CN108807734A - Energy storage device and its packaging technology - Google Patents
Energy storage device and its packaging technology Download PDFInfo
- Publication number
- CN108807734A CN108807734A CN201710311311.3A CN201710311311A CN108807734A CN 108807734 A CN108807734 A CN 108807734A CN 201710311311 A CN201710311311 A CN 201710311311A CN 108807734 A CN108807734 A CN 108807734A
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- shell
- roll core
- end cap
- storage device
- energy storage
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- 238000004146 energy storage Methods 0.000 title claims abstract description 47
- 238000012536 packaging technology Methods 0.000 title claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 70
- 238000002347 injection Methods 0.000 claims description 16
- 239000007924 injection Substances 0.000 claims description 16
- 239000012530 fluid Substances 0.000 claims description 13
- 238000005096 rolling process Methods 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims 1
- 238000009413 insulation Methods 0.000 description 12
- 239000000463 material Substances 0.000 description 6
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000021760 high fever Diseases 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Classifications
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/78—Cases; Housings; Encapsulations; Mountings
- H01G11/80—Gaskets; Sealings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
-
- 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
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention discloses a kind of energy storage device and its packaging technologies, belong to energy storage device field.The energy storage device includes positive electrode deriving structure, electrode cores are rolled up, negative electrode deriving structure, shell and the insulating washer being set between negative electrode deriving structure and shell and the annular sealing gaskets for being set to insulating washer lower end, end cap is provided with first annular notch on the end face outer far from electrode roll core, the end cap is provided with the second annular notch on the end face outer of electrode roll core, the upper end of the insulating washer rides upon on the step surface of first annular notch, the deformation fold being recessed inwardly is provided on the shell, the Gask-O-Seal on piece is formed with and the deformation matched groove of fold, the groove makes two parts in annular sealing gaskets positioned at groove both sides be respectively arranged on the step surface of the second annular notch between the periphery and the endoporus of shell of end cap.The configuration of the present invention is simple, of low cost and dependable performance.
Description
Technical field
The present invention relates to energy storage device technical field, a kind of energy storage device and its packaging technology are particularly related to.
Background technology
Battery or ultracapacitor are widely used in the fields such as industry, the energy, military affairs as energy storage device.Wherein seal
With key link of the insulation as production process, it is general using the sealing element with certain structure and insulating part to energy storage device into
Row sealing and insulation.The sealing element of different structure and the sealing of insulating part and insulation mode difference, the insulated enclosure effect of generation
Also different.Not only the security performance of energy storage device is played a crucial role using which kind of shell insulation and sealing structure, it is right
The performance of energy storage device and service life also have a major impact.
Currently used shell insulation and sealing structure has following two structure types, the first structure type such as Fig. 1 institutes
Show, which is placed in O-ring 3 ' shaft shoulder lower face of end cap 1 ', the embedded step upper surface with shell 4 '
Between be sealed processing, be respectively placed in the embedded of the shaft shoulder upper surface of collector plate 5 ' and shell 4 ' using 2 insulating washers 2 '
Insulation processing is carried out between step lower face, between the shaft shoulder upper surface of end cap 1 ' and the sealing end face of shell 4 '.The shell is exhausted
Insulation processing is carried out using 2 insulating washers in edge sealing structure, required part is more, and manufacture and assembly cost are higher.
Second of shell insulation and sealing structure as shown in Fig. 2, the shell insulation and sealing structure end cap 3 " and shell 1 " it
Between arrange insulator seal ring 2 ", by carrying out slot rolling to corresponding with 3 " unit with grooves in outer wall of end cap position on shell 1 " and to shell
Body 1 " carries out sealing treatment and realizes sealing and insulation.Using the sealing ring 2 " of the shell insulation and sealing structure because of more special of shape
Can be customized, and sealing area is larger, material requested is more, and the material of sealing ring 2 " is more special, price costly, so
The manufacturing cost of insulator seal ring is 3-4 times of general general sealing element, is produced in enormous quantities, and cost is too high.
Invention content
The technical problem to be solved in the present invention is to provide a kind of of simple structure and low cost and dependable performance accumulators
Part and its packaging technology.
