CN216250918U - Battery core cover plate, battery core, module and battery pack - Google Patents
Battery core cover plate, battery core, module and battery pack Download PDFInfo
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- CN216250918U CN216250918U CN202122450234.4U CN202122450234U CN216250918U CN 216250918 U CN216250918 U CN 216250918U CN 202122450234 U CN202122450234 U CN 202122450234U CN 216250918 U CN216250918 U CN 216250918U
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- 238000007789 sealing Methods 0.000 claims abstract description 20
- 239000004033 plastic Substances 0.000 claims description 31
- 238000001746 injection moulding Methods 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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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 belongs to the technical field of batteries and discloses a battery core cover plate. This electric core apron includes the top cap piece, utmost point post and bottom cap piece, wherein be equipped with the mounting hole on the top cap piece, be equipped with first local flange boss on the inner wall of mounting hole, the mounting hole setting is worn to establish by utmost point post, utmost point post includes flange boss and the local flange boss of second, sealing connection between flange boss and the top cap piece, first local flange boss sets up between flange boss and the local flange boss of second and is connected in the axial direction of utmost point post with flange boss and the local flange boss of second respectively, the bottom cap piece links to each other with the top cap piece, in order to support fixed utmost point post, can effectively promote the ability that electric core apron bore external load and moment of torsion, improve the reliability of its structure, effectively prevent the emergence of electric core weeping phenomenon.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a battery cell cover plate, a battery cell, a module and a battery pack.
Background
The electric core is the minimum unit of the power battery and is also an electric energy storage unit, and the electric core has higher energy density so as to store electric energy as much as possible and enable the electric automobile to have longer endurance mileage. In addition, the service life of the battery cell is also the most critical factor, and the damage of any one battery cell can cause the damage of the whole battery pack. When a plurality of electric cores are packaged together by the same shell frame, and contact is carried out with the outside through unified boundary, a module is formed. When several modules are controlled or managed by the battery management system and the thermal management system together, the unified whole is called a (battery) pack.
The electric core is as common power battery's memory cell, mainly comprises apron, aluminum hull and utmost point post, and wherein the structure of apron is the most complicated, mainly includes aluminium sheet and utmost point post, and utmost point post plays the effect that inside and outside circuit switched on, and its structure is very important to the atress of electric core, and its height is influential to the energy density of electric core. At present, adopt the processing of injection molding process mostly between electric core utmost point post and the lamina tecti, and remove the external force of bearing outside to electric core utmost point post through the insulating plastic between electric core utmost point post and the lamina tecti, because utmost point post can adopt special shapes such as circular, and electric core utmost point post and lamina tecti among the prior art are the flange design of full circle, lead to electric core utmost point post can't bear great moment of torsion, when electric core utmost point post receives great moment of torsion, can take place rotatory phenomenon, if the moment of torsion is great, then can lead to the lamina tecti to appear irreversible deformation, lose the sealed effect to electric core utmost point post, and then lead to electric core weeping, influence the security performance and the performance of electric core, can take place breaking away from and cut off the power supply of electric core utmost point post and module busbar when serious.
SUMMERY OF THE UTILITY MODEL
According to one aspect of the utility model, the utility model provides a cell cover plate, which can effectively improve the capacity of bearing external load and torque of the cell cover plate, improve the reliability of the structure of the cell cover plate, and effectively prevent the occurrence of cell leakage.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a cell cover plate, comprising:
the top cover plate is provided with a mounting hole, and the inner wall of the mounting hole is provided with a first local flange boss;
the pole column penetrates through the mounting hole and comprises a flange boss and a second local flange boss, the flange boss is connected to the bottom of the top cover plate in a sealing mode, and the first local flange boss is arranged between the flange boss and the second local flange boss along the axial direction of the pole column and is connected with the flange boss and the second local flange boss respectively;
and the bottom cover plate is connected with the top cover plate and is used for supporting and fixing the pole.
Optionally, the terminal further includes an upper insulating plastic ring, and the upper insulating plastic ring is disposed between the outer peripheral side of the pole and the inner wall of the mounting hole.
Optionally, the upper insulating plastic ring is formed between the outer peripheral side of the pole and the inner wall of the mounting hole by injection molding.
Optionally, a groove is formed in the bottom cover plate, and the flange boss is connected with the groove in a sealing manner.
Optionally, the flange further comprises a sealing ring, wherein the sealing ring is arranged between the flange boss and the groove.
Alternatively, the first local flange projections may be provided in plural numbers in a circumferential direction of an inner wall of the mounting hole, the first local flange projections may be provided in plural numbers at intervals, the second local flange projections may be provided in plural numbers in a circumferential direction of an outer circumferential side of the pole, the second local flange projections may be provided in plural numbers at intervals, and each of the first local flange projections may be provided between one of the second local flange projections and the flange projection in an axial direction of the pole.
Optionally, an explosion-proof valve is further arranged on the top cover sheet, and an explosion-proof valve protection sheet is arranged outside the explosion-proof valve.
According to another aspect of the utility model, the utility model provides a battery cell, which adopts the above cell cover plate.
According to another aspect of the present invention, the present invention provides a battery module, which employs the above battery cell.
According to another aspect of the present invention, a battery pack is provided, which employs the above battery module.
The utility model has the beneficial effects that:
the first local flange boss is arranged between the second local flange boss and the flange boss, and the first local flange boss is respectively connected with the second local flange boss and the flange boss along the axial direction of the pole, so that the tensile force and the pressure load of the external to the pole can be effectively borne, and the capacity of the pole for resisting the external load is improved;
through set up insulating plastic ring between the inner wall at the mounting hole and the surface of utmost point post, go up insulating plastic ring and be full of the part that first local flange boss and the local flange boss of second do not coincide, through the intensity of last insulating plastic ring itself, can effectively avoid utmost point post rotation in the horizontal plane, go up all the other parts of insulating plastic ring and can also play fine sealed effect, avoid electric core weeping.
Drawings
Fig. 1 is a schematic structural diagram of a cell cover plate provided by the present invention;
fig. 2 is a top view of an assembly view of a cell cover plate provided by the present invention;
FIG. 3 is a cross-sectional view taken in the direction B-B of FIG. 2;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 5 is a schematic view of the construction of the top cover sheet provided by the present invention;
FIG. 6 is a schematic structural view of a pole provided by the present invention;
figure 7 is a schematic view of the structure of the base flap provided by the present invention.
In the figure:
100. a top cover sheet; 110. mounting holes; 120. a first partial flange boss; 200. a pole column; 210. a flange boss; 220. a second local flange boss; 300. a bottom cover sheet; 310. a groove; 320. an assembly hole; 400. an insulating plastic ring is arranged; 500. a seal ring; 600. an explosion-proof valve; 610. an explosion-proof valve protection sheet; 700. a liquid injection hole; 800. and tracing the two-dimension code.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
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, removably 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. 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.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
In the prior art, the top cover plate of the battery core is mostly made of plastic, the top cover plate made of insulating plastic is used for bearing force applied to the battery core pole column from the outside, and the plastic has low strength, cannot bear large external load and has poor reliability, so that the leakage of the battery core is easily caused under the action of large external force; present electric core utmost point post still adopts whole round flange structure, and the ability of bearing the outside moment of torsion is relatively poor, receives outside great moment of torsion back when electric core utmost point post, and electric core utmost point post is rotatory relatively easily, leads to electric core weeping.
In view of the above problems, in an embodiment of the present invention, a battery cover plate is provided, as shown in fig. 1, the battery cover plate includes a top cover plate 100, a terminal post 200 and a bottom cover plate 300, where a mounting hole 110 is formed in the top cover plate 100, a first local flange boss 120 is formed on an inner wall of the mounting hole 110, the terminal post 200 is disposed through the mounting hole 110, the terminal post 200 includes a second local flange boss 220 and a flange boss 210, after the terminal post 200 is mounted on the top cover plate 100, the first local flange boss 120 is disposed between the second local flange boss 220 and the flange boss 210, the first local flange boss 120 and the second local flange boss 220 are connected in an axial direction of the terminal post 200, so as to resist a pressure applied to the terminal post 200 from an upper portion of the top cover plate 100, and the bottom of the flange boss 210 and the top cover plate 100 are hermetically connected in the axial direction of the terminal post 200, so as to resist a tensile force applied to the terminal post 200 from the upper portion of the top cover plate 100, the bottom cover plate 300 is connected with the top cover plate 100 and used for supporting the fixed pole 200, and the capacity of resisting external pulling and pressing loads of the battery cell cover plate can be improved through the matching connection of the top cover plate 100, the pole 200 and the bottom cover plate 300.
The first local flange boss 120 is arranged between the second local flange boss 220 and the flange boss 210, and the first local flange boss 120 is respectively connected with the second local flange boss 220 and the flange boss 210 along the axial direction of the pole 200, when the pole 200 is pressed from the upper part of the top cover plate, the pressure can be resisted through the connection of the second local flange boss 220 and the first local flange boss 120, the flange boss 210 is arranged to be connected with the top cover plate 100 in a sealing manner, when the pole 200 is pulled from the upper part of the top cover plate, the tensile force can be resisted through the connection of the flange boss 210 and the top cover plate 100, so that the capacity of the battery cell cover plate for resisting external tensile force and pressure load is improved, the reliability of the structure of the battery cell cover plate is improved, and the leakage of a battery cell is avoided.
Further, with continued reference to fig. 1, an explosion-proof valve 600 may be disposed on the cover plate of the battery cell, and since the lithium battery may generate high-temperature and high-pressure gas during the use process, if the gas cannot be discharged outside the lithium battery, explosion and fire may occur to cause serious safety accidents. Consequently, set up explosion-proof valve 600 on electric core apron, can open explosion-proof valve 600 pressure release when electric core internal pressure is too big, avoid appearing the battery explosion phenomenon.
Preferably, can set up the explosion-proof valve 600 of one deck protection sheet of explosion-proof valve 600 outside explosion-proof valve 600, because explosion-proof valve 600 is mostly a very thin aluminum sheet, all can cause the damage when receiving outside impact or striking to lead to the electric core weeping, consequently need set up the explosion-proof valve 600 protection sheet outside explosion-proof valve 600, avoid external force to strike or touch explosion-proof valve 600. In one embodiment, the protection sheet of the explosion-proof valve 600 may be a plastic film, and in order to enhance the warning effect, the color of the protection sheet of the explosion-proof valve 600 may be distinguished from the color of the cell cover plate, and a transparent blue plastic film may be used; of course, in other embodiments, other materials with the same function can be used, and the protection sheet of the explosion-proof valve 600 satisfying the above requirements is within the protection scope of the present application.
Further, with continued reference to fig. 1, an upper insulating plastic ring 400 may be disposed between the outer surface of the terminal 200 and the inner wall of the mounting hole 110, the position where the first local flange boss 120 is not disposed in the circumferential direction of the mounting hole 110 is full of the upper insulating plastic ring 400, because the upper insulating plastic ring 400 has a certain strength, when the terminal 200 receives a torque, the upper insulating plastic ring 400 blocks the rotation of the second local flange boss 220 with its own strength, thereby avoiding the rotation of the terminal 200, improving the torque resistance of the terminal 200, avoiding the leakage of the battery core, and further improving the reliability of the battery core cover plate.
Preferably, in one embodiment, the upper insulating plastic ring 400 may be formed between the outer surface of the pole 200 and the inner wall of the mounting hole 110 by injection molding. As shown in fig. 2, after the pole 200 is assembled with the mounting hole 110, the melted insulating plastic is injected into a gap between the inner wall of the mounting hole 110 and the outer surface of the pole 200, and the upper insulating plastic ring 400 is formed after cooling. At this time, as shown in fig. 3, the position which is not provided with the first local flange boss 120 in the circumferential direction of the inner wall of the mounting hole 110 may be filled with the insulating plastic ring 400 for resisting the torque received by the terminal 200, as shown in fig. 4, the upper insulating plastic ring 400 which is located between the first local flange boss 120 and the second local flange boss 220 and between the top cover plate 100 and the local flange boss 210 may play a good role in sealing the terminal 200, thereby preventing the leakage of the battery cell, and at the same time, the upper insulating plastic ring 400 has a certain viscosity in a molten state, thereby reinforcing the connection between the terminal 200 and the top cover plate 100, further improving the capability of the battery cell cover plate for resisting the external load, and improving the working reliability of the battery cell cover plate.
Optionally, as shown in fig. 5, a plurality of first local flange bosses 120 may be arranged in the circumferential direction of the inner wall of the mounting hole 110, and the arrangement of the plurality of first local flange bosses 120 may increase the contact area between the first local flange bosses 120 and the second local flange bosses 220 and between the first local flange bosses 120 and the second local flange bosses 210, improve the resistance of the terminal 200 against tensile force and pressure, and improve the operational reliability of the above-mentioned cell cover plate.
Further, in an embodiment, two first local flange bosses 120 may be disposed at an interval of 180 ° in the circumferential direction of the inner wall of the mounting hole 110, and similarly, as shown in fig. 6, two second local flange bosses 220 on the terminal post 200 are also disposed at an interval of 180 ° in the circumferential direction of the terminal post 200, and the second local flange bosses 220 are disposed opposite to the first local flange bosses 120, so that when the terminal post 200 is subjected to a pressure from above the top cover 100, the first local flange bosses 120 can support the second local flange bosses 220, thereby preventing the terminal post 200 from being separated from the top cover 100 due to the pressure, improving the working reliability of the cell cover plate, and preventing the cell from leaking liquid; in another embodiment, three first partial flange bosses 120 may also be provided at intervals of 120 ° in the circumferential direction of the inner wall of the mounting hole 110, and likewise, three second partial flange bosses 220 on the pole 200 are also provided at intervals of 120 ° in the circumferential direction of the pole 200; in other embodiments, four first partial flange bosses 120 may be disposed at 90 ° intervals in the circumferential direction of the inner wall of the mounting hole 110, and similarly, four second partial flange bosses 220 on the pole 200 may be disposed at 90 ° intervals in the circumferential direction of the pole 200.
Preferably, the spacing between the plurality of first partial flange bosses 120 is equal to or greater than each of the second partial flange bosses 220, when the cell cover plate is assembled, the terminal post 200 is installed into the installation hole 110 from the bottom of the top cover plate 100, at this time, the second partial flange boss 220 penetrates through the gap between the first partial flange boss 120 and the first partial flange boss 120, the flange boss 210 is connected with the top cover plate 100, then, the pole 200 is rotated, so that the first local flange boss 120 is located between the second local flange boss 220 and the flange boss 210, the first local flange boss 120 is connected with the second local flange boss 220 and the flange boss 210 along the axial direction of the pole 200, and the external tensile force and pressure load on the pole 200 are resisted together, and if the second local flange boss 220 is larger than the gap between the first local flange boss 120 and the first local flange boss 120, the assembly cannot be completed.
Further, the top cover plate 100 may be made of an aluminum alloy material, and compared with a top cover plate made of an insulating plastic in the prior art, the aluminum alloy material has high tensile strength and high pressure strength, so that the capability of the battery cell cover plate for resisting external tensile and compressive loads can be improved, and the working reliability of the battery cell cover plate can be improved. In one embodiment, top cover sheet 100 may be formed by die-casting.
Preferably, two mounting holes 110 may be provided on the top cover plate 100, and the corresponding poles 200 include positive poles 200 and negative poles 200, and when the above-mentioned cell cover plate is assembled, one of the mounting holes 110 is connected with the positive pole 200, and the other mounting hole 110 is connected with the negative pole 200.
Preferably, go up insulating plastic circle 400 and adopt insulating material to make, can play the insulation to utmost point post 200 and top cap piece 100, avoid top cap piece 100 electrified, prevent that the staff from electrocuteeing, can improve the security performance of above-mentioned electric core apron.
Preferably, still refer to fig. 6, flange boss 210 can adopt the whole circle structure, because during the assembly of above-mentioned electric core cover plate, flange boss 210 will be with top-cover plate 100 sealing connection, and utmost point post 200 need wear to locate mounting hole 110 on top-cover plate 100, utmost point post 200 is mostly the cylinder, for the installation of cooperation utmost point post 200, mounting hole 110 generally establishes to circularly, set up flange boss 210 into the whole circle structure, can increase flange boss 210 and top-cover plate 100's area of contact, improve the leakproofness between flange boss 210 and the top-cover plate 100, improve utmost point post 200 and resist the ability from the pulling force on top-cover plate 100 upper portion.
Further, as shown in fig. 7, a groove 310 may be formed in the bottom cap piece 300, after the bottom cap piece 300 and the top cap piece 100 are assembled, the flange boss 210 and the groove 310 should be in sealed connection, the size of the groove 310 should be enough to accommodate the flange boss 210, the bottom cap piece 300 plays a role in supporting and fixing the terminal 200, after the top cap piece 100, the bottom cap piece 300 and the terminal 200 are assembled, the terminal 200 cannot move in the radial direction, and then the upper insulating plastic ring 400 is assembled, so that the terminal 200 is prevented from being skewed, and the machining accuracy of the battery cell cover plate is improved. In one embodiment, the top cover sheet 100 and the bottom cover sheet 300 may be connected by means of a bolt connection; in other embodiments, the top cover sheet 100 and the bottom cover sheet 300 may be connected by a snap-fit manner, and the manner of fixedly connecting the top cover sheet 100 and the bottom cover sheet 300 is within the scope of the present application.
Preferably, the flange boss 210 and the groove 310 can be sealed by the sealing ring 500, the sealing ring 500 is sleeved on the outer edge of the flange boss 210 and is arranged between the flange boss 210 and the groove 310, the flange boss 210 and the groove 310 are sealed, liquid leakage of the battery cell is prevented, when the battery cell cover plate is assembled, the sealing ring 500 can be compressed by 0.5mm and is arranged between the flange boss 210 and the groove 310, the sealing ring 500 in a compressed state can be better attached between the flange boss 210 and the groove 310 by utilizing the deformation performance of the sealing ring 500, the sealing effect caused by the uneven surfaces of the flange boss 210 and the groove 310 is avoided, and the sealing performance of the battery cell cover plate can be improved.
Preferably, the groove 310 is provided with a mounting hole 320, and in use, a connecting plate is connected to the bottom of the pole 200 through the mounting hole 320, and the pole 200 is connected to the pole lug through the connecting plate. In one embodiment, the terminal post 200 may be connected to the connecting plate by ultrasonic welding.
Preferably, the bottom cover 300 may be made of an insulating material, such as plastic, to prevent the battery from short-circuiting due to the contact between the terminal 200 and the bottom cover 300, and specifically, the bottom cover 300 may be made by injection molding, which can simplify the manufacturing process and is suitable for mass production.
Further, can also set up one on above-mentioned electric core apron and annotate liquid hole 700, annotate liquid hole 700 will communicate with the battery is inside, through annotating liquid hole 700 with electrolyte according to the volume of needs pour into the battery inside, in order to avoid electric core weeping, need will annotate the liquid mouth after accomplishing to annotate liquid and seal, can adopt to beat modes such as plug, aluminum sheet laser sealing, beat steel ball and point and glue and seal the notes liquid mouth of the battery of accomplishing to annotate liquid and seal.
Preferably, the tracing two-dimensional code 800 may be disposed on the top cover sheet 100, and the battery assembly information and the tracing two-dimensional code 800 are bound and transmitted to the background database for storage, so as to form the information related to the battery in the background database.
The embodiment further provides a battery cell, which includes the above-mentioned cell cover plate, and the battery cell is connected to the terminal 200 on the cell cover plate.
The embodiment further provides a battery module including the battery cell.
The embodiment also provides a battery pack comprising the battery module.
According to the utility model, the first local flange boss 120 on the top cover plate 100 is arranged between the second local flange boss 220 and the flange boss 210 on the pole 200, and the first local flange boss 120, the second local flange boss 220 and the flange boss 210 are connected along the axial direction of the pole 200, so that the capacity of the pole 200 for bearing external tensile force and pressure can be effectively increased; the upper insulating seal ring 500 is arranged between the inner wall of the mounting hole 110 and the outer surface of the pole 200, so that the upper insulating seal ring 500 is filled in a gap between the second local flange boss 220 and the second local flange boss 220, the rotation of the pole 200 is blocked by the strength performance of the upper insulating plastic ring 400, the torque resistance of the pole 200 is improved, and meanwhile, the upper insulating plastic ring 400 can also play a role in sealing and insulating; the top cover plate 100 is made of aluminum alloy, can bear large external force, and is high in reliability. Through the structure, the capacity of bearing external load of the pole 200 can be improved, so that the capacity of preventing leakage of the battery core cover plate is improved.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the utility model. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A cell cover plate, comprising:
the top cover plate (100) is provided with a mounting hole (110), and the inner wall of the mounting hole (110) is provided with a first local flange boss (120);
the pole post (200) is arranged in the mounting hole (110) in a penetrating mode, the pole post (200) comprises a flange boss (210) and a second local flange boss (220), the flange boss (210) is connected to the bottom of the top cover plate (100) in a sealing mode, and the first local flange boss (120) is arranged between the flange boss (210) and the second local flange boss (220) in the axial direction of the pole post (200) and is connected with the flange boss (210) and the second local flange boss (220) respectively;
and the bottom cover plate (300) is connected with the top cover plate (100) and used for supporting and fixing the pole (200).
2. The cell cover plate of claim 1, further comprising an upper insulating plastic ring (400), wherein the upper insulating plastic ring (400) is disposed between an outer peripheral side of the pole (200) and an inner wall of the mounting hole (110).
3. The cell cover plate of claim 2, wherein the upper insulating plastic ring (400) is formed between the outer peripheral side of the pole (200) and the inner wall of the mounting hole (110) by injection molding.
4. The cell cover plate of claim 1, wherein a groove (310) is formed in the bottom cover plate (300), and the flange boss (210) is hermetically connected with the groove (310).
5. The cell cover plate of claim 4, further comprising a sealing ring (500), wherein the sealing ring (500) is disposed between the flange boss (210) and the groove (310).
6. The cell cover plate according to claim 1, wherein the first partial flange protrusions (120) are provided in plurality in a circumferential direction of an inner wall of the mounting hole (110), the first partial flange protrusions (120) are provided in plurality at intervals, the second partial flange protrusions (220) are provided in plurality at intervals in a circumferential direction of an outer circumferential side of the terminal post (200), the second partial flange protrusions (220) are provided in plurality at intervals, and each of the first partial flange protrusions (120) is provided between one of the second partial flange protrusions (220) and the flange protrusion (210) in an axial direction of the terminal post (200).
7. The cell cover plate according to any one of claims 1 to 6, wherein an explosion-proof valve (600) is further disposed on the top cover sheet (100), and an explosion-proof valve (600) protection sheet is disposed outside the explosion-proof valve (600).
8. A battery cell comprising the cell cover plate of any of claims 1-7.
9. A battery module comprising the battery cell of claim 8.
10. A battery pack comprising the battery module according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122450234.4U CN216250918U (en) | 2021-10-12 | 2021-10-12 | Battery core cover plate, battery core, module and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122450234.4U CN216250918U (en) | 2021-10-12 | 2021-10-12 | Battery core cover plate, battery core, module and battery pack |
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| Publication Number | Publication Date |
|---|---|
| CN216250918U true CN216250918U (en) | 2022-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122450234.4U Active CN216250918U (en) | 2021-10-12 | 2021-10-12 | Battery core cover plate, battery core, module and battery pack |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115579591A (en) * | 2022-11-14 | 2023-01-06 | 深圳海润新能源科技有限公司 | Cover plate assembly, battery assembling method, battery pack and electric equipment |
| CN116581495A (en) * | 2023-07-12 | 2023-08-11 | 深圳海辰储能控制技术有限公司 | Insulating part, end cover assembly, energy storage device and electric equipment |
| CN116581445A (en) * | 2023-07-12 | 2023-08-11 | 深圳海辰储能控制技术有限公司 | Lower plastic, end cover assembly, energy storage device and energy storage system |
-
2021
- 2021-10-12 CN CN202122450234.4U patent/CN216250918U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115579591A (en) * | 2022-11-14 | 2023-01-06 | 深圳海润新能源科技有限公司 | Cover plate assembly, battery assembling method, battery pack and electric equipment |
| US11901577B1 (en) | 2022-11-14 | 2024-02-13 | Shenzhen Hithium Energy Storage Technology Co., Ltd. | Cover plate assembly, battery, and method for assembling battery |
| CN116581495A (en) * | 2023-07-12 | 2023-08-11 | 深圳海辰储能控制技术有限公司 | Insulating part, end cover assembly, energy storage device and electric equipment |
| CN116581445A (en) * | 2023-07-12 | 2023-08-11 | 深圳海辰储能控制技术有限公司 | Lower plastic, end cover assembly, energy storage device and energy storage system |
| CN116581495B (en) * | 2023-07-12 | 2024-04-30 | 深圳海辰储能控制技术有限公司 | Insulating part, end cover assembly, energy storage device and electric equipment |
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