CN216488203U - Electricity core heat-seal packaging hardware - Google Patents
Electricity core heat-seal packaging hardware Download PDFInfo
- Publication number
- CN216488203U CN216488203U CN202120859230.9U CN202120859230U CN216488203U CN 216488203 U CN216488203 U CN 216488203U CN 202120859230 U CN202120859230 U CN 202120859230U CN 216488203 U CN216488203 U CN 216488203U
- Authority
- CN
- China
- Prior art keywords
- head
- seal packaging
- packaging device
- end enclosure
- shape memory
- 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.)
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Links
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 18
- 230000005611 electricity Effects 0.000 title claims description 3
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052802 copper Inorganic materials 0.000 claims abstract description 8
- 239000010949 copper Substances 0.000 claims abstract description 8
- 230000007704 transition Effects 0.000 claims description 4
- 229910017518 Cu Zn Inorganic materials 0.000 claims description 3
- 229910017752 Cu-Zn Inorganic materials 0.000 claims description 3
- 229910017943 Cu—Zn Inorganic materials 0.000 claims description 3
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 24
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract description 5
- 229910001416 lithium ion Inorganic materials 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000956 alloy Substances 0.000 description 7
- 229910000734 martensite Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- 230000009466 transformation Effects 0.000 description 4
- 229910001566 austenite Inorganic materials 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000012858 packaging process Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 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)
Abstract
The utility model discloses a cell heat-sealing packaging device, which belongs to the technical field of lithium ion battery manufacturing and comprises an upper sealing head and a lower sealing head, wherein heating rods are arranged in the upper sealing head and the lower sealing head, and the upper sealing head and the lower sealing head are both prepared from copper-based shape memory alloy. The packaging device can solve the problem of untight sealing in the top sealing process of the soft-package battery.
Description
Technical Field
The utility model relates to the technical field of lithium ion battery manufacturing, in particular to a battery cell heat-sealing packaging device.
Background
The lithium ion battery is an energy storage device which realizes the storage and release of electric energy by the back-and-forth movement of Li +, and is widely applied to 3c digital and new energy automobiles. With the gradual popularization of automobile electromotion, the requirements for improving the energy density and reducing the cost of the lithium ion battery are higher and higher. The soft package battery adopts the aluminum plastic film as the packaging material, has the characteristics of light weight and high energy density, and is considered as an important direction for the development of future power lithium ion batteries. Compared with the traditional hard-shell battery cell, the heat packaging of the soft-package battery cell is a great technical difficulty, particularly the top sealing, and the quality of the packaging effect is directly related to the service life and the safety of the battery cell. The traditional top seal generally adopts a common hard seal or soft seal process, and the condition of liquid leakage or air leakage is easy to occur.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the background technology and solve the problem of poor packaging in the top sealing process of the soft package battery.
In order to achieve the purpose, the cell heat-sealing packaging device comprises an upper end enclosure and a lower end enclosure, wherein heating rods are arranged inside the upper end enclosure and the lower end enclosure, and the upper end enclosure and the lower end enclosure are both prepared from copper-based shape memory alloy.
Furthermore, the upper end enclosure is fixedly connected with an upper base, and the lower end enclosure is fixedly connected with a lower base.
Further, the thickness of the upper end socket and the lower end socket is 5-7 mm.
Further, the copper-based shape memory alloy is a Cu-Zn shape memory alloy.
Furthermore, the phase change starting temperature of the upper end socket and the lower end socket is more than 160 ℃, and the terminating temperature is more than 190 ℃.
Furthermore, the end part of the upper sealing head is provided with a protruding part, and the end part of the lower sealing head is provided with a notch matched with the protruding part.
Compared with the prior art, the utility model has the following technical effects: when the battery core heat sealing device disclosed by the utility model is used for packaging a battery core, when an upper end socket is pressed down to be contacted with a battery, the heating rod is not heated at the moment, the alloy material is in a low-temperature phase martensite below the transformation temperature, and the alloy material has good pseudo elasticity and deforms under the action of pressure so as to be better fit with the surface of the battery; and then the seal head is heated, so that the temperature is rapidly raised, the temperature is raised to be higher than the transition temperature, the alloy material is transformed from low-temperature phase martensite to high-temperature phase austenite, the notch of the seal head is expanded downwards, a compensation effect is formed at the top seal position of the electric core, downward stress feedback is formed, the pressure at the tab glue position is improved, the seal strength is improved, the condition that the tab glue position in a tab triangular area is not folded and sealed tightly is ensured, and the phenomena of liquid leakage and gas expansion at the top seal position of the battery can be avoided.
Drawings
The following detailed description of embodiments of the utility model refers to the accompanying drawings in which:
fig. 1 is a structural diagram of a cell heat-seal packaging device.
In the figure:
1-upper base, 2-lower base, 3-upper end enclosure, 4-lower end enclosure, 5-heating rod, 31-lug boss and 41-notch.
Detailed Description
The following detailed description of embodiments of the utility model refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the utility model, are given by way of illustration and explanation only, not limitation.
In the embodiments of the present invention, unless otherwise specified, the use of directional terms such as "upper, lower, top, and bottom" is generally used with respect to the orientation shown in the drawings or the positional relationship of the components with respect to each other in the vertical, or gravitational direction.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between the various embodiments can be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not be within the protection scope of the present invention.
As shown in fig. 1, the embodiment discloses a cell heat sealing and packaging device, which includes an upper end enclosure 3 and a lower end enclosure 4, wherein heating rods 5 are respectively disposed inside the upper end enclosure 3 and the lower end enclosure 4, and the upper end enclosure 3 and the lower end enclosure 4 are both made of copper-based shape memory alloy.
In the embodiment, the end socket is made of the copper-based shape memory alloy, and by utilizing the characteristics of the shape memory alloy, when the upper end socket 3 is pressed down to be in contact with the battery, the heating rod 5 is not heated at the moment, the alloy material is in a low-temperature phase martensite below the transformation temperature, and has good pseudo elasticity, and the alloy material is deformed under the action of pressure so as to be better fitted with the surface of the battery; and then heating the end enclosure to rapidly raise the temperature, wherein the temperature is raised to be higher than the transformation temperature, and the alloy material is transformed from low-temperature phase martensite to high-temperature phase austenite to realize the encapsulation of the battery core. Meanwhile, the heating rods 5 are arranged in the upper sealing head 3 and the lower sealing head 4, so that the heating balance can be ensured.
As a further preferred technical scheme, the upper end enclosure 3 is fixedly connected with an upper base 1, and the lower end enclosure 4 is fixedly connected with a lower base 2. Specifically, the upper end enclosure 3 is fixedly connected with the upper base 1 through bolts, the lower end enclosure 4 is fixedly connected with the lower base 2 through bolts, and the upper base 1 and the lower base 2 are used for fixing the upper end enclosure 3 and the lower end enclosure 4 on equipment.
As a further preferable technical scheme, the thicknesses of the upper seal head 3 and the lower seal head 4 are 5-7 mm. In the electric core packaging process, if head thickness is too thin, required pressure when can't guarantee the plastic-aluminum membrane encapsulation, if head thickness is too thick, increase equipment cost, increase the bearing simultaneously.
As a further preferred aspect, the copper-based shape memory alloy includes, but is not limited to, a Cu-Zn shape memory alloy.
As a further preferable technical scheme, the phase transition starting temperature of the upper end enclosure 3 and the lower end enclosure 4 is more than 160 ℃, and the terminating temperature is more than 190 ℃.
As a further preferable technical scheme, a protruding portion 31 is arranged at the end of the upper sealing head 3, and a notch 41 matched with the protruding portion is arranged at the end of the lower sealing head 4.
Because the lower head 4 is provided with the step-mounted groove, the upper head 3 is provided with the protruding part matched with the steps of the lower head 4, the temperature rises rapidly when the temperature of the head rises to be higher than the transformation temperature, the alloy material is transformed from low-temperature phase martensite to high-temperature phase austenite, so that the notch of the head expands downwards, a compensation effect is formed at the top sealing part of the electric core, downward stress feedback is formed, the pressure at the tab glue part is improved, the sealing strength is improved, the condition that the tab glue part in the tab triangular area is not folded or sealed tightly is ensured, and the phenomena of liquid leakage and gas expansion at the top sealing part of the battery can be avoided.
Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the embodiments of the present invention are not limited to the details of the above embodiments, and various simple modifications can be made to the technical solution of the embodiments of the present invention within the technical idea of the embodiments of the present invention, and the simple modifications all belong to the protection scope of the embodiments of the present invention.
Claims (6)
1. The utility model provides a electricity core heat-seal packaging hardware, its characterized in that includes upper cover and low head, and upper cover and low head are inside all to be equipped with the heating rod, and upper cover and low head all adopt copper base shape memory alloy to prepare.
2. The battery cell heat-seal packaging device of claim 1, wherein the upper end enclosure is fixedly connected with an upper base, and the lower end enclosure is fixedly connected with a lower base.
3. The battery cell heat-seal packaging device of claim 1, wherein the thickness of the upper head and the lower head is 5-7 mm.
4. The cell heat-seal packaging device of claim 1, wherein the copper-based shape memory alloy is a Cu-Zn shape memory alloy.
5. The cell heat-seal packaging device of claim 1, wherein the phase transition starting temperature of the upper head and the lower head is greater than 160 ℃ and the phase transition ending temperature is greater than 190 ℃.
6. The electric core heat-seal packaging device of any one of claims 1 to 5, wherein the upper end cap is provided with a protrusion, and the lower end cap is provided with a notch adapted to the protrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120859230.9U CN216488203U (en) | 2021-04-23 | 2021-04-23 | Electricity core heat-seal packaging hardware |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120859230.9U CN216488203U (en) | 2021-04-23 | 2021-04-23 | Electricity core heat-seal packaging hardware |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216488203U true CN216488203U (en) | 2022-05-10 |
Family
ID=81393695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120859230.9U Active CN216488203U (en) | 2021-04-23 | 2021-04-23 | Electricity core heat-seal packaging hardware |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216488203U (en) |
-
2021
- 2021-04-23 CN CN202120859230.9U patent/CN216488203U/en active Active
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