CN213716941U - Soft-package battery roll core shell-entering mechanism - Google Patents
Soft-package battery roll core shell-entering mechanism Download PDFInfo
- Publication number
- CN213716941U CN213716941U CN202022534127.5U CN202022534127U CN213716941U CN 213716941 U CN213716941 U CN 213716941U CN 202022534127 U CN202022534127 U CN 202022534127U CN 213716941 U CN213716941 U CN 213716941U
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- Prior art keywords
- shell
- core
- connecting rod
- entering
- shaping
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- Expired - Fee Related
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- 238000007493 shaping process Methods 0.000 claims abstract description 45
- 238000001179 sorption measurement Methods 0.000 claims abstract description 19
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 13
- 238000005096 rolling process Methods 0.000 claims abstract description 12
- 238000004804 winding Methods 0.000 claims abstract description 10
- 239000012528 membrane Substances 0.000 claims abstract description 9
- 229920000642 polymer Polymers 0.000 claims abstract description 7
- 239000002985 plastic film Substances 0.000 claims abstract description 5
- 229920006255 plastic film Polymers 0.000 claims abstract description 5
- 238000010521 absorption reaction Methods 0.000 claims abstract description 3
- 238000003825 pressing Methods 0.000 claims abstract description 3
- 239000011258 core-shell material Substances 0.000 claims description 9
- 239000011159 matrix material Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 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
Abstract
The utility model belongs to the technical field of processing of soft package batteries, in particular to a shell mechanism for winding cores of soft package batteries, which comprises a rotating machine platform, a hydraulic lifting frame arranged on the rotating machine platform, and a shell shaping assembly and a winding core shell-entering assembly which are respectively arranged at two ends of the top of the hydraulic lifting frame; the shell reshaping component is used for reshaping the aluminum-plastic film shell before the shell is placed into the winding core; roll up core income shell subassembly and push the absorption income shell subassembly in the plastic-aluminum membrane casing after being used for carrying out vacuum adsorption to rolling up the big terminal surface of core and fixing to and be used for pressing from both sides the clamping jaw subassembly of tight fixing to rolling up the core side. The utility model provides a laminate polymer battery rolls up core and goes into shell mechanism, not only dispersible mechanism applies in the local stress that rolls up the core surface, can go into the shell and carry out the plastic to the plastic-aluminum membrane casing rolling up the core moreover to effectual holistic production quality of electric core that has improved.
Description
Technical Field
The utility model belongs to the technical field of the processing of laminate polymer battery, concretely relates to laminate polymer battery rolls up core and goes into shell mechanism.
Background
Roll up a core and go into the shell is an important process in electric core production process, among the prior art, generally adopt to press from both sides tight the mode of snatching or sucking disc is adsorbed to roll up the core and snatch, then will roll up the core and push electric core casing in, cause great local stress to roll up the core surface easily, cause to roll up the core and take place to warp.
And the roll core income shell mechanism among the prior art generally directly is used for accomplishing the income shell operation of roll core, and to the frivolous plastic-aluminum membrane casing of texture, its in-process at the material loading takes place to warp easily and buckles, if not push preceding plastic to the plastic-aluminum membrane casing at the roll core, often makes the electric core after the processing completion have a quality problem easily.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model provides a soft-package battery rolls up core income shell mechanism.
The utility model discloses the technological effect that will reach realizes through following technical scheme:
the utility model provides a soft package battery roll core case entering mechanism, which comprises a rotating machine platform, a hydraulic lifting frame arranged on the rotating machine platform, and a shell shaping component and a roll core case entering component which are respectively arranged at the two ends of the top of the hydraulic lifting frame; the shell reshaping component is used for reshaping the aluminum-plastic film shell before the shell is placed into the winding core; roll up core income shell subassembly and push the absorption income shell subassembly in the plastic-aluminum membrane casing after being used for carrying out vacuum adsorption to rolling up the big terminal surface of core and fixing to and be used for pressing from both sides the clamping jaw subassembly of tight fixing to rolling up the core side.
