JP2007095455A - Ceramic vessel, and battery or electric double layer capacitor using it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ceramic vessel capable of effectively using a space on a surface of an electric circuit board when it is mounted on the electric circuit board; and to provide a high-performance battery or electric double layer capacitor using it. <P>SOLUTION: This ceramic vessel A is provided with: a ceramic base body 1 having a recessed part 1a for housing a battery element or an electric double layer capacitor element therein on its upper surface; first metalized layers 1b formed from the bottom surface of the recessed part 1a to side surfaces of the ceramic base body 1; a second metalized layer 1c formed on the upper surface of the ceramic base body 1 located outside an opening of the recessed part 1a; first electrodes 2a electrically connected to the first metalized layers 1b and formed on the plurality of outer side surfaces of the ceramic base body 1; and second electrodes 2b formed on the plurality of the same outer side surfaces electrically independently of the first electrodes 2a and electrically connected to the second metalized layer 1c. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a thin battery that is used in communication equipment such as a cellular phone and has excellent mountability and can effectively prevent leakage of an electrolyte.

  In recent years, portable devices typified by mobile phones, portable computers, camera-integrated video tape recorders, etc. have been remarkably developed, and further miniaturization and weight reduction have been demanded. In addition, the demand for batteries as power sources for these portable devices continues to increase, and research on reducing the size and weight by increasing the energy density of the batteries is actively conducted. In particular, the lithium battery is a battery using lithium with a small atomic weight and a large ionization energy, so that it is possible to obtain a high energy density, to achieve a reduction in size and weight, and to be a battery that can be recharged more actively. It has been researched and has now been used for a wide range of applications including power supplies for portable devices.

  In addition, the electric double layer capacitor uses the electrostatic adsorption and desorption action of ions of the electric double layer formed at an extremely short distance at the interface where two different phases (for example, a solid electrode and an electrolytic solution) contact each other. Thus, the electric element can be charged or discharged with electric energy.

  In recent years, a thin secondary battery F or electric double layer capacitor F in which a battery element or electric double layer capacitor element composed of two electrode plates and a separator and an electrolyte as shown in FIG. Proposed.

The conventional secondary battery F and electric double layer capacitor F include a ceramic substrate 11 made of an aluminum oxide (Al ₂ O ₃ ) sintered body having a metallized layer 12b formed on the bottom surface of a recess, and iron (Fe). A separator B-3 impregnated with an electrolytic solution B-4 in a container basically composed of a lid 14 made of a metal such as nickel (Ni) -cobalt (Co) alloy is provided as a positive electrode plate B- 1 or a sealed structure disposed between the metallized layer 12b and the lid 14 in a state of being sandwiched between the polarizable electrode plate B-1 and the negative electrode plate B-2 or polarizable electrode plate B-2. ing. Charging / discharging in the metallized layer 12b and the lid body 14 is performed via the first and second electrodes C and D formed on the lower surface of the ceramic substrate 11 (see, for example, Patent Document 1 below).

In the battery F or the electric double layer capacitor F using the ceramic substrate 11 shown in FIG. 6, since the ceramic is excellent in chemical resistance, the ceramic substrate 11 is attacked by the electrolytic solution B-4 containing an organic solvent, an acid and the like. Therefore, the performance of the battery F or the electric double layer capacitor F can be maintained satisfactorily without the impurities dissolved from the ceramic substrate 11 being mixed into the electrolyte B-4 and degrading the electrolyte B-4. Can do.
JP 2004-227959 A (page 4-6, FIG. 1)

  The battery F or the electric double layer capacitor F using the ceramic substrate 11 has been made thinner than the conventional battery or electric double layer capacitor using the metal can, but in recent times, more electric circuits have been realized. Space saving of the substrate is desired. However, if the side wall thickness of the ceramic base 11 is further reduced, there arises a problem that the bending strength of the ceramic base 11 is reduced. Therefore, there is a limit to reducing the side wall thickness.

  Further, if the size of the ceramic substrate 11 in plan view is reduced, it becomes difficult to process the ceramic substrate 11, and the battery or electric double layer capacitor element housed in the ceramic substrate 11 must be downsized. As a multilayer capacitor, there arises a problem that a predetermined performance cannot be exhibited. Therefore, there is a limit to downsizing the shape of the ceramic substrate 11 in plan view.

  Therefore, the present invention has been completed in view of the above problems, and its object is to mount a battery or an electric double layer capacitor on an electric circuit board as a means for realizing miniaturization required for portable equipment. Sometimes, the object is to provide a ceramic container capable of effectively utilizing the space on the surface of the electric circuit board and a battery or electric double layer capacitor using the same.

  The ceramic container of the present invention includes a ceramic base having a concave portion in which a battery element or an electric double layer capacitor element is accommodated in an upper surface, and a first metallized layer formed from a bottom surface of the concave portion to a side surface of the ceramic base. A second metallization layer formed on the upper surface of the ceramic base located outside the opening of the recess, and electrically connected to the first metallization layer, and on the outer side surfaces of the ceramic base The first electrode formed and the outer plurality of side surfaces on which the first electrode is formed are formed independently of the first electrode and electrically connected to the second metallization layer. And a second electrode formed.

  In the ceramic container of the present invention, preferably, the first electrode and the second electrode are arranged on all outer side surfaces of the ceramic substrate.

  The battery of the present invention includes a ceramic container having the above-described configuration, one electrode plate placed on the bottom surface of the recess and electrically connected to the first metallization layer, and an electrolyte solution on the upper surface of the one electrode plate. The other electrode plate placed so as to be in close contact with the impregnated separator, and at least the lower main surface are made conductive, are in contact with and electrically connected to the other electrode plate, and the second electrode plate And a lid body electrically connected to the metallized layer and bonded to the upper surface of the ceramic base so as to close the recess.

  The electric double layer capacitor of the present invention includes a ceramic container having the above structure, a first polarizable electrode plate placed on the bottom surface of the recess and electrically connected to the first metallized layer, and the first A second polarizable electrode plate placed so as to be in close contact with the upper surface of the polarizable electrode plate via a separator impregnated with an electrolyte, and at least the lower main surface is made conductive, A lid that is in contact with and electrically connected to the polar electrode plate and is electrically connected to the second metallization layer and is bonded to the upper surface of the ceramic base so as to close the recess. It is characterized by.

