CN114927812A - Cladding formula structure and battery top cap subassembly of battery top cap - Google Patents
Cladding formula structure and battery top cap subassembly of battery top cap Download PDFInfo
- Publication number
- CN114927812A CN114927812A CN202210664651.5A CN202210664651A CN114927812A CN 114927812 A CN114927812 A CN 114927812A CN 202210664651 A CN202210664651 A CN 202210664651A CN 114927812 A CN114927812 A CN 114927812A
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- Prior art keywords
- pole
- top cover
- battery top
- sealing
- post
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- 238000005253 cladding Methods 0.000 title claims abstract description 29
- 238000007789 sealing Methods 0.000 claims abstract description 95
- 239000004033 plastic Substances 0.000 claims abstract description 55
- 229920003023 plastic Polymers 0.000 claims abstract description 55
- 238000009434 installation Methods 0.000 claims description 10
- 239000011810 insulating material Substances 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 238000002955 isolation Methods 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 18
- 239000000956 alloy Substances 0.000 description 15
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 description 12
- 238000000465 moulding Methods 0.000 description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 238000001746 injection moulding Methods 0.000 description 5
- 238000010030 laminating Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- 239000004411 aluminium Substances 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 230000003993 interaction Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000010073 coating (rubber) Methods 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000009918 complex formation Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 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
- 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
- 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
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/588—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries outside the batteries, e.g. incorrect connections of terminals or busbars
-
- 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
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a cladding structure of a battery top cover, which comprises a pole and a pole hole arranged on the battery top cover, wherein the pole is positioned above the pole hole, a first positioning part surrounding a fixing part of the pole is formed on the pole hole, a limiting part surrounding an electric connection part of the pole is arranged on the first positioning part, and an inner cavity for limiting the fixing part of the pole is formed between the limiting part and the first positioning part; a sealing element is arranged in the inner cavity; a first sealing part positioned between the fixing part and the limiting part of the pole is formed on the sealing element, and a gap is formed between the limiting part and the electric connection part of the pole; a second positioning piece is formed on the pole column hole along the circumferential direction of the pole column hole, and a second sealing part positioned between the fixing part of the pole column and the second positioning piece is formed on the sealing piece; the first positioning piece is covered with a first plastic piece. The pole and the sealing element are matched more tightly, the sealing performance between the pole and the pole hole is improved, and the structural stability is better; and the assembly is simple and convenient, and the assembly efficiency is improved.
Description
Technical Field
The invention relates to the technical field of battery top covers, in particular to a cladding type structure of a battery top cover and a battery top cover assembly.
Background
The power battery is an important component of the new energy vehicle, and the existing new energy battery mostly adopts a lithium ion battery as the power battery. For a power lithium battery, besides the key components such as the battery cell and the BMS, the battery case structure is also an important factor for the safety of the power lithium battery. Wherein, the pole is the component of the battery module, the installation of the general pole on the top cover of the battery module is welded at the lower opening edge of the pole hole through the metal ring, then the sealing element is fixed at the lower end part of the pole, and the insulating effect between the pole and the top cover is achieved, however, the tight fit between the sealing element and the pole and the top cover is poor only through the metal ring welding, which results in poor sealing performance, poor stability of the battery module, potential safety hazard, poor structural strength, and deformation caused by thermal expansion and contraction during the welding process, which makes the assembly difficult, in addition, like the patent document of the assembly structure of the top cover plate and the pole of the power battery with the publication number of CN106505163B in China, the number of structural components is large, and the assembly process is complex, which causes the production efficiency to be unable to meet the requirements, and the assembly difficulty is greater.
Disclosure of Invention
In order to solve at least one technical defect, the invention provides the following technical scheme:
the coating structure of the battery top cover is characterized in that a first positioning piece is formed on an upper opening of the pole column hole along the circumferential direction and is arranged around a fixing part of the pole column, a limiting part surrounding an electric connection part of the pole column is arranged on the first positioning piece, and an inner cavity used for limiting the fixing part of the pole column is formed between the limiting part and the first positioning piece; a sealing element is arranged in the inner cavity and is positioned between the first positioning element and the fixing part of the pole; a first sealing part positioned between the fixing part and the limiting part of the pole is formed on the sealing element, and a gap is formed between the limiting part and the electric connection part of the pole;
a second positioning piece is formed on the pole column hole along the circumferential direction of the pole column hole, and a second sealing part positioned between the fixing part of the pole column and the second positioning piece is formed on the sealing piece;
the pole post is characterized by further comprising a first plastic part, wherein the first plastic part comprises a covering part covering the limiting part, and a first connecting part and an isolating part which are formed on the covering part;
the sealing element and the first plastic part are both made of insulating materials.
According to the cladding structure of the battery top cover, the first plastic part further comprises a cladding part formed on the edge of the covering part, and the cladding part is arranged around the first positioning part and wraps the first positioning part.
According to the cladding structure of the battery top cover, the second positioning piece comprises the bulges which are formed by riveting and bending and are arranged along the circumferential continuity of the pole column hole or the bulges arranged at intervals, and the bulges extrude the second sealing part so that the first sealing part is extruded by the interaction of the positioning part and the fixing part of the pole column to be arranged between the positioning part and the fixing part of the pole column and between the bulges and the fixing part of the pole column in a sealing way.
According to the cladding structure of the battery top cover, the fixing part of the pole is provided with the positioning groove, and the second sealing part is positioned in the positioning groove.
According to the cladding type structure of the battery top cover, the battery top cover further comprises a second plastic part connected to the battery top cover, the second plastic part is provided with a jacking portion and a through hole located below the pole column hole, and the jacking portion penetrates through the pole column hole and then abuts against the second sealing portion.
According to the cladding type structure of the battery top cover, the battery top cover further comprises a conductive connecting piece, the conductive connecting piece comprises a convex portion and a fitting portion formed at the edge of the convex portion, the convex portion is fixed with the fixing portion of the pole after being inserted into the through hole, and the fitting portion is fitted to the lower surface of the second plastic piece.
According to the above-mentioned cladding formula structure of battery top cap, first connecting portion include the spliced pole, the second connecting portion include with spliced pole complex spread groove, spread groove and spliced pole clamping connection.
According to the cladding structure of the battery top cover, the limiting part is provided with the first clamping part, the clamping cavity is formed between the first clamping part and the first sealing part, the isolating part is provided with the second clamping part, and the second clamping part is clamped in the clamping cavity.
According to the cladding structure of the battery top cover, the second plastic part is connected with the battery top cover in a buckling mode, the second plastic part is provided with a clamping portion, and the clamping portion is clamped in an inner concave formed by forming a protrusion on the battery top cover through riveting and pressing.
A battery top cover assembly comprises a battery top cover, and a positive pole column and a negative pole column which are arranged on the battery top cover; the positive pole column or the negative pole column comprises the cladding structure of the battery top cover;
the positive electrode pole and the negative electrode pole are arranged on the same battery top cover to form an integrated top cover assembly, or are respectively arranged on different battery top covers to form a split type top cover assembly.
Compared with the prior art, the invention has the following beneficial effects:
1. utilize the first sealing of sealing member and second sealing to carry out the fixed part of cladding utmost point post, then arrange the fixed part of utmost point post in the intracavity between first locating part and the spacing portion, at this moment through first locating part extrusion second sealing and make first sealing obtain the extrusion with between the fixed part to spacing portion and utmost point post by the fixed part interact of spacing portion and utmost point post, and set up between the fixed part of arch and utmost point post sealedly, it is inseparabler to reach the cooperation between utmost point post and the sealing member, promote the sealing performance between utmost point post and the utmost point post hole, and the steadiness of structure is better.
2. The second plastic part is connected with the battery top cover through the buckle, so that the second plastic part can be directly installed, the hot melting process is removed, the assembly is simple and convenient, and the assembly efficiency is improved.
3. The first piece of moulding can be directly carry out integrative injection moulding rubber coating shaping with first locating piece, perhaps adopts the first piece of moulding in advance to the first piece of moulding in advance or the first piece of moulding in advance of moulding in rubber coating shaping are connected fixedly with the spacing portion of first locating piece through the mounting means of clamping connection, make the installation back dismantle convenient, so that retrieve, reach green's purpose.
4. Utmost point post simple installation, and reduce the assembly degree of difficulty to product non-deformable when utmost point post is installed on the battery top cap makes the assembly efficiency of moulding plastics promote more than 50%.
Drawings
FIG. 1 is a schematic view of a clad structure (I);
FIG. 2 is a schematic view (two) of the clad structure;
FIG. 3 is a schematic structural view of the unitary cap assembly;
FIG. 4 is an exploded view of the unitary header assembly;
FIG. 5 is an exploded view of the unitary top cap assembly (II);
fig. 6 is a schematic view illustrating a structure in which the split type cap assembly is mounted to both ends of the battery case.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived from the embodiments of the present invention by a person skilled in the art, are within the scope of the present invention.
