CN208111561U - A kind of thin lithium ion battery - Google Patents
A kind of thin lithium ion battery Download PDFInfo
- Publication number
- CN208111561U CN208111561U CN201820639373.7U CN201820639373U CN208111561U CN 208111561 U CN208111561 U CN 208111561U CN 201820639373 U CN201820639373 U CN 201820639373U CN 208111561 U CN208111561 U CN 208111561U
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- China
- Prior art keywords
- tab
- protective layer
- negative electrode
- electrode lug
- anode ear
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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
Abstract
The utility model belongs to technical field of electronic products, more particularly to a kind of thin lithium ion battery, including battery core, anode ear and negative electrode lug, the battery core includes positive plate, negative electrode tab and the diaphragm being stacked between positive/negative plate, the anode ear connects positive plate, the negative electrode lug connects negative electrode tab, the side of anode ear and negative electrode lug is provided with tab protective layer, the tab protective layer and anode ear, negative electrode lug and battery core connection, lithium ion battery provided by the utility model is provided with the tab protective layer of connection battery core and positive and negative tab in the side of positive and negative tab, when tab is bent by external force, tab protective layer can share part bending stress, to enhance the bend resistance ability of tab, avoid the phenomenon that being easy to appear fracture when lug bending or falling off, effectively improve the service life of battery.
Description
Technical field
The utility model belongs to technical field of electronic products, and in particular to a kind of thin lithium ion battery.
Background technique
With the development of informationized society, the electricity such as people's magnetic card used at present, smart card, identification card, bank card
The information content that subcard is stored is increasing, and tradition cannot be well adapted for the need of current social without the electronic card of power supply
It asks, therefore, in order to improve the practicability of electronic card, people apply thin lithium ion battery in electronic card to improve its information
Amount of storage.In general, the mode that lithium battery of the current application in various electronic cards generallys use welding is connect with circuit board,
But since above-mentioned electronic card inevitably will receive bending in carrying process, and in existing electronic card lithium battery pole ear structure bending resistance
Folding ability is poor, and when electronic card is by external force bending deformation, tab is easily snapped off or fallen off, and causes electronic card to fail, thus shadow
Its service life is rung, therefore, researching and developing a kind of thin lithium ion battery that bend resistance ability is strong to solve the above problems is very must
It wants.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, and providing one kind can be improved tab position bend resistance
The thin lithium ion battery of ability.
The utility model uses following technical scheme：
A kind of thin lithium ion battery, including battery core, anode ear and negative electrode lug, the battery core include positive plate, negative electrode tab
And it is stacked in the diaphragm between positive/negative plate, the anode ear connects positive plate, and the negative electrode lug connects negative electrode tab, anode ear
The side of negative electrode lug is provided with tab protective layer, the tab protective layer is connect with anode ear, negative electrode lug and the battery core.
Compared with prior art, lithium ion battery provided by the utility model is provided with connection electricity in the side of positive and negative tab
The tab protective layer of core and positive and negative tab, when tab is bent by external force, tab protective layer can share part bending stress, from
And the bend resistance ability of tab is enhanced, it avoids the phenomenon that being easy to appear fracture when lug bending or falling off, effectively improving electricity
The service life in pond.
Further, the other side of the anode ear and negative electrode lug is stained with the conducting resinl for connecting external circuit, leads
Electric glue extends anode ear and negative electrode lug, and conducting resinl extends anode ear and the part of negative electrode lug is connect with tab protective layer.
Further, the tab protective layer passes through bonding agent or double-sided adhesive layers and anode ear, negative electrode lug and electricity
Core connection, such as adhered to by existing Double-face gummed paper or epoxy resin；The tab protective layer is located at its height side
The anode ear and negative electrode lug are covered to the part for extending battery core；The tab protective layer is aluminum plastic film or PET film, above-mentioned pole
The connection type of ear protective layer and conducting resinl, structure is simple, is completely embedded between the two, is protected by the way that conducting resinl is connected to tab
On sheath, to increase the adhered area of conducting resinl, improve its adhesive ability, keep conductive glue stronger, improve battery with
Stable connection between external circuit.
Detailed description of the invention
Battery front view when Fig. 1 is the tab protective layer of embodiment one, conducting resinl is in integral structure
Battery rearview when Fig. 2 is the tab protective layer of embodiment one, conducting resinl is in integral structure
Fig. 3 be embodiment one tab protective layer in separate structure, conducting resinl be in integral structure when battery front view
Fig. 4 be embodiment one tab protective layer in separate structure, conducting resinl be in integral structure when battery rearview
Fig. 5 be embodiment one tab protective layer in integral structure, conducting resinl be in separate structure when battery front view
Fig. 6 be embodiment one tab protective layer in integral structure, conducting resinl be in separate structure when battery rearview
Fig. 7 be embodiment one tab protective layer in separate structure, conducting resinl be in separate structure when battery front view
Fig. 8 be embodiment one tab protective layer in separate structure, conducting resinl be in separate structure when battery rearview
Battery structure schematic diagram when Fig. 9 is the tab protective layer of embodiment two, conducting resinl is in integral structure
Figure 10 be embodiment two tab protective layer in separate structure, conducting resinl be in integral structure when battery structure signal
Figure
Figure 11 be embodiment two tab protective layer in integral structure, conducting resinl be in separate structure when battery structure signal
Figure
Figure 12 be embodiment two tab protective layer in separate structure, conducting resinl be in separate structure when battery structure signal
Figure
Figure 13 is the structural schematic diagram of the electronic equipment of embodiment three
Specific embodiment
Below in conjunction with Detailed description of the invention specific embodiment of the present utility model.
Embodiment one：
Referring to Fig. 1 to Fig. 8, the present embodiment provides a kind of battery, including battery core 1, anode ear 2 and negative electrode lug 3, the battery cores
1 includes positive plate, negative electrode tab and the diaphragm being stacked between positive/negative plate, and the anode ear 2 connects positive plate, the cathode
The side of the connection negative electrode tab of ear 3, anode ear 2 and negative electrode lug 3 is provided with tab protective layer 5, the tab protective layer 5 and anode ear
2, negative electrode lug 3 and battery core 1 connect.
The tab protective layer 5 includes following two set-up mode.
Referring to Fig. 1, as the first set-up mode, the tab protective layer 5 is structure as a whole, integrated tab protective layer
5 is compact-sized, convenient and fast connection with battery core 1 and positive and negative tab.
Referring to Fig. 3, as second of set-up mode, the tab protective layer 5 is separate structure comprising seperated first
Tab protective layer 5a and the second tab protective layer 5b, the first tab protective layer 5a connection battery core 1 and anode ear 2, described
Two tab protective layer 5b connection battery cores 1 and negative electrode lug 3, above-mentioned tab protective layer 5 are that the set-up mode of separate structure can be according to reality
The specification of border product is adhered in the position of corresponding tab, to effectively control the material cost of tab protective layer 5.
Referring to Fig. 1 and Fig. 2, the other side of the anode ear 2 and negative electrode lug 3 is stained with the conduction for connecting external circuit
Glue 4, conducting resinl 4 include following two set-up mode.
As the first set-up mode of conducting resinl 4, the conducting resinl 4 is structure as a whole；As depicted in figs. 1 and 2, work as pole
When ear protective layer 5 is structure as a whole, the conducting resinl 4 extends anode ear 2 and negative electrode lug 3, and conducting resinl 4 extends anode ear 2
It is connect with the part of negative electrode lug 3 with tab protective layer 5；As shown in Figure 3 and Figure 4, conductive when tab protective layer is separate structure
Glue 4 extends anode ear 2 and negative electrode lug 3, and conducting resinl 4 connects anode ear 2 and the first tab protective layer close to the part of anode ear 2
5a, conducting resinl 4 connects negative electrode lug 3 close to the part of negative electrode lug 3 and the second tab protective layer 5b, above-mentioned conducting resinl 4 are integrated knot
The set-up mode of structure is convenient and fast connection, secure and reliable connection.
As second of set-up mode of conducting resinl 4, the conducting resinl 4 is separate structure comprising seperated first is led
Electric glue 4a and the second conducting resinl 4b；As shown in Figure 5 and Figure 6, when tab protective layer 5 is structure as a whole, first conducting resinl
4a connection anode ear 2 and tab protective layer 5, the second conducting resinl 4b connection negative electrode lug 3 and tab protective layer 5；Such as Fig. 7 and figure
Shown in 8, when tab protective layer is separate structure, the first conducting resinl 4a connection anode ear 2 and the first tab protective layer 5a,
The second conducting resinl 4b connection negative electrode lug 3 and the second tab protective layer 5b, above-mentioned conducting resinl 4 are the set-up mode of separate structure
Can be pasted according to the developed width of tab and the length of tab protective layer 5, thus effectively control conducting resinl 4 material at
This.
Referring to Fig. 1 to Fig. 8, the tab protective layer 5 passes through bonding agent or double-sided adhesive layers and anode ear 2, negative electrode lug 3
And battery core 1 connects, such as coats epoxy resin by existing Double-face gummed paper or between battery core 1 and tab protective layer 5
Equal glue realization is adhered to；It is the width direction of battery core 1 by x direction definition shown in Fig. 1, by institute in the utility model
The y direction definition shown is the short transverse of battery core 1, and the z direction definition by shown in is the thickness direction of battery core 1, the conducting resinl 4
For anisotropic conductive adhesive paste, the width direction and short transverse along battery core 1 are non-conductive, and the thickness direction along battery core 1 is conductive；It is described
Tab protective layer 5 is located at the part covering anode ear 2 and negative electrode lug 3 that its short transverse extends battery core 1, specifically, institute
State tab protective layer 5 be located at its short transverse extend battery core 1 part height be more than or equal to tab height, such as
Tab protective layer 5 is higher than tab 3mm along the part that its short transverse extends battery core 1；The tab protective layer 5 be aluminum plastic film or
Person's PET film, the connection type of above-mentioned tab protective layer 5 and conducting resinl 4 is convenient and efficient, is completely embedded between the two, by that will lead
Electric glue 4 is connected on tab protective layer 5, to increase the adhered area of conducting resinl 4, improves its adhesive ability, keeps conducting resinl 4 viscous
Paste stronger stable connection between raising battery and external circuit.
Compared with prior art, battery provided by the utility model the side of battery core 1 be provided with while connecting battery core 1,
The tab protective layer 5 of anode ear 2, negative electrode lug 3, the tab protective layer 5 can share part bending stress, to enhance tab
Bend resistance ability avoids the phenomenon that being easy to appear fracture when lug bending or falling off；In addition, by the way that conducting resinl 4 is extended pole
The set-up mode for being partly adhered to tab protective layer 5 of ear increases the adhered area of conducting resinl 4, improves its adhesive force, makes
Its adherency is more firm, is effectively prevented the normal use that conducting resinl 4 is detached from tab and influences battery.
Embodiment two：
Referring to Fig. 9 to Figure 12, the difference between this embodiment and the first embodiment lies in the set-up mode of the tab protective layer
Difference, the battery core 3 of the present embodiment are coated with packaging film 30, and the one side of the packaging film 30 is located at close to one end of positive and negative tab
Battery core 1 is extended in upside into figure, to form the tab protective layer 5.
The implementation process of the present embodiment is as follows：Packaging film 30 is coated on to the outside of battery core 1 in the form of front and back is asymmetric,
Battery core 1 is stretched out upwardly in 30 side of packaging film after making cladding, and covers positive and negative tab, height and the battery core 1 of another side
Upper end is concordant, and the part for stretching out battery core 1 upwards forms the tab protective layer 5, followed by bonding agent or double-sided adhesive layers
Tab protective layer 5 is connected with anode ear 2 and negative electrode lug 3 respectively, conducting resinl 4 is finally pasted onto anode ear 2, negative electrode lug
3 and tab protective layer 5 on.
Compared with prior art, thin lithium ion battery provided in this embodiment not only increase tab bend resistance it is strong
It spends, enhance the adhesive ability of conducting resinl 4, keep its adherency stronger, and served as using the part that packaging film 30 stretches out battery core 1
Tab protective layer 5 makes battery structure have more globality, more compact structure, more beautiful.
Other technical characteristics of the present embodiment are identical as embodiment one, are not described in detail herein.
Embodiment three：
Referring to Figure 13, the present embodiment provides a kind of electronic equipment of the battery 100 of Application Example one or embodiment two,
It includes above-mentioned battery 100 and the circuit board 200 that is electrically connected with the battery 100, is respectively equipped on the circuit board 200
Contact area 201 corresponding with anode ear 2 and negative electrode lug 3, the anode ear 2 and negative electrode lug 3 pass through conducting resinl 4 and contact zone
Connection is realized in domain 201, and above-mentioned electronic equipment is protected due to using battery 100 provided by the utility model, conducting resinl 4 in tab
It is preferably adhered on tab and circuit board 200 under the supporting role of layer 5, to make the company between circuit board 200 and battery 100
Connect it is more solid and reliable, in addition, the setting of tab protective layer 5 can prevent electronic equipment bending when be easy to appear tab fracture or
The phenomenon that falling off, to improve the service life of electronic equipment.
According to the disclosure and teachings of the above specification, the utility model those skilled in the art can also be to above-mentioned reality
The mode of applying is changed and is modified.Therefore, the utility model is not limited to specific embodiment disclosed and described above, right
Some modifications and changes of the utility model should also be as falling into the protection scope of the claims of the present utility model.In addition, to the greatest extent
It is used some specific terms in pipe this specification, these terms are merely for convenience of description, not to the utility model
Constitute any restrictions.
Claims (10)
1. a kind of thin lithium ion battery, including battery core, anode ear and negative electrode lug, the battery core include positive plate, negative electrode tab with
And it is stacked in the diaphragm between positive/negative plate, the anode ear connects positive plate, and the negative electrode lug connects negative electrode tab, and feature exists
In：The side of anode ear and negative electrode lug is provided with tab protective layer, the tab protective layer and anode ear, negative electrode lug and described
Battery core connection.
2. a kind of thin lithium ion battery according to claim 1, it is characterised in that：The battery core is coated with packaging film,
Extend battery core and form the tab protective layer in one end that the one side of the packaging film is located at close positive and negative tab.
3. a kind of thin lithium ion battery according to claim 1 or 2, it is characterised in that：The tab protective layer includes
Seperated the first tab protective layer and the second tab protective layer, the first tab protective layer connection battery core and anode ear, it is described
Second tab protective layer connects battery core and negative electrode lug.
4. a kind of thin lithium ion battery according to claim 1 or 2, it is characterised in that：The anode ear and negative electrode lug
The other side be stained with the conducting resinl for connecting external circuit, conducting resinl extends anode ear and negative electrode lug, and conducting resinl extends
The part of anode ear and negative electrode lug is connect with tab protective layer out.
5. a kind of thin lithium ion battery according to claim 4, it is characterised in that：The conducting resinl includes seperated the
One conducting resinl and the second conducting resinl, the described first conductive glue connection anode ear and tab protective layer, the described second conductive glue connection
Negative electrode lug and tab protective layer.
6. a kind of thin lithium ion battery according to claim 3, it is characterised in that：The anode ear and negative electrode lug it is another
Side is stained with the conducting resinl for connecting external circuit, and conducting resinl extends anode ear and negative electrode lug, and conducting resinl is close to anode
The part connection anode ear of ear and the first tab protective layer, conducting resinl connect negative electrode lug and the second tab close to the part of negative electrode lug
Protective layer.
7. a kind of thin lithium ion battery according to claim 6, it is characterised in that：The conducting resinl includes seperated the
One conducting resinl and the second conducting resinl, the described first conductive glue connection anode ear and the first tab protective layer, second conducting resinl
Connect negative electrode lug and the second tab protective layer.
8. a kind of thin lithium ion battery according to claim 1 or 2, it is characterised in that：The tab protective layer passes through
Bonding agent or double-sided adhesive layers are connect with anode ear, negative electrode lug and battery core.
9. a kind of thin lithium ion battery according to claim 1 or 2, it is characterised in that：The tab protective layer is located at
The part that its short transverse extends battery core covers the anode ear and negative electrode lug.
10. a kind of thin lithium ion battery according to claim 1 or 2, it is characterised in that：The tab protective layer is aluminium
Plastic film or PET film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820639373.7U CN208111561U (en) | 2018-04-28 | 2018-04-28 | A kind of thin lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820639373.7U CN208111561U (en) | 2018-04-28 | 2018-04-28 | A kind of thin lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208111561U true CN208111561U (en) | 2018-11-16 |
Family
ID=64114397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820639373.7U Expired - Fee Related CN208111561U (en) | 2018-04-28 | 2018-04-28 | A kind of thin lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208111561U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109888186A (en) * | 2019-03-06 | 2019-06-14 | 广州丰江电池新技术股份有限公司 | The pole piece of thin lithium ion battery assembles localization method |
| CN111725441A (en) * | 2019-03-22 | 2020-09-29 | 宁德新能源科技有限公司 | Battery packaging structure |
| WO2021217966A1 (en) * | 2020-04-30 | 2021-11-04 | 宁德时代新能源科技股份有限公司 | Electrode assembly, secondary battery, battery pack, and apparatus |
| US11264683B2 (en) | 2020-04-30 | 2022-03-01 | Contemporary Amperex Technology Co., Limited | Electrode assembly, secondary battery, battery pack and device |
-
2018
- 2018-04-28 CN CN201820639373.7U patent/CN208111561U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109888186A (en) * | 2019-03-06 | 2019-06-14 | 广州丰江电池新技术股份有限公司 | The pole piece of thin lithium ion battery assembles localization method |
| CN111725441A (en) * | 2019-03-22 | 2020-09-29 | 宁德新能源科技有限公司 | Battery packaging structure |
| CN111725441B (en) * | 2019-03-22 | 2023-08-11 | 宁德新能源科技有限公司 | Battery packaging structure |
| WO2021217966A1 (en) * | 2020-04-30 | 2021-11-04 | 宁德时代新能源科技股份有限公司 | Electrode assembly, secondary battery, battery pack, and apparatus |
| KR20210134935A (en) * | 2020-04-30 | 2021-11-11 | 컨템포러리 엠퍼렉스 테크놀로지 씨오., 리미티드 | Electrode assemblies, secondary batteries, battery packs and devices |
| EP3933994A4 (en) * | 2020-04-30 | 2022-01-05 | Contemporary Amperex Technology Co., Limited | Electrode assembly, secondary battery, battery pack, and apparatus |
| US11264683B2 (en) | 2020-04-30 | 2022-03-01 | Contemporary Amperex Technology Co., Limited | Electrode assembly, secondary battery, battery pack and device |
| JP2022535314A (en) * | 2020-04-30 | 2022-08-08 | 寧徳時代新能源科技股▲分▼有限公司 | Electrode assembly, secondary battery, battery pack and device |
| KR102600439B1 (en) * | 2020-04-30 | 2023-11-09 | 컨템포러리 엠퍼렉스 테크놀로지 씨오., 리미티드 | Electrode assemblies, secondary batteries, battery packs and devices |
| JP7383034B2 (en) | 2020-04-30 | 2023-11-17 | 寧徳時代新能源科技股▲分▼有限公司 | Electrode assemblies, secondary batteries, battery packs and devices |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181116 Termination date: 20210428 |