KR20120111080A - Gas analyzer for cell and gas analyzing method using the same - Google Patents

Abstract

PURPOSE: A gas analyzing device is provided to quantitatively and qualitatively analyze by collecting gas generated according to change of charging and discharging voltage and current or a battery cell or a capacitor cell, operation temperature, pressure, etc. CONSTITUTION: A gas analyzing device(10) comprises a cell(120), a chamber accepting the cell, a charging/discharging part(130) electrically connected to the cell, a gas analyzing part(150) analyzing gas discharged from the cell, and a signal processing part(200) treating data analyzed by the gas analyzing part, and the gas analyzing device comprises a chamber accepting the cell, a thermal part maintaining constant temperature in the chamber, a gas analyzing part analyzing gas discharged from the cell, and a signal processing part treating data analyzed by the gas analyzing part. [Reference numerals] (120) Cell; (134) Power part; (135) Load part; (136) Measuring part; (142) Heater; (143) Cooler; (144) Control part; (154) Gas analyzer; (158,138,148,188,168) Transmission part; (166) Vacuum pump; (176) Inert gas tank; (196) Dust collector; (200) Signal processing part; (210) Display

Description

Gas analyzer for cell and gas analysis method using it {Gas Analyzer For Cell and Gas Analyzing Method Using the Same}

The present invention relates to a gas analysis device and a gas analysis method using the same.

Typical cells and capacitors have an active material in the form of a slurry therein. For example, a battery is a cathode made of a carbon rod, an external zinc barrel is used as a cathode, and a manganese dioxide (Mn ₂ O ₃ ) powder and a graphite powder are slurry in a saturated aqueous solution of ammonium chloride (NH ₄ Cl) to form a carbon. It will surround the rod. In addition, an electric double layer capacitor (EDLC), a type of supercapacitor, which has recently been attracting attention, forms an electrostatic layer on the interface between an active carbon electrode and an organic electrolyte and accumulates electric energy using an electric double layer state as a dielectric. In this case, the principle of charge adsorption and desorption on the electric double layer at the interface between the solid electrode and the electrolyte in the slurry state is used.

Cells and capacitors form various gases by reaction between materials located therein during operation. This gas is gradually discharged to the outside in the state of being trapped by the packaging of the battery and the capacitor. However, when exposed to constant charging, discharging, or constant temperatures, gas may erupt and break the packaging or even explode.

Therefore, it is important to analyze whether gas is generated in cells and capacitors under which electrical operating conditions and environmental conditions, and what gas is generated. However, in the related art, the gas generated in the charging / discharging experiment was discharged to the outside to collect the gas, and it was difficult to collect and analyze the gas while checking the comprehensive data such as temperature, pressure, charging and discharging voltage and time. .

The present invention is to solve the above-mentioned problems of the prior art, it is possible to capture the gas generated by the change of the charge and discharge voltage and current of the battery cell or capacitor cell, the operating temperature, pressure, etc. It is one of the main objectives to provide a gas analyzer and a gas analysis method.

Gas measuring apparatus for a cell according to the present invention, the cell (Cell); A chamber for mounting the cell; A charge / discharge unit electrically charged with the cell to charge the cell or discharge the cell; A gas analyzer analyzing the gas emitted from the cell; And a signal processor configured to process data analyzed by the gas analyzer.

Gas measuring apparatus for a cell according to the present invention, the cell (Cell); A chamber for mounting the cell; A thermal unit maintaining the inside of the chamber at a constant temperature; A gas analyzer analyzing the gas emitted from the cell; And a signal processor configured to process data analyzed by the gas analyzer.

In one example, the cell is any one of a battery, a capacitor, and an EDLC.

In one example, the charging and discharging unit, a power supply unit for applying current and voltage to the cell during charging, a load unit for consuming energy stored by the cell during discharge, and the current and voltage applied to or discharged from the cell It includes a measuring unit for measuring and the transmission unit for transmitting the measured current and voltage values to the signal processing unit.

In one example, the thermal unit, a heater (heater) mounted on the chamber to heat up the chamber, a cooler (cooler) mounted on the chamber to cool the chamber, a temperature detector mounted on the cell to detect the temperature of the cell And a control unit for controlling the heater and the cooler to maintain the chamber at a desired temperature, and a transmission unit transmitting the temperature of the cell and the temperature of the chamber to the processing unit.

In an example, the apparatus may further include a vacuum unit including a valve, a vacuum pump configured to vacuum the inside of the chamber, a vacuum gauge measuring the vacuum degree inside the chamber, and a transmitter configured to transmit the measured vacuum degree to the signal processing unit.

In an example, the apparatus may further include a pressure unit including a valve, a pressure gauge measuring a pressure inside the chamber, and a transmitter configured to transmit the measured pressure value to the signal processing unit.

In one example, it includes a valve and an inert gas tank in which an inert gas is stored, and further includes an inert gas filling unit filling the inside of the chamber with the inert gas.

In an example, the apparatus may further include an exhaust unit including a valve and a dust collector configured to process and exhaust the gas inside the chamber.

In one example, the gas analyzer comprises a valve, a gas meter for measuring any one or more of the components and concentration of the gas in the chamber and a transmission unit for transmitting the measurement results of the gas meter to the signal processing unit. .

In one example, the gas meter includes at least one of an infrared gas analyzer, a gas detector, a gas chromatography analyzer, a photophotometer, a photospectrometer, a carbon monoxide analyzer, a carbon dioxide analyzer, and a hydrocarbon analyzer.

In one example, the gas meter is removable.

In one example, the gas measuring apparatus of the cell further includes a display unit for displaying a result of the signal processing unit processing.

The gas measuring method of a cell according to the present invention includes the steps of mounting a cell in a chamber and sealing the chamber, removing air inside the sealed chamber, and filling an inert gas into the chamber from which the air is removed. And performing at least one of charging and discharging the cell, and analyzing a gas inside the chamber by a gas analyzer.

The gas measuring method of a cell according to the present invention includes the steps of mounting a cell in a chamber and sealing the chamber, removing air in the sealed chamber, and filling an inert gas into the chamber from which the air is removed. And raising the inside of the chamber to a desired temperature, and analyzing a gas inside the chamber by a gas analyzer.

In one example, the filling of the inert gas into the chamber is performed by filling the pressure inside the chamber to a desired air pressure.

According to the present invention, a gas generated when the cell operates within a constant temperature and a constant pressure, and a gas generated in the cell when the temperature gradually rises may be collected and analyzed by a gas analyzer. This provides the advantage of being able to quantitatively and qualitatively analyze the gas generated in the cell with more accurate temperature, pressure, operating current and voltage data.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram which shows the outline | summary of the gas analyzer of a cell by this invention.
2 and 3 are flowcharts showing the flow of the gas analysis method of the cell according to the present invention.

Advantages and features of the present invention, and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be embodied in various different forms, and the present embodiments only make the disclosure of the present invention complete, and are common in the art to which the present invention pertains. It is provided to fully inform those skilled in the art of the scope of the invention, which is to be defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

Referring to FIG. 1, a cell 120 is mounted in the chamber 110. The chamber 110 has a structure in which a gas generated while the cell is operating or a gas generated when the cell is exposed to a constant temperature is not sealed to the outside. When the cell 120 is mounted in the chamber 110, one end 132 of the charge / discharge unit 130 in the chamber 110 may be supplied to supply power to the cell 120 or to operate and discharge the cell 120. The cell 120 is connected to one end 132 of the charge / discharge unit.

The charging and discharging unit 130 supplies power to the cells or discharges the charged cells in order to analyze the gas emitted while the cells located therein are operating. In one example, the cell 120 is electrically connected to one end 132 located inside the chamber 110, and the power supply unit 134 adjusts the voltage and / or current to charge the connected cell 120 to the cell. Is authorized. The load unit 135 discharges energy charged in the cell 120. The power supply unit 134 and the load unit 135 are driven by a switching circuit (not shown) so that only one of them is connected to the cell and operated. The measuring unit 136 measures at least one of a voltage and a current applied to the cell 120 or applied by the cell 120 while the power supply unit 134 or the load unit 135 operates, and the transmission unit 138 The measurement unit transmits the measured value to the signal processing unit.

The thermal unit 140 maintains the interior of the chamber 110 at the desired temperature. In one example, the thermal unit 140 includes a heater 142 for heating the chamber, a cooler 143 for cooling the chamber, and a temperature detector 146 for sensing a temperature of the cell 120 mounted in the chamber. And a controller 144 that controls the heater 142 to operate when the temperature detected by the temperature detector 146 is lower than the desired temperature, and to drive the cooler 143 when the temperature detected by the temperature detector 146 is higher than the desired temperature. And a transmitter 148 for transmitting the temperature detected by the signal 146 to the signal processor.

The gas analyzer 150 analyzes a gas generated when the cell 120 mounted in the chamber 110 operates while being charged and discharged or is exposed to a constant temperature atmosphere. In one example, the gas analysis unit 150 is a signal processing the results of the analysis of the valve 152, the gas analyzer 154 for analyzing the gas, and the gas analyzer 154 to control the inflow and outflow of the gas in the chamber And a transmission unit 156 for transmitting to the negative. In one example, the gas analyzer 154, by filling the gas detector into the glass tube, when the gas is sucked from one side of the tube, the gas component reacts with the detector to detect the inclusion of a specific component through discoloration, It may be a gas detection tube capable of determining the concentration of the component in accordance with the discolored length or the degree of discoloration.

In another example, the gas analyzer 154 may be an infrared gas analyzer capable of continuously analyzing the concentration of a specific component included in the gas by recording infrared intensity by shining infrared rays on the gas to be analyzed.

In another example, the gas analyzer 154 may be a photospectrophotometer that may disperse light from a light source using a prism and a diffraction grating to measure transmittance for each wavelength of a sample to be analyzed by a photoelectric transducer such as a phototube. .

In another example, the gas analyzer 154 is a gas analysis method in which a gas sample or vaporized liquid or solid sample is developed by a carrier gas in a tube uniformly filled with a suitable packing material and then passed through a gas phase to separate the components into gas components without decomposition. It may be a gas chromatography apparatus for detecting a substance in a state.

In another example, the gas analyzer 154 may be any one of a photophotometer, a carbon monoxide analyzer, a carbon dioxide analyzer, and a hydrocarbon analyzer.

In another example, the gas analyzer 154 may include at least one of an infrared gas analyzer, a gas detector tube, a gas (gas) chromatography analyzer, a photophotometer, a photospectrometer, a carbon monoxide analyzer, a carbon dioxide analyzer, and a hydrocarbon analyzer. Can be.

In one example, the gas analyzer 154 has a removable structure.

The vacuum unit 160 removes air introduced into the chamber in order to remove unnecessary reaction between the moisture contained in the air and the chemicals in the cell because the air introduced in the process of mounting the cell 120 into the chamber includes moisture. do. In one example, the vacuum unit 160 includes a valve 162 for controlling outflow of gas into the chamber, a vacuum pump 166 for forming a vacuum in the chamber, a vacuum gauge 164 for measuring the degree of vacuum in the chamber, The transmitter 168 transmits the vacuum value measured by the vacuum gauge 164 to the signal processor.

The inert gas charging unit 170 has an inert gas such as nitrogen (Nitrogen, N2) or group 18 gas helium (Helium, He), neon (Neon, Ne), argon (Argon, Ar), etc. inside the chamber 120. To charge. This is to prevent the cells mounted in the chamber 120 from reacting with air to generate gas when the cell is mounted or exposed to a constant temperature atmosphere. In one example, the inert gas filling unit 170 includes a valve 172 for controlling the outflow of gas into the chamber, and an inert gas tank 176 storing the inert gas injected therein. In one example, when inert gas is injected into the chamber, it is injected such that the pressure inside the chamber is the desired air pressure.

The pressure unit 180 measures whether the inside of the chamber reaches a desired pressure when the inert gas is injected by the inert gas filling unit 170. In one example, the pressure unit 180 transmits the valve 182, the pressure gauge 184 capable of measuring the pressure inside the chamber, and the pressure value inside the chamber measured by the pressure gauge 184 to the signal processing unit. It includes a transmission unit 188.

The exhaust unit 190 mounts the cell 120 inside the chamber 110 and then exhausts the air inside the chamber to the outside, or after the inspection of the gas generated in the cell 120 ends, the gas generated in the cell To the outside. It is not a problem when exhausting the air inside the chamber, but when exhausting the gas generated in the cell and the inert gas charged inside the chamber to the outside of the chamber, it is exhausted through the dust collector to prevent air pollution. In one example, the exhaust 190 includes a valve 192 and a dust collector 196 that filters out harmful substances to gas in the chamber chamber.

The signal processor 200 may include a transmitter 138 of the charge / discharge unit 130, a transmitter 148 of the thermal unit 140, a transmitter 158 of the gas analyzer 150, and a vacuum unit 160. The transmitter 168 receives the signal transmitted from the transmitter 188 of the pressure unit 180, processes the signal, and stores the signal. For example, when a certain voltage and current are applied to the cell 120 mounted in the chamber 110, it is possible to measure what amount of gas is generated. It is also possible to maintain a constant temperature inside the chamber and measure the gas generated in the cell to determine what amount of gas is generated. In one example, the signal processing unit 200 is connected to a display 210 that visually shows the processed signal.

A gas measuring method using the gas measuring instrument having the above-described configuration will be described with reference to FIGS. 2 and 3.

2 and 3, the cell 120 is mounted on the chamber 110 (S100 and S200). Since the chamber is sealed as described above, gas generated in the cell during the inspection does not flow out.

The air inside the chamber is exhausted (S110, S210). The air introduced into the chamber 110 in the process of mounting the cell 120 into the chamber 110 contains a large amount of moisture. Therefore, in order to prevent the material of the cell from reacting with the moisture of the air in the process of heating the chamber or operating the cell, the air inside the chamber is exhausted. In one example, the exhaust may be performed using the exhaust unit 190 or may be performed using the vacuum unit 160.

The inert gas is filled into the chamber (S120, S220). The inside of the chamber is filled with an inert gas to reduce the reaction between the material inside the cell 110 mounted on the chamber 120 and the gas outside the cell. When filling the chamber interior with inert gas, the chamber interior is filled to the desired pressure. The pressure inside the chamber is measured by the pressure unit 180, and the measured value is transmitted to the signal processing unit 200 and displayed on the display 210. In one example, the inert gas charged into the chamber may be nitrogen (Nitrogen, N2), or helium (Helium, He), neon (Neon, Ne), argon (Argon, Ar), and the like, which are Group 18 gases. In one example, the process of filling the inert gas into the chamber is performed by using the inert gas unit 170 and the pressure unit 180.

After maintaining the inside of the chamber 110 in which the cell 120 is mounted at a constant pressure, the cell is operated by charging or discharging the cell (S140). Or, if you want to check the gas generated when the cell is exposed to a constant temperature, the cell is maintained at the desired temperature (S240). In one example, the charging unit 134 applies a desired current and / or voltage to the cell, and the load unit 135 discharges energy stored in the cell. The current and voltage flowing out or flowing while the cell is operating while charging or discharging are measured by the measuring unit 136 and transmitted by the transmitting unit 138 to the signal processing unit 200. In one example,

In another example, the temperature of the cell is detected by the temperature detector 146, and the control unit 144 drives the heater 142 to heat it when the detected temperature is lower than the desired temperature, or the detected temperature is the target temperature. When the temperature is higher than that of the temperature, the cooler 143 is driven and cooled to maintain the cell at a desired temperature.

The cells are charged or discharged for a desired time or exposed to a desired temperature for a certain time to trap the gas released by the cell in the chamber.

After a certain time, the gas analyzer 152 analyzes the gas in the chamber. In one example, the gas in the chamber is analyzed by the gas analyzer 154 to analyze the components of the gas.

After the analysis of the gas is finished, the gas collected in the chamber is exhausted through the exhaust unit 190. In one example, the exhaust unit 190 discharges the gas to the outside through the dust collector 196 may prevent the air pollution.

According to the gas analysis method according to the present invention having the above-described configuration, there is provided an advantage that it is possible to grasp with accurate data what kind of gas is generated under a specific operating condition and a specific temperature range.

While the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, but can be manufactured in various forms, and the general knowledge in the art to which the present invention pertains. Those skilled in the art can understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential features of the present invention. Therefore, the above-described embodiments should be understood as illustrative in all respects, and the scope of the present invention should be determined based on the claims below.

10: gas analysis device 110: chamber
120: cell 130: charge and discharge unit
132: one end of the charging and discharging unit 134: power supply unit
135: load portion 136: measurement portion
138, 148, 158, 168, and 188: transmission unit 140: vacuum unit
142: heater 143: cooler
144: control unit 150: gas analysis unit
152, 162, 172, 182, 192: valve 154: gas analyzer
156: transmission unit 160: vacuum unit
164: vacuum gauge 166: vacuum pump
170: inert gas charging part 176: inert gas tank
180: pressure unit 188: transmission unit
190: exhaust unit 196: dust collector
S100 to S170 and S200 to S270: each step of the gas analysis method

Claims (16)

Cell;
A chamber for mounting the cell;
A charge / discharge unit electrically charged with the cell to charge the cell or discharge the cell;
A gas analyzer analyzing the gas emitted from the cell; And
And a signal processor configured to process data analyzed by the gas analyzer. Cell;
A chamber for mounting the cell;
A thermal unit maintaining the inside of the chamber at a constant temperature;
A gas analyzer analyzing the gas emitted from the cell; And
And a signal processor configured to process data analyzed by the gas analyzer. The method of claim 1,
And said cell is any one of a cell, a capacitor, and an EDLC. The method of claim 1,
The charging and discharging unit,
A power supply unit applying current and voltage to the cell during charging, a load unit consuming energy stored by the cell during discharge, a measuring unit measuring current and voltage applied to or discharged from the cell and the measured current And a transmission unit which transmits a voltage value to the signal processing unit. The method of claim 2,
The thermal unit includes a heater mounted on the chamber and heating the chamber, a cooler mounted on the chamber and cooling the chamber, a temperature detector mounted on the cell and detecting the temperature of the cell, and the heater. And a controller configured to control a cooler to maintain the chamber at a desired temperature, and a transmitter configured to transmit the temperature of the cell and the temperature of the chamber to the processing unit. The method of claim 1,
And a vacuum unit including a valve, a vacuum pump configured to vacuum the inside of the chamber, a vacuum gauge for measuring the vacuum degree inside the chamber, and a vacuum unit including the measured vacuum degree to the signal processing unit. . The method of claim 1,
And a pressure unit including a valve, a pressure gauge for measuring the pressure inside the chamber, and a transmission unit for transmitting the measured pressure value to the signal processing unit. The method of claim 1,
And an inert gas tank including a valve and an inert gas tank in which an inert gas is stored, and filling the inside of the chamber with the inert gas. The method of claim 1,
And an exhaust unit including a valve and a dust collector for treating and evacuating the gas inside the chamber. The method of claim 1,
The gas analyzer,
And a valve, a gas meter for measuring any one or more of components and concentrations of the gas in the chamber, and a transmitter for transmitting the measurement result of the gas meter to the signal processing unit. The method of claim 10,
The gas measuring device, the gas measuring device of the cell including any one or more of infrared gas analyzer, gas detector, gas chromatography analyzer, photophotometer, photospectrometer, carbon monoxide analyzer, carbon dioxide analyzer, hydrocarbon analyzer. The method of claim 10,
The gas measuring device is a gas measuring device of a cell that can be detached. The method of claim 1,
The gas measuring device of the cell,
And a display unit which displays a result of the signal processing unit processing. Mounting the cell in a chamber and sealing the chamber;
Removing air inside the sealed chamber;
Filling an inert gas into the chamber from which the air is removed;
Performing any one or more of charging and discharging the cell;
A gas analysis method of a cell comprising the step of analyzing the gas inside the chamber with a gas analyzer. Mounting a cell in the chamber and sealing the chamber;
Removing air inside the sealed chamber;
Filling an inert gas into the chamber from which the air is removed;
Heating the chamber to a desired temperature;
A gas analysis method of a cell comprising the step of analyzing the gas inside the chamber with a gas analyzer. The method according to any one of claims 14 and 15,
Filling the inert gas into the chamber,
Gas analysis method of the cell is carried out by filling the pressure in the chamber to the desired air pressure.

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