WO2017163833A1 - Structure for protecting circuit directly downstream of battery - Google Patents
Structure for protecting circuit directly downstream of battery Download PDFInfo
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- WO2017163833A1 WO2017163833A1 PCT/JP2017/008703 JP2017008703W WO2017163833A1 WO 2017163833 A1 WO2017163833 A1 WO 2017163833A1 JP 2017008703 W JP2017008703 W JP 2017008703W WO 2017163833 A1 WO2017163833 A1 WO 2017163833A1
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- circuit
- battery
- vehicle
- starter
- terminal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
Definitions
- the present invention relates to a protection structure for a battery direct circuit that protects a direct circuit reaching an in-vehicle device directly connected to a positive terminal of a battery mounted on a vehicle from a fire caused by an overcurrent.
- a circuit for supplying power to various in-vehicle devices has been connected to the plus terminal of the battery mounted on the vehicle, and in particular, a direct circuit to the in-vehicle device such as a starter that is directly connected to the plus terminal of the battery. It is assumed that a large current of 400 A or more flows in the short term.
- the battery is generally disposed in the engine room, and the path length of the direct circuit that connects the input terminal of the starter and the positive terminal of the battery is also short. Even without providing a protective function, a short circuit could be avoided.
- a battery may be mounted on the rear side of a vehicle compartment in order to narrow the engine room. is there.
- the path length of the direct circuit that connects the positive terminal of the battery disposed in the rear of the vehicle and the input terminal such as a starter disposed in the engine room in front of the vehicle becomes long, and a protection function has to be provided. .
- the present invention has been made in the background of the above-mentioned circumstances, and the problem to be solved is that a special space is not required around the positive terminal of the battery, and the workability of assembling the circuit directly under the battery is deteriorated. It is an object of the present invention to provide a novel protection structure for a battery direct circuit that can add a circuit breaker for the battery direct circuit.
- the first aspect of the present invention relating to the protection structure for the battery direct circuit is a protection structure for the battery direct circuit that protects the direct circuit reaching the in-vehicle device directly connected to the positive terminal of the battery mounted on the vehicle,
- the negative terminal of the battery is connected to the body of the vehicle through an earth circuit having a circuit breaker, while the circuit breaker is set to protect the circuit immediately below. .
- the negative terminal of the battery is connected to the vehicle body via the ground circuit having the circuit breaker, and the circuit breaker is connected to the vehicle-mounted device directly connected to the battery positive terminal. It is set to protect. Therefore, when an overcurrent flows in the circuit directly under the battery, the circuit breaker is reliably interrupted in the closed circuit that returns from the ground wire of the in-vehicle device to the negative terminal of the battery through the body and the ground circuit. The protection of the direct circuit can be realized stably. In addition, since the circuit breaker of the earth circuit is set to protect the circuit immediately below, it is possible to reliably prevent the circuit breaker from being interrupted when protection is unnecessary.
- the circuit breaker necessary for protecting the circuit directly under the battery is provided in the ground circuit that connects the negative terminal of the battery and the body, a special space is required around the positive terminal of the battery with no free space. Therefore, it is possible to provide a circuit breaker, and it is advantageously avoided that the workability of assembling a plurality of direct circuits to the positive terminal of the battery is deteriorated.
- the addition of a circuit breaker for protecting the battery direct circuit can be realized while improving space efficiency and assembly workability. Moreover, it is only necessary to connect the negative terminal of the battery to an arbitrary location selected from a wide body, and since the path of the ground circuit can be set relatively short, the ground circuit itself can be routed freely and has good assembly workability. Can be obtained.
- the battery in the battery direct circuit protection structure according to the first aspect, is disposed in a vehicle interior of the vehicle, while the vehicle is mounted on the vehicle.
- the direct circuit leading to the device is a power supply circuit including a starter circuit reaching a starter disposed in the engine room of the vehicle.
- the battery is disposed in the vehicle interior of the vehicle, and the in-vehicle device is the starter and the electrical junction box disposed in the engine room, and the direct circuit is connected to the starter and the electrical from the positive terminal of the battery.
- It is a power supply circuit including a starter circuit leading to a connection box.
- it is essential to provide the starter circuit with a protective structure.
- the protection structure for the battery direct circuit according to this aspect is employed, it is possible to set an earth circuit including a circuit breaker for protecting the starter circuit with good space efficiency and good workability.
- a third aspect of the present invention relating to a protection structure for a battery direct circuit is a pair of battery protection circuits according to the first or second aspect, wherein the breaker is connected via a fusing part.
- the circuit breaker since the circuit breaker includes the pair of terminal portions connected via the fusing portion, one of the terminal portions can be easily and surely connected to the body by bolt fastening or the like.
- the other end of the terminal can be easily and reliably connected to the negative terminal of the battery via the ground wire connected to the negative terminal of the battery, and the construction and addition of the ground circuit should be performed with good workability. Can do.
- the negative terminal of the battery is directly connected to the vehicle body via an earth circuit having a circuit breaker, and the circuit breaker is simply set to protect the circuit directly below.
- a protection structure for a battery direct circuit that protects a direct circuit that reaches an in-vehicle device that is directly connected to a positive terminal of a battery mounted on the vehicle can be advantageously constructed.
- the circuit breaker since the circuit breaker only needs to be provided in the ground circuit connected to the negative terminal of the battery, it is possible to provide the circuit breaker without requiring any special space around the positive terminal of the battery that has no free space. Thus, it is advantageously avoided that the workability of assembling a plurality of direct circuits with respect to the positive terminal of the battery is deteriorated.
- FIGS. 1 and 2 show an example in which a protection structure 10 for a circuit directly under a battery according to an embodiment of the present invention is applied to a vehicle 12 mounted with a battery in a room.
- the vehicle 12 on which the protection structure 10 for the circuit directly under the battery is mounted has an engine room 16 positioned on the front side (left side in FIG. 1) and a rear side (in FIG. 1) across the panel 14. , Right side).
- an engine 20 and a starter 22 that is a starting device for the engine 20 are mounted.
- an auxiliary battery 24 is mounted on the rear side of the passenger compartment 18.
- An electric wire 28 is routed between the input terminal 23 of the starter 22 mounted in the engine room 16 and the positive terminal 26 of the battery 24 mounted on the rear side of the passenger compartment 18.
- the positive terminal 26 of the battery 24 and the input terminal 23 of the starter 22 are electrically connected to supply power from the battery 24 to the starter 22.
- the starter 22 as the in-vehicle device is directly connected to the plus terminal 26 of the battery 24 disposed in the passenger compartment 18 of the vehicle 12 via the electric wire 28, and the plus of the battery 24 is added.
- a starter circuit 30 is formed as a direct circuit including the terminal 26, the electric wire 28, and the input terminal 23 of the starter 22, and reaches the starter 22 directly connected to the plus terminal 26 of the battery 24.
- a branch circuit 36 is provided on the electric wire 28 extending from the positive terminal 26 of the battery 24 toward the starter 22, and an end of the branch circuit 36 is an input terminal (not shown) of an electrical connection box 38 such as a relay box. And is branched to further branch wires 42a, 42b, 42c connected to various on-vehicle electrical components via fuses 40a, 40b, 40c, relays (not shown), and the like.
- a circuit directly below the plus terminal 26 of the battery 24 and the starter 22 and the electrical connection box 38 that are on-vehicle devices is a power circuit including the starter circuit 30.
- one end of a ground wire 46 is connected to the negative terminal 44 of the battery 24, and the other end of the ground wire 46 is connected to the body 34 via a fuse 48 as a circuit breaker.
- the fuse 48 is provided with a part of a pair of terminal portions 54 a and 54 b connected to each other via a fusing portion 52 accommodated in a case 50 made of synthetic resin so as to protrude from the case 50. It has been configured.
- One terminal portion 54a projecting to the side surface (left side in FIG. 2) of the case 50 is fastened and fixed to the body 34 by a bolt 56, while on the upper surface (upper side in FIG. 2) of the case 50.
- the other protruding terminal portion 54b is connected to a ground wire 46 connected to the negative terminal 44 of the battery 24, and includes a ground circuit 46, a body 34, and a fuse 48 connected between them. 60 is configured.
- the fuse 48 having such a structure, the connection of the one terminal portion 54a to the body 34 and the connection of the other terminal portion 54b to the ground wire 46 can be reliably and stably realized.
- the ground circuit 60 can be constructed or added with good workability.
- the fuse 48 it is necessary to set the fuse 48 as a circuit breaker so as to protect the power supply circuit including the starter circuit 30 which is a direct circuit. Specifically, it is assumed that a large current of 400 A or more flows in the starter circuit 30 in the short term. Therefore, it is desirable that the capacity of the fuse 48 is set to be 400 A or more in accordance with the current value.
- the fuse 48 is surely avoided from being interrupted.
- the capacity of the fuse 48 provided in the ground circuit 60 is set to a very large capacity, adverse effects on other in-vehicle devices connected to the body 34 are advantageously avoided.
- the fuse 48 necessary for protecting the starter circuit 30 that is the direct circuit of the battery 24 is connected to the negative terminal 44 and the body 34 of the battery 24. Are provided in a ground circuit 60 for connecting the two. Therefore, the fuse 48 can be provided without requiring a special space around the positive terminal 26 of the battery 24 having no empty space. Thereby, the fuse 48 and the like that protect the starter circuit 30 that is a circuit directly below the battery 24 are easily added without deteriorating the workability of the work of assembling a plurality of circuits directly below the plus terminal 26 of the battery 24. be able to.
- the addition of a fuse necessary for protecting the starter circuit 30 can be realized while improving space efficiency and assembly workability.
- the earth circuit 60 that connects the negative terminal 44 of the battery 24 to the ground may be connected to any location selected from the wide body 34, the path length of the earth circuit 60 can be set relatively short. As a result, it is possible to obtain both the degree of freedom of wiring of the ground circuit 60 itself and good assembly workability.
- the battery 24 is disposed in the passenger compartment 18 and the starter 22 is disposed in the engine room 16, and the path length of the starter circuit 30 that connects the two is increased. It is essential to provide the starter circuit 30 with a protective structure.
- the protection structure 10 for the battery direct circuit according to the present embodiment is employed, the negative terminal 44 of the battery 24 is connected to the body 34 via the earth circuit 60 having a fuse having a capacity for protecting the starter circuit 30.
- a protective structure for protecting the starter circuit 30 with good space efficiency and good workability can be constructed by a simple structure that is connected to the ground.
- the circuit breaker provided in the ground circuit 60 is not limited to the illustrated fuse 48, and may be any circuit that cuts off when an overcurrent flows through the battery direct circuit so as to protect the battery direct circuit. Any known circuit breaker may be employed.
- the protection structure 10 for a circuit directly under the battery having a structure according to the present embodiment the battery 24 that is separated from the periphery of the plus terminal 26 of the battery 24 with a limited free space and has a relatively large space.
- a circuit breaker can be arranged at any location in the region from the negative terminal 44 to the body 34.
- the explosive type circuit breaker that uses a relatively large explosive to break the wire is used, and the grounding is more instantaneous than in the case of a fuse that cuts off based on the fusing of the fusing part due to overcurrent Joule heat.
- the circuit 60 may be shut off.
Abstract
The objective of the present invention is to provide a novel structure for protecting a circuit directly downstream of a battery, with which it is possible to add a breaker for the circuit directly downstream of the battery without causing a deterioration in workability when assembling the circuit directly downstream of the battery, and without the need for a special space around the positive terminal of the battery.
In order to protect a directly-downstream circuit 30 extending to vehicle-mounted equipment 22 directly connected to a positive terminal 26 of a battery 24 mounted in a vehicle 12, a negative terminal 44 of the battery 24 is connected to a body 34 of the vehicle 12 via an earthing circuit 60 provided with an isolator 48, while the isolator 48 is set in such a way as to protect the directly-downstream circuit 30.
Description
本発明は、車両に搭載されたバッテリのプラス端子に直接接続された車載機器に至る直下回路を、過電流による火災等から保護する、バッテリ直下回路の保護構造に関するものである。
The present invention relates to a protection structure for a battery direct circuit that protects a direct circuit reaching an in-vehicle device directly connected to a positive terminal of a battery mounted on a vehicle from a fire caused by an overcurrent.
従来から、車両に搭載されたバッテリのプラス端子には、各種車載機器へ電源を供給する回路が接続されており、特にバッテリのプラス端子に直接接続される、スタータ等の車載機器に至る直下回路は、短期的には４００Ａ以上の大電流が流れることが想定されている。
Conventionally, a circuit for supplying power to various in-vehicle devices has been connected to the plus terminal of the battery mounted on the vehicle, and in particular, a direct circuit to the in-vehicle device such as a starter that is directly connected to the plus terminal of the battery. It is assumed that a large current of 400 A or more flows in the short term.
ところで、従来のガソリンエンジン車等においては、バッテリはエンジンルーム内に配設されることが一般的であり、スタータ等の入力端子とバッテリのプラス端子を接続する直下回路の経路長も短いことから、保護機能を設けなくても短絡を回避することができた。
By the way, in a conventional gasoline engine vehicle or the like, the battery is generally disposed in the engine room, and the path length of the direct circuit that connects the input terminal of the starter and the positive terminal of the battery is also short. Even without providing a protective function, a short circuit could be avoided.
一方、近年のエンジンルームの狭スペース化等のため、例えば、特開２０１６－３２３８８号公報（特許文献１）等に示されているように、バッテリが車室内のリア側に搭載される場合がある。この場合、車両後方に配設されたバッテリのプラス端子と車両前方のエンジンルームに配設けられたスタータ等の入力端子を接続する直下回路の経路長が長くなり、保護機能を設けざるを得なくなる。
On the other hand, in recent years, for example, as shown in JP-A-2016-32388 (Patent Document 1) and the like, a battery may be mounted on the rear side of a vehicle compartment in order to narrow the engine room. is there. In this case, the path length of the direct circuit that connects the positive terminal of the battery disposed in the rear of the vehicle and the input terminal such as a starter disposed in the engine room in front of the vehicle becomes long, and a protection function has to be provided. .
これに対して、バッテリのプラス端子に直接接続された遮断器によって回路を保護する場合、バッテリのプラス端子の回りは、スペースが十分に確保できない可能性や、バッテリへの直下回路の組み付け作業性の悪化が避けられないという問題も内在していた。
On the other hand, when the circuit is protected by a circuit breaker connected directly to the battery's positive terminal, there may be insufficient space around the battery's positive terminal, and workability of assembling the circuit directly under the battery There was also an inherent problem that the deterioration of unavoidable.
本発明は上述の事情を背景に為されたものであって、その解決課題は、バッテリのプラス端子周りに特別なスペースを必要とすることなく、かつバッテリへの直下回路の組み付け作業性の悪化を伴わずに、バッテリ直下回路用の遮断機を追加することができる、新規なバッテリ直下回路の保護構造を提供することにある。
The present invention has been made in the background of the above-mentioned circumstances, and the problem to be solved is that a special space is not required around the positive terminal of the battery, and the workability of assembling the circuit directly under the battery is deteriorated. It is an object of the present invention to provide a novel protection structure for a battery direct circuit that can add a circuit breaker for the battery direct circuit.
バッテリ直下回路の保護構造に関する本発明の第一の態様は、車両に搭載されたバッテリのプラス端子に直接接続された車載機器に至る直下回路を保護する、バッテリ直下回路の保護構造であって、前記バッテリのマイナス端子が、遮断器を備えたアース回路を介して、前記車両のボデーに接続されている一方、前記遮断器が前記直下回路を保護するように設定されていることを特徴とする。
The first aspect of the present invention relating to the protection structure for the battery direct circuit is a protection structure for the battery direct circuit that protects the direct circuit reaching the in-vehicle device directly connected to the positive terminal of the battery mounted on the vehicle, The negative terminal of the battery is connected to the body of the vehicle through an earth circuit having a circuit breaker, while the circuit breaker is set to protect the circuit immediately below. .
本態様によれば、バッテリのマイナス端子が車両ボデーに遮断器を備えたアース回路を介して接続されていると共に、遮断器が、バッテリのプラス端子に直接接続された車載機器に至る直下回路を保護するように設定されている。それゆえ、バッテリの直下回路に過電流が流れた際には、車載機器のアース電線からボデーおよびアース回路を介してバッテリのマイナス端子に戻る閉回路において、確実に遮断器が遮断され、バッテリの直下回路の保護を安定して実現することができる。しかもアース回路の遮断器は直下回路を保護するように設定されているため、保護が不要な際の遮断器の遮断も確実に防止することができる。
According to this aspect, the negative terminal of the battery is connected to the vehicle body via the ground circuit having the circuit breaker, and the circuit breaker is connected to the vehicle-mounted device directly connected to the battery positive terminal. It is set to protect. Therefore, when an overcurrent flows in the circuit directly under the battery, the circuit breaker is reliably interrupted in the closed circuit that returns from the ground wire of the in-vehicle device to the negative terminal of the battery through the body and the ground circuit. The protection of the direct circuit can be realized stably. In addition, since the circuit breaker of the earth circuit is set to protect the circuit immediately below, it is possible to reliably prevent the circuit breaker from being interrupted when protection is unnecessary.
加えて、バッテリの直下回路の保護に必要な遮断器が、バッテリのマイナス端子とボデーを接続するアース回路に設けられていることから、空きスペースのないバッテリのプラス端子周りに特別なスペースを必要とすることなく、遮断器を設けることが可能となり、バッテリのプラス端子に対する複数の直下回路の組み付け作業性の悪化を伴うことが有利に回避されている。
In addition, since the circuit breaker necessary for protecting the circuit directly under the battery is provided in the ground circuit that connects the negative terminal of the battery and the body, a special space is required around the positive terminal of the battery with no free space. Therefore, it is possible to provide a circuit breaker, and it is advantageously avoided that the workability of assembling a plurality of direct circuits to the positive terminal of the battery is deteriorated.
このように、本態様のバッテリ直下回路の保護構造によれば、バッテリ直下回路を保護する遮断器の追加を、スペース効率や組み付け作業性の向上を図りつつ、実現させることができるのである。しかも、バッテリのマイナス端子を広いボデーから選択される任意の箇所に接続すればよく、アース回路の経路は比較的短く設定できることから、アース回路自体の配索自由度や良好な組み付け作業性も両立して得ることができる。
Thus, according to the protection structure for a battery direct circuit according to this aspect, the addition of a circuit breaker for protecting the battery direct circuit can be realized while improving space efficiency and assembly workability. Moreover, it is only necessary to connect the negative terminal of the battery to an arbitrary location selected from a wide body, and since the path of the ground circuit can be set relatively short, the ground circuit itself can be routed freely and has good assembly workability. Can be obtained.
バッテリ直下回路の保護構造に関する本発明の第二の態様は、前記第一の態様に記載のバッテリ直下回路の保護構造において、前記バッテリが前記車両の車室内に配設されている一方、前記車載機器に至る前記直下回路が、前記車両のエンジンルームに配設されているスタータに至るスタータ回路を含む電源回路であるものである。
According to a second aspect of the present invention relating to a protection structure for a battery direct circuit, in the battery direct circuit protection structure according to the first aspect, the battery is disposed in a vehicle interior of the vehicle, while the vehicle is mounted on the vehicle. The direct circuit leading to the device is a power supply circuit including a starter circuit reaching a starter disposed in the engine room of the vehicle.
本態様によれば、バッテリが車両の車室内に配設されていると共に、車載機器がエンジンルームに配設されたスタータ及び電気接続箱であって、直下回路がバッテリのプラス端子からスタータ及び電気接続箱に至るスタータ回路を含む電源回路である。そうすると、スタータ回路に保護構造を持たせることが必要不可欠となる。この場合、本態様のバッテリ直下回路の保護構造を採用すれば、スペース効率良くかつ良好な作業性をもってスタータ回路を保護するための遮断器を備えたアース回路を設定することができるのである。
According to this aspect, the battery is disposed in the vehicle interior of the vehicle, and the in-vehicle device is the starter and the electrical junction box disposed in the engine room, and the direct circuit is connected to the starter and the electrical from the positive terminal of the battery. It is a power supply circuit including a starter circuit leading to a connection box. In this case, it is essential to provide the starter circuit with a protective structure. In this case, if the protection structure for the battery direct circuit according to this aspect is employed, it is possible to set an earth circuit including a circuit breaker for protecting the starter circuit with good space efficiency and good workability.
バッテリ直下回路の保護構造に関する本発明の第三の態様は、前記第一または第二の態様に記載のバッテリ直下回路の保護構造において、前記遮断器が、溶断部を介して接続された一対の端子部を備えており、前記一対の端子部の一方が前記ボデーに接続されている一方、前記一対の端子部の他方が前記バッテリの前記マイナス端子にアース電線を介して接続されることによって、前記アース回路が構築されているものである。
A third aspect of the present invention relating to a protection structure for a battery direct circuit is a pair of battery protection circuits according to the first or second aspect, wherein the breaker is connected via a fusing part. A terminal portion, wherein one of the pair of terminal portions is connected to the body, while the other of the pair of terminal portions is connected to the negative terminal of the battery via a ground wire, The ground circuit is constructed.
本態様によれば、遮断器が溶断部を介して接続された一対の端子部を備えていることから、端子部の一方をボルト締結等により容易かつ確実にボデーにアース接続することができる。また、バッテリのマイナス端子に接続されたアース電線を介して、端子部の他方をバッテリのマイナス端子に容易かつ確実に接続することができ、アース回路の構築や追加を良好な作業性をもって行うことができる。
According to this aspect, since the circuit breaker includes the pair of terminal portions connected via the fusing portion, one of the terminal portions can be easily and surely connected to the body by bolt fastening or the like. In addition, the other end of the terminal can be easily and reliably connected to the negative terminal of the battery via the ground wire connected to the negative terminal of the battery, and the construction and addition of the ground circuit should be performed with good workability. Can do.
本発明によれば、バッテリのマイナス端子を、遮断器を備えたアース回路を介して、車両のボデーに直接接続し、遮断器を直下回路を保護するように設定するだけの簡単な構造により、車両に搭載されたバッテリのプラス端子に直接接続された車載機器に至る直下回路を保護する、バッテリ直下回路の保護構造を有利に構築することができる。しかも、遮断器はバッテリのマイナス端子に接続されたアース回路に設ければよいことから、空きスペースのないバッテリのプラス端子周りに特別なスペースを必要とすることなく、遮断器を設けることが可能となり、バッテリのプラス端子に対する複数の直下回路の組み付け作業性の悪化を伴うことが有利に回避されている。
According to the present invention, the negative terminal of the battery is directly connected to the vehicle body via an earth circuit having a circuit breaker, and the circuit breaker is simply set to protect the circuit directly below. A protection structure for a battery direct circuit that protects a direct circuit that reaches an in-vehicle device that is directly connected to a positive terminal of a battery mounted on the vehicle can be advantageously constructed. Moreover, since the circuit breaker only needs to be provided in the ground circuit connected to the negative terminal of the battery, it is possible to provide the circuit breaker without requiring any special space around the positive terminal of the battery that has no free space. Thus, it is advantageously avoided that the workability of assembling a plurality of direct circuits with respect to the positive terminal of the battery is deteriorated.
以下、本発明の実施形態について、図面を参照しつつ説明する。
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
図１～２には、本発明の一実施形態に従うバッテリ直下回路の保護構造１０を室内にバッテリ搭載された車両１２に適用した例を示している。図１に示すように、かかるバッテリ直下回路の保護構造１０が搭載された車両１２は、パネル１４を挟んで前方側（図１中、左側）に位置するエンジンルーム１６と後方側（図１中、右側）に位置する車室１８を含んで構成されている。エンジンルーム１６には、エンジン２０とエンジン２０の始動装置であるスタータ２２等が搭載されている。一方、車室１８の後方側には、補機用のバッテリ２４が搭載されている。
FIGS. 1 and 2 show an example in which a protection structure 10 for a circuit directly under a battery according to an embodiment of the present invention is applied to a vehicle 12 mounted with a battery in a room. As shown in FIG. 1, the vehicle 12 on which the protection structure 10 for the circuit directly under the battery is mounted has an engine room 16 positioned on the front side (left side in FIG. 1) and a rear side (in FIG. 1) across the panel 14. , Right side). In the engine room 16, an engine 20 and a starter 22 that is a starting device for the engine 20 are mounted. On the other hand, an auxiliary battery 24 is mounted on the rear side of the passenger compartment 18.
そして、エンジンルーム１６に搭載されたスタータ２２の入力端子２３と、車室１８の後方に搭載されたバッテリ２４のプラス端子２６の間には、電線２８が配索され、かかる電線２８を介して、バッテリ２４のプラス端子２６とスタータ２２の入力端子２３が電気的に接続され、バッテリ２４からスタータ２２への電力の供給が行われるようになっている。このように、本実施形態では、車両１２の車室１８内に配設されたバッテリ２４のプラス端子２６に電線２８を介して車載機器としてのスタータ２２が直接接続されており、バッテリ２４のプラス端子２６と電線２８とスタータ２２の入力端子２３を含んで、バッテリ２４のプラス端子２６に直接接続されたスタータ２２に至る、直下回路としてのスタータ回路３０が構成されているのである。
An electric wire 28 is routed between the input terminal 23 of the starter 22 mounted in the engine room 16 and the positive terminal 26 of the battery 24 mounted on the rear side of the passenger compartment 18. The positive terminal 26 of the battery 24 and the input terminal 23 of the starter 22 are electrically connected to supply power from the battery 24 to the starter 22. As described above, in this embodiment, the starter 22 as the in-vehicle device is directly connected to the plus terminal 26 of the battery 24 disposed in the passenger compartment 18 of the vehicle 12 via the electric wire 28, and the plus of the battery 24 is added. A starter circuit 30 is formed as a direct circuit including the terminal 26, the electric wire 28, and the input terminal 23 of the starter 22, and reaches the starter 22 directly connected to the plus terminal 26 of the battery 24.
なお、スタータ２２のアース端子３２は、ボデー３４に接地接続されている。さらに、バッテリ２４のプラス端子２６からスタータ２２に向かって延出する電線２８には、分岐回路３６が設けられており、分岐回路３６の端末がリレーボックス等の電気接続箱３８の図示しない入力端子に接続されて、ヒューズ４０ａ，４０ｂ，４０ｃや図示しないリレー等を介して、各種車載電装品へ繋がる更なる分岐電線４２ａ，４２ｂ，４２ｃへ分岐されるようになっている。すなわち、本実施形態では、バッテリ２４のプラス端子２６から車載機器であるスタータ２２及び電気接続箱３８に至る直下回路がスタータ回路３０を含む電源回路なのである。
Note that the ground terminal 32 of the starter 22 is grounded to the body 34. Furthermore, a branch circuit 36 is provided on the electric wire 28 extending from the positive terminal 26 of the battery 24 toward the starter 22, and an end of the branch circuit 36 is an input terminal (not shown) of an electrical connection box 38 such as a relay box. And is branched to further branch wires 42a, 42b, 42c connected to various on-vehicle electrical components via fuses 40a, 40b, 40c, relays (not shown), and the like. In other words, in the present embodiment, a circuit directly below the plus terminal 26 of the battery 24 and the starter 22 and the electrical connection box 38 that are on-vehicle devices is a power circuit including the starter circuit 30.
一方、バッテリ２４のマイナス端子４４には、アース電線４６の一端部が接続されており、アース電線４６の他端部が遮断器としてのヒューズ４８を介してボデー３４に接続されている。図２に示すように、ヒューズ４８は、合成樹脂製のケース５０内に収容された溶断部５２を介して接続された一対の端子部５４ａ，５４ｂの一部がケース５０外に突出して設けられた構成とされている。ケース５０の側面（図２中、左側）に突出した一方の端子部５４ａは、ボデー３４に対してボルト５６により締結されて固定されている一方、ケース５０の上面（図２中、上側）に突出した他方の端子部５４ｂは、バッテリ２４のマイナス端子４４に接続されたアース電線４６と接続されており、アース電線４６とボデー３４とそれらの間に接続配置されるヒューズ４８を含んでアース回路６０が構成されている。このような構造のヒューズ４８を用いることにより、一方の端子部５４ａのボデー３４への接続や、他方の端子部５４ｂのアース電線４６への接続を確実かつ安定して実現することができ、良好な作業性をもってアース回路６０の構築や追加が可能となる。
On the other hand, one end of a ground wire 46 is connected to the negative terminal 44 of the battery 24, and the other end of the ground wire 46 is connected to the body 34 via a fuse 48 as a circuit breaker. As shown in FIG. 2, the fuse 48 is provided with a part of a pair of terminal portions 54 a and 54 b connected to each other via a fusing portion 52 accommodated in a case 50 made of synthetic resin so as to protrude from the case 50. It has been configured. One terminal portion 54a projecting to the side surface (left side in FIG. 2) of the case 50 is fastened and fixed to the body 34 by a bolt 56, while on the upper surface (upper side in FIG. 2) of the case 50. The other protruding terminal portion 54b is connected to a ground wire 46 connected to the negative terminal 44 of the battery 24, and includes a ground circuit 46, a body 34, and a fuse 48 connected between them. 60 is configured. By using the fuse 48 having such a structure, the connection of the one terminal portion 54a to the body 34 and the connection of the other terminal portion 54b to the ground wire 46 can be reliably and stably realized. The ground circuit 60 can be constructed or added with good workability.
ここで、遮断器としてのヒューズ４８を直下回路であるスタータ回路３０を含む電源回路を保護するように設定する必要がある。具体的には、スタータ回路３０には、短期的には４００Ａ以上の大電流が流れることが想定されている。それゆえ、ヒューズ４８の容量は、電流値にあわせた４００Ａ以上となるように設定されることが望ましい。
Here, it is necessary to set the fuse 48 as a circuit breaker so as to protect the power supply circuit including the starter circuit 30 which is a direct circuit. Specifically, it is assumed that a large current of 400 A or more flows in the starter circuit 30 in the short term. Therefore, it is desirable that the capacity of the fuse 48 is set to be 400 A or more in accordance with the current value.
次に、上述の如き構成とされた本実施形態のバッテリ直下回路の保護構造１０の作用について説明する。先ず、バッテリ２４の直下回路であるスタータ回路３０に過電流が流れた際には、スタータ２２のアース端子３２からボデー３４およびアース回路６０を介してバッテリ２４のマイナス端子４４に戻る閉回路に過電流が流れる。ここで、アース回路６０のヒューズ４８の容量が、スタータ回路３０を保護する容量に設定されていることから、過電流が流れた際には確実にヒューズ４８の溶断部５２が溶断し、上述の閉回路が遮断される。これにより、スタータ回路３０に過電流が流れた際には、ヒューズ４８の遮断によりスタータ回路３０の火災等の問題が確実に回避されるようになっている。一方、スタータ回路３０に正常値の電流が流れている場合には、ヒューズ４８の遮断は確実に回避される。特に、アース回路６０に設けられたヒューズ４８の容量が、非常に大きな容量に設定されていることから、ボデー３４に接地接続された他の車載機器へ悪影響を及ぼすことが有利に回避されている。
Next, the operation of the protection structure 10 for the battery direct circuit according to the present embodiment having the above-described configuration will be described. First, when an overcurrent flows through the starter circuit 30, which is a circuit immediately below the battery 24, an overcurrent is generated in the closed circuit that returns from the ground terminal 32 of the starter 22 to the negative terminal 44 of the battery 24 through the body 34 and the ground circuit 60. Current flows. Here, since the capacity of the fuse 48 of the earth circuit 60 is set to a capacity for protecting the starter circuit 30, the fusing part 52 of the fuse 48 is surely blown when an overcurrent flows, and the above-mentioned The closed circuit is interrupted. As a result, when an overcurrent flows through the starter circuit 30, problems such as a fire of the starter circuit 30 are surely avoided by cutting off the fuse 48. On the other hand, when a normal current flows through the starter circuit 30, the fuse 48 is surely avoided from being interrupted. In particular, since the capacity of the fuse 48 provided in the ground circuit 60 is set to a very large capacity, adverse effects on other in-vehicle devices connected to the body 34 are advantageously avoided. .
このような構造とされた本実施形態のバッテリ直下回路の保護構造１０によれば、バッテリ２４の直下回路であるスタータ回路３０の保護に必要なヒューズ４８が、バッテリ２４のマイナス端子４４とボデー３４を接続するアース回路６０に設けられている。それゆえ、空きスペースのないバッテリ２４のプラス端子２６周りに特別なスペースを必要とすることなく、ヒューズ４８を設けることが可能となる。これにより、バッテリ２４のプラス端子２６に対して複数の直下回路を組み付ける作業の作業性を悪化させることなく、バッテリ２４の直下回路であるスタータ回路３０を保護するヒューズ４８等の追加を容易に行うことができる。
According to the protection structure 10 of the battery direct circuit of the present embodiment having such a structure, the fuse 48 necessary for protecting the starter circuit 30 that is the direct circuit of the battery 24 is connected to the negative terminal 44 and the body 34 of the battery 24. Are provided in a ground circuit 60 for connecting the two. Therefore, the fuse 48 can be provided without requiring a special space around the positive terminal 26 of the battery 24 having no empty space. Thereby, the fuse 48 and the like that protect the starter circuit 30 that is a circuit directly below the battery 24 are easily added without deteriorating the workability of the work of assembling a plurality of circuits directly below the plus terminal 26 of the battery 24. be able to.
このように、本実施形態によれば、スタータ回路３０を保護するために必要なヒューズの追加を、スペース効率や組み付け作業性の向上を図りつつ、実現させることができるのである。特に、バッテリ２４のマイナス端子４４を接地接続するアース回路６０は、広いボデー３４から選択される任意の箇所に接続すればよいことから、アース回路６０の経路長を比較的短く設定できる。その結果、アース回路６０自体の配索自由度や良好な組み付け作業性も両立して得ることができる。
As described above, according to the present embodiment, the addition of a fuse necessary for protecting the starter circuit 30 can be realized while improving space efficiency and assembly workability. In particular, since the earth circuit 60 that connects the negative terminal 44 of the battery 24 to the ground may be connected to any location selected from the wide body 34, the path length of the earth circuit 60 can be set relatively short. As a result, it is possible to obtain both the degree of freedom of wiring of the ground circuit 60 itself and good assembly workability.
特に、本実施形態では、バッテリ２４が車室１８内に配設されていると共に、スタータ２２がエンジンルーム１６に配設されており、両者間を接続するスタータ回路３０の経路長が長くなり、スタータ回路３０に保護構造を持たせることが必要不可欠となる。このような要請に対して、本実施形態のバッテリ直下回路の保護構造１０を採用すれば、スタータ回路３０を保護する容量のヒューズを有するアース回路６０を介してバッテリ２４のマイナス端子４４をボデー３４に接地接続させる簡単な構造により、スペース効率良くかつ良好な作業性をもってスタータ回路３０を保護するための保護構造を構築することができる。
In particular, in the present embodiment, the battery 24 is disposed in the passenger compartment 18 and the starter 22 is disposed in the engine room 16, and the path length of the starter circuit 30 that connects the two is increased. It is essential to provide the starter circuit 30 with a protective structure. In response to such a request, if the protection structure 10 for the battery direct circuit according to the present embodiment is employed, the negative terminal 44 of the battery 24 is connected to the body 34 via the earth circuit 60 having a fuse having a capacity for protecting the starter circuit 30. A protective structure for protecting the starter circuit 30 with good space efficiency and good workability can be constructed by a simple structure that is connected to the ground.
以上、本発明の一実施形態について詳述したが、本発明はこれらの具体的な記載によって限定されない。例えば、上述の実施形態では、バッテリ直下回路としてのスタータ回路３０に対し、本発明のバッテリ直下回路の保護構造１０を適用した例を示したが、バッテリ２４が車室１８内に配設されている場合に限らず、エンジンルーム１６側に配設されている場合にも、同様にバッテリ２４のプラス端子２６に直接接続されたバッテリ直下回路を保護するために採用することが可能である。
As mentioned above, although one Embodiment of this invention was explained in full detail, this invention is not limited by these specific description. For example, in the above-described embodiment, the example in which the protection structure 10 of the battery direct circuit according to the present invention is applied to the starter circuit 30 as the battery direct circuit is shown. However, the battery 24 is disposed in the vehicle interior 18. In the case of being arranged on the engine room 16 side as well, it is possible to similarly employ a circuit directly under the battery directly connected to the plus terminal 26 of the battery 24.
また、アース回路６０に設けられる遮断器は、例示のヒューズ４８に限定されず、バッテリ直下回路を保護するように設定すべく、バッテリ直下回路に過電流が流れた際に遮断するものであれば、公知の任意の遮断器が採用され得る。特に、本実施形態に従う構造とされたバッテリ直下回路の保護構造１０によれば、空きスペースが限られたバッテリ２４のプラス端子２６周りから離隔して、かつ比較的スペースに余裕のあるバッテリ２４のマイナス端子４４からボデー３４に至る領域の任意の箇所に遮断器を配設できる。それゆえ、比較的大型の火薬を用いて断線を行う火薬型の遮断器を採用して、過電流のジュール熱による溶断部の溶断に基づき遮断するヒューズの場合に比して、より瞬時にアース回路６０の遮断を行うようにしてもよい。
Further, the circuit breaker provided in the ground circuit 60 is not limited to the illustrated fuse 48, and may be any circuit that cuts off when an overcurrent flows through the battery direct circuit so as to protect the battery direct circuit. Any known circuit breaker may be employed. In particular, according to the protection structure 10 for a circuit directly under the battery having a structure according to the present embodiment, the battery 24 that is separated from the periphery of the plus terminal 26 of the battery 24 with a limited free space and has a relatively large space. A circuit breaker can be arranged at any location in the region from the negative terminal 44 to the body 34. Therefore, the explosive type circuit breaker that uses a relatively large explosive to break the wire is used, and the grounding is more instantaneous than in the case of a fuse that cuts off based on the fusing of the fusing part due to overcurrent Joule heat. The circuit 60 may be shut off.
