission of energy.Positive pole ear and negative lug are respectively to draw anode and cathode
The metallic conductor gone out, to form contact site between electric equipment to carry out charge and discharge, the two respectively from anode pole piece and
It is stretched out in cathode pole piece, to be respectively formed the anode and cathode of polymer Li-ion battery.
In order to improve the volume energy density of lithium ion battery to promote the energy transmission of polymer Li-ion battery, lead to
Frequently with the weight and operating voltage that improve active material gram volume, unit area or by reducing collector, isolation film, pole
The methods of thickness of inert components such as ear.But a part for lug is installed on pole piece, another part is then stretched out from pole piece and is used
It is connect in external circuit, the method for integrally reducing lug thickness has the following defects：
First, the mechanical performance for the part of lug being connect with external circuit reduces, for example, be easily broken off, deform, to
The service life of battery reduces, and will be easier to occur falling because caused by being broken lug when the electronic equipments such as mobile phone are using the battery
Electric problem；
Second, lug is limited to the influence of carrier ability, and single reduction lug thickness will increase extremely periotic production
Heat；To ensure the electron transport ability of a uniform section, toward contact increase lug width while reducing lug thickness, but this
The problem of excessively space being tied up there are still the assembling and lug that are unfavorable for battery and being unfavorable for other electronic components layout.
Utility model content
To overcome the problems in correlation technique, the disclosure provides electrode and the polymerization of a kind of polymer Li-ion battery
Object lithium ion battery.
According to the first aspect of the embodiments of the present disclosure, a kind of electrode of polymer Li-ion battery, the electrode packet are provided
Pole piece and lug are included, the lug has the first part for being connected to the pole piece and stretches out the pole piece to be connect with external circuit
Second part, the width of the first part is more than the width of the second part, and the thickness of the first part is less than institute
State the thickness of second part.
Preferably, the second part and the first part substantially have rectangular shape, and the second part
Positioned at the centre of the first part in the width direction.
Preferably, the first part is located at the centre of the second part through-thickness.
Preferably, the thickness of the first part is 20 μm to 40 μm, and the width of the first part is 8mm to 20mm.
Preferably, the thickness of the second part is 60 μm to 200 μm, and the width of the second part is 3mm to 15mm.
Preferably, the first part and the second part are integrally formed.
According to the second aspect of the embodiment of the present disclosure, a kind of polymer Li-ion battery, including any of the above-described implementation are provided
Electrode described in scheme.
Preferably, the electrode is used as the anode and/or cathode of the polymer Li-ion battery
The technical scheme provided by this disclosed embodiment can include the following benefits：Lug is artificially divided into two
A region, and two regions have a respectively different sizes, first part broaden relative to second part is thinning, on the one hand,
The thickness that lug is located in winding-structure is reduced after pole piece forms winding-structure, improves lithium battery energy density, when
When battery for comparable size, the usage time of the electronic products such as mobile phone is extended, user is improved；On the other hand, it compares
The cross-sectional area of first part is also had adjusted in the prior art, this improves lug part current-carrying capability, is conducive to the equal of electric current
Even distribution reduces the risk of lug hot-spot.
It should be understood that above general description and following detailed description is only exemplary and explanatory, not
The disclosure can be limited.
Description of the drawings
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the disclosure
Example, and together with specification for explaining the principles of this disclosure.
Fig. 1 is a kind of structural schematic diagram of the electrode of polymer Li-ion battery shown according to an exemplary embodiment.
Fig. 2 is a kind of schematic diagram at the first visual angle of the lug of electrode shown according to an exemplary embodiment.
Fig. 3 is a kind of schematic diagram at the second visual angle of the lug of electrode shown according to an exemplary embodiment.
Reference sign：
10 electrodes
11 pole pieces
12 lugs
121 first parts
122 second parts
The width of b first parts
The width of B second parts
The thickness of h first parts
The thickness of H second parts.
