JP3204326B2 - Starting device for vehicles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle starting device for driving an engine starting mechanism using a vehicle-mounted battery as a power source.

[0002]

2. Description of the Related Art Conventionally, a vehicle is provided with a battery as a power supply for an engine starter and other auxiliary equipment. When the engine is started, a large current of, for example, about 100 to 200 A is supplied from the battery to the starter to start the engine. Has been done.

When the charged amount of the battery is reduced, a large current cannot be supplied and the engine cannot be started. Therefore, a capacitor having a large capacitance is first charged, and the electric charge of the capacitor is supplied to a starter. The power supply device is disclosed in
No. 75350.

[0004] In addition, in cold weather, a warm-up time is required until the vehicle starts even after the engine is started. Therefore, a vehicle start setting device that operates a relay switch by a timer circuit is disclosed in Japanese Patent Application Laid-Open No. 63-55363.

[0005]

According to the former proposal shown in the above-mentioned publication, if the charge of the capacitor is always used regardless of the charge amount of the battery, the charge amount of the battery becomes almost zero. The engine is not noticed until it becomes impossible to charge the capacitor, and the engine may not be completely started.

[0006] The latter proposal is for the case of cold weather, and when the temperature of the battery or the engine drops, even if the relay switch is actuated by the timer due to the decrease in the capacity of the battery or the poor startability of the engine, the engine is not used. Difficulty in starting occurs.

[0007] The present invention has been made in view of such problems, and its object is to check the status of the battery as well as use of the capacitor having a large capacitance, Rutotomoni to start the engine, the driver Reduce the amount of battery charge
It is to provide a vehicle starting device that can have a warning.

[0008]

According to the present invention, there is provided a vehicle starter for supplying power from a battery to a starter and rotating and starting an engine engaged with the starter. in the device, a large-capacity capacitor charging is connected to the battery is performed, a starting detection means for detecting an engine start state, the large-capacity capacitor in response to a signal from the start detecting means of the when energized from the battery to the starter automatically storing charge, and a power supply means for supplying a charge of that the starter and the
The power supply means, when supplying the electric charge of the large capacity capacitor,
A vehicle starting device that issues a warning of a decrease in battery charge is provided.

[0009]

In the present invention, the charge of the capacitor is not always used at the time of starting the engine. The start of the engine is checked, and when the engine cannot be started with the battery alone, the capacitor is used together, and a warning of a decrease in the charged amount of the battery is issued. Inability to start due to complete rising of the battery can be prevented.

[0010]

Next, an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing a configuration of an embodiment of a vehicle starting device according to the present invention.

In FIG. 1, reference numeral 1 denotes a battery, which serves as a power source for an ignition circuit 2 and a starter 3 of the engine. When a driver turns on a key switch A, the ignition circuit and the radio are energized. Is turned on, the relay R1 is closed by the operation of the current through the resistor R connected to the coil RC of the relay R1, so that the starter 3 is driven to start the engine.

Reference numeral 4 denotes a capacitor having a large electrostatic capacity, which is composed of, for example, an electric double layer capacitor. If the amount of charge stored in the battery 1 is reduced and it is difficult to start the engine only by energizing from the battery 1, the relay R3 is turned on. Capacitor 4
Is charged, and when a predetermined charge amount is reached, the starter 3 is energized by the electric charge of the capacitor 4 to start the engine. Reference numeral 41 denotes a capacitor charge sensor which is configured to detect a terminal voltage of the capacitor 4 and send a signal to the engine rotation check circuit 5 when the voltage reaches a predetermined voltage.

The engine rotation check circuit 5 responds to the signal from the capacitor charge sensor 41 by a relay R
2, a signal is sent to the R3, the rising battery display circuit 11 and the like to control ON / OFF of the circuit and display. The dead battery display circuit 11 is provided at a place where the driver can constantly monitor and gives a warning about the state of the battery 1, and is returned by a reset signal.

FIG. 2 is a processing flowchart for explaining the operation of the embodiment shown in FIG. 1, and the operation of this embodiment will be described with reference to FIG.

First, it is checked in step 1 whether or not the key switch A has been operated.
In step 3, the ignition circuit 2 is energized, and in step 3, if the next-stage key switch B is on, the circuit of the starter 3 is closed, and the process proceeds from step 4 to 5 to determine the rotation of the engine.

Here, if the engine is rotating, the flow ends. If the engine is not rotating, the process proceeds to step 6, and
It is determined whether or not a charge signal from the capacitor charge sensor 41 has been input to the rotation check circuit 5. If there is no input of the charging signal, the process proceeds from step 7 to turn on the relay R2, short-circuit the relay coil RC, open the relay R1, and cut off the power supply to the starter 3.
Then, in step 8, the relay R3 is closed, and the electric power from the battery 1 with the reduced storage amount is led to the capacitor 4 to be charged. In step 9, the command to the dead battery display circuit 11 is issued to notify the driver of the reduction in the storage amount. Warning.

In the next step 10, the signal of the charge sensor 41 is checked. If the charge is completed, a charge completion signal is issued in step 12 and the process returns to step 6. In this case, since the electric charge of the capacitor 4 is sufficient to start the starter, the process proceeds to step 11, in which the relay R2 is turned off to close the contact of the relay R1, and the electric charge of the capacitor 4 is transferred to the relay R
The starter 3 is supplied and driven via the R3 and R1 to start the engine.

FIG. 3 is a block diagram showing the configuration of another embodiment of the present invention, in which the same parts as those of the above-described embodiment are denoted by the same reference numerals.

In the figure, reference numeral 6 denotes a timer circuit which starts operation at a preset time and sends a start command to the relays Ra, Rb and the rotation check circuit 5 to start the engine.

Therefore, even if the manual key switches 1 and 2 are not operated at the set time, the relays Ra and Rb are closed by the timer circuit 6 to energize the ignition circuit 2 and the starter 3 and the rotation check circuit 5 is operated by the engine. Check the rotation status of. If the engine is running, the relay Rb is turned off by the coincidence signal, and the engine start is completed. However, when starting cannot be performed due to a decrease in the amount of stored power in the battery 1, an OFF signal is output from the rotation check circuit that checks this to the relay Rb to stop energizing the starter 3, and the relay RC is turned on to turn on the battery. 1 and the capacitor 4 are connected, and charging of the capacitor 4 is started. In this case, the dead battery display circuit 11 displays a warning.

When the charging of the capacitor 4 is completed,
A restart command is issued from the charge sensor 41 to the timer circuit 6, and the energizing circuit is formed as described above, and the electric charge from the capacitor 4 is supplied to start the engine.

Although the present invention has been described with reference to the above-described embodiment, various modifications can be made within the scope of the present invention, and these modifications are not excluded from the scope of the present invention.

[0024]

According to the present invention as in the above embodiment,
When starting the engine, the charge of the charged capacitor is not applied to the starter together with the battery,
When the charged amount of the battery is reduced and the engine cannot be started with the battery alone, the charge of the capacitor is used and the rising battery is displayed, so that the driver can grasp the state of the battery and the engine cannot be started completely. This has the effect of avoiding an unusual state.

Further, according to the present invention, the automatic start using the timer device operates in the same manner as the manual start, so that there is an advantage that the start failure due to the dead battery can be prevented.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of a vehicle starting device according to the present invention.

FIG. 2 is a processing flowchart showing the operation of the embodiment.

FIG. 3 is a configuration block diagram showing another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Battery 3 ... Starter 4 ... Condenser 5 ... Engine rotation check circuit 6 ... Timer circuit 11 ... Battery rising display circuit

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Satoshi Tozawa Isawa Motors, Fujisawa City, Kanagawa Prefecture 8 Isuzu Motors Co., Ltd. Fujisawa Plant (72) Inventor Tomonori Ogasawara 8 Isuzu Motors, Fujisawa City, Kanagawa Prefecture Isuzu Motors Limited Inside the Fujisawa Plant (72) Keiichi Iida, Inventor No.8, Tsuchiya, Fujisawa-shi, Kanagawa Isuzu Motors Corporation Inside the Fujisawa Plant (56) References JP-A-2-175351 (JP, A) JP, U) Japanese Utility Model 58-156054 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B60R 16/02 B60R 16/04

Claims (3)

(57) [Claims] 1. A starting device for a vehicle, in which electric power from a battery is supplied to a starter and an engine engaged with the starter is rotated to start the engine, a large-capacity capacitor connected to the battery and charged. Start detection means for detecting an engine start state; and power supply means for automatically accumulating electric charge in a large-capacity capacitor according to a signal from the start detection means when a battery is energized to a starter, and supplying the electric charge to the starter. And the power
The supply means is used to supply
A starting device for a vehicle, which issues a warning of a decrease in battery charge . 2. The power supply means is provided by a timer device.
2. The vehicle starting device according to claim 1, wherein the starting device operates when power is supplied from a battery . 3. An electric double layer capacitor as the large capacity capacitor.
The vehicle starting system according to claim 1, wherein the employing the capacitor.