JP2019110301A - 電子部品搭載用放熱基板 - Google Patents
電子部品搭載用放熱基板 Download PDFInfo
- Publication number
- JP2019110301A JP2019110301A JP2018246759A JP2018246759A JP2019110301A JP 2019110301 A JP2019110301 A JP 2019110301A JP 2018246759 A JP2018246759 A JP 2018246759A JP 2018246759 A JP2018246759 A JP 2018246759A JP 2019110301 A JP2019110301 A JP 2019110301A
- Authority
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- Prior art keywords
- lead frame
- substrate
- electronic component
- heat dissipation
- insulating material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Images
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Abstract
Description
したものである。
2程度に小型化することが可能である。
本発明では、このように、後加工により上記リードフレーム110を折り曲げることを可能とする事により、次のような利点を有する。
そして更に上記図19(B)の例では、上記のような冗長回路で回路配線を共用することができる上記部分(α、(β、β´)、(γ、γ´))をそれぞれリードフレーム110(α)、リードフレーム110(β)、リードフレーム110(γ)、を用いて、上下に配置した冗長回路のそれぞれで共有して用いる構成を採用している。
そのため、上記近傍とは、上記シャント抵抗の2つの端子を上記リードフレーム110Hとの接続部に接続部に配置した場合に、上記シャント抵抗の2つの端子の下方に上記リードフレーム110Lの一端が配設されるように構成可能な領域であって、上記シャント抵抗と上記リードフレーム110Lとの直接接続が可能な領域のことを意味している。
2 コラム軸(ステアリングシャフト、ハンドル軸)
3 減速機構
4a 4b ユニバーサルジョイント
5 ピニオンラック機構
6a 6b タイロッド
7a 7b ハブユニット
8L 8R 操向車輪
10 トルクセンサ
11 イグニションキー
12 車速センサ
13 バッテリ
14 舵角センサ
20 電動モータ
30 制御装置(コントロールユニット、ECU)
31 電流指令値演算部
33 電流制限部
35 PI制御部
36 PWM制御部(36Aデューティ演算部、36Bゲート駆動部)
37 インバータ
38 モータ電流検出手段
100(s) 200(s) 300 同一の厚みを有するリードフレーム電子部品搭載用放熱基板
100(d) 200(d) 350 異なる厚みを有するリードフレーム電子部品搭載用放熱基板
100(s、d) 200(s、d) 電子部品搭載用放熱基板(リードフレームの厚みが相互に同じものと異なるものとの双方を含む)
110 110(α) 110(β) 110(γ) リードフレーム
110H リードフレーム(大電流ライン用)
110M リードフレーム(中電流ライン用)
110L リードフレーム(小電流ライン用(信号線用))
t リードフレームの厚さ
113 凹部
113(u) 凹部(表面側)
113(d) 凹部(裏面側)
115 係止部
130 絶縁材
150 縁取り部
500 電子部品搭載用放熱基板(凹部形成例)
800 電子部品搭載用放熱基板(リードフレーム折り曲げ可能例)
900 電子部品搭載用放熱基板(両面実装例)
1000 制御装置
1100 制御装置に設けられるTIM層
1300 制御装置の筐体を構成するアルミダイカスト
5000 従来型の基板
8000 熱伝導体
EC 電子部品
bb バスバー
SR シャント抵抗
CP 接続部
LP 切り欠き部
ECU 制御装置
So 半田
Claims (5)
- 電子部品を実装するための配線パターン形状のリードフレームに形成した導体板と、前記導体板の前記配線パターン形状のリードフレーム間に設けられた絶縁材とにより構成され、前記導体板の電子部品配置面の板面と前記絶縁材の電子部品配置面側の板面とを同一面上に形成し、
前記導体板の前記電子部品配置面の裏面の板面と前記絶縁材の電子部品配置面側の裏面の板面とを同一面上に形成した電子部品搭載用放熱基板であって、
前記配線パターン形状のリードフレームは、少なくとも2種類以上の相互に異なる厚さを有し、
前記配線パターン形状のリードフレームの前記電子部品配置面の裏面の板面と前記絶縁材の電子部品配置面側の裏面の板面とは、前記リードフレームのうち最も厚みを有する前記リードフレームの前記電子部品配置面の裏面の板面に合わせて、同一面上に形成し、
前記電子部品搭載用放熱基板の厚みの薄いリードフレームが設けられた部分の基板面とは異なる側の基板面には、前記厚みの薄いリードフレームの前記基板面の裏面側から前記異なる側の基板面にかけて、複数のピン状の空洞を備え、
前記電子部品搭載用放熱基板を構成する前記厚みの薄いリードフレームの配線幅はそれよりも厚みの厚いリードフレームの配線幅よりも狭く形成され、
前記配線パターン形状のリードフレームと前記絶縁材との間には係止部が設けられ、前記係止部は、前記リードフレームの側面の表面側と裏面側に前記絶縁材との間に段差を形成したものであり、更に、前記リードフレームの板面の側面から内側には、前記リードフレームの表面側と裏面側とを貫通するように形成されると共に前記絶縁材が充填された穴が設けられている電子部品搭載用放熱基板。 - 前記リードフレームの電子部品配置面の板面のうち、前記電子部品を配置しない部分には前記電子部品配置面の板面に表面側凹部を設けて前記絶縁材により被覆し、前記表面側凹部を被覆する前記絶縁材の表面は、前記リードフレームの前記電子部品配置面の板面と前記絶縁材の前記電子部品配置面側の表面とで連続した一つの面を形成する、請求項1に記載の電子部品搭載用放熱基板。
- 前記リードフレームの電子部品配置面の裏面の板面であって、前記電子部品配置面のうち前記電子部品を配置しない部分の裏面に当たる部分に、前記裏面の板面に裏面側凹部を設けて前記絶縁材により被覆し、前記裏面側凹部を被覆する前記絶縁材の表面は、前記リードフレームの電子部品配置面の裏面の板面と前記絶縁材の前記電子部品配置面側の裏面側の表面とで連続した一つの面を形成する、請求項1又は2に記載の電子部品搭載用放熱基板。
- 請求項1乃至3のいずれか1項に記載の、複数のピン状の空洞を備える電子部品搭載用放熱基板を用いた電動パワーステアリング装置。
- 請求項1乃至3のいずれか1項に記載の複数のピン状の空洞を備える電子部品搭載用放熱基板を形成する方法であって、
前記電子部品搭載用放熱基板の両面を電子部品配置面とし、
予め前記厚みの薄いリードフレームを前記電子部品搭載用放熱基板の表面から裏面を透視して見た場合に相互に完全には重ならないように、多少シフトして形成し、
前記リードフレーム間に前記絶縁材を充填するために、上型と下型からなる金型に嵌め込む際には、前記シフトしたことにより前記電子部品搭載用放熱基板の表面から裏面を透視して見た場合に相互に完全に重ならない部分を利用して、裏面側の前記厚みの薄いリードフレームを前記上型の金型から下方に突出して設けた下向きのピンにより保持すると共に、表面側の前記厚みの薄いリードフレームを前記下型の金型から上方に突出して設けた上向きのピンにより保持し、その後に前記リードフレーム間に絶縁材を充填して前記厚みの薄いリードフレームを前記電子部品搭載用放熱基板の両面の電子部品配置面に固定することを特徴とする複数のピン状の空洞を備える電子部品搭載用放熱基板を形成する方法。
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JP6460176B2 (ja) | 2019-01-30 |
CN107004648B (zh) | 2019-04-23 |
JP6501022B2 (ja) | 2019-04-17 |
JP2017224840A (ja) | 2017-12-21 |
JP6521002B2 (ja) | 2019-05-29 |
JP6614322B2 (ja) | 2019-12-04 |
US20170309556A1 (en) | 2017-10-26 |
JP2018152611A (ja) | 2018-09-27 |
JP6658858B2 (ja) | 2020-03-04 |
EP3223308A4 (en) | 2018-08-29 |
JP2018014502A (ja) | 2018-01-25 |
JP6361807B2 (ja) | 2018-07-25 |
WO2016080521A1 (ja) | 2016-05-26 |
EP3223308A1 (en) | 2017-09-27 |
JP6191785B2 (ja) | 2017-09-06 |
US10249558B2 (en) | 2019-04-02 |
JP2018011063A (ja) | 2018-01-18 |
JP2018152612A (ja) | 2018-09-27 |
JP2019083323A (ja) | 2019-05-30 |
JP2018170520A (ja) | 2018-11-01 |
JP6501024B2 (ja) | 2019-04-17 |
JP6501023B2 (ja) | 2019-04-17 |
JPWO2016080521A1 (ja) | 2017-08-17 |
CN107004648A (zh) | 2017-08-01 |
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