In order to solve the above technical problems, present invention offer technical solution is as follows：
A kind of energy storage device, including positive electrode deriving structure, electrode cores volume, the negative electrode that is made of end cap and collector draw
Go out structure, be set in the shell of negative electrode deriving structure periphery and be set between the negative electrode deriving structure and shell
Insulating seal, the insulating seal includes insulating washer and is set to the Gask-O-Seal of the insulating washer lower end
Piece, the end cap are provided with first annular notch on the end face outer far from the electrode roll core, and the end cap is close to electrode roll
The second annular notch is provided on the end face outer of core, the upper end of the insulating washer rides upon the platform of the first annular notch
It is corresponding between the end face of the electrode roll core and the end face of electrode roll core with the end cap on the shell on terrace
Position is provided with the deformation fold being recessed inwardly, and the Gask-O-Seal on piece is formed with matched recessed with the deformation fold
Slot, the groove make two parts in the annular sealing gaskets positioned at the groove both sides be respectively arranged at second ring
On the step surface of v notch v between the periphery of the end cap and the endoporus of shell.
Further, the outer circumference diameter of the annular sealing gaskets is more than the diameter of bore of the shell.
Further, the ring along the extension of the edge of the end cap is convexly equipped on the outside of the step surface of the first annular notch
Shape protrusion, the upper end of the insulating washer is wrapped in the outside of the annular protrusion and rides upon the platform of the first annular notch
On terrace.
Further, the end cap has the first blind hole, the periphery set of the collector close to the end set of electrode roll core
It is located in first blind hole, the end of the collector is welded to connect with the electrode roll core.
Further, the end set of the end cap has and diameter coaxial with first blind hole to be less than described first blind
The ladder hole of the diameter in hole is provided with fluid injection plug in the ladder hole.
Further, the positive electrode deriving structure includes the lower face for being set to the electrode roll core and the shell
The upper end of flow collection sheet between the lower face of endoporus, the flow collection sheet is provided with the second blind hole, the electrode roll core interference inserting
In second blind hole, the periphery of the flow collection sheet and the endoporus of the shell are interference fitted, and the flow collection sheet is set in institute
It states in the endoporus of shell, the lower end of the shell is wholely set the boss as anode.
Further, the upper surface of the electrode roll core is provided with negative electrode lug, and the lower face of the electrode roll core is provided with
Anode ear, the collector are connect with negative pole lug welding, and the flow collection sheet is welded to connect with anode ear.
A kind of packaging technology of above-mentioned energy storage device, including：
Step 1：The upper surface of the collector and the electrode roll core is welded；
Step 2：The end cap is welded close to the end face of electrode roll core and the collector；
Step 3：The annular sealing gaskets is placed on the step surface of the second annular notch of the end cap；
Step 4：The end cap will be fixedly connected with and be placed with described in the electrode roll core insertion of the annular sealing gaskets
In shell；
Step 5：With the end cap close to the end face of the electrode roll core and electrode roll core on the peripheral surface of the shell
End face between corresponding position inwardly squeeze or rolling, with by the deformation fold generated on the shell in the annular
The groove with the deformation fold cooperation is squeezed out on gasket seal；
Step 6：It is arranged the insulating washer between the periphery of the end cap and the endoporus of shell, and makes the felt pad
The upper end of circle rides upon on the step surface of the first annular notch；
Step 7：Mechanical pressure is applied along its axis direction to the open end of the shell, makes the open end shape of the shell
At inside sealing flange, the upper end of the insulating washer is pressed on the step of the first annular notch by the sealing flange
On face, sealing is realized；
Step 8：Energy storage device after sealing is dried；
Step 9：Fluid injection is carried out to the energy storage device after drying, fluid injection plug is set in the liquid injection hole of energy storage device later,
And the fluid injection plug is fixedly connected with using welding connecting mode by realization sealing with end cap.
Further, the step 1 further includes：Flow collection sheet is welded in the lower face of the electrode roll core.
