JP4447571B2 - Jump start device - Google Patents

Description

  The present invention relates to a jump start device that starts an engine by supplying electric power to an electric load of a vehicle including a starter that starts the engine from an external power source connected to an in-vehicle battery, for example.

Conventionally, it is determined whether or not the jump start has been made based on the battery voltage, the charging current, the engine start time, etc., and when it is determined that the jump start has been made, the jump start for cutting off the power supply to the unnecessary power load A determination apparatus is known (see, for example, Patent Document 1).
JP 2001-107768 A

  However, in the above conventional jump start determination device, it is necessary to detect the battery voltage, the charging current, the engine start time, and the like, so that the configuration may be complicated.

  The present invention has been made to solve the above-described problems, and has as its main object to accurately determine a jump start with a simple configuration and suppress the power consumption of the vehicle.

In order to achieve the above object, one embodiment of the present invention provides:
Power is supplied to an electric load of a vehicle including a starter that starts the engine from an external power source connected to the on-vehicle battery, and the engine is started.
The battery terminal to which the external power supply is connected is a jump start device provided with a terminal cover that can be attached and removed to cover the terminal,
Switching means for switching between a supply state in which power is supplied to a predetermined electric load and a cut-off state in which power is not supplied to the predetermined power load;
The switching means is a jump start device that is in the supply state when the terminal cover is in an attached state and in the shut-off state when the terminal cover is in a detached state.

  According to this aspect, since it is possible to determine whether or not the jump start is based on the attachment state and the removal state of the terminal cover, the jump start can be accurately determined with a simple configuration. Moreover, since it is possible to suppress power supply to a predetermined electric load when it is determined that it is a jump start, the power consumption of the vehicle can be suppressed. That is, the jump start can be accurately determined with a simple configuration, and the power consumption of the vehicle can be suppressed.

In this one aspect, an open / close switch that is built in the terminal cover and interlocks with the attachment and removal,
A relay circuit that is provided between the in-vehicle battery and the predetermined electric load, and permits or prohibits power supply to the predetermined electric load according to an on state or an off state of the open / close switch; May be further provided. Thereby, the attachment state and removal state of the terminal cover can be detected, and the jump start can be determined easily and accurately. Further, at the time of jump start, power supply to a predetermined electric load can be prohibited, and the power consumption of the vehicle can be suppressed.

In this one aspect, when the terminal cover is in the attached state and the open / close switch is turned on, the relay circuit permits power supply to the predetermined electric load,
When the terminal cover is in the removed state and the open / close switch is in the off state, the relay circuit may prohibit power supply to the predetermined electric load. Thereby, when the terminal cover is in the detached state, it is possible to prohibit power supply to a predetermined electric load and to suppress the power consumption of the vehicle.

  In this aspect, after the terminal cover is in the removed state, the switching means may maintain the shut-off state even when the terminal cover is returned to the attached state. Thereby, even after the jump start, the power supply to the predetermined electric load is surely cut off.

In this one aspect, a fuse is disposed between the predetermined power load and the in-vehicle battery,
When the terminal cover is in the removed state, a current is supplied to the fuse and the fuse may be cut off. Thereby, after a terminal cover will be in the removal state by simple structure, the interruption | blocking state of a switching means is maintained.

  In this aspect, the predetermined electrical load may be an electrical load that is unnecessary for vehicle travel. Thereby, at the time of a jump start, the electric power supply with respect to the electric load unnecessary for vehicle travel can be suppressed, and the electric power consumption of a vehicle can be suppressed efficiently.

In this one aspect, the terminal cover is fixed to the terminal so as to be openable and closable,
The open / close switch includes a first contact disposed on a fixed side of the terminal cover,
A second contact that is provided on the terminal cover and moves relative to the first contact by interlocking with the opening and closing of the terminal cover;
The first contact and the second contact may come into contact with each other to be in the on state.

  For example, the opening of the terminal cover refers to removal of the terminal cover, and the closing of the terminal cover refers to attachment of the terminal cover.

  According to the present invention, a jump start can be accurately determined with a simple configuration, and the power consumption of the vehicle can be suppressed.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a block diagram showing a system configuration of a jump start apparatus according to an embodiment of the present invention. The jump start device 1 according to this embodiment includes, for example, an in-vehicle battery 2 that is housed in an engine room, a trunk room, or the like of a vehicle and supplies electric power to a power load of the vehicle.

  The in-vehicle battery 2 is, for example, a rechargeable 12V or 24V lead battery. The in-vehicle battery 2 has a positive terminal (plus terminal) 2 a and a negative terminal (minus terminal), and the negative terminal is connected to the ground (GND) of the vehicle via the wiring 3.

  An electric load 4 necessary for vehicle travel is connected to the positive electrode terminal 2 a of the in-vehicle battery 2 via a wiring 3.

  For example, the electric load 4 necessary for traveling the vehicle includes an electric starter motor that starts the engine, an engine (including an engine ECU) that adds driving force of the vehicle, and a power steering device (steering ECU is installed) that steers the vehicle. Various devices necessary for vehicle travel, such as a brake device (including a brake ECU) for applying braking force to the vehicle.

  A predetermined electrical load 6 that is not required when the vehicle travels is connected to the positive terminal 2 a of the in-vehicle battery 2 via the wiring 3 and the relay circuit 5. The predetermined electrical load 6 includes, for example, an air conditioner (including a blower device and an air conditioner) that performs air conditioning in the passenger compartment, a seat heater device that warms the seat of the vehicle, a seat adjustment device that adjusts the position of the seat, Any on-vehicle device such as a mirror heater device for heating a mirror, a wiper device, an audio device, a navigation device or the like is included.

  The relay circuit 5 is configured by, for example, an electromagnetic relay having a relay coil 5a and a relay contact 5b.

  The relay contact 5b is held in an open state (off state) when the relay coil 5a is in a non-excited state (non-energized state). On the other hand, the relay contact 5b is held in a closed state (on state) when the relay coil 5a is in an excited state (energized state). Therefore, when the relay coil 5 a is energized and the relay contact 5 b is kept closed, power is supplied from the in-vehicle battery 2 to the predetermined electric load via the wiring 3.

  An open / close switch 7 is connected via a wire 3 between the relay coil 5 a of the relay circuit 5 and the positive terminal 2 a of the in-vehicle battery 2. The open / close switch 7 is a switch that switches between an on state (closed state) and an off state (open state).

  Further, the open / close switch 7 has a rotation switch portion 7a to which the wiring 3 on the positive electrode terminal 2a side is connected and is rotatable, and a contact portion 7b to which the wiring 3 on the relay coil 5a side is connected. A conductive portion 7c having a predetermined area (for example, a fan shape) is formed in the rotary switch portion 7a, and the wiring 3 on the positive electrode terminal 2a side is connected to the conductive portion 7c.

  That is, when the rotation switch portion 7a rotates and reaches a predetermined position, the conductive portion 7c and the contact portion 7b of the rotation switch portion 7a come into contact with each other, and the open / close switch 7 is turned on.

  When the open / close switch 7 is turned on, the relay coil 5a is energized. In this case, the relay contact 5 b is closed, and power is supplied from the in-vehicle battery 2 to the predetermined electric load 6. On the other hand, when the open / close switch 7 is turned off, the relay coil 5a is turned off. In this case, the relay contact 5 b is in an open state, and power is not supplied from the in-vehicle battery 2 to the predetermined electric load 6.

  The positive terminal 2a of the in-vehicle battery 2 is provided with a terminal cover 8 that prevents a short circuit by being insulated from a nearby vehicle member (FIG. 2A). The terminal cover 8 is disposed so as to cover the connection portion between the positive terminal 2 a and the end 3 a of the wiring 3. Further, the terminal cover 8 is attached to the end 3a of the wiring 3 so as to be swingable by a shaft member 3b such as a pin so that the terminal cover 8 can be attached and detached.

  When the terminal cover 8 is in the attached state, the positive terminal 2a of the in-vehicle battery 2 is covered with the terminal cover 8, and cannot be contacted with the positive terminal 2a from the outside. In this case, for example, the booster cable 9 cannot be connected to the positive electrode terminal 2 a of the in-vehicle battery 2.

  On the other hand, when the terminal cover 8 is in the detached state, the positive terminal 2a of the in-vehicle battery 2 is not covered by the terminal cover 8, so that it can come into contact with the positive terminal 2a from the outside (FIG. 3 (a)). . In this case, the booster cable 9 can be connected to the positive terminal 2a of the in-vehicle battery 2. By being configured as described above, for example, when the booster cable 9 is connected to the positive electrode terminal 2a of the in-vehicle battery 2, the user inevitably puts the terminal cover 8 in a detached state.

  The terminal cover 8 has a built-in open / close switch 7. A rotation switch portion 7 a of the open / close switch 7 is connected to the shaft member 3 b of the terminal cover 8. Accordingly, in conjunction with the swing of the terminal cover 8, the conductive portion 7c of the rotary switch portion 7a of the open / close switch 7 rotates.

  Further, when the terminal cover 8 is in the mounted state (FIG. 2A), the conductive portion 7c of the rotary switch portion 7a of the open / close switch 7 and the contact portion 7b are in contact with each other, and the open / close switch 7 is turned on. It is comprised so that it may be in a state (FIG.2 (b)). In this case, as described above, the relay coil 5a of the relay circuit 5 is energized and the relay contact 5b is closed. Therefore, electric power is supplied to the predetermined electric load 6 from the in-vehicle battery 2 and an external power source 10 described later.

  On the other hand, when the terminal cover 8 is in the removed state (FIG. 3A), the conductive portion 7c of the rotary switch portion 7a of the open / close switch 7 and the contact portion 7b are in a non-contact state, and the open / close switch 7 is It is comprised so that it may be in an OFF state (FIG.3 (b)). In this case, as described above, the relay coil 5a of the relay circuit 5 is not energized, and the relay contact 7b is opened. Therefore, power is not supplied to the predetermined electrical load 6 from the in-vehicle battery 2 and the external power source 10 described later. In this way, the mounting positions of the conductive portion 7c and the contact portion 7b of the rotary switch portion 7a of the open / close switch 7 are adjusted.

  Note that, as described above, for example, when the booster cable 9 is connected to the positive terminal 2a of the in-vehicle battery 2, the terminal cover 8 is inevitably removed. Therefore, the open / close switch 7 is turned off, and power is not supplied to the predetermined electric load 6 from the in-vehicle battery 2 and the external power source 10 described later.

  By the way, for example, the performance of the in-vehicle battery 2 may be deteriorated due to aging, overdischarge, or the like, and the charge amount of the in-vehicle battery 2 may be insufficient. In this case, electric power supplied to the starter motor (electric load) 4 may be insufficient, and the engine may not be started. Therefore, the external power source 10 is connected to the in-vehicle battery 2 in parallel via the booster cable 9 (FIGS. 1 and 4), and by supplying power from the external power source 10 to the starter motor 4, A so-called jump start may be performed to start the engine.

  At this time, if power supply to the predetermined electrical load 6 that is not necessary for vehicle travel is interrupted while maintaining power supply to the electrical load 4 required for vehicle travel, the necessary power supply is secured. The power consumption of the vehicle can be efficiently suppressed.

  Therefore, in the jump start device 1 according to the present embodiment, when the jump start booster cable 9 is connected to the positive electrode terminal 2a of the in-vehicle battery 2, the terminal cover 8 is inevitably in a detached state and interlocked. The open / close switch 7 changes from the on state to the off state. Thereby, it is determined simply and accurately that the jump start is performed, and power supply to the electric load 4 necessary for vehicle travel is maintained, while power supply to a predetermined electric load 6 that is not necessary for vehicle travel is performed. Stopped.

  As the external power source 10, for example, another battery or an in-vehicle battery mounted on another vehicle is used.

  Next, a processing flow of the jump start device 1 according to the present embodiment will be described.

  For example, the terminal cover 8 that covers the positive terminal 2a of the in-vehicle battery 2 housed in the engine room is changed from the attached state (FIG. 2A) to the removed state (FIG. 3A). A booster cable 9 connected to the external power supply 10 is connected to the positive terminal 2 a of the in-vehicle battery 2.

  In addition, when the terminal cover 8 is removed, the open / close switch 7 is switched from the ON state (FIG. 2B) to the OFF state (FIG. 3B).

  When the open / close switch 7 is turned off, the relay contact 5b of the relay circuit 5 is opened. Thereby, at the time of jump start, electric power is supplied from the vehicle-mounted battery 2 and the external power supply 10 to the electric load 4 necessary for vehicle travel. On the other hand, power is not supplied to the predetermined electrical load 6 that is not necessary for vehicle travel.

  As described above, in the jump start device 1 according to the present embodiment, when the jump start booster cable 9 is connected to the positive electrode terminal 2a of the in-vehicle battery 2, the terminal cover 8 is inevitably removed and interlocked. The open / close switch 7 changes from the on state to the off state.

  Thereby, it is easily and accurately determined that the jump start is performed. In addition, power supply to the electrical load 4 necessary for vehicle travel is maintained, while power supply to a predetermined electrical load 6 that is not required for vehicle travel is stopped. Therefore, the power consumption of the vehicle can be efficiently suppressed.

  Further, it is possible to accurately determine whether or not the jump start is performed with a simple configuration in which the terminal cover 8 is simply provided with the open / close switch 7 without requiring a special sensor, control processing, or the like. That is, it is possible to accurately determine a jump start with a simple configuration and suppress the power consumption of the vehicle.

  In addition, since it is realizable to show | play the said effect with a simple structure, it leads to a cost reduction.

  As mentioned above, although the best mode for carrying out the present invention has been described using one embodiment, the present invention is not limited to such one embodiment, and within the scope not departing from the gist of the present invention, Various modifications and substitutions can be made to the above-described embodiment.

  For example, in the above-described embodiment, the open / close switch 7 having the rotatable switch part 7a and the contact part 7b is applied, but the terminal cover 8 is turned on in the attached state and turned off in the detached state. Any open / closed switch can be used as long as it is in a state configuration.

  In the above embodiment, the terminal cover 8 attached to the end portion 3a of the wiring 3 so as to be swingable by the shaft member 3b is applied so that the attachment and removal are possible. Arbitrary terminal cover 8 configurations are applicable.

  In the above embodiment, when the terminal cover 8 is in the attached state (FIG. 2A), electric power is supplied from the in-vehicle battery 2 and the external power source 10 to the predetermined electric load 6, and the terminal cover 8 is Any configuration can be applied as long as power is not supplied from the in-vehicle battery 2 and the external power supply 10 to the predetermined electric load 6 when the battery is in the detached state (FIG. 3A).

  In the above embodiment, a fuse 11 may be provided between the open / close switch 7 and the positive terminal 2a of the in-vehicle battery 2 that blows when a predetermined amount of current flows (FIG. 5). In this configuration, the relay circuit 5 may not be provided.

  For example, when the terminal cover 8 is removed from the attached state, the open / close switch 7 is switched from the off state to the on state. At this time, a current of a predetermined amount or more flows through the fuse 11 disposed between the positive electrode terminal 2a and the open / close switch 7, and the fuse 11 is melted. Thus, at the time of jump start, the power to the electric load 4 necessary for vehicle traveling is reliably cut off from the in-vehicle battery 2 and the external power source 10 to the predetermined electric load 6 that is not necessary for vehicle traveling. Supply can be maintained.

  In addition, even after the jump start, the terminal cover 8 is returned from the removed state to the attached state, and even when the open / close switch 7 is turned from the on state to the off state, a predetermined amount is obtained from the in-vehicle battery 2 and the external power source 10 due to the fuse 11 being blown. The interruption of the power supply to the electric load 6 is reliably maintained. Therefore, even when the vehicle travels after the jump start, the power consumption of the vehicle can be reliably suppressed.

  Furthermore, at the time of vehicle maintenance such as replacement of the in-vehicle battery 2, the wiring 3 of the negative terminal of the in-vehicle battery 2 is first removed by a normal procedure. Therefore, after that, even if the terminal cover 8 is removed to remove the wiring 3 of the positive electrode terminal 2a, no current flows through the fuse 11. This reliably prevents the fuse 11 from being accidentally blown during vehicle maintenance.

  Instead of the fuse 11, a breaker switch that turns off when a predetermined amount of current flows and maintains that state may be used.

  In the above embodiment, the contact portion 7b of the open / close switch 7 may be connected to a vehicle control device. Thus, the control device can recognize that the vehicle has been jump-started when it is determined that the open / close switch 7 is in the OFF state. Further, the control device may perform, for example, eco-run control based on the jump start determination.

  INDUSTRIAL APPLICABILITY The present invention can be used for a jump start device that starts a vehicle engine with an external power source. The appearance, weight, size, running performance, etc. of the vehicle to be mounted are not limited.

It is a block diagram which shows the system configuration | structure of the jump start apparatus based on one Example of this invention. (A) It is a figure which shows an example of the attachment state with which the terminal cover was attached to the positive electrode terminal of the vehicle-mounted battery. (B) It is a figure which shows an example of a state when an opening-and-closing type switch will be in an ON state. (A) It is a figure which shows an example of the removal state from which the terminal cover was removed from the positive electrode terminal of the vehicle-mounted battery. (B) It is a figure which shows an example of a state when an open / close type switch will be in an OFF state. It is a figure which shows an example of the state in which the external power supply was connected to the vehicle-mounted battery in an engine room in parallel via the booster cable. It is a figure which shows an example of the structure which arrange | positions a fuse between an open / close switch and the positive electrode terminal of a vehicle-mounted battery.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Jump start apparatus 2 In-vehicle battery 2a Positive electrode terminal 3 Wiring 4 Electric load 6 Predetermined electric load 7 Open / close switch 7b Contact part (1st contact)
7c Conductive part (second contact)
8 Terminal cover 10 External power supply

Claims (7)

Power is supplied to an electric load of a vehicle including a starter that starts the engine from an external power source connected to the on-vehicle battery, and the engine is started.
The battery terminal to which the external power supply is connected is a jump start device provided with a terminal cover that can be attached and removed to cover the terminal,
Switching means for switching between a supply state in which power is supplied to a predetermined electric load and a cut-off state in which power is not supplied to the predetermined power load;
The jump start device characterized in that the switching means is in the supply state when the terminal cover is attached, and is in the shut-off state when the terminal cover is removed. The jump start device according to claim 1,
An open / close switch that is built in the terminal cover and interlocks with the attachment and removal;
A relay circuit that is provided between the in-vehicle battery and the predetermined electric load, and permits or prohibits power supply to the predetermined electric load according to an on state or an off state of the open / close switch; A jump start device further comprising: The jump start device according to claim 2,
When the terminal cover is in the attached state and the open / close switch is turned on, the relay circuit permits power supply to the predetermined electrical load,
The jump start device according to claim 1, wherein when the terminal cover is in the removed state and the open / close switch is turned off, the relay circuit prohibits power supply to the predetermined electric load. The jump start device according to claim 1,
After the terminal cover is in the removed state, the switching means maintains the shut-off state even when the terminal cover is returned to the attached state. The jump start device according to claim 4,
A fuse is disposed between the predetermined power load and the in-vehicle battery,
A jump start device characterized in that when the terminal cover is in the removed state, a current is supplied to the fuse and the fuse is cut. The jump start device according to any one of claims 1 to 5,
The jump start device according to claim 1, wherein the predetermined electrical load is an electrical load that is unnecessary for vehicle travel. The jump start device according to claim 3,
The terminal cover is fixed to the terminal so as to be openable and closable,
The open / close switch includes a first contact disposed on a fixed side of the terminal cover,
A second contact that is provided on the terminal cover and moves relative to the first contact by interlocking with the opening and closing of the terminal cover;
The jump start device characterized in that the first contact and the second contact come into contact with each other to be in the on state.

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