CN207993953U - A kind of full lug type lithium battery of high magnification - Google Patents
A kind of full lug type lithium battery of high magnification Download PDFInfo
- Publication number
- CN207993953U CN207993953U CN201820185838.6U CN201820185838U CN207993953U CN 207993953 U CN207993953 U CN 207993953U CN 201820185838 U CN201820185838 U CN 201820185838U CN 207993953 U CN207993953 U CN 207993953U
- Authority
- CN
- China
- Prior art keywords
- plate
- positive
- cathode
- full lug
- pole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
Landscapes
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model is related to a kind of full lug type lithium battery of high magnification, the lithium battery includes the hollow cell shell of both ends open, the battery core being arranged in battery case and the upper cover plate component and lower cover component that are separately positioned on both ends open sealing of the battery case both ends by battery case；Upper cover plate component includes Positive Poles, and lower cover component includes cathode pole；Battery core is sequential volume multilaminate coiled structure made of according to diaphragm, positive plate, diaphragm, negative plate, diaphragm；One end of positive plate is the positive plate power accumulating portion for being covered with positive electrode, and the other end is the positive plate blank parts of blank；One end of negative plate is the negative plate power accumulating portion for being covered with negative material, and the other end is the negative plate blank parts of blank；Positive plate blank parts and negative plate blank parts are located at the both ends of battery core, and are respectively welded and form the full lug of anode and the full lug of cathode together, and the full lug of anode and the full lug of cathode are connect with Positive Poles and cathode pole respectively.
Description
Technical field
The utility model is related to technical field of lithium batteries, more specifically to a kind of full lug type lithium battery of high magnification.
Background technology
Energy crisis, problem of environmental pollution are particularly paid close attention to the development of society, the world is various, the exploration to new energy
It is also constant, new energy industry is caused to flourish, wherein lithium battery industry is by its energy density height, power density
The characteristics of height, good cycle, is paid close attention to by people, in electronic (mixed dynamic) automobile, portable power, energy-accumulating power station and power grid, intelligence
The fields such as energy household all have a wide range of applications.In recent years, with increasingly perfect, pure electric vehicle or the mixing of electric vehicle engineering
Power vehicle plays an increasingly important role in people's lives, and people also propose automobile power motorized higher
It is required that this growing material spirit demand brings huge business opportunity and challenge to enterprise.
Currently, single lithium battery mainly has cylindrical type, rectangular and Soft Roll, the method taken in cell fabrication processes main
There is stacked and takeup type, stacked is usually to divide sanction and then lamination again after being die cut, and production efficiency is relatively low, consistent precision is low, again
Rate is relatively low with cycle performance；Takeup type production efficiency is higher, but the battery core of general non-die-cutting process all takes rear process to weld
The mode of lug is drained, and is not well positioned to meet the high rate capability of power battery, it is difficult to fully meet pure electricity or mixed dynamic
Automobile market high magnification demand.
Wherein, rectangular cell is mostly monopole ear technique and multi pole ears technique, and monopole ear technique is pole piece coiling before by pole
Ear is connect by way of ultrasonic welding with pole piece, and then is wound into lug drainage of the battery by welding；Multi pole ears technique is
Pole piece is die cut, two kinds can be divided to after the completion of cross cutting：First, carrying out lamination after point sanction, second is that directly winding, two kinds final
All be using pole piece end as lug carry out multi pole ears super weldering as drain terminal.Since the positive and negative anodes of monopole ear are same
Side, current carrying area is small, causes overcurrent capability poor, and high rate performance is poor, and because in addition monopole ear technique needs individually in pole piece
Upper soldering polar ear, technique is cumbersome, and production efficiency is relatively low.Although multi pole ears high rate performance exists compared with monopole ear height, its positive and negative anodes
The same side, current carrying area is small, and overcurrent capability is poor, and high rate performance also not enough meets the high magnification demand of electric vehicle；And multipole
Ear technique needs die cutting procedure, and production process is more, equipment investment is big, and complex process is less efficient.
Utility model content
The technical problem to be solved by the present invention is to for the drawbacks described above of the prior art, provide a kind of high magnification
Full lug type lithium battery.
Technical solution adopted by the utility model to solve its technical problems is：Construct a kind of full lug type lithium electricity of high magnification
Pond, including the hollow cell shell of both ends open, the battery core that is arranged in the battery case and it is separately positioned on the electricity
The upper cover plate component and lower cover component that pond shell both ends seal the both ends open of the battery case；
The upper cover plate component includes Positive Poles, and the lower cover component includes cathode pole；
The battery core is sequential volume multilaminate coiled knot made of according to diaphragm, positive plate, diaphragm, negative plate, diaphragm
Structure；
One end of the positive plate is the positive plate power accumulating portion for being covered with positive electrode, and the other end is that the positive plate of blank is empty
White part；One end of the negative plate is the negative plate power accumulating portion for being covered with negative material, and the other end is that the negative plate of blank is empty
White part；
The positive plate blank parts and negative plate blank parts are located at the both ends of the battery core, and the positive plate is empty
White to be partly welded together to form the full lug of anode, the negative plate blank parts are welded together to form the full lug of cathode, institute
It states positive full lug and the full lug of cathode is connect with the Positive Poles and the cathode pole respectively.
Preferably, the upper cover plate component further includes the upper cover plate equipped with liquid injection hole, and the upper cover plate component passes through described
Upper cover plate seals one end of the shell；The upper cover plate is equipped with the through-hole worn for the Positive Poles, the anode pole
It is engaged by insulation resin between column and the upper cover plate；
The lower cover component further includes the lower cover equipped with explosion-proof valve, and the lower cover component will by the lower cover
One end of the shell seals；The lower cover is equipped with the through-hole worn for the cathode pole, the cathode pole with it is described
It is engaged by insulation resin between lower cover.
Preferably, the battery case is aluminum shell, and the upper cover plate and the lower cover are aluminium sheet, the upper cover
Plate and the lower cover respectively with the both ends welded seal of the battery case.
Preferably, the liquid injection hole and the explosion-proof valve are located at the same side of the battery case.
Preferably, the positive plate includes positive plate substrate, and the positive electrode is covered in the one of the positive plate substrate
End forms the positive plate power accumulating portion, and the other end of the anode plate substrate forms the positive plate blank parts；
The negative plate includes cathode plate substrate, and one end that the negative material is covered in the cathode plate substrate forms institute
Negative plate power accumulating portion is stated, the other end of the cathode plate substrate forms the negative plate blank parts.
Preferably, the positive plate substrate is aluminium foil, and the full lug of anode is welded with the Positive Poles；The cathode
Plate substrate is copper foil, and the full lug of cathode is welded with the cathode pole.
Preferably, the Positive Poles are aluminum pole；The cathode pole is Copper-Aluminum compound pole, the cathode pole
One end be copper end, the other end is aluminium end, and the copper end is towards the enclosure interior, and the aluminium end is towards the hull outside.
Preferably, the width of the full lug of the anode is less than or equal to the width of the Positive Poles, the full pole of cathode
The width of ear is less than or equal to the width of the cathode pole.
Preferably, the width of the full lug of the anode is smaller 5-8mm than the width of the Positive Poles, the full lug of the cathode
Width it is smaller 5-8mm than the width of the cathode pole.
Preferably, the overall width of the positive plate is 105mm, and the width of the positive plate blank parts is 15mm；It is described
Diaphragm overall width is 95mm；The negative plate overall width is 105mm, and the width of the negative plate blank parts is 15mm.
The utility model additionally provides a kind of preparation method of the full lug type lithium battery of high magnification, is used to prepare above-mentioned height
The full lug type lithium battery of multiplying power, the preparation method comprises the following steps：
S1, in positive plate substrate one end of positive plate, setting positive electrode material layer forms positive plate power accumulating portion, and the other end stays
Blank forms positive plate blank parts；
S2, in cathode plate substrate one end of negative plate, setting negative electrode material layer forms negative plate power accumulating portion, and the other end stays
Blank forms negative plate blank parts；
S3, by the positive plate, the negative plate and diaphragm according to diaphragm, positive plate, diaphragm, negative plate, diaphragm it is suitable
Sequence is wound to form battery battery core, and the positive plate blank parts at the battery core both ends and negative plate blank parts are distinguished
Welding forms the full lug of anode and the full lug of cathode；
S4, the cathode pole of lower cover component is connect with the full lug of the cathode, the battery core is put into battery case
It is interior, it is used in combination the lower cover component to seal one end of the shell；
The Positive Poles of upper cover plate component are connect with the full lug of the anode, are used in combination the upper cover plate component by the electricity
The other end of pond shell seals；
S5, assembled battery is toasted, electrolyte is injected when moisture reaches preset standard value, after completing sealing
Chemical conversion activation is carried out again, forms full lug type lithium battery.
Preferably, the step S1 includes：
S11, the raw material of positive electrode material layer is uniformly mixed, positive-active slurry is made；
S12, one end that the anode sizing agent is uniformly coated to the positive plate substrate according to default surface density, form institute
State positive plate power accumulating portion；The other end of the anode plate substrate blanks, and forms the positive plate blank parts；
The positive plate is obtained after S13, drying；
The step S2 includes：
S21, the raw material of negative electrode material layer is uniformly mixed, negative electrode active slurry is made；
S22, one end that the negative electrode slurry is uniformly coated to the cathode plate substrate according to default surface density form institute
State negative plate power accumulating portion；The other end of the cathode plate substrate blanks, and forms the negative plate blank parts；
The negative plate is obtained after S23, drying.
Preferably, the upper cover plate component includes the upper cover plate equipped with liquid injection hole, and the upper cover plate, which is equipped with, supplies the anode
The through-hole that pole is worn；The lower cover component includes lower cover, and the lower cover is equipped with to be led to for what the cathode pole was worn
Hole；
It is further comprising the steps of before the step S1：
S0, the Positive Poles are threaded through in the through-hole of the upper cover plate, and using resin by the Positive Poles with
The upper cover plate insulation is bonded together；
The cathode pole is threaded through in the through-hole of the lower cover, and using resin by the cathode pole with it is described
Lower cover insulation is bonded together.
The full lug type lithium battery of high magnification for implementing the utility model, has the advantages that：The height of the utility model
By setting up positive full lug, the full lug of cathode separately battery core both sides, current carrying area can fully be put the full lug type lithium battery of multiplying power
Greatly, overcurrent capability is strong, good rate capability.It need not be in addition single when the preparation of the full lug type lithium battery of the utility model high magnification
The solely soldering polar ear on pole piece, production process is few, simple for process, improves production efficiency.
Description of the drawings
Below in conjunction with accompanying drawings and embodiments, the utility model is described in further detail, in attached drawing：
Fig. 1 is the decomposition diagram of the full lug type lithium battery of the utility model high magnification；
Fig. 2 is the sectional view of the full lug type lithium battery of the utility model high magnification；
Fig. 3 is the structural schematic diagram of the upper cover plate component in the full lug type lithium battery of the utility model high magnification；
Fig. 4 is the structural schematic diagram of the positive plate of the full lug type lithium battery of the utility model high magnification；
Fig. 5 is the structural schematic diagram of the negative plate of the full lug type lithium battery of the utility model high magnification；
Partial schematic diagram when Fig. 6 is the electric core winding of the full lug type lithium battery of the utility model high magnification；
Fig. 7 is the structural schematic diagram of the battery core of the full lug type lithium battery of the utility model high magnification；
Fig. 8 is that the battery core of the full lug type lithium battery of the utility model high magnification cuts the structural schematic diagram after chamfering；
The flow chart of the preparation method of the full lug type lithium battery of Fig. 9 the utility model high magnifications.
Specific implementation mode
For a clearer understanding of the technical features, objectives and effects of the utility model, now control attached drawing is detailed
Illustrate specific embodiment of the present utility model.
The utility model discloses a kind of full lug type lithium batteries of high magnification, include the hollow cell shell of both ends open
10, battery core 20 in battery case 10 is set and be separately positioned on 10 both ends of battery case by the both ends of battery case 10
Be open the upper cover plate component 30 sealed and lower cover component 40；Upper cover plate component 30 includes Positive Poles 31, lower cover component 40
Including cathode pole 41；Battery core 20 be according to diaphragm 23, positive plate 21, diaphragm 23, negative plate 22, diaphragm 23 sequential volume around and
At multilaminate coiled structure；One end of positive plate 21 is the positive plate power accumulating portion 211 for being covered with positive electrode, and the other end is blank
Positive plate blank parts 212；One end of negative plate 22 is the negative plate power accumulating portion 221 for being covered with negative material, and the other end is
The negative plate blank parts 222 of blank；After the completion of battery core 20 is wound, positive plate blank parts 212 and negative plate blank parts 222
The both ends of battery core 20 are located at, positive plate blank parts 212 are welded together to form positive full lug 201, negative plate blank
Part 222 is welded together to form the full lug 202 of cathode, the full lug 201 of anode and the full lug of cathode 202 respectively with Positive Poles
31 and cathode pole 41 connect.Preferably, the full lug 201 of anode is connected with the Positive Poles 31 by way of ultrasonic bonding
It connects, the full lug of cathode 202 is connect with cathode pole 41 by way of ultrasonic bonding.
The hollow type shell of battery case 10, for housing battery core 20.In the present embodiment, battery case 10 uses aluminum type
Aluminum hull made of material, the trade mark of aluminium are 3003, specifically can be used that aluminium sheet is stretched, cut, surface cleaning forms, and the thickness of aluminium sheet is
0.5mm.The both ends of battery case 10 are open, and both ends open is drawn convenient for battery core 20, passes through upper cover plate component 30 and lower cover
Component 40 respectively seals the opening at 10 both ends of battery case.
The lithium battery of the utility model meets high current handling capacity, realizes the high rate performance requirement of battery, cover plate assembly
Structure it is particularly important.As shown in Figure 1, the cover plate assembly is divided into 40 two parts of upper cover plate component 30 and lower cover component, it will
Battery plus-negative plate sets up both sides separately, expands pole water conservancy diversion area, enhances overcurrent capability, good rate capability.Upper cover plate component 30, under
Cover plate assembly 40 is formed using metal-resin combined process, and the resin 50 is thermoplastic resin.Preferably, the thermoplastic
Property resin be high temperature resistant, the corrosion of ageing-resistant, electrolyte resistance polyphenyl thioether material.
As shown in Figure 1, Figure 2 or shown in Fig. 3, upper cover plate component 30 further includes the upper cover plate 32 equipped with liquid injection hole 33, upper cover board group
Part 30 is sealed one end of battery case 10 by upper cover plate 32, and liquid injection hole 33 into battery case 10 for injecting electrolyte.
In the present embodiment, the thickness of upper cover plate 32 is 2mm.Upper cover plate 32 is equipped with the through-hole 321 worn for Positive Poles 31, Positive Poles
It is bonded together by the insulation of resin 50 between 31 and upper cover plate 32.Upper cover plate 32 and Positive Poles are engaged using resin 50
31, battery can be made lighter, good airproof performance, and simple production process.Preferably, the equal 80mm of the width of Positive Poles 31.This
In embodiment, upper cover plate 32 is aluminium sheet, which is formed three by the joining technique of metal and resin with Positive Poles 31
One entirety.
As shown in Figure 1 or 2, lower cover component 40 further includes the lower cover 42 equipped with explosion-proof valve 43, lower cover component 40
One end of battery case 10 is sealed by lower cover 42.In the present embodiment, the thickness of lower cover 42 is 2mm.Lower cover 42 is set
There is the through-hole worn for cathode pole 41, is bonded together by the insulation of resin 50 between cathode pole 41 and lower cover 42.It adopts
Lower cover 42 and cathode pole 41 are engaged with resin 50, battery can be made lighter, good airproof performance, and simple production process.
Preferably, the width of cathode pole 41 is 80mm.In the present embodiment, lower cover 42 is aluminium sheet, and the aluminium sheet is same with cathode pole 41
Sample is also that three is formed an entirety by the joining technique of metal and resin.
Preferably, battery case 10 is aluminum shell, and upper cover plate 32 and lower cover 42 are aluminium sheet, upper cover plate 32 and lower cover
Plate 42 respectively with the both ends welded seal of battery case 10, i.e., the both ends of battery case 10 respectively with upper cover plate 32 and lower cover 42
Welded seal.Liquid injection hole 33 and explosion-proof valve 43 are located at the same side of battery case 10, ensure that larger pole width dimensions, carry
Mistake current-carrying capability under high high magnification.
Battery core 20 is in the cavity of battery case 10, and battery core 20 is multilaminate coiled structure.Specifically, battery core 20 be according to
Sequential volume multilaminate coiled structure made of of diaphragm 23, positive plate 21, diaphragm 23, negative plate 22, diaphragm 23, as shown in Figure 6.
Intermediate diaphragm 23 plays the function of ion transmission, and electronics is circulated by outside line, lithium ion by medial septum 23 into
Row circulation, realizes the charging/discharging function of battery.Preferably, the overall width of positive plate 21 is 105mm, positive plate blank parts
212 width is 15mm；23 overall width of diaphragm is 95mm；22 overall width of negative plate is 105mm, negative plate blank parts 222
Width is 15mm.
As shown in figure 4, positive plate 21 includes positive plate substrate, one end that positive electrode is covered in positive plate substrate is formed just
The other end of pole piece power accumulating portion 211, positive plate substrate forms positive plate blank parts 212.Preferably, the positive plate blank
The width of part 212 is 15mm, and the positive plate blank parts 212 are welded together to form described by way of ultrasonic welding
Positive full lug 201.
As shown in figure 5, negative plate 22 include cathode plate substrate, negative material be covered in cathode plate substrate one end formed it is negative
The other end of pole piece power accumulating portion 221, cathode plate substrate forms negative plate blank parts 222.Preferably, the negative plate blank
The width of part 222 is 15mm, and the negative plate blank parts 222 are welded together to form described by way of ultrasonic welding
The full lug of cathode 202.Specifically, when winding battery core 20, positive power accumulating portion is overlapped with cathode power accumulating portion, positive blank parts
It is located at the different ends of battery core 20 with cathode blank parts.
Preferably, Positive Poles 31 are aluminum pole；Cathode pole 41 is Copper-Aluminum compound pole, one end of cathode pole 41
For copper end, the other end is aluminium end, and copper end is towards inside battery case 10, and aluminium end is towards outside battery case 10；Positive plate substrate
For aluminium foil, the full lug 201 of anode is welded with Positive Poles 31；Cathode plate substrate is copper foil, and two ends of battery core 20 are respectively
Optical aluminum foil, the light copper foil of inactive substance, multilayer optical aluminum foil is welded together to form positive full lug 201 (as shown in Figure 7), more
Layer light copper foil is welded together to form the full lug 202 (as shown in Figure 7) of cathode, to the full lug of anode 201 and is born after the completion of welding
The tip of left and right two of extremely full lug 202 carries out cutting chamfered (as shown in Figure 8), the full lug 202 of cathode and cathode pole
41 welding.Preferably, the side that the Positive Poles 31 of the full lug 201 of the anode of battery core 20 and upper cover plate component 30 pass through ultrasonic welding
Formula links together, the side that the full lug 202 of cathode of battery core 20 and the cathode pole 41 of lower cover component 40 pass through ultrasonic welding
Formula links together, and for two-part welding weldering print as possible with pole equivalent width, guarantee is good to cross current-carrying capability, promotes electricity
The high rate performance in pond.In the present embodiment, Positive Poles 31 are aluminium material pole, and the aluminium trade mark is 1060, and cathode pole 41 is copper aluminium
Compound pole, together by friction welding, Positive Poles 31 and 41 width of cathode pole are 80mm to copper aluminium, are effectively met
The handling capacity of high current.