Specific implementation mode
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all implementations consistent with this disclosure.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects be described in detail in claims, the disclosure.
The utility model discloses a kind of electrodes 10 of polymer Li-ion battery, in one embodiment, the battery pack
Pole piece 11 and lug are included, specifically includes anode pole piece, positive pole ear, cathode pole piece and negative lug, anode pole piece and cathode
Pole piece all has strip shape and can synchronize winding along its length and form winding-structure.
Fig. 1 is a kind of structural schematic diagram of the electrode of polymer Li-ion battery shown according to an exemplary embodiment.
For convenience of description, the length direction of pole piece 11 (left and right directions in such as Fig. 1) is defined as the width direction of lug, with pole piece 11
Thickness direction be defined as the thickness direction of lug (such as perpendicular to the direction of Fig. 1 papers).
Fig. 2 is a kind of schematic diagram at the first visual angle of the lug of electrode shown according to an exemplary embodiment；Fig. 3 is root
A kind of schematic diagram at the second visual angle of the lug of electrode shown according to an exemplary embodiment.As shown in Figures 2 and 3, b indicates the
The width of a part 121, B indicate that the width of second part 122, h indicate that the thickness of first part 121, H indicate second part
122 thickness.
As shown in Figure 1, lug is connected to pole piece 11 and stretches out pole piece 11 perpendicular to the coiling direction of pole piece 11, electric current from
Pole piece 11 is transferred to lug and can be further transferred to external circuit.
As shown in Fig. 2, lug be arranged to include the first part 121 being connect with pole piece 11 and stretch out pole piece 11 for
The second part 122 of external circuit connection, the width of first part 121 are set greater than second part 122, and first part
121 thickness is less than second part 122.Such lug can be formed in the following manner：
First, first part 121 and second part 122 have been divided according to lug script rectangular shape, wherein first
Points 121 and the boundary of second part 122 should be the position that lug corresponds to 11 edge of pole piece.
Then, the width for the first part 121 being connect with pole piece 11 is increased and reduces thickness, while being kept for second
Divide 122 shape size constant.
In this way, lug is artificially divided into two regions, and two regions have a respectively different sizes, first
Points 121 broaden relative to second part 122 is thinning, on the one hand, reduce lug after pole piece 11 forms winding-structure and be located at
Thickness in winding-structure improves lithium battery energy density, when the battery for comparable size, extends the electronics such as mobile phone
The usage time of product, improves user；On the other hand, the cross section of first part 121 is also had adjusted compared with the prior art
Product, this improves lug part current-carrying capability, is conducive to being uniformly distributed for electric current, reduces the risk of lug hot-spot.
Lug is formed except through aforesaid way, lug can also be formed by another way, in this kind of mode, step
It is rapid substantially identical as aforesaid way, it the difference is that only：By the width of the first part 121 being connect with pole piece 11 increase and incite somebody to action
While thickness reduces, also so that the thickness of second part 122 is further added by.In this way, the structure of second part 122 is enhanced,
Mechanical performance is increased, and is conducive to lug bending resistance, antitorque etc..
In this embodiment, as shown in Fig. 2, the first part 121 of lug and second part 122 substantially have rectangle shape
Shape, second part 122 are located substantially at the centre of first part 121 in the direction of the width, as shown in figure 3, first part 121 is in thickness
The centre of second part 122 is located substantially on degree direction.
In this way, lug integrally has symmetrical structure, on the one hand facilitate processing, is on the other hand conducive to uniformly dividing for electric current
Cloth, to be conducive to the charge-discharge performance of electrode 10.
In this embodiment, lug is formed as an entirety, and first part 121 and second part 122 are one at the time of molding
What body was formed.In this way, avoiding that there is seam between first part 121 and second part 122 and influence electronics flowing.
In unshowned another embodiment, the thickness of first part 121 is 20 μm to 40 μm, the width of first part 121
Degree is 8mm to 20mm.
The width and thickness of first part 121 should be in appropriate range, the thickness effect telecommunications of this part
The thickness of actual (real) thickness, this region is smaller, and the energy density of electrode 10 is bigger.While reducing the thickness of first part 121,
Width should suitably be increased, to ensure that certain electric current transmits area.
The increase of width also should it is appropriate again within the scope of, if width is excessive, can influence to be located at around lug
Pole piece 11 on active material area, occupy excessive active material area and influence the charge-discharge performance of battery, if width mistake
If small, then the reduction of corresponding thickness is limited, the raising of lithium battery energy density is also limited.
Thus, when the width and thickness of first part 121 is above-mentioned numerical value, the charge-discharge performance of battery can be taken into account not
It is impacted, and improve the energy density of lithium battery.
In unshowned another embodiment, the thickness of second part 122 is 60 μm to 200 μm, the width of second part 122
Degree is 3mm to 15mm.
The width and thickness of second part 122 should be in appropriate range, if the thickness of second part 122 is got over
The big then lug is by with more excellent mechanical performance, on the contrary, the lug will have if the thickness of second part 122 is smaller
Weaker mechanical performance.Anyway, the thickness of second part 122 should be more than the thickness of first part 121.
The width of second part 122 can be adjusted according to the case where package assembly, specifically, with reference to other electric devices
Layout and be that it reserves enough positions, can ensure the smooth installation of electrode 10.
When the width and thickness of second part 122 is in above-mentioned numberical range, it can either ensure the mechanicalness of electrode 10
It can be excellent, additionally it is possible to ensure the smooth installation of electrode 10 and other elements.
In other embodiments, the utility model also provides a kind of polymer Li-ion battery, with the various embodiments described above
In electrode 10 as anode either cathode or using the electrode 10 in the various embodiments described above as anode both with cathode.Just
Pole and cathode are assembled into battery in method in the prior art.
The polymer Li-ion battery can have advantageous effect identical with above-mentioned electrode 10.
Although polymer Li-ion battery and its electrode 10 are discussed in detail above, also the following
It needs to illustrate：
1. either anode pole piece 11 or cathode pole piece 11 can have other shapes in addition to a rectangle, such as calabash
Reed shape, trapezoidal etc..
2. second part 122 can also be offset to the side of the width direction of first part 121, first part 121 also may be used
To be offset to the side of the thickness direction of second part 122.
Those skilled in the art will readily occur to the disclosure after considering specification and putting into practice utility model disclosed herein
Other embodiments.This application is intended to cover any variations, uses, or adaptations of the disclosure, these modifications are used
Way or adaptive change follow the general principles of this disclosure and include undocumented in the art known of the disclosure
Common sense or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the disclosure are under
The claim in face is pointed out.
It should be understood that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present disclosure is only limited by the accompanying claims.
Claims (8)
1. a kind of electrode of polymer Li-ion battery, which is characterized in that the electrode includes pole piece and lug, the lug tool
There is the first part for being connected to the pole piece and stretches out second part of the pole piece to be connect with external circuit, the first part
Width be more than the width of the second part, the thickness of the first part is less than the thickness of the second part.
2. the electrode of polymer Li-ion battery according to claim 1, which is characterized in that the second part and described
First part substantially has rectangular shape, and the second part is located at the centre of the first part in the width direction.
3. the electrode of polymer Li-ion battery according to claim 2, which is characterized in that the first part is located at institute
State the centre of second part through-thickness.
4. the electrode of polymer Li-ion battery according to claim 1, which is characterized in that the thickness of the first part
It it is 20 μm to 40 μm, the width of the first part is 8mm to 20mm.
5. the electrode of polymer Li-ion battery according to claim 1, which is characterized in that the thickness of the second part
It it is 60 μm to 200 μm, the width of the second part is 3mm to 15mm.