Furthermore, the adsorption shell entering assembly comprises a shell entering assembly mounting rod connected to the top of the hydraulic lifting frame, a vacuum adsorption cavity connected to the bottom of the shell entering assembly mounting rod and matched with the large end face of the winding core, and a vacuumizing device communicated with the interior of the vacuum adsorption cavity; and the bottom of the vacuum adsorption cavity is provided with a vacuum adsorption hole.
Further, adsorb into shell subassembly including even in the income shell subassembly installation pole at hydraulic lift frame top, locate go into the sucking disc mounting panel of shell subassembly installation pole bottom to and the matrix distribution in vacuum chuck group on the sucking disc mounting panel.
Further, the clamping jaw assembly comprises a clamping jaw linkage rod arranged on the shell assembly mounting rod and a pneumatic clamping jaw arranged on the clamping jaw linkage rod and used for clamping two longer side edges of the roll core.
Furthermore, the pneumatic clamping jaws are symmetrically arranged on the clamping jaw linkage rod, and the number of the pneumatic clamping jaws is one or more than one.
Further, the shell body shaping assembly comprises a shaping assembly mounting rod connected to the top of the hydraulic lifting frame and a battery cell profiling block vertically arranged at the bottom of the shaping assembly mounting rod.
Further, the shell body shaping assembly comprises a shaping assembly mounting rod connected to the top of the hydraulic lifting frame, a connecting rod vertically arranged at the bottom of the shaping assembly mounting rod, and right-angle shaping strips vertically arranged at two ends of the connecting rod.
Further, the casing plastic subassembly including link in the plastic subassembly installation pole at hydraulic elevator frame top, locate perpendicularly "worker" style of calligraphy connecting rod of plastic subassembly installation pole bottom to and locate perpendicularly the right angle shaping piece of four tip of "worker" style of calligraphy connecting rod.
Further, the casing plastic subassembly including link in plastic unit mount pole at hydraulic lift frame top, locate perpendicularly the first elastic connecting rod of plastic unit mount pole bottom is located perpendicularly the second elastic connecting rod at first elastic connecting rod both ends to and locate perpendicularly the right angle shaping piece at second elastic connecting rod both ends.
Further, first elastic connecting rod and second elastic connecting rod all include the middle part connecting rod, divide and locate the end connection pole at middle part connecting rod both ends, and locate the elastic expansion piece between middle part connecting rod and the end connection pole.
To sum up, the utility model discloses a laminate polymer battery rolls up core income shell mechanism has following useful part at least:
the utility model discloses a soft-packaged battery rolls up core and goes into shell mechanism adopts the fixed mode that vacuum adsorption and clamping jaw clamp tightly combined together to snatch the core, can effectual dispersion mechanism exert the stress on rolling up the core, avoid snatching the stress and concentrate on the local position of rolling up the core, cause the core to warp, influence the quality of electric core; and before the roll core enters the shell, the plastic-aluminum film shell is shaped, so that the plastic-aluminum film shell is prevented from deforming and affecting the quality of the electric core after entering the shell.
Drawings
Fig. 1 is the embodiment of the utility model provides an in the embodiment of the utility model provides a laminate polymer battery rolls up the structural schematic diagram of core income shell mechanism.
Fig. 2 is a schematic structural diagram of the housing reshaping component in the embodiment of the present invention.
Fig. 3 is a side view of the structure of the roll core-in-shell assembly according to embodiments 1-4 of the present invention.
Fig. 4 is a side view of another structure of the roll core-in-shell assembly according to embodiments 1-4 of the present invention.
Fig. 5 is a schematic structural view of a first elastic connecting rod and a second elastic connecting rod in embodiment 4 of the present invention.
Fig. 6 is a side view of the structure of the roll core-in-shell assembly according to embodiments 5-8 of the present invention.
Fig. 7 is a side view of another embodiment of a roll core-in-shell assembly according to embodiments 5-8 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention will be combined to clearly and completely describe the technical solutions of the embodiments of the present invention. The described embodiments are some, but not all embodiments of the invention.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in the attached drawing 1, the core-in-shell mechanism for the soft-package battery of the present invention comprises a rotary machine 10, a hydraulic lifting frame 20 disposed on the rotary machine 10, and a shell shaping assembly 30 and a core-in-shell assembly 40 respectively disposed at two ends of the top of the hydraulic lifting frame 20; wherein, casing plastic subassembly 30 is used for carrying out the plastic to putting into the plastic-aluminum membrane casing before rolling up the core, rolls up core income shell subassembly 40 and is used for snatching after rolling up the core, pushes away and places in the plastic-aluminum membrane casing.
Example 1:
in a preferred embodiment, the housing shaping assembly 30 includes a shaping assembly mounting rod 31 connected to the top of the hydraulic elevator frame 20, and a cell shaping block 32 vertically disposed at the bottom of the shaping assembly mounting rod 31, as shown in fig. 2 (a).
As shown in fig. 1, 3 and 4, the roll core shell assembly 40 includes an adsorption shell assembly 41 for vacuum adsorption and fixation of the large end face of the roll core and then pushing into the aluminum-plastic film shell, and a clamping jaw assembly 42 for clamping and fixing the side edge of the roll core. The suction casing assembly 41 comprises a casing assembly mounting rod 411 connected to the top of the hydraulic lifting frame 20, a vacuum suction cavity 412 connected to the bottom of the casing assembly mounting rod 411 and matched with the large end face of the winding core, and a vacuum extractor (not shown) communicated with the inside of the vacuum suction cavity 412, wherein the bottom of the vacuum suction cavity 412 is provided with a vacuum suction hole (not shown); the clamping jaw assembly 42 comprises a clamping jaw linkage rod 421 arranged on the shell assembly mounting rod 411, and a pneumatic clamping jaw 422 arranged on the clamping jaw linkage rod 421 and used for clamping two longer side edges of the winding core, preferably, the pneumatic clamping jaw 422 is symmetrically arranged on the clamping jaw linkage rod 421, and the number of the pneumatic clamping jaws is one or more than one.
Example 2:
in this embodiment, the shell shaping assembly 30 includes a shaping assembly mounting rod 31 connected to the top of the hydraulic elevator frame 20, a connecting rod 33 vertically disposed at the bottom of the shaping assembly mounting rod 31, and right-angle shaping bars 34 vertically disposed at two ends of the connecting rod 33, and the specific structure is shown in fig. 2 (b); and the core-in-shell assembly 40 of this embodiment is the same as that of embodiment 1.
Example 3:
in this embodiment, the shell shaping assembly 30 includes a shaping assembly mounting rod 31 connected to the top of the hydraulic elevator frame 20, an i-shaped connecting rod 35 vertically disposed at the bottom of the shaping assembly mounting rod 31, and a right-angle shaping block 36 vertically disposed at four ends of the i-shaped connecting rod 35, and the specific structure is as shown in fig. 2 (c); and the core-in-shell assembly 40 of this embodiment is the same as that of embodiment 1.
Example 4:
in this embodiment, the shell reshaping component 30 includes a reshaping component mounting rod 31 connected to the top of the hydraulic lifting frame 20, a first elastic connecting rod 37 vertically arranged at the bottom of the reshaping component mounting rod 31, a second elastic connecting rod 38 vertically arranged at two ends of the first elastic connecting rod 37, and a right-angle reshaping block 36 vertically arranged at two ends of the second elastic connecting rod 38, and the specific structure refers to fig. 2 (d); the first elastic connecting rod 37 and the second elastic connecting rod 38 each include a middle connecting rod 301, end connecting rods 302 respectively disposed at two ends of the middle connecting rod 301, and an elastic expansion member 303 disposed between the middle connecting rod 301 and the end connecting rods 302, as shown in fig. 5. And the core-in-shell assembly 40 of this embodiment is the same as that of embodiment 1.
Example 5:
the case shaping member 30 in the present embodiment is the same as embodiment 1; as shown in fig. 1, 6 and 7, the roll core shell assembly 40 includes an adsorption shell assembly 41 for vacuum adsorption and fixation of the large end face of the roll core and then pushing into the aluminum-plastic film shell, and a clamping jaw assembly 42 for clamping and fixing the side edge of the roll core. The suction casing assembly 41 comprises a casing assembly mounting rod 411 connected to the top of the hydraulic lifting frame 20, a suction cup mounting plate 413 arranged at the bottom of the casing assembly mounting rod 411, and vacuum suction cup groups 414 distributed on the suction cup mounting plate 413 in a matrix manner; the clamping jaw assembly 42 comprises a clamping jaw linkage rod 421 arranged on the shell assembly mounting rod 411, and a pneumatic clamping jaw 422 arranged on the clamping jaw linkage rod 421 and used for clamping two longer side edges of the winding core, preferably, the pneumatic clamping jaw 422 is symmetrically arranged on the clamping jaw linkage rod 421, and the number of the pneumatic clamping jaws is one or more than one.
Example 6:
the case body shaping member 30 in this embodiment is the same as embodiment 2, and the core-in-case member 40 is the same as embodiment 5.
Example 7:
the case body shaping member 30 in this embodiment is the same as embodiment 3, and the core-in-case member 40 is the same as embodiment 5.
Example 8:
the case body shaping member 30 in this embodiment is the same as embodiment 4, and the core-in-case member 40 is the same as embodiment 5.
In the core-in-shell mechanism of the soft package battery in embodiments 1 to 8, the core is grabbed by adopting a fixing mode combining vacuum adsorption and clamping of the clamping jaw, so that the stress applied to the core by the mechanism can be effectively dispersed, and the phenomenon that the grabbing stress is concentrated on the local position of the core, so that the core is deformed to influence the quality of the battery cell is avoided; and before the roll core enters the shell, the plastic-aluminum film shell is shaped, so that the plastic-aluminum film shell is prevented from deforming and affecting the quality of the electric core after entering the shell.
According to the technical scheme of above-mentioned embodiment, the utility model provides a laminate polymer battery rolls up core and goes into shell mechanism, not only dispersible mechanism is executed in the local stress that rolls up the core surface, can go into the shell and carry out the plastic to the plastic-aluminum membrane casing at the core of rolling up moreover to effectual holistic production quality of electric core that has improved.
In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; 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 according to specific situations by those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the present disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.
While the invention has been described in conjunction with the specific embodiments set forth above, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications, and variations that fall within the spirit and scope of the appended claims.
Claims (10)
1. A soft package battery roll core shell entering mechanism is characterized by comprising a rotating machine table, a hydraulic lifting machine frame arranged on the rotating machine table, and a shell shaping assembly and a roll core shell entering assembly which are respectively arranged at two ends of the top of the hydraulic lifting machine frame;
the shell reshaping component is used for reshaping the aluminum-plastic film shell before the shell is placed into the winding core;
roll up core income shell subassembly and push the absorption income shell subassembly in the plastic-aluminum membrane casing after being used for carrying out vacuum adsorption to rolling up the big terminal surface of core and fixing to and be used for pressing from both sides the clamping jaw subassembly of tight fixing to rolling up the core side.
2. The laminate battery roll core shell entering mechanism according to claim 1, wherein the adsorption shell entering assembly comprises a shell entering assembly mounting rod connected to the top of the hydraulic lifting frame, a vacuum adsorption cavity connected to the bottom of the shell entering assembly mounting rod and matched with the large end face of the roll core, and a vacuumizing device communicated with the inside of the vacuum adsorption cavity; and the bottom of the vacuum adsorption cavity is provided with a vacuum adsorption hole.
