CN208955033U - Secondary cell - Google Patents
Secondary cell Download PDFInfo
- Publication number
- CN208955033U CN208955033U CN201821699067.9U CN201821699067U CN208955033U CN 208955033 U CN208955033 U CN 208955033U CN 201821699067 U CN201821699067 U CN 201821699067U CN 208955033 U CN208955033 U CN 208955033U
- Authority
- CN
- China
- Prior art keywords
- gap
- diaphragm seal
- cover board
- secondary cell
- groove
- 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
Landscapes
- Filling, Topping-Up Batteries (AREA)
Abstract
The utility model provides a kind of secondary cell comprising electrode assembly, shell, cover board, the first diaphragm seal and the second diaphragm seal.Electrode assembly is contained in shell, and cover board is connected to shell and is equipped with liquid injection hole.First diaphragm seal is set to the side of the separate electrode assembly of cover board and including first part and second part, and first part covers liquid injection hole, and second part is looped around the periphery of first part and is fixed on cover board；First part is equipped with the gap being connected to liquid injection hole.Second diaphragm seal is set to the side of the separate cover board of the first diaphragm seal.The secondary cell of the application can reduce the dismounting of diaphragm seal, simplify production technology, improve production efficiency, while electrolyte being avoided to splash out, guarantee the quality of secondary cell.
Description
Technical field
The utility model relates to field of batteries more particularly to a kind of secondary cells.
Background technique
The production of secondary cell is needed by multiple processes, such as fluid injection, chemical conversion, pumping, sealing etc..It is secondary in order to meet
Requirement of the battery to service life needs to inject enough electrolyte in the inside of secondary cell.After completing first time fluid injection,
It needs to be inserted into sealing nail in liquid injection hole, then enters back into formation process；Sealing nail can be avoided electrolyte in moving process
It splashes out, moreover it is possible to prevent foreign matter from entering inside battery.After chemical conversion, it is also necessary to sealing nail is taken out, second of fluid injection is carried out,
It also needs to follow closely again insertable into sealing after the completion of second of fluid injection, then continues process after entering.After the completion of all process steps, welding gold
Belong to diaphragm seal, liquid injection hole is thoroughly sealed.However, in process of production, multiple plug is needed to seal nail, production effect is reduced
Rate；Meanwhile when extracting sealing nail, it is also easy to take electrolyte out of, influences the quality of secondary cell.
Utility model content
In view of the problems in the background art, the purpose of this utility model is to provide a kind of secondary cells, can letter
Metaplasia production. art guarantees the quality of secondary cell.
To achieve the goals above, the utility model provides a kind of secondary cell comprising electrode assembly, shell, lid
Plate, the first diaphragm seal and the second diaphragm seal.Electrode assembly is contained in shell, and cover board is connected to shell and is equipped with liquid injection hole.The
One diaphragm seal is set to the side of the separate electrode assembly of cover board and including first part and second part, first part's covering note
Fluid apertures, second part are looped around the periphery of first part and are fixed on cover board；First part is equipped with the gap being connected to liquid injection hole.
Second diaphragm seal is set to the side of the separate cover board of the first diaphragm seal.
Gap is bar shaped, and the width in gap is 0.1mm~2mm.Gap includes the first gap and the second gap, the first seam
Gap and the intersection of the second gap.Preferably, the first gap and the second gap are intersected at the center of first part.
First part includes body region and marginal zone, and marginal zone is connected with body region and is arranged along gap, and marginal zone
Thickness be less than body region thickness.Preferably, along the direction close to gap, the thickness of marginal zone is gradually reduced.
The material of first diaphragm seal is flexible plastic cement.
Second part is adhered to cover board.
Cover board is equipped with groove, and groove is extended downwardly from the upper surface of cover board, and liquid injection hole extends to cover board from the bottom wall of groove
Lower surface.First diaphragm seal is arranged in the groove and second part is fixed on the bottom wall of groove, and the second diaphragm seal is set to recessed
Slot is interior and is welded in the side wall of groove.
Gap is through-hole, and the aperture of the through-hole is 0.1mm~2mm.
The beneficial effects of the utility model are as follows: the secondary cell of the application can reduce the dismounting of diaphragm seal, simplify life
Production. art improves production efficiency, while electrolyte being avoided to splash out, and guarantees the quality of secondary cell.
Detailed description of the invention
Fig. 1 is the schematic diagram according to the secondary cell of the utility model.
Fig. 2 is another schematic diagram according to the secondary cell of the utility model.
Fig. 3 is the enlarged drawing of Fig. 2 Blocked portion.
Fig. 4 is the schematic diagram of the first embodiment of the first diaphragm seal of the secondary cell of the utility model.
Fig. 5 is the schematic diagram of the second embodiment of the first diaphragm seal of the secondary cell of the utility model.
Fig. 6 is the schematic diagram of the 3rd embodiment of the first diaphragm seal of the secondary cell of the utility model.
Fig. 7 is the cross-section diagram that L-L makes along Fig. 6.
Fig. 8 is the schematic diagram of the fourth embodiment of the first diaphragm seal of the secondary cell of the utility model.
Wherein, the reference numerals are as follows:
1 electrode assembly, 412 marginal zone
2 shell, 42 second part
3 cover board, 5 second diaphragm seal
31 liquid injection hole, 6 electrode terminal
32 groove, 7 double-sided adhesive
4 first gaps diaphragm seal G
41 the first gaps first part G1
411 the second gaps body region G2
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.Below
Description only actually at least one exemplary embodiment be it is illustrative, never as to the application and its application or making
Any restrictions.Based on the embodiment in the application, those of ordinary skill in the art are in no development creative work premise
Under every other embodiment obtained, shall fall in the protection scope of this application.
In the description of the present application, it is to be understood that limit components using the words such as " first ", " second ", only
It is merely for convenience of distinguishing corresponding components, there is no Stated otherwise such as, there is no particular meanings for above-mentioned word, therefore not
It can be interpreted as the limitation to the application protection scope.
Referring to Figures 1 and 2, secondary cell includes electrode assembly 1, shell 2, cover board 3, the first diaphragm seal 4 and the second sealing
Piece 5.
Electrode assembly 1 includes anode pole piece, cathode pole piece and diaphragm, diaphragm be set to anode pole piece and cathode pole piece it
Between.Anode pole piece, diaphragm and cathode pole piece are stacked and are wound into flat.Electrode assembly 1 is that secondary cell realizes charge and discharge electric work
The core component of energy.
Shell 2 can have hexahedral shape or other shapes.Cavity is formed inside shell 2, with accommodate electrod component 1 and electricity
Solve liquid.Shell 2 forms opening at one end, and electrode assembly 1 can be placed into the accommodating chamber of shell 2 via described be open.Shell 2 can
It is made, can also be made of insulating materials such as plastic cement of the material of the conductive metals such as aluminum or aluminum alloy.
Cover board 3 is set to shell 2 and covers the opening of shell 2, so that electrode assembly 1 is enclosed in shell 2.Electrode tip
Son 6 is set to cover board 3, and the upper end of electrode terminal 6 is projected into 3 upside of cover board, and lower end may pass through cover board 3 and extend in shell 2.
Anode pole piece and cathode pole piece are electrically connected in two electrode terminals 6.
Cover board 3 is equipped with liquid injection hole 31, and liquid injection hole 31 is connected to the cavity inside shell 2.External liquid-injection equipment can be via
Liquid injection hole 31 is to injecting electrolyte inside shell 2.
Referring to Fig. 3 and Fig. 4, the first diaphragm seal 4 is set to the side of the separate electrode assembly 1 of cover board 3, that is to say, that the
One diaphragm seal 4 is located at the upside of cover board 3.First diaphragm seal 4 includes first part 41 and second part 42, and first part 41 is from upper
Side covers liquid injection hole 31, and second part 42 is looped around the periphery of first part 41.First part 41 is equipped with and is connected to liquid injection hole 31
Gap G.
First diaphragm seal 4 can be circular sheet body, and the first diaphragm seal 4 and the part opposing upper and lower of liquid injection hole 31 are first
Part 41, second part 42 are circular and are bonded on cover board 3.
Second diaphragm seal 5 is set to the side of the separate cover board 3 of the first diaphragm seal 4 and seals gap G.Second diaphragm seal
5 be sheet metal, and is tightly connected with cover board 3.First diaphragm seal 4 is located between cover board 3 and the second diaphragm seal 5, the second diaphragm seal 5
Gap G and the space outside secondary cell are separated.
After the completion of first time fluid injection, first diaphragm seal 4 can be adhered on cover board 3 by double-sided adhesive 7, and make gap G with
Liquid injection hole 31 is opposite.Since electrolyte has certain viscosity, so electrolyte can be first under the action of surface tension
The inner surface (i.e. towards the surface of electrode assembly 1) of part 41 forms liquid film, and liquid film can block gap G, avoid being electrolysed
Liquid splashes out in the handling process of secondary cell, reduces the probability of electrolyte leakage.Similarly, the first diaphragm seal 4 can also prevent
Foreign matter enters inside secondary cell.
It after the completion of chemical conversion, needs to carry out second of fluid injection, at this point, can be pressed directly against first close for external liquid-injection equipment
On mounting 4, under the action of high pressure, electrolyte can pass through gap G and flow into liquid injection hole 31.That is, being infused at second
When liquid, without removing the first diaphragm seal 4, to simplify production technology, electrolyte is avoided to splash out.
In addition, the first diaphragm seal 4 will not influence the normal exhaust of secondary cell in process of production.
After the completion of all processes related with liquid injection hole 31, the second diaphragm seal 5 is sealed and welded on cover board 3, second
Diaphragm seal 5 closes gap G from outside, guarantees the leakproofness of secondary cell entirety.
The secondary cell of the application can reduce the dismounting of the first diaphragm seal 4, simplify production technology, improve production efficiency,
It avoids electrolyte from splashing out simultaneously, guarantees the quality of secondary cell.
Cover board 3 is equipped with groove 32, and groove 32 is extended downwardly from the upper surface of cover board 3, bottom wall of the liquid injection hole 31 from groove 32
Extend to the lower surface of cover board 3.First diaphragm seal 4 is set in groove 32, and second part 42 can be fixed on recessed by double-sided adhesive 7
The bottom wall of slot 32.Second diaphragm seal 5 is set in groove 32 and the upper surface for first diaphragm seal 4 that reclines, so that gap G is close
Envelope.The periphery of second diaphragm seal 5 is welded in the side wall of groove 32, to guarantee sealing effect.
The material of first diaphragm seal 4 is flexible plastic cement.
The first diaphragm seal 4 of the application is described in detail with different embodiments below.
It in the first embodiment, is bar shaped referring to Fig. 4, gap G, it is preferable that gap G is linear.The width of gap G is
0.1mm~2mm.If the width of gap G is less than 0.1mm, the efficiency of second of fluid injection may be will affect, in some instances it may even be possible to which meeting can not
Fluid injection.If the width of gap G is greater than 2mm, electrolyte is not easy to form liquid film in the inner surface of first part 41, and electrolyte splashes
Probability out is higher, is unable to satisfy the requirement of sealing.
Gap G intersects including the first gap G1 and the second gap G2, the first gap G1 and the second gap G2.First gap G1
It can be multiple and be parallel to each other, the second gap G2 intersects with the multiple first gap G1.Preferably, the first gap G1 and
Two gap G2 are vertical.
First part 41 is divided into multiple mutually disjunct covering parts by the first gap G1 and the second gap G2 of intersection.By
It is made in the first diaphragm seal 4 of flexible plastic cement, therefore, in second of fluid injection, each covering part can be in electrolyte
It is bent under pressure effect towards liquid injection hole 31；Accordingly, the first gap G1 and the second gap G2 can also be increased with it, to reduce
Resistance when fluid injection improves fluid injection efficiency.After the completion of fluid injection, each covering part restores to the original state under the action of natural resiliency, corresponding
Ground, the first gap G1 and the second gap G2 can also reduce therewith, and then realize the sealing of liquid injection hole 31, avoid electrolyte secondary
It is splashed out in the handling process of battery.
It in a second embodiment, is bar shaped referring to Fig. 5, gap G, it is preferable that gap G is linear.The width of gap G is
0.1mm~2mm.
Gap G includes the first gap G1 and the second gap G2, and the first gap G1 and the second gap G2 are in first part 41
Intersect at center.First diaphragm seal 4 is disc-shaped, and the first gap G1 and the second gap G2 can prolong along the radial direction of the first diaphragm seal 4
It stretches, that is to say, that the first gap G1 and the second gap G2 intersects in the center point of the first diaphragm seal 4.First gap G1 and second
Gap G2 can be multiple.
First part 41 is divided into multiple mutually disjunct covering parts by the first gap G1 and the second gap G2, and described more
A covering part is sector.Compared with first embodiment, the shape of the multiple covering part is identical and is evenly distributed, therefore,
When second of fluid injection, the multiple covering part can the homogeneous deformation under the pressure of electrolyte, thus resistance when reducing fluid injection,
Improve fluid injection efficiency.
Referring to figure 6 and figure 7,3rd embodiment is substantially the same with second embodiment, and difference is the knot of first part 41
Structure.
Specifically, first part 41 include body region 411 and marginal zone 412, marginal zone 412 be connected with body region 411 and
It is arranged along gap G, and the thickness of marginal zone 412 is less than the thickness of body region 411.
It since 412 thickness of marginal zone is smaller, is easily deformed under the pressure of electrolyte, when deformation can increase seam
The width of gap G reduces resistance when fluid injection.Therefore, compared with second embodiment, 3rd embodiment can be using with smaller width
The gap G of degree.The width of the gap G of 3rd embodiment can be 0.1mm~1mm.Liquid film is more readily formed in lesser gap G,
Therefore, compared with second embodiment, 3rd embodiment has better sealing.
The thickness of marginal zone 412 can be 0.1mm~0.5mm, and the thickness of body region 411 can be 0.5mm~1mm.
Under the pressure of electrolyte, marginal zone 412 is deformed since close to the position of gap G, therefore, more along close to gap
G, marginal zone 412 need to be easier to deform.Preferably, referring to Fig. 7, along the direction close to gap G, the thickness of marginal zone 412 by
It is decrescence small.
It in the fourth embodiment, is through-hole referring to Fig. 8, gap G, and the aperture of the through-hole is 0.1mm~2mm.It is described
Through-hole can be round hole or square hole.First diaphragm seal 4 can be strainer made of plastic cement.
Claims (10)
1. a kind of secondary cell, including electrode assembly (1), shell (2), cover board (3), the first diaphragm seal (4) and the second diaphragm seal
(5)；
Electrode assembly (1) is contained in shell (2), and cover board (3) is connected to shell (2) and is equipped with liquid injection hole (31)；
First diaphragm seal (4) is set to the side of the separate electrode assembly (1) of cover board (3) and including first part (41) and second
Partially (42), first part (41) cover liquid injection hole (31), and second part (42) is looped around the periphery of first part (41) and consolidates
Due to cover board (3)；First part (41) is equipped with the gap (G) being connected to liquid injection hole (31)；
Second diaphragm seal (5) is set to the side of the separate cover board (3) of the first diaphragm seal (4).
2. secondary cell according to claim 1, which is characterized in that gap (G) is bar shaped, and the width of gap (G) is
0.1mm~2mm.
3. secondary cell according to claim 2, which is characterized in that gap (G) includes the first gap (G1) and the second seam
Gap (G2), the first gap (G1) and the second gap (G2) intersection.
4. secondary cell according to claim 3, which is characterized in that the first gap (G1) and the second gap (G2) is first
Partially intersect at the center of (41).
5. secondary cell described in any one of -4 according to claim 1, which is characterized in that first part (41) includes body region
(411) and marginal zone (412), marginal zone (412) are connected with body region (411) and are arranged along gap (G), and marginal zone
(412) thickness is less than the thickness of body region (411).
6. secondary cell according to claim 5, which is characterized in that along the direction close to gap (G), marginal zone (412)
Thickness be gradually reduced.
7. secondary cell according to claim 1, which is characterized in that the material of the first diaphragm seal (4) is flexible
Plastic cement.
8. secondary cell according to claim 1, which is characterized in that second part (42) is adhered to cover board (3).