Preferably, the width of the full lug of anode 201 is less than or equal to the width of Positive Poles 31, the full lug of cathode 202
Width is less than or equal to the width of cathode pole 41.In the preferred embodiment of the utility model, the width ratio of positive full lug 201
The width of the small 5-8mm of width of Positive Poles 31, the full lug of cathode 202 are smaller 5-8mm than the width of cathode pole 41, and battery core 20 is such as
Shown in Fig. 7.
The utility model additionally provides a kind of preparation method of the full lug type lithium battery of high magnification, is used to prepare above-mentioned height
The full lug type lithium battery of multiplying power.As shown in figure 9, the preparation method includes the following steps：
S1, in positive plate substrate one end of positive plate 21, setting positive electrode material layer forms positive plate power accumulating portion 211, another
End blanks to form positive plate blank parts 212.Preferably, the step S1 includes：
S11, the raw material of positive electrode material layer is uniformly mixed, positive-active slurry is made；
S12, one end that anode sizing agent is uniformly coated to positive plate substrate according to default surface density form positive plate storing up electricity
Part 211；The other end of positive plate substrate blanks, and forms positive plate blank parts 212；
Positive plate 21 is obtained after S13, drying.
Specifically, the raw material of positive electrode material layer includes positive active material, conductive agent, bonding agent and solvent, the step
S1 includes：Positive active material, conductive agent, bonding agent, solvent are mixed and are stirred, anode sizing agent is made；
By the anode sizing agent to preset surface density according to the two sides for being uniformly coated to positive plate substrate one end in a manner of shown in Fig. 4, just
The other end of pole piece base material is left a blank the full lug 201 of anode in vain, and positive plate 21 is made after drying.It is previously mentioned in wherein step S1
Default surface density is：Single side surface density=16.49 ± 0.33mg.cm2, two-sided surface density=32.98 ± 0.66mg.cm2。
In the preferred embodiment of the utility model, the positive electrode active materials in the raw material of the positive electrode material layer are ferric phosphate
Lithium, conductive agent are SP (carbon black conductive agent), and binder is PVDF (Kynoar), and solvent is NMP (N-Methyl pyrrolidone),
And it is mixed according to preset ratio.
S2, in cathode plate substrate one end of negative plate 22, setting negative electrode material layer forms negative plate power accumulating portion 221, another
End blanks to form negative plate blank parts 222.Preferably, the step S2 includes：
S21, the raw material of negative electrode material layer is uniformly mixed, negative electrode active slurry is made；
S22, one end that negative electrode slurry is uniformly coated to cathode plate substrate according to default surface density form negative plate storing up electricity
Part 221；The other end of cathode plate substrate blanks, and forms negative plate blank parts 222；
Negative plate 22 is obtained after S23, drying.
Specifically, the raw material of negative material includes negative electrode active material, conductive agent, bonding agent and solvent, the step S2
Including：Negative electrode active material, conductive agent, bonding agent, solvent are mixed and are stirred, negative electrode slurry is made；It will
The negative electrode slurry is to preset surface density according to the two sides for being uniformly coated to cathode plate substrate one end in a manner of shown in fig. 5, cathode
The other end of plate substrate is left a blank the full lug 202 of cathode in vain, and negative plate 22 is made after drying.It is previously mentioned in wherein step S2 pre-
If surface density is：Single side surface density=6.75 ± 0.13mg.cm2, two-sided surface density=13.50 ± 0.26mg.cm2。
In the preferred embodiment of the utility model, the negative electrode active material in the raw material of the negative electrode material layer is graphite,
Conductive agent is SP (carbon black conductive agent), and binder is CMC (carboxymethyl cellulose) and SBR (butadiene-styrene rubber), and solvent is water, and is pressed
It is mixed according to preset ratio.
S3, by positive plate 21, negative plate 22 and diaphragm 23 according to diaphragm 23, positive plate 21, diaphragm 23, negative plate 22, every
The sequence of film 23 is wound to form battery battery core 20, and by the positive plate blank parts 212 and negative plate at 20 both ends of battery core
Blank parts 222 are respectively welded to form positive full lug 201 and the full lug of cathode 202.