3. The laminate battery roll core shell-entering mechanism according to claim 1, wherein the suction shell-entering assembly comprises a shell-entering assembly mounting rod connected to the top of the hydraulic lifting frame, a sucker mounting plate arranged at the bottom of the shell-entering assembly mounting rod, and a vacuum sucker group distributed on the sucker mounting plate in a matrix manner.
4. The mechanism of claim 2 or 3, wherein the clamping jaw assembly comprises a clamping jaw linkage rod arranged on the mounting rod of the case entering assembly, and a pneumatic clamping jaw arranged on the clamping jaw linkage rod and used for clamping two longer sides of the winding core.
5. The mechanism of claim 4, wherein the pneumatic clamping jaws are symmetrically arranged on the clamping jaw linkage rod, and the number of the pneumatic clamping jaws is one or more than one.
6. The roll core shell entering mechanism of the soft-package battery as claimed in claim 1, wherein the shell shaping assembly comprises a shaping assembly mounting rod connected to the top of the hydraulic lifting frame, and a battery cell shaping block vertically arranged at the bottom of the shaping assembly mounting rod.
7. The laminate battery roll core shell-entering mechanism according to claim 1, wherein the shell shaping assembly comprises a shaping assembly mounting rod connected to the top of the hydraulic elevator frame, a connecting rod vertically arranged at the bottom of the shaping assembly mounting rod, and right-angle shaping strips vertically arranged at two ends of the connecting rod.
8. The laminate battery roll core shell entering mechanism according to claim 1, wherein the shell body shaping assembly comprises a shaping assembly mounting rod connected to the top of the hydraulic lifting frame, an I-shaped connecting rod vertically arranged at the bottom of the shaping assembly mounting rod, and right-angle shaping blocks vertically arranged at four ends of the I-shaped connecting rod.
9. The roll core shell entering mechanism of the soft package battery as claimed in claim 1, wherein the shell shaping assembly comprises a shaping assembly mounting rod connected to the top of the hydraulic lifting frame, a first elastic connecting rod vertically arranged at the bottom of the shaping assembly mounting rod, a second elastic connecting rod vertically arranged at two ends of the first elastic connecting rod, and a right-angle shaping block vertically arranged at two ends of the second elastic connecting rod.
10. The laminate polymer battery roll core shell entering mechanism according to claim 9, wherein the first elastic connecting rod and the second elastic connecting rod respectively comprise a middle connecting rod, end connecting rods respectively arranged at two ends of the middle connecting rod, and elastic expansion pieces arranged between the middle connecting rod and the end connecting rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022534127.5U CN213716941U (en) | 2020-11-05 | 2020-11-05 | Soft-package battery roll core shell-entering mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022534127.5U CN213716941U (en) | 2020-11-05 | 2020-11-05 | Soft-package battery roll core shell-entering mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213716941U true CN213716941U (en) | 2021-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022534127.5U Expired - Fee Related CN213716941U (en) | 2020-11-05 | 2020-11-05 | Soft-package battery roll core shell-entering mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213716941U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113393463A (en) * | 2021-08-18 | 2021-09-14 | 苏州高视半导体技术有限公司 | Soft package battery roll core detection and shell entering method |
| CN115692818A (en) * | 2022-11-04 | 2023-02-03 | 天津大学 | Aluminum-plastic film packaging device for soft package battery |
-
2020
- 2020-11-05 CN CN202022534127.5U patent/CN213716941U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113393463A (en) * | 2021-08-18 | 2021-09-14 | 苏州高视半导体技术有限公司 | Soft package battery roll core detection and shell entering method |
| CN115692818A (en) * | 2022-11-04 | 2023-02-03 | 天津大学 | Aluminum-plastic film packaging device for soft package battery |
| CN115692818B (en) * | 2022-11-04 | 2024-03-26 | 天津大学 | Plastic-aluminum membrane packaging hardware of soft packet of battery |
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Granted publication date: 20210716 |