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Coil unit, wireless power supply device, wireless power receiving device, and wireless power transmission device

A coil unit and wireless power supply technology, applied in circuit devices, electric vehicle charging technology, circuits, etc., can solve the problems of easy application of external stress and achieve the effect of ensuring load resistance

Active Publication Date: 2019-09-27
TDK CORPARATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, since the power supply coil unit is installed on the road surface of the parking space, there is a problem that external stress is easily applied to the built-in components when the vehicle is driven on the power supply coil unit, so efforts are being made to improve the load resistance of the power supply coil unit Research

Method used

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  • Coil unit, wireless power supply device, wireless power receiving device, and wireless power transmission device
  • Coil unit, wireless power supply device, wireless power receiving device, and wireless power transmission device
  • Coil unit, wireless power supply device, wireless power receiving device, and wireless power transmission device

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no. 1 approach

[0051] First, refer to figure 1 , the wireless power transmission device S1 according to the first embodiment of the present invention will be described. figure 1 It is a schematic diagram showing the wireless power transmission device and the battery according to the first embodiment of the present invention together.

[0052] Such as figure 1 As shown, the wireless power transmission device S1 includes a wireless power supply device 100 and a wireless power receiving device 200 . In this embodiment, an example in which the wireless power transmission device S1 is applied to a device that supplies power to a vehicle will be described. That is, the wireless power feeding device 100 is a power feeding device installed on the ground, and the wireless power receiving device 200 is a power receiving device mounted on a vehicle. Examples of the vehicle using the wireless power receiving device 200 include various vehicles such as an electric car or a hybrid car that use electric...

no. 2 approach

[0075] Next, refer to Figure 6 , the wireless power transmission device according to the second embodiment of the present invention will be described. Figure 6 is equivalent to Figure 5 The schematic perspective view showing the sensor and the space for the sensor of the power supply coil unit according to the first embodiment of the present invention enlarged from the vertical top is shown enlarged from the vertical top and shows the power supply coil unit according to the second embodiment of the present invention Schematic perspective view of the sensor and sensor space. The wireless power transmission device according to the second embodiment is different from the first embodiment in the shape and arrangement of the sensor 810 in the sensor space 800 of the feeding coil unit L1, and the other configurations are the same as those of the wireless power transmission device according to the first embodiment. The power transmission device S1 is the same. Hereinafter, desc...

no. 3 approach

[0079] Next, refer to Figure 7 , the wireless power transmission device according to the third embodiment of the present invention will be described. Figure 7 is equivalent to Figure 5 The shown enlarged schematic perspective view showing the sensor and the space for the sensor of the feeding coil unit according to the first embodiment of the present invention from vertically above shows the feeding coil unit according to the third embodiment of the present invention enlargedly from above Schematic perspective view of the sensor and sensor space. The wireless power transmission device according to the third embodiment is different from the first embodiment in that a feeding coil unit L1 has a plurality of sensors 810, and the other configurations are the same as those of the wireless power transmission device S1 according to the first embodiment. . Hereinafter, description will focus on points different from the first embodiment.

[0080] Such as Figure 7 As shown, in...

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Abstract

The invention relates to a coil unit which guarantees load resistance and can restrain stress transmission to a sensor arranged therein when external stress is applied. The coil unit is provided at the ground side and comprises a coil, at least one sensor which detects an object which exists in the upper part or the circumference of the coil unit, and a housing which stores the aforementioned coil and the aforementioned sensor. The aforementioned housing has a partition plate dividing the housing into space for the coil and space for the sensors which is vertically over the space for the coil, and at least one support holding internal space of the aforementioned space for the sensors, wherein the sensors are arranged on the partition plate and the inner surface of the upper portion of the housing in the space for the sensors in a non-contact manner.

Description

technical field [0001] The invention relates to a coil unit, a wireless power supply device, a wireless power receiving device and a wireless power transmission device. Background technique [0002] It has been proposed to charge a battery mounted on a vehicle when the vehicle is parked in the parking space by supplying electric power from a power supply coil unit installed in a parking space that can be parked to a power receiving coil unit installed on the vehicle side via a magnetic field. Wireless power supply system. [0003] In this wireless power supply system, the development of a sensor-mounted power transmitting coil unit has been studied in order to detect that metal foreign matter that may be affected by a magnetic field is mixed between the power transmitting coil unit and the power receiving coil unit. [0004] However, since the power supply coil unit is installed on the road surface of the parking space, there is a problem that external stress is easily appl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/02H01F27/40H01F38/14H02J50/10B60L53/126B60L53/12
CPCB60L53/12H01F27/022H01F27/402H01F38/14Y02T10/70Y02T10/7072Y02T90/14
Inventor 村重拓也大西正秀菅泽昌之小林正幸
Owner TDK CORPARATION