WO2024236623A1 - 電子制御装置 - Google Patents

電子制御装置 Download PDF

Info

Publication number
WO2024236623A1
WO2024236623A1 PCT/JP2023/017864 JP2023017864W WO2024236623A1 WO 2024236623 A1 WO2024236623 A1 WO 2024236623A1 JP 2023017864 W JP2023017864 W JP 2023017864W WO 2024236623 A1 WO2024236623 A1 WO 2024236623A1
Authority
WO
WIPO (PCT)
Prior art keywords
base
circuit board
board
connector
cover
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.)
Ceased
Application number
PCT/JP2023/017864
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
純一 嶋根
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Astemo Ltd
Original Assignee
Hitachi Astemo Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Astemo Ltd filed Critical Hitachi Astemo Ltd
Priority to PCT/JP2023/017864 priority Critical patent/WO2024236623A1/ja
Priority to JP2025520210A priority patent/JPWO2024236623A1/ja
Priority to CN202380095284.4A priority patent/CN120814343A/zh
Publication of WO2024236623A1 publication Critical patent/WO2024236623A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details

Definitions

  • the present invention relates to an electronic control device.
  • vehicles such as automobiles are equipped with multiple electronic control devices.
  • the electronic control devices installed in vehicles are constructed with a circuit board on which electronic components are mounted, housed inside a housing.
  • Patent Document 1 describes a configuration for an in-vehicle electronic control device in which the housing is divided into a cover (first body) and a base (second body), a circuit board with a connector mounted thereon is attached to the base, and the circuit board is stored in the space formed by the base and the cover. Patent Document 1 also describes a configuration in which the board surface of the circuit board with a connector mounted thereon is covered with a cover, ensuring a gap between the cover and the connector.
  • the electronic control device described in Patent Document 1 has a structure in which a circuit board and cover are stacked on top of a base. For this reason, the gap between the cover and the connector is affected by the tolerance of the connector as well as the tolerance of the circuit board and the tolerance of the cover. Therefore, with the electronic control device described in Patent Document 1, it was difficult to keep the gap between the cover and the connector to 1.0 mm or less.
  • the object of the present invention is to provide an electronic control device that can minimize the effect of tolerances of connectors, circuit boards, etc. while ensuring the desired dustproof performance.
  • the present application includes a number of means for solving the above problems, and one of them is an electronic control device including a circuit board having a connector mounted on a first board surface, and a metal base and cover for housing the circuit board.
  • the first board surface of the circuit board has a connector mounting area where the connector is mounted, and a circuit function area where circuit function components other than the connector are mounted.
  • the first board surface of the circuit board is covered by the base, and a second board surface opposite to the first board surface of the circuit board is covered by the cover.
  • the base has a number of board fixing pedestals to which the circuit board is fixed, a number of cover fixing pedestals to which the cover is fixed, and a partition wall formed so as to be located at the boundary between the connector mounting area and the circuit function area with respect to the circuit board fixed to the number of board fixing pedestals, and the clearance between the partition wall and the first board surface in the thickness direction of the circuit board is 1.0 mm or less.
  • an electronic control device that can minimize the effects of tolerances of connectors, circuit boards, etc. when ensuring the desired dustproof performance. Problems, configurations and effects other than those described above will become apparent from the following description of the embodiments.
  • FIG. 1 is a perspective view showing an external appearance of an electronic control device according to an embodiment
  • FIG. 2 is a front view of the electronic control device according to the embodiment.
  • FIG. 2 is a bottom view of the electronic control device according to the embodiment.
  • 3 is a cross-sectional view of the electronic control device shown in FIG. 2 taken along line AA.
  • FIG. 2 is a bottom view of a base provided in the electronic control device according to the embodiment. 5 is an enlarged view of a portion B of the electronic control device shown in FIG. 4.
  • FIG. 2 is a bottom view showing a state in which a cover is removed in the electronic control device according to the embodiment.
  • FIG. 1 is a perspective view showing the appearance of an electronic control device according to an embodiment.
  • FIG. 2 is a front view of the electronic control device according to an embodiment.
  • FIG. 3 is a bottom view of the electronic control device according to an embodiment.
  • FIG. 4 is a cross-sectional view of the electronic control device shown in FIG. 2 taken along line A-A.
  • the electronic control unit 10 includes a base 11, a cover 12, and a circuit board 13 (Fig. 4).
  • the electronic control unit 10 is an in-vehicle electronic control unit used, for example, in autonomous driving, advanced driving assistance systems, or a central gateway.
  • the housing of the electronic control device 10 is a member that houses the circuit board 13 to protect the circuit board 13 on which various electronic components are mounted.
  • This housing is composed of a base 11 and a cover 12.
  • the electronic control device 10 is preferably mounted on the vehicle with the base 11 facing upward and the cover 12 facing downward.
  • the base 11 is a metal member. Specifically, the base 11 is a casting obtained by, for example, aluminum die casting, and functions as a heat sink. The base 11 is formed in a rectangular shape when viewed from above. By constructing the base 11 as a casting, the component cost can be kept low.
  • the base 11 is integrally formed with a connector storage section 15, a plurality of heat dissipation fins 16, and a partition section 17.
  • the connector storage section 15 forms a connector storage space 18 between the partition section 17 and the connector storage space 18, and a connector 19 is stored in the connector storage space 18.
  • the circuit board 13 has a first board surface 13a and a second board surface 13b. The first board surface 13a is arranged facing upward, and the second board surface 13b is arranged facing downward.
  • a plurality of connectors 19 (four in the illustrated example) are mounted on the first board surface 13a of the circuit board 13.
  • a gap 20 (FIG. 2) is provided around each connector 19. In this embodiment, the gap 20 around the connector 19 does not need to meet the requirements of IPX4, which is the desired dustproof performance.
  • the connector 19 has a terminal section 19a for electrically connecting to the wiring pattern (not shown) of the circuit board 13.
  • the multiple heat dissipation fins 16 increase the surface area of the base 11 and improve heat dissipation performance.
  • the partition section 17 is formed between the connector storage section 15 and the heat dissipation fins 16.
  • the base 11 is thermally connected to the electronic components 21, 22 ( Figure 4) mounted on the circuit board 13 in the area where the heat dissipation fins 16 are formed by a TIM (Thermal Interface Material) 23.
  • TIM Thermal Interface Material
  • the electronic components 21, 22 are electronic components (heat-generating components) including, for example, a CPU (Central Processing Unit) and a GPU (Graphics Processing Unit) that have a high operating frequency and generate a lot of heat.
  • the electronic components 21, 22 are mounted on the first board surface 13a of the circuit board 13 together with the multiple connectors 19 described above.
  • the cover 12 is a metal member.
  • the cover 12 is a metal sheet obtained by pressing a metal plate (bending, shearing, drilling, etc.). As shown in FIG. 4, the cover 12 forms a board storage space 24 between itself and the base 11, and the circuit board 13 is stored in this board storage space 24.
  • the first board surface 13a of the circuit board 13 is covered by the base 11, and the second board surface 13b of the circuit board 13 is covered by the cover 12.
  • the cover 12 like the base 11, is formed in a rectangular shape in a plan view. Through holes (not shown) are provided at the four corners of the cover 12 for attaching the cover 12 to the base 11. As shown in FIG. 3, the cover 12 is also formed with positioning holes 12a and 12b, a pressing portion 12c, and a reinforcing portion 12d.
  • the positioning holes 12a and 12b are holes for positioning the cover 12 relative to the base 11.
  • the positioning hole 12a is an elongated hole, and the positioning hole 12b is a circular hole.
  • the pressing portion 12c is a portion for compressing an EMI gasket (not shown) between the cover 12 and the circuit board 13.
  • the reinforcing portion 12d is a portion for increasing the rigidity of the cover 12.
  • the end 12e of the cover 12 on the base 11 side is disposed closer to the base 11 side (upper side in Figure 4) than the second board surface 13b in the thickness direction of the circuit board 13. This narrows the clearance between the lower part of the connector 19 and the end 12e of the cover 12, improving dustproofing performance.
  • FIG. 5 is a bottom view of the base included in the electronic control device according to the embodiment.
  • the base 11 is formed with a plurality of (four in the illustrated example) cover fixing base portions 26, a plurality of (four in the illustrated example) board fixing base portions 27, two positioning pins 28a, 28b, a plurality of (four in the illustrated example) connector accommodating recesses 29, and a partition portion 30 serving as a dustproof wall.
  • the cover fixing base 26 is formed at the four corners of the base 11.
  • the cover fixing base 26 is a base for fixing the cover 12 to the base 11.
  • a screw hole 26a is provided in the center of the cover fixing base 26.
  • the multiple board fixing base parts 27 are provided inside the multiple cover fixing base parts 26 described above.
  • the board fixing base part 27 is a base part for fixing the circuit board 13 to the base 11.
  • a screw hole 27a is provided in the center of the board fixing base part 27.
  • the positioning pins 28a and 28b are used to position the cover 12 relative to the base 11.
  • the positioning pins 28a and 28b are provided on the base 11 in correspondence with the positioning holes 12a and 12b provided on the cover 12.
  • the multiple connector accommodating recesses 29 are provided in the base 11 corresponding to the multiple connectors 19 described above.
  • the connector accommodating recesses 29 are portions that form the connector accommodating space 18 ( Figure 4) described above.
  • the bulkhead 30 is integrally formed with the base 11 together with the cover fixing base 26, the board fixing base 27, the positioning pins 28a, 28b, and the connector accommodating recess 29. As shown in FIG. 6, the bulkhead 30 is disposed at a position deeper than the connector 19 and adjacent to the connector accommodating space 18. By disposing the bulkhead 30 in this manner, a large area can be secured for the circuit function region 42, which will be described later.
  • the bulkhead 30 is formed in a convex shape on the lower surface 17a of the partition 17. In other words, the bulkhead 30 is formed in a state where it protrudes toward the circuit board 13 side beyond the lower surface 17a of the partition 17. Furthermore, the protruding end 30a of the bulkhead 30 is disposed at a position recessed from the board fixing base 27 when viewed from the circuit board 13.
  • the clearance G between the partition 30 and the first board surface 13a of the circuit board 13 in the thickness direction of the circuit board 13 is 1.0 mm or less.
  • the boundary between the outer shell and the functional parts defined by the partition 30 is ensured to have dustproof performance equivalent to IP4X.
  • the partition 30 does not contact the first board surface 13a of the circuit board 13. In other words, the above clearance G is greater than zero.
  • the partition 30 is formed parallel to the longitudinal direction of the base 11.
  • the partition 30 is formed elongated between two of the four board fixing bases 27 formed on the base 11 that are located near the connector accommodating recess 29.
  • the first board surface 13a of the circuit board 13 has a connector mounting area 41 where the connector 19 is mounted, and a circuit function area 42 where the electronic components 21, 22 and other electronic components (not shown) are mounted.
  • the electronic components 21, 22 and other electronic components correspond to circuit function components other than the connector.
  • the partition wall 30 is formed so as to be located at the boundary between the connector mounting area 41 and the circuit function area 42 with respect to the circuit board 13 fixed to the multiple board fixing bases 27.
  • the partition wall 30 is formed on the lower surface 17a of the partition 17 located between the connector mounting area 41 and the circuit function area 42.
  • the connector mounting area 41 is located closer to the outer hull than the position K indicated by the dashed line in the figure, and the circuit function area 42 is located closer to the functional part than the position K.
  • the position where the partition wall 30 is formed may be within the width of the partition 17 that faces the first board surface 13a of the circuit board 13.
  • the circuit board 13 is fixed to the base 11 by a plurality of board fixing screws 45 (four in the illustrated example) as shown in FIG. 7, with the first board surface 13a of the circuit board 13 in contact with the plurality of board fixing base portions 27.
  • the board fixing screws 45 engage with the screw holes 27a (FIG. 5) of the board fixing base portions 27 through through holes (not shown) provided in the circuit board 13.
  • the circuit board 13 is then fastened to the board fixing base portions 27 of the base 11 by the fastening force of each board fixing screw 45.
  • the board fixing screws 45 correspond to board fasteners for fastening the circuit board 13 to the base 11.
  • the cover 12 is fixed to the base 11 by a plurality of cover fixing screws 46 (four in the illustrated example) as shown in FIG. 3, with the positioning pins 28a, 28b fitted into the positioning holes 12a, 12b and the top surface of the cover 12 in contact with the plurality of cover fixing bases 26.
  • the cover fixing screws 46 engage with the screw holes 26a (FIG. 5) of the cover fixing base 26 through through holes (not shown) provided in the cover 12.
  • the cover 12 is then fastened to the cover fixing base 26 of the base 11 by the fastening force of each cover fixing screw 46.
  • the cover fixing screws 46 correspond to cover fasteners for fastening the cover 12 to the base 11.
  • the clearance G between the partition wall 30 and the first board surface 13a is hardly affected by the tolerance of the connector 19, the tolerance of the circuit board 13, or even the tolerance of the cover 12. Therefore, when ensuring the desired dustproof performance (IP4X specification), the effect of the tolerance of the connector 19, the circuit board 13, etc. can be kept small.
  • the tolerance of the connector 19 does not affect the clearance G, the degree of freedom in connector selection can be increased, for example, by allowing the connector to be selected with priority given to cost.
  • the partition wall 30 functions as a dustproof wall, the desired dustproof performance can be ensured without using a separate sealant.
  • the partition wall 30 is integrally formed with the base 11, the effect of the tolerance of the base 11 on the clearance G can be kept small.
  • the partition wall portion 30 is formed integrally with the base 11, but this is not limited thereto.
  • the base 11 and the partition wall portion 30 may be formed separately and fixed together by bonding or the like.
  • both the base 11 and the cover 12 are made of metal, but this is not limited thereto, and the base 11 may be made of metal and the cover 12 may be made of resin.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mounting Of Printed Circuit Boards And The Like (AREA)
PCT/JP2023/017864 2023-05-12 2023-05-12 電子制御装置 Ceased WO2024236623A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/JP2023/017864 WO2024236623A1 (ja) 2023-05-12 2023-05-12 電子制御装置
JP2025520210A JPWO2024236623A1 (https=) 2023-05-12 2023-05-12
CN202380095284.4A CN120814343A (zh) 2023-05-12 2023-05-12 电子控制装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2023/017864 WO2024236623A1 (ja) 2023-05-12 2023-05-12 電子制御装置

Publications (1)

Publication Number Publication Date
WO2024236623A1 true WO2024236623A1 (ja) 2024-11-21

Family

ID=93518787

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2023/017864 Ceased WO2024236623A1 (ja) 2023-05-12 2023-05-12 電子制御装置

Country Status (3)

Country Link
JP (1) JPWO2024236623A1 (https=)
CN (1) CN120814343A (https=)
WO (1) WO2024236623A1 (https=)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61144678U (https=) * 1985-02-27 1986-09-06
JP2000286587A (ja) * 1999-03-30 2000-10-13 Matsushita Electric Ind Co Ltd 外部ケーブル接続用コネクタ部の電磁シールド構造
JP2013197404A (ja) * 2012-03-21 2013-09-30 Hitachi Automotive Systems Ltd 電子制御装置
JP2013207173A (ja) * 2012-03-29 2013-10-07 Yazaki Corp 配線板の防湿構造
JP2019106404A (ja) * 2017-12-08 2019-06-27 日立オートモティブシステムズ株式会社 電子制御装置
JP2021150517A (ja) * 2020-03-19 2021-09-27 株式会社ソニー・インタラクティブエンタテインメント 電子機器
JP2021190495A (ja) * 2020-05-27 2021-12-13 日立Astemo株式会社 電子制御装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61144678U (https=) * 1985-02-27 1986-09-06
JP2000286587A (ja) * 1999-03-30 2000-10-13 Matsushita Electric Ind Co Ltd 外部ケーブル接続用コネクタ部の電磁シールド構造
JP2013197404A (ja) * 2012-03-21 2013-09-30 Hitachi Automotive Systems Ltd 電子制御装置
JP2013207173A (ja) * 2012-03-29 2013-10-07 Yazaki Corp 配線板の防湿構造
JP2019106404A (ja) * 2017-12-08 2019-06-27 日立オートモティブシステムズ株式会社 電子制御装置
JP2021150517A (ja) * 2020-03-19 2021-09-27 株式会社ソニー・インタラクティブエンタテインメント 電子機器
JP2021190495A (ja) * 2020-05-27 2021-12-13 日立Astemo株式会社 電子制御装置

Also Published As

Publication number Publication date
CN120814343A (zh) 2025-10-17
JPWO2024236623A1 (https=) 2024-11-21

Similar Documents

Publication Publication Date Title
JP5014016B2 (ja) 半導体装置
CN102196713B (zh) 机动车用电子控制装置
JP7517289B2 (ja) 電子装置
CN108702856B (zh) 电路构成体
US20110292624A1 (en) Electronic control unit
JP3922626B2 (ja) 箱形制御ユニット
JP6634316B2 (ja) 樹脂封止型車載制御装置
EP1806960B1 (en) Electronic device
JPH02272795A (ja) 自動車の電子装置のためのケーシング
KR20110006624A (ko) 전자 제어 장치
JP7081463B2 (ja) 電気接続箱
CN110383612B (zh) 电气连接箱
JP5895091B1 (ja) 光モジュール
JP2019022293A (ja) 電源装置
CN216942922U (zh) 抗振动的车载多媒体主机
WO2024236623A1 (ja) 電子制御装置
JP2012199354A (ja) 電子制御装置
CN116235297B (zh) 基板单元
WO2019012801A1 (ja) 電子装置
JPWO2016113929A1 (ja) モータ及びモータの製造方法
KR20200025215A (ko) 전자제어 장치
JP2014013805A (ja) 制御ユニット
JP7163022B2 (ja) 電子制御装置
JP2021190495A (ja) 電子制御装置
JP4825248B2 (ja) 電子制御装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23937371

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2025520210

Country of ref document: JP

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 2025520210

Country of ref document: JP

WWE Wipo information: entry into national phase

Ref document number: 202380095284.4

Country of ref document: CN

WWP Wipo information: published in national office

Ref document number: 202380095284.4

Country of ref document: CN

NENP Non-entry into the national phase

Ref country code: DE