Specifically, as shown in fig. 6, by positive plate 21, negative plate 22, diaphragm 23 according to diaphragm 23, positive plate 21, diaphragm
23, negative plate 22, diaphragm 23 sequence be wound using winding apparatus, formed battery battery core 20, respectively by 20 both ends of battery core
End multilayer positive plate blank parts 212 and negative plate blank parts 222 carry out rubbing and ultrasonic welding forms the full pole of anode
Ear 201 and the full lug 202 of cathode, to the point of left and right two of the full lug 201 of anode and the full lug of cathode 202 after the completion of ultrasonic welding
End carries out cutting chamfered (i.e. corner cut is handled), as shown in Figure 8.Corner cut processing is carried out to the right and left of lug, it is ensured that complete
The width of lug is less than the width of pole, is convenient for the welding of postorder and pole, but in order to ensure certain high current load-carrying properties,
The cropped part of full lug cannot be excessive, therefore the width of the full lug of positive and negative electrode is smaller 5- than the width of positive and negative electrode pole
8mm is preferable.
S4, the full lug of cathode pole 41 and the cathode of lower cover component 40 202 is connect, battery core 20 is put into battery case
In 10, lower cover component 40 is used in combination to seal one end of battery case 10；By the Positive Poles 31 of upper cover plate component 30 and anode
Full lug 201 connects, and cover plate assembly 30 is used in combination to seal the other end of battery case 10.
Specifically, the full lug of the cathode pole 41 of lower cover component 40 and cathode 202 is connected using ultrasonic bonding mode
It is connected together, certain weld strength, tensile strength is kept to be not less than 500N, then battery core 20 is put into battery case 10,
By one end welded seal of the lower cover 42 of lower cover component 40 and battery case 10 by way of laser welding, for example, will under
Cover board 42 is fixed with battery case 10 by special fixture, is welded together the two using continuous laser；It again will be upper
The Positive Poles 31 of cover plate assembly 30 are ultrasonically welded together with positive full lug 201, are kept certain weld strength, are resisted
Tensile strength is not less than 500N, then is welded the upper cover plate 32 of upper cover plate component 30 and battery case 10 by way of laser welding
Other end welded seal, such as upper cover plate 32 and battery case 10 are fixed by special fixture, are swashed using continuous
Light welds together the two.
S5, assembled battery is toasted, electrolyte is injected when moisture reaches preset standard value, after completing sealing
Chemical conversion activation is carried out again, forms full lug type lithium battery.Specifically, battery assembly finishes, pass through what is vacuumized to liquid injection hole 33
Mode carries out negative pressure air-leakage test, and air-tightness can toast assembled battery after passing through, and wait for the water of anode
Divide and injects electrolyte into battery case 10 from the liquid injection hole 33 of upper cover plate 32 when reaching standard value with the moisture of battery cathode, it is complete
At chemical conversion activation is carried out after sealing again, finished battery is formed after partial volume.Wherein, the moisture standards value of anode be≤
The moisture standards value of 300PPM, battery cathode are≤200PPM, and PPM is megabit unit.
Preferably, upper cover plate component 30 includes the upper cover plate 32 equipped with liquid injection hole 33, and upper cover plate 32 is equipped with for Positive Poles
31 through-holes 321 worn；Lower cover component 40 includes lower cover 42, and lower cover 42 is equipped with the through-hole worn for cathode pole 41；
It is further comprising the steps of before the step S1：
S0, Positive Poles 31 are threaded through in the through-hole 321 of upper cover plate 32, and using resin 50 by Positive Poles 31 with it is upper
The insulation of cover board 32 is bonded together；Cathode pole 41 is threaded through in the through-hole of lower cover 42, and uses resin 50 by cathode pole
Column 41 is bonded together with the insulation of lower cover 42.Specifically, the step S0 includes：By aluminum hull using first stretching, rear notch shape
At hollow through-hole type battery case 10；Respectively by upper cover plate component 30,40 integrated injection molding of lower cover component, i.e.,：It will tree
Fat 50, Positive Poles 31, upper cover plate 32 carry out integrated injection molding, so that three is formed an entirety, upper cover plate component 30 is made；It will tree
Fat 50, cathode pole 41, lower cover 42 carry out integrated injection molding, so that three is formed an entirety, lower cover component 40 is made.It is preferred that
Ground is surface-treated the above, the lower lid 42 and positive and negative electrode pole 41 before the injection molding of resin 50, when being molded convenient for resin 50
It is fully combined with cover board and pole, ensures good sealing performance.Surface treatment includes anodic oxidation and phosphoric acid processing, surface
After the completion of processing, cover board is positioned with pole in injection molding machine, resin molding process is carried out and connects cover board and pole mutually insulated
It is combined.
In conclusion the full lug type lithium battery of the high magnification of the utility model is by by positive full lug 201, the full pole of cathode
Ear 202 sets up 20 both sides of battery core separately, and current carrying area can fully amplify, and overcurrent capability is strong, good rate capability.The utility model
High magnification full lug type lithium battery when preparing need not the other independent soldering polar ear on pole piece, production process is few, simple for process,
Improve production efficiency.
