JPH064061Y2 - Automotive power supply - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial field of application) The present invention is, for example, an automobile used to supply a starting device with a changed power supply voltage when starting the engine of the automobile. The present invention relates to a power supply device for use.

(Prior Art) Conventionally, for example, an automotive power supply device of a power supply voltage switching system as described above is known to be used in a large diesel vehicle. This power supply device connects two batteries in series to increase the power supply voltage at the time of starting the engine of a heavy-duty diesel vehicle used particularly in cold regions, and operates the starter or preheater with the power supply with the increased voltage. It was done like this.

FIG. 3 illustrates an example of the above-mentioned power supply voltage switching type automobile power supply device.

That is, the vehicle power supply device shown in the figure has two 12-volt specification batteries 101, 102 and three movable contacts 104, 10 assembled together with one solenoid 103.
5, 106 and fixed contacts 107, 108, 109, 1
And a switching mechanism 111 provided with 10.

Then, by operating the starter switch SW ′ to the start ST side, the solenoid 103 is excited to bring the movable contact 106 into contact with the fixed contact 110 and the movable contact 105 into contact with the fixed contact 109, so that the movable contact 10
4 separates from the fixed contact 107. Therefore, the battery 10
1 and the battery 102 are connected in series via a fixed setting 110 and a movable contact 106, and a voltage of 24 V is supplied to the starter S via a connection between the movable contact 105 and the fixed contact 109.

When the starter switch SW 'is switched from the start ST side to the ignition IG side, the solenoid 1
03 is de-excited and each movable contact 104, 105, 10
6, the movable contact 104 contacts the fixed contact 107, the movable contact 105 separates from the fixed contact 109 and contacts the fixed contact 108, and the movable contact 106 separates from the fixed contact 110. A parallel circuit with 102 is formed so as to supply a voltage of 12 V to another electric circuit (not shown).

(Problems to be Solved by the Invention) However, in the above-described conventional vehicle power supply device, it is possible to let the driver check whether the vehicle power supply device is operating normally or is abnormal. There is no means, and there is a problem that the driver cannot judge the above-mentioned operation confirmation and abnormality detection.

(Object of the Invention) Therefore, the present invention was conceived in order to solve the above-mentioned conventional problems, and provides a power supply device for an automobile capable of displaying to a driver whether an operation, a non-operation, or an abnormality has occurred. The purpose is to do.

[Structure of the Invention] (Means for Solving the Problems) In the structure of the present invention for achieving the above object, one end is grounded and the other end is connected to a load for 12 volts.
A first battery having a 2 volt supply voltage; a second battery having a 12 volt supply voltage; a first contact connected to the other end of the first battery; and one end of the second battery. A first exciter including a connected second contact and a first exciting coil that opens and closes between the first contact and the second contact and closes the first and second contacts when not excited. A switching mechanism, a third contact connected to the other end of the second battery, and a fourth contact connected to the one end of the first battery,
A second switching mechanism including a second exciting coil that opens and closes between the third contact and the fourth contact and closes between the third and fourth contacts when not excited; A fifth contact connected to the other end of the battery, a sixth contact connected to the other end of the second battery, opening and closing between the fifth contact and the sixth contact, and de-excitation A third switching mechanism, which sometimes includes a third exciting coil that opens between the fifth and sixth contacts, and the third exciting coil is delayed from the first exciting coil to be excited, and the third exciting coil is excited. Control mechanism for delaying the first exciting coil from the exciting coil to deactivate the first exciting coil, and between the first contact and the second contact provided in the first switching mechanism, or the second contact. The display means is provided between the third contact and the fourth contact provided in the switching mechanism of It is characterized by a door.

FIG. 1 is a diagram showing a basic configuration of an automobile power supply device according to the present invention. An automobile power supply device 1 shown in the drawing has one end grounded and the other end connected to a 12-volt load. A first battery 2 having a supply voltage, 12
A second battery 3 having a volt supply voltage and the first battery
A first contact 10 connected to the other end of the battery 2 of
A second contact 11 connected to one end of the second battery 3
And opening and closing between the first contact 10 and the second contact 11 and deactivating the first and second contacts 10 and 11
A first switching mechanism 4 including a first exciting coil 12 that closes the space, and a third switching mechanism 4 connected to the other end of the second battery 3.
Contact point 13, a fourth contact point 14 connected to the one end of the first battery 2, the third contact point 13 and a fourth contact point
The second exciting coil 1 for opening and closing the contacts 14 of the above and closing the third and the fourth contacts 13 and 14 when not excited.
The second switching mechanism 5 including the first battery 2
Open and close between the fifth contact 16 connected to the other end, the sixth contact 17 connected to the other end of the second battery 3, and the fifth contact 16 and the sixth contact 17. A third switching mechanism 6 including a third exciting coil 18 that closes the fifth and sixth contacts 16 and 17 when not excited.
And the third exciting coil 18 is delayed from the first exciting coil 12 to be excited, and the third exciting coil 1
8, a control mechanism 7 for delaying the first exciting coil 12 to deactivate the first exciting coil 12, and between the first contact 10 and the second contact 11 provided in the first switching mechanism 4, or ,
An indicator lamp 9 as a display means is provided between the third contact 13 and the fourth contact 14 provided in the second switching mechanism 5.

In the automobile power supply device 1 having such a basic configuration, a starter (not shown) is provided on the starting side (starter switch S
When W'is operated to the ON side), each switching mechanism operates in the order of the first switching mechanism 4, the second switching mechanism 5, and the third switching mechanism 6 in response to the signal from the control mechanism 7. The first battery 2 and the second battery 3 are connected in series to supply a high voltage of 24 volts. In other words, 24 volt power is supplied to the starter motor (not shown),
At this time, the indicator lamp 9 which is a display means is turned on.

Next, when the starter is operated to the non-starting side (starter switch SW ′ is OFF side), the signal from the control mechanism 7 causes the third switching mechanism 6, the second switching mechanism 5, and the first switching mechanism 4 to operate. The respective switching mechanisms are restored in order, the first battery 2 and the second battery 3 are connected in parallel, and a normal voltage of 12 volts is supplied. That is, the indicator lamp 9 which is a display means is turned off here.

(Embodiment) An automobile power supply device according to an embodiment of the present invention will be described below with reference to FIG.

That is, the power supply device 1 for an automobile has a first battery 2 having a 12-volt supply voltage whose one end is grounded and the other end is connected to a load for 12-volt, and a 12-volt like the first battery 2. A second battery 3 having a supply voltage and a first battery connected to the other end of the first battery 2.
The contact 10 of the second battery 3, the second contact 11 connected to one end of the second battery 3, and the first contact 10 and the second contact 11 are opened and closed and the first and second contacts are deenergized. First exciting coil 12 that closes the contacts 10 and 11 of the
A first switching mechanism 4 which is a relay in this embodiment, a third contact 13 connected to the other end of the second battery 3, and a connection to the one end of the first battery 2. A second exciting coil that opens and closes the fourth contact 14 and the third contact 13 and the fourth contact 14 and closes the third and fourth contacts 13 and 14 when not excited. The second, which in this embodiment with 15 is a relay
Switching mechanism 5, a fifth contact 16 connected to the other end of the first battery 2, a sixth contact 17 connected to the other end of the second battery 3, 5 contacts 16
And a third exciting coil 18 that opens and closes the sixth contact 17 and opens between the fifth and sixth contacts 16 and 17 when not excited, which is a relay in this embodiment. The third switching mechanism 6 and the first exciting coil 12 delay the third exciting coil 18 for excitation and the third exciting coil 18 delays the first exciting coil 12 for non-excitation. In this embodiment, the indicator light 9 is provided between the first contact 10 and the second contact 11 provided in the first switching mechanism 4.

The control mechanism 7 includes a fixed contact 32, a movable contact 31, and an exciting coil 30 which are connected to the first exciting coil 12.
Relay RL2, a relay RL3 having a fixed contact 35, a fixed contact 44, a movable contact 34 and an exciting coil 33 which are connected to the second exciting coil 15 via a diode D9, and the third exciting coil 18 A relay RL4 having a fixed contact 38, a movable contact 37 and an exciting coil 36 connected to the fixed contact 4 connected to the exciting coil 42 of the starter relay 8 via an external terminal CL1.
1, a relay RL5 having a movable contact 40 and an exciting coil 39, and a relay RL1 connected to the fixed contact 31 of the relay RL2 via a diode D11.

The external terminal B ₂ of the control mechanism 7 is connected to the fixed terminal 43 of the relay RL1, and is also connected to the resistor R4, the base of the transistor TR2, and the resistor R5 via the Zener diode ZD. The collector of the transistor TR2 is grounded via the capacitor C4.

The external terminal ST of the control mechanism 7 is connected to the resistor R1, the other end of the capacitor C1 whose one end is grounded, and the diode D1. Here, the external terminal ST is divided into two parts, one of which is the relay RL3.
Is connected to the fixed terminal 44. The other is connected to the other end of the capacitor C2 whose one end is grounded, the resistor R2, the other end of the resistor R3 whose one end is grounded, and the base of the transistor TR1, and the collector of the transistor TR1.
One end is connected to the other end of the capacitor C3 whose ground is connected to the exciting coil 30 of the relay RL2. Then, this connection end is connected to the fixed terminal 35 of the relay RL3 via the diode D20.

The external terminal ST is connected to the resistor R6, the other end of the resistor R7 whose one end is grounded, and the base of the transistor TR3. The external terminal ST is connected to the collector of the transistor TR3 and the other end of the capacitor C5 whose one end is grounded. , And is connected to the exciting coil 33 of the relay RL3. This connection end is connected to the transistor TR2 via the diode D4.
Is connected to the collector of the diode D13
Is connected to one end of the exciting coil 39 of the relay RL5.

Further, the external terminal ST is connected to the other end of the exciting coil 39 of the relay RL5, and is also connected to one end of the exciting coil 36 of the relay RL4 via the diode D8 and the diode D6. A diode D7 connected to the external connection terminal CL1 is connected to a connection point between D8 and the diode D6.

The external terminal CL1 is connected to the fixed terminal 41 of the relay RL5, connected to the base of the transistor TR4 via the resistor R8, and further grounded via the resistor R9. The collector of the transistor TR4 is connected to one end of the exciting coil 39 of the relay RL5.

On the other hand, between the first contact 10 and the second contact 11 provided in the first switching mechanism 4, in this embodiment,
An indicator light 9 having a 12-volt specification is connected.

Next, the operation of the vehicle power supply device 1 according to the above embodiment will be described.

First, when the starter switch SW ′ is turned on, a voltage is applied to the base of the transistor TR1 via the resistor R1, the diode D1, and the resistor R2, and the transistor TR1 is turned on.
1 is turned on, the exciting coil 30 of the relay RL2 is energized and excited through the diode D10, and the relay RL
The second movable contact 31 and fixed contact 32 are closed. As a result, power is supplied to the exciting coil 12 of the first switching mechanism 4 via the external terminal BL1 of the control mechanism 7,
When excited, the first switching mechanism 4 operates.

When the starter switch SW 'is turned on, as described above, the transistor TR1 is turned on, and at the same time, a voltage is applied to the base of the transistor TR3 via the resistor R6 and the transistor TR3 is also turned on, so that the relay RL3.
The exciting coil 33 is excited to bring the movable contact 34 of the relay RL3 into contact with the fixed contact 35. As a result, the external terminal AL2 of the control mechanism 7 is grounded, the exciting coil 15 of the second switching mechanism 5 is excited, and the second switching mechanism 5 operates.

Further, by turning on the starter switch SW ′, at the same time as turning on the transistors TR1 and TR3,
The exciting coil 36 of the relay RL4 is excited via the diodes D8 and D6, and the movable contact 37 of the relay RL4 is closed with the fixed contact 38. As a result, the external terminal DL2 of the control mechanism 7 is grounded, the exciting coil 18 of the third switching mechanism 6 is excited, and the third switching mechanism 6 operates.

In other words, by turning on the starter switch SW ',
By each control of the control mechanism 7, the first contact 10 and the contact 19 of the first switching mechanism 4 are brought into contact with each other, and the fourth contact 14 and the contact 20 of the second switching mechanism 5 are brought into contact with each other. The contact point 16 and the contact point 17 of the switching mechanism 6 are brought into contact with each other, and the respective switching mechanisms are sequentially operated to bring the first battery 2 and the second battery 3 into a serial connection state,
The voltage of the volt is generated at the external terminal B2 of the control mechanism 7.

Then, when 24 V is generated at the external terminal B2, the transistor TR2 is turned on via the Zener diode ZD (18 V Zener voltage specification), and the relay R is turned on via the diode D13 and the diode D4.
L3 is in the operation memory state. That is, while the 24 V power supply is generated at the external terminal B2 of the control mechanism 7, the first
The switching mechanism 4 and the second switching mechanism 5 can maintain the operating state, and can supply a 24-volt power source to the starter motor to rotate the starter motor.

Further, here, the diode D13 is grounded,
As a result, the exciting coil 39 of the relay RL5 is excited, the contact 40 and the contact 41 of the relay RL5 are closed, and turned on by applying power to the base of the transistor TR4 via the resistor R8. Therefore, the relay RL5 is in the operation memory state. Then, power is applied to the diode D7, the exciting coil 36 of the relay RL4 is excited, and the movable contact 37 of the relay RL4 is excited.
And the fixed contact 38 are closed.

That is, here, the power source in the first battery 2 is
The first contact 10 provided in the first switching mechanism 4 and the contact 19
And the exciting coil 15 of the second switching mechanism 5 and the control mechanism 7.
External terminal AL2, diode D9, and relay RL3
Since it is grounded via the fixed contact 35 and the movable contact 34, the first contact 10 of the first switching mechanism 4
The indicator lamp 9 connected to the second contact 11 can be turned on.

Next, starter switch SW 'is turned off from ON operation.
When switching to the operation, the transistor TR1 is turned off, the transistor TR3 is also turned off, and the diode D8 is not energized, but the transistor TR2 is turned on through the Zener diode ZD and the diode D4 is grounded. , Relay RL3 is held,
The second switching mechanism 5 enters the holding state via the diode D9.

Then, in the relay RL5, the power supply of the exciting coil 39 is turned off.
By doing so, the movable contact 40 and the fixed contact 41 of the relay RL5 are opened, and the potential of the external terminal CL1 of the control mechanism 7 disappears.

Further, when the exciting coil 36 of the relay RL4 is also turned off, the movable contact 37 and the fixed contact 38 of the relay RL4 are opened, and the third switching mechanism 6 connected to the external terminal DL2 of the control mechanism 7 is opened. The exciting coil 18 is de-excited and the third switching mechanism 6 returns.

Here, the capacitor C4 is OFF, the exciting coil 33 of the relay RL3 is in the non-excited state via the diode D4, the movable contact 34 of the relay RL3 is restored, and thus the excitation of the second switching mechanism 5 is performed. Coil 15
Becomes a non-excitation state, and the second switching mechanism 5 returns.

That is, the external terminal DL2 of the control mechanism 7 is connected to the relay RL.
5 and the relay RL4 are both turned off after returning, and the external terminal AL2 of the control mechanism 7 is turned off after the relay RL3 is returned via the diode D5.

Then, after the relay RL3 returns, the condenser C2
With the delayed discharge of, the relay RL2 also recovers, the excitation relay 12 of the first switching mechanism 4 becomes non-excited, and it is connected to the first contact 10 and the second contact 11 of this first switching mechanism 4. The indicator lamp 9 is turned off.

That is, the signal from the control mechanism 7 causes the first switching mechanism 4 and the second switching mechanism 4 to operate.
The switching mechanism 5 and the third switching mechanism 6 are sequentially controlled, the power supply to the starter motor is switched from 12 V to 24 V and supplied, the indicator lamp 9 is lit, and then the third switching is performed. The mechanism 6, the second switching mechanism 5, and the first switching mechanism 4 can be turned off in this order, the 24 volt power source can be returned to 12 volts, and the indicator lamp 9 can be turned off.

That is, when the driver turns on the starter switch SW ′, it can be confirmed that the indicator lamp 9 is operating normally, and even if the starter SW ′ is turned off, the indicator lamp 9 is turned on.
If is lit, you can confirm that something is wrong.

Further, the indicator light 9 is a 12-volt specification bulb,
It goes without saying that it is more reliable than the 24-volt version.

In the embodiment of the present invention, the first switching mechanism 4
The case where the indicator lamp 9 is provided between the first contact 10 and the second contact 11 provided in the above description has been described.
Even when the indicator lamp 9 is provided between the third contact 13 and the fourth contact 14 provided in the above, the same effect can be obtained.

[Effects of the Invention] As described above, according to the power supply device for an automobile of the present invention, the first battery having the 12-volt supply voltage, one end of which is grounded and the other end of which is connected to the 12-volt load. A second battery having a 12 volt supply voltage; a first contact connected to the other end of the first battery; a second contact connected to one end of the second battery; A first switching mechanism including a first exciting coil that opens and closes between the first contact and the second contact and closes between the first and second contacts when de-energized; and the second battery A third contact connected to the other end of the first battery, and a fourth contact connected to the one end of the first battery,
A second switching mechanism including a second exciting coil that opens and closes between the third contact and the fourth contact and closes between the third and fourth contacts when not excited; A fifth contact connected to the other end of the battery, a sixth contact connected to the other end of the second battery, and opening and closing between the fifth contact and the sixth contact and at the time of non-excitation A third switching mechanism including a third exciting coil that opens between the fifth and sixth contacts, and the third exciting coil is delayed from the first exciting coil to be excited and the third exciting coil is excited. And a control mechanism for delaying the first exciting coil from the exciting coil to deactivate the first exciting coil, between the first contact and the second contact provided in the first switching mechanism, or the second contact. Configuration in which display means is provided between the third contact and the fourth contact provided in the switching mechanism Since the actuation, in which an excellent effect that the presence of inoperative and abnormal occurrence can be displayed to the driver.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing the basic structure of an automobile power supply device according to the present invention, FIG. 2 is a circuit diagram showing an automobile power supply device according to an embodiment of the present invention, and FIG. 3 is a conventional automobile power supply device. It is a circuit diagram shown. DESCRIPTION OF SYMBOLS 1 ... Automotive power supply device, 2 ... 1st battery, 3 ... 2nd battery, 4 ... 1st switching mechanism, 5 ... 2nd switching mechanism, 6 ... 3rd switching mechanism, 7 ... Control mechanism, 9 ... Indicator light (display means), 10 ... 1st contact, 11 ... 2nd contact, 12 ... 1st exciting coil, 13 ... 3rd contact, 14 ... 4th contact, 15 ... 2nd Excitation coil, 16 ... Fifth contact point, 17 ... Sixth contact point, 18 ... Third excitation coil.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsuhiko Saito 1-chome, Ijichome, Ageo City, Saitama Prefecture Nissan Diesel Industry Co., Ltd. (72) Yuichi Tanji 1-chome, Ageo-shi, Saitama Prefecture Nissan Diesel Industry Incorporated (72) Inventor Katsushi Kato 1760 Higashimatano-cho, Totsuka-ku, Yokohama, Kanagawa Prefecture Automotive Electric Industry Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A first battery having a 12 volt supply voltage having one end grounded and the other end connected to a 12 volt load; a second battery having a 12 volt supply voltage; and the first battery. A first contact connected to the other end of the battery, a second contact connected to one end of the second battery, the first contact and the second contact are opened and closed, and are deenergized. A first switching mechanism including a first exciting coil that closes between the first and second contacts, a third contact connected to the other end of the second battery, and a first contact of the first battery. A fourth contact connected to the one end,
A second switching mechanism including a second exciting coil that opens and closes between the third contact and the fourth contact and closes between the third and fourth contacts when not excited; A fifth contact connected to the other end of the battery, a sixth contact connected to the other end of the second battery, and opening and closing between the fifth contact and the sixth contact and at the time of non-excitation A third switching mechanism including a third exciting coil that opens between the fifth and sixth contacts, and the third exciting coil is delayed from the first exciting coil to be excited and the third exciting coil is excited. A control mechanism for delaying the first exciting coil from the exciting coil to make it non-excited, and between the first contact and the second contact provided in the first switching mechanism, or the second contact. Display means is provided between the third contact and the fourth contact provided in the switching mechanism. Automobile power unit according to claim.