Drying unit is used in a kind of production of positive electrode plate and negative electrode plate of lithium ion battery
Technical field
The present invention relates to lithium ion battery production fields, and in particular to a kind of positive electrode plate and negative electrode plate of lithium ion battery production drying
Device.
Background technique
Lithium ion battery is a kind of secondary cell (rechargeable battery), it relies primarily on lithium ion and moves between a positive electrode and a negative electrode
It moves and carrys out work.In charge and discharge process, Li+ insertion and deintercalation back and forth between two electrodes: when charging, Li+ from positive deintercalation,
It is embedded in cathode by electrolyte, cathode is in lithium-rich state;It is then opposite when electric discharge.
The production technology of lithium battery is more complicated, and main production process covers the stirring coating stage of electrode fabrication
The winding fluid injection stage (middle section) of (leading portion), battery core synthesis and the packaging detection stage (back segment) of chemical conversion encapsulation.
Currently, in lithium battery front process, when pole piece needs to first pass through drying box pair after coating machine smears slurry
The slurry of pole piece is dried, the winding fluid injection stage then synthesized using battery core of being allowed for access after roll squeezer roll-in,
Original pole piece is needed to take a long time in drying box and could be dried, and roll-in operation, therefore entire lithium are also passed through after drying
Battery leading portion stirring coating process process takes a long time, in addition, the drying box dried to pole piece generally uses hot-air seasoning
Machine provides hot wind, also or carries out infrared heating using infrared heater and dries, and regardless of which kind of mode used, is dried to entire
All areas carry out drying heating inside dry case, and energy consumption is higher.
Summary of the invention
The object of the invention is that providing a kind of positive electrode plate and negative electrode plate of lithium ion battery production use to solve the above-mentioned problems
Drying unit is taken a long time with the lithium battery leading portion stirring coating process process for solving traditional in the prior art, drying heating energy
Consume the problems such as higher.Preferred technical solution can be realized drying and roll press two in many technical solutions provided by the invention
It is one, not only shortens processing step, also saves the production time, and energy consumption is lower, energy conservation and environmental protection, the technologies such as practicability is good
Effect, elaboration as detailed below.
To achieve the above object, the present invention provides following technical schemes:
A kind of positive electrode plate and negative electrode plate of lithium ion battery production drying unit provided by the invention, including drying box and setting are in institute
The through hole in drying box both ends of the surface is stated, pole piece is plugged in two through holes, the pole piece is upper in the drying box
Lower both ends are provided with extrusion cylinder, and the extrusion cylinder is set in shaft by support fixed link fixation, the both ends of the shaft point
The front and back of the drying box is not stretched out and is fixedly connected respectively with gear and installing ring, and the drying box side is provided with
Driving motor, the driving motor are connected by tooth band with the gear;Be fixedly installed with outside the installing ring it is multiple by
Electric block is provided with and the conduction brush being closely slidably connected by electric block, the conduction between the installing ring and the pole piece
Brush side is fixedly connected with conductive mounting bar, and upper and lower two conductive mounting bars are connected by compression conductive spring, institute
It states the drying box back side and is provided with the battery being electrically connected with the conductive mounting bar;
Junction of the drying box on the front and back with the shaft of the pole piece lower end is provided with sliding slot, described
The roller end of pole piece lower end is equipped with security strip, and the security strip lower end is connected with Electrohydraulic push rod, described electro-hydraulic
Be provided with displacement sensor on push rod, the drying box front be provided with display screen and with the display screen, the displacement sensing
The processor of device electrical connection;
Quantity and the multiple bar shaped infrared heaters equal by electric number of blocks are inlaid on the extruding drum outer wall, often
Bar shaped infrared heater described in root is electrically connected with described in one by electric block by insulated conductor.
Preferably, the extrusion cylinder quantity has upper and lower ends that are multiple, and being evenly distributed on the pole piece;
Wherein, each extrusion cylinder passes through the shaft and is mounted on the drying box on the front and back;
Wherein, the both ends of the every shaft are mounted on the gear and the installing ring;
Wherein, multiple gears positioned at described pole piece the same side are connected by the tooth band;
Wherein, multiple conduction brush positioned at multiple installing ring lower ends of described pole piece the same side pass through an institute
Conductive mounting bar is stated to be fixedly connected.
Preferably, multiple bar shaped infrared heaters and it is described by electric block centered on the shaft be in center pair
Claim distribution;
Wherein, when a bar shaped infrared heater is rotated to the minimum point of the extrusion cylinder, the installing ring
Minimum point at also have one described in by electric block.
Preferably, the length of the conduction brush is greater than the length by electric block.
Preferably, the Electrohydraulic push rod quantity has multiple, it is evenly distributed on the security strip lower end;
Wherein, the fuselage of the Electrohydraulic push rod is fixedly mounted on the drying box back side vertically;
Wherein, the push rod cup of the Electrohydraulic push rod is fixedly connected with the security strip.
Preferably, the outer surface of the bar shaped infrared heater is cambered surface;
Wherein, the radius of the cambered surface is equal with the half of the outer diameter of the extrusion cylinder.
Above-mentioned a kind of positive electrode plate and negative electrode plate of lithium ion battery production drying unit, in use, first according to the thickness of the pole piece
(specific method of adjustment is to control the Electrohydraulic push rod rotation to push the fixed plate to the spacing of extrusion cylinder described in adjustment two rows
Item moves up and down the spacing that extrusion cylinder described in two rows can be adjusted), after adjusting to spacing, connect the conductive mounting
The circuit connection of bar, at this point, by electricity and being connected the extrusion cylinder minimum point by electric block with described in the conduction brush sliding contact
The circuit connection of the bar shaped infrared heater at place, the bar shaped infrared heater energization launch outward infrared ray, later, will
The pole piece is passed into the drying box from the through hole on the left of the drying box and from extruding described in two rows
It is passed through between cylinder, the through hole of the last pole piece on the right side of the drying box is stretched out, due to there was only the installing ring most
Described at low spot can be in contact and conductive by electric block with the conduction brush, therefore also only be located at the extrusion cylinder minimum point
The bar shaped infrared heater at place can be powered on, and other all described bar shaped infrared heatings on the extrusion cylinder
Device is then in off-position, compared to the design side that all areas inside entire drying box are carried out with drying heating of traditional drying box
Formula, the design method of only one this bar shaped infrared heater electrified regulation obviously compare power saving, energy conservation and environmental protection, and position
The bar shaped infrared heater at the extrusion cylinder minimum point is just also in contact with the pole piece, therefore can be to described
Pole piece carries out infrared heating, removes the moisture in the pole piece slurry, while the pole piece is also by described in two rows
The extruding of extrusion cylinder, thus realize drying, extrusion process is combined into one, and not only shortens processing step, also save production
Time, practicability are good.
Beneficial effect is: a kind of positive electrode plate and negative electrode plate of lithium ion battery production of the present invention can be realized with drying unit
Drying and roll-in are combined into one, processing step is not only shortened, also saves the production time, and energy consumption is lower, energy-saving ring
It protects, practicability is good.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is main view of the invention;
Fig. 2 is the internal structure chart of Fig. 1 of the invention;
Fig. 3 is rearview of the invention;
Fig. 4 is the left view of extrusion cylinder of the invention;
Fig. 5 is the rearview of extrusion cylinder of the invention;
Fig. 6 is the cross-sectional view of Fig. 4 of the invention.
The reference numerals are as follows:
1, drying box;2, pole piece;3, extrusion cylinder;4, shaft;5, sliding slot;6, gear;7, tooth band;8, driving motor;9, solid
Fixed board item;10, Electrohydraulic push rod;11, through hole;12, battery;13, conductive mounting bar;14, compression conductive spring;15, bar shaped is red
Outer heating device;16, installing ring;17, by electric block;18, conduction brush;19, insulated conductor;20, fixed link is supported;21, displacement sensing
Device;22, display screen;23, processor.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical solution of the present invention will be carried out below
Detailed description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work
Other embodiment belongs to the range that the present invention is protected.
Referring to shown in Fig. 1-Fig. 6, a kind of positive electrode plate and negative electrode plate of lithium ion battery production drying unit provided by the invention, including
Drying box 1 and the through hole 11 being arranged in 1 both ends of the surface of drying box, through hole 11 passes through for pole piece 2, in two through holes 11
It is plugged with pole piece 2, the upper and lower ends of 1 interior pole 2 of drying box are provided with extrusion cylinder 3, and extrusion cylinder 3 makes pole for squeezing pole piece 2
The coating thin layer on 2 surface of piece is fine and close, and extrusion cylinder 3 is set in shaft 4 by the support fixation of fixed link 20,4 both ends of shaft difference
It stretches out the front and back of drying box 1 and is fixedly connected respectively with gear 6 and installing ring 16,1 side of drying box is provided with driving
Motor 8, for driving extrusion cylinder 3 to rotate, driving motor 8 is connected by tooth band 7 with gear 6 driving motor 8;Outside installing ring 16
Portion be fixedly installed with it is multiple by electric block 17, by electric block 17 for contact the circuit of connection bar shaped infrared heater 15 with conduction brush 18
Connection, be provided between installing ring 16 and pole piece 2 with the conduction brush 18 that is closely slidably connected by electric block 17,18 side of conduction brush with
Conductive mounting bar 13 is fixedly connected, and upper and lower two conductive mounting bars 13 are by 14 elastic connection of compression conductive spring, due to pole piece 2
The conductive mounting bar 13 of lower end can slide in sliding slot 5 with shaft 4, therefore, between upper and lower two conductive mounting bars 13
Distance be variation, it is therefore desirable to be electrically connected with compression conductive spring 14,1 back side of drying box is provided with and conductive mounting
The battery 12 that bar 13 is electrically connected;
Drying box 1 is provided with sliding slot 5 with the junction of the shaft 4 of 2 lower end of pole piece on the front and back, and sliding slot 5 is used for down
Layer extrusion cylinder 3 moves up and down, and the distance between adjustment upper layer and lower layer extrusion cylinder 3 meets drying and the roller of the pole piece 2 of various thickness
Pressure demand, 4 end of shaft of 2 lower end of pole piece are equipped with security strip 9, and security strip 9 is used to multiple shafts 4 being mounted on one
It rises, facilitates Electrohydraulic push rod 10 that it is pushed to move up and down, 9 lower end of security strip is connected with Electrohydraulic push rod 10, sets on Electrohydraulic push rod 10
It is equipped with displacement sensor 21, the place that 1 front of drying box is provided with display screen 22 and is electrically connected with display screen 22, displacement sensor 21
Device 23 is managed, displacement sensor 21 is used to detect the push rod displacement of Electrohydraulic push rod 10, i.e., the displacement of security strip 9 and will test data
Processor 23 is passed to, is shown after the processing of processor 23 by display screen 22 and is referred to for operator;
Be inlaid on 3 outer wall of extrusion cylinder quantity with by the equal multiple bar shaped infrared heaters 15 of electric 17 quantity of block, every
Bar shaped infrared heater 15 is electrically connected with one by electric block 17 by insulated conductor 19.
As optional embodiment, 3 quantity of extrusion cylinder has upper and lower ends that are multiple, and being evenly distributed on pole piece 2, multiple
Extrusion cylinder 3 can guarantee the compression of pole piece 2, densification;
Wherein, each extrusion cylinder 3 is mounted on drying box 1 on the front and back by a shaft 4;
Wherein, the both ends of every shaft 4 are mounted on gear 6 and installing ring 16;
Wherein, multiple gears 6 positioned at 2 the same side of pole piece are connected by tooth band 7, are designed in this way, are passed through driving motor 8
Rotation can drive multiple gears 6 of the same side to rotate synchronously;
Wherein, multiple conduction brush 18 positioned at 16 lower end of multiple installing rings of 2 the same side of pole piece pass through a conductive mounting
Bar 13 is fixedly connected, in this way, can be the power supply of multiple conduction brush 18 by a conductive mounting bar 13.
It multiple bar shaped infrared heaters 15 and is centrosymmetric centered on shaft 4 distribution by electric block 17;
When wherein, at a rotation to the minimum point of extrusion cylinder 3 of bar shaped infrared heater 15, the minimum point of installing ring 16
Place also has one by electric block 17, designs in this way, guarantees that the rotation of bar shaped infrared heater 15 to the minimum point of extrusion cylinder 3 can just be powered
Work.
The length of conduction brush 18 is greater than the length by electric block 17, designs in this way, so that the rotation of bar shaped infrared heater 15 is extremely
It soon reaches minimum point and leaves minimum point and just start to be in energized state, therefore bar shaped infrared heater between rotation rising
15 conduction time is longer, and bar shaped infrared heater 15 is enabled preferably to heat pole piece 2 when being in contact with pole piece 2.
10 quantity of Electrohydraulic push rod has multiple, is evenly distributed on 9 lower end of security strip;
Wherein, the fuselage of Electrohydraulic push rod 10 is fixedly mounted on 1 back side of drying box vertically;
Wherein, the push rod cup of Electrohydraulic push rod 10 is fixedly connected with security strip 9.
The outer surface of bar shaped infrared heater 15 is cambered surface;
Wherein, the half of outer diameter of radius with extrusion cylinder 3 of cambered surface is equal, designs in this way, it is infrared to can effectively avoid bar shaped
Heater 15 forms impression on the slurry on 2 surface of pole piece.
Above-mentioned a kind of positive electrode plate and negative electrode plate of lithium ion battery production drying unit, in use, first being adjusted according to the thickness of pole piece 2
(specific method of adjustment is that the control rotation of Electrohydraulic push rod 10 pushes security strip 9 to move up and down i.e. to the spacing of two rows extrusion cylinder 3
The spacing of adjustable two rows extrusion cylinder 3), after spacing adjustment, the circuit connection of connection conductive mounting bar 13, this
When, by electricity and bar shaped infrared heater 15 at 3 minimum point of extrusion cylinder is connected by electric block 17 with 18 sliding contact of conduction brush
Circuit connection, the energization of bar shaped infrared heater 15 launch outward infrared ray, later, by through hole of the pole piece 2 on the left of drying box 1
11 are passed into drying box 1 and pass through between two rows extrusion cylinder 3, through hole of the last pole piece 2 from 1 right side of drying box
11 stretch out, conductive due to there was only can be in contact with conduction brush 18 at 16 minimum point of installing ring by electric block 17, also
There is the bar shaped infrared heater 15 being located at 3 minimum point of extrusion cylinder that can be powered on, and other all items on extrusion cylinder 3
Shape infrared heater 15 is then in off-position, compared to drying to entire 1 inside all areas of drying box for traditional drying box 1
The design method of dry heating, the design method of only one this 15 electrified regulation of bar shaped infrared heater obviously compare power saving,
Energy conservation and environmental protection, and the bar shaped infrared heater 15 being located at 3 minimum point of extrusion cylinder is just also in contact with pole piece 2, therefore can
Infrared heating is carried out to pole piece 2, removes the moisture in 2 surface size of pole piece, while pole piece 2 is also by two rows extrusion cylinder 3
Extruding, to realize drying, extrusion process is combined into one, and not only shortens processing step, also saves the production time, real
It is good with property.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.