CN212113874U - Special-shaped laminated battery - Google Patents
Special-shaped laminated battery Download PDFInfo
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- CN212113874U CN212113874U CN202021253854.8U CN202021253854U CN212113874U CN 212113874 U CN212113874 U CN 212113874U CN 202021253854 U CN202021253854 U CN 202021253854U CN 212113874 U CN212113874 U CN 212113874U
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- positive
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- current collector
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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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- 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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Abstract
A special-shaped laminated battery comprises a battery core, a current collector and an aluminum plastic film, wherein the battery core consists of a positive plate, a negative plate and a diaphragm, the diaphragm is continuously folded in a Z shape, the positive plates and the negative plates are arranged between two adjacent surfaces of the diaphragm in a staggered manner, the middle part of one end face of the positive plate is provided with a positive lug, all the positive lugs face to the same side, the middle part of one end face of the negative plate opposite to the positive lugs is provided with a negative lug, all the negative lugs face to the same side, compared with the prior art, the utility model changes the traditional tab leading-out position, adopts the opposite arrangement of the positive and negative electrode tabs, avoids the reserve safety distance between the tabs when leading out in the same direction, under the condition of the same cell width, the widths of the positive electrode lug, the negative electrode lug and the current collector are increased, heat generated by battery discharge can be dissipated more quickly, heat in the battery cell is reduced, and the safety of the battery is improved.
Description
Technical Field
The utility model relates to a lithium cell technical field, in particular to heterotypic lamination battery.
Background
The lithium battery is popularized to various fields at present, along with the expansion of application market, the requirement on the lithium battery is higher and higher, particularly, the special battery is limited by the size of a lug and the distance between the lugs, so that the temperature of the battery is rapidly increased when heavy current is discharged, the internal structure of a battery core can be damaged, combustion can be seriously caused, the conventional bipolar lug same-side lithium battery packaging adopts two side sealing and one top sealing processes, the requirement on packaging equipment is high, and the abnormal probability is high.
SUMMERY OF THE UTILITY MODEL
The utility model provides a be fit for heavy current discharge's heterotypic lamination lithium cell to above problem.
The utility model provides a technical scheme that above technical problem adopted is:
a special-shaped laminated battery comprises an electric core, a current collector and an aluminum-plastic film, wherein the electric core consists of a positive plate, a negative plate and a diaphragm, the diaphragm is continuously folded in a Z shape, the positive plate and the negative plate are arranged between two adjacent surfaces of the diaphragm in a staggered manner, a positive lug is arranged in the middle of one end surface of the positive plate, all positive lugs are arranged towards the same side, a negative lug is arranged in the middle of one end surface of the negative plate opposite to the positive lugs, and all negative lugs are arranged towards the same side; a plurality of protruding needles are arranged on the bottom surface of one end of the current collector;
the topmost and bottommost parts of all the positive lugs are respectively provided with a current collector, and the overlapping parts of the two current collectors and all the positive lugs are subjected to stamping welding;
the topmost and bottommost parts of all the negative electrode lugs are respectively provided with a current collector, and the overlapping parts of the two current collectors and all the negative electrode lugs are subjected to stamping welding;
the aluminum-plastic film is a closed rectangular film, the aluminum-plastic film is wrapped on the battery core in a vacuum mode, two opening ends of the aluminum-plastic film are connected through hot stamping, and the overlapped part of the aluminum-plastic film and the current collector is connected in a sealing mode through tab glue.
As a further improvement, the protruding needle penetrates through a plurality of positive lugs.
After the arrangement, the contact area of the current collector and the positive lug is increased, and the heat conduction speed is increased.
As a further improvement, the protruding needles penetrate through the negative electrode tabs.
After the arrangement, the contact area of the current collector and the negative electrode tab is increased, and the heat conduction speed is increased.
As a further improvement, the battery core is filled with electrolyte, positive electrode materials are arranged on the upper surface and the lower surface of the positive electrode plate, and negative electrode materials are arranged on the upper surface and the lower surface of the negative electrode plate.
Thus arranged, lithium ion intercalation and deintercalation reactions are facilitated.
As a further improvement, at least two positioning holes are formed in the other end of the current collector.
After the positioning, the tool is convenient to position.
As a further improvement, the middle parts of the two current collectors which are overlapped up and down are connected through tab glue, and one surfaces of the two current collectors provided with the protruding needles are arranged oppositely.
The blind spots which cannot be connected are sealed by hot stamping the aluminum plastic film after the arrangement.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model changes the traditional tab leading-out position, adopts the opposite arrangement of the positive and negative electrode tabs, reserves the safety distance between the tabs when avoiding leading out in the same direction, and under the condition of the same cell width, the widths of the positive and negative electrode tabs and the current collector are increased, the heat generated by the battery discharge can be more quickly dissipated, the heat in the cell is reduced, and the battery safety is improved;
2. the current collector of the utility model is provided with the protruding needle, when the current collector is welded with the lug, the lug is punctured, so that the contact area between the current collector and each lug is increased, namely, the heat transfer speed is increased, and the safety of the battery is improved;
3. the utility model discloses change into horizontal membrane towards membrane technology, the unusual probability of mould reduces, and the encapsulation quality improves.
Drawings
Fig. 1 is a longitudinal sectional view of the present invention.
Fig. 2 is the structure diagram of the electric core of the utility model.
Fig. 3 is a transverse cross-sectional view of the aluminum plastic film before film punching.
Fig. 4 is a transverse sectional view of the aluminum plastic film of the present invention after punching.
Fig. 5 is a schematic structural diagram of the current collector of the present invention.
Fig. 6 is a schematic view of the packaging structure of the aluminum-plastic film of the present invention.
In the figure, 1, a battery cell, 11, a positive plate, 111, a positive tab, 12, a negative plate, 121, a negative tab, 13, a diaphragm, 2, a current collector, 21, a protruding needle, 22, a positioning hole, 3, tab glue, 4, an aluminum plastic film, 41, a top sealing area and 42, edge curling are performed.
Detailed Description
The invention is further described with reference to the accompanying drawings and the detailed description.
As shown in fig. 1, 2 and 5, a special-shaped laminated battery comprises an electric core 1, a current collector 2 and an aluminum-plastic film 4, wherein the electric core 1 is composed of a positive plate 11, a negative plate 12 and a diaphragm 13, the diaphragm 13 is continuously folded in a Z shape, the positive plate 11 and the negative plate 12 are arranged between two adjacent surfaces of the diaphragm 13 in a staggered manner, a positive tab 111 is arranged in the middle of one end surface of the positive plate 11, all the positive tabs 111 face to the same side, a negative tab 121 is arranged in the middle of one end surface of the negative plate 12 opposite to the positive tab 111, and all the negative tabs 121 face to the same side; a plurality of protruding needles 21 are arranged on the bottom surface of one end of the current collector 2; the topmost and bottommost parts of the positive lugs 111 are respectively provided with a current collector 2, and the overlapping parts of the two current collectors 2 and all the positive lugs 111 are punched and welded; the topmost and bottommost parts of all the negative electrode tabs 121 are respectively provided with a current collector 2, and the overlapping parts of the two current collectors 2 and all the negative electrode tabs 121 are subjected to stamping welding; the aluminum-plastic film 4 is a closed rectangular film, the aluminum-plastic film is wrapped on the battery core 1 in a vacuum mode, two opening ends of the aluminum-plastic film 4 are connected in a hot stamping mode, and the overlapped part of the aluminum-plastic film 4 and the current collector 2 is connected in a sealing mode through the tab glue 3.
The protruding needle 21 penetrates through the plurality of positive lugs 111; the protruding needles 21 penetrate through the negative electrode tabs 121; electrolyte is filled in the battery core 1, positive electrode substances are arranged on the upper surface and the lower surface of the positive plate 11, and negative electrode substances are arranged on the upper surface and the lower surface of the negative plate 12; at least two positioning holes 22 are formed in the other end of the current collector 2; the middle parts of the current collectors 2 which are overlapped up and down are connected through the tab glue 3, and one surfaces of the two current collectors 2 provided with the protruding needles 21 are arranged oppositely.
The positive plate is an aluminum foil, and the negative plate is a copper foil;
the positive electrode material consists of a positive electrode active material, a positive electrode conductive agent and a positive electrode binder; the positive active substance is nickel cobalt lithium manganate, and the positive conductive agent is composed of carbon black and VGCF;
the negative electrode material consists of a negative electrode active material, a negative electrode conductive agent and a negative electrode binder; the negative electrode active substance is graphite, and the negative electrode conductive agent is composed of carbon black and VGCF;
the electrolyte is a solution of electrolyte lithium salt dissolved in a solvent, has ionic conductivity, and common solvents include DC, EC, DMC, DEC, EMC and the like.
As shown in fig. 3, the aluminum-plastic film 4 is sleeved outside the electric core 1;
as shown in fig. 4, the aluminum plastic film 4 is tightly wrapped with the battery cell 1 through a film hot stamping process, and a curled edge 42 is formed at both sides;
as shown in fig. 6, a top sealing region 41 is sealed by a sealing machine, electrolyte is injected into the battery cell 1, and finally, another top sealing region 41 is vacuumized and sealed.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.
The embodiments of the present invention have been described in detail, and the principles and embodiments of the present invention have been explained herein using specific embodiments, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (6)
1. A heterotype laminated battery comprises an electric core (1), a current collector (2) and an aluminum-plastic film (4), wherein the electric core (1) consists of a positive plate (11), a negative plate (12) and a diaphragm (13), the diaphragm (13) is continuously folded in a Z shape, the positive plate (11) and the negative plate (12) are arranged between two adjacent surfaces of the diaphragm (13) in a staggered manner, the heterotype laminated battery is characterized in that a positive lug (111) is arranged in the middle of one end surface of the positive plate (11), all positive lugs (111) are arranged towards the same side, a negative lug (121) is arranged in the middle of one end surface of the negative plate (12) opposite to the positive lug (111), and all negative lugs (121) are arranged towards the same side; a plurality of protruding needles (21) are arranged on the bottom surface of one end of the current collector (2);
the topmost and bottommost of all the positive lugs (111) are respectively provided with a current collector (2), and the overlapping parts of the two current collectors (2) and all the positive lugs (111) are subjected to stamping welding;
the topmost and bottommost parts of all the negative electrode lugs (121) are respectively provided with a current collector (2), and the overlapping parts of the two current collectors (2) and all the negative electrode lugs (121) are subjected to stamping welding;
the aluminum-plastic film (4) is a closed rectangular film, the aluminum-plastic film is wrapped on the battery core (1) in a vacuum mode, two opening ends of the aluminum-plastic film (4) are connected through hot stamping, and the aluminum-plastic film (4) and the current collector (2) are overlapped and are connected in a sealing mode through the tab glue (3).
2. A profiled laminated battery as claimed in claim 1, wherein: the protruding needle (21) penetrates through the positive lugs (111).
3. A profiled laminated battery as claimed in claim 1, wherein: the protruding needle (21) penetrates through the negative electrode ears (121).
4. A profiled laminated battery as claimed in claim 1, wherein: electrolyte is filled in the battery core (1), positive electrode substances are arranged on the upper surface and the lower surface of the positive plate (11), and negative electrode substances are arranged on the upper surface and the lower surface of the negative plate (12).
5. A profiled laminated battery as claimed in claim 1, wherein: and the other end of the current collector (2) is provided with at least two positioning holes (22).
6. A profiled laminated battery as claimed in claim 1, wherein: the middle parts of the current collectors (2) which are overlapped up and down are connected through the tab glue (3), and one surfaces of the two current collectors (2) which are provided with the protruding needles (21) are arranged oppositely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021253854.8U CN212113874U (en) | 2020-07-01 | 2020-07-01 | Special-shaped laminated battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021253854.8U CN212113874U (en) | 2020-07-01 | 2020-07-01 | Special-shaped laminated battery |
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| CN212113874U true CN212113874U (en) | 2020-12-08 |
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| CN202021253854.8U Active CN212113874U (en) | 2020-07-01 | 2020-07-01 | Special-shaped laminated battery |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113363632A (en) * | 2021-05-13 | 2021-09-07 | 昆山聚创新能源科技有限公司 | Soft package battery cell, manufacturing method thereof and battery |
| CN115064781A (en) * | 2022-05-20 | 2022-09-16 | 楚能新能源股份有限公司 | Composite core package for battery core, battery core and battery module |
| CN116598561A (en) * | 2023-05-09 | 2023-08-15 | 深圳欣视界科技有限公司 | Packaging method of laminated battery cell and laminated battery |
-
2020
- 2020-07-01 CN CN202021253854.8U patent/CN212113874U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113363632A (en) * | 2021-05-13 | 2021-09-07 | 昆山聚创新能源科技有限公司 | Soft package battery cell, manufacturing method thereof and battery |
| CN115064781A (en) * | 2022-05-20 | 2022-09-16 | 楚能新能源股份有限公司 | Composite core package for battery core, battery core and battery module |
| CN115064781B (en) * | 2022-05-20 | 2023-03-24 | 楚能新能源股份有限公司 | Composite core package for battery core, battery core and battery module |
| CN116598561A (en) * | 2023-05-09 | 2023-08-15 | 深圳欣视界科技有限公司 | Packaging method of laminated battery cell and laminated battery |
| CN116598561B (en) * | 2023-05-09 | 2024-04-16 | 深圳欣界能源科技有限公司 | Packaging method of laminated battery cell and laminated battery |
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