CN213583952U - Top seal head and laminate polymer battery's top side packaging machine - Google Patents
Top seal head and laminate polymer battery's top side packaging machine Download PDFInfo
- Publication number
- CN213583952U CN213583952U CN202022469244.8U CN202022469244U CN213583952U CN 213583952 U CN213583952 U CN 213583952U CN 202022469244 U CN202022469244 U CN 202022469244U CN 213583952 U CN213583952 U CN 213583952U
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- China
- Prior art keywords
- seal head
- lug groove
- groove
- notch
- top seal
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- 238000004806 packaging method and process Methods 0.000 title claims abstract description 15
- 229920000642 polymer Polymers 0.000 title abstract description 6
- 238000007789 sealing Methods 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 3
- 239000003292 glue Substances 0.000 abstract description 24
- 229910052751 metal Inorganic materials 0.000 abstract description 13
- 239000002184 metal Substances 0.000 abstract description 13
- 230000007704 transition Effects 0.000 abstract description 13
- 239000002985 plastic film Substances 0.000 abstract description 10
- 229920006255 plastic film Polymers 0.000 abstract description 10
- 239000007788 liquid Substances 0.000 abstract description 6
- 238000001125 extrusion Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 229910052782 aluminium Inorganic materials 0.000 description 11
- 239000012528 membrane Substances 0.000 description 9
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 206010011469 Crying Diseases 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005538 encapsulation 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
-
- 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 top seal head and laminate polymer battery's top side packaging machine relates to battery production technical field. The top seal head is provided with a polar lug groove which is matched with a polar lug of the soft package battery, wherein the side wall of the polar lug groove comprises a vertical section and an inclined section, one end of the inclined section is connected with the bottom of the polar lug groove and extends from the bottom of the polar lug groove to the opening, and the other end of the inclined section is connected with the vertical section; and a pressure relief part is arranged at the bottom of the pole lug groove and used for guiding the energy release of the soft package battery during thermal runaway. When the top seal head provided by the utility model is used for packaging a battery, the arrangement of the inclined section avoids the damage of the aluminum-plastic film caused by the sudden height difference of the transition region between the metal sheet and the tab glue, thereby reducing the leakage risk; the space enclosed by the inclined section and the vertical section reduces the extrusion force of the top seal head on the tab glue in the transition area of the metal sheet and the tab glue, and avoids the risk of liquid leakage caused by the fracturing of the tab glue; and the directional management of thermal runaway is realized.
Description
Technical Field
The utility model relates to a production technical field of battery especially relates to a top seal head and laminate polymer battery's top side packaging machine.
Background
Soft packet of battery encapsulates by the soft bag of battery, the soft bag of battery is generally made by the plastic-aluminum membrane, battery tab is made by the metal, when the encapsulation, during the cavity that plastic-aluminum membrane upper cover and plastic-aluminum membrane drain pan formed is arranged in to electric core, anodal ear and negative pole ear are drawn forth along the angularity limit of plastic-aluminum membrane upper cover and plastic-aluminum membrane drain pan laminating, anodal ear and negative pole ear have the utmost point ear to glue with the surface subsides of angularity limit contact, then encapsulate through the top head, the top head includes upper cover and low head, extrude the angularity limit of plastic-aluminum membrane upper cover and plastic-aluminum membrane drain pan laminating through upper cover and low head in order to encapsulate the battery.
At present, the top seal head adopts right-angle transition in a transition area of metal and tab glue, abrupt height difference exists, and when the tab glue cannot be filled, the phenomenon of liquid leakage easily occurs. In the prior art, the top seal head inclines the side wall of the lug groove from the groove bottom to the opening to the outer side of the groove, so that the risks of damage of an aluminum-plastic film and leakage caused by right-angle transition are avoided, but in a transition region of metal and lug glue, the extrusion force of the upper seal head and the lower seal head is too large, and the lug glue is easy to fracture to cause leakage; and the top seal head in the prior art is not provided with a pressure relief area, so that the management of the thermal runaway of the battery core is inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a top seal head and a top side packaging machine of a soft package battery, the soft package battery packaged by the top seal head is not easy to crack tab glue, and liquid leakage is avoided; and directional pressure relief can be realized.
