CN112821007A - Unformed battery, preparation method of battery and formation equipment - Google Patents
Unformed battery, preparation method of battery and formation equipment Download PDFInfo
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- CN112821007A CN112821007A CN201911046765.8A CN201911046765A CN112821007A CN 112821007 A CN112821007 A CN 112821007A CN 201911046765 A CN201911046765 A CN 201911046765A CN 112821007 A CN112821007 A CN 112821007A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/446—Initial charging measures
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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
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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
- 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
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- Sealing Battery Cases Or Jackets (AREA)
Abstract
The embodiment of the application provides an unformed battery, a preparation method of the battery and formation equipment, wherein the unformed battery comprises: the battery comprises an air bag and a battery body connected with the air bag, wherein the air bag is provided with a reinforcing rib. Because the air bag has the strengthening rib, has strengthened the atress intensity of air bag, so in the in-process of carrying out the formation to the battery, strengthened the compressive capacity to the pressure of produced gas, reduced the deformation degree of air bag promptly, and can make the deformation direction of air bag more regular, and then reduced the possibility that produces fold or collapse.
Description
Technical Field
The application relates to the technical field of batteries, in particular to an unformed battery, a preparation method of the battery and formation equipment.
Background
With the rapid development of new energy technology, the battery technology, which is an important new energy technology, has also been rapidly developed and widely applied in daily life.
In the battery technology, in order to improve the safety and flexibility of battery application, batteries have appeared, and compared with metal-shell batteries, the batteries only can be blown and cracked under the condition of potential safety hazards, and are not easy to explode, and the batteries also have the advantages of light weight, large capacity, small internal resistance, flexible design and the like.
In the production process of the battery, the battery main body is required to be placed in a packaging shell, then electrolyte is injected into the packaging shell and sealed, and then the formation process is carried out.
The formation of the battery is to charge the battery for the first time, but the battery is not charged to the highest voltage used, and the charging current is very small. The purpose of formation is to form a stable SEI (Solid Electrolyte Interface) film on the electrode surface, which is equivalent to a process of "activating" the battery. As shown in fig. 1, the battery may be held in a jig during the formation process, and it may also be necessary to transfer the battery in various jigs, for example, to a cold press jig or a capacity jig.
In the formation process, a certain amount of gas is generated, and due to the insufficient strength of the gas bag, under the action of the stress of the generated gas, the gas bag may expand and further deform, as shown in fig. 1, the gas bag is wrinkled or collapsed, and further, when the gas bag is transferred to a cold-pressing fixture or a capacity fixture, the gas bag is misaligned, as shown in fig. 2, and the battery body is extruded due to the misaligned positioning, so that a safety event of smoking or burning may occur.
Disclosure of Invention
An object of the embodiments of the present application is to provide an unformed battery, a method for manufacturing the battery, and a forming apparatus, so as to solve the problem that an air bag is wrinkled or collapsed due to inflation in a forming process of the battery in the related art. The specific technical scheme is as follows:
the embodiment of the application provides a battery of not becoming, includes: packing casing and electric core, the packing casing includes the main part that is used for holding the electric core and connects the air pocket 5 of main part, wherein:
the air bag 5 is provided with a reinforcing rib 6.
Further, the reinforcing ribs 6 are arranged at the sealed edges of the air bag 5.
Furthermore, the cross section of the reinforcing rib 6 is square, semicircular or V-shaped.
Further, the length of the reinforcing ribs 6 is the same as that of the sealed edges of the air bag 5; or
The length of the reinforcing ribs 6 is less than that of the sealed edges of the air bag 5.
Further, the distance from the reinforcing ribs 6 to the edge sealing of the air bag 5 ranges from 3 mm to 30 mm.
Further, the width of the reinforcing rib 6 ranges from 3 to 30 mm, and the depth of the reinforcing rib 6 ranges from 1 to 6 mm.
Further, the air pocket 5 is provided with a punching pit 7.
The embodiment of the application also provides a preparation method of the battery, which comprises the following steps:
placing the battery core into the main body part of the packaging shell, and injecting electrolyte;
a main body part encapsulating the package case;
stamping the sealed edges of the air bag of the packaging shell to form reinforcing ribs to obtain an unformed battery;
and carrying out formation treatment on the unformed battery.
Further, after obtaining the formed battery, the method further includes:
cutting to remove the air bag, and packaging the cut packaging shell.
The embodiment of the present application further provides a formation device, including: first feed mechanism 8, stamping device 9, hot pressing become anchor clamps 13 and unloading mechanism 15, wherein:
the feeding mechanism 8 is used for placing a cartridge clip provided with unformed batteries 104, and the batteries 104 in the cartridge clip are moved to the stamping device 9 by a manipulator;
the pressing device 9 is used for pressing the reinforcing ribs 6 on the air bags 5 of the batteries 104, and the batteries 104 on which the reinforcing ribs 6 are pressed are transferred to the hot-pressing forming fixture 13 by a manipulator;
the thermal compression molding jig 13 clamps the battery 104, and the battery 104 is subjected to a chemical conversion process while being clamped by the thermal compression molding jig 13;
after the formation process is completed, the battery 104 is transferred to the blanking mechanism 15.
Further, the formation equipment further comprises: second feed mechanism 11, overhead traveling crane 12 and cold pressing jig 14, wherein:
the battery 104 with the reinforcing ribs 6 punched out is firstly transferred to a second feeding mechanism 11 by a manipulator;
when the number of the batteries 104 loaded on the second loading mechanism 11 reaches the number required by the thermal compression molding jig 13, the overhead traveling crane 12 transfers the batteries 104 loaded on the second loading mechanism 11 to the thermal compression molding jig 13;
after the formation process is completed, the crown block 12 transfers the formed battery 104 to the cold pressing jig 14;
the cold-pressing clamp 14 clamps the battery 104 for cold-pressing treatment;
after the cold pressing process is completed, the crown block 12 transfers the battery 104 that has been cold pressed to the blanking mechanism 15.
Further, the formation equipment further comprises: a battery overturning code scanning platform 10;
the battery 104 with the punched reinforcing ribs is transferred to the battery turnover code scanning platform 10 by a manipulator, turned from a flat posture to a vertical posture after being scanned, and then transferred to the second feeding mechanism 11 by the manipulator.
Further, the stamping device 9 includes: positioning mechanism 1, punching press mechanism 2 and mount 3, wherein:
the positioning mechanism 1 is provided with a positioning platform for placing an unformed battery 104, and the sealing edge 105 of the air bag 5 of the battery 104 extends out of the positioning platform;
the stamping mechanism 2 is mounted on the fixed frame 3 and comprises a downward pressing power device 201, a jacking power device 207, an upper die 203 and a lower die 204;
the pressing power device 201 is used for driving the upper die 203 to move up and down, and the jacking power device 207 is used for driving the lower die 204 to move up and down;
the upper die 203 is provided with an upper punching boss 210, the lower die 204 is provided with a lower punching groove 211, and a die working area is formed between the upper die 203 and the lower die 204;
the upper die 203 and the lower die 204 are respectively driven by the lower pressing power device 201 and the jacking power device 207 to realize die assembly, so that the sealing edge 105 of the air bag 5 entering the working area of the die is stamped with the reinforcing rib 6 through the upper stamping convex head 210 and the lower stamping groove 211.
Further, the stamping mechanism 2 further includes: a forward power device 208 for driving the punching mechanism 2 to move relative to the positioning mechanism 1 so as to enable the sealing edge 105 of the air bag 5 to enter the die working area; or
The positioning mechanism 1 further includes: and the advancing power device is used for driving the positioning mechanism 1 to move relative to the stamping mechanism 2 so as to enable the sealing edge 105 of the air bag to enter the working area of the die.
Further, the stamping mechanism 2 further includes: a linear slide 206;
the upper mold 203 and the lower mold 204 move up and down along the linear slide 206.
Further, the cross-section of the upper punch protrusion 210 has an R-angle shape, and the cross-section of the lower punch recess 211 has an R-angle shape.
Further, the stamping mechanism 2 further includes: the air source joint 204A is connected with the lower die 203, and the air source joint 204A is used for connecting an external compressed air source;
the lower stamping groove 211 of the lower die 203 is provided with a flow equalizing air passage 204B and a blowing hole 204C, so that air from an external compressed air source passes through the flow equalizing air passage 204B and is discharged from the blowing hole 204C.
Further, the air blowing hole 204C is located at the lowest position of the lower punching groove 211.
Further, the stamping mechanism 2 further includes: an upper die fixing base 212;
a piston rod 213 of the downward-pressing power device 201 is connected with an upper die fixing seat 212, and the upper die fixing seat 212 is connected with an upper die 203;
the piston rod 214 of the jacking power device 207 is connected with the lower die 204.
Further, the stamping mechanism 2 further includes: an air bag pressing mechanism 205;
the air bag pressing mechanism 205 includes: a hold down spring 205A, a press block 205B, and a support block 205C, wherein:
the pressing spring 205A is located above the pressing block 205B and connected to the pressing block 205B, the pressing spring 205A and the pressing block 205B are both mounted on the upper die fixing seat 212, the lower surface of the pressing block 205B is lower than the upper punching boss 210, and the supporting block 205C is mounted on the lower die 204;
the pressing block 205B and the supporting block 205C are configured to press the sealing edge 105 of the air bag 5 when the upper mold 203 and the lower mold 204 are closed.
Further, the downward-pressing power device 201 is a downward-pressing cylinder 201, and the jacking power device 207 is a jacking cylinder 207.
Further, the forward power device 208 is a forward cylinder 208.
Further, the positioning mechanism 1 includes: a side push block 101, an upper push block 102 and a stop block 103;
the stop blocks 103 are arranged on the side edges of the positioning platform and are higher than the surface of the positioning platform;
the side push block 101 and the push-up block 102 are used for moving the battery body 4 of the battery 104 to a specified position after the battery 104 is placed on the positioning platform, and the stopper 103 is used for blocking the battery body 4 of the battery 104 from extending out of the positioning platform.
Further, the positioning platform of the positioning mechanism 1 has a battery groove matching with the size of the battery body 4 of the battery 104, for placing the battery body 4 of the battery 104.
The embodiment of the application has the following beneficial effects:
the embodiment of the application provides a battery of not becoming, includes: the battery comprises an air bag and a battery main body connected with the air bag, wherein the air bag is provided with a reinforcing rib. Because the air bag has the strengthening rib, has strengthened the atress intensity of air bag, so in the in-process of carrying out the formation to the battery, strengthened the compressive capacity to the pressure of produced gas, reduced the deformation degree of air bag promptly, and can make the deformation direction of air bag more regular, and then reduced the possibility that produces fold or collapse.
The embodiment of the application provides a formation equipment, and the formation equipment comprises: first feed mechanism, stamping device, hot pressing become anchor clamps and unloading mechanism, wherein: the first feeding mechanism is used for placing a cartridge clip provided with unformed batteries, and the batteries in the cartridge clip are moved to the stamping device by a manipulator; the punching device is used for punching reinforcing ribs on the sealed edges of the air bags of the batteries, and the batteries with the punched reinforcing ribs are moved to the hot-pressing forming fixture by the manipulator; a thermal compression forming jig for clamping the battery, the battery being subjected to a formation process while being held by the thermal compression forming jig; after the formation treatment is completed, the battery is transferred to a blanking mechanism. In the process of forming the battery by using the forming equipment, the air bag with the reinforcing ribs stamped by using the stamping device is strengthened in stress strength, so that in the process of forming the battery, the pressure resistance to the pressure of generated gas is enhanced, namely the deformation degree of the air bag is reduced, the deformation direction of the air bag is more regular, and the possibility of generating wrinkles or collapse is further reduced.
Of course, not all advantages described above need to be achieved at the same time in the practice of any one product or method of the present application.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view showing a wrinkle or collapse of an air pocket after formation of a battery according to the related art;
fig. 2 is a schematic view showing that the battery formed in the related art burns due to compression during movement;
fig. 3 is a schematic structural diagram of an unformed battery provided in an embodiment of the present application;
fig. 4 is a schematic diagram of a battery with reinforcing ribs provided in an embodiment of the present application after formation;
FIG. 5 is a schematic comparison of the number of alarms occurring during pre-retrofit, post-retrofit and post-optimized use of the airbag for a battery, respectively;
FIG. 6-1 is a schematic process diagram of a method for manufacturing a battery according to an embodiment of the present disclosure;
fig. 6-2 is a second schematic process diagram of a method for manufacturing a battery according to an embodiment of the present disclosure;
fig. 7-1 is a schematic structural diagram of a formation device provided in an embodiment of the present application;
7-2 is a schematic structural diagram of a stamping device in the formation equipment provided by the embodiment of the application;
7-3 are schematic diagrams of processes for forming a battery by using a forming device according to an embodiment of the present application;
fig. 8-1 is a schematic structural diagram of a punching mechanism in a punching device provided in an embodiment of the present application;
fig. 8-2 is a schematic structural diagram of a positioning mechanism in a punching device according to an embodiment of the present disclosure;
FIG. 9 is an enlarged view of a portion of an upper punch nose and a lower punch recess of a punch mechanism in a punch apparatus according to an embodiment of the present application;
fig. 10 is a schematic structural view of a lower die of a punching mechanism of a punching device according to an embodiment of the present application;
fig. 11 is a side view of an air bag pressing mechanism of a punching device provided in an embodiment of the present application;
fig. 12 is a top view of a positioning mechanism of a stamping device provided in an embodiment of the present application;
fig. 13 is a partially enlarged view of a positioning mechanism of a punching device according to an embodiment of the present application;
fig. 14 is a schematic structural diagram of a stopper of a positioning mechanism of a punching device according to an embodiment of the present application;
fig. 15 is a schematic view of a method for stamping a reinforcing bead on an air bag using a stamping device according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In order to reduce the possibility of wrinkles or collapse of air pockets during the formation of the battery, an embodiment of the present application provides an unformed battery, as shown in fig. 3, including a package case and a battery core, where the package case includes: an air bag 5 and a battery body 4 connected with the air bag 5 and containing a battery core, wherein:
the air bag 5 is provided with a reinforcement rib 6.
Because the air bag has the strengthening rib, has strengthened the atress intensity of air bag, so in the in-process of carrying out the formation to the battery, strengthened the compressive capacity to the pressure of produced gas, reduced the deformation degree of air bag promptly, and can make the deformation direction of air bag more regular, and then reduced the possibility that produces fold or collapse.
In one embodiment of the present application, a reinforcement rib 6 may be provided at the sealing edge of the air pocket 5.
In one embodiment of the present application, the cross section of the reinforcing rib 6 may be configured into various feasible shapes based on actual needs, for example, a square shape, a semicircular shape or a V shape.
In one embodiment of the present application, the length of the stiffener rib 6 may be the same as the length L of the seal edge of the airbag 5, i.e. extending through the seal edge of the airbag 5;
the length of the reinforcement ribs 6 may also be less than the length L of the sealing edge of the airbag 5, i.e. the reinforcement ribs occupy a part of the sealing edge of the airbag 5.
In the embodiment of the present application, the position of the reinforcing ribs 6 on the air bag 5, and the width and depth of the reinforcing ribs 6 can be flexibly set according to the size and material of the air bag, the gas generated during the formation of the main body of the battery, and the like, for example, the distance b from the reinforcing ribs 6 to the sealing edge of the air bag 5 can be in the range of 3 to 30 mm, the width a of the reinforcing ribs 6 can be in the range of 3 to 30 mm, and the depth of the reinforcing ribs 6 can be in the range of 1 to 6 mm.
Further, as shown in fig. 3, the air bag 5 may further have a punching hole 7.
The flushing pit 7 can be used for storing gas generated in the formation process of the battery so as to further improve the gas storage capacity of the gas bag 5, further improve the gas storage capacity of the gas bag 5 and further reduce the possibility of generating wrinkles and collapse.
The gas pouch 5 of the battery 104 may employ various materials available for batteries, and may be, for example, an aluminum-plastic cutting film.
In practice, the schematic representation of a cell with ribs, as shown in fig. 4, significantly reduces the likelihood of wrinkling or collapse of the air bag, even if it does, as compared to that shown in fig. 1, which is significantly less than that of the air bag without ribs, as shown in fig. 1.
In the production process of the battery, the battery is moved to the next process position after being formed so as to be subjected to the related processing of the next process, in the process, a plurality of batteries can be respectively clamped by a plurality of clamps and moved, and in the related technology, as the air bag of the battery is seriously wrinkled or collapsed after being formed, the clamping position can be deviated, the batteries are squeezed, and the safety event of smoke generation or combustion can occur.
In the related technology, the clamping position can be monitored in the process that the clamp clamps the battery to move, and when the clamping position is monitored to deviate, an alarm can be sent out, so that the clamping position can be adjusted in advance, and serious consequences are avoided.
FIG. 5 is a schematic diagram showing the comparison of the number of alarms occurring during the use of the airbag before, after and after the improvement, respectively, for the battery, wherein the number of alarms occurring each day during a plurality of days from 2018/5/1 to 2018/5/30 is counted for the airbag before the improvement, and it can be seen that the number of alarms occurring each day reaches 6 times at the maximum, and is 3 to 4 times on average;
aiming at the improved air bag, namely the air bag with the reinforcing ribs, the alarm number of the alarm occurring every day in multiple days in the period of 2018/5/31-2018/7/27 is counted, and as can be seen, the alarm frequency of the alarm occurring every day is obviously reduced, the maximum is 2 times, and more is 1 time or no alarm occurs;
the optimized air bag is further optimized according to the position of the reinforcing rib on the air bag, the width and the thickness of the reinforcing rib, the alarm number of alarms generated every day in multiple days in 2018/7/28-2018/8/18 periods is counted, and therefore the alarm frequency of the alarms generated every day is further obviously reduced, and all alarms are not generated.
According to the practical application condition of the battery with the reinforcing ribs, after the air bag of the battery is provided with the reinforcing ribs, the degree of wrinkling or collapse of the air bag after formation is obviously improved, so that the position, clamped by the clamp, of the battery after formation is more accurate, the extrusion between the batteries in the moving process is avoided, the frequency of alarming is reduced, and the possibility of safety accidents of smoking or burning of the battery is also reduced.
Correspondingly, for the unformed battery provided in the embodiment of the present application, an embodiment of the present application further provides a method for manufacturing a battery, that is, a process for manufacturing a battery, as shown in fig. 6-1, including:
Further, after the formation treatment is performed on the unformed battery to obtain the formed battery, as shown in fig. 6-2, the method may further include:
and 65, cutting off the air bag, and packaging the cut packaging shell.
In the embodiment of the application, when the air bag also has other air storage parts, the air storage parts can be cut.
In the process of generating the battery by adopting the method, the reinforcing ribs are punched at the edge sealing positions of the air bags, so that the stress strength of the air bags is enhanced, the pressure resistance to the pressure of the generated gas is enhanced in the process of forming the battery, namely, the deformation degree of the air bags is reduced, the deformation direction of the air bags is more regular, and the possibility of generating wrinkles or collapse is further reduced.
Correspondingly, for the above unformed battery provided in the embodiment of the present application, the embodiment of the present application further provides a formation apparatus, as shown in fig. 7-1, 7-2, 8-1, 8-2, and 9, including: first feed mechanism 8, stamping device 9, hot pressing become anchor clamps 13 and unloading mechanism 15, wherein:
the first feeding mechanism 8 is used for placing a cartridge clip provided with unformed batteries 104, and the batteries 104 in the cartridge clip are moved to the stamping device 9 by a manipulator;
the punching device 9 is used for punching the reinforcing ribs 6 on the sealing edges 105 of the air bags 5 of the batteries 104, and the batteries 104 with the reinforcing ribs 6 punched are transferred to the hot-pressing forming fixture 13 by a manipulator;
the thermal compression molding jig 13 clamps the battery 104, and the battery 104 is subjected to the molding process while being clamped by the thermal compression molding jig 13;
after the formation process is completed, the battery 104 is transferred to the blanking mechanism 15.
In the process of forming the battery by using the forming equipment, the air bag with the reinforcing ribs stamped by using the stamping device is strengthened in stress strength, so that in the process of forming the battery, the pressure resistance to the pressure of generated gas is enhanced, namely the deformation degree of the air bag is reduced, the deformation direction of the air bag is more regular, and the possibility of generating wrinkles or collapse is further reduced.
In an embodiment of the application, the formation device may further include: second feed mechanism 11, overhead traveling crane 12 and cold pressing jig 14, wherein:
the battery 104 with the reinforcing ribs 6 punched out is firstly transferred to the second feeding mechanism 11 by a manipulator;
when the number of the batteries 104 loaded on the second loading mechanism 11 reaches the number required by the thermal compression molding jig 13, the crown block 12 transfers the batteries 104 loaded on the second loading mechanism 11 to the thermal compression molding jig 13;
after the formation process is completed, the crown block 12 transfers the formed battery 104 to the cold-pressing jig 14;
the cold pressing clamp 14 clamps the battery 104 for cold pressing treatment;
after the cold pressing process is completed, the crown block 12 transfers the cold-pressed battery 104 to the blanking mechanism 15.
In an embodiment of the application, the formation device may further include: a battery overturning code scanning platform 10;
the battery 104 with the punched reinforcing ribs is transferred to the battery turnover code scanning platform 10 by a manipulator, turned from a flat posture to a vertical posture after being scanned, and then transferred to the second feeding mechanism 11 by the manipulator.
The process of forming the battery by using the above formation equipment, as shown in fig. 7-3, may include the following steps:
and a step 701 of placing the cartridge clip filled with the unformed batteries on a loading position of the first loading mechanism.
In this process, can the manual execution, the manual work is placed the material loading position with the clip promptly.
In step 706, when the number of the batteries loaded on the second loading mechanism reaches the number required by the thermal compression molding jig, the overhead traveling crane transfers the batteries loaded on the second loading mechanism to the thermal compression molding jig.
Step 707 includes clamping the battery with the thermal compression jig, and performing chemical conversion processing on the battery clamped by the thermal compression jig, that is, charging chemical conversion on the battery main body of the battery.
And 709, clamping the battery by using a cold pressing clamp to perform cold pressing treatment.
And 710, after the cold pressing treatment is finished, loosening the batteries by the cold pressing clamp, and transferring the cold-pressed batteries to a blanking mechanism by a crown block.
And 711, placing the batteries on the blanking mechanism into the cartridge clips one by one through the blanking mechanism.
In an embodiment of the present application, the stamping device 9 of the forming apparatus may include: positioning mechanism 1, punching press mechanism 2 and mount 3, wherein:
the positioning mechanism 1 is provided with a positioning platform for placing the unformed battery 104, and the sealing edge 105 of the air bag 5 of the battery 104 extends out of the positioning platform;
the stamping mechanism 2 is arranged on the fixed frame 3 and comprises a downward pressing power device 201, a jacking power device 207, an upper die 203 and a lower die 204;
the pressing power device 201 is used for driving the upper die 203 to move up and down, and the jacking power device 207 is used for driving the lower die 204 to move up and down;
the upper die 203 has an upper punch nose 210, the lower die 204 has a lower punch recess 211, and a die working area is formed between the upper die 203 and the lower die 204;
the upper die 203 and the lower die 204 are respectively driven by the lower pressing power device 201 and the lifting power device 207 to realize die assembly so as to punch the reinforcing ribs 6 on the sealing edge 105 of the air bag 5 entering the working area of the die through the upper punching convex head 210 and the lower punching concave groove 211.
For the air bag with the reinforcing ribs punched by the punching device 9, the stress strength of the air bag is enhanced, so that the pressure resistance to the pressure of the generated gas is enhanced in the process of forming the battery, namely, the deformation degree of the air bag is reduced, the deformation direction of the air bag is more regular, and the possibility of generating wrinkles or collapse is further reduced.
In practical applications, the positioning mechanism 1 or the punching mechanism 2 can be manually moved to allow the sealing edge 105 of the air bag of the battery 104 to enter the working area of the mold.
For the convenience of operation and the improvement of the control precision of the pressing position for pressing the airbag 5, in an embodiment of the present application, the pressing mechanism 2 of the pressing device 9, further as shown in fig. 8-1, may further include: and the advancing power device 208 is used for driving the stamping mechanism 2 to move relative to the positioning mechanism 1 so as to enable the sealing edge 105 of the air bag 5 to enter the working area of the die.
In another embodiment of the present application, the positioning mechanism 1 of the punching device 9, further, may further include: and the advancing power device is used for driving the positioning mechanism 1 to move relative to the punching mechanism 2 so as to enable the sealing edge 105 of the air bag 5 to enter the working area of the die.
For the above-mentioned punching device 9 provided in the embodiment of the present application, the pressing power device 201, the lifting power device 207, and the forward power device 208 may be driven by various power manners, and the power manners adopted by the power devices may be the same or different.
For example, a cylinder power mode may be adopted, specifically, the downward power device 201 may be a downward cylinder 201, the upward power device 207 may be an upward cylinder 207, and the forward power device 208 may be a forward cylinder 208.
In an embodiment of the present application, further, as shown in fig. 8-1, the punching mechanism 2 may further include: the linear slide rail 206, the upper die 203 and the lower die 204 move up and down along the linear slide rail 206, so that the pressing precision between the upper die 203 and the lower die 204 is ensured, and particularly, the upper die 203 and the lower die 204 can be sleeved on the linear slide rail 206.
In an embodiment of the present application, further, as shown in fig. 9, the corners of the cross section of the upper punch 210 may be arc-shaped, for example, having an R-corner shape, and the corners of the cross section of the lower punch recess 211 may be arc-shaped, for example, having an R-corner shape, that is, an R-corner is chamfered at the corners of the upper punch 210 and the lower punch recess 211, so that the punching position of the air bag is smoother when the upper die 203 and the lower die 204 are clamped, and damage to the air bag is avoided.
Further, a sufficient gap may be reserved between the upper stamping convex head 210 and the lower stamping concave groove 211, and the surface roughness is controlled not to be too rough during processing, so as to further ensure that the air bag is not damaged during stamping, specifically, how large gap is reserved, and the standard for controlling the roughness can be flexibly set based on the material of the air bag, the stamping strength during stamping, and the practical application requirements, which are not described herein by way of example.
In the embodiment of the application, the cross section of the reinforcing rib 6 obtained by stamping can be square, semicircular or V-shaped, and the depth and the width of the reinforcing rib 6 can be set according to actual requirements.
Moreover, the lengths of the upper punch 210 and the lower punch groove 211 can be greater than the length of the seal edge 105 of the air bag 5, so that the length of the reinforcing rib 6 reaches the length of the seal edge 105 of the air bag 5, namely, the reinforcing rib penetrates through the seal edge 105 of the air bag 5; the length of the upper punch protrusion 210 and the lower punch recess 211 may be less than the length of the seal 105 of the air bag 5, i.e., only a portion of the seal 105 of the air bag 5 is punched.
In one embodiment of the present application, the upper punch 210 may have a size of 1 × 2 mm, i.e., a width of 1 mm and a thickness of 2 mm, and correspondingly, the lower punch groove 211 may have a size of 3 × 4 mm, i.e., a width of 3 mm and a depth of 4 mm, and according to the size of the upper punch 210 and the lower punch groove 211, the width of the punched reinforcing bar is about 2 mm and the depth is about 2 mm.
In order to facilitate the smooth demolding of the airbag 5 after the airbag 5 is punched, a structure having a blowing function may be designed in the lower mold 204, as shown in fig. 10, which includes a front view and a side view of the upper mold 203, and a front view and a side view of the lower mold 204, and the punching mechanism 2 may further include: the air source connector 204A is connected with the lower die 203, the air source connector 204A is used for connecting an external compressed air source, and the lower stamping groove 211 of the lower die 203 is provided with a flow equalizing air passage 204B and a blowing hole 204C, so that air from the external compressed air source passes through the flow equalizing air passage 204B and is discharged from the blowing hole 204C.
Further, in order to achieve a better demolding effect and clean impurities in the lower stamping groove 211, the blow hole 204C may be located at the lowest position of the lower stamping groove 211.
In an embodiment of the present application, as shown in fig. 8-1, further, in the above-mentioned punching mechanism 2, a piston rod 213 of the downward-pressing power device 201 is connected to an upper die fixing base 212, and the upper die fixing base 212 is connected to the upper die 203, so that the upper die fixing base 212 connected through the piston rod 213 drives the upper die 203 to move up and down.
Further, in the above-described press mechanism 2, the piston rod 214 of the lift-up power unit 207 is connected to the lower die 204, so that the lower die 204 is driven to move up and down by the piston rod 214.
As shown in fig. 8-1, the punching mechanism 2 may further include: a buffer spring 202 and a stroke-adjustable bolt 209;
the piston rod 213 can pass through the middle of the upper die fixing seat 212, the stroke-adjustable bolt 209 is installed at one end of the piston rod 213, the buffer spring 202 is located between the stroke-adjustable bolt 209 and the upper die fixing seat 212, the buffer spring 202 can be used for buffering impact force generated when the upper die and the lower die are pressed, and the buffer spring 202 is fixed by the stroke-adjustable bolt 209 and used for adjusting the stroke of the buffer spring 202, so that the pressure of the upper die 203 can be further adjusted.
In order to keep the position of the sealing edge 105 stable when the sealing edge 105 of the airbag 5 is punched, and to prevent the airbag 5 from being stuck by the upper mold 203 when the airbag 5 is removed from the mold after the punching is completed, as shown in fig. 8-1 and 11, the punching mechanism 2 may further include: an air bag pressing mechanism 205, fig. 11 is a side view of the air bag pressing mechanism 205;
the air bag pressing mechanism 205 may specifically include: a hold down spring 205A, a press block 205B, and a support block 205C, wherein: the pressing spring 205A is positioned above the pressing block 205B and connected with the pressing block 205B, the pressing spring 205A and the pressing block 205B are both arranged on the upper die fixing seat 212, the lower surface of the pressing block 205B is lower than the upper punching raised head 210, and the supporting block 205C is arranged on the lower die 204;
under the elastic action of the pressing spring 205A, the pressing block 205B can be changed in position relative to the upper die 203, so that when the upper die 203 and the lower die 204 are closed, since the lower surface of the pressing block 205B is lower than the upper punching boss 210, the pressing block 205B and the supporting block 205C can press the sealing edge 105 of the air bag 5 before punching, the position of the sealing edge 105 is kept stable, and after punching, when the upper die 203 is raised, the pressing block 205B is separated from the sealing edge 105 later than the upper die 203, so that the air bag 5 can be prevented from being stuck by the upper die 203.
In one embodiment of the present application, in order to facilitate control over the position where the battery main body 4 of the battery 104 is placed on the positioning platform, as shown in fig. 12 and 13, the positioning mechanism 1 may include: a side push block 101, an upper push block 102 and a stop block 103;
the stop block 103 is arranged on the side edge of the positioning platform and is higher than the surface of the positioning platform;
the side push block 101 and the push-up block 102 are used for moving the battery body 4 of the battery 104 to a specified position after the battery 104 is placed on the positioning platform, and the stopper 103 is used for stopping the battery body 4 of the battery 104 from extending out of the positioning platform, so that the sealing edge 105 of the air bag of the battery 104 extends out of the positioning platform.
Further, the stopper 103 may be made of a flexible material to automatically accommodate the displacement of the battery main body 4 during the formation of the U-shaped groove of the air bag.
In order to meet the moving requirements of the battery bodies 4 with different thicknesses, as shown in fig. 14, the stopper 103 may have a fixing hole 106, and the fixing hole 106 is oval, so that when the stopper 103 is mounted on the side edge of the positioning platform through the fixing hole 106, the mounting height of the stopper 103 may be adjusted by adjusting the vertical position of the adjusting bolt in the fixing hole 106, thereby meeting the moving requirements of the battery bodies 4 with different thicknesses.
In one embodiment of the present application, in order to simplify the structure, a battery groove matching with the size of the battery body 4 of the battery 104 may be provided on the positioning platform of the positioning mechanism 1 for placing the battery body 4 of the battery 104. During use, the battery body 4 of the battery 104 can be directly placed in the battery groove to ensure that the battery body 4 is located at a designated position on the positioning platform.
Based on the above stamping device 9 provided in the embodiment of the present application, the embodiment of the present application further provides a method for stamping a reinforcing rib on an air bag by using the above stamping device 9, as shown in fig. 15, the method may include the following process flows:
the first step is as follows: placing the battery 104 on the positioning platform;
the second step is that: controlling the sealing edge 105 of the air bag 5 to enter a working area of the die, and controlling the lower die 204 to lift to line the air bag 5 through a lifting power device 207;
the third step: controlling the upper die 203 to be pressed downwards by pressing the power device 201, matching the upper die 203 with the lower die 204, and maintaining the preset time length so as to punch reinforcing ribs on the sealing edge 105 of the air bag 5;
the fourth step: by pressing down the power device 201, the upper die 203 is controlled to ascend so as to separate the air bag 5 from the upper punching boss 210;
the fifth step: the lower die 204 is controlled to descend by the jacking power device 207 so that the air bag 5 is separated from the lower stamping groove 211.
And after the fifth step is finished, obtaining the unformed battery with the reinforcing ribs, and then entering a sixth step to move the unformed battery to the next working procedure position.
Through the process flow shown in the above method, a reinforcing rib can be punched on the sealing edge 105 of the air bag 5 of the battery 104.
Further, in an embodiment of the present application, the stamping mechanism 2 of the stamping device 9 may further include: a forward power unit 208;
accordingly, in the above method, the pressing mechanism 2 can be controlled to move toward the positioning mechanism 1 by the advancing power unit 208, so that the sealing edge 105 of the air bag 5 enters the die working area.
Further, in an embodiment of the present application, the positioning mechanism 1 of the stamping device 9 may further include: a forward power unit;
accordingly, in the above method, the positioning mechanism 1 can be controlled to move toward the punching mechanism 2 by the advancing power device so that the sealing edge 105 of the air bag 5 enters the die working area.
The forward power device 208 is used for moving the sealing edge 105 of the air bag into a working area of the die, so that the operation is more convenient compared with the manual movement of the positioning mechanism 1 or the punching mechanism 2, and the control precision of the punching position for punching the air bag 5 is improved.
Further, in an embodiment of the present application, the stamping mechanism 2 of the stamping device 9 may further include: the air source connector 204A is connected with the lower die 203, and the air source connector 204A is used for connecting an external compressed air source;
the lower punching groove 211 of the lower die 203 is provided with a flow equalizing air passage 204B and a blowing hole 204C, so that air from an external compressed air source passes through the flow equalizing air passage 204B and is discharged from the blowing hole 204C;
accordingly, after the lower die 204 is controlled to descend by the jacking power device 207, that is, in the fifth step, the method may further include:
air is blown into the flow equalizing air channel 204B of the lower die 203 through the air source connector 204A by using an external compressed air source and is exhausted from the air blowing hole 204C, so that the air bag 5 is separated from the lower punching groove 211.
Through the blowing process, after the air bag 5 is punched, the air bag 5 can be smoothly demoulded, and sundries in the lower punching groove 211 can be cleaned.
Further, in an embodiment of the present application, the positioning mechanism 1 of the stamping device 9 may include: a side push block 101, an upper push block 102 and a stop block 103;
the stopper 103 is arranged on the side edge of the positioning platform and is higher than the surface of the positioning platform, and is used for stopping the battery body 4 of the battery 104 from extending out of the positioning platform;
accordingly, after placing the battery 104 on the positioning platform, the method may further include:
the battery main body 4 of the battery 104 is moved to a specified position using the side push block 101 and the push-up block 102, so that the control of the position where the battery main body 4 of the battery 104 is placed on the positioning platform can be facilitated.
Further, in an embodiment of the present application, the positioning platform of the positioning mechanism 1 of the stamping device 9 may have a battery groove matching with the size of the battery body 4 of the battery 104;
accordingly, when the battery body 4 of the battery 104 needs to be placed at the designated position of the positioning platform, the battery body 4 of the battery 104 can be directly placed at the battery groove of the positioning platform, and the battery groove is the designated position.
In the above method, after the punching process is completed for one battery 104, the positioning mechanism 1 may be controlled to be separated from the punching mechanism 2, and the next battery 104 to be punched is placed on the positioning platform, and the punching process for the next battery 104 to be punched is started.
In the method for punching reinforcing ribs on an air bag by using the punching device 9 provided in the embodiment of the present application, the battery 104 can be automatically placed on the positioning platform by using a clamp, and in the method, the control of the pressing power device 201, the lifting power device 207 and the advancing power device 208, and the side push block 101 and the push block 102 can be automatically controlled by using a computer program so as to ensure the precision of each punching, which is not described in detail herein by way of example.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only for the preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application are included in the protection scope of the present application.
Claims (10)
1. An unformed battery, comprising: packing casing and electric core, the packing casing includes the main part that is used for holding the electric core and connects the air pocket of main part, wherein:
the air bag is provided with a reinforcing rib.
2. The battery of claim 1, wherein the reinforcing ribs are provided at the edge seals of the air pockets.
3. The battery according to claim 1, wherein the reinforcing rib has a square, semicircular or V-shaped cross section.
4. A method of making a battery, comprising:
placing the battery core into the main body part of the packaging shell, and injecting electrolyte;
encapsulating the body portion;
stamping the edge sealing of the air bag to form a reinforcing rib to obtain an unformed battery;
and carrying out formation treatment on the unformed battery.
5. The method of manufacturing according to claim 4, wherein after obtaining the formed battery, the method further comprises:
cutting to remove the air bag, and packaging the cut packaging shell.
6. A formation apparatus, comprising: first feed mechanism, stamping device, hot pressing become anchor clamps and unloading mechanism, wherein:
the feeding mechanism is used for placing a cartridge clip provided with unformed batteries, and the batteries in the cartridge clip are transferred to the stamping device by a manipulator;
the stamping device is used for stamping a reinforcing rib on an air bag of the battery, and the battery stamped with the reinforcing rib is transferred to a hot-pressing forming fixture by a manipulator;
the hot-pressing formation clamp clamps the battery, and the battery is subjected to formation treatment under the condition that the battery is clamped by the hot-pressing formation clamp;
and after the formation treatment is finished, transferring the battery to a blanking mechanism.
7. The formation equipment according to claim 6, further comprising: second feed mechanism, overhead traveling crane and cold pressing fixture, wherein:
the battery with the stamped reinforcing ribs is firstly transferred to a second feeding mechanism by a manipulator;
when the number of the batteries loaded on the second loading mechanism reaches the number required by the hot-pressing forming fixture, the overhead traveling crane transfers the batteries loaded on the second loading mechanism to the hot-pressing forming fixture;
after the formation treatment is completed, the crown block transfers the formed battery to the cold pressing fixture;
the cold pressing clamp clamps the battery for cold pressing treatment;
and after the cold pressing treatment is finished, the crown block transfers the cold-pressed battery to a blanking mechanism.
8. The formation apparatus according to claim 7, further comprising: the battery is turned over and the code scanning platform is used;
the battery with the reinforcing ribs is punched, the battery is moved to the battery overturning and code scanning platform through the manipulator, and after the battery is scanned, the battery is overturned to be in a vertical posture from a flat posture, and then the battery is moved to the second feeding mechanism through the manipulator.
9. The forming apparatus according to claim 8, wherein the stamping device comprises: positioning mechanism, punching press mechanism and mount, wherein:
the positioning mechanism is provided with a positioning platform for placing an unformed battery, and the sealed edge of the air bag of the battery extends out of the positioning platform;
the stamping mechanism is arranged on the fixed frame and comprises a pressing power device, a jacking power device, an upper die and a lower die;
the lower die is used for supporting the upper die, the lower die is used for supporting the lower die, and the lower die is used for supporting the lower die;
the upper die is provided with an upper stamping raised head, the lower die is provided with a lower stamping groove, and a die working area is formed between the upper die and the lower die;
the upper die and the lower die are respectively driven by the lower pressing power device and the jacking power device to realize die assembly, so that the sealing edge of the air bag entering the working area of the die is stamped with the reinforcing ribs through the upper stamping raised head and the lower stamping groove.
10. The formation equipment according to claim 9,
the punching press mechanism still includes: the advancing power device is used for driving the stamping mechanism to move relative to the positioning mechanism so as to enable the sealing edge of the air bag to enter the working area of the die; or
The positioning mechanism further comprises: and the advancing power device is used for driving the positioning mechanism to move relative to the stamping mechanism so as to enable the sealing edge of the air bag to enter the working area of the die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911046765.8A CN112821007A (en) | 2019-10-30 | 2019-10-30 | Unformed battery, preparation method of battery and formation equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911046765.8A CN112821007A (en) | 2019-10-30 | 2019-10-30 | Unformed battery, preparation method of battery and formation equipment |
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| CN112821007A true CN112821007A (en) | 2021-05-18 |
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