CN216648430U - Novel square cell shell cladding structure - Google Patents
Novel square cell shell cladding structure Download PDFInfo
- Publication number
- CN216648430U CN216648430U CN202123322020.5U CN202123322020U CN216648430U CN 216648430 U CN216648430 U CN 216648430U CN 202123322020 U CN202123322020 U CN 202123322020U CN 216648430 U CN216648430 U CN 216648430U
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- Prior art keywords
- pet
- casing
- graphite
- layer
- electric core
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- 238000005253 cladding Methods 0.000 title claims abstract description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 41
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 41
- 239000010439 graphite Substances 0.000 claims abstract description 41
- 239000010410 layer Substances 0.000 claims abstract description 39
- 239000000758 substrate Substances 0.000 claims abstract description 34
- 239000012790 adhesive layer Substances 0.000 claims abstract description 23
- 239000002131 composite material Substances 0.000 claims abstract description 12
- 239000011258 core-shell material Substances 0.000 claims abstract description 3
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 3
- 239000005751 Copper oxide Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052810 boron oxide Inorganic materials 0.000 claims description 3
- 229910000431 copper oxide Inorganic materials 0.000 claims description 3
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 10
- 239000003292 glue Substances 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 7
- 230000017525 heat dissipation Effects 0.000 abstract description 6
- 239000007770 graphite material Substances 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 abstract description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 58
- 238000009413 insulation Methods 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229920002799 BoPET Polymers 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009422 external insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding Methods 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
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- Secondary Cells (AREA)
Abstract
The utility model discloses a novel square battery cell shell cladding structure, which comprises: the casing, casing include PET substrate, graphite layer and PET double-sided adhesive layer, and PET double-sided adhesive layer's opposite side bonds and has electric core Al casing, the outside of electric core Al casing is equipped with the heat exchange surface, and the outside of PET substrate is equipped with insulating face. According to the utility model, the electric core is coated by using the high-thermal-conductivity novel material graphite instead of the traditional PET, so that the heat dissipation effect of the electric core is achieved, meanwhile, the thin insulating PET substrate and the PET glue are compounded, so that the insulating effect of the electric core and an external electric connector and the bonding effect of the composite graphite and the electric core shell are achieved, when the electric connector inside the electric core generates heat, the high-thermal-conductivity graphite material can effectively dissipate the heat, and the cooling effect of the electric core is achieved.
Description
Technical Field
The utility model relates to the technical field of battery cell production, in particular to a novel square battery cell shell cladding structure.
Background
The insulating coating film of the cell shell of the power battery system at the present stage is generally a PET-0.11mm thick blue film, and under severe working conditions such as high-rate discharge, quick charge, quick acceleration, quick deceleration and the like, the cell/internal and external mechanical connecting pieces such as an overcurrent aluminum bar and the like rapidly generate heat, because the heat conductivity coefficient of the blue film of the cell is lower and is about 0.3W/m/K, the heat accumulated by the cell cannot be effectively and timely taken away, if the heat cannot be effectively dissipated, the heat can be directly transferred to the winding core body through the cell pole, and the electrical performance and the safety and reliability of the cell are seriously influenced.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving one of the technical problems of the prior art or the related art.
Therefore, the technical scheme adopted by the utility model is as follows: a novel square cell shell cladding structure, includes: the casing, the casing includes PET substrate, graphite layer and PET double-sided adhesive layer, PET double-sided adhesive layer's opposite side bonds and has electric core Al casing, the outside of electric core Al casing is equipped with the heat exchange surface, the outside of PET substrate is equipped with insulating face.
The present invention in a preferred example may be further configured to: the thickness of PET substrate is 50 μm, the casing still includes the PET glue film, PET glue film thickness is 20 μm.
Through adopting above-mentioned technical scheme, utilize the PET substrate and the PET glue film of lower thickness to avoid influencing the telecommunications heat dissipation.
The present invention in a preferred example may be further configured to: and PET composite bonding surfaces are arranged on two sides of the graphite layer, and the thickness of the PET composite bonding surfaces is less than 2 mu m.
Through adopting above-mentioned technical scheme, compound thinner insulating PET substrate and PET are glued, play electric core and external electric connection piece's insulating effect and compound graphite with the bonding effect of electric core shell.
The present invention in a preferred example may be further configured to: the graphite layer adopts a heat conduction graphite sheet structure, and the thickness of the graphite layer is 25 mu m.
Through adopting above-mentioned technical scheme, utilize high heat conduction novel material graphite to replace traditional PET to carry out the cladding to electric core, play electric core radiating effect.
The utility model in a preferred example may be further configured to: the PET double-sided adhesive layer is of a double-sided adhesive layer structure, and two sides of the PET double-sided adhesive layer are respectively bonded with the graphite layer and the surface of the battery cell Al shell.
By adopting the technical scheme, the PET cement structure is adopted for bonding all layers, and the bonding effect is good and high temperature resistance is achieved.
The present invention in a preferred example may be further configured to: the surface of the heat exchange surface is of a smooth surface structure, and the surface fitting degree during heat exchange is improved by utilizing the smooth surface.
The utility model in a preferred example may be further configured to: the PET substrate outside is equipped with the pattern layer, the pattern layer adopts stamp or sculpture mode to make, carries out the customization pattern.
The utility model in a preferred example may be further configured to: the surface of the PET substrate is provided with hollowed holes, corners of the hollowed holes are smooth and transitional, and the surface heat dissipation performance of the PET substrate is further improved by adopting a hollowed pattern structure.
The present invention in a preferred example may be further configured to: the surface of the graphite layer is provided with an insulating oxide layer, the insulating oxide layer is one of aluminum oxide, copper oxide or silicon oxide and boron oxide, and the graphite surface insulation is realized by utilizing the oxide layer.
The present invention in a preferred example may be further configured to: the insulating surface is of a graphite insulating surface structure, the insulating surface wraps the outer side of the PET substrate, and the thickness of the insulating surface is smaller than 5 microns.
Specifically, adopt insulating surface structure to carry out PET substrate surface insulation, avoid the static breakdown on PET substrate surface to improve barrier propterty.
The beneficial effects obtained by the utility model are as follows:
the utility model can utilize the high-heat-conductivity novel material graphite to replace the traditional PET to coat the battery cell, thereby playing a role in heat dissipation of the battery cell, being more beneficial to the overall temperature rise reduction of the battery cell than the traditional PET film under the working conditions of the same overcurrent and the like, simultaneously compounding the thinner insulating PET substrate and the PET glue, playing a role in insulating the battery cell and an external electric connector and bonding the composite graphite with the shell of the battery cell, when the electric connector inside the battery cell generates heat, the high-heat-conductivity graphite material can effectively dissipate the heat, playing a role in cooling the battery cell, simultaneously, effectively and actively taking away the heat rapidly generated by the battery cell under the severe working conditions of high-rate discharge, quick charge, quick acceleration, quick deceleration and the like, and effectively improving the performance and the safety of the electric performance of the battery cell.
Drawings
Fig. 1 is a schematic view of the overall structure of the novel square cell case cladding structure of the present invention;
FIG. 2 is a schematic view of the layered structure of the housing of the present invention;
FIG. 3 is a schematic diagram of the crystal structure of graphite according to the present invention.
Reference numerals:
100. a housing;
101. a PET substrate; 102. a PET glue layer; 103. a graphite layer; 104. a PET double-sided adhesive layer; 105. a cell Al shell; 106. A heat exchange surface; 107. an insulating surface; 108. and (5) PET composite bonding surface.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be noted that the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.
It is to be understood that this description is made only by way of example and not as a limitation on the scope of the utility model.
A novel square cell casing cladding structure provided by some embodiments of the present invention is described below with reference to the accompanying drawings.
Example 1:
as shown in fig. 1 to 3, the present invention provides a novel square battery cell case cladding structure, including: casing 100, casing 100 include PET substrate 101, graphite layer 103 and PET double-sided tape 104, and the opposite side of PET double-sided tape 104 bonds and has electric core Al casing 105, and electric core Al casing 105's the outside is equipped with heat exchange surface 106, and PET substrate 101's the outside is equipped with insulating surface 107.
In this embodiment, the thickness of the PET substrate 101 is 50 μm, and the case 100 further includes a PET adhesive layer 102, and the thickness of the PET adhesive layer 102 is 20 μm, so that the heat dissipation effect can be enhanced by using the PET substrate 101 and the PET adhesive layer 102 with lower thicknesses.
Meanwhile, the two sides of the graphite layer 103 are provided with PET composite bonding surfaces 108, and the thickness of the PET composite bonding surfaces 108 is smaller than 2 μm, so that the cell and the external electric connector can be insulated and the composite graphite can be bonded with the cell shell by compounding the thin insulated PET base material and the PET adhesive layer.
Further, graphite layer 103 adopts heat conduction graphite flake structure, and graphite layer 103's thickness is 25 μm, and usable high heat conduction novel material graphite replaces traditional PET to carry out the cladding to electric core from this, plays electric core radiating effect.
Example 2:
the embodiment is different from embodiment 1 only in that two sides of the PET double-sided adhesive layer 104 are respectively bonded to the graphite layer 103 and the surface of the cell Al shell 105, and the surface of the heat exchange surface 106 is a smooth surface structure, so as to improve the surface adhesion degree during heat exchange.
Further, a pattern layer is arranged on the outer side of the PET substrate 101, and the pattern layer is made in a printing or carving mode so as to customize patterns.
