CAPACITOR MODULE

• US 20110007480A1
• Filed: 02/25/2009
• Published: 01/13/2011
• Est. Priority Date: 03/25/2008
• Status: Abandoned Application

• Current Assignee: Komatsu Ltd.
• Original Assignee: Komatsu Ltd.
• Inventors: Souda, Akihiko
• Application Number:
  US12/735,928
• Publication Number:
  US 20110007480A1
• Time in Patent Office: Days
• US Class Current: 361/728
• CPC Class Codes: B60K 6/28 characterised by the electric energy storing means, e.g. batteries or capacitors
• CPC Class Codes: B60K 6/46 Series type
• CPC Class Codes: B60Y 2200/25 Track vehicles
• CPC Class Codes: B60Y 2200/412 Excavators
• CPC Class Codes: H01G 11/10 Multiple hybrid or EDL capacitors, e.g. arrays or modules housings, cases, encapsulations or mountings thereof H01G11/78
• CPC Class Codes: H01G 11/18 against thermal overloads, e.g. heating, cooling or ventilating
• CPC Class Codes: H01G 11/82 Fixing or assembling a capacitive element in a housing, e.g. mounting electrodes, current collectors or terminals in containers or encapsulations
• CPC Class Codes: H01G 2/04 specially adapted for mounting on a chassis
• CPC Class Codes: H01G 2/08 Cooling arrangements; Heating arrangements; Ventilating arrangements
• CPC Class Codes: H01G 9/0003 Protection against electric or thermal overload; cooling arrangements; means for avoiding the formation of cathode films H01G9/12 takes precedence
• CPC Class Codes: Y02E 60/13 Energy storage using capacitors
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

A capacitor module is provided with a plurality of capacitor cells each having a capacitor and a capacitor case provided with a first closed-bottomed screw hole with an opening on a bottom surface for housing the capacitor, a metallic cell-fixing body having a through-hole in communication with the first screw hole to which the capacitor cells are fixed by inserting a cell screw in the through-hole and the first screw hole, an insulator made of a thermally conductive insulating material and provided between the capacitor cells and the cell-fixing body for insulating the capacitor cells from the cell fixing body, and a metallic heat-dissipating body having a second closed-bottomed screw hole in which a cell-fixing body screw is inserted and having a flow passage for causing a cooling medium to flow on a rear surface side of a surface on which the second screw hole is provided.

Claims

1. A capacitor module comprising:

a plurality of capacitor cells each having a capacitor and a capacitor case provided with a first closed-bottomed screw hole on a bottom surface for housing the capacitor;

a metallic cell-fixing body having a through-hole in communication with the first screw hole to which each of the capacitor cells is fixed by screwing a cell screw for fixing each of the capacitor cells into the first screw hole through the through-hole;

an insulator being made of a thermally conductive insulating material and installed between the capacitor cells and the cell-fixing body for insulating the capacitor cells from the cell-fixing body;

a metallic heat-dissipating body having a second closed-bottomed screw hole in which a cell-fixing body screw for fixing the cell-fixing body is screwed and having a flow passage for causing a cooling medium to flow on a rear surface side of a surface on which the second screw hole is provided; and

a cover for covering the surface of the heat-dissipating body on which the flow passage is provided.

2. The capacitor module according to claim 1, wherein the number of the second screw hole is smaller than the number of the capacitor cells.

3. The capacitor module according to claim 1, wherein

the cell-fixing body is a plurality of metallic plates each having a planar shape, and

the insulator is a plurality of insulating sheets each of which is thinner than the metallic plates and of which number is the same as or larger than the number of the metallic plates.

4. The capacitor module according to claim 3, wherein

each of the insulating sheets has a planar portion interposed between the capacitor cells and the metallic plates, and

a side surface portion arranged between the capacitor cells and the cell-fixing body screw from both ends in a longitudinal direction of the planar portion along side surfaces of the capacitor cells.

5. The capacitor module according to claim 1, wherein

the heat-dissipating body has a planar base portion provided with the second screw hole and the flow passage, and

a side wall portion installed so as to be substantially orthogonal to the base portion from a peripheral edge of a surface of the base portion provided with the second screw hole to enclose the side surfaces of the capacitor cells.

6. The capacitor module according to claim 1, comprising:

a screw insulator installed between the cell screw and the cell-fixing body for insulating the cell screw from the cell-fixing body.