MXPA06004990A - Battery part - Google Patents

Abstract

A battery part such as a battery terminal and method of making the same with the battery part having a sealing region or sealing bead located on a lateral face of the acid ring with the beveled sealing region increasing the resistance to leakage therepast as the container shrinks. Another embodiment of the invention comprises a battery part with a bifurcated acid ring end and a beveled end face. The invention further includes the method of forming a battery terminal with an end face of the acid ring having a bifurcated end lip and a beveled face that permits one to either use the battery terminal in an as is condition or in a flared condition wherein a lip on the acid ring is flared to form a beveled sealing region on the lateral face of the acid ring.

Description

BATTERY PART DESCRIPTION FIELD OF THE INVENTION This invention relates generally to battery parts and, more specifically, to a battery part and to a method for flapping an acid ring to form an improved sealing region with opportunities reduced to the minimum of stress cracking production on the part of the battery. battery. This application claims the priority of provisional application serial number 60 / 533,924 filed on January 2, 2004 entitled "Battery Part and Method of Making" (Battery Part and Method of Preparation) and is a continuation in part of patent application 10 / 804,401 of the United States of America filed on March 18, 2004 entitled "Battery Part".

BACKGROUND OF THE INVENTION Battery parts such as battery terminals, which are typically cold formed or pressure molded, are normally secured to a container with one portion of the battery terminal located inside the container and another portion located outside of the container. The battery containers, which are typically plastics for example polyethylene, are molded around a set of acid rings that are located on the portion of the terminal that is located inside the container. The acid rings provide an extended interface and therefore a sinuous path to inhibit or prevent the electrolyte from leaking out of the battery container. Because the acid must follow an extended interface to escape, this type of seal, with a system or set of concentric acid rings, is often referred to as a labyrinth seal. Because the battery terminals slip or form cold, the radially protruding acid rings are generally formed with either a rectangular cross-sectional shape or a slight outer taper to facilitate removal of the terminals from the battery. battery, mold. Although battery terminals having a generally rectangular cross-sectional shape are widely used, acid rings with other shapes have been used to prevent the plastic container from contracting away from the terminal and disrupting the interface between the battery part and the battery. the container which could cause electrolyte leakage. Generally, these types of acid rings provide lateral coupling between the acid ring and the container. For example, the description of United Kingdom patent GB1236495 of 1971 discloses a battery terminal where two acid rings are bent towards each other to provide a dovetail-shaped recess extending throughout the entire length of the body. the length of the acid ring so as to allow the two adjacent acid rings to form a dovetail joint with the battery container and thereby provide lateral coupling between the acid ring and the container. The description of the United Kingdom patent GB 1,245,255 of 1971 mentions three acid rings that have been deformed to create a dovetail-shaped gap between adjacent acid rings with the dovetail gap extending over the entire length of the acid ring to form two dovetail joints with the container and thus provide lateral coupling between the acid ring and the container. In this embodiment, the acid rings are compressed enough to deform the acid rings so that the acid ring tapers inwardly over the entire length of the ring, ie, from the circumferential edge of the acid ring to the base of the ring. acid ring.

Japanese patent JP56159054 of 1981 discloses a further embodiment wherein the acid battery terminal rings deform over the entire length of the acid ring to form sloping projections on the acid rings that couple the cover to provide effective liquid tightness and, in this way, provide lateral coupling between the acid ring and the container. German patent DE 4127956 of 1993 by Hofmann discloses a battery terminal where the ends of the acid rings have been rounded and the lower acid ring has been provided with a wedge-shaped profile to increase the sealing effect with a container and thereby provide lateral coupling between the acid ring and the container. German patent DE 4241393 Cl of 1994 by Hofmann describes a battery terminal where the ends of the acid rings have been rounded and a scour or tongue forming a hook, which is located in the back of the acid ring. The "hook" on the back of the acid ring engages in the plastic container, that is, for lateral anchorage of the container and to prevent the plastic material of the battery container from contracting away from the battery terminal. In addition, a further embodiment is described wherein adjacent acid rings are of the same thickness but are tilted away from one another to laterally anchor the package with respect to the acid rings. European Patent 0601 268 Bl of 1992 by Hofmann discloses a battery terminal where the ends of the acid rings have a rounded end or a triangular shaped end with a tongue or hook on the back side of the acid ring. This "hook" on the back of the deformed acid ring engages the plastic to prevent the plastic material of the battery pack from contracting away from the battery terminal by laterally anchoring the container with respect to the acid rings. European Patent Application 0601 268 A1 of 1992 by Hofmann also discloses the battery terminal where the ends of the acid rings have a rounded end or a triangular end with a tongue or scour or hook on the back sides of the acid ring. In addition, a further embodiment of an acid ring is described wherein two adjacent acid rings, which are of the same thickness, lean away from each other to laterally anchor the container with respect to the acid rings forming a dovetail joint. German patent application DE 394217A1 of 1989 by Hofmann describes a method for forming a battery terminal with acid rings by cold rolling the terminal to form the circumferential acid rings.

US Pat. No. 6,644,084 to Speigelberg describes a process for forming an acid ring with a hook, first deforming the terminal of the battery from an acid ring of rectangular shape to an acid ring in the shape of an arrowhead. The transformation to the hook shape is obtained by rotating the terminal of the battery relative to a cold forming roll to deform an acid ring with a rectangular cross section in an acid ring having a scour or opening. The cold rolling process involves the substantial deformation of the acid ring in the cast battery part to produce the hook for coupling the battery pack. While the state of the art provides acid rings with rectangular shapes that are bent or transformed in a different way by cold rolling to form a lateral anchor between the battery container and the terminal, the lateral anchor is obtained by forming a hook in the acid ring or forming a dovetail or dovetail-like coupling between the battery container and the battery terminal. In contrast to the acid rings of the state of the art, where the shape of the acid ring is substantially altered, in the present invention one can strain a battery part with the acid ring having a bifurcated end separated by a circumferential groove or an end with a single tapered ring lip. The bifurcated end produces two outer annular lips that extend outward on each acid ring. The annular lips on each acid ring can be flared away from each other to produce a beveled surface or sealing seam along an annular outer portion of each of the annular lips which not only laterally anchors the container with respect to the terminal but also forms an improved sealing region between the container and the acid ring. In addition, the indirect path provided by the bifurcated acid rings can increase the leak resistance of the electrolyte by providing a more sinuous interface between the acid rings and the container. Another feature of the invention is that the flapping of the lips can be obtained by applying a radial compressive force to the bifurcated ends of the acid ring. Since only the bifurcated ends of the acid ring are flared, the problems that can occur with the deformation of the cold forming of the state of the art of a press-molded battery terminal are substantially eliminated. That is, an interface between a press-molded part of the battery terminal and a cold-rolled part of the battery terminal leads to cracks or tension areas between the cast region and the cold formed region of the battery part, which It can be leaking electrolyte through there. By minimizing the interface, the opportunity to escape can be minimized. Thus the flapping of the lips on the bifurcated acid ring of the present invention produces a rear horn seal region extending circumferentially around the terminal which not only improves the seal but also anchors the lateral coupling between the container and the container. the acid rings and at the same time minimizes the occurrences of fractures or stress cracks in the metal having a portion of the original pressure molded form altered by cold rolling deformation. The present invention provides a battery part that eliminates the substantial deformation or acid ring transformation necessary to form a scour or opening in the acid ring or deform an acid ring along its entire length to form a glue coupling. milano as shown in GB 1,236,495; GB 1,245,255; JP 5619054 and EPO 06012681 Al. In addition, the present invention additionally eliminates the need to mechanically deform the acid ring from a rectangular shape to an acidic arrow head ring or an acid ring with a hook or an acid ring with a bevelled surface which extends along the entire length of the acid ring as shown in EPO 06012681 Bl and DE 4241393.

Thus, by flating the lip or lips over the circumferential end of the acid ring one can form ring sealing regions, anchor or laterally fix the package with respect to the acid ring, and inhibit the electrolyte from leaking from the battery pack with a more sinuous path . The present invention not only inhibits the escape or leakage of the electrolyte by providing a circumferential sealing ring but also facilitates the flow of the plastic around the acid ring since the flared lip extends along only a portion of the acid ring. In addition, the current process minimizes the voltage produced in the battery part when a substantial part of a press-molded battery terminal is subsequently transformed to a substantially different form by cold rolling since the lips at the end of the acid ring they can be flared instead of mechanically deforming into an entirely different shape.

SUMMARY OF THE INVENTION The invention comprises a battery part such as a battery terminal with the battery part having a sealing region or inclined sealing seam located on a side face of the acid ring with the sealing region increasing the leakage resistance while the container shrinks. Another embodiment of the invention comprises a battery part with a bifurcated acid ring end and a beveled end face. The invention further includes the method for forming a battery terminal with an end face of the acid ring having a bifurcated end and a beveled face that allows one to use the battery terminal in a condition as it is or in a flared condition wherein The lips at the bifurcated end of the acid ring can be flared to form a beveled sealing region that functions as an "O" ring or seal on the back of the acid ring.

BRIEF DESCRIPTION OF THE FIGURES Figure 1 is a partial cross-sectional view of a battery terminal with bifurcated acid rings. Figure 2 is a partial cross-sectional view of a chamber having fluidized particles that collide on a battery part therein. Figure 3 is a partial cross-sectional view of the battery terminal of Figure 1 after being exposed to the fluidized media or particles as illustrated in Figure 2.

Figure 4 is a partial side view showing radial hammering members for bending over the ends of the bifurcated acid rings in a battery terminal. Figure 5 is a top view of three radial hammering members located around the periphery of a battery terminal with the bifurcated acid rings. Figure 6 is a partial side view of a battery terminal having a set of acid rings with a valley or groove in the end face of the acid rings. Figure 7 is a top view of the battery terminal of Figure 8 in a clamping bushing. Figure 7A is a side sectional view showing the beveled surfaces and the side surface in an acid ring with bifurcated lips. Figure 7B is a detailed view of a portion of the acid rings to reveal the beveled sealing surfaces in the acid ring. Fig. 8 is a partial side view of the battery terminal of Fig. 6 in a clamping bushing in an enlarged condition. Figure 9 is a partial side view of the terminal and the battery clamping sleeve when the clamping sleeve partially contracts.

Fig. 10 is a partial side view 1 of the battery terminal of Fig. 6 when the clamping bushing is in a contracted condition. Figure 11 is a partial side view of the battery terminal of Figure 6 with the acid rings having been deformed by the clamping bushing. Figure 12 is a side view of an alternate embodiment wherein the acid ring is formed with a single lip in each acid ring. Figure 13 shows a tapered clamping bushing for deforming the battery terminal. Fig. 14 shows a partial cross-sectional view of a set of acid rings that have been deformed by the clamping bushing of Fig. 13.

DESCRIPTION OF THE PREFERRED MODALITY Figure 1 shows a battery part 10 comprising a battery terminal having an upwardly extending shoulder 11 and a hollow base 12 having a central opening 13 therein. Located around the outside of the battery terminal 10 is a set of bifurcated annular acid rings 15, 16, 17 and 18 which have been formed by a pressure molding process. That is, a mold divided into segments (not shown) which radially surrounds the sides of the battery part 10 during the casting process has been withdrawn radially away from the battery part 10 to release the battery part of the mold. Due to the configuration of the battery part and the need to pull the side parts of the mold radially or laterally away from the terminal the intermediate acid rings 15, 16 and 17 are often each provided with a slight taper. Each of the acid rings 15, 16 and 17 have been cast with a V-shaped annular groove located at the end of each of the acid rings. The placement of the groove at the end of the acid ring generates a bifurcated circumferential end for the acid ring with each of the bifurcated ends including radially extending annular lips, which are located along opposite side faces of the acid rings 15, 16 and 17. Thus, a feature of the present invention is a battery terminal wherein the cast battery terminals comprise a bifurcated acid ring 15 with a pressurized upper annular labig 15a and a lower annular lip molded under pressure. The end face of each of the acid rings is shown with an inner side surface or a beveled face 15c and the inner side surface or a beveled face 15b that are assembled at the root of the acid ring to form an annular groove 15e formed in V. Similarly, each of the bifurcated acid rings 16 and 17 have identical lips that form an apex or tip at the root of the lips and an annular groove formed in V at the periphery of the annular acid ring. In the embodiment shown in Figure 1 the lower acid ring 18 is provided with a scouring 18a which can be formed by means of an end mold (not shown) that works in conjunction with the side molds. That is, the end mold can be used to form the annular lip 18b which extends downwardly since the end mold can move axially away from the end of the mold when the battery part is released from the mold. Thus, a feature of the present invention is the ability to cast a battery terminal where after the casting process has been completed at least one of the acid rings contains a lip or projection 18b that can be used to seal the battery terminal to a battery container. Although a projection 18 can be cast with the current process of forming bifurcated acid rings one can choose not to cast a terminal with a projection and instead use only the bifurcated flared ends of the acid rings to maintain the sealing ratio between the container and the terminal. Figure 2 illustrates the battery terminal 10 located in a fluidized bed having particles 21 colliding on the outer surfaces or on the beveled end face of the acid rings 15, 16 and 17 of the battery terminal through the introduction of fluid with lower openings 22. The impact of the particles, which are preferably harder than the battery part, provides a double effect. The first effect is that the particles that collide the battery part can polish the outer surface of the battery part. The second effect is that it has been found that the collision of particles on the beveled surfaces of the end of the acid ring can cause the ring lips of acid rings to bend or flare outwards and create a sealing region or bevelled bead of similar sealing to an "O" ring on the side face of the acid rings. A) Yes, a feature of the present invention is that one eliminates the need to form a "hook-like" connection between the battery terminal and the battery pack or deform the entire acid ring in a dovetail. A reference to Figure 3 shows how the battery part 10 appears after being subjected to the impact by fluidized particles. To illustrate the folding or flare of the annular lip, reference should be made to the acid ring 15, which shows the lip 15a curved upwards and the lip 15b curved downwards. That is, the collision of particles on the beveled surface 15c and 15d occurs with sufficient force to flare the annular lips 15a and 15b outwardly in such a way as to create a sealing region on its back for sealingly coupling and anchoring a battery pack without the need to form a hook on the battery part. Since the angled surfaces 15c and 15d transmit a portion of the force in an axial direction, the lip can be flared or bent outwardly by radial collision of particles on the angled surfaces 15c and 15d. Because each of the bifurcated annular rings 16 and 17 has identical annular lips each of the bifurcated annular rings 16 and 17 produces a sealing region on the lateral face of the acid sealing rings for sealing engagement between the container and the terminal while laterally anchoring a battery pack with respect to the terminals without the use of a hook that could trap air therein during package formation and thereby produce regions with higher risk of electrolyte leakage. However, if the lips are flared out slightly to produce a sealing bead, trapped air can flow smoothly outward during the molding process and one does not need to worry about the air being trapped in a "hook" on the part. after the acid ring. Although the battery part has been placed in a fluidized bed to be able to direct particles against the bevelled side surface of the acid rings, other methods are allowed to collide particles against the surface such as in a centrifuge where the battery part is allowed and the harder means comes in contact with the battery part while the means and the battery part are centrifuged to deform the annular lips on the part of the cast battery. That is, in another flapping process the use of a deformable material such as lead or a lead alloy allows one to flare or bend the lips in the acid rings to the desired shape by contacting an article or particles with the angled lateral surfaces on axially spaced circumferential acid rings. Figure 4 shows a side elevational view of a different system and method for bending or flapping the annular lips in a container engaging projection or a sealing region in the terminal. In the embodiment shown, the battery terminal 30 contains annular acid rings 31 with a groove formed in V on the end face. A set of radially movable hammering or flare members 35 and 36 is placed close to the acid rings. In the embodiment shown the hammering member 35 includes the curved projections 35a, 35b and 35c, which are located in the same plane as the acid rings 31, 32 and 33. Similarly, the hammering member 36 includes the hammering projections 36a, 36b and 36c which are located in the same plane as the acid rings 31, 32 and 33. The radial displacement towards the inside of the member 35 and 36 brings the hammering projections into engagement with the grooves formed in V in each of them. the acid rings which causes the annular lips of the acid rings to bend outward or flare outwardly as illustrated in Figure 3 in such a way as to form a sealing region or a rigid sealing ring on the back of the acid ring. Figure 5 shows a bottom view of how a part radial multiple hammering member can hammer or compress the bifurcated acid rings so that each of the acid rings has a lip or projection for coupling a container. In the modality shown, a first arcuate hammering member 42 that is positioned radially through a hydraulic cylinder 43a includes a hammering surface 42b that is in alignment with the acid ring 40a. Similarly, placed around the terminal 40 are the hammering members 41 and 43 which cooperate to form a closed annular hammering member which engages and bends or flares the lips in the annular acid ring rearwardly in the latch or protrusion of the annular ring. container coupling illustrated in Figure 3 by radially inwardly moving the hammering members on the angled side surfaces of the annular lips in the acid ring. Thus, Figure 5 illustrates a method for forming sealing regions on the bifurcated acid rings by diing a member over the V-shaped grooves on the end faces of the bifurcated acid rings. Although the invention has been described with respect to the pressure molding of the battery terminal, it could also be formed from other casting methods or by cold forming. Figure 6 shows a preferred embodiment of the invention comprising a battery part 50 such as a battery terminal with a set of spaced bifurcated acid rings 51, 52 and 53. The bifurcated acid rings extend around the peripheral region of the battery part and can have any number of shapes including circular, hexagonal or similar. Although an acid ring may be sufficient for coupling with a battery pack, the battery part 50 generally includes at least three laterally spaced acid rings that extend radially outward from the base 55 of the battery part 50. The battery part 50 includes a connection shoulder 56 having an outer surface 56a to form an electrical connection for an external device. In the embodiment shown the battery terminal 50 includes a hollow central opening 57 to allow one to pour molten metal therein to form an electrical connection for the internal components of the battery such as a battery plate or the like. Figure 7A shows an isolated view of a portion of the bifurcated acid ring 51 to reveal in detail the lip 60 with a first face or side face 60a on one side and a second face, specifically, a beveled end face 60d on the other side of the face. lip 60 with side face 60a and beveled end face 60d forming an included angle of less than 90 degrees therebetween. Similarly, a second lip 61 includes a first face or side 61a on one side and a second face, specifically, a beveled end face 61d on the opposite side with the side face 61a and the beveled end face 6Id opposite forming a included angle of less than 90 degrees between them. In addition, the beveled end face 60d intersects the bevelled end face 61d at a tip 61e to form a valley or groove formed in V between the lip 60 on one side of the acid ring and the lip 61 on the opposite side of the acid ring 51. Figure 7B shows the acid rings 51, 52 and 53 in a partial view in Figure 7A with the lips in a flared condition to thereby form a sealing region or lateral sealing bead on the side faces of the acid rings for thereby improving the sealing of a battery pack to the terminal. The beveled surface 60d of the first lip 60 and the beveled surface 61d of the second lip 61 are located at approximately an angle of ninety degrees with respect to each other although the angle may vary depending on the selection of the angle of the beveled surface for each lip. In the embodiments shown, the lips 60 and 61, which were previously in a non-flared condition, (Figure 7A) and an apex or tip 60f and 61 have been transformed to a flared condition. The lip 60 has an extended flat surface 60c and the lip 61 has an extended flat surface 61c. Although Figure 7A illustrates the acid ring in the condition without flapping, Figure 7B shows the acid rings in a flared condition. In the flared condition, the lips on the bifurcated acid rings have been flared laterally to form a sealing region or a sealing bead along the lateral faces of the acid rings. Figure 7A shows the acid ring 51 in the condition after casting showing the lip 60 and the lip 61 in a straight condition or without flapping. In the embodiments shown, the bifurcated acid ring 51 has a first side face 60a and a second side face 61 located in a substantially parallel relationship with respect to each other. Figure 7B shows the bifurcated acid ring 51 in the flared condition. In the flared condition the bifurcated acid ring 51 includes a first circumferential end face 60c and a second circumferential end face 61c spaced apart by a first circumferential beveled face 60d of end and a second circumferential bevel face 61d of end. In the flared condition, a first sealing region or circumferential sealing cord 60b extends around the outer portion of the lateral face 60a and a second region of the sealing or circumferential cord 61b of the seal extends around the outer portion of the surface 61a lateral. As can be seen in Figure 7B the lip 60c located in the acid ring 51 and the lip 61 located in the acid ring 51 has been flared upwards to form the respective sealing regions 60b and 61b. The sealing regions have a lateral length denoted by x and extend partially along the side faces of the acid ring. Each of the sealing regions extends circumferentially around the battery terminal to provide a 360 degree sealing barrier between the container and the battery container.

To appreciate the transformation of the battery terminal with a bifurcated acid ring in a battery terminal with cantilever sealing regions, reference should be made to Figure 7 and Figure 8, which shows a clamping bushing 81 in the top view. Figure 8 shows a sectional view of the battery terminal 50 positioned between a set of grooves 71, 72, 73, 74 and 75 mounted in a cantilever on the clamping bushing 81. Figures 7-10 illustrate a battery terminal placed in the clamping sleeve 81 and the clamping sleeve collapses to radially compress the lips in the acid ring to form a sealing bead on the lateral surface of the cord. Figure 7 shows a top view of the battery terminal 50 positioned centrally between the grooves 71-77 that are held to cantilever in a base member (not shown). A compression clamping bushing 80 extends around each of the grooves so that when the clamping bushing is forced upward it carries the grooves radially inward to flare the lips on the acid rings 51, 52 and 53. Figure 8 shows a sectional view of the clamping bushing 81 surrounding the battery terminal 50 with the splines 71, 72, 73 and 74 in a condition spaced over the bifurcated acid rings 51, 52 and 53. If desired, a mandrel can be inserted. (not shown) in the battery terminal 50 to maintain the battery terminal in position. Figure 9 shows the initial step in the formation of the sealing regions in the bifurcated acid rings 51, 52 and 53. In this condition, the flutes 71-75 have been brought into contact with the lips in the bifurcated acid rings 51, 52 and 53 while the acid rings are free to self-center in the clamping bushing. Figure 10 shows a compression step where the grooves 71-75 have been pressed radially inward to flare the lips in the acid rings 51, 52 and 53 long enough to form a sealing bead on the lateral surface of each of the lips in the acid rings but insufficient to form the lips in a hook. That is the deformation, which is shown in greater detail in Figure 7B, which produces a sealing region or inclined sealing cord extending along a portion of the back of the flared lip of the acid ring. In the embodiment shown, the radius of curvature of the clamping bushing and the radius of curvature of the acid rings is substantially equal to produce a uniform flare of the lip. Figure 11 shows the terminal 50 after compression by the clamping bushing 81. As can be seen in figure 11 each of the lips in the acid rings 51, 52 and 53 have been flared to create the sealing regions illustrated in Figure 7B. In contrast to the deformation of the acid rings with rectangular shape as shown in the state of the art the compression of the bifurcated acid ring involves only a slight deviation of the lips to create the sealing bead which minimizes the tension lines which can be caused by the coupling between a cold forming portion on a pressurized molding battery terminal. Figure 12 is a side view of an alternate embodiment of a battery part 80 in which the acid rings 81, 82 and 83 are formed with a single lip on each acid ring. That is, the acid ring 81 has a side surface 81a and a beveled surface 81b that forms an angle of less than 90 degrees and preferably 45 degrees or less to form a lip that can be flared upwardly enough to form a sealing bead on the side surface 81. In this embodiment, radial compression with the clamping sleeve will form an upper bevelled sealing region on each lip to laterally anchor the container and simultaneously form an effective seal that inhibits the loss of electrolyte beyond thereon.

Figure 13 shows a clamping bushing 90 having a base with the cantilever sections 90b, 90a and 90c. Located on an inner face of the sections of clamping sleeve in cantiliver are a set of annular edges 91, 91a and 91b. An annular ridge 91 is adjacent to the cavity 92 just as the other edges 91 a and 91 b are also close to a cavity. In the embodiment shown, the clamping sleeve forms an angle 0 with a line parallel to a central axis of the clamping sleeve. The purpose of the angle in the face of the clamping sleeve is to allow one to form the acid rings in a battery terminal having a tapered base. The spacing of each of the edges in the clamping bushing 90 is such that the edges align with the cavity formed in V in the bifurcated acid ring as illustrated in FIG. 4. FIG. 14 shows a partial sectional view. a battery terminal 95 wherein the clamping bushing 90 of Figure 13 has been used to compress the bifurcated acid rings 96, 97 and 98. Each of the bifurcated acid rings has been radially compressed to deform the acid rings to produce a drop-shaped cavity 99 between adjacent acid rings wherein the lower part of the cavity has a width x2 which is larger than the width xx of the region of entry to the cavity to thereby form a retaining pocket for reception of molten material used to form the container around the battery terminal. As shown in FIG. 14, the bifurcated acid ring 96 has an upper curved face 96c and a lower curved face 96d on the opposite side of the undeformed portion 96f of the bifurcated acid ring 96 as a result of the acid ring which has deformed radially towards inside by the clamping bushing 90. When each of the acid rings is subjected to tightening by the clamping bushing 90, the compression produces a smoothly curved surface 96a on the upper side of the acid ring 96 and a gently curved surface 97b in the lower side of the acid ring 97 which works together to form a drop-shaped cavity 99 to lock a battery pack there. Similarly, the acid ring 98 has been deformed and the lower curved surface 97b works in conjunction with the upper curved surface 96a to form an additional drop-shaped bag between them that can trap the molten plastic therein and help form a leak proof seal. As can be seen in Figure 14, each of the acid rings converges from an outer portion of the acid ring to an inner portion of the acid ring. For example, the surface 96c and 96b of the acid ring 96 are gently bent from the outermost portion or region of entry into the cavity toward the innermost point or the bottom of the cavity. Although the invention has been shown with circular battery terminals, the invention can also be used with battery terminals that are different from circular ones such as oblong ones. In those applications a multi-part die can be used in comparison with a clamping sleeve to deform the bifurcated acid rings in a condition where a retention pocket is formed between them.

Claims (29)

1. A press-molded battery terminal comprising: a connection shoulder; a base, the base has a plurality of bifurcated acid rings; a central axis that extends through the base; And each of the bifurcated acid rings has a first lip and a second lip, each of the first lip and the second lip has a beveled side surface which converges between them to form a groove in the middle so that the radial impact of a force on the beveled side surfaces causes the flare of the lips to form a sealing region on a side face of each of the lips.

2. The snap-molded battery terminal according to claim 1, characterized in that the lateral surface of the first lip and the lateral surface of the second lip form a V-shaped groove.

3. The molded-in battery terminal in compliance with with claim 1, characterized in that the first lip and the second lip comprise annular lips that extend around the periphery of the acid rings. The press-molded battery terminal according to claim 1, characterized in that at least one of the acid rings is cast with a scour in it to provide a projection for coupling a container. The snap-molded battery terminal according to claim 2, characterized in that the beveled surface of the first lip and the bevelled surface of the second lip are located at approximately a ninety-degree angle to each other. 6. The method for making a battery part comprising: casting a battery part with an acid ring, with the acid ring having at least one lip having a side surface and a beveled surface forming an acute angle with the side surface . The method for making a battery piece according to claim 6, which includes the of casting a battery terminal with a plurality of annular acid rings each having an annular lip separated by a groove located therebetween; and placing the battery terminal with the set of annular acid rings each having an annular lip, between particles that randomly collide on the lateral surfaces of the acid rings to flare the lips of the acid rings to thereby form a projection for coupling a container. 8. The method of compliance with the claim 6, characterized in that the battery terminal is placed in a fluidized bed with particles having a hardness greater than the hardness of the battery terminal. 9. The method for making a battery terminal comprising the s of: forming a plurality of acid rings each having a lip formed by a first side surface and a second surface with the first side surface and the second surface having an included angle less than 90 degrees. The method according to claim 9, characterized in that the method for making the battery terminal comprises casting the battery terminal in a mold. 11. The method according to the claim 9, which includes impacting the second surface to flare the lip over the acid ring to form a sealing region on the lateral surface of the lip. The method for making a battery terminal according to claim 9, which includes the formation of a second lip in the acid ring with the second lip having a first side surface and a second surface, with the first side surface and the second surface of the second lip having an included angle less than 90 degrees. The method according to claim 9, which includes the manufacture of the battery terminal of a lead alloy. The method according to claim 9, which includes the impact of the second surfaces radially striking the second surface to flare the lip to form a sealing bead on the lateral surface of the lip. 15. The method according to claim 9, characterized in that the battery terminal is placed in a hopper containing free particles to randomly collide on the second surface to thereby flare the lip. 16. The method according to claim 9, characterized in that the second surface is hit with a radially running hammering member to thereby flare the lip to form a sealing bead on the side surface for coupling a battery pack. The method according to claim 12, characterized in that the second surface of the first lip and the second surface of the second lip are formed in a V-shaped groove. 18. The method according to claim 17, characterized in that it includes the formation of at least three acid rings with each acid ring having at least two circumferential lips. 19. The method of press-molding a battery terminal by the flow of molten metal into a cavity formed by radially movable side mold members and axially displaceable mold end members. 20. The method of compliance with the claim 9, which includes the step of applying a radially compressive force sufficient to flare the lip and form a bead of sealing on it, but insufficient to bend the lip on a hook. 21. The method according to the claim 10, characterized in that the battery terminal is placed in a clamping bushing having a radius of curvature substantially the same as the radius of curvature of the acid ring and the clamping bushing collapses radially to compress the lip to form a sealing bead in the lateral surface of the lip. 22. A part of lead or lead alloy battery that has: an acid ring; a lip located in the acid ring; a side face on the acid ring; an angled end face on the acid ring with the angled end face having a tip region adjacent to the side face so that a force on the angled end face flares the lip to form a pack sealing bead on the face side of the acid ring. 23. The battery part according to claim 22, characterized in that the battery part comprises a battery terminal. 2

4. The battery part according to claim 22, characterized in that the battery part includes a plurality of lips. 2

5. The battery part according to claim 22, characterized in that the battery part includes another angled end face with the other rear angled end face working in conjunction with the angled end face to form a valley on the face of the battery. end of the acid ring. 2

6. The battery part according to claim 22, characterized in that the acid ring has a circular shape. 2

7. The battery part according to claim 22, characterized in that the lip in a non-flared condition has a tip and wherein in a flared condition the lip has an extended surface. 2

8. The battery part according to claim 22, characterized in that in the flared condition the adjacent acid rings form a drop-shaped cavity between them. 2

9. The battery part according to claim 22, characterized in that each of the acid rings converges from an outer portion of the acid ring to an inner portion of the acid ring.