CN217468605U - Safety top cover of power battery - Google Patents
Safety top cover of power battery Download PDFInfo
- Publication number
- CN217468605U CN217468605U CN202221501022.2U CN202221501022U CN217468605U CN 217468605 U CN217468605 U CN 217468605U CN 202221501022 U CN202221501022 U CN 202221501022U CN 217468605 U CN217468605 U CN 217468605U
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- pole
- ring
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- mounting groove
- groove
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- 238000003825 pressing Methods 0.000 claims abstract description 59
- 230000006835 compression Effects 0.000 claims abstract description 11
- 238000007906 compression Methods 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 119
- 230000002093 peripheral effect Effects 0.000 claims description 24
- 239000011247 coating layer Substances 0.000 claims description 20
- 238000001746 injection moulding Methods 0.000 claims description 16
- 238000009413 insulation Methods 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 238000004880 explosion Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 4
- 206010063659 Aversion Diseases 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 description 18
- 238000000576 coating method Methods 0.000 description 18
- 239000004033 plastic Substances 0.000 description 9
- 229920003023 plastic Polymers 0.000 description 9
- 238000003466 welding Methods 0.000 description 9
- 238000009434 installation Methods 0.000 description 7
- 239000003792 electrolyte Substances 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009422 external insulation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009421 internal insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/172—Arrangements of electric connectors penetrating the casing
- H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
- H01M50/176—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for prismatic or rectangular cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/183—Sealing members
- H01M50/184—Sealing members characterised by their shape or structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/183—Sealing members
- H01M50/186—Sealing members characterised by the disposition of the sealing members
- H01M50/188—Sealing members characterised by the disposition of the sealing members the sealing members being arranged between the lid and terminal
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/552—Terminals characterised by their shape
- H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model discloses a safety top cover of a power battery, which comprises a cover plate, a first pole column mounting groove and a second pole column mounting groove which are formed on the cover plate, and a first pole column and a second pole column which are respectively arranged in the corresponding pole column mounting grooves, wherein pole column compression rings are respectively integrally formed on the cover plate around the outer edges of the corresponding mounting grooves; the pole compression ring is provided with an annular body integrally formed on the cover plate around the outer edge of the corresponding mounting groove, a pressing and holding part formed by inwards extending from the upper end of the annular body and a first avoidance part arranged at an interval with the pressing and holding part; the first pole and the second pole respectively comprise a cylindrical main body, a second avoidance part and a positioning convex part, wherein the second avoidance part and the positioning convex part are formed on the periphery of the cylindrical main body and respectively correspond to the pressing part and the first avoidance part; after the utmost point post was arranged in corresponding the mounting groove respectively, the location convex part with press the portion of holding to overlap on the horizontal projection face at least part to carry out prepositioning to the utmost point post in power battery's assembling process, thereby avoid utmost point post aversion, improve power battery's stability, and simple structure.
Description
Technical Field
The utility model relates to a power battery technical field especially relates to a power battery's safe top cap.
Background
The power battery comprises a plurality of battery monomers, a confluence assembly and a pair of poles, wherein the battery monomers are connected in parallel, and the pair of poles are electrically connected with the confluence assembly and transmit electric energy out. Liquid substances such as electrolyte are injected into the power battery, the sealing performance of the power battery needs to be maintained, and in order to maintain the sealing performance, the pole column, the cover plate and the plastic part of the power battery need to be electrically isolated and sealed.
The existing power battery is generally characterized in that a sealing element is sleeved on the lower side of a cover plate and clamped and fixed by a welding ring, meanwhile, a pole column is also pre-fixed by the welding ring, but the welding ring does not completely fix the pole column, so that the position of the pole column is difficult to accurately position during subsequent injection molding, and the displacement of the pole column is possibly caused, so that the sealing performance of the sealing element is reduced.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a safety top cover for a power battery to solve the problem that the positioning of the pole is difficult and the sealing performance is not high in the prior art.
In order to achieve the above purpose, the utility model provides a safety top cover of a power battery, which comprises a cover plate, a first pole column mounting groove and a second pole column mounting groove formed on the cover plate, a first sealing element and a first pole column arranged in the first pole column mounting groove, a second sealing element and a second pole column arranged in the second pole column mounting groove, a first pole column compression ring integrally formed on the cover plate around the outer edge of the first mounting groove, and a second pole column compression ring integrally formed on the cover plate around the outer edge of the second mounting groove; the first pole pressing ring and the second pole pressing ring are respectively provided with an annular body integrally formed on the cover plate around the outer edge of the corresponding mounting groove, a pressing and holding part formed by extending inwards from the upper end of the annular body and a first avoiding part formed beside the pressing and holding part along the annular body; the first pole and the second pole respectively comprise a cylindrical main body, a positioning convex part formed on the periphery of the cylindrical main body and corresponding to the position of the first avoidance part, and a second avoidance part formed on the cylindrical main body and corresponding to the position of the pressing and holding part; after the first pole column and the second pole column are respectively arranged in the first mounting groove and the second mounting groove, the positioning convex part and the pressing and holding part are at least partially overlapped on a horizontal projection surface.
Furthermore, the pressing and holding part comprises a plurality of pressing and holding blocks which are distributed at intervals at the upper end of the annular body along the circumferential direction of the annular body, each pressing and holding block extends inwards from the upper end of the annular body to form, and the first avoidance part comprises a first avoidance port formed between every two adjacent pressing and holding blocks; the positioning convex part comprises a positioning lug formed on the periphery of the cylindrical main body and corresponding to the position of the first avoidance port, and the second avoidance part comprises a second avoidance port formed on the periphery of the cylindrical main body and corresponding to the position of the pressing and holding block.
Furthermore, the first pole mounting groove and the second pole mounting groove are respectively provided with a first mounting hole vertically penetrating through the cover plate, a first convex ring protruding upwards around the periphery of the first mounting hole and a press-fitting ring groove formed on the periphery of the first convex ring, the first sealing element and the second sealing element respectively comprise an annular sealing gasket pressed on the first convex ring, a sealing inner ring formed by downward extending from the inner periphery of the annular sealing gasket and a sealing outer ring formed by downward extending from the periphery of the annular sealing gasket, and the sealing outer ring, the sealing inner ring and the annular sealing gasket are enclosed to form a buckling groove with an opening downward for buckling with the first convex ring; when the buckling groove is buckled on the first convex ring, the sealing outer ring is pressed in the pressing ring groove, the sealing inner ring is embedded in the first mounting hole, and the annular sealing gasket is pressed on the first convex ring and the upper surface of the first convex ring is abutted to the lower surface of the corresponding pole.
Furthermore, a lower connecting portion with a diameter matched with the inner diameter of the sealing inner ring is formed by extending downwards the lower surface of the cylindrical main body, when the first pole column and the second pole column are respectively arranged in the first pole column mounting groove and the second pole column mounting groove, the lower surface of the cylindrical main body is pressed on the annular sealing gasket, and the lower connecting portion is sleeved in the sealing inner ring to penetrate through the first mounting hole to be electrically connected with a battery tab.
Furthermore, the first pole column mounting groove and the second pole column mounting groove are respectively provided with an insulating ring groove formed outside the press-fitting ring groove, and the bottom surface of the insulating ring groove is higher than that of the press-fitting ring groove; the height of the sealing outer ring is greater than the depth of the press-fitting ring groove, and when the sealing outer ring is buckled in the press-fitting ring groove, the annular sealing pad is higher than the groove bottom surface of the insulating ring groove; when the first pole column and the second pole column are respectively arranged in the first pole column mounting groove and the second pole column mounting groove, an insulating injection molding space is formed among the insulating ring groove, the outer peripheral surface of the corresponding pole column and the corresponding pole column compression ring;
power battery's safety top cap still is including making first utmost point post with the insulating first insulating part who keeps apart of apron and messenger the second utmost point post with the insulating second insulating part who keeps apart of apron, first insulating part and second insulating part all including integrative mould plastics form in the insulating internal insulation coating in the space of moulding plastics, form in the last insulating coating that corresponds utmost point post clamping ring upper surface and be formed at the external insulation coating that corresponds utmost point post clamping ring outer peripheral face.
Furthermore, the first pole column and the second pole column respectively further comprise a second convex ring formed on the periphery of the cylindrical main body, the positioning convex blocks are formed on the periphery of the second convex ring at positions corresponding to the first avoidance ports, and the second avoidance ports are formed on the periphery of the second convex ring and are positioned between every two adjacent positioning convex blocks; a positioning concave ring matched with the second convex ring is formed on the inner peripheral surface of the inner insulating coating layer, a matched positioning groove is formed at the position, corresponding to the positioning convex block, of the inner peripheral surface of the inner insulating coating layer, and a first convex part protruding inwards is formed at the position, corresponding to the second avoiding opening, of the inner peripheral surface of the inner insulating coating layer; the outer peripheral face of the inner insulation coating layer is provided with a second convex portion protruding outwards corresponding to the position below the pressing block, the pressing block presses the upper surface of the second convex portion, and a third convex portion embedded downwards into the first avoiding opening and connected with the inner insulation coating layer is formed at the position corresponding to the first avoiding opening on the upper insulation coating layer.
Furthermore, the upper surface of the cylindrical main body protrudes upwards to form an upper connecting part which is electrically connected with an external electric element; the upper surface of the upper insulating coating layer is lower than the upper surface of the upper connecting part.
The lower insulating plate is pressed at the bottom of the cover plate, a second mounting hole matched with the first mounting hole is formed in the position, corresponding to the first mounting hole, of the lower insulating plate, an annular boss protruding upwards is formed at the edge of the second mounting hole, and the upper surface of the annular boss is abutted to the lower surface of the sealing inner ring; the lower ends of the first pole column and the second pole column sequentially penetrate through the first mounting hole and the second mounting hole downwards to be electrically connected with the battery pole lug.
The explosion-proof mechanism comprises an explosion-proof sheet fixedly arranged in the explosion-proof hole and a protective film fixedly arranged at the bottom of the explosion-proof sheet.
Furthermore, the liquid injection device also comprises a liquid injection hole formed on the cover plate.
The utility model discloses an integrated into one piece has the utmost point post clamping ring of pressing portion and the first portion of dodging and sets up on first utmost point post and second utmost point post and press portion and the first location convex part and the second of dodging the portion complex of dodging to make when assembling utmost point post, through pressing the portion of holding and the second of dodging, the first portion of dodging and the mutual cooperation of location convex part, can carry out prepositioning to utmost point post to avoid leading to utmost point post aversion because of the mobility of the material of moulding plastics in the injection moulding process; simultaneously, through set up first bulge loop and pressure equipment annular in the mounting groove, through the cooperation of utmost point post main part with first bulge loop and pressure equipment annular, can hold the sealing member pressure in the mounting groove, need not additionally to set up the fixed knot structure of sealing member, simplify power battery's structure, promoted power battery's reliability. In addition, the pole pressing ring on the cover plate is of an integrally formed structure, so that the laser welding process can be reduced, the problems of partial welding, sunken or interrupted welding line, air holes and the like in the welding process are avoided, and the reliability of the power battery is further improved.
Drawings
Fig. 1 is a schematic structural diagram of a safety top cover of a power battery of the present invention.
Fig. 2 is an exploded view of fig. 1.
Fig. 3 is a sectional view of the first pole in fig. 1 at the location of the first pole.
Fig. 4 is a top view of the present invention (without insulation).
Fig. 5 is a view from the direction of a-a in fig. 4.
Fig. 6 is an enlarged schematic view of fig. 5 at B.
Fig. 7 is a schematic structural view of the first sealing member and the second sealing member in fig. 2.
Fig. 8 is a structural view of the cover plate of fig. 2.
Fig. 9 is an enlarged structural view at C in fig. 8.
Fig. 10 is a longitudinal sectional view of the cap plate of fig. 8.
Fig. 11 is an enlarged structural view at D in fig. 10.
Fig. 12 is a schematic structural view of the first pole and the second pole in fig. 2.
Fig. 13 is a schematic structural view of the first insulating member and the second insulating member in fig. 2.
Fig. 14 is a top view of fig. 13.
Fig. 15 is a view from the direction of E-E in fig. 13.
Fig. 16 is a view from the direction F-F in fig. 13.
The specification reference numbers:
the cover plate 1, the first pole post mounting groove 11a, the second pole post mounting groove 11b, the first mounting hole 111, the first bulge loop 112, the press-fitting ring groove 113, the insulating ring groove 114, the first pole post press ring 12a, the second pole post press ring 12b, the annular body 121, the press-holding portion 122, the press-holding block 122a, the first escape portion 123, the first escape opening 123a, the explosion-proof hole 13, the liquid injection hole 14, the first pole post 2a, the cylindrical body 21, the positioning convex portion 22, the positioning convex block 22a, the second escape portion 23, the second escape opening 23a, the second bulge loop 24, the lower connecting portion 25, the upper connecting portion 26, the second pole post 2b, the first sealing member 3a, the annular sealing gasket 31, the sealing inner ring 32, the sealing outer ring 33, the snap-in groove 34, the second sealing member 3b, the first insulating member 4a, the second insulating member 4b, the inner insulating coating 41, the positioning bulge loop 41a, the first convex portion 41b, the second convex portion 41c, and the second convex portion 41c, The explosion-proof structure comprises an upper insulating coating 42, a third convex part 42a, an outer insulating coating 43, a special-shaped insulating groove 44, a lower insulating plate 5, a second mounting hole 51, an annular boss 52, a pressing block 53, an insulating injection molding space 6, an explosion-proof mechanism 7, an explosion-proof sheet 71 and a protective film 72.
Detailed Description
The following is further detailed by way of specific embodiments:
examples
As shown in fig. 1 to 3, the safety top cap for a power battery of the present embodiment includes a cover plate 1, a first pole mounting groove 11a and a second pole mounting groove 11b formed on the cover plate 1, a first sealing member 3a and a first pole 2a disposed in the first pole mounting groove 11a, and a second sealing member 3b and a second pole 2b disposed in the second pole mounting groove 11 b. The first pole column 2a and the second pole column 2b are used for realizing the electric connection between the positive and negative pole ears of the battery core in the power battery and an external electric element; first sealing member 3a presses and holds between the lower surface of first utmost point post mounting groove 11a and first utmost point post 2a, second sealing member 3b presses and holds between the lower surface of second utmost point post mounting groove 11b and second utmost point post 2b to realize the sealed of power battery top cap, avoid the electrolyte in the power battery to reveal. The first pole 2a and the second pole 2b are insulated and isolated from the cover plate 1 through a first insulating part 4a and a second insulating part 4b respectively, and the first insulating part 4a and the second insulating part 4b are formed by adopting an injection molding process. The utility model discloses a battery, including apron 1 lower surface, first utmost point post 2a, second utmost point post 2b, first utmost point post 2a and second utmost point post 2b, apron 1 lower surface be formed with the lower insulating part of apron 1 looks adaptation, the insulating part lower surface be formed with first flexible connectors (not shown) of first utmost point post 2a electric connection and with second flexible connectors (not shown) of second utmost point post 2b electric connection down, the lower surface of first utmost point post 2a and second utmost point post 2b is respectively through the positive negative pole ear electric connection of first flexible connectors and second flexible connectors and battery, the upper surface and the outside electric element electric connection of first utmost point post 2a and second utmost point post 2 b.
As shown in fig. 4 to 7, the first pole mounting groove 11a and the second pole mounting groove 11b both have a first mounting hole 111, a first protruding ring 112 and a press-fitting ring groove 113, the first mounting hole 111 vertically penetrates through the cover plate 1, so as to be used for mounting the first sealing element 3a and the second sealing element 3b in cooperation with the first protruding ring 112 and the press-fitting ring groove 113, and provide a passage for electrically connecting the first pole 2a and the second pole 2b with the positive and negative poles of the battery cell. The first convex ring 112 protrudes upwards around the periphery of the first mounting hole 111, and is used for supporting the corresponding positions of the first sealing element 3a and the second sealing element 3b and matching the corresponding poles to press and hold the first sealing element 3a and the second sealing element 3 b; the press-fitting ring groove 113 is formed in the outer circumference of the first protrusion ring 112 for receiving the corresponding ends of the first and second sealing members 3a and 3 b. Specifically, the first sealing element 3a and the second sealing element 3b both include an annular sealing gasket 31, and a sealing inner ring 32 and a sealing outer ring 33 formed on the inner and outer sides of the annular sealing gasket 31, the lower surface of the annular sealing gasket 31 is supported on the upper surface of the first convex ring 112, and is pressed and held on the first convex ring 112 through a corresponding pole to realize the sealing of the power battery. The sealing inner ring 32 extends downwards from the inner periphery of the annular sealing gasket 31, the outer diameter of the sealing inner ring 32 is matched with the inner diameter of the first mounting hole 111, and the inner diameter of the sealing inner ring 32 is matched with the diameters of the corresponding ends of the first pole post 2a and the second pole post 2b, so that when the first pole post 2a and the second pole post 2b are respectively mounted in the first pole post mounting groove 11a and the second pole post mounting groove 11b, the corresponding ends of the first pole post 2a and the second pole post 2b are sleeved in the sealing inner ring 32 and matched with the inner wall of the first convex ring 112 to extrude the sealing inner ring 32; the sealing outer ring 33 is formed by extending downwards from the periphery of the annular sealing gasket 31, the inner diameter of the sealing outer ring 33 is matched with the inner diameter of the press-fitting ring groove 113, and the outer diameter of the sealing outer ring 33 is matched with the outer diameter of the press-fitting ring groove 113, so that the lower end of the sealing outer ring 33 can be pressed and mounted in the press-fitting ring groove 113, and the first sealing element 3a and the second sealing element 3b are positioned through matching of the sealing outer ring 33 and the press-fitting ring groove 113, so that the first sealing element 3a and the second sealing element 3b can be rapidly mounted during assembly; meanwhile, the height of the sealing outer ring 33 is larger than the depth of the press-fitting annular groove 113, so that the sealing outer ring 33 can be tightly attached to the groove bottom of the press-fitting annular groove 113 under the pressing of the corresponding pole when being pressed in the press-fitting annular groove 113, and the sealing reliability is improved. The sealing outer ring 33, the sealing inner ring 32 and the annular sealing gasket 31 are enclosed to form a buckling groove 34 with a downward opening for buckling with the first convex ring 112; during the assembly, will buckle groove 34 lock-in on first bulge loop 112, sealed outer lane 33 pressure equipment in the pressure equipment annular 113, sealed inner circle 32 imbeds in the first mounting hole 111, annular seal pad 31 is pressed on first bulge loop 112 and the lower surface butt of upper surface and corresponding utmost point post to further improve sealed reliability.
As shown in fig. 8 to 11, a first pole compression ring 12a and a second pole compression ring 12b are respectively integrally formed on the cover plate 1 around the outer edges of the first mounting groove and the second mounting groove, the first pole 2a is matched with the first pole compression ring 12a to press the first sealing element 3a between the first pole mounting groove 11a and the first pole 2a, and the second pole 2b is matched with the second pole mounting groove 11b to press the second sealing element 3b between the second pole mounting groove 11b and the second pole 2b, so as to seal the power battery. In this embodiment, first utmost point post clamping ring 12a and second utmost point post clamping ring 12b preferably adopt aluminium, or the integrative stamping forming of apron 1 of steel alloy material, reducible laser welding process step, and do not have the welding seam between first utmost point post clamping ring 12a after the shaping and second utmost point post clamping ring 12b and apron 1, and its reliability is higher. First utmost point post clamping ring 12a and second utmost point post clamping ring 12b all have an annular body 121, press and hold portion 122 and first dodge portion 123, annular body 121 around the outer fringe integrated into one piece that corresponds the mounting groove in on the apron 1, just annular body 121 upwards protrudes in order to form a accommodation space that can hold utmost point post. The pressing and holding portion 122 is formed by extending from the upper end of the annular body 121 inwards, the first avoiding portion 123 is formed by the annular body 121 beside the pressing and holding portion 122, so that a notch is formed at a position on the annular body 121 corresponding to the side of the pressing and holding portion 122, and the pressing and holding portion 122 and the first avoiding portion 123 can be matched with corresponding positions of the first pole 2a and the second pole 2b to enable the first pole 2a and the second pole 2b to be positioned in the accommodating space in a predetermined manner during top cover assembly, thereby avoiding displacement of the first pole 2a and the second pole 2b caused by injection molding of the first insulating piece 4a and the second insulating piece 4 b.
In this embodiment, for improving the reliability that first utmost point post 2a and second utmost point post 2b were fixed a position, press holding portion 122 to include along annular body 121 circumferential interval distribution in a plurality of pressure holding piece 122a of annular body 121 upper end, each pressure holding piece 122a is all certainly annular body 121's upper end internal extension and form for when first utmost point post 2a and second utmost point post 2b install in the utmost point post mounting groove that corresponds, with the cooperation of the corresponding position of first utmost point post 2a and second utmost point post 2b in order to carry out prepositioning to first utmost point post 2a and second utmost point post 2b, when avoiding the insulating part of moulding plastics, first utmost point post 2a and second utmost point post 2b shift and drop even from the utmost point post mounting groove that corresponds. First portion 123 of dodging is including forming at every adjacent two first mouth 123a of dodging between pressing holding piece 122a, first internal diameter of dodging mouth 123a is greater than press holding piece 122 a's internal diameter to dodge first utmost point post 2a and second utmost point post 2 b's corresponding position when the assembly, make first utmost point post 2a and second utmost point post 2b can via first mouthful 123a of dodging assembles in the utmost point post mounting groove that corresponds.
As shown in fig. 12, each of the first pole post 2a and the second pole post 2b includes a cylindrical main body 21, a positioning protrusion 22 and a second escape portion 23, and the diameter of the cylindrical main body 21 is smaller than the inner diameter of the pressing block 122a, so that the first pole post 2a and the second pole post 2b can be mounted in the pole post mounting grooves. In this embodiment, the first pole 2a and the second pole 2b are made of aluminum, copper or copper-aluminum composite material, so as to achieve electric conduction between the battery core of the power battery and an external electrical component. The positioning convex portion 22 is formed on the outer periphery of the cylindrical body 21 corresponding to the first escape portion 123, the second escape portion 23 is formed on the outer periphery of the cylindrical body 21, and corresponds to the position of the pressing portion 122, so that when the first pole post 2a and the second pole post 2b are assembled, the first escape portion 123 can escape the positioning convex portion 22, and the second escape portion 23 can escape the pressure holding portion 122, and the first pole post 2a and the second pole post 2b are respectively installed in the first pole post installation groove 11a and the second pole post installation groove 11b, then, the first pole post 2a and the second pole post 2b are rotated by an angle, so that the positioning convex portion 22 and the pressing portion 122 are at least partially overlapped on a horizontal projection plane, thereby realizing the pre-positioning of the first pole post 2a and the second pole post 2 b.
The positioning convex part 22 comprises a plurality of positioning bumps 22a formed on the outer periphery of the cylindrical main body 21, and the positioning bumps 22a correspond to the first avoidance port 123a in position, so that the first avoidance port 123a avoids the positioning bumps 22 a; the second dodges the portion 23 including form in a plurality of seconds on the cylindricality main part 21 periphery dodge mouth 23a, the second dodge mouth 23a with press the position of holding piece 122a corresponding and be located between every two adjacent location lugs 22a to make the second dodge mouth 23a to pressing holding piece 122a to dodge, first utmost point post 2a and second utmost point post 2b assemble the completion after, location lug 22a with press holding piece 122a at least part overlap on the horizontal projection face. Specifically, every location lug 22a is all certainly the corresponding position of cylindricality main part 21 periphery outwards extends and forms, the diameter of location lug 22a is less than the first internal diameter of dodging mouth 123a and is greater than the internal diameter of pressing and holding piece 122a, simultaneously, the diameter of the second dodging mouth 23a is less than press and hold the internal diameter of piece 122a to when first utmost point post 2a and second utmost point post 2b assemble, dodge mouthful 123a, the second through location lug 22a and the first cooperation of dodging mouth 23a and pressing and holding piece 122a, can assemble in the utmost point post mounting groove that corresponds to carry out prepositioning to first utmost point post 2a and second utmost point post 2b through location lug 22a and the cooperation of pressing and holding piece 122a after the installation. In this embodiment, a second protruding ring 24 is formed on the outer peripheral surface of the cylindrical body 21 and protrudes outward, the positioning protrusion 22a is formed on the outer periphery of the second protruding ring 24 and corresponds to the position of the first avoiding opening 123a, and the second avoiding opening 23a is formed on the outer periphery of the second protruding ring 24 and corresponds to the position between every two adjacent positioning protrusions 22 a.
In this embodiment, the cylindrical main body 21 further has a lower connection portion 25 extending downward from the lower surface of the cylindrical main body 21, the diameter of the lower connection portion 25 is adapted to the inner diameter of the sealing inner ring 32, so that when the first pole 2a and the second pole 2b are respectively installed in the first pole installation groove 11a and the second pole installation groove 11b, the lower surface of the cylindrical main body 21 is pressed on the annular sealing gasket 31, the lower connection portion 25 can be sleeved into the sealing inner ring 32 to pass through the first installation hole 111 to be connected with the positive and negative pole ear cores of the battery, and meanwhile, the lower connection portion 25 is further matched with the inner wall of the first convex ring 112 to press the sealing inner ring 32, so as to improve the sealing reliability. In addition, the cylindrical body 21 further has an upper connecting portion 26 formed by protruding upward from the upper surface of the cylindrical body 21, and the upper surface of the upper connecting portion 26 is exposed outside the first insulating member 4a and the second insulating member 4b to electrically connect with an external electrical component; in this embodiment, it is preferable that the upper surface of the upper connecting portion 26 is higher than the upper surfaces of the first insulating member 4a and the second insulating member 4b, so as to prevent the first insulating member 4a and the second insulating member 4b from covering the upper surface of the upper connecting portion 26 during the injection molding process.
Referring back to fig. 5, as a preferred mode of the present embodiment, the first pole mounting groove 11a and the second pole mounting groove 11b further have an insulating ring groove 114, the insulating ring groove 114 is formed outside the press-fitting ring groove 113, and the insulating ring groove 114 and the corresponding pole and pole press ring surround to form an insulating injection molding space 6, so as to perform injection molding of an insulating material in the insulating injection molding space 6, thereby achieving electrical isolation between the cover plate 1 and the first pole 2a and the second pole 2 b. Specifically, the tank bottom face of insulating ring groove 114 is higher than the tank bottom face of pressure equipment ring groove 113 ensures that sealed outer lane 33 can the pressure equipment in the pressure equipment ring groove 113, annular seal pad 31 can be higher than the tank bottom face of insulating ring groove 114, with form between insulating ring groove 114 and the outer peripheral face that corresponds the utmost point post and the inner peripheral surface that corresponds the utmost point post clamping ring the insulation space of moulding plastics 6.
As shown in fig. 13-16, the first insulating member 4a and the second insulating member 4b each include an inner insulating coating 41 formed in the insulating injection space 6, an upper insulating coating 42 formed on the upper surface of the corresponding pole ring, and an outer insulating coating 43 formed on the outer peripheral surface of the corresponding pole ring. The inner insulating coating 41, the upper insulating coating 42 and the outer insulating coating 43 are sequentially connected to form a special-shaped insulating groove 44 with a downward opening, and the inner wall of the special-shaped insulating groove 44 (i.e. the outer circumferential surface of the inner insulating coating 41, the lower surface of the upper insulating coating 42 and the inner circumferential surface of the outer insulating coating 43) is profiled with the inner circumferential surface, the upper surface and the outer circumferential surface of the first pole pressing ring 12a and the second pole pressing ring 12b to coat the first pole pressing ring 12a and the second pole pressing ring 12 b; the inner peripheral surfaces of the first insulating part 4a and the second insulating part 4b (i.e. the inner peripheral surface of the inner insulating coating 41) and the outer peripheral surfaces of the first pole 2a and the second pole 2b and the outer peripheral surfaces of the first sealing element 3a and the second sealing element 3b at corresponding positions are profiled so as to wrap the first pole clamping ring 12a and the second pole clamping ring 12b and fill the insulating injection space 6, so that the first pole 2a and the second pole 2b are electrically isolated from the corresponding first pole clamping ring 12a and the second pole clamping ring 12 b. In this embodiment, the first insulating member 4a and the second insulating member 4b are both formed by injection molding of an insulating and corrosion-resistant polymer material (such as PP, PVC, PS, ABS, PC, etc.), and the first insulating member 4a and the second insulating member 4b are formed after curing.
Specifically, a positioning concave ring matched with the second convex ring 24 is formed on the inner peripheral surface of the inner insulating coating 41, a matched positioning concave groove is formed at a position, corresponding to the positioning convex block 22a, on the inner peripheral surface of the inner insulating coating 41, and a first convex part 41b protruding inwards is formed at a position, corresponding to the second avoiding opening 23 a; a second convex portion 41c protruding outwards is formed on the outer peripheral surface of the inner insulating coating layer 41 at a position corresponding to the lower side of the pressing block 122a, the pressing block 122a presses the upper surface of the second convex portion 41c, and a third convex portion 42a embedded downwards into the first avoiding opening 123a and connected with the inner insulating coating layer 41 is formed on the upper insulating coating layer 42 at a position corresponding to the first avoiding opening 123 a.
Referring back to fig. 2, a corresponding second mounting hole 51 is formed on the lower insulating plate 5 at a position corresponding to the first mounting hole 111, and the size of the second mounting hole 51 is matched with that of the first mounting hole 111, so that the pole assembly can contact the electrolyte in the power battery. In order to further increase the sealing performance of the embodiment, an annular boss 52 which protrudes upward and extends into the first mounting hole 111 is formed at the edge of the second mounting hole 51, and the upper surface of the annular boss 52 abuts against the lower surface of the seal inner ring 32 to further squeeze the seal, so that the sealing effect is improved. The lower ends of the first pole post 2a and the second pole post 2b sequentially penetrate through the first mounting hole 111 and the second mounting hole 51 downwards to be electrically connected with the battery tab.
In this embodiment, lower insulation board 5 adopts plastic material injection moulding, the upper surface of lower insulation board 5 is formed with a plurality of erection columns, the lower surface of apron 1 corresponds the position department of erection column is formed with the mounting groove of one-to-one, lower insulation board 5 utilize the fixed pressure equipment of supersound pressure equipment technology through the cooperation of erection column and mounting groove in the bottom of apron 1. Of course, in other embodiments, the lower insulating plate 5 may also be fixed to the bottom of the cover plate 1 in other manners, and this embodiment is not limited. And pressing blocks 53 are respectively formed at the positions of the lower surface of the lower insulating plate 5 corresponding to the two end parts and used for pressing and fixing the battery cell of the power battery. In this embodiment, an explosion-proof mechanism 7 is further fixed on the cover plate 1, and is used for starting the power battery to discharge the internal gas in time after the internal gas pressure of the power battery is increased to a certain value under extreme conditions. Specifically, the explosion-proof mechanism 7 includes an explosion-proof sheet 71 fixedly disposed on the cover plate 1 and a protective film 72 fixedly disposed at the bottom of the explosion-proof sheet 71, and when the air pressure inside the power battery reaches a certain value, the electrolyte will sequentially burst through the protective film 72 and the explosion-proof sheet 71, and release the gas and heat inside the power battery in time to avoid explosion. In order to facilitate the installation of the explosion-proof mechanism 7, an explosion-proof hole 13 which penetrates through the cover plate 1 up and down is arranged at the position of the cover plate 1 corresponding to the explosion-proof mechanism 7, and the explosion-proof sheet 71 is fixedly installed in the explosion-proof hole 13.
In this embodiment, the cover plate 1 is further formed with a liquid injection hole 14 penetrating the cover plate 1 up and down for injecting electrolyte into the power battery after the power battery is packaged.
When the safety top cover of the power battery is assembled, firstly, the integrally formed cover plate 1 and the injection-molded lower insulating plate 5 are pressed and fixed, and the cover plate 1 and the lower insulating plate 5 are arranged on a plane; then, the first sealing element 3a and the second sealing element 3b are respectively arranged in the first pole mounting groove 11a and the second pole mounting groove 11b, so that the sealing outer ring 33 is pressed in the pressing ring groove 113, the sealing inner ring 32 is sleeved on the inner side wall of the first mounting hole 111, and the lower surface of the annular sealing gasket 31 is supported on the upper surface of the first convex ring 112; then, the first pole post 2a and the second pole post 2b are respectively disposed above the pole mounting grooves on the corresponding sides, so that the positioning protrusion 22a is correspondingly disposed above the first avoiding opening 123a, the second avoiding opening 23a is correspondingly disposed above the pressing block 122a, and respectively moving the first pole 2a and the second pole 2b into the first pole mounting groove 11a and the second pole mounting groove 11b, so that the lower connecting part 25 of the pole body is correspondingly sleeved into the sealing inner ring 32, meanwhile, the lower surface of the first pole post 2a is pressed on the upper surface of the annular sealing gasket 31, and then the first pole post 2a and the second pole post 2b are rotated by an angle clockwise or anticlockwise, so that the positioning protrusion 22a gradually moves from the lower part of the first avoidance opening 123a to the lower part of the pressing and holding block 122a, and the rotation angle is limited to the limit that the pole post assembly cannot be separated from the corresponding pole post mounting groove, thereby completing the pre-positioning of the pole post assembly; finally, will accomplish the preset apron 1 of first utmost point post 2a and second utmost point post 2b and arrange in injection moulding device, mould plastics to the upper surface and the outer peripheral face of insulating lodging space and utmost point post clamping ring, treat to form first insulating part 4a and second insulating part 4b after the material solidification of moulding plastics, accomplish the utility model discloses an assembly has simplified structure and technology simultaneously, and easy operation has stronger practicality.
Claims (10)
1. The utility model provides a power battery's safety top cap, including the apron, be formed in first utmost point post mounting groove and second utmost point post mounting groove on the apron, arrange in first sealing member and first utmost point post in the first utmost point post mounting groove, arrange in second sealing member and second utmost point post in the second utmost point post mounting groove, its characterized in that: the first pole clamping ring is integrally formed on the cover plate around the outer edge of the first pole mounting groove, and the second pole clamping ring is integrally formed on the cover plate around the outer edge of the second pole mounting groove; the first pole pressing ring and the second pole pressing ring are respectively provided with an annular body integrally formed on the cover plate around the outer edge of the corresponding mounting groove, a pressing and holding part formed by extending inwards from the upper end of the annular body and a first avoiding part formed beside the pressing and holding part along the inner periphery of the annular body; the first pole and the second pole respectively comprise a cylindrical main body, a positioning convex part formed on the periphery of the cylindrical main body and corresponding to the position of the first avoidance part, and a second avoidance part formed on the cylindrical main body and corresponding to the position of the pressing and holding part; after the first pole column and the second pole column are respectively arranged in the first pole column mounting groove and the second pole column mounting groove, the positioning convex part and the pressing and holding part are at least partially overlapped on a horizontal projection surface.
2. The safety top cover of the power battery according to claim 1, characterized in that: the pressing and holding part comprises a plurality of pressing and holding blocks which are distributed at intervals at the upper end of the annular body along the circumferential direction of the annular body, each pressing and holding block extends inwards from the upper end of the annular body to form, and the first avoidance part comprises a first avoidance port formed between every two adjacent pressing and holding blocks; the positioning convex part comprises a positioning lug formed on the periphery of the cylindrical main body and corresponding to the position of the first avoidance port, and the second avoidance part comprises a second avoidance port formed on the periphery of the cylindrical main body and corresponding to the position of the pressing and holding block.
3. The safety top cover of the power battery as claimed in claim 2, wherein: the first pole mounting groove and the second pole mounting groove are respectively provided with a first mounting hole vertically penetrating through the cover plate, a first convex ring protruding upwards around the periphery of the first mounting hole and a press-fitting annular groove formed on the periphery of the first convex ring, the first sealing element and the second sealing element respectively comprise an annular sealing gasket pressed on the first convex ring, a sealing inner ring formed by extending downwards from the inner periphery of the annular sealing gasket and a sealing outer ring formed by extending downwards from the periphery of the annular sealing gasket, and the sealing outer ring, the sealing inner ring and the annular sealing gasket are enclosed to form a buckling groove with an opening downwards for buckling with the first convex ring; when the buckling groove is buckled on the first convex ring, the sealing outer ring is pressed in the pressing ring groove, the sealing inner ring is embedded in the first mounting hole, and the annular sealing gasket is pressed on the first convex ring and the upper surface of the annular sealing gasket is abutted to the lower surface of the corresponding pole.
4. The safety top cover of the power battery according to claim 3, characterized in that: the lower surface of the cylindrical main body extends downwards to form a lower connecting part with the diameter matched with the inner diameter of the sealing inner ring, when the first pole column and the second pole column are respectively arranged in the first pole column mounting groove and the second pole column mounting groove, the lower surface of the cylindrical main body is pressed on the annular sealing gasket, and the lower connecting part is sleeved in the sealing inner ring to penetrate through the first mounting hole to be electrically connected with a battery tab.
5. The safety top cover of the power battery as claimed in claim 3, wherein: the first pole column mounting groove and the second pole column mounting groove are respectively provided with an insulating ring groove formed outside the press-fitting ring groove, and the bottom surface of the insulating ring groove is higher than that of the press-fitting ring groove; the height of the sealing outer ring is greater than the depth of the press-fitting ring groove, and when the sealing outer ring is buckled in the press-fitting ring groove, the annular sealing pad is higher than the groove bottom surface of the insulating ring groove; when the first pole column and the second pole column are respectively arranged in the first pole column mounting groove and the second pole column mounting groove, an insulating injection molding space is formed among the insulating ring groove, the outer peripheral surface of the corresponding pole column and the corresponding pole column compression ring;
the safety top cover of the power battery is characterized in that the safety top cover of the power battery further comprises a first pole column, a first insulating part and a second insulating part, wherein the first insulating part and the second insulating part are insulated and isolated by the cover plate, the second pole column is insulated and isolated by the cover plate, the first insulating part and the second insulating part respectively comprise an integral injection molding part formed in an inner insulating coating layer in an insulating injection molding space, an upper insulating coating layer formed on the upper surface of the corresponding pole compression ring and an outer insulating coating layer formed on the outer peripheral surface of the corresponding pole compression ring.
6. The safety top cover of the power battery as claimed in claim 5, wherein: the first pole column and the second pole column further comprise second convex rings formed on the peripheries of the cylindrical main bodies, the positioning convex blocks are formed on the peripheries of the second convex rings at positions corresponding to the first avoidance ports, and the second avoidance ports are formed on the peripheries of the second convex rings and are located between every two adjacent positioning convex blocks; a positioning concave ring matched with the second convex ring is formed on the inner peripheral surface of the inner insulating coating layer, a matched positioning groove is formed at the position, corresponding to the positioning convex block, of the inner peripheral surface of the inner insulating coating layer, and a first convex part protruding inwards is formed at the position, corresponding to the second avoiding opening, of the inner peripheral surface of the inner insulating coating layer; the outer peripheral face of the inner insulation coating layer is provided with a second convex portion protruding outwards corresponding to the position below the pressing block, the pressing block presses the upper surface of the second convex portion, and a third convex portion embedded downwards into the first avoiding opening and connected with the inner insulation coating layer is formed at the position corresponding to the first avoiding opening on the upper insulation coating layer.
7. The safety top cover of the power battery as claimed in claim 6, wherein: the upper surface of the cylindrical main body protrudes upwards to form an upper connecting part electrically connected with an external electric element; the upper surface of the upper insulating coating layer is lower than the upper surface of the upper connecting part.
8. The safety top cover of the power battery as claimed in claim 5, wherein: the lower insulating plate is pressed at the bottom of the cover plate, a second mounting hole matched with the first mounting hole is formed in the position, corresponding to the first mounting hole, of the lower insulating plate, an annular boss protruding upwards is formed at the edge of the second mounting hole, and the upper surface of the annular boss is abutted to the lower surface of the sealing inner ring; the lower ends of the first pole and the second pole sequentially penetrate through the first mounting hole and the second mounting hole downwards to be electrically connected with a battery tab.
9. The safety top cover of the power battery as claimed in claim 1, wherein: the anti-explosion mechanism comprises an anti-explosion plate and a protective film, wherein the anti-explosion plate is fixedly arranged in the anti-explosion hole, and the protective film is fixedly arranged at the bottom of the anti-explosion plate.
10. The safety top cover of the power battery as claimed in claim 1, wherein: and the liquid injection hole is formed on the cover plate.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221501022.2U CN217468605U (en) | 2022-06-16 | 2022-06-16 | Safety top cover of power battery |
| PCT/CN2023/100085 WO2023241603A1 (en) | 2022-06-16 | 2023-06-14 | Safe covers of power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221501022.2U CN217468605U (en) | 2022-06-16 | 2022-06-16 | Safety top cover of power battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217468605U true CN217468605U (en) | 2022-09-20 |
Family
ID=83238619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221501022.2U Active CN217468605U (en) | 2022-06-16 | 2022-06-16 | Safety top cover of power battery |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN217468605U (en) |
| WO (1) | WO2023241603A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115320007A (en) * | 2022-10-13 | 2022-11-11 | 宁波震裕科技股份有限公司 | Injection molding pole post forming method and power battery top cover structure |
| CN116779936A (en) * | 2023-08-17 | 2023-09-19 | 宜宾长盈精密技术有限公司 | Pole assembling device and pole assembling jig |
| WO2023241603A1 (en) * | 2022-06-16 | 2023-12-21 | 宜宾长盈精密技术有限公司 | Safe covers of power battery |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN216120513U (en) * | 2021-06-16 | 2022-03-22 | 深圳市长盈精密技术股份有限公司 | Power battery top cover |
| CN216120514U (en) * | 2021-06-16 | 2022-03-22 | 深圳市长盈精密技术股份有限公司 | Power battery top cover |
| CN216054939U (en) * | 2021-09-13 | 2022-03-15 | 宁德新能源科技有限公司 | Hard shell battery cell and power utilization device |
| CN217468605U (en) * | 2022-06-16 | 2022-09-20 | 宜宾长盈精密技术有限公司 | Safety top cover of power battery |
-
2022
- 2022-06-16 CN CN202221501022.2U patent/CN217468605U/en active Active
-
2023
- 2023-06-14 WO PCT/CN2023/100085 patent/WO2023241603A1/en unknown
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023241603A1 (en) * | 2022-06-16 | 2023-12-21 | 宜宾长盈精密技术有限公司 | Safe covers of power battery |
| CN115320007A (en) * | 2022-10-13 | 2022-11-11 | 宁波震裕科技股份有限公司 | Injection molding pole post forming method and power battery top cover structure |
| CN115320007B (en) * | 2022-10-13 | 2023-02-10 | 宁波震裕科技股份有限公司 | Injection molding pole post forming method and power battery top cover structure |
| CN116779936A (en) * | 2023-08-17 | 2023-09-19 | 宜宾长盈精密技术有限公司 | Pole assembling device and pole assembling jig |
| CN116779936B (en) * | 2023-08-17 | 2023-11-07 | 宜宾长盈精密技术有限公司 | Pole assembling device and pole assembling jig |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023241603A1 (en) | 2023-12-21 |
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