CN202585548U - Polymer lithium battery - Google Patents
Polymer lithium battery Download PDFInfo
- Publication number
- CN202585548U CN202585548U CN2012200821175U CN201220082117U CN202585548U CN 202585548 U CN202585548 U CN 202585548U CN 2012200821175 U CN2012200821175 U CN 2012200821175U CN 201220082117 U CN201220082117 U CN 201220082117U CN 202585548 U CN202585548 U CN 202585548U
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- CN
- China
- Prior art keywords
- layer
- electric core
- thickness
- lithium battery
- circuit board
- 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.)
- Expired - Lifetime
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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
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- Sealing Battery Cases Or Jackets (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The utility model belongs to the technical field of lithium batteries, in particular relates to a polymer lithium battery. The polymer lithium battery comprises a battery core and a packaging bag used for containing the battery core, wherein the front end of the battery core is sequentially embedded with a circuit board and a front cover, the rear end of the battery core is provided with a rear cover, the circuit board is electrically connected with the battery core by virtue of a lug arranged on the battery core, the lug led out from the circuit board is embedded on the front cover, the packaging bag comprises a protective layer, a heat seal layer and an aluminium foil layer arranged between the protective layer and the heat seal layer, and thickness of the aluminium foil layer is 0.3-5mm. Compared with the prior art, the polymer lithium battery has the advantages that an aluminium sheet arranged at the outer layer in the prior art is replaced by increasing the thickness of the aluminium foil layer in the packaging bag of the battery core, thickness and length space of a battery are reduced, space used for encapsulation is effectively reduced, and energy density of a polymer lithium ion battery is improved. Meanwhile, a processing technology is simplified, and processing cost is reduced.
Description
Technical field
The utility model belongs to technical field of lithium batteries, is specifically related to a kind of poly-lithium battery that can reduce cell package shell occupation space, have higher energy density.
Background technology
Along with the functional diversities, miniaturization and the use universalness that move portable equipment, people have proposed increasingly high requirement for miniaturization, energy density and the security performance as these device power supply (DPS)s.
Poly-lithium battery has been widely used as the power supply of these equipment as a kind of environmental protection new forms of energy with high-energy-density and good electrical properties and security performance.But; What the shell mechanism of commercial polymer Li-ion battery adopted is the packaged type of front and rear covers with aluminium flake (or steel disc) and label paper; Because the thickness and the packages limits of aluminium flake, it is bigger to take up room, not enough to the space availability ratio of battery; Cause the energy density of polymer Li-ion battery to reduce, limited the further application of polymer Li-ion battery.
In view of this, necessary a kind of poly-lithium battery that can reduce cell package shell occupation space, have higher energy density is provided.
The utility model content
The purpose of the utility model is: to the deficiency of prior art existence, and a kind of poly-lithium battery that can reduce cell package shell occupation space, have higher energy density is provided.
To achieve these goals, the utility model adopts following technical scheme:
A kind of poly-lithium battery comprises electric core, is used to hold the packaging bag of said electric core, and said electric core front end is embedded with circuit board and protecgulum successively; Electricity core rear end is provided with bonnet; Circuit board is electrically connected with electric core through the lug on the said electric core, and the lug of drawing from circuit board is embedded on protecgulum, through mould-injection fixedly protecgulum and electric core body; Equally; Through mould-injection fixedly bonnet and electric core body, said packaging bag comprises protective layer, hot sealing layer and the aluminium foil layer between said protective layer and hot sealing layer, and the thickness of said aluminium foil layer is 0.3-5mm.
Aluminium foil layer thickness of the prior art is generally 40-100 μ m, and the utility model employing thickness is the aluminium foil of 0.3-5mm, then need not wrap up one deck aluminium flake in electric core periphery again, has therefore saved battery space, has improved energy density.
As a kind of improvement of the utility model poly-lithium battery, described electric core periphery is enclosed with label paper.
As a kind of improvement of the utility model poly-lithium battery, the thickness of said aluminium foil layer is 0.5-2mm.
As a kind of improvement of the utility model poly-lithium battery, the thickness of said aluminium foil layer is 0.7mm, and the aluminium foil layer of this thickness can be taken into account the balance between electric core of protection and the energy density preferably.
As a kind of improvement of the utility model poly-lithium battery, said protective layer is a nylon layer, and the thickness of said nylon layer is 15-50 μ m.
As a kind of improvement of the utility model poly-lithium battery, said hot sealing layer is polypropylene (PP) layer, and the thickness of said polypropylene (PP) layer is 25-80 μ m.
As a kind of improvement of the utility model poly-lithium battery, be filled with filling glue between said bonnet and the electric core.So can firm better electric core and bonnet between connection.
As a kind of improvement of the utility model poly-lithium battery, be filled with filling glue between circuit board and the electric core.So can firm better electric core and baffle between connection.
With respect to prior art; The utility model is located at the outer field aluminium flake of electric core in the replacement prior art, thereby reduces the thickness and the length space of battery through the thickness of aluminium foil layer in the packaging bag that increases electric core; Reduce to encapsulate used space effectively, promote the energy density of polymer Li-ion battery.Simultaneously, simplified processing process reduces processing cost.
Description of drawings
Fig. 1 is the decomposing schematic representation of the utility model;
Fig. 2 is the structural representation of the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described:
Please see figures.1.and.2; A kind of poly-lithium battery of the utility model; Comprise electric core 3, be used to hold the packaging bag 6 of said electric core 3, said electric core 3 front ends are embedded with circuit board 2 and protecgulum 1 successively, and electric core 3 rear ends are provided with bonnet 4; Circuit board 2 is electrically connected with electric core 3 through the lug 5 on the said electric core 3; The lug 3 of drawing from circuit board 2 is embedded on protecgulum 1, and said packaging bag 6 comprises protective layer, hot sealing layer and the aluminium foil layer between said protective layer and hot sealing layer, and the thickness of said aluminium foil layer is 0.3-5mm.
Wherein, described electric core 3 peripheries are enclosed with label paper.
The thickness of said aluminium foil layer is 0.5-2mm, is preferably 0.7mm.
Said protective layer is a nylon layer, and the thickness of said nylon layer is 15-50 μ m.
Said hot sealing layer is polypropylene (PP) layer, and the thickness of said polypropylene (PP) layer is 25-80 μ m.
Be filled with filling glue between said bonnet 4 and the electric core 3.
Be filled with filling glue between circuit board 2 and the electric core 3.
During assembling, the lug 5 with electric core 3 is welded on the pad of circuit board 2 earlier, then circuit board 2 is embedded into 1 li of protecgulum, between the gap of circuit board 2 and electric core 3, utilizes and fills the glue filling, between bonnet 4 and electric core 3, also fills with filling glue.Need to prove that in order to reduce cost and to simplify packaging technology, the filling glue of above-mentioned several position adopts manual mode of playing glue as far as possible, avoids adopting low temperature injection moulding mode.
Do relatively individual in the face of the space availability ratio and the energy density of prior art and poly-lithium battery of the present invention down:
Getting the model for preparing is the electric core of 454261 (the thick 5.0mm of being of electric core, wide is 42.0mm, grows to be 61.5mm); Lug 5 with electric core is welded on the pad of circuit board 2 earlier, then circuit board 2 is embedded into 1 li of protecgulum, between circuit board 2 and electric core 3, fills glue; Between bonnet 4 and electric core 3, fill glue, wherein, the thickness of aluminium foil layer is 0.7mm in the packaging bag 6; The thickness of nylon layer is 25 μ m, and the thickness of polypropylene layer is 40 μ m.
In addition, in order to utilize the useful space as far as possible, aspect battery structure design and assembling, the parts height utilizes electric core 3 closedtop spaces to deposit as far as possible on circuit board 2 and the circuit board 2, reduces the size of cell package at length direction.
As a comparison, (electric core is thick to be 4.6mm, and wide is 41.7mm to get the model for preparing and be 454261; Long be 61.5mm) electric core, its packaged type adopts is the traditional Jiao Gai up and down packaged type with aluminium flake (or steel disc) and label paper, the thickness of aluminium flake is 1.5mm; In its packaging bag; The thickness of aluminium foil layer is 40 μ m, and the thickness of nylon layer is 25 μ m, and the thickness of polypropylene layer is 40 μ m.
Comparatively speaking, the polymer Li-ion battery of the utility model is saved about 0.3mm on width, save 0.4mm on the thickness, and under the same battery size space, energy density promotes about 4%.
According to the announcement and the instruction of above-mentioned specification, the utility model those skilled in the art can also carry out suitable change and modification to above-mentioned execution mode.Therefore, the embodiment that discloses and describe above the utility model is not limited to is in the protection range of the claim that also should fall into the utility model to some modifications and the change of the utility model.In addition, although used some specific terms in this specification, these terms are explanation for ease just, the utility model is not constituted any restriction.
Claims (8)
1. poly-lithium battery; Comprise electric core, be used to hold the packaging bag of said electric core, said electric core front end is embedded with circuit board and protecgulum successively, and electric core rear end is provided with bonnet; Circuit board is electrically connected with electric core through the lug on the said electric core; The lug of drawing from circuit board is embedded on protecgulum, and said packaging bag comprises protective layer, hot sealing layer and the aluminium foil layer between said protective layer and hot sealing layer, it is characterized in that: the thickness of said aluminium foil layer is 0.3-5mm.
2. poly-lithium battery according to claim 1 is characterized in that: described electric core periphery is enclosed with label paper.
3. poly-lithium battery according to claim 1 is characterized in that: the thickness of said aluminium foil layer is 0.5-2mm.
4. poly-lithium battery according to claim 3 is characterized in that: the thickness of said aluminium foil layer is 0.7mm.
5. poly-lithium battery according to claim 1 is characterized in that: said protective layer is a nylon layer, and the thickness of said nylon layer is 15-50 μ m.
6. poly-lithium battery according to claim 1 is characterized in that: said hot sealing layer is polypropylene (PP) layer, and the thickness of said polypropylene (PP) layer is 25-80 μ m.
7. poly-lithium battery according to claim 1 is characterized in that: be filled with filling glue between said bonnet and the electric core.
8. poly-lithium battery according to claim 1 is characterized in that: be filled with filling glue between circuit board and the electric core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200821175U CN202585548U (en) | 2012-03-07 | 2012-03-07 | Polymer lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200821175U CN202585548U (en) | 2012-03-07 | 2012-03-07 | Polymer lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202585548U true CN202585548U (en) | 2012-12-05 |
Family
ID=47254926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200821175U Expired - Lifetime CN202585548U (en) | 2012-03-07 | 2012-03-07 | Polymer lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202585548U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115472971A (en) * | 2022-10-27 | 2022-12-13 | 维沃移动通信有限公司 | Battery and electronic device |
-
2012
- 2012-03-07 CN CN2012200821175U patent/CN202585548U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115472971A (en) * | 2022-10-27 | 2022-12-13 | 维沃移动通信有限公司 | Battery and electronic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121205 |
|
| CX01 | Expiry of patent term |