CN211295161U - Flat plate type high-capacity high-performance lithium battery cover plate - Google Patents
Flat plate type high-capacity high-performance lithium battery cover plate Download PDFInfo
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- CN211295161U CN211295161U CN202020053643.3U CN202020053643U CN211295161U CN 211295161 U CN211295161 U CN 211295161U CN 202020053643 U CN202020053643 U CN 202020053643U CN 211295161 U CN211295161 U CN 211295161U
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- insulating pad
- lithium battery
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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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Abstract
The utility model discloses a flat high capacity high performance lithium cell apron, it includes insulating pad down, pastes the apron that sets up, sets up the electrode subassembly on the apron upper surface mutually with insulating pad surface down, is provided with to support corresponding to the electrode subassembly position on the apron and sinks the platform, along supporting the spacing fender portion that encloses that the peripheral upwards extends the setting of platform, by supporting the platform and the spacing fender portion that encloses that is used for assembling around forming of enclosing the mounting groove of electrode subassembly, the upper portion that spacing fender portion was enclosed turns over to the enstrophe and is formed with a book portion of compressing tightly, electrode subassembly including set up support the sealing washer on the platform, be located the sealing washer and be located the electrode clamp plate of mounting groove, with the insulating pad of insulating isolation between electrode clamp plate and the apron, the circumference round of electrode clamp plate be formed with one turn over a book and compress tightly the spacing step of portion. The utility model discloses the sealed assembly of realization electrode subassembly and apron that can be firm, and effectively improve battery capacity.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a flat high capacity high performance lithium cell apron.
[ background of the invention ]
When the power lithium battery is installed on a power vehicle, the lithium battery can be placed in a box body to form a battery pack, the battery pack is sealed by a cover plate, and electric conduction is achieved through electric elements arranged on the cover plate. The lithium battery cover plate is provided with the positive rivet and the negative rivet to realize the conduction of the internal electrode of the battery and external electrical elements, the sealing of the positive rivet and the negative rivet is one of the main consideration factors of the structural design of the lithium battery cover plate in order to ensure the sealing performance inside the battery, and the light weight and the battery capacity are also research hotspots in the field in order to improve the endurance mileage of new energy automobiles.
Therefore, it is necessary to provide a new flat-type high-capacity high-performance lithium battery cover plate to solve the above problems.
[ Utility model ] content
An object of the utility model is to provide a flat high capacity high performance lithium cell apron, the sealed assembly of realization electrode subassembly and apron that can be firm, and effectively improve battery capacity.
The utility model discloses a following technical scheme realizes above-mentioned purpose: a flat-plate type high-capacity high-performance lithium battery cover plate comprises a lower insulating pad, a cover plate and an electrode assembly, wherein the cover plate is attached to the surface of the lower insulating pad, the electrode assembly is arranged on the upper surface of the cover plate, the cover plate is provided with a supporting sinking platform corresponding to the electrode assembly, a limiting surrounding part extending upwards along the periphery of the supporting sinking platform, and a mounting groove formed by the supporting sinking platform and the limiting surrounding part and used for assembling the electrode assembly, the upper part of the limiting surrounding part is inwards turned to form a turning and pressing part, the electrode assembly comprises a sealing ring arranged on the supporting sinking platform, an electrode pressing plate positioned on the sealing ring and in the mounting groove, and an insulating pad for insulating and isolating the electrode pressing plate and the cover plate, and a limit step matched with the turning and pressing part is formed on one circle of the circumference of the electrode pressing plate.
Furthermore, the lower surface of the cover plate is provided with a plurality of buckle hook portions, and the lower insulating pad is provided with a plurality of buckle protruding portions matched with the buckle hook portions to realize buckle connection.
Furthermore, the flexible connecting piece is arranged on the lower surface of the lower insulating pad and comprises a plate-shaped body part attached to the surface of the lower insulating pad.
Furthermore, the lower surface of the lower insulating pad is provided with a clamping hook pressing strip for pressing two opposite sides of the plate-shaped body part.
Furthermore, a plurality of sealing grooves which are wavy or zigzag in the radial direction are formed in the upper surface of the supporting sinking platform and the lower surface of the electrode pressing plate.
Further, the sealing groove is a concentrically arranged annular groove.
Furthermore, the middle part of the support sinking platform is provided with a transparent first opening, and the lower insulating pad is provided with a second opening corresponding to the first opening.
Furthermore, an upwards-protruding limit convex ring is formed on the periphery of the second opening of the lower insulating pad, and an annular accommodating groove is formed between the surface of the inner ring of the first opening and the limit convex ring; the sealing ring comprises a first sealing part clamped in the annular accommodating groove and a second sealing part positioned between the upper surface of the supporting sinking platform and the lower surface of the electrode pressing plate.
Further, spacing step is whole to be accomodate in the mounting groove, insulating pad cover is established electrode clamp plate peripheral surface just receives electrode clamp plate periphery with spacing extrusion of enclosing fender portion makes the electrode clamp plate with the apron can keep apart completely and can not have the gap.
Further, the electrode clamping ring is used for wrapping the limiting surrounding blocking part and strengthening the clamping force of the limiting surrounding blocking part on the electrode pressing plate.
Compared with the prior art, the utility model discloses a flat high capacity high performance lithium cell apron's beneficial effect lies in: the cover plate is provided with a limiting baffle part formed by drawing, a supporting sinking platform formed by pressing steps and a folding and pressing part formed by closing up, the overall performance of a positive electrode assembly and a negative electrode assembly in the lithium battery cover plate accessory is compressed by the structure, and the positive electrode assembly and the negative electrode assembly are assembled on the front surface of the cover plate, so that the internal space of the lithium battery can be directly and effectively improved, and the energy density is increased; the sealing performance of the cover plate is further improved by matching the sealing grooves on the surfaces of the supporting sinking platform and the electrode pressing plate.
[ description of the drawings ]
Fig. 1 is a schematic diagram of an explosive structure according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of an electrode assembly according to an embodiment of the present invention;
FIG. 3 is a schematic sectional view of an assembled three-dimensional structure according to an embodiment of the present invention;
fig. 4 is a schematic view of a partially enlarged structure at a in fig. 3 according to an embodiment of the present invention;
FIG. 5 is an exploded view of the cover plate, the lower insulating pad and the flexible connecting member according to the embodiment of the present invention;
FIG. 6 is a schematic view of an assembly structure of the cover plate, the lower insulating pad and the flexible connecting member according to an embodiment of the present invention;
FIG. 7 is a schematic structural view of the cover plate and the lower insulating pad in the embodiment of the present invention;
description of reference numerals:
100 flat high-capacity high-performance lithium battery cover plates;
1, a lower insulating pad, 11 a second opening, 12 a limiting convex ring, 13 a buckling protruding part and 14 a buckling hook pressing strip;
2, a cover plate, 21, a supporting sinking platform, 22, a limiting and blocking part, 23, a turnover pressing part, 24, a mounting groove, 25, a first opening, 26, an annular accommodating groove and 27, wherein the bent hook part is buckled;
3 sealing ring, 31 first sealing part, 32 second sealing part, 33 sealing groove; 4 electrode pressing plate, 41 limit step;
5, an insulating pad; 6, electrode holding ring; 7, an explosion-proof membrane; 8, pasting the surface; 9 flexible connectors, 91 plate-like body portion.
[ detailed description ] embodiments
The present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 to 7, in the present embodiment, a flat plate type high capacity and high performance lithium battery cover plate 100, the device comprises a lower insulating pad 1, a cover plate 2 which is attached to the surface of the lower insulating pad 1, a positive electrode component and a negative electrode component which are arranged on the cover plate 2, wherein a supporting sinking platform 21, a limiting surrounding part 22 which extends upwards along the periphery of the supporting sinking platform 21, a mounting groove 24 which is formed by the supporting sinking platform 21 and the limiting surrounding part 22 in a surrounding manner and is used for assembling the positive electrode component or the negative electrode component are arranged on the cover plate 2, the upper part of the limiting surrounding part 22 is turned inwards to form a turning and pressing part 23, the positive electrode assembly and the negative electrode assembly respectively comprise a sealing ring 3 arranged on the supporting sinking platform 21, an electrode pressing plate 4 which is positioned on the sealing ring 3 and is pressed downwards by the turning-over pressing part 23, and an insulating pad 5 for insulating and isolating the electrode pressing plate 4 and the cover plate 2, wherein a limit step 41 matched with the turning-over pressing part 23 is formed on one circle of the circumference of the electrode pressing plate 4.
The lower surface of the cover plate 2 is provided with a plurality of buckle hook parts 27, and the lower insulating pad 1 is provided with a plurality of buckle protruding parts 13 which are matched with the buckle hook parts 27 to realize buckle connection. Through the buckle connection of buckle hook portion 27 and buckle protruding portion 13, the equipment assembly of realization apron 2 and lower insulating pad 1 that can be quick, and cancelled apron and lower insulating pad's ultrasonic welding process in the traditional structure, improved product production efficiency, reduced manufacturing cost, and stopped welding process to the influence of battery cover plate performance.
The lower surface of the lower insulating pad 1 is provided with a flexible connector 9 corresponding to the mounting position of the electrode assembly, the flexible connector 9 comprises a plate-shaped body part 91 attached to the lower surface of the lower insulating pad 1, and the lower surface of the lower insulating pad 1 is provided with a buckle hook pressing strip 14 for pressing two opposite sides of the plate-shaped body part 91. When realizing the assembly of flexible connector 9 and lower insulating mattress 1, only need with the both sides card of flexible connector 9 go into two buckle crotch compress tightly the strip 14 can, the crotch portion of compressing tightly through buckle crotch compress tightly strip 14 compresses tightly the platelike this body part 91 both sides surface of flexible connector 9, realize that flexible connector 9 is connected with the buckle of lower insulating mattress 1, the setting of flexible connector frock in the laser welding process of flexible connector and electrode clamp plate among the traditional structure has been cancelled, the time that the flexible connector passes through the frock is fixed has been saved, the product production efficiency is improved, and the production cost is reduced.
The middle part of the support sinking platform 21 is provided with a through first opening 25, and the lower insulating pad 1 is provided with a second opening 11 corresponding to the first opening 25.
The whole of the limit step 41 is accommodated in the mounting groove 24. The insulating pad 5 is sleeved on the peripheral surface of the electrode pressing plate 4 and is extruded by the periphery of the electrode pressing plate 4 and the limiting surrounding part 22, so that the electrode pressing plate 4 and the cover plate 2 can be completely isolated and no gap exists.
The embodiment also comprises an electrode holding ring 6 which wraps the limit surrounding part 22 and strengthens the holding force of the limit surrounding part 22 to the electrode pressing plate 4.
In one embodiment, the electrode platen 4 is integrally made of a copper material or an aluminum material. In another embodiment, the electrode pressing plate 4 is made of copper-aluminum composite material, specifically, an aluminum bottom plate is used at the bottom of the plate-shaped portion 41, and the other structure of the electrode pressing plate 4 is made of copper material.
The cover plate 2 is also provided with an explosion-proof film 7 and a dustproof surface paste 8 covering the explosion-proof film 7.
In this embodiment, the electrode pressing plate 4 and the limiting baffle portion 22 are in any one of a circular shape, an oval shape, a kidney shape, a square shape, and a polygonal shape.
In order to improve the sealing effect, in the embodiment, the lower insulating gasket 1 is formed with a convex limiting convex ring 12 at the periphery of the second opening 11, the inner ring surface of the first opening 25 and the limiting convex ring 12 form an annular accommodating groove 26, and the sealing ring 3 includes a first sealing portion 31 clamped in the annular accommodating groove 26 and a second sealing portion 32 located between the upper surface of the supporting sinking platform 21 and the lower surface of the electrode pressing plate 4. The upper surface of the supporting sinking platform 21 and the lower surface of the electrode pressing plate 4 are both provided with a plurality of wavy or zigzag sealing grooves 33 in the radial direction, the sealing grooves 33 are annular grooves, the second sealing part 32 can be clamped into the sealing grooves 33 through the extrusion of the electrode pressing plate 4 on the second sealing part 32, and the sealing performance between the supporting sinking platforms 21 in the electrode pressing plate 4 and the cover plate 2 is enhanced.
Lithium battery cover plate 100 only realizes through electrode clamp plate 4 because of the internal-external connection, does not have the accessory assembly to combine to go up and cause the stability problem of internal resistance to, directly guarantee the uniformity of resistance in the lithium battery cover plate through material itself, and can indirectly reduce the lithium battery cover plate charge-discharge temperature value that generates heat. The surface of the limiting step 41 of the electrode pressing plate 4 is tightly pressed by turning the pressing part 23, so that the electrode pressing plate 4 extrudes the sealing ring 3, and the sealing performance is improved; the contact between the cover plate 2 and the electrode pressing plate 4 is thoroughly separated by the insulating pad 5, and the phenomenon of discharge arc generated by gaps when the cover plate 2 is charged and discharged is effectively prevented.
In the embodiment, the cover plate 2 is provided with the limit surrounding part 22 formed by drawing, the support sinking platform 21 formed by pressing the step and the folding and pressing part 23 formed by closing up, the overall performance of the positive electrode component and the negative electrode component in the lithium battery cover plate accessory is compressed by the structure, and the internal space of the lithium battery can be directly and effectively improved and the energy density can be increased because the positive electrode component and the negative electrode component are assembled on the front surface of the cover plate 2; in the embodiment, the electrode pressing plate 4 and the cover plate 2 are made of metal materials, and the metal materials are small in deformation and scaling amount under the extreme environment condition of-40 ℃ to 85 ℃, so that the sealing performance of the lithium battery cover plate is not affected, and the leakage risk exists when the sealing performance of the lithium battery cover plate is provided through a welding process and the strength of a plastic part.
The technical contents and features of the present invention have been disclosed as above, but those skilled in the art can still make various substitutions and modifications based on the teaching and disclosure of the present invention without departing from the spirit of the present invention. Therefore, the protection scope of the present invention should not be limited to the embodiments shown, but includes various alternatives and modifications without departing from the present invention, and is covered by the claims.
Claims (10)
1. A flat plate type high-capacity high-performance lithium battery cover plate is characterized in that: the electrode assembly comprises a lower insulating pad, an cover plate and an electrode assembly, wherein the cover plate and the electrode assembly are arranged on the upper surface of the cover plate in a manner of being attached to the surface of the lower insulating pad, the cover plate is arranged on the upper surface of the cover plate, a supporting sinking platform, a limiting surrounding part and a limiting surrounding part are arranged on the cover plate corresponding to the position of the electrode assembly, the supporting sinking platform extends upwards around the periphery of the sinking platform, the supporting sinking platform and the limiting surrounding part surround the mounting groove for assembling the electrode assembly, the upper part of the limiting surrounding part is turned inwards to form a turning and pressing part, the electrode assembly comprises a sealing ring arranged on the supporting sinking platform, an electrode pressing plate located in the mounting groove and an insulating pad insulated and isolated between the electrode pressing plate and the cover plate, and a limit step matched with the turning and pressing part is formed on the circumference.
2. The flat plate type high capacity high performance lithium battery cover plate of claim 1, wherein: the lower surface of the cover plate is provided with a plurality of buckle hook portions, and the lower insulating pad is provided with a plurality of buckle protruding portions matched with the buckle hook portions to realize buckle connection.
3. The flat plate type high capacity high performance lithium battery cover plate of claim 1, wherein: the flexible connecting piece is arranged on the lower surface of the lower insulating pad and comprises a plate-shaped body part attached to the surface of the lower insulating pad.
4. The flat plate type high capacity high performance lithium battery cover plate according to claim 3, wherein: and the lower surface of the lower insulating pad is provided with a buckle hook pressing strip for pressing two opposite sides of the plate-shaped body part.
5. The flat plate type high capacity high performance lithium battery cover plate of claim 1, wherein: the upper surface of the support sinking platform and the lower surface of the electrode pressing plate are both provided with a plurality of sealing grooves which are wavy or zigzag in the radial direction.
6. The flat plate type high capacity high performance lithium battery cover plate of claim 5, wherein: the sealing groove is a concentric annular groove.
7. The flat plate type high capacity high performance lithium battery cover plate of claim 1, wherein: the middle part of the support sinking platform is provided with a transparent first opening, and the lower insulating pad is provided with a second opening corresponding to the first opening.
8. The flat plate type high capacity high performance lithium battery cover plate of claim 7, wherein: the lower insulating pad is provided with a limit convex ring protruding upwards at the periphery of the second opening, and the surface of the inner ring of the first opening and the limit convex ring form an annular accommodating groove; the sealing ring comprises a first sealing part clamped in the annular accommodating groove and a second sealing part positioned between the upper surface of the supporting sinking platform and the lower surface of the electrode pressing plate.
9. The flat plate type high capacity high performance lithium battery cover plate of claim 1, wherein: spacing step is whole to be accomodate in the mounting groove, the insulating pad cover is established electrode clamp plate peripheral surface just receives electrode clamp plate periphery with spacing extrusion of enclosing fender portion makes the electrode clamp plate with the apron can keep apart completely and can not have the gap.
10. The flat plate type high capacity high performance lithium battery cover plate of claim 1, wherein: the electrode clamping ring is used for reinforcing the wrapping of the limiting surrounding blocking part and clamping the electrode pressing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020053643.3U CN211295161U (en) | 2020-01-11 | 2020-01-11 | Flat plate type high-capacity high-performance lithium battery cover plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020053643.3U CN211295161U (en) | 2020-01-11 | 2020-01-11 | Flat plate type high-capacity high-performance lithium battery cover plate |
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| Publication Number | Publication Date |
|---|---|
| CN211295161U true CN211295161U (en) | 2020-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020053643.3U Active CN211295161U (en) | 2020-01-11 | 2020-01-11 | Flat plate type high-capacity high-performance lithium battery cover plate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111146372A (en) * | 2020-01-11 | 2020-05-12 | 苏州炬鸿通讯电脑科技有限公司 | Flat plate type high-capacity high-performance lithium battery cover plate |
| WO2022170488A1 (en) * | 2021-02-09 | 2022-08-18 | 宁德时代新能源科技股份有限公司 | End cover assembly, cell, battery, electric apparatus, and manufacturing method |
-
2020
- 2020-01-11 CN CN202020053643.3U patent/CN211295161U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111146372A (en) * | 2020-01-11 | 2020-05-12 | 苏州炬鸿通讯电脑科技有限公司 | Flat plate type high-capacity high-performance lithium battery cover plate |
| WO2022170488A1 (en) * | 2021-02-09 | 2022-08-18 | 宁德时代新能源科技股份有限公司 | End cover assembly, cell, battery, electric apparatus, and manufacturing method |
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