To achieve the purpose, the utility model adopts the following technical proposal:
a top seal head is provided with an electrode lug groove, the electrode lug groove is matched with an electrode lug of a soft package battery, the side wall of the electrode lug groove comprises a vertical section and an inclined section, one end of the inclined section is connected with the bottom of the electrode lug groove and extends from the bottom of the electrode lug groove to an opening, and the other end of the inclined section is connected with the vertical section; and a pressure relief part is arranged at the bottom of the pole lug groove and used for guiding the energy release of the soft package battery during thermal runaway.
Optionally, the height of the vertical section is 0.05mm to 0.3 mm.
Optionally, the pressure relief portion is a notch, the notch does not penetrate through the bottom of the tab slot, and an extension line of one side of the notch coincides with an extension line of one side of the bottom of the tab slot.
Optionally, the maximum length of the notch is the same as the length of the bottom of the pole ear slot.
Optionally, the depth of the notch is 0.3mm to 2 mm.
Optionally, the positive electrode ear slot includes a positive electrode ear slot and a negative electrode ear slot, and the notch is disposed in the positive electrode ear slot and/or the negative electrode ear slot.
Optionally, the minimum separation distance between the positive electrode lug groove and the negative electrode lug groove is 2 mm.
Optionally, the cross section of the notch is an isosceles trapezoid, and an included angle between straight lines where two waist lengths of the isosceles trapezoid are located is 120 °.
Optionally, the lower base of the isosceles trapezoid coincides with an extension line of one side of the bottom of the polar ear groove.
A top side packaging machine of a soft package battery comprises the top sealing head.
The utility model has the advantages that:
the utility model provides a top seal head, the slope section on the utmost point ear groove lateral wall matches with the marginal angle that the sheetmetal skives, has avoided the sheetmetal to glue with utmost point ear transition region sudden change the difference in height cause plastic-aluminum membrane damage, has reduced the emergence of weeping risk; and the space enclosed by the inclined section and the vertical section reduces the extrusion force of the top seal head on the tab glue in the transition area of the metal sheet and the tab glue, and avoids the leakage risk caused by the fracturing of the tab glue. Set up the pressure relief portion in the bottom of utmost point ear groove, when electric core took place the thermal runaway, the banding of utmost point ear department was changeed for other positions and is broken, can in time with the energy release of electric core thermal runaway, has realized the directional management of thermal runaway.
The utility model provides a laminate polymer battery's top side packaging machine, including foretell top seal head. The soft-package battery packaged by the top side packaging machine of the soft-package battery is not easy to leak liquid, and the oriented management of thermal runaway can be realized.
Drawings
Fig. 1 is a schematic structural view of a top seal head according to an embodiment of the present invention;
FIG. 2 is a schematic view of the structure at A in FIG. 1;
fig. 3 is a schematic structural view of a packaged tab according to an embodiment of the present invention;
fig. 4 is a schematic diagram of the enlarged view at B in fig. 3 showing the correspondence between the tab position and the tab groove position of the capping and sealing head.
In the figure:
100. a tab; 200. sealing the end socket;
101. a metal sheet; 102. gluing a tab; 103. an aluminum-plastic film;
1. a positive electrode lug groove; 2. a negative electrode tab slot; 3. a notch; 4. a glue avoiding groove;
11. a vertical section; 12. an inclined section.
Detailed Description
In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
As shown in fig. 1-2, the embodiment provides a top seal head, a tab slot is provided on the top seal head 200, the tab slot is matched with a tab 100 of a battery, wherein a side wall of the tab slot includes a vertical section 11 and an inclined section 12, one end of the inclined section 12 is connected with a bottom of the tab slot and extends from the bottom of the tab slot to an opening, and the other end of the inclined section 12 is connected with the vertical section 11; and a pressure relief part is arranged at the bottom of the pole lug groove and used for guiding the energy release of the soft package battery during thermal runaway.
