CN111129374A - Full utmost point ear assembly structure of lithium cell apron - Google Patents

Full utmost point ear assembly structure of lithium cell apron Download PDF

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Publication number
CN111129374A
CN111129374A CN202010028659.3A CN202010028659A CN111129374A CN 111129374 A CN111129374 A CN 111129374A CN 202010028659 A CN202010028659 A CN 202010028659A CN 111129374 A CN111129374 A CN 111129374A
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China
Prior art keywords
cover plate
insulating pad
positive
lithium battery
negative electrode
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Pending
Application number
CN202010028659.3A
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Chinese (zh)
Inventor
王文林
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Suzhou Juhong Communication Computer Technology Co ltd
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Suzhou Juhong Communication Computer Technology Co ltd
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Application filed by Suzhou Juhong Communication Computer Technology Co ltd filed Critical Suzhou Juhong Communication Computer Technology Co ltd
Priority to CN202010028659.3A priority Critical patent/CN111129374A/en
Publication of CN111129374A publication Critical patent/CN111129374A/en
Priority to DE202020106535.1U priority patent/DE202020106535U1/en
Priority to DE102020130057.3A priority patent/DE102020130057A1/en
Priority to KR1020200156467A priority patent/KR102461030B1/en
Priority to JP2020193162A priority patent/JP6987371B2/en
Pending legal-status Critical Current

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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
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
    • H01M50/176—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H01M50/148—Lids or covers characterised by their shape
    • H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/184—Sealing members characterised by their shape or structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/186—Sealing members characterised by the disposition of the sealing members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/186—Sealing members characterised by the disposition of the sealing members
    • H01M50/188—Sealing members characterised by the disposition of the sealing members the sealing members being arranged between the lid and terminal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/342—Non-re-sealable arrangements
    • H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
    • 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
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/471—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof
    • H01M50/474—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof characterised by their position inside the cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/471—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof
    • H01M50/477—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof 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
    • H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
    • 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
    • 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
    • H01M50/533—Electrode connections inside a battery casing characterised by the shape of the leads or tabs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/586—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries inside the batteries, e.g. incorrect connections of electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
    • H01M50/593—Spacers; Insulating plates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00—Safety devices for primary or secondary batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00—Safety devices for primary or secondary batteries
    • H01M2200/20—Pressure-sensitive devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
    • H01M50/557—Plate-shaped terminals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Gas Exhaust Devices For Batteries (AREA)
  • Secondary Cells (AREA)

Abstract

The invention discloses a lithium battery cover plate full-lug assembly structure which comprises a cover plate with two openings, a lower insulating pad, positive and negative electrode pins, a sealing ring and an upper insulating pad, wherein the cover plate is provided with the positive and negative electrodes, the two openings are arranged at the positions of the positive and negative electrodes, the lower insulating pad is arranged at the bottom of the cover plate, the positive and negative electrode pins penetrate through the openings and are hung on the lower insulating pad, the sealing ring is sleeved between the circumferential direction of the positive and negative electrode pins and the lower; the open circumferential closing-in processing card of the cover plate is clamped and fastened by the insulating pad circumferentially. The invention realizes accurate tab assembly, stable internal resistance and no charging, discharging and heating problems.

Description

Full utmost point ear assembly structure of lithium cell apron
Technical Field
The invention belongs to the technical field of lithium ion batteries, and particularly relates to a full tab assembly structure of a lithium battery cover plate.
Background
When the lithium battery tab is assembled, the functions are unstable due to the fact that all accessories cannot be effectively and accurately matched; after the sealing structure is attached and installed, risks still exist; because the number of assembled parts is large, the internal resistance is unstable due to the combination of parts, and the charging and discharging heating problem of the lithium battery cover plate is caused; when the cover plate is matched with the electrode to contact, the discharge arc phenomenon is generated by the gap when the lithium battery cover plate is charged and discharged.
Disclosure of Invention
The invention aims to solve the technical problems and provides a full tab assembly structure of a lithium battery cover plate, so that the tab assembly is accurate, the internal resistance is stable, and the problems of charging, discharging and heating are solved. In order to achieve the purpose, the technical scheme of the invention is as follows:
the lithium battery cover plate full-lug assembly structure comprises a cover plate with two openings at positive and negative electrode positions, a lower insulating pad arranged at the bottom of the cover plate, positive and negative electrode pins which penetrate through the openings and are hung on the lower insulating pad, a sealing ring sleeved between the circumferential direction of the positive and negative electrode pins and the lower insulating pad, and an upper insulating pad sleeved on the circumferential direction of the positive and negative electrode pins and jointed with the sealing ring; the open circumferential closing-in processing card of the cover plate is clamped and fastened by the insulating pad circumferentially.
Specifically, the positive and negative electrode pins comprise an L-shaped body and an annular flange arranged on the circumferential direction of the top of the body, and the surfaces of the positive and negative electrode pins are exposed out of the open position.
Specifically, the apron is rectangular shape plate body structure, and bilateral symmetry is equipped with uncovered on the apron, and open interior week is equipped with the annular of invagination, and the flange sets up with the annular position is corresponding.
Specifically, lower insulating pad is rectangular shape cell body structure, and bilateral symmetry is equipped with the brace table that cup joints with uncovered correspondence in the cell body of lower insulating pad, is equipped with the through-hole that runs through in the brace table.
Specifically, be equipped with in lower insulating pad and the apron and run through the explosion-proof hole that corresponds, the explosion-proof hole position screens in the apron is equipped with the rupture membrane, and the top of rupture membrane is connected with the face subsides that the explosion-proof hole was gone up to the lid.
Specifically, the sealing washer is annular structure, and a sealing washer partly is set up on the brace table, and its another part is arranged in the annular, and the bottom of flange and the corresponding laminating of sealing washer are sealed the setting.
Specifically, the circumference of the upper insulating pad is of an annular step structure, the bottom of the upper insulating pad is attached to the sealing ring, and the inner periphery of the upper insulating pad is attached to the outer periphery of the flange in a sealing mode.
Specifically, the inner periphery of the opening is attached to the outer periphery of the upper insulating pad in a sealing mode.
Specifically, the uncovered position upper cover of apron is equipped with the ring of hugging closely that exposes positive negative electrode pin surface, and the inner wall of hugging closely the ring compresses tightly the uncovered lateral wall of laminating and goes up the insulating pad lateral wall.
Compared with the prior art, the lithium battery cover plate full-lug assembling structure has the beneficial effects that:
all the components are accurately and effectively matched and connected, so that the working stability of the lithium battery is realized; the sealing ring is matched with the upper insulating pad and the lower insulating pad to realize the reliability of sealing performance and avoid the risk of liquid leakage; the positive and negative electrode pins and the cover plate are arranged in a spaced connection mode, so that the problem of unstable internal resistance caused by multi-component assembly is avoided, and the charging and discharging heating temperature value in the lithium battery cover plate is reduced; the upper insulating pad and the lower insulating pad isolate the cover plate from the positive and negative electrode pins, so that the discharge arc phenomenon of the lithium battery cover plate caused by gaps is prevented during charging and discharging; the clasping ring can be omitted according to requirements, and the cost is reduced.
Drawings
FIG. 1 is a schematic illustration of an explosive structure according to an embodiment of the present invention;
FIG. 2 is a partially enlarged view of the lower insulating pad of the present embodiment;
FIG. 3 is a schematic view of a part of the present embodiment after assembly;
FIG. 4 is a sectional view showing a part of the structure of the present embodiment after assembly;
FIG. 5 is a schematic sectional view of the rupture disk of this embodiment;
the figures in the drawings represent:
1 opening, 11 cover plates, 12 ring grooves, 2 lower insulating pads, 21 supporting tables, 22 through holes, 3 positive and negative electrode pins, 31 bodies, 32 flanges, 4 sealing rings, 5 upper insulating pads, 6 explosion-proof holes, 61 explosion-proof films, 62 surface stickers and 7 clamping rings.
Detailed Description
The technical solutions in the embodiments of the present invention are described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
Example (b):
referring to fig. 1-5, the present embodiment is a lithium battery cover plate full tab assembly structure, including a cover plate 11 having two openings 1 at positive and negative electrode positions, a lower insulating pad 2 disposed at the bottom of the cover plate 11, positive and negative electrode pins 3 hung on the lower insulating pad 2 through the openings 1, a sealing ring 4 sleeved between the peripheries of the positive and negative electrode pins 3 and the lower insulating pad 2, and an upper insulating pad 5 sleeved between the peripheries of the positive and negative electrode pins 3 and attached to the sealing ring 4; the opening 1 of the cover plate 11 is circumferentially closed up to clamp the upper insulating pad 5 to be circumferentially fastened.
The positive and negative electrode pins 3 include an L-shaped body 31 and an annular flange 32 provided on the top circumference of the body 31. The surface of the positive and negative electrode pins 3 is exposed at the position of the opening 1.
The cover plate 11 is a strip-shaped plate body structure, openings 1 are symmetrically arranged on two sides of the cover plate 11, and the inner periphery of each opening 1 is provided with an inward-recessed ring groove 12. The flange 32 is positioned to correspond to the position of the ring groove 12.
Lower insulating pad 2 is rectangular shape cell body structure, and bilateral symmetry is equipped with the brace table 21 that cup joints with uncovered 1 correspondence in the cell body of lower insulating pad 2, is equipped with the through-hole 22 that runs through in the brace table 21.
The top structure of the positive and negative electrode pins 3 is any one of circular, oval, square or polygonal. The opening 1 and the through hole 22 are arranged corresponding to the top structure shape of the positive and negative electrode pins 3.
Be equipped with in lower insulating pad 2 and the apron 11 and run through corresponding explosion-proof hole 6, the 6 position screens in the explosion-proof hole in the apron 11 are equipped with rupture membrane 61, and rupture membrane 61's top is connected with the face subsides 62 that cover explosion-proof hole 6 on the apron 11.
The sealing ring 4 is of an annular structure, one part of the sealing ring 4 is arranged on the supporting platform 21, and the other part of the sealing ring 4 is arranged in the annular groove 12. The bottom of the flange 32 is in abutting sealing arrangement with the sealing ring 4.
The circumference of the upper insulating pad 5 is of an annular step structure, the bottom of the upper insulating pad 5 is attached to the sealing ring 4, and the inner circumference of the upper insulating pad 5 is attached to the outer circumference of the flange 32 in a sealing mode.
The inner periphery of the opening 1 is attached to the outer periphery of the upper insulating pad 5 in a sealing mode.
The butt joint of the cover plate 11 and the lower insulating pad 2 is realized, the sealing ring 4 is plugged into the opening 1, the upper insulating pad 5 is sleeved on the flange 32, the positive and negative electrode pins 3 penetrate the opening 1 and the through hole 22, the flange 32 is arranged on the sealing ring 4, the top circumference of the opening 1 and the connection part of the upper insulating pad 5 circumference are closed up and compressed, and an annular groove 12 structure is formed in the opening 1.
The uncovered 1 position upper cover of apron 11 is equipped with the ring 7 of hugging closely that exposes 3 surfaces of positive and negative electrode pin, and the inner wall of hugging closely the ring 7 compresses tightly the uncovered 1 lateral wall of laminating and goes up 5 lateral walls of insulating pad.
When the embodiment is applied, all the components are accurately and effectively matched and connected, so that the working stability of the lithium battery is realized; the sealing ring 4 is matched with the upper insulating pad 5 and the lower insulating pad 2 in structure, so that the reliability of sealing performance is realized, and the liquid leakage risk is avoided; the positive and negative electrode pins 3 are connected with the cover plate 11 at intervals, so that the problem of unstable internal resistance caused by multi-component assembly is avoided, and the charging, discharging and heating temperature value in the lithium battery cover plate 11 is reduced; the upper insulating pad 5 and the lower insulating pad 2 isolate the cover plate 11 from the positive and negative electrode pins 3, so that the discharge arc phenomenon of the lithium battery cover plate caused by gaps is prevented during charging and discharging; the clasping ring 7 can be omitted according to requirements, and the cost is reduced.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.

Claims (9)

1. Lithium battery cover plate full-lug assembly structure, its characterized in that: the device comprises a cover plate with two openings at the positions of positive and negative electrodes, a lower insulating pad arranged at the bottom of the cover plate, positive and negative electrode pins which penetrate through the openings and are hung on the lower insulating pad, a sealing ring sleeved between the circumferential direction of the positive and negative electrode pins and the lower insulating pad, and an upper insulating pad sleeved on the circumferential direction of the positive and negative electrode pins and jointed with the sealing ring; the open circumferential closing-in processing card of the cover plate is clamped and fastened by the insulating pad circumferentially.
2. The full tab assembly structure of the lithium battery cover plate as claimed in claim 1, wherein: the positive and negative electrode pins comprise L-shaped bodies and annular flanges arranged on the circumferential direction of the tops of the bodies, and the surfaces of the positive and negative electrode pins are exposed out of the open positions.
3. The full tab assembly structure of the lithium battery cover plate as claimed in claim 2, wherein: the cover plate is of a long strip plate body structure, openings are symmetrically formed in two sides of the cover plate, sunken annular grooves are formed in the inner peripheries of the openings, and the flanges and the annular grooves are arranged correspondingly.
4. The full tab assembly structure of the lithium battery cover plate as claimed in claim 3, wherein: the lower insulating pad is of a strip-shaped groove body structure, supporting tables which are correspondingly sleeved with openings are symmetrically arranged on two sides in the groove body of the lower insulating pad, and through holes which penetrate through the supporting tables are formed in the supporting tables.
5. The full tab assembly structure of the lithium battery cover plate as claimed in claim 1, wherein: the explosion-proof hole that runs through the correspondence is equipped with in lower insulating pad and the apron, and the explosion-proof hole position screens in the apron is equipped with the rupture membrane, and the top of rupture membrane is connected with the face subsides that cover closed explosion-proof hole on the apron.
6. The full tab assembly structure of the lithium battery cover plate as claimed in claim 4, wherein: the sealing ring is of an annular structure, one part of the sealing ring is arranged on the supporting table, the other part of the sealing ring is arranged in the annular groove, and the bottom of the flange is correspondingly attached and sealed with the sealing ring.
7. The full tab assembly structure of the lithium battery cover plate as claimed in claim 2, wherein: the circumference of the upper insulating pad is of an annular step structure, the bottom of the upper insulating pad is attached to the sealing ring, and the inner periphery of the upper insulating pad is attached to the outer periphery of the flange in a sealing mode.
8. The full tab assembly structure of the lithium battery cover plate as claimed in claim 7, wherein: the inner periphery of the opening is attached to the outer periphery of the upper insulating pad in a sealing mode.
9. The full tab assembly structure of the lithium battery cover plate as claimed in claim 1, wherein: the uncovered position upper cover of apron is equipped with the ring of hugging closely that exposes positive negative electrode pin surface, and the inner wall of hugging closely the ring compresses tightly the uncovered lateral wall of laminating and goes up the insulating pad lateral wall.
CN202010028659.3A 2020-01-11 2020-01-11 Full utmost point ear assembly structure of lithium cell apron Pending CN111129374A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN202010028659.3A CN111129374A (en) 2020-01-11 2020-01-11 Full utmost point ear assembly structure of lithium cell apron
DE202020106535.1U DE202020106535U1 (en) 2020-01-11 2020-11-13 Mounting structure for a full flap of a lithium battery cover plate
DE102020130057.3A DE102020130057A1 (en) 2020-01-11 2020-11-13 Mounting structure for a full flap of a lithium battery cover plate
KR1020200156467A KR102461030B1 (en) 2020-01-11 2020-11-20 Full lug assembly structure for lithium battery cover plate
JP2020193162A JP6987371B2 (en) 2020-01-11 2020-11-20 Full tab assembly structure of lithium battery cover plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010028659.3A CN111129374A (en) 2020-01-11 2020-01-11 Full utmost point ear assembly structure of lithium cell apron

Publications (1)

Publication Number Publication Date
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JP6987371B2 (en) 2021-12-22
DE202020106535U1 (en) 2020-12-07

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