# US 2017/0256358 A1 · Film capacitor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0256358 A1 - Document ID: US20170256358A1 - Status: Published application - Kind: A1 - Application number: 15/603,171 - Filed: 2017-05-23 - Published: 2017-09-07 - Earliest claimed: 2014-11-28 - Assignees: BYD Company Limited - Applicants: BYD Company Limited - Inventors: WEI YANG; SIYUAN LIU; LUSHENG WU - Web page: https://patentgrep.com/patent/US20170256358A1 ## CPC - H01G 4/236: leading through the housing, i.e. lead-through - H01G 2/04: specially adapted for mounting on a chassis - H01G 2/06: specially adapted for mounting on a printed-circuit support - H01G 4/224: Housing; Encapsulation - H01G 4/228: Terminals - 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 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 - 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) ## Abstract The present disclosure provides a film capacitor, including: a plurality of capacitor cores, including: a first group of capacitor cores connected in parallel, having first and second end surfaces; and a second group of capacitor cores connected in parallel, connected with the first group of capacitor cores in series, having a third end surface opposite to the first end surface of the first group of capacitor cores and a fourth end surface; a positive electrode busbar, connected to the first end surface; a negative electrode busbar, connected to the third end surface; an intermediate busbar, connected to the second end surface and the fourth end surface respectively; a first connection sheet connected to the positive electrode busbar; a second connection sheet connected to the negative electrode busbar; and a third connection sheet connected to the intermediate busbar. ## Claims ### Claim 1 A film capacitor, comprising: a plurality of capacitor cores, comprising: a first group of capacitor cores connected in parallel, having a first end surface and a second end surface; and a second group of capacitor cores connected in parallel, connected with the first group of capacitor cores in series, having a third end surface opposite to the first end surface of the first group of capacitor cores and a fourth end surface; a positive electrode busbar, connected to the first end surface of the first group of capacitor cores; a negative electrode busbar, connected to the third end surface of the second group of capacitor cores; an intermediate busbar, connected to the second end surface of the first group of capacitor cores and the fourth end surface of the second group of capacitor cores respectively; a first connection sheet connected to the positive electrode busbar; a second connection sheet connected to the negative electrode busbar; and a third connection sheet connected to the intermediate busbar. ### Claim 2 (depends on 1) The film capacitor according to claim 1, further comprising: a first electrode terminal connected to the positive electrode busbar; a second electrode terminal connected to the negative electrode busbar; and a third electrode terminal connected to the intermediate busbar. ### Claim 3 (depends on 2) The film capacitor according to claim 2, wherein the intermediate busbar is provided with a plurality of relief holes configured to expose the first electrode terminal and the second electrode terminal therefrom. ### Claim 4 (depends on 1) The film capacitor according to claim 1, further comprising a casing, wherein the plurality of capacitor cores, the positive electrode busbar, the negative electrode busbar, the intermediate busbar, the first connection sheet, the second connection sheet and the third connection sheet are disposed within the casing and sealed by potting insulators. ### Claim 5 (depends on 1) The film capacitor according to claim 1, further comprising an insulation sheet located between the positive electrode busbar and the negative electrode busbar. ### Claim 6 (depends on 1) The film capacitor according to claim 1, wherein the intermediate busbar is of a substantially inverted U shape and comprises: two free ends, each of the two free ends provided with and integrally formed with the third connection sheet; and a top portion, covering above an upper surface of the plurality of capacitor cores. ### Claim 7 (depends on 1) The film capacitor according to claim 1, wherein each group of capacitor cores is arranged in a plurality of rows and in no less than one layer. ### Claim 8 (depends on 7) The film capacitor according to claim 7, wherein each group of capacitor cores is arranged in the plurality of rows and in two layers. ### Claim 9 (depends on 1) The film capacitor according to claim 1, wherein the first connection sheet is provided with a first connection terminal at a peripheral edge thereof; the second connection sheet is provided with a second connection terminal at a peripheral edge thereof; and the third connection sheet is provided with a third connection terminal at a peripheral edge thereof. ### Claim 10 (depends on 9) The film capacitor according to claim 9, wherein the first connection terminal and the first connection sheet are integrally formed; the second connection terminal and the second connection sheet are integrally formed; and the third connection terminal and the third connection sheet are integrally formed. ### Claim 11 (depends on 1) The film capacitor according to claim 1, wherein the first connection sheet and the positive electrode busbar are integrally formed; the second connection sheet and the negative electrode busbar are integrally formed; and the third connection sheet and the intermediate busbar are integrally formed. ### Claim 12 A film capacitor, comprising: a plurality of capacitor cores, comprising: a first group of capacitor cores connected in parallel, having a first end surface and a second end surface; and a second group of capacitor cores connected in parallel, connected with the first group of capacitor cores in series, having a third end surface opposite to the first end surface of the first group of capacitor cores and a fourth end surface; a positive electrode busbar, connected to the first end surface of the first group of capacitor cores; a negative electrode busbar, connected to the third end surface of the second group of capacitor cores; and an intermediate busbar, connected to the second end surface of the first group of capacitor cores and the fourth end surface of the second group of capacitor cores respectively. ### Claim 13 (depends on 12) The film capacitor according to claim 12, further comprising: a first connection sheet and a first electrode terminal connected to the positive electrode busbar; a second connection sheet and a second electrode terminal connected to the negative electrode busbar; and a third connection sheet and a third electrode terminal connected to the intermediate busbar. ### Claim 14 (depends on 13) The film capacitor according to claim 13, wherein the intermediate busbar is provided with a plurality of relief holes configured to expose the first electrode terminal and the second electrode terminal therefrom. ### Claim 15 (depends on 13) The film capacitor according to claim 13, further comprising a casing, wherein the plurality of capacitor cores, the positive electrode busbar, the negative electrode busbar, the intermediate busbar, the first connection sheet, the second connection sheet and the third connection sheet are disposed within the casing and sealed by potting insulators. ### Claim 16 (depends on 12) The film capacitor according to claim 12, further comprising an insulation sheet located between the positive electrode busbar and the negative electrode busbar. ### Claim 17 (depends on 12) The film capacitor according to claim 12, wherein the intermediate busbar is of a substantially inverted U shape and comprises: two free ends, each of the two free ends provided with and integrally formed with the third connection sheet; and a top portion, covering above an upper surface of the plurality of capacitor cores. ### Claim 18 (depends on 12) The film capacitor according to claim 12, wherein each group of capacitor cores is arranged in a plurality of rows and in no less than one layer. ### Claim 19 (depends on 13) The film capacitor according to claim 13, wherein the first connection sheet is provided with a first connection terminal at a peripheral edge thereof; the second connection sheet is provided with a second connection terminal at a peripheral edge thereof; and the third connection sheet is provided with a third connection terminal at a peripheral edge thereof. ### Claim 20 (depends on 19) The film capacitor according to claim 19, wherein the first connection terminal the first connection sheet and the positive electrode busbar are integrally formed; the second connection terminal, the second connection sheet and the negative electrode busbar are integrally formed; and the third connection terminal, the third connection sheet and the intermediate busbar are integrally formed.