It should be understood that above example only expresses preferred embodiments of the present invention, description is more specific
With it is detailed, but it should not be understood as limiting the scope of the patent of the utility model；It should be pointed out that for this field
Those of ordinary skill for, without departing from the concept of the premise utility, can to above-mentioned technical characterstic carry out freely
Combination, various modifications and improvements can be made, these belong to the scope of protection of the utility model；Therefore, all with this practicality
The equivalents and modification that novel right is done, should all belong to the covering scope of the utility model claims.
Claims (10)
1. a kind of full lug type lithium battery of high magnification, which is characterized in that hollow cell shell (10), setting including both ends open
Battery core (20) in the battery case (10) and the battery case (10) both ends are separately positioned on by the battery case
The upper cover plate component (30) and lower cover component (40) of the both ends open sealing of body (10)；
The upper cover plate component (30) includes Positive Poles (31), and the lower cover component (40) includes cathode pole (41)；
The battery core (20) is the sequence according to diaphragm (23), positive plate (21), diaphragm (23), negative plate (22), diaphragm (23)
Multilaminate coiled structure made of winding；
One end of the positive plate (21) is the positive plate power accumulating portion (211) for being covered with positive electrode, the other end be blank just
Pole piece blank parts (212)；One end of the negative plate (22) is the negative plate power accumulating portion (221) for being covered with negative material, separately
One end is the negative plate blank parts (222) of blank；
The positive plate blank parts (212) and negative plate blank parts (222) are located at the both ends of the battery core (20), institute
It states positive plate blank parts (212) and is welded together to form positive full lug (201), negative plate blank parts (222) weldering
Be connected together to form the full lug of cathode (202), the full lug (201) of the anode and the full lug of cathode (202) respectively with it is described just
Pole pole (31) and the cathode pole (41) connection.
2. the full lug type lithium battery of high magnification according to claim 1, which is characterized in that the upper cover plate component (30) is also
Upper cover plate (32) including being equipped with liquid injection hole (33), the upper cover plate component (30) is by the upper cover plate (32) by the battery
One end of shell (10) seals；The upper cover plate (32) is equipped with for the Positive Poles (31) through-hole (321) that wears, it is described just
It is engaged by resin (50) insulation between pole pole (31) and the upper cover plate (32)；
The lower cover component (40) further includes the lower cover (42) equipped with explosion-proof valve (43), and the lower cover component (40) passes through
The lower cover (42) seals one end of the battery case (10)；The lower cover (42), which is equipped with, supplies the cathode pole
(41) through-hole worn is engaged between the cathode pole (41) and the lower cover (42) by resin (50) insulation.
3. the full lug type lithium battery of high magnification according to claim 2, which is characterized in that the battery case (10) is aluminium
Mass shell body, the upper cover plate (32) and the lower cover (42) are aluminium sheet, the upper cover plate (32) and the lower cover (42)
Respectively with the both ends welded seal of the battery case (10).
4. the full lug type lithium battery of high magnification according to claim 2, which is characterized in that the liquid injection hole (33) and described
Explosion-proof valve (43) is located at the same side of the battery case (10).
5. the full lug type lithium battery of high magnification according to claim 1, which is characterized in that the positive plate (21) includes just
Pole piece base material, one end that the positive electrode is covered in the positive plate substrate form the positive plate power accumulating portion (211), institute
The other end for stating positive plate substrate forms the positive plate blank parts (212)；
The negative plate (22) includes cathode plate substrate, and one end that the negative material is covered in the cathode plate substrate forms institute
Negative plate power accumulating portion (221) is stated, the other end of the cathode plate substrate forms the negative plate blank parts (222).
6. the full lug type lithium battery of high magnification according to claim 5, which is characterized in that the anode plate substrate is aluminium
Foil, the full lug (201) of anode are welded with the Positive Poles (31)；The cathode plate substrate is copper foil, and the cathode is complete
Lug (202) is welded with the cathode pole (41).
7. the full lug type lithium battery of high magnification according to claim 1 or 6, which is characterized in that the Positive Poles (31)
For aluminum pole；The cathode pole (41) is Copper-Aluminum compound pole, and one end of the cathode pole (41) is copper end, the other end
For aluminium end, the copper end is internal towards the battery case (10), and the aluminium end is external towards the battery case (10).
8. the full lug type lithium battery of high magnification according to claim 1, which is characterized in that the full lug (201) of anode
Width be less than or equal to the width of the Positive Poles (31), the width of the full lug of cathode (202) is less than or equal to institute
State the width of cathode pole (41).
9. the full lug type lithium battery of high magnification according to claim 8, which is characterized in that the full lug (201) of anode
Width it is smaller 5-8mm than the width of the Positive Poles (31), the width of the full lug of the cathode (202) is than the cathode pole
(41) the small 5-8mm of width.
10. the full lug type lithium battery of high magnification according to claim 1, which is characterized in that the positive plate (21) it is total
Width is 105mm, and the width of the positive plate blank parts (212) is 15mm；Diaphragm (23) overall width is 95mm；It is described
Negative plate (22) overall width is 105mm, and the width of the negative plate blank parts (222) is 15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820185838.6U CN207993953U (en) | 2018-02-02 | 2018-02-02 | A kind of full lug type lithium battery of high magnification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820185838.6U CN207993953U (en) | 2018-02-02 | 2018-02-02 | A kind of full lug type lithium battery of high magnification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207993953U true CN207993953U (en) | 2018-10-19 |
Family
ID=63823651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820185838.6U Active CN207993953U (en) | 2018-02-02 | 2018-02-02 | A kind of full lug type lithium battery of high magnification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207993953U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108461700A (en) * | 2018-02-02 | 2018-08-28 | 惠州拓邦电气技术有限公司 | A kind of full lug type lithium battery of high magnification and preparation method thereof |
| CN110165134A (en) * | 2019-06-05 | 2019-08-23 | 东莞塔菲尔新能源科技有限公司 | A kind of manufacturing method and power battery of power battery |
| CN112259776A (en) * | 2019-07-02 | 2021-01-22 | 邱瑞光 | Electricity storage unit, electricity storage module, and battery |
| CN114006053A (en) * | 2021-10-29 | 2022-02-01 | 蜂巢能源科技有限公司 | Lithium ion battery assembly process and lithium ion battery |
-
2018
- 2018-02-02 CN CN201820185838.6U patent/CN207993953U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108461700A (en) * | 2018-02-02 | 2018-08-28 | 惠州拓邦电气技术有限公司 | A kind of full lug type lithium battery of high magnification and preparation method thereof |
| WO2019149103A1 (en) * | 2018-02-02 | 2019-08-08 | 惠州拓邦电气技术有限公司 | High-magnification whole-tab-type lithium battery and preparation method therefor |
| CN108461700B (en) * | 2018-02-02 | 2024-01-02 | 惠州拓邦电气技术有限公司 | High-rate full-tab lithium battery and preparation method thereof |
| CN110165134A (en) * | 2019-06-05 | 2019-08-23 | 东莞塔菲尔新能源科技有限公司 | A kind of manufacturing method and power battery of power battery |
| CN110165134B (en) * | 2019-06-05 | 2022-04-12 | 江苏正力新能电池技术有限公司 | Manufacturing method of power battery and power battery |
| CN112259776A (en) * | 2019-07-02 | 2021-01-22 | 邱瑞光 | Electricity storage unit, electricity storage module, and battery |
| CN114006053A (en) * | 2021-10-29 | 2022-02-01 | 蜂巢能源科技有限公司 | Lithium ion battery assembly process and lithium ion battery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108461700A (en) | A kind of full lug type lithium battery of high magnification and preparation method thereof | |
| JP4433650B2 (en) | Lithium secondary cell and connection structure of lithium secondary cell | |
| CN207993953U (en) | A kind of full lug type lithium battery of high magnification | |
| CN207753113U (en) | A kind of high usage electrochemical device | |
| CN102148407A (en) | Prismatic sealed secondary cell and method of manufacturing the same | |
| KR20140015515A (en) | High-capacity cylindrical lithium ion battery and production method thereof | |
| CN1221054C (en) | Bag lithium ion battery preparing method and battery thereby | |
| CN109065822A (en) | Button cell | |
| CN106159123B (en) | Secondary cell | |
| CN108682755A (en) | Button cell and its manufacturing method | |
| CN208000939U (en) | Battery and equipment | |
| CN109786841B (en) | Preparation method of lithium ion electrochemical energy storage device | |
| CN111599946A (en) | Electric automobile, lithium ion battery and manufacturing method thereof | |
| CN203574066U (en) | Lithium ion battery with multi-core structure | |
| CN110034326A (en) | A kind of lithium battery and preparation method thereof of no tab | |
| CN104200999A (en) | Lithium-ion energy storage device | |
| JP2001167744A (en) | Lithium secondary battery and method for fabricating the same | |
| CN208970569U (en) | Fastening lithium ionic cell | |
| CN111403653A (en) | High-capacity battery and manufacturing method thereof | |
| CN213459844U (en) | Z-shaped laminated button type lithium ion battery | |
| CN102122725A (en) | Lithium-iron disulfide battery | |
| CN111900489A (en) | Z-shaped laminated button type lithium ion battery | |
| CN202308197U (en) | Polymer lithium ion battery with internal multi-winding-core parallel structure | |
| CN206774588U (en) | A kind of full lug quadrate lithium battery | |
| CN208093597U (en) | A kind of lithium battery casing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |