CN213520137U - Power battery top cover structure and power battery - Google Patents
Power battery top cover structure and power battery Download PDFInfo
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- CN213520137U CN213520137U CN202022679592.8U CN202022679592U CN213520137U CN 213520137 U CN213520137 U CN 213520137U CN 202022679592 U CN202022679592 U CN 202022679592U CN 213520137 U CN213520137 U CN 213520137U
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- power battery
- protective layer
- top cover
- cover structure
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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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- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model discloses a power battery top cap structure and power battery, this power battery top cap structure include lid and protective layer. The lid is made of aluminum. The protective layer is arranged on the bottom wall of the cover body and is made of stainless steel. The connecting part and the protective layer are integrally formed. The top cover structure of the power battery can avoid short circuit of metal wires, improve the strength of the power battery, reduce the possibility that the top cover structure of the power battery is damaged by electrochemical corrosion, prolong the service life of the power battery and improve the use safety of the power battery.
Description
Technical Field
The utility model relates to a power battery technical field especially relates to a power battery top cap structure and power battery.
Background
The power battery top cap among the prior art all is the smooth aluminum sheet usually, scrapes out the wire very easily during top cap and shell equipment, falls into the inside wire of power battery and makes the inside short circuit of battery easily to lead to the battery explosion, have higher safety risk. In addition, if the inside of the battery fails in the using process, electrochemical reaction is easily generated between the internal components and the top cover of the power battery, so that the battery can be out of work, the top cover can be corroded and broken, and the strength of the top cover is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a power battery top cap structure can improve top cap structure's security, improves top cap structure's intensity.
Another object of the present invention is to provide a power battery, which can improve the strength of the power battery and reduce the possibility of the top cover of the power battery being damaged by electrochemical corrosion.
For realizing the technical effect, the utility model discloses a power battery top cap structure and power battery's technical scheme as follows:
a power battery top cap structure, characterized by includes: a lid body made of aluminum; the protective layer is arranged on the bottom wall of the cover body and is made of stainless steel; the protective layer and the cover body are integrally formed.
Furthermore, a plurality of grooves are formed in the bottom wall of the protective layer, through holes penetrating through the protective layer and the cover body are formed in the bottom wall of each groove, and the through holes are used for installing the pole posts and the explosion-proof pieces.
Further, the side wall of the groove extends along the radial outer side of the through hole in the direction away from the cover body.
Further, the power battery top cover structure further comprises a plurality of mounting protrusions, the mounting protrusions are arranged on the top wall of the cover body, and each mounting protrusion surrounds one through hole.
Further, at least two the installation arch all includes a plurality of bellying, and is a plurality of the bellying encircles the central axis evenly distributed of through-hole.
Further, the power battery top cover structure further comprises a counter bore, and the counter bore is formed in the top wall of the cover body and penetrates through the cover body and the protective layer.
Further, the top cover structure of the power battery further comprises an extension protrusion, the extension protrusion is arranged on the bottom wall of the protective layer, and the extension protrusion surrounds the counter sink.
Further, power battery top cap structure still includes connecting portion, connecting portion integrated into one piece in on the diapire of protective layer, connecting portion are prepared by the stainless steel, connecting portion are used for being connected with power battery's casing.
Further, the connecting portion includes a boss, and a cross-sectional area of the boss gradually decreases in a direction away from the protective layer.
A power battery comprises the power battery top cover structure.
The utility model has the advantages that: the connecting part can facilitate the installation of the top cover structure on the shell of the power battery, and the installation efficiency of the top cover structure is improved. Connecting portion and protective layer are prepared by the stainless steel and are formed, make connecting portion and protective layer can play better isolation effect to between power battery's internal component and the lid to prevent that the electrochemical corrosion phenomenon appears between power battery internal component and the lid and lead to the battery inefficacy, thereby improved the safety in utilization of battery, furtherly, because the stainless steel contains chromium, can improve protective layer and connecting portion to the isolation effect between lid and the internal component, effectively improve the safety in utilization of battery. In addition, because the top cap structure carries out processing to the bottom of top cap structure usually in the installation, because connecting portion and protective layer are prepared by the stainless steel and are formed, make difficult the wire that appears in the top cap structure processing procedure, can effectively avoid the wire that the top cap structure produced in the installation to avoid owing to fall into short circuit and the battery explosion risk that the inside wire of power battery leads to, improved power battery's safety in utilization. In addition, the integrated part can make lid and protective layer firm and connect, avoids appearing the clearance between lid and the protective layer, also can avoid the internal component of power battery to get into the clearance in lid and the protective layer and cause the possibility of damage to the lid to ensured the protective layer's protecting effect, the lid corrosion problem when having prevented the power battery trouble has both improved top cap structure's intensity, has also improved the security of power battery.
The utility model discloses an another beneficial effect does: due to the adoption of the top cover structure of the power battery, the short circuit of the metal wire can be avoided, the strength of the power battery is improved, the possibility that the top cover structure of the power battery is damaged by electrochemical corrosion is reduced, the service life of the power battery is prolonged, and the use safety of the power battery is improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic structural diagram of a top cover structure of a power battery provided in embodiment 1 of the present invention;
fig. 2 is a schematic view of an internal structure of a top cover structure of a power battery provided in embodiment 1 of the present invention;
FIG. 3 is an enlarged partial schematic view of FIG. 2 at A;
fig. 4 is a schematic view of an internal structure of another power battery top cover structure provided in embodiment 1 of the present invention;
FIG. 5 is a partial enlarged structural view at B in FIG. 4;
fig. 6 is a schematic structural diagram of a top cover structure of a power battery provided in embodiment 2 of the present invention;
fig. 7 is a schematic view of an internal structure of a top cover structure of a power battery provided in embodiment 2 of the present invention;
FIG. 8 is an enlarged partial schematic view of FIG. 7 at A;
fig. 9 is an internal structural schematic view of another power battery top cover structure provided in embodiment 2 of the present invention;
fig. 10 is a partially enlarged structural view at B in fig. 9.
Reference numerals
1. A cover body; 2. a protective layer; 3. a boss; 4. a groove; 5. a through hole; 6. mounting a boss; 7. a countersunk hole; 8. an extension protrusion.
Detailed Description
In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
It will be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing and simplifying the invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
The specific structure of the power battery top cover structure according to embodiment 1 of the present invention will be described below with reference to fig. 1 to 5.
As shown in fig. 1-5, fig. 1 discloses a top cover structure of a power battery, which comprises a cover body 1, a protective layer 2 and a connecting part. The lid body 1 is made of aluminum. The protective layer 2 is arranged on the bottom wall of the cover body 1, and the protective layer 2 is made of stainless steel. The connecting part is arranged on the bottom wall of the protective layer 2 and is made of stainless steel, the connecting part is used for being connected with a shell of the power battery, and the connecting part, the protective layer 2 and the cover body 1 are integrally formed.
It can be understood that the connecting part can facilitate the mounting of the top cover structure on the shell of the power battery, and improve the mounting efficiency of the top cover structure. Connecting portion and protective layer 2 are prepared by the stainless steel and are formed, make connecting portion and protective layer 2 can play better isolation effect between power battery's internal component and the lid 1 to prevent that the electrochemical corrosion phenomenon appears between power battery internal component and the lid 1 and lead to the battery inefficacy, thereby improved the safety in utilization of battery, furtherly, because the stainless steel contains chromium, can improve protective layer 2 and connecting portion to the isolation effect between lid 1 and the internal component, effectively improve the safety in utilization of battery. In addition, because the top cap structure carries out the processing to the bottom of top cap structure usually in the installation, because connecting portion and protective layer 2 are prepared by the stainless steel and are formed, make difficult the wire that appears in the top cap structure processing procedure, can effectively avoid the wire that the top cap structure produced in the installation to avoid owing to fall into short circuit and the battery explosion risk that the inside wire of power battery leads to, improved power battery's safety in utilization.
In addition, the integrated part can make lid 1 and protective layer 2 connect firmly, avoids appearing the clearance between lid 1 and the protective layer 2, also can avoid the power battery internal component to get into the clearance in lid 1 and the protective layer 2 and cause the possibility of damage to lid 1 to guaranteed the protective layer 2's protecting effect, the lid 1 corrosion problem when having prevented the power battery trouble, both improved top cap structure's intensity, also improved the security of power battery.
Illustratively, the protective layer 2 can be formed on the inner wall of the housing 1 by a die forming process, i.e. the housing 1 and the protective layer 2 can be formed as an integral part.
In some embodiments, as shown in fig. 2 and 3, the connection portion comprises a boss 3, the cross-sectional area of the boss 3 gradually decreasing in a direction away from the protective layer 2.
It can be understood that, because the cross sectional area of the boss 3 is gradually reduced along the direction far away from the protective layer 2, and the cross sectional area of the cover body 1 is matched with the cross sectional area of the power battery shell, the arrangement of the boss 3 not only can reduce the stress concentration phenomenon, but also can be convenient for accurately and quickly installing the top cover structure on the shell, thereby improving the installation efficiency of the top cover structure.
In some embodiments, as shown in fig. 1-3, the bottom wall of the boss 3 is provided with a plurality of grooves 4, the bottom wall of the groove 4 is provided with a through hole 5 penetrating through the boss 3, the protective layer 2 and the cover body 1, and the through hole 5 is used for installing the pole and the explosion-proof piece.
It can be understood that, the setting of recess 4 can be convenient for play the location effect to the installation of utmost point post and explosion-proof piece, also can reduce the volume that utmost point post and explosion-proof piece are located the diapire below of boss 3 simultaneously, not only can provide installation space for the installation of sealing washer isotructure, can also reduce utmost point post and explosion-proof piece at the inside space occupancy of power battery to improve the inside space utilization of power battery.
In some embodiments, as shown in fig. 3, the side wall of the groove 4 is provided extending along the radially outer side of the through-hole 5 in a direction away from the lid body 1.
It can be understood that the groove 4 can be conveniently machined through the structural arrangement, so that the machining difficulty of the top cover structure is reduced, and the machining cost of the top cover structure is reduced.
In some embodiments, as shown in fig. 1 and 3, the top cover structure of the power battery further includes a mounting protrusion 6, the mounting protrusion 6 is disposed on the top wall of the cover body 1, the mounting protrusion 6 is plural, and each mounting protrusion 6 is disposed around one through hole 5.
It can be understood that the arrangement of the mounting protrusion 6 can facilitate the fixing of the terminal or the explosion-proof member on the cover body 1, so as to improve the stability of the installation of the explosion-proof member or the terminal on the cover body 1.
In some embodiments, as shown in fig. 3, each of the at least two mounting protrusions 6 comprises a plurality of protrusions that are evenly distributed around the central axis of the through-hole 5.
It can be understood that the arrangement of a plurality of bosses can be matched with the pole, so that the pole can be accurately installed in the through hole 5, and the bosses can also play a limiting role to prevent the pole from rotating on the cover body 1, thereby improving the installation convenience of the top cover structure and improving the safety of the top cover structure during use.
In some embodiments, as shown in fig. 4 and 5, the top cover structure of the power battery further includes a counter bore 7, and the counter bore 7 is provided on the top wall of the cover body 1 and penetrates the cover body 1, the protective layer 2 and the connecting portion.
It can be understood that counter sink 7 can regard as to annotate the liquid hole to use, because annotate the liquid hole and set up to counter sink 7, can prevent that electrolyte from flowing to the surface of lid 1 when pouring into power battery inside to guaranteed the cleanliness factor on lid 1 surface, in addition, counter sink 7's setting also can be convenient for annotate the sealed of liquid hole.
In some embodiments, as shown in fig. 5, the top cover structure of the power battery further includes an extension protrusion 8, the extension protrusion 8 is disposed on the bottom wall of the boss 3, and the extension protrusion 8 is disposed around the counter-sunk hole 7.
It can be understood that the arrangement of the extension protrusion 8 can obviously reduce the possibility that the electrolyte is contaminated on the bottom wall of the boss 3 when injected into the power battery, thereby improving the safety of the injected electrolyte, preventing the electrolyte from polluting the boss 3 and prolonging the service life of the boss 3.
In some embodiments, the cover 1 and the protective layer 2 are rectangular in cross-section.
Example 1:
the power battery top cover structure according to an embodiment of the present invention is described below with reference to fig. 1 to 5.
The top cover structure of the power battery of the embodiment comprises a cover body 1, a protective layer 2, a connecting part, a mounting protrusion 6, a counter-sunk hole 7 and an extension protrusion 8.
The lid body 1 is made of aluminum. The protective layer 2 is arranged on the bottom wall of the cover body 1, and the protective layer 2 is made of stainless steel. The cover 1 and the protective layer 2 are rectangular in cross section.
The connecting part is arranged on the bottom wall of the protective layer 2 and is made of stainless steel, the connecting part is used for being connected with a shell of the power battery, and the connecting part, the protective layer 2 and the cover body 1 are integrally formed. The connection portion includes a boss 3, and the cross-sectional area of the boss 3 gradually decreases in a direction away from the protective layer 2. Be equipped with a plurality of recesses 4 on the diapire of boss 3, be equipped with the through-hole 5 that runs through boss 3, protective layer 2 and lid 1 on the diapire of recess 4, through-hole 5 is used for installing utmost point post and explosion-proof component. The side wall of the groove 4 extends along the radially outer side of the through hole 5 in a direction away from the lid body 1.
The mounting protrusion 6 is provided on the top wall of the lid body 1, the mounting protrusion 6 is plural, and each mounting protrusion 6 is provided around one through hole 5. At least two mounting bosses 6 each include a plurality of bosses that are evenly distributed around the central axis of the through-hole 5.
The counter sink 7 is provided on the top wall of the lid body 1 and penetrates the lid body 1, the protective layer 2, and the connecting portion. An extension protrusion 8 is provided on the bottom wall of the boss 3, the extension protrusion 8 being provided around the counter sink 7.
The specific structure of the power battery top cover structure according to embodiment 1 of the present invention will be described below with reference to fig. 6 to 10.
As shown in fig. 6-10, fig. 6 discloses a top cover structure of a power battery, which comprises a cover body 1 and a protective layer 2. The lid body 1 is made of aluminum. The protective layer 2 is arranged on the bottom wall of the cover body 1, and the protective layer 2 is made of stainless steel. The protective layer 2 and the cover 1 are integrally formed.
It can be understood that, the protective layer 2 is made of stainless steel, so that the protective layer 2 can have a good isolation effect between the internal element of the power battery and the cover body 1, and prevent the battery from losing efficacy due to electrochemical corrosion between the internal element of the power battery and the cover body 1, thereby improving the use safety of the battery, and further, because the stainless steel contains chromium, the isolation effect of the protective layer 2 between the cover body 1 and the internal element can be improved, and the use safety of the battery can be effectively improved. In addition, because the top cap structure carries out processing to the bottom of top cap structure usually in the installation, because protective layer 2 is prepared by the stainless steel and forms, make difficult the appearance wire in the top cap structure processing procedure, can effectively avoid the wire that the top cap structure produced in the installation to avoid owing to fall into short circuit and the battery explosion risk that the inside wire of power battery leads to, improved power battery's safety in utilization.
In addition, the integrated part can make lid 1 and protective layer 2 connect firmly, avoids appearing the clearance between lid 1 and the protective layer 2, also can avoid the power battery internal component to get into the clearance in lid 1 and the protective layer 2 and cause the possibility of damage to lid 1 to guaranteed the protective layer 2's protecting effect, the lid 1 corrosion problem when having prevented the power battery trouble, both improved top cap structure's intensity, also improved the security of power battery.
Illustratively, the protective layer 2 can be formed on the inner wall of the housing 1 by a die forming process, i.e. the housing 1 and the protective layer 2 can be formed as an integral part.
In some embodiments, as shown in fig. 6-8, the bottom wall of the protective layer 2 is provided with a plurality of grooves 4, the bottom wall of the grooves 4 is provided with through holes 5 penetrating through the protective layer 2 and the cover body 1, and the through holes 5 are used for installing the poles and the explosion-proof piece.
It can be understood that, the setting of recess 4 can be convenient for play the location effect to the installation of utmost point post and explosion-proof piece, also can reduce the volume that utmost point post and explosion-proof piece are located the diapire below of protective layer 2 simultaneously, not only can provide installation space for the installation of sealing washer isotructure, can also reduce utmost point post and explosion-proof piece at the inside space occupancy of power battery to improve the inside space utilization of power battery.
In some embodiments, as shown in fig. 8, the side wall of the groove 4 is provided extending along the radially outer side of the through-hole 5 in a direction away from the lid body 1.
It can be understood that the groove 4 can be conveniently machined through the structural arrangement, so that the machining difficulty of the top cover structure is reduced, and the machining cost of the top cover structure is reduced.
In some embodiments, as shown in fig. 6 and 8, the top cover structure of the power battery further includes a plurality of mounting protrusions 6, the mounting protrusions 6 are disposed on the top wall of the cover body 1, and each mounting protrusion 6 is disposed around one through hole 5.
It can be understood that the arrangement of the mounting protrusion 6 can facilitate the fixing of the terminal or the explosion-proof member on the cover body 1, so as to improve the stability of the installation of the explosion-proof member or the terminal on the cover body 1.
In some embodiments, as shown in fig. 8, each of the at least two mounting projections 6 comprises a plurality of projections, which are evenly distributed around the central axis of the through-hole 5.
It can be understood that the arrangement of a plurality of bosses can be matched with the pole, so that the pole can be accurately installed in the through hole 5, and the bosses can also play a limiting role to prevent the pole from rotating on the cover body 1, thereby improving the installation convenience of the top cover structure and improving the safety of the top cover structure during use.
In some embodiments, as shown in fig. 9 and 10, the top cover structure of the power battery further includes a counter-sunk hole 7, and the counter-sunk hole 7 is provided on the top wall of the cover body 1 and penetrates through the cover body 1 and the protective layer 2.
It can be understood that counter sink 7 can regard as to annotate the liquid hole to use, because annotate the liquid hole and set up to counter sink 7, can prevent that electrolyte from flowing to the surface of lid 1 when pouring into power battery inside to guaranteed the cleanliness factor on lid 1 surface, in addition, counter sink 7's setting also can be convenient for annotate the sealed of liquid hole.
In some embodiments, as shown in fig. 10, the top cover structure of the power battery further includes an extension protrusion 8, the extension protrusion 8 is disposed on the bottom wall of the protection layer 2, and the extension protrusion 8 is disposed around the counter-sunk hole 7.
It can be understood that the arrangement of the extension protrusion 8 can significantly reduce the possibility that the electrolyte is contaminated on the bottom wall of the protective layer 2 when injected into the power battery, thereby improving the safety of the injected electrolyte, preventing the electrolyte from polluting the boss 3 and prolonging the service life of the boss 3.
Example 2:
the top cover structure of the power battery of the embodiment comprises a cover body 1, a protective layer 2, a mounting protrusion 6, a counter-sunk hole 7 and an extension protrusion.
The lid body 1 is made of aluminum. The protective layer 2 is arranged on the bottom wall of the cover body 1, and the protective layer 2 is made of stainless steel. Be equipped with a plurality of recesses 4 on the diapire of protective layer 2, be equipped with the through-hole 5 that runs through protective layer 2 and lid 1 on the diapire of recess 4, through-hole 5 is used for installing utmost point post and explosion-proof component. The side wall of the groove 4 extends along the radially outer side of the through hole 5 in a direction away from the lid body 1. The mounting protrusion 6 is provided on the top wall of the lid body 1, the mounting protrusion 6 is plural, and each mounting protrusion 6 is provided around one through hole 5. At least two mounting bosses 6 each include a plurality of bosses that are evenly distributed around the central axis of the through-hole 5. The counter sink 7 is provided on the top wall of the lid body 1 and penetrates the lid body 1 and the protective layer 2. And the extension protrusion 8 is arranged on the bottom wall of the protective layer 2, and the extension protrusion 8 is arranged around the counter sink 7. The protective layer 2 and the cover 1 are integrally formed.
A power battery comprises the power battery top cover structure.
According to the utility model discloses power battery, owing to have the aforesaid power battery top cap structure, can avoid the wire to take place the short circuit and improve power battery's intensity, reduce power battery's top cap structure and by the possibility that electrochemical corrosion damaged, prolonged power battery's life and improved power battery's safety in utilization.
In the description herein, references to the description of "some embodiments," "other embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.
Claims (10)
1. A power battery top cap structure, characterized by includes:
the cover body (1), the cover body (1) is made of aluminum;
the protective layer (2) is arranged on the bottom wall of the cover body (1), and the protective layer (2) is made of stainless steel;
the protective layer (2) and the cover body (1) are integrally formed.
2. The top cover structure of the power battery according to claim 1, wherein a plurality of grooves (4) are formed in the bottom wall of the protective layer (2), through holes (5) penetrating through the protective layer (2) and the cover body (1) are formed in the bottom wall of the grooves (4), and the through holes (5) are used for installing poles and explosion-proof pieces.
3. The top cover structure of the power battery according to claim 2, wherein the side wall of the groove (4) extends along the radial outside of the through hole (5) in a direction away from the cover body (1).
4. The top cover structure of the power battery is characterized by further comprising a plurality of mounting protrusions (6), wherein the mounting protrusions (6) are arranged on the top wall of the cover body (1), and each mounting protrusion (6) is arranged around one through hole (5).
5. The top cover structure of the power battery according to claim 4, wherein at least two of the mounting protrusions (6) each comprise a plurality of protrusions, which are evenly distributed around the central axis of the through hole (5).
6. The top cover structure of the power battery according to claim 2, characterized in that the top cover structure of the power battery further comprises a counter bore (7), wherein the counter bore (7) is arranged on the top wall of the cover body (1) and penetrates through the cover body (1) and the protective layer (2).
7. The top cover structure of the power battery as claimed in claim 6, further comprising an extension protrusion (8), wherein the extension protrusion (8) is arranged on the bottom wall of the protection layer (2), and the extension protrusion (8) is arranged around the counter-sunk hole (7).
8. The top cover structure of the power battery according to claim 1, further comprising a connecting part integrally formed on the bottom wall of the protective layer (2), wherein the connecting part is made of stainless steel and is used for being connected with a shell of the power battery.
9. The top cover structure of the power battery according to claim 8, wherein the connecting part comprises a boss (3), and the cross-sectional area of the boss (3) is gradually reduced along the direction away from the protective layer (2).
10. A power battery comprising the power battery top cover structure of any one of claims 1-9.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022056607 | 2020-09-18 | ||
| CN2020220566075 | 2020-09-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213520137U true CN213520137U (en) | 2021-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022679592.8U Active CN213520137U (en) | 2020-09-18 | 2020-11-18 | Power battery top cover structure and power battery |
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| Country | Link |
|---|---|
| CN (1) | CN213520137U (en) |
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2020
- 2020-11-18 CN CN202022679592.8U patent/CN213520137U/en active Active
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