Example 3:
the difference between this embodiment and embodiment 1 or 2 is only that the surface of the PET substrate 101 is provided with hollow holes, and the corners of the hollow holes are smooth, so that the heat dissipation performance of the surface of the PET substrate 101 is further improved by adopting a hollow pattern structure.
Further, an insulating oxide layer is arranged on the surface of the graphite layer 103, and the insulating oxide layer is one of aluminum oxide, copper oxide or silicon oxide, and boron oxide, so that the graphite surface is insulated by the oxide layer.
Meanwhile, the insulating surface 107 is of a graphite insulating surface structure, the insulating surface 107 is wrapped on the outer side of the PET substrate 101, the thickness of the insulating surface 107 is smaller than 5 micrometers, the insulating surface 107 structure is adopted to realize surface insulation of the PET substrate 101, electrostatic breakdown on the surface of the PET substrate 101 is avoided, and the protective performance is improved.
The working principle and the using process of the utility model are as follows:
the battery cell aluminum alloy composite heat-exchange plate is composed of a PET substrate 101, a graphite layer 103 and a PET double-sided adhesive layer 104, wherein the PET double-sided adhesive layer 104 is a double-sided adhesive tape, one side of the PET double-sided adhesive layer is bonded with a cell Al shell heat-exchange surface 106 to play a role in bonding and insulation, the other side of the PET double-sided adhesive layer is bonded with the graphite layer 103, and the PET substrate 101 is bonded with the graphite layer 103 through a PET adhesive layer 102 in a composite mode to play an external insulation role; as shown in figure 3, novel compound heat conduction graphite material can carry out the automatic cladding of electric core at the coating machine, can carry out different designs according to different product forms, like the equipment figure 1 in kind, the fretwork can also be done to part, reserves the exposed Al part of fretwork and beats to glue the bonding, strengthens whole module intensity, and the compound graphite edge of fretwork carries out secondary rubberizing insulation treatment simultaneously.
In the present invention, the term "plurality" means two or more unless explicitly defined otherwise. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It will be understood that when an element is referred to as being "mounted to," "secured to" or "disposed on" 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," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the claims and their equivalents.
Claims (10)
1. The utility model provides a novel square electricity core shell cladding structure which characterized in that includes: casing (100), casing (100) include PET substrate (101), graphite layer (103) and PET double-sided tape (104), the opposite side of PET double-sided tape (104) bonds and has electric core Al casing (105), the outside of electric core Al casing (105) is equipped with heat exchange surface (106), the outside of PET substrate (101) is equipped with insulating face (107).
2. The novel square cell shell coating structure of claim 1, wherein the thickness of the PET substrate (101) is 50 μm, the casing (100) further comprises a PET adhesive layer (102), and the thickness of the PET adhesive layer (102) is 20 μm.
3. The novel square cell shell cladding structure of claim 1, wherein two sides of the graphite layer (103) are provided with PET composite bonding surfaces (108), and the thickness of the PET composite bonding surfaces (108) is less than 2 μm.
4. The novel square cell casing cladding structure of claim 1, wherein the graphite layer (103) is of a thermally conductive graphite sheet structure, and the thickness of the graphite layer (103) is 25 μm.
5. The novel square cell shell coating structure of claim 1, wherein the PET double-sided adhesive layer (104) is a double-sided adhesive layer structure, and two sides of the PET double-sided adhesive layer (104) are respectively bonded to the graphite layer (103) and the surface of the cell Al shell (105).
6. The novel square cell casing cladding structure of claim 1, wherein the surface of the heat exchange surface (106) is a smooth surface structure.
7. The novel square battery cell casing cladding structure of claim 1, wherein a pattern layer is arranged on the outer side of the PET substrate (101), and the pattern layer is made by printing or carving.
8. The novel square battery cell casing cladding structure of claim 1, wherein the surface of the PET substrate (101) is provided with hollowed holes, and corners of the hollowed holes are rounded.
9. The novel square cell shell cladding structure of claim 1, wherein the graphite layer (103) has an insulating oxide layer on its surface, and the insulating oxide layer is one of alumina, copper oxide, silicon oxide, and boron oxide.
10. The novel square cell shell cladding structure of claim 1, wherein the insulating surface (107) is a graphite insulating surface structure, the insulating surface (107) wraps the outside of the PET substrate (101), and the thickness of the insulating surface (107) is less than 5 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123322020.5U CN216648430U (en) | 2021-12-27 | 2021-12-27 | Novel square cell shell cladding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123322020.5U CN216648430U (en) | 2021-12-27 | 2021-12-27 | Novel square cell shell cladding structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216648430U true CN216648430U (en) | 2022-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123322020.5U Active CN216648430U (en) | 2021-12-27 | 2021-12-27 | Novel square cell shell cladding structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216648430U (en) |
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2021
- 2021-12-27 CN CN202123322020.5U patent/CN216648430U/en active Active
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