CN110364765B - Automatic closing device of lithium cell module packing - Google Patents

Automatic closing device of lithium cell module packing Download PDF

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Publication number
CN110364765B
CN110364765B CN201910454077.9A CN201910454077A CN110364765B CN 110364765 B CN110364765 B CN 110364765B CN 201910454077 A CN201910454077 A CN 201910454077A CN 110364765 B CN110364765 B CN 110364765B
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China
Prior art keywords
positioning
plate
positioning strip
strip
pressing
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CN201910454077.9A
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CN110364765A (en
Inventor
唐红跃
李晓燕
王超
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Hefei Gotion High Tech Power Energy Co Ltd
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Hefei Guoxuan High Tech Power Energy Co Ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/058Construction or manufacture
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50Manufacturing or production processes characterised by the final manufactured product

Abstract

The invention discloses an automatic pressing device for packaging a lithium battery module, which comprises: packing platform, first location strip, second location strip, locating plate and hold-down mechanism, wherein: the first positioning strip and the second positioning strip are both arranged on the packing table, and the first positioning strip is positioned on one side of the second positioning strip with a space reserved between the first positioning strip and the second positioning strip; the positioning plate and the pressing mechanism are oppositely arranged at two ends of the first positioning strip and the second positioning strip, a threading groove for the packaging belt to pass through is formed in the surface, close to one side of the pressing mechanism, of the positioning plate, the pressing mechanism comprises a pressing plate and a driving assembly, the pressing plate is oppositely arranged with the positioning plate, the driving assembly is used for driving the pressing plate to reciprocate towards the positioning plate, and a threading groove for the packaging belt to pass through is formed in one side, close to the positioning plate, of the pressing plate. The invention realizes the semi-automation of the module pressing action, has high speed, high efficiency, less output, good compatibility and high safety, is particularly suitable for being applied to laboratories or occasions of small-batch production, and saves the production and manufacturing cost of enterprises.

Description

Automatic closing device of lithium cell module packing
Technical Field
The invention relates to the technical field of battery manufacturing, in particular to an automatic pressing device for packaging a lithium battery module.
Background
In square lithium ion battery PACK manufacturing process, module shaping process is indispensable, and this process at first needs to assemble in groups a plurality of battery cells, then adds the curb plate at both ends to tie up fixedly and cover the upper cover plate, get up the curb plate of module and laser welding for the upper cover plate at last. Because laser welding has higher requirement on precision, the gap of the joint between the side plate and the upper cover plate is required to be controlled within a very small range, the characteristic is directly reflected on the length of the bundled modules, and the laser welding effect can be influenced by overlong or overlong length of the bundled modules.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides an automatic pressing device for packaging a lithium battery module.
The invention provides an automatic pressing device for packaging a lithium battery module, which comprises: packing platform, first location strip, second location strip, locating plate and hold-down mechanism, wherein:
the first positioning strip and the second positioning strip are both arranged on the packing table, and the first positioning strip is positioned on one side of the second positioning strip with a space reserved between the first positioning strip and the second positioning strip;
the positioning plate and the pressing mechanism are arranged at two ends of the first positioning strip and the second positioning strip relatively, the positioning plate is fixedly mounted on the packaging table, a threading groove for the packaging belt to pass through is formed in the surface, close to one side of the pressing mechanism, of the positioning plate, the pressing mechanism comprises a pressing plate and a driving assembly, the pressing plate and the driving assembly are arranged relatively to the positioning plate, the driving assembly is used for driving the pressing plate to reciprocate towards the positioning plate, a threading groove for the packaging belt to pass through is formed in one side, close to the positioning plate, of the pressing plate, and the driving assembly is fixedly mounted on the packaging table.
Preferably, the side of the pressure plate close to the positioning plate and located on the side of the first positioning strip far away from the second positioning strip and/or the side of the second positioning strip far away from the first positioning strip is provided with a first buffer mechanism for absorbing the motion impact force of the pressure plate.
Preferably, one side of the first positioning strip far away from the second positioning strip and/or one side of the second positioning strip far away from the first positioning strip are/is provided with a sliding mechanism capable of moving along the length directions of the first positioning strip and the second positioning strip, and the first buffer mechanism is fixedly mounted on the sliding mechanism.
Preferably, the sliding mechanism comprises a guide shoe and a slide shoe, wherein: the guide seat is fixedly arranged on the packing table, a sliding groove extending along the length direction of the first positioning strip and the second positioning strip is arranged on the guide seat, and positioning holes are arranged in the sliding groove at intervals along the extending direction of the sliding groove; the sliding seat is positioned above the guide seat and is assembled with the sliding chute in a sliding manner, a vertically arranged pin hole is formed in the sliding seat, a positioning pin is inserted into the pin hole, and the sliding seat is inserted into the positioning hole through the positioning pin to realize stopping; the first buffer mechanism is fixedly arranged on the sliding seat.
Preferably, the top of locating pin is equipped with the stopper rather than fixed, the stopper is located the top of slide and is connected with the slide through extension spring.
Preferably, the first damping mechanism is a hydraulic damper.
Preferably, one side of the pressure plate, which is far away from the positioning plate, is provided with a second buffer mechanism for absorbing the movement impact force of the pressure plate, and the second buffer mechanism is fixedly installed on the packing table through a support.
Preferably, the second damping mechanism is a hydraulic damper.
Preferably, the side edges of the first positioning strip and the second positioning strip, which are close to each other, are respectively provided with a chamfered edge.
Preferably, the distance between the first positioning strip and the second positioning strip is adjustable.
Preferably, the driving assembly comprises an air cylinder and an air supply unit connected with the air cylinder and used for providing an air source for the air cylinder, the air cylinder is located on one side, away from the positioning plate, of the pressing plate, and the ejection end of a piston rod of the air cylinder is connected with the pressing plate.
Preferably, the air supply unit comprises an air conveying gas path for connecting an air source, the air inlet and the air outlet of the air cylinder are both connected with the air conveying gas path, the air inlet and the air outlet of the air cylinder are both provided with a throttle valve, and the air conveying gas path is internally provided with a filtering pressure reducing valve and a two-position three-way manual control valve for controlling the on-off of the filtering pressure reducing valve.
Preferably, two-position three-way manual control valves are arranged, one of the two-position three-way manual control valves is arranged at the air inlet of the air cylinder and used for controlling the on-off of the air source at the air inlet, and the other one of the two-position three-way manual control valves is arranged at the air outlet of the air cylinder and used for controlling the on-off of the air source at the air outlet.
Preferably, the packing platform includes deck plate and the support frame that is used for supporting the deck plate, the deck plate is the insulating board, the height-adjustable of support frame.
Preferably, the support frame includes the backup pad and is located the backup pad below and the supporting leg of being connected with the backup pad, be equipped with the wiring hole in the backup pad, deck plate fixed mounting is in the backup pad, and the bottom of supporting leg is equipped with the lower margin, and be equipped with between lower margin and the supporting leg with the two threaded connection's adjusting bolt.
According to the invention, the first positioning strip, the second positioning strip and the positioning plate are used for limiting three surfaces of the battery module, the driving assembly is matched with the pressing plate to apply pressure to the battery module so as to press the length of the battery module into technological specifications, and finally the threading grooves on the positioning plate and the pressing plate are used for enabling the packing belt to penetrate through the positioning plate and the battery module and between the pressing plate and the battery module so as to wind on the battery module, so that the packing work of the battery module can be completed. The device has realized that the module compresses tightly the semi-automatization of action, and is fast, efficient, and it is few to exert oneself, and is compatible good, and the security is high, is particularly suitable for using in laboratory or small batch production's occasion, has practiced thrift the manufacturing cost of enterprise.
Drawings
Fig. 1 is a schematic structural diagram of an automatic pressing device for packing a lithium battery module according to the present invention;
fig. 2 is a schematic structural diagram of the positioning plate in the automatic pressing device for packaging the lithium battery module provided by the invention;
fig. 3 is a schematic structural diagram of the pressing mechanism of the automatic pressing device for packaging lithium battery modules according to the present invention;
fig. 4 is a schematic structural diagram of the sliding mechanism in the automatic pressing device for packing lithium battery modules according to the present invention;
fig. 5 is a schematic structural diagram of the packing table in the automatic pressing device for packing the lithium battery module according to the present invention;
fig. 6 is a schematic structural diagram of the air supply unit in the automatic pressing device for packaging a lithium battery module according to the present invention;
fig. 7 is a schematic view of a working state of the automatic pressing device for packing the lithium battery module according to the present invention.
Detailed Description
The technical solution of the present invention will be described in detail below with reference to specific examples.
As shown in fig. 1-7, fig. 1 is a schematic structural diagram of an automatic pressing device for packing a lithium battery module according to the present invention; fig. 2 is a schematic structural diagram of the positioning plate in the automatic pressing device for packaging the lithium battery module provided by the invention; fig. 3 is a schematic structural diagram of the pressing mechanism of the automatic pressing device for packaging lithium battery modules according to the present invention; fig. 4 is a schematic structural diagram of the sliding mechanism in the automatic pressing device for packing lithium battery modules according to the present invention; fig. 5 is a schematic structural diagram of the packing table in the automatic pressing device for packing the lithium battery module according to the present invention; fig. 6 is a schematic structural diagram of the air supply unit in the automatic pressing device for packaging a lithium battery module according to the present invention; fig. 7 is a schematic view of a working state of the automatic pressing device for packing the lithium battery module according to the present invention.
Referring to fig. 1-7, the invention provides an automatic pressing device for packing a lithium battery module, which comprises: packing platform 1, first location strip 2, second location strip 3, locating plate 4 and hold-down mechanism 5, wherein:
first location strip 2 and second location strip 3 all install on packing platform 1, and first location strip 2 is located one side of second location strip 3 and leaves the interval between the two in advance. Locating plate 4 and hold-down mechanism 5 are arranged at the both ends of first locating bar 2 and second locating bar 3 relatively, and 4 fixed mounting of locating plate on packing platform 1, and be equipped with the threading recess that supplies the packing area to pass on the face that locating plate 4 is close to hold-down mechanism 5 one side, and hold-down mechanism 5 includes the clamp plate 501 of arranging with 4 fixed mounting of locating plate and is used for driving clamp plate 501 to 4 direction reciprocating motion's of locating plate drive assembly 502, one side that clamp plate 501 is close to locating plate 4 is equipped with the threading recess that supplies the packing area to pass, drive assembly 502 includes the cylinder and is connected with the cylinder in order to be used for providing the air feed unit of air supply to the cylinder, the cylinder is located one side that clamp plate 501 kept away from locating plate 4 and fixed mounting on packing platform 1, and cylinder piston rod's top is connected with clamp plate 501.
The invention works as follows: putting the battery module to be packaged among the first positioning strip 2, the second positioning strip 3 and the positioning plate 4, enabling the side edge of one end of the battery module to be abutted against the positioning plate 4, and starting the air cylinder to push the pressing plate 501 to move towards the positioning plate 4 so as to enable the pressing plate 501 to be in contact with the battery module and to be continuously pressed; when the battery module is compressed to a preset process length, the threading grooves on the positioning plate 4 and the pressing plate 501 are utilized to enable the packing belt to pass through the positioning plate and the battery module and between the pressing plate and the battery module so as to wind on the battery module, and then the packing work of the battery module can be completed; finally, an upper cover plate is added to the upper end of the battery module, and the air cylinder is reset to enable the pressing plate 501 to release the limitation on the battery module.
According to the invention, the first positioning strip 2, the second positioning strip 3 and the positioning plate 4 are used for limiting three surfaces of the battery module, the driving assembly 502 is matched with the pressing plate 501 to press the battery module to press the length of the battery module to the technical specification, and finally the threading grooves on the positioning plate 4 and the pressing plate 501 are used for enabling the packing belt to penetrate through the positioning plate and the battery module and between the pressing plate and the battery module to be wound on the battery module so as to complete the packing work of the battery module. The device has realized that the module compresses tightly the semi-automatization of action, and is fast, efficient, and it is few to exert oneself, and is compatible good, and the security is high, is particularly suitable for using in laboratory or small batch production's occasion, has practiced thrift the manufacturing cost of enterprise.
In addition, in this embodiment, a first buffering mechanism 6 is disposed on one side of the pressing plate 501 close to the positioning plate 4 and on one side of the first positioning bar 2 away from the second positioning bar 3 and/or one side of the second positioning bar 3 away from the first positioning bar 2, and the first buffering mechanism 6 is a hydraulic buffer. In operation, the first buffer mechanism 6 is used to absorb the impact force generated when the pressing plate 501 moves forward, so that the battery module can be slowly pressed when the pressing plate 501 contacts with the battery module, and the impact force of the pressing plate 501 on the end face of the battery module is reduced. In order to meet the packing requirements of battery modules with different lengths, in this embodiment, a sliding mechanism 7 capable of moving along the length directions of the first positioning strip 2 and the second positioning strip 3 is disposed on one side of the first positioning strip 2 away from the second positioning strip 3 and/or one side of the second positioning strip 3 away from the first positioning strip 2, and the first buffering mechanism 6 is fixedly mounted on the sliding mechanism 7, so that the distance between the first buffering mechanism 6 and the pressing plate 501 can be freely adjusted according to the length requirements of the battery modules.
In this embodiment, the sliding mechanism 7 includes a guide seat 701 and a sliding seat 702, in which: the guide seat 701 is fixedly arranged on the packing table 1, a sliding groove extending along the length direction of the first positioning strip 2 and the second positioning strip 3 is arranged on the guide seat 701, and positioning holes are arranged in the sliding groove at intervals along the extending direction of the sliding groove; the sliding seat 702 is positioned above the guide seat 701 and is assembled with the sliding groove in a sliding mode, a vertically arranged pin hole is formed in the sliding seat 702, a positioning pin 8 is inserted into the pin hole, and the sliding seat 702 is inserted into the positioning hole through the positioning pin 8 to achieve stopping; the first buffer mechanism 6 is fixedly mounted on the slider 702. In operation, the positioning pin 8 is matched with different positioning holes to realize the position adjustment of the first buffer mechanism 6. In addition, in order to facilitate the insertion and extraction of the positioning pin 8 and prevent the positioning pin 8 from being lost, a limiting block fixed with the positioning pin 8 is arranged at the top of the positioning pin 8, and a tension spring 9 for connecting the limiting block and the sliding seat 702 is arranged between the limiting block and the sliding seat.
In this embodiment, a second buffer mechanism 10 for absorbing the impact force of the movement of the pressing plate 501 is disposed on one side of the pressing plate 501 away from the positioning plate 4, the second buffer mechanism 10 is fixedly mounted on the packaging table 1 through a bracket, and the second buffer mechanism 10 is a hydraulic buffer. So that the impact force when the platen 501 retreats is absorbed by the second buffer mechanism 10.
In this embodiment, the side edges of the first positioning strip 2 and the second positioning strip 3 close to each other are respectively provided with a chamfered edge.
In this embodiment, the interval between first location strip 2 and the second location strip 3 is adjustable to satisfy the packing requirement of different width battery module.
In this embodiment, the air supply unit includes the gas transmission gas circuit that is used for connecting the air supply, the air inlet and the gas outlet of cylinder all are connected with the gas transmission gas circuit, and the air inlet of cylinder and its gas outlet department all install choke valve 12, are equipped with in the gas transmission gas circuit and filter relief pressure valve 11 and are used for controlling its two three-way manual valves 13 of break-make. The throttle valve 12 can adjust the speed of the air cylinder compressing or retracting action, and the filter pressure reducing valve 11 is arranged to ensure the quality of compressed air and adjust the air pressure. In this embodiment, two-position three-way manual control valves 13 are provided, one of the two-position three-way manual control valves 13 is installed at the air inlet of the air cylinder to control the on-off of the air source at the air inlet, and the other one of the two-position three-way manual control valves 13 is installed at the air outlet of the air cylinder to control the on-off of the air source at the air outlet. The structure realizes a bidirectional starting mode, namely the two-position three-way manual control valves 13 are operated according to a certain sequence to enable the cylinder to act, and the independent screwing of one two-position three-way manual control valve 13 is an ineffective operation, so that the continuity of pressing force and the safety of an operation process are guaranteed.
In this embodiment, the baling table 1 includes a table top 101 and a support frame 102 for supporting the table top 101, where the table top 101 is an insulating plate; the support frame 102 comprises a support plate and support legs located below the support plate and connected with the support plate, wherein wiring holes are formed in the support plate to facilitate wiring. The deck plate 101 is fixedly installed on the supporting plate, the bottom of the supporting leg is provided with a foot margin, and an adjusting bolt 14 which is in threaded connection with the foot margin and the supporting leg is arranged between the foot margin and the supporting leg, so that the height of the supporting frame 102 can be adjusted by rotating the adjusting bolt 14.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (8)

1. The utility model provides an automatic closing device of lithium cell module packing which characterized in that includes: packing platform (1), first location strip (2), second location strip (3), locating plate (4) and hold-down mechanism (5), wherein:
the first positioning strip (2) and the second positioning strip (3) are both arranged on the packing table (1), and the first positioning strip (2) is positioned on one side of the second positioning strip (3) with a distance reserved between the first positioning strip and the second positioning strip;
the positioning plate (4) and the pressing mechanism (5) are oppositely arranged at two ends of the first positioning strip (2) and the second positioning strip (3), the positioning plate (4) is fixedly arranged on the packing table (1), a threading groove for a packing belt to pass through is formed in the plate surface of one side, close to the pressing mechanism (5), of the positioning plate (4), the pressing mechanism (5) comprises a pressing plate (501) oppositely arranged with the positioning plate (4) and a driving assembly (502) for driving the pressing plate (501) to reciprocate towards the positioning plate (4), a threading groove for the packing belt to pass through is formed in one side, close to the positioning plate (4), of the pressing plate (501), and the driving assembly (502) is fixedly arranged on the packing table (1);
a first buffer mechanism (6) for absorbing the motion impact force of the pressing plate (501) is arranged on one side of the pressing plate (501) close to the positioning plate (4) and on one side of the first positioning strip (2) far away from the second positioning strip (3) and/or one side of the second positioning strip (3) far away from the first positioning strip (2);
one side of the first positioning strip (2) far away from the second positioning strip (3) and/or one side of the second positioning strip (3) far away from the first positioning strip (2) are/is provided with a sliding mechanism (7) capable of moving along the length direction of the first positioning strip (2) and the second positioning strip (3), and the first buffer mechanism (6) is fixedly arranged on the sliding mechanism (7); the sliding mechanism (7) comprises a guide seat (701) and a sliding seat (702), wherein: the guide seat (701) is fixedly arranged on the packing table (1), a sliding groove extending along the length direction of the first positioning strip (2) and the second positioning strip (3) is arranged on the guide seat (701), and positioning holes are arranged in the sliding groove at intervals along the extending direction of the sliding groove; the sliding seat (702) is positioned above the guide seat (701) and is assembled with the sliding groove in a sliding mode, pin holes which are vertically arranged are formed in the sliding seat (702), positioning pins (8) are inserted into the pin holes, and the sliding seat (702) is inserted into the positioning holes through the positioning pins (8) to achieve stopping; the first buffer mechanism (6) is fixedly arranged on the sliding seat (702); the top of locating pin (8) is equipped with the stopper rather than fixed, the stopper is located the top of slide (702) and is connected with slide (702) through extension spring (9).
2. The automatic pressing device for packing the lithium battery module as claimed in claim 1, wherein the first buffer mechanism (6) is a hydraulic buffer.
3. The automatic pressing device for packaging the lithium battery module as claimed in claim 1, wherein a second buffer mechanism (10) for absorbing the movement impact force of the pressing plate (501) is arranged on one side of the pressing plate (501) away from the positioning plate (4), and the second buffer mechanism (10) is fixedly arranged on the packaging table (1) through a bracket; the second damper mechanism (10) is a hydraulic damper.
4. The automatic pressing device for packaging the lithium battery module as claimed in claim 1, wherein the side edges of the first positioning strip (2) and the second positioning strip (3) close to each other are respectively provided with a chamfered edge.
5. The automatic pressing device for packaging lithium battery modules as claimed in claim 1, wherein the distance between the first positioning strip (2) and the second positioning strip (3) is adjustable.
6. The automatic pressing device for packaging of the lithium battery module as claimed in claim 1, wherein the driving assembly (502) comprises a cylinder and a gas supply unit connected with the cylinder for providing a gas source for the cylinder, the cylinder is located on one side of the pressing plate (501) far away from the positioning plate (4), and the ejection end of a piston rod of the cylinder is connected with the pressing plate (501).
7. The automatic compacting device for lithium battery module packaging according to claim 6, wherein the air supply unit comprises an air transmission gas path for connecting an air source, the air inlet and the air outlet of the air cylinder are both connected with the air transmission gas path, the air inlet and the air outlet of the air cylinder are both provided with a throttle valve (12), and the air transmission gas path is provided with a filtering and pressure reducing valve (11) and a two-position three-way manual control valve (13) for controlling the on-off of the filtering and pressure reducing valve; two-position three-way manual control valves (13) are arranged, one two-position three-way manual control valve (13) is arranged at the air inlet of the air cylinder and used for controlling the on-off of an air source at the air inlet, and the other two-position three-way manual control valve (13) is arranged at the air outlet of the air cylinder and used for controlling the on-off of the air source at the air outlet.
8. The automatic compacting device of lithium battery module packing of any of claims 1-7, characterized in that, packing platform (1) includes a platform panel (101) and a support frame (102) for supporting platform panel (101), the platform panel (101) is an insulating board, the height of support frame (102) is adjustable; the supporting frame (102) comprises a supporting plate and supporting legs, the supporting legs are located below the supporting plate and connected with the supporting plate, wiring holes are formed in the supporting plate, the table board (101) is fixedly installed on the supporting plate, feet are arranged at the bottoms of the supporting legs, and adjusting bolts (14) which are in threaded connection with the feet and the supporting legs are arranged between the feet and the supporting legs.
CN201910454077.9A 2019-05-29 2019-05-29 Automatic closing device of lithium cell module packing Active CN110364765B (en)

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CN110364765B true CN110364765B (en) 2022-08-09

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CN207624841U (en) * 2017-12-06 2018-07-17 天津天缘科技有限公司 A kind of novel battery group pressing device
CN208208889U (en) * 2018-05-10 2018-12-07 洛阳力诺模具有限公司 A kind of lithium battery extrusion equipment
CN208368564U (en) * 2018-05-22 2019-01-11 大族激光科技产业集团股份有限公司 A kind of battery modules positioning fixture
CN208336394U (en) * 2018-05-31 2019-01-04 大族激光科技产业集团股份有限公司 A kind of battery modules shaping device

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