6. the electrode of polymer Li-ion battery according to claim 1, which is characterized in that the first part with it is described
Second part is integrally formed.
7. a kind of polymer Li-ion battery, which is characterized in that including electrode as claimed in any one of claims 1 to 6.
8. polymer Li-ion battery according to claim 7, which is characterized in that the electrode is used as the polymer lithium
The anode and/or cathode of ion battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721836300.9U CN207624804U (en) | 2017-12-25 | 2017-12-25 | The electrode and polymer Li-ion battery of polymer Li-ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721836300.9U CN207624804U (en) | 2017-12-25 | 2017-12-25 | The electrode and polymer Li-ion battery of polymer Li-ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207624804U true CN207624804U (en) | 2018-07-17 |
Family
ID=62830130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721836300.9U Active CN207624804U (en) | 2017-12-25 | 2017-12-25 | The electrode and polymer Li-ion battery of polymer Li-ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207624804U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111948558A (en) * | 2019-05-16 | 2020-11-17 | 丰田自动车株式会社 | Battery inspection method, battery inspection device, and battery |
| CN114069165A (en) * | 2021-11-16 | 2022-02-18 | 远景动力技术(江苏)有限公司 | Battery core tab and battery core |
| CN115332737A (en) * | 2022-10-17 | 2022-11-11 | 宁德新能源科技有限公司 | Pole piece, electrochemical device and electronic device |
-
2017
- 2017-12-25 CN CN201721836300.9U patent/CN207624804U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111948558A (en) * | 2019-05-16 | 2020-11-17 | 丰田自动车株式会社 | Battery inspection method, battery inspection device, and battery |
| CN111948558B (en) * | 2019-05-16 | 2023-12-08 | 丰田自动车株式会社 | Battery inspection method, battery inspection device, and battery |
| CN114069165A (en) * | 2021-11-16 | 2022-02-18 | 远景动力技术(江苏)有限公司 | Battery core tab and battery core |
| CN115332737A (en) * | 2022-10-17 | 2022-11-11 | 宁德新能源科技有限公司 | Pole piece, electrochemical device and electronic device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5706526B2 (en) | Cable type secondary battery | |
| US8906535B2 (en) | Cable-type secondary battery | |
| US9306237B2 (en) | Cable-type secondary battery | |
| JP5492999B2 (en) | Cable type secondary battery | |
| EP2768059B1 (en) | Cable-type secondary battery | |
| CN207624804U (en) | The electrode and polymer Li-ion battery of polymer Li-ion battery | |
| US9755265B2 (en) | Anode for secondary battery and secondary battery having the same | |
| US9755266B2 (en) | Cable-type secondary battery | |
| US8877363B2 (en) | Cable-type secondary battery capable of wireless charge | |
| CN106531965A (en) | Pole piece assembly, cell and battery | |
| CN212571274U (en) | Lithium ion battery and electronic device | |
| KR20150134621A (en) | Flexible Battery Employed with a Plurality of Unit Cells | |
| CN114975864A (en) | Pole piece, electric core structure, lithium battery and electronic equipment | |
| CN212434666U (en) | Anode plate and lithium ion battery | |
| CN108400386A (en) | Improve the preparation method of the flexible battery of bending property | |
| CN207587928U (en) | A kind of shockproof polymer Li-ion battery | |
| CN104659329A (en) | Secondary battery | |
| CN203839448U (en) | Cylindrical battery cell with function of introducing single tab from side surface | |
| CN206210922U (en) | Pole piece component, battery core and battery | |
| CN103000950B (en) | Method for assembling battery cell | |
| CN208570838U (en) | A kind of lithium ion battery parallel connection chemical conversion simplified wiring device | |
| CN203574062U (en) | Safe high-power lithium ion battery | |
| CN207504090U (en) | Lithium ion cell positive ear and lithium ion battery | |
| CA2768416C (en) | Low noise battery | |
| CN206282928U (en) | Pole piece component, battery core and battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |