CN114243116A - Battery hot-pressing aging system and method - Google Patents
Battery hot-pressing aging system and method Download PDFInfo
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- CN114243116A CN114243116A CN202111544436.3A CN202111544436A CN114243116A CN 114243116 A CN114243116 A CN 114243116A CN 202111544436 A CN202111544436 A CN 202111544436A CN 114243116 A CN114243116 A CN 114243116A
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- 238000007789 sealing Methods 0.000 claims abstract description 80
- 238000007599 discharging Methods 0.000 claims abstract description 51
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- 208000012260 Accidental injury Diseases 0.000 description 1
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- 229910000733 Li alloy Inorganic materials 0.000 description 1
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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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
-
- 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
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- Chemical Kinetics & Catalysis (AREA)
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- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
Abstract
The embodiment of the utility model provides a battery hot-pressing aging system and a battery hot-pressing aging method, wherein the battery hot-pressing aging system comprises an aging device, an exhaust heat sealing device and a charging and discharging device; wherein, the exhaust heat sealing device and the charging and discharging device are respectively arranged on the side edge of the aging device; the aging device comprises an aging clamp and a pressing structure; the aging clamp is connected with the pressing structure; the exhaust heat sealing device comprises an exhaust heat sealing structure and a manipulator; the exhaust heat sealing structure is connected with the manipulator; the exhaust heat sealing structure comprises a puncture part, an air exhaust part and a heat sealing part; the charging and discharging device comprises a charging and discharging module and a control module; the control module is respectively electrically connected with the charge-discharge module and the pressing structure. Through ageing device, exhaust sealing device and charge-discharge device, realize ageing, charge-discharge detection and exhaust heat-seal to the battery simultaneously to improve production efficiency.
Description
Technical Field
The utility model relates to the technical field of battery aging, in particular to a battery hot-pressing aging system and a battery hot-pressing aging method.
Background
The battery is a battery which uses lithium metal or lithium alloy as a negative electrode material and uses a non-aqueous electrolyte solution, and the lithium metal has very high requirements on the environment for processing, storage and use due to the very active chemical characteristics of the lithium metal, so that the lithium battery becomes the mainstream at present along with the development of scientific technology.
Aging, charge and discharge detection and exhaust are important processes after the liquid injection of the soft package battery, and directly influence the internal resistance of the battery, the consistency of voltage, the service life of the battery and the use safety.
The existing soft package battery only carries out aging, independent charge and discharge detection and independent puncture and exhaust on the edge of an air bag of the battery through manual work, and the battery is produced according to the process one by one under the condition of more production batches of the battery, wherein the time required by the charge and discharge detection process of the battery on-line inspection is as long as 2 s-10 min (the specific time is customized by a customer), and the like, so that the production efficiency is greatly reduced.
Disclosure of Invention
In view of the above problems, embodiments of the present invention are proposed to provide a battery hot press aging method and a corresponding battery hot press aging system that overcome or at least partially solve the above problems.
In order to solve the above problems, an embodiment of the present invention discloses a battery hot-pressing aging system, including: an aging device, an exhaust heat sealing device and a charging and discharging device; the exhaust heat sealing device and the charging and discharging device are respectively arranged on the side edge of the aging device;
the aging device comprises an aging clamp and a pressing structure; the aging clamp is connected with the pressing structure;
the exhaust heat sealing device comprises an exhaust heat sealing structure and a manipulator; the exhaust heat sealing structure is connected with the manipulator; the exhaust heat sealing structure comprises a puncture part, an air exhaust part and a heat sealing part;
the charging and discharging device comprises a charging and discharging module and a control module; the control module is respectively electrically connected with the charge-discharge module and the pressing structure; the charge-discharge module is electrically connected with the aging clamp;
when the battery is aged, the aging clamp clamps and heats the battery; the pressing structure presses the battery through the aging clamp; the puncturing part punctures the heated and pressurized battery; the air extraction part extracts the gas in the punctured battery; the heat sealing part seals the battery after gas is extracted; and the charging and discharging module charges and discharges the heated and pressurized battery and the sealed battery through the aging clamp.
Optionally, the pressing structure comprises a mounting frame, a pressing power part, a first transmission part, a second transmission part and a pressing part;
the downward pressing power part is arranged at the outer end part of the mounting rack; the first transmission part is arranged in the mounting frame; the second transmission part and the pressing part are respectively arranged on the first transmission part; the pressing power part drives the pressing part through the first transmission part and the second transmission part.
Optionally, a connector and at least two layers of jig tables; the clamp tables are movably connected through the connecting piece, and are arranged in an overlapping mode;
the clamp table comprises two clamp plates; the two clamp plates are in the same plane;
the clamp plate comprises a positioning piece, a pressing piece, a detection area and a heating area; the number of the pressing pieces, the number of the detection areas and the number of the heating areas are two respectively; the positioning pieces and the detection areas are respectively arranged on the opposite sides of the heating areas, and the positioning pieces are respectively arranged between the heating areas and between the detection areas; the detection area is overlapped with the pressing piece;
when clamping a battery, the battery is positioned between the clamp plates of the clamp tables of adjacent layers; the battery is respectively contacted with the heating areas of the clamp plates of the adjacent layers, the detection area is electrically connected with the lugs of the battery, and the pressing piece is contacted with the lugs of the battery.
Optionally, a safety guard is also included; the safety protection device is respectively electrically connected with the pressing structure and the aging clamp.
Optionally, the air extracting portion is disposed at one side of the puncturing portion, and the air extracting portion and the puncturing portion are respectively disposed in the heat sealing portion.
Optionally, the piercing portion comprises a piercing mounting bracket, a piercing member, a piercing transmission member, and a piercing power member;
the puncture mounting frame is fixedly arranged on the heat sealing part;
the puncture transmission piece is fixedly arranged in the puncture mounting frame; one end of the puncture transmission member is connected with the puncture member, and the other end of the puncture transmission member is connected with the puncture power member.
Optionally, the air extraction part comprises an air extraction mounting frame, an air extraction piece and an air extraction power piece;
the air exhaust mounting rack is fixedly arranged on one side of the puncture mounting rack;
the air pumping part and the air pumping power part are respectively arranged on one side of the air pumping mounting frame, which is far away from the puncture mounting frame.
Optionally, the heat seal portion comprises a heat seal mounting frame, a heat seal member and a heat seal motive member; the heat-sealing mounting rack is respectively connected with the manipulator and the puncture mounting rack;
the heat-seal power spare set firmly in the heat-seal mounting bracket, the activity of heat-seal spare is located the heat-seal mounting bracket, just the heat-seal spare with heat-seal power spare power connection.
A method of hot press aging a battery, the method comprising:
heating and pressurizing the battery by the aging device;
the battery is charged and discharged for one time through the charging and discharging device, and the voltage and the current of the battery are monitored;
exhausting the battery through the exhaust heat sealing device;
carrying out secondary charging and discharging on the battery through the charging and discharging device, and monitoring the voltage and the current of the battery;
and marking the battery as an NG battery when the voltage or/and the current of the battery is abnormal in the primary charge-discharge or/and secondary charge-discharge processes.
Optionally, wherein the battery is degassed three times by the degassing and heat-sealing device; the step of exhausting the battery through the exhaust heat sealing device comprises the following steps:
piercing a preset position of the battery through the piercing part;
vacuumizing the battery through the air exhaust part;
and heat-sealing the preset position of the battery through the heat-sealing part.
The embodiment of the utility model has the following advantages: passing through an aging device, an exhaust heat sealing device and a charging and discharging device; the exhaust heat sealing device and the charging and discharging device are respectively arranged on the side edge of the aging device; the aging device comprises an aging clamp and a pressing structure; the aging clamp is connected with the pressing structure; the exhaust heat sealing device comprises an exhaust heat sealing structure and a manipulator; the exhaust heat sealing structure is connected with the manipulator; the exhaust heat sealing structure comprises a puncture part, an air exhaust part and a heat sealing part; the charging and discharging device comprises a charging and discharging module and a control module; the control module is respectively electrically connected with the charge-discharge module and the pressing structure; when the battery is aged, the aging clamp clamps and heats the battery; the pressing structure presses the battery through the aging clamp; the puncturing part punctures the heated and pressurized battery; the air extraction part extracts the gas in the punctured battery; the heat sealing part seals the battery after gas is extracted; the charge-discharge module charges and discharges the heated and pressurized battery and the sealed battery. Through aging device, exhaust sealing device and charge-discharge device, realize simultaneously to the battery age, charge-discharge detection and exhaust heat-seal to improve production efficiency.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of a thermal press aging system for a battery according to the present invention;
FIG. 2 is a schematic structural diagram of a press-down structure in a thermal press aging system for a battery according to the present invention;
FIG. 3 is a schematic structural diagram of a first transmission portion in a pressing structure of a thermal pressing aging system for a battery according to the present invention;
FIG. 4 is a schematic structural diagram of an aging fixture in a battery hot-pressing aging system according to the present invention;
FIG. 5 is a schematic structural diagram of a fixture table of an aging fixture in a battery hot-pressing aging system according to the present invention;
FIG. 6 is a schematic structural diagram of an exhaust heat sealing device in a thermal press aging system for a battery according to the present invention;
FIG. 7 is a schematic structural diagram of a manipulator of an exhaust heat sealing device in a battery hot-pressing aging system according to the present invention;
FIG. 8 is a schematic structural diagram of an exhaust heat seal structure of an exhaust heat seal device in a thermal press aging system for a battery according to the present invention;
FIG. 9 is a schematic structural diagram of a piercing portion of an exhaust heat seal device in a thermal press aging system for a battery according to the present invention;
FIG. 10 is a schematic diagram of the structure of the air exhaust portion of the exhaust heat sealing device in the thermal press aging system of the battery of the present invention;
FIG. 11 is a schematic view showing the structure of the heat-seal land of the exhaust heat-seal device in the thermal press aging system for a battery according to the present invention;
fig. 12 is a flowchart illustrating steps of an embodiment of a method for hot press aging a battery according to the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
One of the core ideas of the embodiment of the utility model is that the aging device 1, the exhaust heat sealing device 3 and the charging and discharging device 2 are used for aging; the exhaust heat sealing device 3 and the charging and discharging device 2 are respectively arranged on the side edge of the aging device 1; the aging device 1 comprises an aging clamp and a pressing structure; the aging clamp is connected with the pressing structure; the exhaust heat sealing device 3 comprises an exhaust heat sealing structure 32 and a manipulator 31; the exhaust heat seal structure 32 is connected with the manipulator 31; the exhaust heat seal structure 32 comprises a piercing part, an air exhaust part and a heat seal part; the charging and discharging device 2 comprises a charging and discharging module and a control module; the control module is respectively electrically connected with the charge-discharge module and the pressing structure; when the battery 113 is aged, the aging jig clamps and heats the battery 113; the pressing structure presses the battery 113 through the aging jig; the piercing part pierces the heated and pressurized battery 113; the air extraction part extracts the gas inside the punctured battery 113; the heat-seal portion seals the battery 113 after gas extraction; the charge and discharge module charges and discharges the battery 113 after heating and pressurizing and the battery 113 after sealing. Through the aging device 1, the exhaust heat sealing device 3 and the charge and discharge device 2, the battery 113 is aged, charged and discharged, detected and exhausted and heat sealed at the same time, so that the production efficiency is improved.
Referring to fig. 1 to fig. 11, there are shown schematic structural diagrams of an embodiment of a battery hot-pressing aging system of the present invention, which may specifically include the following:
an aging device 1, an exhaust heat sealing device 3 and a charging and discharging device 2; the exhaust heat sealing device 3 and the charging and discharging device 2 are respectively arranged on the side edge of the aging device 1;
the aging device 1 comprises an aging clamp and a pressing structure; the aging clamp is connected with the pressing structure;
the exhaust heat sealing device 3 comprises an exhaust heat sealing structure 32 and a manipulator 31; the exhaust heat seal structure 32 is connected with the manipulator 31; the exhaust heat seal structure 32 comprises a piercing part, an air exhaust part and a heat seal part;
the charging and discharging device 2 comprises a charging and discharging module and a control module; the control module is respectively electrically connected with the charge-discharge module and the pressing structure; the charge-discharge module is electrically connected with the aging clamp;
when the battery 113 is aged, the aging jig clamps and heats the battery 113; the pressing structure presses the battery 113 through the aging jig; the piercing part pierces the heated and pressurized battery 113; the air extraction part extracts the gas inside the punctured battery 113; the heat-seal portion seals the battery 113 after gas extraction; the charge and discharge module charges and discharges the heated and pressurized battery 113 and the sealed battery 113 through the aging jig.
In the embodiment of the present application, the heat-seal device 2 is connected to the aging apparatus 1; the exhaust heat sealing device 3 and the charging and discharging device 2 are respectively arranged on the side edge of the aging device 1; the aging device 1 comprises an aging clamp and a pressing structure; the aging clamp is connected with the pressing structure; the exhaust heat sealing device 3 comprises an exhaust heat sealing structure 32 and a manipulator 31; the exhaust heat seal structure 32 is connected with the manipulator 31; the exhaust heat seal structure 32 comprises a piercing part, an air exhaust part and a heat seal part; the charging and discharging device 2 comprises a charging and discharging module and a control module; the control module is respectively electrically connected with the charge-discharge module and the pressing structure; when the battery 113 is aged, the aging jig clamps and heats the battery 113; the pressing structure presses the battery 113 through the aging jig; the piercing part pierces the heated and pressurized battery 113; the air extraction part extracts the gas inside the punctured battery 113; the heat-seal portion seals the battery 113 after gas extraction; the charge and discharge module charges and discharges the battery 113 after heating and pressurizing and the battery 113 after sealing. Through the aging device 1, the exhaust heat sealing device 3 and the charge and discharge device 2, the battery 113 is aged, charged and discharged, detected and exhausted and heat sealed at the same time, so that the production efficiency is improved.
Next, the battery hot press aging system in the present exemplary embodiment will be further described.
In an embodiment of the present application, the pressing structure includes a mounting frame, a pressing power part, a first transmission part, a second transmission part, and a pressing part;
the downward pressing power part is arranged at the outer end part of the mounting rack; the first transmission part is arranged in the mounting frame; the second transmission part and the pressing part are respectively arranged on the first transmission part; the pressing power part drives the pressing part through the first transmission part and the second transmission part.
As an example, the pressing power part is a pressing servo motor 121, the first transmission part is a gear assembly 122, and the second transmission part is a trapezoidal lead screw 124; the splenium is equipped with pressure sensor 123 down, the mounting bracket is equipped with spacing detection sensor 125.
In a specific implementation, the pressing structure adopts the servo motor 121 to drive the trapezoidal lead screw 124 to press down, the main gear 127 of the servo motor 121 drives 2 large gears 128, and then the large gears 128 drive 2 small gears 129, each small gear 129 respectively drives 1 trapezoidal lead screw 124 to rotate, and 4 nuts of 4 trapezoidal lead screws are installed on the pressing plate of the pressing part, wherein in order to ensure the flatness of the pressing plate installed on the nuts of the trapezoidal lead screws 124, the nuts of a single trapezoidal lead screw 124 are divided into internal and external teeth parts, which can be used to adjust the installation surfaces of the 4 trapezoidal lead screw 124 to be coplanar.
And a pressure sensor 123 is arranged below the pressing plate of the pressing part and can be used for displaying, detecting and adjusting the pressing pressure.
After the pressing plate of the pressing portion is pressed down, pressing abnormality (such as factors that the battery 113 is not placed well, material is blocked, and the like) may occur, so that whether the pressing plate of the pressing portion is pressed down is detected through the limit detection sensor 125, and whether the pressing plate of the pressing portion is in place is detected, so that abnormality occurs when the pressing force is abnormal (when the pressure of the pressure sensor 123 changes during the pressing process), that is, the pressing is not in place, and the limit detection sensor 125 does not detect a signal, so that manual adjustment can be prompted.
The aging jig includes:
a connector 112 and at least two tiers of jig stations 111; the clamp tables 111 are movably connected through the connecting piece 112, and the clamp tables 111 are arranged in an overlapping mode;
the jig stage 111 includes at least two jig plates; the at least two clamp plates are in the same plane;
the fixture plate comprises a positioning piece 117, a pressing piece 118, a detection area 114 and a heating area 116; wherein, the number of the pressing members 118, the detection area 114 and the heat generating area 116 is even; the positioning members 117 and the detection areas 114 are respectively arranged on opposite sides of the heat generating areas 116, and the positioning members 117 are respectively arranged between the heat generating areas 116 and between the detection areas 114; the detection area 114 is disposed to overlap the compression member 118;
when clamping a battery 113, the battery 113 is positioned between the clamp plates of the clamp stations 111 of adjacent layers; the batteries 113 are respectively contacted with the heating areas 116 of the fixture plates of the adjacent layers, the detection areas 114 are electrically connected with the tabs of the batteries 113, and the pressing pieces 118 are contacted with the tabs of the batteries 113.
In the embodiment of the present application, the connection member 112 and the at least two-layered jig stage 111; the clamp tables 111 are movably connected through the connecting piece 112, and the clamp tables 111 are arranged in an overlapping mode; the jig stage 111 includes at least two jig plates; the at least two clamp plates are in the same plane; the fixture plate comprises a positioning piece 117, a pressing piece 118, a detection area 114 and a heating area 116; wherein, the number of the pressing members 118, the detection area 114 and the heat generating area 116 is even; the positioning members 117 and the detection areas 114 are respectively arranged on opposite sides of the heat generating areas 116, and the positioning members 117 are respectively arranged between the heat generating areas 116 and between the detection areas 114; the detection area 114 is disposed to overlap the compression member 118; when clamping a battery 113, the battery 113 is positioned between the clamp plates of the clamp stations 111 of adjacent layers; the batteries 113 are respectively contacted with the heating areas 116 of the fixture plates of the adjacent layers, the detection areas 114 are electrically connected with the tabs of the batteries 113, and the pressing pieces 118 are contacted with the tabs of the batteries 113. The battery 113 is clamped by the clamp table 111, so that the contact area of the battery 113 can be increased, and the battery 113 is prevented from being damaged; by providing a plurality of layers of the jig stages 111, a plurality of the batteries 113 can be simultaneously clamped to improve the production efficiency.
Next, the aging jig in the present exemplary embodiment will be further described.
In an embodiment of the present application, when clamping the battery 113, the battery 113 is located between the clamp plates of the clamp stages 111 of adjacent layers; that is, the battery 113 is located between the jig plate of the upper stage 111 and the jig plate of the lower stage 111. The battery 113 is in contact with the heating area 116 of the upper layer of the clamp plate and the heating area 116 of the lower layer of the clamp plate, so that the upper surface and the lower surface of the battery 113 are heated; the detection area 114 is electrically connected with a tab of the battery 113 so as to charge and discharge the battery 113 and realize detection during charging and discharging; the pressing member 118 contacts with the tab of the battery 113 to press down the battery 113, so as to ensure the electrical connection between the tab of the battery 113 and the detection region 114.
In an embodiment of the present application, the clamp station 111 includes two clamp plates; the two clamp plates are in the same plane; the number of the pressing member 118, the detection area 114 and the heat generating area 116 is two.
The jig stage 111 is a plate-shaped jig stage 111 so as to increase a contact area between the jig stage 111 and the battery 113.
In another embodiment of the present application, the jig plate further includes a mounting area provided with mounting holes through which the jig stage 111 can be mounted to other structures, such as a hold-down structure.
In an embodiment of the present application, the compression member 118 is located below the detection zone 114; the compressing part 118 of the clamp plate on the upper layer presses down the battery 113 on the clamp plate on the lower layer, so as to ensure that the tab of the battery 113 on the clamp plate on the lower layer is electrically connected with the detection area 114 on the clamp plate on the lower layer.
In an embodiment of the present application, the heating area 116 is provided with a silica gel heating plate.
As an example, the silica gel heating plate comprises a heating member; the heating piece is arranged inside the silica gel heating plate.
In one specific implementation, the heat generating component is a thermocouple 115; in one aspect, the thermocouple 115 heats the battery 113; on the other hand, the thermocouple 115 detects and monitors the internal temperature of the battery 113, so that abnormal temperature rise of the battery 113, which is bad in the charging and discharging detection process, and even fire can be prevented.
In an embodiment of the present application, the detection area 114 is provided with a circuit board.
In an embodiment of the present application, an elastic member is disposed between the fixture tables 111 of adjacent layers; the elastic force of the elastic member of the upper stage of the jig stage 111 is smaller than that of the elastic member of the lower stage of the jig stage 111.
In one embodiment, the clamping tables 111 of each layer are connected by chains (i.e., connecting members 112) to achieve uniform vertical spacing of the clamping tables 111 of each layer, so as to facilitate taking and placing the batteries 113. Every layer built-in 4 special square springs of mould (being elastic component) between the anchor clamps platform 111, and each layer the elasticity of the spring between anchor clamps platform 111 is different, promptly from last to down, the elasticity of spring crescent (because the superiors are for not having anchor clamps weight, only one deck anchor clamps weight on the second floor from top to bottom, and the lower floor then has 25 layers anchor clamps weight, consequently the elasticity of spring needs from last to bottom crescent), in order to offset anchor clamps platform 111 self weight with battery 113's weight makes every layer the pressure that battery 113 in the anchor clamps platform 111 received the push down is equal.
The exhaust heat seal device 3 includes:
an exhaust heat seal structure 32 and a robot 31; wherein the exhaust heat seal structure 32 is connected with the robot 31;
the exhaust heat seal structure 32 comprises a piercing part, an air exhaust part and a heat seal part; the air exhaust part is arranged on one side of the puncture part, and the air exhaust part and the puncture part are respectively arranged in the heat sealing part;
when the exhaust heat sealing device 3 works, the puncture part punctures the edge of the air bag of the battery 113; the air extraction part extracts the gas inside the punctured battery 113; the heat-sealed portion seals the battery 113 after the gas is extracted.
In the embodiment of the present application, by the exhaust heat seal structure 32 and the robot 31; wherein the exhaust heat seal structure 32 is connected with the robot 31; the exhaust heat seal structure 32 comprises a piercing part, an air exhaust part and a heat seal part; the air exhaust part is arranged on one side of the puncture part, and the air exhaust part and the puncture part are respectively arranged in the heat sealing part; when the exhaust heat sealing device 3 is operated, the battery 113 is punctured by the puncture part; the air extraction part extracts the gas inside the punctured battery 113; the heat-sealed portion seals the battery 113 after the gas is extracted. The volume is reduced by integrating the piercing section, the air extracting section, and the heat sealing section into the air discharge heat seal structure 32.
Next, the exhaust heat seal device 3 in the present exemplary embodiment will be further described.
In one embodiment of the present application, the piercing portion includes a piercing mounting bracket, a piercing member, a piercing transmission member, and a piercing power member;
the puncture mounting frame is fixedly arranged on the heat sealing part;
the puncture transmission piece is fixedly arranged in the puncture mounting frame; one end of the puncture transmission member is connected with the puncture member, and the other end of the puncture transmission member is connected with the puncture power member.
It should be noted that the puncturing piece can be a blade or a sharp needle; the piercing transmission member may be a lead screw; the piercing power member may be a stepper motor.
In a specific implementation, the puncture part punctures the edge position of the airbag of the battery 113, a first stepping motor 323 is adopted to be matched with a lead screw arranged on the puncture part to eject before puncturing, and a clamp 321 is clamped when the lead screw ejects out by utilizing a connecting rod structure principle; after the punching, the blade 322 is ejected by the second stepping motor 324 in cooperation with a lead screw provided by the blade, and a spring buffer structure is arranged in the blade 322, and when the second stepping motor 324 ejects, the blade 322 is not immediately ejected, but the spring in the spring buffer structure performs animal power, and after the second stepping motor 324 ejects a certain distance, the spring is loosened in tension, so that the blade 322 is ejected by inertia to be punctured, and after the punching, the second stepping motor 324 is recovered.
In one embodiment of the present application, the air extraction portion includes an air extraction mounting bracket, an air extraction member, and an air extraction power member;
the air exhaust mounting rack is fixedly arranged on one side of the puncture mounting rack;
the air pumping part and the air pumping power part are respectively arranged on one side of the air pumping mounting frame, which is far away from the puncture mounting frame.
In one embodiment of the present application, the pumping member comprises two suction cup supports; the sucker supports are respectively movably arranged on one side of the air exhaust mounting frame, which is far away from the puncture mounting frame.
In one implementation, after the bag edge of the battery 113 is punctured, the vacuum suction cup 326 of the air pumping member is aligned with the punctured position to draw air from the inside of the battery 113, so as to achieve vacuum inside the battery 113. The fourth stepping motor 325 is used for being matched with a lead screw to eject, and the sucking disc supports at the upper part and the lower part are ejected by utilizing the cam structure principle, so that the two vacuum sucking discs 326 move up and down and are aligned with the two piercing positions to suck the gas in the battery 113.
In one embodiment of the present application, the heat seal includes a heat seal mount, a heat seal 328, and a heat seal motive; wherein the heat-seal mounting rack is respectively connected with the manipulator 31 and the puncture mounting rack;
the heat-seal power spare set firmly in the heat-seal mounting bracket, heat-seal 328 activity is located the heat-seal mounting bracket, just heat-seal 328 with heat-seal power spare power connection.
In a specific implementation, a fifth stepping motor 327 is used to match with a lead screw to eject, and the lead screw is ejected at the position by using a cam structure principle to close and press the upper and lower heat seals 328; the heat sealing member 328 is made of a metal copper material, has good heat conduction performance, is internally provided with a stainless steel heating pipe 329, conducts heat to the heat sealing member 328 through the heating pipe 329, and then carries out hot stamping and sealing on the puncture position after the heat sealing member 328 is closed. Here, the heat seal 328 is provided with a guide strip 3210 for guiding the exhaust heat seal structure 32 before moving into the airbag position of the battery 113, so that the exhaust heat seal structure 32 can more smoothly move into the airbag position of the battery 113.
It should be noted that, the above structure is a vacuum pumping operation flow, and if the 3 steps need to be performed again, the three-axis robot moves to another position (about 5-10mm deviation) and repeats the operation flow.
In an embodiment of the present application, the heat seal 328 includes a heat-generating tube 329; the heat pipe 329 is disposed in the heat seal 328.
In an embodiment of the present application, the heat seal 328 further includes a guide bar 3210; the guide strips 3210 are disposed on both sides of the heat seal 328.
In an embodiment of the present application, the robot 31 is a three-axis robot.
In one implementation, the three-axis robot is used to control the movement of the exhaust heat seal structure 32. The three-axis manipulator adopts a first servo motor 315 matched with a gear rack 316 to control the transverse moving direction to move left and right, adopts a second servo motor 311 matched with a ball screw 312 to control the vertical moving direction to move up and down, and adopts a third servo motor 313 matched with a ball screw 314 to control the front and back moving direction.
In an embodiment of the present application, the charging and discharging device 2 includes a charging and discharging module and a control module; the control module is respectively electrically connected with the charge-discharge module and the pressing structure
In a specific implementation, the charging and discharging device 2 is used for cooperating with the aging device 1 in the aging process of the lithium battery 113, and the charging and discharging device 2 is matched with the aging device 1 to perform charging and discharging tests in a constant temperature and pressure process in the aging process, and mainly comprises the functions of temperature control, constant pressure control, current control, voltage control, battery 113 performance screening and the like.
In another embodiment of the present application, safety shield apparatus 4 is also included; the safety protection device 4 is electrically connected with the pressing structure and the aging fixture respectively.
In one specific implementation, the safety protection device 4 has temperature and voltage alarm settings, and each stage of process parameters can be set and corresponds to a corresponding processing mechanism.
The safety machine pretreatment uses an electric device. Meanwhile, the circuit is designed independently and cannot be shared by circuits such as heating, pressurizing and the like. The safety mechanical pretreatment mechanism is prevented from being powered off and stopped after safety problems occur. Halogen-free flame-retardant wires are adopted for circuit wires of the safety mechanical pretreatment mechanism and the like.
The contact position or possible contact positions of the battery 113 are insulated.
The gas circuit adopts fire prevention material or adopts protective material to keep apart it, prevents to shut down after the gas circuit safety problem appears.
The status of each battery 113 is indicated by an indicator light (the normal status is a green flashing light), and the status of the battery 113 and the position of the battery 113 can be identified manually and rapidly.
The equipment can ensure that people are not damaged by heating and scalding, mechanical action of the equipment and the like in the operation process.
The device has a corresponding sound-light alarm function, and the alarm is stopped or the device is manually stopped after the device is recovered to be normal.
Has an emergency automatic and manual stop mechanism.
The smoke sensor is arranged on the equipment, and when smoke is generated after the battery 113 has a bad fault, the smoke sensor can give an alarm to prompt and corresponds to a corresponding processing mechanism.
The safety grating is attached to the material loading and unloading position of the equipment, and when a person is detected, the equipment automatically stops, so that accidental injury accidents and the like can be prevented.
It should be noted that, for simplicity of description, the method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the illustrated order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments of the present invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the utility model.
Referring to fig. 12, a flowchart illustrating steps of an embodiment of a method for aging a battery under hot pressing according to the present invention is shown, which may specifically include the following steps:
s100, heating and pressurizing the battery 113 through the aging device 1;
s200, performing primary charging and discharging on the battery 113 through the charging and discharging device 2, and monitoring the voltage and the current of the battery 113;
s300, exhausting the battery 113 through the exhaust heat seal device 3;
s400, performing secondary charging and discharging on the battery 113 through the charging and discharging device 2, and monitoring the voltage and the current of the battery 113;
s500, when the voltage or/and the current of the battery 113 is abnormal in the primary charging and discharging process or/and the secondary charging and discharging process, marking the battery 113 as an NG battery 113.
In one embodiment of the present application, the battery 113 is evacuated three times by the exhaust heat seal device 3; the step of exhausting the battery 113 through the exhaust heat seal device 3 includes:
a preset position of piercing the battery 113 by the piercing part;
evacuating the battery 113 through the evacuation section;
the predetermined position of the battery 113 is heat-sealed by the heat-sealing portion.
In a concrete realization, put into after the manual work is got the material battery 113 in the ageing anchor clamps, it is right when battery 113 pushes down, judge through spacing testing result battery 113's spacing situation, start to push down the required pressure of regulation in advance after confirming that spacing situation is good, compress tightly utmost point ear position department simultaneously, begin to carry out constant temperature heating to battery 113 after accomplishing, and detect battery 113 surface temperature simultaneously, every battery 113 carries out open circuit voltage current detection simultaneously, if the unusual intensification of bad battery 113 appears or even smog etc. then automatic alarm, stop the pressurization heating at this position battery 113 and stop the charge-discharge detection to adopt manipulator 31 to take out this battery 113 and put into safe position.
In the aging process of the battery 113, the edge position of the air bag of the battery 113 is punctured and then exhausted, and then heat sealing is carried out, wherein the process can be carried out in a circulating mode, and the circulating times are 1-3. The perforation, air exhaust and heat sealing positions are not repeated, and each displacement is about 5 mm-10 mm.
After the aging process is finished, the process parameters (including pressure, temperature and time) of the aging system are displayed and recorded, and the charging and discharging device 2 is matched with the aging system to perform constant-temperature and constant-pressure charging and discharging tests in the aging process, and mainly has the functions of temperature control, constant-voltage control, current control, voltage control, battery 113 performance screening and the like.
The aging system can simultaneously perform aging, charge and discharge detection and exhaust heat sealing on 200 batteries 113.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the utility model.
Finally, it should also be 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 terminal 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 terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The above detailed description is provided for the battery hot-pressing aging system and method provided by the present invention, and the principle and the implementation of the present invention are explained by applying specific examples, and the description of the above examples is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
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