CN109037790A - A kind of lithium battery of high stability and thermal diffusivity - Google Patents
A kind of lithium battery of high stability and thermal diffusivity Download PDFInfo
- Publication number
- CN109037790A CN109037790A CN201810889488.6A CN201810889488A CN109037790A CN 109037790 A CN109037790 A CN 109037790A CN 201810889488 A CN201810889488 A CN 201810889488A CN 109037790 A CN109037790 A CN 109037790A
- Authority
- CN
- China
- Prior art keywords
- core
- shell
- high stability
- gum band
- thermal diffusivity
- 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.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/654—Means for temperature control structurally associated with the cells located inside the innermost case of the cells, e.g. mandrels, electrodes or electrolytes
-
- 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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
Abstract
The present invention discloses the lithium battery of a kind of high stability and thermal diffusivity, including shell, positioned at the intracorporal battery core of shell and is injected into the intracorporal electrolyte of shell, and battery core includes core, the swelling gum band being helically wound around outside core；Before electrolyte injection, the inner wall clearance fit of swelling gum band and shell；After electrolyte injection, the inner wall of swelling gum band and shell is adhesively fixed.The present invention is spirally wound on outside core using swelling gum band, and swelling gum band facilitates and battery core is fitted into shell far from core side and inner walls clearance fit；After swelling gum band and electrolyte contacts, it is swollen under the action of soaking of electrolyte, its structure is set to change and be adhesively fixed with the inner wall of shell, with abut stationary phase ratio, it can further avoid the relative position between battery core and shell to change and pole piece damage or solder joint is caused to loosen, prevent the internal resistance of battery core bad；The lithium battery of high stability and thermal diffusivity of the invention has good heat dissipation performance.
Description
Technical field
The present invention relates to battery technology fields, and in particular to a kind of lithium battery of high stability and thermal diffusivity.
Background technique
Currently, existing cylinder battery winding core mainly uses two kinds of structures, copper foil outsourcing and diaphragm outsourcing.(1), outside copper foil
Packet stop adhesive rubberizing mode is the circle of core axial ends rubberizing one, and gummed paper does not have the PET gummed paper of swelling behavior, this side generally
Formula disadvantage is that core shaking amplitude in shell is big, easily leads to pole piece damage, and solder joint loosening causes internal resistance bad；Core stress
Expansion is uneven, easily deforms (2), diaphragm outsourcing stop adhesive rubberizing mode is that gummed paper is completely covered in core outer ring, this mode
Gummed paper area coverage is big, is unfavorable for core heat dissipation, poor safety performance.
Summary of the invention
The purpose of the present invention is to provide the lithium batteries of a kind of high stability and thermal diffusivity, caused by can preventing core from shaking
Pole piece damage and internal resistance are bad, improve core caused by core expansion discontinuity and deform, and improve core heat dissipation, promote peace
Full performance.
To achieve this purpose, the present invention adopts the following technical scheme:
The lithium battery of a kind of high stability and thermal diffusivity is provided, including shell, is located at the intracorporal battery core of the shell and injection
To the intracorporal electrolyte of the shell, the battery core includes core, the swelling gum band being helically wound around outside the core；
Before the electrolyte injection, the inner wall clearance fit of the swelling gum band and the shell；The electrolyte injection
Afterwards, the inner wall of the swelling gum band and the shell is adhesively fixed.
A kind of optimal technical scheme of lithium battery as the high stability and thermal diffusivity, the swelling gum band glue
Patch mode is to be helically wound around on the outside of the core.
A kind of optimal technical scheme of lithium battery as the high stability and thermal diffusivity, along the axis of the core
To there are gaps between swelling gum band described in two adjacent rings.
A kind of optimal technical scheme of lithium battery as the high stability and thermal diffusivity, along the axis of the core
To the gap between swelling gum band described in two adjacent rings is 1~30mm.
A kind of optimal technical scheme of lithium battery as the high stability and thermal diffusivity, along the axis of the core
To the gap between swelling gum band described in two adjacent rings is equal.
A kind of optimal technical scheme of lithium battery as the high stability and thermal diffusivity, the width of the swelling gum band
Degree is 1~30mm.
A kind of optimal technical scheme of lithium battery as the high stability and thermal diffusivity, the swelling gum band is along it
The both ends of length direction are Nian Jie with the winding end of the metal foil respectively, and two adhesive spots are respectively adjacent to the core along its axis
To both ends.
A kind of optimal technical scheme of lithium battery as the high stability and thermal diffusivity, the swelling gum band are
Bright structure.
A kind of optimal technical scheme of lithium battery as the high stability and thermal diffusivity, the metal foil are copper material
Matter.
A kind of optimal technical scheme of lithium battery as the high stability and thermal diffusivity, the shell are steel
Matter.
Beneficial effects of the present invention: the present invention is using swelling gum band as stop adhesive, side of the swelling gum band far from core
With the inner wall clearance fit of shell, facilitate and battery core is fitted into shell, after electrolyte contacts, swelling gum band is in electrolyte
Action of soaking under be swollen, so that the structure of swelling gum band is changed and is adhesively fixed with the inner wall of shell, it is solid with abutting
Surely it compares, the relative position between battery core and shell can be further avoided and change and lead to pole piece damage or solder joint pine
It is dynamic, prevent the internal resistance of battery core bad；Moreover, swelling gum band spiral wound both can guarantee core uniform stressed outside core
Expansion improves core deformation；The effective area for reducing gummed paper covering core again is conducive to core and radiates, promotes battery core safety
Energy.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the high stability of the embodiment of the present invention and the lithium battery of thermal diffusivity.
Fig. 2 is the cross-sectional view of the high stability of the embodiment of the present invention and the lithium battery of thermal diffusivity.
In figure:
1, shell；2, battery core；21, core；22, swelling gum band.
Specific embodiment
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
In the description of the present invention, it is to be understood that, the orientation or positional relationship of the instructions such as term "inner", "outside" is base
In orientation or positional relationship shown in the drawings, it is merely for convenience of description of the present invention and simplification of the description, rather than indication or suggestion
Signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this
The limitation of invention.
In the description of the present invention unless specifically defined or limited otherwise, term " fixation " shall be understood in a broad sense, example
Such as, it may be a fixed connection, may be a detachable connection, or is integral；It can be mechanical connection, be also possible to be electrically connected；
Can be directly connected, can also indirectly connected through an intermediary, can be two components interiors connection or two components
Interaction relationship.For the ordinary skill in the art, above-mentioned term can be understood in the present invention with concrete condition
In concrete meaning.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature the "upper" of second feature include fisrt feature second feature just
Top and oblique upper, or first feature horizontal height is merely representative of higher than second feature.Fisrt feature is in the "lower" of second feature
It is directly below and diagonally below the second feature including fisrt feature, or is merely representative of first feature horizontal height less than second feature.
As shown in Figure 1, 2, the high stability of the present embodiment and the lithium battery of thermal diffusivity include shell 1, in shell 1
Battery core 2 and the electrolyte being injected into shell 1, battery core 2 include core 21 and the swelling being helically wound around outside metal foil 21
Adhesive tape 22；Before electrolyte injection, the inner wall clearance fit of swelling gum band 22 and shell 1；Electrolyte injection after, swelling gum band 22 with
The inner wall of shell 1 is adhesively fixed.The present embodiment is used as stop adhesive using swelling gum band 22, by it along side counterclockwise or clockwise
To being spirally wound on outside core 21, core 21 can be made to maintain stable structure not loose winding, swelling gum band 22 and electrolyte contacts it
Before, the inner wall clearance fit of side of the swelling gum band 22 far from core and shell 1 facilitates and battery core 2 is fitted into shell 1, with
After electrolyte contacts, swelling gum band 22 is swollen under the action of soaking of electrolyte, and the structure of swelling gum band 22 occurs
Change and be simultaneously adhesively fixed with the inner wall of shell 1, and abut stationary phase ratio, the phase between battery core 2 and shell 1 can be further avoided
It changes to position and pole piece damage or solder joint is caused to loosen, the internal resistance of battery core 2 is prevented to fluctuate；Moreover, swelling gum band 22
Spiral wound both can guarantee that core uniform stressed expands outside core, improve core deformation；Gummed paper covering volume is reduced again
The effective area of core is conducive to core and radiates, promotes battery core security performance.
The lithium battery of high stability and thermal diffusivity in the present embodiment is that (shell 1 and core are cylinder to cylindrical structure
Shape structure), but it is not limited to cylindrical structure, or square structure.
In the present embodiment, swelling gum band 22 (tf100 is bought from Tianjin Zhong Yun international trade Co., Ltd) impregnates it by electrolyte
Foaming, which swells to 1 inner wall of shell, afterwards contacts and is bonded, to directly be fixedly connected with shell 1 and core 21, avoids shell 1 and volume
It shakes between core 21.
In the present embodiment, there are gaps between the axial direction of the core, two adjacent rings swelling gum band 22, are convenient for battery core 2
Internal electronics can flow to negative electrode lug along the side wall of shell.
In the present embodiment, swelling gum band 22 preferably, between the axial direction of the core, two adjacent rings swelling gum band 22
Gap is 1~30mm, depending on the size of concrete foundation battery core 2, is fixed with guaranteeing that battery core 2 is stablized under the action of swelling gum band 22
In shell 1, while the dosage of swelling gum band 22 is saved as much as possible.
In the present embodiment, along the axial direction of the core, the gap between swelling gum band 22 described in two adjacent rings is equal, instant
Uniform winding can be such that battery core 2 steadily fixes by swelling gum band 22 to swollen adhesive tape 22 in the outside of core 21 in a spiral manner
In the inside of shell 1.
In the present embodiment, the width of swelling gum band 22 is 1~30mm, depending on the size of concrete foundation battery core 2.
In an of the invention preferred embodiment, the both ends of 22 its length direction of swelling gum band respectively with the core 21
Winding end bonding, two adhesive spots are respectively adjacent to core along its axial both ends, the winding end of core 21 can be made to stablize
It is fixed on the periphery of core.
Wherein, term " winding end " refers to exposed one end after core 21 is wound from the inside to the outside.
In the present embodiment, swelling gum band 22 is transparent configuration, can be with clear view to swelling when being bonded swelling gum band 22
The bonding situation of adhesive tape 22 can be adjusted in time when bubble in bonding process or bonding out-of-flatness.
It is to be understood that above-mentioned specific embodiment is only that presently preferred embodiments of the present invention and institute's application technology are former
Reason, within the technical scope of the present disclosure, variation that anyone skilled in the art is readily apparent that or
Replacement, should be covered by the scope of protection of the present invention.
Above by specific embodiment, the present invention is described, but the present invention is not limited to these specific implementations
Example.It will be understood by those skilled in the art that various modifications, equivalent replacement, variation etc. can also be done to the present invention.But this
A little transformation, all should be within protection scope of the present invention without departing from spirit of the invention.In addition, present specification and power
Some terms used in sharp claim are not limitation, it is only for convenient for description.
Claims (10)
1. the lithium battery of a kind of high stability and thermal diffusivity, which is characterized in that including shell, be located at the intracorporal battery core of the shell and
It is injected into the intracorporal electrolyte of the shell, the battery core includes core, the swelling gum band being helically wound around outside the core；
Before the electrolyte injection, the inner wall clearance fit of the swelling gum band and the shell；After the electrolyte injection, institute
It states swelling gum band and the inner wall of the shell is adhesively fixed.
2. the lithium battery of high stability according to claim 1 and thermal diffusivity, which is characterized in that the swelling gum band glues
Patch mode is to be helically wound around on the outside of the core.
3. the lithium battery of high stability according to claim 2 and thermal diffusivity, which is characterized in that along the axis of the core
To there are gaps between swelling gum band described in two adjacent rings.
4. the lithium battery of high stability according to claim 3 and thermal diffusivity, which is characterized in that along the axis of the core
To the gap between swelling gum band described in two adjacent rings is 1~30mm.
5. the lithium battery of high stability according to claim 4 and thermal diffusivity, which is characterized in that along the axis of the core
To the gap between swelling gum band described in two adjacent rings is equal.
6. the lithium battery of high stability according to claim 5 and thermal diffusivity, which is characterized in that the width of the swelling gum band
Degree is 1~30mm.
7. the lithium battery of high stability according to claim 6 and thermal diffusivity, which is characterized in that the swelling gum band is along it
The both ends of length direction are Nian Jie with the winding end of the metal foil respectively, and two adhesive spots are respectively adjacent to the core along its axis
To both ends.
8. the lithium battery of high stability according to any one of claims 1 to 7 and thermal diffusivity, which is characterized in that described molten
Swollen adhesive tape is transparent configuration.
9. the lithium battery pond of high stability according to any one of claims 1 to 7 and thermal diffusivity, which is characterized in that described
Metal foil is copper material.
10. the lithium battery of high stability according to any one of claims 1 to 7 and thermal diffusivity, which is characterized in that the shell
Body is steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810889488.6A CN109037790A (en) | 2018-08-07 | 2018-08-07 | A kind of lithium battery of high stability and thermal diffusivity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810889488.6A CN109037790A (en) | 2018-08-07 | 2018-08-07 | A kind of lithium battery of high stability and thermal diffusivity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109037790A true CN109037790A (en) | 2018-12-18 |
Family
ID=64648974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810889488.6A Pending CN109037790A (en) | 2018-08-07 | 2018-08-07 | A kind of lithium battery of high stability and thermal diffusivity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109037790A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114824287A (en) * | 2022-05-09 | 2022-07-29 | 江苏正力新能电池技术有限公司 | Battery core, battery module and battery pack |
| CN114824288A (en) * | 2022-05-09 | 2022-07-29 | 江苏正力新能电池技术有限公司 | Battery core, battery module and battery pack |
| CN114883562A (en) * | 2022-05-09 | 2022-08-09 | 江苏正力新能电池技术有限公司 | Battery core, battery module and battery pack |
| CN115028827A (en) * | 2022-06-15 | 2022-09-09 | 万华化学集团股份有限公司 | Phenyl polyether diol and preparation method thereof, thermoplastic polyurethane and lithium battery swelling adhesive tape |
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| CN104781951A (en) * | 2012-11-16 | 2015-07-15 | Lg化学株式会社 | Swelling tape for filling gap |
| CN104798223A (en) * | 2012-11-16 | 2015-07-22 | Lg化学株式会社 | Swelling tape for filling gap |
| CN105238286A (en) * | 2011-01-27 | 2016-01-13 | Lg化学株式会社 | Swelling tape for filling gap |
| CN206340623U (en) * | 2016-12-21 | 2017-07-18 | 广东欧珀移动通信有限公司 | Battery roll core, lithium battery and terminal |
| CN207517802U (en) * | 2017-12-13 | 2018-06-19 | 东莞市胜邦通讯配件科技有限公司 | A kind of novel polymer lithium ion battery group structure |
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2018
- 2018-08-07 CN CN201810889488.6A patent/CN109037790A/en active Pending
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| CN105238286A (en) * | 2011-01-27 | 2016-01-13 | Lg化学株式会社 | Swelling tape for filling gap |
| CN104781951A (en) * | 2012-11-16 | 2015-07-15 | Lg化学株式会社 | Swelling tape for filling gap |
| CN104798223A (en) * | 2012-11-16 | 2015-07-22 | Lg化学株式会社 | Swelling tape for filling gap |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114824287A (en) * | 2022-05-09 | 2022-07-29 | 江苏正力新能电池技术有限公司 | Battery core, battery module and battery pack |
| CN114824288A (en) * | 2022-05-09 | 2022-07-29 | 江苏正力新能电池技术有限公司 | Battery core, battery module and battery pack |
| CN114883562A (en) * | 2022-05-09 | 2022-08-09 | 江苏正力新能电池技术有限公司 | Battery core, battery module and battery pack |
| CN114883562B (en) * | 2022-05-09 | 2024-05-24 | 江苏正力新能电池技术有限公司 | Electric core, battery module and battery package |
| CN114824287B (en) * | 2022-05-09 | 2024-05-24 | 江苏正力新能电池技术有限公司 | Electric core, battery module and battery package |
| CN114824288B (en) * | 2022-05-09 | 2024-05-24 | 江苏正力新能电池技术有限公司 | Electric core, battery module and battery package |
| CN115028827A (en) * | 2022-06-15 | 2022-09-09 | 万华化学集团股份有限公司 | Phenyl polyether diol and preparation method thereof, thermoplastic polyurethane and lithium battery swelling adhesive tape |
| CN115028827B (en) * | 2022-06-15 | 2023-12-19 | 万华化学集团股份有限公司 | Phenyl polyether glycol and preparation method thereof, thermoplastic polyurethane and lithium battery swelling adhesive tape |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181218 |