CN114361667A - Top cover assembly, assembly method of top cover assembly and battery - Google Patents
Top cover assembly, assembly method of top cover assembly and battery Download PDFInfo
- Publication number
- CN114361667A CN114361667A CN202210002860.3A CN202210002860A CN114361667A CN 114361667 A CN114361667 A CN 114361667A CN 202210002860 A CN202210002860 A CN 202210002860A CN 114361667 A CN114361667 A CN 114361667A
- Authority
- CN
- China
- Prior art keywords
- top cover
- pole
- terminal
- post
- cover plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 120
- 230000002093 peripheral effect Effects 0.000 claims abstract description 11
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 239000011324 bead Substances 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 5
- 238000009413 insulation Methods 0.000 abstract description 4
- 230000002349 favourable effect Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 9
- 230000013011 mating Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 238000005452 bending Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 230000001737 promoting effect Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 206010040007 Sense of oppression Diseases 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000012857 repacking Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Images
Classifications
-
- 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
-
- 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
Landscapes
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a top cover assembly, an assembling method of the top cover assembly and a battery, wherein the top cover assembly comprises a top cover plate, a terminal pole, a sealing element, a lower plastic part and an electric connecting piece, the top cover plate is provided with a pole matching hole, the terminal pole is arranged in the pole matching hole in a penetrating manner and provided with a first connecting surface and a second connecting surface which are oppositely arranged, the sealing element is sleeved on the terminal pole and clamped between the terminal pole, the inner peripheral wall of the pole matching hole and the upper surface of the top cover plate, the lower plastic part is attached to the lower surface of the top cover plate, and the electric connecting piece is attached to the lower plastic part and connected with the terminal pole. This top cap subassembly has promoted the overlap height of terminal utmost point post and top cap piece under the prerequisite of guaranteeing the two insulation to be favorable to electric core energy density's improvement.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a top cover assembly, an assembly method of the top cover assembly and a battery.
Background
Power energy storage on the existing market usually adopts square electric core, in order to improve the pole piece filling rate, often establishes the terminal and covers on the top cap piece, and the top cap piece has deposited the electrode and draws forth the hole, has the electrode to draw forth the vertical space that the hole was located idle after the installation of electric core subassembly, and the space is effectively utilized not, is unfavorable for electric core energy density's improvement, and terminal itself highly sets up more than the top cap piece, has occupied technical problem such as module vertical space.
Disclosure of Invention
The first purpose of the present invention is to provide a top cover assembly, which increases the overlapping height of a terminal post and a top cover plate while ensuring the insulation between the terminal post and the top cover plate, thereby facilitating the increase of the cell energy density.
A second object of the present invention is to provide a battery having a housing with a large space, a cell with a larger size, and a high energy density.
The invention discloses a top cover assembly, comprising: the top cover plate is provided with a pole matching hole; the terminal post penetrates through the post fitting hole and is provided with a first connecting surface and a second connecting surface which are oppositely arranged; the sealing element is sleeved on the terminal pole and clamped among the terminal pole, the inner peripheral wall of the pole fitting hole and the upper surface of the top cover plate; the lower plastic part is attached to the lower surface of the top cover plate; the electric connecting piece is attached to the lower plastic piece and is connected with the terminal pole; wherein: the first connecting surface and the second connecting surface are respectively positioned at two sides of the top cover sheet.
In some embodiments, the terminal post has a first assembled state and a second assembled state; wherein: first assembled state, first connection face with the plastic part deviates from down the surface of top cover plate flushes the setting, just first connection face with the electric connector laminating second assembled state, the second connect the face with the plastic part deviates from down the surface of top cover plate flushes the setting, just the second connect the face with the electric connector laminating.
In some embodiments, the terminal post comprises a post portion and a pole plate portion which are connected, a bendable sealing flange which is arranged at an interval with the post portion and is pressed on the sealing element is arranged on the pole plate portion.
In some specific embodiments, the sealing bead is disposed along a circumferential extension of the pole portion.
In some specific embodiments, the post fitting hole of the sealing member fitted with the terminal post is a stepped hole and includes a first hole and a second hole, and the diameter of the first hole is smaller than that of the second hole; in the first assembling state, the first hole is matched with the part of the sealing flanging which is not bent, and the second hole is matched with the pole plate part; in the second assembling state, the first hole is matched with the part of the sealing flange which is not bent, and the second hole is matched with the part of the sealing flange which is bent.
In some embodiments, a matching protrusion is arranged on the upper surface of the top cover sheet, a receiving groove is arranged on the matching protrusion, a matching flange extending along the circumferential direction of the sealing element is arranged on the outer circumferential wall of the sealing element, and the matching flange is matched in the receiving groove.
In some embodiments, the inner side wall of the pole fitting hole is provided with annular protrusions arranged at intervals along the circumferential direction of the pole fitting hole, the outer circumferential wall of the sealing element is provided with an annular groove extending along the circumferential direction of the sealing element, and the annular groove is matched with the annular protrusions.
The invention also discloses an assembly method of the top cover assembly, which comprises the following steps: sleeving the sealing element on the terminal pole; the terminal pole and the sealing element which are assembled in advance are installed into the pole fitting hole from the upper side or the lower side of the top cover plate; and connecting the lower plastic part at the bottom of the top cover plate, and installing the electric connecting piece below the terminal pole.
In some embodiments, after the pre-assembled terminal post and the sealing member are loaded into the post fitting hole from above or below the top cover sheet, the method further comprises:
the assembled terminal post, the sealing element and the top cover plate are placed on a fixed workbench, so that the upper surface/the lower surface of the terminal post is supported, and the sealing flanging of the terminal post is pressed from top to bottom so as to be pressed on the sealing element.
The invention also discloses a battery, which comprises the top cover assembly and the shell, wherein the battery core is arranged in the shell, and the top cover assembly is buckled on the shell.
The top cover assembly has the beneficial effects that: because the first connection face and the second connection face of terminal utmost point post are equallyd divide and are located the both sides of top cap piece for the coincidence height maximize of terminal utmost point post and utmost point post mating holes, thereby make terminal utmost point post make full use of the space of utmost point post mating holes, reduced the height of whole top cap subassembly in terminal utmost point post department, be favorable to promoting the volume energy density of battery. Meanwhile, the sealing element not only ensures the connection sealing property between the terminal pole and the pole matching hole, but also ensures the insulation property between the upper surface of the terminal pole and the top cover plate and the inner peripheral wall of the pole matching hole, so that the top cover assembly is not required to be provided with an upper plastic part used in the traditional top cover assembly, the structure of the whole top cover assembly is simplified, and the manufacturing cost is reduced.
The assembly method of the top cover assembly has the beneficial effects that: in actual installation, terminal utmost point post both can be installed from the top down, also can be from the installation of making progress down, has realized the fool-proof installation of terminal utmost point post to make things convenient for the installation of terminal utmost point post, promoted top cap assembly's packaging efficiency.
The battery of the invention has the following beneficial effects: due to the top cover assembly, the inner space of the shell is abundant, a cell with a higher size can be placed, and the energy density of the battery is higher.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is an exploded schematic view of a header assembly in a first assembled state in accordance with an embodiment of the present invention;
FIG. 2 is a partial cross-sectional view of a cap assembly of an embodiment of the present invention in a first assembled state;
FIG. 3 is an exploded schematic view of the cap assembly of an embodiment of the present invention in a second assembled state;
FIG. 4 is a partial cross-sectional view of the cap assembly of the embodiment of the present invention in a second assembled state;
fig. 5 is a schematic structural view of the terminal post of the header assembly of the embodiment of the present invention before bending the sealing flange;
fig. 6 is a schematic structural view of the terminal post of the top cover assembly after bending the sealing flange;
fig. 7 is a schematic view of the seal of the cap assembly according to an embodiment of the present invention.
Reference numerals:
1. a top cover sheet; 11. pole fitting holes; 12. an annular projection; 13. a mating protrusion; 14. accommodating grooves; 15. an avoidance groove;
2. a terminal post; 21. a pole section; 211. a second connection face; 22. a pole plate portion; 221. a first connection face; 23. sealing and flanging;
3. a seal member; 31. pole assembling holes; 311. a first hole; 312. a second hole; 32. matching with flanging; 33. an annular groove;
4. a plastic part is put; 5. an electrical connection.
Detailed Description
In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features for distinguishing between descriptive features, non-sequential, non-trivial and non-trivial. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The specific structure of the cap assembly of the embodiment of the present invention will be described below with reference to fig. 1 to 7.
The invention discloses a top cover assembly, as shown in fig. 1 and 3, the top cover assembly comprises a top cover plate 1, a terminal pole 2, a sealing element 3, a lower plastic part 4 and an electric connecting piece 5, wherein the top cover plate 1 is provided with a pole matching hole 11, the terminal pole 2 penetrates through the pole matching hole 11 and is provided with a first connecting surface 221 and a second connecting surface 211 which are arranged oppositely, the sealing element 3 is sleeved on the terminal pole 2 and is clamped between the terminal pole 2, the inner peripheral wall of the pole matching hole 11 and the upper surface of the top cover plate 1, the lower plastic part 4 is attached to the lower surface of the top cover plate 1, and the electric connecting piece 5 is attached to the lower plastic part 4 and is connected with the terminal pole 2. The first connection face 221 and the second connection face 211 are located on both sides of the top cover sheet 1, respectively.
It can be understood that, first connection face 221 and second are connected face 211 and are equallyd divide and do not lie in the both sides of top cap piece 1, make terminal utmost point post 2 wear to establish in utmost point post mating holes 11 completely from this for terminal utmost point post 2 and utmost point post mating holes 11's coincidence height maximize, terminal utmost point post 2 has utilized utmost point post mating holes 11's space fully promptly, thereby has reduced the height of whole top cap subassembly in terminal utmost point post 2 department, is favorable to promoting the volume energy density of battery. Meanwhile, the surface of the top cover plate 1 close to the battery inner cell is a lower surface, and the surface of the top cover plate 1 departing from the battery inner cell is an upper surface. Meanwhile, since the sealing member 3 is sleeved on the terminal post 2 and clamped between the terminal post 2, the inner peripheral wall of the post fitting hole 11 and the upper surface of the top cover plate 1, the sealing member 3 not only ensures the connection sealing property between the terminal post 2 and the post fitting hole 11, but also ensures the insulation property between the terminal post 2 and the upper surface of the top cover plate 1 and the inner peripheral wall of the post fitting hole 11. From this, this embodiment top cap subassembly need not to set up the last plastic part that uses among the traditional top cap subassembly, has simplified whole top cap subassembly's structure, has reduced manufacturing cost.
It should be added that, in the actual structure, the terminal post 2 is divided into a positive post and a negative post, the material of the position of the first connection surface 221 and the second connection surface 211 of the positive post is aluminum, and the structure of the negative post may have two types, the first type: the first connection surface 221 is made of copper, and the second connection surface 211 is made of aluminum; and the second method comprises the following steps: the material of the first connection surface 221 may be aluminum, and the material of the second connection surface 211 may be copper.
In some embodiments, the terminal post 2 has a first assembly state and a second assembly state, as shown in fig. 2, in the first assembly state, the first connection surface 221 is flush with the surface of the lower plastic part 4 away from the top cover sheet 1, and the first connection surface 221 is attached to the electrical connector 5; as shown in fig. 4, in the second assembly state, the second connection surface 211 is flush with the surface of the lower plastic part 4 departing from the top cover plate 1, and the second connection surface 211 is attached to the electrical connector 5. It can be understood that, can understand, because terminal utmost point post 2 has two kinds of assembly, so in actual installation, terminal utmost point post 2 both can be installed from the top down, also can be from the installation that upwards is down, has realized terminal utmost point post 2 prevents slow-witted installation to make things convenient for terminal utmost point post 2's installation, promoted top cap assembly's packaging efficiency. Meanwhile, because electric connector 5 laminates under on plastic part 4, no matter be in first assembled state or in second assembled state, terminal utmost point post 2 all does not surpass plastic part 4 down, and electric connector 5 can adopt planar design, has avoided the cost that three-dimensional structure stamping forming brought to rise and the longer problem of development cycle. Meanwhile, the first connecting surface 221 and the lower plastic part 4 are flush with the surface of the top cover plate 1 or the second connecting surface 211 and the lower plastic part 4 are flush with the surface of the top cover plate 1, so that the terminal pole 2 and the electric connector 5 are convenient to connect.
In some embodiments, as shown in fig. 4 and 5, the terminal post 2 includes a post portion 21 and a plate portion 22 connected to each other, a bendable sealing flange 23 is provided on the plate portion 22 and spaced from the post portion 21, and the bent sealing flange 23 is pressed against the sealing member 3. It can be understood that, terminal utmost point post 2, sealing member 3, the sealed turn-ups 23 of terminal utmost point post 2 is in the position before the upset (the position that is parallel with the axial direction of utmost point post portion 21 promptly) before the assembly of top cap piece 1, the assembly can be installed smoothly this moment and target in place, terminal utmost point post 2 can assemble with top cap piece 1 again after 3 assemblies of sealing member earlier, after the assembly targets in place, carry out the turn-ups operation to sealed turn-ups 23, make sealed turn-ups 23 can overturn (turn over to the position perpendicular or be the acute angle with the axial direction of utmost point post portion 21), sealed turn-ups 23 after the upset compresses tightly sealing member 3, tightly live top cap piece 1 parcel, realize sealed effect. To sum up, the sealed turn-ups 23 that adds can make things convenient for and firmly compress tightly sealing member 3 on the upper surface on top cap piece 1 to both guaranteed terminal utmost point post 2, sealing member 3 and top cap piece 1 three's connection stability, guaranteed terminal utmost point post 2 and top cap piece 1's connection leakproofness again.
In some embodiments, the pole portion 21, the pole plate portion 22, and the sealing flange 23 are integrally formed. Therefore, the manufacturing process of the whole terminal post 2 is simplified, and the manufacturing cost of the terminal post 2 is reduced.
In some specific embodiments, the sealing bead 23 is provided along the circumferential extension of the pole part 21. It will be appreciated that the sealing flange 23 is disposed around the pole part 21, so that the sealing flange 23 can press the sealing member 3 tightly around the pole part 21 to the top cover plate 1 after being bent, thereby ensuring the pressing effect of the sealing flange 23 on the sealing member 3.
In some specific embodiments, as shown in fig. 2 and 4, the terminal post fitting hole 31 of the sealing member 3 fitted with the terminal post 2 is a stepped hole and includes a first hole 311 and a second hole 312, the diameter of the first hole 311 is smaller than the diameter of the second hole 312; in the first assembled state, the first hole 311 is fitted to the portion of the seal bead 23 that is not bent, and the second hole 312 is fitted to the pole plate portion 22; in the second assembled state, the first hole 311 is fitted to the portion of the sealing flange 23 which is not bent, and the second hole 312 is fitted to the portion of the sealing flange 23 which is bent. It can be understood that the post assembly hole 31 of the seal member 3 and the terminal post 2 is a stepped hole, so that the seal member 3 and the terminal post 2 are both tightly fitted in the first assembly state or the second assembly state, thereby improving the connection stability of the seal member 3 and the terminal post 2.
In some embodiments, as shown in fig. 2 and 4, the top cover sheet 1 is provided with a fitting projection 13 on its upper surface, and the fitting projection 13 is provided with a receiving groove 14, as shown in fig. 7, the outer peripheral wall of the sealing member 3 has a fitting flange 32 extending in its circumferential direction, and the fitting flange 32 is fitted in the receiving groove 14. It can be understood that, if the upper surface of top cover plate 1 is the plane, then sealed turn-ups 23 is just relatively poor to the compression effect of the cooperation turn-ups 32 of sealing member 3, be unfavorable for promoting the connection stability of sealing member 3, and in this embodiment, top cover plate 1 deviates from down plastic part 4 be equipped with the cooperation arch 13 on the surface, be equipped with holding tank 14 on the cooperation arch 13, sealed turn-ups 23 after bending can compress tightly the cooperation turn-ups 32 of sealing member 3 in holding tank 14, can furthest promote the sealing effect of sealing member 3 like this.
In some embodiments, as shown in fig. 2 and 4, the inner side wall of the pole fitting hole 11 is provided with annular protrusions 12 arranged at intervals along the circumferential direction thereof, as shown in fig. 7, the outer circumferential wall of the sealing member 3 is provided with annular grooves 33 arranged to extend along the circumferential direction thereof, and the annular grooves 33 are fitted with the annular protrusions 12. It is understood that the fitting of the annular groove 33 with the annular projection 12 can improve the connection stability and connection sealability of the seal member 3 with the top lid sheet 1, thereby ensuring the sealing property of the top lid sheet 1 at the fitting of the terminal post 2.
In some embodiments, the lower surface of the top cover plate 1 is provided with an escape groove 15 disposed around the pole fitting hole 11. It will be appreciated that the sealing member 3 is deformed during the process of bending the sealing flange 23, and the escape groove 15 can provide a space for the deformed sealing member 3, thereby ensuring stable connection of the sealing member 3 with the top sheet 1.
The invention also discloses an assembling method of the top cover assembly, which comprises the following steps:
sleeving the sealing element 3 on the terminal post 2;
the terminal post 2 and the sealing element 3 which are assembled in advance are arranged in the post fitting hole 11 from the upper part or the lower part of the top cover plate 1;
the lower plastic 4 is attached to the bottom of the top cover sheet 1 and the electric connector 5 is installed below the terminal post 2.
It can be understood that, in the actual installation, terminal utmost point post 2 both can be installed from the top down, also can be from the installation that makes progress down, has realized terminal utmost point post 2 prevents slow-witted installation to make things convenient for terminal utmost point post 2's installation, promoted top cap assembly's packaging efficiency.
In some embodiments, after the terminal post 2 and the sealing member 3 which are assembled in advance are loaded into the post fitting hole 11 from above or below the top cover sheet 1, the method further includes:
after the assembly, the terminal post 2, the sealing element 2 and the top cover plate 1 are placed on a fixed workbench, so that the upper surface/lower surface of the terminal post 2 is supported, and the sealing flanging 23 of the terminal post 2 is pressed from top to bottom so as to be pressed on the sealing element 3.
It can be understood that, from top to bottom/from top to bottom the sealed turn-ups 23 of terminal utmost point post 2 oppresses, makes its suppression on sealing member 3, can ensure the stability of being connected of terminal utmost point post 2 and top cap piece 1 on the one hand, and on the other hand can guarantee the leakproofness of being connected of terminal utmost point post 2 and top cap piece 1.
Example (b):
the specific structure of the cap assembly according to one embodiment of the present invention will be described with reference to fig. 1 to 7.
As shown in fig. 1, the top cap subassembly includes top cap piece 1, terminal utmost point post 2, sealing member 3, plastic part 4 and electric connector 5 down, is equipped with utmost point post mating holes 11 on the top cap piece 1, is equipped with on the inside wall of utmost point post mating holes 11 along the annular arch 12 that its circumferential direction interval set up, is equipped with the protruding 13 of cooperation on the upper surface of top cap piece 1, is equipped with holding tank 14 on the protruding 13 of cooperation. The lower surface of the top cover plate 1 is provided with an avoiding groove 15 arranged around the pole matching hole 11. The terminal post 2 is arranged in the post fitting hole 11 in a penetrating manner, and has a first connecting surface 221 and a second connecting surface 211 which are arranged oppositely, the terminal post 2 comprises a post part 21 and a pole plate part 22 which are connected, and a sealing flange 23 which is arranged at an interval with the post part 21 and can be bent is arranged on the pole plate part 22. The sealing element 3 is sleeved on the terminal post 2, the peripheral wall of the sealing element 3 is provided with a matching flange 32 extending along the circumferential direction of the sealing element, and the sealing flange 23 formed by bending the matching flange 32 is pressed in the accommodating groove 14. The outer peripheral wall of the sealing member 3 is provided with an annular groove 33 extending in the circumferential direction thereof, and the annular groove 33 is fitted with the annular projection 12. As shown in fig. 2, in the first assembled state, the first connection surface 221 is attached to the electrical connector 5, and the first connection surface 221 and the second connection surface 211 are respectively located on two sides of the top cover sheet 1. Lower plastic part 4 laminating is on the lower surface of top cap piece 1, and the laminating of electric connector 5 is plastic part 4 under, and links to each other with terminal utmost point post 2. The terminal post 2 has a first assembly state and a second assembly state, as shown in fig. 2, in the first assembly state, the first connection surface 221 is attached to the electrical connector 5, the first connection surface 221 and the lower plastic part 4 are flush with the surface deviating from the top cover plate 1, and the first connection surface 221 and the second connection surface 211 are respectively located on two sides of the top cover plate 1. As shown in fig. 4, in the second assembled state, the second connection surface 211 is attached to the electrical connector 5, and the first connection surface 221 and the second connection surface 211 are respectively located on two sides of the top cover sheet 1. The second connecting surface 211 is flush with the surface of the lower plastic part 4 departing from the top cover plate 1. The pole assembling hole 31 of the sealing member 3 matched with the terminal pole 2 is a step hole and comprises a first hole 311 and a second hole 312, wherein the diameter of the first hole 311 is smaller than that of the second hole 312; in the first assembled state, the first hole 311 is fitted to the portion of the seal bead 23 that is not bent, and the second hole 312 is fitted to the pole plate portion 22; in the second assembled state, the first hole 311 is fitted to the portion of the sealing flange 23 which is not bent, and the second hole 312 is fitted to the portion of the sealing flange 23 which is bent.
It should be added that, in this embodiment, the terminal post 2 is made of a metal plate, wherein the positive terminal post 2 is made of an aluminum plate, the negative terminal post 2 is made of a copper-aluminum composite plate, the terminal post 2, the sealing member 3, the sealing flange 23 of the terminal post 2 is located at a position before the top cover plate 1 is assembled, the assembly can be smoothly installed in place at this time, the terminal post 2 can be assembled with the sealing member 3 first and then assembled with the top cover plate 1, after the assembly is in place, the flange operation is performed on the sealing flange 23, so that the sealing flange 23 can be turned over, the sealing flange 23 after the turning compresses the sealing member 3, the top cover plate 1 is tightly wrapped, and the sealing effect is realized. The sealing element 3 is made of high polymer materials, the sealing materials have good compression and sealing performance and can be prepared by injection molding, and the sealing element 3 can be assembled with the top cover plate 1 firstly and then the terminal pole 2 is arranged in the sealing element 3; also can be earlier with terminal utmost point post 2 assembly back, in the top cap piece 1 of repacking, treat the sealed turn-ups 23 upset back of terminal utmost point post 2, sealing member 3 is oppressed, realizes sealed effect. Top cap piece 1 comprises the metal material, can be that the panel of aluminium material or other metal materials forms through the preparation of blanking mode, when top cap piece 1 and terminal utmost point post 2, sealing member 3 assembly back, terminal utmost point post 2's sealed turn-ups 23 is overturned, terminal utmost point post 2 oppression sealing member 3, top cap piece 1 is wrapped up by sealing member 3 after the oppression, terminal utmost point post 2 has also realized the insulating parcel to top cap piece 1, the assembly is accomplished, lower plastic adopts macromolecular material, preparation forms through injection moulding process.
The top cover assembly of the present embodiment is installed in the following two ways:
the first assembled state is as follows:
s1: sleeving the sealing element 3 on the terminal post 2;
s2: the pre-assembled terminal post 2 and the sealing element 3 are loaded into the post fitting hole 11 from the lower part (namely, the side close to the battery core) of the top cover plate 1;
s3: placing the assembled combination of the terminal post 2, the sealing element 3 and the top cover plate 1 on a fixed table, enabling the sealing element 3 to abut against the matching protrusion 13 of the top cover plate 1, enabling the lower surface of the terminal post 2 to be supported, and pressing the sealing flanging 23 of the terminal post 2 from top to bottom;
s4: the compressed sealing flange 23 and the top cover plate 1 are in a parallel state or are reversely buckled on the matching bulge 13 on the top cover plate 1, so that a further sealing effect is realized
S5: the lower plastic part 4 and the top cover plate 1 are combined together in an ultrasonic welding mode and the like.
The second assembled state is as follows:
s1: sleeving the sealing element 3 on the terminal post 2;
s2: the pre-assembled terminal post 2 and the sealing element 3 are loaded into the post fitting hole 11 from the upper part (namely, the side far away from the battery core) of the top cover plate 1;
s3: placing the assembled combination of the terminal post 2, the sealing element 3 and the top cover plate 1 on a fixed table, enabling the sealing element 3 to abut against the annular bulge 12 of the top cover plate 1, enabling the upper surface of the terminal post 2 to be supported, and pressing the sealing flanging 23 of the terminal post 2 from bottom to top;
s4: the compressed sealing flanging 23 and the top cover plate 1 are in a parallel state, or are reversely buckled on the matching bulge 13 on the top cover plate 1, so that a further sealing effect is realized;
s5: the lower plastic part 4 and the top cover plate 1 are combined together in an ultrasonic welding mode and the like.
The top cover assembly of the present embodiment has the following advantages:
firstly, the method comprises the following steps: under the condition that the top cover component does not occupy pole piece filling in the battery core, the terminal overall height is reduced by utilizing the vertical space of the pole matching hole 11 of the top cover plate 1, so that the overall height of the battery core is reduced, and the volume energy density of a module or a battery pack is favorably improved;
secondly, the method comprises the following steps: the electric connector 5 can adopt a planar design, so that the problems of cost rise and development period caused by punch forming of a three-dimensional structure are solved.
The invention also discloses a battery, which comprises the top cover assembly and the shell, wherein the battery core is arranged in the shell, and the top cover assembly is buckled on the shell.
The battery of the invention has the top cover assembly, so that the inner space of the shell is abundant, a battery core with a higher size can be placed, and the energy density of the battery is higher.
In the description herein, references to the description of "some embodiments," "other embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.
Claims (10)
1. A header assembly, comprising:
the top cover plate (1), the top cover plate (1) is provided with a pole matching hole (11);
the terminal post (2) is arranged in the post fitting hole (11) in a penetrating mode and is provided with a first connecting surface (221) and a second connecting surface (211) which are arranged oppositely;
the sealing element (3) is sleeved on the terminal post (2) and clamped between the terminal post (2), the inner peripheral wall of the post fitting hole (11) and the upper surface of the top cover plate (1);
the lower plastic part (4), the lower plastic part (4) is attached to the lower surface of the top cover plate (1);
the electric connecting piece (5) is attached to the lower plastic piece (4) and connected with the terminal pole (2); wherein:
the first connection surface (221) and the second connection surface (211) are respectively located on both sides of the top cover sheet (1).
2. Cap assembly according to claim 1, characterized in that the terminal post (2) has a first and a second assembled state; wherein:
in the first assembly state, the first connecting surface (221) and the surface of the lower plastic part (4) departing from the top cover sheet (1) are arranged in a flush manner, and the first connecting surface (221) is attached to the electric connecting part (5);
the second assembled state, second be connected face (211) with down plastic part (4) deviate from the surface of top cover piece (1) flushes the setting, just second be connected face (211) with electric connector (5) laminating.
3. The top cover assembly according to claim 1, wherein the terminal pole (2) comprises a pole part (21) and a pole plate part (22) which are connected, a bendable sealing flange (23) which is arranged at a distance from the pole part (21) is arranged on the pole plate part (22), and the bent sealing flange (23) is pressed on the sealing element (3).
4. Cap assembly according to claim 3, wherein the sealing bead (23) extends along the circumferential direction of the pole part (21).
5. The header assembly of claim 3, wherein the post fitting hole (31) of the seal member (3) to which the terminal post (2) is fitted is a stepped hole and includes a first hole (311) and a second hole (312), the first hole (311) having a diameter smaller than that of the second hole (312).
6. The top cover assembly according to claim 1, wherein the top cover sheet (1) is provided with a matching protrusion (13) on the upper surface thereof, the matching protrusion (13) is provided with a receiving groove (14), the peripheral wall of the sealing member (3) is provided with a matching flange (32) extending along the circumferential direction thereof, and the matching flange (32) is matched in the receiving groove (14).
7. The top cover assembly according to claim 1, wherein the inner side wall of the pole fitting hole (11) is provided with annular protrusions (12) arranged at intervals along the circumferential direction of the pole fitting hole, the outer circumferential wall of the sealing member (3) is provided with annular grooves (33) arranged along the circumferential direction of the sealing member in an extending manner, and the annular grooves (33) are matched with the annular protrusions (12).
8. A method of assembling the header assembly of any of claims 1-7, comprising:
sleeving the sealing element (3) on the terminal pole (2),
the terminal pole (2) and the sealing element (3) which are assembled in advance are installed into the pole fitting hole (11) from the upper part or the lower part of the top cover plate (1);
and connecting the lower plastic part (4) to the bottom of the top cover plate (1), and installing the electric connector (5) below the terminal pole (2).
