CN205752280U - Battery cap assembly - Google Patents
Battery cap assembly Download PDFInfo
- Publication number
- CN205752280U CN205752280U CN201620742501.1U CN201620742501U CN205752280U CN 205752280 U CN205752280 U CN 205752280U CN 201620742501 U CN201620742501 U CN 201620742501U CN 205752280 U CN205752280 U CN 205752280U
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- Prior art keywords
- nail
- seals
- battery cap
- sealing
- hole
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- 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
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- Filling, Topping-Up Batteries (AREA)
Abstract
The application relates to battery structure technical field, particularly relates to a kind of battery cap assembly.This battery cap assembly includes battery cap and seals nail, described battery cap includes top cover body and boss, described boss is fixed on described top cover body, the through described top cover body of described liquid injection hole and described boss, liquid injection hole is offered on described battery cap, the described nail that seals coordinates with the sealing of described liquid injection hole, described sealing nail includes that the first sealing nail and second seals nail, described first seals nail is positioned at the described second top sealing nail, the described second at least some of outer layer sealing nail is plastic layer, and the described first lower surface sealing nail offers escape groove.This battery cap assembly can improve first sealing nail assembly precision in liquid injection hole.
Description
Technical field
The application relates to battery structure technical field, particularly relates to a kind of battery cap assembly.
Background technology
Battery cap is one of important component part of battery, and it generally offers liquid injection hole, and this liquid injection hole is used for injecting
Electrolyte.In order to ensure the sealing at liquid injection hole, need at this liquid injection hole, squeeze into sealing nail.
Above-mentioned sealing nail generally comprises the first sealing nail and is positioned at the second sealing nail below the first sealing nail, when second is close
When the outer layer of envelope nail is metal, the second sealing nail sealing easily produces metal fragment when being matched with liquid injection hole, and metal fragment is fallen into
Can affect the security performance of battery in battery container, therefore the second outer layer sealing nail often uses plastic material.But, due to
Plastics are susceptible to deformation, therefore the second sealing nail are pressed downward to liquid injection hole thus are allowed to sealing when being matched with in liquid injection hole,
Second outer layer plastic sealing nail there will be deformation, and this deformation will make the outer layer plastic of the second sealing nail beyond the second sealing
The upper surface of nail, affects first sealing nail assembly precision in liquid injection hole then.
Utility model content
This application provides a kind of battery cap assembly, to improve first sealing nail assembly precision in liquid injection hole.
The battery cap assembly that the application provides includes battery cap and seals nail, and described battery cap includes top cover body
And boss, described boss is fixed on described top cover body, and described battery cap is offered liquid injection hole, the through institute of described liquid injection hole
Stating top cover body and described boss, described sealing nail seals with described liquid injection hole and coordinates, and described sealing nail includes the first sealing nail
Sealing nail with second, described first seals nail is positioned at the described second top sealing nail, and described second seals at least of nail
Exceptionally layer is plastic layer, and the described first lower surface sealing nail offers escape groove.
Preferably, described first seals nail forms split-type structural with described second sealing nail, and described escape groove is along institute
State the axially positioned opposite with described second sealing nail of liquid injection hole.
Preferably, described first seals nail forms integral structure with described second sealing nail, and described escape groove is annular
Groove, described escape groove is surrounded on the described first junction sealing nail and described second sealing nail.
Preferably, described boss is fixed on the lower surface of described top cover body downwardly convex.
Preferably, described liquid injection hole includes that the first hole section and the second hole section, described first hole section are positioned at described second hole section
Top, described first hole section and described second hole section be connected to form shoulder hole, and the minimum-value aperture of described first hole section is more than institute
Stating the maximum diameter of hole of the second hole section, described first seals nail sealing is matched with described first hole section.
Preferably, described first hole section is bellmouth, and/or, described second hole section is cylindrical hole.
Preferably, described first the upper surface of nail and the upper surface flush of described top cover body are sealed.
Preferably, described second seals nail includes coordinating section and overhanging section, and described cooperation section coordinates with described second hole section,
The described overhanging section of lower surface beyond described boss.
Preferably, described second sealing nail includes that inner metallic layer and plastic outer layer, described inner metallic layer and plastic outer layer are solid
Fixed connection.
Preferably, generally continuously connected fastener is followed closely in described second sealing.
The technical scheme that the application provides can reach following beneficial effect:
In battery cap assembly provided herein, sealing nail and include that the first sealing nail and second seals nail, first is close
The lower surface of envelope nail offers escape groove, sealing is bound when being assigned in liquid injection hole, even if second seals nail and deform, above-mentioned keeps away
Allow groove can also accommodate the crushed element of the second sealing nail so that the second deformation sealing nail will not be to the first position sealing nail
Produce impact, improve first sealing nail assembly precision in liquid injection hole with this.
It should be appreciated that it is only exemplary that above general description and details hereinafter describe, can not be limited this
Application.
Accompanying drawing explanation
The explosive view of the battery cap assembly that Fig. 1 is provided by the embodiment of the present application；
The top view of the battery cap assembly that Fig. 2 is provided by the embodiment of the present application；
The sectional view of the battery cap assembly that Fig. 3 is provided by the embodiment of the present application；
Fig. 4 is the part A enlarged drawing of structure shown in Fig. 3；
The structural representation of the first sealing nail that Fig. 5 is provided by the embodiment of the present application；
Fig. 6 is the sectional view of structure shown in Fig. 5；
A kind of structural representation sealing nail that Fig. 7 is provided by the embodiment of the present application；
Fig. 8 is the front view of structure shown in Fig. 7；
Fig. 9 is the side view of structure shown in Fig. 7；
Figure 10 is the top view of structure shown in Fig. 7；
Figure 11 is the sectional view of structure shown in Fig. 7.
Reference:
10-liquid injection hole；
20-top cover body；
30-boss；
40-seals nail；
400-first seals nail；
400a-escape groove；
401-second seals nail；
401a-coordinates section；
Overhanging section of 401b-.
Accompanying drawing herein is merged in description and constitutes the part of this specification, it is shown that meet the enforcement of the application
Example, and for explaining the principle of the application together with description.
Detailed description of the invention
Below by specific embodiment and combine accompanying drawing the application is described in further detail.
As shown in figs. 1-11, the embodiment of the present application provides a kind of battery cap assembly, and it includes battery cap and sealing
Nail 40, this battery cap is offered liquid injection hole 10, and this liquid injection hole 10 is used for injecting the electrolyte in battery, seals nail 40 and fluid injection
Hole 10 seals and coordinates.Sealing nail 40 and include that the first sealing nail 400 and second seals nail 401, it is close that the first sealing nail 400 is positioned at second
The top of envelope nail 401, the second at least some of outer layer sealing nail 401 is plastic layer, and the first lower surface sealing nail 400 is offered
Escape groove 400a, this escape groove 400a is for accommodating the crushed element of the second sealing nail 401.
Battery cap includes that top cover body 20 and boss 30, top cover body 20 are platy structure, and boss 30 is fixed on top cover
On body 20, liquid injection hole 10 through top cover body 20 and boss 30.Liquid injection hole 10 can coordinate with sealing nail 40 sealing, leads to this
Cross sealing nail 40 and realize the sealing at liquid injection hole 10.
The shape of boss 30 can select flexibly, such as when liquid injection hole 10 is circular port, boss 30 it can also be provided that
Round platform, obtains a kind of easier processing, greater compactness of battery cap then.
When sealing nail 40 is assemblied in liquid injection hole 10, even if second seals nail 401 and deforms, above-mentioned escape groove 400a
The crushed element of the second sealing nail 401 can also be accommodated so that the second deformation sealing nail 401 will not seal nail 400 to first
Position produce impact, with this improve first sealing nail 400 assembly precisions in liquid injection hole 10.Further, since the application is real
Execute example provide battery cap add boss 30, this boss 30 can increase the hole depth of liquid injection hole 10 so that seal nail 40 with
Cooperation area between liquid injection hole 10 increases, and seals after nail 40 coordinates with this liquid injection hole 10 and is just not easy relative play occur, with
This improves the sealing at liquid injection hole 10.
Above-mentioned sealing nail 40 can use but be not limited to following several version:
The first, first seals nail 400 and second seals nail 401 formation split-type structural, and escape groove 400a is along fluid injection
It is positioned opposite that axial and second sealing in hole 10 follows closely 401.After sealing nail 40 employing split-type structural, first seals nail 400 Hes
Second seals nail 401 can individually process so that machining accuracy between the two is not easy to interact, and improves first with this close
Envelope nail 400 and second seals the quality of fit between nail 401 and liquid injection hole 10, reach to improve the sealing at liquid injection hole 10 this
Effect.Specifically, first seals nail 400 can use disk-like structure, and the second sealing nail 401 can use column structure, dodges
Groove 400a caves in the direction sealing nail 401 away from second, and, the inner space of escape groove 400a extends to the second sealing nail
Seal nail 400 relative surfaces with first on 401.
The second, first seals nail 400 and second seals nail and 401 is assembled into integral structure, and escape groove 400a be annular
Groove, escape groove 400a is surrounded on the first sealing nail 400 and second and seals the junction following closely 401.The structure that this kind seals nail 40 is strong
Spend the highest.Integral structure herein refers to each several part and combines, and can only be taken apart by strength.