A cladding type structure of a battery top cover 4 comprises a pole 1 and a pole mounting position arranged on the battery top cover 4, wherein a pole hole 40 is formed in the pole mounting position, the pole 1 is positioned above the pole hole 40, a first positioning piece 41 is formed on the upper opening of the pole hole 40 along the circumferential direction, the first positioning piece 41 is arranged around a fixing part 11 of the pole 1, a limiting part 411 or a plurality of limiting parts 411 arranged at intervals is arranged on the first positioning piece 41 and continuously arranged around an electric connection part 12 of the pole 1, and an inner cavity 42 used for limiting the fixing part 11 of the pole 1 is formed between the limiting part 411 and the first positioning piece 41; the sealing element 2 is arranged in the inner cavity 42 and is positioned between the first positioning element 41 and the fixing part 11 of the pole 1; a first sealing part 21 positioned between the fixing part 11 and the limiting part 411 of the pole 1 is formed on the sealing element 2 so as to seal the fixing part 11 and the limiting part 411 of the pole 1, and a gap is formed between the limiting part 411 and the electric connection part 12 of the pole 1; wherein the sealing element 2 is made of rubber material.
Wherein the post 11 can have two kinds of materials, be copper aluminum alloy material and aluminum alloy material respectively, and the post 1 of general copper aluminum alloy material is as negative pole post 102, and the aluminum alloy material is as anodal post 101, and copper aluminum alloy material is the first aluminium billet, and the latter half is the copper billet, then copper billet and aluminium billet complex form the copper aluminum alloy.
The second positioning piece 43 is formed on the pole column hole 40 along the circumferential direction thereof, the second sealing part 22 between the fixing part 11 of the pole column 1 and the second positioning piece 43 is formed on the sealing member 2, so as to seal between the fixing part 11 of the pole column 1 and the second positioning piece 43, and the first sealing part 21 and the second sealing part 22 are extruded under the action of the second positioning piece 43, so that the sealing performance is improved, and the battery top cover 4 is used more safely and reliably.
The pole piece comprises a first plastic part 5, wherein the first plastic part 5 comprises a covering part 51 covering the limiting part 411, a first connecting part 532 and an isolating part 53, the first connecting part 532 and the isolating part 53 are formed on the covering part 51, the isolating part 53 is arranged in the interval, the limiting part 411 is provided with a second connecting part 412, the first connecting part 532 is connected with the second connecting part 412 in a matched mode, and the connecting part of the pole 1 penetrates through the covering part 51; the sealing element 2 and the first plastic part 5 are both made of insulating materials. Its setting makes to carry out insulation protection to spacing portion 411, because first locating part 41 is made by metal conducting material to spacing portion 411 is bent by first locating part 41 and is formed, and isolation portion 53 makes spacing portion 411 and utmost point post 1's electric connection portion 12 keep apart insulatedly, makes the battery use safe and reliable, and covering portion 51 covers first locating part 41 top comprehensively.
Preferably, the first plastic part 5 further comprises a covering part 52 formed at the edge of the covering part 51, the covering part 52 is arranged around the first positioning part 41 and covers the first positioning part 41, the arrangement of the covering part 52 is used for carrying out comprehensive insulation protection on the first positioning part 41, so that a safety accident caused by a battery due to the fact that the electric connecting part is in contact with the first positioning part 41 after the pole 1 is electrically connected is avoided, and the safety performance is improved, wherein the first plastic part 5 can be integrally molded on the first positioning part 41 by encapsulation in an injection molding mode, or the molded first plastic part 5 is installed on the first positioning part 41.
Preferably, the second positioning member 43 includes a plurality of protrusions 431 that are riveted and bent to form protrusions 431 or protrusions 431 arranged at intervals and arranged continuously along the circumferential direction of the pole post hole 40, wherein the protrusions 431 are riveted and bent at 90 ° to make the vertical second sealing portion 22 in a horizontal state, and the horizontal second sealing portion 22 is pressed, so that the first sealing portion 21 is pressed by the interaction between the positioning portion 411 and the fixing portion 11 of the pole post 1, and the protrusions 431 and the fixing portion 11 of the pole post 1 are tightly sealed.
In the aforesaid, the rubber seal circle is as sealing member 2, the last sealed bulge loop of rubber seal circle upper port is as first sealing 21, consequently, sealing member 2 overlaps on the fixed part 11 of utmost point post 1, and first sealing 21 laminates on the fixed part 11 of utmost point post 1, then arrange the fixed part 11 of utmost point post 1 in inner chamber 42, and electric connection 12 of utmost point post 1 passes spacing portion 411 and encircles the hole that sets up and form, and spacing portion 411 of first sealing 21 laminating, then utilize the riveting head to carry out the riveting to turn over 45 to the arch 431 of vertical state, reuse the riveting punch with 45 protruding 431 that turn over to 90 horizontal state, its convenient assembling, and utmost point post 1 installation back, the leakproofness is relatively poor between utmost point post 1 and the top cap, and stable in structure.
Preferably, the fixing portion 11 of the pole 1 is formed with a positioning groove 111, the second sealing portion 22 is positioned in the positioning groove 111, the arrangement is such that the bottom surface of the second sealing portion 22 is flush with the bottom surface of the fixing portion 11 of the pole 1, and the second sealing portion 22 can be effectively positioned, so that the structural stability is improved.
Preferably, the battery further comprises a second plastic part 6 connected to the battery top cover 4, the second plastic part 6 is provided with a pressing part and a through hole located below the pole post hole 40, the pressing part penetrates through the pole post hole 40 and then abuts against the second sealing part 22, and the pressing part is arranged to further position the second sealing part 22 and improve sealing performance.
Preferably, still include electrically conductive connecting piece, electrically conductive connecting piece includes the convex part and forms in the laminating portion at the convex part edge, and the convex part inserts fixed 11 with the fixed part of utmost point post 1 behind the through-hole, and laminating portion laminates in the second and moulds the lower surface of 6, and its structure setting is moulded the second and is further supported fixedly 6 to utmost point post 1 links to each other through the electric core in electrically conductive connecting piece and the battery.
As preferred, first connecting portion 532 includes the spliced pole, second connecting portion 412 include with spliced pole complex spread groove, the spread groove is connected with the spliced pole screens, be provided with protruding knot in order to form the extension type post on the spliced pole, be provided with the screens groove in order to form the extension type groove on the inner wall of spread groove, and the extension type post corresponds the card and goes into the extension type inslot, in order to carry out the screens connection, its screens connection makes the first 5 installation after of moulding dismantle conveniently, can carry out recycle, green.
Preferably, a first clamping portion 413 is formed on the limiting portion 411, a clamping cavity 414 is formed between the first clamping portion 413 and the first sealing portion 21, a second clamping portion is formed on the separating portion 53, and the second clamping portion is clamped in the clamping cavity 414, so that the first plastic part 5 is coated on the first positioning part 41 and integrally injection-molded, the second clamping portion can be clamped in the clamping cavity 414 to fix the first plastic part 5, and the fixing stability of the first plastic part 5 is further improved.
Preferably, the second plastic part 6 is connected with the battery top cover 4 in a buckling mode, a clamping portion is arranged on the second plastic part 6 and is clamped in an inner concave portion formed by the fact that the battery top cover 4 is riveted to form a protrusion 431, the second plastic part 6 is located on the battery top cover 4 through the structure, a T-shaped column 63 is arranged on the second plastic part 6, a T-shaped groove 45 is formed in the battery top cover 4, and the T-shaped column 63 is matched with the T-shaped groove 45 to be connected in a buckling mode.
The first embodiment is as follows:
as shown in fig. 1 and 4, the power battery described in this embodiment includes a battery housing and a battery top cover 4 fitted to a port of the battery housing. Wherein, the positive negative pole of battery is located the both ends of same battery top cap 4 respectively to constitute and have integral type battery top cap 4 subassembly. Namely, be equipped with anodal utmost point post 101, negative pole post 102 and explosion-proof valve plate 8 on battery top cap 4, explosion-proof valve plate 8 sets up in the explosion-proof valve opening 46 at battery top cap 4 middle part, and wherein explosion-proof valve plate 8 can be the integral type structure with battery top cap 4, also can be the split type structure of explosion-proof valve plate 8 in explosion-proof valve opening 46 through welded fastening. Wherein the post 1 can have two kinds of materials, be copper aluminum alloy material and aluminum alloy material respectively, and the post 1 of general copper aluminum alloy material is as negative pole post 102, and the aluminum alloy material is as anodal post 101, and copper aluminum alloy material is the first half 13 and is the aluminium pig, and the latter half 14 is the copper pig, then copper pig and aluminium pig complex formation copper aluminum alloy.
In this embodiment, the positive electrode terminal 101 and the negative electrode terminal 102 are disposed on the battery top cap 4 through the coating structure when the terminals 1 are mounted.
As shown in fig. 2, 3, 5, and 6, the cladding structure of the battery top cover 4 described in this embodiment includes a post 1 and a post mounting position disposed on the battery top cover 4, the post mounting position is provided with a post hole 40, the post 1 is located above the post hole 40, an upper opening of the post hole 40 is circumferentially formed with a first positioning member 41, the first positioning member 41 is disposed around the fixing portion 11 of the post 1 to form a positioning ring structure, the first positioning member 41 is provided with a limiting portion 411 disposed continuously around the electrical connection portion 12 of the post 1 or a plurality of limiting portions 411 disposed at intervals, and an inner cavity 42 for limiting the fixing portion 11 of the post 1 is formed between the limiting portion 411 and the first positioning member 41; the sealing element 2 is arranged in the inner cavity 42 and is positioned between the first positioning element 41 and the fixing part 11 of the pole 1; a first sealing part 21 positioned between the fixing part 11 and the limiting part 411 of the pole 1 is formed on the sealing element 2 so as to seal the fixing part 11 and the limiting part 411 of the pole 1, and a gap is formed between the limiting part 411 and the electric connection part 12 of the pole 1; wherein sealing member 2 is made by the rubber material, can select first locating piece 41 to be square ring structure or circular ring structure according to the reality, and circular or square is all selected according to actual conditions to utmost point post 1, utmost point post hole 40, sealing member 2.
The second positioning piece 43 is formed on the pole column hole 40 along the circumferential direction thereof, the second sealing part 22 between the fixing part 11 of the pole column 1 and the second positioning piece 43 is formed on the sealing member 2, so as to seal between the fixing part 11 of the pole column 1 and the second positioning piece 43, and the first sealing part 21 and the second sealing part 22 are extruded under the action of the second positioning piece 43, so that the sealing performance is improved, and the battery top cover 4 is used more safely and reliably.
The pole piece comprises a first plastic part 5, wherein the first plastic part 5 comprises a covering part 51 covering the limiting part 411, a first connecting part 532 and an isolating part 53, the first connecting part 532 and the isolating part 53 are formed on the covering part 51, the isolating part 53 is arranged in the interval, the limiting part 411 is provided with a second connecting part 412, the first connecting part 532 is connected with the second connecting part 412 in a matched mode, and the connecting part of the pole 1 penetrates through the covering part 51; the sealing element 2 and the first plastic part 5 are both made of insulating materials. It sets up makes to carry out insulation protection to spacing portion 411, because first locating part 41 is made by metal conducting material to spacing portion 411 is bent by first locating part 41 and is formed, and isolation portion 53 makes spacing portion 411 and utmost point post 1's electric connection portion 12 keep apart insulatedly, makes the battery use safe and reliable, and covering portion 51 covers first locating part 41 top comprehensively.
The first piece 5 of moulding still includes the cladding 52 that forms in covering part 51 edge, cladding 52 sets up around first locating part 41, and cladding first locating part 41, its setting makes and carries out comprehensive insulation protection to first locating part 41, avoid utmost point post 1 electricity connection back electric connector and the contact of first locating part 41 and lead to the battery to cause the incident, promote the security performance, wherein the first piece 5 of moulding can be the integrative injection moulding of rubber coating on first locating part 41, or will moulded first piece 5 of moulding install on first locating part 41.
The second positioning element 43 includes a protrusion 431 formed by riveting and bending along the circumferential direction of the pole hole 40 or a plurality of protrusions 431 arranged at intervals, wherein the protrusion 431 is bent by 90 ° through riveting and bending to make the vertical second sealing portion 22 in a horizontal state, and to squeeze the horizontal second sealing portion 22, so that the first sealing portion 21 is squeezed by the interaction between the positioning portion 411 and the fixing portion 11 of the pole 1, so as to achieve tight sealing between the positioning portion 411 and the fixing portion 11 of the pole 1, and between the protrusion 431 and the fixing portion 11 of the pole 1.
In the above, the rubber packing is used as the packing 2, and the upper seal convex ring at the upper end of the rubber packing is used as the first seal portion 21.
During assembly, the sealing element 2 is sleeved on the fixing part 11 of the pole 1, the first sealing part 21 is attached to the fixing part 11 of the pole 1, then the fixing part 11 of the pole 1 is arranged in the inner cavity 42, the electric connection part 12 of the pole 1 penetrates through a hole formed by the limiting part 411 in a surrounding mode, and the sealing convex ring is attached to the limiting part 411, at the moment, the battery top cover 4 provided with the pole 1 is arranged in a stamping die, the vertical protrusion 431 is subjected to riveting and pressing by a riveting head of the stamping die and is turned inwards to form the inclined protrusion 431 with an angle of 45 degrees, the 45-degree turned protrusion 431 is turned to be in a transverse state by the riveting head, the vertical second sealing part 22 is made to be in a transverse state to be closely attached to the lower side face of the fixing part 11 of the pole 1, the transverse second sealing part 22 is squeezed, and the first sealing part 21 is also squeezed by interaction between the limiting part 411 and the fixing part 11 of the pole 1, so as to achieve the tight sealing between the limiting part 411 and the fixing part 11 of the pole 1 and between the protrusion 431 and the fixing part 11 of the pole 1, and then place the top cover fixed with the pole 1 by riveting in an injection mold, so as to encapsulate the first plastic part 5 on the first positioning part 41 by injection molding, or directly assemble the first plastic part 5 to the first positioning part 41.
Preferably, the fixing portion 11 of the pole 1 is formed with a positioning groove 111, the second sealing portion 22 is positioned in the positioning groove 111, the arrangement thereof is such that the bottom surface of the second sealing portion 22 is flush with the bottom surface of the fixing portion 11 of the pole 1, and the second sealing portion 22 can be effectively positioned, so that the structural stability is improved.
Preferably, still include the second of connecting on battery top cap 4 and mould 6, second moulds 6 and is provided with top splenium and the through-hole that is located the post hole 40 below, and the top splenium runs through post hole 40 back conflict second sealing 22, and its setting is further positioned second sealing 22, promotes sealed ability.
Preferably, still include electrically conductive connecting piece, electrically conductive connecting piece includes the convex part and forms in the laminating portion at convex part edge, and the convex part inserts fixed 11 with the fixed part of utmost point post 1 behind the through-hole, and laminating portion laminates in the second and moulds the lower surface of 6, and its structure setting is moulded 6 to the second and is further supported fixedly to utmost point post 1 links to each other through the electric core in electrically conductive connecting piece and the battery.
Preferably, first connecting portion 532 includes the spliced pole, second connecting portion 412 include with spliced pole complex spread groove, the spread groove is connected with the spliced pole screens, be provided with protruding knot on the spliced pole with the type post of the linking that the formation is layered, be provided with the screens groove on the inner wall of spread groove in order to form the linking groove, and the type post of linking the course corresponds the card and goes into the linking groove of linking the course, in order to carry out the screens and connect, its screens is connected and is makeed the first 5 installation after-dismantlements of piece of moulding conveniently, can carry out recycle, green.
Preferably, the limiting portion 411 is formed with a first clamping portion 413, a clamping cavity 414 is formed between the first clamping portion 413 and the first sealing portion 21, a second clamping portion is formed on the separating portion 53, and the second clamping portion is clamped in the clamping cavity 414, so that the first plastic part 5 is coated on the first positioning part 41 by injection molding, and the second clamping portion can be clamped in the clamping cavity 414 to fix the first plastic part 5, thereby further improving the fixing stability of the first plastic part 5.
Preferably, the second plastic part 6 is connected with the battery top cover 4 in a buckling mode, a clamping portion is arranged on the second plastic part 6 and is positioned in an inner concave portion formed by the fact that the battery top cover 4 is riveted to form a protrusion 431, the second plastic part 6 is positioned on the battery top cover 4 through the structure, a T-shaped column 63 is arranged on the second plastic part 6, a T-shaped groove 45 is formed in the battery top cover 4, the T-shaped column 63 is matched with the T-shaped groove 45 to be connected in a buckling mode, the second plastic part 6 covers the lower side face of the battery top cover 4 completely, and through holes in two ends of the second plastic part 6 correspond to the positions of the pole post hole 40 in the negative pole 1 position and the pole post hole 40 in the positive pole 1 position respectively.
Example two:
as shown in fig. 6, the power battery described in this embodiment includes a battery case 100 and a battery top cover 4 respectively fitted to two ports of the battery case. The positive and negative poles of the battery are respectively positioned on different battery top covers 4 to form a split type battery top cover 4 assembly. Namely, a positive pole post 101 is arranged on one battery top cover 4, a negative pole post 102 is arranged on the other battery top cover 4, an explosion-proof valve plate 8 is arranged on the battery top cover 4 with the positive pole post 101 or the battery top cover 4 with the negative pole post 102, and the explosion-proof valve plate 8 is arranged in an explosion-proof valve hole 46 in the middle of the battery top cover 4; when the explosion-proof valve plate 8 is arranged on the battery top cover 4 with the positive pole post 101, the explosion-proof valve plate 8 and the battery top cover 4 can be of an integrated structure or fixed on the battery top cover 4 through welding; when the explosion-proof valve plate 8 on the battery top cover 4 that has negative terminal 102, the explosion-proof valve plate 8 can be the integral type structure with battery top cover 4, perhaps through the split type structure of welded fastening in explosion-proof valve opening 46, can be according to the actual first locating part 41 of selection for square ring structure or circular ring structure, and circular or square is all selected according to actual conditions to utmost point post 1, utmost point post hole 40, sealing member 2.
In this embodiment, the coating structure when the positive electrode post 101 and the negative electrode post 102 are both installed through the post 1 is respectively disposed on different battery top covers 4, wherein, the post 1 installation structure of the post 1 on the battery top cover 4 is identical to the post 1 installation structure of the first embodiment, so detailed description is not repeated here, but the second plastic part 6 is different from the first embodiment, the second plastic part 6 in this embodiment is a split structure, and the bottom surface of the battery top cover 4 at the two ports of the battery shell is provided with the second plastic part 6.
The post 1 can be made of two materials, namely a copper-aluminum alloy material and an aluminum alloy material, the post 1 made of a general copper-aluminum alloy material is used as a negative electrode post 102, the aluminum alloy material is used as a positive electrode post 101, and the sealing ring is made of an insulating material; the copper-aluminum alloy material is that the upper half part is an aluminum block, the lower half part is a copper block, and then the copper block and the aluminum block are compounded to form the copper-aluminum alloy.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (10)
1. The utility model provides a cladding formula structure of battery top cap, including utmost point post (1), and set up utmost point post installation position on battery top cap (4), utmost point post installation position department is equipped with utmost point post hole (40), utmost point post (1) is located utmost point post hole (40) top, a serial communication port, the last mouth of utmost point post hole (40) is formed with first locating piece (41) along circumference, and first locating piece (41) set up around fixed part (11) ground of utmost point post (1), be equipped with spacing portion (411) or a plurality of spacing portions (411) that the interval set up around electric connection portion (12) of utmost point post (1) sets up in succession on first locating piece (41), form inner chamber (42) that are used for fixed part (11) of spacing utmost point post (1) between spacing portion (411) and first locating piece (41); a sealing element (2) is arranged in the inner cavity (42) and is positioned between the first positioning element (41) and the fixing part (11) of the pole (1); a first sealing part (21) positioned between the fixing part (11) and the limiting part (411) of the pole (1) is formed on the sealing element (2), and a distance exists between the limiting part (411) and the electric connection part (12) of the pole (1);
a second positioning piece (43) is formed on the pole column hole (40) along the circumferential direction of the pole column hole, and a second sealing part (22) positioned between the fixing part (11) of the pole column (1) and the second positioning piece (43) is formed on the sealing piece (2);
the electric pole fixing device is characterized by further comprising a first plastic part (5), wherein the first plastic part (5) comprises an isolation part (53), and the isolation part (53) is arranged in the interval to enable the spacing part (411) and the electric connection part (12) of the pole (1) to be isolated and insulated;
the second positioning piece (43) comprises a bulge (431) which is formed by riveting and bending and is continuously arranged along the circumferential direction of the pole hole (40) or a plurality of bulges (431) which are arranged at intervals, and the bulge (431), the fixing part (11) of the pole (1) and the limiting part (411) mutually act to press the sealing piece (2) so that the limiting part (411) and the fixing part (11) of the pole (1) and the bulge (431) and the fixing part (11) of the pole (1) are arranged in a sealing way;
the sealing element (2) is made of insulating material.
2. The cladding structure of the battery top cover according to claim 1, wherein: the first plastic part (5) further comprises a covering part formed on the isolation part and a first connecting part (532) formed on the covering part (51), the covering part covers the top of the first positioning part, the limiting part (411) is provided with a second connecting part (412), the first connecting part (532) is connected with the second connecting part (412) in a matched mode, and the connecting part of the pole (1) penetrates through the covering part (51); the first plastic part (5) is made of insulating materials.
3. The cladding structure of the battery top cover according to claim 2, wherein: the first plastic part (5) further comprises a coating part (52) formed on the edge of the covering part (51), and the coating part (52) is arranged around the first positioning part (41) and coats the first positioning part (41).
4. The cladding structure of the battery top cover as claimed in claim 3, wherein: a positioning groove (111) is formed in the fixing portion (11) of the pole (1), and the second sealing portion (22) is positioned in the positioning groove (111).
5. The cladding structure of the battery top cover as claimed in claim 4, wherein: the battery pole post structure is characterized by further comprising a second plastic part (6) connected to the battery top cover (4), wherein the second plastic part (6) is provided with a jacking portion and a through hole located below the pole post hole (40), and the jacking portion penetrates through the pole post hole (40) and then abuts against the second sealing portion (22).
6. The cladding structure of the battery top cover according to claim 5, wherein: the conductive connecting piece comprises a convex portion and a fitting portion formed at the edge of the convex portion, the convex portion is inserted into the through hole and then fixed with the fixing portion (11) of the pole column (1), and the fitting portion is fitted to the lower surface of the second plastic part (6).
7. The sheathing structure of a battery top cover (4) according to claim 2 or 3, characterized in that: first connecting portion (532) include the spliced pole, second connecting portion (412) including with spliced pole complex spread groove, spread groove and spliced pole clamping connection.
8. The sheathing structure of a battery top cap according to claim 1, 2 or 3, wherein: a first clamping portion (413) is formed on the limiting portion (411), a clamping cavity (414) is formed between the first clamping portion (413) and the first sealing portion (21), a second clamping portion is formed on the isolating portion (53), and the second clamping portion is clamped in the clamping cavity (414).
9. The cladding structure of the battery top cover according to claim 4, wherein: the second plastic part (6) is connected with the battery top cover (4) in a buckling mode, a clamping portion is arranged on the second plastic part (6), and the clamping portion is clamped in an inner concave formed by forming a protrusion (431) on the battery top cover (4) through riveting.
10. A battery top cover assembly comprises a battery top cover (4), and a positive pole post (101) and a negative pole post (102) which are arranged on the battery top cover (4); characterized in that the positive electrode post (101) or the negative electrode post (102) comprises a cladding structure of the battery top cover (4) according to any one of claims 1 to 9;
the positive pole column (101) and the negative pole column (102) are arranged on the same battery top cover (4) to form an integrated top cover assembly, or are respectively arranged on different battery top covers (4) to form a split type top cover assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210664651.5A CN114927812A (en) | 2022-06-13 | 2022-06-13 | Cladding formula structure and battery top cap subassembly of battery top cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210664651.5A CN114927812A (en) | 2022-06-13 | 2022-06-13 | Cladding formula structure and battery top cap subassembly of battery top cap |
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| Publication Number | Publication Date |
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| CN114927812A true CN114927812A (en) | 2022-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210664651.5A Withdrawn CN114927812A (en) | 2022-06-13 | 2022-06-13 | Cladding formula structure and battery top cap subassembly of battery top cap |
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| CN (1) | CN114927812A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115472972A (en) * | 2022-09-02 | 2022-12-13 | 武汉富航精密工业有限公司 | Top cover assembly of secondary battery, secondary battery and processing method |
| CN116014317A (en) * | 2023-02-09 | 2023-04-25 | 深圳海润新能源科技有限公司 | End cover assembly, energy storage device and electric equipment |
| CN116995343A (en) * | 2023-07-05 | 2023-11-03 | 深圳市长盈精密技术股份有限公司 | Battery top cover and power battery |
-
2022
- 2022-06-13 CN CN202210664651.5A patent/CN114927812A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115472972A (en) * | 2022-09-02 | 2022-12-13 | 武汉富航精密工业有限公司 | Top cover assembly of secondary battery, secondary battery and processing method |
| CN115472972B (en) * | 2022-09-02 | 2023-12-29 | 武汉富航精密工业有限公司 | Top cover assembly of secondary battery, secondary battery and processing method |
| CN116014317A (en) * | 2023-02-09 | 2023-04-25 | 深圳海润新能源科技有限公司 | End cover assembly, energy storage device and electric equipment |
| US12046762B1 (en) | 2023-02-09 | 2024-07-23 | Shenzhen Hithium Energy Storage Technology Co., Ltd. | End cover assembly, energy-storage device, and electricity-consumption device |
| EP4415154A1 (en) * | 2023-02-09 | 2024-08-14 | Shenzhen Hithium Energy Storage Technology Co., Ltd. | End cover assembly, energy-storage device, and electricity-consumption device |
| CN116995343A (en) * | 2023-07-05 | 2023-11-03 | 深圳市长盈精密技术股份有限公司 | Battery top cover and power battery |
| CN116995343B (en) * | 2023-07-05 | 2024-09-06 | 深圳市长盈精密技术股份有限公司 | Battery top cover and power battery |
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Effective date of registration: 20230407 Address after: Room 208, No. 51 West Road, Biqiao Town, Liyang City, Changzhou City, Jiangsu Province, 213300 Applicant after: Changzhou Zhenyu New Energy Technology Co.,Ltd. Address before: 315000 Jingang venture base, No.5, Jinhai East Road, Binhai New Area, southern Ningbo, Ninghai County, Ningbo City, Zhejiang Province Applicant before: Ningbo Zhenyu Auto Parts Co.,Ltd. |
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