CN217788584U

CN217788584U - Cover plate and battery

Info

Publication number: CN217788584U
Application number: CN202221934390.6U
Authority: CN
Inventors: 黄智博; 杨道均; 何勤求
Original assignee: Sany Group Co Ltd
Current assignee: Sany Hongxiang Battery Co ltd
Priority date: 2022-07-26
Filing date: 2022-07-26
Publication date: 2022-11-11
Anticipated expiration: 2032-07-26

Abstract

The utility model relates to a battery manufacturing technology field, concretely relates to apron and battery. The cover plate includes: a pole having a projection; the top cover is provided with a first mounting hole, a limiting part and a fixing part, and the limiting part is provided with a notch; after the pole is placed into the first mounting hole, the protruding portion is matched with the notch, the fixing portion is matched with the pole, and the protruding portion is limited through the rotating limiting portion of the pole. The utility model discloses with spacing portion and fixed part integration on the top cap, spacing portion and fixed part and top cap integrated into one piece promptly, remove the process that the connection piece adopted fixed modes such as welding to fix on the top cap from, technological process is simple, is favorable to reduce cost to integrated into one piece's sound construction is reliable, can guarantee the stability of utmost point post installation, thereby guarantees production quality.

Description

Cover plate and battery

Technical Field

The utility model relates to a battery manufacturing technology field, concretely relates to apron and battery.

Background

At present, the application field of the battery is wider and wider, and the safety of the battery is not negligible. In order to ensure the sealing ring and the insulation property of the pole and the top cover of a common rechargeable battery, components such as an insulating part and a sealing part are added, and the components of the parts have strict requirements on the air tightness; meanwhile, the pole is fixed on the cover plate through modes such as connecting sheet welding and the like, and then the pole is fixed on the cover plate through the connecting sheet, so that the difficulty and the cost of the process are improved.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the connection piece welding among the prior art and causing the big and with high costs defect of the technology degree of difficulty that utmost point post is fixed on the apron to a apron and battery are provided.

In order to solve the above problem, the utility model provides an apron includes: a pole having a protrusion; the top cover is provided with a first mounting hole, a limiting part and a fixing part, and the limiting part is provided with a notch; after the pole is placed into the first mounting hole, the protruding portion is matched with the notch, the fixing portion is matched with the pole, and the protruding portion is limited through the rotating limiting portion of the pole.

Optionally, the cover plate further comprises a sealing element disposed between the pole and the fixing portion to seal the pole and the top cover.

Optionally, the cover plate further comprises an insulating piece, and the insulating piece is sleeved on the pole and matched with the hole wall and the limiting part of the first mounting hole.

Optionally, the insulating member is injection-molded between the pole and the top cap and on the surface of the limiting portion.

Optionally, a plurality of liquid injection limiting holes are formed in the limiting portion, and the insulating part is provided with limiting columns matched with the liquid injection limiting holes.

Optionally, the limiting part is located above the fixing part.

Optionally, a position marking part for judging that the pole rotates to the position is arranged on the top surface of the pole.

Optionally, the position marking portion is a long groove, and when the pole rotates to the position, the extending direction of the long groove is parallel to the length direction of the top cover.

Optionally, the cover plate further comprises an insulating plate, the insulating plate is arranged on the lower surface of the top cover, the insulating plate is provided with a through hole corresponding to the pole and a matching surface located on the circumferential outer side of the through hole, the lower surface of the pole and the matching surface are in the same plane, or the lower surface of the pole is higher than the matching surface.

The utility model also provides a battery, including foretell apron.

The utility model has the advantages of it is following:

1. when installing utmost point post, put into first mounting hole with utmost point post after, bulge and breach cooperation, fixed part and utmost point post cooperation, then with the rotatory certain angle of utmost point post, spacing bulge of spacing portion, with spacing portion and fixed part integration on the top cap, spacing portion and fixed part and top cap integrated into one piece promptly, remove the process that the connection piece adopted fixed modes such as welding to fix on the top cap from, the technological process is simple, be favorable to reduce cost, and integrated into one piece's sound construction is reliable, can guarantee the stability of utmost point post installation, thereby guarantee production quality.

2. The apron still includes the sealing member, and the sealing member setting is between utmost point post and fixed part to sealed utmost point post and top cap, the sealing member plays sealed effect, prevents that outside foreign matter from getting into the battery inside or electrolyte flows, and can prevent that utmost point post from appearing rocking in the mounting hole, also can realize the insulation between utmost point post and the top cap, prevents electric core and top cap short circuit, the security of guarantee battery.

3. The cover plate further comprises an insulating piece, and the insulating piece is sleeved on the pole and matched with the hole wall and the limiting part of the first mounting hole. The arrangement of the insulating part can realize the electrical insulation between the pole and the top cover, prevent the short circuit between the battery core and the top cover and ensure the safety of the battery; the outer peripheral face of insulating part parcel utmost point post only remains the upper surface and the external circuit electricity of utmost point post and is connected, prevents that spacing portion and external circuit misconnection from causing top cap and external circuit short circuit.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is an exploded view of a cover plate according to a first embodiment of the present invention;

FIG. 2 shows a pole schematic of the cover plate of FIG. 1;

FIG. 3 shows an exploded schematic view of the top cap and insulator of the cover plate of FIG. 1;

FIG. 4 shows a schematic cross-sectional view of the cover plate of FIG. 1 after assembly;

FIG. 5 shows a partial schematic view of the cover plate of FIG. 4;

FIG. 6 shows a partial schematic view of the cover plate of FIG. 4;

FIG. 7 shows an exploded schematic view of the top cover, seal and post of the cover plate of FIG. 1;

FIG. 8 shows a partial schematic view of the seal and post of FIG. 6 placed in a first mounting hole of a top cover;

figure 9 shows a schematic view of the pole of figure 7 after rotation through 90 degrees;

FIG. 10 shows a schematic view of the post and cap of FIG. 8 with the insulator injection molded;

fig. 11 shows a schematic cross-sectional view of a cover plate according to a second embodiment of the present invention;

FIG. 12 shows a partial schematic view of the cover plate of FIG. 11;

FIG. 13 shows a partial schematic view of the cover plate of FIG. 11;

fig. 14 shows a schematic perspective view of a battery according to an embodiment of the present invention;

fig. 15 is a schematic perspective view illustrating a battery module according to an embodiment of the present invention;

fig. 16 is an exploded view of a battery pack according to an embodiment of the present invention.

Description of reference numerals:

10. a pole column; 11. a negative pole post; 111. a first column; 112. a second cylinder; 12. a positive post; 13. a projection; 14. a long groove; 20. a top cover; 21. a first mounting hole; 23. a second mounting hole; 24. a liquid injection hole; 25. a limiting part; 251. a liquid injection limiting hole; 26. a fixed part; 30. a seal member; 31. a first seal member; 32. a second seal member; 40. an explosion-proof structure; 41. an explosion-proof membrane; 42. an explosion-proof valve; 50. an insulating plate; 51. a through hole; 52. a mating surface; 80. an insulating member; 81. a first insulating member; 82. a second insulating member; 83. a limiting post; 90. a battery; 100. a battery module; 120. a lower housing; 130. and an upper housing.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Example one

As shown in fig. 1 to 6, the cover plate of the present embodiment includes: a pole post 10 and a top cover 20, the pole post 10 having a projection 13; the top cover 20 has a first mounting hole 21, a limiting part 25 and a fixing part 26, wherein the limiting part 25 has a notch; after the pole 10 is placed in the first mounting hole 21, the protruding portion 13 is matched with the notch, the fixing portion 26 is matched with the pole 10, and the rotation limiting portion 25 of the pole 10 is limited with the protruding portion 13. Wherein, up and down refer to the directions of "up and down" indicated by the arrows in fig. 4.

Use the apron of this embodiment, during installation utmost point post 10, after putting into first mounting hole 21 with utmost point post 10, bulge 13 and breach cooperation, fixed part 26 and utmost point post 10 cooperation, then with utmost point post 10 rotatory certain angle, spacing bulge 13 of spacing portion 25, it is integrated on top cap 20 with spacing portion 25 and fixed part 26, spacing portion 25 and fixed part 26 and top cap 20 integrated into one piece promptly, remove the process that fixed modes such as connection piece adoption welding were fixed on top cap 20 from, the technological process is simple, be favorable to reduce cost, and integrated into one piece's sound construction is reliable, can guarantee the stability of utmost point post installation, thereby guarantee production quality.

In this embodiment, the cover plate further includes a sealing element 30, the sealing element 30 is disposed between the terminal 10 and the fixing portion 26 to seal the terminal 10 and the top cover 20, the sealing element 30 plays a role in sealing, prevents external foreign matters from entering the inside of the battery or the electrolyte from flowing out, prevents the terminal 10 from shaking in the mounting hole, can also realize insulation between the terminal 10 and the top cover 20, prevents short circuit between the battery core and the top cover 20, and ensures the safety of the battery.

In this embodiment, the cover plate further includes an insulating member 80, and the insulating member 80 is sleeved on the pole post 10 and is matched with the hole wall of the first mounting hole 21 and the limiting portion 25. The insulating part 80 can realize the electrical insulation between the pole and the top cover 20, prevent the short circuit between the cell and the top cover 20 and ensure the safety of the battery; the insulating part 80 wraps the peripheral surface of the pole 10, only the upper surface of the pole is kept to be electrically connected with an external circuit, and the short circuit between the top cover 20 and the external circuit caused by the mistaken connection of the limiting part 25 and the external circuit is prevented. Preferably, the insulating part 80 is also wrapped on the outer side of the limiting part 25, namely the insulating part 80 wraps the limiting part 25 completely, so that the reliability of the subsequent mechanical property is ensured.

In the present embodiment, the insulating member 80 is injection molded between the pole post 10 and the top cap 20 and on the surface of the stopper portion 25. Insulating part 80 adopts injection moulding can wrap up the utmost point post betterly and fill in the space between top cap and utmost point post, and insulating part 80 also wraps up spacing portion 25, and injection moulding technical maturity, processing are simple, are favorable to improving work efficiency. It is understood that the insulator 80 may alternatively be injection molded separately and then assembled.

In this embodiment, as shown in fig. 3, a plurality of liquid injection limiting holes 251 are formed in the limiting portion 25, the insulating part 80 is provided with a limiting column 83 matched with the liquid injection limiting holes 251, when the insulating part 80 is injection-molded, injection-molding liquid is injected between the pole 10 and the top cover 20 through the liquid injection limiting holes 251 and a gap between the pole 10 and the limiting portion 25, the liquid injection limiting holes 251 can facilitate injection-molding liquid injection, after the injection-molding liquid is solidified, the part of the insulating part 80 located in the liquid injection limiting holes 251 forms the limiting column, the limiting column can limit the insulating part 80, and the anti-torsion performance is good. The setting of annotating liquid spacing hole 251 can guarantee the infiltration that insulating part 80 liquid can be better when moulding plastics, and the mobility of the liquid of moulding plastics is good, and the spacing post forms the interlude structure of the spacing portion of interlude metal material after the completion of moulding plastics simultaneously, improves whole mechanical properties.

In this embodiment, the limiting portion 25 is located above the fixing portion 26, and the pole 10 and the sealing member are assembled from the top of the top cover 20 during assembly, so that assembly is convenient, and assembly efficiency is improved. It will be appreciated that as an alternative embodiment, the limiting portion 25 is located below the fixing portion 26, and when assembled, the top cover 20 is turned upside down, and then the pole 10 and the sealing member are assembled on the top cover 20.

Specifically, the limiting portion 25 includes an axial portion and a radial portion, the axial portion is disposed along the vertical direction and protrudes out of the upper surface of the top cap 20, the radial portion is disposed at the upper end of the axial portion and is formed by extending the axial portion toward the center of the first mounting hole, the radial portion is adapted to limit the pole 10 from moving upward, and the through hole is disposed on the radial portion. Preferably, the axial portion and the radial portion are each arcuate.

In the present embodiment, as shown in fig. 2, a position indicating portion for determining that the pole 10 is rotated to the position is provided on the top surface of the pole 10. The arrangement of the position marking part is convenient for workers to judge whether the pole rotates in place. Specifically, the position indication portion is an elongated slot 14, and when the pole 10 is rotated to the proper position, the extending direction of the elongated slot 14 is parallel to the length direction of the top cover 20. When the pole 10 is placed in the first mounting hole 21 and does not rotate, the extending direction of the long groove 14 is perpendicular to the length direction of the top cover 20, the gap is arranged close to the long edge of the top cover 20, and the pole 10 is rotated by 90 degrees and then is in place. The long grooves 14 are kidney-shaped grooves or rectangular grooves. It will be appreciated that the position indication portion may alternatively be an indicator sticker, an indicator arrow, or the like.

In the present embodiment, as shown in fig. 1, 5 and 6, the cover plate further includes an insulating plate 50, the insulating plate 50 is disposed on the lower surface of the top cap 20, the insulating plate 50 has a through hole 51 corresponding to the pole 10 and a mating surface 52 located outside the through hole 51 in the circumferential direction, and the lower surface of the pole 10 is higher than the mating surface 52. The insulating plate 50 electrically insulates the top cap 20 from the outer shell of the cell, improving its safety. The cover plate further comprises a conductive connecting sheet (not shown in the figure), the conductive connecting sheet is attached to the lower surface of the pole, the conductive connecting sheet is provided with a boss extending into the through hole 51, and the top surface of the boss is in contact with the lower surface of the pole.

In this embodiment, the cover plate further includes an explosion-proof structure 40, the top cover 20 has a second mounting hole 23, the explosion-proof structure 40 is mounted at the second mounting hole 23, and the explosion-proof structure 40 explodes when the gas pressure inside the battery increases due to gas generation, so as to release the pressure inside the battery, prevent the battery from exploding due to excessive internal gas pressure, and improve the safety of the battery.

Specifically, the explosion-proof structure 40 includes an explosion-proof valve 42 and an explosion-proof membrane 41, the explosion-proof membrane 41 is disposed above the explosion-proof valve 42, the explosion-proof valve 42 is a metal sheet, preferably an aluminum sheet, the explosion-proof membrane 41 can be made of a plastic material such as a blue membrane, and the explosion-proof membrane 41 covers the explosion-proof valve 42 for protecting the explosion-proof valve 42. The shapes of the explosion-proof membrane 41 and the explosion-proof valve 42 are matched with the structure of the second mounting hole 23, and the mounting positions of the second mounting hole 23 and the explosion-proof structure 40 can be adjusted correspondingly according to different batteries.

In this embodiment, as shown in fig. 5, the fixing portion 26 is formed by extending the inner wall of the first mounting hole 21 to the center thereof, and the fixing portion 26 supports the lower surface or the step surface of the pole 10 to limit the pole to move downward, so that the pole is limited along different directions by the cooperation of the fixing portion 26 and the limiting portion 25, the function of fixing the pole is achieved, and the stability of the structure is ensured.

Specifically, as shown in fig. 1 and 4, the two poles 10 on the top cover 20 are respectively a positive pole 12 and a negative pole 11, the number of the first mounting holes 21 is also two and respectively a positive pole mounting hole and a negative pole mounting hole, the positive pole mounting hole and the negative pole mounting hole are arranged at an interval, wherein the negative pole 11 is used for being connected with a negative pole tab of an electric core, the positive pole 12 is used for being connected with the positive pole tab of the electric core, the pole is made of metal, generally, the negative pole 11 is made of aluminum alloy or copper-aluminum alloy, and the positive pole 12 is made of aluminum alloy. It is understood that the material of the negative electrode tab 11 may be the same as that of the positive electrode tab 12, and may be aluminum alloy or copper-aluminum alloy.

Preferably, the negative electrode tab 11 includes a first tab 111 and a second tab 112 connected, and the first tab 111 and the second tab 112 are made of different materials, in other words, the negative electrode tab 11 is made of two metal materials. It is understood that the negative electrode tab 11 may be made of a metal material.

Specifically, the number of the sealing members 30 is two and is a first sealing member 31 and a second sealing member 32, respectively, the first sealing member 31 being disposed between the negative electrode post 11 and the top cap 20, and the second sealing member 32 being disposed between the positive electrode post 12 and the top cap 20. It will be appreciated that as an alternative embodiment, when one pole is integrally formed with the cap, a seal is provided between the other pole and the cap, in which case the number of seals is one.

Specifically, the number of the insulating members 80 is two and is a first insulating member 81 and a second insulating member 82, respectively, the first insulating member 81 being disposed between the negative post 11 and the top cap 20, and the second insulating member 82 being disposed between the positive post 12 and the top cap 20.

In the present embodiment, the first sealing member 31, the second sealing member 32, the insulating plate 50, the first insulating member 81, and the second insulating member 82 are made of plastic.

In the present embodiment, the number of the protruding portions 13 and the notches are two and are disposed oppositely, and the two notches are disposed along the width direction of the top cover 20. It will be appreciated that as an alternative embodiment, one indentation may be provided, in which case one protrusion 13 is provided.

The assembly process of the cover plate will be described with reference to fig. 7 to 10:

1. placing the sealing member 30 into the first mounting hole 21 of the top cover 20, the sealing member 30 being supported on the fixing portion 26;

2. the convex part 13 of the pole 10 is matched with the notch of the limiting part 25, and the pole 10 is placed in the first mounting hole 21;

3. the pole 10 is placed in the top cover 20 and then rotated by 90 degrees, and whether the pole rotates to the position or not can be judged by utilizing a kidney-shaped groove at the center of the pole 10;

4. the insulating part 80 is moulded plastics between the surface of utmost point post 10 and top cap 20, and wherein, two limit structure can be designed to the mould during injection moulding, and two limit structure carry on spacingly and carry on spacingly to the appearance of top cap 20 to the waist type groove of the center department of utmost point post respectively, guarantee the relative position of utmost point post and top cap in the in-process of moulding plastics.

Example two

As shown in fig. 11 to fig. 13, the difference between the cover plate of the second embodiment and the first embodiment is whether the lower surface of the post is higher than the matching surface 52, in the second embodiment, the lower surface of the post 10 and the matching surface 52 are in the same plane, that is, the lower surface of the post 10 is flush with the matching surface 52, the guide connecting piece does not need to be provided with a boss, the structure of the conductive connecting piece is simplified, the processing and manufacturing are convenient, and the cost is reduced.

In this embodiment, positive post 12 includes upper and lower post segments, and the bulge portion is provided on the upper post segment, and the external diameter of upper post segment is greater than the external diameter of lower post segment, and lower post segment is located the through-hole of fixed part and in the through-hole 51 of insulation board 50.

The utility model also provides a battery, it includes foretell apron. The limiting part 25 and the fixing part 26 are integrally designed with the top cover 20, so that the process difficulty and cost in the manufacturing process are reduced, and the utilization rate of materials is improved.

In this embodiment, as shown in fig. 14, the battery further includes a casing and a plurality of battery cells, the casing has an opening, a cover plate is covered at the opening, the casing and the cover plate enclose a containing cavity for containing the battery cells, the cover plate is used for sealing the casing of the battery, and the cover plate and the casing can be connected in a sealing manner by welding.

In this embodiment, the top cover 20 is provided with a pour hole 24, and the electrolyte is poured into the case through the pour hole 24.

The utility model also provides a battery module, as shown in fig. 15, it includes a plurality of foretell batteries 90, and a plurality of batteries 90 assemble and form rectangular battery module 100.

The utility model also provides a battery pack, as shown in fig. 16, it includes casing 120, last casing 130 down and sets up a plurality of battery module 100 in the cavity that casing 120 and last casing 130 enclose down.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

1. the appearance to utmost point post 10 is processed and is formed bulge 13, has seted up the breach on the spacing portion 25 of top cap 20, and bulge 13 and breach cooperation, after first mounting hole 21 was put into to sealing member 30, put into utmost point post 10 after the bulge 13 of utmost point post 10 and the breach cooperation of top cap 20, utmost point post 10 put into the back rotatory 90 for bulge 13 of utmost point post 10 forms spacingly with the spacing portion 25 of top cap 20, then at utmost point post 10's surface injection moulding insulating part 80. Utilize self rotation before utmost point post 10 is fixed and bulge 13 and spacing portion 25 cooperation can realize the stable fixed of utmost point post, spacing portion 25, fixed part 26 set up with top cap 20 is integrative, remove the process that the connection piece adopted fixed modes such as welding to fix to the top cap from, simplify the process, reduction in production cost.

2. The liquid injection limiting hole 251 is machined in the limiting portion 25, and when the insulating part 80 is injection-molded, injection-molded liquid flows into the liquid injection limiting hole 251 to form the limiting column 83, so that the limiting column 83 is embedded into the top cover 20, the limiting column 83 is matched with the liquid injection limiting hole 251 to limit the insulating part 80, and the torsion resistance of the insulating part is improved.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. A cover plate, comprising:

a pole (10) having a projection (13);

the top cover (20) is provided with a first mounting hole (21), a limiting part (25) and a fixing part (26), and the limiting part (25) is provided with a notch;

wherein, utmost point post (10) are put into behind first mounting hole (21), bulge (13) with the breach cooperation, fixed part (26) with utmost point post (10) cooperation, through the rotation of utmost point post (10) spacing portion (25) are spacing bulge (13).

2. The cover plate according to claim 1, characterized in that it further comprises a sealing element (30), said sealing element (30) being arranged between said pole (10) and said fixing portion (26) to seal said pole (10) and said top cover (20).

3. The cover plate according to claim 1, further comprising an insulating member (80), wherein the insulating member (80) is sleeved on the pole (10) and is matched with the hole wall of the first mounting hole (21) and the limiting portion (25).

4. The cover plate according to claim 3, characterized in that the insulator (80) is injection-moulded between the pole (10) and the top cover (20) and on the surface of the stop (25).

5. The cover plate according to claim 3, wherein the limiting portion (25) is provided with a plurality of liquid injection limiting holes (251), and the insulating member (80) is provided with limiting posts (83) matched with the liquid injection limiting holes (251).

6. The cover plate as claimed in one of claims 1 to 5, characterized in that the limiting portion (25) is located above the fixing portion (26).

7. The cover plate according to any one of claims 1 to 5, wherein a position indication part for judging that the pole (10) is rotated to a position is arranged on the top surface of the pole (10).

8. The cover plate according to claim 7, characterized in that the position indication part is an elongated slot (14), and when the pole (10) is rotated to a position, the elongated slot (14) extends in a direction parallel to the length direction of the top cover (20).

9. The cover plate according to any one of claims 1 to 5, further comprising an insulating plate (50), wherein the insulating plate (50) is disposed on a lower surface of the top cap (20), wherein the insulating plate (50) has a through hole (51) corresponding to the pole (10) and a mating surface (52) located outside a circumferential direction of the through hole (51), and wherein the lower surface of the pole (10) is in the same plane as the mating surface (52), or wherein the lower surface of the pole (10) is higher than the mating surface (52).

10. A battery comprising the cap plate according to any one of claims 1 to 9.