CN217691396U - 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
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- CN217691396U CN217691396U CN202221486661.6U CN202221486661U CN217691396U CN 217691396 U CN217691396 U CN 217691396U CN 202221486661 U CN202221486661 U CN 202221486661U CN 217691396 U CN217691396 U CN 217691396U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model discloses a cladding type structure of a battery top cover, which comprises a pole column and a pole column hole arranged on the battery top cover, wherein the pole column is positioned above the pole column hole, a first positioning piece surrounding the fixing part of the pole column is formed on the pole column hole, a limiting part surrounding the 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; 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 utility model relates to a technical field of battery top cap, concretely relates to cladding formula structure and battery top cap subassembly of battery top cap.
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 core and the BMS, the structure of the battery shell is also an important factor for the safety of the power lithium battery. Wherein, utmost point post is the component part of battery module, the installation of general utmost point post on the top cap of battery module is along department at utmost point post hole end opening through the becket welding, then make the sealing member obtain fixedly at the lower tip of utmost point post, and play utmost point post and the insulating effect of top cap, however only weld through the becket, make the sealing member respectively with utmost point post and top cap between the tight fit degree relatively poor, lead to the leakproofness poor, make the stability in use of battery module poor, there is the potential safety hazard, and structural strength is also relatively poor, and the influence of expend with heat and contract with cold takes place to warp easily in welding process, make the assembly degree of difficulty great, in addition, again like the patent literature of the assembly structure of a power battery top cover plate and utmost point post that chinese patent announced is CN106505163B, its structure spare part quantity is more, and assembly process is complicated, cause production efficiency can not meet the demands, and the assembly degree of difficulty is great.
SUMMERY OF THE UTILITY MODEL
In order to solve at least one technical defect, the utility model provides a 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 in a turnover mode 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 a plurality of bulges which are riveted, bent and formed into bulges arranged along the circumferential continuity of the pole hole or arranged at intervals, and the bulges extrude the second sealing part to enable the first sealing part to be extruded by the interaction of the positioning part and the fixing part of the pole so as to be hermetically arranged between the limiting part and the fixing part of the pole and between the bulges and the fixing part of the pole.
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 part.
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 electrode pole or the negative electrode pole comprises the coating structure of the battery top cover;
the positive pole column and the negative pole column 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 beneficial effects of the utility model are that:
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, extrude the second sealing through first locating part this moment 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 sealedly between the fixed part of arch and utmost point post, 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, a hot melting process is eliminated, 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. The pole is simple and convenient to mount, the assembly difficulty is reduced, and the pole is not easy to deform when being mounted on the battery top cover, so that the injection molding assembly efficiency is improved by more than 50%.
Drawings
FIG. 1 is a schematic view of a clad structure (I);
FIG. 2 is a schematic view of a cladding structure;
FIG. 3 is a schematic structural view of the one-piece lid 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 structural view illustrating that the split type top cap assembly is mounted at both ends of the battery case.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.
A coated 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 part 41 is formed on the upper opening of the pole hole 40 along the circumferential direction, the first positioning part 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 are arranged on the first positioning part 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 part 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 exists 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 pole column hole 40 is formed with a second positioning piece 43 along the circumferential direction thereof in a folding manner, the sealing piece 2 is formed with a second sealing part 22 located between the fixing part 11 of the pole column 1 and the second positioning piece 43 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 safer and more reliable to use.
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.
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 formed by caulking and bending to form protrusions 431 continuously arranged along the circumferential direction of the pole hole 40 or a plurality of protrusions 431 arranged at intervals, wherein the protrusions 431 are bent by caulking and bending at 90 ° to make the vertical second sealing part 22 in a horizontal state, and the second sealing part 22 in the horizontal state is pressed, so that the first sealing part 21 is pressed by the interaction between the positioning part 411 and the fixing part 11 of the pole 1, and the protrusions 431 and the fixing part 11 of the pole 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 top cover 4 of the battery, the second plastic part 6 is provided with a pressing part and a through hole positioned below the pole column hole 40, the pressing part penetrates through the pole column 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 so as to improve the 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 with the fixed part 11 of utmost point post 1 after 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 electrically conductive connecting piece and the electric core in 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 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 of moulding piece dismantle the convenience, 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 isolating 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 formed by forming a protrusion 431 on the battery top cover 4 through riveting, 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, 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 and negative poles of the battery are respectively positioned at two ends of the same battery top cover 4 so as to form an integrated battery top cover 4 assembly. 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 post 101 and the negative electrode post 102 are disposed on the battery top cover 4 in a cladding structure when the posts 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 inner cavity 42 is provided with a sealing element 2 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 of the pole column hole, 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 piece 2, so that the fixing part 11 of the pole column 1 and the second positioning piece 43 are sealed, the first sealing part 21 and the second sealing part 22 are extruded under the action of the second positioning piece 43, the sealing performance is improved, and the battery top cover 4 is safer and more reliable to use.
The pole post structure further comprises a first plastic part 5, wherein the first plastic part 5 comprises a covering part 51 covering the limiting part 411, and a first connecting part 532 and an isolating part 53 formed on the covering part 51, the isolating part 53 is arranged in the gap, 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 post 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 the edge of covering part 51, 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 first locating part 41 contact 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 member 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 riveting and bending at 90 degrees to make the vertical second sealing portion 22 in a horizontal state, and the horizontal second sealing portion 22 is squeezed, 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, and the protrusion 431 and the fixing portion 11 of the pole 1 are tightly sealed.
In the above description, 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 surrounding the limiting part 411, and the sealing convex ring is attached to the limiting part 411, at this time, the battery top cover 4 provided with the pole 1 is arranged in a stamping die, the vertical protrusion 431 is riveted and turned inwards by 45 degrees to form the inclined protrusion 431, the 45-degree turned protrusion 431 is turned over to be in a 90-degree transverse state by using a riveting punch, the vertical second sealing part 22 is made to be in a transverse state to be closely attached to the lower side surface of the fixing part 11 of the pole 1, the transverse second sealing part 22 is extruded, the first sealing part 21 is also extruded by the interaction between the limiting part 411 and the fixing part 11 of the pole 1, the protrusion and the fixing part 11 of the pole 1 are sealed tightly, then the first sealing part 21 is arranged in a pre-molded plastic injection molding manner that the first positioning part 41 is directly molded in the pre-molding die 41, and the first positioning part 41 is encapsulated.
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 bottom surface of the second sealing portion 22 is flush with the bottom surface of the fixing portion 11 of the pole 1 due to the arrangement of the second sealing portion 22, and the second sealing portion 22 can be effectively positioned, so that the structural stability is improved.
Preferably, still including connecting the second of battery top cap 4 and moulding 6, second moulding 6 is provided with top pressfitting portion and is located the through-hole of utmost point post hole 40 below, and top pressfitting portion runs through utmost point post hole 40 and 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 the convex part edge, and the convex part inserts fixed with the fixed part 11 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 electrically conductive connecting piece and the electric core in 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, the clamping portion is clamped in an inner concave formed by forming a protrusion 431 on the battery top cover 4 through riveting, 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 hole 40 in the position of the negative pole 1 and the pole hole 40 in the position of the positive pole 1 respectively.
Example two:
as shown in fig. 6, the power battery described in this embodiment includes a battery housing 100 and a battery top cover 4 respectively fitted to two ports of the battery housing. 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 sheet 8 is on the battery top cover 4 with the negative pole post 102, the explosion-proof valve sheet 8 can be of an integrated structure with the battery top cover 4, or a split structure fixed in the explosion-proof valve hole 46 through welding, the first positioning member 41 can be selected to be a square ring structure or a circular ring structure according to actual conditions, and the post 1, the post hole 40 and the sealing member 2 are all selected to be circular or square according to actual conditions.
In this embodiment, the coating structures of the positive electrode post 101 and the negative electrode post 102 when they are mounted via the post 1 are respectively disposed on different battery top covers 4, wherein the post 1 mounting structure of the post 1 on the battery top cover 4 is identical to the post 1 mounting structure of the first embodiment, and therefore details are not repeated herein, but the second plastic member 6 is different from the first embodiment, and the second plastic member 6 in this embodiment is a split structure, so that the bottom surface of the battery top cover 4 at two ports of the battery case has the second plastic member 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 cathode post 102, the aluminum alloy material is used as an anode post 101, and the sealing ring is made of an insulating material; the copper-aluminum alloy is made of an aluminum block on the upper half part and a copper block on the lower half part, and then the copper block and the aluminum block are compounded to form the copper-aluminum alloy.
Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (12)
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 the spacing portion (411) of interval setting of continuous setting around electric connection portion (12) of utmost point post (1) 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) in a turnover mode along the circumferential direction of the pole column hole, and a second sealing part (22) located between the fixing part (11) of the pole column (1) and the second positioning piece (43) is formed on the sealing piece (2); the sealing element (2) is made of insulating material.
2. The cladding structure of the battery top cover according to claim 1, wherein: still including first plastic (5), first plastic (5) include isolation portion (53), and isolation portion (53) are arranged in the interval so that spacing portion and the isolation is insulating between the electric connection portion of utmost point post.
3. The cladding structure of the battery top cover as claimed in claim 2, 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.
4. 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).
5. The cladding structure of the battery top cover as claimed in claim 1, wherein: 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 column hole (40) or a plurality of bulges (431) which are arranged at intervals, and the bulge (431), the fixing part (11) of the pole column (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 column (1) and the bulge (431) and the fixing part (11) of the pole column (1) are arranged in a sealing way.
6. The cladding structure of the battery top cover as claimed in claim 5, 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).
7. The cladding structure of the battery top cover as claimed in claim 6, 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).
8. The cladding structure of the battery top cover as claimed in claim 7, 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.
9. The cover structure of claim 8, wherein: the electric conduction connecting piece comprises a convex part and a bonding part formed at the edge of the convex part, the convex part is inserted into the through hole and then fixed with the fixing part (11) of the pole (1), and the bonding part is bonded on the lower surface of the second plastic part (6).
10. The sheathing structure of a battery top cap according to claim 2 or 3, wherein: 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.
11. The structure of 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).
12. 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 clad structure of the battery top cap (4) according to any one of claims 1 to 11;
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 |
|---|---|---|---|
| CN202221486661.6U CN217691396U (en) | 2022-06-13 | 2022-06-13 | Cladding formula structure and battery top cap subassembly of battery top cap |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221486661.6U CN217691396U (en) | 2022-06-13 | 2022-06-13 | Cladding formula structure and battery top cap subassembly of battery top cap |
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| CN217691396U true CN217691396U (en) | 2022-10-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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2022
- 2022-06-13 CN CN202221486661.6U patent/CN217691396U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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