JP2022551279A - 無線充電装置およびそれを含む移動手段 - Google Patents
無線充電装置およびそれを含む移動手段 Download PDFInfo
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- JP2022551279A JP2022551279A JP2022520632A JP2022520632A JP2022551279A JP 2022551279 A JP2022551279 A JP 2022551279A JP 2022520632 A JP2022520632 A JP 2022520632A JP 2022520632 A JP2022520632 A JP 2022520632A JP 2022551279 A JP2022551279 A JP 2022551279A
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- magnetic
- wireless charging
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- coil
- magnetic part
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Abstract
Description
一実現例による無線充電装置は、コイル部と、前記コイル部上に配置される第1磁性部とを含み、前記第1磁性部は、前記コイル部が配置される部分に対応する外郭部と、前記外郭部によって囲まれる中心部とを含み、前記外郭部の厚さが前記中心部の厚さよりも大きい。
以下、前記無線充電装置の各構成要素別に具体的に説明する。
前記コイル部は、導電性ワイヤを含み得る。
前記実現例による無線充電装置は、前記第1磁性部上に配置されるシールド部をさらに含み得る。また、前記無線充電装置が前記第1磁性部に加えて第2磁性部および第3磁性部をさらに含む場合、前記シールド部はこれらの上に配置され得る。
前記第1磁性部は、磁性粉末およびバインダー樹脂を含み得る。
具体的に、前記第1磁性部は、バインダー樹脂および前記バインダー樹脂内に分散された磁性粉末を含み得る。
[化1]
Fe1-a-b-cSiaXbYc
前記式において、XはAl、Cr、Ni、Cu、またはこれらの組み合わせであり、YはMn、B、Co、Mo、またはこれらの組み合わせであり、0.01≦a≦0.2、0.01≦b≦0.1、および0≦c≦0.05である。
前記第1磁性部は、電気自動車の無線充電標準周波数近傍で一定範囲の磁性特性を有し得る。
前記第1磁性部は一定の比で伸長され得る。例えば、前記第1磁性部の伸び率は0.5%以上であり得る。前記伸長特性は、高分子を適用しないセラミック系磁性体では得られ難いものであり、大面積の磁性部が衝撃により歪み等が発生しても損傷を減らし得る。具体的に、前記第1磁性部の伸び率は、0.5%以上、1%以上、または2.5%以上であり得る。前記伸び率の上限には特に制限はないが、伸び率向上のために高分子樹脂の含有量が多くなると、磁性部のインダクタンス等の特性が低下し得るので、前記伸び率は10%以内であることが好ましい。
前記実現例によると、前記第1磁性部に立体構造を適用することにより、充電効率および放熱特性を向上させ得る。図1および図2Aを参照すると、前記第1磁性部300は、前記コイル部200が配置される部分に対応する外郭部310と、前記外郭部310によって囲まれる中心部320とを含み、前記外郭部310の厚さが前記中心部320の厚さよりも大きくて良い。すなわち、前記第1磁性部の外郭部は、前記コイル部において導電性ワイヤの密度が高い部分に対応し、前記第1磁性部の中心部は、前記コイル部において導電性ワイヤの密度が低い部分に対応し得る。この際、前記第1磁性部において外郭部と中心部とは互いに一体型で形成され得る。
前記第1磁性部は大面積を有してよく、具体的に200cm2以上、400cm2以上、または600cm2以上の面積を有し得る。また、前記第1磁性部は、10000cm2以下の面積を有し得る。
前記実現例による無線充電装置は、前記第1磁性部に加えて第2磁性部をさらに含み得る。これにより、前記無線充電装置の充電効率が向上されるとともに、放熱特性を改善し得る。具体的に、図3に示すように、前記第1磁性部300の外郭部310上に配置される第2磁性部500をさらに含み得る。
前記第2磁性部は、酸化物系磁性体、金属系磁性体、またはこれらの複合素材を含み得る。
前記第2磁性部の厚さは0.5mm~5mmであり、具体的に0.5mm~3mm、0.5mm~2mm、または1mm~2mmであり得る。前記第1磁性部の外郭部の厚さは、前記第2磁性部の厚さよりもさらに大きくて良い。例えば、前記外郭部の厚さが5mm~11mmであり、前記第2磁性部の厚さが0.5mm~3mmであり得る。
前記第2磁性部は、前記第1磁性部の外郭部、中心部、またはこれらの少なくとも一部上に配置され得る。
前記実現例による無線充電装置は、前記第1磁性部および前記第2磁性部の他に第3磁性部をさらに含み得る。
前記第2磁性部の厚さは0.5mm~5mmであり、具体的に0.5mm~3mm、0.5mm~2mm、または1mm~2mmであり得る。
前記実現例による無線充電装置は、効果的な熱伝達のために放熱部をさらに含み得る。
前記放熱部は、前記第3磁性部と前記シールド部との間に配置される。
前記放熱部は、前記第3磁性部と前記シールド部との間のより効果的な熱の移動のための熱伝導性媒体として機能し得る。具体的に前記第3磁性部は、前記放熱部を介して前記シールド部に熱的に連結され得る。
また、前記第2磁性部が、前記シールド部と前記第1磁性部との間に配置され得る。
図5に示すように、前記無線充電装置10は、前記コイル部200を支持する支持部100をさらに含み得る。前記支持部の材質および構造は、無線充電装置に使用される通常の支持部の材質および構造を採用し得る。前記支持部は、平板構造またはコイル部を固定できるように、コイル部形状に沿って溝が掘られた構造を有し得る。
図5、図6および図7Aに示すように、前記実現例による無線充電装置10は、前述の構成要素を収容するハウジング600をさらに含み得る。
また、前記実現例による前記無線充電装置は、前記シールド部と前記磁性部との間の空間を確保するためのスペーサをさらに含み得る。前記スペーサの材質および構造は、無線充電装置に使用される通常のハウジングの材質および構造を採用し得る。
前記無線充電装置は、送信機と受信機との間の大容量の電力伝送を必要とする電気自動車のような移動手段などに有用に使用され得る。
10:無線充電装置
21:受信機
22:送信機
100:支持部
200:コイル部
300:第1磁性部
310:外郭部
320:中心部
400:シールド部
500:第2磁性部
600:ハウジング
700:第3磁性部
810、820:放熱部
Claims (15)
- コイル部と、
前記コイル部上に配置される第1磁性部とを含み、
前記第1磁性部は、
前記コイル部が配置される部分に対応する外郭部と、
前記外郭部によって囲まれる中心部とを含み、
前記外郭部の厚さが前記中心部の厚さよりも大きい、無線充電装置。 - 前記第1磁性部が、バインダー樹脂と、前記バインダー樹脂内に分散された磁性粉末とを含む、請求項1に記載の無線充電装置。
- 前記第1磁性部が、モールドにより立体構造に成形されたものである、請求項1に記載の無線充電装置。
- 前記無線充電装置が、
前記第1磁性部上に配置されるシールド部をさらに含む、請求項1に記載の無線充電装置。 - 前記第1磁性部の外郭部のうち少なくとも一部が前記シールド部に接触する、請求項4に記載の無線充電装置。
- 前記無線充電装置が、
前記コイル部と前記シールド部との間に配置される第2磁性部をさらに含み、
前記第2磁性部は、前記第1磁性部に対して85kHzにおいて高い透磁率を有する、請求項4に記載の無線充電装置。 - 前記第1磁性部が、85kHzの周波数において5~300の透磁率を有し、
前記第2磁性部が、85kHzの周波数において1000~5000の透磁率を有する、請求項6に記載の無線充電装置。 - 前記第2磁性部が、前記第1磁性部の外郭部上に配置される、請求項6に記載の無線充電装置。
- 前記第2磁性部が、前記シールド部と前記第1磁性部との間に配置される、請求項6に記載の無線充電装置。
- 前記第1磁性部が、前記シールド部に向かう表面に溝を備え、
前記第2磁性部が、前記溝に挿入され配置される、請求項6に記載の無線充電装置。 - 前記無線充電装置が、
前記第1磁性部上に配置され、前記第1磁性部とは異なる透磁率を有する第2磁性部と、
前記第2磁性部上に配置され、前記第2磁性部とは異なる透磁率を有する第3磁性部をさらに含む、請求項1に記載の無線充電装置。 - 前記第1磁性部は、磁性粉末とバインダー樹脂とを含み、
前記第2磁性部は、フェライト系磁性体を含み、
前記第3磁性部は、ナノ結晶質磁性体を含む、請求項11に記載の無線充電装置。 - 前記第3磁性部は、85kHzにおいて前記第1磁性部および前記第2磁性部よりも高い透磁率を有し、
前記第2磁性部は、85kHzで前記第1磁性部よりも高い透磁率を有する、請求項11に記載の無線充電装置。 - 前記第3磁性部は、前記シールド部と熱的に連結される、請求項11に記載の無線充電装置。
- 無線充電装置を含む移動手段であって、
前記無線充電装置が、
コイル部と、
前記コイル部上に配置される第1磁性部とを含み、
前記第1磁性部は、
前記コイル部が配置される部分に対応する外郭部と、
前記外郭部によって囲まれる中心部とを含み、
前記外郭部の厚さが前記中心部の厚さよりも大きい、移動手段。
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EP4053864A1 (en) | 2022-09-07 |
EP4053864A4 (en) | 2023-11-29 |
JP2024041914A (ja) | 2024-03-27 |
WO2021086125A1 (ko) | 2021-05-06 |
JP7454659B2 (ja) | 2024-03-22 |
CN114630763A (zh) | 2022-06-14 |
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