CN215184254U

CN215184254U - Lead accumulator's glueless seal structure

Info

Publication number: CN215184254U
Application number: CN202120889423.9U
Authority: CN
Inventors: 沈旭培; 陈勤忠; 高银; 王娟
Original assignee: Tianneng Battery Group Co Ltd
Current assignee: Tianneng Battery Group Co Ltd
Priority date: 2021-04-27
Filing date: 2021-04-27
Publication date: 2021-12-14
Anticipated expiration: 2031-04-27

Abstract

The utility model provides a lead accumulator's no glue seal structure relates to lead accumulator technical field. A glue-free sealing structure of a lead storage battery comprises a cover body and a terminal, wherein the top surface of the cover body is provided with a terminal groove for accommodating the terminal, the bottom surface of the terminal groove is provided with a terminal hole for the terminal to extend out, the terminal comprises an end pole penetrating through the terminal hole and made of lead, and a copper core with the bottom end embedded into the top end of the end pole, and the copper core is provided with a wiring screw hole with an opening on the top surface; the terminal groove side wall is nested with a lead sleeve, the terminal extends into the lead sleeve, and the terminal post and the top of the lead sleeve are welded into a whole in a circle through hot melting mode. The utility model discloses the simple installation, lead accumulator's sealing performance improves, and the subassembly processing degree of difficulty is little, need not to use glue, improves production efficiency.

Description

Lead accumulator's glueless seal structure

Technical Field

The utility model relates to a lead accumulator technical field, concretely relates to lead accumulator's no glue seal structure.

Background

The lead storage battery has a mature and stable process through long development, and the performance is safer and more reliable. The lead storage battery has higher cost performance due to the lower price advantage, and has a higher share in the market. However, with the development of society, the society has made higher demands on the structure and various performances of lead storage batteries. Generally, the shell of the lead storage battery is made of ABS plastic, the sealing glue at the battery terminal is epoxy resin, the coefficients of expansion with heat and contraction with cold are different under different temperature conditions, and the problems of high sealing difficulty of the battery terminal, poor sealing effect and the like can be caused. In addition, the sulfuric acid electrolyte adopted in the lead storage battery has high corrosivity, so that the end pole can be corroded, the sulfuric acid electrolyte can climb up along the end pole, the battery terminal and the sealant can be corroded, and the acid leakage of the lead storage battery can be caused.

The utility model with publication number CN209487547U discloses a sealing structure for a terminal post of a storage battery, which comprises a storage battery middle cover, a lead sleeve, a terminal post and a storage battery terminal, wherein a glue groove is arranged on the storage battery middle cover, a first through hole is arranged at the bottom of the glue groove, the lead sleeve is embedded in the first through hole in a sealing manner, and the top of the lead sleeve is higher than the first through hole to form a first layer of seal; a second through hole is formed in the lead sleeve, one end of the pole column penetrates through the second through hole and is higher than the upper surface of the lead sleeve, the storage battery terminal is installed in the rubber groove and is in contact with the upper part of the lead sleeve, and the pole column, the lead sleeve and the storage battery terminal are integrated into a whole through a welding gun to form a second layer of seal; and injecting sealant into other gaps in the glue groove to form a third layer of seal. This scheme has designed the three-layer and has sealed, though can reach better sealed effect, nevertheless can still appear in the battery between lid and the sealed glue because the expend with heat and contract with cold coefficient difference and the weeping problem that appears.

The utility model with publication number CN212323089U discloses a glue-free terminal sealing structure of a storage battery, which comprises a middle cover and a terminal, wherein the middle cover is provided with a terminal hole for the terminal to penetrate out, the periphery of the terminal is coated with a connecting sleeve which passes through the terminal hole, one end of the connecting sleeve, which is positioned at the inner side of the battery, is provided with a saddle, and a sealing ring is arranged at the periphery of the connecting sleeve and between the saddle and the middle cover; the connecting sleeve is located at one end of the outer side of the battery and is provided with a threaded section, the threaded section is provided with an external thread, and the periphery of the threaded section is provided with a compression nut which is in threaded fit with the threaded section and abuts against the top surface of the middle cover. Although this scheme has designed no glue formula battery terminal seal structure, but this experimental scheme saddle is equipped with the sealing washer between the well lid, and the sealing washer is corroded ageing by acidizing fluid easily.

SUMMERY OF THE UTILITY MODEL

For solving among the prior art between battery case and the sealed glue the weeping problem that appears because the expend with heat and contract with cold coefficient is different, the utility model provides a lead accumulator's no glue seal structure, simple to operate need not to use glue.

A glue-free sealing structure of a lead storage battery comprises a cover body and a terminal, wherein the top surface of the cover body is provided with a terminal groove for accommodating the terminal, the bottom surface of the terminal groove is provided with a terminal hole for the terminal to extend out, the terminal comprises an end pole penetrating through the terminal hole and made of lead, and a copper core with the bottom end embedded into the top end of the end pole, and the copper core is provided with a wiring screw hole with an opening on the top surface; the terminal groove side wall is nested with a lead sleeve, the terminal extends into the lead sleeve, and the terminal post and the top of the lead sleeve are welded into a whole in a circle through hot melting mode.

The end pole and the lead sleeve are made of lead materials, the coefficients of expansion with heat and contraction with cold are the same, synchronous expansion and contraction can be realized by hot-melt welding of the same materials, cracks are not easy to generate, and the sealing performance between the end pole and the lead sleeve is guaranteed. The lead sleeve is nested in the side wall of the terminal groove, glue is not needed for bonding, cost is saved, and the lead sleeve is not easily corroded by electrolyte.

Preferably, the outer peripheral surface of the lead sleeve is provided with a plurality of circles of convex rings which are arranged at intervals along the axial direction of the lead sleeve, the lead sleeve is embedded in the cover body during injection molding, the convex rings arranged on the periphery of the lead sleeve can increase the interaction between the lead sleeve and the cover body, the lead sleeve is not easy to fall off from the cover body, and the sealing performance of the lead storage battery is improved.

Further preferably, the bottom surface of the lead sleeve is provided with a ring of convex rings, and the ring of convex rings is abutted with the bottom surface of the terminal groove.

Further preferably, the side wall of the terminal hole and the opening of the bottom surface of the lead sleeve are provided with chamfers which facilitate the terminal to stretch into, and the chamfers are arranged to play a certain guiding role in the terminal to stretch into the lead sleeve.

As preferred, the terminal top still is equipped with the protecting cover, the protecting cover includes that the oral area of the downward lid portion of opening, lid portion is equipped with the round brim of a hat, the roof of lid portion has the mounting hole that supplies the copper core to pass, the lid top surface has and encircles terminal groove sets up, is used for holding the annular stair structure of the brim of a hat, the brim of a hat bottom surface has the welding point that fuses with the step face ultrasonic bonding of annular stair structure.

Preferably, the top surface of the ring at the uppermost part of the lead sleeve is flush with the step surface of the annular step structure, and the inner part of the bottom surface of the brim is abutted with the ring.

Preferably, the top surface of the cap peak is flush with the top surface of the cap body, and the bottom of the side wall of the cap body is provided with a liquid leakage hole.

The utility model has the advantages that:

the utility model discloses the simple installation, lead accumulator's sealing performance improves, and the subassembly processing degree of difficulty is little, need not to use glue, improves production efficiency.

Drawings

Fig. 1 is a schematic front view of the terminal of the present invention.

Fig. 2 is a schematic view of a partial cross-section of the terminal of the present invention.

Fig. 3 is a schematic sectional view of the lead sheath of the present invention.

Fig. 4 is a schematic cross-sectional view of the cap body and the lead sheath of the present invention.

Fig. 5 is a schematic view of a partial cross-section of the cover, lead sheath and terminal of the present invention.

Figure 6 is a schematic top view of the protective cover of the present invention.

Figure 7 is a front cross-sectional view of the protective cover of the present invention.

Fig. 8 is a perspective view of the protective cover of the present invention.

Fig. 9 is a schematic view of a partial cross-sectional view of the cover, terminals and cover assembly of the present invention.

Fig. 10 is a schematic cross-sectional view of the cover, lead sheath, terminal and protective cover of the present invention.

In the figure, the cover body 1, the terminal groove 11, the terminal hole 12, the annular step structure 13, the terminal 2, the terminal post 21, the copper core 22, the wiring screw hole 23, the lead sleeve 3, the convex ring 31, the chamfer 32, the protecting cover 4, the cap part 41, the cap peak 42, the mounting hole 43, the welding point 44 and the liquid leakage hole 45.

Detailed Description

As shown in fig. 1-10, a lead accumulator's no glue seal structure, including lid 1, terminal 2 and lead sleeve 3, the top surface of lid 1 has the terminal groove 11 that holds terminal 2, terminal groove 11 bottom surface has the terminal hole 12 that supplies terminal 2 to stretch out, the lateral wall nestification of terminal groove 11 has lead sleeve 3, lead sleeve 3 imbeds when lid 1 moulds plastics, terminal 2 stretches into lead sleeve 3 through terminal hole 12 in, the top of terminal 2 is equipped with protecting cover 4, the process of terminal 2, lead sleeve 3 and lid 1 assembly need not to use glue, practice thrift manufacturing cost.

The top surface of the cover body 1 is provided with an annular step structure 13 which is arranged around the terminal groove 11 and used for accommodating the brim 42, the bottom surface of the brim 42 is provided with a welding point 44 which is welded with the step surface of the annular step structure 13 by ultrasonic welding, the brim 42 and the annular step structure 13 are welded by ultrasonic welding, glue does not need to be used, and the sealing performance between the brim 42 and the annular step structure 13 after ultrasonic welding is better.

Terminal 2 includes end utmost point post 21, copper core 22 and the wiring screw 23 of plumbous system, and the 21 top of end utmost point post is inlayed to the bottom of copper core 22, and end utmost point post 21 passes terminal hole 12, has top surface open-ended wiring screw 23 on the copper core 22, and terminal 2 stretches into in the lead sheath 3, and end utmost point post 21 is as an organic whole with the top round hot melt welding of lead sheath 3.

The outer peripheral surface of the lead sleeve 3 is provided with a plurality of circles of convex rings 31 which are arranged at intervals along the axial direction of the lead sleeve 3, the top surface of the circle of convex ring 31 positioned at the uppermost part of the lead sleeve 3 is flush with the step surface of the annular step structure 13, the circle of convex ring 31 at the bottom surface of the lead sleeve 3 is abutted against the bottom surface of the terminal groove 11, a chamfer 32 which is convenient for the terminal 2 to extend into is arranged at the opening of the bottom surface of the lead sleeve 3, and the setting of the chamfer 32 plays a certain guiding role in the terminal 2 extending into the lead sleeve 3.

The bottom surface of the terminal groove 11 is provided with a terminal hole 12 for the terminal 2 to extend out, and the opening of the bottom surface of the side wall of the terminal groove 11 is provided with a chamfer 32 for the terminal 2 to extend into.

The protecting cover 4 comprises a cover part 41 with a downward opening, a ring of cap brim 42 is arranged at the opening part of the cover part 41, the top wall of the cover part 41 is provided with a mounting hole 43 for the copper core 22 to pass through, the top surface of the cap brim 42 is flush with the top surface of the cover body 1, the inner part of the bottom surface of the cap brim 42 is abutted with the uppermost convex ring 31, and the bottom of the side wall of the cover part 41 is provided with a liquid leakage hole 45.

The utility model discloses an assembling process:

pass lead sheath 3 from terminal hole 12 with terminal 2, as an organic whole with the round hot melt welding at end utmost point post 21 and lead sheath 3 top during the contact of end utmost point post 21 and lead sheath 3, glue is not used, end utmost point post 21 is the lead material preparation with lead sheath 3 and forms, its expend with heat and contract with cold coefficient is the same, synchronous inflation and shrink can be realized to the welding of same material, be difficult for producing the crackle, guarantee the sealing performance between end utmost point post 21 and the lead sheath 3, the hot melt welding department cools off the back, cover protecting cover 4 in terminal groove 11 department, terminal 2 passes the mounting hole 43 of protecting cover 4, fuse with the welding point 44 of brim of a hat 42 bottom surface and the step face of annular stair structure 13 with ultrasonic welding machine, accomplish seal assembly.

Claims

1. A glue-free sealing structure of a lead storage battery comprises a cover body and a terminal, wherein the top surface of the cover body is provided with a terminal groove for accommodating the terminal, and the bottom surface of the terminal groove is provided with a terminal hole for the terminal to extend out; the terminal groove side wall is nested with a lead sleeve, the terminal extends into the lead sleeve, and the terminal post and the top of the lead sleeve are welded into a whole in a circle through hot melting mode.

2. The non-adhesive sealing structure according to claim 1, wherein the outer circumferential surface of the lead sleeve is provided with a plurality of rings arranged at intervals along the axial direction of the lead sleeve, and the lead sleeve is embedded when the cover body is injection-molded.

3. The adhesive-free sealing structure of claim 2, wherein the bottom surface of the lead sleeve is provided with a ring of convex rings, and the ring of convex rings is abutted with the bottom surface of the terminal groove.

4. The adhesive-free sealing structure of claim 3, wherein the side wall of the terminal hole and the opening of the bottom surface of the lead sleeve are provided with chamfers for facilitating the insertion of the terminal.

5. The non-adhesive sealing structure according to claim 2, wherein the terminal top is further provided with a protecting cover, the protecting cover comprises a cap part with a downward opening, a ring of brim is arranged at the mouth of the cap part, the top wall of the cap part is provided with a mounting hole for the copper core to pass through,

the top surface of the cover body is provided with an annular step structure surrounding the terminal groove and used for accommodating the cap peak, and the bottom surface of the cap peak is provided with a welding point fused with the step surface of the annular step structure through ultrasonic welding.

6. A glueless sealing structure as claimed in claim 5, wherein the top face of a ring of the collar at the uppermost part of the lead sleeve is flush with the step face of the annular step structure, and the inner part of the bottom face of the visor abuts against the collar.

7. A glueless sealing structure as claimed in claim 5, characterized in that the top surface of the visor is flush with the top surface of the cover, and the bottom of the side wall of the cover part is provided with a leakage hole.