JP2020018043A

JP2020018043A - On-vehicle power supply device

Info

Publication number: JP2020018043A
Application number: JP2018138079A
Authority: JP
Inventors: 洋一影山; Yoichi Kageyama; 大貴西中; Daiki Nishinaka; 一雄竹中; Kazuo Takenaka; 久雄平城; Hisao Hirashiro; 侑吾薛; Yugo Setsu; 克則愛宕; Katsunori Atago; 貴司東出; Takashi Higashide
Original assignee: Panasonic Intellectual Property Management Co Ltd
Current assignee: Panasonic Intellectual Property Management Co Ltd
Priority date: 2018-07-24
Filing date: 2018-07-24
Publication date: 2020-01-30
Anticipated expiration: 2038-07-24
Also published as: JP7241329B2

Abstract

To proximately dispose a control circuit part and a power conversion circuit part.SOLUTION: An on-vehicle power supply device 6 includes: a mounting substrate 7; a high-potential conductor part 8, an intermediate-potential conductor part 9, and a ground-potential conductor part 10; a high-potential-side electric double-layer capacitor 11 connected to the high-potential conductor part 8 and the intermediate-potential conductor part 9; a ground-potential-side electric double-layer capacitor 12 connected to the intermediate-potential conductor part 9 and the ground-potential conductor part 10; a power conversion circuit part 15; and a control circuit part 16. The high-potential-side electric double-layer capacitor 11 and the ground-potential-side electric double-layer capacitor 12 are disposed separately with respect to the mounting substrate 7 by a space part 19, the control circuit part 16 is mounted and disposed in the space part 19, and the power conversion circuit part 15 is mounted and disposed outside of the space part 19. The high-potential conductor part 8, the high-potential-side electric double-layer capacitor 11, the intermediate-potential conductor part 9, the ground-potential-side electric double-layer capacitor 12, and the ground-potential conductor part 10 are connected in series successively from a high potential side.SELECTED DRAWING: Figure 1

Description

本発明は、各種車両に使用される車載電源装置に関するものである。 The present invention relates to a vehicle-mounted power supply device used for various vehicles.

以下、従来の車載電源装置について図面を用いて説明する。図６は従来の車載電源装置の構成を示した外観側面図であり、車載電源装置１は実装基板２に実装された蓄電部３と電力変換部４と制御部５とを有していた。電力変換部４は、車載電源装置１の外部から供給される電力を蓄電部３へ充電するときの充電動作と、車載電源装置１の外部へ電力を出力するときの放電動作との双方の動作が可能となっていた。そして電力変換部４は、スイッチング動作を行うコンバータ機能によって、上記の充電動作や放電動作に対応していた。また、制御部５は状況に応じて電力変換部４の動作を制御していた。 Hereinafter, a conventional in-vehicle power supply device will be described with reference to the drawings. FIG. 6 is an external side view showing a configuration of a conventional vehicle-mounted power supply device. The vehicle-mounted power supply device 1 has a power storage unit 3, a power conversion unit 4, and a control unit 5 mounted on a mounting board 2. The power conversion unit 4 performs both a charging operation when charging the electric power supplied from outside the vehicle-mounted power supply device 1 to the power storage unit 3 and a discharging operation when outputting power to the outside of the vehicle-mounted power supply device 1. Had become possible. The power conversion unit 4 responds to the above-described charging operation and discharging operation by a converter function of performing a switching operation. Further, the control unit 5 controls the operation of the power conversion unit 4 according to the situation.

ここで、電力変換部４はコンバータ機能のスイッチング動作に伴い多くのノイズや熱を発する。このため、電力変換部４は蓄電部３への熱的影響や制御部５へのノイズの影響を抑制するために、電力変換部４はそれぞれに対して近接配置を回避するように実装基板２上に配置されていた。 Here, the power conversion unit 4 generates a lot of noise and heat with the switching operation of the converter function. For this reason, in order to suppress the thermal effect on the power storage unit 3 and the noise effect on the control unit 5, the power conversion unit 4 mounts the power conversion unit 4 so that the power conversion unit 4 avoids the close proximity to each other. Was placed on top.

なお、この出願の発明に関連する先行技術文献情報としては、例えば特許文献１が知られている。 As prior art document information related to the invention of this application, for example, Patent Document 1 is known.

特開２０００−２４３６５６号公報JP-A-2000-243656

しかしながら、従来の車載電源装置１では、電力変換部４は蓄電部３や制御部５に対して近接配置を回避するように実装基板２上に配置していたため、特に蓄電部３の容量が大きい場合は、電力変換部４による熱やノイズの発生量が大きくなることに伴い、近接配置はさらなる回避が必要となることで、電源装置１の床面積や容積が大きくなることが避けられないという課題を有するものであった。 However, in the conventional in-vehicle power supply device 1, the power conversion unit 4 is disposed on the mounting board 2 so as to avoid the close proximity to the power storage unit 3 and the control unit 5. In this case, with the increase in the amount of heat and noise generated by the power conversion unit 4, it is necessary to further avoid close arrangement, and it is inevitable that the floor area and volume of the power supply device 1 increase. It had problems.

そこで本発明は、電力変換部と蓄電部や制御部との近接配置を可能とすることを目的とする。 Therefore, an object of the present invention is to make it possible to arrange a power conversion unit close to a power storage unit and a control unit.

そして、この目的を達成するために本発明は、実装基板と、前記実装基板に埋設された、高電位導体部と中間電位導体部と接地電位導体部と、前記実装基板の一方面上に、前記高電位導体部と前記中間電位導体部とに接続された高電位側電気二重層コンデンサと、前記中間電位導体部と前記接地電位導体部とに接続された接地電位側電気二重層コンデンサと、前記実装基板の前記一方面もしくは他方面に配置された入力部と出力部と、前記入力部と前記出力部とに接続され、前記実装基板の前記一方面に配置されて前記高電位側電気二重層コンデンサと前記接地電位側電気二重層コンデンサとへの充電および前記高電位側電気二重層コンデンサと前記接地電位側電気二重層コンデンサとへの放電を行う電力変換回路部と、前記実装基板の前記一方面上に配置されて前記電力変換回路部の動作を制御する制御回路部と、を備え、前記高電位側電気二重層コンデンサおよび前記接地電位側電気二重層コンデンサの前記実装基板に対向する底面部はぞれぞれ、前記底面部から引き出さ
れたリード部が、前記高電位導体部と前記中間電位導体部と前記接地電位導体部とに接合されることによって設けられる前記実装基板と前記底面部との間の空間部によって、前記実装基板に対して離間配置され、前記制御回路部は前記空間部に実装配置され、かつ、前記電力変換回路部は前記空間部の外側に実装配置され、前記高電位導体部と前記高電位側電気二重層コンデンサと前記中間電位導体部と前記接地電位側電気二重層コンデンサと前記接地電位導体部とは、高電位側から順に直列に接続された、
ことを特徴としたものである。 In order to achieve this object, the present invention provides a mounting board, embedded in the mounting board, a high potential conductor, an intermediate potential conductor, and a ground potential conductor, and on one surface of the mounting board, A high-potential-side electric double-layer capacitor connected to the high-potential conductor and the intermediate-potential conductor, a ground-potential-side electric double-layer capacitor connected to the intermediate-potential conductor and the ground-potential conductor, An input unit and an output unit disposed on the one surface or the other surface of the mounting substrate, and connected to the input unit and the output unit; A power conversion circuit unit for charging a multilayer capacitor and the ground potential side electric double layer capacitor and discharging to the high potential side electric double layer capacitor and the ground potential side electric double layer capacitor; and And a control circuit section disposed on a side to control the operation of the power conversion circuit section, and a bottom portion of the high potential side electric double layer capacitor and the ground potential side electric double layer capacitor facing the mounting substrate. Each of the mounting board and the bottom portion provided by joining a lead portion pulled out from the bottom portion to the high potential conductor portion, the intermediate potential conductor portion, and the ground potential conductor portion. By the space between the, the mounting circuit board is spaced apart from the mounting board, the control circuit is mounted and disposed in the space, and the power conversion circuit is mounted and disposed outside the space, The high-potential conductor, the high-potential-side electric double-layer capacitor, the intermediate-potential conductor, the ground-potential-side electric double-layer capacitor, and the ground-potential conductor were connected in series from the high-potential side.
It is characterized by the following.

本発明によれば、電力変換回路部から発せられたノイズは、高電位導体部と中間電位導体部と接地電位導体部へと伝搬されたうえで、高電位導体部と中間電位導体部と接地電位導体部とに接続された高電位側電気二重層コンデンサおよび接地電位側電気二重層コンデンサへ吸収される。ここで制御回路部は、高電位側電気二重層コンデンサおよび接地電位側電気二重層コンデンサの下側の空間部に配置されるので高電位導体部と中間電位導体部と接地電位導体部とに近接した位置に配置される。このため、制御回路部の周囲に存在するノイズは高電位導体部と中間電位導体部と接地電位導体部とによって吸収されやすく、この結果として、電力変換回路部から発せられたノイズによる制御回路部への影響は抑制され、電力変換回路部と制御回路部とは近接配置が可能となる。 According to the present invention, the noise generated from the power conversion circuit portion is propagated to the high potential conductor portion, the intermediate potential conductor portion, and the ground potential conductor portion, and then is transmitted to the high potential conductor portion, the intermediate potential conductor portion, and the ground. It is absorbed by the high potential side electric double layer capacitor and the ground potential side electric double layer capacitor connected to the potential conductor portion. Here, the control circuit is disposed in a space below the high-potential side electric double layer capacitor and the ground potential side electric double layer capacitor, so that it is close to the high potential conductor, the intermediate potential conductor, and the ground potential conductor. Placed at Therefore, noise existing around the control circuit is easily absorbed by the high-potential conductor, the intermediate-potential conductor, and the ground potential conductor. As a result, the control circuit due to the noise generated from the power conversion circuit is used. The power conversion circuit unit and the control circuit unit can be arranged close to each other.

また、電力変換回路部から発せられた熱もまた、高電位導体部と中間電位導体部と接地電位導体部とに伝えられたうえで、高電位側電気二重層コンデンサおよび接地電位側電気二重層コンデンサへ伝わることになる。しかしながら、電力変換回路部から発せられた熱は高電位導体部と中間電位導体部と接地電位導体部とに伝えられることにより、高電位側電気二重層コンデンサおよび接地電位側電気二重層コンデンサへ分散される。このため、特定の電気二重層コンデンサへ熱が集中して伝わることを抑制できる。この結果として、電力変換回路部と高電位側電気二重層コンデンサおよび接地電位側電気二重層コンデンサとの近接配置も可能となる。 In addition, heat generated from the power conversion circuit is also transmitted to the high-potential conductor, the intermediate-potential conductor, and the ground-potential conductor, and then transferred to the high-potential-side electric double-layer capacitor and the ground-potential-side electric double-layer. It will be transmitted to the capacitor. However, the heat generated from the power conversion circuit is transmitted to the high-potential conductor, the intermediate-potential conductor, and the ground potential conductor, so that the heat is distributed to the high-potential-side electric double-layer capacitor and the ground-potential-side electric double-layer capacitor. Is done. For this reason, it can suppress that heat concentrates and transfers to a specific electric double layer capacitor. As a result, it is also possible to arrange the power conversion circuit section close to the high-potential-side electric double-layer capacitor and the ground-potential-side electric double-layer capacitor.

本発明の実施の形態における車載電源装置の構成を示す断面図Sectional drawing which shows the structure of the vehicle-mounted power supply device in embodiment of this invention. 本発明の実施の形態における車載電源装置の構成を示す第１上面外観図FIG. 1 is a first top external view showing a configuration of a vehicle-mounted power supply device according to an embodiment of the present invention. 本発明の実施の形態における車載電源装置の回路構成を示す第１回路ブロック図1 is a first circuit block diagram illustrating a circuit configuration of a vehicle-mounted power supply device according to an embodiment of the present invention. 本発明の実施の形態における車載電源装置の構成を示す第２上面外観図FIG. 2 is a second top external view showing the configuration of the vehicle-mounted power supply device according to the embodiment of the present invention. 本発明の実施の形態における車載電源装置の回路構成を示す第２回路ブロック図FIG. 2 is a second circuit block diagram showing a circuit configuration of the vehicle-mounted power supply device according to the embodiment of the present invention. 従来の車載電源装置の構成を示した外観側面図Exterior side view showing the configuration of a conventional in-vehicle power supply

以下、本発明の実施の形態について図面を用いて説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

（実施の形態）
図１は本発明の実施の形態における車載電源装置の構成を示す断面図、図２は本発明の実施の形態における車載電源装置の構成を示す第１上面外観図である。車載電源装置６は、実装基板７と高電位導体部８と中間電位導体部９と接地電位導体部１０と高電位側電気二重層コンデンサ１１と接地電位側電気二重層コンデンサ１２と入力部１３と出力部１４と電力変換回路部１５と制御回路部１６と、を含む。高電位側電気二重層コンデンサ１１と接地電位側電気二重層コンデンサ１２と電力変換回路部１５と制御回路部１６とは、実装基板７の一方面７Ａに配置されている。入力部１３と出力部１４とは、実装基板７の一方面７Ａあるいは他方面７Ｂのいずれかに配置されている。に配置されている。また、高
電位導体部８と中間電位導体部９と接地電位導体部１０とは、実装基板７に埋設して配置されている。 (Embodiment)
FIG. 1 is a cross-sectional view illustrating a configuration of a vehicle-mounted power supply device according to an embodiment of the present invention, and FIG. 2 is a first top external view illustrating a configuration of the vehicle-mounted power supply device according to the embodiment of the present invention. The in-vehicle power supply 6 includes a mounting board 7, a high-potential conductor 8, an intermediate-potential conductor 9, a ground-potential conductor 10, a high-potential-side electric double-layer capacitor 11, a ground-potential-side electric double-layer capacitor 12, and an input unit 13. It includes an output unit 14, a power conversion circuit unit 15, and a control circuit unit 16. The high potential side electric double layer capacitor 11, the ground potential side electric double layer capacitor 12, the power conversion circuit section 15, and the control circuit section 16 are arranged on one surface 7A of the mounting board 7. The input unit 13 and the output unit 14 are arranged on one surface 7A or the other surface 7B of the mounting board 7. Are located in The high-potential conductor section 8, the intermediate-potential conductor section 9, and the ground-potential conductor section 10 are disposed so as to be embedded in the mounting substrate 7.

高電位側電気二重層コンデンサ１１は、高電位導体部８と中間電位導体部９とに接続されている。接地電位側電気二重層コンデンサ１２は、中間電位導体部９と接地電位導体部１０とに接続されている。 The high-potential-side electric double-layer capacitor 11 is connected to the high-potential conductor 8 and the intermediate-potential conductor 9. The ground potential side electric double layer capacitor 12 is connected to the intermediate potential conductor 9 and the ground potential conductor 10.

電力変換回路部１５は入力部１３と出力部１４に接続されている。そして、電力変換回路部１５は、高電位側電気二重層コンデンサ１１および接地電位側電気二重層コンデンサ１２への充電を行い、高電位側電気二重層コンデンサ１１および接地電位側電気二重層コンデンサ１２からの放電を行う。電力変換回路部１５の動作は制御回路部１６によって制御される。 The power conversion circuit unit 15 is connected to the input unit 13 and the output unit 14. Then, the power conversion circuit unit 15 charges the high-potential-side electric double-layer capacitor 11 and the ground-potential-side electric double-layer capacitor 12, and outputs the charge from the high-potential-side electric double-layer capacitor 11 and the ground-potential-side electric double-layer capacitor 12. Is discharged. The operation of the power conversion circuit unit 15 is controlled by the control circuit unit 16.

高電位側電気二重層コンデンサ１１および接地電位側電気二重層コンデンサ１２はそれぞれ、実装基板７に対向する底面部１７と、底面部１７から引き出されるリード部１８Ａ、１８Ｂを有する。リード部１８Ａ、１８Ｂは高電位導体部８と中間電位導体部９と接地電位導体部１０とへ接合されることで、底面部１７と実装基板７との間には空間部１９が設けられる。そして、高電位側電気二重層コンデンサ１１および接地電位側電気二重層コンデンサ１２は実装基板７に対して離間配置される。 Each of the high-potential-side electric double-layer capacitor 11 and the ground-potential-side electric double-layer capacitor 12 has a bottom portion 17 facing the mounting board 7 and leads 18A and 18B drawn out from the bottom portion 17. The lead portions 18A and 18B are joined to the high potential conductor portion 8, the intermediate potential conductor portion 9, and the ground potential conductor portion 10, so that a space portion 19 is provided between the bottom portion 17 and the mounting board 7. The high-potential-side electric double-layer capacitor 11 and the ground-potential-side electric double-layer capacitor 12 are spaced apart from the mounting board 7.

制御回路部１６は空間部１９に実装配置され、電力変換回路部１５は空間部１９の外側に実装配置されている。 The control circuit section 16 is mounted and arranged in the space section 19, and the power conversion circuit section 15 is mounted and arranged outside the space section 19.

高電位導体部８と高電位側電気二重層コンデンサ１１と中間電位導体部９と接地電位側電気二重層コンデンサ１２と接地電位導体部１０とは、高電位側から順に直列に接続されている。 The high-potential conductor 8, the high-potential-side electric double-layer capacitor 11, the intermediate-potential conductor 9, the ground-potential-side electric double-layer capacitor 12, and the ground-potential conductor 10 are connected in series from the high-potential side.

以上の構成により、電力変換回路部１５から発せられたノイズは、高電位導体部８と中間電位導体部９と接地電位導体部１０へと伝搬されたうえで、高電位導体部８と中間電位導体部９と接地電位導体部１０とに接続された高電位側電気二重層コンデンサ１１および接地電位側電気二重層コンデンサ１２へ吸収される。ここで制御回路部１６は、高電位側電気二重層コンデンサ１１および接地電位側電気二重層コンデンサ１２の下側の空間部１９に配置される。このため制御回路部１６は、高電位導体部８と中間電位導体部９と接地電位導体部１０とに近接した位置に配置される。制御回路部１６の周囲に存在するノイズは高電位導体部８と中間電位導体部９と接地電位導体部１０とによって吸収されやすく、結果として、電力変換回路部１５から発せられたノイズによる制御回路部１６への影響は抑制され、電力変換回路部１５と制御回路部１６とは近接配置が可能となる。 With the configuration described above, the noise generated from the power conversion circuit unit 15 is propagated to the high-potential conductor unit 8, the intermediate-potential conductor unit 9, and the ground-potential conductor unit 10, and then is transmitted to the high-potential conductor unit 8 and the intermediate-potential conductor unit. It is absorbed by the high potential side electric double layer capacitor 11 and the ground potential side electric double layer capacitor 12 connected to the conductor portion 9 and the ground potential conductor portion 10. Here, the control circuit unit 16 is disposed in the space 19 below the high-potential-side electric double-layer capacitor 11 and the ground-potential-side electric double-layer capacitor 12. Therefore, the control circuit section 16 is arranged at a position close to the high potential conductor section 8, the intermediate potential conductor section 9, and the ground potential conductor section 10. Noise existing around the control circuit unit 16 is easily absorbed by the high-potential conductor unit 8, the intermediate-potential conductor unit 9, and the ground-potential conductor unit 10, and as a result, the control circuit due to the noise generated from the power conversion circuit unit 15 The influence on the unit 16 is suppressed, and the power conversion circuit unit 15 and the control circuit unit 16 can be arranged close to each other.

また、電力変換回路部１５から発せられた熱は、実装基板７に比較して伝熱性が高い高電位導体部８へ伝えられたうえで、高電位側電気二重層コンデンサ１１および接地電位側電気二重層コンデンサ１２へ伝わることになる。しかしながら、電力変換回路部１５から発せられた熱は高電位導体部８によって広い面積に分散されたうえで、高電位側電気二重層コンデンサ１１および接地電位側電気二重層コンデンサ１２へ伝えられる。このため、大きな熱が高電位側電気二重層コンデンサ１１へ集中して伝わることを抑制できる。この結果として、電力変換回路部１５と高電位側電気二重層コンデンサ１１および接地電位側電気二重層コンデンサ１２との近接配置も可能となる。 Further, the heat generated from the power conversion circuit unit 15 is transmitted to the high-potential conductor unit 8 having higher heat conductivity than the mounting board 7, and then transferred to the high-potential-side electric double-layer capacitor 11 and the ground potential-side electric unit. It will be transmitted to the double layer capacitor 12. However, the heat generated from the power conversion circuit section 15 is spread over a large area by the high potential conductor section 8 and then transmitted to the high potential side electric double layer capacitor 11 and the ground potential side electric double layer capacitor 12. Therefore, it is possible to suppress a large amount of heat from being intensively transmitted to the high-potential side electric double layer capacitor 11. As a result, the power conversion circuit unit 15 and the high potential side electric double layer capacitor 11 and the ground potential side electric double layer capacitor 12 can be arranged close to each other.

以下で、車載電源装置６の詳細について説明する。図３は本発明の実施の形態における車載電源装置の回路構成を示す第１回路ブロック図であり、車載電源装置６は、予備用の電源あるいは非常用の電源として車両２０の車体２１に搭載されている。車両２０や、入
力部１３に接続された車両用バッテリー２２が健全な条件下で車両２０が起動しているときは、電力変換回路部１５は蓄電部２３への蓄電を連続的あるいは間欠的に行い、車両２０が起動停止したときには蓄電部２３に蓄えられていた電力の全てあるいは一部はグランドへ放電される。また、車両２０が起動しているときに車両２０や車両用バッテリー２２が異常な条件下に陥った場合、所定の負荷２４の駆動が可能となるように、電力変換回路部１５は出力部１４から蓄電部２３に蓄えられた電力を負荷２４へ出力する、あるいは蓄電部２３に蓄えられた電力を出力部１４から負荷２４へ出力可能な状態とする。 Hereinafter, details of the vehicle-mounted power supply device 6 will be described. FIG. 3 is a first circuit block diagram showing a circuit configuration of the vehicle-mounted power supply device according to the embodiment of the present invention. The vehicle-mounted power supply device 6 is mounted on the body 21 of the vehicle 20 as a standby power supply or an emergency power supply. ing. When the vehicle 20 or the vehicle battery 22 connected to the input unit 13 is running under a healthy condition, the power conversion circuit unit 15 continuously or intermittently stores power in the power storage unit 23. When the vehicle 20 starts and stops, all or part of the electric power stored in the power storage unit 23 is discharged to the ground. When the vehicle 20 and the vehicle battery 22 fall under abnormal conditions while the vehicle 20 is running, the power conversion circuit unit 15 is connected to the output unit 14 so that the predetermined load 24 can be driven. To output the power stored in the power storage unit 23 to the load 24, or to enable the power stored in the power storage unit 23 to be output from the output unit 14 to the load 24.

ここで、車両２０や車両用バッテリー２２が健全で正常な条件下であるか、あるいは異常な条件下に陥ったかを判断する基準は、制御回路部１６に接続された信号受信部２８に緊急信号が伝えられたか否かによる判断や、あるいは、入力部１３の電圧値と車両２０の起動状態とに基づいた判断などであってよい。 Here, a criterion for determining whether the vehicle 20 or the vehicle battery 22 is in a healthy and normal condition or an abnormal condition is determined by an emergency signal transmitted to the signal receiving unit 28 connected to the control circuit unit 16. May be determined, or may be determined based on the voltage value of the input unit 13 and the activation state of the vehicle 20.

車載電源装置６の入力部１３と出力部１４との間には電力変換回路部１５が接続されていて、電力変換回路部１５の入力側には充電回路２５が設けられ、出力側には放電回路２６が設けられている。また、充電回路２５と放電回路２６との接続点２７とグランド間には蓄電部２３が接続されて設けられている。蓄電部２３には高電位側電気二重層コンデンサ１１および接地電位側電気二重層コンデンサ１２や、高電位側電気二重層コンデンサ１１および接地電位側電気二重層コンデンサ１２に蓄えられた電力を直接にグランドへ放電可能な電気回路（図示せず）などが設けられている。したがって、接続点２７は先に述べた高電位導体部８の一部であっても、あるいは電力変換回路部１５と高電位導体部８とを接続する接続導体８Ａであってもよい。 A power conversion circuit unit 15 is connected between the input unit 13 and the output unit 14 of the vehicle-mounted power supply device 6, a charging circuit 25 is provided on the input side of the power conversion circuit unit 15, and a discharge circuit is provided on the output side. A circuit 26 is provided. In addition, a power storage unit 23 is connected and provided between a connection point 27 between the charging circuit 25 and the discharging circuit 26 and the ground. The power storage unit 23 directly grounds the power stored in the high-potential-side electric double-layer capacitor 11 and the ground-potential-side electric double-layer capacitor 12 and the power stored in the high-potential-side electric double-layer capacitor 11 and the ground-potential-side electric double-layer capacitor 12. There is provided an electric circuit (not shown) capable of discharging electric power to the battery. Therefore, the connection point 27 may be a part of the high-potential conductor section 8 described above, or may be the connection conductor 8A that connects the power conversion circuit section 15 and the high-potential conductor section 8.

蓄電部２３では、高電位側から順に電力変換回路部１５に接続された高電位導体部８と高電位側電気二重層コンデンサ１１と中間電位導体部９と接地電位側電気二重層コンデンサ１２と接地電位導体部１０とが、直列に接続されている。より詳細には、高電位側電気二重層コンデンサ１１の高電位側のリード部１８Ａが高電位導体部８に、高電位側電気二重層コンデンサ１１の低電位側のリード部１８Ｂが中間電位導体部９に接続されている。同様に、接地電位側電気二重層コンデンサ１２の高電位側のリード部１８Ａが中間電位導体部９に、接地電位側電気二重層コンデンサ１２の低電位側のリード部１８Ｂが接地電位導体部１０に接続されている。また、接地電位導体部１０はグランドに、あるいはグランドに相当する端子や電位に接続されている。 In the power storage unit 23, the high-potential conductor 8, the high-potential electric double-layer capacitor 11, the intermediate-potential conductor 9, the ground-potential electric double-layer capacitor 12, and the ground connected to the power conversion circuit 15 in this order from the high-potential side. The potential conductor 10 is connected in series. More specifically, the high potential side lead 18A of the high potential side electric double layer capacitor 11 is connected to the high potential conductor 8 and the low potential side lead 18B of the high potential side electric double layer capacitor 11 is connected to the intermediate potential conductor. 9 is connected. Similarly, the high potential side lead 18A of the ground potential side electric double layer capacitor 12 is connected to the intermediate potential conductor 9, and the low potential side lead 18B of the ground potential side electric double layer capacitor 12 is connected to the ground potential conductor 10. It is connected. The ground potential conductor 10 is connected to the ground, or to a terminal or a potential corresponding to the ground.

ここで、高電位側電気二重層コンデンサ１１や接地電位側電気二重層コンデンサ１２の蓄電容量は、高電位導体部８や中間電位導体部９や接地電位導体部１０が電力変換回路部１５から発せられたノイズなどを吸収した際に生じる電力に比較して非常に大きな値となっている。また、高電位側電気二重層コンデンサ１１や接地電位側電気二重層コンデンサ１２は制御回路部１６の制御による充電回路２５の動作と制御回路部１６による蓄電部２３に対する電圧検出によって概ね満充電状態に近い状態に充電されているときでも、満充電に伴う電気二重層コンデンサの特性劣化などを考慮し、定格満充電値に比較して低い値に充電されている。このため、高電位側電気二重層コンデンサ１１や接地電位側電気二重層コンデンサ１２は電力変換回路部１５から発せられたノイズなどに伴って高電位導体部８や中間電位導体部９や接地電位導体部１０で生じた電力を容易に吸収することができる。 Here, the storage capacity of the high-potential-side electric double-layer capacitor 11 and the ground-potential-side electric double-layer capacitor 12 is determined by the high-potential conductor section 8, the intermediate-potential conductor section 9, and the ground-potential conductor section 10 emitted from the power conversion circuit section 15. This is a very large value compared to the power generated when absorbing the noise and the like. The high-potential-side electric double-layer capacitor 11 and the ground-potential-side electric double-layer capacitor 12 are almost fully charged by the operation of the charging circuit 25 under the control of the control circuit unit 16 and the detection of the voltage to the power storage unit 23 by the control circuit unit 16. Even when the battery is charged to a close state, the battery is charged to a value lower than the rated full charge value in consideration of the deterioration of the characteristics of the electric double layer capacitor due to the full charge. For this reason, the high-potential-side electric double-layer capacitor 11 and the ground-potential-side electric double-layer capacitor 12 are connected to the high-potential conductor 8, the intermediate-potential conductor 9, and the ground-potential conductor due to noise generated from the power conversion circuit 15. The power generated in the unit 10 can be easily absorbed.

また、高電位側電気二重層コンデンサ１１と接地電位側電気二重層コンデンサ１２とは、実装基板７の一方面７Ａの所定領域２９の範囲内に集中して配置されている。言い換えると、高電位側電気二重層コンデンサ１１と接地電位側電気二重層コンデンサ１２とが集中配置されている面積を所定領域２９としている。このため、高電位導体部８や中間電位導体部９や接地電位導体部１０は少なくともその一部が所定領域２９に相当する位置の実
装基板７の内部に埋設されている。このため、高電位側電気二重層コンデンサ１１と接地電位側電気二重層コンデンサ１２と実装基板７との間に形成される空間部１９に配置される制御回路部１６は、高電位導体部８や中間電位導体部９や接地電位導体部１０の直上もしくは近傍に位置する。そして、空間部１９の外側であり、かつ、所定領域２９の外側に配置された電力変換回路部１５はノイズなどを発するものの、電力変換回路部１５が発したノイズは空間部１９や所定領域２９においては高電位導体部８や中間電位導体部９や接地電位導体部１０によって吸収され易くなる。このため、制御回路部１６がノイズから受ける悪影響は抑制される。ここで、上記の効果をさらに向上させるために、高電位導体部８や中間電位導体部９や接地電位導体部１０は、実装基板７に埋設して設けられ、また高電位導体部８と中間電位導体部９と接地電位導体部１０とが有する面積の総和は、所定領域２９が有する面積よりも広いとよい。 The high-potential-side electric double-layer capacitor 11 and the ground-potential-side electric double-layer capacitor 12 are arranged in a concentrated manner within a predetermined area 29 on one surface 7A of the mounting board 7. In other words, the area where the high-potential-side electric double-layer capacitor 11 and the ground-potential-side electric double-layer capacitor 12 are concentrated is defined as the predetermined region 29. For this reason, at least a part of the high-potential conductor portion 8, the intermediate-potential conductor portion 9, and the ground potential conductor portion 10 is embedded in the mounting substrate 7 at a position corresponding to the predetermined region 29. For this reason, the control circuit unit 16 disposed in the space 19 formed between the high-potential-side electric double-layer capacitor 11, the ground-potential-side electric double-layer capacitor 12, and the mounting board 7 includes the high-potential conductor 8 and It is located immediately above or near the intermediate potential conductor 9 and the ground potential conductor 10. The power conversion circuit 15 disposed outside the space 19 and outside the predetermined area 29 emits noise, but the noise generated by the power conversion circuit 15 is not transmitted to the space 19 or the predetermined area 29. Is easily absorbed by the high potential conductor portion 8, the intermediate potential conductor portion 9, and the ground potential conductor portion 10. For this reason, the adverse effect that the control circuit unit 16 receives from the noise is suppressed. Here, in order to further improve the above-described effects, the high-potential conductor portion 8, the intermediate-potential conductor portion 9, and the ground-potential conductor portion 10 are provided so as to be embedded in the mounting substrate 7, The sum of the areas of the potential conductor 9 and the ground potential conductor 10 may be larger than the area of the predetermined region 29.

また、電力変換回路部１５の充電回路２５や放電回路２６が動作することで発生する熱に関しても高電位導体部８や中間電位導体部９や接地電位導体部１０は、制御回路部１６や高電位側電気二重層コンデンサ１１と接地電位側電気二重層コンデンサ１２を保護することになる。電力変換回路部１５から発せられた熱は、実装基板７に比較して伝熱性が高い高電位導体部８へ伝わったうえで、高電位側電気二重層コンデンサ１１および接地電位側電気二重層コンデンサ１２へ順に伝わることになる。しかしながら、電力変換回路部１５から発せられた熱は高電位導体部８によって広い面積に分散されたあとで、高電位側電気二重層コンデンサ１１および接地電位側電気二重層コンデンサ１２へ伝えられる。このため、大きな熱が高電位側電気二重層コンデンサ１１へ集中して伝わることを抑制できる。この結果として、電力変換回路部１５と、高電位側電気二重層コンデンサ１１および接地電位側電気二重層コンデンサ１２との近接配置も可能となる。 In addition, regarding the heat generated by the operation of the charging circuit 25 and the discharging circuit 26 of the power conversion circuit section 15, the high-potential conductor section 8, the intermediate-potential conductor section 9 and the ground-potential conductor section 10 The potential side electric double layer capacitor 11 and the ground potential side electric double layer capacitor 12 are protected. The heat generated from the power conversion circuit unit 15 is transmitted to the high-potential conductor unit 8 having higher heat conductivity than the mounting substrate 7 and then to the high-potential-side electric double-layer capacitor 11 and the ground-potential-side electric double-layer capacitor. It will be transmitted to 12 in order. However, the heat generated from the power conversion circuit unit 15 is distributed to a large area by the high-potential conductor unit 8, and then transmitted to the high-potential-side electric double-layer capacitor 11 and the ground-potential-side electric double-layer capacitor 12. Therefore, it is possible to suppress a large amount of heat from being intensively transmitted to the high-potential side electric double layer capacitor 11. As a result, the power conversion circuit section 15 can be arranged close to the high-potential-side electric double-layer capacitor 11 and the ground-potential-side electric double-layer capacitor 12.

また、高電位側電気二重層コンデンサ１１および接地電位側電気二重層コンデンサ１２は実装時に接合部３０からの熱の影響を抑制するために、長い寸法のリード部１８Ａ、１８Ｂが用いられる。このため、空間部１９がデッドスペースとして車載電源装置６の容積を大きくする要因となるものの、近接配置された電力変換回路部１５が発するノイズからの影響が、直上もしくは近傍に位置して高電位導体部８や中間電位導体部９や接地電位導体部１０によって抑制される空間部１９へ、制御回路部１６が配置される。これによって、車載電源装置６の床面積の大型化を抑制することができ、容積の大型化も抑制される。 The high potential side electric double layer capacitor 11 and the ground potential side electric double layer capacitor 12 use long lead portions 18A and 18B in order to suppress the influence of heat from the joint 30 during mounting. For this reason, although the space portion 19 becomes a dead space and causes the volume of the vehicle-mounted power supply device 6 to increase, the influence from the noise generated by the power conversion circuit portion 15 disposed close to the space portion 19 is located immediately above or in the vicinity of the high potential The control circuit section 16 is arranged in the space 19 which is suppressed by the conductor section 8, the intermediate potential conductor section 9 and the ground potential conductor section 10. This can suppress an increase in the floor area of the vehicle-mounted power supply device 6 and an increase in the volume.

ここで、高電位導体部８と中間電位導体部９と接地電位導体部１０とは、実装基板７に埋設して配置され、高電位導体部８や中間電位導体部９あるいは接地電位導体部１０の一部が、実装基板７の一方面７Ａから露出する形で埋設されていてもよい。言い換えると、高電位導体部８と中間電位導体部９と接地電位導体部１０とは、実装基板７に完全に埋没して配置される必要はない。 Here, the high-potential conductor section 8, the intermediate-potential conductor section 9, and the ground-potential conductor section 10 are disposed so as to be buried in the mounting substrate 7, and the high-potential conductor section 8, the intermediate-potential conductor section 9, or the ground-potential conductor section 10 May be embedded so as to be exposed from one surface 7A of the mounting substrate 7. In other words, the high-potential conductor 8, the intermediate-potential conductor 9, and the ground-potential conductor 10 do not need to be completely buried in the mounting substrate 7.

また、高電位側電気二重層コンデンサ１１および接地電位側電気二重層コンデンサ１２のリード部１８Ａ、１８Ｂは実装基板７の他方面７Ｂで接合部３０によって接合されているが、高電位導体部８や中間電位導体部９や接地電位導体部１０と接合部３０とはスルーホールなどによって接続されていればよい。 The lead portions 18A and 18B of the high-potential-side electric double-layer capacitor 11 and the ground-potential-side electric double-layer capacitor 12 are joined by the joining portion 30 on the other surface 7B of the mounting substrate 7, but the high-potential conductor 8 and The intermediate potential conductor 9 or the ground potential conductor 10 and the joint 30 may be connected by a through hole or the like.

ここでは図２に示すように、高電位導体部８と高電位側電気二重層コンデンサ１１と中間電位導体部９と接地電位側電気二重層コンデンサ１２と接地電位導体部１０とは、図中の左右方向に概ね列状に配置されている。しかしながら、必ず列状に配置される必要は無く、高電位導体部８と高電位側電気二重層コンデンサ１１と中間電位導体部９と接地電位側電気二重層コンデンサ１２と接地電位導体部１０との配置、接続は上面視で蛇行した形態であってもよく、直列に接続されていればよい。 Here, as shown in FIG. 2, the high-potential conductor portion 8, the high-potential-side electric double-layer capacitor 11, the intermediate-potential conductor portion 9, the ground-potential-side electric double-layer capacitor 12, and the ground potential conductor portion 10 They are arranged substantially in a row in the left-right direction. However, it is not always necessary to arrange them in a row, and the high-potential conductor 8, the high-potential-side electric double-layer capacitor 11, the intermediate-potential conductor 9, the ground-potential-side electric double-layer capacitor 12, and the ground potential conductor 10 The arrangement and connection may be in a meandering form as viewed from above, and may be connected in series.

以上で説明した実施の形態では、高電位側電気二重層コンデンサ１１と接地電位側電気二重層コンデンサ１２とは、それぞれが単一の電気二重層コンデンサによって構成されている。この一方で、図４の本発明の実施の形態における車載電源装置の構成を示す第２上面外観図に示すように、高電位側電気二重層コンデンサ１１は、高電位導体部８と中間電位導体部９との間に接続されて、かつ、並列に接続された複数の電気二重層コンデンサによって構成されるとよい。ここでは第１高電位側電気二重層コンデンサ１１Ａ、第２高電位側電気二重層コンデンサ１１Ｂ、第３高電位側電気二重層コンデンサ１１Ｃの３つの電気二重層コンデンサが並列に接続された一例が示されているが、並列された電気二重層コンデンサの数量に特に限りはない。 In the embodiment described above, each of the high potential side electric double layer capacitor 11 and the ground potential side electric double layer capacitor 12 is constituted by a single electric double layer capacitor. On the other hand, as shown in FIG. 4 showing a second top view of the configuration of the vehicle-mounted power supply device according to the embodiment of the present invention, the high-potential-side electric double-layer capacitor 11 includes a high-potential conductor 8 and an intermediate-potential conductor. It is preferable that a plurality of electric double layer capacitors connected between the unit 9 and connected in parallel. Here, an example is shown in which three electric double layer capacitors of a first high potential side electric double layer capacitor 11A, a second high potential side electric double layer capacitor 11B, and a third high potential side electric double layer capacitor 11C are connected in parallel. However, the number of parallel electric double layer capacitors is not particularly limited.

同様に、接地電位側電気二重層コンデンサ１２は、中間電位導体部９と接地電位導体部１０との間に接続されて、かつ、並列に接続された複数の電気二重層コンデンサによって構成されるとよい。ここでは第１接地電位側電気二重層コンデンサ１２Ａ、第２接地電位側電気二重層コンデンサ１２Ｂ、第３接地電位側電気二重層コンデンサ１２Ｃの３つの電気二重層コンデンサが並列に接続された一例が示されているが、並列された電気二重層コンデンサの数量に特に限りはない。 Similarly, the ground potential side electric double layer capacitor 12 is connected between the intermediate potential conductor portion 9 and the ground potential conductor portion 10 and is constituted by a plurality of electric double layer capacitors connected in parallel. Good. Here, an example is shown in which three electric double layer capacitors of a first ground potential side electric double layer capacitor 12A, a second ground potential side electric double layer capacitor 12B, and a third ground potential side electric double layer capacitor 12C are connected in parallel. However, the number of parallel electric double layer capacitors is not particularly limited.

高電位側電気二重層コンデンサ１１および接地電位側電気二重層コンデンサ１２が、並列に接続配置された複数の電気二重層コンデンサによって構成されることによって、特に電力変換回路部１５が発する熱は、複数の第１高電位側電気二重層コンデンサ１１Ａ、第２高電位側電気二重層コンデンサ１１Ｂ、第３高電位側電気二重層コンデンサ１１Ｃへ分散して伝えられ、さらに第１接地電位側電気二重層コンデンサ１２Ａ、第２接地電位側電気二重層コンデンサ１２Ｂ、第３接地電位側電気二重層コンデンサ１２Ｃへと伝えられる。 Since the high-potential-side electric double-layer capacitor 11 and the ground potential-side electric double-layer capacitor 12 are constituted by a plurality of electric double-layer capacitors connected in parallel, in particular, the heat generated by the power And distributed to the first high-potential-side electric double-layer capacitor 11A, the second high-potential-side electric double-layer capacitor 11B, and the third high-potential-side electric double-layer capacitor 11C. 12A, the second ground potential side electric double layer capacitor 12B, and the third ground potential side electric double layer capacitor 12C.

これにより、個々の電気二重層コンデンサの温度上昇が抑制される。結果として、高電位側電気二重層コンデンサ１１と接地電位側電気二重層コンデンサ１２と発熱源の電力変換回路部１５とのさらなる近接配置が可能となる。これに加え、電力変換回路部１５から発せられて高電位導体部８を通じて伝えられた熱が容易に分散することによって個々の電気二重層コンデンサの温度上昇が抑制される。したがって、高温に起因する電気二重層コンデンサの特性劣化も抑制される。また、個々の電気二重層コンデンサにおける特性の劣化に偏りも生じ難いので、蓄電部２３の信頼性、および車載電源装置６の動作信頼性が向上する。 Thereby, the temperature rise of each electric double layer capacitor is suppressed. As a result, it is possible to further arrange the high-potential-side electric double-layer capacitor 11, the ground-potential-side electric double-layer capacitor 12, and the power conversion circuit unit 15 of the heat source. In addition, the heat generated from the power conversion circuit section 15 and transmitted through the high-potential conductor section 8 is easily dispersed, so that the temperature rise of each electric double-layer capacitor is suppressed. Therefore, the characteristic deterioration of the electric double layer capacitor due to the high temperature is also suppressed. In addition, since the characteristics of the individual electric double-layer capacitors are unlikely to be biased, the reliability of the power storage unit 23 and the operation reliability of the vehicle-mounted power supply device 6 are improved.

また、以上で説明した実施の形態では、蓄電部２３は高電位側電気二重層コンデンサ１１と接地電位側電気二重層コンデンサ１２と、高電位導体部８と中間電位導体部９と接地電位導体部１０とを有し、高電位側である電力変換回路部１５に接続されている順に、高電位導体部８と高電位側電気二重層コンデンサ１１と中間電位導体部９と接地電位側電気二重層コンデンサ１２と接地電位導体部１０とが直列に接続されていた。 In the embodiment described above, power storage unit 23 includes high-potential-side electric double-layer capacitor 11, ground-potential-side electric double-layer capacitor 12, high-potential conductor 8, intermediate-potential conductor 9, and ground-potential conductor 9. 10 and are connected to the power conversion circuit section 15 on the high potential side in the order of the high potential conductor section 8, the high potential side electric double layer capacitor 11, the intermediate potential conductor section 9, and the ground potential side electric double layer. The capacitor 12 and the ground potential conductor 10 were connected in series.

この一方で、図５の本発明の実施の形態における車載電源装置の回路構成を示す第２回路ブロック図に示すように、中間電位導体部９は高電位側から順に高電位側電気二重層コンデンサ１１に接続された第１中間電位導体部９Ａ、第２中間電位導体部９Ｂ、接地電位側電気二重層コンデンサ１２に接続された第３中間電位導体部９Ｃ、の複数の分割導体部３２によって構成されてもよい。そして、第１中間電位導体部９Ａと第２中間電位導体部９Ｂとの間には第１中間電気二重層コンデンサ３１Ａが接続され、第２中間電位導体部９Ｂと第３中間電位導体部９Ｃとの間には第２中間電気二重層コンデンサ３１Ｂが接続されている。 On the other hand, as shown in the second circuit block diagram showing the circuit configuration of the vehicle-mounted power supply device according to the embodiment of the present invention in FIG. 5, the intermediate potential conductor portions 9 are sequentially arranged from the high potential side to the high potential side electric double layer capacitor. And a third intermediate potential conductor 9C connected to the ground potential side electric double layer capacitor 12 and a plurality of divided conductor portions 32 of the first intermediate potential conductor 9A, the second intermediate potential conductor 9B, and the third intermediate potential conductor 9C connected to the ground potential side electric double layer capacitor 12. May be done. A first intermediate electric double layer capacitor 31A is connected between the first intermediate potential conductor 9A and the second intermediate potential conductor 9B, and the second intermediate potential conductor 9B and the third intermediate potential conductor 9C are connected to each other. The second intermediate electric double-layer capacitor 31B is connected between them.

言い換えると、第１中間電位導体部９Ａと第１中間電気二重層コンデンサ３１Ａと第２
中間電位導体部９Ｂと第２中間電気二重層コンデンサ３１Ｂと第３中間電位導体部９Ｃとが直列に接続されている。すなわち、第１中間電位導体部９Ａ、第２中間電位導体部９Ｂ、第３中間電位導体部９Ｃに相当する複数の分割導体部３２における個々の分割導体部３２の間には中間電気二重層コンデンサ３１が接続されている。 In other words, the first intermediate potential conductor 9A, the first intermediate electric double layer capacitor 31A and the second
The intermediate potential conductor 9B, the second intermediate electric double layer capacitor 31B, and the third intermediate potential conductor 9C are connected in series. That is, an intermediate electric double layer capacitor is provided between each of the plurality of divided conductor portions 32 corresponding to the first intermediate potential conductor portion 9A, the second intermediate potential conductor portion 9B, and the third intermediate potential conductor portion 9C. 31 are connected.

これにより、高電位導体部８と中間電位導体部９と接地電位導体部１０とに電力変換回路部１５からのノイズに起因して発生する電力が大きくなっても、直列に接続された多段の電気二重層コンデンサが電力を実質的に均等に吸収する。この結果、高電位側電気二重層コンデンサ１１と中間電気二重層コンデンサ３１と接地電位側電気二重層コンデンサ１２とが電力変換回路部１５から発せられるノイズを効率よく大量に吸収することができ、高電位側電気二重層コンデンサ１１と接地電位側電気二重層コンデンサ１２と発熱源の電力変換回路部１５とのさらなる近接配置が可能となる。また、高電位側電気二重層コンデンサ１１と中間電気二重層コンデンサ３１と接地電位側電気二重層コンデンサ１２とによって、電力変換回路部１５から発せられて高電位導体部８を通じて伝えられた熱が容易に分散することにより温度上昇が抑制されるので、高温に起因する電気二重層コンデンサの特性劣化も抑制される。 Thereby, even if the power generated due to the noise from the power conversion circuit unit 15 becomes large in the high-potential conductor unit 8, the intermediate-potential conductor unit 9, and the ground-potential conductor unit 10, the multi-stage connected in series The electric double layer capacitor absorbs power substantially evenly. As a result, the high-potential side electric double layer capacitor 11, the intermediate electric double layer capacitor 31, and the ground potential side electric double layer capacitor 12 can efficiently absorb a large amount of noise generated from the power conversion circuit unit 15, and The electric potential side electric double layer capacitor 11, the ground potential side electric double layer capacitor 12, and the power conversion circuit unit 15 of the heat source can be arranged closer to each other. Further, the heat generated from the power conversion circuit unit 15 and transmitted through the high-potential conductor unit 8 is easily transmitted by the high-potential-side electric double-layer capacitor 11, the intermediate electric double-layer capacitor 31, and the ground potential-side electric double-layer capacitor 12. , The temperature rise is suppressed, so that the characteristic deterioration of the electric double layer capacitor due to the high temperature is also suppressed.

また、中間電気二重層コンデンサ３１もまた高電位側電気二重層コンデンサ１１や接地電位側電気二重層コンデンサ１２と同様に、実装基板７に対向する底面部１７と、底面部１７から引き出されるリード部１８Ａ、１８Ｂを有する。そして、電力変換回路部１５は、中間電気二重層コンデンサ３１への充電および中間電気二重層コンデンサ３１からの放電も行うことになる。 The intermediate electric double layer capacitor 31 also has a bottom portion 17 facing the mounting board 7 and a lead portion drawn out from the bottom portion 17, similarly to the high potential side electric double layer capacitor 11 and the ground potential side electric double layer capacitor 12. 18A and 18B. Then, the power conversion circuit unit 15 also performs charging of the intermediate electric double layer capacitor 31 and discharging of the intermediate electric double layer capacitor 31.

さらに、ここでは図示していないが、中間電気二重層コンデンサ３１もまた先に述べたように、並列に接続された複数の電気二重層コンデンサによって構成されるとよい。このとき、高電位側電気二重層コンデンサ１１や接地電位側電気二重層コンデンサ１２、および中間電気二重層コンデンサ３１は、同一特性でかつ、同一の数量で並列配置された複数の電気二重層コンデンサによって構成されるとよい。これにより、高電位側電気二重層コンデンサ１１や接地電位側電気二重層コンデンサ１２、および中間電気二重層コンデンサ３１が有する電気的特性が均一化され、蓄電部２３の信頼性、および車載電源装置６の動作信頼性が向上する。 Further, although not shown here, the intermediate electric double layer capacitor 31 may also be constituted by a plurality of electric double layer capacitors connected in parallel as described above. At this time, the high-potential-side electric double-layer capacitor 11, the ground potential-side electric double-layer capacitor 12, and the intermediate electric double-layer capacitor 31 have the same characteristics and the same number of electric double-layer capacitors arranged in parallel. It is good to be composed. Thereby, the electrical characteristics of the high-potential-side electric double-layer capacitor 11, the ground-potential-side electric double-layer capacitor 12, and the intermediate electric double-layer capacitor 31 are made uniform, and the reliability of the power storage unit 23 and the on-vehicle power supply 6 Operation reliability is improved.

本発明の車載電源装置は、デバイスの近接配置を可能とする効果を有し、各種電子機器において有用である。 INDUSTRIAL APPLICABILITY The on-vehicle power supply device of the present invention has an effect of allowing devices to be arranged in close proximity, and is useful in various electronic devices.

６車載電源装置
７実装基板
８高電位導体部
９中間電位導体部
９Ａ第１中間電位導体部
９Ｂ第２中間電位導体部
９Ｃ第３中間電位導体部
１０接地電位導体部
１１高電位側電気二重層コンデンサ
１１Ａ第１高電位側電気二重層コンデンサ
１１Ｂ第２高電位側電気二重層コンデンサ
１１Ｃ第３高電位側電気二重層コンデンサ
１２接地電位側電気二重層コンデンサ
１２Ａ第１接地電位側電気二重層コンデンサ
１２Ｂ第２接地電位側電気二重層コンデンサ
１２Ｃ第３接地電位側電気二重層コンデンサ
１３入力部
１４出力部
１５電力変換回路部
１６制御回路部
１７底面部
１８Ａリード部
１８Ｂリード部
１９空間部
２０車両
２１車体
２２車両用バッテリー
２３蓄電部
２４負荷
２５充電回路
２６放電回路
２７接続点
２８信号受信部
２９所定領域
３０接合部
３１中間電気二重層コンデンサ
３１Ａ第１中間電気二重層コンデンサ
３１Ｂ第２中間電気二重層コンデンサ
３２分割導体部 Reference Signs List 6 in-vehicle power supply device 7 mounting substrate 8 high-potential conductor 9 intermediate-potential conductor 9A first intermediate-potential conductor 9B second intermediate-potential conductor 9C third intermediate-potential conductor 10 ground potential conductor 11 high-potential-side electric double layer Capacitor 11A First high potential side electric double layer capacitor 11B Second high potential side electric double layer capacitor 11C Third high potential side electric double layer capacitor 12 Ground potential side electric double layer capacitor 12A First ground potential side electric double layer capacitor 12B 2nd ground potential side electric double layer capacitor 12C 3rd ground potential side electric double layer capacitor 13 input part 14 output part 15 power conversion circuit part 16 control circuit part 17 bottom part 18A lead part 18B lead part 19 space part 20 vehicle 21 vehicle body 22 vehicle battery 23 power storage unit 24 load 25 charging circuit 26 discharging circuit 27 connection 28 signal receiving unit 29 a predetermined region 30 junction 31 intermediate electric double layer capacitor 31A first intermediate electric double layer capacitor 31B second intermediate electric double layer capacitor 32 divided conductor sections

Claims

A mounting board,
Embedded in the mounting board, a high potential conductor, an intermediate potential conductor, and a ground potential conductor,
On one surface of the mounting substrate, a high-potential-side electric double-layer capacitor connected to the high-potential conductor and the intermediate-potential conductor, and a ground connected to the intermediate-potential conductor and the ground-potential conductor. A potential side electric double layer capacitor,
An input unit and an output unit arranged on the one surface or the other surface of the mounting board,
The high-potential-side electric double-layer capacitor and the high-potential-side electric double-layer capacitor are connected to the input unit and the output unit, and are disposed on the one surface of the mounting board and charge and discharge the high-potential-side electric double-layer capacitor. A power conversion circuit unit for discharging from the double-layer capacitor and the ground potential side electric double-layer capacitor,
A control circuit unit disposed on the one surface of the mounting board and controlling operation of the power conversion circuit unit,
With
The high-potential-side electric double-layer capacitor and the ground potential-side electric double-layer capacitor each have a bottom portion facing the mounting board, and a lead portion pulled out from the bottom portion is the high-potential conductor portion and the lead portion. By a space between the mounting board and the bottom surface provided by being joined to the intermediate potential conductor and the ground potential conductor, the space is separated from the mounting board,
The control circuit unit is mounted and arranged in the space unit, and the power conversion circuit unit is mounted and arranged outside the space unit,
The high-potential conductor, the high-potential-side electric double-layer capacitor, the intermediate-potential conductor, the ground-potential-side electric double-layer capacitor, and the ground-potential conductor are connected in series from the high-potential side,
In-vehicle power supply.

The high-potential-side electric double-layer capacitor is composed of a plurality of double-layer capacitors connected in parallel to the high-potential conductor and the intermediate-potential conductor,
The ground potential side electric double layer capacitor comprises a plurality of electric double layer capacitors connected in parallel to the intermediate potential conductor portion and the ground potential conductor portion,
The in-vehicle power supply device according to claim 1.

The intermediate potential conductor is constituted by a plurality of divided conductors,
The plurality of divided conductors are connected in series by connecting an intermediate electric double-layer capacitor having a bottom surface facing the mounting board between the individual divided conductors in the plurality of divided conductors,
The power conversion circuit unit further performs charging to the intermediate electric double layer capacitor and discharging from the intermediate electric double layer capacitor,
The in-vehicle power supply device according to claim 1.

The intermediate electric double layer capacitor is composed of a plurality of electric double layer capacitors connected in parallel between the individual divided conductor portions,
The vehicle-mounted power supply device according to claim 3.