CN219979625U - Soft packet of electric core top seal mould that possesses utmost point ear auxiliary heating function - Google Patents
Soft packet of electric core top seal mould that possesses utmost point ear auxiliary heating function Download PDFInfo
- Publication number
- CN219979625U CN219979625U CN202321059946.6U CN202321059946U CN219979625U CN 219979625 U CN219979625 U CN 219979625U CN 202321059946 U CN202321059946 U CN 202321059946U CN 219979625 U CN219979625 U CN 219979625U
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- CN
- China
- Prior art keywords
- sealing head
- top sealing
- auxiliary heating
- upper top
- head
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 116
- 238000007789 sealing Methods 0.000 claims abstract description 93
- 238000007731 hot pressing Methods 0.000 claims abstract description 15
- 239000002985 plastic film Substances 0.000 claims abstract description 14
- 229920006255 plastic film Polymers 0.000 claims abstract description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 abstract description 24
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 12
- 239000012528 membrane Substances 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 9
- 239000010410 layer Substances 0.000 description 10
- 238000004806 packaging method and process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000012536 packaging technology Methods 0.000 description 1
Classifications
-
- 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 package battery core top sealing die with a tab auxiliary heating function, which comprises an upper top sealing head, a lower top sealing head and an auxiliary heating component, wherein: the upper top sealing head and the lower top sealing head are arranged up and down correspondingly, a hot-pressing space is formed between the upper top sealing head and the lower top sealing head, and the aluminum plastic film wrapped on the tab is hot-pressed after the upper top sealing head and the lower top sealing head are pressed together; the auxiliary heating component is at least arranged on one of the upper top sealing head and the lower top sealing head; when the upper top sealing head and the lower top sealing head are pressed, the auxiliary heating component is abutted against the lug to heat the lug. Through set up auxiliary heating subassembly on at least one of upper top seal head and lower top seal head, carry out hot pressing process at the plastic-aluminum membrane on the utmost point ear, auxiliary heating subassembly can provide extra heat for the utmost point ear to ensure PP layer in the plastic-aluminum membrane and utmost point ear can fully melt, finally promote the hot pressing effect to the plastic-aluminum membrane, reduce the risk of electric core weeping and short circuit.
Description
Technical Field
The utility model belongs to the technical field of manufacturing of lithium ion battery cells, and particularly relates to a soft package battery cell top sealing die with a tab auxiliary heating function.
Background
In the lithium ion battery cell manufacturing industry, especially in the manufacturing process of a soft package battery cell, the packaging procedure between an aluminum plastic film and the battery cell is important, and the aluminum plastic film applied in the industry at present mainly comprises five parts structurally: nylon layer, al layer and PP layer, and tab adhesive layer therebetween.
The current packaging technology: and 3 factors of the packaging pressure, temperature and packaging time of the top sealing head are adjusted to melt and adhere the aluminum plastic film PP layer and the tab glue together, so that the top sealing process is completed. However, due to the difference of the materials of the tabs (aluminum for the positive electrode and copper for the negative electrode) and the difference of the materials, the areas and the volumes of the current collectors of the positive electrode and the negative electrode (aluminum foil for the positive electrode and copper foil for the negative electrode), the difference of the conduction heat speed is directly caused under the same conditions of temperature, pressure and packaging time, and the melting degree of the PP layer and the tab adhesive is difficult to reach the optimal state, so that the risks of battery core leakage and short circuit are increased, and the quality and consistency of products are affected.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a soft package battery core top sealing die with a tab auxiliary heating function, which has the following detailed technical scheme:
the utility model provides a soft packet of electricity core top seal mould that possesses utmost point ear auxiliary heating function, includes top seal head, lower top seal head and auxiliary heating subassembly, wherein:
the upper top sealing head and the lower top sealing head are arranged up and down correspondingly, a hot-pressing space is formed between the upper top sealing head and the lower top sealing head, and the aluminum plastic film wrapped on the tab is hot-pressed after the upper top sealing head and the lower top sealing head are pressed together;
the auxiliary heating component is at least arranged on one of the upper top sealing head and the lower top sealing head;
when the upper top sealing head and the lower top sealing head are pressed, the auxiliary heating component is abutted against the lug to heat the lug.
Through set up auxiliary heating subassembly on at least one of upper top seal head and lower top seal head, carry out hot pressing process at the plastic-aluminum membrane on the utmost point ear, auxiliary heating subassembly can provide extra heat for the utmost point ear to ensure PP layer in the plastic-aluminum membrane and utmost point ear can fully melt, thereby promote to plastic-aluminum membrane hot pressing effect, reduce the risk of electric core weeping and short circuit.
In some embodiments, the auxiliary heating assembly comprises a connecting bracket and a heating block, wherein: the connecting bracket is fixedly arranged on the upper top sealing head or the lower top sealing head; the heating block is arranged on the connecting bracket; when the upper top sealing head and the lower top sealing head are pressed, the heating block is abutted against the lug to heat the lug.
An auxiliary heating assembly with a simple structure is provided, and contact type heat removal of the lugs is implemented through a heating block.
In some embodiments, a resistance wire is arranged inside the heating block; the resistance wire heats the heating block when energized.
The resistance wire can heat the heating block, and flexible adjustment of the heating temperature of the heating block can be implemented.
In some embodiments, the heating block is a copper heating block.
The copper heating block has good heat conduction performance, so that the heating effect is further improved.
In some embodiments, the auxiliary heating assembly further comprises a buffer assembly disposed on the connection bracket, wherein: the heating block is connected to the connecting support through the buffer component, and when the upper top sealing head and the lower top sealing head are pressed, the heating block is elastically pressed against the lug.
The heating block is connected to the connecting support through the buffer component, so that the heating block can be ensured to stably press against the lug on one hand, and the lug can be prevented from being damaged or deformed due to overlarge pressure of the heating block on the other hand.
In some embodiments, the auxiliary heating assembly comprises a first auxiliary heating assembly and a second auxiliary heating assembly, wherein: the first auxiliary heating component is connected to the upper top sealing head, and the second auxiliary heating component is connected to the lower top sealing head; when the upper top sealing head and the lower top sealing head are pressed, the first auxiliary heating component is abutted against the upper surface of the tab, and the second auxiliary heating component is abutted against the lower surface of the tab.
The first auxiliary heating component and the second auxiliary heating component synchronously heat the lugs from the upper side and the lower side, so that the heating effect can be further improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.
FIG. 1 is a side cross-sectional block diagram of the present utility model;
fig. 1 includes: the upper top sealing head 1, the lower top sealing head 2, the first auxiliary heating assembly 31, the second auxiliary heating assembly 32, the connecting bracket 41, the heating block 42, the buffer assembly 43, the aluminum plastic film 51 and the tab 52.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the utility model. Rather, they are merely examples of apparatus and methods consistent with aspects of the utility model as detailed in the accompanying claims.
Because of the difference of the materials of the lugs (the positive electrode is aluminum, the negative electrode is copper) and the difference of the materials, the areas and the volumes of the current collectors of the positive electrode and the negative electrode (the positive electrode is aluminum foil and the negative electrode is copper foil), the difference of the speed of heat conduction under the same temperature, pressure and packaging time is directly caused, and the melting degree of the PP layer and the lug adhesive is difficult to reach the optimal state, so that the risks of battery cell leakage and short circuit are increased, and the quality and consistency of products are affected.
In view of the above, the utility model provides a soft-package battery cell top sealing die with a tab auxiliary heating function, which can provide extra heat for the tab in the hot-pressing process of an aluminum-plastic film on the tab, thereby ensuring that a PP layer and the tab in the aluminum-plastic film can be fully melted, finally improving the hot-pressing effect on the aluminum-plastic film, and reducing the risks of battery cell leakage and short circuit.
As shown in fig. 1, the soft package battery core top sealing mold in the embodiment of the utility model comprises an upper top sealing head 1, a lower top sealing head 2 and an auxiliary heating component, wherein:
the upper top sealing head 1 and the lower top sealing head 2 are arranged up and down correspondingly, a hot-pressing space is formed between the upper top sealing head 1 and the lower top sealing head 2, and after the upper top sealing head 1 and the lower top sealing head 2 are pressed together, the aluminum plastic film 51 wrapped on the lug 52 is hot-pressed.
The auxiliary heating component is arranged on at least one of the upper top sealing head 1 and the lower top sealing head 2.
When the upper top sealing head 1 and the lower top sealing head 2 are pressed, the auxiliary heating component is abutted against the tab 52 to heat the tab 52.
The working process of the soft package battery core top sealing die in the embodiment of the utility model is as follows:
in the initial state, the upper top seal head 1 and the lower top seal head 2 are separated from each other.
The tab 52 is sent between the upper top sealing head 1 and the lower top sealing head 2, and the aluminum plastic film 51 on the tab 52 is ensured to be just positioned in the hot-pressing space between the upper top sealing head 1 and the lower top sealing head 2.
And controlling the upper top sealing head 1 and the lower top sealing head 2 to press until the upper top sealing head 1 and the lower top sealing head 2 press the aluminum-plastic film 51 from the upper side and the lower side so as to implement hot pressing on the aluminum-plastic film 51. At the same time, the auxiliary heating component is driven by the upper top sealing head 1 and/or the lower top sealing head 2 to abut against the tab 52, so that the tab 52 is heated.
It can be seen that, through set up auxiliary heating subassembly on at least one of upper top seal head 1 and lower top seal head 2, upper top seal head 1 and lower top seal head 2 carry out the heat-sealing in-process to the plastic-aluminum membrane on the utmost point ear, and auxiliary heating subassembly can provide extra heat for the utmost point ear, and PP layer and the utmost point ear in the plastic-aluminum membrane can fully melt from the heat assurance, finally promotes the hot pressing effect to the plastic-aluminum membrane, reduces the risk of electric core weeping and short circuit.
To further enhance the heating effect on the tab 52, as shown in fig. 1, the auxiliary heating assembly may optionally include a first auxiliary heating assembly 31 and a second auxiliary heating assembly 32, wherein: the first auxiliary heating assembly 31 is connected to the upper top sealing head 1, and the second auxiliary heating assembly 32 is connected to the lower top sealing head 2. When the upper top sealing head 1 and the lower top sealing head 2 are pressed, the first auxiliary heating component 31 is abutted against the upper surface of the lug 52 under the driving of the upper top sealing head 1, and the second auxiliary heating component 32 is abutted against the lower surface of the lug 52 under the driving of the lower top sealing head 2. The first and second auxiliary heating assemblies 31 and 32 heat the tab 52 simultaneously from both upper and lower sides, thereby improving the heating effect of the tab 52.
Of course, in other alternative embodiments, only the first auxiliary heating assembly 31, or only the second auxiliary heating assembly 32, may be provided.
In the embodiment of the present utility model, the first auxiliary heating unit 31 and the second auxiliary heating unit 32 have the same structure, and the structure and the heating principle of the auxiliary heating unit will be described by taking the first auxiliary heating unit 31 as an example.
As shown in fig. 1, the first auxiliary heating assembly 31 includes a connection bracket 41 and a heating block 42, wherein: the connecting bracket 41 is fixedly arranged on the upper top sealing head 1. The heating block 42 is mounted on the connection bracket 41. When the upper top seal head 1 and the lower top seal head 2 are pressed, the heating block 42 abuts on the upper surface of the tab 52 to heat the tab 52 from the upper side.
Optionally, a resistance wire is disposed inside the heating block 42, and when the resistance wire is energized, heating is performed on the heating block 42, so that the heating block 42 has heating performance. Furthermore, by controlling the current of the resistance wire, flexible adjustment of the heating temperature of the heating block 42 can be implemented. Alternatively, the heating block 42 is a copper heating block having good heat conducting properties.
With continued reference to fig. 1, the first auxiliary heating assembly 31 may optionally further comprise a buffer assembly 43 disposed on the connecting bracket 41, wherein: the heating block 42 is connected to the connection bracket 41 via a buffer assembly 43. When the upper top seal head 1 and the lower top seal head 2 are pressed, the heating block 42 is elastically pressed against the tab. In this way, on the one hand, the heating block 42 can be ensured to stably press against the tab 52, and on the other hand, the tab is prevented from being damaged or deformed due to excessive pressure of the heating block 42.
The cushioning assembly 43 may be, for example, a spring.
Through set up auxiliary heating subassembly on at least one of upper top seal head and lower top seal head, carry out hot pressing process at the plastic-aluminum membrane on the utmost point ear, auxiliary heating subassembly can provide extra heat for the utmost point ear, and PP layer and utmost point ear in the plastic-aluminum membrane can fully melt from the heat assurance to promote to plastic-aluminum membrane hot pressing effect, reduce the risk of electric core weeping and short circuit.
Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. This utility model is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.
It is to be understood that the utility model is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.
Claims (7)
1. Soft packet of electric core top seal mould that possesses utmost point ear auxiliary heating function, its characterized in that, soft packet of electric core top seal mould includes top seal head, bottom top seal head and auxiliary heating subassembly, wherein:
the upper top sealing head and the lower top sealing head are arranged up and down correspondingly, a hot-pressing space is formed between the upper top sealing head and the lower top sealing head, and the upper top sealing head and the lower top sealing head are pressed together and then hot-pressed on the aluminum-plastic film wrapped on the lug;
the auxiliary heating component is at least arranged on one of the upper top sealing head and the lower top sealing head;
when the upper top sealing head and the lower top sealing head are pressed, the auxiliary heating component abuts against the tab to heat the tab.
2. The soft pack cell top seal mold of claim 1, wherein the auxiliary heating assembly comprises a connecting bracket and a heating block, wherein:
the connecting support is fixedly arranged on the upper top sealing head or the lower top sealing head;
the heating block is arranged on the connecting bracket;
when the upper top sealing head and the lower top sealing head are pressed, the heating block abuts against the lug to heat the lug.
3. The soft package cell top sealing die of claim 2, wherein a resistance wire is arranged inside the heating block; and the resistance wire heats the heating block when being electrified.
4. The soft pack cell top seal mold of claim 3, wherein the heating block is a copper heating block.
5. The soft pack cell top seal mold of claim 3, wherein the auxiliary heating assembly further comprises a buffer assembly disposed on the connecting bracket, wherein:
the heating block is connected to the connecting support through the buffer assembly, and when the upper top sealing head and the lower top sealing head are pressed, the heating block is elastically pressed against the pole lug.
6. The soft pack cell top seal mold of claim 5, wherein the buffer assembly is a spring.
7. The soft pack cell top seal mold of claim 1, wherein the auxiliary heating assembly comprises a first auxiliary heating assembly and a second auxiliary heating assembly, wherein: the first auxiliary heating component is connected to the upper top sealing head, and the second auxiliary heating component is connected to the lower top sealing head;
when the upper top sealing head and the lower top sealing head are pressed, the first auxiliary heating component abuts against the upper surface of the tab, and the second auxiliary heating component abuts against the lower surface of the tab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321059946.6U CN219979625U (en) | 2023-05-06 | 2023-05-06 | Soft packet of electric core top seal mould that possesses utmost point ear auxiliary heating function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321059946.6U CN219979625U (en) | 2023-05-06 | 2023-05-06 | Soft packet of electric core top seal mould that possesses utmost point ear auxiliary heating function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219979625U true CN219979625U (en) | 2023-11-07 |
Family
ID=88590883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321059946.6U Active CN219979625U (en) | 2023-05-06 | 2023-05-06 | Soft packet of electric core top seal mould that possesses utmost point ear auxiliary heating function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219979625U (en) |
-
2023
- 2023-05-06 CN CN202321059946.6U patent/CN219979625U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |