CN206650107U - Battery cap component and secondary cell - Google Patents

Battery cap component and secondary cell Download PDF

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Publication number
CN206650107U
CN206650107U CN201720418532.6U CN201720418532U CN206650107U CN 206650107 U CN206650107 U CN 206650107U CN 201720418532 U CN201720418532 U CN 201720418532U CN 206650107 U CN206650107 U CN 206650107U
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China
Prior art keywords
convex closure
cap component
battery cap
matrix part
burst disk
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CN201720418532.6U
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Chinese (zh)
Inventor
王佳军
王鹏
蔡如来
来佑磊
王宝玉
郑于炼
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Contemporary Amperex Technology Co Ltd
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Contemporary Amperex Technology Co Ltd
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Priority to CN201720418532.6U priority Critical patent/CN206650107U/en
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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

Abstract

The utility model provides a kind of battery cap component and secondary cell.Battery cap component includes：Coping plate, there is matrix part and be connected to matrix part and the convex closure protruded relative to matrix part, convex closure is provided with the explosionproof hole of insertion；And burst disk, it is fixed on convex closure and sealed explosion-proof hole.Wherein, convex closure is projected upwards relative to matrix part in the height direction, and the cavity being recessed upwards relative to matrix part is formed in the downside of convex closure；Or convex closure is downwardly projected relative to matrix part in the height direction, and the cavity relative to matrix part to lower recess is formed in the upside of convex closure.Secondary cell includes：Battery cap component described in the utility model first aspect；Shell, it is assemblied in downside of the battery cap component along short transverse；And battery core, it is housed in shell.Battery cap component and secondary cell of the present utility model can improve the stability of burst disk and the security of secondary cell, reduce processing cost.

Description

Battery cap component and secondary cell
Technical field
It the utility model is related to field of batteries, more particularly to a kind of battery cap component and secondary cell.
Background technology
In current secondary cell, in order to prevent secondary cell from being exploded in abnormal aerogenesis, it is necessary to be set on coping plate Burst disk is put, discharges gas in abnormal aerogenesis for secondary cell.But secondary cell also can during normal use Gas is produced, with the gradual increase of secondary cell air pressure inside, deformation occurs in coping plate, because burst disk is fixed on top cover On piece, therefore the deformation of coping plate can apply tension to the surrounding of burst disk.When the tension that coping plate applies to burst disk When excessive, the actual burst pressure of burst disk can be made much to deviate from theoretical burst pressure, such as secondary cell air pressure inside is also Not up to the burst pressure setting value of burst disk when just ruptured, so as to which reduce burst disk and secondary cell uses the longevity Life.
Utility model content
In view of problem present in background technology, the purpose of this utility model is to provide a kind of battery cap component and two Primary cell, it can improve the stability of burst disk and the security of secondary cell, reduce processing cost.
To achieve these goals, in a first aspect, the utility model provides a kind of battery cap component, it includes： Coping plate, there is matrix part and be connected to matrix part and the convex closure protruded relative to matrix part, convex closure is provided with the explosion-proof of insertion Hole；And burst disk, it is fixed on convex closure and sealed explosion-proof hole.Wherein, convex closure is dashed forward upwards relative to matrix part in the height direction Go out, and the cavity being recessed upwards relative to matrix part is formed in the downside of convex closure；Or convex closure is in the height direction relative to base Body portion is downwardly projected, and forms the cavity relative to matrix part to lower recess in the upside of convex closure.
To achieve these goals, in second aspect, the utility model provides a kind of secondary cell, and it includes：This reality With the battery cap component described in new first aspect；Shell, it is assemblied in downside of the battery cap component along short transverse；And Battery core, it is housed in shell.
The beneficial effects of the utility model are as follows：
According in battery cap component of the present utility model and secondary cell, by setting convex closure can be with coping plate The non-deformability of coping plate is improved, reduces the deflection of coping plate when secondary cell air pressure inside gradually increases, therefore can Reduce the tension that the burst disk for being fixed on convex closure is delivered to during coping plate deformation, it is quick-fried to burst disk so as to eliminate coping plate deformation The influence of broken pressure.Meanwhile the structure of convex closure is easy to punch forming, technique is simple, and processing cost is low.
Brief description of the drawings
Fig. 1 is the upward view of the battery cap component of prior art；
Fig. 2 is the sectional view that D-D makes along Fig. 1；
Fig. 3 is the upward view according to an embodiment of battery cap component of the present utility model；
Fig. 4 is the sectional view that E-E makes along Fig. 3；
Fig. 5 is the enlarged drawing of Fig. 4 dotted box portions；
Fig. 6 is the schematic diagram according to the burst disk of battery cap component of the present utility model；
Fig. 7 is the upward view according to another embodiment of battery cap component of the present utility model；
Fig. 8 is the sectional view that F-F makes along Fig. 7；
Fig. 9 is the enlarged drawing of Fig. 8 dotted box portions；
Figure 10 is the schematic diagram of the boss in the convex closure according to battery cap component of the present utility model.
Figure 11 is the schematic diagram according to secondary cell of the present utility model.
Wherein, description of reference numerals is as follows：
1 coping plate A battery cap components
11 matrix part B shells
12 convex closure C battery cores
121 explosionproof hole S cavitys
122 boss G indentations
1221 through slot Z1 protrude area
2 burst disk Z2 transition regions
21 fixed part W widths
22 weak point H short transverses
23 central part L length directions
3 protection pasters
Embodiment
Describe battery cap component and secondary cell of the present utility model in detail with reference to the accompanying drawings.
Illustrate the battery cap component according to the utility model first aspect first.
Referring to figs. 1 to Figure 11, included according to battery cap component A of the present utility model：Coping plate 1, there is matrix part 11 And matrix part 11 and the convex closure 12 protruded relative to matrix part 11 are connected to, convex closure 12 is provided with the explosionproof hole 121 of insertion；And Burst disk 2, it is fixed on convex closure 12 and sealed explosion-proof hole 121.Wherein, convex closure 12 in short transverse H relative to matrix part 11 to Upper protrusion, and the cavity S being recessed upwards relative to matrix part 11 is formed in the downside of convex closure 12；Or convex closure 12 is in height side It is downwardly projected on to H relative to matrix part 11, and the cavity relative to matrix part 11 to lower recess is formed in the upside of convex closure 12 S。
According in battery cap component A of the present utility model, by setting convex closure 12 to improve top on coping plate 1 The non-deformability of cover plate 1, reduces the deflection of coping plate when secondary cell air pressure inside gradually increases, therefore can reduce top Cover plate 1 is delivered to the tension for the burst disk 2 for being fixed on convex closure 12 when deforming, so as to eliminate coping plate deformation to burst disk explosion The influence of pressure.Meanwhile this structure (side protrudes side depression) of convex closure 12 is easy to punch forming, technique is simple, processing Cost is low.
The preferred convex closures 12 of battery cap component A of the present utility model are dashed forward upwards in short transverse H relative to matrix part 11 Go out, the cavity S being recessed upwards relative to matrix part 11 is formed in the downside of convex closure 12.In the secondary cell of shaping, battery top Cap assemblies A is located at the top of secondary cell, and the downside of convex closure 12 is located inside secondary cell and bears air pressure inside, so upwards The cavity S of the depression space that can be improved inside secondary cell so that more gases can be accommodated inside secondary cell, are subtracted The growth rate of slow secondary cell air pressure inside, so as to extend the service life of burst disk 2.
According in battery cap component A of the present utility model, reference picture 5 and Fig. 9, convex closure 12 have prominent area Z1 and The prominent area Z1 of connection and matrix part 11 transition region Z2, and transition region Z2 is bent relative to matrix part 11, explosionproof hole 121 is arranged on Prominent area Z1；Burst disk 2 is fixed on prominent area Z1.Prominent area Z1 is more smooth relative to transition region Z2, is easy to the peace of burst disk 2 Dress.
According in battery cap component A of the present utility model, reference picture 3 and Fig. 7, projected along short transverse H, burst disk 2 shape is identical with the shape of convex closure 12.Therefore, burst disk 2 is easier to coordinate with convex closure 12, simplifies the erector of burst disk 2 Skill.
According in battery cap component A of the present utility model, reference picture 5 and Fig. 9, along short transverse H, convex closure 12 it is upper Side is provided with boss 122 protruding upward, and boss 122 is looped around around explosionproof hole 121.It is preferred that set in the protrusion area Z1 of convex closure 12 Put boss 122.Boss 122 can further improve the non-deformability of convex closure 12, reduce coping plate 1 and deform to burst disk 2 Influence, prevent the fatigue failure of burst disk 2, improve the stability of burst disk 2.Meanwhile in the forming process of secondary cell, boss 122 electrolyte being also avoided that on the matrix part 11 for remaining in coping plate 1 flow into explosionproof hole 121.
According in battery cap component A of the present utility model, reference picture 5 and Fig. 9, the battery cap component A are also wrapped Include：Paster 3 is protected, the top of boss 122 is fixed on and covers explosionproof hole 121, burst disk 2 is fixed on the downside of convex closure 12.Protect Shield paster 3 can avoid external foreign matter from entering explosionproof hole 121, prevent explosionproof hole 121 from being corroded or being punctured by external foreign matter.
According in battery cap component A of the present utility model, reference picture 5, Fig. 9 and Figure 10, boss 122 are provided with insertion Groove 1221, the receiving space between burst disk 2 and protection paster 3 are in communication with the outside by through slot 1221.When burst disk 2 with it is convex , it is necessary to detect the air-tightness between burst disk 2 and convex closure 12 after bag 12 links together, if protecting paster 3 by the He of burst disk 2 Receiving space between protection paster 3 completely encloses, then protects paster 3 to separate burst disk 2 with the external world, influences air-tightness inspection The accuracy of survey is (if the air-tightness that burst disk 2 protects paster 3 to be connected with boss 122 with poor air-tightness that convex closure 12 is connected Good, then the air-tightness result detected can be qualified), therefore, by setting through slot 1221 this to avoid on boss 122 Situation.
In the embodiment according to battery cap component A of the present utility model, explosionproof hole 121 is track type, and explosion-proof W extends the straightway in hole 121 in the width direction；In another embodiment, explosionproof hole 121 is oval, and the length of explosionproof hole 121 W extends axle in the width direction.Due to explosionproof hole 121 straightway in the width direction the major axis of W extensions or explosionproof hole 121 along width Direction W extends, and explosionproof hole 121 can maximally utilise the width W of coping plate 1 on the premise of leaving area is ensured Space, reduce the space that explosionproof hole 121 takes the length direction L of coping plate 1, so as to be positive terminal and negative terminal along coping plate 1 length direction L, which is set, provides space.Meanwhile the straightway L extensions along its length compared to explosionproof hole 121 or explosionproof hole The scheme of 121 major axis L extensions along its length, battery cap component A of the present utility model explosionproof hole 121 can be further Reduce influence of the deformation of coping plate 121 to the burst pressure of burst disk 2.
According in battery cap component A of the present utility model, reference picture 5, Fig. 6 and Fig. 9, burst disk 2 have fixed part 21st, weak point 22 and central part 23, the connecting portion 21 of weak point 22 and central part 23, fixed part 21 is fixed with convex closure 12 to be connected Connect；Projected along short transverse H, the shape of weak point 22 is identical with the shape of explosionproof hole 121, and the projection of weak point 22 is positioned at anti- Within the projection of blast hole 121.When the air pressure inside of secondary cell increased dramatically, hyperbar can thrust weak point 22 so that Central part 23 departs from fixed part 21, so as to form a perforate for gases at high pressure discharge.Central part 23 is bigger, and formation is opened Hole is also bigger, and the effect of exhaust is better.
According in battery cap component A of the present utility model, reference picture 5, Fig. 6 and Fig. 9, in the upper surface of burst disk 2 Provided with indentation G, and indentation G is located at weak point 22.Because indentation G is located at weak point 22, so the low intensity of weak point 22, in height Easily it is thrust in the presence of air pressure.
Secondly the secondary cell according to the utility model second aspect is illustrated.
Referring to figs. 1 to Figure 11, included according to secondary cell of the present utility model：Electricity described in the utility model first aspect Pond cap assembly A；Shell B, it is assemblied in downsides of the battery cap component A along short transverse H；And battery core C, it is housed in shell B It is interior.
According in secondary cell of the present utility model, by setting convex closure 12 to improve coping plate 1 on coping plate 1 Non-deformability, reduce the deflection of secondary cell air pressure inside coping plate 1 when gradually increasing, therefore coping plate can be reduced The tension for the burst disk 2 for being fixed on convex closure 12 is delivered to during 1 deformation, so as to eliminate coping plate deformation to burst disk burst pressure Influence.Meanwhile the structure of convex closure 12 is easy to punch forming, technique is simple, and processing cost is low.
According in secondary cell of the present utility model, the downside of convex closure 12 is located inside secondary cell and bears internal gas Pressure, it is advantageous to convex closure 12, and there is the cavity S being recessed upwards, cavity S can improve the space inside secondary cell so that secondary Inside battery can accommodate more gases, slow down the growth rate of secondary cell air pressure inside, so as to extend making for burst disk 2 Use the life-span.
Supplementary notes, width W, short transverse H and length direction L are three directions for meeting vertical.

Claims (10)

  1. A kind of 1. battery cap component (A), it is characterised in that including：
    Coping plate (1), there is matrix part (11) and be connected to matrix part (11) and the convex closure protruded relative to matrix part (11) (12), convex closure (12) is provided with the explosionproof hole (121) of insertion；And
    Burst disk (2), it is fixed on convex closure (12) and sealed explosion-proof hole (121)；
    Wherein,
    Convex closure (12) projects upwards in short transverse (H) relative to matrix part (11), and forms phase in the downside of convex closure (12) The cavity (S) being recessed upwards for matrix part (11)；Or
    Convex closure (12) is downwardly projected in short transverse (H) relative to matrix part (11), and forms phase in the upside of convex closure (12) Cavity (S) for from matrix part (11) to lower recess.
  2. 2. battery cap component (A) according to claim 1, it is characterised in that
    Convex closure (12) has prominent area (Z1) and the transition region (Z2) of connection prominent area (Z1) and matrix part (11), and transition region (Z2) bent relative to matrix part (11), explosionproof hole (121) is arranged on prominent area (Z1)；Burst disk (2) is fixed on prominent area (Z1)。
  3. 3. battery cap component (A) according to claim 1, it is characterised in that projected along short transverse (H), burst disk (2) shape is identical with the shape of convex closure (12).
  4. 4. battery cap component (A) according to claim 1, it is characterised in that along short transverse (H), convex closure (12) Upside is provided with boss (122) protruding upward, and boss (122) is looped around around explosionproof hole (121).
  5. 5. battery cap component (A) according to claim 4, it is characterised in that the battery cap component (A) is also wrapped Include：
    Paster (3) is protected, the top of boss (122) is fixed on and covers explosionproof hole (121), burst disk (2) is fixed on convex closure (12) downside.
  6. 6. battery cap component (A) according to claim 5, it is characterised in that boss (122) is provided with through slot (1221), the receiving space between burst disk (2) and protection paster (3) is in communication with the outside by through slot (1221).
  7. 7. battery cap component (A) according to claim 1, it is characterised in that
    Explosionproof hole (121) is track type, and (W) extends the straightway of explosionproof hole (121) in the width direction；Or
    Explosionproof hole (121) is ellipse, and (W) extends the major axis of explosionproof hole (121) in the width direction.
  8. 8. battery cap component (A) according to claim 7, it is characterised in that burst disk (2) have fixed part (21), Weak point (22) and central part (23), weak point (22) connecting portion (21) and central part (23), fixed part (21) with it is convex Bag (12) is fixedly connected；Projected along short transverse (H), the shape of weak point (22) is identical and thin with the shape of explosionproof hole (121) The projection of weak portion (22) is located within the projection of explosionproof hole (121).
  9. 9. battery cap component (A) according to claim 8, it is characterised in that be provided with and carve in the upper surface of burst disk (2) Trace (G), and indentation (G) is located at weak point (22).
  10. A kind of 10. secondary cell, it is characterised in that including：
    According to battery cap component (A) according to any one of claims 1 to 9；
    Shell (B), it is assemblied in downside of the battery cap component (A) along short transverse (H)；And
    Battery core (C), it is housed in shell (B).
CN201720418532.6U 2017-04-20 2017-04-20 Battery cap component and secondary cell Active CN206650107U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720418532.6U CN206650107U (en) 2017-04-20 2017-04-20 Battery cap component and secondary cell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720418532.6U CN206650107U (en) 2017-04-20 2017-04-20 Battery cap component and secondary cell

Publications (1)

Publication Number Publication Date
CN206650107U true CN206650107U (en) 2017-11-17

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CN201720418532.6U Active CN206650107U (en) 2017-04-20 2017-04-20 Battery cap component and secondary cell

Country Status (1)

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CN (1) CN206650107U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023051569A1 (en) * 2021-09-29 2023-04-06 蜂巢能源科技股份有限公司 Polished aluminum sheet for lithium battery, top cover, and lithium battery
CN116014349A (en) * 2023-02-09 2023-04-25 深圳海润新能源科技有限公司 End cover assembly, energy storage device and electric equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023051569A1 (en) * 2021-09-29 2023-04-06 蜂巢能源科技股份有限公司 Polished aluminum sheet for lithium battery, top cover, and lithium battery
CN116014349A (en) * 2023-02-09 2023-04-25 深圳海润新能源科技有限公司 End cover assembly, energy storage device and electric equipment

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