KR100868684B1 - Pouring apparatus for electrolyte of battery and pouring g method thereof - Google Patents

Abstract

An electrolyte injection device for battery and a injection method of electrolyte using the same are provided to improve the efficiency of the electrolyte injection task by separating the electrolyte injection task inside a battery case to mult-steps and to improve productivity of battery by simplifying a structure of facility through injecting electrolyte inside the battery case of the bulk at a time. An electrolyte injection device for battery includes the first and second housing members(10,20) formed with the space part shut tightly inside; a vacuum unit(30) forming the space part(10a) into vacuum; a case jig member(40) which is fixed by combining the battery case(1) separably and is mounted on the top of the second housing member; a storage case member(50); an electrolyte injection nozzle member(60) including an outlet(61) discharging the electrolyte and an injection valve part(80) opening and closes outlet; a housing lifting unit(70) lifting the first and second housing members.

Description

Battery electrolyte injection device and electrolyte injection method using the same {Pouring Apparatus for Electrolyte of Battery and Pouring g Method Thereof}

The present invention relates to a battery electrolyte injection device, and more specifically, the electrolyte is injected after maintaining the inside of the battery case in a vacuum state, by dividing the injection process into multiple stages to reduce the time required for electrolyte injection, a large amount of battery case electrolyte It is invented to enable the injection operation at once.

In general, a battery is capable of supplying electrical energy including a cathode or a positive electrode and an anode or a negative electrode separated from each other by a separator and an electrolyte that enables ion transfer between the two electrodes. will be.

The battery is divided into a primary battery (general battery) that is discarded after one use and a rechargeable battery that can be reused by charging. In recent years, the demand for secondary batteries is due to the spread of portable electronic devices such as mobile phones, laptops, and PDAs. This is rapidly increasing, and accordingly, the performance of secondary batteries is gradually improved and mass-produced.

On the other hand, conventional batteries, including lithium-ion (Li-ion) battery uses a liquid electrolyte as an electrolyte that allows ion migration in the battery.

That is, the battery is manufactured by inserting a separator blocking the positive electrode plate, the negative electrode plate, the positive electrode plate and the negative electrode plate into the battery case, injecting electrolyte into the battery case, and then sealing the battery case.

Patent application No. 1995-4545304 'Vacuum meter-type injection device for battery electrolyte' has been proposed as a metering device for injecting a fixed amount of electrolyte into a battery case.

As shown in FIG. 1, the vacuum metering device is fixed to the upper peripheral surface of the needle 3a that injects the electrolyte solution into the battery case 1, and is fixed to the fixing piece 2. An electrolyte injection port 4a for supplying an electrolyte solution to one side is provided at a predetermined portion on the upper side of the injector 3 for fixing the needle 3a, and on the other side, a switching port 4b having a predetermined flow path gap is formed in the same body. It consists of a valve body 4 and a cap 5 having a second pressure reducing port 5a on one side above a predetermined portion of the valve body 4.

In addition, the fixing piece (2) is a flap tube-type closed cover (6) to one side, a sealing member (7) for hermetically sealing the upper side of the sealed cover (6), the hermetic cover (6) side and the passage connected to the outside It consists of a first pressure reducing port (2a).

The battery case 1 is coupled to the battery case holder 8, and the sealed cover 6 is coupled to the upper portion of the battery case holder 8.

A fixing piece 2 is mounted on an upper portion of the hermetic cover 6, and the fixing piece 2 includes an injector 3 including a needle 3a protruding downward to protrude into the hermetic cover 6. It is installed.

That is, the vacuum metering device is a pressure and the sealed cover 6 in the injector 3 through the first and second pressure reducing ports 2a and 5a in a state where the sealed cover 6 is sealed as described above. While adjusting the pressure inside the chamber, the pressure inside the sealed cover 6 is evacuated and the electrolyte supplied into the injector 3 through the electrolyte injection port 4a is transferred into the battery case 1 with the needle 3a. To be injected.

However, the above-described conventional vacuum metering device is completed by starting the electrolyte injection operation while connecting the holder for the battery case and the fixed body equipped with the valve body with a sealed cover, thus completing the electrolyte injection operation in one battery case Previously, the electrolyte solution was not able to be injected into the next battery case, which required a lot of working time of the electrolyte, resulting in a decrease in the yield of the battery.

Since the conventional vacuum metering device must be equipped with a single injector and a decompression function for the vacuum inside the can, it is expensive to manufacture the injector, so it is possible to design a device for injecting electrolyte into a large number of battery cases at once. In this case, the manufacturing cost is high, and due to the complexity of connecting the air pressure adjusting means and the electrolyte injection means to each injector, there is a problem in that the number of battery cases capable of injecting electrolyte at one time is limited.

In addition, since the electrolyte must be discharged from the injector according to the rate at which the electrolyte is injected into the battery case in the vacuum state during the electrolyte injection operation, the injection operation takes a long time, and the electrolyte overflows out of the battery case frequently during the injection operation. There were many problems with the defective rate.

An object of the present invention is to provide a battery electrolyte injection device and an electrolyte injection method using the same to increase the efficiency of the electrolyte injection operation by separating the electrolyte injection operation in the battery case in multiple stages.

Another object of the present invention is to provide a battery electrolyte injection device and an electrolyte injection method using the same to simplify the structure of the equipment to increase the productivity of the battery by injecting the electrolyte into a large number of battery cases at a time.

The object of the present invention is the first, the second housing member to be detachably coupled to the upper, lower, and coupled to form a sealed space therein;

Vacuum means associated with the space to form the space into a vacuum; A case jig member mounted on an upper portion of the second housing member, the case jig member fixedly coupled to the battery case to be detachably coupled thereto;

A storage compartment having a storage compartment for storing an electrolyte therein and having an inlet and an outlet formed in upper and lower portions thereof communicating with the storage compartment, respectively, coupled to an upper portion of the battery case;

An electrolyte injection nozzle member provided to inject the electrolyte into the storage case member, the electrolyte being supplied into the space and discharged through a discharge port, and including an injection valve part to open and close the discharge port;

 It is solved by providing an electrolyte injection device for a battery including a housing lifting means for lifting and lowering any one of the first and second housing members to separate and combine the first and second housing members.

In addition, an object of the present invention and the case fixing step of fixing the battery case by coupling the case jig member;

A storage member coupling step of coupling a storage case member to an upper portion of the battery case which has undergone the case fixing step;

A vacuum step of transferring the case jig member through the storage member coupling step to an upper portion of the second housing member, and then coupling the first and second housing members to vacuum the space;

An electrolyte injection step of supplying and storing the electrolyte solution to the storage case member to the electrolyte injection nozzle member;

A conveying step of removing the first and second housing members and conveying the case jig members;

The case jig member is transferred to the pressurizing chamber to be solved by the electrolyte injection method using the battery electrolyte injection device including a pressure injection step of injecting the electrolyte in the storage case member into the battery case through the pressure in the pressure chamber.

The present invention has the effect of increasing the productivity of the battery by reducing the total time required for the electrolyte injection operation by increasing the circulation rate of the electrolytic injection operation by dividing the injection step into several steps.

In addition, it is possible to inject a large amount of electrolyte into a battery by forming a large amount of inside the battery case in a single vacuum operation and then injecting electrolyte at a time to increase the productivity of the battery and to reduce a defective rate during battery manufacturing. It is effective to let.

When described in detail with reference to the accompanying drawings a preferred embodiment of the present invention.

Figure 2 is a block diagram of the present invention, including the first and second housing members, the vacuum means, the case jig member, the storage case member, the electrolyte injection nozzle member, and the housing lifting means for constituting the battery electrolyte injection device of the present invention An embodiment is shown.

Figure 3 is a perspective view showing a case jig member of the present invention, Figure 4 is a cross-sectional view of the case jig member of Figure 3, showing an example of a case jig member for coupling and fixing a plurality of battery cases in the present invention.

5A to 5C are schematic views showing one embodiment of the present invention, and show an embodiment of the plate lifting means for controlling the injection of electrolyte by raising or lowering the opening and closing plunger of the present invention.

6A to 6D are diagrams illustrating a state of use of the present invention, which is solved by providing an electrolyte injection device for a battery according to the present invention.

Hereinafter, as shown in FIG. 2, the first and second housing members 10 and 20 of the battery electrolyte injection device according to the present invention are separated into upper and lower parts, and the first housing member 10 has an open shape with an open bottom. The space portion 10a is formed therein, including a housing upper plate 11 and a housing side portion 12 surrounding the housing upper plate 11.

The second housing member 20 is formed of a housing lower plate 21 that is coupled to the lower portion of the first housing member 10 to form a lower surface of the space portion 10a, thereby forming a case jig member 40 to be described later. It is desirable to transfer it so that it is easy to be mounted upward.

In addition, the housing sealing portion 13 protrudes from one side coupling surface on the mutual coupling surface of the first housing member 10 and the second housing member 20, and the housing sealing portion 13 on the other coupling surface. The sealing coupling groove 22 is coupled to guide the coupling of the first and second housing members 10 and 20 and simultaneously seals the coupled portion.

The housing sealing portion 13 protrudes from the bottom surface of the housing side portion 12 of the first housing member 10, and the sealing coupling groove 22 is formed on the upper surface of the second housing member 20. And the housing sealing part 13 protrudes along the bottom surface of the housing side part 12 to completely seal the coupling part of the first and second housing members 10 and 20. It is desirable to make it possible.

A vacuum means 30 is connected to the housing side portion 12 of the first housing member 10 so that the first and second housing members 10 and 20 are coupled to each other so that the sealed space portion 10a is in a vacuum state. Form.

The vacuum means 30 includes a vacuum pipe member 31 connected to the space portion 10a and a vacuum pump 32 for sucking gas in the space portion 10a connected to the vacuum pipe member 31. In addition, the vacuum pump 32 sucks gas in the space portion 10a, that is, air, thereby lowering the air pressure in the space portion 10a to 1/1000 mmHg or less to form a vacuum state.

The vacuum means 30 can be used in addition to anything that can be made in a vacuum state by lowering the air pressure in the space (10a), which is found to be included in the configuration of the present invention.

In addition, a case jig member 40 to which the battery case 1 is detachably coupled and fixed is seated on an upper portion of the second housing member 20, and a lower surface of the case jig member 40 is connected to a jig to be described later. It is coupled to the bar 72c and seated in the correct position for the injection operation.

The case jig member 40 includes a jig plate 41 having a plurality of case coupling grooves 41a formed on an upper surface thereof, and a plurality of battery cases 1 including a case coupling groove 41a formed on the jig plate 41. ) And the case coupling groove 41a is formed to correspond to the shape and size of the battery case 1 to prevent the flow of the battery case 1 in the coupled state and to fix the position. will be.

The inside of the battery case 1 is a positive electrode plate, a negative electrode plate, a separator (separator) is inserted, the electrolyte is injected in the state in which the jelly roll is inserted by inserting a separator between the positive electrode plate and the negative electrode plate.

In addition, a storage case member 50 having a storage chamber 51 for storing an electrolyte therein is coupled to an upper portion of the battery case 1.

Upper and lower portions of the storage case member 50 communicate with the storage chamber 51 and the inlet 52 and the discharge port 53, respectively, to supply the electrolyte into the storage chamber 51 and to discharge the stored electrolyte.

The inlet port 52 of the storage case member 50 is connected to the discharge port 61 of the electrolyte injection nozzle member 60 to be described later, the discharge port 53 is connected to the inside of the battery case (1).

The storage case member 50 is provided with an inlet sealing portion 50a having an inlet 52 connected to the outlet 61 of the electrolyte injection nozzle member 60 at an upper portion thereof, and having an outlet 53 formed at a lower portion thereof. The sealing part 50b is provided.

The inflow sealing part 22 and the discharge sealing part 23 are made of a conventional sealing material having elasticity, and are manufactured using EPDM (ethylene propylene rubber) that does not react with the electrolyte in the present invention.

The inflow sealing part 50a is in close contact with the end of the electrolyte injection nozzle member 60, and the discharge sealing part 50b is in close contact with the upper inner surface of the battery case 1 by being coupled to the upper inside of the battery case 1. It is to seal between each other.

3 to 4, the case jig member 40 includes a jig plate 41 having a plurality of case coupling grooves 41a formed on an upper surface thereof, and a case in which a plurality of storage case members 50 are mounted. A fixing plate 42, a case support spring portion 43 mounted inside the case coupling groove 41a to elastically support the battery case 1, and protruding upward from the jig plate 41 to fix the case; It is coupled to the plate 42, the elastic support 44 having a plate support spring (44a) for supporting the case fixing plate 42 and the jig plate 41 is provided on both sides of the case fixing plate 42 It includes a plate clamp (45) for hanging on both sides of the).

The plate clamp 45 is provided with a locking jaw (45a) is caught on the locking portion 42a provided on the side of the case fixing plate 42 at the end, the hinge is coupled to the side of the jig plate 41, the spring It is elastically supported by the opening to a predetermined angle and then back to the structure to be fixed by hanging the engaging portion (42a) of the case fixing plate.

The battery case 1 is coupled to the case coupling groove 41a of the jig plate 41 and elastically supported by the case support spring part 43 so that the battery case 1 is closely attached to the storage case member 50 coupled to the upper portion. Will be.

In addition, the storage case member 50 is coupled to seal more closely with the battery case 1 by a plate support spring 44a that elastically supports the case fixing plate 42.

In addition, the case support spring 43 and the plate support spring 44a absorb the shock generated during the electrolyte injection operation to prevent the flow of the battery case 50 and the storage case member 50, sealing of the coupling portion It is to maintain the state.

The battery case 1 and the storage case member 50 are completely sealed as described above to maintain the vacuum state inside the battery case 1 during the electrolytic injection operation, and to perform a smooth and stable injection operation. .

On the other hand, the second housing member 20 is lifted or lowered by the housing lifting means 70 is coupled to, and separated from the first housing member 10, the case jig member 40 to the upper in the separated state ) Is seated upward, and the case jig member 40 is seated and then lifted by the housing elevating means 70 to be coupled to the first housing member 10 to seal the space 10a therein. will be.

The housing elevating means 70 includes a first elevating portion 71 for elevating or lowering the second housing member 20, and a case jig member 40 seated on an upper portion of the second housing member 20. It includes a second lifting unit 72 for elevating or lowering.

The first and second lifting parts 71 and 72 may include first and second hydraulic pressures for raising or lowering the second housing member 20 or the case jig member 40 coupled to the piston by protruding and inserting the piston vertically. It is based on the use of the cylinders 71a and 72a.

The second lifting unit 72 protrudes upward from the second hydraulic pneumatic cylinder 72a, the second lifting plate 72b lifted by the hydraulic pneumatic cylinder, and the second lifting plate 72b. The jig connecting rod 72c is coupled to the bottom surface of the case jig member 40 to protrude in a sealed state through the second housing member 20 and to be coupled in a vacuum sealed state.

The case jig member 40 is seated on an upper surface of the second housing member 20, and coupled to an end of a jig connecting rod 72c protruding from the upper surface of the second housing member 20 to form a second hydraulic cylinder ( The operation of 72a) raises or lowers.

The second hydraulic pneumatic cylinder (72a) is raised or lowered by the first hydraulic pneumatic cylinder (71a), is installed on the first lifting plate 71b connected to the second housing member 20, the first hydraulic pneumatic cylinder The operation of the 71a raises or lowers together with the second housing member 20, and the second housing member 20 moves up and down to operate the case jig member 40 to move up or down.

On the other hand, the injection upper portion 11 of the first housing member 10 of the housing upper plate 11 is supplied with an electrolyte solution and discharged through the discharge port 61 formed in the lower, opening and closing the discharge port 61 Including a plurality of electrolyte injection nozzle member 60 for injecting the electrolyte into the interior of the storage case member 50 in the space (10a).

The electrolyte injection nozzle member 60 is provided to correspond to the number and position of the case coupling grooves 41a provided in the case jig member 40, so that the electrolyte case of the battery case 1 is coupled to each case coupling groove 41a. Inject the electrolyte into the interior.

The electrolyte injection nozzle member 60 is connected to an electrolyte supply tube (not shown) for supplying an electrolyte solution to each inside, and the electrolyte supply tube is provided with a supply control valve (not shown) for controlling the supply of the electrolyte.

The injection valve 80 is moved up and down to open and close the plunger 81 to open and close the discharge port 61, a plunger fixing plate 82 to which a plurality of opening and closing plunger 81 is mounted and fixed, the plunger fixing plate 82 It includes a plate lifting means 83 for raising or lowering).

The opening and closing plunger 81 is formed with an electrolyte inflow path 81a for supplying the electrolyte into the electrolyte injection nozzle member 60 in the body, and injecting the electrolyte solution through the electrolyte inflow path without a separate inflow port. It is preferable to be able to supply the inside of the nozzle member (60).

The plate raising and lowering means 83 allows the plurality of opening and closing plungers 81 to operate simultaneously by raising or lowering the plunger fixing plate 82.

Since each of the opening and closing plungers 81 are lifted and lowered at the same time and the discharge port 61 is opened and closed, the electrolyte injection nozzle member 60 controls the amount of the electrolyte injected into the battery case 1 as a matter of course. Injecting the electrolyte into the storage case member 50 can be completed at the same time to increase the efficiency of the injection operation.

The plate elevating means 83 is provided in the lower portion of the plunger fixing plate 82 at a predetermined interval to distribute the output in one hydraulic pneumatic cylinder to raise or lower the plunger fixing plate 82 horizontally The opening and closing plunger 81 may be operated vertically.

In addition, the plate elevating means 83 is provided with an inclined guide portion 91 inclined on one side, the first elevating operation block coupled to the upper surface of the first housing member 10 so as to be movable before and after. 90;

A first elevating member coupled to the inclined guide portion 91 of the first elevating operation block 90, movably coupled along the inclined guide portion 91, and mounted to a lower portion of the plunger fixing plate 82; A guide block 100;

It is connected to the first elevating operation block 90 includes a block actuating hydraulic cylinder 110 for moving the first elevating operation block 90 before, after.

The inclination angle of the inclined guide portion 91 is based on the operating length of the block actuated hydraulic cylinder 110 and the lifting or lowering height of the opening / closing plunger 81 for opening and closing the discharge port 61 of the electrolyte injection nozzle member 60. It can be implemented by various modifications in the design to any value determined.

When the first elevating operation block 90 moves forward, the inclined direction of the inclined guide 91 is pushed up and down along the inclined guide 91 when the first elevating guide block 100 is moved upward. When the elevating operation block 90 moves backward, the first elevating guide block 100 is formed to be pushed down along the inclined guide portion 91 to be lowered.

The first elevating operation block 90 and the first elevating guide block 100 are provided with first and second inclined surfaces 90a and 100a facing each other and in contact with each other. It is desirable to be guided to move more smoothly to operate.

The inclined guide portion 91 may be formed by digging inclined rail grooves on both sides of the first elevating operation block 90.

In addition, the inclined guide portion 91 forms a first inclined surface 90a on one side of the first elevating operation block 90, and rail grooves are formed on both sides thereof to be inclined to the first inclined surface 90a. It is also possible to use the guide rail 91a.

The first elevating guide block 100 has a second inclined surface 100a inclined at an angle corresponding to the first inclined surface 90a on a mating surface corresponding to the first inclined surface 90a and the guide rail ( The rail coupling portion 101 is coupled to the guide rail 91a and is movable to the guide rail 91a.

In addition, the plate elevating means 83 is provided with an inclined guide portion 121 inclined on one side, coupled to the upper surface of the first housing member 10 so as to be movable before and after the first elevating operation A second elevating operation block 120 connected to the block 90;

A second lift is coupled to the inclined guide portion 121 of the second elevating operation block 120, movably coupled along the inclined guide portion 121 and mounted to the lower portion of the plunger fixing plate 82. It is preferable to include the guide block 130.

The second elevating operation block 120 is connected to the movement connecting portion 112, the movement connecting portion 112, both ends of the second elevating operation block 120 and the first elevating operation block 90, respectively. Are fixed to each.

The inclined guide portion 121 of the second elevating operation block 120 is configured to correspond to have the same inclination angle as the inclined guide portion 91 of the first elevating operation block 90, the second elevating guide The block 130 is operated in the same manner as the first elevating guide block 100.

The first elevating operation block 90 and the first elevating guide block 100 are provided on both sides of the plunger fixing plate 82, as shown in Figure 5b, the first elevating operation block on both sides 90 is preferably connected to the connecting rod 111 is operated by the block actuated hydraulic cylinder (110).

In addition, the second elevating operation block 120 and the second elevating guide block 130 are provided on both sides of the plunger fixing plate 82 to be connected to the first elevating operation block 90, respectively. .

The first raising and lowering operation block 90 on both sides is connected to the connecting rod 111 to move back and forth with the operation of the one block operation hydraulic pneumatic cylinder 110 so that both sides of the plunger fixing plate 82 are the same. It is to raise or lower the plunger fixing plate 82 stably while supporting it.

The first elevating operation block 90 is moved forward by the block actuated hydraulic cylinder 110, as shown in Figure 5c, wherein the first elevating guide block 100 is the first elevating operation block The plunger fixing plate 82 is lifted vertically while being pushed up by the inclined guide portion 91 of 90.

In addition, the second elevating operation block 120 is connected to the first elevating operation block 90 and moves forward together, wherein the second elevating guide block 130 is the second elevating operation block ( The swivel guide portion 121 of the 120 is pushed to move up to assist the plunger fixing plate 82 to vertically lift.

The opening and closing plunger 81 is lifted together with the plunger fixing plate 82 to open the discharge port 61 of the electrolyte injection nozzle member 60.

The first elevating operation block 90 is moved backward by the block operation hydraulic pneumatic cylinder 110, at which time the first elevating guide block 100 is pushed down by the inclined guide portion 91 The plunger fixing plate 82 is lowered vertically.

In addition, the second elevating operation block 120 is connected to the first elevating operation block 90 and moves backward together, wherein the second elevating guide block 130 is the second elevating operation block ( It is to assist the lower plunger fixing plate 82 to be vertically lowered while moving down by pushing the inclined guide portion 121 of 120.

The opening and closing plunger 81 is lowered together with the plunger fixing plate 82 to close the discharge port 61 of the electrolyte injection nozzle member 60.

The plate raising and lowering means 83 raises and lowers the opening and closing plunger 81 smoothly by vertically raising or lowering the plunger fixing plate 82 vertically by the operation of the first and second elevating operation blocks 90 and 120. The sealing part and the opening / closing plunger 81 between the opening / closing plunger 81 and the electrolyte injection nozzle member 60 while the opening and closing operation for opening and closing the discharge port 61 of the electrolyte injection nozzle member 60 as well as preventing a malfunction are repeated. To prevent damage.

On the other hand, a plate for guiding the operation of the plate lifting means 83 between the upper surface of the first housing member 10, that is, the upper surface of the housing upper plate 11 and the plunger fixing plate 82. It is preferable to provide the guide part 84.

The plate guide part 84 is fixed to one side of the upper and lower surfaces of the first housing member 10, the lowering guide rail 84a fixed to one side of the lower surface of the plunger fixing plate 82, and the other side. And a guide block 84b movably coupled to the elevating guide rail 84a.

The elevating guide rail 84a is basically mounted on an elevating guide bracket 84c which is mounted and fixed vertically on both sides of the upper surface of the first housing member 10. The guide block 84b is Mounted vertically fixed to the lower surface of the plunger fixing plate 82 is to be coupled to move vertically along the elevating guide rail (84a).

When the plunger fixing plate 82 is lifted or lowered through the plate lifting means 83, the guide block 84b moves in a state coupled to the lifting guide rail 84a, and thus the up and down driving is more precise. Sealing between the opening and closing plunger 81 and the electrolyte injection nozzle member 60 while the opening and closing plunger 81 is raised and lowered more smoothly and prevents malfunction as well as the opening and closing operation for opening and closing the discharge port 61 is repeated by guiding accurately. It is to prevent damage to the portion and the opening and closing plunger 81 as much as possible.

The method of inject | pouring electrolyte solution into the battery case 1 using the above-mentioned battery electrolyte injection device of this invention is as follows.

The battery case 1 is inserted into the case coupling groove 41a of the jig plate 41 after the process of inserting the contents (eg, jelly roll) including the positive electrode plate, the negative electrode plate, and the separator and then transferred to a separate clamp transfer device. The case is fixed.

After the case fixing step, the storage member coupling step of coupling the storage case member 50 to the top of the jig plate 41 is passed.

The storage member coupling step is a case fixing plate (42) with a plurality of case storage member is mounted to the upper jig plate 41, coupled to the elastic support 44, while pressing the plate fixing plate (45) 42) is completed by hanging.

At this time, the lower part of the storage case member 50 is coupled into the upper part of the battery case 1, but the discharge sealing part is coupled to the inner surface of the battery case 1 while being sealed in close contact.

In addition, the battery case 1 is elastically supported by the case support spring to be in close contact with each of the storage case members 50 even with a slight height difference.

In addition, since the case fixing plate 42 is elastically supported by the plate support spring 44a by being coupled to the elastic support 44, the storage case member 50 is completely in close contact with the battery case 1, and the work is performed. It is to prevent the flow and departure due to the impact generated during.

The case jig member 40, which has completed the coupling of the storage case member 50, is transferred to the upper portion of the second housing member 20, and then, the first and second housing members 10 and 20 are coupled to each other, and the space portion 10a. It goes through a vacuum step to vacuum the inside.

The case jig member 40 is coupled to the end of the jig connecting rod 72c while being transported and seated on the upper portion of the second housing member 20.

As shown in FIG. 6A, the second housing member 20 is elevated by the first elevating portion 71, that is, the first hydraulic cylinder 71a of the housing elevating means 70, so that the first housing member 10 may be lifted. Coupling to the bottom of the housing side portion 12 of the () to form a closed space portion (10a).

Then, by opening the conduit of the vacuum pipe member 31 connected to the space portion 10a and operating the vacuum pump 32 to remove the air in the space portion 10a to make a vacuum state.

At the same time, the electrolyte is supplied and filled into the electrolyte injection nozzle member 60 through the electrolyte inflow path 81a of the opening and closing plunger 81.

As the space part 10a is in a vacuum state, the inside of each battery case 1 and the inside of the storage case member 50 in the space part 10a are also in a vacuum state.

As described above, when the space portion 10a is in a vacuum state, as shown in FIGS. 6B to 6C, the case jig member 40 is elevated by the second lifting portion 72, that is, the second hydraulic cylinder 72a. The inlet 52 of the storage case member 50 is attached to an end portion of the electrolyte injection nozzle member 60 mounted on the housing upper plate 11 of the first housing member 10.

The inlet sealing portion 50a of the storage case member 50 is sealed in close contact with the end of the electrolyte injection nozzle member 60, the inlet 52 is connected to the discharge port 61 of the electrolyte injection nozzle member 60 will be.

After the vacuum step, an electrolyte injection step of injecting the electrolyte solution supplied into the electrolyte injection nozzle member 60 into the storage case member 50 is performed.

As the discharge opening 61 of the electrolyte injection nozzle member 60 is opened and opened by the opening and closing plunger 81, the opening and closing plunger 81 is lifted and lowered by the plate lifting and lowering means 83. As shown in FIG. 6D, the plurality of opening and closing plungers 81 are simultaneously lifted to open the discharge ports 61 of the plurality of electrolyte injection nozzle members 60 mounted on the housing upper plate 11.

The electrolyte is naturally injected into the storage case member 50 and the battery case 1 in a vacuum state due to the pressure difference as the discharge port 61 is opened.

The electrolyte injection nozzle member 60 receives and discharges a predetermined amount of electrolyte injected into each battery case 1, and the discharged electrolyte is naturally injected into the battery case 1 in a vacuum state, and the rest is stored in a storage case. It is stored in the storage chamber 51 of the member 50 and gradually injected into the battery case 1 in a vacuum state.

After all of the electrolyte solution supplied into the electrolyte injection nozzle member 60 is discharged, the opening and closing plunger 81 is lowered to close the discharge port 61 and supply the electrolyte solution again.

The opening and closing plunger 81 is lowered as the plunger fixing plate 82 is lowered by the plate elevating means 83 and the plurality of opening and closing plungers 81 are simultaneously lowered and mounted to the housing upper plate 11. At the same time, the discharge port 61 of the electrolyte injection nozzle member 60 is closed.

After the electrolyte injection step, a transfer step of transporting the case jig member 40 after separating the first and second housing members 10 and 20 is performed, and the electrolyte solution in the storage case member 50 is vacuumed during the transfer step. The injection step is naturally made into the battery case 1 in a state.

In the transfer step, once the case jig member 40 is lowered by the operation of the second lifting unit 72, that is, the second hydraulic pneumatic cylinder (72a) is to be returned to the upper portion of the second housing member (20).

In addition, the second housing member 20 is lowered to the first elevating portion 71, that is, the first hydraulic cylinder 71a, is separated from the first housing member 10, and is repositioned to correspond to the transport table.

The case jig member 40 is transferred from the second housing member 20 to a separate transfer device.

The battery case 1 is maintained in a vacuum state due to the electrolyte filled in the storage case member 50 coupled to the upper, the electrolyte is gradually injected into the interior due to the internal pressure difference of the vacuum state.

Although not shown, the case jig member 40 is transferred to the inside of the pressurizing chamber having a pressurizing chamber therein, thereby increasing the pressure in the pressurizing chamber to completely inject the electrolyte solution of the storage case member 50 into the battery case 1. It is preferably completed through a pressure injection step.

Although not shown, the pressurizing chamber includes a pressurizing chamber capable of storing the case jig member 40 therein and a pressurizing means for increasing the pressure inside the pressurizing chamber.

It may be injected using the internal vacuum state of the battery case 1 that is maintained in a vacuum state during the transfer without passing the pressure injection step, but the plurality of battery cases 1 fixed to the case jig member 40 by the pressure injection step. By injecting the electrolyte into the cell, the completion time of the electrolyte injection operation can be shortened, and the circulation rate of the electrolyte injection operation can be increased to increase the yield of the battery.

The electrolyte injection device is a facility of a production line for producing a battery, the mass production of the battery while repeating the electrolyte injection method in the production line.

The present invention is not limited to the above-described embodiments, and various changes can be made without departing from the gist of the present invention, which is understood to be included in the configuration of the present invention.

1 is a cross-sectional view showing a conventional electrolyte injection device

2 is a block diagram of the present invention

Figure 3 is a perspective view showing a case jig member of the present invention

4 is a cross-sectional view of the case jig member of FIG.

5A to 5C are schematic diagrams showing one embodiment of the present invention.

6a to 6d is a use state diagram of the present invention

* Description of the major symbols in the drawings *

1 battery case 10 first housing member

11 housing top plate 12 housing side part

13: housing sealing portion 20: second housing member

30: vacuum means 40: case jig member

41: jig plate 42: case fixing plate

43: case support spring portion 44: elastic support portion

45 plate clamp 50 storage case member

51: storage chamber 52: inlet

53 outlet 60 60 electrolyte injection nozzle member

61 discharge port 70 housing lowering means

71: first lifting unit 72: second lifting unit

80: injection valve portion 81: opening and closing plunger

82: plunger fixing plate 83: plate lifting means

90: first elevating operation block 100: first elevating guide block

110: block operation pneumatic cylinder 111: connecting rod

120: second elevating operation block 130: second elevating guide block

Claims (8)

First and second housing members detachably coupled to upper and lower parts, and coupled to form a closed space part therein; Vacuum means associated with the space to form the space into a vacuum; A case jig member mounted on an upper portion of the second housing member, the case jig member fixedly coupled to the battery case to be detachably coupled thereto; A storage compartment having a storage compartment for storing an electrolyte therein and having an inlet and an outlet formed in upper and lower portions thereof communicating with the storage compartment, respectively, coupled to an upper portion of the battery case; An electrolyte injection nozzle member provided to inject the electrolyte into the storage case member, the electrolyte being supplied into the space and discharged through a discharge port, and including an injection valve part to open and close the discharge port; And a housing elevating means for separating and coupling the first and second housing members by raising and lowering any one of the first and second housing members. The method according to claim 1, The storage case member is provided with an inlet sealing portion formed with an inlet connected to the outlet of the electrolyte injection nozzle member in the upper portion, the electrolyte injection device for a battery, characterized in that it comprises a discharge seal formed with a discharge port in the lower portion. The method according to claim 1, The case jig member includes a jig plate having a plurality of case coupling grooves formed on an upper surface thereof; A case fixing plate on which a plurality of storage case members are mounted; A case support spring unit mounted inside the case coupling groove to elastically support the battery case; An elastic support part protruding above the jig plate and coupled to a case fixing plate, the plate supporting spring supporting a case fixing plate; And a plate clamp provided at both sides of the jig plate to fix the both sides of the case fixing plate. The method according to claim 1, The housing elevating means includes a first elevating portion for elevating or lowering the second housing member, and a second elevating portion for elevating or lowering the case jig member seated on the upper portion of the second housing member. Battery electrolyte injection device. The method according to claim 1, An opening / closing plunger which is lifted up and down to open and close the discharge port; A plunger fixing plate to which a plurality of opening and closing plungers are mounted and fixed; And a plate elevating means for elevating the plunger fixing plate. The method according to claim 5, The plate elevating means is provided with an inclined guide portion inclined on one side, the first elevating operation block coupled to the upper surface of the first housing member so as to be movable before and after; A first elevating guide block coupled to the inclined guide portion of the first elevating operation block, the first elevating guide block being movably coupled along the inclined guide portion and mounted to a lower portion of the plunger fixing plate; And a block actuating hydraulic pneumatic cylinder connected to the first raising and lowering operation block to move the first raising and lowering operation block before and after. The method according to claim 5, Electrolytic solution injection device comprising a plate guide for guiding the operation of the plate lifting means between the upper surface of the first housing member and the plunger fixing plate. A case fixing step of coupling and fixing the battery case to the case jig member; A storage member coupling step of coupling a storage case member to an upper portion of the battery case which has undergone the case fixing step; A vacuum step of transferring the case jig member through the storage member coupling step to an upper portion of the second housing member, and then coupling the first and second housing members to vacuum the space; An electrolyte injection step of supplying and storing the electrolyte solution to the storage case member to the electrolyte injection nozzle member; A conveying step of removing the first and second housing members and conveying the case jig members; An electrolyte solution injection method using a battery electrolyte injection device according to claim 1, comprising a pressure injection step of transferring the case jig member into the pressure chamber to inject the electrolyte solution in the storage case member into the battery case through the pressure in the pressure chamber.

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