TWI345247B - - Google Patents

Description

1345247 IX. Description of the Invention: TECHNICAL FIELD OF THE INVENTION The present invention relates to a capacitor, and more particularly to an electrolytic capacitor construction design suitable for solid state or liquid state and using an external external pin. [Prior Art] At present, electrolytic capacitors are distinguished by solid electrolytic capacitors and liquid electrolytic capacitors. The electrolytic capacitors mainly include a capacitor element, and the outer casing is disposed outside the capacitor element. The capacitor element has a cathode and an anode. And the winding portion of the electrolyte disposed therebetween is sealed in the insulating case and has two pins extending through the bottom surface of the insulating case for external connection. In the construction of the electrolytic capacitors described above, the conventional liquid or solid electrolytic appliances are all made of aluminum and other metal casings, but the metal casings such as aluminum must be sealed with a capacitor of a considerable thickness to seal the capacitors in the casing. There is a problem that the electrolytic capacitor has a large volume, which is not conducive to the thin and light short development trend of 'L'. Therefore, the electrolytic capacitor has been developed with an outer casing made of insulating material, so that the electrolytic capacitor can further reduce the volume. . However, the existing electrolytic capacitors, whether they are packaged in a metal case or an insulating case, must be further bent into an L shape when the external leads can be soldered to the board by surface mount technology. For flat bending and other processing, the pins will cause stress damage to the electric grain or pin during the bending and flattening process, which affects the reliability of the electrolytic capacitor, and the electrolytic capacitor is in the process of manufacture. The process of heating at a high temperature easily causes the solder layer of the surface of the foot Dgn ± _ to be carbonized and destroyed, and the pin which reduces the pin has a narrow pin shape of the electrolytic capacitor, and can provide soldering and area. It is too small, and the pin bent into an L shape is susceptible to an external force, and the electrolytic capacitor is soldered to the circuit board, and the L-shaped pins are only fixed at the ends, and the ends are free. There is a good problem. SUMMARY OF THE INVENTION . The main object of the present invention is to provide an externally-connected electrolyzer, which can be used to overcome the welding surface area of the existing electrolytic capacitors and the tendency of the party to be weak and the like. problem. - For the purpose of achieving the foregoing, the lead external electrolytic capacitor designed by the present invention mainly comprises: 丨, at least - a capacitor element, each capacitor element includes a winding portion and a ^1 inner lead, δ The winding portion is a wound body having an anode foil, a cathode foil and an isolation layer disposed between the cathode 'anode foils, the inner chatter respectively connecting the cathode and anode foils; and an insulating shell having at least one seal formed therein The accommodating space provides the at least one winding portion of the capacitor element, wherein the inner pin of the capacitor element passes through the bottom of the insulating case, and the bottom surface of the inner surface of the insulating case is provided with a first joint portion And a plurality of external pins respectively disposed on the bottom of the insulative housing, the inclusive portion and the extension portion extending laterally from the end portion of the assembly portion, the group portion connecting the capacitor The inner lead corresponding to the element is provided with at least one second joint portion corresponding to the first joint 5 1345247 of the bottom surface of the insulating shell. The invention is characterized by the prior art electrolytic capacitor design, which is characterized in that the inner pin of the insulating shell is only protected by the inner pin.

Shouting outside the bottom edge—small length, and then connecting the inner pin with an external pin fixed on the bottom surface of the insulating case, thereby making the external electrode of the electrolytic capacitor not affected by the high temperature in the process. Solder layer, and; better solderability' and can expand the solderable external pin of the electrolytic capacitor, and make the external pins flat without shifting, so that the electrolytic capacitor can pass the surface adhesion technology It is firmly soldered to the board, and the external leads are fixed through multiple points to make it have good shock resistance. " In addition, the present invention can also utilize the shell base of the combined housing to provide a capacitor element set of ten, so that the capacitor element can be safely provided in the subsequent process or after the package is completed. Protection, to avoid damage to the electric element, to ensure the quality of the capacitor. On the other hand, the outer portions can be placed on the bottom of the insulating casing by using the translation, and the corresponding first and second joint portions are combined with each other to make assembly convenience. [Embodiment] The present invention is designed. The pin external electrolytic capacitor may be a solid electrolytic capacitor or a liquid electrolytic capacitor, as shown in the first to thirteenth preferred embodiments. As can be seen from the figure, the electrolytic capacitor mainly includes at least one. A capacitor element (1 ◦), an insulating case (2 Q ), and a plurality of external pins (3 〇), wherein at least one of the capacitor elements (1 〇) can be one or more at 6 Ι 345247 / In the preferred embodiment shown in the '10th and 12th figures, it is revealed that the electrolytic capacitor has a capacitance element, and the preferred embodiment shown in the sixth, ninth and eleventh drawings discloses that the electrolytic capacitor has a number. a capacitor element, the electric glutamate (i 〇) mainly includes a winding portion (1 1 ) and an inner lead (12) ' as shown in the first and sixth figures, the winding portion (1 1 ) has - anode crucible, a cathode box, and an isolation layer The winding of the body between the anode and the cathode Jie case, the plurality of inner pin (Shang 2), respectively, based

Connecting the anode and the cathode _ 'connect the anode @ or the cathode box to at least the inner lead (12), wherein the preferred embodiment shown in the first and sixth figures reveals the capacitive element (i 〇 Having two inner leads (i 2 ), the tantalum anode, the name and the cathode foil are respectively connected to an inner lead (1 2 ), and in the preferred embodiment shown in the eighth to eleventh figures, the capacitive element is disclosed ( 1 〇) "There are four inner pins (1 2 )", wherein the anode foil and the cathode foil are respectively connected to the two inner pins (12), when the capacitor element (1 〇) has more than two inner pins (1 2 ) The electrolytic capacitor can have the functions of reducing impedance and inductance resistance, etc. The insulating casing (20) can be a casing made of an insulating material, and the winding portion of the at least one capacitor + (丄〇) is provided (丄丄) sealed inside, the inner leads (1 2 ) are worn through the bottom of the insulating case (2 〇), as shown in the second figure, the pin (12) inside the capacitor element (10) is usually Will be made into a longer length, after the at least one capacitor element (丄〇) is sealed in the insulating case (2 〇), it is necessary to assemble the external lead (3 square), the re-piercing the insulating housing some (2 billion) of the inner bottom surface of the pin (12), respectively, cut the excess length portion, retaining only - J length only protruding 71345247

The bottom surface of the insulating case (2 Ο ) is provided with external pins (3 Ο ) for assembly. The insulating case (20) is provided with a first joint on each side of the inner pins (1 2 ) ( twenty two). The external pins (30) are respectively disposed on the bottom surface of the insulating housing (20), and include a plurality of connecting portions (31) and an extending portion (32) disposed at the connecting portion (3 1). a side end 'the end of the set (3 1 ) has at least one set of notches (3丄1)' for assembling the corresponding pin (1 2 ) of the capacitor element (1 0 ) The portion (32) is provided with at least a second joint portion (3 3 )' respectively corresponding to the first joint portion (2 2) of the bottom surface of the insulating casing (20). As shown in the first to fifth embodiments, in the preferred embodiment, the insulative housing (2" can be designed as a combined housing 'which includes a housing base (23) and a housing top i (2 4 'The inside of the shell base (2 3 ) forms at least a accommodating space (〇)' provides a winding portion (1 1 ) of at least one capacitor element (1 襄) in which the top of the accommodating space (2 1 ) is provided Forming an opening, the bottom portion (232) of the at least one receiving space (21) is provided with at least two pin perforations (23 3) extending the bottom surface to provide the capacitance element (1〇) Inside to the base of the case (2 dy pin (12) goes out of the bottom of the case base (23), the bottom of the case base (23) can be improved using the sealing gel (2 7) (such as epoxy pins (1) 2) sealing and fixing the shell base (23, etc.) to fix the inner bottom (2 4 ) to the bottom surface of the top of the shell base C 2 3), the opening of the shell top portion, which will be inside The joint portion 8 1345247 between the winding portion (1 1 ) of the shell cap capacitor element (10) and the shell base (23) can be sealed and fixed together by means of an adhesive. Or use The heat-sealing means, or the use of ultrasonic bonding means, etc., so that the two are tightly bonded together, or other equivalent fixing means to make the two close to the consolidated body; and the insulating casing (2 〇) A plurality of flanges (26) may be further disposed around the bottom surface of the shell base (23). In the above-mentioned capacitor element (1〇), a conductive polymer electrolyte may be provided on the anode crucible and the cathode foil of the winding unit, and directly mounted in the insulating casing (2 〇), The electrolytic capacitor is a solid electrolytic capacitor (as shown in the fourth figure); the winding portion (1 1 ) of the capacitor element (1 裴) is disposed in the insulating housing (20) and can be in the insulating housing C 2 0) The internal accommodating space (2 1 ) is filled with an electrolyte (丄3) (as shown in the fifth figure), so that the electrolytic capacitor is a liquid electrolytic capacitor. The plurality of external pins (30) are respectively made of a conductive metal plate. The extensions (32) of the external pins (30) can be formed into a z-shape in combination with the assembly portion (3 1 ). Or L-shaped...etc. The set contact (311) of the set of contacts (3 1 ) may be V-shaped, arc-shaped, ..., etc., and the corresponding pin (12) corresponding to the capacitor element (10) is provided. In the group connection, as shown in the first and third figures, and the sixth and seventh figures, the end of the group (3丄) forms a set of notches (3 1 1) to provide a single inner pin (1 2) into the group. Pick up. As shown in the eighth and ninth figures, when the anode foil and the cathode foil of the capacitor element (1 Q) are connected to a pair of inner pins (1 2 ), the bottom surface of the insulating case (2 〇) is passed through, and the inner pins are respectively connected. (12) bis inner pins (12) to 9 1345247 are set at the outer pin (3 Ο ) assembly of the insulating case (2 Ο ), and the external pins (3 〇) are connected (3 1) The end can form two sets of notches (311) to provide two inner pins (12) respectively correspondingly placed therein.

The pole foil and the cathode foil are each connected to a pair of inner pins (1 2 ) which pass through the bottom surface of the insulating casing (20), and the inner pins (12) of the inner pair of pins (12) are opposite to the insulating casing (2 〇) External pin (3 Q ) assembly i a front-to-back arrangement 'end of the red pin (3 1 ) at the end of the external pin (3 0 ) forms a joint notch ( 3 1 1 ), and at the junction (3 1 ) forming a set of holes (3 1 2 ) to provide the two inner pins (丄2) to be grouped therein, the aforementioned grouping holes (312 =: corresponding external pins 〇 2 = drop shape Perforation, so that when the external pin (when assembled, the inner pin (12) can be placed into the 1ό 〇), the set hole (3 i 2) pin (1) is valued in the set of notches (, 'other - (d) pin (3.), so that the two inner pins (12: side, the second flat push the outer leg (30) of the set hole small is located at the outer bow 1 η 'make the two inner pins ( 12)" Two or two contact gaps... Sexual connection. This external pin (3 〇) electrically cut the outer bow foot (3 0) can still enter 8 2) away from the joint (( the extension (3) 'The insulating casing (end-up extension - side plate section (3 5 (3 η > the side plate portion (35) provided with the side recess (25) is placed therein.) - 10 1345247 The first joint portion (22) and the second joint portion (33) may be In the preferred embodiment, the first joint portion (22) is a convex column-shaped second joint portion (3 3 ) having a hole-like concave-convex fit. The extension of the outer lead (3 〇) (32) is formed at the side of the second joint portion (3 3) adjacent to the joint portion (3 1 ) to form an outwardly increasing opening. (3 4 ), whereby the external pin can be pushed in and out from the side of the insulating housing (2 〇),

The first ridge-shaped first joint portion (2 2) is laterally urged into the hole-shaped second joint portion (3 3 ) via the expansion port (34), so that the outer turn pins (3 〇) The flat surface is fixed to the bottom surface of the insulating case (2 〇), and the edge of the set (31) of the set of contacts (31) abuts the capacitor: (10) within the pin (丄2), so that The two are electrically connected. : In the description, after the assembly (31) of the external lead (3〇) is connected to the 1 2), the welding means or the conductive adhesive can be used to make the two steps in advance. - the convex column-shaped - rear ° 2) forced into the second-shaped joint of the hole (3 3), the combination of the joints can be utilized, the pressure-bearing ilt + Gan # joint (22;,, into: processing Means, the first 2) is further fixed to the second joint portion (d 3 ) of the extension portion (32), or the shape of the elbow is fixed to the extension 〇 2) The bottom surface makes the external pin (3 〇) firmly insulated: the bottom surface of the body (20), without falling off. ~. And ^ feet (: 22, 13 shows that in the electrolytic capacitor, the external lead 4) "η * 丄 σ Ρ (33) relative to the other end of the expansion port (3 4) can still form eight a concave eight (36), the width of the insertion recess (11 1^45247 6 ) is smaller than the second joint portion (3 3 ), and the first joint portion (22) provided on the bottom surface of the insulating casing (jO) can be formed An elongated chevron is provided. The meta-joining portion (22) enters the second-shaped joint portion (3 3 ) through the expansion port (34) [further further into the insertion (3 6), so that it can be applied by hot pressing means The first joint portion r 22), the 'first joint portion (1)) fixes the second joint portion (3)

Make it outside. The p-bow (3 〇) is firmly fixed to the bottom surface of the insulator. Double C

The invention is characterized by the prior art of electrolysis ag, * area adhesion technology welding "", when it sighs through the surface of the circuit board, the flat portion of the bottom ==== provides a larger welding portion, and The tan junction is relatively thin, and the external lead: the crucible can be stably set on the circuit board and the octagonal energy Μ and the insulating shell are fixed in a plurality of points, so that the external lead is flat and fixed, It is easy to be affected by external force and it is excellent in shock resistance. [Simplified description of the drawing]: One figure is an exploded perspective view of the electrolytic capacitor of the present invention having a preferred embodiment. The first-second diagram is a schematic diagram of the first embodiment of the electrolytic capacitor shown in the first figure. The first diagram of the system of Ji Jijia's example is a schematic view of the three-dimensional appearance after the electrolysis shown in the first figure. The fourth figure is the section of the electrolytic capacitor type electrolytic capacitor. (4) Figure β ° ° I is the best example. The fifth figure is shown in the first figure. The edge shell is filled with € & Electro-grid - preferred embodiment in the extinction Is a schematic cross-sectional view of a sixth FIG patterns based electroless present invention. The second preferred are azelaic y °° good having a plurality of capacitor element 1 son "bottom perspective exploded view of the embodiment. The seventh figure is a bottom view of the bottom view, and the second embodiment of the present invention is combined with the second preferred embodiment. The inventive electrolytic capacitor has a single capacitance element and a schematic view. - 铋 实施 实施 实施 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 θ θ θ θ θ θ θ θ θ θ θ θ θ θ For example, the three-dimensional view of the present invention is a schematic diagram of the electrolytic capacitor of the present invention having a single capacitance element and the s" electric glutinous element having four internal pins. The stomach of the preferred embodiment of the invention has a top view and/or the eleventh figure. The electrolytic capacitor of the present invention has a plurality of capacitor bodies: electricity! The appearance of the looking up vial of the other preferred embodiments of the four internal pins is not intended. Fig. 12 is a bottom perspective exploded perspective view showing another preferred embodiment of the second embodiment of the electrolytic capacitor shown in the first embodiment of the electrolytic capacitor in which the dimple portion of the dice pin is further provided with a recess portion. Thirteenth Diagram is a plan view of the bottom 枧 of the preferred embodiment of the electrolytic capacitor shown in the drawings. — [Main component symbol description] 13 1345247

(1 Ο) Capacitor element (1 2 ) Inner pin (2 0 ) Insulated case (2 2 ) First joint (2 3 1 ) accommodating space (2 3 3 ) Pin perforation (2 5 ) Side recess ( 2 7) Sealing colloid (3 0 ) External pin (3 1 1 ) Assembly notch (3 2 ) Extension (3 3 ) Second joint (3 5 ) Side plate part (11) Winding part (1 3 ) Electrolyte (2 1 ) accommodation space (2 3 ) shell base (2 3 2 ) bottom plate portion (2 4 ) shell top cover (26) flange (31) assembly portion (312) assembly hole (3 4 ) the expansion port (3 6 ) is placed in the pocket

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Claims (1)

1345247 _, the scope of application for patents: 1 · - Pin-type external electrolytic capacitors, mainly including: = one less capacitor element, the capacitor element includes - winding part and at least (four) winding part - with yang, yin (four) and The winding body of the isolation layer of the yin and yang: B, the inner leads are respectively connected to the anode and cathode foil; ^ - the insulating shell has at least one sealed accommodating space therein, and is provided The element is mounted in the winding portion, and the inner leads are passed through the insulating outer portion, and the bottom surface of the insulating housing is provided with a first joint portion on each side of the inner lead; The p-pins are respectively disposed on the bottom of the insulative housing, and include a plurality of connecting portions, and an extending portion extending laterally from one end of the connecting portion, and the connecting portion is connected to the capacitor element. The inner lead pin has at least one second joint portion on the extension portion, and is respectively corresponding to the first joint portion of the bottom surface of the insulating case. [2] The externally-connected electrolytic electric grid device of the first aspect of the invention, wherein the insulating housing comprises a shell base and a shell top cover, wherein the shell base forms an opening space with an opening upward; The shell top cover seal is fixed at the opening of the end of the shell base. 3. In the winding portion of the externally-connected electrolytic cell described in the second paragraph of the patent application, the conductive portion of the capacitor element is provided with a conductive polymer electrolyte. 4 * As shown in the scope of claim 2, the external electrolytic electrolytic solution: H ′ where the insulating space of the insulating case is filled with an electrolyte. 15 1345247 5 · If the scope of the patent application is cried, the externally-connected electrolysis electric power as described in the article will be provided with a number of flanges around the bottom surface of the temple. 6. The externally-connected electrolytic capacitor of the above-mentioned claim, wherein the external _ έΗ i. ,, „ , θ 彳丨 , and the end of the joint form at least And the gap, providing the capacitor element "corresponding to the internal pin placement" 7. As claimed in the patent Fan Gu Di Rong n 6 of the pin external electrolytic grid state, the application group The gap is v-shaped. The external capacitor and the cathode 所述 of the capacitor element are respectively: an inner lead, and a set of connecting holes on the connecting portion of the outer lead, the connecting portion The end forming-stacking gap provides the corresponding pin placement of the capacitor element. -9 For example, the foot-external electrolysis electric power described in the eighth paragraph of the Shenyan patent is surrounded by a notch. The set of holes is a perforation having a large aperture at the proximal end of the notch end and a small aperture at the distal end. ^. The pin of any one of claims 5 to 5, wherein the extension of the external pin extends away from the end of the group interface P to the side plate portion, the insulating case A side recess is formed on the side surface, and a side plate portion of the outer lead is provided therein. The externally-connected electrolytic capacitor of the above-mentioned patent item, wherein the first joint portion of the bottom surface of the insulating casing is formed in a convex column shape, and the second joint portion of the outer portion (10) is formed. A hole corresponding to a joint of the branch. 1 2 · The externally connected electric 13 345247 de-capacitor as described in claim 1 of the patent application, wherein the external pin of the Yanyou is # > the Chu-extension is adjacent to the second joint of the hole The side of the part forms an expansion opening that tapers outwardly. 13. The lead external electrolytic capacitor according to claim 12, wherein the material portion pin forms a recess in the second joint portion of the hole with respect to the other end of the expansion port, the insertion The recess width is smaller than the second joint 5. The first joint portion provided on the bottom surface of the insulating case is formed into an elongated convex shape. The first joint portion can be inserted and fixed in the second joint portion and the recessed hole. 1 4 . The pin external electrolytic capacitor according to any one of the preceding claims, wherein the bottom of the insulating casing is provided with a sealing D-body to seal the inner pins to the bottom surface of the casing base. , schema: as the next page 17