CN210182424U - Lead-acid storage battery terminal sealing structure capable of preventing acid leakage - Google Patents

Abstract

The utility model discloses a prevent acid-climbing's lead acid battery terminal seal structure, it is downthehole that the terminal stretches into the terminal of battery cover from battery inner chamber, be provided with a plurality of annular grooves along central axial on the outer periphery of terminal, the sub-unit connection of terminal has the busbar, the busbar is established ties into an organic whole with utmost point ear on the utmost point crowd, the position below the annular groove covers has the vulcanite cover on the outer periphery of terminal, space between terminal and the terminal downthehole wall is filled by supreme O shape sealing rubber ring, the sealing ring, pressure pad nut and colour glue in proper order down. The utility model discloses can ensure lead acid battery terminal seal structure associativity, can also realize the terminal seal operation simplification.

Description

Lead-acid storage battery terminal sealing structure capable of preventing acid leakage

Technical Field

The utility model relates to a battery technology field, more specifically say, relate to a prevent acid-climbing's lead acid battery terminal seal structure.

Background

When the valve-regulated sealed lead-acid storage battery is used, sulfuric acid electrolyte in the lead-acid storage battery gradually climbs along the surface of an end pole (a terminal is called as a terminal for short, generally, the terminal is of an integral structure made of lead alloy, and the terminal is of a combined structure with a copper core and a lead sleeve connected with the copper core and the lead sleeve, and the phenomenon is called as acid climbing in the industry, and when the acid climbs to the top end of the terminal of the lead-acid storage battery, potential safety hazards or service life of the storage battery are caused.

At present, the lead-acid storage battery terminal sealing measures for preventing acid leakage in the new energy battery industry are mainly classified into two types: the structure type and the process type, specifically, the structure type mainly optimizes the design of a terminal sealing structure of a lead-acid storage battery, a sealing ring type part is additionally arranged along the outer edge of a terminal main body, and the sealing ring type part is usually provided with a sealing rubber ring, a sealing ring and the like, but the combination of the terminal main body made of metal and the sealing ring type part is difficult to be tight, and the sulfuric acid electrolyte is difficult to avoid gradually climbing to the top end of the terminal along the surface of the terminal along with the prolonging of the service time; the process type is to optimize the terminal sealing process of the lead-acid storage battery, the use of epoxy resin glue is mainly optimized, the terminal sealing generally relates to two types of epoxy resin glue, one type is color glue (used for marking polarity and giving consideration to sealing performance), the other type is sealant (used for increasing sealing performance), and the epoxy resin glue using process generally selected and adopted in the production process is also divided into two types: the pure color glue, the bottom sealant and the upper color glue are poor in combination with the terminal and the storage battery cover and poor in binding force between the color glue and the sealant, so that the terminal sealing effect of the pure color glue is poor, the binding force between the sealant and the terminal and the storage battery cover is strong, but the use process operation of the bottom sealant and the upper color glue is complicated, and the fault of leaking and filling the bottom sealant is easy to occur.

In conclusion, how to ensure the binding property of the terminal sealing structure of the lead-acid storage battery and realize the simplification of the terminal sealing operation is a problem which needs to be solved urgently by technical personnel in the field at present.

Disclosure of Invention

In view of this, the utility model aims at providing a prevent acid-climbing lead acid battery terminal seal structure can ensure lead acid battery terminal seal structure associativity, realizes the terminal seal operation simplification.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a prevent acid-climbing lead acid battery terminal seal structure, includes battery cover, terminal, utmost point crowd, busbar, its characterized in that, the terminal stretches into from the battery inner chamber the terminal of battery cover is downthehole, be provided with a plurality of annular grooves along central axial on the outer periphery of terminal, the sub-unit connection of terminal has the busbar, the busbar will utmost point ear on the crowd establishes ties into an organic whole, the position below the annular groove covers has the vulcanite cover on the outer periphery of terminal, the terminal with space between the terminal downthehole wall is filled by supreme O shape seal rubber ring, sealing ring, pressure pad nut and the colour glue down in proper order, the pressure pad nut sets up the outer periphery annular groove lower part of terminal, there is sealing thread on the inner wall of terminal hole, sealing thread with pressure pad nut adaptation, the vulcanized rubber sleeve is in contact with the sealing rubber ring, the sealing ring and the pressure pad nut.

Preferably, the terminal is a structure that a copper core is sleeved outside and connected with a lead sleeve, and a plurality of annular grooves are axially arranged on the outer circumferential surface of the upper end of the lead sleeve along the center.

The utility model provides a lead-acid storage battery terminal sealing structure, a plurality of annular grooves are arranged along the central axial direction on the outer circumferential surface of the terminal, the contact surface of the terminal and the possible acid-climbing path length are increased, a layer of vulcanized rubber sleeve covers the part below the annular groove on the outer circumferential surface of the terminal, a sealing rubber ring, a sealing ring and a pressure pad nut are sequentially arranged in the space between the terminal and the inner wall of a terminal hole from bottom to top, the sealing rubber ring, the sealing ring and the pressure pad nut are all contacted with the vulcanized rubber sleeve, the pressure pad nut is closely matched with the sealing thread on the inner wall of the terminal hole in a rotating way, so that the contact interface of the whole sealing structure between the storage battery cover and the terminal is completely sealed, the binding performance of the sealing structure is stronger, the possibility of climbing of sulfuric acid electrolyte in the contact interface is obviously reduced, meanwhile, the pure color glue is filled, therefore, the process operation is simple and efficient. To sum up, the utility model relates to a prevent acid-climbing's lead acid battery terminal seal structure can ensure lead acid battery terminal seal structure associativity, can also realize the terminal seal operation simplification.

Drawings

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

Fig. 1 is a schematic structural diagram of a lead-acid battery disclosed in an embodiment of the present application.

Fig. 2 is a schematic view of a terminal sealing structure of a lead-acid battery disclosed in an embodiment of the present application.

Fig. 3 is an enlarged schematic view of a terminal sealing structure of a lead-acid storage battery disclosed in an embodiment of the present application.

In the figure, 1, a storage battery cover, 2, a copper core, 3, a lead sleeve, 4, a busbar, 5, a pole lug, 6, a pole group, 7, color glue, 8, a vulcanized rubber sleeve, 9, a sealant coating, 11, a terminal hole, 12, a sealing thread, 13, a pressure pad nut, 14, a sealing ring and 15, and a sealing rubber ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a lead-acid battery disclosed in an embodiment of the present application.

As shown in figure 1, the terminal is manufactured by the way that the lower part of the copper core (2) is nested with the lead sleeve (3) and is welded by casting welding. In FIG. 2, a plurality of annular grooves are axially arranged on the outer circumferential surface of the upper end of a lead sleeve (3) along the center, so that the contact surface of the terminal and the length of a possible acid-climbing path are increased, a layer of vulcanized rubber sleeve (8) covers the part below the annular grooves on the outer circumferential surface of the terminal, then the treated terminal and a bus bar (4) are cast-welded and welded together, and the appearance of the terminal and the bus bar (4) is cleaned by alcohol cotton; dipping the prepared epoxy resin sealant by using a brush, and uniformly coating a sealant coating (9) along the outer circumferential surface of the terminal below the vulcanized rubber sleeve (8), the upper surface of the busbar (4) and the ring surface; and transferring the polar group (6) treated in the step into an industrial curing kiln for drying and curing, and reducing the fluidity of the sealant. The terminal is stretched into a terminal hole (11) of a storage battery cover (1), a sealing rubber ring (15), a sealing ring (14) and a pressure pad nut (13) are sequentially installed in a space between the terminal and the inner wall of the terminal hole (11) from bottom to top, and the pressure pad nut (13) is matched with a sealing thread (12) on the inner wall of the terminal hole (11) in a rotating mode tightly. The prepared color glue (7) is filled into the space at the upper part of the pressure pad nut (13) until the color glue (7) is flush with the upper surface of the storage battery cover (1), and the operation is simple and efficient because the pure color glue (7) is filled.

When the storage battery is used, the sulfuric acid electrolyte in the storage battery can climb to the ring surface of the busbar (4) along the tab (5) along with the prolonging of the service time, and a sealant coating (9) is uniformly coated along the outer circumferential surface of the terminal below the vulcanized rubber sleeve (8), the upper surface of the busbar (4) and the ring surface, so that the speed of the sulfuric acid electrolyte further climbing to the path of the upper surface of the busbar (4) and the outer circumferential surface of the terminal below the vulcanized rubber sleeve (8) is effectively delayed.

In the figure 3, a sealing rubber ring (15), a sealing ring (14) and a pressure pad nut (13) are sequentially installed in a space between the terminal and the inner wall of the terminal hole (11) from bottom to top, the sealing rubber ring (15), the sealing ring (14) and the pressure pad nut (13) are all in contact with the vulcanized rubber sleeve (8), the pressure pad nut (13) is in rotary adaptation with a sealing thread (12) on the inner wall of the terminal hole (11) tightly, so that the contact interface of the whole sealing structure between the storage battery cover (1) and the terminal is completely closed, and compared with the direct contact between the sealing rubber ring (15), the sealing ring (14) and the like and a terminal main body made of a metal material, the tight effect is difficult to achieve, the sealing structure is stronger in associativity, and the possibility that sulfuric acid electrolyte climbs in.

As shown in the table below, compared with the results of simulation effect verification and comparison of the common industrial process method, the terminal sealing structure and the process can isolate the whole surface of the terminal from the sulfuric acid electrolyte environment, and the sulfuric acid electrolyte is effectively blocked and sealed along the acid climbing path of the terminal surface, so that the service life of the valve control sealed lead-acid storage battery is better ensured, and potential safety hazards such as corrosion, short circuit and the like caused by leakage at the top end of the terminal are avoided.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (2)

1. The utility model provides a prevent acid-climbing lead acid battery terminal seal structure, includes battery cover, terminal, utmost point crowd, busbar, its characterized in that, the terminal stretches into from the battery inner chamber the terminal of battery cover is downthehole, be provided with a plurality of annular grooves along central axial on the outer periphery of terminal, the sub-unit connection of terminal has the busbar, the busbar will utmost point ear on the crowd establishes ties into an organic whole, the position below the annular groove covers has the vulcanite cover on the outer periphery of terminal, the terminal with space between the terminal downthehole wall is filled by supreme O shape seal rubber ring, sealing ring, pressure pad nut and the colour glue down in proper order, the pressure pad nut sets up the outer periphery annular groove lower part of terminal, there is sealing thread on the inner wall of terminal hole, sealing thread with pressure pad nut adaptation, the vulcanized rubber sleeve is in contact with the sealing rubber ring, the sealing ring and the pressure pad nut.

2. The lead-acid storage battery terminal sealing structure according to claim 1, wherein the terminal is a copper core outer sleeve connecting lead sleeve structure, and a plurality of annular grooves are arranged on the outer circumferential surface of the upper end of the lead sleeve along the central axial direction.

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