阅读说明：本技术 导电极柱不脱落结构成型工艺、极柱结构及电池盖板 (Forming process of non-falling structure of conductive pole column, pole column structure and battery cover plate ) 是由 王有生 丁朝阳 丁坤 于 2018-07-12 设计创作，主要内容包括：本发明提供一种导电极柱不脱落结构成型工艺、极柱结构及电池盖板,所述工艺包括步骤：S1、成型极柱,获得带有支撑盘体的极柱；S2、极柱包胶,在所述极柱的支撑盘体外周包胶成型得到密封圈,形成包胶极柱；S3、成型固定环,获取用于固定所述极柱的固定环；S4、固定环包胶,在所述固定环上包胶成型得到包胶内环,形成包胶固定环；S5、组装焊接,组装所述包胶极柱与所述包胶固定环,并安装到顶盖板；S6、成品。本发明通过包胶极柱、包胶固定环及顶盖半成品同时进行预制,再进行组装,加快了电池盖板的生产速度。(The invention provides a forming process of a non-falling structure of a conductive pole column, a pole column structure and a battery cover plate, wherein the process comprises the following steps: s1, forming the pole to obtain the pole with a supporting disc body; s2, encapsulating the pole, and encapsulating and forming the periphery of the support disc body of the pole to obtain a sealing ring to form an encapsulated pole; s3, forming a fixing ring to obtain a fixing ring for fixing the pole; s4, encapsulating the fixing ring, and encapsulating the fixing ring to obtain an encapsulated inner ring to form an encapsulated fixing ring; s5, assembling and welding, namely assembling the encapsulated pole and the encapsulated fixing ring, and mounting the encapsulated pole and the encapsulated fixing ring to a top cover plate; and S6, finishing. According to the invention, the encapsulated pole, the encapsulated fixing ring and the semi-finished product of the top cover are prefabricated at the same time and then assembled, so that the production speed of the battery cover plate is increased.)

1. A forming process of a non-falling structure of a conductive electrode column is characterized by comprising the following steps:

s1, forming the pole to obtain the pole with a supporting disc body;

s2, encapsulating the pole, and encapsulating and forming the periphery of the support disc body of the pole to obtain a sealing ring to form an encapsulated pole;

s3, forming a fixing ring to obtain a fixing ring for fixing the pole;

s4, encapsulating the fixing ring, and encapsulating the fixing ring to obtain an encapsulated inner ring to form an encapsulated fixing ring;

s5, assembling and welding, namely assembling the encapsulated pole and the encapsulated fixing ring, and mounting the encapsulated pole and the encapsulated fixing ring to a top cover plate;

and S6, finishing.

2. The process for forming a structure of a conductive post without falling off as claimed in claim 1, wherein an annular notch is formed on the outer edge of the upper surface of the supporting plate body, the post is encapsulated, and a sealing ring is encapsulated and formed on the outer periphery of the supporting plate body of the post, comprising the steps of:

the sealing ring is obtained by encapsulating and forming along the annular notch on the supporting disk body, the outer periphery of the supporting disk body and the lower surface of the supporting disk body;

and a sealing part is formed on the lower surface of the sealing ring.

3. The process for forming a structure of a conductive pole without falling off according to claim 1 or 2, wherein the fixing ring is encapsulated and the fixing ring is encapsulated, comprising the steps of:

an annular inner bulge is formed on the fixing ring, and a plurality of positioning holes are formed on the annular inner bulge;

the outer periphery of the rubber-coated inner ring is internally and convexly formed into an annular groove corresponding to the annular part, and a plurality of positioning columns corresponding to the positioning holes are formed in the annular groove;

the lower part of the outer periphery of the fixing ring is formed into a positioning ring body.

4. The process for forming a structure of a conductive pole without falling off according to claim 1 or 2, wherein the fixing ring is encapsulated, an encapsulated inner ring is obtained by encapsulating and forming on the fixing ring, and the step of forming the encapsulated fixing ring comprises the steps of:

welding a rupture disk on the top cover plate of the reserved pole mounting hole and the rupture hole and detecting the air tightness to obtain a semi-finished top cover;

utmost point post mounting hole periphery shaping sunken groove, sunken groove with gu fixed ring outer peripheral edges suit.

5. The process for forming a structure of a conductive electrode post without falling off as claimed in claim 3, wherein the fixing ring is encapsulated, an encapsulated inner ring is obtained by encapsulating and forming on the fixing ring, and the step of forming the encapsulated fixing ring comprises the steps of:

welding a rupture disk on the top cover plate of the reserved pole mounting hole and the rupture hole and detecting the air tightness to obtain a semi-finished top cover;

and a sinking groove is formed on the periphery of the pole mounting hole and is matched with the positioning ring body on the outer periphery of the fixing ring.

6. A pole structure is arranged on a pole arrangement hole of a battery cover plate and is characterized by comprising a pole, a rubber-coated fixing ring and a sealing ring fixedly arranged on the pole;

the supporting disc body is arranged on the periphery of the pole, and an annular notch is formed in the outer edge angle of the upper surface of the supporting disc body;

the sealing ring is formed by encapsulation along the annular gap on the supporting disk body, the outer periphery of the supporting disk body and the lower surface of the supporting disk body;

the lower surface of the sealing ring is provided with a sealing part.

7. The pole structure of claim 6, wherein the encapsulated retaining ring comprises: the wrapping is arranged on the wrapping inner ring at the periphery of the pole, and the wrapping is arranged on the wrapping inner ring and the fixing ring at the periphery of the sealing ring.

8. The pole structure of claim 7, wherein the encapsulated inner ring and the fixing ring are integrally formed, an annular groove is formed on the outer periphery of the encapsulated inner ring, and a plurality of positioning posts are arranged in the annular groove;

an annular inner bulge is arranged at the upper part of the fixing ring, and a plurality of positioning holes corresponding to the positioning columns are formed in the annular inner bulge.

9. A battery cover plate is characterized in that a pole mounting hole is formed in the battery cover plate, a pole structure is arranged on the pole mounting hole, and the pole structure comprises a pole, a rubber-coated fixing ring and a sealing ring fixedly arranged on the pole;

the supporting disc body is arranged on the periphery of the pole, and an annular notch is formed in the outer edge angle of the upper surface of the supporting disc body;

the sealing ring is formed by encapsulation along the annular gap on the supporting disk body, the outer periphery of the supporting disk body and the lower surface of the supporting disk body;

the lower surface of the sealing ring is provided with a sealing part;

the encapsulated retaining ring comprises: the rubber coating inner ring is wrapped on the periphery of the pole, and the fixing ring is wrapped on the peripheries of the rubber coating inner ring and the sealing ring;

the rubber coating inner ring and the fixing ring are of an integrally formed structure, an annular groove is formed in the outer periphery of the rubber coating inner ring, and a plurality of positioning columns are arranged in the annular groove;

the upper part of the fixing ring is provided with an annular inner bulge, and the annular inner bulge is provided with a plurality of positioning holes corresponding to the positioning columns;

the lower part of the outer periphery of the fixing ring is formed into a positioning ring body, a sunken groove is formed in the periphery of the pole mounting hole, and the sunken groove is matched with the positioning ring body.

10. The battery cover plate of claim 9, wherein the lower surface of the post is disposed on the open upper end surface of the post mounting hole.

Technical Field

The invention belongs to the field of battery processing, and particularly relates to a forming process of a non-falling structure of a conductive pole column, a pole column structure and a battery cover plate.

Background

With the development of electronic products, batteries are widely used, and a stable and convenient power source is required due to the miniaturization and portability of electronic products. The battery is convenient to carry due to simple structure, simple and convenient to charge and discharge, free of influence of external weather and temperature, stable and reliable in performance, and plays a great role in various aspects of modern social life. The battery top cap includes cover plate and utmost point post, and the quality of top cap directly influences the performance of battery. In the prior art, the battery cover is usually manufactured and molded one part by one part in the molding process, and then all parts are assembled, so that the production mode is complicated, and the problems of difficult assembly of the sealing ring and difficult assembly of the pole fixing ring are often caused in the assembling process.

Disclosure of Invention

The invention aims to provide a forming process of a non-falling structure of a conductive pole column, a pole column structure and a battery cover plate aiming at the defects in the prior art.

The purpose of the invention is realized by the following technical scheme:

in a first aspect, a process for forming a non-shedding structure of a conductive electrode column is provided, the process comprising the steps of:

s1, forming the pole to obtain the pole with a supporting disc body;

s2, encapsulating the pole, and encapsulating and forming the periphery of the support disc body of the pole to obtain a sealing ring to form an encapsulated pole;

s3, forming a fixing ring to obtain a fixing ring for fixing the pole;

s4, encapsulating the fixing ring, and encapsulating the fixing ring to obtain an encapsulated inner ring to form an encapsulated fixing ring;

s5, assembling and welding, namely assembling the encapsulated pole and the encapsulated fixing ring, and mounting the encapsulated pole and the encapsulated fixing ring to a top cover plate;

and S6, finishing.

Preferably, the outer edge angle shaping of support disk body upper surface has an annular breach, utmost point post rubber coating the support disk body periphery rubber coating shaping sealing washer of utmost point post includes the step:

the sealing ring is obtained by encapsulating and forming along the annular notch on the supporting disk body, the outer periphery of the supporting disk body and the lower surface of the supporting disk body;

and a sealing part is formed on the lower surface of the sealing ring.

The sealing ring is formed along the upper surface, the outer periphery and the lower surface of the supporting disc body, namely the supporting disc body is wrapped for forming, and the sealing ring and the pole are integrated in a forming mode, so that the sealing ring is not easy to fall off, meanwhile, the sealing surface of the sealing ring can be increased, and the sealing effect is further increased.

Preferably, the fixing ring is molded, and the encapsulated inner ring is obtained by injection molding according to the outer peripheral shape of the pole and the inner peripheral shape of the fixing ring, and the encapsulated fixing ring is obtained by the steps of:

an annular inner bulge is formed on the fixing ring, and a plurality of positioning holes are formed on the annular inner bulge;

the outer periphery of the rubber-coated inner ring is internally and convexly formed into an annular groove corresponding to the annular part, and a plurality of positioning columns corresponding to the positioning holes are formed in the annular groove;

the lower part of the outer periphery of the fixing ring is formed into a positioning ring body.

The annular groove is matched with the annular inner protrusion, so that the fixing ring can fix the rubber coating inner ring, the fixing effect of the fixing ring and the rubber coating inner ring is better due to the positioning column and the positioning hole, and the pole is fixed on the pole mounting hole by matching the fixing ring and the rubber coating inner ring.

Preferably, the fixing ring is encapsulated, and the encapsulating inner ring is encapsulated and formed on the fixing ring, so that the encapsulating fixing ring is formed by the steps of:

welding a rupture disk on the top cover plate of the reserved pole mounting hole and the rupture hole and detecting the air tightness to obtain a semi-finished top cover;

utmost point post mounting hole periphery shaping sunken groove, sunken groove with gu fixed ring outer peripheral edges suit.

The sinking groove is used for limiting the position of the fixing ring on the top cover, so that the fixing ring cannot move on the top cover and further influences the fixation of the pole.

Preferably, the fixing ring is encapsulated, and the encapsulating inner ring is encapsulated and formed on the fixing ring, so that the encapsulating fixing ring is formed by the steps of:

welding a rupture disk on the top cover plate of the reserved pole mounting hole and the rupture hole and detecting the air tightness to obtain a semi-finished top cover;

and a sinking groove is formed on the periphery of the pole mounting hole and is matched with the positioning ring body on the outer periphery of the fixing ring. The sunken groove is used for limiting the position of the fixing ring on the top cover, the fixing ring is limited on the top cover through the matching of the positioning ring body and the sunken groove, and the fixing ring cannot move on the top cover to further influence the fixing of the pole.

In a second aspect, a pole structure is provided, and is arranged on a pole arrangement hole of a battery cover plate, and the pole structure comprises a pole, a rubber-coated fixing ring and a sealing ring fixedly arranged on the pole;

the supporting disc body is arranged on the periphery of the pole, and an annular notch is formed in the outer edge angle of the upper surface of the supporting disc body;

the sealing ring is formed by encapsulation along the annular gap on the supporting disk body, the outer periphery of the supporting disk body and the lower surface of the supporting disk body;

the lower surface of the sealing ring is provided with a sealing part.

Preferably, the encapsulated retaining ring comprises: the wrapping is arranged on the wrapping inner ring at the periphery of the pole, and the wrapping is arranged on the wrapping inner ring and the fixing ring at the periphery of the sealing ring.

The fixing ring is matched with the rubber-coated inner ring and used for fixing the pole, so that the pole is limited on the pole mounting hole.

Preferably, the rubber coating inner ring and the fixing ring are of an integrally formed structure, an annular groove is formed in the outer periphery of the rubber coating inner ring, and a plurality of positioning columns are arranged in the annular groove;

an annular inner bulge is arranged at the upper part of the fixing ring, and a plurality of positioning holes corresponding to the positioning columns are formed in the annular inner bulge.

The annular groove is matched with the annular inner protrusion, so that the fixing ring can fix the rubber coating inner ring, the fixing effect of the fixing ring and the rubber coating inner ring is better due to the positioning column and the positioning hole, and the pole is fixed on the pole mounting hole by matching the fixing ring and the rubber coating inner ring.

In a third aspect, a battery cover plate is provided, wherein a pole mounting hole is formed in the battery cover plate, a pole structure is arranged on the pole mounting hole, and the pole structure comprises a pole, a rubber-coated fixing ring and a sealing ring fixedly arranged on the pole;

the supporting disc body is arranged on the periphery of the pole, and an annular notch is formed in the outer edge angle of the upper surface of the supporting disc body;

the sealing ring is formed by encapsulation along the annular gap on the supporting disk body, the outer periphery of the supporting disk body and the lower surface of the supporting disk body;

the lower surface of the sealing ring is provided with a sealing part;

the encapsulated retaining ring comprises: the rubber coating inner ring is wrapped on the periphery of the pole, and the fixing ring is wrapped on the peripheries of the rubber coating inner ring and the sealing ring;

the rubber coating inner ring and the fixing ring are of an integrally formed structure, an annular groove is formed in the outer periphery of the rubber coating inner ring, and a plurality of positioning columns are arranged in the annular groove;

the upper part of the fixing ring is provided with an annular inner bulge, and the annular inner bulge is provided with a plurality of positioning holes corresponding to the positioning columns;

the lower part of the outer periphery of the fixing ring is formed into a positioning ring body, a sunken groove is formed in the periphery of the pole mounting hole, and the sunken groove is matched with the positioning ring body.

Preferably, the lower surface of the pole is arranged on the upper end face of the opening of the pole mounting hole. The utmost point post does not pass utmost point post mounting hole sets up, so the battery is inside not by utmost point post occupation space, has obviously promoted the battery inner space.

The fourth aspect still provides a sealing washer structure, the sealing washer structure sets up on utmost point post, be provided with the support disk body on the utmost point post, the sealing washer parcel support the disk body setting, the sealing washer includes, wraps up support disk body injection moulding's the basement of moulding plastics, and the parcel the basement rubber coating layer of moulding plastics, the sealing washer bottom is provided with a sealing.

The invention has the following beneficial effects: on the first hand, the production speed of the battery cover plate is increased by simultaneously prefabricating and then assembling the encapsulated pole, the encapsulated fixing ring and the semi-finished product of the top cover; in the second aspect, the sealing ring is formed by injection molding and encapsulation at the periphery of the supporting disc body of the pole, so that the sealing ring is not required to be assembled, and the steps of assembling the sealing ring are reduced; in the third aspect, the pole is arranged on the pole mounting hole and supported by the supporting disc body, so that the pole does not penetrate through the battery cover plate to enter the battery, the space is increased for the inside of the battery, and the capacity of the battery is favorably increased.

Drawings

FIG. 1 is a process flow diagram of an embodiment of the invention;

FIG. 2 is a schematic view of a battery cover according to an embodiment of the present invention;

FIG. 3 is a schematic view of an assembly of a encapsulated pole and an encapsulated fixing ring according to an embodiment of the present invention;

FIG. 4 is a schematic view of a weld post according to an embodiment of the present invention;

FIG. 5 is a partial cross-sectional view of a battery cover according to an embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view of a pole structure according to an embodiment of the present invention;

FIG. 7 is an enlarged view of a portion of the embodiment of the present invention at A of FIG. 7;

FIG. 8 is a schematic cross-sectional view of a pole of an embodiment of the present invention;

FIG. 9 is a cross-sectional view of a seal ring according to an embodiment of the present invention;

FIG. 10 is a schematic cross-sectional view of an encapsulated inner ring of an embodiment of the present invention;

FIG. 11 is a cross-sectional view of a retaining ring according to an embodiment of the present invention;

fig. 12 is a schematic cross-sectional view of another post structure according to an embodiment of the invention.

Wherein: 1. a top cover plate; 11. sinking the tank; 12. pole mounting holes; 2. semi-finished pole; 21. a pole column; 211. supporting the tray body; 2111. an annular gap; 212. a positioning table; 22. a seal ring; 221. an upper surface of the seal ring; 222. the peripheral surface of the sealing ring; 2231. flat surface; 2232. encapsulating the bumps; 23. encapsulating an inner ring; 231. a positioning column; 232. an annular groove; 24. a fixing ring; 241. a positioning ring body; 2411. a chamfering structure; 242. the ring is internally convex; 2421. positioning holes; 3. plastic is discharged; 31. an annular support table; 4. a blast hole; 5. a rupture disk; 6. encapsulating the pole; 7. and (4) encapsulating and fixing the ring.

Detailed Description

The following describes preferred embodiments of the present invention and those skilled in the art will be able to realize the invention by using the related art in the following and will more clearly understand the innovative features and the advantages brought by the present invention.

The invention provides a forming process of a non-falling structure of a conductive pole column, a pole column structure and a battery cover.

The purpose of the invention is realized by the following technical scheme:

in a first aspect, as shown in fig. 1 and also referring to fig. 2 to 11, a process for forming a non-peeling structure of a conductive electrode pillar includes the steps of:

s1, forming the pole to obtain the pole 21 with the support disc body 211;

further, the molding of the pole 21 can be performed by a heading pressing method, and the material of the pole 21 is placed into a heading pressing mold for heading pressing, so as to obtain a molded pole 21 workpiece. In some possible embodiments of the post 21, the post 21 may be formed by injection molding, or other methods such as cutting, casting, etc. And are not limited herein.

S2, encapsulating the pole, encapsulating and molding the periphery of the supporting disc body 211 of the pole 21 to obtain a sealing ring 22, and forming an encapsulated pole 6;

after the pole 21 is obtained, the sealing ring 22 is formed on the periphery of the supporting disc body 211 in an encapsulation manner by an injection molding machine, and the sealing ring 22 is formed on the pole 21 and forms the encapsulated pole 6 with the pole 21 into an integral structure.

As a possible embodiment, after obtaining the terminal post 21, an injection molding substrate may be injection molded on the periphery of the supporting disc body 211 by an injection molding machine, the injection molding substrate wraps the supporting disc body 211 for molding, an encapsulating layer is formed on the periphery of the injection molding substrate by using an encapsulating machine for encapsulating, the injection molding substrate and the encapsulating layer form the sealing ring 22, and the sealing ring 22 is formed on the terminal post 21 and forms an encapsulated terminal post 6 with the terminal post 21 into an integrated structure.

S3, forming a fixing ring to obtain the fixing ring 24 for fixing the pole 21;

further, the fixing ring 24 can be formed by injection molding, and a workpiece of the fixing ring 24 is injection molded by an injection molding machine; of course, the fixing ring 24 may be formed by other methods such as pressing or thermoforming, and is not limited in this respect.

S4, encapsulating the fixing ring, and encapsulating the fixing ring to obtain an encapsulated inner ring to form an encapsulated fixing ring;

and encapsulating the encapsulated inner ring 23 workpiece in the fixing ring 24 by an encapsulating machine to form the encapsulated fixing ring 7. The inner peripheral shape of the encapsulating inner ring 23 can be encapsulated according to the outer peripheral shape of the pole 21, and the outer peripheral shape of the encapsulating inner ring 23 can be encapsulated according to the inner peripheral shape of the fixing ring 24.

As a possible embodiment, the encapsulated fixing ring 7 can be formed by injection-moulding an encapsulated inner ring 23 piece inside said fixing ring 24 by means of an injection-moulding machine. The inner peripheral shape of the encapsulating inner ring 23 can be injection molded according to the outer peripheral shape of the pole 21, and the outer peripheral shape of the encapsulating inner ring 23 can be injection molded according to the inner peripheral shape of the fixing ring 24.

As another possible embodiment, the encapsulated inner ring 23 can be directly injection-molded on the periphery of the encapsulated pole 6 by an injection molding machine, and the fixing ring 24 is injection-molded on the periphery of the encapsulated inner ring 23, so that the encapsulated pole 6, the encapsulated inner ring 23 and the fixing ring 24 are integrated into a whole.

S5, assembling and welding, namely assembling the encapsulated pole and the encapsulated fixing ring, and mounting the encapsulated pole and the encapsulated fixing ring to a top cover plate;

further, the top cover plate 1 is obtained through injection molding by an injection molding machine, two pole mounting holes 12 are reserved in the top cover plate 1 in the injection molding process and used for mounting the poles 21, each pole 21 comprises a positive pole 21 and a negative pole 21, and the positive pole 21 and the negative pole 21 are respectively arranged on the two pole mounting holes 12; the blast hole 4 that the in-process of lamina tecti 1 was being moulded plastics was reserved is used for setting up rupture disk 5, rupture disk 5 passes through laser welding on blast hole 4, rupture disk 5 is when battery internal pressure is too big, and the timely blasting is opened and is carried out the pressure release. And detecting the welding airtightness of the rupture disk and the top cover plate through helium detection to obtain a semi-finished top cover plate.

It should be noted that the semi-finished top cover includes: the top cover plate 1 is formed by injection molding, and the rupture disk 5 is welded on the rupture hole 4.

Further, assembling the encapsulated pole 6 and an encapsulated fixing ring 7, and installing the encapsulated pole 6 into the encapsulated fixing ring 7 to obtain a pole semi-finished product 2;

furthermore, the encapsulated pole 6 is placed inside the encapsulated fixing ring 7 for installation, the encapsulated inner ring 23 is connected with the supporting disc body 211, the supporting disc body 211 is limited, the encapsulated inner ring 23 is of an annular structure, the pole 21 penetrates through a through hole in the middle of the encapsulated inner ring 23, and the encapsulated inner ring 23 wraps the periphery of the pole 21.

Welding a pole 21, and welding the pole semi-finished product 2 to the top cover semi-finished product to obtain a battery top cover;

further, the semi-finished pole 2 is welded to the semi-finished top cover by laser welding. Specifically, the lower surface of the fixing ring 24 is welded to the upper surface of the top cover plate 1 by laser welding. Because the semi-finished pole 2 consists of the encapsulated pole 6 and the encapsulated fixing ring 7, the encapsulated fixing ring 7 is an integral structure of the encapsulated inner ring 23 and the encapsulated fixing ring 24, and when the fixing ring 24 is welded on the top cover plate 1, the encapsulated inner ring 23 rivets the support disc body 211, so that the pole 21 is limited.

And S6, finishing. And assembling the lower plastic to obtain the battery cover.

Further, obtain through injection molding machine injection moulding 3 down plastic, plastic 3 is at the in-process of moulding plastics down, and it has two utmost point post mounting holes 12 and a blast hole 4 to reserve, two utmost point post mounting holes 12 on the plastic 3 are used for the installation down utmost point post 21, utmost point post 21 includes anodal post 21 and negative pole post 21, anodal post 21 with negative pole post 21 sets up two respectively on the utmost point post mounting hole 12. Utmost point post 21 on the plastic 3 sets up the annular brace table 31 that the periphery set up down, annular brace table 31 is used for supporting disk body 211, and then supports utmost point post 21 prevents that utmost point post 21 from dropping inside getting into the battery.

Furthermore, the air tightness detection is helium detection, helium gas with certain pressure is filled into the workpiece to be detected after the workpiece to be detected is evacuated, a vacuum box with certain vacuum degree requirement is arranged outside the workpiece to be detected, the specific pressure and vacuum degree are related to the type and tightness requirements of the workpiece to be detected, and the vacuum box is connected with a leak detection port of the helium mass spectrometer leak detector. If the detected workpiece has leakage, the helium gas leaking into the vacuum box can be detected by a helium mass spectrometer leak detector.

In an embodiment of the present invention, referring to fig. 2 to 11, an annular notch 2111 is formed at an outer edge angle of the upper surface of the supporting disk 211, the pole is encapsulated, and a sealing ring 22 is encapsulated and formed on the outer periphery of the supporting disk 211 of the pole 21, including the steps of:

after the pole 21 is obtained, the sealing ring 22 is formed on the periphery of the supporting disc body 211 in an encapsulation manner by using an encapsulation machine, and the sealing ring 22 is formed on the pole 21 and forms an encapsulated pole 6 with the pole 21 in an integrated structure.

The annular notch 2111 of the sealing ring 22 on the supporting disk body 211, the outer periphery of the supporting disk body 211 and the lower surface of the supporting disk body 211 are encapsulated by the sealing ring 22, so that the sealing surface of the sealing ring 22 is increased, and the sealing surface comprises: a first sealing surface formed by the lower surface of the sealing ring 22 and the surface of the top cover plate 1, a second sealing surface formed by the outer peripheral surface 222 of the sealing ring 22 and the inner peripheral surface of the fixing ring 24, and a third sealing surface formed by the upper surface 221 of the sealing ring and the lower surface of the encapsulation inner ring 23.

As a possible embodiment, an injection molded base (not shown) may be injection molded along the annular notch 2111 of the supporting tray 211, the outer periphery of the supporting tray 211 and the lower surface of the supporting tray 211. The injection molding substrate is formed by injection molding on the supporting disc body 211 through an injection molding machine, so that the injection molding substrate wraps up the supporting disc body 211, the injection molding substrate is supported by the supporting disc body 211, meanwhile, the contact area between the injection molding substrate and the supporting disc body 211 is increased, the injection molding substrate is not easy to fall off, and the integrated structure of the encapsulated pole 6 is more stable. An encapsulating layer (not shown) is over-molded on the injection molded base to form the seal ring 22. The rubber coating layer is formed by rubber coating machine through rubber coating molding on the injection molding base, the rubber coating layer is an important structure of a sealing surface formed by the contact of the sealing ring 22 and the top cover plate 1, the rubber coating layer wraps the injection molding base, the injection molding base and the pole 21 form an integrated structure, and meanwhile, the injection molding base wraps the supporting disc body 211, so that the rubber coating layer is also arranged on an annular notch 2111 on the supporting disc body 211, the outer periphery of the supporting disc body 211 and the lower surface of the supporting disc body 211 are coated with rubber to form a wrapping on the supporting disc body 211, and the sealing surface of the sealing ring 22 is increased, and comprises the following steps: a first sealing surface formed by the lower surface of the sealing ring 22 and the surface of the top cover plate 1, a second sealing surface formed by the outer peripheral surface 222 of the sealing ring 22 and the inner peripheral surface of the fixing ring 24, and a third sealing surface formed by the upper surface 221 of the sealing ring and the lower surface of the encapsulation inner ring 23.

A sealing portion is formed on the lower surface of the sealing ring 22.

Further, the sealing portion is provided at an end portion of the lower surface of the sealing ring 22, the sealing portion is a semicircular encapsulation protrusion 2232, and a groove is formed adjacent to the encapsulation protrusion 2232. The first sealing surface includes: the encapsulation protrusion 2232 is pressed and deformed by the pressure to form an end sealing surface with the upper surface of the top cover plate 1, and a flat surface 2231 in the lower surface is in contact with the top cover plate 1 to form a flat sealing surface.

It should be noted that the encapsulating protrusion 2232 and the groove are reserved when the sealing ring 22 is encapsulated.

The sealing ring 22 is formed along the upper surface, the outer periphery and the lower surface of the supporting disc body 211, which is equivalent to wrapping the supporting disc body 211 for forming, and in such a forming mode, the sealing ring 22 and the pole 21 are integrated, so that the sealing ring is not easy to fall off, and meanwhile, the sealing surface of the sealing ring 22 can be increased, and further, the sealing effect is increased.

In an embodiment of the present invention, the step of encapsulating the fixing ring and the step of encapsulating the fixing ring 24 comprises:

an annular inner protrusion 242 is formed on the fixing ring 24, and a plurality of positioning holes 2421 are formed on the annular inner protrusion 242; when the fixing ring 24 is injection molded by an injection molding machine, the annular inner protrusion 242 is integrally injection molded, and the annular inner protrusion 242 is used for limiting the rubber-coated inner ring 23, so that the rubber-coated inner ring 23 is stable and does not fall off.

An annular groove 232 is formed on the outer periphery of the rubber coating inner ring 23 corresponding to the annular inner protrusion 242, and a plurality of positioning columns 231 corresponding to the positioning holes 2421 are formed in the annular groove 232; when the rubber coating inner ring 23 is rubber coated and formed by a rubber coating machine, due to the existence of the annular inner protrusion 242, an annular groove 232 is formed on the outer periphery of the rubber coating inner ring 23, and meanwhile, because the annular inner protrusion 242 is formed with a plurality of positioning holes 2421, when the rubber coating inner ring 23 is rubber coated and formed by the rubber coating machine, a plurality of positioning columns 231 corresponding to the positioning holes 2421 are rubber coated and formed, and the positioning columns 231 are correspondingly matched with the positioning holes 2421, so that the rubber coating fixing ring 7 is formed into an integrated structure, and the stability and the strength of the fixing ring 24 are increased.

The fixing ring 24 is formed with a positioning ring 241 at its lower portion. When the fixing ring 24 is injection-molded by an injection molding machine, the positioning ring body 241 is integrally injection-molded, the positioning ring body 241 is used for limiting the position of the encapsulated fixing ring 7 on the top cover plate 1, and the positioning ring body 241 and the top cover plate 1 are welded by laser, so that the fixing ring 24 is welded on the top cover plate 1.

The annular groove 232 is matched with the annular inner protrusion 242, so that the fixing ring 24 can fix the rubber-coated inner ring 23, the positioning column 231 and the positioning hole 2421 enable the fixing ring 24 and the rubber-coated inner ring 23 to be better fixed, and the fixing ring 24 is matched with the rubber-coated inner ring 23 to fix the pole 21 on the pole mounting hole 12.

In the embodiment of the invention, welding the rupture disk 5 on the top cover plate 1 of the reserved pole mounting hole 12 and the rupture hole 4 and detecting the air tightness to obtain a semi-finished top cover product comprises the following steps:

utmost point post mounting hole 12 periphery shaping sunken groove 11, sunken groove 11 with gu 24 outer peripheral edges of fixed ring suit. The sink groove 11 is used to limit the position of the fixing ring 24 on the top cover, so that the fixing ring 24 does not move on the top cover and further affects the fixation of the pole 21.

Further, the internal periphery of sunken groove 11 forms spacing face, gu fixed ring 24 quilt the internal periphery limit position of sunken groove 11 makes solid fixed ring 24 more firm when making things convenient for the welding, and then makes utmost point post 21 more firm fixed. The fixing ring 24 is welded in the sink tank 11 by laser welding.

In the embodiment of the present invention, the injection molding of the top cover of the reserved post mounting hole 12 and the blast hole 4 includes the steps of:

the periphery of the pole mounting hole 12 is formed with a sinking groove 11, and the sinking groove 11 is adapted to the positioning ring body 241 on the outer periphery of the fixing ring 24. The sunken groove 11 is used for limiting the position of the fixing ring 24 on the top cover, the fixing ring 24 is limited on the top cover through the matching of the positioning ring body 241 and the sunken groove 11, and the fixing ring 24 cannot move on the top cover to further influence the fixing of the pole 21.

Further, the positioning ring body 241 is welded in the sinking groove 11 through laser welding, a chamfer structure 2411 is formed between the upper surface and the peripheral surface of the positioning ring body 241, the chamfer structure 2411 is an avoiding structure, so that the fixing ring 24 is conveniently installed on the sinking groove 11 and is also conveniently welded.

Overall, the forming process of the non-falling structure of the conductive electrode post can respectively carry out injection molding on the encapsulated electrode post 6, the encapsulated fixing ring 7, the top cover plate 1 and the lower plastic 3 through a plurality of injection molding machines to obtain four modularized components, and the four modularized components are assembled and welded to obtain the finished product anti-falling battery cover.

In a second aspect, as shown in fig. 2 to 11, a pole structure is provided, where the pole structure is disposed on a pole 21 disposing hole of a battery cover plate, and the pole 21 structure includes a pole 21, a rubber-coated fixing ring 7, and a sealing ring 22 fixedly disposed on the pole 21;

the periphery of the pole 21 is provided with a supporting disc body 211, and an annular notch 2111 is arranged at the outer edge angle of the upper surface of the supporting disc body;

further, the sealing ring 22 is formed by encapsulating along the annular notch 2111 on the supporting disk 211, the outer periphery of the supporting disk 211 and the lower surface of the supporting disk 211 by an encapsulating machine.

After the pole 21 is obtained, the sealing ring 22 is formed on the periphery of the supporting disc body 211 in an encapsulation manner by using an encapsulation machine, and the sealing ring 22 is formed on the pole 21 and forms an encapsulated pole 6 with the pole 21 in an integrated structure.

The annular notch 2111 of the sealing ring 22 on the supporting disk body 211, the outer periphery of the supporting disk body 211 and the lower surface of the supporting disk body 211 are encapsulated by the sealing ring 22, so that the sealing surface of the sealing ring 22 is increased, and the sealing surface comprises: a first sealing surface formed by the lower surface of the sealing ring 22 and the surface of the top cover plate 1, a second sealing surface formed by the outer peripheral surface 222 of the sealing ring 22 and the inner peripheral surface of the fixing ring 24, and a third sealing surface formed by the upper surface 221 of the sealing ring and the lower surface of the encapsulation inner ring 23.

As a possible embodiment, the sealing ring 22 includes an injection molded base (not shown) injection molded along the annular notch 2111 on the supporting disk 211, the outer periphery of the supporting disk 211 and the lower surface of the supporting disk 211, and an encapsulating layer (not shown) encapsulated outside the injection molded base; further, the injection molding substrate is obtained by injection molding on the support disc body 211 through an injection molding machine, so that the injection molding substrate wraps up the support disc body 211, the injection molding substrate is supported by the support disc body 211, meanwhile, the contact area between the injection molding substrate and the support disc body 211 is increased, the injection molding substrate is not prone to falling off, and the integrated structure of the encapsulated pole 6 is more stable. The rubber coating layer is formed by rubber coating machine through rubber coating molding on the injection molding base, the rubber coating layer is an important structure of a sealing surface formed by the contact of the sealing ring 22 and the top cover plate 1, the rubber coating layer wraps the injection molding base, the injection molding base and the pole 21 form an integrated structure, and meanwhile, the injection molding base wraps the supporting disc body 211, so that the rubber coating layer is also arranged on an annular notch 2111 on the supporting disc body 211, the outer periphery of the supporting disc body 211 and the lower surface of the supporting disc body 211 are coated with rubber to form a wrapping on the supporting disc body 211, and the sealing surface of the sealing ring 22 is increased, and comprises the following steps: a first sealing surface formed by the lower surface of the sealing ring 22 and the surface of the top cover plate 1, a second sealing surface formed by the outer peripheral surface 222 of the sealing ring and the inner peripheral surface of the fixing ring 24, and a third sealing surface formed by the upper surface 221 of the sealing ring and the lower surface of the encapsulation inner ring 23.

The lower surface of the sealing ring 22 is provided with a sealing part.

Further, the sealing portion is disposed at an end portion of the lower surface of the sealing ring 22, the sealing portion is an encapsulation protrusion 2232, and a groove is formed adjacent to the encapsulation protrusion 2232. The first sealing surface includes a flat sealing surface formed by pressing the encapsulation protrusion 2232 against the upper surface of the top cover plate 1 under pressure to form an end sealing surface, and a flat surface 2231 on the lower surface contacting the top cover plate 1. The sealing ring 22 provides a sealing effect, and at the same time, supports the supporting disc 211, and thus the pole 21.

In the structural embodiment of the pole 21 of the present invention, the encapsulated fixing ring 7 includes: the pole comprises an encapsulated inner ring 23 wrapping the periphery of the pole 21 and a fixing ring 24 wrapping the peripheries of the encapsulated inner ring 23 and the sealing ring 22.

Specifically, when the fixing ring 24 is injection molded by an injection molding machine, the annular inner protrusion 242 is integrally injection molded, and the annular inner protrusion 242 is used for limiting the rubber-coated inner ring 23, so that the rubber-coated inner ring 23 is stable and does not fall off. When the encapsulating inner ring 23 is encapsulated and formed by an encapsulating machine, an annular groove 232 is formed on the outer periphery of the encapsulating inner ring 23 due to the existence of the annular inner protrusion 242.

The fixing ring 24 is fitted with the encapsulating inner ring 23 for fixing the pole 21 such that the pole 21 is defined on the pole mounting hole 12.

In the pole structural embodiment of the present invention, the rubber-coated inner ring 23 and the fixing ring 24 are an integral structure, an annular groove 232 is formed on the outer periphery of the rubber-coated inner ring 23, and a plurality of positioning posts 231 are arranged in the annular groove 232;

an annular inner protrusion 242 is disposed on the upper portion of the fixing ring 24, and a plurality of positioning holes 2421 corresponding to the positioning posts 231 are disposed on the annular inner protrusion 242.

Further, since the plurality of positioning holes 2421 are formed in the annular inner protrusion 242, when the encapsulating inner ring 23 is encapsulated by an encapsulating machine, a plurality of positioning posts 231 corresponding to the positioning holes 2421 are encapsulated, and the positioning posts 231 are correspondingly matched with the positioning holes 2421, so that the encapsulating fixing ring 7 is formed into an integrated structure, and the stability and the strength of the fixing ring 24 are improved.

Further, the fixing ring 24 is an annular fixing ring, the annular inner protrusion 242 is adapted to the annular fixing ring, the annular fixing ring includes two arc surface sections and two straight surface sections connecting the two arc surface sections, two positioning holes 2421 are disposed on the upper surface of each straight surface section of the annular inner protrusion 242 corresponding to the annular fixing ring, and only one positioning hole 2421 is disposed in the middle of each arc surface section of the annular inner protrusion 242 corresponding to the annular fixing ring. Accordingly, the positioning posts 231 are disposed corresponding to the positioning holes 2421.

In some possible embodiments, the number of the positioning holes 2421 and the positioning posts 231 may be smaller or larger, and is not limited in detail.

The annular groove 232 is matched with the annular inner protrusion 242, so that the fixing ring 24 can fix the rubber-coated inner ring 23, the positioning column 231 and the positioning hole 2421 enable the fixing ring 24 and the rubber-coated inner ring 23 to be better fixed, and the fixing ring 24 is matched with the rubber-coated inner ring 23 to fix the pole 21 on the pole mounting hole 12.

In an embodiment of the post structure of the present invention, the battery cover plate includes: be provided with the lamina tecti 1 of utmost point post mounting hole 12 to and the corresponding lower plastic 3 that is provided with utmost point post 21 and sets up the hole, plastic 3 sets up down the below of lamina tecti 1. The lower plastic 3 is used for supporting the top cover plate 1 and can also support the pole 21.

Further, the top cover plate 1 is obtained through injection molding by an injection molding machine, two pole mounting holes 12 are reserved in the top cover plate 1 in the injection molding process and used for mounting the poles 21, each pole 21 comprises a positive pole 21 and a negative pole 21, and the positive pole 21 and the negative pole 21 are respectively arranged on the two pole mounting holes 12; the blast hole 4 that the in-process of lamina tecti 1 was being moulded plastics was reserved is used for setting up rupture disk 5, rupture disk 5 passes through laser welding on blast hole 4, rupture disk 5 is when battery internal pressure is too big, and the timely blasting is opened and is carried out the pressure release. The periphery of the pole mounting hole 12 of the top cover plate 1 is provided with a sunken groove 11, and the sealing ring 22 and the fixing ring 24 are installed in the sunken groove 11.

Further, obtain through injection molding machine injection moulding 3 down plastic, plastic 3 is at the in-process of moulding plastics down, and it has two utmost point post mounting holes 12 and a blast hole 4 to reserve, two utmost point post mounting holes 12 on the plastic 3 are used for the installation down utmost point post 21, utmost point post 21 includes anodal post 21 and negative pole post 21, anodal post 21 with negative pole post 21 sets up two respectively on the utmost point post mounting hole 12. Utmost point post 21 on the plastic 3 sets up the annular brace table 31 that the periphery set up down, annular brace table 31 is used for supporting disk body 211, and then supports utmost point post 21 prevents that utmost point post 21 from dropping inside getting into the battery.

In a third aspect, as shown in fig. 2 to 12, a battery cover plate is provided, where the battery cover plate is provided with a post mounting hole 12, the post mounting hole 12 is provided with a post 21 structure, and the post 21 structure includes a post 21, a rubber-coated fixing ring 7, and a sealing ring 22 fixedly disposed on the post 21;

the periphery of the pole 21 is provided with a supporting disc body 211, and an annular notch 2111 is arranged at the outer edge angle of the upper surface of the supporting disc body;

the sealing ring 22 is formed by encapsulation molding through an encapsulation machine along the annular notch 2111 on the supporting disk body 211, the outer periphery of the supporting disk body 211 and the lower surface of the supporting disk body 211.

After the pole 21 is obtained, the sealing ring 22 is formed on the periphery of the supporting disc body 211 in an encapsulation manner by using an encapsulation machine, and the sealing ring 22 is formed on the pole 21 and forms an encapsulated pole 6 with the pole 21 in an integrated structure.

The annular notch 2111 of the sealing ring 22 on the supporting disk body 211, the outer periphery of the supporting disk body 211 and the lower surface of the supporting disk body 211 are encapsulated by the sealing ring 22, so that the sealing surface of the sealing ring 22 is increased, and the sealing surface comprises: a first sealing surface formed by the lower surface of the sealing ring 22 and the surface of the top cover plate 1, a second sealing surface formed by the outer peripheral surface 222 of the sealing ring 22 and the inner peripheral surface of the fixing ring 24, and a third sealing surface formed by the upper surface 221 of the sealing ring and the lower surface of the encapsulation inner ring 23.

As a possible embodiment, the sealing ring 22 includes an injection molded base (not shown) injection molded along the annular notch 2111 on the supporting disk 211, the outer periphery of the supporting disk 211 and the lower surface of the supporting disk 211, and an encapsulating layer (not shown) encapsulated outside the injection molded base; further, the injection molding substrate is obtained by injection molding on the support disc body 211 through an injection molding machine, so that the injection molding substrate wraps up the support disc body 211, the injection molding substrate is supported by the support disc body 211, meanwhile, the contact area between the injection molding substrate and the support disc body 211 is increased, the injection molding substrate is not prone to falling off, and the integrated structure of the encapsulated pole 6 is more stable. The rubber coating layer is formed by rubber coating machine through rubber coating molding on the injection molding base, the rubber coating layer is an important structure of a sealing surface formed by the contact of the sealing ring 22 and the top cover plate 1, the rubber coating layer wraps the injection molding base, the injection molding base and the pole 21 form an integrated structure, and meanwhile, the injection molding base wraps the supporting disc body 211, so that the rubber coating layer is also arranged on an annular notch 2111 on the supporting disc body 211, the outer periphery of the supporting disc body 211 and the lower surface of the supporting disc body 211 are coated with rubber to form a wrapping on the supporting disc body 211, and the sealing surface of the sealing ring 22 is increased, and comprises the following steps: a first sealing surface formed by the lower surface of the sealing ring 22 and the surface of the top cover plate 1, a second sealing surface formed by the outer peripheral surface 222 of the sealing ring and the inner peripheral surface of the fixing ring 24, and a third sealing surface formed by the upper surface 221 of the sealing ring and the lower surface of the encapsulation inner ring 23.

The lower surface of the sealing ring 22 is provided with a sealing part;

further, the sealing portion is disposed at an end portion of the lower surface of the sealing ring 22, the sealing portion is an encapsulation protrusion 2232, and a groove is formed adjacent to the encapsulation protrusion 2232. The first sealing surface includes a flat sealing surface formed by pressing the encapsulation protrusion 2232 against the upper surface of the top cover plate 1 under pressure to form an end sealing surface, and a flat surface 2231 on the lower surface contacting the top cover plate 1. The sealing ring 22 provides a sealing effect, and at the same time, supports the supporting disc 211, and thus the pole 21.

The encapsulated fixing ring 7 comprises: the encapsulation inner ring 23 is wrapped on the periphery of the pole 21, and the fixing ring 24 is wrapped on the peripheries of the encapsulation inner ring 23 and the sealing ring 22;

specifically, when the fixing ring 24 is injection molded by an injection molding machine, the annular inner protrusion 242 is integrally injection molded, and the annular inner protrusion 242 is used for limiting the rubber-coated inner ring 23, so that the rubber-coated inner ring 23 is stable and does not fall off. When the encapsulating inner ring 23 is encapsulated and formed by an encapsulating machine, an annular groove 232 is formed on the outer periphery of the encapsulating inner ring 23 due to the existence of the annular inner protrusion 242.

The rubber coating inner ring 23 and the fixing ring 24 are of an integrally formed structure, an annular groove 232 is formed in the outer periphery of the rubber coating inner ring 23, and a plurality of positioning columns 231 are arranged in the annular groove 232;

an annular inner protrusion 242 is arranged at the upper part of the fixing ring 24, and a plurality of positioning holes 2421 corresponding to the positioning columns 231 are arranged on the annular inner protrusion 242;

further, since the plurality of positioning holes 2421 are formed in the annular inner protrusion 242, when the encapsulating inner ring 23 is encapsulated by an encapsulating machine, a plurality of positioning posts 231 corresponding to the positioning holes 2421 are encapsulated, and the positioning posts 231 are correspondingly matched with the positioning holes 2421, so that the encapsulating fixing ring 7 is formed into an integrated structure, and the stability and the strength of the fixing ring 24 are improved.

Furthermore, the fixing ring 24 is an annular fixing ring 24, the annular inner protrusion 242 is adapted to the annular fixing ring 24, the annular fixing ring 24 includes two arc-shaped sections and two straight-surface sections connecting the two arc-shaped sections, two positioning holes 2421 are disposed on the upper surface of each straight-surface section of the annular inner protrusion 242 corresponding to the annular fixing ring 24, and only one positioning hole 2421 is disposed in the middle of each arc-shaped section of the annular inner protrusion 242 corresponding to the annular fixing ring 24. Accordingly, the positioning posts 231 are disposed corresponding to the positioning holes 2421.

In some possible embodiments, the number of the positioning holes 2421 and the positioning posts 231 may be smaller or larger, and is not limited in detail.

A positioning ring body 241 is formed at the lower part of the outer periphery of the fixing ring 24, a sinking groove 11 is formed at the periphery of the pole mounting hole 12, and the sinking groove 11 is adapted to the positioning ring body 241.

Further, the battery cover plate includes: be provided with the lamina tecti 1 of utmost point post mounting hole 12 to and the corresponding lower plastic 3 that is provided with utmost point post 21 and sets up the hole, plastic 3 sets up down the below of lamina tecti 1. The lower plastic 3 is used for supporting the top cover plate 1 and can also support the pole 21.

Further, the top cover plate 1 is obtained through injection molding by an injection molding machine, two pole mounting holes 12 are reserved in the top cover plate 1 in the injection molding process and used for mounting the poles 21, each pole 21 comprises a positive pole 21 and a negative pole 21, and the positive pole 21 and the negative pole 21 are respectively arranged on the two pole mounting holes 12; the blast hole 4 that the in-process of lamina tecti 1 was being moulded plastics was reserved is used for setting up rupture disk 5, rupture disk 5 passes through laser welding on blast hole 4, rupture disk 5 is when battery internal pressure is too big, and the timely blasting is opened and is carried out the pressure release. The periphery of the pole mounting hole 12 of the top cover plate 1 is provided with a sunken groove 11, and the sealing ring 22 and the fixing ring 24 are installed in the sunken groove 11.

Further, obtain through injection molding machine injection moulding 3 down plastic, plastic 3 is at the in-process of moulding plastics down, and it has two utmost point post mounting holes 12 and a blast hole 4 to reserve, two utmost point post mounting holes 12 on the plastic 3 are used for the installation down utmost point post 21, utmost point post 21 includes anodal post 21 and negative pole post 21, anodal post 21 with negative pole post 21 sets up two respectively on the utmost point post mounting hole 12. Utmost point post 21 on the plastic 3 sets up the annular brace table 31 that the periphery set up down, annular brace table 31 is used for supporting disk body 211, and then supports utmost point post 21 prevents that utmost point post 21 from dropping inside getting into the battery.

In the embodiment of the battery cover plate, the lower surface of the pole 21 is arranged on the upper end surface of the opening of the pole mounting hole 12, and the pole 21 does not penetrate through the pole mounting hole 12, so that the space occupied by the pole 21 in the battery is not occupied, and the internal space of the battery is obviously improved. The height of the pole 21 is preferably 3.0mm to 3.6 mm. The length of the traditional battery pole is more than 7.0mm, and because the anti-falling structure of the pole 21 is the supporting disc body 211 and is positioned above the top cover plate 1, a supporting structure does not need to be arranged in the battery, so that the length requirement of the pole 21 is greatly reduced, and the height of the pole is only half of that of the traditional pole.

Further, the lower surface of the pole 21 is arranged on the upper end face of the opening of the annular support platform 31, and the pole 21 does not penetrate through the pole mounting hole 12, so that the space occupied by the pole 21 in the battery is not occupied, and the internal space of the battery is obviously improved.

As a possible embodiment, as shown in fig. 12, a positioning table 212 is disposed on the lower surface of the pole 21, the positioning table is disposed in the annular support table 31, and the positioning table 212 aligns the pole 21 with the pole mounting hole 12 to facilitate mounting the pole 21. Meanwhile, the positioning table 212 extends into the pole mounting hole 12 and does not completely penetrate through the pole mounting hole 21, so that the space occupied by the pole 21 in the battery is not occupied, and the internal space of the battery is obviously increased.

In a fourth aspect, as shown in fig. 6 to 9, a structure of a sealing ring 22 is further provided, where the sealing ring 22 is disposed on an electrode post 21, a supporting disc body 211 is disposed on the electrode post 21, the sealing ring 22 is wrapped around the supporting disc body 211, and the sealing ring is formed by encapsulation.

As a possible embodiment of the sealing ring, the sealing ring 22 includes an injection molded substrate wrapping the injection molded substrate 211 and an encapsulating layer wrapping the injection molded substrate, and a sealing portion is disposed at the bottom of the sealing ring 22. Specifically, the injection molding substrate is formed by injection molding through an injection molding machine on the support disc body 211, so that the injection molding substrate wraps up the support disc body 211, the injection molding substrate is supported by the support disc body 211, meanwhile, the contact area between the injection molding substrate and the support disc body 211 is increased, the injection molding substrate is not prone to falling off, and the integrated structure of the encapsulated pole 6 is more stable.

The rubber coating layer is in through rubber coating machine the rubber coating shaping of moulding plastics the base obtains, the rubber coating layer is the sealing washer 22 forms the important structure of sealed face, the rubber coating layer parcel the base of moulding plastics, with the base of moulding plastics reaches when utmost point post 21 forms the integral structure, combine figure 9, because the base parcel of moulding plastics supports disk body 211, makes the rubber coating layer is also in support annular notch 2111 on the disk body 211 support disk body 211 outer peripheral edges and the lower surface rubber coating of supporting disk body 211 is formed right support disk body 211 forms the parcel, thereby has increased the sealed face of sealing washer 22.

Further, referring to fig. 9, the sealing portion is disposed at an end portion of the lower surface of the sealing ring 22, the sealing portion is a semicircular encapsulated protrusion 2232, and a groove is formed adjacent to the encapsulated protrusion 2232.

The foregoing is a more detailed description of the present invention in connection with specific preferred embodiments thereof, and it is not intended that the specific embodiments of the present invention be limited to these descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.