Further, in the step 4, when the electrode roll core to be inserted into the endoporus of shell, the temperature of the shell
It is maintained at 180~200 DEG C.
The invention has the advantages that：
Compared with prior art, energy storage device of the invention between shell and electrode lead-out structure by being arranged felt pad
Circle and annular sealing gaskets carry out insulated enclosure processing, and during annular sealing gaskets is inserted into enclosure interior, annular is close
It is ladder-like that gasket by axial compression makes its flake shape be deformed into, and then carrying out slight slot rolling to shell forms deformation pleat
Wrinkle, when carrying out slot rolling to shell, annular sealing gaskets by shell because being extruded on its position corresponding with deformation fold
It is formed and is thereby secured to the step surface of the second annular notch of end cap with the matched groove of deformation fold, annular sealing gaskets
Between upper and the periphery and the endoporus of shell of end cap, and then realize axial limiting of the end cap in shell, this structure is ensureing
While insulating properties and leakproofness, the materials'use amount of insulating washer has been saved；And the present invention is used insulating washer and ring
The mode that shape gasket seal is separately handled so that not with electrolyte contacts, insulating washer is insulating washer using general material
Insulating requirements can be met, annular sealing gaskets is general-purpose device, and model is smaller, reduces cost.The energy storage device of the present invention
Simply, annular sealing gaskets deflection is easily controllable, and sealing consistency is preferable, is not in unqualified phenomenon substantially.
Description of the drawings
Fig. 1 is the structural schematic diagram of the first energy storage device in the prior art；
Fig. 2 is the structural schematic diagram of second of energy storage device in the prior art；
Fig. 3 is the structural schematic diagram of the energy storage device of the present invention；
Fig. 4 be the present invention energy storage device in end cap structural schematic diagram.
Specific implementation mode
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
On the one hand, the present invention provides a kind of energy storage device, as shown in Figure 3 to Figure 4, including positive electrode deriving structure, electrode
Core volume 7, the negative electrode deriving structure being made of end cap 4 and collector 5,1 and of shell for being set in negative electrode deriving structure periphery
The insulating seal being set between negative electrode deriving structure and shell 1, insulating seal include insulating washer 3 and are set to absolutely
The annular sealing gaskets 2 of 3 lower end of edge washer, end cap 4 are provided with first annular notch 4- on the end face outer far from electrode roll core 7
1, end cap 4 is provided with the second annular notch 4-2 on the end face outer of electrode roll core 7, and the upper end of insulating washer 3 rides upon the
On the step surface of one annular notch 4-1, on shell 1 with end cap 4 close to the end face of electrode roll core 7 and the end face of electrode roll core 7 it
Between corresponding position be provided with the deformation fold 1-1 being recessed inwardly, be formed in annular sealing gaskets 2 and deformation fold 1-1
Matched groove 2-1, groove 2-1 make two parts in annular sealing gaskets 2 positioned at the both sides groove 2-1 be respectively arranged at the
On the step surface of second ring notch 4-2 between the periphery and the endoporus of shell 1 of end cap 4.
The energy storage device of the present invention between shell and electrode lead-out structure by being arranged insulating washer and Gask-O-Seal
Piece carries out insulated enclosure processing, and during annular sealing gaskets is inserted into enclosure interior, annular sealing gaskets passes through axial direction
It is ladder-like that compression makes its flake shape be deformed into, and then carrying out slight slot rolling to shell forms deformation fold, is carried out to shell
When slot rolling, annular sealing gaskets is formed and the deformation fold because being extruded on its position corresponding with deformation fold by shell
Matched groove, annular sealing gaskets is thereby secured on the step surface of the second annular notch of end cap and the periphery of end cap
Between the endoporus of shell, and then realize axial limiting of the end cap in shell, this structure is ensureing insulating properties and leakproofness
Meanwhile the materials'use amount of insulating washer is saved；And the present invention, which is used, separately locates insulating washer with annular sealing gaskets
The mode of reason so that for insulating washer not with electrolyte contacts, insulating washer can meet insulating requirements, ring using general material
Shape gasket seal is general-purpose device, and model is smaller, reduces cost.The energy storage device of the present invention is simple, annular sealing gaskets
Deflection is easily controllable, and sealing consistency is preferable, is not in unqualified phenomenon substantially.
Energy storage device in the present invention preferably includes ultracapacitor and battery.
Preferably, the outer circumference diameter of annular sealing gaskets 2 can be more than the diameter of bore of shell 1.This structure makes ring
For shape gasket seal 2 during being inserted into 1 inside of shell, annular sealing gaskets 2 makes its flake shape deform by axial compression
To be ladder-like, the upper end of annular sealing gaskets 2 is located between the periphery and the endoporus of shell 1 of end cap 4, and there is preferable sealing to make
With.
Further, the outside of the step surface of first annular notch 4-1 is preferably convexly equipped with the ring along the extension of the edge of end cap 4
The upper end of shape protrusion 4-3, insulating washer 3 are wrapped in the outside of annular protrusion 4-3 and ride upon the step of first annular notch 4-1
On face.Annular protrusion 4-3 jacks up the upper end bending part of insulating washer 3 and shell 1 upwards, in the sealing flange 1-2 of shell 1
Parcel of the root setting on annular protrusion 4-3 with the positioning flange 3-1 of insulating washer 3, to form preferably insulation
Sealing effect.
Under the premise of ensureing the memory space of electrolyte, in order to make the connection area between end cap 4 and collector 5 more
Greatly, connection is more secured, and end cap 4 is preferably provided with the first blind hole 4-4, the periphery set of collector 5 close to the end of electrode roll core 7
It is located in the first blind hole 4-4, end and the electrode roll core 7 of collector 5 are welded to connect.
Preferably, the end of end cap 4 can be provided with and diameter coaxial with the first blind hole 4-4 less than the first blind hole 4-4
Diameter ladder hole 4-5, be provided with fluid injection plug 6 in ladder hole 4-5.Ladder hole 4-5 is used for end cap 4 and collector
Electrolyte is injected between 5, fills in fluid injection plug 6 in ladder hole 4-5 after the completion of fluid injection, and is note by way of laser welding
Liquid plug 6 is connected with end cap 4 to realize sealing.
Further, positive electrode deriving structure preferably includes the lower face for being set to electrode roll core 7 and the endoporus of shell 1
The upper end of flow collection sheet 8 between lower face, flow collection sheet 8 is provided with the second blind hole, and 7 interference inserting of electrode roll core is in the second blind hole
Interior, the periphery of flow collection sheet 8 is interference fitted with the endoporus of shell 1, and flow collection sheet 8 is set in the endoporus of shell 1, the lower end of shell 1
It is wholely set the boss 8-1 as anode.This electrode lead-out structure compact dimensions, connection type are reliable.
As an improvement of the present invention, the upper surface of electrode roll core 7 is preferably provided with negative electrode lug, under electrode roll core 7
End face is preferably provided with anode ear, and collector 5 is connect with negative pole lug welding, and flow collection sheet 8 is welded to connect with anode ear.Anode ear and
So that the energy storage device of the present invention is in charge and discharge, powerful electric current can be passed at any time by electrode roll core 7 for the setting of negative electrode lug
Defeated to arrive anode ear and negative electrode lug, resistance very little not will produce higher Wen Sheng, therefore continuous under high-power, current state
When work, energy storage device not will produce high fever phenomenon, to improve energy storage device side safety and stability, effectively
Extend the service life of energy storage device.
On the other hand, the present invention also provides a kind of packaging technologies of above-mentioned energy storage device, including：
Step 1：The upper surface of collector 5 and electrode roll core 7 is welded；
In this step, it can also be attached using riveting method between collector 5 and electrode roll core 7.
Step 2：End cap 4 is welded close to the end face of electrode roll core 7 and collector 5；
Step 3：Annular sealing gaskets 2 is placed on the step surface of the second annular notch 4-2 of end cap 4；
Step 4：End cap 4 will be fixedly connected with and be placed in the insertion shell 1 of electrode roll core 7 of annular sealing gaskets 2；
In this step, electrode roll core 7 during being inserted into shell 1, annular sealing gaskets 2 by axial compression make its by
Flake shape is deformed into ladder-like, and a part for deformed annular sealing gaskets 2 is set to the second annular notch 4-2's
On step surface, another part is set between the periphery of end cap 4 and the endoporus of shell 1.
