CN114865179A - Integrated pole, top cover assembly, battery and battery module - Google Patents
Integrated pole, top cover assembly, battery and battery module Download PDFInfo
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- CN114865179A CN114865179A CN202210601180.3A CN202210601180A CN114865179A CN 114865179 A CN114865179 A CN 114865179A CN 202210601180 A CN202210601180 A CN 202210601180A CN 114865179 A CN114865179 A CN 114865179A
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- welding ring
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- 238000003466 welding Methods 0.000 claims abstract description 75
- 238000007789 sealing Methods 0.000 claims abstract description 41
- 238000001746 injection moulding Methods 0.000 claims abstract description 28
- 229920003023 plastic Polymers 0.000 claims description 16
- 239000004033 plastic Substances 0.000 claims description 16
- 239000003292 glue Substances 0.000 claims description 9
- 238000005452 bending Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 230000010354 integration Effects 0.000 abstract description 4
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 229910000679 solder Inorganic materials 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
-
- 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
- H01M50/531—Electrode connections inside a battery casing
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention provides an integrated pole, a top cover assembly, a battery and a battery module, wherein the integrated pole comprises a first welding ring, a sealing ring is arranged on the inner side of the first welding ring, the sealing ring is sleeved on the periphery of the pole, injection molding pieces are sleeved on the peripheries of the first welding ring, the sealing ring and the pole, the injection molding pieces fix the first welding ring, the sealing ring and the pole into a whole, and the first welding ring is welded on a second welding ring to form an integrated structure. The integrated pole provided by the invention simplifies the structure of the pole and the assembly of the top cover component, improves the assembly efficiency and reduces the manufacturing cost; and integration utmost point post unit mount is outside at the top cap piece, and the inside space utilization of casing is higher, effectively promotes battery energy density. In addition, the thickness of the integrated pole provided by the invention is thinner, the weight of the battery cover plate is reduced, and the energy density of the battery is further improved.
Description
Technical Field
The invention belongs to the technical field of battery production and manufacturing, and particularly relates to an integrated pole, a top cover assembly, a battery and a battery module.
Background
At present, the battery case generally adopts a square hard shell structure, and provides a closed accommodating space for an electrode assembly and electrolyte. The battery case includes a case body and a cap assembly, wherein electric energy of the electrode assembly is drawn out from the inside of the sealed space to the outside of the sealed space through the terminal of the cap assembly. In the existing roof module, the roof plate is usually a metal plate and is opened with a through hole, and the pole is divided into a base portion and an extended portion, and the cross-sectional area of the base portion is larger than the aperture of the through hole. During the assembly, utmost point post base member portion is located the below of lamina tecti (inside the casing promptly), treats that the extension passes and utilizes the jump ring or adopts the riveting mode fixed extension behind the through-hole, fixes utmost point post in lamina tecti through this mode.
However, since the structure of the terminal post itself and the assembly process are complicated, not only the assembly efficiency of the battery is reduced, but also the cost and weight of the battery top cover are increased. Meanwhile, in the above assembly method, the base portion of the pole is located inside the housing, so that the space utilization rate inside the housing is reduced, and the energy density of the battery is reduced. Therefore, the pole column structure and the assembly mode of the pole column structure on the battery top cover are optimized and improved, and the pole column structure and the assembly mode are of great importance for further improving the energy density of the battery.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an integrated pole, a top cover assembly, a battery and a battery module, wherein the pole adopts an integrated design, so that the structure of the pole is simplified, the integrated pole can be suitable for different battery products, the structural assembly of the top cover assembly is simpler, the assembly efficiency is improved, and the manufacturing cost is reduced; and integration utmost point post unit mount is in the outside of top cap piece, and the assembly space of electric core is bigger, and the inside space utilization of casing is higher to effectively promote battery energy density. In addition, the thickness of the integrated pole provided by the invention is thinner, and the weight of the battery cover plate can be obviously reduced, so that the energy density of the battery is further improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides an integrated pole which comprises a first welding ring, wherein a sealing ring is installed on the inner side of the first welding ring, the sealing ring is sleeved on the periphery of the pole, injection molding pieces are sleeved on the peripheries of the first welding ring, the sealing ring and the pole, the first welding ring, the sealing ring and the pole are fixed into a whole by the injection molding pieces, and the first welding ring is welded on a second welding ring to form an integrated structure.
In a preferred embodiment of the present invention, the first weld ring includes a main body portion and a first weld portion provided at a bottom portion of the main body portion, and the first weld portion extends outward of the main body portion and is provided around a bottom edge of the main body portion.
Preferably, the main body part is provided with a through hole, and the through hole is used for filling injection molding glue into the integrated pole.
Preferably, the main body includes a straight cylindrical main body or a bent main body.
Preferably, the straight cylindrical body portion comprises a first straight cylindrical section.
Preferably, the bent main body portion includes a second straight cylinder section and an annular bending section disposed at the top of the second straight cylinder section, and the second straight cylinder section and the annular bending section are integrally formed.
As a preferable technical solution of the present invention, a second welding portion, a groove, and a land are sequentially disposed on a surface of the second weld ring from an outer edge of the second weld ring to an inner edge of the second weld ring.
Preferably, the groove is matched with the first welding part, and the first welding ring is welded on the second welding ring through the matching of the groove and the first welding part.
Preferably, the sealing ring abuts the platform.
As a preferred aspect of the present invention, the seal ring includes an annular vertical portion and an annular horizontal portion, and the vertical portion and the horizontal portion form a stepped annular structure.
Preferably, the vertical portion of the sealing ring is located between the first welding ring and the pole column, and the horizontal portion of the sealing ring is located between the pole column and the platform of the second welding ring.
In a second aspect, the invention provides a top cover assembly, which comprises a top cover plate provided with a pole assembling groove, wherein a pole is fixed at the pole assembling groove, and the pole is the integrated pole in the first aspect.
As a preferred technical scheme of the invention, the bottom of the pole assembling groove is coaxially provided with a pole through hole, the pole assembling groove is matched with the second welding ring, and the pole is fixed on the top surface of the top cover plate by welding the second welding part and the pole assembling groove.
As a preferred technical scheme of the present invention, the top cover assembly further includes a lower plastic disposed on a side of the top cover plate away from the pole.
Preferably, the top cover plate is further provided with an explosion-proof plate hole penetrating through the top cover plate.
Preferably, the two sides of the explosion-proof piece hole are respectively provided with an explosion-proof piece and an explosion-proof piece protection plate, and the explosion-proof piece is arranged between the top cover piece and the lower plastic.
In a third aspect, the present invention provides a battery comprising a housing and the cap assembly of the second aspect.
As a preferable technical solution of the present invention, one end of the housing is open, or both ends of the housing are open.
In a fourth aspect, the present invention provides a battery module including the battery of the third aspect.
Compared with the prior art, the invention has the beneficial effects that:
the integrated pole provided by the invention adopts an integrated design, so that the structure of the pole is simplified, the integrated pole can be suitable for different battery products, the structural assembly of the top cover component is simpler, the assembly efficiency is improved, and the manufacturing cost is reduced; and integration utmost point post unit mount is in the outside of top cap piece, and the assembly space of electric core is bigger, and the inside space utilization of casing is higher to effectively promote battery energy density. In addition, the thickness of the integrated pole provided by the invention is thinner, and the weight of the battery cover plate can be obviously reduced, so that the energy density of the battery is further improved.
Drawings
Fig. 1 is an exploded schematic view of an integrated pole according to an embodiment of the present invention.
Fig. 2 is a schematic cross-sectional view of an integrated pole according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of an integrated pole according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a first solder ring according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of another first solder ring according to an embodiment of the present invention.
Fig. 6 is a schematic cross-sectional view of another integrated pole according to an embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a second solder ring according to an embodiment of the present invention.
Fig. 8 is a schematic structural diagram of a cap assembly according to another embodiment of the present invention.
Fig. 9 is a schematic cross-sectional view of a cap assembly according to another embodiment of the present invention.
Fig. 10 is an exploded view of a cap assembly according to another embodiment of the present invention.
Wherein, 10-a first solder ring; 11-a body portion; 12-a first weld; 13-a through hole; 20-sealing ring; 30-pole column; 40-injection molding; 50-a second solder ring; 51-a second weld; 52-a groove; 53-platform; 100-top cover sheet; 110-a positive pole assembling groove; 120-a positive pole through hole; 130-cathode pole assembling groove; 140-cathode post through hole; 150-liquid injection hole; 160-explosion-proof sheet hole; 200-positive pole; 300-cathode pole column; 400-discharging plastic; 500-explosion-proof piece; 600-explosion-proof sheet protection plate.
Detailed Description
It is to be understood that in the description of the present invention, the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be taken as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
It should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
In a specific embodiment, the present invention provides an integrated pole, as shown in fig. 1, fig. 2 and fig. 3, the integrated pole includes a first welding ring 10, a sealing ring 20 is installed inside the first welding ring 10, the sealing ring 20 is sleeved on the outer periphery of the pole 30, an injection molding member 40 is sleeved on the outer peripheries of the first welding ring 10, the sealing ring 20 and the pole 30, the injection molding member 40 fixes the first welding ring 10, the sealing ring 20 and the pole 30 into a whole, and the first welding ring 10 is welded on a second welding ring 50 to form an integrated structure.
According to the invention, the first welding ring 10 is welded on the second welding ring 50, then the sealing ring 20 is arranged on the inner side of the first welding ring 10, the pole 30 is pressed on the sealing ring 20, the sealing ring 20 is sleeved on the periphery of the pole 30, and finally the injection molding part 40 is formed through an injection molding process to fix the first welding ring 10, the sealing ring 20 and the pole 30 together, so that the integrated pole with a simple structure is obtained. The injection molding part 40 is sleeved on the periphery of the integral structure of the first welding ring 10, the sealing ring 20 and the pole 30, namely, the exposed peripheries of the first welding ring 10, the sealing ring 20 and the pole 30 are all covered by the injection molding part 40 after the first welding ring 10, the sealing ring 20 and the pole 30 are assembled; it should be noted that the injection molded part 40 only covers the exposed side surfaces of the first weld ring 10, the seal ring 20 and the pole 30 to achieve the fixing function, and the upper end surface of the pole 30 is in an exposed state and is not covered by the injection molded part 40.
The integrated pole provided by the invention adopts an integrated design, so that the structure of the pole is simplified, the integrated pole can be suitable for different battery products, the structural assembly of the top cover component is simpler, the assembly efficiency is improved, and the manufacturing cost is reduced; and integration utmost point post unit mount is in the outside of top cap piece 100, and the assembly space of electric core is bigger, and the space utilization inside the casing is higher to effectively promote battery energy density. In addition, the thickness of the integrated pole provided by the invention is thinner, and the weight of the battery cover plate can be obviously reduced, so that the energy density of the battery is further improved.
In one embodiment, as shown in fig. 4, the first weld ring 10 includes a main body 11 and a first weld portion 12 provided at the bottom of the main body 11, and the first weld portion 12 extends to the outside of the main body 11 and is provided around the bottom edge of the main body 11.
In the present invention, the first welding portion 12 is annularly provided at the bottom end of the main body 11, and the first welding portion 12 and the main body 11 may be integrally formed, or the first welding portion 12 may be fixed to the bottom end of the main body 11 by welding or the like.
In one embodiment, the main body 11 is provided with a through hole 13, and the through hole 13 is used for filling injection molding glue into the integrated pole.
In the process of forming the injection molding part 40 by adopting an injection molding process, the injection molding glue can flow into the integrated pole through the through hole 13 on the main body part 11, so that the injection molding glue is filled in the integrated pole and the through hole 13, and then the injection molding glue is formed into the injection molding part, so that the overcurrent performance and the tensile property of the pole 30 can be further improved, and the fixing effect on the integrated pole is enhanced from the inside.
In one embodiment, as shown in fig. 4 and 5, the main body 11 includes a straight-tube-shaped main body 11 or a bent-tube-shaped main body 11.
In one embodiment, the straight tubular body portion 11 includes a first straight tubular section.
In one embodiment, the bent main body 11 includes a second straight cylinder and a ring-shaped bending section disposed on the top of the second straight cylinder, and the second straight cylinder and the ring-shaped bending section are integrally formed.
The body 11 of the first weld ring 10 of the present invention may be a straight cylindrical body 11 or a bent body 11, and as shown in fig. 6, the body 11 of the first weld ring has an integral pole structure assembled with the bent body 11, and is substantially the same as the integral pole structure assembled with the body 11 having a straight cylindrical body 11. The structure of the body 11 in the first weld ring 10 is various, and the first weld ring 10 having different structures of the body 11 can be selected according to actual production conditions and requirements, thereby being suitable for various poles 30 and requirements of battery products. In the present invention, the bent body 11 means that the tip of the body 11 has a constant curvature.
In one embodiment, as shown in fig. 7, a surface of the second weld ring 50 is provided with a second weld 51, a groove 52, and a land 53 in this order from an outer edge of the second weld ring 50 to an inner edge of the second weld ring 50. In the present invention, the second welding portion 51, the groove 52 and the land 53 are annularly arranged along the circumferential direction of the second weld ring 50.
In one embodiment, groove 52 mates with first weld 12 and first weld ring 10 is welded to second weld ring 50 by mating groove 52 with first weld 12.
In one embodiment, the seal ring 20 abuts the platform 53.
In one embodiment, the second welding part 51 is welded to the top surface of the top cover sheet 100.
In the present invention, the first welding part 12 of the first weld ring 10 is placed in the groove 52, and then welding is performed to fix the first weld ring 10 to the second weld ring 50; the platform 53 of the second weld ring 50 provides a force point for the post 30 to press the seal ring 20 down; and the second welding part 51 of the second welding ring 50 is welded to the top surface of the top cover plate 100, so that the integrated pole is integrally assembled outside the housing.
In one embodiment, the seal ring 20 includes an annular vertical portion and an annular horizontal portion, the vertical and horizontal portions forming a stepped annular structure; the vertical portion of the sealing ring 20 is located between the first weld ring 10 and the pole post 30, and the horizontal portion of the sealing ring 20 is located between the pole post 30 and the platform 53 of the second weld ring 50.
The cross section of the sealing ring 20 is L-shaped, the vertical part is extruded between the first welding ring 10 and the pole post 30, and the horizontal part is extruded between the pole post 30 and the platform 53, namely, certain extrusion is formed on the vertical part and the horizontal part of the sealing ring 20 in the process that the sealing ring 20 is pressed down by the pole post 30, so that the sealing effect is achieved; wherein, can adjust the distance that pushes down of utmost point post 30 to sealing washer 20, adjust the deformation degree of horizontal part promptly, satisfy the requirement of actual production technology to sealed degree.
The preparation process of the integrated pole provided by the invention comprises the following steps: after the first welding part 12 of the first welding ring 10 is placed in the groove 52, welding is performed to fix the first welding ring 10 on the second welding ring 50; then install the sealing washer 20 at the inboard of first weld ring 10, the utmost point post 30 forms injection molding 40 through the technology of moulding plastics after pushing down sealing washer 20 afterwards to fix first weld ring 10, second weld ring 50, utmost point post 30 and sealing washer 20 together, form integral type utmost point post structure. Meanwhile, in the injection molding process, the injection molding glue can flow into the integrated pole through the through hole 13 of the main body part 11, so that the injection molding glue is filled in the integrated pole and the through hole 13, and then the injection molding glue forms an injection molding part. In addition, the integrated pole is divided into a positive integrated pole structure and a negative integrated pole structure.
In a specific embodiment, the present invention provides a top cover assembly, which includes a top cover plate 100 having a post assembly slot, where a post is fixed, and the post is an integrated post in the above specific embodiment.
The top cover assembly provided by the invention is simpler to assemble, does not need a complex assembly process, improves the assembly efficiency, has larger assembly space of the battery core and smaller weight of the battery cover plate, reduces the preparation cost of the battery cover plate and improves the energy density of the battery core. In a specific embodiment, the bottom of the pole assembling groove is coaxially provided with a pole through hole, the pole assembling groove is matched with the second welding ring 50, and the pole is fixed on the top surface of the top cover plate 100 by welding the second welding part 51 and the pole assembling groove.
The pole assembling groove is set to be of a step structure, the diameter of the pole through hole is smaller than the diameter of the bottom of the pole assembling groove, namely the bottom of the pole assembling groove is a circular ring platform; wherein, the pole assembling groove is matched with the second welding ring 50, that is, the circular ring platform at the bottom of the pole assembling groove is matched with the second welding ring 50 in size.
In one embodiment, the top cover plate 100 is provided with a post assembly slot as the positive post assembly slot 110 or the negative post assembly slot 130, the through hole at the bottom of the post assembly slot is used as the positive post through hole 120 or the negative post through hole 140, and the post is the positive post 200 or the negative post 300.
In one embodiment, as shown in fig. 8, 9 and 10, the top cover sheet 100 is provided with two electrode post assembling grooves, namely a positive electrode post assembling groove 110 and a negative electrode post assembling groove 130, and the positive electrode post assembling groove 110 and the negative electrode post assembling groove 130 are respectively arranged on two opposite sides of the top cover sheet 100; the bottom of the anode post assembly groove 110 is coaxially provided with an anode post through hole 120, and the bottom of the cathode post assembly groove 130 is coaxially provided with a cathode post through hole 140; the poles include a positive pole 200 and a negative pole 300. In one embodiment, the top cap assembly further comprises a lower plastic 400, and the lower plastic 400 is disposed on a side of the top cap sheet 100 away from the pole.
In one embodiment, the lower plastic 400 is connected to the top cover sheet 100 by means of snap-fitting or heat-melting; the lower plastic 400 is provided with a lower plastic through hole corresponding to the pole through hole.
In the invention, when the lower plastic 400 is connected with the top cover plate 100 in a clamping manner, the top of the lower plastic 400 is provided with a buckle structure matched with the pole through hole, the buckle structure is connected with the inner edge of the bottom of the pole assembling groove in a clamping manner, and the buckle structures can be uniformly distributed on the periphery of the lower plastic through hole, and the number of the buckle structures is at least two.
In one embodiment, the top flap 100 is further provided with an explosion-proof sheet hole 160 penetrating the top flap 100.
In one embodiment, the explosion-proof sheet 500 and the explosion-proof sheet protection plate 600 are respectively disposed at both sides of the explosion-proof sheet hole 160, and the explosion-proof sheet 500 is disposed between the top cover sheet 100 and the lower plastic 400.
In one embodiment, the top cover sheet 100 further has a pour hole 150 formed therethrough.
After the battery cover plate and the battery case are assembled, the electrolyte is injected into the case through the injection hole 150, and then the injection hole 150 is sealed. In addition, the corresponding positions of the lower plastic 400 are respectively provided with an explosion-proof sheet air hole and a liquid injection through hole, the explosion-proof sheet air hole is correspondingly arranged right below the explosion-proof sheet hole 160, and the liquid injection through hole is correspondingly arranged right below the liquid injection hole 150.
In one embodiment, the present invention provides a battery comprising a housing and a cap assembly as described in one embodiment above.
The battery shell provided by the invention has the advantages of high space utilization rate, light weight and high energy density.
In one embodiment, one end of the housing is open, or both ends of the housing are open.
The battery provided by the invention can be of a single top cover structure or a double top cover structure; the single top cover structure refers to a group of top cover components, wherein the two abutting sides of the top cover sheet 100 in the top cover components are respectively provided with a positive pole post assembly groove 110 and a negative pole post assembly groove 130; the double-top-cover structure refers to the adoption of two groups of top cover components, and a pole assembling groove is formed in the top cover piece 100 of each group of top cover components and is respectively used as a positive pole assembling groove 110 and a negative pole assembling groove 130.
In one embodiment, the present invention provides a battery module including the battery of one embodiment described above.
In the invention, a plurality of batteries are connected in series or in parallel to form a battery module, and the battery module provided by the invention can be used for PACK.
The applicant declares that the above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are within the scope and disclosure of the present invention.
Claims (10)
1. The utility model provides an integral type utmost point post, its characterized in that, integral type utmost point post includes first welding ring, the sealing washer is installed to the inboard of first welding ring, the periphery at utmost point post is established to the sealing washer cover, first welding ring the sealing washer with the periphery cover of utmost point post is equipped with the injection molding, the injection molding will first welding ring the sealing washer with utmost point post is fixed as an organic whole, first welding ring welds and forms the integral type structure on the second welding ring.
2. The integrated pole according to claim 1, wherein the first weld ring comprises a main body portion and a first weld portion disposed at a bottom of the main body portion, the first weld portion extending outward of the main body portion and disposed around a bottom edge of the main body portion;
preferably, the main body part is provided with a through hole, and the through hole is used for filling injection molding glue into the integrated pole;
preferably, the main body includes a straight cylindrical main body or a bent main body;
preferably, the straight cylindrical body portion comprises a first straight cylindrical section;
preferably, the bent main body portion includes a second straight cylinder section and an annular bending section disposed at the top of the second straight cylinder section, and the second straight cylinder section and the annular bending section are integrally formed.
3. The integrated pole according to claim 1 or 2, wherein a second welding part, a groove and a platform are sequentially arranged on the surface of the second welding ring from the outer edge of the second welding ring to the inner edge of the second welding ring;
preferably, the groove is matched with the first welding part, and the first welding ring is welded on the second welding ring through the matching of the groove and the first welding part;
preferably, the sealing ring abuts the platform.
4. The integrated pole post according to any one of claims 1 to 3, wherein the sealing ring comprises an annular vertical part and an annular horizontal part, the vertical part and the horizontal part forming a stepped annular structure;
preferably, the vertical portion of the sealing ring is located between the first welding ring and the pole column, and the horizontal portion of the sealing ring is located between the pole column and the platform of the second welding ring.
5. A top cover component is characterized by comprising a top cover plate provided with a pole assembling groove, a pole is fixed at the pole assembling groove, and the pole is an integrated pole according to any one of claims 1 to 4.
6. The top cover assembly according to claim 5, wherein the bottom of the pole assembling groove is coaxially provided with a pole through hole, the pole assembling groove is matched with the second welding ring, and the pole is fixed on the top surface of the top cover plate by welding the second welding part with the pole assembling groove.
7. The top cap assembly of claim 5 or 6, further comprising a lower plastic disposed on a side of the top cap sheet away from the post;
preferably, the top cover plate is also provided with an explosion-proof plate hole penetrating through the top cover plate;
preferably, the two sides of the explosion-proof piece hole are respectively provided with an explosion-proof piece and an explosion-proof piece protection plate, and the explosion-proof piece is arranged between the top cover piece and the lower plastic.
8. A battery comprising a housing and the cap assembly of any one of claims 5-7.
9. The battery of claim 8, wherein one end of the case is open, or both ends of the case are open.
10. A battery module characterized by comprising the battery according to claim 8 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210601180.3A CN114865179A (en) | 2022-05-30 | 2022-05-30 | Integrated pole, top cover assembly, battery and battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210601180.3A CN114865179A (en) | 2022-05-30 | 2022-05-30 | Integrated pole, top cover assembly, battery and battery module |
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| Publication Number | Publication Date |
|---|---|
| CN114865179A true CN114865179A (en) | 2022-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210601180.3A Pending CN114865179A (en) | 2022-05-30 | 2022-05-30 | Integrated pole, top cover assembly, battery and battery module |
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| CN (1) | CN114865179A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115320007A (en) * | 2022-10-13 | 2022-11-11 | 宁波震裕科技股份有限公司 | Injection molding pole post forming method and power battery top cover structure |
| CN115411467A (en) * | 2022-10-13 | 2022-11-29 | 宁波震裕科技股份有限公司 | Manufacturing method of riveted pole and battery top cover assembly |
| 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 |
| CN116053720A (en) * | 2023-03-06 | 2023-05-02 | 常州瑞德丰精密技术有限公司 | Method for assembling composite pole of single battery without top cover |
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| CN114447413A (en) * | 2022-01-28 | 2022-05-06 | 天津市捷威动力工业有限公司 | Battery cover plate and battery |
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| CN209374497U (en) * | 2019-01-25 | 2019-09-10 | 东莞百思利新能源科技有限公司 | Secondary cell top cover |
| CN214625197U (en) * | 2021-01-22 | 2021-11-05 | 荣盛盟固利新能源科技有限公司 | Battery cover plate and power battery |
| CN214957087U (en) * | 2021-01-25 | 2021-11-30 | 荣盛盟固利新能源科技有限公司 | Battery cover plate and power battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN115320007A (en) * | 2022-10-13 | 2022-11-11 | 宁波震裕科技股份有限公司 | Injection molding pole post forming method and power battery top cover structure |
| CN115411467A (en) * | 2022-10-13 | 2022-11-29 | 宁波震裕科技股份有限公司 | Manufacturing method of riveted pole and battery top cover assembly |
| CN115320007B (en) * | 2022-10-13 | 2023-02-10 | 宁波震裕科技股份有限公司 | Injection molding pole post forming method and power battery top cover structure |
| CN116053720A (en) * | 2023-03-06 | 2023-05-02 | 常州瑞德丰精密技术有限公司 | Method for assembling composite pole of single battery without top cover |
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