CN205881986U - A apron for lithium battery shell body - Google Patents
A apron for lithium battery shell body Download PDFInfo
- Publication number
- CN205881986U CN205881986U CN201620874874.4U CN201620874874U CN205881986U CN 205881986 U CN205881986 U CN 205881986U CN 201620874874 U CN201620874874 U CN 201620874874U CN 205881986 U CN205881986 U CN 205881986U
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- CN
- China
- Prior art keywords
- negative terminal
- board body
- cover board
- lithium battery
- 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
-
- 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
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- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model provides an apron for lithium battery shell body, belongs to lithium bettery member technical field. Including the apron body, the pressure release hole is established at its middle part, establishes the explosion -proof piece of pressure release corresponding to the position in pressure release hole, just, negative pole post location is at the left and right end of apron body, characteristics are: the left end of apron body and corresponding to establishing anodal post positioning mechanism in the position of anodal post, the location is at the left end of apron body down at the state with apron body insulated isolation with anodal post by this positive pole post positioning mechanism, and the right -hand member of apron body and corresponding to establishing negative pole post positioning mechanism in the position of negative pole post is lapped the negative pole post right -hand member of body and is seted up notes liquid hole at the right -hand member of apron body in the location down at the state with apron body insulated isolation by this negative pole post positioning mechanism. Avoid riveting the volume of coming into operation of the adverse effect that stress produced, reduction equipment to the apron body, it is convenient to pouring into electrolyte in the lithium battery shell body into, the structure is terse, the equipment is swift, satisfies the industrialization and enlargies the production requirement.
Description
Technical field
This utility model belongs to lithium battery component technology field, is specifically related to a kind of cover plate for lithium battery casing.
Background technology
As is known in the industry, lithium battery by housing, the shell intracavity being located at housing lithium cell core (by answering of barrier film dielectric separation
Several pieces of positive and negative plates are constituted) and cover plate composition.Owing to lithium battery has, capacity is big, lightweight, be on active service cycle length, energy density
The strong points such as height, memory-less effect, self-discharge rate are low and environmentally friendly, thus thought highly of by industry and be widely used in electricity
Electrical automobile, electric bicycle or even all kinds of hardware & tools, etc..
Lithium battery cover plate is a pith in the structural system of lithium battery and in disclosed Chinese patent literature
In be no lack of and be seen in, slightly with enumerate such as CN203721782U(cover plate of power lithium), the riveting of CN203871392U(integration height
Formula lithium battery cover plate), CN104466043A(cover board for pole type lithium battery and use the post type lithium electricity post of this cover plate) and
CN105810857A(lithium battery cover assembly), etc..
Typical case's " polar plate type lithium battery cover plate " that such as CN202308090U the recommends and " post type of CN102339959A offer
Lithium electricity post cover plate ", being technically characterized in that of these two patents: offer explosionproof hole at the middle part of the length direction of substrate, explosion-proof
The position in hole arranges rupture pressure disc and is arranging cover sheet corresponding to the position above rupture pressure disc, rupture pressure disc and cover sheet it
Between space be configured to pressure releasing chamber, when the pressure of the shell intracavity of lithium battery exceedes setting value, rupture pressure disc explosion and pressure release, to keep away
Exempt from because of lithium battery entirety blast generation accident.But these two patent formula at least exist and lead to fraud at following two: one, due to
Positive and negative pole is all to form electric insulation between cover plate by rivet, rivet clasp is on cover plate, thus a side
Face needs by the special equipment for rivet clasp, causes equipment investment cost big, and on the other hand rivet is easily generated riveting when riveting
Scoop out power and there is the anxiety that undermines cover board body, specifically can be found in CN102339959A description the 0018th section and
The description of CN202308090U the 0020th section；Its two, owing to substrate (i.e. cover board body, as follows) is overall closing knot
Structure, thus the shell chamber injection electrolyte of housing is brought inconvenience.
For above-mentioned prior art, it is necessary to improved, make useful design for this applicant, will be detailed below being situated between
The technical scheme continued produces under this background.
Summary of the invention
Task of the present utility model is to provide one to contribute to abandoning rivet and use and avoid when rivet clasp because rivet clasp should
Power undermines cover board body and the equipment amount of coming into operation that can reduce in the course of processing, is conducive to being held in lithium battery at cover board body
Use, according to electrolyte need to be injected, the convenience embodying fluid injection to the shell intracavity of lithium battery casing under the state of housing to be easy to having
Embody the agility of assembling and use and meet the cover plate for lithium battery casing that industrial amplification production requires.
Task of the present utility model is performed by, a kind of cover plate for lithium battery casing, including a cover plate originally
Body, offers a relief hole at the middle part of the length direction of this cover board body, and this relief hole runs through the thickness direction of cover board body,
A pressure-relief explosion-proof sheet it is provided with in the position corresponding to relief hole；One positive terminal and a negative terminal, positive terminal with described cover plate
Being positioned at the left end of cover board body under the state keeping electric insulation between body, negative terminal is protected equally between cover board body
Being positioned at the right-hand member of cover board body under the state holding electric insulation, feature is: at the left end of described cover board body and in correspondence
Be provided with a positive terminal detent mechanism in the position of described positive terminal, by this positive terminal detent mechanism by positive terminal with cover plate
The left end of cover board body it is positioned at, at the right-hand member of cover board body and corresponding to described negative pole under the state that body is dielectrically separated from
The position of post is provided with a negative terminal detent mechanism, by this negative terminal detent mechanism by negative terminal with cover board body insulation every
From state under be positioned at the right-hand member of cover board body, and offer one for lithium battery casing at the right-hand member of cover board body
Shell intracavity introduces the liquid injection hole of electrolyte.
In a specific embodiment of the present utility model, the structure of described positive terminal is and the structure of described negative terminal
Identical, the structure of described positive terminal detent mechanism is identical with the structure of described negative terminal detent mechanism, and this negative pole
Post detent mechanism includes negative terminal electrode leader seat, negative terminal insulating sleeve, jump ring and negative terminal insulating shield, negative terminal electricity
Pole leader seat corresponding to described cover board body right-hand member towards under side, and offer on this negative terminal electrode leader seat
One negative terminal resigning hole and a liquid-through hole, the negative terminal resigning hole hole that is nested with the isolation of the right-hand member being opened in cover board body is relative
Should, and liquid-through hole is corresponding with described liquid injection hole, negative terminal is dielectrically separated from the position build-in being enclosed within the hole that is nested corresponding to isolation
On cover board body, jump ring corresponding to the position holding above negative terminal insulating sleeve on described negative terminal, negative
Pole insulating shield is nested with outside negative terminal insulating sleeve.
In another specific embodiment of the present utility model, described pressure-relief explosion-proof sheet is aluminium foil.
In another specific embodiment of the present utility model, the thickness of described aluminium foil is 0.3-0.5mm.
In another specific embodiment of the present utility model, described Cover Plate Body Is aluminium sheet.
Also having in a specific embodiment of the present utility model, constituting on the outer wall of described negative terminal has a negative pole
Post jump-ring slot, described jump ring holding is on this jump-ring slot.
Of the present utility model more and in a specific embodiment, expand in the bottom of described negative terminal and be provided with a negative terminal
Electrode leader, and described negative terminal electrode leader seat towards under side and in the position corresponding to negative terminal electrode leader
Constitute and have negative terminal electrode leader positioning chamber, negative terminal electrode leader and this negative terminal electrode leader positioning chamber scarf.
In an of the present utility model and then specific embodiment, offer one in the center of described negative terminal negative
Internal thread of pole column hole, this negative terminal internal thread hole is blind hole.
Of the present utility model the most more and in a specific embodiment, at the right-hand member of described negative terminal electrode leader seat
Before and after side and respectively constitute in corresponding position and have a negative terminal electrode leader seat pivot ear, at this negative terminal electrode leader seat pivot
Pivot hole is offered on ear.
Of the present utility model again and then in a specific embodiment, described negative terminal insulating sleeve is pottery,
And described negative terminal insulating shield is plastics.
The technical scheme that this utility model provides is owing to being in positive terminal and cover board body by positive terminal detent mechanism
It is positioned at the left end of cover board body under the state being dielectrically separated from, by negative terminal detent mechanism, negative terminal is in and cover plate simultaneously
It is positioned at the right-hand member of cover board body under the state that body is dielectrically separated from, thus has abandoned and prior art uses riveting, not only may be used
To avoid riveting the adverse effect that cover board body is produced by stress, and the amount of coming into operation of equipment can be reduced；Due at cover plate originally
Offer liquid injection hole on body, thus electrolyte can have been injected easily in lithium battery case body；Due to positive and negative pole detent mechanism
Structure is terse, assembling is quick, thus can meet industrial amplification production requirement.
Accompanying drawing explanation
Fig. 1 is example structure figure of the present utility model.
Detailed description of the invention
In order to be more clearly understood from technical spirit of the present utility model and beneficial effect, applicant is below with reality
The mode executing example elaborates, but the description to embodiment is not the restriction to this utility model scheme, any foundation
Pro forma rather than the substantial equivalent transformation that is only done by this utility model design is regarded as of the present utility model
Technical scheme category.
The most every relate to upper and lower, left and right, the directivity of front and rear or claim directionality concept be all
For Fig. 1 location state, thus the spy to the technical scheme that this utility model provides can not be understood as
Do not limit.
Refer to Fig. 1, it is shown that a cover board body 1, offer a pressure release at the middle part of the length direction of this cover board body 1
Hole 11, this relief hole 11 runs through the thickness direction of cover board body 1, and the position corresponding to relief hole 11 is provided with a pressure-relief explosion-proof
Sheet 111；Showing positive terminal 2 and a negative terminal 3, positive terminal 2 keeps the shape of electric insulation between carrier board body 1
Being positioned at the left end of cover board body 1 under state, negative terminal 3 keeps determining when electric insulation equally between cover board body 1
Position is at the right-hand member of cover board body 1.
Technical essential as the technical scheme that this utility model provides: at the left end of carrier board body 1 and right
A positive terminal detent mechanism 4 should be provided with in the position of aforementioned positive electrode post 2, by this positive terminal detent mechanism 4, positive terminal 2 be existed
The left end of cover board body 1 it is positioned at, at the right-hand member of cover board body 1 and in correspondence under the state being dielectrically separated from cover board body 1
The position of aforementioned negative terminal 3 is provided with a negative terminal detent mechanism 5, by this negative terminal detent mechanism 5 by negative terminal 3 with
It is positioned at the right-hand member of cover board body 1 under the state that cover board body 1 is dielectrically separated from, and offers one at the right-hand member of cover board body 1
For introducing the liquid injection hole 12 of electrolyte to the shell intracavity of lithium battery casing.
Owing to the structure of aforementioned positive electrode post 2 is identical with the structure of aforementioned negative terminal 3, fixed due to aforesaid positive terminal again
The structure of position mechanism 4 is identical with the structure of aforementioned negative terminal detent mechanism 5, thus applicant's the most only anticathode post 3
And negative terminal detent mechanism 5 elaborates, the structure preferably rather than being definitely limited to of this negative terminal detent mechanism 5 is as follows:
Including negative terminal electrode leader seat 51, negative terminal insulating sleeve 52, jump ring 53 and negative terminal insulating shield 54, negative terminal electrode
Leader seat 51 corresponding to carrier board body 1 right-hand member towards under side, and open on this negative terminal electrode leader seat 51
Be provided with negative terminal resigning hole 511 and a liquid-through hole 512, negative terminal resigning hole 511 be opened in cover board body 1 right-hand member every
From being nested, hole 13 is corresponding, and liquid-through hole 512 is corresponding with aforesaid liquid injection hole 12, and negative terminal insulating sleeve 52 is corresponding to
The position isolating the hole 13 that is nested is mounted on cover board body 1, and jump ring 53 is above corresponding to negative terminal insulating sleeve 52
Position holding is on aforesaid negative terminal 3, and negative terminal insulating shield 54 is nested with outside negative terminal insulating sleeve 52.
In the present embodiment, aforesaid pressure-relief explosion-proof sheet 111 is aluminium foil, is fixedly welded on cover board body 1.
The thickness of aforementioned aluminium foil closes in 0.3-0.5mm, the bearing strength with specific reference to the housing of the lithium battery of different size
Reason changes thickness.
When the pressure in lithium battery case body is once exceed setting value, under pressure, pressure-relief explosion-proof sheet 111 crushes
I.e. bursting, the pressed gas in lithium battery case body releases through relief hole 11.Also can on cover board body 1 also as preferred scheme
And the protective cover of a hollow out is being set corresponding to the position above pressure-relief explosion-proof sheet 111, to avoid the pressure-relief explosion-proof sheet crushed
111 splash and adjacent lithium battery cause secondary harm such as cause short circuit.
In the present embodiment, aforesaid cover board body 1 is aluminium sheet.
As shown in Figure 1, on the outer wall of aforementioned negative terminal 3, composition has a negative terminal jump-ring slot 31, aforesaid jump ring 53 to block
Put on this jump-ring slot 31.Expand in the bottom of aforementioned negative terminal 3 and be provided with a negative terminal electrode leader 32, and at aforementioned negative terminal electricity
Pole leader seat 51 towards under side and corresponding to negative terminal electrode leader 32 position constitute have negative terminal electrode leader
Positioning chamber 513, negative terminal electrode leader 32 and this negative terminal electrode leader positioning chamber 513 scarf.
Offering a negative terminal internal thread hole 33 in the center of aforementioned negative terminal 3, this negative terminal internal thread hole 33 is
Blind hole, the aforesaid same example of positive terminal 2.
Preferably, before and after the right-hand member of aforesaid negative terminal electrode leader seat 51, side and the position in correspondence are respectively constituted
There is a negative terminal electrode leader seat pivot ear 514, this negative terminal electrode leader seat pivot ear 514 offers pivot hole 5141,
By pivot (i.e. bearing pin) by negative terminal electrode leader seat 51 and lithium battery casing pivot joint under use state.
In the present embodiment, aforesaid negative terminal insulating sleeve 52 is pottery, and aforesaid negative terminal insulating shield 54
For plastics.
The most aforementioned, the technical scheme that this utility model provides eliminates the deficiency in prior art, completes invention and appoints
Business, has cashed the technique effect described in applicant's superincumbent technique effect hurdle, a ultimate attainment technology of can yet be regarded as objectively
Scheme.
Claims (10)
1. for the cover plate of lithium battery casing, including a cover board body (1), at the length direction of this cover board body (1)
Middle part offers a relief hole (11), and this relief hole (11) runs through the thickness direction of cover board body (1), corresponding to relief hole
(11) position is provided with a pressure-relief explosion-proof sheet (111)；One positive terminal (2) and a negative terminal (3), positive terminal (2) is with described
Be positioned at the left end of cover board body (1) under the state keeping electric insulation between cover board body (1), negative terminal (3) equally with
The right-hand member of cover board body (1) it is positioned under the state keeping electric insulation between cover board body (1), it is characterised in that: described
The left end of cover board body (1) and be provided with a positive terminal detent mechanism (4), mat in the position corresponding to described positive terminal (2)
By this positive terminal detent mechanism (4), positive terminal (2) is positioned at cover board body when being dielectrically separated from cover board body (1)
(1) left end, at the right-hand member of cover board body (1) and be provided with a negative terminal in the position corresponding to described negative terminal (3) fixed
Position mechanism (5), determines negative terminal (3) when being dielectrically separated from cover board body (1) by this negative terminal detent mechanism (5)
The position right-hand member in cover board body (1), and offer one for the shell intracavity of lithium battery casing at the right-hand member of cover board body (1)
Introduce the liquid injection hole (12) of electrolyte.
Cover plate for lithium battery casing the most according to claim 1, it is characterised in that the structure of described positive terminal (2) is
Identical with the structure of described negative terminal (3), the structure of described positive terminal detent mechanism (4) is and described negative terminal localization machine
The structure of structure (5) is identical, and this negative terminal detent mechanism (5) include negative terminal electrode leader seat (51), negative terminal insulation every
From set (52), jump ring (53) and negative terminal insulating shield (54), negative terminal electrode leader seat (51) corresponds to described cover board body
(1) right-hand member towards under side, and on this negative terminal electrode leader seat (51), offer a negative terminal resigning hole (511)
With a liquid-through hole (512), the isolation of negative terminal resigning hole (511) and the right-hand member being opened in cover board body (1) is nested hole (13) phase
Correspondence, and liquid-through hole (512) is corresponding with described liquid injection hole (12), negative terminal insulating sleeve (52) is corresponding to separation sleeve
The position in embedding hole (13) is mounted on cover board body (1), and jump ring (53) is in the top corresponding to negative terminal insulating sleeve (52)
Position holding on described negative terminal (3), negative terminal insulating shield (54) is nested with at negative terminal insulating sleeve (52) outward.
Cover plate for lithium battery casing the most according to claim 1, it is characterised in that described pressure-relief explosion-proof sheet (111)
For aluminium foil.
Cover plate for lithium battery casing the most according to claim 3, it is characterised in that the thickness of described aluminium foil is 0.3-
0.5mm。
Cover plate for lithium battery casing the most according to claim 1 and 2, it is characterised in that described cover board body (1)
For aluminium sheet.
Cover plate for lithium battery casing the most according to claim 2, it is characterised in that at the outer wall of described negative terminal (3)
Upper composition has a negative terminal jump-ring slot (31), and described jump ring (53) holding is on this jump-ring slot (31).
Cover plate for lithium battery casing the most according to claim 2, it is characterised in that in the bottom of described negative terminal (3)
Expand and be provided with negative terminal electrode leader (32), and described negative terminal electrode leader seat (51) towards under side and in correspondence
Constitute in the position of negative terminal electrode leader (32) and have negative terminal electrode leader positioning chamber (513), negative terminal electrode leader (32)
With this negative terminal electrode leader positioning chamber (513) scarf.
8. according to the cover plate for lithium battery casing described in claim 1 or 2 or 7, it is characterised in that in described negative terminal (3)
Center offer a negative terminal internal thread hole (33), this negative terminal internal thread hole (33) is blind hole.
9. according to the cover plate for lithium battery casing described in claim 2 or 7, it is characterised in that at described negative terminal electrode
Before and after the right-hand member of leader seat (51), side and the position in correspondence are respectively constituted negative terminal electrode leader seat pivot ear (514),
This negative terminal electrode leader seat pivot ear (514) offers pivot hole (5141).
Cover plate for lithium battery casing the most according to claim 2, it is characterised in that described negative terminal is dielectrically separated from
Set (52) is pottery, and described negative terminal insulating shield (54) is plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620874874.4U CN205881986U (en) | 2016-08-12 | 2016-08-12 | A apron for lithium battery shell body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620874874.4U CN205881986U (en) | 2016-08-12 | 2016-08-12 | A apron for lithium battery shell body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205881986U true CN205881986U (en) | 2017-01-11 |
Family
ID=57704187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620874874.4U Active CN205881986U (en) | 2016-08-12 | 2016-08-12 | A apron for lithium battery shell body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205881986U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114365346A (en) * | 2020-05-19 | 2022-04-15 | 宁德时代新能源科技股份有限公司 | End cover assembly, secondary battery, battery module, device, liquid injection method and device |
-
2016
- 2016-08-12 CN CN201620874874.4U patent/CN205881986U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114365346A (en) * | 2020-05-19 | 2022-04-15 | 宁德时代新能源科技股份有限公司 | End cover assembly, secondary battery, battery module, device, liquid injection method and device |
| CN114365346B (en) * | 2020-05-19 | 2023-02-28 | 宁德时代新能源科技股份有限公司 | End cover assembly, secondary battery, battery module, device, liquid injection method and device |
| US11777184B2 (en) | 2020-05-19 | 2023-10-03 | Contemporary Amperex Technology Co., Limited | End cover assembly, secondary battery, battery module, apparatus, liquid-injection method and device |
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