Step 5：On the peripheral surface of shell 1 with end cap 4 close to the end face of electrode roll core 7 and the end face of electrode roll core 7 it
Between corresponding position inwardly squeeze or rolling, with by the deformation fold 1-1 generated on shell 1 in annular sealing gaskets 2
Squeeze out the groove with deformation fold cooperation；
Step 6：It is arranged insulating washer 3 between the periphery of end cap 4 and the endoporus of shell 1, and makes the upper end of insulating washer 3
On the step surface for riding upon first annular notch 4-1；
Step 7：Mechanical pressure is applied along its axis direction to the open end of shell 1, the open end of shell 1 is made to be formed inwardly
Sealing flange 1-2, the upper end of insulating washer 3 is pressed on the step surface of first annular notch 4-1 by sealing flange 1-2, real
Now seal；
Step 8：Energy storage device after sealing is dried；
Drying time is preferably within 24~96 hours in this step.
Step 9：Fluid injection is carried out to the energy storage device after drying, fluid injection plug 6 is set in the liquid injection hole of energy storage device later,
And fluid injection plug 6 is fixedly connected with using welding connecting mode by realization sealing with end cap 4.Reservoir quantity in this step is preferably 5~
10g/Ah。
Being welded electrode roll core 7 and collector 5 in the packaging technology of the energy storage device of the present invention (can also use riveting
The connection type connect) contact internal resistance between the two can be reduced, when electrode roll core 7 is assembled with shell 1, using hot charging work
Skill, it is ensured that electrode roll core 7 is in close contact with shell 1, to reduce contact internal resistance.The assembling of energy storage device provided by the invention
It is simple for process, conveniently, it is suitble to large-scale industrial production.
Further, step 1 can also include：Flow collection sheet 8 is welded in the lower face of electrode roll core 7 in order to draw just
Pole.
In order to ensure the close contact of flow collection sheet 8 and shell 1, contact internal resistance between the two is reduced, in step 4,
When electrode roll core 7 is inserted into the endoporus of shell 1, it is preferred to use the temperature of hot-mounting process, shell 1 is maintained at 180~200 DEG C.
It is the preferred embodiment of the present invention above, it is noted that for those skilled in the art,
Various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should be regarded as this
The protection domain of invention.
Claims (10)
1. a kind of energy storage device, including positive electrode deriving structure, electrode cores are rolled up, are drawn by the negative electrode that end cap and collector are constituted
It structure, the shell for being set in negative electrode deriving structure periphery and is set between the negative electrode deriving structure and shell
Insulating seal, which is characterized in that the insulating seal includes insulating washer and is set to the ring of the insulating washer lower end
Shape gasket seal, the end cap are provided with first annular notch on the end face outer far from the electrode roll core, and the end cap leans on
It is provided with the second annular notch on the end face outer of nearly electrode roll core, the upper end of the insulating washer rides upon described first annular
On the step surface of notch, on the shell with the end cap between the end face of the electrode roll core and the end face of electrode roll core
Corresponding position is provided with the deformation fold being recessed inwardly, and the Gask-O-Seal on piece is formed with and the deformation fold phase
The groove of cooperation, the groove make two parts in the annular sealing gaskets positioned at the groove both sides be respectively arranged at institute
It states on the step surface of the second annular notch between the periphery and the endoporus of shell of the end cap.
2. energy storage device according to claim 1, which is characterized in that the outer circumference diameter of the annular sealing gaskets is more than institute
State the diameter of bore of shell.
3. energy storage device according to claim 1, which is characterized in that the outside of the step surface of the first annular notch is convex
Equipped with the annular protrusion extended along the edge of the end cap, the upper end of the insulating washer is wrapped in the outside of the annular protrusion
And it rides upon on the step surface of the first annular notch.