9. secondary cell according to claim 1, which is characterized in that
Cover board (3) is equipped with groove (32), and groove (32) extends downwardly from the upper surface of cover board (3), and liquid injection hole (31) is from groove
(32) bottom wall extends to the lower surface of cover board (3)；
First diaphragm seal (4) is set in groove (32) and second part (42) is fixed on the bottom wall of groove (32), the second sealing
Piece (5) is set in groove (32) and is welded in the side wall of groove (32).
10. secondary cell according to claim 1, which is characterized in that gap (G) is through-hole, and the aperture of the through-hole
For 0.1mm~2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821699067.9U CN208955033U (en) | 2018-10-19 | 2018-10-19 | Secondary cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821699067.9U CN208955033U (en) | 2018-10-19 | 2018-10-19 | Secondary cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208955033U true CN208955033U (en) | 2019-06-07 |
Family
ID=66742032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821699067.9U Active CN208955033U (en) | 2018-10-19 | 2018-10-19 | Secondary cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208955033U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113363639A (en) * | 2021-06-03 | 2021-09-07 | 欣旺达电动汽车电池有限公司 | Battery bottom supporting plate and battery |
| CN114730977A (en) * | 2021-03-24 | 2022-07-08 | 宁德新能源科技有限公司 | Battery and electronic device having the same |
| CN115832547A (en) * | 2022-07-19 | 2023-03-21 | 宁德时代新能源科技股份有限公司 | End cover, end cover assembly, welding method, battery monomer, battery and electric device |
| WO2024001498A1 (en) * | 2022-06-30 | 2024-01-04 | 珠海冠宇电池股份有限公司 | Battery |
-
2018
- 2018-10-19 CN CN201821699067.9U patent/CN208955033U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114730977A (en) * | 2021-03-24 | 2022-07-08 | 宁德新能源科技有限公司 | Battery and electronic device having the same |
| CN113363639A (en) * | 2021-06-03 | 2021-09-07 | 欣旺达电动汽车电池有限公司 | Battery bottom supporting plate and battery |
| CN113363639B (en) * | 2021-06-03 | 2022-10-28 | 欣旺达电动汽车电池有限公司 | Battery bottom supporting plate and battery |
| WO2024001498A1 (en) * | 2022-06-30 | 2024-01-04 | 珠海冠宇电池股份有限公司 | Battery |
| CN115832547A (en) * | 2022-07-19 | 2023-03-21 | 宁德时代新能源科技股份有限公司 | End cover, end cover assembly, welding method, battery monomer, battery and electric device |
| CN115832547B (en) * | 2022-07-19 | 2023-12-15 | 宁德时代新能源科技股份有限公司 | End cover, end cover assembly, welding method, battery cell, battery and power utilization device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208955033U (en) | Secondary cell | |
| KR20210029686A (en) | Button battery for improving utilization rate of radial space | |
| CN104094467B (en) | Battery pack | |
| CN208507798U (en) | Secondary cell and its cover plate assembly | |
| CN1495933A (en) | Secondary cell including improved cover component and plug for secondary cell | |
| CN204760442U (en) | Battery cover plate assembly and use battery of this subassembly | |
| CN108832037A (en) | A kind of button cell | |
| KR20140078812A (en) | Cap Assembly Improved Sealability and Battery Cell Employed with The Same | |
| CN105932193A (en) | Rechargeable battery | |
| CN111463370A (en) | Zinc-air battery | |
| CN208460894U (en) | A kind of single battery core and flexible battery group | |
| CN201274299Y (en) | Ultra-thin button type cell | |
| CN202495486U (en) | Mercury-free zinc-manganese and zinc-silver button battery | |
| CN206471419U (en) | A kind of lithium coin cells with insulation protective jacket | |
| CN111628212A (en) | Soft package lithium ion battery, manufacturing method thereof and electric device | |
| CN209232864U (en) | Button cell | |
| CN208819929U (en) | A kind of button cell | |
| CN207459092U (en) | A kind of button lithium ion battery | |
| CN201041812Y (en) | A battery cover board component and battery | |
| CN205666264U (en) | Alkaline battery sealing ring | |
| CN211265537U (en) | Micro battery | |
| CN211265602U (en) | Button cell | |
| CN2578995Y (en) | Cylindrical lithium ionic battery | |
| CN209515761U (en) | A kind of electrochemical device | |
| CN106299164A (en) | Button type lithium ion battery and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |