CN115472975B - Sealing cover plate for battery electrode - Google Patents

Sealing cover plate for battery electrode Download PDF

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Publication number
CN115472975B
CN115472975B CN202211353673.6A CN202211353673A CN115472975B CN 115472975 B CN115472975 B CN 115472975B CN 202211353673 A CN202211353673 A CN 202211353673A CN 115472975 B CN115472975 B CN 115472975B
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CN
China
Prior art keywords
cover plate
channel
battery
plate body
sealing
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CN202211353673.6A
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Chinese (zh)
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CN115472975A (en
Inventor
王炎
陆朝荣
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Jiangsu Jiu'an New Energy Technology Co ltd
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Jiangsu Jiu'an New Energy Technology Co ltd
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Priority to CN202211353673.6A priority Critical patent/CN115472975B/en
Publication of CN115472975A publication Critical patent/CN115472975A/en
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Publication of CN115472975B publication Critical patent/CN115472975B/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 of a single cell or a single battery
    • H01M50/183—Sealing members
    • H01M50/186—Sealing members characterised by the disposition of the sealing members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/147—Lids or covers
    • H01M50/148—Lids or covers characterised by their shape
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/183—Sealing members
    • H01M50/184—Sealing members characterised by their shape or structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/317—Re-sealable arrangements
    • H01M50/325—Re-sealable arrangements comprising deformable valve members, e.g. elastic or flexible valve members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
    • H01M50/367—Internal gas exhaust passages forming part of the battery cover or case; Double cover vent systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

The invention relates to the technical field of batteries, in particular to a sealing cover plate for a battery electrode, which comprises a cover plate body, wherein electrodes are arranged at two ends of the cover plate body, an explosion-proof part is arranged between the electrodes, the cover plate body is tightly clamped on a battery shell, two sides of the cover plate body are connected with the battery shell in a threaded manner, a first channel is arranged on the edge part of the cover plate body, which is close to the end surface of the battery shell, and a second channel corresponding to the first channel is arranged on the battery shell; the inner diameter of the first channel exceeds that of the second channel, the first channel and the second channel are spliced to form the channel, and a sealing piece is arranged in the channel in a plug mode. The device of the invention is configured with the section with smaller width, when in assembly, the upper end of the sealing element is plugged into the section with smaller width, thus the sealing property between the sealing element and the section with smaller width is better, and the sealing element can be detached along with the cover plate body when a maintenance worker detaches the battery.

Description

Sealing cover plate for battery electrode
Technical Field
The invention relates to the technical field of batteries, in particular to a sealing cover plate for a battery electrode.
Background
A lithium ion battery is a secondary battery (rechargeable battery) that mainly operates by movement of lithium ions between a positive electrode and a negative electrode. During charging and discharging, li + is inserted and extracted back and forth between two electrodes: during charging, li + is extracted from the positive electrode and is inserted into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; the opposite is true during discharging; however, the sealing cover plate structure of the conventional lithium ion battery is simple, which results in poor sealing performance, and therefore, the application provides a sealing cover plate for a battery electrode.
Disclosure of Invention
In view of the above-mentioned deficiencies, it is an object of the present invention to provide a sealing cap for a battery electrode.
The invention provides the following technical scheme:
a sealing cover plate for a battery electrode comprises a cover plate body, wherein electrodes are arranged at two ends of the cover plate body, an explosion-proof part is arranged between the electrodes, the cover plate body is tightly clamped on a battery shell, two sides of the cover plate body are connected to the battery shell in a threaded manner, a first channel is formed in the end surface, close to the battery shell, of the edge of the cover plate body, and a second channel corresponding to the first channel is formed in the battery shell; the inner diameter of the first channel exceeds that of the second channel, the first channel and the second channel are spliced to form the channel, and a sealing piece is arranged in the channel in a plug mode.
As a prior technical scheme of a sealing cover plate for a battery electrode, the explosion-proof component comprises a connecting barrel, a movable cylinder and a strain component which penetrate through the connecting barrel, the connecting barrel is arranged on the battery shell, the lower port of the connecting barrel is communicated with a closed space formed by assembling a cover plate body and the battery shell, the movable cylinder can be arranged in the connecting barrel in a vertically movable mode, a plurality of first circular holes are formed in the connecting barrel, the upper port of the connecting barrel is fixedly connected with a shielding plate, and a second circular hole is formed in the shielding plate; the strain component is fixed at the lower end of the connecting barrel and comprises a concave circular corrugated sheet and a mounting column, the circular corrugated sheet is fixed at the lower end port of the lower end of the connecting barrel, and the center of the circular corrugated sheet is connected to the lower end face of the movable column body through the mounting column.
As a prior technical scheme for a sealing cover plate for a battery electrode, a plurality of first mounting grooves are arranged on a cavity surface of a first channel and are arranged in parallel along an X-axis direction, a tension screw is screwed in the first mounting grooves, and a second mounting groove corresponding to the first mounting groove is formed in one side, facing the tension screw, of the sealing element; the upper end of the first ditch is provided with a section with a smaller width.
As a prior technical scheme of a sealing cover plate for a battery electrode, a position stopping sheet is fixedly arranged on the edge part of a cover plate body close to a battery shell, a connecting recess is formed in the end face of the battery shell close to the position stopping sheet, and the position stopping sheet is connected with the connecting recess.
As a prior technical scheme for a sealing cover plate of a battery electrode, a square recess is formed in a stop piece along the X-axis direction, a clamping piece is matched in the square recess, the end, close to a battery shell, of the clamping piece is fixedly connected with a short part, the short part and the clamping piece are arranged at 90 degrees, and a backstop recess is arranged at the lower end, located on the stop piece, of the square recess.
As a prior technical scheme of a sealing cover plate for a battery electrode, the side face of the short part close to the battery shell is provided with a mounting recess, and a cylinder is fixedly connected in the mounting recess.
As a prior technical scheme of a sealing cover plate for a battery electrode, one end of the tensioning screw rod, which is close to the sealing element, is provided with an arc-shaped part.
As a preferred solution for a sealing cap plate for a battery electrode, the arc-shaped portion is provided with a plurality of protrusions.
As a prior technical scheme of the sealing cover plate for the battery electrode, a third mounting groove matched with the end of the tensioning screw is formed in the edge of the cover plate body, and the third mounting groove is communicated with the first mounting groove.
As a preferred technical solution for a sealing cover plate for a battery electrode, the sealing member is provided with engaging portions at both ends in the Y-axis direction, the engaging portions at the upper end and the lower end are fitted in the first channel and the second channel, and one end of the sealing member near the second channel is provided with at least 6 square holes.
The invention has the beneficial effects that: 1. the device of the invention is configured with the interval with smaller width, and when in assembly, the upper end of the sealing element is plugged into the interval with smaller width, so that the sealing property between the sealing element and the interval with smaller width is better, and the sealing element can be detached along with the cover plate body when a maintenance worker detaches the battery; the sealing element is locked in the first channel by configuring the tensioning screw rod, the first mounting groove and the second mounting groove, so that the sealing element is prevented from being easily disengaged;
2. the clamping sheet is used for limiting the sealing element, so that the compactness of the sealing element in the first channel can be improved; in addition, the arc-shaped part is arranged to sharply reduce the connection area between the tensioning screw and the second mounting groove, so that the convenience of mounting the tensioning screw is improved;
3. be equipped with explosion-proof component in this application on the battery case, in case the too big condition of load of gas to the wall appears in the battery, the inside gas load of battery promotes circular corrugated sheet and makes progress protrudingly, is promoting the cylinder rebound that moves about through the erection column this moment, makes circular hole one and the inside intercommunication of battery to can make the inside load of battery release, reduced the accident rate of battery explosion.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic perspective view of the apparatus of the present invention;
FIG. 2 is a cross-sectional view of the battery housing and cover plate in the assembled relationship of the device of the present invention;
FIG. 3 is an enlarged partial schematic view at A in FIG. 2;
FIG. 4 is a schematic structural view of an explosion-proof component;
FIG. 5 is a cross-sectional view of the assembled relationship of the seal members;
FIG. 6 is an enlarged partial schematic view at B of FIG. 5;
FIG. 7 is an enlarged partial schematic view at C of FIG. 5;
FIG. 8 is a schematic structural view of a tension screw;
FIG. 9 is a schematic view of an assembled structure of a clamping piece;
labeled as: 1. a battery case; 2. a cover plate body; 3. an explosion-proof component; 4. a seal member; 5. tensioning the lead screw; 6. a stop sheet; 7. a clamping sheet;
11. a second channel; 12. a connecting recess; 21. a first channel; 22. a section with a smaller width; 23. a first mounting groove; 24. a third mounting groove; 31. a connecting barrel; 301. a first circular hole; 32. a movable column; 33. a strain member; 331. a circular corrugated sheet; 332. mounting a column; 34. a shutter; 341. a second circular hole; 41. a joining section; 42. a square hole; 43. a second mounting groove; 44. stopping the position and sinking; 51. an arc-shaped portion; 52. a protrusion; 61. a square recess; 62. a gear-withdrawing recess; 71. a short portion; 72. mounting a recess; 73. and (4) a cylinder.
Detailed Description
The conception, the specific structure and the technical effects produced by the present invention will be clearly and completely described in the following with reference to the embodiments and the accompanying drawings, so as to fully understand the objects, the schemes and the effects of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. Further, the description of the upper, lower, left, right, etc. used in the present invention is only with respect to the positional relationship of the respective components of the present invention with respect to each other in the drawings.
As shown in fig. 1 to 3, a sealing cover plate for a battery electrode includes a cover plate body 2, electrodes are disposed at two ends of the cover plate body, an explosion-proof component 3 is disposed between the electrodes, the cover plate body 2 is tightly connected to a battery case 1, two sides of the cover plate body 2 are screwed to the battery case 1, an edge of the cover plate body 2 is close to the end face of the battery case 1, a first channel 21 is disposed on the end face of the battery case 1, and the battery case 1 is provided with a second channel 11 corresponding to the first channel 21.
Referring to fig. 3, the inner diameter of the first channel 21 exceeds the inner diameter of the second channel 11, the first channel 21 and the second channel 11 are spliced to form a channel, and the sealing member 4 is disposed in the channel. The sealing element 4 is prepared from a high polymer material, the upper end of the sealing element is matched with the first channel 21 by using the property that the volume can be freely changed, and the interval with the smaller width at the upper end of the first channel 21 forms an angle of 90 degrees with the cover plate body 2, so that the sealing element 4 is attached to the cover plate body 2 when a maintenance worker separates the battery shell 1 from the cover plate body 2. If the cover plate body 2 is joined to the battery case 1, the edge portion of the seal member 4 is projected to fit between the battery case 1 and the cover plate body 2, so that the electrolyte in the battery case 1 can be prevented from leaking out.
As shown in fig. 4, the explosion-proof component 3 includes a connection barrel 31, a movable column 32 and a strain component 33, the connection barrel 31 is disposed on the battery case 1, and the lower port of the connection barrel is communicated with a closed space formed by assembling the cover plate 2 and the battery case 1, the movable column 32 is disposed in the connection barrel 31 in a manner of moving up and down, a plurality of first circular holes 301 are disposed on the connection barrel 31, a shielding plate 34 is fixedly connected to the upper port of the connection barrel 31, and a second circular hole 341 is disposed on the shielding plate 34; the strain member 33 is fixed at the lower end of the connection barrel 31, the strain member 33 includes a concave circular corrugated sheet 331 and a mounting column 332, the circular corrugated sheet 331 is fixed at the lower end of the connection barrel 31, and the center of the circular corrugated sheet 331 is connected to the lower end face of the movable column 32 through the mounting column 332. Under the condition that the battery normally works, the movable column body 32 is located above the first circular hole 301, the battery is a closed space at the moment, once the condition that gas loads on the wall are overlarge in the battery, the gas load in the battery pushes the circular corrugated sheet 331 to protrude upwards, the movable column body 32 is pushed to move upwards through the mounting column 332 at the moment, the first circular hole 301 is communicated with the inside of the battery, and therefore the load in the battery can be released.
As shown in fig. 1, 2 and 5, the sealing member 4 is provided with engaging portions 41 at both ends in the Y-axis direction, and the engaging portions 41 at the upper end and the lower end are fitted in the first channel 21 and the second channel 11, so that the engaging space therebetween is reduced, thereby facilitating the fitting of the sealing member 4 in the first channel 21 and the second channel 11 when the cover plate body 2 and the battery case 1 are assembled.
As shown in fig. 5, the upper end of the first channel 21 is provided with a small-width section 22, and when assembling, the upper end of the sealing member 4 is inserted into the small-width section 22, so that the sealing property between the sections is better, and the sealing member 4 can be detached along with the cover plate body 2 when a maintenance worker detaches the battery.
Referring to fig. 5, at least one square hole 42 is disposed at one end of the sealing member 4 close to the second channel 11, and the square holes 42 are divided into two groups and arranged side by side, so that the volume of the end of the sealing member 4 can be changed more easily, and the sealing member can be matched with the second channel 11 more conveniently. In addition, when the maintenance personnel disassemble the cover plate body 2 and the battery shell 1 conveniently during maintenance, the lower end of the sealing member 4 is more easily detached from the second channel 11.
Referring to fig. 6, a plurality of first mounting grooves 23 are formed in the cavity surface of the first channel 21 and are parallel to each other along the X-axis direction, and a tension screw 5 is threaded into each first mounting groove 23. One side of the sealing element 4 facing the tension screw 5 is provided with a second mounting groove 43 corresponding to the first mounting groove 23, and the second mounting groove 43 is convenient for abutting against the end of the tension screw 5, so that the distribution of the sealing element 4 in the first channel 21 is clamped, and the filling property of the sealing element 4 in the first channel 21 is further improved. The width of the second mounting groove 43 exceeds the diameter of the end of the tension lead screw 5, so that the end of the tension lead screw 5 is matched in the second mounting groove 43.
Referring to fig. 6, a third mounting groove 24 matched with the end of the tension screw 5 is formed in an edge portion of the cover plate body 2, and the third mounting groove 24 is communicated with the first mounting groove 23 and can be assembled at the end of the tension screw 5, so as to further reduce the usage space of the tension screw 5 for using the battery housing 1.
As shown in fig. 6 and 8, an arc portion 51 is disposed at one end of the tension screw 5 close to the sealing member 4, and the arc portion 51 sharply reduces a connection area between the tension screw 5 and the second mounting groove 43, so as to increase the convenience of mounting the tension screw 5.
As shown in fig. 6 and 8, the arc-shaped portion 51 is provided with a plurality of protrusions 52, which can increase or decrease the damping effect between the tension screw 5 and the sealing member 4, thereby increasing the clamping effect of the tension screw 5 on the sealing member 4 in the first trench 21.
As shown in fig. 7, the cover plate body 2 is fixedly provided with a stopper piece 6 near the side portion of the battery case 1, so that the seal member 4 can be locked in the first groove 21. Battery case 1 is last to be close to the terminal surface of ending position piece 6 has seted up and has connected sunken 12, end position piece 6 link up in connect sunken 12, increased the closely knit nature between apron plate body 2 and the battery case 1.
A square recess 61 is formed in the stop piece 6 along the X-axis direction, and a clamping piece 7 is matched in the square recess 61. One side of the sealing element 4 close to the square recess 61 is provided with a stop recess 44, and the stop recess 44 is arranged below the first mounting groove 23, so that convenience is provided for the insertion of one end of the clamping piece 7, and the compactness of the sealing element 4 in the first channel 21 is increased.
As shown in fig. 7 to 9, the clamping piece 7 is fixedly connected with a short portion 71 near the end of the battery case 1, and the short portion 71 is arranged at 90 degrees to the clamping piece 7. The stopping sheet 6 is provided with a stopping recess 62 at the lower end of the square recess 61, the stopping recess 62 is convenient for the short portion 71 to be connected, the short portion 71 and the stopping sheet 6 are flush in the Y-axis direction, and after the stopping sheet 6 is connected into the connecting recess 12, the end of the clamping sheet 7 far away from the short portion 71 is locked in the stopping recess 44.
As shown in fig. 9, the short portion 71 is provided with a mounting recess 72 near the side of the battery housing 1, and a cylinder 73 is fixed in the mounting recess 72. When the maintenance personnel need to remove the sealing member 4, the short portion 71 can be withdrawn from the stopping recess 62 by engaging the cylindrical portion 73 with the bent connecting member, so that the clamping piece 7 can be removed from the stopping recess 44.
The working principle of the device of the invention is as follows:
the upper end of the seal 4 is fitted into the first channel 21, and the upper end of the seal 4 is fitted into the small-width section 22, so that it is prevented from separating from the first channel 21 by its own mass. The stopper recess 44 may be made to correspond to the square recess 61 by changing the contact state of the packing 4 and the stopper 6. The tension screw 5 is close to one end of the third installation groove 24 corresponding to the first installation groove 23 and is screwed and plugged, so that the arc-shaped part 51 is connected into the stop recess 44. The clamping piece 7 is inserted into the square recess 61, and a head portion in the X-axis direction thereof is inserted into the stopping recess 44, so that the short portion 71 is closely matched with the backstop recess 62.
The end of the sealing element 4 is plugged into the second groove 11, and the stop piece 6 is engaged with the connecting recess 12, so that the compactness between the cover plate body 2 and the battery shell 1 is increased. When the battery shell 1 and the cover plate body 2 are separated, the sealing element 4 is attached to the cover plate body 2, so that the battery shell is convenient for maintenance personnel to assemble later.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The sealing cover plate for the battery electrode is characterized by comprising a cover plate body (2), electrodes are arranged at two ends of the cover plate body, an explosion-proof part (3) is arranged between the electrodes, the cover plate body (2) is tightly clamped on a battery shell (1), two sides of the cover plate body (2) are connected to the battery shell (1) in a threaded manner, a first channel (21) is formed in the edge part of the cover plate body (2) close to the end face of the battery shell (1), and a second channel (11) corresponding to the first channel (21) is formed in the battery shell (1); the inner diameter of the first channel (21) exceeds that of the second channel (11), the first channel (21) and the second channel (11) are spliced to form a channel, and a sealing element (4) is arranged in the channel in a plugging mode.
2. The sealing cover plate for the battery electrode according to claim 1, wherein the explosion-proof component (3) comprises a connecting barrel (31), a movable cylinder (32) and a strain component (33) which penetrate through the connecting barrel, the connecting barrel (31) is arranged on the battery shell (1), the lower port of the connecting barrel is communicated with a closed space formed by assembling a cover plate body (2) and the battery shell (1), the movable cylinder (32) can be arranged in the connecting barrel (31) in a vertically moving mode, a plurality of first circular holes (301) are formed in the connecting barrel (31), a shielding plate (34) is fixedly connected to the upper port of the connecting barrel (31), and a second circular hole (341) is formed in the shielding plate (34); the strain component (33) is fixed at the lower end of the connecting barrel (31), the strain component (33) comprises a concave circular corrugated sheet (331) and a mounting column (332), the circular corrugated sheet (331) is fixed at the lower port of the lower end of the connecting barrel (31), and the center of the circular corrugated sheet is connected to the lower end face of the movable column (32) through the mounting column (332).
3. The sealing cover plate for the battery electrode according to claim 1, wherein a plurality of first mounting grooves (23) are formed in the cavity surface of the first channel (21) and are arranged in parallel along the X-axis direction, a tensioning screw (5) is screwed in the first mounting grooves (23), and a second mounting groove (43) corresponding to the first mounting groove (23) is formed in one side, facing the tensioning screw (5), of the sealing element (4); the upper end of the first channel (21) is provided with a section (22) with a smaller width.
4. The sealing cover plate for the battery electrode according to claim 1, wherein a stop piece (6) is fixedly arranged on the cover plate body (2) near the edge of the battery shell (1), a connecting recess (12) is formed in the end surface of the battery shell (1) near the stop piece (6), and the stop piece (6) is connected with the connecting recess (12).
5. The sealing cover plate for the battery electrode according to claim 4, characterized in that a square recess (61) is formed in the stop sheet (6) along the X-axis direction, a clamping sheet (7) is matched in the square recess (61), a short portion (71) is fixedly connected to the end of the clamping sheet (7) close to the battery shell (1), the short portion (71) and the clamping sheet (7) are arranged at 90 degrees, and a backstop recess (62) is arranged on the stop sheet (6) and at the lower end of the square recess (61).
6. The sealing cover plate for battery electrodes as claimed in claim 5, characterized in that the short portion (71) is provided with a mounting recess (72) near the edge face of the battery case (1), and a cylinder (73) is fixedly connected in the mounting recess (72).
7. The sealing cover plate for battery electrodes as claimed in claim 3, characterized in that the tension screw (5) is provided with an arc-shaped part (51) at one end close to the sealing element (4).
8. The sealing cap plate for battery electrodes according to claim 7, characterized in that the arc-shaped portion (51) is provided with a plurality of protrusions (52).
9. The sealing cover plate for the battery electrode according to claim 7, wherein a third mounting groove (24) matched with the end of the tension screw rod (5) is formed in an edge portion of the cover plate body (2), and the third mounting groove (24) is communicated with the first mounting groove (23).
10. The sealing cover plate for battery electrodes according to claim 1, characterized in that the sealing member (4) is provided with engaging portions (41) at both ends in the Y-axis direction, the engaging portions (41) at the upper and lower ends are fitted in the first and second channels (21, 11), and at least 6 square holes (42) are provided at one end of the sealing member (4) near the second channel (11).
CN202211353673.6A 2022-11-01 2022-11-01 Sealing cover plate for battery electrode Active CN115472975B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211353673.6A CN115472975B (en) 2022-11-01 2022-11-01 Sealing cover plate for battery electrode

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Application Number Priority Date Filing Date Title
CN202211353673.6A CN115472975B (en) 2022-11-01 2022-11-01 Sealing cover plate for battery electrode

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CN115472975A CN115472975A (en) 2022-12-13
CN115472975B true CN115472975B (en) 2023-03-24

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Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202839806U (en) * 2012-08-09 2013-03-27 张灵杰 Novel storage battery
US11909055B2 (en) * 2018-09-25 2024-02-20 Panasonic Holdings Corporation Secondary battery
CN213660511U (en) * 2020-12-15 2021-07-09 合肥国轩高科动力能源有限公司 Square shell lithium battery stopping frame
CN216903149U (en) * 2022-01-04 2022-07-05 上海桔晟科技有限公司 Battery cover plate assembly and battery
CN216903141U (en) * 2022-01-10 2022-07-05 上海桔晟科技有限公司 Battery cover plate assembly and battery

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