It is to be appreciated that above-mentioned boss 30 is fixed in the upper and lower surface of top cover body 20, can realize
Liquid injection hole 10 this purpose is deepened by boss 30.The upper and lower surface of this top cover body 20, with reference to shown in Fig. 4, works as battery
After cap assembly is together with other in secondary cell are partially assembled into, this lower surface is to accommodate the one of chamber near electrolyte
Side, upper surface is the side accommodating chamber away from electrolyte, say, that when producing battery cap, top cover body 20 relative
Both sides are defined relative to the position in electrolyte receiving chamber after installing according to it.If boss 30 is fixed on top cover body 20
Upper surface, then after battery cap assembling, boss 30 is in the state of exposing, and causes boss 30 easily to be collided with other parts
Hit, be then susceptible to damage.
In order to alleviate the problems referred to above, boss 30 can be fixed on the lower surface of top cover body 20, and boss 30 is downwardly convex.
After other parts of battery cap assembly Yu secondary cell are mounted together, boss 30 is positioned at the inside of battery, outside zero
Parts cannot collide with boss 30, also ensures that boss 30 to be not easy because of collision and is damaged.
Above-mentioned liquid injection hole 10 is chosen as cylindrical hole, it is also possible to select other structures.In a kind of embodiment, this liquid injection hole 10 can
To include the first hole section and the second hole section, the first hole section is positioned at the top of the second hole section, the first hole section and the second hole section and is connected shape
Becoming shoulder hole, first seals nail 401 sealing is matched with the first hole section, and the minimum-value aperture of the first hole section is more than the maximum of the second hole section
Aperture, aperture herein refers to the first hole section and second hole section size on self cross section.When the first hole section and second
When hole section is variable cross-section hole, determine minimum-value aperture herein and maximum diameter of hole according to both concrete shapes；When the first hole section and
When second hole section is uiform section hole, minimum-value aperture herein and maximum diameter of hole are both cross sectional dimensions.
First, after the first hole section and the second hole section form shoulder hole, the first hole section can be that fluid injection operation provides bigger
Space, in order to implement fluid injection operation；On this basis, relatively big, therefore by the first hole due to the volume of top cover body 20 itself
Section is opened on top cover body 20, and when being possible to prevent the size of the first hole section bigger, the structural strength for top cover body 20 produces
Negative effect.And the size of the second hole section is less, the size of boss 30 is excessive also without arrange, the most just can be by second
Hole section is opened on boss 30, or the second hole section is opened on a part and the whole boss 30 of top cover body 20.
Alternatively, above-mentioned first hole section may be configured as bellmouth, increase further liquid injection hole 10 with this with seal nail 40 it
Between sealing area.In view of feasibility when coordinating with sealing nail 40, the small end of this bellmouth is connected with the second hole section,
Bigger end is located remotely from electrolyte and accommodates the side in chamber.And the second hole Duan Ze may be configured as cylindrical hole, in order to liquid injection hole 10 leads to
Cross the mode such as threaded and seal nail 40 sealing and coordinate.
In order to prevent sealing nail 40 from colliding with other parts, the first upper surface sealing nail 40 can with top cover originally
The upper surface flush of body 20.Specifically, the first upper surface sealing nail 40 refers to accommodate on it the one of chamber away from electrolyte
The surface of side, this surface can be plane；The upper surface of top cover body 20 refers to accommodate on it side in chamber away from electrolyte
Surface, this surface can also be plane.
When the second hole section is positioned on battery cap and accommodates the side in chamber near electrolyte, second seals nail 401 can wrap
Including cooperation section 401a and overhanging section of 401b, this cooperation section 401a and the second hole section to coordinate, overhanging section of 401b exceeds boss 30 times
Surface.In this embodiment, the existence of overhanging section of 401b will extend the whole second length sealing nail 401, in processing the second sealing
When following closely 401, overhanging section of 401b can improve the clamping reliability of the second sealing nail 401, simplifies adding of the second sealing nail 401 with this
Work technique, improves the machining accuracy of the second sealing nail 401.
Further, guiding concave surface can be offered in the side of above-mentioned overhanging section of 401b, this guiding concave surface is near overhanging
The direction depression of the axis of section 401b.After arranging guiding concave surface, the cross sectional dimensions of overhanging section of 401b will reduce, and install
When sealing nail 40, overhanging section of 401b initially enters in liquid injection hole 10, owing to the size of overhanging section of 401b is less so that overhanging section
401b is easier to enter in liquid injection hole 10, travels further into liquid injection hole 10 offer as sealing nail 40 and guides.Therefore, this guiding
Concave surface can improve the efficiency of assembling sealing nail 40.
As illustrated in figures 7-11, aforementioned second seals nail 401 can include inner metallic layer and plastic outer layer, this inner metallic layer and
Plastic outer layer is fixing to be connected, and obtains a kind of structural strength higher second with this and seals nail 401.Certainly, second nail 401 is sealed also
Can generally continuously connected fastener, improve the sealing between the second sealing nail 401 and liquid injection hole 10 with this.
The foregoing is only the preferred embodiment of the application, be not limited to the application, for the skill of this area
For art personnel, the application can have various modifications and variations.All within spirit herein and principle, that is made any repaiies
Change, equivalent, improvement etc., within should be included in the protection domain of the application.
Claims (10)
1. a battery cap assembly, it is characterised in that include battery cap and seal nail, described battery cap includes that top cover is originally
Body and boss, described boss is fixed on described top cover body, and described battery cap is offered liquid injection hole, and described liquid injection hole is through
Described top cover body and described boss, described sealing nail seals with described liquid injection hole and coordinates, and described sealing nail includes the first sealing
Nail and second seals nail, and described first seals nail is positioned at the described second top sealing nail, and described second seals at least the one of nail
Portion outer layer is plastic layer, and the described first lower surface sealing nail offers escape groove.
Battery cap assembly the most according to claim 1, it is characterised in that described first seals nail and described second seals
Nail forms split-type structural, and it is positioned opposite that described escape groove seals nail along the axial of described liquid injection hole and described second.
Battery cap assembly the most according to claim 1, it is characterised in that described first seals nail and described second seals
Nail forms integral structure, and described escape groove is cannelure, and described escape groove is surrounded on described first and seals nail and described second
Seal the junction of nail.
Battery cap assembly the most according to claim 1, it is characterised in that described boss is fixed on described top cover body
Lower surface is the most downwardly convex.
Battery cap assembly the most according to claim 4, it is characterised in that described liquid injection hole includes the first hole section and second
Hole section, described first hole section is positioned at the top of described second hole section, described first hole section and described second hole section and is connected to form rank
Ladder hole, the minimum-value aperture of described first hole section is more than the maximum diameter of hole of described second hole section, and described first seals nail sealing coordinates
In described first hole section.
Battery cap assembly the most according to claim 5, it is characterised in that described first hole section is bellmouth, and/or,
Described second hole section is cylindrical hole.
Battery cap assembly the most according to claim 5, it is characterised in that described first seals the upper surface of nail with described
The upper surface flush of top cover body.
Battery cap assembly the most according to claim 5, it is characterised in that described second seals nail includes coordinating section with outer
The section of stretching, described cooperation section coordinates with described second hole section, the described overhanging section of lower surface beyond described boss.
Battery cap assembly the most according to claim 3, it is characterised in that described second seal nail include inner metallic layer and
Plastic outer layer, described inner metallic layer and described plastic outer layer are fixing to be connected.
10. according to the battery cap assembly according to any one of claim 1-8, it is characterised in that described second sealing nail is whole
Body is continuously connected fastener.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620742501.1U CN205752280U (en) | 2016-07-14 | 2016-07-14 | Battery cap assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620742501.1U CN205752280U (en) | 2016-07-14 | 2016-07-14 | Battery cap assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205752280U true CN205752280U (en) | 2016-11-30 |
Family
ID=57378810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620742501.1U Active CN205752280U (en) | 2016-07-14 | 2016-07-14 | Battery cap assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205752280U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107978700A (en) * | 2017-12-28 | 2018-05-01 | 桑德集团有限公司 | A kind of cover board and metal shell for metal battery case |
| CN108134015A (en) * | 2018-03-19 | 2018-06-08 | 上海力信能源科技有限责任公司 | A kind of battery structure |
| CN113193276A (en) * | 2021-04-27 | 2021-07-30 | 宁德新能源科技有限公司 | Hard shell battery and power utilization device |
| WO2022047652A1 (en) * | 2020-09-02 | 2022-03-10 | 宁德时代新能源科技股份有限公司 | End cover assembly, battery cell, battery, powered device, and liquid injection method |
-
2016
- 2016-07-14 CN CN201620742501.1U patent/CN205752280U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107978700A (en) * | 2017-12-28 | 2018-05-01 | 桑德集团有限公司 | A kind of cover board and metal shell for metal battery case |
| CN108134015A (en) * | 2018-03-19 | 2018-06-08 | 上海力信能源科技有限责任公司 | A kind of battery structure |
| WO2022047652A1 (en) * | 2020-09-02 | 2022-03-10 | 宁德时代新能源科技股份有限公司 | End cover assembly, battery cell, battery, powered device, and liquid injection method |
| CN113193276A (en) * | 2021-04-27 | 2021-07-30 | 宁德新能源科技有限公司 | Hard shell battery and power utilization device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |