CN211605213U - Lithium ion battery - Google Patents
Lithium ion battery Download PDFInfo
- Publication number
- CN211605213U CN211605213U CN201922486245.0U CN201922486245U CN211605213U CN 211605213 U CN211605213 U CN 211605213U CN 201922486245 U CN201922486245 U CN 201922486245U CN 211605213 U CN211605213 U CN 211605213U
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- Prior art keywords
- sealing
- tab
- lithium ion
- ion battery
- glue
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 33
- 238000007789 sealing Methods 0.000 claims abstract description 115
- 239000003292 glue Substances 0.000 claims abstract description 84
- 239000010410 layer Substances 0.000 claims abstract description 71
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000012790 adhesive layer Substances 0.000 claims abstract description 28
- 239000000565 sealant Substances 0.000 claims description 21
- 239000000835 fiber Substances 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 8
- 125000003118 aryl group Chemical group 0.000 claims description 6
- 229920000728 polyester Polymers 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 description 15
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920006280 packaging film Polymers 0.000 description 3
- 239000012785 packaging film Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000003571 electronic cigarette Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
Images
Classifications
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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
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
A lithium ion battery comprises an anode, a cathode, an inner core, a shell and a tab, wherein the inner core is accommodated in the shell, so the anode and the cathode are respectively electrically connected with the inner core, the tab is used for being electrically connected with the anode or the cathode, the tab comprises a tab body, a high-temperature resistant sealing element and a water-resistant adhesive layer, the tab body is sleeved with the water-resistant adhesive layer, and the high-temperature resistant sealing element is adhered to a partial area of the water-resistant adhesive layer. The utility model discloses a lithium ion battery is through setting up positive pole, negative pole, inner core, casing and utmost point ear to adopt the structure that resistant glue film and first yellow glue sealing layer and second yellow glue sealing layer fuse to glue as utmost point ear, make the sealing performance of utmost point ear obtain improving, improve the sealing performance of battery from this, and can solve the shortcoming that yellow glue utmost point ear was intake easily, thereby make the wholeness ability of battery obtain improving.
Description
Technical Field
The utility model relates to a technical field is made to the battery, especially relates to a lithium ion battery.
Background
The lithium ion battery is widely applied to smart phones, watches, wristbands, sound equipment, electronic cigarettes and the like, and along with the increasing requirement of consumer customers on the cycle performance of the lithium ion battery, particularly small batteries, the sealing performance and the machinability of the small batteries are always difficult, so that the small lithium ion battery needs to be sealed for a long time without leakage when being designed. The lithium ion battery is sealed mainly to have two sealed points, one is that battery side plastic-aluminum packaging film CPP glues and plastic-aluminum packaging film CPP glues high temperature and melts sealed mutually, and another sealed point is that top packaging film CPP glue film and utmost point ear outmost CPP glue seal.
At present, three tabs are generally selected for top sealing processing of a lithium ion battery, namely a white glue tab, a black glue tab and a yellow glue tab, under general conditions, the tabs of the lithium ion battery are all selected from the white glue tabs, the sealing performance of the tabs is good, but the shoulder width requirement of the tabs is wide, when a small battery is used, poor sealing is easily caused at glue overlapping parts, and each type needs an independent packaging clamp, so that the production cost is increased, the time cost is also increased, and the exposed tab glue is easy to deform and soft couch under the condition of heating, is not beneficial to subsequent processing, and causes less white glue to be used by the small battery; the second sealing structure is a black glue tab, the tab is simple to seal, the tab has small shoulder width, the small battery generally uses black glue, the small battery is a more sealing mode used by the conventional small battery, but the sealing mode has poor safety, when the small battery is heated and fused and sealed at high temperature, the packaging effect is not better than that of hard sealing of a white glue tab, the risk is that the leakage risk is easily caused due to poor battery packaging, and an externally exposed tab glue is easily deformed to form a soft couch under the condition of heating; the third sealing material is a tab made of yellow glue, the sealing mode of the material is simple, the width of a tab shoulder is small, the tab glue contains wholly aromatic polyester fibers, the high-temperature resistant material can prevent the packaging of the tab from deforming soft couch, the processing performance is good, and the material has the characteristics of long service life, high reliability, low production cost and high packaging efficiency. Therefore, how to design a lithium ion battery which is suitable for a small battery and has high sealing performance is a problem to be solved by developers in the field.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the weak point among the prior art, provide a lithium ion battery who is applicable to small-size battery and sealing performance is higher.
The purpose of the utility model is realized through the following technical scheme:
a lithium ion battery comprises an anode, a cathode, an inner core, a shell and a tab, wherein the inner core is accommodated in the shell, so the anode and the cathode are respectively and electrically connected with the inner core, the tab is used for being electrically connected with the anode or the cathode, the tab comprises a tab body, a high-temperature resistant sealing element and a water-resistant adhesive layer, the tab body is sleeved with the water-resistant adhesive layer, and the high-temperature resistant sealing element is adhered to a partial area of the water-resistant adhesive layer.
In one embodiment, a sealing installation channel is arranged on the water-resistant adhesive layer, the tab body penetrates through the sealing installation channel, a first sealing groove is formed in one end of the water-resistant adhesive layer, and a second sealing groove is formed in the other end of the water-resistant adhesive layer.
In one embodiment, the high temperature-resistant sealing element comprises a first sealant layer and a second sealant layer, the first sealant layer is disposed in the first sealing groove, and the second sealant layer is disposed in the second sealing groove.
In one embodiment, the number of the first sealing grooves is two, and the two first sealing grooves are arranged in parallel.
In one embodiment, the tab body is located between two of the first sealing grooves.
In one embodiment, the number of the second sealing grooves is two, and the two second sealing grooves are arranged in parallel.
In one embodiment, the tab body is located between two of the second sealing grooves.
In one embodiment, the first sealant layer and the second sealant layer are symmetrically disposed.
In one embodiment, the water-resistant adhesive layer is a CPP adhesive layer.
In one embodiment, the first and second yellow glue sealing layers are wholly aromatic polyester fiber layers.
Compared with the prior art, the utility model discloses at least, following advantage has:
the utility model discloses a lithium ion battery is through setting up positive pole, negative pole, inner core, casing and utmost point ear to adopt the structure that resistant glue film and first yellow glue sealing layer and second yellow glue sealing layer fuse to glue as utmost point ear, make the sealing performance of utmost point ear obtain improving, improve the sealing performance of battery from this, and can solve the shortcoming that yellow glue utmost point ear was intake easily, thereby make the wholeness ability of battery obtain improving.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a lithium ion battery according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a tab of the lithium ion battery in fig. 1.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
It is noted that as used herein, reference to an element being "connected" to another element also means that the element is "in communication" with the other element, and fluid can be in exchange communication between the two.
In one embodiment, a lithium ion battery includes a positive electrode, a negative electrode, an inner core, a case, and a tab, where the inner core is accommodated in the case, so that the positive electrode and the negative electrode are electrically connected to the inner core, the tab is used to be electrically connected to the positive electrode or the negative electrode, the tab includes a tab body, a high temperature resistant sealing element, and a water-resistant adhesive layer, the tab body is sleeved with the water-resistant adhesive layer, and the high temperature resistant sealing element is adhered to a partial region of the water-resistant adhesive layer. The utility model discloses a lithium ion battery is through setting up positive pole, negative pole, inner core, casing and utmost point ear to adopt the structure that resistant glue film and first yellow glue sealing layer and second yellow glue sealing layer fuse to glue as utmost point ear, make the sealing performance of utmost point ear obtain improving, improve the sealing performance of battery from this, and can solve the shortcoming that yellow glue utmost point ear was intake easily, thereby make the wholeness ability of battery obtain improving.
The above-described lithium ion battery is better illustrated to better understand the concept of the lithium ion battery. Referring to fig. 1 and 2, a lithium ion battery 10 includes an anode, a cathode, an inner core 100, a case 200, and a tab 300, wherein the inner core 100 is accommodated in the case 200, the anode and the cathode are respectively electrically connected to the inner core, the tab 300 is used for electrically connecting to the anode or the cathode, the tab 300 includes a tab body 310, a high temperature resistant sealing member 320, and a water-resistant adhesive layer 330, the tab body 310 is sleeved with the water-resistant adhesive layer 330, and the high temperature resistant sealing member 320 is adhered to a partial region of the water-resistant adhesive layer 320.
The positive electrode, the negative electrode, and the core 100 are respectively disposed in the case 200, and the case 200 is encapsulated by injecting an electrolyte, thereby forming a battery cell. In this embodiment, the tab structures of the positive electrode and the negative electrode are the tabs 300, so that the high temperature seal 320 and the housing 200 can be fused and sealed during the sealing operation, and the moisture in the outside air can be prevented from entering the housing 200 through the waterproof adhesive layer 330, thereby improving the safety performance of the battery.
Referring to fig. 2 again, a sealing installation channel is disposed on the water-resistant adhesive layer 330, the tab body 310 penetrates through the sealing installation channel, a first sealing groove 331 is disposed at one end of the water-resistant adhesive layer 330, and a second sealing groove 332 is disposed at the other end of the water-resistant adhesive layer 330. The high temperature resistant sealing member 320 includes a first sealant 321 and a second sealant 322, the first sealant 321 is disposed in the first sealing recess 331, and the second sealant 322 is disposed in the second sealing recess 332.
It should be noted that, the tab body 310 is provided with a sealing glue coating area, and the sealing glue coating area may be disposed at any position of the tab body 310, for example, the sealing glue coating area is located at the center of the tab body 310, so that the waterproof glue layer 330 and the high temperature resistant sealing element 320 may be disposed at the sealing glue coating area, and the waterproof glue layer 330 and the high temperature resistant sealing element 320 are located at the center of the tab body 310. Be provided with the sealed installation passageway on resistant glue film 330, sealed installation passageway is worn to establish by utmost point ear body 310, and resistant glue film 330 is located sealed glue coating district department, promptly, resistant glue film 330 wraps up the cover with utmost point ear body 310 sealed glue coating district to can play sealed effect when the top seal adds man-hour, and can improve sealing performance. First sealed recess 331 has been seted up to the one end of resistant glue layer 330, second sealed recess 332 has been seted up to the other end of resistant glue layer 330, high temperature resistant sealing member 320 includes first yellow glue sealing layer 321 and second yellow glue sealing layer 322, first yellow glue sealing layer 321 sets up in first sealed recess 331, second yellow glue sealing layer 322 sets up in second sealed recess 332, thus, can carry out the position with first yellow glue sealing layer 321 through first sealed recess 331 and prescribe a limit to the position to second yellow glue sealing layer 322 through second sealed recess 332, make first yellow glue sealing layer 321 and second yellow glue sealing layer 322 be located resistant glue layer 330 both ends respectively from this, thereby be convenient for sealed operation. Specifically, the tab body 310 adopts a structure that the first and second yellow glue sealing layers 321 and 322 are fused by the water-resistant glue layer 330, so that the shoulder width of the tab can be reduced in the actual sealing operation, and the tab can be suitable for a small-sized battery, meanwhile, the first and second yellow glue sealing layers 321 and 322 are all wholly aromatic polyester fiber layers, so that the high temperature resistance of the tab can be improved, and the tab cannot deform and collapse during packaging, so that the service life and reliability of the battery can be improved, and moreover, because the first and second yellow glue sealing layers 321 and 322 have better high temperature resistance, generally, the melting point of the wholly aromatic polyester fiber layer is 300-400 ℃, and the packaging temperature during packaging of the battery is far lower than that of the wholly aromatic polyester fiber layer, in the actual packaging operation, the packaging can be directly performed by the way of heating the upper copper block and the lower silica gel pad, and the soft collapse of the lugs can not be caused, so that the batteries with different specifications are packaged and fixed without designing a specific packaging jig, and the packaging operation of the batteries with multiple specifications can be realized on one packaging machine, thereby improving the packaging efficiency and reducing the production cost.
In order to prevent that the moisture in the air from getting into the battery from the fibrous layer of first yellow glue sealing layer 321 and second yellow glue sealing layer 322, this application adopts resistant glue layer 330 to fuse first yellow glue sealing layer 321 and second yellow glue sealing layer 322 fixedly, and resistant glue layer 330 is the CPP glue film to have better leakproofness, can carry out effectual blockking to aqueous vapor. In actual processing, the first yellow glue sealing layer 321 and the second yellow glue sealing layer 322 are fused at two ends of the water-resistant glue layer 330, and when moisture in the air enters the battery from the fiber layers of the first yellow glue sealing layer 321 and the second yellow glue sealing layer 322, the water-resistant glue layer 330 can play a role in blocking, so that the moisture in the air is prevented from entering the battery from the fiber layers of the first yellow glue sealing layer 321 and the second yellow glue sealing layer 322, and the sealing performance of the battery is improved.
In one embodiment, two first sealing grooves are arranged, the two first sealing grooves are arranged in parallel, and the tab body is positioned between the two first sealing grooves, so that the first yellow glue sealing layers 321 can be positioned on two sides of the tab body, the sealing performance can be improved, and the overall structural strength can be improved; for another example, two second sealing grooves are arranged and arranged in parallel, and the tab body is located between the two second sealing grooves, so that the first yellow glue sealing layers 321 can be located on two sides of the tab, the sealing performance can be improved, and the overall structural strength can be improved; for another example, the first sealant layer and the second sealant layer are symmetrically disposed, that is, the first sealant layer and the second sealant layer are respectively located at two ends of the water-resistant adhesive layer 330, so that the structural strength of the whole structure can be improved, and the sealing performance of the battery during packaging can be improved.
Referring to fig. again, a water-blocking portion 333 is disposed between the first sealing recess 331 and the second sealing recess 332, and the water-blocking portion 333 is used for blocking moisture in the air.
It should be noted that, when moisture in the air enters the battery from the fiber layers of the first and second sealant layers 321 and 322, the moisture is blocked by the water-ingress-preventing blocking portion 333 and does not enter the inside of the battery, thereby preventing the battery from being out of service due to moisture ingress.
Compared with the prior art, the utility model discloses at least, following advantage has:
the utility model discloses a lithium ion battery 10 is through setting up positive pole, negative pole, inner core 100, casing 200 and utmost point ear 300 to adopt the structure that resistant glue film 330 and first yellow glue sealing layer and second yellow glue sealing layer fuse to glue as utmost point ear, make utmost point ear 300's sealing performance obtain improving, improve the sealing performance of battery from this, and can solve the shortcoming that yellow glue utmost point ear was intake easily, thereby make the wholeness ability of battery obtain improving.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A lithium ion battery comprises an anode, a cathode, an inner core, a shell and a tab, wherein the inner core is accommodated in the shell, so the anode and the cathode are respectively electrically connected with the inner core, the tab is used for electrically connecting with the anode or the cathode,
the tab comprises a tab body, a high-temperature-resistant sealing element and a water-resistant adhesive layer, the tab body is sleeved with the water-resistant adhesive layer, and the high-temperature-resistant sealing element is adhered to a partial area of the water-resistant adhesive layer.
2. The lithium ion battery of claim 1, wherein a sealing installation channel is disposed on the water-resistant adhesive layer, the tab body penetrates through the sealing installation channel, a first sealing groove is formed at one end of the water-resistant adhesive layer, and a second sealing groove is formed at the other end of the water-resistant adhesive layer.
3. The lithium ion battery of claim 2, wherein the high temperature seal comprises a first sealant layer and a second sealant layer, the first sealant layer being disposed in the first sealing groove, the second sealant layer being disposed in the second sealing groove.
4. The lithium ion battery of claim 2, wherein there are two first sealing grooves, and the two first sealing grooves are arranged in parallel.
5. The lithium ion battery of claim 4, wherein the tab body is located between two of the first sealing grooves.
6. The lithium ion battery of claim 2, wherein there are two second sealing grooves, and the two second sealing grooves are arranged in parallel.
7. The lithium ion battery of claim 6, wherein the tab body is located between two of the second sealing grooves.
8. The lithium ion battery of claim 3, wherein the first sealant layer is symmetrically disposed with respect to the second sealant layer.
9. The lithium ion battery of claim 1, wherein the water-resistant glue layer is a CPP glue layer.
10. The lithium ion battery of claim 3, wherein the first and second yellow glue sealing layers are both wholly aromatic polyester fiber layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922486245.0U CN211605213U (en) | 2019-12-30 | 2019-12-30 | Lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922486245.0U CN211605213U (en) | 2019-12-30 | 2019-12-30 | Lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211605213U true CN211605213U (en) | 2020-09-29 |
Family
ID=72599293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922486245.0U Active CN211605213U (en) | 2019-12-30 | 2019-12-30 | Lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211605213U (en) |
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2019
- 2019-12-30 CN CN201922486245.0U patent/CN211605213U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230901 Address after: No.38, Huifeng 7th Road, Zhongkai high tech Zone, Huizhou City, Guangdong Province Patentee after: EVE ENERGY Co.,Ltd. Address before: 516006 63 District, Hui Tai Industrial Park, Zhongkai hi tech Zone, Huizhou, Guangdong Patentee before: Huizhou Yiwei Energy Battery Co.,Ltd. |