CN212874703U - Soft packet of lithium ion battery group of integrated into one piece's interior cluster - Google Patents
Soft packet of lithium ion battery group of integrated into one piece's interior cluster Download PDFInfo
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- CN212874703U CN212874703U CN202021820656.5U CN202021820656U CN212874703U CN 212874703 U CN212874703 U CN 212874703U CN 202021820656 U CN202021820656 U CN 202021820656U CN 212874703 U CN212874703 U CN 212874703U
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- aluminum
- plastic film
- lithium ion
- electric core
- ion battery
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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 discloses a soft packet of lithium ion battery group of fashioned interior cluster of integration, including plastic-aluminum membrane casing, anodal ear, negative pole ear and a plurality of electric core units of setting in the plastic-aluminum membrane casing, a plurality of electric core units are established ties together through the conducting strip, are provided with plastic-aluminum membrane heat-seal strip between the adjacent electric core unit, and the cladding has utmost point ear glue film on the conducting strip between the adjacent electric core unit. According to the lithium ion battery pack, on one hand, the plurality of battery cell units are integrated together and integrally formed through the aluminum plastic film shell, so that the production efficiency is improved, and the energy density of a battery system is improved; on the other hand, the aluminum-plastic film heat-sealing strips are arranged between the adjacent cell units, and the cell units are separated from each other by utilizing the heat-sealing bonding process of the aluminum-plastic film heat-sealing strips, so that the electrolyte is prevented from being decomposed under high pressure. In addition, the conductive sheet is coated with the tab glue layer, so that the conductive sheet can be better bonded with an aluminum plastic film heat sealing strip or an aluminum plastic film shell during heat sealing.
Description
Technical Field
The utility model relates to a lithium battery technology field, concretely relates to soft packet of lithium ion battery group of fashioned interior cluster of integration.
Background
Lithium ion batteries are electrochemical energy storage devices which are commonly used at present, and in recent years, the lithium ion batteries are gradually applied to new energy automobiles, energy storage devices and other devices which need high voltage. In the prior art, because the lithium ion battery is limited by a material system, the voltage of a single cell unit is less than 4V, and in order to obtain higher voltage, a plurality of cell units are required to be connected in series to form a battery pack.
At present, in the lithium cell group production process, at first need constitute electric core module by electric core unit, constitute the battery package by electric core module again, whole production process is loaded down with trivial details, has not only increased manufacturing cost, has influenced production efficiency moreover, constitutes electric core module earlier, constitutes the battery package again, based on electric core module wall thickness, assemble factors such as clearance, attached subassembly, can influence battery system's energy density undoubtedly.
In order to overcome the above drawbacks, in the prior art, a flexible package lithium battery technology based on an aluminum-plastic film is provided, and for example, chinese patent publication No. CN210052811U discloses an aluminum-plastic film integrated lithium battery, which integrates a plurality of lithium batteries (which can be understood as a cell unit) together through an aluminum-plastic film casing, and the lithium batteries are electrically connected through conductive bars. This patent adopts the fashioned technique of integration, has improved production efficiency greatly, still has following drawback: the battery cell units are poor in separation effect, and the electrolyte is prone to decomposition under high pressure.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a soft packet of lithium ion battery group of interior cluster of integrated into one piece to improve battery system's production efficiency and energy density, simultaneously, improve the effect that separates between the electric core unit, thereby avoid electrolyte to decompose under high pressure.
The utility model discloses an above-mentioned problem is solved to following technical means:
the utility model provides a soft packet of lithium ion battery group of fashioned interior cluster of integration, includes plastic-aluminum membrane casing, anodal ear, negative pole ear and sets up a plurality of electric core units in the plastic-aluminum membrane casing, a plurality of electric core units are established ties through the conducting strip and are in the same place, are provided with plastic-aluminum membrane heat-seal strip between the adjacent electric core unit, and the cladding has utmost point ear glue film on the conducting strip between the adjacent electric core unit.
Further, the aluminum-plastic film heat-sealing strip and the aluminum-plastic film shell are integrally formed.
Further, the conducting strip is a nickel sheet or a nickel-plated copper sheet.
Furthermore, positive tab and negative tab are all glued together with the plastic-aluminum membrane casing through utmost point ear glue film.
Further, a pair of aluminum-plastic film heat-sealing strips is arranged on the upper side and the lower side between the adjacent cell units in a right-faced mode.
Furthermore, the tab glue layer on the conducting strip is arranged in the middle area of the conducting strip, and the position of the tab glue layer corresponds to the position of the aluminum plastic film heat sealing strip.
The utility model has the advantages that:
the utility model discloses a soft packet of lithium ion battery group of fashioned interior cluster of integration, including plastic-aluminum membrane casing, anodal ear, negative pole ear and a plurality of electric core units of setting in the plastic-aluminum membrane casing, a plurality of electric core units are established ties through the conducting strip and are in the same place, are provided with plastic-aluminum membrane heat-seal strip between the adjacent electric core unit, and the cladding has utmost point ear glue film on the conducting strip between the adjacent electric core unit. According to the lithium ion battery pack, on one hand, the plurality of battery cell units are integrated together and integrally formed through the aluminum plastic film shell, so that the production efficiency is improved, and the energy density of a battery system is improved; on the other hand, the aluminum-plastic film heat-sealing strips are arranged between the adjacent cell units, and the cell units are separated from each other by utilizing the heat-sealing bonding process of the aluminum-plastic film heat-sealing strips, so that the electrolyte is prevented from being decomposed under high pressure. In addition, the conductive sheet is coated with the tab glue layer, so that the conductive sheet can be better bonded with an aluminum plastic film heat sealing strip or an aluminum plastic film shell during heat sealing. In addition, the application has the advantages that:
1. the battery module, the module and the system are integrally formed, so that the assembly workload of the battery module, the module and the system is reduced, and the assembly efficiency is improved;
2. the cell units are integrated into a group, so that the components of the battery pack are reduced, and the energy density of the system is improved;
3. the soft-package lithium ion battery pack meeting the high voltage can be manufactured by adopting a conventional process of a soft-package battery cell;
4. meets the requirements of the current CTP technology;
drawings
The invention is further described with reference to the following figures and examples.
FIG. 1 is a schematic structural view of example 1.
FIG. 2 is a schematic structural view of example 2.
Reference numerals:
1, tab glue layer, 2, conducting strip, 3, aluminum plastic film heat sealing strip, 4, positive tab, 5: negative electrode tab, 6: and a battery cell unit.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1: this embodiment provides a soft packet of lithium ion battery group of cluster in integration shaping, including plastic-aluminum membrane casing, anodal ear 4, negative pole ear 5 and a plurality of electric core unit 6 of encapsulation in the plastic-aluminum membrane casing, anodal ear 4 and negative pole ear 5 all glue together through utmost point ear glue film 1 and plastic-aluminum membrane casing, electric core unit 6 accessible is convoluteed or lamination technology makes, and the capacity and the quantity of electric core unit can be customized according to actual demand. A plurality of electric core units 6 are connected together in series through conducting strip 2, conducting strip 2 is nickel piece or nickel plating copper sheet, and conducting strip 2 and electric core unit 6 are positive negative pole between through ultrasonic welding. A pair of aluminum-plastic film heat-sealing strips 3 are arranged on the upper side and the lower side between the adjacent electric core units 6, and the aluminum-plastic film heat-sealing strips 3 and the aluminum-plastic film shell are integrally formed. The middle area of the conducting strip 2 between the adjacent cell units 6 is coated with a tab glue layer 1, and the position of the tab glue layer corresponds to the position of the aluminum plastic film heat sealing strip.
The packaging mode and the preparation process of the aluminum plastic film shell are the same as those of the conventional soft package lithium ion battery monomer. Such as vacuum baking, liquid injection, standing, pressure formation of a clamp, high-temperature aging and secondary sealing, so as to finish the preparation of the soft-package lithium ion battery pack.
On one hand, the lithium ion battery pack of the embodiment integrates the plurality of cell units into a whole through the aluminum plastic film shell, so that the production efficiency is improved, and the energy density of a battery system is improved; on the other hand, through set up aluminium-plastic film heat-sealing strip between adjacent electric core unit, it is fixed to heat the aluminium-plastic film heat-sealing strip relative from top to bottom, can separate each other between the electric core unit, makes the electrolyte of every unit electricity core not contact, consequently, electrolyte only bears the voltage of single unit electricity core, has avoided electrolyte to decompose under the high pressure of establishing ties. In addition, the conductive sheet is coated with the tab glue layer, so that the conductive sheet can be better bonded with an aluminum plastic film heat sealing strip or an aluminum plastic film shell during heat sealing.
Example 2
As shown in fig. 2, the present embodiment is different from embodiment 1 in that: the arrangement form of the battery cell unit is a full-lug battery cell with lugs at two ends, and other structures are the same as those in embodiment 1.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (6)
1. The utility model provides a soft packet of lithium ion battery group of fashioned interior cluster of integration, includes plastic-aluminum membrane casing, anodal ear, negative pole ear and sets up a plurality of electric core units in the plastic-aluminum membrane casing, a plurality of electric core units establish ties through the conducting strip and are in the same place its characterized in that: an aluminum plastic film heat sealing strip is arranged between the adjacent electric core units, and a tab glue layer is coated on the conductive sheet between the adjacent electric core units.
2. The integrally formed soft-pack lithium ion battery pack with an inner string according to claim 1, wherein: the aluminum-plastic film heat-sealing strip and the aluminum-plastic film shell are integrally formed.
3. The integrally-formed soft-pack lithium ion battery pack with an inner string according to claim 2, wherein: the conducting strip is a nickel sheet or a nickel-plated copper sheet.
4. The integrally formed soft-pack lithium ion battery pack with an inner string according to claim 3, wherein: the positive electrode lug and the negative electrode lug are both glued with the aluminum plastic film shell through the lug glue layer.
5. The integrally formed soft-pack lithium ion battery pack with an inner string according to claim 4, wherein: a pair of aluminum plastic film heat sealing strips is arranged on the upper side and the lower side between the adjacent electric core units.
6. The integrally formed soft-pack lithium ion battery pack with an inner string according to claim 5, wherein: the tab glue layer on the conducting strip is arranged in the middle area of the conducting strip, and the position of the tab glue layer corresponds to the position of the aluminum plastic film heat sealing strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021820656.5U CN212874703U (en) | 2020-08-27 | 2020-08-27 | Soft packet of lithium ion battery group of integrated into one piece's interior cluster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021820656.5U CN212874703U (en) | 2020-08-27 | 2020-08-27 | Soft packet of lithium ion battery group of integrated into one piece's interior cluster |
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| Publication Number | Publication Date |
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| CN212874703U true CN212874703U (en) | 2021-04-02 |
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| CN202021820656.5U Active CN212874703U (en) | 2020-08-27 | 2020-08-27 | Soft packet of lithium ion battery group of integrated into one piece's interior cluster |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023216512A1 (en) * | 2022-05-10 | 2023-11-16 | 蔚来电池科技(安徽)有限公司 | Battery |
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- 2020-08-27 CN CN202021820656.5U patent/CN212874703U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023216512A1 (en) * | 2022-05-10 | 2023-11-16 | 蔚来电池科技(安徽)有限公司 | Battery |
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