In the top seal end socket provided by the embodiment, the inclined section 12 on the side wall of the tab slot is matched with the thinned edge of the metal sheet 101, so that the aluminum-plastic film 103 is prevented from being damaged due to the sudden height difference of the transition region between the metal sheet 101 and the tab glue 102, and the liquid leakage risk is reduced; and the space enclosed by the inclined section 12 and the vertical section 11 reduces the extrusion force of the top seal head 200 on the tab glue 102 in the transition area of the metal sheet 101 and the tab glue 102, and avoids the leakage risk caused by fracturing the tab glue 102. Set up the pressure relief portion in the bottom of utmost point ear groove, when electric core takes place the thermal runaway, the banding of utmost point ear 100 department is changeed for other positions and is broken, can in time with the energy release of electric core thermal runaway, has realized the directional management of thermal runaway.
In this embodiment, the top sealing head 200 includes an upper head and a lower head, which are symmetrically disposed. As shown in fig. 3, in the production process of the soft package battery, the battery core is arranged in a cavity formed by upper and lower aluminum-plastic films 103, the positive tab and the negative tab are led out along the warped corner edge jointed by the two aluminum-plastic films 103, the positive tab and the negative tab are made of metal sheets 101, tab glue 102 is pasted on the surfaces of the positive tab and the negative tab contacting with the warped corner edge, the warped corner edge jointed by the two aluminum-plastic films 103 is arranged between the upper end enclosure and the lower end enclosure for press mounting, so that the battery core is packaged, and the electrolyte in the battery core is prevented from leaking.
Alternatively, as shown in fig. 2 and 4, the height of the vertical section 11 is 0.05mm to 0.3 mm. In the present embodiment, the height of the vertical section 11 is 0.1 mm. It is easily understood that if the vertical section 11 is not provided, the aluminum plastic film 103 of the inclined section 12 contacts the tab adhesive 102 under the pressure of the head seal 200, and the pressure of the head seal 200 on the aluminum plastic film 103 is directly applied to the tab adhesive 102, so that the tab adhesive 102 is easily cracked, and the electrolyte leaks out. Through setting up vertical section 11 for certain space has between sheetmetal 101 and the plastic-aluminum membrane 103, and the top head 200 can not directly exert the extrusion force on utmost point ear is glued 102, thereby has reduced utmost point ear and has glued 102 fracturing's risk.
Optionally, the horizontal length of the inclined section 12 is at least 2 mm. In the present embodiment, in the transition region between the metal sheet 101 and the tab glue 102, to avoid the right-angle transition, both ends of the metal sheet 101 are thinned, so that the two are in the oblique transition.
Optionally, the pressure relief portion is a notch 3, the notch 3 does not penetrate through the bottom of the polar ear groove, and an extension line of one side of the notch 3 coincides with an extension line of one side of the bottom of the polar ear groove. The maximum length of the notch 3 is the same as the length of the bottom of the pole ear slot. In this embodiment, when the tab 100 is packaged with the aluminum-plastic film 103, two side edges of the bottom of the tab slot are package weak areas. The pressure relief part is arranged in the packaging weak area, so that the release of thermal runaway energy is facilitated. The length of the notch 3 may be a part of the length of the bottom of the tab slot, and the maximum length may be the same as the length of the bottom of the tab slot.
Alternatively, as shown in fig. 1, the tab slot includes a positive electrode tab slot 1 and a negative electrode tab slot 2, and the notch 3 is disposed in the positive electrode tab slot 1 and/or the negative electrode tab slot 2. In the present embodiment, the notch 3 is provided in the positive electrode tab slot 1. In other embodiments, the notch 3 may be provided in the negative electrode tab slot 2, or the notches 3 may be provided in both the positive electrode tab slot 1 and the negative electrode tab slot 2.
Optionally, the minimum separation distance between the positive electrode tab slot 1 and the negative electrode tab slot 2 is 2 mm. In this embodiment, positive tab and negative tab are located laminate polymer battery's one end, and positive tab and negative tab are located same straight line, and the utmost point ear glue 102 that length is 1mm at least is all left at the both ends of every utmost point ear 100 to avoid the emergence of weeping. Therefore, the minimum distance between the anode lug grooves 1 and the cathode lug grooves 2 which are positioned on the same straight line is 2 mm.
In this embodiment, still be provided with on the top seal head 200 and keep away gluey groove 4, keep away gluey groove 4 and set up to two, keep away gluey groove 4 for two and be located the both sides of anodal ear groove 1 and anodal ear groove 2 of negative pole respectively. The glue avoiding groove 4 is used for accommodating glue overflow generated after the packaging shell is heated, and effectively prevents the top sealing head 200 from being polluted.
Optionally, the depth of the notch 3 is 0.3mm to 2 mm. The stress concentration degree at the packaging notch 3 can be controlled by adjusting the length and the depth of the notch 3, and the maximum release energy which can be borne by the pressure relief part is determined.
Preferably, the cross section of the notch 3 is an isosceles trapezoid, and the included angle between the straight lines where the two waist lengths of the isosceles trapezoid are located is 120 °. The lower bottom edge of the isosceles trapezoid is superposed with the extension line of one side edge of the bottom of the polar ear groove. In this embodiment, set up the pressure relief portion to the contained angle that two waist length place straight lines be 120 isosceles trapezoid for the pressure relief effect of pressure relief portion is better. Of course, in other embodiments, the cross section of the notch 3 may have other shapes such as an arc shape or a square shape.
The embodiment also provides a top side packaging machine of the soft package battery, which comprises the top sealing head. The soft-package battery packaged by the top side packaging machine of the soft-package battery is not easy to leak liquid, and the oriented management of thermal runaway can be realized.
The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.
Claims (10)
1. A top seal head is provided with an electrode lug groove on a top seal head (200), the electrode lug groove is matched with an electrode lug (100) of a soft package battery, and the top seal head is characterized in that the side wall of the electrode lug groove comprises a vertical section (11) and an inclined section (12), one end of the inclined section (12) is connected with the bottom of the electrode lug groove and extends from the bottom of the electrode lug groove to an opening, and the other end of the inclined section (12) is connected with the vertical section (11); and a pressure relief part is arranged at the bottom of the pole lug groove and used for guiding the energy release of the soft package battery during thermal runaway.
2. A cap seal according to claim 1, characterized in that the height of the vertical section (11) is 0.05-0.3 mm.
3. The head sealing head according to claim 1, wherein the pressure relief portion is a notch (3), the notch (3) does not penetrate through the bottom of the polar lug groove, and one side of the notch (3) coincides with an extension line of one side of the bottom of the polar lug groove.
4. A cap seal head according to claim 3, characterized in that the maximum length of the notch (3) is the same as the length of the bottom of the polar ear slot.
5. A cap seal head according to claim 4, characterized in that the depth of the notch (3) is 0.3 mm-2 mm.
6. The top seal head according to claim 3, wherein the polar ear grooves comprise a positive polar ear groove (1) and a negative polar ear groove (2), and the notch (3) is arranged in the positive polar ear groove (1) and/or the negative polar ear groove (2).
7. The head seal head according to claim 6, characterized in that the minimum separation distance between the positive pole ear groove (1) and the negative pole ear groove (2) is 2 mm.
8. A cap seal according to claim 3, characterized in that the cross section of the gap (3) is an isosceles trapezoid, and the included angle between the straight lines of the two sides of the isosceles trapezoid is 120 °.
9. The tip sealing head according to claim 8, wherein the lower base of the isosceles trapezoid coincides with an extension of one of the sides of the bottom of the polar ear slot.
10. A top side packaging machine for soft package batteries, characterized by comprising the top sealing head according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022469244.8U CN213583952U (en) | 2020-10-30 | 2020-10-30 | Top seal head and laminate polymer battery's top side packaging machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022469244.8U CN213583952U (en) | 2020-10-30 | 2020-10-30 | Top seal head and laminate polymer battery's top side packaging machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213583952U true CN213583952U (en) | 2021-06-29 |
Family
ID=76531415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022469244.8U Active CN213583952U (en) | 2020-10-30 | 2020-10-30 | Top seal head and laminate polymer battery's top side packaging machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213583952U (en) |
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2020
- 2020-10-30 CN CN202022469244.8U patent/CN213583952U/en active Active
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