WO2021228165A1 - Battery structure having cover cap support - Google Patents

Battery structure having cover cap support Download PDF

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Publication number
WO2021228165A1
WO2021228165A1 PCT/CN2021/093454 CN2021093454W WO2021228165A1 WO 2021228165 A1 WO2021228165 A1 WO 2021228165A1 CN 2021093454 W CN2021093454 W CN 2021093454W WO 2021228165 A1 WO2021228165 A1 WO 2021228165A1
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WO
WIPO (PCT)
Prior art keywords
battery
cap
housing
bracket
explosion
Prior art date
Application number
PCT/CN2021/093454
Other languages
French (fr)
Chinese (zh)
Inventor
刘承香
温松江
Original Assignee
路华置富电子(深圳)有限公司
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Filing date
Publication date
Application filed by 路华置富电子(深圳)有限公司 filed Critical 路华置富电子(深圳)有限公司
Publication of WO2021228165A1 publication Critical patent/WO2021228165A1/en

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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
    • H01M50/152—Lids or covers characterised by their shape for cells having curved cross-section, e.g. round or elliptic
    • 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
    • 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
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
    • 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
    • H01M50/375—Vent means sensitive to or responsive to temperature
    • 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

Definitions

  • the invention relates to the field of batteries, in particular to a battery structure with a cap bracket.
  • a battery is a device that can convert chemical energy into electrical energy. With the advancement of science and technology, people's lives are becoming more and more intelligent and convenient. The emergence of various household appliances has reduced people's labor.
  • the battery is one of the essential configurations for the battery life of electrical equipment.
  • the cell and the cap are separated by the rolling groove process, which is cumbersome and the production efficiency is low.
  • the overall structure of the battery processed by the rolling groove process occupies a large volume, but the inside of the battery case is used for fixing
  • the space of the battery cell is small, the battery structure design is unreasonable, the internal space of the shell cannot be fully utilized, and only small-capacity battery roll cores can be placed, and the overall utility of the battery structure is low. Therefore, it is necessary to provide a battery structure with a cap bracket to solve the above technical problems.
  • the present invention provides a battery structure with a cap holder.
  • a holder for supporting the cap is built in the housing.
  • One side of the extension of the holder is connected with the inner wall of the housing, and the other side is in contact with and insulated from the outer wall of the cap; the support part of the holder It is used to support the battery cap and separate the battery cell from the cap, which solves the problem that the battery structure with the upper cap bracket in the prior art has a structure design that is not reasonable enough, and the internal space capacity of the battery is small due to the rolling groove process. problem.
  • a battery structure with a cap bracket which includes:
  • a housing for installing components is a hollow cylindrical structure with an open end;
  • the electric core is arranged in the casing for providing electric energy
  • a cap is arranged at the opening at one end of the housing and is connected to the battery core, and the cap is used to seal the opening of the housing and lead out the electrodes of the battery core;
  • a bracket is provided inside the housing, and the bracket is used to support the cap and space the cap from one end of the battery core;
  • the bracket includes:
  • An extension part which is provided at one end of the bracket, and one side of the extension part is connected with the housing;
  • a support portion which is provided at the other end of the bracket, the support portion extends along the inside of the housing and is used to support the cap;
  • the reinforcing part is arranged at the support part and is used to strengthen the rigidity of the support.
  • the thickness is greater than the thickness of the extension portion, and the thickness of the reinforcement portion is greater than the thickness of the support portion;
  • the cap includes:
  • the metal connecting piece is arranged at one end of the opening of the battery casing and connected to the positive electrode tab of the battery;
  • An insulating plastic part which is arranged around the periphery of the metal connector, and is used to insulate and protect the metal connector from the inner wall of the battery casing;
  • a connecting part is provided at the center of the metal connector, and the connecting part is connected to one end of the positive electrode tab of the battery; the side of the connecting part away from the battery is provided with an explosion-proof structure for discharge The high-pressure gas generated by the battery cell.
  • the present invention also provides a battery structure with a cap bracket, which includes:
  • a housing for installing components is a hollow cylindrical structure with an open end;
  • the electric core is arranged in the casing for providing electric energy
  • the cap is arranged at the opening at one end of the casing, and is used to seal the opening of the casing, and is connected with the battery core, and is used to lead out the electrodes of the battery core;
  • a bracket is provided inside the housing, and the bracket is used to support the cap and space the cap from one end of the battery core.
  • the present invention has the beneficial effects: the battery structure with the cap holder of the present invention is provided with a holder for supporting the cap inside the casing, which supports the cap and separates the cap from the battery core.
  • This structure It not only simplifies the assembly process of the battery and improves the overall efficiency of battery production; but also optimizes the structure of the shell and makes full use of the internal space of the shell, so that the shell can contain large-capacity batteries, increase the battery capacity, and improve The practicality of the battery structure is improved.
  • Fig. 1 is a perspective view of a first embodiment of a battery structure with a cap holder according to the present invention.
  • Fig. 2 is a cross-sectional view of the first embodiment of the battery structure with a cap holder according to the present invention.
  • FIG. 3 is an enlarged schematic diagram of a partial structure at A in FIG. 2.
  • FIG. 4 is an exploded view of the cross-sectional structure of the first embodiment of the battery structure with a cap holder according to the present invention.
  • Fig. 5 is a schematic structural view of the first embodiment of the battery structure with a cap holder according to the present invention, before the casing is stamped to form a sealing structure.
  • FIG. 6 is a schematic view of the structure of the insulating plastic part before the casing of the first embodiment of the battery structure with a cap holder according to the present invention is stamped to form a sealing structure.
  • Fig. 7 is an enlarged schematic diagram of the structure at B in Fig. 6.
  • FIG. 8 is a perspective view of a second cap structure of the first embodiment of the battery structure with cap holder of the present invention.
  • FIG. 9 is a cross-sectional view of the second cap structure of the first embodiment of the battery structure with cap holder of the present invention.
  • FIG. 10 is a cross-sectional view of a second cap structure of the first embodiment of the battery structure with cap holder of the present invention.
  • Fig. 11 is a perspective view of a second embodiment of the battery structure with a cap holder according to the present invention.
  • Fig. 12 is a structural cross-sectional view of the second embodiment of the battery structure with a cap holder according to the present invention.
  • Fig. 13 is an enlarged schematic diagram of the structure at C in Fig. 12.
  • FIG. 14 is an explosion-proof view of the cross-sectional structure of the second embodiment of the battery structure with a cap holder according to the present invention.
  • FIG. 15 is a perspective view of a second cap structure of the second embodiment of the battery structure with cap holder of the present invention.
  • 16 is a cross-sectional view of a second cap structure of the second embodiment of the battery structure with cap holder of the present invention.
  • Fig. 17 is an enlarged schematic diagram of the cap structure in Fig. 16.
  • Fig. 18 is a perspective view of a third embodiment of the battery structure with a cap holder according to the present invention.
  • Fig. 19 is a bottom view of the third embodiment of the battery structure with a cap holder according to the present invention.
  • FIG. 20 is a cross-sectional view of the third embodiment of the battery structure with a cap holder according to the present invention.
  • FIG. 21 is an enlarged schematic diagram of a partial structure of FIG. 20.
  • Fig. 22 is an exploded cross-sectional view of the third embodiment of the battery structure with a cap holder according to the present invention.
  • FIG. 23 is a schematic cross-sectional view of the second cap structure in the third embodiment of the battery structure with cap holder of the present invention.
  • FIG. 24 is an enlarged schematic diagram of the structure at D in FIG. 23.
  • Reference signs of the first embodiment housing 11, sealing structure 111, bracket 112, extension portion 1121, support portion 1122, reinforcement portion 1123, bottom plate 113, battery cell 12, positive pole tab 121, negative pole tab 122, first The insulating sheet 123, the second insulating sheet 124, the cap 13, the metal connecting piece 131, the connecting portion 1311, the explosion-proof groove 1311a, the insulating plastic piece 132, the first end 1321, the intermediate connecting portion 1322, the retaining rib 13211, the second End 1323, sealing rib 13231;
  • the second structure of the cap the cap 23, the metal connecting piece 231, the connecting portion 2311, the first groove 2311a, the first vent channel 2311b, the safety valve metal cover 2312, the heat-sensitive hot melt adhesive 2313.
  • Reference signs of the second embodiment housing 31, sealing structure 311, bracket 312, extension portion 3121, support portion 3122, reinforcement portion 3123, bottom plate 313, battery core 32, positive pole tab 321, negative pole tab 322, first The insulating sheet 323, the second insulating sheet 324, the cap 33, the metal connecting piece 331, the connecting portion 3311, the explosion-proof groove 3311a, and the insulating plastic piece 332;
  • the second structure of the cap the cap 43, the metal connecting piece 431, the connecting portion 4311, the second groove 4311a, the second vent channel 4311b, the safety valve metal cover 4312, the thermal hot melt adhesive 4313.
  • Reference signs of the third embodiment housing 51, sealing structure 511, bracket 512, extension portion 5121, support portion 5122, reinforcement portion 5123, bottom plate 513, third groove 5131, third air escape passage 5132, safety valve cover plate 514, hot melt material 515, battery cell 52, positive electrode tab 521, negative electrode tab 522, cap 53;
  • the second structure of the bracket the bracket 61, the extension portion 6121, the support portion 6125, and the reinforcement portion 6126.
  • first and second in the terms of the present invention are only for descriptive purposes, and cannot be understood as indicating or implying relative importance, and not as a restriction on the order of sequence.
  • FIG. 1 is a perspective view of a first embodiment of the battery structure with a cap holder of the present invention
  • Figure 2 is a view of the first embodiment of the battery structure with a cap holder of the present invention
  • FIG. 3 is an enlarged schematic diagram of the partial structure at A in FIG. 2.
  • the battery structure includes a housing 11, a battery cell 12, and a cap 13, wherein the housing 11 is used for mounting components, and the housing 11 is one end.
  • a sealing structure 111 is provided at the opening at one end of the housing 11, and the sealing structure 111 is used to limit the position of the outer side of the cap 13; the housing 11 is provided with a bracket 112 for supporting the cap 13, and the bracket 112 supports the cap 13 and connects the cap 13. It is spaced apart from one end of the battery core 12.
  • Figure 2 is a cross-sectional view of the first embodiment of the battery structure with a cap holder according to the present invention
  • Figure 4 is an exploded cross-sectional structure of the first embodiment of the battery structure with a cap holder according to the present invention picture.
  • the structure of the cell 12 in this embodiment is described:
  • the battery cell 12 includes a positive electrode tab 121 and a negative electrode tab 122; wherein, the positive electrode tab 121 of the battery cell 12 is connected to the battery cap 13 and the negative electrode tab 122 of the battery cell 12 is connected to the housing 11.
  • the housing 11 in this embodiment is a steel housing, and the housing 11 includes a bottom plate 113 with a cap 13.
  • the battery core 12 in this embodiment is formed by stacking and winding a positive pole piece, an insulating diaphragm, and a negative pole piece in order to form a spiral columnar structure.
  • a first insulating sheet 123 is provided between the cell 12 and the bottom plate 113.
  • One end of the negative electrode tab 122 is connected to the negative pole piece of the cell 12, and the other end of the negative electrode tab 122 penetrates the first insulating sheet 123 and extends along the inner side of the bottom plate 113. ;
  • the negative electrode tab 122 and the housing 11 are welded from the outside to the inside.
  • a second insulating sheet 124 is provided between the battery cell 12 and the cap 13, one end of the positive electrode tab 121 is connected to the positive electrode sheet of the battery cell 12, and the other end of the positive electrode tab 121 penetrates the first insulating sheet 123, and Along the inner side of the connecting portion 1311 and extend; the second insulating sheet 124 in this embodiment is provided with a number of heat dissipation holes for heat dissipation of the battery core 12.
  • FIG. 2 and FIG. 3 Please refer to FIG. 2 and FIG. 3 to describe the structure of the bracket 112 in this embodiment:
  • the bracket 112 provided in this embodiment includes an extension portion 1121 and a support portion 1122; the extension portion 1121 is disposed at one end of the housing 11 away from the opening, the long side of the extension portion 1121 is parallel to the axis of the housing 11, and one side of the extension portion 1121 is parallel to The inner wall of the casing 11 is connected, and the other side of the extension portion 1121 is in contact with and insulated from the outer wall of the cell 12; One end of the opening extends along the inside of the casing 11 for supporting the battery cover 13.
  • the bracket 112 has a cylindrical structure and is sleeved with the battery core 12; the structure of the bracket 112 is simple, which improves the assembly efficiency of battery products.
  • the angle between the support portion 1122 and the extension portion 1121 ranges from 85° to 95°.
  • the angle between the support portion 1122 of the bracket 112 and the extension portion 1121 in this embodiment is a right angle, which is convenient for supporting the cap 13.
  • the bracket 112 further includes a reinforcement portion 1123 for strengthening the rigidity of the bracket 112.
  • One end of the reinforcement portion 1123 is connected to one end of the support portion 1122, and the other end of the reinforcement portion 1123 is connected to the extension portion 1121.
  • the thickness of the reinforcement portion 1123 is greater than that of the support portion.
  • the thickness of the portion 1122, and the thickness of the reinforcement portion 1123 is greater than the thickness of the extension portion 1121.
  • the cap 13 includes a metal connecting piece 131 and an insulating plastic piece 132.
  • the metal connecting piece 131 is arranged at the opening of the housing 11 and connected to the positive electrode tab 121 of the battery cell 12, and the metal connecting piece 131 is used to lead out The positive electrode of the battery cell 12;
  • the insulating plastic piece 132 is arranged around the periphery of the metal connecting piece 131 for insulating and protecting the metal connecting piece 131 from the inner wall of the housing 11; wherein the metal connecting piece 131 includes a connecting portion 1311, a connecting portion 1311 It is located at the center of the metal connecting piece 131, and the connecting portion 1311 is connected to the positive electrode tab 121 of the battery cell 12.
  • the insulating plastic part 132 in this embodiment includes a first end 1321, a second end 1323 and an intermediate connecting portion 1322.
  • the first end 1321 is disposed at one end of the insulating plastic part 132, and is used to isolate and insulate the metal connecting part 131 away from the side of the cell 12 from the sealing structure 111; in this embodiment, the first end 1321 of the insulating plastic part 132 is made of metal
  • the connecting piece 131 is isolated and insulated from the sealing structure 111 on the side away from the battery core 12.
  • the second end 1323 is disposed at the other end of the insulating plastic part 132 and extends along the surface of the supporting part 1122, and is used to isolate the other side of the metal connecting part 131 from the supporting part 1122; in this embodiment, the second end of the insulating plastic part 132
  • the end portion 1323 is used to isolate the inner side of the metal connection piece 131 from the support portion 1122
  • the intermediate connection portion 1322 is arranged in the middle of the insulating plastic piece 132, and is used to connect the first end portion 1321 and the second end portion 1323, and the intermediate connection portion 1322 is arranged around the periphery of the metal connecting member 131 to isolate and insulate the periphery of the metal connecting member 131 from the inner wall of the housing 11.
  • the first end 1321 of the insulating plastic part 132 is provided with a locking reinforcement rib on a side close to the metal connecting part 131, and the locking reinforcement rib is used to increase the strength of the insulating plastic part 132.
  • the second end 1323 of the insulating plastic part 132 is provided with at least one sealing rib 13231 on the side close to the metal connecting part 131.
  • the sealing rib 13231 is used for sealingly connecting the second end 1323 with the inner side of the metal connecting part 131 to lift The tightness of the cap 13 is improved.
  • Figure 5 is a structural schematic diagram of the first embodiment of the battery structure with a cap bracket of the present invention before the shell is stamped to form a sealing structure;
  • the structure of the insulating plastic part is schematic;
  • FIG. 7 is an enlarged schematic view of the structure at B in FIG. 6.
  • the structure of the insulating plastic part 132 before the shell 11 is not punched to form the sealing structure 111 in this embodiment is described in detail:
  • the first end 1321 of the insulating plastic part 132 before deformation extends along the long side of the intermediate connecting portion 1322; at this time, the thickness of the first end 1321 is between 0.1 mm and 1 mm; The thickness of the second end 1323 before deformation is between 0.1 mm and 1 mm; and the thickness of the first end 1321 of the insulating plastic part 132 before deformation in this embodiment is less than or equal to the thickness of the second end 1322.
  • the locking rib structure before deformation is 13211 as shown in the figure
  • the sealing rib structure before deformation is 13231 as shown in the figure.
  • the width of the locking rib 13211 is between 0.1mm and 0.5mm
  • the thickness of the locking rib 13211 is between 0.05mm and 0.2mm
  • the width of the sealing rib 13231 is between Between 0.1mm and 0.5mm
  • the thickness of the sealing rib 13231 is between 0.03mm and 0.2mm.
  • the size of the insulating plastic part 132 in this embodiment is limited, which not only facilitates the injection and demolding of the insulating plastic part 132 during the production process, but also facilitates the subsequent assembly of the cap 13 and improves the sealing of the overall structure of the battery product. And stability.
  • the outer surface of the metal connector 131 away from the battery core 12 is provided with an explosion-proof structure.
  • the explosion-proof structure in this embodiment is the first type of explosion-proof structure provided in this embodiment, and it includes an explosion-proof groove 1311a, and the explosion-proof groove 1311a is arranged at the connecting portion 1311 of the metal connector 131 from the outside to the inside.
  • the explosion-proof groove 1311a is formed by stamping from the outside to the inside by the metal connecting piece 131; the shape of the explosion-proof groove 1311a can be a ring, a "U" shape or a linear structure.
  • the shape of the explosion-proof groove 1311a in this embodiment is preferably a "U"-shaped structure.
  • the length of the cross-section at the opening of the explosion-proof groove 1311a is greater than or equal to the length of the cross-section at the bottom end of the explosion-proof groove 1311a.
  • the cross-sectional shape of the explosion-proof groove 1311a may be a "V" shape, a "U” shape, a rectangle with an open top, or an inverted trapezoid structure.
  • the cross-sectional structure of the explosion-proof groove 1311a in this embodiment is preferably an inverted trapezoid structure.
  • the thickness of the connecting portion 1311 in the area where the explosion-proof groove 1311a is not provided is between 0.2 mm and 1 mm, and the thickness of the connecting portion 1311 in the area where the explosion-proof groove 1311a is provided is between 0.02 mm and 0.2 mm. between.
  • reinforcing ribs are provided on the outer side of the metal connecting piece 131 in this embodiment to increase the strength of the metal connecting piece 131.
  • the ratio of the height of the battery to the diameter of the battery is less than or equal to 1, so as to meet the requirements of some button batteries on the market.
  • a bracket 112 for supporting the cap 13 is built in the housing 11, which eliminates the rolling groove process in the battery manufacturing process; thus simplifies the battery assembly process, improves the overall efficiency of battery production, and reduces The cost of battery production.
  • This structure not only avoids the battery leakage caused by the rolling groove process during the battery processing, and the problem of the inner wall of the rolling groove squeezing the battery cell; it also does not need to limit the thickness of the side wall of the steel shell, which improves the applicability of the battery structure Therefore, the shell in this embodiment can be a thin plate with a thickness of less than or equal to 0.15 mm.
  • Figure 8 is a perspective view of a second cap structure of the first embodiment of the battery structure with a cap holder of the present invention
  • Figure 9 is a perspective view of the battery structure with a cap holder of the present invention
  • FIG. 10 is a cross-sectional view of the second cap structure of the first embodiment of the battery structure with a cap holder of the present invention.
  • the second structure of the cap in this embodiment is provided as follows:
  • the cap 23 includes a metal connecting piece 231 and an insulating plastic piece 232.
  • the metal connecting piece 231 includes a connecting portion 2311 for connecting with the positive pole piece 221 of the cell 22; the metal connecting piece 231
  • the outer surface away from the battery core 22 is provided with an explosion-proof structure.
  • the explosion-proof structure in this embodiment includes a safety valve metal cover 2312 and a hot melt material.
  • the hot-melt material is preferably heat-sensitive hot-melt adhesive 2313.
  • the metal connecting piece 231 is provided with a first groove 2311a located outside the connecting portion 2311, a safety valve metal cover 2312 is provided in the first groove 2311a, and the safety valve metal cover 2312 is made of a first heat-sensitive material and a metal
  • the connecting piece 231 is connected; the connecting portion 2311 of the metal connecting piece 231 is provided with a first vent channel 2311b, the first vent channel 2311b communicates the first groove 2311a with the inside of the battery case 21, and is used to discharge the high-pressure gas generated by the battery cell 22 .
  • the depth of the first groove 2311a is between 0.2 mm and 1 mm.
  • the cross-sectional shape of the first groove 2311a in this embodiment is circular, elliptical or polygonal, and the cross-sectional shape of the safety valve metal cover 2312 matches the cross-sectional shape of the first groove 2311a.
  • first groove 2311a in this embodiment may be provided with a flange for limiting the position of the safety valve metal cover 2312.
  • the safety valve metal cover 2312 fixes and seals the first air vent channel 2311b through a hot melt material.
  • the surface temperature of the battery core 22 rises to the melting temperature range of the heat-sensitive hot melt adhesive 2313, and the heat-sensitive hot melt adhesive 2313 loses its bonding ability; the safety valve metal cover 2312 is pushed open by the high-pressure gas inside the housing 21; The high-pressure gas inside the battery is discharged, and the internal pressure of the battery cell 22 is reduced until it returns to a normal state. Therefore, unsafe accidents such as battery fire or explosion are avoided, and the safety of the battery is improved.
  • the explosion-proof structure of this embodiment can be recycled, which improves the safety of the battery and prolongs the service life of the battery.
  • the explosion-proof structure incorporates the safety valve metal cover 2312 and the heat-sensitive material inside the cap.
  • Figure 11 is a perspective view of a second embodiment of the battery structure with a cap holder according to the present invention
  • Figure 12 is a structural cross-sectional view of the second embodiment of the battery structure with a cap holder according to the present invention
  • 14 is an explosion-proof view of the cross-sectional structure of the second embodiment of the battery structure with a cap holder according to the present invention.
  • the battery structure with the cap holder of the present invention is provided as follows:
  • the battery structure includes a housing 31, a battery cell 32, and a cap 33; the housing 31 is used for mounting components, and the housing 31 is a hollow cylindrical structure with an open end; the battery cell 32 is arranged in the housing 31 to provide electrical energy
  • the cap 33 is provided at the opening at one end of the housing 31, used to seal the opening of the housing 31, and lead out the positive electrode of the cell 32.
  • a sealing structure 311 is provided at the opening at one end of the housing 31, and the sealing structure 311 is used to limit the position of the outer side of the cap 33;
  • the housing 31 is provided with a bracket 312 for supporting the cap 33, and the bracket 312 supports the cap 32 and connects the cap 33. It is spaced apart from one end of the battery core 32.
  • FIG. 13 is an enlarged schematic diagram of the structure at C in FIG. 12.
  • the structure of the bracket 312 in this embodiment is described:
  • the bracket 312 provided in this embodiment includes an extension part 3121 and a support part 3122; the extension part 3121 is provided at one end of the housing 31 near the opening, the long side of the extension part 3121 is parallel to the axial direction of the housing 31, and one side of the extension part 3121 is parallel to The inner wall of the housing 31 is connected, and the other side of the extension part 3121 is in contact with and insulated from the outer wall of the cap 33; the support part 3122 is located at the other end of the bracket, and the support part 3122 is connected to the end of the extension part 3121 away from the opening of the housing 31 and runs along the housing 31.
  • the inner extension is used to support the battery cover 33.
  • the bracket 312 has a cylindrical structure, and the bracket 312 is sleeved with the insulating plastic part 322.
  • the angle between the support portion 3122 and the extension portion 3121 ranges from 85° to 95°.
  • the included angle between the support portion 3122 of the bracket 312 and the extension portion 3121 in this embodiment is a right angle, which facilitates the support of the cap 33 and makes full use of the internal space of the housing 31.
  • the bracket 312 further includes a reinforcement part 3123 for strengthening the rigidity of the bracket 312.
  • One end of the reinforcement part 3123 is connected to one end of the support part 3122, and the other end of the reinforcement part 3123 is connected to the extension part 3121.
  • the thickness of the reinforcement part 3123 is greater than that of the support part 3122.
  • the thickness of the portion 3122, and the thickness of the reinforcement portion 3123 is greater than the thickness of the extension portion 3121.
  • the casing 31 in this embodiment is a steel casing 31, which includes a bottom plate 313 with a cap 33; the battery core 32 is sequentially superimposed and wound to form a spiral columnar structure by a positive pole piece, an insulating diaphragm, and a negative pole piece.
  • the battery cell 32 in this embodiment further includes a positive electrode tab 321 and a negative electrode tab 2322, and the positive electrode tab 321 of the battery cell 32 is connected to the battery cap 33, and the negative electrode tab 322 of the battery cell 32 is connected to the housing 31.
  • a first insulating sheet 323 is provided between the battery core 32 and the bottom plate 313, one end of the negative electrode tab 322 is connected to the negative electrode of the battery core 32, and the other end of the negative electrode tab 322 penetrates the first insulating sheet 323 and extends along the inner side of the bottom plate 313;
  • the negative electrode tab 322 and the housing 31 are welded from the outside to the inside.
  • a second insulating sheet 324 is provided between the battery cell 32 and the cap 33, one end of the positive electrode tab 321 is connected to the positive electrode sheet of the battery cell 32, and the other end of the positive electrode tab 321 penetrates the first insulating sheet 323, and Along the inner side of the connecting portion 3311 and extend; the second insulating sheet 324 in this embodiment is provided with a plurality of heat dissipation holes for heat dissipation of the battery core 32.
  • the cap 33 in this embodiment includes a metal connecting piece 331 and an insulating plastic piece 332.
  • the metal connecting piece 331 is disposed at the opening of the housing 31 and connected to the positive electrode tab 321 of the battery cell 32 ,
  • the metal connecting piece 331 is used to lead out the positive electrode of the battery core 32;
  • the insulating plastic piece 332 is arranged around the periphery of the metal connecting piece 331 to insulate and protect the metal connecting piece 331 from the inner wall of the casing 31.
  • the insulating plastic part 332 in this embodiment includes a first end portion 3321, a second end portion 3323 and an intermediate connecting portion 3322.
  • the first end 3321 of the insulating plastic part 332 is provided with a locking reinforcement rib on a side close to the metal connecting part 331, and the locking reinforcement rib is used to increase the strength of the insulating plastic part 322.
  • the second end 3323 of the insulating plastic part 332 is provided with at least one sealing rib 33231 on the side close to the metal connecting part 331, and the sealing rib 33231 is used for sealingly connecting the second end 3323 with the inner side of the metal connecting part 331.
  • the outer surface of the metal connector 331 away from the battery core 32 is provided with an explosion-proof structure.
  • the first structure of the explosion-proof structure provided in this embodiment includes an explosion-proof groove 3311a, and the explosion-proof groove 3311a is provided at the connecting portion 3311 of the metal connecting member 331 from the outside to the inside.
  • the explosion-proof groove 3311a in the present invention may have a ring-shaped, "U"-shaped or linear structure.
  • the explosion-proof groove 3311a in this embodiment is preferably a "U"-shaped structure.
  • the length of the cross section at the opening of the explosion-proof groove 3311a is greater than or equal to the length of the cross-section at the bottom end of the explosion-proof groove; structure.
  • the cross-sectional shape of the explosion-proof groove 3311a in this embodiment adopts an inverted trapezoidal structure.
  • the thickness of the connecting portion 3311 area where the explosion-proof groove 3311a is not provided is between 0.2 mm and 1 mm, and the thickness of the connecting portion 3311 where the explosion-proof groove 3311a is provided is between 0.02 mm and 0.2 mm. between.
  • the metal connecting piece 331 in this embodiment is provided with a reinforcing rib on the outside to increase the strength of the metal connecting piece 331.
  • the casing 31 of the battery structure of this embodiment has a built-in bracket 312 for supporting the cap 23, the support portion 3122 of the bracket 312 supports the cap 33, and one side of the extension portion 3121 is connected to the casing 31; and The other side of the extension part 3121 is in contact with the outer ring of the insulating plastic part 332 and is insulated.
  • the structure of the bracket 312 of this embodiment is simplified, which reduces the space occupied by the bracket inside the casing; and the bracket 312 is sleeved around the cap 33, and the inside of the casing 31 can accommodate batteries with a larger diameter, which increases the battery capacity.
  • FIG. 15 is a perspective view of a second cap structure of the second embodiment of the battery structure with a cap holder of the present invention
  • FIG. 16 is a second cap structure of the battery structure with a cap holder of the present invention
  • FIG. 17 is an enlarged schematic view of the cap structure in FIG. 16.
  • the second structure of the cap in the second embodiment of the present invention is provided as follows:
  • the cap 43 includes a metal connecting piece 431 and an insulating plastic piece 432.
  • the metal connecting piece 431 includes a connecting portion 4311 for connecting with the positive pole piece 321 of the battery cell 32; the metal connecting piece 431
  • the outer surface away from the battery core 32 is provided with an explosion-proof structure.
  • the explosion-proof structure in this embodiment includes a safety valve cover 4312 and a hot-melt material, and the hot-melt material is preferably a heat-sensitive hot-melt adhesive 4313.
  • the metal connecting piece 431 is provided with a second groove 4311a outside the connecting portion 4311, a safety valve metal cover 4312 is provided in the second groove 4311a, and the safety valve metal cover 4312 is connected to The metal connecting piece 431 is connected.
  • the connecting portion 4311 of the metal connecting piece 431 is provided with a second bleed channel 4311b.
  • the second bleed channel 4311b communicates the second groove 4311a with the inside of the battery case 31 and is used to discharge the high voltage generated by the battery cell 32 gas.
  • the depth of the second groove 4311a is between 0.2 mm and 1 mm.
  • the cross-sectional shape of the second groove 4311a is circular, elliptical or polygonal, and the cross-sectional shape of the safety valve metal cover 4312 matches the cross-sectional shape of the second groove 4311a.
  • the second explosion-proof structure in this embodiment can be reused, which improves the practicability of the battery structure.
  • the safety valve metal cover 4312 when the battery cell 32 is in a normal working state, the safety valve metal cover 4312 is fixedly sealed with the second bleed channel 4311b through the heat-sensitive hot melt adhesive 4313.
  • the surface temperature of the battery cell 32 rises to the melting temperature range of the heat-sensitive hot melt adhesive 4313, and the heat-sensitive hot melt adhesive 4313 loses its bonding ability; the safety valve metal cover 4312 is pushed open by the high-pressure gas inside the housing 31; The high-pressure gas inside the battery is discharged, and the internal pressure of the battery cell 32 is reduced until it returns to a normal state. Therefore, unsafe accidents such as battery fire or explosion are avoided, and the safety of the battery is improved.
  • a recyclable explosion-proof structure is also added, which improves the safety of the battery and prolongs the service life of the battery.
  • the safety valve metal cover 4312 and the heat-sensitive material are built into the cap.
  • Figure 18 is a perspective view of a third embodiment of the battery structure with a cap holder of the present invention
  • Figure 19 is a bottom view of the third embodiment of the battery structure with a cap holder of the present invention
  • Figure 20 is a cross-sectional view of a third embodiment of the battery structure with a cap holder according to the present invention.
  • the third embodiment of the battery structure with a cap holder according to the present invention is provided as follows:
  • the battery structure in this embodiment includes a casing 51, a battery cell 52, and a cap 53; the casing 51 is used for mounting components, and the casing 51 is a hollow cylindrical structure with an open end; the battery core 52 is arranged in the casing 51, It is used to provide electric power; the cap 53 is arranged at the opening at one end of the casing 51 and is used to seal the opening of the casing 51.
  • a sealing structure 511 is provided at the opening at one end of the housing 51, and the sealing structure 511 is used to limit the position of the outer side of the cap 53; the housing 51 is provided with a bracket 512 for supporting the cap 53. The bracket 512 is used to connect the cap 53 with the battery cell. 52 is spaced at one end.
  • FIG. 21 is an enlarged schematic diagram of a partial structure of FIG. 20.
  • the housing 51 includes a bottom plate 513 opposite to the cap 53.
  • the bottom end of the bottom plate 513 is provided with a third groove 5131, and the outer surface of the bottom plate 513 is provided with a third groove 5131; the bottom plate 513 is provided with a third vent channel 5132.
  • the third bleed channel 5132 connects the third groove 5131 with the inside of the housing 51 and is used to discharge the high-pressure gas generated by the cell 52.
  • the third groove 5131 on the bottom plate 513 of the housing 51 is provided with a second safety valve cover plate 514, and the second safety valve cover plate 514 is connected to the bottom plate 513 by a hot melt material.
  • the hot melt material in this embodiment is preferably a heat-sensitive hot melt adhesive 515.
  • FIG. 20 is a cross-sectional view of the third embodiment of the battery structure with a cap holder of the present invention
  • FIG. 22 is an exploded cross-sectional view of the third embodiment of the battery structure with a cap holder of the present invention.
  • the first structure of the bracket in this embodiment is described:
  • the bracket 512 provided in this embodiment includes an extension portion 5121 and a support portion 5122; the extension portion 5121 is provided at one end of the housing 51 away from the opening, the long side of the extension portion 5121 is parallel to the axis of the housing 51, and one side of the extension portion 5121 is parallel to The inner wall of the casing 51 is connected, and the other side of the extension portion 5121 is in contact with and insulated from the outer wall of the cell 52; the support portion 5122 is connected to one end of the extension portion 5121 close to the opening of the casing 51, and the support portion 5122 is located at the bracket 512 close to the casing 51 One end of the opening extends along the inside of the casing 51 and is used to support the battery cover 53.
  • the bracket 512 has a cylindrical structure and is sleeved on the battery core 52. This structure facilitates the assembly of battery products and improves the stability of the bracket 512 inside the battery.
  • the angle between the support portion 5122 and the extension portion 5121 ranges from 85° to 95°.
  • the angle between the support portion 5122 of the bracket 512 and the extension portion 5121 in this embodiment is a right angle.
  • the bracket 512 further includes a reinforcement part 5123 for strengthening the rigidity of the bracket 512.
  • One end of the reinforcement part 5123 is connected to one end of the support part 5122, and the other end of the reinforcement part 5123 is connected to the extension part 5121.
  • the thickness of the reinforcement part 5123 is greater than that of the support part 5121.
  • the thickness of the portion 5122, and the thickness of the reinforcement portion 5123 is greater than the thickness of the extension portion 5121.
  • the battery structure of this embodiment is provided with a reusable explosion-proof structure at the bottom end of the casing 51, which improves the safety of the battery; when the battery is depressurized, the battery does not need Reserve extra space in the height direction; and the explosion-proof structure of the safety valve does not occupy the space of the finished cap, so that the thickness of the finished cap is small, which is convenient for the production and assembly of the battery.
  • FIG. 23 is a schematic cross-sectional view of the second cap structure in the third embodiment of the battery structure with cap holder of the present invention
  • FIG. 24 is an enlarged schematic view of the structure at D in FIG. 23.
  • the second structure of the bracket in this embodiment is described: the bracket 612 provided in this embodiment includes an extension part 6121 and a support part 6122; 51 is axially parallel, and one side of the extension portion 6121 is connected to the inner wall of the housing 51, and the other side of the extension portion 6121 is in contact with and insulated from the outer wall of the cap 53; the support portion 6122 is located at the other end of the bracket, and the support portion 6122 and the extension portion 6121 are away from the housing
  • One end of the opening of 51 is connected and extends along the inside of the casing 51 for supporting the battery cover 53.
  • the bracket 612 has a cylindrical structure. It is effective and improves the stability of the bracket 612 inside the battery.
  • the angle between the support portion 6122 and the extension portion 6121 ranges from 85° to 95°.
  • the angle between the support portion 6122 of the bracket 612 and the extension portion 6121 in this embodiment is a right angle.
  • the bracket 612 further includes a reinforcement part 6123 for strengthening the rigidity of the bracket 612.
  • One end of the reinforcement part 6123 is connected to one end of the support part 6122, and the other end of the reinforcement part 6123 is connected to the extension part 6121.
  • the thickness of the reinforcement part 6123 is greater than that of the support part 6122.
  • the thickness of the portion 6122, and the thickness of the reinforcement portion 6123 is greater than the thickness of the extension portion 6121.
  • the battery structure of this embodiment is provided with a reusable explosion-proof structure at the bottom end of the housing 51, which improves the safety of the battery;
  • the thickness of the finished cap is small, which is convenient for the production and assembly of the battery.
  • the housing 51 in this embodiment has a built-in bracket 512 for supporting the cap 53, and the bracket 512 is sleeved around the cap 51.
  • the inside of the housing 31 can accommodate cells with a larger diameter, which increases the battery capacity.

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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)
  • Gas Exhaust Devices For Batteries (AREA)

Abstract

Provided in the present invention is a battery structure having a cover cap support, comprising a casing body, a battery cell, and a cover cap; wherein the casing body is used for installing components, and the casing body is a hollow cylindrical structure that is open at one end; the battery cell is arranged within the casing body, and is used for providing electrical energy; and the cover cap is arranged at the opening at one end of the casing body, and is used for sealing the opening of the casing body, and lead out an electrode of the battery cell, wherein a support used for supporting the cover cap is provided at an inner part of the casing body. The battery structure having a cover cap support of the present invention increases the total capacity of the battery structure, increasing battery practicality.

Description

具有盖帽支架的电池结构Battery structure with cap bracket 技术领域Technical field
本发明涉及电池领域，特别涉及一种具有盖帽支架的电池结构。The invention relates to the field of batteries, in particular to a battery structure with a cap bracket.
背景技术Background technique
电池是一种能将化学能转化成电能的装置。随着科技的进步，人们的生活越来越智能化和便捷化，各种家用电器的出现减少了人们的劳动量，而电池是电器设备续航必不可少的配置之一。A battery is a device that can convert chemical energy into electrical energy. With the advancement of science and technology, people's lives are becoming more and more intelligent and convenient. The emergence of various household appliances has reduced people's labor. The battery is one of the essential configurations for the battery life of electrical equipment.
现有电池的制作过程中，通过滚槽工艺将电芯与盖帽分隔，步骤繁琐，生产效率低下，而且通过滚槽工艺加工出来的电池整体结构占用的体积大，但是电池壳体内部用于固定电池电芯的空间小，电池结构设计不合理，壳体内部空间不能充分利用，只能放置小容量的电池卷芯，电池结构整体的实用性低。故需要提供一种具有盖帽支架的电池结构来解决上述技术问题。In the manufacturing process of the existing battery, the cell and the cap are separated by the rolling groove process, which is cumbersome and the production efficiency is low. Moreover, the overall structure of the battery processed by the rolling groove process occupies a large volume, but the inside of the battery case is used for fixing The space of the battery cell is small, the battery structure design is unreasonable, the internal space of the shell cannot be fully utilized, and only small-capacity battery roll cores can be placed, and the overall utility of the battery structure is low. Therefore, it is necessary to provide a battery structure with a cap bracket to solve the above technical problems.
发明内容Summary of the invention
本发明提供一种具有盖帽支架的电池结构，其在壳体内置用于支撑盖帽的支架，支架的延伸部一侧与壳体内壁连接，另一侧与盖帽外壁接触并绝缘；支架的支撑部用于支撑电池盖帽，并将电芯与盖帽间隔开，解决了现有技术中的具有盖帽上支架的电池结构多存在结构设计不够合理，由于滚槽工艺制作电池从而导致的电池内部空间容量小问题。The present invention provides a battery structure with a cap holder. A holder for supporting the cap is built in the housing. One side of the extension of the holder is connected with the inner wall of the housing, and the other side is in contact with and insulated from the outer wall of the cap; the support part of the holder It is used to support the battery cap and separate the battery cell from the cap, which solves the problem that the battery structure with the upper cap bracket in the prior art has a structure design that is not reasonable enough, and the internal space capacity of the battery is small due to the rolling groove process. problem.
为解决上述技术问题，本发明的技术方案为：一种具有盖帽支架的电池结构，其包括：In order to solve the above technical problems, the technical solution of the present invention is: a battery structure with a cap bracket, which includes:
壳体，用于安装部件，所述壳体为一端开口的中空筒状结构；A housing for installing components, the housing is a hollow cylindrical structure with an open end;
电芯，设置在壳体内，用于提供电能；以及The electric core is arranged in the casing for providing electric energy; and
盖帽，设置在所述壳体一端开口处，并与所述电芯连接，所述盖帽用于密封所述壳体的开口，并引出所述电芯的电极；A cap is arranged at the opening at one end of the housing and is connected to the battery core, and the cap is used to seal the opening of the housing and lead out the electrodes of the battery core;
其中，所述壳体内部设有支架，所述支架用于支撑所述盖帽，并将所述盖帽与所述电芯一端间隔开；Wherein, a bracket is provided inside the housing, and the bracket is used to support the cap and space the cap from one end of the battery core;
所述支架包括：The bracket includes:
延伸部，设置在所述支架一端，且所述延伸部一侧与所述壳体连接；An extension part, which is provided at one end of the bracket, and one side of the extension part is connected with the housing;
支撑部，设置在所述支架另一端，所述支撑部沿所述壳体内部延伸，用于支撑所述盖帽；以及A support portion, which is provided at the other end of the bracket, the support portion extends along the inside of the housing and is used to support the cap; and
加强部，设置在所述支架部位，用于加强所述支架的刚度，所述加强部一端与所述支撑部一端连接，所述加强部另一端与所述延伸部连接，所述加强部 的厚度大于所述延伸部的厚度，且所述加强部的厚度大于所述支撑部的厚度；The reinforcing part is arranged at the support part and is used to strengthen the rigidity of the support. The thickness is greater than the thickness of the extension portion, and the thickness of the reinforcement portion is greater than the thickness of the support portion;
所述盖帽包括：The cap includes:
金属连接件，设置在所述电池壳体的开口一端，并与所述电芯的正极极耳连接；以及，The metal connecting piece is arranged at one end of the opening of the battery casing and connected to the positive electrode tab of the battery; and,
绝缘塑胶件，环绕设置在所述金属连接件周边，用于将所述金属连接件与所述电池壳体的内壁绝缘防护；An insulating plastic part, which is arranged around the periphery of the metal connector, and is used to insulate and protect the metal connector from the inner wall of the battery casing;
其中，所述金属连接件中心处设有连接部，所述连接部与所述电芯的正极极耳一端连接；所述连接部远离所述电芯的一侧设有防爆结构，用于排出所述电芯产生的高压气体。Wherein, a connecting part is provided at the center of the metal connector, and the connecting part is connected to one end of the positive electrode tab of the battery; the side of the connecting part away from the battery is provided with an explosion-proof structure for discharge The high-pressure gas generated by the battery cell.
本发明还提供一种具有盖帽支架的电池结构，其包括：The present invention also provides a battery structure with a cap bracket, which includes:
壳体，用于安装部件，所述壳体为一端开口的中空筒状结构；A housing for installing components, the housing is a hollow cylindrical structure with an open end;
电芯，设置在壳体内，用于提供电能；以及The electric core is arranged in the casing for providing electric energy; and
盖帽，设置在所述壳体一端开口处，用于密封所述壳体的开口，并与所述电芯连接，用于引出所述电芯的电极；The cap is arranged at the opening at one end of the casing, and is used to seal the opening of the casing, and is connected with the battery core, and is used to lead out the electrodes of the battery core;
其中，所述壳体内部设有支架，所述支架用于支撑所述盖帽，并将所述盖帽与所述电芯一端间隔开。Wherein, a bracket is provided inside the housing, and the bracket is used to support the cap and space the cap from one end of the battery core.
本发明相较于现有技术，其有益效果为：本发明的具有盖帽支架的电池结构，通过壳体内部设有用于支撑盖帽的支架，将盖帽支撑，并将盖帽与电芯分隔，此结构不仅简化了电池的组装工艺，提高了电池生产的综合效率；而且优化了壳体的结构，充分利用了壳体的内部空间，使得壳体可以容纳大容量的电芯，增加电池的容量，提升了电池结构的实用性。Compared with the prior art, the present invention has the beneficial effects: the battery structure with the cap holder of the present invention is provided with a holder for supporting the cap inside the casing, which supports the cap and separates the cap from the battery core. This structure It not only simplifies the assembly process of the battery and improves the overall efficiency of battery production; but also optimizes the structure of the shell and makes full use of the internal space of the shell, so that the shell can contain large-capacity batteries, increase the battery capacity, and improve The practicality of the battery structure is improved.
附图说明Description of the drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面对实施例中所需要使用的附图作简单的介绍，下面描述中的附图仅为本发明的部分实施例相应的附图。In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the drawings that need to be used in the embodiments. The drawings in the following description are only corresponding to some embodiments of the present invention.的图。 The attached drawings.
图1为本发明的具有盖帽支架的电池结构的第一实施例的立体图。Fig. 1 is a perspective view of a first embodiment of a battery structure with a cap holder according to the present invention.
图2为本发明的具有盖帽支架的电池结构的第一实施例的截面图。Fig. 2 is a cross-sectional view of the first embodiment of the battery structure with a cap holder according to the present invention.
图3为图2的A处局部结构放大示意图。FIG. 3 is an enlarged schematic diagram of a partial structure at A in FIG. 2.
图4为本发明的具有盖帽支架的电池结构的第一实施例的截面结构爆炸图。4 is an exploded view of the cross-sectional structure of the first embodiment of the battery structure with a cap holder according to the present invention.
图5为本发明的具有盖帽支架的电池结构的第一实施例的壳体冲压形成封口结构前的结构示意图。Fig. 5 is a schematic structural view of the first embodiment of the battery structure with a cap holder according to the present invention, before the casing is stamped to form a sealing structure.
图6为本发明的具有盖帽支架的电池结构的第一实施例的壳体冲压形成封口结构前，绝缘塑胶件的结构示意图。6 is a schematic view of the structure of the insulating plastic part before the casing of the first embodiment of the battery structure with a cap holder according to the present invention is stamped to form a sealing structure.
图7为图6的B处结构放大示意图。Fig. 7 is an enlarged schematic diagram of the structure at B in Fig. 6.
图8为本发明的具有盖帽支架的电池结构的第一实施例的第二种盖帽结构立体图。FIG. 8 is a perspective view of a second cap structure of the first embodiment of the battery structure with cap holder of the present invention.
图9为本发明的具有盖帽支架的电池结构的第一实施例的第二种盖帽结构的截面图。9 is a cross-sectional view of the second cap structure of the first embodiment of the battery structure with cap holder of the present invention.
图10为本发明的具有盖帽支架的电池结构的第一实施例的第二种盖帽结构的截面图。10 is a cross-sectional view of a second cap structure of the first embodiment of the battery structure with cap holder of the present invention.
图11为本发明的具有盖帽支架的电池结构的第二实施例立体图。Fig. 11 is a perspective view of a second embodiment of the battery structure with a cap holder according to the present invention.
图12为本发明的具有盖帽支架的电池结构的第二实施例结构截面图。Fig. 12 is a structural cross-sectional view of the second embodiment of the battery structure with a cap holder according to the present invention.
图13为图12的C处结构放大示意图。Fig. 13 is an enlarged schematic diagram of the structure at C in Fig. 12.
图14为本发明的具有盖帽支架的电池结构的第二实施例截面结构防爆图。14 is an explosion-proof view of the cross-sectional structure of the second embodiment of the battery structure with a cap holder according to the present invention.
图15为本发明的具有盖帽支架的电池结构的第二实施例的第二种盖帽结构的立体图。15 is a perspective view of a second cap structure of the second embodiment of the battery structure with cap holder of the present invention.
图16为本发明的具有盖帽支架的电池结构的第二实施例的第二种盖帽结构的截面图。16 is a cross-sectional view of a second cap structure of the second embodiment of the battery structure with cap holder of the present invention.
图17为图16中的盖帽结构放大示意图。Fig. 17 is an enlarged schematic diagram of the cap structure in Fig. 16.
图18为本发明的具有盖帽支架的电池结构的第三实施例的立体图。Fig. 18 is a perspective view of a third embodiment of the battery structure with a cap holder according to the present invention.
图19为本发明的具有盖帽支架的电池结构的第三实施例的仰视图。Fig. 19 is a bottom view of the third embodiment of the battery structure with a cap holder according to the present invention.
图20为本发明的具有盖帽支架的电池结构的第三实施例的截面图。20 is a cross-sectional view of the third embodiment of the battery structure with a cap holder according to the present invention.
图21为图20的局部结构放大示意图。FIG. 21 is an enlarged schematic diagram of a partial structure of FIG. 20.
图22为本发明的具有盖帽支架的电池结构的第三实施例的截面爆炸图。Fig. 22 is an exploded cross-sectional view of the third embodiment of the battery structure with a cap holder according to the present invention.
图23为本发明的具有盖帽支架的电池结构的第三实施例中的第二种盖帽结构的截面示意图。FIG. 23 is a schematic cross-sectional view of the second cap structure in the third embodiment of the battery structure with cap holder of the present invention.
图24为图23的D处结构放大示意图。FIG. 24 is an enlarged schematic diagram of the structure at D in FIG. 23.
第一实施例附图标记：壳体11、封口结构111、支架112、延伸部1121、支撑部1122、加强部1123、底板113、电芯12、正极极耳121、负极极耳122、第一绝缘片123、第二绝缘片124、盖帽13、金属连接件131、连接部1311、防爆槽1311a、绝缘塑胶件132、第一端部1321、中间连接部1322、卡位加强筋13211、第二端部1323、密封筋13231；Reference signs of the first embodiment: housing 11, sealing structure 111, bracket 112, extension portion 1121, support portion 1122, reinforcement portion 1123, bottom plate 113, battery cell 12, positive pole tab 121, negative pole tab 122, first The insulating sheet 123, the second insulating sheet 124, the cap 13, the metal connecting piece 131, the connecting portion 1311, the explosion-proof groove 1311a, the insulating plastic piece 132, the first end 1321, the intermediate connecting portion 1322, the retaining rib 13211, the second End 1323, sealing rib 13231;
盖帽的第二种结构：盖帽23、金属连接件231、连接部2311、第一凹槽2311a、第一泄气通道2311b、安全阀金属盖2312、热敏热熔胶2313。The second structure of the cap: the cap 23, the metal connecting piece 231, the connecting portion 2311, the first groove 2311a, the first vent channel 2311b, the safety valve metal cover 2312, the heat-sensitive hot melt adhesive 2313.
第二实施例附图标记：壳体31、封口结构311、支架312、延伸部3121、支撑部3122、加强部3123、底板313、电芯32、正极极耳321、负极极耳322、第一绝缘片323、第二绝缘片324、盖帽33、金属连接件331、连接部3311、 防爆槽3311a、绝缘塑胶件332；Reference signs of the second embodiment: housing 31, sealing structure 311, bracket 312, extension portion 3121, support portion 3122, reinforcement portion 3123, bottom plate 313, battery core 32, positive pole tab 321, negative pole tab 322, first The insulating sheet 323, the second insulating sheet 324, the cap 33, the metal connecting piece 331, the connecting portion 3311, the explosion-proof groove 3311a, and the insulating plastic piece 332;
盖帽的第二种结构：盖帽43、金属连接件431、连接部4311、第二凹槽4311a、第二泄气通道4311b、安全阀金属盖4312、热敏热熔胶4313。The second structure of the cap: the cap 43, the metal connecting piece 431, the connecting portion 4311, the second groove 4311a, the second vent channel 4311b, the safety valve metal cover 4312, the thermal hot melt adhesive 4313.
第三实施例附图标记：壳体51、封口结构511、支架512、延伸部5121、支撑部5122、加强部5123、底板513、第三凹槽5131、第三泄气通道5132、安全阀盖板514、热熔材料515、电芯52、正极极耳521、负极极耳522、盖帽53；Reference signs of the third embodiment: housing 51, sealing structure 511, bracket 512, extension portion 5121, support portion 5122, reinforcement portion 5123, bottom plate 513, third groove 5131, third air escape passage 5132, safety valve cover plate 514, hot melt material 515, battery cell 52, positive electrode tab 521, negative electrode tab 522, cap 53;
支架的第二种结构：支架61、延伸部6121、支撑部6125、加强部6126。The second structure of the bracket: the bracket 61, the extension portion 6121, the support portion 6125, and the reinforcement portion 6126.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work shall fall within the protection scope of the present invention.
在图中，结构相似的单元是以相同标号表示。In the figure, units with similar structures are indicated by the same reference numerals.
本发明术语中的“第一”“第二”等词仅作为描述目的，而不能理解为指示或暗示相对的重要性，以及不作为对先后顺序的限制。The terms "first" and "second" in the terms of the present invention are only for descriptive purposes, and cannot be understood as indicating or implying relative importance, and not as a restriction on the order of sequence.
请参照图1、图2和图3，其中图1为本发明的具有盖帽支架的电池结构的第一实施例的立体图，图2为本发明的具有盖帽支架的电池结构的第一实施例的截面图，图3为图2的A处局部结构放大示意图。Please refer to Figures 1, 2 and 3, in which Figure 1 is a perspective view of a first embodiment of the battery structure with a cap holder of the present invention, and Figure 2 is a view of the first embodiment of the battery structure with a cap holder of the present invention Cross-sectional view, FIG. 3 is an enlarged schematic diagram of the partial structure at A in FIG. 2.
如下为本发明提供的一种能解决以上技术问题的具有盖帽支架的电池结构，该电池结构包括壳体11、电芯12以及盖帽13；其中壳体11用于安装部件，壳体11为一端开口的中空筒状结构；电芯12设置在壳体11内，用于提供电能；盖帽13设置在壳体11一端开口处，用于密封壳体11的开口。The following is a battery structure with a cap holder that can solve the above technical problems provided by the present invention. The battery structure includes a housing 11, a battery cell 12, and a cap 13, wherein the housing 11 is used for mounting components, and the housing 11 is one end. An open hollow cylindrical structure; the battery core 12 is arranged in the housing 11 to provide electric energy; the cap 13 is arranged at the opening at one end of the housing 11 to seal the opening of the housing 11.
其中，壳体11一端开口处设有封口结构111，封口结构111用于限定盖帽13外侧的位置；壳体11内部设有用于支撑盖帽13的支架112，支架112支撑盖帽13，并将盖帽13与电芯12一端间隔开。Wherein, a sealing structure 111 is provided at the opening at one end of the housing 11, and the sealing structure 111 is used to limit the position of the outer side of the cap 13; the housing 11 is provided with a bracket 112 for supporting the cap 13, and the bracket 112 supports the cap 13 and connects the cap 13. It is spaced apart from one end of the battery core 12.
请参照图2和图4，图2为本发明的具有盖帽支架的电池结构的第一实施例的截面图，图4为本发明的具有盖帽支架的电池结构的第一实施例的截面结构爆炸图。对本实施例中的电芯12结构进行阐述：Please refer to Figures 2 and 4. Figure 2 is a cross-sectional view of the first embodiment of the battery structure with a cap holder according to the present invention, and Figure 4 is an exploded cross-sectional structure of the first embodiment of the battery structure with a cap holder according to the present invention picture. The structure of the cell 12 in this embodiment is described:
本实施例中，电芯12包括正极极耳121和负极极耳122；其中，电芯12的正极极耳121与电池盖帽13连接，电芯12的负极极耳122与壳体11连接。In this embodiment, the battery cell 12 includes a positive electrode tab 121 and a negative electrode tab 122; wherein, the positive electrode tab 121 of the battery cell 12 is connected to the battery cap 13 and the negative electrode tab 122 of the battery cell 12 is connected to the housing 11.
本实施例中的壳体11为钢壳体，该壳体11包括与盖帽13的底板113。本实施例中的电芯12通过正极极片、绝缘隔膜以及负极极片依次叠加且绕卷形成螺旋柱状结构。电芯12与底板113之间设有第一绝缘片123，负极极耳122一端与电芯12的负极极片连接，负极极耳122另一端贯穿第一绝缘片123， 并沿底板113内侧延伸；本实施例中的负极极耳122与壳体11通过从外向内焊接。The housing 11 in this embodiment is a steel housing, and the housing 11 includes a bottom plate 113 with a cap 13. The battery core 12 in this embodiment is formed by stacking and winding a positive pole piece, an insulating diaphragm, and a negative pole piece in order to form a spiral columnar structure. A first insulating sheet 123 is provided between the cell 12 and the bottom plate 113. One end of the negative electrode tab 122 is connected to the negative pole piece of the cell 12, and the other end of the negative electrode tab 122 penetrates the first insulating sheet 123 and extends along the inner side of the bottom plate 113. ; In this embodiment, the negative electrode tab 122 and the housing 11 are welded from the outside to the inside.
本实施例中，电芯12与盖帽13之间设有第二绝缘片124，正极极耳121一端与电芯12的正极极片连接，正极极耳121另一端贯穿第一绝缘片123，并沿连接部1311内侧并延伸；本实施例中的第二绝缘片124上设有若干用于电芯12散热的散热孔。In this embodiment, a second insulating sheet 124 is provided between the battery cell 12 and the cap 13, one end of the positive electrode tab 121 is connected to the positive electrode sheet of the battery cell 12, and the other end of the positive electrode tab 121 penetrates the first insulating sheet 123, and Along the inner side of the connecting portion 1311 and extend; the second insulating sheet 124 in this embodiment is provided with a number of heat dissipation holes for heat dissipation of the battery core 12.
请参照图2和图3，对本实施例中的支架112结构进行阐述：Please refer to FIG. 2 and FIG. 3 to describe the structure of the bracket 112 in this embodiment:
本实施例提供的支架112包括延伸部1121和支撑部1122；延伸部1121设置在壳体11内部远离开口处一端，延伸部1121长边与壳体11轴向平行，且延伸部1121一侧与壳体11内壁连接，延伸部1121另一侧与电芯12外壁接触并绝缘；支撑部1122与延伸部1121靠近壳体11的开口处一端连接，且支撑部1122位于支架112靠近壳体11的开口处一端，且沿壳体11内部延伸，用于支撑电池盖帽13。The bracket 112 provided in this embodiment includes an extension portion 1121 and a support portion 1122; the extension portion 1121 is disposed at one end of the housing 11 away from the opening, the long side of the extension portion 1121 is parallel to the axis of the housing 11, and one side of the extension portion 1121 is parallel to The inner wall of the casing 11 is connected, and the other side of the extension portion 1121 is in contact with and insulated from the outer wall of the cell 12; One end of the opening extends along the inside of the casing 11 for supporting the battery cover 13.
本实施例中，支架112为筒状结构，且与电芯12套接；支架112的结构简单，提升了电池产品的组装效率。In this embodiment, the bracket 112 has a cylindrical structure and is sleeved with the battery core 12; the structure of the bracket 112 is simple, which improves the assembly efficiency of battery products.
本实施例中，支撑部1122与延伸部1121之间的夹角范围介于85°～95°之间。优选的，本实施例中支架112的支撑部1122与延伸部1121之间的夹角为直角，便于支撑盖帽13。In this embodiment, the angle between the support portion 1122 and the extension portion 1121 ranges from 85° to 95°. Preferably, the angle between the support portion 1122 of the bracket 112 and the extension portion 1121 in this embodiment is a right angle, which is convenient for supporting the cap 13.
本实施例中，支架112还包括加强部1123，用于加强支架112的刚度，加强部1123一端与支撑部1122一端连接，加强部1123另一端与延伸部1121连接，加强部1123的厚度大于支撑部1122的厚度，且加强部1123的厚度大于延伸部1121的厚度。In this embodiment, the bracket 112 further includes a reinforcement portion 1123 for strengthening the rigidity of the bracket 112. One end of the reinforcement portion 1123 is connected to one end of the support portion 1122, and the other end of the reinforcement portion 1123 is connected to the extension portion 1121. The thickness of the reinforcement portion 1123 is greater than that of the support portion. The thickness of the portion 1122, and the thickness of the reinforcement portion 1123 is greater than the thickness of the extension portion 1121.
结合图2和图4，对本实施例中的盖帽13进行阐述：With reference to Fig. 2 and Fig. 4, the cap 13 in this embodiment will be described:
本实施例中，盖帽13包括金属连接件131以及绝缘塑胶件132，金属连接件131设置在壳体11的开口处，并与电芯12的正极极耳121连接，金属连接件131用于引出电芯12的正极电极；绝缘塑胶件132环绕设置在金属连接件131的周边，用于将金属连接件131与壳体11的内壁绝缘防护；其中金属连接件131包括连接部1311，连接部1311位于金属连接件131中心处，且连接部1311与电芯12的正极极耳121连接。In this embodiment, the cap 13 includes a metal connecting piece 131 and an insulating plastic piece 132. The metal connecting piece 131 is arranged at the opening of the housing 11 and connected to the positive electrode tab 121 of the battery cell 12, and the metal connecting piece 131 is used to lead out The positive electrode of the battery cell 12; the insulating plastic piece 132 is arranged around the periphery of the metal connecting piece 131 for insulating and protecting the metal connecting piece 131 from the inner wall of the housing 11; wherein the metal connecting piece 131 includes a connecting portion 1311, a connecting portion 1311 It is located at the center of the metal connecting piece 131, and the connecting portion 1311 is connected to the positive electrode tab 121 of the battery cell 12.
结合图4，本实施例中的绝缘塑胶件132包括第一端部1321、第二端部1323以及中间连接部1322。其中第一端部1321设置在绝缘塑胶件132一端，用于将金属连接件131远离电芯12一侧与封口结构111隔离绝缘；本实施例中绝缘塑胶件132的第一端部1321将金属连接件131远离电芯12一侧与封口结构111隔离绝缘。第二端部1323设置在绝缘塑胶件132另一端，并沿支撑部1122表面延伸，用于将金属连接件131另一侧与支撑部1122隔离绝缘；本 实施例中绝缘塑胶件132的第二端部1323用于将金属连接件131内侧与支撑部1122隔离绝缘；中间连接部1322设置在绝缘塑胶件132中部，用于将第一端部1321和第二端部1323连接，且中间连接部1322环绕设置在金属连接件131周边，用于将金属连接件131周边与壳体11内壁隔离绝缘。With reference to FIG. 4, the insulating plastic part 132 in this embodiment includes a first end 1321, a second end 1323 and an intermediate connecting portion 1322. The first end 1321 is disposed at one end of the insulating plastic part 132, and is used to isolate and insulate the metal connecting part 131 away from the side of the cell 12 from the sealing structure 111; in this embodiment, the first end 1321 of the insulating plastic part 132 is made of metal The connecting piece 131 is isolated and insulated from the sealing structure 111 on the side away from the battery core 12. The second end 1323 is disposed at the other end of the insulating plastic part 132 and extends along the surface of the supporting part 1122, and is used to isolate the other side of the metal connecting part 131 from the supporting part 1122; in this embodiment, the second end of the insulating plastic part 132 The end portion 1323 is used to isolate the inner side of the metal connection piece 131 from the support portion 1122; the intermediate connection portion 1322 is arranged in the middle of the insulating plastic piece 132, and is used to connect the first end portion 1321 and the second end portion 1323, and the intermediate connection portion 1322 is arranged around the periphery of the metal connecting member 131 to isolate and insulate the periphery of the metal connecting member 131 from the inner wall of the housing 11.
本实施例中，绝缘塑胶件132的第一端部1321靠近金属连接件131的一侧设有卡位加强筋，卡位加强筋用于提升绝缘塑胶件132的强度。本实施例中绝缘塑胶件132的第二端部1323靠近金属连接件131一侧至少设有一个密封筋13231，密封筋13231用于将第二端部1323与金属连接件131内侧密封连接，提升了盖帽13的密封性。In this embodiment, the first end 1321 of the insulating plastic part 132 is provided with a locking reinforcement rib on a side close to the metal connecting part 131, and the locking reinforcement rib is used to increase the strength of the insulating plastic part 132. In this embodiment, the second end 1323 of the insulating plastic part 132 is provided with at least one sealing rib 13231 on the side close to the metal connecting part 131. The sealing rib 13231 is used for sealingly connecting the second end 1323 with the inner side of the metal connecting part 131 to lift The tightness of the cap 13 is improved.
结合图5、图6和图7，其中图5为本发明的具有盖帽支架的电池结构的第一实施例的壳体冲压形成封口结构前的结构示意图；图6为本发明的具有盖帽支架的电池结构的第一实施例的壳体冲压形成封口结构前，绝缘塑胶件的结构示意图；图7为图6的B处结构放大示意图。对本实施例中壳体11未冲压形成封口结构111前的绝缘塑胶件132结构进行详细阐述：5, 6 and 7, in which Figure 5 is a structural schematic diagram of the first embodiment of the battery structure with a cap bracket of the present invention before the shell is stamped to form a sealing structure; Before the shell of the first embodiment of the battery structure is stamped to form the sealing structure, the structure of the insulating plastic part is schematic; FIG. 7 is an enlarged schematic view of the structure at B in FIG. 6. The structure of the insulating plastic part 132 before the shell 11 is not punched to form the sealing structure 111 in this embodiment is described in detail:
壳体11未冲压形成封口结构前，变形前绝缘塑胶件132的第一端部1321沿中间连接部1322长边延伸；此时，第一端部1321的厚度介于0.1mm～1mm之间；变形前第二端部1323的厚度介于0.1mm～1mm之间；且本实施例中变形前的绝缘塑胶件132的第一端部1321厚度小于或等于第二端部1322厚度。Before the shell 11 is stamped to form a sealing structure, the first end 1321 of the insulating plastic part 132 before deformation extends along the long side of the intermediate connecting portion 1322; at this time, the thickness of the first end 1321 is between 0.1 mm and 1 mm; The thickness of the second end 1323 before deformation is between 0.1 mm and 1 mm; and the thickness of the first end 1321 of the insulating plastic part 132 before deformation in this embodiment is less than or equal to the thickness of the second end 1322.
变形前的卡位加强筋结构为图中所示的13211，变形前的密封筋结构如图中所示的13231。壳体11未冲压形成封口结构前，卡位加强筋13211的宽度介于0.1mm～0.5mm之间，卡位加强筋13211的厚度介于0.05mm～0.2mm之间；密封筋13231宽度介于0.1mm～0.5mm之间；密封筋13231的厚度介于0.03mm～0.2mm之间。The locking rib structure before deformation is 13211 as shown in the figure, and the sealing rib structure before deformation is 13231 as shown in the figure. Before the shell 11 is stamped to form a sealing structure, the width of the locking rib 13211 is between 0.1mm and 0.5mm, the thickness of the locking rib 13211 is between 0.05mm and 0.2mm; the width of the sealing rib 13231 is between Between 0.1mm and 0.5mm; the thickness of the sealing rib 13231 is between 0.03mm and 0.2mm.
在装配电池结构前，对本实施例中绝缘塑胶件132的尺寸进行限定，不仅便于绝缘塑胶件132生产过程中的注塑脱模；而且便于后续盖帽13的组装，提升了电池产品整体结构的密封性以及稳定性。Before assembling the battery structure, the size of the insulating plastic part 132 in this embodiment is limited, which not only facilitates the injection and demolding of the insulating plastic part 132 during the production process, but also facilitates the subsequent assembly of the cap 13 and improves the sealing of the overall structure of the battery product. And stability.
结合图1、图2和图4，本实施例中金属连接件131远离电芯12的外侧表面设有防爆结构。本实施例中的防爆结构为本实施例提供的第一种防爆结构，其包括防爆槽1311a，防爆槽1311a从外往内设置在金属连接件131的连接部1311。With reference to FIGS. 1, 2 and 4, in this embodiment, the outer surface of the metal connector 131 away from the battery core 12 is provided with an explosion-proof structure. The explosion-proof structure in this embodiment is the first type of explosion-proof structure provided in this embodiment, and it includes an explosion-proof groove 1311a, and the explosion-proof groove 1311a is arranged at the connecting portion 1311 of the metal connector 131 from the outside to the inside.
本发明中，防爆槽1311a通过金属连接件131从外往内冲压形成；防爆槽1311a的形状可以为环形、“U”形或线形结构。本实施例中的防爆槽1311a的形状优选为“U”形结构。In the present invention, the explosion-proof groove 1311a is formed by stamping from the outside to the inside by the metal connecting piece 131; the shape of the explosion-proof groove 1311a can be a ring, a "U" shape or a linear structure. The shape of the explosion-proof groove 1311a in this embodiment is preferably a "U"-shaped structure.
防爆槽1311a的开口处截面的长度大于或等于防爆槽1311a底端截面的长度。本发明中，防爆槽1311a的截面形状可以为“V”形、“U”形、顶端开 口的矩形、或者倒梯形结构。本实施例防爆槽1311a的截面结构优选为倒梯形结构。The length of the cross-section at the opening of the explosion-proof groove 1311a is greater than or equal to the length of the cross-section at the bottom end of the explosion-proof groove 1311a. In the present invention, the cross-sectional shape of the explosion-proof groove 1311a may be a "V" shape, a "U" shape, a rectangle with an open top, or an inverted trapezoid structure. The cross-sectional structure of the explosion-proof groove 1311a in this embodiment is preferably an inverted trapezoid structure.
本实施例中的金属连接件131中，未设置防爆槽1311a区域的连接部1311的厚度介于0.2mm～1mm之间，设置防爆槽1311a区域的连接部1311的厚度介于0.02mm～0.2mm之间。In the metal connector 131 in this embodiment, the thickness of the connecting portion 1311 in the area where the explosion-proof groove 1311a is not provided is between 0.2 mm and 1 mm, and the thickness of the connecting portion 1311 in the area where the explosion-proof groove 1311a is provided is between 0.02 mm and 0.2 mm. between.
此外，本实施例中的金属连接件131外侧设有加强筋，用于增加金属连接件131的强度。In addition, reinforcing ribs are provided on the outer side of the metal connecting piece 131 in this embodiment to increase the strength of the metal connecting piece 131.
本实施例中电池的高与电池的直径的比例小于或等于1，以满足市场上的部分纽扣电池的需求。In this embodiment, the ratio of the height of the battery to the diameter of the battery is less than or equal to 1, so as to meet the requirements of some button batteries on the market.
本实施例中的电池结构，在壳体11内置用于支撑盖帽13的支架112，取消了电池制作过程中滚槽工艺；从而简化了电池的组装工艺，提高了电池生产的综合效率，减少了电池生产的成本。此结构不仅避免了电池加工过程中，由于滚槽工艺导致的电池漏液，以及滚槽内壁挤压电芯的问题；而且不需要对钢壳体侧壁厚度进行限定，提升了电池结构的适用性，本实施例中的壳体可以采用厚度小于或等于0.15mm薄板材。In the battery structure of this embodiment, a bracket 112 for supporting the cap 13 is built in the housing 11, which eliminates the rolling groove process in the battery manufacturing process; thus simplifies the battery assembly process, improves the overall efficiency of battery production, and reduces The cost of battery production. This structure not only avoids the battery leakage caused by the rolling groove process during the battery processing, and the problem of the inner wall of the rolling groove squeezing the battery cell; it also does not need to limit the thickness of the side wall of the steel shell, which improves the applicability of the battery structure Therefore, the shell in this embodiment can be a thin plate with a thickness of less than or equal to 0.15 mm.
结合图8、图9和图10，其中图8为本发明的具有盖帽支架的电池结构的第一实施例的第二种盖帽结构的立体图，图9为本发明的具有盖帽支架的电池结构的第一实施例的第二种盖帽结构的截面图，图10为本发明的具有盖帽支架的电池结构的第一实施例的第二种盖帽结构的截面图。如下提供本实施例中盖帽的第二种结构进行阐述：With reference to Figures 8, 9 and 10, Figure 8 is a perspective view of a second cap structure of the first embodiment of the battery structure with a cap holder of the present invention, and Figure 9 is a perspective view of the battery structure with a cap holder of the present invention A cross-sectional view of the second cap structure of the first embodiment, and FIG. 10 is a cross-sectional view of the second cap structure of the first embodiment of the battery structure with a cap holder of the present invention. The second structure of the cap in this embodiment is provided as follows:
本实施例中，盖帽23包括金属连接件231以及绝缘塑胶件232，本实施例中，金属连接件231上包括用于与电芯22的正极极片221连接的连接部2311；金属连接件231远离电芯22的外侧表面设有防爆结构。本实施例中的防爆结构包括安全阀金属盖2312和热熔材料。In this embodiment, the cap 23 includes a metal connecting piece 231 and an insulating plastic piece 232. In this embodiment, the metal connecting piece 231 includes a connecting portion 2311 for connecting with the positive pole piece 221 of the cell 22; the metal connecting piece 231 The outer surface away from the battery core 22 is provided with an explosion-proof structure. The explosion-proof structure in this embodiment includes a safety valve metal cover 2312 and a hot melt material.
本实施例中，热熔材料优选为热敏热熔胶2313。In this embodiment, the hot-melt material is preferably heat-sensitive hot-melt adhesive 2313.
本实施例中，金属连接件231位于连接部2311外侧设置有第一凹槽2311a，第一凹槽2311a内设有安全阀金属盖2312，且安全阀金属盖2312通过第一热敏材料与金属连接件231连接；金属连接件231的连接部2311设置有第一泄气通道2311b，第一泄气通道2311b将第一凹槽2311a与电池壳体21内部连通，用于排出电芯22产生的高压气体。In this embodiment, the metal connecting piece 231 is provided with a first groove 2311a located outside the connecting portion 2311, a safety valve metal cover 2312 is provided in the first groove 2311a, and the safety valve metal cover 2312 is made of a first heat-sensitive material and a metal The connecting piece 231 is connected; the connecting portion 2311 of the metal connecting piece 231 is provided with a first vent channel 2311b, the first vent channel 2311b communicates the first groove 2311a with the inside of the battery case 21, and is used to discharge the high-pressure gas generated by the battery cell 22 .
本实施例中，第一凹槽2311a的深度介于0.2mm～1mm。In this embodiment, the depth of the first groove 2311a is between 0.2 mm and 1 mm.
本实施例中的第一凹槽2311a的截面形状为圆形、椭圆形或多边形，安全阀金属盖2312截面形状与第一凹槽2311a的截面形状相配合。The cross-sectional shape of the first groove 2311a in this embodiment is circular, elliptical or polygonal, and the cross-sectional shape of the safety valve metal cover 2312 matches the cross-sectional shape of the first groove 2311a.
此外，本实施例中的第一凹槽2311a内可设有用于限定安全阀金属盖2312位置的凸缘。In addition, the first groove 2311a in this embodiment may be provided with a flange for limiting the position of the safety valve metal cover 2312.
本实施例的电池结构在电芯22正常工作状态下，安全阀金属盖2312通过热熔材料将第一泄气通道2311b固定密封。当电池发热，电芯22表面温度上升到热敏热熔胶2313的熔融温度范围内，热敏热熔胶2313失去粘结能力；安全阀金属盖2312被壳体21内部的高压气体顶开；电池内部高压气体得以排放，电芯22内部压力减小，直至恢复到正常状态。从而避免了电池着火或爆炸等不安全事故，提升了电池的使用安全性。In the battery structure of this embodiment, when the battery cell 22 is in a normal working state, the safety valve metal cover 2312 fixes and seals the first air vent channel 2311b through a hot melt material. When the battery heats up, the surface temperature of the battery core 22 rises to the melting temperature range of the heat-sensitive hot melt adhesive 2313, and the heat-sensitive hot melt adhesive 2313 loses its bonding ability; the safety valve metal cover 2312 is pushed open by the high-pressure gas inside the housing 21; The high-pressure gas inside the battery is discharged, and the internal pressure of the battery cell 22 is reduced until it returns to a normal state. Therefore, unsafe accidents such as battery fire or explosion are avoided, and the safety of the battery is improved.
本实施例的防爆结构可循环使用，提升了电池的使用安全性，延长了电池的使用寿命。防爆结构将安全阀金属盖2312与热敏材料内置在盖帽里面，防爆结构在排放电池的高压气体时，电池整体结构不需要预留额外的高度方向空间；从而使得盖帽23成品厚度减小，壳体21可以容纳更大的电芯，增加电池的容量，提升了电池的实用性。The explosion-proof structure of this embodiment can be recycled, which improves the safety of the battery and prolongs the service life of the battery. The explosion-proof structure incorporates the safety valve metal cover 2312 and the heat-sensitive material inside the cap. When the explosion-proof structure discharges the high-pressure gas from the battery, the overall structure of the battery does not need to reserve extra space in the height direction; thus, the thickness of the finished cap 23 is reduced, and the shell The body 21 can accommodate larger batteries, increase the capacity of the battery, and improve the practicability of the battery.
结合图11、图12和图14，其中图11为本发明的具有盖帽支架的电池结构的第二实施例立体图，图12为本发明的具有盖帽支架的电池结构的第二实施例结构截面图，图14为本发明的具有盖帽支架的电池结构的第二实施例中截面结构防爆图。如下提供本发明具有盖帽支架的电池结构：With reference to Figures 11, 12 and 14, Figure 11 is a perspective view of a second embodiment of the battery structure with a cap holder according to the present invention, and Figure 12 is a structural cross-sectional view of the second embodiment of the battery structure with a cap holder according to the present invention 14 is an explosion-proof view of the cross-sectional structure of the second embodiment of the battery structure with a cap holder according to the present invention. The battery structure with the cap holder of the present invention is provided as follows:
其电池结构包括壳体31、电芯32以及盖帽33；其中壳体31用于安装部件，壳体31为一端开口的中空筒状结构；电芯32设置在壳体31内，用于提供电能；盖帽33设置在壳体31一端开口处，用于密封壳体31的开口，并引出电芯32的正极电极。The battery structure includes a housing 31, a battery cell 32, and a cap 33; the housing 31 is used for mounting components, and the housing 31 is a hollow cylindrical structure with an open end; the battery cell 32 is arranged in the housing 31 to provide electrical energy The cap 33 is provided at the opening at one end of the housing 31, used to seal the opening of the housing 31, and lead out the positive electrode of the cell 32.
其中，壳体31一端开口处设有封口结构311，封口结构311用于限定盖帽33外侧的位置；壳体31内部设有用于支撑盖帽33的支架312，支架312支撑盖帽32，并将盖帽33与电芯32一端间隔开。Wherein, a sealing structure 311 is provided at the opening at one end of the housing 31, and the sealing structure 311 is used to limit the position of the outer side of the cap 33; the housing 31 is provided with a bracket 312 for supporting the cap 33, and the bracket 312 supports the cap 32 and connects the cap 33. It is spaced apart from one end of the battery core 32.
结合图13，图13为图12的C处结构放大示意图。对本实施例中支架312的结构进行阐述：With reference to FIG. 13, FIG. 13 is an enlarged schematic diagram of the structure at C in FIG. 12. The structure of the bracket 312 in this embodiment is described:
本实施例提供的支架312包括延伸部3121和支撑部3122；延伸部3121设置在壳体31内部靠近开口处一端，延伸部3121长边与壳体31轴向平行，且延伸部3121一侧与壳体31内壁连接，延伸部3121另一侧与盖帽33外壁接触并绝缘；支撑部3122位于支架另一端，支撑部3122与延伸部3121远离壳体31的开口处一端连接，且沿壳体31内部延伸，用于支撑电池盖帽33。The bracket 312 provided in this embodiment includes an extension part 3121 and a support part 3122; the extension part 3121 is provided at one end of the housing 31 near the opening, the long side of the extension part 3121 is parallel to the axial direction of the housing 31, and one side of the extension part 3121 is parallel to The inner wall of the housing 31 is connected, and the other side of the extension part 3121 is in contact with and insulated from the outer wall of the cap 33; the support part 3122 is located at the other end of the bracket, and the support part 3122 is connected to the end of the extension part 3121 away from the opening of the housing 31 and runs along the housing 31. The inner extension is used to support the battery cover 33.
本实施例中，支架312为筒状结构，且支架312与绝缘塑胶件322套接。本实施例中，支撑部3122与延伸部3121之间的夹角范围介于85°～95°之间。优选的，本实施例中支架312的支撑部3122与延伸部3121之间的夹角为直角，便于支撑盖帽33，充分利用壳体31内部空间。In this embodiment, the bracket 312 has a cylindrical structure, and the bracket 312 is sleeved with the insulating plastic part 322. In this embodiment, the angle between the support portion 3122 and the extension portion 3121 ranges from 85° to 95°. Preferably, the included angle between the support portion 3122 of the bracket 312 and the extension portion 3121 in this embodiment is a right angle, which facilitates the support of the cap 33 and makes full use of the internal space of the housing 31.
本实施例中，支架312还包括加强部3123，用于加强支架312的刚度，加强部3123一端与支撑部3122一端连接，加强部3123另一端与延伸部3121 连接，加强部3123的厚度大于支撑部3122的厚度，且加强部3123的厚度大于延伸部3121的厚度。In this embodiment, the bracket 312 further includes a reinforcement part 3123 for strengthening the rigidity of the bracket 312. One end of the reinforcement part 3123 is connected to one end of the support part 3122, and the other end of the reinforcement part 3123 is connected to the extension part 3121. The thickness of the reinforcement part 3123 is greater than that of the support part 3122. The thickness of the portion 3122, and the thickness of the reinforcement portion 3123 is greater than the thickness of the extension portion 3121.
结合图14，对本实施例中的电芯32结构进行阐述：With reference to Fig. 14, the structure of the battery cell 32 in this embodiment will be described:
本实施例中的壳体31为钢壳体31，该壳体31包括与盖帽33的底板313；电芯32通过正极极片、绝缘隔膜以及负极极片依次叠加且绕卷形成螺旋柱状结构。本实施例中的电芯32还包括正极极耳321和负极极耳2322，且电芯32的正极极耳321与电池盖帽33连接，电芯32的负极极耳322与壳体31连接。电芯32与底板313之间设有第一绝缘片323，负极极耳322一端与电芯32的负极电极连接，负极极耳322另一端贯穿第一绝缘片323，并沿底板313内侧延伸；本实施例中的负极极耳322与壳体31通过从外向内焊接。The casing 31 in this embodiment is a steel casing 31, which includes a bottom plate 313 with a cap 33; the battery core 32 is sequentially superimposed and wound to form a spiral columnar structure by a positive pole piece, an insulating diaphragm, and a negative pole piece. The battery cell 32 in this embodiment further includes a positive electrode tab 321 and a negative electrode tab 2322, and the positive electrode tab 321 of the battery cell 32 is connected to the battery cap 33, and the negative electrode tab 322 of the battery cell 32 is connected to the housing 31. A first insulating sheet 323 is provided between the battery core 32 and the bottom plate 313, one end of the negative electrode tab 322 is connected to the negative electrode of the battery core 32, and the other end of the negative electrode tab 322 penetrates the first insulating sheet 323 and extends along the inner side of the bottom plate 313; In this embodiment, the negative electrode tab 322 and the housing 31 are welded from the outside to the inside.
本实施例中，电芯32与盖帽33之间设有第二绝缘片324，正极极耳321一端与电芯32的正极极片连接，正极极耳321另一端贯穿第一绝缘片323，并沿连接部3311内侧并延伸；本实施例中的第二绝缘片324上设有若干用于电芯32散热的散热孔。In this embodiment, a second insulating sheet 324 is provided between the battery cell 32 and the cap 33, one end of the positive electrode tab 321 is connected to the positive electrode sheet of the battery cell 32, and the other end of the positive electrode tab 321 penetrates the first insulating sheet 323, and Along the inner side of the connecting portion 3311 and extend; the second insulating sheet 324 in this embodiment is provided with a plurality of heat dissipation holes for heat dissipation of the battery core 32.
请参照图12和图14，本实施例中的盖帽33包括金属连接件331以及绝缘塑胶件332，金属连接件331设置在壳体31的开口处，并与电芯32的正极极耳321连接，金属连接件331用于引出电芯32的正极电极；绝缘塑胶件332环绕设置在金属连接件331的周边，用于将金属连接件331与壳体31的内壁绝缘防护。12 and 14, the cap 33 in this embodiment includes a metal connecting piece 331 and an insulating plastic piece 332. The metal connecting piece 331 is disposed at the opening of the housing 31 and connected to the positive electrode tab 321 of the battery cell 32 , The metal connecting piece 331 is used to lead out the positive electrode of the battery core 32; the insulating plastic piece 332 is arranged around the periphery of the metal connecting piece 331 to insulate and protect the metal connecting piece 331 from the inner wall of the casing 31.
本实施例中的绝缘塑胶件332包括第一端部3321、第二端部3323以及中间连接部3322。本实施例中，绝缘塑胶件332的第一端部3321靠近金属连接件331的一侧设有卡位加强筋，卡位加强筋用于提升绝缘塑胶件322的强度。本实施例中绝缘塑胶件332的第二端部3323靠近金属连接件331的一侧至少设有一个密封筋33231，密封筋33231用于将第二端部3323与金属连接件331内侧密封连接。The insulating plastic part 332 in this embodiment includes a first end portion 3321, a second end portion 3323 and an intermediate connecting portion 3322. In this embodiment, the first end 3321 of the insulating plastic part 332 is provided with a locking reinforcement rib on a side close to the metal connecting part 331, and the locking reinforcement rib is used to increase the strength of the insulating plastic part 322. In this embodiment, the second end 3323 of the insulating plastic part 332 is provided with at least one sealing rib 33231 on the side close to the metal connecting part 331, and the sealing rib 33231 is used for sealingly connecting the second end 3323 with the inner side of the metal connecting part 331.
结合图12和图14，本实施例中金属连接件331远离电芯32的外侧表面设有防爆结构。本实施例中提供防爆结构的第一种结构，其包括防爆槽3311a，防爆槽3311a从外往内设置在金属连接件331的连接部3311。With reference to FIGS. 12 and 14, in this embodiment, the outer surface of the metal connector 331 away from the battery core 32 is provided with an explosion-proof structure. The first structure of the explosion-proof structure provided in this embodiment includes an explosion-proof groove 3311a, and the explosion-proof groove 3311a is provided at the connecting portion 3311 of the metal connecting member 331 from the outside to the inside.
本发明中的防爆槽3311a可以为环形、“U”形或线形结构。本实施例中的防爆槽3311a优选为“U”形结构。防爆槽3311a开口处截面的长度大于或等于防爆槽底端截面的长度；本实施例中，防爆槽3311a的截面形状可以为“V”形、“U”形、顶端开口的矩形、或者倒梯形结构。本实施例防爆槽3311a的截面形状采用倒梯形结构。The explosion-proof groove 3311a in the present invention may have a ring-shaped, "U"-shaped or linear structure. The explosion-proof groove 3311a in this embodiment is preferably a "U"-shaped structure. The length of the cross section at the opening of the explosion-proof groove 3311a is greater than or equal to the length of the cross-section at the bottom end of the explosion-proof groove; structure. The cross-sectional shape of the explosion-proof groove 3311a in this embodiment adopts an inverted trapezoidal structure.
本实施例中的金属连接件331中，未设置防爆槽3311a的连接部3311区域的厚度介于0.2mm～1mm之间，设置防爆槽3311a区域的连接部3311的厚 度介于0.02mm～0.2mm之间。In the metal connector 331 in this embodiment, the thickness of the connecting portion 3311 area where the explosion-proof groove 3311a is not provided is between 0.2 mm and 1 mm, and the thickness of the connecting portion 3311 where the explosion-proof groove 3311a is provided is between 0.02 mm and 0.2 mm. between.
此外，本实施例中的金属连接件331外侧设有加强筋，用于增加金属连接件331的强度。In addition, the metal connecting piece 331 in this embodiment is provided with a reinforcing rib on the outside to increase the strength of the metal connecting piece 331.
相较于第一实施例，本实施例的电池结构的壳体31内置用于支撑盖帽23的支架312，支架312的支撑部3122支撑盖帽33，延伸部3121一侧与壳体31连接；且延伸部3121另一侧与绝缘塑胶件332外圈接触并绝缘。本实施例的支架312结构精简，减小了支架占用壳体内部的空间；而且支架312套接在盖帽33周边，壳体31内部可以容纳直径更大的电芯，增加了电池容量。Compared with the first embodiment, the casing 31 of the battery structure of this embodiment has a built-in bracket 312 for supporting the cap 23, the support portion 3122 of the bracket 312 supports the cap 33, and one side of the extension portion 3121 is connected to the casing 31; and The other side of the extension part 3121 is in contact with the outer ring of the insulating plastic part 332 and is insulated. The structure of the bracket 312 of this embodiment is simplified, which reduces the space occupied by the bracket inside the casing; and the bracket 312 is sleeved around the cap 33, and the inside of the casing 31 can accommodate batteries with a larger diameter, which increases the battery capacity.
请参照图15、图16和图17，图15为本发明的具有盖帽支架的电池结构的第二实施例的第二种盖帽结构立体图，图16为本发明的具有盖帽支架的电池结构的第二实施例的第二种盖帽结构的截面图，图17为图16中的盖帽结构放大示意图。如下提供本发明第二实施例中盖帽的第二种结构：Please refer to FIG. 15, FIG. 16, and FIG. 17, FIG. 15 is a perspective view of a second cap structure of the second embodiment of the battery structure with a cap holder of the present invention, and FIG. 16 is a second cap structure of the battery structure with a cap holder of the present invention A cross-sectional view of the second cap structure of the second embodiment, and FIG. 17 is an enlarged schematic view of the cap structure in FIG. 16. The second structure of the cap in the second embodiment of the present invention is provided as follows:
本实施例中，盖帽43包括金属连接件431以及绝缘塑胶件432，本实施例中，金属连接件431上包括用于与电芯32的正极极片321连接的连接部4311；金属连接件431远离电芯32的外侧表面设有防爆结构。本实施例中的防爆结构包括安全阀盖板4312和热熔材料，热熔材料优选为热敏热熔胶4313。In this embodiment, the cap 43 includes a metal connecting piece 431 and an insulating plastic piece 432. In this embodiment, the metal connecting piece 431 includes a connecting portion 4311 for connecting with the positive pole piece 321 of the battery cell 32; the metal connecting piece 431 The outer surface away from the battery core 32 is provided with an explosion-proof structure. The explosion-proof structure in this embodiment includes a safety valve cover 4312 and a hot-melt material, and the hot-melt material is preferably a heat-sensitive hot-melt adhesive 4313.
本实施例中，金属连接件431位于连接部4311外侧设置有第二凹槽4311a，第二凹槽4311a内设有安全阀金属盖4312，且安全阀金属盖4312通过热敏热熔胶4313与金属连接件431连接，金属连接件431的连接部4311设置有第二泄气通道4311b，第二泄气通道4311b将第二凹槽4311a与电池壳体31内部连通，用于排出电芯32产生的高压气体。本实施例中，第二凹槽4311a的深度介于0.2mm～1mm。In this embodiment, the metal connecting piece 431 is provided with a second groove 4311a outside the connecting portion 4311, a safety valve metal cover 4312 is provided in the second groove 4311a, and the safety valve metal cover 4312 is connected to The metal connecting piece 431 is connected. The connecting portion 4311 of the metal connecting piece 431 is provided with a second bleed channel 4311b. The second bleed channel 4311b communicates the second groove 4311a with the inside of the battery case 31 and is used to discharge the high voltage generated by the battery cell 32 gas. In this embodiment, the depth of the second groove 4311a is between 0.2 mm and 1 mm.
第二凹槽4311a的截面形状为圆形、椭圆形或多边形，安全阀金属盖4312截面形状与第二凹槽4311a的截面形状相配合。本实施例中的第二种防爆结构可重复使用，提升了电池结构的实用性。The cross-sectional shape of the second groove 4311a is circular, elliptical or polygonal, and the cross-sectional shape of the safety valve metal cover 4312 matches the cross-sectional shape of the second groove 4311a. The second explosion-proof structure in this embodiment can be reused, which improves the practicability of the battery structure.
本实施例的电池结构在电芯32正常工作状态下，安全阀金属盖4312通过热敏热熔胶4313将第二泄气通道4311b固定密封。当电池发热，电芯32表面温度上升到热敏热熔胶4313的熔融温度范围内，热敏热熔胶4313失去粘结能力；安全阀金属盖4312被壳体31内部的高压气体顶开；电池内部高压气体得以排放，电芯32内部压力减小，直至恢复到正常状态。从而避免了电池着火或爆炸等不安全事故，提升了电池的使用安全性。In the battery structure of this embodiment, when the battery cell 32 is in a normal working state, the safety valve metal cover 4312 is fixedly sealed with the second bleed channel 4311b through the heat-sensitive hot melt adhesive 4313. When the battery heats up, the surface temperature of the battery cell 32 rises to the melting temperature range of the heat-sensitive hot melt adhesive 4313, and the heat-sensitive hot melt adhesive 4313 loses its bonding ability; the safety valve metal cover 4312 is pushed open by the high-pressure gas inside the housing 31; The high-pressure gas inside the battery is discharged, and the internal pressure of the battery cell 32 is reduced until it returns to a normal state. Therefore, unsafe accidents such as battery fire or explosion are avoided, and the safety of the battery is improved.
本实施例的电池结构，在使用上支架支撑盖帽的基础上，还增加了可循环使用的防爆结构，提升了电池的使用安全性，延长了电池的使用寿命。防爆结构中通过将安全阀金属盖4312与热敏材料内置在盖帽里面，防爆结构在排放电池的高压气体时，电池整体结构不需要预留额外的高度方向空间；从而使得 盖帽43成品厚度减小，壳体31可以容纳更大的电芯，增加电池的容量，提升了电池的实用性。In the battery structure of this embodiment, on the basis of using the upper bracket to support the cap, a recyclable explosion-proof structure is also added, which improves the safety of the battery and prolongs the service life of the battery. In the explosion-proof structure, the safety valve metal cover 4312 and the heat-sensitive material are built into the cap. When the explosion-proof structure discharges the high-pressure gas of the battery, the overall structure of the battery does not need to reserve extra space in the height direction; thus, the thickness of the finished cap 43 is reduced. , The housing 31 can accommodate larger batteries, increase the capacity of the battery, and improve the practicability of the battery.
结合图18、图19和图20，其中图18为本发明的具有盖帽支架的电池结构的第三实施例的立体图，图19为本发明的具有盖帽支架的电池结构的第三实施例的仰视图，图20为本发明的具有盖帽支架的电池结构的第三实施例的截面图。如下提供本发明的具有盖帽支架的电池结构第三实施例：With reference to Figures 18, 19 and 20, Figure 18 is a perspective view of a third embodiment of the battery structure with a cap holder of the present invention, and Figure 19 is a bottom view of the third embodiment of the battery structure with a cap holder of the present invention Figure 20 is a cross-sectional view of a third embodiment of the battery structure with a cap holder according to the present invention. The third embodiment of the battery structure with a cap holder according to the present invention is provided as follows:
本实施例中的电池结构包括壳体51、电芯52以及盖帽53；其中壳体51用于安装部件，壳体51为一端开口的中空筒状结构；电芯52设置在壳体51内，用于提供电能；盖帽53设置在壳体51一端开口处，用于密封壳体51的开口。The battery structure in this embodiment includes a casing 51, a battery cell 52, and a cap 53; the casing 51 is used for mounting components, and the casing 51 is a hollow cylindrical structure with an open end; the battery core 52 is arranged in the casing 51, It is used to provide electric power; the cap 53 is arranged at the opening at one end of the casing 51 and is used to seal the opening of the casing 51.
其中，壳体51一端开口处设有封口结构511，封口结构511用于限定盖帽53外侧的位置；壳体51内部设有用于支撑盖帽53的支架512，支架512用于将盖帽53与电芯52一端间隔开。Wherein, a sealing structure 511 is provided at the opening at one end of the housing 51, and the sealing structure 511 is used to limit the position of the outer side of the cap 53; the housing 51 is provided with a bracket 512 for supporting the cap 53. The bracket 512 is used to connect the cap 53 with the battery cell. 52 is spaced at one end.
结合图21，图21为图20的局部结构放大示意图。本实施例中壳体51包括与盖帽53位置相对的底板513，底板513底端设有第三凹槽5131，底板513的外表面有第三凹槽5131；底板513设置有第三泄气通道5132，第三泄气通道5132将第三凹槽5131与壳体51内部连通，用于排出电芯52产生的高压气体。本实施例中，壳体51底板513上的第三凹槽5131内设有第二安全阀盖板514，第二安全阀盖板514通过热熔材料与底板513连接。本实施例中热熔材料优选为热敏热熔胶515。In conjunction with FIG. 21, FIG. 21 is an enlarged schematic diagram of a partial structure of FIG. 20. In this embodiment, the housing 51 includes a bottom plate 513 opposite to the cap 53. The bottom end of the bottom plate 513 is provided with a third groove 5131, and the outer surface of the bottom plate 513 is provided with a third groove 5131; the bottom plate 513 is provided with a third vent channel 5132. The third bleed channel 5132 connects the third groove 5131 with the inside of the housing 51 and is used to discharge the high-pressure gas generated by the cell 52. In this embodiment, the third groove 5131 on the bottom plate 513 of the housing 51 is provided with a second safety valve cover plate 514, and the second safety valve cover plate 514 is connected to the bottom plate 513 by a hot melt material. The hot melt material in this embodiment is preferably a heat-sensitive hot melt adhesive 515.
结合图20和22，图20为本发明的具有盖帽支架的电池结构的第三实施例的截面图，图22为本发明的具有盖帽支架的电池结构的第三实施例的截面爆炸图。对本实施例中支架的第一结构进行阐述：20 and 22, FIG. 20 is a cross-sectional view of the third embodiment of the battery structure with a cap holder of the present invention, and FIG. 22 is an exploded cross-sectional view of the third embodiment of the battery structure with a cap holder of the present invention. The first structure of the bracket in this embodiment is described:
本实施例提供的支架512包括延伸部5121和支撑部5122；延伸部5121设置在壳体51内部远离开口处一端，延伸部5121长边与壳体51轴向平行，且延伸部5121一侧与壳体51内壁连接，延伸部5121另一侧与电芯52外壁接触并绝缘；支撑部5122与延伸部5121靠近壳体51的开口处一端连接，且支撑部5122位于支架512靠近壳体51的开口处一端，且沿壳体51内部延伸，用于支撑电池盖帽53。The bracket 512 provided in this embodiment includes an extension portion 5121 and a support portion 5122; the extension portion 5121 is provided at one end of the housing 51 away from the opening, the long side of the extension portion 5121 is parallel to the axis of the housing 51, and one side of the extension portion 5121 is parallel to The inner wall of the casing 51 is connected, and the other side of the extension portion 5121 is in contact with and insulated from the outer wall of the cell 52; the support portion 5122 is connected to one end of the extension portion 5121 close to the opening of the casing 51, and the support portion 5122 is located at the bracket 512 close to the casing 51 One end of the opening extends along the inside of the casing 51 and is used to support the battery cover 53.
本实施例中，支架512为筒状结构，且与套接在电芯52上。此结构便于电池产品的组装，且提升支架512在电池内部的稳定性。In this embodiment, the bracket 512 has a cylindrical structure and is sleeved on the battery core 52. This structure facilitates the assembly of battery products and improves the stability of the bracket 512 inside the battery.
本实施例中，支撑部5122与延伸部5121之间的夹角范围介于85°～95°之间。优选的，本实施例中支架512的支撑部5122与延伸部5121之间的夹角为直角。In this embodiment, the angle between the support portion 5122 and the extension portion 5121 ranges from 85° to 95°. Preferably, the angle between the support portion 5122 of the bracket 512 and the extension portion 5121 in this embodiment is a right angle.
本实施例中，支架512还包括加强部5123，用于加强支架512的刚度， 加强部5123一端与支撑部5122一端连接，加强部5123另一端与延伸部5121连接，加强部5123的厚度大于支撑部5122的厚度，且加强部5123的厚度大于延伸部5121的厚度。In this embodiment, the bracket 512 further includes a reinforcement part 5123 for strengthening the rigidity of the bracket 512. One end of the reinforcement part 5123 is connected to one end of the support part 5122, and the other end of the reinforcement part 5123 is connected to the extension part 5121. The thickness of the reinforcement part 5123 is greater than that of the support part 5121. The thickness of the portion 5122, and the thickness of the reinforcement portion 5123 is greater than the thickness of the extension portion 5121.
相较于第一实施和第二实施例，本实施例的电池结构，在壳体51底端设有可重复使用的防爆结构，提升了电池使用安全性；在电池泄压时，电池不需要预留额外的高度方向空间；而且安全阀防爆结构不占用盖帽成品空间，使得盖帽成品厚度小，便于电池的生产装配。Compared with the first and second embodiments, the battery structure of this embodiment is provided with a reusable explosion-proof structure at the bottom end of the casing 51, which improves the safety of the battery; when the battery is depressurized, the battery does not need Reserve extra space in the height direction; and the explosion-proof structure of the safety valve does not occupy the space of the finished cap, so that the thickness of the finished cap is small, which is convenient for the production and assembly of the battery.
结合图23和24，图23为本发明的具有盖帽支架的电池结构的第三实施例中的第二种盖帽结构的截面示意图，图24为图23的D处结构放大示意图。对本实施例中支架的第二结构进行阐述：本实施例提供的支架612包括延伸部6121和支撑部6122；延伸部6121设置在壳体51内部靠近开口处一端，延伸部6121长边与壳体51轴向平行，且延伸部6121一侧与壳体51内壁连接，延伸部6121另一侧与盖帽53外壁接触并绝缘；支撑部6122位于支架另一端，支撑部6122与延伸部6121远离壳体51的开口处一端连接，且沿壳体51内部延伸，用于支撑电池盖帽53。With reference to FIGS. 23 and 24, FIG. 23 is a schematic cross-sectional view of the second cap structure in the third embodiment of the battery structure with cap holder of the present invention, and FIG. 24 is an enlarged schematic view of the structure at D in FIG. 23. The second structure of the bracket in this embodiment is described: the bracket 612 provided in this embodiment includes an extension part 6121 and a support part 6122; 51 is axially parallel, and one side of the extension portion 6121 is connected to the inner wall of the housing 51, and the other side of the extension portion 6121 is in contact with and insulated from the outer wall of the cap 53; the support portion 6122 is located at the other end of the bracket, and the support portion 6122 and the extension portion 6121 are away from the housing One end of the opening of 51 is connected and extends along the inside of the casing 51 for supporting the battery cover 53.
本实施例中，支架612为筒状结构。有效且提升支架612在电池内部的稳定性。本实施例中，支撑部6122与延伸部6121之间的夹角范围介于85°～95°之间。优选的，本实施例中支架612的支撑部6122与延伸部6121之间的夹角为直角。In this embodiment, the bracket 612 has a cylindrical structure. It is effective and improves the stability of the bracket 612 inside the battery. In this embodiment, the angle between the support portion 6122 and the extension portion 6121 ranges from 85° to 95°. Preferably, the angle between the support portion 6122 of the bracket 612 and the extension portion 6121 in this embodiment is a right angle.
本实施例中，支架612还包括加强部6123，用于加强支架612的刚度，加强部6123一端与支撑部6122一端连接，加强部6123另一端与延伸部6121连接，加强部6123的厚度大于支撑部6122的厚度，且加强部6123的厚度大于延伸部6121的厚度。In this embodiment, the bracket 612 further includes a reinforcement part 6123 for strengthening the rigidity of the bracket 612. One end of the reinforcement part 6123 is connected to one end of the support part 6122, and the other end of the reinforcement part 6123 is connected to the extension part 6121. The thickness of the reinforcement part 6123 is greater than that of the support part 6122. The thickness of the portion 6122, and the thickness of the reinforcement portion 6123 is greater than the thickness of the extension portion 6121.
相较于第一实施和第二实施例，本实施例的电池结构，在壳体51底端设有可重复使用的防爆结构，提升了电池使用安全性；防爆结构不占用盖帽成品空间，使得盖帽成品厚度小，便于电池的生产装配。此外，本实施例中的壳体51内置用于支撑盖帽53的支架512，支架512套接在盖帽51周边，壳体31内部可以容纳直径更大的电芯，增加了电池容量。Compared with the first embodiment and the second embodiment, the battery structure of this embodiment is provided with a reusable explosion-proof structure at the bottom end of the housing 51, which improves the safety of the battery; The thickness of the finished cap is small, which is convenient for the production and assembly of the battery. In addition, the housing 51 in this embodiment has a built-in bracket 512 for supporting the cap 53, and the bracket 512 is sleeved around the cap 51. The inside of the housing 31 can accommodate cells with a larger diameter, which increases the battery capacity.
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。In summary, although the present invention has been disclosed in preferred embodiments as above, the above preferred embodiments are not intended to limit the present invention. Those of ordinary skill in the art can make various modifications without departing from the spirit and scope of the present invention. Such changes and modifications, so the protection scope of the present invention is subject to the scope defined by the claims.

Claims (18)

  1. 一种具有盖帽支架的电池结构，其包括：A battery structure with a cap bracket, which includes:
    壳体，用于安装部件，所述壳体为一端开口的中空筒状结构；A housing for installing components, the housing is a hollow cylindrical structure with an open end;
    电芯，设置在壳体内，用于提供电能；以及The electric core is arranged in the casing for providing electric energy; and
    盖帽，设置在所述壳体一端开口处，并与所述电芯连接，所述盖帽用于密封所述壳体的开口，并引出所述电芯的电极；A cap is arranged at the opening at one end of the housing and is connected to the battery core, and the cap is used to seal the opening of the housing and lead out the electrodes of the battery core;
    其中，所述壳体内部设有支架，所述支架用于支撑所述盖帽，并将所述盖帽与所述电芯一端间隔开；Wherein, a bracket is provided inside the housing, and the bracket is used to support the cap and space the cap from one end of the battery core;
    所述支架包括：The bracket includes:
    延伸部，设置在所述支架一端，且所述延伸部一侧与所述壳体连接；An extension part, which is provided at one end of the bracket, and one side of the extension part is connected with the housing;
    支撑部，设置在所述支架另一端，所述支撑部沿所述壳体内部延伸，用于支撑所述盖帽；以及A support portion, which is provided at the other end of the bracket, the support portion extends along the inside of the housing and is used to support the cap; and
    加强部，设置在所述支架部位，用于加强所述支架的刚度，所述加强部一端与所述支撑部一端连接，所述加强部另一端与所述延伸部连接，所述加强部的厚度大于所述延伸部的厚度，且所述加强部的厚度大于所述支撑部的厚度；The reinforcing part is arranged at the support part and is used to strengthen the rigidity of the support. The thickness is greater than the thickness of the extension portion, and the thickness of the reinforcement portion is greater than the thickness of the support portion;
    所述盖帽包括：The cap includes:
    金属连接件，设置在所述电池壳体的开口一端，并与所述电芯的正极极耳连接；以及，The metal connecting piece is arranged at one end of the opening of the battery casing and connected to the positive electrode tab of the battery; and,
    绝缘塑胶件，环绕设置在所述金属连接件周边，用于将所述金属连接件与所述电池壳体的内壁绝缘防护；An insulating plastic part, which is arranged around the periphery of the metal connector, and is used to insulate and protect the metal connector from the inner wall of the battery casing;
    其中，所述金属连接件中心处设有连接部，所述连接部与所述电芯的正极极耳一端连接；所述连接部远离所述电芯的一侧设有防爆结构，用于排出所述电芯产生的高压气体。Wherein, a connecting part is provided at the center of the metal connector, and the connecting part is connected to one end of the positive electrode tab of the battery; the side of the connecting part away from the battery is provided with an explosion-proof structure for discharge The high-pressure gas generated by the battery cell.
  2. 一种具有盖帽支架的电池结构，其包括：A battery structure with a cap bracket, which includes:
    壳体，用于安装部件，所述壳体为一端开口的中空筒状结构；A housing for installing components, the housing is a hollow cylindrical structure with an open end;
    电芯，设置在壳体内，用于提供电能；以及The electric core is arranged in the casing for providing electric energy; and
    盖帽，设置在所述壳体一端开口处，并与所述电芯连接，所述盖帽用于密封所述壳体的开口，并引出所述电芯的电极；A cap is arranged at the opening at one end of the housing and is connected to the battery core, and the cap is used to seal the opening of the housing and lead out the electrodes of the battery core;
    其中，所述壳体内部设有支架，所述支架用于支撑所述盖帽，并将所述盖帽与所述电芯一端间隔开。Wherein, a bracket is provided inside the housing, and the bracket is used to support the cap and space the cap from one end of the battery core.
  3. 根据权利要求2所述的具有盖帽支架的电池结构，其中所述支架包括：The battery structure with a cap holder according to claim 2, wherein the holder comprises:
    延伸部，设置在所述支架一端，且所述延伸部一侧与所述壳体连接，以及，An extension part arranged at one end of the bracket, and one side of the extension part is connected with the housing, and,
    支撑部，设置在所述支架另一端，所述支撑部沿所述壳体内部延伸，用于支撑所述盖帽。The supporting part is arranged at the other end of the bracket, and the supporting part extends along the inside of the housing and is used for supporting the cap.
  4. 根据权利要求3所述的具有盖帽支架的电池结构，其中所述支架还包括加强部，设置在所述支架部位，用于加强所述支架的刚度，所述加强部一端与所述支撑部一端连接，所述加强部另一端与所述延伸部连接，所述加强部的厚度大于所述延伸部的厚度，且所述加强部的厚度大于所述支撑部的厚度。The battery structure with a cap holder according to claim 3, wherein the holder further comprises a reinforcing part disposed at the part of the holder for strengthening the rigidity of the holder, one end of the reinforcing part and one end of the supporting part Connected, the other end of the reinforcing part is connected to the extension part, the thickness of the reinforcement part is greater than the thickness of the extension part, and the thickness of the reinforcement part is greater than the thickness of the support part.
  5. 根据权利要求2所述的具有盖帽支架的电池结构，其中所述电芯包括正极极耳以及负极极耳，所述电芯的正极极耳与所述盖帽连接，所述电芯的负极极耳与所述壳体连接；The battery structure with a cap holder according to claim 2, wherein the battery core includes a positive electrode tab and a negative electrode tab, the positive electrode tab of the battery core is connected to the cap, and the negative electrode tab of the battery core Connected with the housing;
    所述壳体包括与所述盖帽位置相对的底板，所述电芯与所述底板之间设有第一绝缘片，The housing includes a bottom plate opposite to the cap, and a first insulating sheet is provided between the battery core and the bottom plate,
    所述负极极耳一端与所述电芯的负极极片连接，所述负极极耳另一端贯穿所述第一绝缘片，并沿所述底板延伸，One end of the negative pole tab is connected to the negative pole piece of the battery, and the other end of the negative pole tab penetrates the first insulating sheet and extends along the bottom plate,
    所述负极极耳与所述壳体的底板通过从外向内焊接。The negative electrode tab and the bottom plate of the casing are welded from the outside to the inside.
  6. 根据权利要求5所述的具有盖帽支架的电池结构，其中所述底板底端设有第一凹槽；The battery structure with a cap holder according to claim 5, wherein the bottom end of the bottom plate is provided with a first groove;
    所述底板设置有第一泄气通道，所述第一泄气通道将第一凹槽与所述壳体内部连通，用于排出电芯产生的高压气体；The bottom plate is provided with a first air bleed channel, the first air bleed channel communicates the first groove with the inside of the housing, and is used to discharge high-pressure gas generated by the battery cell;
    其中，所述第一凹槽内设有安全阀盖板，所述安全阀盖板通过热熔材料与金属连接件连接。Wherein, a safety valve cover plate is arranged in the first groove, and the safety valve cover plate is connected with a metal connector by a hot melt material.
  7. 根据权利要求1所述的具有盖帽支架的电池结构，其中所述盖帽包括：The battery structure with a cap holder according to claim 1, wherein the cap comprises:
    金属连接件，设置在所述电池壳体的开口一端，并与所述电芯的正极极耳连接；以及，The metal connecting piece is arranged at one end of the opening of the battery casing and connected to the positive electrode tab of the battery; and,
    绝缘塑胶件，环绕设置在所述金属连接件周边，用于将所述金属连接件与所述电池壳体的内壁绝缘防护；An insulating plastic part, which is arranged around the periphery of the metal connector, and is used to insulate and protect the metal connector from the inner wall of the battery casing;
    其中，所述金属连接件中心处设有连接部，所述连接部与所述电芯的正极极耳一端连接。Wherein, a connecting portion is provided at the center of the metal connecting piece, and the connecting portion is connected to one end of the positive electrode tab of the battery core.
  8. 根据权利要求7所述的具有盖帽支架的电池结构，其中所述连接部远离所述电芯的一侧设有防爆结构，用于排出所述电芯产生的高压气体。8. The battery structure with a cap holder according to claim 7, wherein an explosion-proof structure is provided on the side of the connecting portion away from the battery core for discharging the high-pressure gas generated by the battery core.
  9. 根据权利要求8所述的具有盖帽支架的电池结构，其中所述防爆结构包括防爆槽，所述防爆槽从外往内设置在所述金属连接件的连接部。8. The battery structure with a cap holder according to claim 8, wherein the explosion-proof structure comprises an explosion-proof groove, and the explosion-proof groove is arranged at the connection part of the metal connector from the outside to the inside.
  10. 根据权利要求9所述的具有盖帽支架的电池结构，其中所述防爆槽的截面形状为环形、“U”形或线形结构，The battery structure with a cap holder according to claim 9, wherein the cross-sectional shape of the explosion-proof groove is a ring, "U" or linear structure,
    所述防爆槽的开口处截面的长度大于或等于所述防爆槽底端截面的长度。The length of the cross section at the opening of the explosion-proof groove is greater than or equal to the length of the cross section at the bottom end of the explosion-proof groove.
  11. 根据权利要求9所述的具有盖帽支架的电池结构，其中未设置所述防爆槽区域的所述连接部的厚度介于0.2mm～1mm之间，设置所述防爆槽区域的所述连接部的厚度介于0.02mm～0.2mm之间。The battery structure with a cap holder according to claim 9, wherein the thickness of the connection part in the area where the explosion-proof groove is not provided is between 0.2 mm and 1 mm, and the thickness of the connection part in the area where the explosion-proof groove is provided is between 0.2 mm and 1 mm. The thickness is between 0.02mm and 0.2mm.
  12. 根据权利要求9所述的具有盖帽支架的电池结构，其中所述防爆结构包括安全阀盖板和热熔材料；The battery structure with a cap holder according to claim 9, wherein the explosion-proof structure includes a safety valve cover plate and a hot-melt material;
    所述连接部外侧设置有第二凹槽，所述安全阀金属盖设置在所述第二凹槽内，且所述安全阀金属盖通过热熔材料与所述金属连接件连接，所述金属连接件的连接部设置有第二泄气通道，所述第二泄气通道将所述第一凹槽与所述壳体内部连通，用于排出所述电芯产生的高压气体。A second groove is provided on the outside of the connecting portion, the safety valve metal cover is arranged in the second groove, and the safety valve metal cover is connected to the metal connecting piece by a hot melt material, and the metal The connecting part of the connector is provided with a second air bleed channel, which communicates the first groove with the inside of the housing, and is used to discharge the high-pressure gas generated by the battery core.
  13. 根据权利要求12所述的具有盖帽支架的电池结构，其中所述热熔材料优选为热敏热熔胶。The battery structure with a cap holder according to claim 12, wherein the hot-melt material is preferably a heat-sensitive hot-melt adhesive.
  14. 根据权利要求7所述的具有盖帽支架的电池结构，其中所述绝缘塑胶件包裹在所述金属连接件周边，所述绝缘塑胶件包括The battery structure with a cap holder according to claim 7, wherein the insulating plastic part is wrapped around the periphery of the metal connecting part, and the insulating plastic part comprises
    第一端部，设置在所述绝缘塑胶件一端，并位于所述金属连接件一侧，用于将所述金属连接件外侧与所述封口结构隔离并绝缘；The first end is arranged at one end of the insulating plastic part and located on one side of the metal connecting part, and is used to isolate and insulate the outer side of the metal connecting part from the sealing structure;
    第二端部，设置在所述绝缘塑胶件另一端，并位于所述金属连接件另一侧，用于将所述金属连接件内侧与所述支撑部隔离并绝缘，以及，The second end is arranged at the other end of the insulating plastic part and on the other side of the metal connecting part, and is used to isolate and insulate the inner side of the metal connecting part from the support part, and,
    中间连接部，设置在所述绝缘塑胶件中部，所述第一端部通过所述中间连接部与所述第二端部连接，且所述中间连接部环绕设置在所述金属连接件周边，用于将所述金属连接件周边与所述壳体内壁隔离并绝缘。An intermediate connection part arranged in the middle of the insulating plastic part, the first end part is connected to the second end part through the intermediate connection part, and the intermediate connection part is arranged around the periphery of the metal connection part, It is used to isolate and insulate the periphery of the metal connector from the inner wall of the housing.
  15. 根据权利要求7所述的具有盖帽支架的电池结构，其中所述金属连接件与所述绝缘塑胶件为一体成型结构；一体成型的盖帽，结构简单，盖帽成品的厚度小，便于电池装配。7. The battery structure with a cap holder according to claim 7, wherein the metal connector and the insulating plastic part are an integral structure; the integrally formed cap has a simple structure and a small thickness of the finished cap, which is convenient for battery assembly.
  16. 根据权利要求3所述的具有盖帽支架的电池结构，其中所述支撑部与所述延伸部之间的夹角范围介于85°～95°之间。The battery structure with a cap holder according to claim 3, wherein the included angle between the support portion and the extension portion is between 85° and 95°.
  17. 根据权利要求3所述的具有盖帽支架的电池结构，其中所述电池的高与直径比例小于等于1。The battery structure with a cap holder according to claim 3, wherein the ratio of the height to the diameter of the battery is less than or equal to 1.
  18. 根据权利要求2所述的具有盖帽支架的电池结构，其中所述支架为筒状结构，且与所述电芯套接，所述电芯侧壁与所述支架内壁绝缘接触。The battery structure with a cap holder according to claim 2, wherein the holder has a cylindrical structure and is sleeved with the battery core, and the side wall of the battery core is in insulated contact with the inner wall of the holder.
PCT/CN2021/093454 2020-05-12 2021-05-12 Battery structure having cover cap support WO2021228165A1 (en)

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