  The ceramic container of the present invention includes a ceramic base having a recess on the upper surface in which a battery element or an electric double layer capacitor element is accommodated, a first metallization layer formed from the bottom of the recess to the side of the ceramic base, and a recess. A second metallized layer formed on the upper surface of the ceramic substrate located outside the opening of the first metallized layer, and a first metallized layer electrically connected to the first metallized layer and formed on a plurality of outer sides of the ceramic substrate. An electrode and a second electrode electrically formed independently of the first electrode and electrically connected to the second metallization layer on a plurality of outer side surfaces on which the first electrode is formed. Therefore, in the battery or electric double layer capacitor using the ceramic container of the present invention, the outer side surface is surface-mounted on the electric circuit board, and the first electrode and the second electrode are electrically connected to the electric circuit board. And connected, can be implemented while sideways battery or electric double layer capacitor to the electric circuit board. Thus, by mounting the battery or the electric double layer capacitor sideways with the side surface of the ceramic substrate facing down, the mounting area can be saved, and the electric circuit board can be further miniaturized. In other words, the ceramic container is large in plan view but thin, so if there is a space in the height direction above the electric circuit board, mount the ceramic container sideways with the side of the ceramic container down. This is because the area can be saved.

  Further, since the first electrode and the second electrode are led out to the plurality of outer side surfaces, electrical connection with the electric circuit board is possible on each outer side surface.

  Preferably, when the first electrode and the second electrode are disposed on all the outer side surfaces of the ceramic substrate, the outer electrode can be electrically connected to the electric circuit board on any outer side surface. It is not necessary to align the directionality of the side surface of the ceramic container when mounted on the circuit board. This simplifies the preparation process at the time of mounting, and improves the work efficiency of the mounting.

  In addition, according to this configuration, the mounting area can be saved, so that it is not necessary to further reduce the thickness of the side wall of the ceramic substrate, and it is not necessary to reduce the size of the ceramic substrate in plan view. Therefore, processing of the ceramic substrate is easy, the bending strength of the ceramic substrate is not lowered, and the battery or electric double layer capacitor element housed in the ceramic substrate has a predetermined performance without being downsized. A battery or an electric double layer capacitor that can be mounted in a space-saving manner can be provided.

  The battery of the present invention includes a ceramic container having the above-described structure, one electrode plate placed on the bottom surface of the recess and electrically connected to the first metallization layer, and a separator in which the upper surface of the one electrode plate is impregnated with an electrolyte. The other electrode plate placed so as to be in close contact with each other, and at least the lower main surface is made conductive, and is in contact with and electrically connected to the other electrode plate and electrically connected to the second metallized layer. And a lid bonded to the upper surface of the ceramic base so as to close the recess, and can be mounted sideways with the side face down by the ceramic container of the present invention, It is possible to cope with the further space saving of the electric circuit board in recent years, and the battery can be electrically connected to the electric circuit board on any outer side surface and can improve the working efficiency of mounting.

  The electric double layer capacitor of the present invention includes a ceramic container having the above-described configuration, a first polarizable electrode plate placed on the bottom surface of the recess and electrically connected to the first metallization layer, and a first polarizability A second polarizable electrode plate placed in close contact with the upper surface of the electrode plate via a separator impregnated with an electrolyte, and at least a lower main surface is made conductive, and the second polarizable electrode plate A lid that is in contact with and electrically connected to the second metallization layer and is bonded to the upper surface of the ceramic base so as to close the recess. With the ceramic container of the invention, it can be mounted sideways with the side down, and it can cope with the further space saving of the electric circuit board in recent years, and any outer side surface can be electrically connected to the electric circuit board. Is possible and the efficiency of implementation It is possible to improve the electric double layer capacitor.

  The ceramic container of the present invention and the battery or electric double layer capacitor using the same will be described in detail below. FIG. 1A is a sectional view showing an example of an embodiment of a ceramic container of the present invention, FIG. 1B is a plan view of the ceramic container of FIG. 1 (c) shows a perspective view of the outer side surface of the ceramic container of FIG. 1 (a). 2A is a cross-sectional view showing another example of the embodiment of the ceramic container of the present invention, and FIG. 2B is a plan view of the ceramic container of FIG. Further, FIG. 2 (c) shows a perspective view of the outer side surface of the ceramic container of FIG. 2 (a). FIG. 3A is a sectional view showing still another example of the embodiment of the ceramic container of the present invention, and FIG. 3B is a plan view of the ceramic container of FIG. Further, FIG. 3 (c) shows a perspective view of the outer side surface of the ceramic container of FIG. 3 (a). FIG. 4 is a sectional view showing an example of a battery or an electric double layer capacitor using the ceramic container of the present invention shown in FIG. FIGS. 5A and 5B are cross-sectional views showing examples of other batteries or electric double layer capacitors using a ceramic container according to still another example of the embodiment of the present invention. 1 (b) and 1 (c), 2 (a) and 2 (b), 2 (c), 3 (a), 3 (b) and 3 (c). In order to show the conductive parts such as the metallized layer in an easy-to-understand manner, hatching was applied. And these parts do not show a cross section. Further, in this specification, the terms “upper, lower, left, and right” merely describe the positional relationship on the drawing, and do not mean the positional relationship during actual use.

  In the embodiment shown in FIGS. 1 to 5, 1 is a ceramic substrate, 1a is a recess formed on the upper surface of the ceramic substrate 1, and 1b is a first metallization formed from the bottom surface of the recess 1a to the side surface of the ceramic substrate 1. The layer 1c is electrically connected to the first metallized layer 1b. The second metallized layer is formed on the upper surface of the ceramic substrate 1 located outside the opening of the recess 1a, that is, around the recess 1a. The first electrodes 2b formed on the outer side surfaces of the ceramic substrate 1 are formed on the outer side surfaces on which the first electrode 2a is formed, independently of the first electrode 2a, The second electrode electrically connected to the second metallized layer 1c, A is the ceramic container of the present invention, and B is the battery or electric double layer capacitor of the present invention. In addition, the same code | symbol is attached | subjected to the site | part which shows the same site | part in each figure.

  The ceramic container A of the present invention includes a ceramic base 1 having a concave portion 1a in which a battery element or an electric double layer capacitor element is accommodated in an upper surface, and a first formed from a bottom surface of the concave portion 1a to a side surface of the ceramic base 1. The ceramic substrate 1 is electrically connected to the metallized layer 1b, the second metallized layer 1c formed on the upper surface of the ceramic substrate 1 located outside the opening of the recess 1a, and the first metallized layer 1b. Of the first electrode 2a formed on the plurality of outer side surfaces, preferably all the outer side surfaces, and on the outer side surfaces on which the first electrode 2a is formed. And a second electrode 2b formed independently and electrically connected to the second metallized layer 1c.

Such a ceramic substrate 1 is made of ceramics such as an Al ₂ O ₃ sintered body, a mullite (3Al ₂ O ₃ · 2SiO ₂ ) sintered body, an aluminum nitride (AlN) sintered body, a glass ceramic, and the like. For example, when the ceramic substrate 1 is made of an Al ₂ O ₃ sintered material, it is manufactured as follows. That is, an appropriate organic binder, a solvent, and the like are added to and mixed with raw material powders such as Al ₂ O ₃ , silicon oxide (SiO ₂ ), magnesium oxide (MgO), and calcium oxide (CaO) to form a slurry-like insulating paste. This insulating paste is formed into a ceramic green sheet (hereinafter also referred to as a green sheet) by a doctor blade method or a calender roll method, and cut into a required size. Next, an appropriate punching process is performed to form the recesses 1a in a plurality of green sheets selected from them.

  Then, a metal paste mainly composed of a refractory metal powder such as tungsten (W), molybdenum (Mo), manganese (Mn) or the like is printed and applied to these green sheets on a predetermined portion, and the first metallized layer 1b and A metal paste to be the second metallized layer 1c is printed and applied. These green sheets are laminated after the metal paste is printed and a green sheet laminate to be the ceramic substrate 1 is formed. The first metallized layer 1b is an interlayer conductor that is partially formed between the green sheets. Further, the second metallized layer 1c is formed on the entire upper surface of the ceramic base 1 in the drawing so as to surround the concave portion 1a. However, the second metallized layer 1c is not necessarily formed on the entire circumference. 5 and the second electrode 2b need only be formed at a position where they can be electrically connected.

  The first electrode 2a and the second electrode 2b are formed by forming a green sheet laminate to be the ceramic substrate 1, and then forming a metal paste to be the first electrode 2a and the second electrode 2b on the side of the green sheet laminate. Are applied by screen printing so as to be electrically connected to the first metallized layer 1b and the second metallized layer 1c, respectively. Alternatively, as shown in FIG. 2 (d), the first electrode 2a and the second electrode 2b are formed as castellation conductors in which a conductor is formed on the inner surface of a concave groove formed on the side surface of the ceramic substrate 1. In this case, a through-hole serving as a castellation is formed in the green sheet, and then a metal paste mainly composed of a refractory metal powder such as W, Mo, or Mn is sucked and printed on the inner surface of the through-hole. Thereafter, it is formed by cutting unnecessary portions of the green sheet. Since it can be formed by the suction printing method, the step of forming the first and second electrodes 2a and 2b in a separate step on the side surface of the ceramic substrate 1 can be reduced. Further, the brazing material can be accumulated in the gap formed between the first and second electrodes 2a and 2b and the mounting electrode of the electric circuit board to form a good meniscus, and the bonding strength of the brazing material can be increased. Can do. Alternatively, the mounting electrode on the electric circuit board side is provided on the upper surface of the projecting portion protruding from the main surface, or the side surface projecting portion of the ceramic substrate 1 on which the first and second electrodes 2a and 2b are not formed is fitted. By providing a recess on the electric circuit board side, positioning during mounting is facilitated.

  Preferably, the mounting electrode of the electric circuit board is flattened without protruding to the main surface, and a brazing material is accumulated between the first and second electrodes 2a, 2b and the mounting electrode of the electric circuit board. The latter configuration is preferable in that the electric circuit board can be easily manufactured and can be efficiently manufactured. With this configuration, the brazing material accumulated between the castellation conductor and the wiring provided on the electric circuit board also has an effect that it is difficult for the brazing material to flow out from the castellation conductor, and the brazing material flows to unnecessary portions. Can be effectively prevented. In this case, the depth of the castellation is preferably about 0.1 mm to 0.3 mm.

  As an example of a method of forming the first electrode 2a and the second electrode 2b on the ceramic substrate 1, the first electrode 2a is entirely below the outer side surface of the ceramic substrate 1 as shown in FIG. The second electrode 2b is provided over the entire circumference and above the outer side surface of the ceramic substrate 1, or as shown in FIG. 2C, the first electrode 2a is provided over the circumference. 1 is provided on one side (right end) below the outer side surface of the first electrode, and the second electrode 2b is provided on the other side (left end) above the outer side surface of the ceramic substrate 1, or FIG. As shown in (c), the first electrode 2a is provided so as to extend to one side portion in the width direction of the outer side surface of the ceramic substrate 1 and the outer side surface adjacent to one side portion of the outer side surface, The second electrode 2b is Etc. are provided so as to extend the width direction of the other side of the outer side surface of the electrochromic substrate 1 and on the outer side surface adjacent to the other side of the outer side, it can be in various forms.

  Here, when the battery element is accommodated in the ceramic container A and functions as the battery B, since either the first electrode 2a or the second electrode 2b has a polarity to be a positive electrode or a negative electrode, the first electrode It must be possible to distinguish between 2a and the second electrode 2b. In the case shown in FIG. 1C or FIG. 2C, the lower principal surface side of the ceramic substrate 1 is the first electrode 2a, and the upper principal surface side of the ceramic substrate 1 is the second electrode 2b. It can be easily determined and there is no problem. As a specific example of the method for discriminating the first electrode 2a and the second electrode 2b, the lid 5 attached so as to close the concave portion 1a of the ceramic container A is used as a mark for discrimination. In the case of the form shown in FIG. 3C, it is impossible to discriminate between the positions where the first electrode 2a and the second electrode 2b are formed. Therefore, the first electrode 2a and the second electrode 2b What is necessary is just to change the size (area), shape, etc. Then, when discriminating between the first electrode 2a and the second electrode 2b, the difference in size, shape and the like between the first electrode 2a and the second electrode 2b is used as a mark.

  Since the first electrode 2a and the second electrode 2b are formed in the same outer side surface of the ceramic base 1, the first electrode 2a and the second electrode 2b are formed in a narrow area on one side of the ceramic base 1. Both electrodes 2b are formed. Therefore, when an insulation distance between the first electrode 2a and the second electrode 2b is required, the first electrode 2a and the second electrode 2b are made of ceramic as shown in FIG. 2 or FIG. It is good to provide at the both ends of the width direction (one side part and the other side part which become the left-right direction of an outer side surface) of the base | substrate 1 side surface.

  Preferably, a groove is formed in the ceramic substrate 1 in a region where the first electrode 2a and the second electrode 2b between the first electrode 2a and the second electrode 2b are opposed to each other. (Not shown) With this configuration, when the first electrode 2a and the second electrode 2b are joined to the electric circuit board by brazing or soldering, the first electrode 2a and the second electrode 2b It is possible to effectively prevent the occurrence of an electrical short circuit due to the brazing material or solder.

  Further, electrical derivation from the first metallized layer 1b to the first electrode 2a and electrical derivation from the second metallized layer 1c to the second electrode 2b were formed inside the ceramic substrate 1. It may be performed through a through conductor. In that case, it is formed by previously forming a through hole serving as a through conductor at a predetermined position of the green sheet forming the through conductor and filling the through hole with a metal paste. . That is, normally, the ceramic substrate 1 is formed by sequentially laminating green sheets from the bottom to the top. However, when conducting electrical derivation by a through conductor from the first metallized layer 1b to the first electrode 2a. The green sheets are sequentially laminated from left to right or from right to left.

The plurality of green sheets to be the ceramic substrate 1 are bonded to each other by being physically bonded to each other at a temperature of, for example, about 85 ° C. and a pressure of ⁴ to 5 MPa / cm ² before they are fired. Will be. At this time, preferably, as shown in FIGS. 1 (a), 1 (b), 2 (a), 2 (b), 3 (a), and 3 (b), the bottom surface of the recess 1a. The insulating paste layer 3 mainly composed of a ceramic powder such as an Al ₂ O ₃ sintered body is applied along the outer edge of the ceramic substrate 1a, so that the surface of the side wall and the bottom of the concave portion 1a of the ceramic substrate 1a are formed. It is possible to reliably form an airtight bonded state with the surface. The green sheet laminate thus obtained is fired at a temperature of about 1600 ° C. in a reducing atmosphere to produce a ceramic substrate 1, which becomes the ceramic container A of the present invention.

  The ceramic substrate 1 is not easily attacked by the electrolytic solution B-4 containing an organic solvent, an acid, and the like. Therefore, impurities dissolved from the ceramic substrate 1 are mixed in the electrolytic solution B-4 and almost deteriorate the electrolytic solution B-4. There is nothing. For this reason, the ceramic container A which can maintain battery performance or electric double layer capacitor performance favorably can be obtained. Further, when the ceramic substrate 1 is made of an AlN sintered body, the heat during operation can be efficiently dissipated to the outside, so that the electrolytic solution B-4 is hardly thermally denatured, A highly reliable ceramic container A can be obtained. Preferably, the ceramic substrate 1 is made of an AlN sintered body, and even when a battery or an electric double layer capacitor is mounted on an electric circuit board in a small area on one side of the ceramic substrate 1, the heat during operation is efficient. The battery performance or the electric double layer capacitor performance can be maintained very well.

  In addition, since the electrolytic solution B-4 is accommodated in the ceramic base 1 having excellent airtightness and heat resistance, the ceramic base 1 is subject to gaps and deterioration even when exposed to a temperature cycle test, so that the electrolytic solution B- 4 will not leak. In addition, since the airtightness is satisfactorily maintained by the ceramic substrate 1, it is possible to effectively prevent moisture, oxygen, and the like that deteriorate battery performance from entering the electrolytic solution B-4 from the outside.

  Then, by providing the ceramic container A thus produced with the first electrode 2a and the second electrode 2b, the battery B or the electric double layer capacitor B using the ceramic container A has the first electrode 2a and the second electrode 2b. It can be mounted with the electrode 2a and the second electrode 2b on the lower side and electrically connected to the electric circuit board, with the battery B or the electric double layer capacitor B oriented sideways with respect to the electric circuit board. . Thus, by mounting the battery B or the electric double layer capacitor B sideways with the side surface of the ceramic container A facing down, the mounting area can be saved, and the electric circuit board can be further miniaturized. That is, since the ceramic container A is large in plan view (see the plan view) but thin in the height direction (see the sectional view), the ceramic container A has a space in the height direction above the electric circuit board. This is because the mounting area can be saved by mounting the container A sideways with the side face down.

  Thus, in order to mount the ceramic container A sideways with the side face down, it is preferable that the ceramic container A has a polygonal column shape whose outer side surface is a plane, more preferably a rectangular parallelepiped shape, more preferably a square shape in plan view. A rectangular parallelepiped is good. When the first electrode 2a and the second electrode 2b are formed on all outer side surfaces, the shape can be mounted on the electric circuit board regardless of which side is the lower side. The battery B or the electric double layer capacitor B can be used. In the case of a rectangular parallelepiped that is not square in a plan view, the battery B or the electric double layer capacitor B whose space in the height direction can be adjusted by the lower side surface can be obtained. For example, when mounting with the long side facing down, the space in the height direction may be small, and when mounting with the short side facing down, the space in the height direction may be slightly Instead, the battery B or the electric double layer capacitor B with a small mounting space can be obtained. Also in this case, the battery B or the electric double layer capacitor B may be mounted with either the long side or the short side facing down.

  As a method of mounting the battery B or the electric double layer capacitor B with the side face down, that is, in a state where the battery B or the electric double layer capacitor B is turned sideways, the concave portion 1a of the ceramic container A is manufactured after the ceramic container A is manufactured. The battery element or the electric double layer capacitor element is put inside, and the lid 5 is joined to the upper surface of the ceramic container A so as to close the recess 1a. After the lid 5 is joined, a plurality of batteries B or electric double layer capacitors B are arranged on the feeder of the mounting apparatus. After the battery B or the electric double layer capacitor B is arranged on the feeder, the feeder on which the battery B or the electric double layer capacitor B is arranged is laid sideways so that the side surface of the battery B or the electric double layer capacitor B faces down. In this state, the battery B or the electric double layer capacitor B is set in a mounting device on an external electric circuit board. Then, an external electric circuit board on which a conductive adhesive such as a solder paste is applied in advance is prepared where the battery B or the electric double layer capacitor B is mounted, and the battery B or electric double layer set sideways on the feeder The capacitor B is mounted at a predetermined position on the external electric circuit board by a component mounting machine such as a suction nozzle.

  When the battery B or the electric double layer capacitor B is arranged in the feeder, the battery B or the electric double layer capacitor B may be arranged with the same directionality, and the battery B or the electric double layer capacitor B has the directionality. You may arrange without arranging.

  Preferably, the battery B or the electric double layer capacitor B should be arranged in the feeder with the same directionality, and as a method of arranging with the specific directionality, for example, the lid 5 is recognized by the camera as a mark. Align them in the feeder using a component mounting machine such as a suction nozzle. When aligning, the side to which the lid 5 is joined is aligned with the left side, or the side to which the lid 5 is joined is aligned with the right side. For example, the shape of the first electrode 2a and the second electrode 2b formed on the side surface of the battery B or the electric double layer capacitor B is recognized by a camera as a mark, and the first electrode 2a and the second electrode 2b The components are aligned in the feeder using a component mounting machine such as a suction nozzle so that the shapes are uniform. Thus, when the battery B or the electric double layer capacitor B is aligned in a state in which the direction of the battery B or the electric double layer capacitor B is aligned in the feeder, the battery B or the electric double layer capacitor B is mounted on the external electric circuit board. Therefore, it is not necessary to mount the battery B or the electric double layer capacitor B while adjusting the directivity of the battery B or the electric double layer capacitor B, and the battery B or the electric double layer capacitor B can be efficiently mounted on the external electric circuit board.

  Further, when it is not necessary to align the direction of the battery B or the electric double layer capacitor B in the feeder, the battery B or the electric double layer capacitor B is arranged in the feeder by a conventionally known transfer method. According to this method, the directivity of the battery B or the electric double layer capacitor B arranged in the feeder is not uniform, and when the battery B or the electric double layer capacitor B is mounted on the external electric circuit board, It is necessary to mount the battery B or the electric double layer capacitor B while adjusting the directivity of the battery B or the electric double layer capacitor B, which complicates the work of mounting the battery B or the electric double layer capacitor B on the external electric circuit board.

  Further, according to this configuration, it is not necessary to further reduce the thickness of the side wall of the ceramic base 1 in order to reduce the mounting space on the external electric circuit board, and the bending strength of the ceramic base 1 is prevented from being lowered. it can. In addition, it is not necessary to reduce the size of the ceramic substrate 1 in plan view, the ceramic substrate 1 can be easily processed, and the battery or the electric double layer capacitor element housed in the ceramic substrate 1 can be of a predetermined size. B or the electric double layer capacitor B can exhibit predetermined performance.

  Preferably, the first metallized layer 1b and the second metallized layer 1c formed on the ceramic substrate 1 and the exposed surfaces of the first electrode 2a and the second electrode 2b have excellent corrosion resistance and solder. A metal having excellent wettability, specifically, a Ni layer having a thickness of 1 to 12 μm may be deposited. With this configuration, it is possible to prevent oxidative corrosion of each conductor made of metallization and to effectively prevent the metal component from being eluted from each conductor.

  If the thickness of the Ni layer is less than 1 μm, it is difficult to prevent the oxidative corrosion of each conductor made of metallization and to effectively prevent the metal component from eluting from each conductor, and the battery performance deteriorates. It becomes easy to do. On the other hand, if the thickness of the Ni layer exceeds 12 μm, it takes a long time to form the plating, so that the mass productivity is likely to be lowered and the electric resistance is likely to be increased.

  More preferably, a metal plating layer made of a gold (Au) layer having a thickness of 0.3 to 5 μm may be sequentially deposited on the Ni layer by a plating method or the like. With this configuration, the wettability with the solder can be improved and oxidation corrosion can be prevented.

  If the thickness of the Au layer is less than 0.3 μm, it is difficult to form an Au layer having a uniform thickness, and the Au layer is likely to be very thin or no Au layer is formed. The prevention effect and wettability with solder are likely to be lowered. On the other hand, if the thickness of the Au layer exceeds 5 μm, it takes a long time to form the plating, and the mass productivity tends to decrease.

  In particular, the Au plating layers deposited on the surfaces of the first metallized layer 1b and the second metallized layer 1c formed inside the ceramic container A have a property that they are not easily attacked by the acidic electrolyte B-4. Therefore, it acts to effectively suppress the elution of W or the like, which is the main metal component of the first metallized layer 1b and the second metallized layer 1c, into the electrolytic solution B-4 by the voltage due to charging / discharging. . Further, since the Ni and Au plating layers deposited on the first electrode 2a and the second electrode 2b improve the wettability with the solder, the wiring conductor on the surface of the electric circuit board (not shown) And the bonding strength becomes stronger.

Here, when the insulating paste layer 3 mainly composed of ceramic powder such as an Al ₂ O ₃ sintered body was deposited and fired at a position serving as the outer edge of the bottom surface of the concave portion 1a, it was obtained. The ceramic substrate 1 can hold the recess 1a in an airtight manner, and can effectively prevent the electrolyte from leaking to the outside even if the electrolyte is sealed in the inner surface of the recess 1a. Can function with a predetermined performance over a long period of time.

  Preferably, as shown in FIGS. 1 (a), 1 (b), 2 (a), 2 (b), 3 (a), and 3 (b), the bottom surface of the recess 1a is formed. The first metallized layer 1b to be formed is preferably formed by depositing a protective metal layer 4 such as aluminum (Al) by a known sputtering method, vapor deposition method or the like. In this configuration, since the protective metal layer 4 is made of a material that is not easily corroded by the electrolytic solution B-4 such as Al, the first metallized layer 1b can be protected from the electrolytic solution B-4 by the protective metal layer 4. It is possible to effectively prevent the first metallized layer 1b from being corroded by the electrolytic solution B-4. As a result, the electrical resistance of the first metallized layer 1b can be prevented from increasing, and the first metallized layer 1b can be prevented from dissolving in the electrolytic solution B-4, so that the battery B or the electric double layer capacitor B can be prevented. This performance can be maintained well over a long period of time.

  More preferably, although not shown, a protective metal layer such as Al is preferably deposited on the surface of the second metallized layer 1c, and the second metallized layer 1c is corroded by the electrolyte B-4. And the performance of the battery or the electric double layer capacitor can be maintained extremely well. Since the second metallized layer 1c is located at a portion sandwiched between the upper surface of the ceramic substrate 1 and the lower surface of the lid 5, there is little contact with the electrolytic solution B-4 sealed in the inner surface of the recess 1a. Therefore, even if the protective metal layer is not applied to the second metallized layer 1c, the performance of the battery or the electric double layer capacitor is not greatly deteriorated.

  When the insulating paste layer 3 is deposited, the protective metal layer 4 is formed on the first metallized layer 1b and the insulating paste layer 3 from the bottom of the recess 1a, and further on the second metallized layer 1c and on the side wall of the ceramic substrate 1. It is good to form over the upper surface of. The protective metal layer 4 is formed by a well-known sputtering method or vapor deposition method, and a mask made of stainless steel (SUS) or Fe—Ni alloy is disposed in advance so as to cover a portion where the protective metal layer 4 is not desired to be attached. Thus, the protective metal layer 4 is formed on a predetermined portion when sputtering or vapor deposition is performed.

  Then, by forming the protective metal layer 4 in this way, the first metallized layer 1b and the second metallized layer 1c can be completely covered, and these first metallized layers 1b by the electrolyte B-4 can be covered. Corrosion of the metallized layer 1b and the second metallized layer 1c can be prevented.

  Preferably, in the ceramic substrate 1, a step portion 1d for fixing the battery element or the electric double layer capacitor element is provided in the vicinity of the outer peripheral portion of the bottom surface of the recess 1a. Specifically, as shown in FIG. 5 (a), a configuration in which the entire outer peripheral side is a stepped portion 1d with respect to the portion where the battery element or electric double layer capacitor element on the bottom surface of the recess 1a is mounted, As shown in (b), a projecting stepped portion 1d is formed over the entire circumference on the outer peripheral side of the portion where the battery element or electric double layer capacitor element on the bottom surface of the recess 1a is mounted. With this configuration, the battery element or the electric double layer capacitor element can be easily and accurately mounted on the predetermined position of the concave portion 1a of the ceramic base 1, and the battery or electric double layer capacitor using the ceramic base 1 can be mounted on the electric circuit board. However, even if the battery element or the electric double layer capacitor element is mounted sideways, it is possible to prevent the battery element or the electric double layer capacitor element from being locked and displaced by the step portion 1d. As a result, it functions extremely well without degrading the function as a battery or an electric double layer capacitor.

  As a method for forming such a stepped portion 1d, it may be formed by laminating green sheets. When a green sheet laminate to be the ceramic substrate 1 is produced, the stepped portion 1d is formed on the bottom surface of the recess 1a. Just keep it.

  Of course, in the configuration in which the stepped portion 1d is provided, the first metallized layer 1b may be provided with the insulating paste layer 3 and the protective metal layer 4, and the metallized layer is prevented from being corroded by the electrolytic solution B-4. it can.

  The first metallized layer 1b in a form (see FIG. 5 (a)) in which the entire outer peripheral side is a stepped portion 1d with respect to the portion where the battery element or electric double layer capacitor element on the bottom surface of the recess 1a is mounted. As shown in FIG. 5 (a), it is preferable to provide the cover so as to be covered with the stepped portion 1d so as to be exposed to the recess 1a only at the connection portion with the battery element or the electric double layer capacitor element. With this configuration, the contact area of the first metallized layer 1b with the electrolytic solution B-4 can be minimized, and the first metallized layer 1b can be effectively prevented from being corroded by the electrolytic solution B-4. . When the insulating paste layer 3 is provided in this form, it is preferable to provide the insulating paste layer 3 on the side surface of the stepped portion 1d. With this configuration, in the portion where the first metallized layer 1b is led into the recess 1a, adhesion failure occurs between the green sheets to be the ceramic substrate 1, and a gap is generated between the green sheets (this state is also referred to as opening). Can be effectively prevented.

  Further, in a form (see FIG. 5 (b)) in which a convex step portion 1d is formed on the entire outer periphery side of the portion where the battery element or electric double layer capacitor element on the bottom surface of the recess 1a is mounted. As shown in FIG. 5 (b), one metallized layer 1b is provided in the concave portion 1a of the ceramic substrate 1 by a necessary minimum length, and is a protective metal layer over the connection portion with the battery element or the electric double layer capacitor element. 4 is preferably provided. With this configuration, the length led out to the recess 1a of the first metallized layer 1b is minimized, and the possibility of corrosion of the first metallized layer 1b due to contact with the electrolytic solution B-4 is reduced. It is possible to effectively prevent opening between the green sheets that become 1. A configuration in which the first metallized layer 1b is provided up to the inner peripheral side of the stepped portion 1d is also conceivable, but in this case, the first metallized layer 1b is configured to be inserted between the green sheets that become the stepped portion 1d. There is a possibility of opening between the green sheets to be the stepped portions 1d. Further, when the insulating paste layer 3 is provided, it is preferably provided on the periphery of the bottom of the recess 1a. With this configuration, it is possible to effectively prevent the opening between the green sheets serving as the ceramic substrate 1 at the portion where the first metallized layer 1b is led into the recess 1a.

  Next, the battery B or the electric double layer capacitor B of the present invention will be described in detail below. FIG. 4 is a cross-sectional view showing an example of an embodiment of a battery B or an electric double layer capacitor B of the present invention, where B-1 is one electrode plate or first polarizable electrode plate, and B-2 is the other electrode plate. Alternatively, the second polarizable electrode plate, B-3 is a separator, B-4 is an electrolytic solution, 5 is a lid, and B is a battery. In addition, the same code | symbol is attached | subjected to the same site | part as FIG. 1 thru | or FIG. In the battery B of the present invention, the battery element mainly composed of the one electrode plate B-1, the other electrode plate B-2, the separator B-3, and the electrolyte B-4 is hermetically sealed in the ceramic container A and the lid body 5. It has been done. In addition, the electric double layer capacitor B of the present invention is mainly composed of the first polarizable electrode plate B-1, the second polarizable electrode plate B-2, the separator B-3, and the electrolyte B-4. The double layer capacitor element is hermetically sealed in the ceramic container A and the lid 5.

  In the battery B of the present invention, one of the one electrode plate B-1 and the other electrode plate B-2 is used as a positive electrode plate and the other is used as a negative electrode plate. In the following, the case where one electrode plate B-1 is a positive electrode plate B-1 and the other electrode plate B-2 is a negative electrode plate B-2 will be described as an example, but one electrode plate B-1 is a negative electrode. It is a plate and the other electrode plate B-2 may be a positive electrode plate. In the electric double layer capacitor B of the present invention, the first polarization positive electrode plate B-1 and the second polarization positive electrode plate B-2 are used for either the positive electrode or the negative electrode depending on the polarity of the electric circuit to be connected. be able to.

  As shown in FIG. 4, the battery B of the present invention has a ceramic container A having the above-described configuration and a positive electrode plate B-1 placed on the bottom surface of the recess 1a and electrically connected to the first metallized layer 1b. The negative electrode plate B-2 placed so as to be in close contact with the upper surface of the positive electrode plate B-1 via the separator B-3 impregnated with the electrolytic solution B-4, and at least the lower main surface is conductive. And contacted with the negative electrode plate B-2 to be electrically connected and electrically connected to the second metallized layer 1c, and joined to the upper surface of the ceramic substrate 1 so as to close the recess 1a. And a lid 5.

  In the battery B of the present invention, preferably, as shown in FIGS. 5A and 5B, a stepped portion for fixing the negative electrode plate B-2 in the vicinity of the outer peripheral portion of the lower main surface of the lid 5 5d is provided.

  As shown in FIG. 4, the electric double layer capacitor B of the present invention has a ceramic container A having the above-described configuration and a first metal plate placed on the bottom surface of the recess 1a and electrically connected to the first metallized layer 1b. Polarizable electrode plate B-1 and second polarizability placed so as to be in close contact with the upper surface of first polarizable electrode plate B-1 via separator B-3 impregnated with electrolyte B-4 The electrode plate B-2 and at least the lower main surface are made conductive, are in contact with and electrically connected to the second polarizable electrode plate B-2, and are electrically connected to the second metallized layer 1c. And a lid 5 joined to the upper surface of the ceramic substrate 1 so as to close the recess 1a.

  In the electric double layer capacitor B of the present invention, preferably, as shown in FIGS. 5A and 5B, the second polarizable electrode plate B is provided near the outer peripheral portion of the lower main surface of the lid 5. -2 A step portion 5d for fixing is provided.

  Thereby, since the battery B or the electric double layer capacitor B of the present invention includes the ceramic container A of the present invention, the airtight reliability is high and impurities hardly elute in the electrolyte B-4. Thus, the battery B or the electric double layer capacitor B can be stably charged and discharged and can be mounted sideways with the side face down, which can cope with further recent space saving of an electric circuit board.

  First, the battery B of the present invention will be described in detail.

The positive electrode plate B-1 is a plate or sheet containing a positive electrode active material made of LiCoO ₂ or LiMn ₂ O ₄ and a conductive material such as acetylene black or graphite, and the negative electrode plate B-2 Is a plate or sheet including a negative electrode active material made of a carbon material such as coke or carbon fiber.

  The positive electrode plate B-1 is obtained by adding a binder such as polytetrafluoroethylene or polyvinylidene fluoride to the positive electrode active material added with the conductive material, and mixing it to form a slurry. This is a well-known doctor blade method. Is formed into a sheet shape, and then the sheet is cut into, for example, a circle or a rectangle.

  Similarly, the negative electrode plate B-2 is made into a slurry by adding and mixing a binder such as polytetrafluoroethylene or polyvinylidene fluoride to the negative electrode active material, which is formed into a sheet using a well-known doctor blade method. Then, this sheet is cut into, for example, a circular shape.

  The separator B-3 is made of a nonwoven fabric made of polyolefin fiber, a microporous membrane made of polyolefin, or the like, impregnated with the electrolytic solution B-4, and is formed between the positive electrode plate B-1 and the negative electrode plate B-2. The positive electrode plate B-1 and the negative electrode plate B-2 are prevented from coming into direct contact with each other, and the electrolyte solution between the positive electrode plate B-1 and the negative electrode plate B-2. The movement of B-4 is enabled to allow a current to flow.

The lid 5 is made of an Al ₂ O ₃ sintered body, an AlN sintered body, a ceramic such as glass ceramics, or a metal such as an Fe—Ni—Co alloy, an Fe—Ni alloy, or Al. When the lid 5 is made of ceramics, at least the lower main surface needs to be conductive. Examples of the conductive material formed on the lower main surface of the lid 5 include a metallized layer made of W, Mo, Mn, or the like, or a metal thin film layer made of Al or the like applied by sputtering or vapor deposition. For example, in the case of an Al ₂ O ₃ sintered material, a metallized layer made of a refractory metal such as W, Mo, or Mn is formed on the lower surface of the lid 5. In this case, preferably, the same metallized layer as that of the first metallized layer 1b, the second metallized layer 1c, the first electrode 2a, and the second electrode 2a is formed in advance, and can be manufactured efficiently. Become. Further, in this case, preferably, a Ni layer or an Au layer is deposited as in the first metallized layer 1b and the second metallized layer 1c, or a protective metal layer 4 such as Al is formed by a well-known sputtering method or vapor deposition. It may be formed by a method or the like. Thereby, corrosion of the metallized layer formed on the lower surface of the lid 5 can be effectively prevented.

  Even when the lid 5 is made of an Fe—Ni—Co alloy, an Fe—Ni alloy, or the like, a protective metal layer made of an Au layer or an Al layer is formed at least on the lower main surface.

  Further, the second metallized layer 1c formed around the concave portion 1a on the upper surface of the ceramic substrate 1 and the conductive material on the lower surface of the lid 5 are made of Al solder, silver (Ag) solder, Au-tin (Sn) solder. The recess 1a of the ceramic substrate 1 is kept airtight by covering the recess 1a on the upper surface of the ceramic substrate 1 with a brazing material or the like, or by adhering with a resin adhesive or the like.

  Preferably, a step portion 5d for fixing the negative electrode plate B-2 is provided in the vicinity of the outer peripheral portion of the lower main surface of the lid 5. With this configuration, even when the battery B is mounted in a state of being sideways with respect to the electric circuit board, it is possible to prevent the negative electrode plate B-2 from being locked and displaced by the step portion 5d. As a result, the battery B functions very well without deteriorating its function.

  Specifically, as shown in FIG. 5A, the entire outer peripheral side of the outer peripheral portion of the lower main surface of the lid 5 on which the battery element or the electric double layer capacitor element is mounted is the stepped portion 5d. 5d, or a stepped portion 5d that is convex over the entire circumference from the portion where the battery element or electric double layer capacitor element on the lower main surface of the lid 5 is mounted as shown in FIG. Is formed.

As a method of forming such a stepped portion 5d, when the lid 5 is made of ceramics such as an Al ₂ O ₃ sintered body, an AlN sintered body, or a glass ceramic, it may be formed by stacking green sheets, When producing a laminate of green sheets to be the lid 5, a step portion 5 d may be formed on the lower surface of the lid 5. When the lid 5 is made of a metal such as Fe-Ni-Co alloy, Fe-Ni alloy, or Al, a step is formed on the lower surface of the lid 5 when the lid 5 is manufactured by a metal working method such as a press molding method or an etching method. The part 5d may be formed.

  In the case of a form in which a convex stepped portion 5d is formed on the entire outer periphery side of the part on which the battery element or electric double layer capacitor element on the lower main surface of the lid 5 is mounted, FIG. As shown, it is preferable that the outer periphery of the convex step portion 5d is fitted to the inner periphery of the recess 1a. With this configuration, the lid 5 can be joined to the ceramic base 1 so that the outer periphery of the stepped portion 5d is fitted to the inner circumference of the recess 1a, and the lid 5 is joined to a predetermined position of the ceramic base 1. Is possible. Also, with this configuration, the stepped portion 5d can prevent the second metallized layer 1c from directly touching the electrolytic solution B-4, and the second metallized layer 1c is prevented from being corroded by the electrolytic solution B-4. can do.

  In this configuration, if a step 1d for fixing the battery element is also provided in the vicinity of the outer peripheral portion of the bottom surface of the concave portion 1a of the ceramic base 1, the battery B is in a state of being sideways with respect to the electric circuit board. Even if the positive electrode plate B-1 is mounted, it is possible to reliably prevent the positive electrode plate B-1 from being locked and displaced by the step portion 1d. As a result, the battery B functions very well without deteriorating its function.

  As the electrolytic solution B-4, for example, a lithium salt such as lithium tetrafluoroborate or an acid such as hydrochloric acid, sulfuric acid or nitric acid dissolved in an organic solvent such as dimethoxyethane or propylene carbonate is used.

  Such an electrolytic solution B-4 is highly corrosive or soluble, but according to the battery B of the present invention, the ceramic substrate 1 is attacked by the electrolytic solution B-4 containing an organic solvent, an acid, or the like. It is difficult, and the battery performance can be maintained satisfactorily without the impurities dissolved from the ceramic container A being mixed into the electrolytic solution B-4 to deteriorate the electrolytic solution B-4.

  The battery B is placed on the upper surface of the first metallized layer 1b so that the positive electrode plate B-1, the separator B-3, the negative electrode plate B-2, and the lid 5 are in close contact with each other, and the electrolytic solution After injecting B-4, bonding is performed so as to cover the recess 1a on the upper surface of the substrate 1 by a method such as brazing using Al brazing, Ag brazing, Au—Sn solder, or bonding using a resin adhesive or the like. Battery B is obtained.

  Next, the electric double layer capacitor B of the present invention will be described in detail.

The first polarizable electrode plate B-1 and the second polarizable electrode plate B-2 are obtained, for example, by carbonizing and activating phenol resin fibers (novoloid fibers). This is done by bringing it into contact with an activation gas such as high-temperature steam in a high-temperature atmosphere at ℃, and gasifies volatile components in carbides or part of carbon atoms, mainly developing a fine structure of 1 to 10 nm to increase the internal surface area. It is produced in a process up to 1 × 10 ⁶ m ² / kg or more. The electric double layer capacitor B of the present invention has no polarity in the first and second conductor layers 1d, 1e, and can be used as an anode on the first conductor layer 1d side and a cathode on the second conductor layer 1e side, The reverse polarity can also be used.

  In the electric double layer capacitor B, preferably, a step portion 5d for fixing the second polarizable electrode plate B-2 is provided in the vicinity of the outer peripheral portion of the lower main surface of the lid 5. This configuration prevents the second polarizable electrode plate B-2 from being locked and displaced by the step portion 5d even when the electric double layer capacitor B is mounted in a state of being sideways with respect to the electric circuit board. be able to. As a result, the function as the electric double layer capacitor B does not deteriorate and functions extremely well. In this configuration, if the step portion 1d for fixing the electric double layer capacitor element is also provided in the vicinity of the outer peripheral portion of the bottom surface of the recess 1a of the ceramic substrate 1, the electric double layer capacitor B is connected to the electric circuit board. Even when mounted in a horizontally oriented state, it is possible to reliably prevent the first polarizable electrode plate B-1 from being locked and displaced by the step portion 1d. As a result, the function as the electric double layer capacitor B does not deteriorate and functions extremely well.

The electrolytic solution B-4 is, for example, a lithium salt such as lithium hexafluorophosphate (LiPF ₆ ) or a quaternary ammonium salt such as tetraethylammonium tetrafluoroborate ((C ₂ H ₅ ) ₄ NBF ₄ ) using propylene carbonate. It is dissolved in a solvent such as (PC) or sulfolane (SLF).

  Further, for the separator B-3, for example, glass fiber, polyphenylene sulfide, polyethylene terephthalate, resin fiber having heat resistance such as polyamide, or the like is used.

  The electric double layer capacitor B has a first polarizable electrode plate B-1, a separator B-3, a second polarizable electrode plate B-2, and a lid 5 on the upper surface of the first metallized layer 1b. After being placed in close contact with each other and injecting electrolytic solution B-4, the substrate 1 is bonded by a method such as brazing using Al brazing, Ag brazing, Au-Sn solder or the like or bonding using a resin adhesive or the like. The electric double layer capacitor B is joined to the upper surface of the capacitor so as to cover the recess 1a.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention. For example, the battery B or the electric double layer capacitor B using the ceramic container A having one concave portion 1a has been described. However, the ceramic container A having a plurality of concave portions 1a may be used, and in that case, the lid 5 is formed by the concave portions 1a. Or a plurality of lids 5 covering the respective recesses 1a may be attached. When the ceramic container A having a plurality of recesses 1a is used in this way, the battery B or the electric double layer capacitor B produced in each recess 1a is connected in parallel to thereby provide a high capacity battery B or an electric double layer capacitor. B, and a battery B that can supply a high voltage by being connected in series.

(A) is sectional drawing which shows an example of embodiment of the ceramic container of this invention, (b) is a top view of the ceramic container shown to (a), (c) is an outer side surface of the ceramic container shown to (a) It is a perspective view. (A) is sectional drawing which shows the other example of embodiment of the ceramic container of this invention, (b) is a top view of the ceramic container shown to (a), (c) is the outer side of the ceramic container shown to (a) The perspective view of a side is a perspective view at the time of forming the 1st electrode and the 2nd electrode with a castellation conductor in (c) in (c). (A) is sectional drawing which shows the further another example of embodiment of the ceramic container of this invention, (b) is a top view of the ceramic container shown to (a), (c) is a ceramic container shown to (a). It is a perspective view of an outer side surface. It is sectional drawing which shows an example of embodiment of the battery or electric double layer capacitor of this invention. (A) is sectional drawing which shows the other example of embodiment of the battery or electric double layer capacitor of this invention, (b) shows the further another example of embodiment of the battery or electric double layer capacitor of this invention. It is sectional drawing. It is sectional drawing which shows an example of the conventional battery or an electrical double layer capacitor.

Explanation of symbols

1: Ceramic substrate 1a: Recess 1b: First metallized layer 1c: Second metallized layer 2a: First electrode 2b: Second electrode 5: Lid 5d: Stepped part A: Ceramic container B: Battery or electricity Double layer capacitor B-1: One electrode plate (positive electrode plate) or first polarizable electrode plate B-2: Other electrode plate (negative electrode plate) or second polarizable electrode plate B-3: Separator B- 4: Electrolyte

Claims (4)

From a ceramic base having a recess on the upper surface in which a battery element or an electric double layer capacitor element is accommodated, a first metallized layer formed from the bottom of the recess to the side of the ceramic base, and an opening of the recess A second metallized layer formed on the upper surface of the ceramic substrate located on the outside, and a first electrode electrically connected to the first metallized layer and formed on a plurality of outer side surfaces of the ceramic substrate And a second electrode electrically formed independently of the first electrode and electrically connected to the second metallization layer on the outer side surfaces on which the first electrode is formed; A ceramic container comprising: The ceramic container according to claim 1, wherein the first electrode and the second electrode are disposed on all outer side surfaces of the ceramic substrate. The ceramic container according to claim 1 or claim 2, one electrode plate placed on the bottom surface of the recess and electrically connected to the first metallized layer, and an electrolyte solution on the upper surface of the one electrode plate The other electrode plate placed so as to be in close contact with the impregnated separator, and at least the lower main surface are made conductive, are in contact with and electrically connected to the other electrode plate, and the second electrode plate A battery comprising: a lid electrically connected to the metallized layer and bonded to the upper surface of the ceramic base so as to close the concave portion. The ceramic container according to claim 1, a first polarizable electrode plate placed on a bottom surface of the recess and electrically connected to the first metallized layer, and the first polarizability A second polarizable electrode plate placed so as to be in close contact with the upper surface of the electrode plate via a separator impregnated with an electrolyte; and the second polarizable electrode plate, wherein at least the lower main surface is made conductive. And a lid that is connected to and electrically connected to the second metallization layer and is bonded to the upper surface of the ceramic base so as to close the recess. Electric double layer capacitor.

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