１０：バッテリ直下回路の保護構造、１２：車両、１６：エンジンルーム、１８：車室、２２：スタータ（車載機器）、２４：バッテリ、２６：プラス端子、３０：スタータ回路（直下回路）、３４：ボデー、４４：マイナス端子、４６：アース電線、４８：ヒューズ（遮断器）、５２：溶断部、５４ａ，ｂ：一対の端子部、６０：アース回路
10: Protection structure for battery direct circuit, 12: vehicle, 16: engine room, 18: vehicle compartment, 22: starter (on-vehicle equipment), 24: battery, 26: positive terminal, 30: starter circuit (direct circuit), 34 : Body, 44: Negative terminal, 46: Ground wire, 48: Fuse (breaker), 52: Fusing part, 54a, b: A pair of terminal parts, 60: Earth circuit
Claims (3)
- 車両に搭載されたバッテリのプラス端子に直接接続された車載機器に至る直下回路を保護する、バッテリ直下回路の保護構造であって、
前記バッテリのマイナス端子が、遮断器を備えたアース回路を介して、前記車両のボデーに接続されている一方、前記遮断器が前記直下回路を保護するように設定されている
ことを特徴とするバッテリ直下回路の保護構造。 A protection structure for a battery direct circuit that protects a direct circuit that reaches an in-vehicle device directly connected to the positive terminal of the battery mounted on the vehicle,
The negative terminal of the battery is connected to the body of the vehicle through an earth circuit having a circuit breaker, while the circuit breaker is set to protect the circuit immediately below. Protection structure for the battery direct circuit. - 前記バッテリが前記車両の車室内に配設されている一方、前記車載機器に至る前記直下回路が、前記車両のエンジンルームに配設されているスタータに至るスタータ回路を含む電源回路である請求項１に記載のバッテリ直下回路の保護構造。 The power supply circuit includes a starter circuit that reaches a starter that is disposed in an engine room of the vehicle, while the battery is disposed in a vehicle interior of the vehicle, and the circuit immediately below the vehicle-mounted device. The protection structure of the battery direct circuit according to 1.
- 前記遮断器が、溶断部を介して接続された一対の端子部を備えており、前記一対の端子部の一方が前記ボデーに接続されている一方、前記一対の端子部の他方が前記バッテリの前記マイナス端子にアース電線を介して接続されることによって、前記アース回路が構築されている請求項１または２に記載のバッテリ直下回路の保護構造。 The circuit breaker includes a pair of terminal portions connected via a fusing portion, and one of the pair of terminal portions is connected to the body, while the other of the pair of terminal portions is the battery. The protection structure for a battery direct circuit according to claim 1 or 2, wherein the ground circuit is constructed by being connected to the negative terminal via a ground wire.
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| JP2016062786A JP2017171257A (en) | 2016-03-25 | 2016-03-25 | Protection structure of circuit directly below battery |
| JP2016-062786 | 2016-03-25 |
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| WO2017163833A1 true WO2017163833A1 (en) | 2017-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
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|---|---|---|---|---|
| JPH08280133A (en) * | 1995-04-10 | 1996-10-22 | Sumitomo Wiring Syst Ltd | Electric power supply device for wire harness for automobile |
| JPH0974670A (en) * | 1995-09-01 | 1997-03-18 | Sumitomo Wiring Syst Ltd | Power supply device for automobile |
| JPH09136586A (en) * | 1995-11-14 | 1997-05-27 | Minamikiyuushiyuu Noki Hanbai Kk | Vehicular power supply unit |
| JPH11278175A (en) * | 1998-03-30 | 1999-10-12 | Harness Syst Tech Res Ltd | Conducting wire protective device for vehicle |
| JP2011016391A (en) * | 2009-07-07 | 2011-01-27 | Toyota Motor Corp | Circuit breaker |
| JP2015091199A (en) * | 2013-11-06 | 2015-05-11 | トヨタ自動車株式会社 | Fuse system |
| JP2016032388A (en) * | 2014-07-30 | 2016-03-07 | 矢崎総業株式会社 | Wiring harness |
-
2016
- 2016-03-25 JP JP2016062786A patent/JP2017171257A/en active Pending
-
2017
- 2017-03-06 WO PCT/JP2017/008703 patent/WO2017163833A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08280133A (en) * | 1995-04-10 | 1996-10-22 | Sumitomo Wiring Syst Ltd | Electric power supply device for wire harness for automobile |
| JPH0974670A (en) * | 1995-09-01 | 1997-03-18 | Sumitomo Wiring Syst Ltd | Power supply device for automobile |
| JPH09136586A (en) * | 1995-11-14 | 1997-05-27 | Minamikiyuushiyuu Noki Hanbai Kk | Vehicular power supply unit |
| JPH11278175A (en) * | 1998-03-30 | 1999-10-12 | Harness Syst Tech Res Ltd | Conducting wire protective device for vehicle |
| JP2011016391A (en) * | 2009-07-07 | 2011-01-27 | Toyota Motor Corp | Circuit breaker |
| JP2015091199A (en) * | 2013-11-06 | 2015-05-11 | トヨタ自動車株式会社 | Fuse system |
| JP2016032388A (en) * | 2014-07-30 | 2016-03-07 | 矢崎総業株式会社 | Wiring harness |
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