ELECTRIC EQUIPMENT

• US 20180350515A1
• Filed: 05/30/2018
• Published: 12/06/2018
• Est. Priority Date: 05/31/2017
• Status: Active Grant

• Current Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Original Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Inventors: Okamoto, Noriaki, Shimada, Masahiro, Kochi, Naoto, Hashino, Satoshi, Fujita, Satoru
• Granted Patent: US 10,325,716 B2
• Time in Patent Office: Days
• CPC Class Codes: G01R 15/186 using current transformers with a core consisting of two or more parts, e.g. clamp-on type G01R15/142 - G01R15/16 take precedence; tong testers G01R1/22
• CPC Class Codes: G01R 15/202 using Hall-effect devices Hall elements in arrangements for measuring electrical power G01R21/08
• CPC Class Codes: G01R 15/207 Constructional details independent of the type of device used
• CPC Class Codes: G01R 19/15 Indicating the presence of current
• CPC Class Codes: G01R 31/006 on road vehicles, e.g. automobiles or trucks testing of ignition installations peculiar to internal combustion engines F02P17/00
• CPC Class Codes: G01R 31/343 in operation
• CPC Class Codes: G01R 31/40 Testing power supplies testing photovoltaic devices H02S50/10
• CPC Class Codes: H01F 27/2823 Wires H01F27/2866 takes precedence
• CPC Class Codes: H01F 27/29 Terminals; Tapping arrangements for signal inductances
• CPC Class Codes: H01F 27/346 Preventing or reducing leakage fields using magnetic shields H01F27/36; using auxiliary windings H01F27/38
• CPC Class Codes: H01F 27/402 Association of measuring or protective means
• CPC Class Codes: H01F 3/14 Constrictions; Gaps, e.g. air-gaps in magnetic shunt paths H01F3/12
• CPC Class Codes: H01F 37/00 Fixed inductances not covered by group H01F17/00
• CPC Class Codes: H02M 1/0009 Devices or circuits for detecting current in a converter
• CPC Class Codes: H02M 1/0064 Magnetic structures combining different functions, e.g. storage, filtering or transformation
• CPC Class Codes: H02M 7/003 Constructional details, e.g. physical layout, assembly, wiring or busbar connections

Abstract

In electric equipment, a switching substrate is provided along winding axes of winding parts. A part of the switching substrate is overlapped with a reactor, as viewed in a direction perpendicular to a virtual plane including the winding axes. Further, an electric current sensor is shifted from the reactor in a direction of winding axes, and a sensor substrate is provided in parallel to the virtual plane.

Claims

1. Electric equipment comprising:

a reactor including a pair of winding parts, the winding parts including winding axes on a same virtual plane;

a bus bar electrically connecting the winding parts and a switching element;

a switching substrate supporting the switching element; and

an electric current sensor configured to detect electric current flowing the bus bar,

wherein the electric current sensor includes;

a detection element;

an annular core having a gap for providing the detection element; and

a sensor substrate connecting the detection element and a wiring line, and configured to output a signal indicative of an electric current value,

the switching substrate is provided along the winding axes, and a part of the switching substrate is overlapped with the reactor, as viewed in a direction perpendicular to the virtual plane;

the electric current sensor is shifted from the reactor in a direction of the winding axes;

the sensor substrate is provided in parallel to the virtual plane;

the bus bar includes a first plate part and a second plate part;

at least a part of the first plate part is overlapped with the switching substrate as viewed in a direction perpendicular to the virtual plane, and the first plate part extends in parallel to the virtual plane; and

the second plate part extends from the first plate part toward the switching substrate, as viewed in a direction parallel to the virtual plane.

2. The electric equipment according to claim 1, wherein the detection element is provided between the first plate part and the sensor substrate, as viewed in the direction parallel to the virtual surface.

3. The electric equipment according to claim 1, wherein the second plate part is provided between the switching substrate and the sensor substrate, as viewed in the direction parallel to the virtual plane.

4. The electric equipment according to claim 1, wherein the detection element is overlapped with the reactor, as viewed in the direction of the winding axes;

and

a magnetic field detection surface of the detection element is oriented in a direction perpendicular to the direction of the winding axes.

5. The electric equipment according to claim 1, wherein the first plate part is overlapped with the reactor, as viewed in the direction of the winding axes.

6. The electric equipment according to claim 1, wherein the bus bar comprises:

a third plate part electrically connected to the second plate part; and

a fourth plate part electrically connecting the third plate part and the switching substrate, and

wherein the third plate part and the fourth plate part are provided between the switching substrate and the first plate part, as viewed in the direction of the winding axes, and the third plate part and the fourth plate part are provided between the reactor and the second plate part in the direction of the winding axes, as viewed in the direction perpendicular to the virtual plane; and

the third plate part is in parallel to the first plate part and the switching substrate, and the fourth plate part is in parallel to the second plate part.

7. The electric equipment according to claim 1, wherein the reactor comprises:

a first coupling coil including a first winding part and a second winding part; and

a second coupling coil including a third winding part and a fourth winding part,

wherein the winding axis of the first winding part is in alignment with the winding axis of the third winding part; and

the winding axis of the second winding part is in alignment with the winding axis of the fourth winding part,

the electric equipment comprises;

a first bus bar and a second bus bar as a plurality of the bus bars;

a first electric current sensor as the electric current sensor configured to detect electric current flowing the first plate part of the first bus bar; and

a second electric current sensor as the electric current sensor configured to detect electric current flowing the first plate part of the second bus bar, and

wherein the sensor substrate is a common sensor substrate used in common by the first electric current sensor and the second electric current sensor.