KR20150044228A - Pressuring apparatus able to detecting leakage of pressuring chamber - Google Patents

Pressuring apparatus able to detecting leakage of pressuring chamber Download PDF

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KR20150044228A
KR20150044228A KR20130123355A KR20130123355A KR20150044228A KR 20150044228 A KR20150044228 A KR 20150044228A KR 20130123355 A KR20130123355 A KR 20130123355A KR 20130123355 A KR20130123355 A KR 20130123355A KR 20150044228 A KR20150044228 A KR 20150044228A
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pressure
pressurizing
unit
chamber
gas
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KR20130123355A
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KR101848105B1 (en
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이은정
김정수
여창신
남상봉
이향목
강태원
박준화
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주식회사 엘지화학
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/308—Detachable arrangements, e.g. detachable vent plugs or plug systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0422—Cells or battery with cylindrical casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/574—Devices or arrangements for the interruption of current
    • H01M50/578—Devices or arrangements for the interruption of current in response to pressure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Secondary Cells (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

The present invention relates to a pressing apparatus to add a pressure to a secondary battery in order to increase the electrolyte impregnation efficiency of the secondary battery and, more specifically, to a pressing apparatus capable of sensing a leakage from the inside of a pressing chamber composing the pressing apparatus. The pressing apparatus for a secondary battery to sense a leakage includes: a pressing chamber which is able to accommodate the secondary battery to which electrolyte is injected; a pressing unit which is connected with the pressing chamber and presses the pressing chamber by supplying gas to the inside of the pressing chamber; a bent unit which is connected with the pressing chamber and discharges gas from the inside of the pressing chamber; and a pressure measuring unit which is connected respectively to the pressing unit and the bent unit and measures the pressure of the pressing unit and the pressure of the bent unit. A leakage of the pressing chamber can be detected by comparing a pressure difference between the pressing unit and the bent unit which are measured in the pressure measuring unit. The pressing apparatus for a secondary battery to sense a leakage has a technical effect which is able to constantly maintain an electrolyte impregnation rate of the secondary battery.

Description

누설감지 가능한 이차전지용 가압장치 {PRESSURING APPARATUS ABLE TO DETECTING LEAKAGE OF PRESSURING CHAMBER}BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a pressure-

본 발명은 이차전지의 전해액 함침 효율을 증가시키기 위해 이차전지에 압력을 가하는 가압장치에 관한 것으로, 구체적으로 가압장치를 구성하는 가압챔버 내부의 누설을 감지할 수 있는 가압장치에 관한 것이다.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a pressure device for applying pressure to a secondary battery to increase the electrolyte impregnation efficiency of a secondary battery, and more particularly, to a pressure device capable of detecting a leakage in a pressure chamber constituting a pressure device.

최근 모바일 기기에 대한 수요가 급격하게 증가함에 따라 모바일 기기에 적용되는 이차전지의 수요도 증가하고 있으며, 이에 따라 이차전지에 대한 기술적 연구도 활발하게 이루어 지고 있다.Recently, as the demand for mobile devices is rapidly increasing, the demand for secondary batteries applied to mobile devices is also increasing. Accordingly, technical researches on secondary batteries have been actively conducted.

일반적으로 이차 전지는 재충전이 가능하고 소형 및 대용량화가 가능한 전지로, 대표적으로는 리튬(Li) 이차전지가 사용되고 있다.2. Description of the Related Art Generally, a secondary battery is a rechargeable battery capable of being small and large in capacity, and typically a lithium (Li) secondary battery is used.

종래의 이차전지는 전지케이스 내부에 양극판/분리막/음극판이 교번되게 적층된 젤리롤을 내장시킨 후 전해액을 주입시킨다. 여기서 전해액은 이차전지에서 이온을 전달하는 매개체로서, 일반적으로 용매와 염으로 구성되어 있다.In the conventional secondary battery, a jelly roll in which a positive electrode plate / separator / negative electrode plate is alternately stacked is built in a battery case, and then an electrolyte is injected. Here, the electrolyte is an agent for transferring ions in a secondary battery, and is generally composed of a solvent and a salt.

구체적으로 이차전지는 이온의 삽입, 탈리가 가능한 물질을 양극 및 음극으로 사용하고, 이들 사이에 분리막을 배치한 후 전해액을 주입시켜 제조된다. 전해액은 이온 전도의 기능을 담당하며, 충전시 양극에서 음극으로 방전시 음극에서 양극으로 리튬이온을 운반하는 역할을 한다.Specifically, the secondary battery is manufactured by using materials capable of inserting and desorbing ions as an anode and a cathode, arranging a separator therebetween, and injecting an electrolyte. The electrolyte plays the role of ion conduction and plays the role of transporting lithium ions from the cathode to the anode when discharging from the anode to the cathode during charging.

이러한 전해액을 전지케이스 내부로 주입하기 위해서는 전지케이스 내부를 대기압보다 낮은 상태로 만들어 전해액을 주입시키는 진공공정과, 주입된 전해액이 젤리롤 내부로 스며들게 하는 가압공정을 수행한다.In order to inject the electrolytic solution into the battery case, a vacuum process is performed to make the inside of the battery case lower than the atmospheric pressure to inject the electrolytic solution, and a pressing process to allow the injected electrolytic solution to permeate into the jelly roll.

그러나 기존에는 가압공정을 수행하는 가압챔버에 기밀이 유지되지 않아서 전해액이 젤리롤 내부로 스며드는 함침 효율이 일정하게 유지되지 못하는 문제점이 있었다.
However, conventionally, the airtightness is not maintained in the pressure chamber for performing the pressurization process, so that the impregnation efficiency in which the electrolyte penetrates into the jelly roll can not be maintained constant.

등록특허공보 10-1121094 (등록일자: 2012년 02월 21일)Patent Registration No. 10-1121094 (registered on Feb. 21, 2012)

본 발명은 이차전지를 가압하는 가압챔버의 누설을 감지할 수 있는 가압장치를 제공하는 데 목적이 있다.
An object of the present invention is to provide a pressure device capable of detecting leakage of a pressure chamber for pressing a secondary battery.

본 발명인 누설감지 가능한 이차전지용 가압장치는, 전해액이 주입된 이차전지를 수용할 수 있는 가압챔버; 상기 가압챔버와 연결되며 상기 가압챔버 내부로 기체를 공급하여 상기 가압챔버를 가압하는 가압부; 상기 가압챔버와 연결되며 상기 가압챔버 내부의 기체를 배출시키는 벤트부; 상기 가압부 및 상기 벤트부에 각각 연결되어 상기 가압부 및 상기 벤트부의 압력을 측정하는 압력측정부;를 포함하고, 상기 압력측정부에서 측정된 상기 가압부 및 상기 벤트부의 압력차를 비교하여 상기 가압챔버의 누설 여부를 판독할 수 있는 것을 특징으로 한다.A leak detecting device for a secondary battery according to the present invention includes: a pressure chamber capable of accommodating a secondary battery into which an electrolyte is injected; A pressurizing unit connected to the pressurizing chamber and supplying a gas into the pressurizing chamber to pressurize the pressurizing chamber; A vent portion connected to the pressure chamber and discharging gas inside the pressure chamber; And a pressure measuring unit connected to the pressurizing unit and the vent to measure pressures of the pressurizing unit and the venting unit. The pressure measuring unit compares pressure differences of the pressurizing unit and the vent unit, It is possible to read whether or not the pressure chamber is leaked.

상기 벤트부는, 상기 가압챔버와 연결되어 상기 가압챔버의 기체가 배출되는 기체배출관; 상기 기체배출관을 개폐시키는 시간지연밸브;를 포함하고, 상기 시간지연밸브는, 상기 기체배출관 상에서 상기 압력측정부 후측에 장착되어 상기 압력측정부가 상기 기체배출관으로부터 배출되는 기체의 압력을 측정한 후에 상기 기체배출관을 개방시키는 것을 특징으로 한다.Wherein the vent portion includes: a gas discharge pipe connected to the pressure chamber to discharge gas of the pressure chamber; And a time delay valve for opening and closing the gas discharge pipe, wherein the time delay valve is mounted on the gas discharge pipe at the rear side of the pressure measurement part, and the pressure measuring part measures the pressure of the gas discharged from the gas discharge pipe, And the gas discharge pipe is opened.

상기 가압부는, 상기 가압챔버와 연결되고 상기 가압챔버 내부로 기체를 공급하는 기체공급관; 상기 기체공급관에 연결되고 상기 가압챔버에 기체가 공급되도록 가압하는 가압펌프를 포함하는 것을 특징으로 한다.The pressurizing portion includes a gas supply pipe connected to the pressurizing chamber and supplying gas into the pressurizing chamber; And a pressurizing pump which is connected to the gas supply pipe and pressurizes the pressurizing chamber so that gas is supplied to the pressurizing chamber.

상기 벤트부는, 상기 배출관에 연결되고 상기 가압챔버로부터 기체가 원활하게 배출될 수 있도록 유도하는 배출펌프를 더 포함하는 것을 특징으로 한다.
The vent portion may further include a discharge pump connected to the discharge pipe and guiding the gas to be smoothly discharged from the pressure chamber.

본 발명인 누설감지 가능한 이차전지용 가압장치는, 이차전지의 전해액 함침률을 일정하게 유지시킬 수 있는 기술적 효과가 있다.The leak detecting device for a secondary battery according to the present invention has a technical effect that the electrolyte impregnation rate of the secondary battery can be kept constant.

그리고 이에 따라 가압챔버 내부의 기밀이 유지될 수 있어 이차전지의 전해액 함침률이 증가될 수 있는 기술적 효과가 있다.
Therefore, there is a technical effect that the airtightness of the inside of the pressure chamber can be maintained and the electrolyte impregnation rate of the secondary battery can be increased.

[도 1]은 이차전지 다수개가 캐리어 상에 수납된 상태를 나타낸 도면이다.
[도 2]는 본 발명인 가압장치의 구조를 개략적으로 나타낸 도면이다.
[도 3]은 [도 2]에 도시된 A부분을 확대한 도면이다.1 is a view showing a state in which a plurality of secondary batteries are housed on a carrier.
[Fig. 2] is a view schematically showing a structure of a pressurizing apparatus of the present invention.
3 is an enlarged view of a portion A shown in Fig. 2; Fig.

이하에서는, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 본 발명을 용이하게 실시할 수 있도록 하기 위하여, 본 발명의 바람직한 실시 예들에 관하여 첨부된 도면을 참조하여 상세히 설명하기로 한다.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily carry out the present invention.

먼저 [도 1] 및 [도 2]에서와 같이, 이차전지(B) 상측에는 이차전지(B) 내부로 전해액을 원활하게 주입시키기 위한 호퍼(10)가 장착되어 있으며, 호퍼(10)에는 전해액이 통과할 수 있는 호퍼주입구(10a)가 형성되어 있다. 호퍼주입구(10a)를 통해 전해액(B1)이 주입된 이차전지(B)는 이차전지(B) 내부에 장착된 젤리롤(미도시)에 전해액(11)에 고르게 스며들 수 있도록 가압 및 진공과정을 거치게 된다.A hopper 10 for smoothly injecting an electrolyte solution into the secondary battery B is mounted on the upper side of the secondary battery B as shown in FIGS. 1 and 2, and the hopper 10 is provided with an electrolyte A hopper inlet 10a through which a hopper can pass can be formed. The secondary battery B in which the electrolyte B1 is injected through the hopper inlet 10a is supplied to the jelly roll (not shown) mounted in the secondary battery B by a pressure and vacuum process .

그리고 이러한 가압진공과정의 효율을 높이기 위해서 다수개의 이차전지(B)를 캐리어(20) 상에 수납시켜 가압진공과정을 수행할 수 있다.
In order to increase the efficiency of the pressure vacuum process, a plurality of secondary batteries B may be accommodated on the carrier 20 to perform a pressure vacuum process.

전술된 가압진공과정을 수행하기 위해서, 본 발명은 가압챔버(100), 가압부(200), 벤트부(300), 압력측정부(400) 그리고 제어부를 포함한다.In order to perform the above-described pressure vacuum process, the present invention includes a pressure chamber 100, a pressure unit 200, a vent unit 300, a pressure measurement unit 400, and a control unit.

그 중 가압챔버(100)는 이차전지(B)를 수용할 수 있고 내부 기밀이 유지될 수 있는 수용 함체이다. 이러한 가압챔버(100)는 정육면체 또는 돔 형태 등 다양한 형태가 적용될 수 있으며, 상부챔버와 하부챔버로 분리되어 제작될 수 있다. 이 경우 상부챔버와 하부챔버 사이에는 기밀을 유지하기 위해 실링부재가 장착될 수 있으며, 상부챔버와 하부챔버를 분리 또는 연결시키기 위한 별도의 승강장치가 적용될 수도 있다.
The pressure chamber 100 is an accommodating enclosure capable of accommodating the secondary battery B and capable of maintaining the internal airtightness. The pressure chamber 100 may have various shapes such as a cube shape or a dome shape, and may be manufactured by separating the upper chamber and the lower chamber. In this case, a sealing member may be mounted between the upper chamber and the lower chamber to maintain airtightness, and a separate platform for separating or connecting the upper chamber and the lower chamber may be applied.

전술된 가압챔버(100)에는 가압부(200)가 연결된다.The pressurizing unit 200 is connected to the above-described pressurizing chamber 100.

가압부(200)는 가압챔버(100) 내부에 기체를 공급하여 가압챔버(100) 내부를 가압하는 기능을 갖는 것으로, 가압펌프(210) 및 기체공급관(220)을 포함한다.The pressurizing unit 200 includes a pressurizing pump 210 and a gas supply pipe 220. The pressurizing unit 200 has a function of supplying gas into the pressurizing chamber 100 to pressurize the inside of the pressurizing chamber 100.

상기 가압펌프(210)는 기체를 이용하여 가압챔버(100)상에 일정 압력을 가하며, 가압펌프(210)에 의해 기체는 기체공급관(220)을 통해 가압챔버(100) 내부로 유입된다. 기체공급관(220) 상에는 별도의 개폐밸브(미도시)가 장착되어 가압부(200)를 제어하게 할 수 있다. The pressurizing pump 210 applies a predetermined pressure to the pressurizing chamber 100 using a gas and the gas is introduced into the pressurizing chamber 100 through the gas supply pipe 220 by the pressurizing pump 210. A separate on-off valve (not shown) may be mounted on the gas supply pipe 220 to control the pressurization unit 200.

그리고 가압챔버(100)에 공급되는 기체는 불활성기체를 적용하여 이차전지가 기체와의 화학적 반응이 일어나지 않고 안정적인 가압이 이루어지도록 하는 것이 바람직하다.
The gas supplied to the pressurizing chamber 100 is preferably an inert gas so that the secondary battery can be stably pressurized without causing a chemical reaction with the gas.

전술된 가압부(200)에 의해 가압된 가압챔버(100)는 벤트부(300)에 의해 가압상태가 해제된다.The pressurized state of the pressurizing chamber 100 pressed by the pressurizing section 200 is released by the vent section 300. [

구체적으로 벤트부(300)는 가압된 상태의 가압챔버(100)로부터 기체를 배출시켜 가압챔버(100)를 대기압 상태보다 더 낮은 기압상태가 되도록 하며, 배출펌프(310), 기체배출관(320), 시간지연밸브(330)를 포함한다.Specifically, the vent portion 300 discharges the gas from the pressurized chamber 100 to bring the pressure chamber 100 into a lower air pressure than the atmospheric pressure, and the discharge pump 310, the gas discharge pipe 320, , And a time delay valve (330).

배출펌프(310)는 기체배출관(320)을 통해 가압챔버(100)와 연결되어 가압챔버(100) 내부의 기체가 외부로 배출되도록 한다. 그리고 시간지연밸브(330)는 기체배출관(320) 상에 장착되어 기체배출관(320)의 개폐를 제어할 수 있다.The discharge pump 310 is connected to the pressurizing chamber 100 through the gas discharge pipe 320 so that the gas inside the pressurizing chamber 100 is discharged to the outside. The time delay valve 330 may be mounted on the gas discharge pipe 320 to control opening and closing of the gas discharge pipe 320.

그리고 이러한 시간지연밸브(330)는, 기체배출관(320) 상에서 후설되는 배출압력측정부(420)보다 후측에 장착되어 배출되는 기체가 배출압력측정부(420)를 통과한 후 시간지연밸브(330)를 통과하게 된다.The time delay valve 330 is installed on the rear side of the discharge pressure measuring unit 420 and is disposed on the gas discharge pipe 320. The gas discharged from the time delay valve 330 passes through the discharge pressure measuring unit 420, ).

이 때, 시간지연밸브(330)는 별도의 타이머가 장착되거나 후술되는 제어부의 제어에 따라 기체배출관(320)을 개폐시키는 시간이 조절될 수 있다.
At this time, the time delay valve 330 may be equipped with a timer or the time for opening and closing the gas discharge pipe 320 may be controlled according to the control of a control unit described later.

전술된 가압부(200) 및 벤트부(300)에는 압력측정부(400)가 연결된다.The pressure measuring unit 400 is connected to the pressurizing unit 200 and the venting unit 300 described above.

구체적으로 압력측정부(400)는 가압부(200)에서 가압챔버(100)를 가압한 압력을 측정하는 가압력측정부(410)와, 벤트부(300)로부터 배출되는 기체의 압력을 측정하는 배출압력측정부(420)를 포함한다.More specifically, the pressure measuring unit 400 includes a pressing force measuring unit 410 for measuring a pressure applied to the pressing chamber 100 by the pressing unit 200, a discharge measuring unit 410 for measuring the pressure of the gas discharged from the venting unit 300, And a pressure measuring unit 420.

그 중 가압력측정부(410)는 기체공급관(220) 상에 장착되어 기체공급관(220) 내부를 통과하는 기체의 압력 측정하고, 배출압력측정부(420)는 기체배출관(320) 상에 장착되어 기체배출관(320) 내부를 통과하는 기체의 압력을 측정한다.The pressing force measuring unit 410 is mounted on the gas supply pipe 220 to measure the pressure of the gas passing through the gas supply pipe 220 and the discharge pressure measuring unit 420 is mounted on the gas discharge pipe 320 The pressure of the gas passing through the gas discharge pipe 320 is measured.

그리고 이렇게 측정된 압력은 제어부로 송신된다.And the measured pressure is transmitted to the control unit.

제어부는 본 발명인 가압장치의 운전을 제어하는 기능을 갖는 것으로, 가압력측정부(410)와 배출압력측정부(420)로부터 수신된 압력 수치를 비교하여 가압력보다 배출압력이 클 경우에는 가압챔버(100) 내부의 누설이 발생하였음을 감지한다.The control unit has a function of controlling the operation of the pressurizing apparatus according to the present invention and compares the pressure values received from the pressurizing force measuring unit 410 and the discharge pressure measuring unit 420. When the discharge pressure is greater than the pressurizing force, ) Is detected.

그리고 제어부는 배출압력측정부(420)가 배출압력을 측정한 후에 시간지연밸브(330)를 개방하도록 제어할 수 있으며, 도시하지는 않았으나 가압펌프(210) 및 배출펌프(310)의 운전도 제어할 수 있다.
The control unit may control the discharge pressure measuring unit 420 to open the time delay valve 330 after measuring the discharge pressure and control the operation of the pressurizing pump 210 and the discharge pump 310 .

이하에서는 본 발명인 누설감지 가능한 이차전지용 가압장치의 작용 및 효과에 대해서 설명한다.Hereinafter, the operation and effect of the leak detecting device for a secondary battery according to the present invention will be described.

전해액(11)이 주입된 이차전지(B)는 캐리어(20)에 적재된 후 가압챔버(100) 내부에 수용된다. 이 상태에서 전해액(11)은 이차전지(B) 내부에 전체적으로 스며들지 못하고 일부분에만 집중되어 있는 상태이다. ([도 2] 참조) The secondary battery B in which the electrolyte 11 is injected is loaded in the carrier 20 and then accommodated in the pressure chamber 100. In this state, the electrolytic solution 11 is not entirely impregnated in the secondary battery B, but is concentrated only in a part thereof. (See Fig. 2)

이후 가압챔버(100)의 개방된 부분을 폐쇄시킨 상태에서 가압펌프(210)를 가동시켜 가압챔버(100) 내부로 기체를 공급함으로써 가압챔버(100)를 가압한다. 그리고 가압력측정부(410)에 의해 가압챔버(100) 내부로 공급되는 기체의 압력을 측정한다.Then, the pressurizing chamber 210 is operated while the opened portion of the pressurizing chamber 100 is closed to pressurize the pressurizing chamber 100 by supplying gas into the pressurizing chamber 100. The pressure of the gas supplied into the pressurizing chamber 100 is measured by the pressing force measuring unit 410.

가압부(200)의 가압력에 의해서 이차전지(B)의 일부분에 집중되어 있던 전해액(11)은 젤리롤에 스며들게 된다.The electrolytic solution 11 concentrated in a part of the secondary battery B is impregnated into the jelly roll by the pressing force of the pressing part 200. [

그 후, 다시 배출펌프(310)를 가동시켜 가압챔버(100) 내부를 대기압 상태로 감압시킨다. 이 때, 제어부는 배출압력측정부(420)의 배출압력 측정이 완료되어 그 수치를 전송받은 후에 시간지연밸브(330)를 작동시켜 기체배출관(320)이 개방되도록 한다.Thereafter, the discharge pump 310 is operated again to depressurize the inside of the pressure chamber 100 to an atmospheric pressure state. At this time, the control unit operates the time delay valve 330 to open the gas discharge pipe 320 after the measurement of the discharge pressure of the discharge pressure measuring unit 420 is completed and the measured value is transmitted.

이와 같이 시간지연밸브(330)의 개방 시점을 제어함으로써, 배출압력측정부(420)는 배출되는 압력의 정확한 수치를 측정할 수 있다.By controlling the opening timing of the time delay valve 330, the discharge pressure measuring unit 420 can measure an accurate value of the discharged pressure.

제어부는 가압력과 배출압력 정보를 수신받은 후, 양 수치를 대비하여 가압력보다 배출압력이 작을 경우에는 가압챔버(100) 상에 누설이 있다는 것을 간접적으로 판독할 수 있다.The control unit can indirectly read that there is leakage on the pressure chamber 100 when the discharge pressure is smaller than the pressing force after receiving the pressing force and the discharge pressure information.

따라서 가압챔버(100) 내부의 누설 시 기미를 유지할 수 있도록 조치를 취할 수 있으며, 이에 따라 이차전지의 전해액 함침 효율도 일정하게 유지될 수 있다.
Therefore, measures can be taken to maintain the stain in the inside of the pressurizing chamber 100, so that the electrolyte impregnation efficiency of the secondary battery can be kept constant.

이상에서 본 발명이 구체적인 구성요소 등과 같은 특정 사항들과 한정된 실시 예 및 도면에 의해 설명되었으나, 이는 본 발명의 보다 전반적인 이해를 돕기 위해서 제공된 것일 뿐, 본 발명이 상기 실시 예들에 한정되는 것은 아니며, 본 발명이 속하는 기술분야에서 통상적인 지식을 가진 자라면 이러한 기재로부터 다양한 수정 및 변형을 꾀할 수 있다.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Those skilled in the art will appreciate that various modifications and changes may be made thereto without departing from the scope of the present invention.

10: 호퍼 10a: 호퍼주입구
20: 캐리어 100: 가압챔버
200: 가압부 210: 가압펌프
220: 기체공급관 300: 벤트부
310: 배출펌프 320: 기체배출관
330: 지간지연밸브 400: 압력측정부
410: 가압력측정부 420: 배출압력측정부
B: 이차전지10: hopper 10a: hopper inlet
20: carrier 100: pressure chamber
200: pressurizing portion 210: pressurizing pump
220: gas supply pipe 300: vent part
310: exhaust pump 320: gas discharge pipe
330: delayed delay valve 400: pressure measuring part
410: pressing force measuring unit 420: discharge pressure measuring unit
B: Secondary battery

Claims (4)

전해액이 주입된 이차전지를 수용할 수 있는 가압챔버;
상기 가압챔버와 연결되며 상기 가압챔버 내부로 기체를 공급하여 상기 가압챔버를 가압하는 가압부;
상기 가압챔버와 연결되며 상기 가압챔버 내부의 기체를 배출시키는 벤트부;
상기 가압부 및 상기 벤트부에 각각 연결되어 상기 가압부 및 상기 벤트부의 압력을 측정하는 압력측정부;
를 포함하고,
상기 압력측정부에서 측정된 상기 가압부 및 상기 벤트부의 압력차를 비교하여 상기 가압챔버의 누설 여부를 판독할 수 있는
누설감지 가능한 이차전지용 가압장치.
A pressure chamber capable of accommodating a secondary battery into which an electrolyte is injected;
A pressurizing unit connected to the pressurizing chamber and supplying a gas into the pressurizing chamber to pressurize the pressurizing chamber;
A vent portion connected to the pressure chamber and discharging gas inside the pressure chamber;
A pressure measuring unit connected to the pressurizing unit and the vent unit to measure pressures of the pressurizing unit and the vent unit, respectively;
Lt; / RTI >
The pressure measuring unit may compare the pressure difference between the pressurizing unit and the vent unit to detect whether the pressure chamber is leaked or not
A pressurizing device for a secondary battery capable of detecting leakage.
제1항에서,
상기 벤트부는,
상기 가압챔버와 연결되어 상기 가압챔버의 기체가 배출되는 기체배출관;
상기 기체배출관을 개폐시키는 시간지연밸브;
를 포함하고,
상기 시간지연밸브는,
상기 기체배출관 상에서 상기 압력측정부 후측에 장착되어 상기 압력측정부가 상기 기체배출관으로부터 배출되는 기체의 압력을 측정한 후에 상기 기체배출관을 개방시키는
누설감지 가능한 이차전지용 가압장치.
The method of claim 1,
The vent portion
A gas discharge pipe connected to the pressure chamber and discharging gas of the pressure chamber;
A time delay valve for opening / closing the gas discharge pipe;
Lt; / RTI >
Wherein the time delay valve comprises:
The pressure measuring unit is mounted on the gas discharge pipe at the rear side of the pressure measuring unit and measures the pressure of the gas discharged from the gas discharge pipe,
A pressurizing device for a secondary battery capable of detecting leakage.
제1항 또는 제2항에서,
상기 가압부는,
상기 가압챔버와 연결되고 상기 가압챔버 내부로 기체를 공급하는 기체공급관;
상기 기체공급관에 연결되고 상기 가압챔버에 기체가 공급되도록 가압하는 가압펌프를 포함하는
누설감지 가능한 이차전지용 가압장치.
3. The method according to claim 1 or 2,
The pressing portion
A gas supply pipe connected to the pressure chamber and supplying gas into the pressure chamber;
And a pressurizing pump connected to the gas supply pipe and pressurizing the pressurizing chamber to supply gas thereto
A pressurizing device for a secondary battery capable of detecting leakage.
제3항에서,
상기 벤트부는,
상기 배출관에 연결되고 상기 가압챔버로부터 기체가 원활하게 배출될 수 있도록 유도하는 배출펌프를 더 포함하는
누설감지 가능한 이차전지용 가압장치.4. The method of claim 3,
The vent portion
And a discharge pump connected to the discharge pipe and guiding the gas to be smoothly discharged from the pressure chamber
A pressurizing device for a secondary battery capable of detecting leakage.
KR1020130123355A 2013-10-16 2013-10-16 Pressuring apparatus able to detecting leakage of pressuring chamber KR101848105B1 (en)

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KR20170022700A (en) * 2015-08-21 2017-03-02 주식회사 엘지화학 Impregnation inspection device for secondary battery
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