9. The assembly method of the top cover assembly according to claim 8, wherein after the fitting of the terminal post (2) and the seal member (3) in advance into the post fitting hole (11) from above or below the top cover sheet (1), further comprises:
after the terminal pole (2) is assembled, the sealing element (2) and the top cover piece (1) are placed on a fixed workbench, so that the upper surface/the lower surface of the terminal pole (2) is supported, and the sealing flanging (23) of the terminal pole (2) is pressed from top to bottom so as to be pressed on the sealing element (3).
10. A battery comprising the cap assembly of any one of claims 1-7 and a housing, wherein a cell is disposed in the housing, and the cap assembly is snap-fitted to the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210002860.3A CN114361667A (en) | 2022-01-04 | 2022-01-04 | Top cover assembly, assembly method of top cover assembly and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210002860.3A CN114361667A (en) | 2022-01-04 | 2022-01-04 | Top cover assembly, assembly method of top cover assembly and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114361667A true CN114361667A (en) | 2022-04-15 |
Family
ID=81105988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210002860.3A Pending CN114361667A (en) | 2022-01-04 | 2022-01-04 | Top cover assembly, assembly method of top cover assembly and battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114361667A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115458875A (en) * | 2022-11-11 | 2022-12-09 | 深圳海润新能源科技有限公司 | Manufacturing method of top cover assembly, top cover assembly and energy storage device |
| CN115498332A (en) * | 2022-10-10 | 2022-12-20 | 中天储能科技有限公司 | Cover plate assembly and energy storage device |
| CN116581447A (en) * | 2023-07-12 | 2023-08-11 | 深圳海辰储能控制技术有限公司 | End cover assembly, energy storage device and electric equipment |
| WO2023173753A1 (en) * | 2022-06-02 | 2023-09-21 | 湖北亿纬动力有限公司 | Battery, battery module and battery pack |
-
2022
- 2022-01-04 CN CN202210002860.3A patent/CN114361667A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023173753A1 (en) * | 2022-06-02 | 2023-09-21 | 湖北亿纬动力有限公司 | Battery, battery module and battery pack |
| CN115498332A (en) * | 2022-10-10 | 2022-12-20 | 中天储能科技有限公司 | Cover plate assembly and energy storage device |
| CN115498332B (en) * | 2022-10-10 | 2024-03-26 | 中天储能科技有限公司 | Cover plate assembly and energy storage device |
| CN115458875A (en) * | 2022-11-11 | 2022-12-09 | 深圳海润新能源科技有限公司 | Manufacturing method of top cover assembly, top cover assembly and energy storage device |
| CN116581447A (en) * | 2023-07-12 | 2023-08-11 | 深圳海辰储能控制技术有限公司 | End cover assembly, energy storage device and electric equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114361667A (en) | Top cover assembly, assembly method of top cover assembly and battery | |
| CN102832370B (en) | Charge storage element and manufacture method thereof | |
| CN110034250B (en) | Sealed battery, battery pack, method for manufacturing sealed battery, and method for manufacturing battery pack | |
| US10637035B2 (en) | Energy storage device | |
| US20140227587A1 (en) | Battery and method of manufacturing the same | |
| JP6037196B2 (en) | Method for manufacturing power storage element | |
| CN218677502U (en) | Welding structure of power battery pole | |
| CN217405565U (en) | Top cover assembly and battery | |
| CN115377577B (en) | End cover assembly, battery sealing method, battery module and electric equipment | |
| CN114156579A (en) | Battery top cap subassembly and battery | |
| CN216850106U (en) | Top cover assembly and battery module | |
| CN109755422B (en) | Power battery top cover component, power battery and battery module | |
| CN216311920U (en) | Composite pole, top cover and battery | |
| CN115347287B (en) | Battery top cover, battery and battery manufacturing method | |
| CN217691396U (en) | Cladding formula structure and battery top cap subassembly of battery top cap | |
| CN215911490U (en) | Battery core cover plate of power battery and power battery with same | |
| CN215644688U (en) | Battery cover plate assembly and battery | |
| CN214957095U (en) | Power battery | |
| CN114628822A (en) | High-performance battery cover plate and battery | |
| CN220474743U (en) | Spherical battery | |
| CN217881806U (en) | Pole, cover plate and battery | |
| CN218215480U (en) | Laminated button battery with two-layer ruffle structure | |
| CN217934000U (en) | Cover plate and battery | |
| CN219873770U (en) | Battery shell structure and battery | |
| CN220456523U (en) | Button cell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |