KR101155583B1 - A battery terminal system and manufacturing method thereof - Google Patents

Abstract

The present invention shortens the molding time by casting the terminal by increasing the height of the bushing upper part and the seating part of the bushing, stably fixes the mold, prevents deterioration of the case, and blocks leakage until the end of the battery life. The present invention relates to a terminal system and a method for manufacturing the same. In particular, in a battery terminal system including a pole, a bushing, a terminal, and a case, the bushing has an annular shape in an upper portion of a bushing forming a through-hole in the center and a lower outer periphery of the upper portion of the bushing. Formed in the lower part of the upper part of the bushing and having a width ranging from the outer periphery to the end of the annular end with a value ranging from 80% to 120% of the total height value from the lower end to the upper end of the bushing; It is formed to include a bushing lower portion having one or more fixing portions formed in an annular shape at the bottom of the coupling portion to extend It prevents the heat emitted from the terminal lead solution in the molten state to be transferred to the case, so that the coupling force between the bushing and the case is maintained so that the electrolyte is not leaked and the height of the bushing is optimally increased, thus improving the casting molding time of the terminal. It reduces the defect rate of terminal molding and cuts off the welding heat applied from the torch during the surface treatment by post-processing of the completed terminal because it reduces the productivity by shortening, increasing productivity, and increasing the width of the seat. It protects against softening and deterioration, improves the bonding force with the case by forming one or more coupling parts, blocks the occurrence of leakage by forming the blocking grooves and chamfers, and protrudes the seating part to make the distinction between the case and the terminal clear. .

Description

Battery terminal system and manufacturing method thereof

The present invention relates to a terminal system for inputting and outputting current from a vehicle battery, and more particularly, to increase the height of the upper part of the bushing and the width of the seating part of the terminal bushing, thereby shortening the molding time by casting the terminal and stably seating the mold. The present invention relates to a battery terminal system and a method of manufacturing the same, which prevent softening and block leakage from the end of battery life.

The battery supplies the charged current by discharging and discharges until the internal voltage reaches the set minimum voltage as the discharge proceeds, and a voltage drop occurs inside the discharge. It is called a secondary battery or a storage battery (hereinafter, referred to as a battery) because the process of recharging again before the minimum voltage is reached and supplying current by discharging is repeated for an allowed number of times.

Batteries are classified into various types by materials used as positive and negative electrodes and electrolytes, and lead batteries using lead and sulfuric acid are the most common.

Lead batteries largely comprise a positive electrode, a positive pole, a negative plate, a negative pole, a separator, a case, a positive electrode and a negative terminal, and an electrolyte.

The positive electrode plate is made by applying paste made of lead dioxide and dilute sulfuric acid to the lead plate, forming it into a plate shape and drying it. It is an aggregate of crystalline fine particles and porous, so it has good diffusion penetration of electrolyte solution but weak binding power. The performance continues to deteriorate as it moves away from the plate.

Anode poles are physically connected and electrically connected to a plurality of anode plates using a casting mold. The anode poles are made of the same material as the anode plate, become anodes of input / output terminals, and become thick in proportion to the capacity of the maximum output current.

The negative electrode plate is made of spongy lead which is made by kneading lead powder with dilute sulfuric acid on the lead plate, molded into a plate shape, and dried to make it porous and chemically reacting. Gradually lost, the capacity continues to fall.

Since the positive electrode plate has higher chemical activity than the negative plate, it is common to configure one more negative plate in the unit of cell outputting unit voltage than the positive plate to maintain chemical equilibrium.

Cathode poles are electrically connected by connecting a plurality of negative plates physically, and made of the same material as the negative plate, and become negative poles of the input / output terminals, and become thick in proportion to the capacity of the maximum output current.

The separator shall be non-conductor about 2 mm thick and be placed between the positive and negative plates to have a mechanical strength to prevent short circuits.

In order to prevent the fallout (or corrosion) of lead peroxide and to spread the electrolyte well, the separator is provided with the grooved side facing the anode plate, and it is non-conductive, has good diffusion of electrolyte, and emits a bad substance on the electrode plate. For the diffusion of the electrolyte solution is not porous and corrosion-resistant material, for example, reinforcing fibers, porous rubber, synthetic fibers, synthetic resins, glass fiber mats and the like can be used.

The case is made of synthetic resin or ebonite, has a high impact and acid resistance, and is provided with a plurality of negative electrode plates, positive electrode plates, and separator plates, each of which is divided into one cell unit including an electrolyte, and composed of a plurality of cells.

Terminals are called terminals or posts (hereinafter referred to as 'terminals') and have negative (-) terminals formed on the cathode poles and positive (+) terminals formed on the anode poles. It is usually made of lead.

The terminals of large lead-acid batteries with high capacities are molded on the poles by either casting or cold forging.

The terminals of the vehicle battery make up the terminal system, including poles, bushings, terminals and cases.

A prior art related to the bushing of the terminal system is a 'battery terminal' according to Korean Patent Registration No. 10-0879532 (2009. 01. 13.).

1 is a diagram illustrating a configuration of a bushing of a vehicle battery according to an embodiment of the prior art.

Hereinafter, with reference to the accompanying drawings, the bushing (C) according to the prior art forms a hollow 11 penetrated in the inner center, and consists of a body 10, a projection.

Protruding portion is formed in an annular protruding to be coupled to the case of the battery by insert injection, and includes a bottom bar protrusion 20 and the torque resistance projection (30).

The bottom bar protrusion 20 prevents leakage of the electrolyte while increasing the bonding force with the battery case.

Torque resistance protrusion 30 forms a plurality of irregularities to strongly resist the rotational force applied to the terminal from the outside.

However, since the vehicle terminal must maintain the height of 17 mm according to the standard prescribed in KS C 8504 standard, the molding is added to the bushing (C) to complete the terminal.

There are two methods of completing the terminal by forming the terminal: cold forging and casting.

If the terminal is formed by cold forging, the thickness of the additionally formed part around the bushing (c) may become thin and cracks may occur. In particular, in the case of a large capacity battery, the diameter of the additional part is increased because the diameter of the bushing is larger. The thinner and weaker the bonding force is a high defect rate and there is a problem that the productivity is lowered.

In order to solve some of the problems in the cold forging method, the casting method may be used. In this case, the coupling force between the bushing and the case is weakened by the heat generated from the molten lead solution, and a fine gap is formed by the weak coupling force. There is a problem that the electrolyte of the battery leaks to the outside.

In addition, when the strength of heat generated in the process of forming the terminal is large, there is a problem of reducing the life by softening or deteriorating the battery case.

Therefore, in forming a terminal of a vehicle battery by a casting method, it is necessary to develop a technique for increasing the coupling force between the bushing and the case, blocking the leakage of electrolyte, and in particular, the heat generated during the molding process is not transferred to the case.

The present invention is to solve the problems and necessity according to the prior art in forming a terminal in a casting method in the insert injection bushing, the battery terminal to block the heat of the molten terminal metal solution from being transferred to the case during the casting process It is an object to provide a system and a method of manufacturing the same.

It is also an object of the present invention to provide a battery terminal system and a method of manufacturing the same which shorten the molding time of the battery terminal to increase productivity.

On the other hand, it is an object of the present invention to provide a battery terminal system and a method of manufacturing the same to increase the productivity by reducing the molding failure rate of the terminal by safely seating the mold for casting the terminal of the battery.

The present invention also provides a battery terminal system and a method of manufacturing the same, which block the welding heat of the torch from being transferred to the case during the surface treatment since the terminal of the battery after casting is completed by heat using a torch. to be.

Another object of the present invention is to provide a battery terminal system and a method of manufacturing the same, which increase the coupling force between the terminal and the case, thereby preventing rotation or leakage of electrolyte due to external force.

In order to achieve the above object, the present invention provides a battery terminal system including a pole, a bushing, a terminal, and a casing. The bushing includes: an upper portion of a bushing forming a through hole in a center thereof; A seat formed in an annular shape and having a width ranging from 80% to 120% of the total height value from the outer periphery of the lower end of the upper bushing to the outer periphery of the upper end of the upper bushing as the width value from the outer periphery to the annular end. And a bushing lower portion provided at a lower end of the seating portion, extending through-holes in the upper portion of the bushing, and a bushing lower portion having at least one fixing portion formed in an annular shape at the lower end of the coupling portion.

Preferably, the lower portion of the bushing protrudes in an annular shape, but the annular diameter is smaller than the diameter of the seating portion, and further includes one or more joining portions having a plurality of irregularities formed on the outer circumference thereof.

And one or more coupling portion is provided with a blocking groove for blocking the leakage of the battery electrolyte therebetween.

Here, the case is formed by insert injection below the lower end of the seating portion to form the stepped portion by causing the seating portion to protrude upward from the top surface of the case.

In addition, the height of the upper bushing is a value in the range of 50 to 60% of the total height of the terminal formed on the seating portion.

On the other hand, the bushing is made of a configuration to form a chamfer on one open end of the through-hole.

In order to achieve the above object, the present invention provides a terminal system of a battery including a pole, a bushing, a terminal, a case, and a seating portion lower portion and a bushing lower portion, a coupling portion, a blocking groove, a fixing portion, Inserting the chamfer to insert the battery into the case, inserting the pole of the battery into the through hole formed in the center of the bushing, and seating the casting mold on the top of the seating portion of the bushing into which the pole is inserted. The present invention provides a method for manufacturing a battery terminal system, comprising: forming a terminal by injecting an alloy lead solution into an outer circumferential edge and an upper end surface thereof, and post-processing the outer circumferential edge of the terminal from which the casting mold is removed with a torch.

Preferably, the step of injecting inserts extending in a straight line so that the chamfer is embedded in the through-hole formed in the inner center of the lower part of the bushing, and the step of post-processing melts the surface of the formed terminal with torch heat to surface-treat.

The present invention having the configuration as described above forms a fixed jaw of a predetermined width and thickness in the bushing to block the heat dissipated from the terminal lead solution in the molten state to prevent the transfer to the case to maintain the coupling force between the bushing and the case of electrolyte leakage There is no industrial use effect.

In addition, the present invention of the configuration as described above has an effect that is convenient in use to shorten the casting molding time of the terminal and increase the productivity because the height of the bushing is optimally increased.

On the other hand, the present invention of the configuration as described above has a convenient effect in reducing the failure rate of the terminal molding because the seating portion of the bushing to securely seat the casting molding die.

In addition, the present invention has the industrial use effect of protecting the case from softening and deterioration by blocking the welding heat applied from the torch during the surface treatment process by the post-processing of the completed terminal by increasing the width of the seating portion of the bushing. There is.

Above all, the present invention of the above configuration forms one or more coupling parts in the bushing to increase the coupling force with the case, forming a blocking groove and a chamfer to block the occurrence of leakage of liquid, and protruding the seating portion to clearly distinguish between the case and the terminal. There is a convenient effect to use.

1 is a configuration diagram showing a bushing of a vehicle battery according to an embodiment of the prior art;
2 is a front view and a plan view of a bushing according to an embodiment of the present invention;
3 is a state diagram showing a pole in a state in which the bushing of the large capacity battery is inserted into the case according to an embodiment of the present invention,
4 is a state diagram of casting a terminal by using a mold in a bushing provided with poles according to one embodiment of the present invention;
And
5 is a state diagram of post-processing with a torch for surface treatment of a terminal system in which molding is completed according to an embodiment of the present invention.

It is to be understood that the words or words used in the present specification and claims are not to be construed in a conventional or dictionary sense and that the inventor can properly define the concept of a term in order to describe its invention in the best possible way And should be construed in light of the meanings and concepts consistent with the technical idea of the present invention. Detailed descriptions and drawings of well-known functions and configurations that are determined to unnecessarily obscure the subject matter of the present invention will be omitted.

Insert injection is a method of injecting other objects together in a state of injection into the injection mold using synthetic resins as raw materials.

Bushing is used to represent a tube for wiring in electricity and is used as a kind of bearing in the machine. In the present invention, the pole of the battery is inserted and the base of the battery terminal is called a bushing.

Batteries are called secondary batteries because they can be reused repeatedly. For example, lead (PbO2-Pb) and nickel hydrogen (Ni-MH) may be used depending on the electrolyte and the materials used as the positive and negative electrodes. ), Nickel cadmium (Ni-Cd), lithium ion (LIB), lithium polymer (LPB), lithium ion polymer (LIPB), nickel iron (NiOOH-Fe), nickel zinc (NiOOH-Zn), silver oxide-zinc oxide (AgO) -Zn), silver oxide-cadnium (AgO-Cd), sodium-sulfur, sodium-metal chloride (FeCl2-Na), zinc-chlorine (Br2-Zn), zinc-bromine (Be2-Zn), aluminum-air (O2 -Al), nickel-hydrogen (NiOOH-H2), lithium secondary (polymer-Li) batteries and the like.

The high-capacity classification criteria for batteries include capacities above 120AH / 20HR that can carry 6 amperes (A) per hour for 20 hours (HR).

According to the Korean Standard for Vehicle Battery, which KS C 8504 sets in Korea Technical Standards Institute, the large capacity positive terminal is 17.5 +-0.3 mm in height, the outer diameter is 19.5 mm in length, and the taper indicating slope is 1/9 + -0.01 The range must be satisfied.

In the case of the negative terminal, the height is 16.0 +-0.3 mm, the lower outer diameter is 17.9 mm, and the taper is standardized as 1/9 +-0.01.

In the following description, the positive terminal will be described.

The pole is a positive (+) pole and a negative (-) pole, and the positive pole is an electrical connection by physically connecting a plurality of positive plates embedded in the battery, and the negative pole is electrically connected by physically connecting a plurality of negative plates. You are connected.

As the capacity of the battery increases, the pole connected to the cathode and anode plates should be thicker in proportion to the current flowing.When forming terminals according to standard specifications, the thickness of the terminal padd on the pole becomes thinner, so the finished terminal is easy. There is a problem that is broken.

It is common to use alloy lead as the terminal of the battery, and the melting temperature of pure lead is 327 degrees Celsius, and the melting temperature of alloy lead is around 450 degrees Celsius.

The alloy lead is classified as soft lead, which is melted at the following temperature based on the melting temperature of 450 degrees, and soft lead is melted at the above temperature.

The battery case is generally made of polypropylene (PP) of a synthetic resin type and the melting temperature of the polypropylene is melted in the range of 160 to 290 degrees Celsius, depending on the mixed material.

2 is a front view and a plan view of a bushing according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, the bushing 1000 is the upper bushing 110, the seating portion 120, the coupling portion 130, 135, blocking groove 140, the lower bushing 150, high This configuration includes the governments 160 and 165.

The terminal system of the battery includes a pole and a bushing 1000 and a terminal and a case, and the bushing 1000 is inserted into the case by insert injection and thus is coupled and fixed.

The upper bushing 110 has a height corresponding to a value in the range of 50% to 60% of 17 mm, which is a high-capacity terminal height defined in the KS C 8504 standard, and has a through hole 115 penetrated in a straight line inside the center. It is cylindrical.

Here, the height of the bushing upper portion 110 is 10 mm, and the thickness thereof is preferably variable to suit the diameter of the circumference inserted into the through hole 115.

Forming the height of the bushing upper portion 110 to 10 mm may be formed by injecting only about 7 mm of alloy lead solution in order to form the terminal 6000 to a height of 17 mm according to the KS C 8504 standard. It has the advantage of shortening time and increasing productivity.

At this time, if the height of the bushing upper portion 110 is too high, the capacity of the alloy lead solution to be injected to form the terminal 6000 is reduced, the productivity is increased.

However, the welding of the molded terminal 6000 and the bushing upper part 110 and the pole column 3000 is not made well, so that the incidence of defects separated from each other increases, thus the productivity decreases.

When the height of the upper bushing 110 is formed in a range of 50% to 60% of the total height of the terminal 6000, it was confirmed that fusion with the molten alloy lead solution is performed well.

Here, the pole column 3000 will be described as being formed to the end of the upper bushing 110.

According to the experiment, the upper part of the bushing 110 including the pole is made 10 mm high among the total height of 17 mm, and even when the remaining part is injected into the molten alloy lead solution, the welding is well performed and the defect occurrence rate in the molded state is high. And it was confirmed that the terminal did not disconnect during use.

The seating part 120 is attached to the outer periphery of the bushing upper part 110 in a donut-shaped annular shape.

A value in the range of 80% to 120% in the height value from the lower end to the upper end of the bushing upper portion 110 is set to the width value of the annular portion of the seating portion 120 protruding from the outer periphery of the bushing upper portion 110.

Preferably, the height value of the upper bushing portion 110 is a width value.

The bushing upper part 110 is a part which becomes the base of the terminal 6000 which casts and molds using a casting die or a welding die (hereinafter, referred to as a “mold”) and injecting molten alloy lead.

That is, since the terminal is cast by welding on the upper side of the upper bushing upper portion 110, which is the foundation, it is molded to be joined together.

According to KS C 8504 standard, the terminal should have a diameter of 6.2 mm at the lower diameter and a circumference of 19.5 mm at the outer diameter, and form a 1/9 taper.

Therefore, the mold surrounding the outer periphery of the bushing upper portion 110 is placed in the seating portion 120 and the molten alloy lead is injected into the mold so as to have a height determined by the KS C 8504 standard, and then cooled to complete molding of the terminal.

In this case, in order to facilitate the settlement of the mold and to prevent the heat of the molten alloy lead from being transferred to the synthetic resin forming the case, the seating portion 120 has an annular shape such as a donut shape, the width of which is as wide as possible, and the thickness of which is as thick as possible. It is preferable.

However, if the value of the width and thickness of the seating portion 120 is too large, it is inefficient and rather, the failure rate increases and productivity is lowered.

In the present invention, the value of the range 80% to 120% of the height value of the bushing upper portion 110 is the width value of the seating portion, and the average thickness of the bushing upper portion 110 is the average thickness of the seating portion 120.

It was confirmed that it is preferable to determine the height value of the upper bushing 110 as the width value of the seating part 120.

In addition, the seating portion 120 has the advantage of protecting the case made of synthetic resin safe from deterioration because it blocks the flame of the torch to surface treatment the terminal by post-processing in the state in which the casting molding of the terminal is completed.

In addition, when the insert 120 inserts into the case of the battery by the injection mold, the mounting portion 120 prevents the bushing 1000 from being deformed by the pressure applied from the injection mold, and forms a step portion for separating the terminal from the case.

The coupling parts 130 and 135 include the first coupling part 130 and the second coupling part 135 and are provided to be adjacent to the bottom of the seating part 120 and include a plurality of recesses and convex parts.

Here, the convex portions of the coupling portions 130 and 135 form the protrusions 131, and the recessed portions form the groove portions 132 to be embedded in the case made of synthetic resin and are fixed in a state of increasing the bonding force.

Therefore, even when the bushing 1000 is firmly coupled to the case and a rotating external force is applied, the bushing 1000 is firmly maintained without being rotated.

In the description of the present invention, the first and second coupling units 130 and 135 have been described as constituting the third or fourth coupling unit.

The blocking groove 140 is formed between the first and second coupling parts 130 and 135 to block the electrolyte solution of the battery from leaking out of the gap or from introducing foreign matter solution from the outside.

That is, since the coupling parts 130 and 135 are for increasing resistance to external rotational force applied to the bushing 1000, the coupling parts 130 and 135 are formed to be larger than the diameter of the completed terminal and smaller than the diameter of the seating part 120. desirable.

In addition, the first coupling portion 130 and the second coupling portion 135 are formed in an adjacent state and forming a blocking groove 140 therebetween so that the electrolyte inside the leakage (leakage) to the outside or liquid, gas from the outside It is desirable to make it suitable to block the inflow of the back.

The lower bushing 150 is provided at the lower end of the upper bushing 110 and has a through hole 115 extending in a straight line at an inner center thereof.

At this time, the chamfer 155 is formed at the end of the through hole 115 of the lower bushing 150, and the chamfer 155 is preferably formed with 1/8 taper.

The chamfer 155 blocks the solution or gas by the electrolyte from leaking to the outside until the battery life is reached.

Here, the first and second coupling parts 130 and 135 are formed between the upper bushing 110 and the lower bushing 150.

The fixing parts 160 and 165 are formed in an annular shape on the outer circumference of the lower bushing 150, and include a first fixing part 160 and a second fixing part 165. Alternatively, the fourth fixing unit may be further configured.

The fixing parts 160 and 165 are to prevent the bushing 1000 from being separated from the case in which the bushing 1000 is infiltrated by an external force.

3 is a state diagram showing a pole in the bushing of the large-capacity battery is inserted into the case according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, there is shown a state in which the insert injection molding the bushing 1000, which is used as an electrode in the case 2000 of the battery made of a synthetic resin in the embedded state.

The stepped part 210 is formed at the lower end of the seating part 120 of the bushing 1000 by injection.

The stepped part 210 distinguishes the terminal from the case 2000 and prevents foreign substances made of liquid from flowing into the battery.

The pole column 3000 connects a plurality of pole plates 310, and is formed to have a length reaching from the lower end of the through hole 115 where the chamfer 155 of the bushing 1000 is formed to reach the end of the upper end. desirable.

Here, the synthetic resin constituting the case 2000 is injected such that the through-hole 115 of the bushing 1000 extends in a straight line, so that the chamfered portion 155 having a 1/8 taper is formed on the injection of the case 2000. It is in a state of being included.

The chamfer 155 has an advantage of extending the life of the battery because it blocks the electrolyte from leaking to the outside until the end of the life of the battery.

4 is a state diagram for casting a terminal by using a mold in a bushing provided with poles according to one embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, the mold 4000 is mounted on the seating portion 120 of the bushing 1000 provided with the pole column 3000 and the alloy lead solution 5000 is injected into the terminal 6000. Cast into shape.

In the case of the bushing 1000, the pole column 3000, and the injecting lead solution 5000 used in the vehicle battery, all alloys are used, so it is common to maintain a range of 450 degrees Celsius in the molten state.

The heat generated from the alloy lead solution 5000 is contacted with each other in contact with the corresponding surfaces of the bushing 1000 and the pole 3000 and melted in contact with each other, thereby cooling the welded state. Molding is complete.

In this case, when the heat including the alloy lead solution 5000 is cooled before being transferred to the case, the case is softened and weakened, so that the coupling state between the bushing and the case may be loosened.

In this case, the seating unit 120 may protect, delay, or attenuate heat transfer, and in order to form a constant width and thickness for this purpose, however, if the width is too wide and thick, Since it is inefficient and raises the defective rate, it is desirable to select an optimal value.

In the present invention, the width value of the annular seating portion 120 is determined from the outer periphery of the bushing upper portion 110 to a value in the range of 80% to 120% from the height value of the bushing upper portion 110, and preferably the bushing upper portion ( It is formed equal to the height value of 110).

In addition, the thickness of the seating portion 120 is preferably formed to be equal to the average thickness value of the bushing upper portion (110).

Therefore, there is an advantage in that the heat of the alloy lead solution 5000 is not transmitted to the case 2000 by the seating part 120, thereby maintaining a firmly coupled state between the bushing 1000 and the case 2000.

In addition, the gap formed by the stepped portion 210 has an advantage of further delaying or attenuating heat transfer of the lead solution 5000.

5 is a state diagram of post-processing with a torch for surface treatment of a terminal system in which molding is completed according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, the surface of the terminal 6000 is cast and cooled to be welded to the bushing 1000 and the pole 3000 by using a lead solution and the molding is completed, the surface of the mold precisely treated ( Even when 4000) is used, some surfaces of the molded terminals may be rough.

In particular, the upper end of the terminal 6000 is completed may be uneven surface shape due to the environment, such as the temperature of the lead solution 5000, the ambient temperature, the injection speed, etc. The gap between the sides according to the state of the mold 4000 In such a gap, the lead solution 5000 may leak, and a partly sharp or raised portion may be molded in a cooled state.

A torch 7000 using gas as a fuel is used to finish the surface of the terminal 6000 to smoothly process the surface in a natural state, and the entire terminal made of alloy lead by the heat of welding spark generated from the torch 7000. As the surface is slightly melted and cooled again, the terminal system 8000 which is surface-treated with a natural appearance by post processing is finally completed.

The heat of the welding spark generated from the torch 7000 is transmitted to the case 2000 around the terminal 6000 and partially deteriorates or softens the case 2000, thereby weakening the coupling force between the case 2000 and the terminal 6000. It may cause leakage.

In this case, the terminal 6000 is used to mean the bushing 1000 and the pole column 3000.

At this time, the seating part 120 blocks, delays, and attenuates the transmission of welding heat generated from the torch 7000, so that the case 2000 is not softened or deteriorated.

In addition, the gap formed by the stepped portion 210 has an advantage of further delaying or attenuating transmission of welding heat of the torch 7000.

Therefore, in the present invention, the heat generated from the lead solution 5000 injected for the welding of the bushing 1000 and the pole column 3000 and the weld heat generated from the torch 7000 during the surface treatment of the terminal 6000 are processed. Since the case 2000 is transmitted to the case 2000 in a delayed and attenuated state by the seating part 120, the case 2000 is not softened or degraded, and the coupling force between the terminal 6000 and the case 2000 is not weakened.

In addition, since the mold 4000 is stably seated by a sufficient width of the seating part 120, there is an advantage of facilitating molding of the terminal 6000 by casting.

Hereinafter, a method of manufacturing a battery terminal system according to an embodiment of the present invention will be described in detail with reference to FIGS. 2 to 5, and the bushing provided by the present invention is embedded in a case made of synthetic resin using an injection mold. Insert injection in the state (a).

The through-hole is formed at the center of the bushing formed by insert injection into the case, and the recessed part includes at least one coupling part, a blocking groove, a lower part of the bushing, at least one fixing part, and a chamfering part. The extended state is maintained.

Since one or more coupling parts are inserted into the case, the insert is injected, so the coupling force is increased to withstand external rotational forces, so that the electrolyte solution does not leak out or foreign substance solution is introduced by the blocking groove, and the bushing is connected to the case by one or more fixing parts. There is an advantage of maintaining a firmly coupled state without being separated from.

In particular, since the chamfered part is injected into the case, the electrolyte inside does not leak to the outside until the life of the battery is reached.

Insert poles for electrically connecting a plurality of pole plates to the through-holes of the bushing (b).

The pole may have a positive pole and a negative pole. The pole may be made of the same material as that of the pole plate, have a circular bar shape, and vary in thickness depending on the current input and output. In other words, the larger the current, the thicker the thickness.

The casting mold is placed on the seating part of the bushing where the pole is inserted into the through hole, and the lead solution composed of alloy is injected into the outer periphery and the upper surface of the upper part of the bushing by casting. This is completed (c).

The mold is removed when cooling of the terminal is completed. In general, the mold may have a small gap. In particular, if the mold is used for a long time, the gap becomes larger, and even when the surface of the mold is smooth, it is generally roughened by repeated use. .

Therefore, the outer circumferential surface of the terminal where the molding is completed may have a partly sharp or protruding portion and minute unevenness.

The outer periphery and top of the molded terminal is post-processed using welding heat of sparks generated from a torch using gas as fuel, so that the surface is cleanly treated (d).

Therefore, the terminal system 8000 of the vehicle battery according to the present invention is finally completed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art.

110: upper bushing 115: through hole
120: mounting portion 130: first coupling portion
135: second coupling portion 140: blocking groove
150: lower bushing 155: chamfer
160: First Government 165: Second Government
210: step portion 310: electrode plate
1000: bushing 2000: case
3000: Pole 4000: Mold
5000: Lead Solution 6000: Terminal
7000: Torch 8000: Terminal System

Claims (8)

In a terminal system of a battery including a pole, a bushing, a terminal, a case,
The bushing is,
A bushing upper portion forming a through hole in the center;
It is formed in an annular shape on the lower outer periphery of the upper part of the bushing and has a value ranging from 80% to 120% in the total height value from the outer periphery of the lower end of the upper part of the bushing to the outer periphery of the upper end of the upper part of the bushing. A seating portion having a width value to an end;
A coupling part protruding in an annular shape at the bottom of the seating part; and
A bushing lower portion extending from the upper portion of the bushing and having at least one fixing portion formed in an annular shape at a lower end of the coupling portion; Battery terminal system comprising a.
The method of claim 1,
The coupling portion
A battery terminal system, characterized in that protruding annularly in the lower portion of the bushing but having an annular diameter smaller than the diameter of the seating portion and forming a plurality of irregularities on the outer circumference thereof.
The method of claim 2,
The one or more coupling portion is a blocking groove for blocking the leakage of the battery electrolyte therebetween; Battery terminal system, characterized in that consisting of.
The method of claim 1, wherein the case,
And inserting the lower end of the seating portion or less so that the seating portion protrudes upward from the top surface of the case to form a stepped portion.
The method of claim 1,
The height of the upper bushing is a battery terminal system, characterized in that consisting of a value in the range of 50% to 60% of the total height of the terminal formed on the seating portion.
The method of claim 2, wherein the bushing lower portion,
Battery terminal system, characterized in that formed in the configuration to form a chamfer on one open end of the through-hole.
In the method of manufacturing a terminal system of a battery including a pole, a bushing, a terminal, a case,
Inserting the insert into the case of the battery by incorporating a lower portion of the seating portion of the bushing and a lower portion of the bushing, a coupling portion, a blocking groove, a fixing portion, and a chamfer;
Inserting a pole of the battery into a through hole formed in the center of the bushing;
Forming a terminal by seating a casting mold on an upper end of a seating portion of the bushing in which the pole column is inserted, and injecting an alloy lead solution into the outer periphery and the upper end surface of the upper portion of the bushing; And
Post-processing the outer periphery of the terminal from which the casting mold is removed with a torch; Method of manufacturing a battery terminal system comprising a.
The method of claim 7, wherein
The injection may include insert inserts extending in a straight line so that the chamfers are embedded in the through holes formed in the inner center of the lower bushing,
The post-processing step is a method of manufacturing a battery terminal system, characterized in that for melting the surface of the molded terminal with torch heat.

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