# US 2019/0378658 A1 · Capacitor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0378658 A1 - Document ID: US20190378658A1 - Status: Published application - Kind: A1 - Application number: 16/547,564 - Filed: 2019-08-22 - Published: 2019-12-12 - Earliest claimed: 2017-03-21 - Assignees: Panasonic Intellectual Property Management Co., Ltd. - Applicants: Panasonic Intellectual Property Management Co., Ltd. - Inventors: SHOZO HIRAMOTO; HIROKI TAKEOKA; KAZUMASA YOSHIDA; DAISUKE MITANI - Web page: https://patentgrep.com/patent/US20190378658A1 ## CPC - H01G 4/33: Thin- or thick-film capacitors {(thin- or thick-film circuits; capacitors without a potential-jump or surface barrier specially adapted for integrated circuits, details thereof, multistep manufacturing processes therefor)} - H01G 2/02: Mountings - H01G 2/103: {Sealings, e.g. for lead-in wires; Covers} - H01G 2/106: {Fixing the capacitor in a housing} - H01G 4/012: Form of non-self-supporting electrodes - H01G 4/228: Terminals - H01G 4/32: Wound capacitors - H01G 4/38: Multiple capacitors, i.e. structural combinations of fixed capacitors - H01G 4/40: Structural combinations of fixed capacitors with other electric elements, the structure mainly consisting of a capacitor, e.g. RC combinations - H02M 7/003: {Constructional details, e.g. physical layout, assembly, wiring or busbar connections} - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - H01G: CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B3/00; capacitors having potential barriers H10D1/62, H10K10/10) - H02M: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P) - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A film capacitor includes a capacitor element, a first bus bar, and a second bus bar. The first bus bar includes a first electrode connecting part connected to the first electrode of the capacitor element at one end and a first connection terminal at another end. The second bus bar includes a second electrode connecting part connected to the second electrode of the capacitor element at one end and a second connection terminal at another end. The first bus bar includes a branch part that is branched from a position closer to the first electrode connecting part than the first connection terminal and extends toward the second electrode along a peripheral surface of the capacitor element. The second bus bar includes an overlapping part that overlaps at least a part of the branch part. The overlapping part is along the peripheral surface of the capacitor element. ## Claims ### Claim 1 A capacitor comprising: a capacitor element having a first end surface and a second end surface that faces to each other, and a peripheral surface connecting between the first end surface and the second end surface, the capacitor element including a first electrode disposed on the first end surface and a second electrode disposed on the second end surface; a first bus bar including a first electrode connecting part at one end of the first bus bar and a first connection terminal at another end of the first bus bar, the first electrode connecting part being connected to the first electrode of the capacitor element, the first connection terminal being configured to be connected to an external terminal; and a second bus bar including a second electrode connecting part at one end of the second bus bar and a second connection terminal at another end of the second bus bar, the second electrode connecting part being connected to the second electrode of the capacitor element, the second connection terminal being configured to be connected to an external terminal, wherein: the first bus bar includes a branch part that is branched from a position closer to the first electrode connecting part than the first connection terminal, the branch part extending toward the second electrode along the peripheral surface of the capacitor element, and the second bus bar includes an overlapping part that overlaps at least a part of the branch part, the overlapping part being along the peripheral surface of the capacitor element. ### Claim 2 (depends on 1) The capacitor according to claim 1, wherein: in the first bus bar, the first connection terminal is disposed on a line extending in a direction along a main surface of the first electrode, and the branch part is branched from a position outside the main surface of the first electrode, the position being closer to the first electrode connecting part than the first connection terminal, and in the second bus bar, the overlapping part extends from a position close to the second electrode connecting part toward the first connection terminal along the peripheral surface of the capacitor element to cover the branch part, and the second connection terminal extends from a leading edge of the overlapping part to be arranged adjacent to the first connection terminal. ### Claim 3 (depends on 1) The capacitor according to claim 1, further comprising a partitioning member disposed between the branch part and the overlapping part, the partitioning member having an insulating property, wherein an edge part of the partitioning member extends along the second electrode connecting part to be disposed between a leading edge of the branch part and the second electrode connecting part, the edge part of the partitioning member being close to the second electrode connecting part. ### Claim 4 (depends on 1) The capacitor according to claim 1, wherein: the first bus bar includes a main body including the first electrode connecting part and the first connection terminal, the branch part is formed as a member separated from the main body, the branch part is fixed to the main body by inserting an insertion part provided in the branch part into insertion port provided in the main body, and the insertion part and the insertion port are bonded to each other by using a bonding agent or welding. ### Claim 5 (depends on 1) The capacitor according to claim 1, wherein: the first bus bar includes a first cover that covers a predetermined region except for a region covered with the branch part and the overlapping part in the peripheral surface of the capacitor element, the second bus bar includes a second cover that covers a predetermined region except for a region covered with the branch part and the overlapping part in the peripheral surface of the capacitor element, and the first cover and the second cover overlap each other.