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JP-7854665-B2 - Capacitor module, method of using the capacitor module, and method of manufacturing the capacitor module

JP7854665B2JP 7854665 B2JP7854665 B2JP 7854665B2JP-7854665-B2

Inventors

  • 川端 基裕
  • 竹岡 宏樹

Assignees

  • パナソニックＩＰマネジメント株式会社

Dates

Publication Date
20260507
Application Date
20220530
Priority Date
20210624

Claims (11)

  1. A capacitor module comprising multiple connected capacitors, Each of the aforementioned multiple capacitors is A capacitor element having a pair of end faces, with electrodes formed on each of the pair of end faces, A busbar connected to the electrode, An outer casing that covers the entire capacitor element and a part of the busbar, The retaining member covered by the exterior body is included, The retaining member has a connecting portion that is exposed from the outer casing, The holding members of two adjacent capacitors are connected to each other by the connecting portion. A capacitor module characterized by the following features.
  2. In the capacitor module according to claim 1, The retaining member holds the bus bar. A capacitor module characterized by the following features.
  3. In the capacitor module according to claim 1 or 2, The plurality of capacitors are arranged such that the electrodes of two adjacent capacitors face each other via the outer casing. A capacitor module characterized by the following features.
  4. In the capacitor module according to claim 1 or 2 , The capacitor element has a circumferential surface sandwiched between the pair of end faces, The retaining member is arranged to face the circumferential surface, A capacitor module characterized by the following features.
  5. In the capacitor module according to claim 1 or 2 , The exterior body has a rectangular parallelepiped shape, The busbar has a connection terminal portion exposed from one side of the exterior body, The aforementioned connection terminal is connected to an external terminal outside the outer casing, In a direction parallel to the one surface of the exterior body, the holding members of the two adjacent capacitors are connected by the connecting portion. A capacitor module characterized by the following features.
  6. In the capacitor module according to claim 1 or 2 , The retaining member is formed from a resin material, The bus bar is insert-molded into the retaining member. A capacitor module characterized by the following features.
  7. In the capacitor module according to claim 1 or 2 , The retaining member has an opening that penetrates the retaining member in a direction in which the retaining member and the capacitor element are aligned. A capacitor module characterized by the following features.
  8. In the capacitor module according to claim 7 , The inner wall surface of the opening has a tapered shape, where the diameter of the opening increases as it moves away from the capacitor element. A capacitor module characterized by the following features.
  9. In the capacitor module according to claim 1 or 2, At least one of the holding members of the plurality of capacitors has a fixing portion that can be fixed to an external device. A capacitor module characterized by the following features.
  10. The capacitor module according to claim 1 or 2 is used such that the two opposing electrodes in the two adjacent capacitors have different polarities. A method for using a capacitor module characterized by the following features.
  11. A step of forming a capacitor element unit comprising electrodes formed on a pair of end faces of a capacitor element, a busbar connected to the electrodes, and a holding member having a connecting portion, A step of creating multiple capacitors by covering the aforementioned capacitor element units with an outer casing, The process includes connecting a plurality of the capacitors by the connecting portion exposed from the outer casing, A method for manufacturing a capacitor module, characterized by the following:

Description

This invention relates to a capacitor module, a method of using a capacitor module, and a method of manufacturing a capacitor module. For example, Patent Document 1 describes a capacitor in which a plurality of capacitor elements, each having electrode portions on both ends, are arranged so that the electrode portions face each other and housed in a case, and the case is filled with resin. In the capacitor of Patent Document 1, a first lead terminal is connected to one electrode portion of each capacitor element, and a second lead terminal is connected to the other electrode portion. Each first lead terminal is connected to a first electrode plate, and each second lead terminal is connected to a second electrode plate. Each electrode plate has an external connection terminal that extends outward from the case. The two opposing electrode sections are connected to the same electrode plate via lead terminals so that their polarity is the same. Japanese Patent Publication No. 2011-54616 Figure 1 is a perspective view of a capacitor module according to an embodiment.Figures 2( a ) and 2( b ) are a perspective view and an exploded perspective view, respectively, of the first capacitor element unit constituting the first capacitor according to the embodiment.Figure 3( a ) is a plan view of a first holding member that holds a pair of busbars according to an embodiment, and Figures 3( b ) and ( c ) are cross-sectional views taken along A-A' and B-B' of Figure 3( a ), respectively.Figures 4( a ) and 4( b ) are a perspective view and an exploded perspective view, respectively, of the second capacitor element unit constituting the second capacitor according to the embodiment.Figure 5 is a front view of a capacitor module according to an embodiment, in which the outer casing is depicted as transparent and the cable ties are omitted.Figure 6 is a diagram illustrating a method for manufacturing a capacitor module according to an embodiment.Figures 7( a ) and 7( b ) illustrate a method for manufacturing a capacitor module according to an embodiment.Figure 8 is a front view of the capacitor module according to the modified example.Figure 9 shows a modified example of a configuration for holding a pair of busbars in the first holding member.Figure 10 is a diagram illustrating the configuration of the first and second connecting parts in the modified example.Figure 11( a ) is a plan view of the fixed part with a connecting part according to the modified example, and Figure 11( b ) is a plan view of the second holding member that holds the busbar according to the modified example. The embodiments of the present invention will be described below with reference to the figures. For convenience, the front, back, left, right, and up and down directions are indicated in each figure as appropriate. Note that the directions shown in the figures indicate the relative direction of the capacitor module, and not the absolute direction. Figure 1 is a perspective view of the capacitor module 1. Figures 2( a ) and ( b ) are a perspective view and an exploded perspective view of the first capacitor element unit C1 constituting the first capacitor 10A, respectively. Figure 3( a ) is a plan view of the first holding member 300A that holds a pair of busbars 200, and Figures 3( b ) and ( c ) are cross-sectional views of Figure 3( a ) along A-A' and B-B', respectively. Figures 4( a ) and ( b ) are a perspective view and an exploded perspective view of the second capacitor element unit C2 constituting the second capacitor 10B, respectively. Referring to Figure 1, the capacitor module 1 comprises multiple components, for example, two first capacitors 10A and two second capacitors 10B. The multiple first capacitors 10A are connected in the left-right direction, and a second capacitor 10B is connected to each of the first capacitors 10A at the left and right ends. The two second capacitors 10B on the left and right are oriented in opposite directions. The number of first capacitors 10A is determined according to the required specifications, such as capacitance. Therefore, depending on the required specifications, the capacitor module 1 may have a configuration that does not include any first capacitors 10A, but only two second capacitors 10B. Referring to Figures 1 to 3( c ), the first capacitor 10A comprises a capacitor element 100, a pair of busbars 200, a first retaining member 300A, and an outer casing 400. The capacitor element 100, the pair of busbars 200, and the first retaining member 300A constitute the first capacitor element unit C1. The capacitor element 100 is formed by stacking two metallized films, each having aluminum deposited on a dielectric film, winding or laminating the stacked metallized films, and pressing them into a flattened shape. The capacitor element 100 is formed in a shape close to a flattened elongated cylinder and has a pair of end faces 101 and a circumferential surface 102 sandwiched between the pair of end faces 101