JP6252965B2 - Triode cell for testing and Bipolar cell for testing - Google Patents

Description

  The present invention relates to a primary battery such as a manganese battery, an alkaline battery, a lithium battery, a lead storage battery, a nickel-cadmium battery, and the like used in electronic equipment such as a personal computer, a mobile phone, and a digital camera enclosed in a sealed container. , Nickel-hydrogen batteries, secondary batteries such as lithium-ion batteries, double layer capacitors, capacitors, etc. (hereinafter simply referred to as “storage batteries”).

More particularly, in various research institutions including universities to evaluate the performance of the contents, such as electrode materials in R & D that is enclosed inside the battery (positive electrode, separator, negative electrode, an electrolytic solution) Things have been done.
For this purpose, the present invention encloses the contents in a sealed container called a cell, electrically connects a charging / discharging device to the cell, and repeatedly charges and discharges the electrode body enclosed in the cell, Evaluate the performance required as a storage battery, such as its charge / discharge characteristics, temperature characteristics, and safety characteristics as electrode materials used in storage batteries.For example, charge / discharge is performed by measuring three electrodes using a reference electrode. When performed, the present invention relates to a test triode cell for measuring the potential of the positive electrode and the potential of the negative electrode with respect to the reference electrode.

  In addition, the present invention can be used in the same manner as a conventional bipolar cell for testing by using a bipolar cell for testing, and in order to evaluate the performance of such electrode materials under research and development, for example, When charging / discharging, basic measurement such as charging / discharging characteristics, temperature measurement inside the cell by thermocouple, pressure measurement inside the cell by pressure gauge, collection of gas generated inside the cell by gas pipe, etc. The present invention relates to a test bipolar cell for carrying out a measurement test.

  Conventionally, a storage battery that can be repeatedly charged and discharged has been used as a power source for electronic devices such as notebook computers, mobile phones, and PDAs (Personal Digital Assistance).

  Examples of such a storage battery include an aqueous battery such as a nickel hydride secondary battery, a nonaqueous battery such as a lithium ion secondary battery, a capacitor such as an electric double layer capacitor, and a capacitor.

  In recent years, in such storage batteries that can be repeatedly charged and discharged, there is an increasing demand for reduction in size and weight and increase in capacity.

  In the research and development of such a storage battery, it is important to know what temperature, concentration, voltage, pressure, and behavior of the generated gas are occurring inside the actual storage battery. For the purpose of observing the change of the electrode in the storage battery during the charge / discharge test and the purpose of confirming the safety of the storage battery, various researches and tests are required.

  Conventionally, Patent Literature 1 (Japanese Patent No. 3731142) has been proposed as such a test bipolar cell.

30 is a perspective view showing a general structure of a conventional test bipolar cell, FIG. 31 is a cross-sectional view of the test bipolar cell of FIG. 30 taken along line JJ, and FIG. FIG. 33 to FIG. 34 are exploded perspective views of the conventional test bipolar cell of FIG.

As shown in FIGS. 30 to 32, the conventional test bipolar cell 100 includes a container body 102 having a substantially cup shape . The container main body 102 includes a housing portion 104 that is recessed in a cylindrical shape, and is configured to house the contents of the storage battery in the housing portion 104.

The test bipolar electrode 100 accommodates the contents of a storage battery such as one electrode 106, the separator 116, the other electrode 124, and an electrolytic solution, which will be described later, when a measurement test is performed. Below, the case where the content of the said storage battery is accommodated in the bipolar cell 100 for a test which comprises an accommodation container is demonstrated .

  In addition, the container main body 102 is comprised from the metal which has electrical conductivity, such as stainless steel, such as SUS304, for example. The container body 102 is electrically connected to one disk-shaped electrode 106, for example, a negative electrode.

As shown in FIGS. 33 to 34, the container body 102 is formed with an annular flange 108 at the top, and the flanges 108 are spaced apart from each other at a central angle of 90 °. An embedded bolt 110 is erected. The embedded bolt 110 is made of a metal having electrical conductivity such as stainless steel such as SUS304.
An insulating washer 110b made of an insulating material such as a fluororesin such as PTFE resin is attached to the outer periphery of the base end portion of the embedded bolt 110.

  Further, on the inner peripheral side of the flange 108, for example, an O-ring inner seal member 112 made of a fluororesin such as PTFE resin is mounted.

  Further, as shown in FIGS. 33 to 34, a concave guide groove 114 for positioning and accommodating an insulating guide member 118 described later and an electrode groove 105 are formed at the bottom of the accommodating portion 104 of the container main body 102. For example, one electrode 106 made of a negative electrode is accommodated in the concave electrode groove 105.

As shown in FIGS. 31 to 32 , a gap 101 is provided between the inner peripheral wall of the accommodating portion 104 of the container main body 102 and the outer peripheral side wall 118 a of the insulating guide member 118. 101 , the insulating guide member 118 can be disposed in the guide groove 114 using tweezers or the like.

As shown in FIGS. 33 to 34, the upper surface of the one electrode 106 is made of a synthetic resin such as a polyolefin resin such as polyethylene or polypropylene, and a circle made of a porous insulating film to which ions can move. A plate-shaped separator 116 is interposed and stacked.

  In addition, a substantially cylindrical insulating guide member 118 made of an insulating material such as polypropylene resin is disposed on the upper surface of the separator 116 so as to be positioned on the outer periphery of the one electrode 106.

  The insulating guide member 118 is formed with an annular liquid reservoir groove 120 on the upper side, and a plurality of liquid injection holes 122 penetrating vertically are spaced apart from each other by a fixed central angle. Is formed.

  The other disc-shaped electrode 124, for example, a positive electrode is disposed on the inner peripheral side of the insulating guide member 118.

  On the upper surface of the other electrode 124, as shown in FIG. 32, an electrode pressing member 126 is disposed so as to be fitted to the inner peripheral side of the insulating guide member 118. The electrode pressing member 126 includes a disk-shaped pressing member main body 128 and a small-diameter spring support portion 130 erected from the center of the pressing member main body 128. A compression spring 132 is interposed on the outer periphery of the spring support portion 130 in a compressed state.

  On the upper surfaces of the spring support portion 130 and the compression spring 132 of the pressing member main body 128, a substantially disc-shaped lid member 134 that closes the opening 102a of the container main body 102 in a detachable manner is disposed.

  The pressing member main body 128, the compression spring 132, and the lid member 134 are made of a metal having electrical conductivity such as stainless steel such as SUS304. Therefore, the lid member 134 is electrically connected to the other electrode 124 accommodated in the accommodating portion 104 of the container main body 102 via the spring support portion 130 and the compression spring 132 of the pressing member main body 128.

  Further, as shown in FIGS. 30 to 31 and FIGS. 33 to 34, four fastening holes 136 are formed in the lid member 134 at positions corresponding to the four embedded bolts 110 of the container body 102. ing. A cylindrical insulating bush 138 made of an insulating material such as a fluororesin such as PTFE resin is attached to the inner periphery of the fastening hole 136.

  Furthermore, as shown in FIG. 31, an O-ring-shaped outer seal member 140 made of, for example, a fluororesin such as PTFE resin is attached to the lower surface of the lid member 134.

Then, for example, an electrolytic solution containing a lithium salt such as LiPF ₆ is used as an electrolyte in the accommodating portion 104 of the container main body 102, that is, in the groove portion 120 for storing the liquid in the insulating guide member 118, using a syringe or the like. Inject. As a result, the one electrode 106, the separator 116, and the other electrode 124 accommodated in the accommodating portion 104 of the container main body 102 are electrolyzed through the groove portion 120 and the liquid injection hole 122 for storing the insulating guide member 118. It will be in the state immersed in the liquid.

  As a procedure for injecting the electrolytic solution, one electrode 106, the separator 116, and the other electrode 124 that are already impregnated with the electrolytic solution may be used. Alternatively, the compression spring 132 and the electrode pressing member 126 may be removed and liquid injected from the inner peripheral side of the insulating guide member 118 in a state where the insulating guide member 118 is accommodated in the accommodating portion 104 of the container body 102.

  Thereafter, the embedded bolt 110 of the container body 102 is inserted into the inner periphery of the insulating bushing 138 of the fastening hole 136 of the lid member 134 so that the upper part protrudes from the upper surface of the container body 102, and the protruding screw portion 110a is fastened with a fastening nut 142 made of a metal having electrical conductivity such as stainless steel such as SUS304. Thereby, the lid member 134 is closed so that the opening 102a of the container main body 102 is detachable.

  When the lid member 134 is closed, the compression spring 132 is compressed, and the contact surfaces of the stacked members are in pressure contact with each other by the compression spring 132. For this reason, the electrical contact resistance between each contact surface falls, and it will be in the state which can be charged / discharged as a storage battery.

  Further, as shown in FIGS. 30 and 33 to 34, the container main body 102 has terminal screws 144 formed on the lower surface of the annular flange 108, and the terminal screws 146 on the upper surface of the lid member 134. Is formed.

  Then, the terminal screw 144 and the terminal screw 146 are connected to a charging / discharging device such as a potentiostat (not shown) through a wiring cable, and a charging / discharging test is performed. Has been done.

Japanese Patent No. 3731142

  By the way, in the research and development of electrode materials used in such storage batteries, in order to evaluate the performance of the electrode materials under research and development, for example, charging and discharging are performed by a third electrode measurement method using a reference electrode. In this case, a test tripolar cell for measuring the potential of the positive electrode and the potential of the negative electrode with respect to the reference electrode has been developed.

  FIG. 35 is an exploded perspective view showing the structure of such a conventional test triode cell. In addition, about the same structural member as the structural member shown in the said FIGS. 30-34, detailed description is abbreviate | omitted about the material.

As shown in FIG. 35, the conventional test triode cell 200 is sandwiched between a substantially disc-shaped lower main body 202, a substantially disc-shaped upper main body 204, and the lower main body 202 and the upper main body 204. A substantially cylindrical reference electrode main body 206 is provided.

  For example, a ring-shaped reference electrode 210 made of lithium metal is accommodated in the accommodating portion 208 formed by the lower main body 202, the upper main body 204, and the inner periphery of the reference electrode main body 206. Disc-shaped lower separator 212 and upper separator 214 are stacked above and below reference electrode 210, respectively.

  Under the lower separator 212, for example, one disk-shaped electrode 216 made of a negative electrode is disposed, and a substantially cylindrical lower insulating guide member 218 is disposed on the outer periphery of the one electrode 216. ing.

  In addition, a lower electrode pressing member 220 is disposed on the lower surface of one electrode 216 so as to be fitted to the inner peripheral side of the lower insulating guide member 218. The lower electrode pressing member 220 includes a disk-shaped pressing member main body 222 and a small-diameter spring support portion 224 erected from the center of the pressing member main body 222. A lower compression spring 226 is interposed on the outer periphery of the spring support 224 in a compressed state.

  Similarly, for example, the other disk-shaped electrode 228 made of a positive electrode is disposed above the upper separator 214, and the substantially cylindrical upper insulating guide member 230 is disposed on the outer periphery of the other electrode 228. Is arranged.

  In addition, an upper electrode pressing member 232 is disposed on the upper surface of the other electrode 228 so as to be fitted to the inner peripheral side of the upper insulating guide member 230. The upper electrode pressing member 232 includes a disk-shaped pressing member main body 234 and a small-diameter spring support portion 236 erected from the center of the pressing member main body 234. An upper compression spring 238 is interposed on the outer periphery of the spring support 236 in a compressed state.

  Then, the electrolytic solution is injected, and the lower body 202, the upper body 204, and the reference electrode body 206 sandwiched between the lower body 202 and the upper body 204 are fastened with the fastening nuts 240 and 242. Thus, the test triode cell 200 is assembled.

  By connecting the terminal 244 connected to the lower body 202, the terminal 246 connected to the upper body 204, and the terminal 248 connected to the reference electrode body 206 to a test apparatus connected to a personal computer (not shown), It is configured to perform measurement such as positive and negative electrode potential measurement.

However, in such a conventional test triode cell 200, the reference electrode main body 206, the lower insulating guide member 218, the upper insulating guide member 230, the lower electrode pressing member 220, the lower compression spring 226, and the like are extra. Separate components are required, the structure is complicated, the cost is high, and the size is increased.

Further, the components of the conventional bipolar cell for testing as shown in FIGS. 30 to 34 can hardly be used, and components having a new shape (for example, shapes different from the configurations shown in FIGS. 30 to 34). The lower main body 202 and the upper main body 204) must be prepared, which lacks versatility and increases the cost.

Further, in the conventional test tripolar cell 200, component parts, which is configured from the component of the special structure in the test three-electrode cell only, which was polarize, for example, cell by thermocouple It is impossible to configure a variety of measurement tests such as measurement of internal temperature, measurement of pressure, collection of gas generated inside the cell, and measurement test for measuring the potential of positive and negative electrodes using a reference electrode. .

  In view of such a current situation, the present invention has a simple structure, a compact structure, can reduce costs, and can perform measurements such as potential measurement of positive and negative electrodes with an accurate reference electrode. An object is to provide a three-electrode cell.

  In addition, the present invention can use most of the components of the conventional test bipolar cell, eliminates the need to prepare almost new components, is versatile, and can reduce costs. The object is to provide a polar cell.

  Further, the present invention can easily perform a charge / discharge test using a conventional bipolar cell for testing by using such a triode cell for testing and easily bipolarizing it. Providing a bipolar cell for testing that can be configured to perform various types of measurement tests, such as temperature measurement inside a cell using a pair, pressure measurement inside a cell using a pressure gauge, and measurement tests such as collecting gas generated inside the cell The purpose is to do.

The present invention has been invented in order to achieve the problems and objects in the prior art as described above, and the test triode cell of the present invention is
A sealed container for testing and evaluating electrode materials used for storage batteries by three-electrode measurement,
A container main body that includes a storage unit that stores the contents of the storage battery, and is electrically connected to one of the electrodes stored in the storage unit;
A lid member that detachably closes the opening of the container body and is electrically connected to the other electrode housed in the housing portion of the container body;
One electrode and the other electrode housed in an insulated state in the housing portion of the container body ,
Wherein the one electrode and the other electrode in an insulated state, and a reference electrode disposed in said container body,
With respect to the reference electrode, a reference electrode for electrical connection member for electrically connecting, through an insulated state reference electrode through-hole formed in the lid member from the outside, removably disposed An electrical connection member for a reference electrode,
An insulating guide member disposed on the outer periphery of the one electrode and the other electrode, and containing a reference electrode;
It is characterized by providing.

  With this configuration, the reference electrode is disposed in the container body, and the reference electrode electrical connection member electrically connected to the reference electrode is connected to the reference electrode through-hole formed in the lid member. Therefore, the structure is simple and the structure is compact, and the cost can be reduced.

  In addition, it is possible to carry out accurate measurements such as positive and negative electrode potential measurements with a reference electrode through a reference electrode electrical connection member that protrudes outside through a reference electrode through hole formed in the lid member. It is.

  Also, by simply providing a reference electrode through-hole in the lid member of a conventional test bipolar cell, almost all components of the conventional test bipolar cell can be used, and it is necessary to prepare almost new components. It is rich in versatility and can reduce costs.

  Furthermore, as will be described later, using such a triode cell for testing, it is easily bipolarized, for example, measuring the temperature inside the battery with a thermocouple, measuring the pressure inside the cell, It is possible to provide a test bipolar cell that can be configured to perform various types of measurement tests such as collection of generated gas and measurement tests for positive and negative electrode potential measurement.

  With this configuration, since the reference electrode is disposed in the insulating guide member disposed on the outer periphery of the one electrode and the other electrode, the reference electrode is short-circuited with the one electrode and the other electrode. It is possible to carry out measurements such as positive and negative electrode potential measurements with an accurate reference electrode.

  In addition, the reference electrode can be compactly and easily arranged in the test triode cell, and the conventional insulating guide member can be used for holding the reference electrode, so that the versatility and cost can be reduced. .

  Further, in the test triode cell of the present invention, the reference electrode through hole formed in the lid member and the insertion hole for inserting the reference electrode electrical connection member formed in the insulating guide member coincide with each other. It is formed in the position.

  With this configuration, for example, when the reference electrode electrical connection member is replaced or bipolarized, the reference electrode electrical connection member can be easily taken out.

In addition, the test triode cell of the present invention is
The insulating guide member includes a reference electrode housing groove and a groove lid member that covers the reference electrode housed in the reference electrode housing groove in an insulated state ,
The groove lid member is formed with a liquid injection hole in which the reference electrode and one electrode are connected by an electrolytic solution .

  By comprising in this way, since a reference electrode can be arrange | positioned in the groove part for reference electrode accommodation, and a reference electrode can be covered with an insulating state by a groove cover member, it short-circuits with one electrode and the other electrode. In addition, it is possible to carry out measurement such as measurement of positive and negative electrode potentials with an accurate reference electrode, and it is possible to arrange the reference electrode in a triode cell for testing in a compact and simple manner.

  In the test triode cell of the present invention, a support member for supporting the reference electrode electrical connecting member is fixed to the reference electrode through hole in the lid member.

  With this configuration, the support member for supporting the reference electrode electrical connecting member is fixed to the reference electrode through hole, for example, by welding or the like. The hole is positively and negatively connected to the reference electrode by using a reference electrode electrical connection member that is securely hermetically sealed at the joint with the support member and protrudes outside through the reference electrode through hole formed in the lid member. It is possible to carry out measurements such as the measurement of the potential.

  In the test triode cell of the present invention, a support member for supporting a reference electrode electrical connecting member is screwed into the reference electrode through hole on the lid member.

  With this configuration, even if the cover member and the support member are made of different materials, the reference electrode electrical connection member can be externally supported only by providing the reference electrode through-hole forming the screw hole in the cover member. The support member formed with the screw can be screwed using the seal member, and the reference electrode through hole is hermetically sealed at the joint portion with the support member, and the reference electrode penetration formed in the lid member Using the reference electrode electrical connection member that penetrates the hole and protrudes to the outside, it is possible to perform measurement such as measurement of the positive and negative potentials using the reference electrode.

  Further, the test triode cell of the present invention includes a lid member that detachably closes the reference electrode through hole of the lid member by being detachably closed to the through hole of the support member. When the triode cell for testing is assembled, the lid member is configured to be removed from the through hole of the support member.

  With this configuration, when assembling the test triode cell, it is only necessary to remove the lid member from the through hole of the support member and screw the support member into the reference electrode through hole. Easy.

  Moreover, as will be described later, when such a triode cell for testing is used to make it bipolar, it is only necessary to close the lid member in the through hole for the reference electrode formed in the lid member. Since it can be easily bipolarized, it can be used in the same manner as a conventional bipolar cell for testing.

  In addition, the test triode cell of the present invention includes a lid member that detachably closes the reference electrode through-hole of the lid member, and the lid member is attached when the triode cell for test is assembled. It is comprised so that it may remove from the through-hole for reference electrodes, It is characterized by the above-mentioned.

  With this configuration, when assembling the test triode cell, it is only necessary to remove the lid member from the reference electrode through hole and screw the support member into the reference electrode through hole. Is easy.

  Moreover, as will be described later, when such a triode cell for testing is used to make it bipolar, it is only necessary to close the lid member in the through hole for the reference electrode formed in the lid member. Since it can be easily bipolarized, it can be used in the same manner as a conventional bipolar cell for testing.

  Further, as will be described later, when such a triode cell for testing is used to make a bipolar electrode, if the lid member is removed from the through hole for the reference electrode, the through hole for the reference electrode is used. For example, it can be configured to perform various types of measurement tests such as measurement of the temperature inside the battery with a thermocouple, measurement of the pressure inside the cell, and collection of gas generated inside the cell.

  Further, the test triode cell of the present invention is configured such that the fastening member formed on the container body and the outer peripheral part of the lid member are fastened by a fastening member, whereby the opening of the container body is removed by the lid member. It is configured to freely close the lid.

  By comprising in this way, the fastening flange formed in the container main body and the outer peripheral part of the lid member are fastened by the fastening member, so that the opening of the container main body is detachably closed by the lid member. Can be assembled and disassembled easily.

  The test triode cell of the present invention is characterized in that at least two sealing members are disposed between a fastening flange formed on the container body and an outer peripheral portion of the lid member. To do.

  With this configuration, since at least two sealing members are disposed between the fastening flange formed on the container body and the outer peripheral portion of the lid member, the electrolyte contained in the container body The generated gas does not leak to the outside, and it is possible to carry out measurements such as measuring the potential of the positive and negative electrodes with an accurate reference electrode.

  The test triode cell of the present invention is characterized in that the test triode cell is a sealed container for test evaluation of an electrode material or the like used for a coin-type storage battery.

  By comprising in this way, it can be used as a test tripolar cell used for the electrode size of coin-type storage batteries, such as lithium ion secondary batteries, such as CR2032 and CR2016, for example.

  Moreover, the test bipolar electrode of the present invention is characterized in that, in the test tripolar cell according to any one of the foregoing, the reference electrode electrical connecting member is removed to make a bipolar.

  By configuring in this way, in the above-described test triode cell, it can be easily bipolarized by simply removing the reference electrode electrical connection member, and therefore, it is used in the same manner as a conventional test bipolar cell. It becomes possible. Furthermore, for example, it is possible to adopt a configuration in which many types of measurement tests such as measurement of the temperature inside the battery with a thermocouple, measurement of the pressure inside the cell, and collection of gas generated inside the cell are performed.

  The test bipolar electrode of the present invention is characterized in that the reference electrode through-hole formed in the lid member is closed with a detachable closing member.

  With this configuration, the reference electrode through-hole formed in the lid member can be easily bipolarized by simply closing the reference electrode through-hole with the closing member. For this reason, as with the conventional bipolar cell for testing, Can be used for For example, a measurement test such as a charge / discharge test can be performed.

  The test bipolar cell of the present invention is characterized in that a thermocouple is detachably attached to a reference electrode through hole formed in the lid member.

  By configuring in this way, simply by attaching a thermocouple to the reference electrode through-hole formed in the lid member, it can be easily bipolarized, and the temperature measurement inside the battery using a thermocouple is performed. can do.

  The test bipolar cell of the present invention is characterized in that a gas pipe is detachably attached to a reference electrode through hole formed in the lid member.

By configuring in this way, simply by attaching a gas pipe to the reference electrode through hole formed in the lid member, it can be easily bipolarized, measuring the pressure inside the cell, and collecting the gas generated inside the cell It can be configured to perform various types of measurement tests.

  According to the present invention, the reference electrode is disposed in the container body, and the reference electrode electrical connection member electrically connected to the reference electrode insulates the reference electrode through-hole formed in the lid member from the outside. Since it is arranged penetrating in a state, the structure is simple and the cost can be reduced with a compact structure.

  In addition, it is possible to carry out accurate measurements such as positive and negative electrode potential measurements with a reference electrode through a reference electrode electrical connection member that protrudes outside through a reference electrode through hole formed in the lid member. It is.

  Also, by simply providing a reference electrode through-hole in the lid member of a conventional test bipolar cell, almost all components of the conventional test bipolar cell can be used, and it is necessary to prepare almost new components. It is rich in versatility and can reduce costs.

  Furthermore, in the above-described test triode cell, the bipolar electrode can be easily obtained by simply removing the reference electrode and the reference electrode electrical connecting member. For example, the temperature inside the battery can be measured by a thermocouple, Various types of measurement tests such as measurement, collection of gas generated inside the cell, and measurement test for positive / negative electrode potential measurement can be performed.

FIG. 1 is a perspective view of a test triode cell of the present invention. FIG. 2 is a cross-sectional view taken along line AA of the test triode cell of FIG. FIG. 3 is a partially enlarged cross-sectional view of a portion B of the test triode cell of FIG. 4 is an exploded perspective view of the test triode cell of FIG. 1 as viewed from above. FIG. 5 is an exploded perspective view of the test triode cell of FIG. 1 viewed from below. FIG. 6 is a partially exploded perspective view of the test triode cell of FIG. 1 as viewed from above. FIG. 7 is a perspective view of the test triode cell of the present invention as viewed from above the container body. FIG. 8 is a perspective view of the test triode cell according to the present invention as viewed from below the container body. FIG. 9 is a cross-sectional view taken along the line CC of the container main body of FIG. FIG. 10 is a partially exploded perspective view of the test triode cell of the present invention as viewed from above, the reference electrode, the insulating guide member, and the groove lid member. FIG. 11 is a partially exploded perspective view of the test triode cell according to the present invention as viewed from below the reference electrode, the insulating guide member, and the groove lid member. FIG. 12 is a perspective view illustrating a state in which the reference electrode, the insulating guide member, and the groove cover member of the test triode cell of the invention are assembled. 13A is a cross-sectional view taken along the line DD of FIG. 12, and FIG. 13B is a partially enlarged cross-sectional view of portion E of FIG. 13A. FIG. 14 is a perspective view of the test triode cell of the present invention as viewed from above the lid member. FIG. 15 is a perspective view of the test triode cell of the present invention as viewed from below. 16 is a cross-sectional view of the lid member of FIG. 15 taken along line FF. 17A is a top view of the groove lid member 64 of the test triode cell 10 of another embodiment of the present invention, and FIG. 17B is a reference electrode on the groove lid member 64 of FIG. 17A. FIG. 17C is a perspective view showing a state in which the reference electrode 62 is arranged on the groove lid member 64 of FIG. 17A. 18A is a front view of the reference electrode electrical connecting member 58 of the test triode cell 10 according to another embodiment of the present invention, and FIG. 18B is a test according to another embodiment of the present invention. 18C is a front view of the reference electrode electrical connection member 58 of the triode cell 10, FIG. 18C is a side view of the reference electrode electrical connection member 58 of FIG. 18B, and FIG. It is a front view of the electrical connection member 58 for reference electrodes of the triode cell for test 10 of another Example. FIG. 19 is a perspective view of the insulating guide member 28 of the test triode cell 10 according to another embodiment of the present invention. 20 is a top view of the insulating guide member 28 of FIG. FIG. 21 is a perspective view of a test triode cell 10 according to another embodiment of the present invention. 22 is a cross-sectional view taken along line LL in FIG. FIG. 23 is a perspective view of a test bipolar cell of the present invention. 24 is a cross-sectional view of the test bipolar cell of FIG. 23 taken along line GG. FIG. 25 is a perspective view of a test bipolar cell according to another embodiment of the present invention. 26 is a cross-sectional view of the test bipolar cell of FIG. 25 taken along the line HH. FIG. 27 is a perspective view of a test triode cell according to another embodiment of the present invention. FIG. 28 is a cross-sectional view taken along line II of the test bipolar cell of FIG. FIG. 29 is a perspective view of a test bipolar cell according to another embodiment of the present invention. FIG. 30 is a perspective view of a conventional test bipolar cell. 31 is a cross-sectional view of the conventional test bipolar cell of FIG. 30 taken along line JJ. FIG. 32 is a partially enlarged cross-sectional view of a portion K of the conventional test bipolar cell of FIG. FIG. 33 is an exploded perspective view of the conventional test bipolar cell of FIG. 30 viewed from above. FIG. 34 is an exploded perspective view of the conventional test bipolar cell of FIG. 30 viewed from below. FIG. 35 is an exploded perspective view of the conventional test triode cell of FIG.

  Hereinafter, embodiments (examples) of the present invention will be described in more detail with reference to the drawings.

    1 is a perspective view of the test triode cell of the present invention, FIG. 2 is a cross-sectional view of the test triode cell of FIG. 1 taken along line AA, and FIG. 3 is the test triode cell of FIG. FIG. 4 is an exploded perspective view seen from above the test triode cell of FIG. 1, and FIG. 5 is an exploded view seen from below of the test triode cell of FIG. FIG. 6 is a partially exploded perspective view of the test triode cell of FIG. 1 viewed from above.

  Meanwhile, research and development institutions such as universities are actively researching and developing electrode materials used for lithium ion secondary batteries currently used in mobile phones and the like. Moreover, since a lithium ion secondary battery is a non-aqueous secondary battery, it needs to be manufactured in inert gas atmosphere, such as argon. The research and development organization manufactures lithium ion secondary batteries in a box filled with an inert gas such as argon called a glove box.

In addition, lithium ion secondary batteries have a wide variety of shapes, from a cylindrical shape to a square shape, ranging from a large in-vehicle size to a small coin size. In research and development organizations, to advance the research and development using a small electrode size, for example, CR2032 and small size, such a coin-type battery such as CR2016, electrode area (2 cm ²⁾ about a thin generally circular disk shape was approximately electrode diameter 16mm The electrode material is used.

  Also, inside the glove box, instead of mounting a coin case or the like, the contents contained in a storage battery such as an electrode material are sealed in a simple test sealed container called a “cell” and outside the glove box. In addition, the cell is connected to a charge / discharge device, a charge / discharge test or the like is performed, and an electrode material or the like is evaluated.

In the following examples, test methods for electrode materials used in, for example, lithium ion secondary batteries, which are performed in such various research and development institutions, will be described.
That is, in such various research and development organizations, a thin disk-shaped electrode material having an electrode diameter of about 16 mm used for a coin size is used to form a simple sealed container called a “cell” in a glove box. Enclosed.

  And the electrode used for a lithium ion secondary battery by taking out a cell out of the glove box (outside air), connecting the cell to a charge / discharge device, and performing a charge / discharge test such as repeated charge / discharge Material and other evaluation tests are being conducted. Below, the usage of such a cell is demonstrated.

  By the way, the cell used for the test has two electrodes (for example, a positive electrode and a negative electrode), a “bipolar cell” used for two-electrode measurement, and three electrodes using a reference electrode. And a “three-electrode cell” used for three-electrode measurement.

  In the two-electrode type measurement, only the voltage (potential difference between the two electrodes) can be measured, so a reaction (redox reaction) occurs simultaneously between the two electrodes. I cannot know what kind of reaction is happening.

  On the other hand, in the three-electrode measurement, the potential of each of the two electrodes (for example, the positive electrode and the negative electrode) can be measured with respect to the reference electrode (the reference electrode), so one electrode (for example, the positive electrode) You can see what kind of reaction is happening. For this reason, in the three-electrode type measurement, it is possible to know what kind of reaction is occurring at the other electrode (for example, the negative electrode). Therefore, the three-electrode type measurement is widely used as an effective electrochemical measurement method.

  By the way, in addition to the cell, the research and development organization manufactures a coin-type storage battery mounted using an actual coin case, and performs a test evaluation. Such a mounted coin-type battery is difficult to repeat disassembly and assembly. For this reason, a test two-pole cell that is easy to disassemble and assemble is used. In addition, the mounted coin-type storage battery cannot perform three-electrode measurement, and cannot collect gas generated in the storage battery. For this reason, a test triode cell is used.

  In the following examples, a simple disk called “cell” is used in a glove box by using a thin disk-shaped electrode material having an outer diameter of about 16 mm of a coin size, which is performed in such various research and development institutions. Used in lithium ion secondary batteries by enclosing in a sealed container, taking the cell out of the glove box (outside air), and performing charge / discharge tests such as connecting the cell to a charge / discharge device and performing repeated charge / discharge A method of using the cell for evaluating the electrode material to be used will be described.

1 to 6, reference numeral 10 indicates a test triode cell of the present invention as a whole.
The test triode cell 10 accommodates the contents of a storage battery such as one electrode 16, a separator 26, the other electrode 34, a reference electrode 62, and an electrolyte, which will be described later, when performing a measurement test. It is. Below, the case where the content of the said storage battery is accommodated in the test triode cell 10 which comprises an accommodation container is demonstrated.

  As shown in FIGS. 1 to 6, the test triode cell 10 of the present invention includes a substantially cup-shaped container body 12. The container main body 12 includes a housing portion 14 that is recessed in a cylindrical shape, and is configured to house the contents of the storage battery in the housing portion 14.

  In addition, the container main body 12 is comprised from the metal which has electrical conductivity, such as stainless steel, such as SUS304, for example. The container body 12 has one electrode 16 having a disk shape (outer diameter 16.15 mm), for example, a carbon material such as graphite as a negative electrode material applied to one side of a copper foil, and the dried negative electrode is electrically To be connected to.

As shown in FIGS. 1 to 9, the container body 12 has an annular fastening flange 18 formed on the upper portion thereof. The fastening flange 18 is spaced apart from each other at a central angle of 90 °. Four embedded bolts 20 are erected. The embedded bolt 20 is made of a metal having electrical conductivity such as stainless steel such as SUS304.
An insulating washer 20b made of an insulating material such as a fluororesin such as PTFE resin is attached to the outer periphery of the base end portion of the embedded bolt 20.

  Further, on the inner peripheral side of the fastening flange 18, for example, an O-ring shaped inner seal member 22 made of a fluororesin such as PTFE resin is mounted.

  Further, as shown in FIGS. 1 to 9, particularly FIGS. 3 to 4, the bottom of the container 14 of the container body 12 is provided with a guide groove 24 having a concave shape for positioning and storing an insulating guide member 28 described later. The electrode groove 15 is formed, and for example, one electrode 16 made of a negative electrode is accommodated in the recess-shaped electrode groove 15.

As shown in FIGS. 2 to 3 , a gap 11 is provided between the inner peripheral wall of the accommodating portion 14 of the container body 12 and the outer peripheral side wall 28 a of the insulating guide member 28. 11, the insulating guide member 28 can be disposed in the guide groove portion 24 using tweezers or the like.
Further, as shown in FIGS. 19 to 20 , the gap includes a notch-shaped liquid injection hole 32 d provided on the outer peripheral side of the insulating guide member 28 and a side wall on the bottom surface side of the insulating guide member 28, as will be described later. There is also an effect of facilitating the injection of the electrolytic solution through the notched liquid injection hole 32e provided in 28a.

  In addition, by providing the recess-shaped electrode groove 15 at the bottom of the accommodating portion 14 of the container main body 12 in this way, one electrode 16 can be positioned and placed. However, the concave electrode groove 15 does not have to be provided at the bottom of the container 14 of the container body 12.

  For example, although not shown, a ring-shaped thin plate is separately prepared, and the outer diameter of the thin plate is fitted into the guide groove portion 24 so that the inner diameter of the thin plate matches the outer diameter of one electrode 16. Thus, a thin plate may be accommodated in the accommodating portion 14. This is the same as providing the recess-shaped electrode groove 15 at the bottom of the accommodating portion 14 of the container body 12.

  A disc-shaped separator (for example, an outer diameter of 19 mm) made of a porous insulating film made of a synthetic resin such as a polyethylene resin such as polyethylene or polypropylene and capable of moving ions is formed on the upper surface of the one electrode 16. 26 is interposed and laminated.

  Further, on the upper surface of the separator 26, for example, a substantially cylindrical insulating guide member 28 made of an insulating material such as polypropylene resin is fitted in the guide groove portion 24 so as to be positioned on the outer periphery of the one electrode 16. Is arranged.

  The insulating guide member 28 is formed with an annular liquid reservoir groove 30 on the upper side, and a plurality of liquid injection holes 32 penetrating vertically are spaced apart from each other by a fixed central angle. Is formed.

  For example, as shown in FIGS. 10 to 12, the position and size of the liquid injection hole 32 are vertically penetrated to be provided for inserting a reference electrode electrical connecting member 58 described later. It is also possible to make it the same as the insertion hole 32a. For this reason, the injection hole 32 may be used as the insertion hole 32a.

  Further, for example, when grooves are provided on both of the upper and lower end surfaces of the insulating guide member 28, they can be formed to have the same groove size and depth. For this reason, if the groove portion 30 facing upward is disposed, for example, facing downward, it is used as a reference electrode accommodation groove 60 provided to accommodate a reference electrode 62, which will be described later. It doesn't matter.

  Then, on the inner peripheral side of the insulating guide member 28, the other electrode 34 having a disk shape (for example, outer diameter 15.95 mm), for example, one side of an aluminum foil was coated with lithium cobalt oxide as a positive electrode material and dried. A positive electrode is arranged.

  On the upper surface of the other electrode 34, as shown in FIGS. 2 to 5, an electrode pressing member 36 is disposed so as to be fitted to the inner peripheral side of the insulating guide member 28. The electrode pressing member 36 includes a disk-shaped pressing member main body 38 and a small-diameter spring support portion 40 erected from the center of the pressing member main body 38. A compression spring 42 is interposed on the outer periphery of the spring support portion 40 in a compressed state.

  A substantially disk-shaped lid member 44 for detachably closing the opening 12a of the container body 12 is disposed on the upper surfaces of the spring support portion 40 and the compression spring 42 of the pressing member body 38.

  The pressing member main body 38, the compression spring 42, and the lid member 44 are made of an electrically conductive metal such as stainless steel such as SUS304. Therefore, the lid member 44 is electrically connected to the other electrode 34 accommodated in the accommodating portion 14 of the container main body 12 via the spring support portion 40 and the compression spring 42 of the pressing member main body 38.

  In addition, as shown in FIGS. 1 and 4 to 6, four fastening holes 46 are formed in the lid member 44 at positions corresponding to the four embedded bolts 20 of the container body 12. A cylindrical insulating bush 48 made of an insulating material such as a fluororesin such as PTFE resin is attached to the inner periphery of the fastening hole 46.

  Further, as shown in FIGS. 2 and 5, an O-ring-shaped outer seal member 50 made of a rubber material such as silicon is mounted on the lower surface of the lid member 44.

Then, for example, an electrolyte containing a lithium salt such as LiPF ₆ as an electrolyte in the container 14 of the container body 12, that is, in the groove 30 for storing the insulating guide member 28, using a syringe or the like. inject. As a result, the one of the reservoirs accommodated in the accommodating portion 14 of the container body 12 via the groove 30 for liquid pooling of the insulating guide member 28, the liquid injection hole 32, and the liquid injection hole 64a of the groove lid member 64 described later. The electrode 16, the separator 26, the other electrode 34, and a reference electrode 62 to be described later are immersed in the electrolytic solution.

  As a procedure for injecting the electrolytic solution, one electrode 16, the separator 26, the other electrode 34, and the reference electrode 62 that are already impregnated with the electrolytic solution may be used. Alternatively, the compression spring 42 and the electrode pressing member 36 may be removed and the liquid may be injected from the inner peripheral side of the insulating guide member 28 in a state where the insulating guide member 28 is accommodated in the accommodating portion 14 of the container body 12.

  Thereafter, the embedded bolt 20 of the container main body 12 is inserted into the inner periphery of the insulating bush 48 of the fastening hole 46 of the lid member 44 so that the upper portion protrudes from the upper surface of the container main body 12, and the protruding screw portion 20a is fastened with a fastening nut 52 made of a metal having electrical conductivity such as stainless steel such as SUS304. Thereby, the cover member 44 is closed so that the opening part 12a of the container main body 12 is detachable.

  In the work in the glove box having poor workability, it is preferable that the test triode cell 10 is easy to perform operations such as assembly and disassembly. For this reason, it is preferable that a tool is not used as much as possible. For this reason, the shape of the fastening nut 52 is preferably not a hex nut but a wing nut.

  Further, the double structure using the inner sealing member 22 and the outer sealing member 50 improves the sealing performance when the opening 12a of the container body 12 is closed by the lid member 44.

  Since the inner seal member 22 may be directly touched by the electrolyte when the closed triode cell 10 is handled, the material has chemical resistance. Desired.

For this reason, it is preferable to use a resin material such as Teflon (registered trademark) for the inner seal member 22.
That is, since the seat area of the inner seal member 22 is relatively large, when an ordinary resin material is used, the inner seal member 22 is not deformed and may not be sufficiently secured with a light tightening with a wing nut.

Further, the inner sealing member 22 may react with the electrolytic solution, and a sealing agent cannot be applied to improve the sealing performance . For example, even if fluorine rubber such as Viton (registered trademark) is used as the rubber material that can be easily deformed for the inner seal member 22, it is soluble in most electrolytes, and therefore expensive fluorine rubber such as Kalrez (registered trademark). This is because a sealant such as grease cannot be applied.

  On the other hand, the outer seal member 50 is not directly touched by the electrolytic solution, so that an inexpensive rubber material such as silicon can be used, and a sealant such as grease is applied around the rubber material. It is also possible.

  For this reason, for the outer seal member 50, for example, a resin material having chemical resistance such as Teflon (registered trademark) can be used. In addition, a sealant such as grease can be applied to the outer seal member 50 that mainly seals the electrolytic solution (liquid), and an inexpensive rubber material such as silicon that can be easily deformed can be used. . In this case, the outer seal member 50 mainly seals outside air (atmosphere containing moisture outside the glove box).

  When the lid member 44 is closed, the compression spring 42 is compressed, and the contact surfaces of the stacked members are in pressure contact with each other by the compression spring 42. For this reason, the electrical contact resistance between each contact surface falls, and it will be in the state which can be charged / discharged as a storage battery.

Further, as shown in FIGS . 1 and 5 to 8 , the container body 12 is formed with terminal screws 54 on the lower surface of the annular fastening flange 18, and the upper surface of the lid member 44 has terminal terminals 54. A screw 56 is formed.

  As shown in FIGS. 1 to 6 and FIGS. 10 to 13, the insertion hole 32 a of the insulating guide member 28 has a rod-like shape made of a metal having electrical conductivity such as stainless steel such as SUS304. A lower end 58a of a reference electrode electrical connecting member 58 (for example, an outer diameter of 1.5 mm) is inserted.

  As shown in FIGS. 3 to 6, the reference electrode housing groove 60 is formed in an annular shape on the lower surface of the insulating guide member 28, and the lower end 58 a of the reference electrode electrical connection member 58 is connected to the reference electrode. It is exposed from the insertion hole 32a formed in the housing groove 60.

  The reference electrode accommodating groove 60 accommodates a plate-like reference electrode 62 made of, for example, lithium metal so as to be in contact with and electrically connected to the lower end 58a of the reference electrode electrical connecting member 58. ing. In this embodiment, the reference electrode 62 is a plate-shaped reference electrode 62. However, the shape of the reference electrode 62 can be changed as appropriate, and a metal foil is punched or a metal wire is used as in the prior art. It is also possible to make a ring shape

  In this case, since the lithium metal is soft and sticky like chewing gum, when used as the reference electrode 62, the lithium metal foil is cut into an appropriate size to form a plate piece, and the reference electrode housing groove. It is only necessary to affix it in a position that closes the insertion hole 32a in 60.

Further, a ring-shaped groove made of an insulating material such as polypropylene resin so as to cover the reference electrode 62 accommodated in the reference electrode accommodating groove 60 on the lower surface of the insulating guide member 28 in an insulating state in this way. The lid member 64 is fitted in the reference electrode housing groove 60.
As shown in FIGS. 3, 5, and 6, the groove lid member 64 is also formed with a liquid injection hole 64 a corresponding to the liquid injection hole 32 of the insulating guide member 28.

Through the liquid injection hole 64 a of the groove lid member 64, the reference electrode 62 and the one electrode 16 are connected by the electrolytic solution, and the one electrode 16 and the other electrode 34 are connected by the separator 26 by the electrolytic solution. Thus, three electrodes can be measured by connecting the three electrodes with the electrolyte.

  Further, in this case, the groove lid member 64 can be fitted into the reference electrode accommodating groove 60 on the lower surface of the insulating guide member 28 so that the groove lid member 64 does not fall off the insulating guide member 28 and is easy to attach and detach. A so-called “squeeze fit” with a press fit is suitable.

  With this configuration, the insulating guide member 28 in which the reference electrode 62 is accommodated and the groove lid member 64 is fitted is integrated, and its handling is easy in the glove box.

  In this embodiment, the size of the insertion hole 32a is such that the size of the hole fits with the reference electrode electrical connection member 58 with a clearance fit, is guided by the insertion hole 32a, and can move up and down. Have

  With this configuration, the reference electrode member electrical connecting member 58 can close the container body 12 using the lid member 44 in a state of being attached to the insulating guide member 28.

  In this case, the size of the hole of the insertion hole 32a is not limited at all. For example, the size of the hole may be large with respect to the outer diameter of the reference electrode electrical connecting member 58. it can. Accordingly, the container body 12 can be closed using the lid member 44 in a state where the reference electrode electrical connecting member 58 is mounted on the reference electrode connector member 68.

  Further, in order to insert the reference electrode electrical connecting member 58 into the insertion hole 32a of the insulating guide member 28 and the reference electrode through hole 66 of the lid member 44, the positions of the holes are overlapped (formed at a matching position). Need). Moreover, although the distance from the center of each member corresponds in the position in which the hole was provided, it is also necessary to match the angle.

  By configuring in this way, for example, when the reference electrode electrical connection member 58 is replaced or bipolarized, the reference electrode electrical connection member 58 can be easily taken out.

  The insulating guide member 28 is accommodated and accommodated in the container body 12, but the insulation guide member 28 is fitted to the container body 12 in the same manner as in the conventional bipolar cell 100 for testing. It is a gap fitting (about H9 / e9) frequently used for fitting (shaft and hole).

More this, the insulating guide member 28 can rotate while being accommodated in the container body 12. For example, the insulating guide member 28 is accommodated in the container body 12, and then the reference electrode electrical connecting member 58 is mounted in the insertion hole 32 a of the insulating guide member 28.

  In this state, the reference electrode electrical connection member 58 is inserted into the reference electrode through hole 66 of the lid member 44 described later via the insulating tube 72. At this time, since the reference electrode electrical connection member 58 is long, the reference electrode electrical connection member 58 can be inserted while viewing the reference electrode through hole 66 of the lid member 44.

  Next, as in the case of closing the conventional test bipolar cell 100, the embedded bolt 20 of the container body 12 is inserted into the fastening hole 46 of the lid member 44 via the insulating bush 48, and the lid member 44 is placed on the container main body 12 via the inner seal member 22 or the like.

At this time, the reference electrode electrical connecting member 58 is supported by the lid member 44 by the reference electrode connector member 68 via the insulating ferrule 76 as will be described later.
For this reason, when the lid member 44 is gripped and the positions of the fastening holes 46 of the lid member 44 and the embedded bolts 20 are aligned, the insulating guide member 28 rotates while being accommodated in the container body 12 at the same time.

Thus, the insertion hole 32a of the insulating guide member 28 and the reference electrode through hole 66 of the lid member 44 are in a state where the positions of the holes overlap each other.
That is, just by gripping the lid member 44, the hole to be fitted (the fastening hole 46 of the lid member 44 and the insertion hole 32a of the insulating guide member 28) and the shaft (electric connection member 58 for reference electrode) are aligned. Since it can be performed in a visible state, the operation is easy.

In addition, when the angles of the substantially circular shaft and hole to be fitted are matched, generally, a part of the fitting portion is cut, or a pin or a key is used.
Therefore, although it is necessary to prepare the container main body 12 separately, although not shown, the outer peripheral portion of the insulating guide member 28 is partially cut, and the accommodating portion 14 of the container main body 12 is provided so as to match the shape of the cut portion. It doesn't matter.

  With this configuration, the insertion hole 32 a of the insulating guide member 28 and the positions of the reference electrode through holes 66 of the lid member 44 are overlapped with each other only by housing the insulating guide member 28 in the container body 12. Is possible.

In addition, when assembling the test triode cell 10, the nuts are closed in order. First, the fastening nut 52 is tightened, and the container body 12 is sealed by the lid member 44.
Next, the upper end portion 58b of the reference electrode electrical connecting member 58 is pushed to bring the lower end 58a into contact with the reference electrode 62, and then the connector nut 78 is tightened to seal the reference electrode electrical connecting member 58.

  When lithium metal is used for the reference electrode 62, the reference electrode 62 is deformed by being sandwiched between the lower end 58a of the reference electrode electrical connecting member 58 and the groove lid member 64 due to the characteristics of the lithium metal. The contact is made in a form sticking to the lower end 58a, and conduction is ensured.

  Further, the groove lid member 64 is in contact with the bottom surface of the container body 12, but the reference electrode 62 is not short-circuited with the container body 12 by the groove lid member 64 and is housed in the insulating guide member 28 in an insulated state.

Then, the test triode cell 10 is taken out of the glove box, and the test triode cell 10 is connected to a measuring instrument such as a potentiostat to perform a three-electrode measurement.
In connection with a measuring instrument such as a potentiostat, one pole 16 is from the terminal screw 54 of the container body 12, the other pole 34 is from the terminal screw 56 of the lid member 44, and the reference electrode 62 is the reference electrode. From the upper end portion 58b of the electrical connection member 58 for use, each is connected by cable wiring.

When the measurement is finished, the test triode cell 10 is accommodated in the glove box, the test triode cell 10 is disassembled, and the electrodes and the like are taken out.
The order of removing the nuts is as follows. First, the fastening nut 52 is loosened, and then the connector nut 78 is loosened.

  Further, depending on the type of electrode material, the container main body 12, the lid member 44, the electrode pressing member 36, and the reference electrode electrical connecting member 58 made of a metal material that requires electrical conduction in the test triode cell 10, for example, All may be stainless steel such as SUS304.

  Further, only the container main body 12 may be changed to an aluminum material such as A5056, or all of these members may be changed to an aluminum material. In addition, as a surface treatment for the surface of these members, for example, a surface treatment such as gold plating or nickel plating may be performed.

  In addition, among these members, only a portion where current collection is necessary, for example, only the surface of the guide groove portion 24 of the accommodating portion 14 of the container body 12 that accommodates one electrode 16 may be partially plated. Absent. Furthermore, other portions of the container main body 12 that do not require current collection may be subjected to an insulation treatment such as a Teflon (registered trademark) coat.

  According to the test triode cell 10 of the present invention configured as described above, the insulating guide member 28 in which the reference electrode electrical connecting member 58 and the reference electrode 62 are arranged on the outer periphery of one electrode 16 and the other electrode. Since the reference electrode electrical connection member 58 and the reference electrode 62 are not short-circuited with one electrode and the other electrode, the three-electrode type measurement by the reference electrode 62 is performed. It is possible to implement.

  In addition, the reference electrode 62 can be compactly and easily disposed in the test triode cell 10, and the conventional insulating guide member can be provided with a reference electrode housing groove 60 to be used for holding the reference electrode. It is rich in versatility and can reduce costs.

  On the other hand, as shown in FIGS. 1 to 6 and FIGS. 14 to 16, the lid member 44 is formed with a reference electrode through hole 66 penetrating vertically, and passes through the reference electrode through hole 66. As shown, the upper end portion 58b of the reference electrode electrical connecting member 58 is inserted.

  Further, a reference electrode connector member 68 made of a metal such as SUS316 or the like, which constitutes a support member that supports the reference electrode electrical connection member 58, is fixed to the reference electrode through hole 66. ing. As shown in FIG. 2, the reference electrode connector member 68 has a through hole 70 formed therein.

  As shown in FIGS. 2 and 6, an insulating tube 72 made of an insulating material such as a fluororesin such as PTFE resin is attached to the outer periphery of the upper end portion 58b of the reference electrode electrical connecting member 58. Has been.

  In this state, the upper end portion 58 b of the reference electrode electrical connecting member 58 is inserted into the through hole 70 of the reference electrode connector member 68. Then, the upper end portion 58 b of the reference electrode electrical connection member 58 is inserted so as to protrude from the upper end 68 a of the reference electrode connector member 68.

  In addition, a wedge-shaped insulating ferrule 76 made of an insulating material such as a fluororesin such as PTFE resin is attached to the inclined recess 74 formed in the upper end 68a of the reference electrode connector member 68. The upper end portion 58 b of the reference electrode electrical connecting member 58 is inserted so as to protrude from the upper end 68 a of the reference electrode connector member 68 through the through hole 76 a of the insulating ferrule 76.

  In this state, a connector nut 78 made of a metal such as stainless steel such as SUS304 is attached so as to be screwed into a screw formed on the outer periphery of the upper end 68a of the reference electrode connector member 68. In this state, the upper end portion 58 b of the reference electrode electrical connecting member 58 protrudes above the connector nut 78 through the through hole 78 a of the connector nut 78. Thus, the reference electrode electrical connection member 58 is supported and fixed by the reference electrode connector member 68.

In this case, a hexagon nut is used as the shape of the connector nut 78, but other shapes such as a knurled nut may be used. In addition, since the sheet area of the insulating ferrule 76 is small, even a resin material such as Teflon (registered trademark) can be easily deformed. Therefore, when tightening the connector nut 78 in the glove box, a tool such as a spanner is not used. Sealability is ensured by tightening by hand.

  Further, it is preferable that the outer seal member 50 and the insulating tube 72 are configured not to fall off from the lid member portion 44 when the lower side of the lid member portion 44 is directed downward. When the upper side of the lid member 44 is directed downward, the insulating bushing 48 is preferably configured so as not to fall off from the lid member 44.

  According to the test triode cell 10 of the present invention configured as described above, the reference electrode connector member 68 serving as a support member for supporting the reference electrode electrical connection member 58 is provided on the lid member 44 through the reference electrode. Since it is fixed to the hole 66, the reference electrode electrical connection member 58 that penetrates the reference electrode through hole 66 formed in the lid member 44 and protrudes to the outside is not damaged and damaged, and the reference electrode electrical connection Through the member 58, it is possible to carry out measurement such as measurement of positive and negative potentials with an accurate reference electrode.

The test triode cell 10 of the present invention configured as described above includes a terminal screw 54 formed on the lower surface of the fastening flange 18 of the container body 12, a terminal screw 56 formed on the upper surface of the lid member 44, and a reference electrode. By connecting the upper end portion 58b of the reference electrode electrical connecting member 58 protruding upward from the connector member 68 to a test device (not shown) connected to a personal computer or the like, for example, in a charge / discharge test, Various researches and tests have been conducted for the purpose of observing changes in electrodes and for confirming the safety of storage batteries.

  According to the test triode cell 10 of the present invention configured as described above, the reference electrode 62 is disposed in the container body 12 and the reference electrode electrical connection member 58 is electrically connected to the reference electrode 62. However, since the reference electrode through-hole 66 formed in the lid member 44 is disposed in an insulated state from the outside, the structure is simple and the structure can be reduced with a compact structure.

  In addition, the measurement of positive and negative potentials by the reference electrode 62 is performed accurately through the reference electrode electrical connection member 58 that protrudes outside through the reference electrode through hole 66 formed in the lid member 44. Is possible.

  Further, by simply providing the reference electrode through-hole 66 in the lid member of the conventional test bipolar cell, almost all the components of the conventional test bipolar cell can be used, and it is necessary to prepare almost new components. It is rich in versatility, and the cost can be reduced.

  Furthermore, according to the test triode cell 10 of the present invention, the fastening flange 18 formed on the container main body 12 and the outer peripheral portion of the lid member 44 are fastened by the fastening nut 52 which is a fastening member, whereby the lid Since the opening 12a of the container body 12 can be detachably closed by the member 44, assembly and disassembly are easy.

  Further, according to the test triode cell 10 of the present invention, at least two sealing members (the inner sealing member 22 and the inner sealing member 22) are provided between the fastening flange 18 formed on the container body 12 and the outer peripheral portion of the lid member 44. Since the outer seal member 50) is disposed, the electrolyte contained in the container body 12 and the generated gas do not leak to the outside, and the measurement of the positive and negative potentials using the reference electrode 62 is performed accurately. Is possible.

Furthermore, as will be described later, by using such a test tripolar cell 10 of the present invention, this can be easily bipolarized and a charge / discharge test using a conventional test bipolar cell can be performed.
Furthermore, as will be described later, for example, it is configured to perform various types of measurement tests such as measurement of the temperature inside the cell using a thermocouple, measurement of the pressure inside the cell using a pressure gauge, and measurement tests such as collection of gas generated inside the cell. A test bipolar cell can be provided.

  17A is a top view of the groove lid member 64 of the test triode cell 10 of another embodiment of the present invention, and FIG. 17B is a reference electrode on the groove lid member 64 of FIG. 17A. FIG. 17C is a perspective view showing a state in which the reference electrode 62 is arranged on the groove lid member 64 of FIG. 17A.

  The test triode cell 10 of this example has basically the same configuration as the test triode cell 10 of Example 1 shown in FIGS. 1 to 16, and the same constituent members have the same configuration. Reference numerals are assigned and detailed description thereof is omitted.

  In the test triode cell 10 of Example 1 shown in FIGS. 1 to 16, the groove lid member 64 has a ring shape, but in the test triode cell 10 of this embodiment, the groove lid member Reference numeral 64 denotes a shape in which a ring shape is cut to provide a notch.

  If such a notch is provided, the reference electrode 62 and the one electrode 16 are connected by an electrolytic solution through the notch, and tripolar measurement is possible. For this reason, it is not necessary to separately provide the liquid injection hole 64 a in the groove lid member 64.

  18A is a front view of the reference electrode electrical connecting member 58 of the test triode cell 10 according to another embodiment of the present invention, and FIG. 18B is a test according to another embodiment of the present invention. 18C is a front view of the reference electrode electrical connection member 58 of the triode cell 10, FIG. 18C is a side view of the reference electrode electrical connection member 58 of FIG. 18B, and FIG. It is a front view of the electrical connection member 58 for reference electrodes of the triode cell for test 10 of another Example.

  The test triode cell 10 of this example has basically the same configuration as the test triode cell 10 of Example 1 shown in FIGS. 1 to 16, and the same constituent members have the same configuration. Reference numerals are assigned and detailed description thereof is omitted.

  In the test triode cell 10 of Example 1 shown in FIGS. 1 to 16, the reference electrode electrical connection member 58 was substantially cylindrical, but the reference electrode electrical connection member 58 of this example was A stepped portion 58c having a large diameter is formed at a substantially central position in the longitudinal direction.

  For example, when disassembling the test triode cell 10, if gas is generated from the electrodes during charging / discharging and the internal pressure in the cell is increased, the operator must first remove the nut in the order of removing the nut. If the nut 78 is loosened, the reference electrode electrical connecting member 58 may protrude from the insulating ferrule 76.

  Therefore, a stepped portion 58c is formed in the reference electrode electrical connecting member 58 of this embodiment at a position that does not engage with the insertion hole 32a of the insulating ferrule 76 and the insulating guide member 28.

By forming such a stepped portion 58c, even if the operator accidentally loosens the connector nut 78 first, the stepped portion 58c of the reference electrode electrical connecting member 58 is locked to the insulating ferrule 76. become.
As a result, the reference electrode electrical connecting member 58 does not protrude from the insulating ferrule 76, and the gas escapes first from the threaded portion of the connector nut 78.

  In this case, the method of forming the stepped portion 58c is not particularly limited. For example, as shown in FIG. 18A, the outer diameter of the reference electrode electrical connecting member 58 is increased, and the insulating guide is formed. The stepped portion 58c can be formed by polishing both ends so that the member 28 and the insulating ferrule 76 can be inserted.

  Further, as shown in FIGS. 18 (B) to 18 (C), the reference electrode electrical connection member 58 is swelled flat by crushing, for example, a press with a substantially central position in the longitudinal direction. A stepped portion 58c having a shape can be formed.

  Further, as shown in FIG. 18 (D), for example, a Teflon (registered trademark) coating that does not react with the electrolytic solution is applied to the substantially central position in the longitudinal direction of the reference electrode electrical connecting member 58, or the electrolytic solution is applied to the electrolytic solution. A tape such as Kapton (registered trademark) that does not react may be wound.

  In addition, about the method of forming the step part 58c in the electrical connection member 58 for reference electrodes, a well-known method can be employ | adopted and it is not limited to said formation method.

FIG. 19 is a perspective view of the insulating guide member 28 of the test triode cell 10 of another embodiment of the present invention, and FIG. 20 is a top view of the insulating guide member 28 of FIG.

  The test triode cell 10 of this example has basically the same configuration as the test triode cell 10 of Example 1 shown in FIGS. 1 to 16, and the same constituent members have the same configuration. Reference numerals are assigned and detailed description thereof is omitted.

In the test triode cell 10 of Example 1 shown in FIGS. 1 to 16, the liquid injection hole 32 and the insertion hole 32 a provided in the insulating guide member 28 are formed so that their positions and sizes match. ing.
On the other hand, in the insulating guide member 28 of this embodiment, the liquid injection hole 32 and the insertion hole 32a have different functions and effects. Therefore, as shown in FIGS. It can be provided in various positions and sizes.

  That is, the reason why the liquid injection hole 32 is provided is a hole for facilitating the injection of the electrolytic solution using a syringe or the like even when the insulating guide member 28 is accommodated in the container body 12.

Accordingly, the liquid injection hole 32 may be a notch that is not completely connected to the circumference as shown in FIGS. 19 to 20, for example, and a notch-shaped injection provided on the inner peripheral side of the insulating guide member 28. The liquid hole 32c can be a notch-shaped liquid injection hole 32d provided on the outer peripheral side of the insulating guide member 28.
Furthermore, the liquid injection hole 32 can be, for example, a notch-shaped liquid injection hole 32e provided in the side wall 28a on the bottom surface side of the insulating guide member 28 as shown in FIGS.

  The notch-shaped liquid injection holes 32c to 32e are arc-shaped notches, but are not limited to these notches. It can be a notch in the shape.

In addition, as mentioned above, even if it combines these notch-shaped injection holes 32c-32e, it is also possible to provide independently. Further, the number and arrangement thereof are not limited at all.
For example, even when only the notch-shaped injection hole 32e provided in the side wall 28a on the bottom surface side is provided, the electrolyte can be injected.
Furthermore, the injection hole 32 is not provided, and it is a matter of course that the electrolytic solution can be injected from the inner peripheral side of the insulating guide member 28 by removing the compression spring 42 and the electrode pressing member 36 as described above.

  21 is a perspective view of a test triode cell 10 according to another embodiment of the present invention, and FIG. 22 is a cross-sectional view taken along line LL in FIG.

The test triode cell 10 of this example has basically the same configuration as the test triode cell 10 of Example 1 shown in FIGS. 1 to 16, and the same constituent members have the same configuration. Reference numerals are assigned and detailed description thereof is omitted.
21 to 22, the insulating tube 72, the insulating ferrule 76, and the connector nut 78 are omitted.

    In the test triode cell 10 of Example 1 shown in FIGS. 1 to 16, a reference electrode connector member 68, which is a support member for supporting the reference electrode electrical connection member 58, is attached to the lid member 44. For example, the reference electrode through-hole 66 is fixed to the formed through-hole 66 for welding using welding or the like.

In contrast, in the test triode cell 10 of this embodiment, as shown in FIGS. 21 to 22, an inner screw 66 a is formed on the inner periphery of the reference electrode through hole 66 of the lid member 44. Yes. Corresponding to this, an external screw 68c is formed on the outer periphery of the lower end 68b of the reference electrode connector member 68, which is a support member for supporting the reference electrode electrical connecting member 58.

As a result, the reference electrode connector member 68, which is a support member that supports the reference electrode electrical connection member 58, can be screwed into the lid member 44 in the reference electrode through hole 66 formed in the lid member 44.
For example, when the lid member 44 and the reference electrode connector member 68 are made of different materials (for example, when the lid member 44 is made of aluminum and the reference electrode connector member 68 is made of stainless steel such as SUS). For example, it is useful when a fixing method such as welding cannot be employed.

  Of course, the reference electrode connector member 68 can be detachably screwed into the reference electrode through hole 66 formed in the lid member 44.

Further, as shown in FIGS. 21 to 22, for example, a flat packing-shaped sealing member made of Teflon (registered trademark) is provided at a joint portion between the lid member 44 and the reference electrode through hole 66. It is desirable to improve the sealing performance by installing 65.
Instead of the flat packing seal member 65, a seal tape may be wound around the external screw 68c at the lower end 68b of the reference electrode connector member 68.

  With this configuration, an external screw that supports the reference electrode electrical connection member 58 is formed simply by providing the reference electrode through hole 66 that forms a screw hole in the lid member of the conventional bipolar cell for testing. The reference electrode connector member 68, which is a support member, can be screwed, almost all the components of the conventional bipolar cell for testing can be used, and there is almost no need to prepare a component of a new shape. Cost can also be reduced.

  Further, although not shown, the lid member 44 is detachably closed to the reference electrode through hole 66, for example, a set screw-shaped lid member (for example, although not shown, the through hole 76a is not provided, insulation is provided). When the test triode cell 10 is assembled, the cover member is removed from the reference electrode through hole 66 and the reference electrode connector member 68 as a support member is screwed into the reference electrode through hole 66. You may comprise so that it may wear.

With this configuration, when assembling the test triode cell 10, the cover member is removed from the reference electrode through-hole 66, and the reference electrode connector member 68, which is a support member, is used as the reference electrode through-hole 66. Since it is only necessary to screw it, it is easy to assemble.

  In addition, as will be described later, when such a triode cell for testing 10 is used to form a bipolar electrode, the lid member is closed in the reference electrode through hole 66 formed in the lid member 44. By simply doing, bipolarization can be easily performed. For example, a measurement test for measuring the potential of positive and negative electrodes can be performed.

In this case, although not shown, the insulating ferrule 76 in which the through hole 76a is not provided can be used as the lid member, although not shown.
In this case, when using as the test tripolar cell 10, the insulating ferrule 76 provided with the through-hole 76a is prepared, and both the insulating ferrule 76 not provided with the through-hole 76a are prepared for dipolarization. It is also possible to provide these as a set to the customer.

Further, as the closing member, a plug-shaped closing member that directly and detachably closes the reference electrode through hole 66 of the covering member 44 can be used for bipolarization . In this case, such a lid member is removed from the reference electrode through hole 66 of the lid member 44, and the reference electrode connector member 68 is removably screwed into the reference electrode through hole 66 formed in the lid member 44. Of course, it is possible to wear it and make it tripolar.

  FIG. 23 is a perspective view of the test bipolar cell of the present invention, and FIG. 24 is a cross-sectional view taken along the line GG of the test bipolar cell of FIG.

  The test bipolar electrode 80 of this embodiment has basically the same configuration as the test triode cell 10 of Embodiment 1 shown in FIGS. 1 to 16, and the same constituent members have the same configuration. Reference numerals are assigned and detailed description thereof is omitted.

  As shown in FIGS. 23 to 24, the test bipolar electrode 80 of this example is basically the same as the reference electrode in the test triode cell 10 of Example 1 shown in FIGS. 62 and the reference electrode electrical connection member 58 are removed to form a bipolar structure.

Further, the ring-shaped groove cover member 64 and the insulating tube 72 on the lower surface of the insulating guide member 28 are removed. Further, a blind ferrule 82 in which the through hole 76a is not provided in the insulating ferrule 76 is used.

  With this configuration, in the test triode cell 10 of the first embodiment, the bipolar electrode can be easily obtained by simply removing the reference electrode 62 and the reference electrode electrical connecting member 58. It can be configured to perform various types of measurement tests such as measurement tests for measurement.

Further, in the test bipolar cell 80 of the present invention, the reference electrode through hole 66 formed in the lid member 44 is closed with a blind ferrule 82 in which the through hole 76a is not provided in the insulating ferrule 76 which is a detachable closing member. doing.
In this embodiment, the blind ferrule 82 uses the same insulating material (Teflon (registered trademark)) as the insulating ferrule 76. However, since it does not have to be an insulating material, it may be a metal material such as SUS316.

With this configuration, the reference electrode through-hole 66 formed in the lid member 44 can be easily bipolarized by simply closing the reference electrode through-hole 66 with the insulating ferrule 76 (that is, the blind ferrule 82). For example, the charge / discharge test can be performed in the same manner as the conventional bipolar cell 100 for testing.

  Although not shown, the groove lid member 64 and the insulating tube 72 can be used as they are without being removed.

  25 is a perspective view of a test bipolar cell according to another embodiment of the present invention, and FIG. 26 is a cross-sectional view taken along line HH of the test bipolar cell of FIG.

The test bipolar cell 80 of this example has basically the same configuration as the test bipolar cell 80 of Example 6 shown in FIGS. 23 to 24, and the same constituent members have the same configuration. Reference numerals are assigned and detailed description thereof is omitted.

As shown in FIGS. 25 to 26, the test bipolar cell 80 of this example is basically shown in FIGS. 1 to 16 as in Example 6 shown in FIGS. 23 to 24. In the test triode cell 10 of Example 1, the reference electrode 62 and the reference electrode electrical connection member 58 are removed to form a bipolar structure.

  In the test bipolar cell 80 of this embodiment, the insulating tube 72 is removed and the outer diameter of the thermocouple 84 and the outer diameter of the reference electrode electrical connecting member 58 are the same. The insulating ferrule 76 of Example 1 provided with 76a is used.

  Further, instead of the reference electrode electrical connection member 58, a detachable thermocouple 84 is used, and the lower end 84 a of the thermocouple 84 is inserted into one of the liquid injection holes 32 of the insulating guide member 28. Has been. The lower end 84a of the thermocouple 84 extends to the vicinity of the liquid injection hole 32 formed in the reference electrode housing groove 60 so as to be exposed. Further, the upper end portion 84 b of the thermocouple 84 protrudes upward from the through hole 78 a of the connector nut 78.

With this configuration, it is possible to easily make a bipolar circuit by simply attaching the thermocouple 84 to the reference electrode through hole 66 formed in the lid member 44.
Moreover, when the bipolar cell for testing 80 thus polarized is placed in a constant temperature bath and a charge / discharge test is performed in a high temperature environment or a low temperature environment, for example, the temperature in the constant temperature chamber is The actual temperature inside the cell can be measured by the thermocouple 84.

  27 is a perspective view of a test bipolar cell according to another embodiment of the present invention, and FIG. 28 is a cross-sectional view taken along line II of the test bipolar cell of FIG.

  The test bipolar cell 80 of this example has basically the same configuration as the test bipolar cell 80 of Example 2 shown in FIGS. 14 to 16, and the same constituent members have the same configuration. Reference numerals are assigned and detailed description thereof is omitted.

As shown in FIGS. 27 to 28, the test bipolar electrode 80 of this embodiment is basically shown in FIGS. 1 to 16 as in the embodiment 6 shown in FIGS. In the test triode cell 10 of Example 1, the reference electrode 62 and the reference electrode electrical connection member 58 are removed to form a bipolar structure.

  In the test bipolar cell 80 of this embodiment, the ring-shaped groove cover member 64 and the insulating tube 72 on the lower surface of the insulating guide member 28 are removed. Furthermore, the insulating ferrule 76 of the first embodiment in which the through hole 76a is provided in the insulating ferrule 76 is used.

  Further, in place of the reference electrode electrical connecting member 58, a gas pipe 86 which is detachably attached is attached.

  Accordingly, the gas pipe 86, the through hole 70 of the reference electrode connector member 68, the reference electrode through hole 66 of the lid member 44, the liquid injection hole 32 of the insulating guide member 28, the liquid injection hole 32 on the lower surface of the insulating guide member 28, and Thus, a gas passage reaching the reference electrode housing groove 60 is formed.

By configuring in this way, it can be easily bipolarized, and a pressure gauge and / or a valve (not shown) are attached to the reference electrode through-hole 66 formed in the lid member 44 simply by mounting the gas pipe 86. For example, when a charge / discharge test is performed, the pressure inside the cell can be measured with a pressure gauge, and various types of measurement tests such as collection of gas generated inside can be performed.

  It is preferable to use a standard pipe size (outer diameter 1/8 inch) for the gas pipe 86 so that piping accessories such as a pressure gauge and a valve connected to the gas pipe 86 can be easily connected. For this reason, the insulating ferrule 76 is replaced, and another metal ferrule 76 matching the standard pipe size may be used, although not shown.

  FIG. 29 is a perspective view of a test bipolar cell according to another embodiment of the present invention.

The test bipolar cell 80 of this example has basically the same configuration as the test bipolar cell 80 of Example 8 shown in FIGS. 27 to 28, and the same constituent members have the same configuration. Reference numerals are assigned and detailed description thereof is omitted.

The test bipolar cell 80 of this example has a configuration in which an open / close valve 88 is provided in the gas pipe 86 of the test bipolar cell 80 of Example 8 shown in FIGS.

  With this configuration, it can be easily bipolarized, and when the charge / discharge test is performed, the gas generated inside the cell can be easily collected by opening and closing the on-off valve 88, and the generated gas The component analysis can be performed.

  The preferred embodiment of the present invention has been described above, but the present invention is not limited to this. For example, in the above embodiment, a so-called substantially disc-shaped test three-electrode cell 10 and a test two-electrode. Although applied to the cell 80, various modifications can be made without departing from the object of the present invention, such as the quadrangular prism-shaped rectangular triode cell 10 for test and the dipole cell 80 for test. It is.

  The present invention relates to a primary battery such as a manganese battery, an alkaline battery, a lithium battery, a lead storage battery, a nickel-cadmium battery, and the like used in electronic equipment such as a personal computer, a mobile phone, and a digital camera enclosed in a sealed container. It can be applied to secondary batteries such as nickel / hydrogen batteries and lithium ion batteries, double layer capacitors, capacitors and the like.

  More specifically, in such a storage battery, in order to know what voltage behavior is occurring inside the actual storage battery with respect to the contents in the enclosed container, for example, a reference electrode It can be used in the same way as a conventional bipolar cell for testing, using a tripolar cell for testing to carry out measurements such as the potential measurement of positive and negative electrodes, and a tripolar cell for testing. For example, the present invention can be applied to a test bipolar cell for performing a measurement test such as measurement of temperature inside a battery by a thermocouple, measurement of pressure, and collection of gas generated inside.

10 Triode Cell 11 for Test 11 Gap 12 Container Body 12a Opening 14 Housing 15 Electrode Groove 16 One Electrode 18 Fastening Flange 20 Embedded Bolt 20a Screw Part 20b Insulating Washer 22 Inner Seal Member 24 Guide Groove 26 Separator 28 Insulation Guide Member 28a Side wall 30 Groove portion 32 Injection hole 32a Insertion holes 32c, 32d, 32e Injection hole 34 Other electrode 36 Electrode holding member 38 Holding member body 40 Spring support portion 42 Compression spring 44 Lid member 46 Fastening hole 48 Insulating bush 50 Outside Seal member 52 Fastening nut 54 Terminal screw 56 Terminal screw 58 Reference electrode electrical connection member 58a Lower end 58b Upper end 58c Step 60 Reference electrode housing groove 62 Reference electrode 64 Groove cover member 64a Injection hole 65 Seal member 66 For reference electrode Through hole 66a Internal screw 68 Reference electrode connector -Member 68a upper end 68b lower end 68c external thread 70 through hole 72 insulating tube 74 inclined recess 76 insulating ferrule 76a through hole 78 connector nut 78a through hole 80 test bipolar cell 82 blind ferrule 84 thermocouple 84a lower end 84b upper end 86 gas pipe 88 Open / close valve 100 Conventional bipolar cell 101 for test 101 Gap 102 Container body 102a Opening portion 104 Holding portion 105 Electrode groove portion 106 One electrode 108 Flange 110 Embedded bolt 110a Screw portion 110b Insulating washer 112 Inner seal member 114 Guide groove portion 116 Separator 118 Insulation guide member 118a Side wall 120 Groove 122 Injection hole 124 Other electrode 126 Electrode holding member 128 Holding member main body 130 Spring support 132 Compression spring 134 Lid member 136 Fastening hole 138 Insulating bush 140 Outer seal member 142 Fastening nut 144 Terminal screw 146 Terminal screw 200 Conventional test triode cell 202 Lower body 204 Upper body 206 Reference electrode body 208 Housing 210 Reference electrode 212 Lower separator 214 Upper separator 216 One electrode 218 Lower insulating guide member 220 Lower electrode pressing member 222 Pressing member main body 224 Spring support portion 226 Lower compression spring 228 Other electrode 230 Upper insulating guide member 232 Upper electrode pressing member 234 Pressing member main body 236 Spring support portion 238 Upper compression spring 240 Tightening nut 244 Terminal 246 Terminal

Claims (13)

A sealed container for testing and evaluating electrode materials used for storage batteries by three-electrode measurement,
A container main body that includes a storage unit that stores the contents of the storage battery, and is electrically connected to one of the electrodes stored in the storage unit;
A lid member that detachably closes the opening of the container body and is electrically connected to the other electrode housed in the housing portion of the container body;
One electrode and the other electrode housed in an insulated state in the housing portion of the container body,
A reference electrode disposed in the container body in an insulated state from the one electrode and the other electrode;
A reference electrode electrical connection member for electrical connection to the reference electrode, wherein the reference electrode through hole formed in the lid member is insulated from the outside and is detachably disposed. An electrical connection member for a reference electrode,
An insulating guide member disposed on the outer periphery of the one electrode and the other electrode, and containing a reference electrode;
A triode cell for testing, comprising:   The reference electrode through hole formed in the lid member and the insertion hole for inserting the reference electrode electrical connection member formed in the insulating guide member are formed at positions where they coincide. Item 3. A test triode cell according to Item 1. The insulating guide member includes a reference electrode housing groove and a groove lid member that covers the reference electrode housed in the reference electrode housing groove in an insulated state,
3. The test triode cell according to claim 1, wherein the groove lid member is formed with a liquid injection hole in which the reference electrode and one electrode are connected by an electrolyte solution. 4.   The support member for supporting the electrical connection member for reference electrode is fixed to the through hole for reference electrode or screwed to the lid member. Triode cell for testing.   When assembling the test triode cell, the lid member is detachably closed in the through hole of the support member, and the reference electrode through hole of the lid member is detachably closed. The test triode cell according to claim 4, wherein the lid member is configured to be removed from the through hole of the support member. A lid member that detachably closes the reference electrode through-hole of the lid member, and is configured to remove the lid member from the reference electrode through-hole when assembling the test triode cell; The test triode cell according to claim 4, wherein:   The fastening flange formed on the container body and the outer peripheral part of the lid member are fastened with a fastening member, so that the opening of the container body is detachably closed with the lid member. The triode cell for testing according to any one of claims 1 to 6.   8. The test triode cell according to claim 7, wherein at least two sealing members are disposed between a fastening flange formed on the container body and an outer peripheral portion of the lid member. .   The test triode cell according to any one of claims 1 to 8, wherein the test triode cell is a sealed container for test evaluation of an electrode material or the like used for a coin-type storage battery.   The test triode cell according to any one of claims 1 to 9, wherein the reference electrode electrical connection member is formed with a stepped portion having a large locking diameter.   The test tripolar cell according to any one of claims 1 to 10, wherein the reference electrode electrical connecting member is removed to be bipolar.   12. The test bipolar cell according to claim 11, wherein the reference electrode through hole formed in the lid member is closed with a detachable closing member.   13. The test bipolar cell according to claim 11, wherein a thermocouple or a gas pipe is detachably attached to the reference electrode through hole formed in the lid member. .

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