4. energy storage device according to claim 1, which is characterized in that the end cap has close to the end set of electrode roll core
The periphery of first blind hole, the collector is set in first blind hole, the end of the collector and the electrode roll core
It is welded to connect.
5. energy storage device according to claim 4, which is characterized in that the end set of the end cap have with it is described first blind
Hole is coaxial and diameter is less than the ladder hole of first diameter of blind hole, and fluid injection plug is provided in the ladder hole.
6. according to any energy storage device in claim 1 to 5, which is characterized in that the positive electrode deriving structure includes
The flow collection sheet being set between the lower face of the electrode roll core and the lower face of the endoporus of the shell, the flow collection sheet it is upper
End be provided with the second blind hole, the electrode roll core interference inserting in second blind hole, the periphery of the flow collection sheet with it is described
The endoporus of shell is interference fitted, and the flow collection sheet is set in the endoporus of the shell, and the lower end of the shell has been wholely set
Boss as anode.
7. energy storage device according to claim 6, which is characterized in that the upper surface of the electrode roll core is provided with cathode
The lower face of ear, the electrode roll core is provided with anode ear, and the collector is connect with negative pole lug welding, the flow collection sheet with just
Tab welding connects.
8. the packaging technology of any energy storage device in a kind of claim 1 to 7, which is characterized in that including：
Step 1：The upper surface of the collector and the electrode roll core is welded；
Step 2：The end cap is welded close to the end face of electrode roll core and the collector；
Step 3：The annular sealing gaskets is placed on the step surface of the second annular notch of the end cap；
Step 4：The end cap will be fixedly connected with and is placed with the electrode roll core insertion shell of the annular sealing gaskets
In；
Step 5：With the end cap close to the end of the end face of the electrode roll core and electrode roll core on the peripheral surface of the shell
Between face corresponding position inwardly squeeze or rolling, with by the deformation fold generated on the shell in the ring packing
The groove with the deformation fold cooperation is squeezed out on gasket；
Step 6：It is arranged the insulating washer between the periphery of the end cap and the endoporus of shell, and makes the insulating washer
Upper end rides upon on the step surface of the first annular notch；
Step 7：Mechanical pressure is applied along its axis direction to the open end of the shell, make the open end of the shell formed to
The upper end of the insulating washer is pressed on the step surface of the first annular notch by interior sealing flange, the sealing flange
On, realize sealing；
Step 8：Energy storage device after sealing is dried；
Step 9：Note night is carried out to the energy storage device after drying, fluid injection plug is set in the liquid injection hole of energy storage device later, and adopts
The fluid injection plug is fixedly connected to realization sealing with welding connecting mode with end cap.
9. packaging technology according to claim 8, which is characterized in that the step 1 further includes：In the electrode roll core
Weld flow collection sheet in lower face.
10. packaging technology according to claim 8, which is characterized in that in the step 4, inserted by the electrode roll core
When entering the endoporus of shell, the temperature of the shell is maintained at 180~200 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710311311.3A CN108807734A (en) | 2017-05-05 | 2017-05-05 | Energy storage device and its packaging technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710311311.3A CN108807734A (en) | 2017-05-05 | 2017-05-05 | Energy storage device and its packaging technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108807734A true CN108807734A (en) | 2018-11-13 |
Family
ID=64054793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710311311.3A Pending CN108807734A (en) | 2017-05-05 | 2017-05-05 | Energy storage device and its packaging technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108807734A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112820948A (en) * | 2021-02-26 | 2021-05-18 | 湖北亿纬动力有限公司 | Cylindrical lithium ion battery |
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| CN114361668A (en) * | 2022-01-19 | 2022-04-15 | 宁波久鼎新能源科技有限公司 | Improved generation lithium cell negative pole end seal structure |
| CN115548543A (en) * | 2022-10-28 | 2022-12-30 | 烯晶碳能电子科技无锡有限公司 | Energy storage element monomer structure and manufacturing method of energy storage element monomer |
| KR20240118568A (en) * | 2023-01-27 | 2024-08-05 | 삼성에스디아이 주식회사 | Seconadry battery and manufacturing method thereof |
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Application publication date: 20181113 |