JP-7856531-B2 - Power supply mat

Inventors

• 小林 勝也
• 橋本 俊哉
• 三枝 真二郎
• 山下 修
• 岩田 直樹
• ジョ ソンミン
• 高橋 英介
• 山口 宜久
• 瀧田 晋平

Assignees

• トヨタ自動車株式会社
• 株式会社デンソー

Dates

Publication Date

20260511

Application Date

20220909

Claims (3)

1. A power supply mat in which power transmission coil units for contactless power supply are connected by a connector, The aforementioned power transmission coil unit is Power transmission coil and A power supply member that supplies power to the power transmission coil, Equipped with, The aforementioned connector is It comprises a first energized plate and a second energized plate arranged to face each other with an insulating layer in between, The first energized plate is, One end of the power transmission coil unit has a first connection region that electrically connects the power supply member of one power transmission coil unit and the power supply member of the other power transmission coil unit when the two power transmission coil units are connected, thereby energizing both power supply members. The second energizing plate is, On the other end of the first current-carrying plate, opposite to one end, there is a second connection area to which the power supply member of one of the power transmission coil units and the power supply member of the other power transmission coil unit are electrically connected when the power transmission coil units are connected to each other, thereby energizing both power supply members. The first energized plate and the second energized plate are, The first opposing region on the other end side of the first current-carrying plate, excluding the first connection region, and the second opposing region on one end side of the second current-carrying plate, excluding the second connection region, are facing each other via the insulating layer. When the power transmission coil units are connected by the connector and current is supplied to both power supply members, the direction of the current flowing through the first current-carrying plate and the direction of the current flowing through the second current-carrying plate are opposite. Power supply mat.
2. The aforementioned power supply member is A first metal plate and a second metal plate insulated with an insulating layer, A pair of power supply terminals to which the first energizing plate and the second energizing plate of the connector are connected, Equipped with, The aforementioned power supply member is When an electric current is passed through either the first or second metal plate, the current is supplied to the power transmission coil and flows from the power transmission coil to the other of the first or second metal plate, and one of the pair of power supply terminals has a first terminal that is electrically connected to the first metal plate, and the other terminal has a second terminal that is electrically connected to the second metal plate. The power supply mat according to claim 1.
3. The aforementioned connector is The first connection region has a pair of connection parts for connecting the first energizing plate to the first terminal provided on the power supply member of one of the power transmission coil units and to the first terminal provided on the power supply member of the other power transmission coil unit, The second connection region has a pair of connection parts for connecting the second energizing plate to the second terminal provided on the power supply member of one of the power transmission coil units and to the second terminal provided on the power supply member of the other power transmission coil unit. The power supply mat according to claim 2.

Description

This invention relates to a power supply mat. Patent Document 1 discloses a conventional power supply mat (power transmission device) for contactless power supply, which consists of multiple sheet-like power transmission coil units connected by power supply lines, configured to transmit power to a vehicle without contact. Japanese Patent Publication No. 2014-236540 Figure 1 is a schematic perspective view of a power supply mat according to one embodiment of the present invention.Figure 2 is a schematic exploded perspective view of a power transmission coil unit according to one embodiment of the present invention.Figure 3 is a schematic perspective view of a substrate-type busbar according to one embodiment of the present invention.Figure 4 is a schematic cross-sectional view of a substrate-type busbar along the line IV-IV in Figure 3.Figure 5A is a schematic perspective view showing some components of a substrate-type busbar according to one embodiment of the present invention.Figure 5B is a schematic perspective view showing some components of a substrate-type busbar according to one embodiment of the present invention.Figure 6 shows a power supply mat in which power transmission coil units are connected to each other by connectors.Figure 7 is a schematic perspective view of the connector.Figure 8 is a schematic cross-sectional view of the connector in Figure 7 along the line VIII-VIII.Figure 9 shows how the circuit board-type busbars of two power transmission coil units are connected using a connector.Figure 10 shows that the direction of the current flowing through the first energizing plate and the direction of the current flowing through the second buoyancy plate are opposite. The embodiments will be described in detail below with reference to the drawings. In the following description, similar components will be given the same reference numerals. Figure 1 is a schematic perspective view of a power supply mat 100 according to one embodiment of the present invention. The power supply mat 100 is a mat configured to transmit power supplied from a power source, such as an external AC power source, to a power supply object in a non-contact manner, and comprises at least one sheet-shaped power transmission coil unit 1. The power supply object is not particularly limited in type, as long as it has a power receiving coil unit corresponding to the power transmission coil unit 1; it may be a mobile object such as a vehicle or micropallet, or it may be communication equipment or home appliances. As shown in Figure 1, the power transmission coil units 1 are configured to be connectable to each other, thereby allowing the power supply mat 100 to be freely expanded. The details of the power transmission coil units 1 will be described below with reference to Figures 2 to 6. Figure 2 is a schematic exploded perspective view of the power transmission coil unit 1. For convenience, in the following explanation, the side of the power transmission coil unit 1 where the power supply target is located will be referred to as the front side, and the opposite side as the back side. The power transmission coil unit 1 comprises one or more power transmission coils 2, a substrate-type busbar 3 positioned below the power transmission coils 2, and a cover 4. In this case, a sheet-like ferrite material, for example, can be interposed between the power transmission coils 2 and the substrate-type busbar 3. The power transmission coil 2 forms a resonant circuit with, for example, a capacitor (not shown), and performs contactless power transmission to the power supply target placed on the power transmission coil unit 1 via magnetic field resonant coupling (magnetic resonance). Note that the power transmission method is not limited to magnetic field resonant coupling; other power transmission methods such as magnetic field coupling (electromagnetic induction), electric field coupling, and electric field resonant coupling (electric field resonance) may also be used. Figure 2 shows nine power transmission coils 2. The board-type busbar 3 is electrically connected to both the power supply (not shown) and the power transmission coil 2, and supplies power from the power supply to the power transmission coil 2. Details of the board-type busbar 3 will be described later with reference to Figures 3 to 6. The cover 4 is positioned on the front side of the power transmission coil 2 and the back side of the substrate-type busbar 3, respectively, protecting the power transmission coil 2 and the substrate-type busbar 3. In this embodiment, the cover 4 is made of a flexible material so that the power transmission coil unit 1 can be rolled up or folded. Figure 3 is a schematic perspective view of the substrate-type busbar 3. Figure 4 is a schematic cross-sectional view of the substrate-type busbar 3 along the line IV-IV in Figure 3. Figures 5A and 5B are schematic perspective views showing some components of the substrate-type busbar 3, respectively. A