KR20010008115A - filling equipment of battery electrolysis liquid - Google Patents

Abstract

PURPOSE: An apparatus for injecting battery electrode is provided to simplify the overall structure and reduce production cost by reducing the number of parts and easily injecting in accurate quantity. CONSTITUTION: An electrolyte vessel(10) contains a certain amount of electrolyte, and is connected to an inert gas vessel(14) via a gas supply line(12). The inert gas vessel(14) has a pressure adjuster(17) for adjusting a gas pressure exhausted from the inert gas vessel(14). An injection gun(18) is installed in a transfer bracket is sequentially and intermittently moved by a rotation/reverse rotation motor and a screw. The electrolyte is supplied into the injection line between the electrolyte vessel(10) and the injection gun(18). When the injection gun(18) is stopped, a pump(44) is actuated to supply the electrolyte to a barrel of a dispensing unit(34) on a chamber(32).

Description

Filling equipment of battery electrolysis liquid

The present invention relates to an apparatus for injecting an electrolyte into a battery pack, such as a mobile phone, and more particularly, each time the injection gun on the guide is sequentially moved and stopped, the electrolyte is supplied to the barrel on the vacuum chamber by a pump and the injection It relates to a battery electrolyte injection device that can be easily washed when the gun to its supply line is contaminated.

1 is a view showing a battery pack 56 used in a mobile phone, etc., in which a positive electrode plate, a separator, and a negative electrode plate are successively stacked in a plurality of layers inside a sealed precursor 56a, and an electrolyte is filled therein. . An injection hole 56b for injecting an electrolyte is formed in an upper portion of the precursor 56a.

The battery pack 56 includes a positive electrode plate, a separator, and a negative electrode plate in succession as a unit, and puts the unit inside the rolling strip 56a so that the electrode of the unit is drawn out, and then the injection hole 56b in the upper portion of the rolling strip 56a. It was prepared by injecting the electrolyte through the fusion sealing sealing the injection hole (56b) with heat.

Since the battery pack 56 injects the electrolyte into the tank 56a by hand (injector), the injection time is long and the injection amount of the electrolyte is not constant according to the worker, and even a defect is easy to occur. There was a problem that mass production is impossible due to the inability to improve efficiency.

One improvement of this problem is the battery electrolyte injection device of Patent Application No. 2000-48155, which is the applicant's prior application.

Such a prior application includes an electrolyte container for accommodating a constant capacity of the electrolyte; An intermediate container of a constant capacity connected to the injection line to receive the electrolyte solution from the electrolyte container; A barrel connected to the injection line so that the electrolyte can be supplied from the intermediate container, and an upper / lower limit level sensor installed on the outside; An inert gas container connected to a gas supply line to apply the electrolyte solution, the intermediate container, and the electrolyte solution of the barrel to a predetermined pressure; A cap-shaped cross-section chamber in which an injector is connected to an upper end and an open end thereof is an injection line receiving an electrolyte of the barrel; Slider mounted at the lower part of the chamber by the rod of the cylinder and formed in the shape of a plate to block the lower end of the chamber when raised, and a jig mounted with a jig for matching the injection hole of the battery pack to a position corresponding to the injector of the chamber. ; A vacuum pump connected to the intermediate container and the slider by a suction line is provided to suck the electrolyte in the air and the gaseous phase inside the intermediate container and the chamber.

The pre-patent application configured as described above preheats and stirs the electrolyte supplied from the electrolyte container while maintaining the vacuum state of the intermediate container to completely remove the bubbles in the electrolyte and fills the inside of the intermediate container with nitrogen gas as an inert gas. Since the injection process of the battery electrolyte can be automatically performed while minimizing the contact of the battery, it can be injected stably and quickly.

In addition, by removing the evaporated electrolytic components from the intermediate vessel while rapidly condensing them and minimizing their volume, they can maintain a uniform vacuum pressure and improve suction efficiency and can prevent damage to the vacuum pump by the electrolyte. Was.

However, in the above-described electrolyte injection device of the prior application configured as described above, a large number of expensive injection guns are installed in the chamber and an intermediate container including a preheat stirrer is essentially provided, which complicates the overall configuration and thereby increases the production cost. there was.

In particular, in order to prevent contamination of the intermediate container, the barrel, and the injector through the injection line, the electrolyte solution must be periodically cleaned or washed at the time of contamination determination. To do this, each device must be disassembled and washed. The work was too cumbersome and complicated, as well as a problem that takes a lot of washing time.

An object of the present invention has been researched and developed in order to solve the above problems, each time the injection gun mounted on the transfer bracket of the transfer device is sequentially and intermittently moved and stopped by the forward / reverse rotation motor and screw and the electrolyte container and Injecting the electrolyte supplied from the injection line between the injection guns to the barrel of the discharge unit on the chamber, supplying each to the barrel of the discharge unit on the chamber, facilitates quantitative injection, reduces the number of parts, and reduces the assembly time. To provide.

In addition, another object of the present invention is to connect the washing line extending from the washing liquid container to the injection line between the electrolyte container and the pump to easily wash the supply line, the pump and the injection gun whenever the cleaning needs, so that the life is extended One battery electrolyte injection device is provided.

In addition, another object of the present invention is to provide an injection device of a relatively low-cost battery electrolyte by simplifying the components and easy to manufacture by injecting one injection gun provided in the transfer device along the barrel of the discharge unit on the chamber have.

1 is a perspective view showing a battery of a typical mobile phone,

2 is a reference diagram showing an injection device of a battery electrolyte according to the present invention,

Figure 3 is a partial cross-sectional view showing the transfer device and the chamber portion in the device of the present invention,

4 is a side view of FIG. 3;

5 is a cross-sectional view showing a portion of the transfer apparatus of the present invention.

<Description of Signs of Major Parts of Drawings>

10: electrolyte container 12: gas supply line 14: inert gas container

16: injection line 18: injection gun 20: feeder

22: forward / reverse rotation motor 24: screw 26: transfer bracket

30: pump 32: chamber 34: discharge unit

34a: barrel 34b: discharge valve 34c: lower limit level sensor

36: cylinder 36a: rod 38: slider

40: jig 42: suction line 42a, 48a: pneumatic valve

44: vacuum pump 46: cooler 48: vacuum release line

50: vacuum flow controller 52: washing line 54: washing liquid container

The present invention is an electrolyte container for accommodating a constant capacity of the electrolyte to achieve the above object; An inert gas container connected to a gas supply line to apply the electrolyte solution of the electrolyte container to a predetermined pressure; An injection gun in which an electrolyte of the electrolyte container is connected through an injection line by a gas pressure of the inert gas container; A conveying apparatus mounted on a conveying bracket through which a screw passes through the injection gun to the left and right, and a forward / reverse rotation motor connected to one end of the screw to control its operation and rotation direction; A plurality of discharge units installed at a lower portion of the transfer bracket of the transfer device and provided with a barrel configured to receive electrolyte discharged from the injection gun, and having a discharge valve for controlling electrolyte discharge of the barrel as one unit; Chambers having a cap-shaped cross section in which the discharge units are arranged in a row and whose lower ends are opened; Slider mounted at the lower part of the chamber by the rod of the cylinder and formed in the shape of a plate to block the lower end of the chamber when raised, and a jig mounted with a jig for matching the injection hole of the battery pack to a position corresponding to the injector of the chamber. ; A vacuum pump is connected to the slider through a suction line, and the vacuum and release device is installed on the other side of the slider to install a vacuum flow controller to delay the vacuum release of the chamber.

The injection line is characterized in that the pump (gear pump or plunger pump) is installed to drive the electrolyte supplied by the gas pressure of the inert gas container each time the injection gun is opened.

A washing line is connected to the injection line between the electrolyte container and the pump, and a washing container is provided at the end of the washing line to supply the washing liquid (alcohol) by air pressure.

Hereinafter, a device for injecting a battery electrolyte according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a reference view showing an injection device of a battery electrolyte according to the present invention, Figures 3 to 5 are views showing an extraction device and the chamber portion in the device of the present invention.

As shown in the drawing, the electrolyte container 10 is a hermetically sealed container capable of accommodating an electrolyte of a predetermined capacity, and the inert gas container 14 passes through the gas supply line 12 so as to apply the electrolyte therein to a predetermined pressure. Is connected to the gas supply line 12 is provided with a pressure regulator 17 for regulating the gas pressure discharged from the inert gas container (14).

An injection gun 18 is connected to the electrolyte container 10 through an injection line 16, and the injection gun 18 is provided with a solenoid valve on its own and is connected to the transfer bracket 26 of the transfer device 20. It is installed. The electrolyte of the electrolyte container 10 is supplied to the injection gun 18 through the injection line 16 by the gas pressure of the inert gas container 14 applied to the inside of the electrolyte container 10.

The injection line 16 is equipped with a pump 30, ie, a gear pump or a plunger pump, which facilitates quantitative discharging, and the pump 30 injects the electrolyte supplied by the gas pressure of the inert gas container 14. 18) must be connected to a control unit (not shown) to be driven each time it is opened.

The conveying device 20 is a screw 24 is connected to the output rotation shaft of the forward / reverse rotation motor 22, the screw 24 is provided with a conveying bracket 26 which is conveyed in the center line direction according to the rotation direction The transfer bracket 26 is equipped with an injection gun 18.

The front of the transfer device 20 is provided with a chamber 32 having a cap-shaped cross section whose bottom is opened so as to be positioned below the transfer bracket 26, and a plurality of discharge units 34 on the upper surface of the chamber 32. This is arranged in a line. The discharge unit 34 is provided with a transparent barrel 34a for receiving the electrolyte discharged from the injection gun 18 on the transfer bracket 26 and has one discharge valve 34b for controlling the discharge of the electrolyte of the barrel 34a. Units of.

Outside the barrel 34a of the discharge unit 34, a lower limit level sensor 34c, which is a photosensor for sensing the electrolyte surface inside thereof, is installed, and the lower limit level sensor 34c must be able to adjust its height. The lower limit level sensor 34c may be any type of sensor as long as it can detect the electrolyte surface inside the barrel 34a.

The lower limit level sensor 34c outside the barrel 34a senses an electrolyte level inside the barrel 34a and sends a signal to a control unit (not shown). The control unit includes a pump 30 and an injection gun ( The discharge valve 34b is controlled such that only a predetermined amount of the electrolyte solution supplied by 18 is discharged.

The lower part of the chamber 32 is provided with a slider 38 which is raised and lowered by the rod 36a of the cylinder 36 and the slider 38 is raised toward the chamber 32 when the slider 32 is raised. It is formed in a plate shape to block the bottom of the). The slider 38 has a jig 40 for seating the plurality of battery packs 56 so that the injection holes 56b of the battery packs 56 coincide with the discharge valves 34b on the chambers 32. ) Is provided.

The slider 38 is provided with a vacuum and releasing device for generating a vacuum of the chamber 32 and releasing it, which component of air and gaseous electrolyte inside the chamber 32 on one side of the slider 38. A suction line 42 is connected to suction the suction line 42, and a vacuum pump 44 is installed at the end of the suction line 42, and the suction line 42 sucks and passes from the inside of the chamber 32. A cooler 46 for rapidly condensing liquid and gaseous electrolytic components is provided.

A vacuum release line 48 is connected to the other side of the slider 38, and a vacuum flow controller 50 is connected to the vacuum release line 48 to prevent diffusion of the electrolyte by delaying the vacuum release of the chamber 32. It is installed.

Pneumatic valves 42a and 48a are respectively provided on the suction line 42 between the cooler 46 and the slider 38 and the vacuum release line 48 between the slider 38 and the vacuum flow regulator 50, respectively. .

The slider 38 may be provided with two or more suction holes circulated with the suction line 42 so as to easily suck the air in the chamber 32.

The washing line 52 is connected to the injection line 16 between the electrolyte container 10 and the pump 30 and the washing container (alcohol) is supplied to the end of the washing line 52 by air pressure. 54).

In the figure, reference numeral 16a denotes a pneumatic valve installed in the injection line 16 and 52a denotes a pneumatic valve installed in the gas supply line 52.

The injection device of the battery electrolyte according to the present invention configured as described above will be described with reference.

First, when the power switch is turned on, nitrogen gas from the inert gas container 14 is applied to the electrolyte container 10 at a predetermined pressure. At this time, since the pneumatic valve 52a on the gas supply line 52 is closed and the pneumatic valve 16a on the injection line 16 is opened by the control unit, the electrolyte in the electrolyte container 10 is injected into the injection line 16. Supplied through the pump 30 and the injection gun 18 is maintained.

When the driving switch (not shown) is turned on while the electrolyte is supplied to the injection gun 18 as described above, the forward / reverse rotation motor 22 of the transfer device 20 is operated by the control unit. When the screw 24 connected to the output rotation shaft of the forward / reverse rotation motor 22 is rotated, the transfer bracket 26 starts to move to one side.

When the transfer bracket 26 starts to move and the injection gun 18 on the transfer bracket 26 is placed on the first discharge unit 34 on the chamber 32, the forward / reverse rotation motor 22 is stopped. do.

After the injection gun 18 on the transfer bracket 26 is stopped on the barrel 34a of the discharge unit 34, the injection gun is controlled by the control unit in a state in which a predetermined pressure is applied to the injection line 16. The solenoid valve of 18 is opened, and at the same time, the pump 30 is driven to discharge a certain amount of electrolyte to the barrel 34a, and the pump 30 is closed while the solenoid pump of the injection gun 18 is locked. Will be stopped.

As described above, the process of discharging a predetermined amount of electrolyte to the barrel 34a is repeated as many times as the number of times corresponding to the discharging unit 34 on the chamber 32. The electrolyte is supplied to the barrel 34a.

As such, when the supply of the electrolyte solution is completed to the barrels 34a of all the discharge units 34 on the chamber 32, for example, when five discharge units 34 on the chamber 32 are arranged in a row, the fifth After a certain amount of electrolyte is supplied to the barrel 34a of the discharge unit 34, the forward / reverse rotation motor 22 is reversely rotated by the control unit to return to the initial position.

After the conveying bracket 26 of the conveying device 20 is returned to the initial position, the jig 40 having the plurality of battery packs 56 set thereon is set on the slider 38 and then the cylinder 36 is operated. The slider 38 is lifted by the rod 36a so as to be in close contact with the lower end of the chamber 32, so as to be isolated from the atmosphere. At this time, the injection needle of the discharge valve 34b is fitted into the injection hole 56b of the battery pack 56 seated on the jig 40 on the slider 38.

After the chamber 32 is blocked from the atmosphere by the slider 38 as described above, the vacuum pump 44 is operated while only the pneumatic valve 42a on the suction line 42 is opened. Inhalation of the air remaining in the chamber 32 and the electrolyte remaining in the injection needle of the discharge valve 34b is started. At this time, the vacuum pressure inside the chamber 32 is -550 to -750 mmHg.

As such, the air sucked by the vacuum pump 44 and the electrolyte components in the air are condensed and removed when passing through the cooler 46, thereby preventing the damage of the vacuum pump 44 and minimizing its volume to inhale the suction time. Even if kept constant, a constant vacuum state can be obtained at all times without being influenced by the outside.

When the air in the chamber 32 is sucked for a predetermined time and becomes a vacuum state, the solenoid valve of the discharge valve 34b is opened by the control unit, and when the solenoid valve of the discharge valve 34b is opened, the barrel 34a is opened. Since the atmospheric pressure applied to the chamber 32 and the vacuum inside the chamber 32 are due to the pressure difference, the electrolyte of the barrel 34a starts to be easily injected into the battery pack 56. At this time, the vacuum pressure inside the chamber 32 is set to -500 to -600 mmHg.

In this way, when the electrolyte is injected into the vacuum chamber 32, the solenoid valve of the discharge valve 34b is intermittently opened and closed while repeating the pressure change in the chamber 32 two or three times so that it can be stably and quickly injected. do.

In this way, when the electrolyte starts to be injected and the lower limit level sensor 34c outside the barrel 34a detects that the electrolyte surface inside the barrel 34a is lowered, the signal is sent to the control unit, and the control unit receiving the signal sends a discharge valve ( 34b) shuts off the solenoid valve.

After the electrolyte is injected into the chamber 32 in the vacuum state, the pneumatic valve 42a on the suction line 42 is closed and the pneumatic valve 48c of the vacuum release line 48 is opened, so that the vacuum is released. At this time, the vacuum flow controller 50 on the vacuum release line 48 delays the vacuum in the chamber 32 is suddenly released to prevent the electrolyte from diffusing.

When the vacuum in the chamber 32 is released as described above, the cylinder 36 is operated to lower the slider 38 connected to the rod 36a. At this time, the jig 40 on which the battery pack 56 is seated is removed. After removal, the injection hole 56b of the battery pack 56 may be fused in the ultrasonic welding machine.

The process of injecting the electrolyte into the battery pack 56 through the injection gun 18 and the discharge unit 34 in the electrolyte container 10 is the same as described above until the electrolyte of the electrolyte container 10 is exhausted. This is to be performed in sequence and the continuous electrolyte injection into the battery pack 56 is to be made.

As described above, when the electrolyte is injected into the battery pack 56 and the amount of the electrolyte is to be adjusted, the amount of the electrolyte can be adjusted by raising or lowering the position, that is, the height, of the lower limit level sensor 34c in the barrel 34a. .

When the cleaning mode is selected to clean the pump 30, the injection gun 18, the discharge unit 34, and the like while the injection operation of the electrolyte is performed, the pneumatic valve on the injection line 16 is controlled by the control unit. 16a) is locked and the pneumatic valve 52a on the gas supply line 52 is opened to maintain the air at a predetermined pressure in the washing liquid container 10.

In this state, the injection line 16, the pump 30, the injection gun 18, and the discharge unit 34 are simple and short in a short time, as it is carried out several times as in the process of injecting the electrolyte into the battery pack 56. It is also easy to wash.

Unlike the prior art in which the overall configuration is complicated as described in detail above, the injection device of the battery electrolyte according to the present invention is moved whenever the injection gun on the transfer bracket installed to be moved left and right on the transfer bracket of the transfer apparatus is sequentially moved and stopped. By supplying the electrolyte solution supplied to the injection line between the electrolyte container and the injection gun to the barrel on the vacuum chamber, respectively, there is a unique effect that the quantitative injection is easy with a simple structure.

In addition, the present invention by connecting the washing line extending from the washing liquid container to the injection line between the electrolyte container and the pump can easily wash the injection line, pump and injection gun as well as the discharge unit whenever the cleaning is necessary, thereby extending the life This works.

In addition, the present invention has a unique effect of simplifying the components, making the production easy and relatively inexpensive since the injection of one injection gun provided in the transfer device moves along the barrel of the discharge unit on the chamber.

Claims (5)

An electrolyte container 10 accommodating a constant capacity of the electrolyte; An inert gas container 14 connected to the gas supply line 12 to apply the electrolyte solution of the electrolyte container 10 to a predetermined pressure; An injection gun 18 in which the electrolyte of the electrolyte container 10 is connected through the injection line 16 by the gas pressure of the inert gas container 14; The forward / reverse motor is mounted on the conveying bracket 26 through which the screw 24 is penetrated so as to convey the injection gun 18 from side to side and controls its operation and rotation direction at one end of the screw 24. A transfer device 20 to which the 22 is connected; A discharge valve 34b is installed below the transfer bracket 26 of the transfer device 20 and is provided with a barrel 34a for receiving the electrolyte discharged from the injection gun 18 and controls the discharge of the electrolyte from the barrel 34a. A plurality of discharge units 34 in one unit; A chamber 32 having a cap-shaped cross section in which the discharge units 34 are arranged in a row and whose lower ends are opened; It is installed to be elevated by the rod 36a of the cylinder 36 at the lower part of the chamber 32 and is formed in a plate shape which blocks the lower end of the chamber 32 when raised, and discharge valve 34b of the chamber 32. A slider 38 mounted with a jig 40 to align the injection hole 56b of the battery pack 56 at a position corresponding to; The vacuum pump 44 is connected to the slider 38 through the suction line 42 and the vacuum flow controller 50 is installed on the other side of the slider 38 to delay the vacuum release of the chamber 32. And a battery electrolyte injection device, characterized in that the device is provided as a release device. According to claim 1, The injection line 16 is characterized in that the pump 30 which is driven every time the injection gun 18 is opened to the electrolyte supplied by the gas pressure of the inert gas container 14 is installed Battery electrolyte injection device. According to claim 1 or 2, wherein the washing line 52 is connected to the injection line 16 between the electrolyte container 10 and the pump 30, the end of the washing line 52 by air pressure Injecting device of the battery electrolyte, characterized in that the cleaning container 54 is supplied with a cleaning liquid (alcohol) is provided. The battery electrolyte injection device according to claim 2, wherein the pump (30) is a plunger pump. The injection device of a battery electrolyte according to claim 2, wherein the pump (30) is a gear pump.