JP2018020613A - On-vehicle emergency power unit and vehicle using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reliably flash a hazard lamp for a long period of time in emergency in a vehicle.SOLUTION: An on-vehicle emergency power unit includes: an input part 10 supplied with electric power from a vehicular battery 9; an output part 12 for supplying electric power to a hazard lamp 11; a signal detector 14 for detecting an ON/OFF state of an engine switch 13; a charge circuit part 15, a power storage element 16 and a discharge circuit part 17 arranged between the input part 10 and the output part 12; and an emergency power source controller 18. In the case where the engine switch 13 is in the ON state and voltage in the input part 10 is equal to a threshold or higher, the emergency power source controller 18 controls the charge circuit part 15 so that the power storage element 16 is charged, and controls so that operation of the discharge circuit part 17 is stopped. In the case where the engine switch 13 is in the ON state and voltage in the input part 10 is lower than the threshold, operation of the charge circuit part 15 stops, and the discharge circuit part 17 is controlled so that electric power is repeatedly and intermittently outputted from the output part 12 using electric power of the power storage element 16.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an in-vehicle emergency power supply device used for various vehicles and a vehicle using the same.

  A conventional emergency power supply device will be described below with reference to the drawings. FIG. 4 is a block diagram showing a configuration of a conventional emergency power supply apparatus. In the emergency power supply apparatus 1, a power storage unit 2, a booster circuit 3, and a lamp drive unit 4 are arranged. The battery 6 mounted on the vehicle 5 supplies power to the emergency power supply 1, and the lamp driving unit 4 switches the power supply path to the hazard lamp 7 in response to normal or emergency.

  For example, Patent Document 1 is known as prior art document information related to the invention of this application.

JP 2009-202616 A

  However, in the conventional emergency power supply device 1, the lamp driving unit 4 supplies power to the hazard lamp 7 when the vehicle 5 is in a normal state or when the vehicle 5 is in an emergency state. Since it has the operation | movement which switches a path | route and is concerned with the operation | movement of both the normal time and emergency of the vehicle 5, it was necessary to provide many functions. As a result, a large amount of electric power is required for the operation of the lamp driving unit 4, that is, the operation of the emergency power supply device 1, and there is a problem with continuing the operation of the emergency power supply device 1 for a long time.

  Accordingly, an object of the present invention is to enable a long-time operation of an in-vehicle emergency power supply device in an emergency.

  In order to achieve this object, the present invention provides an input unit for supplying power from a vehicle battery, an output unit for supplying power to a hazard lamp, and a signal detection for detecting an on / off state of an engine switch. A charging circuit unit, a storage element, a discharging circuit unit, the input unit, the signal detecting unit, the output unit, the charging circuit unit, and the discharging circuit disposed between the input unit, the input unit, and the output unit. An emergency power supply control unit connected to the power supply unit, and when the engine switch is on and the emergency power supply control unit detects that the voltage at the input unit is equal to or higher than a threshold value, the emergency power supply control The control unit controls the charging circuit unit so that the power storage element is charged, and controls to stop the operation of the discharge circuit unit, the engine switch is on, and the emergency switch When the source control unit detects that the voltage at the input unit has dropped below a threshold value, the emergency power source control unit controls to stop the operation of the charging circuit unit and uses the power of the storage element. The discharge circuit unit is controlled such that predetermined power is repeatedly and intermittently output from the output unit.

According to the present invention, when the in-vehicle emergency power supply detects that an emergency has occurred, the in-vehicle emergency power supply supplies power to the hazard lamp by itself. And the electric power for blinking a hazard lamp is supplied according to operation | movement of the discharge circuit part which an in-vehicle emergency power supply device has. In other words, the hazard lamp can be blinked by operating only the discharge circuit unit included in the in-vehicle emergency power supply device and the emergency power supply control unit that controls the discharge circuit unit. For this reason, when the in-vehicle emergency power supply apparatus determines that an emergency or emergency has occurred, only a very limited number of circuits operate and the hazard lamp blinks. As a result, the in-vehicle emergency power supply device can supply power to the hazard lamp for a long time.

The circuit block diagram which shows the structure of the vehicle-mounted emergency power supply device in embodiment of this invention. The flowchart which shows operation | movement of the vehicle-mounted emergency power supply device in embodiment of this invention. The circuit block diagram of the vehicle carrying the vehicle-mounted emergency power supply device in embodiment of this invention. The circuit block diagram which shows the structure of the conventional vehicle-mounted emergency power supply device.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment)
FIG. 1 is a circuit block diagram showing a configuration of an in-vehicle emergency power supply apparatus according to an embodiment of the present invention, and FIG. 2 is a flowchart showing an operation of the in-vehicle emergency power supply apparatus according to the embodiment of the present invention.

  The in-vehicle emergency power supply device 8 includes an input unit 10 to which power is supplied from the vehicle battery 9, an output unit 12 that supplies power to the hazard lamp unit 11, and a signal for detecting the on / off state of the engine switch 13. Detection unit 14, charging circuit unit 15, storage element 16, discharge circuit unit 17, input unit 10, signal detection unit 14, output unit 12, and charging circuit unit disposed between input unit 10 and output unit 12 15 and an emergency power supply control unit 18 connected to the discharge circuit unit 17.

  Here, when the engine switch 13 is on and the emergency power supply control unit 18 detects that the voltage at the input unit 10 is equal to or higher than the threshold value, the emergency power supply control unit 18 is configured to charge 16 power storage elements. The charging circuit unit 15 is controlled and the operation of the discharging circuit unit 17 is stopped.

  When the engine switch 13 is on and the emergency power supply control unit 18 detects that the voltage at the input unit 10 has dropped below the threshold value, the emergency power supply control unit 18 stops the operation of the charging circuit unit 15. The discharge circuit unit 17 is controlled so that predetermined power is repeatedly output intermittently from the output unit 12 using the power of the power storage element 16.

  With the above configuration and operation, when the in-vehicle emergency power supply 8 detects that an emergency has occurred due to damage to the vehicle battery 9 or the like, the in-vehicle emergency power supply 8 itself outputs to the hazard lamp unit 11 the output unit 12. To supply power. Then, power for blinking the hazard lamp unit 11 is supplied according to the operation of the discharge circuit unit 17. In other words, by operating only the discharge circuit unit 17 included in the in-vehicle emergency power supply device 8 and the emergency power supply control unit 18 that controls the discharge circuit unit 17, the hazard lamp unit 11 can be blinked. For this reason, when the in-vehicle emergency power supply device 8 determines an emergency state or an emergency situation, only a limited number of circuits operate. Therefore, the in-vehicle emergency power supply 8 can supply power to the hazard lamp unit 11 for a long time.

  In the following, the configuration and operation of the in-vehicle emergency power supply device 8 will be mainly described with reference to the flowchart of FIG. 2 and the circuit block diagram of the vehicle equipped with the in-vehicle emergency power supply device in the embodiment of the present invention in FIG. explain.

  In FIG. 3, a vehicle 20 includes a vehicle body 20A, a vehicle battery 9 disposed on the vehicle body 20A, and a hazard lamp unit 11 disposed on the vehicle body 20A and connected to the vehicle battery 9 via a main power line 9A. The engine 19 disposed on the vehicle body 20A, the engine switch 13 connected to the vehicle battery 9 to switch the engine 19 on and off, and the in-vehicle emergency power supply 8 are included.

  The in-vehicle emergency power supply 8 is disposed in parallel connection with the main power supply line 9A that directly connects the vehicle battery 9 and the hazard lamp unit 11. Further, the in-vehicle emergency power supply device 8 detects an on / off state of the input unit 10 to which power is supplied from the vehicle battery 9, the output unit 12 for supplying power to the hazard lamp unit 11, and the engine switch 13. The signal detection unit 14, the charging circuit unit 15, the storage element 16, the discharge circuit unit 17, the input unit 10, the signal detection unit 14, the output unit 12, and the charging circuit disposed between the input unit 10 and the output unit 12. An emergency power supply control unit 18 connected to the unit 15 and the discharge circuit unit 17.

  Here, when the in-vehicle emergency power supply device 8 detects that the engine switch 13 is on and the emergency power supply control unit 18 detects that the voltage at the input unit 10 is equal to or higher than the threshold value, the emergency power supply control unit 18 The charging circuit unit 15 is controlled so that the storage element 16 is charged, and the operation of the discharging circuit unit 17 is controlled to stop. When the engine switch 13 is on and the emergency power supply control unit 18 detects that the voltage at the input unit 10 has dropped below the threshold value, the emergency power supply control unit 18 stops the operation of the charging circuit unit 15. The discharge circuit unit 17 is controlled so that predetermined power is repeatedly and intermittently output from the output unit 12 using the power of the storage element 16.

  Further, here, the engine switch 13 is connected to an engine 19 that is activated using the electric power of the vehicle battery 9. Although not shown or described here, various loads (not shown) are actually connected to the engine 19 in parallel. The load (not shown) may be activated not by the engine switch 13 but by an accessory switch (not shown), but the engine 19 is activated only by the engine switch 13.

  The operation of the vehicle 20 and the in-vehicle emergency power supply 8 will be described in order. First, the signal detection unit 14 detects whether the engine switch 13 is in an off state or an on state. The operation relating to detection here may be performed by the signal detection unit 14 alone, by the emergency power control unit 18 connected to the signal detection unit 14, or by the signal detection unit 14 and the emergency power control unit 18. And can be either. Here, the signal detection unit 14 detects that the engine switch 13 is on, that is, the engine switch 13 is switched from the off state to the on state, and the emergency power control unit 18 detects that the engine switch 13 is on. Detect that it is in a state.

In response to the signal detection unit 14 or the emergency power supply control unit 18 detecting that the engine switch 13 is on, the emergency power supply control unit 18 activates the charging circuit unit 15 to charge the storage element 16. Further, the discharge circuit unit 17 is controlled by the emergency power supply control unit 18 so that the operation is stopped before the engine switch 13 is turned on, and is also stopped here. Here, the storage element 16 is in a charged state at a predetermined holding voltage before the engine switch 13 is turned on. The voltage value adjustment to the holding voltage may be adjusted by operating the discharge circuit unit 17 when the engine switch 13 has been previously switched from the on state to the off state.

  Here, the charging circuit unit 15 does not need to operate at all times, and may operate periodically. Then, after the emergency power control unit 18 detects that the engine switch 13 is in the on state and the power storage element 16 is charged to a predetermined voltage or higher, the emergency power control unit 18 What is necessary is just to operate | move using the electric power stored in. As a result, the emergency power supply controller 18 is less susceptible to the influence of the vehicle battery 9 when continuing its own operation, and the vehicle-mounted emergency power supply device 8 can be controlled by an independent operation.

  The above corresponds to the operation 1 and the operation 2 in the flowchart of FIG.

  Next, when the emergency power control unit 18 detects that the storage element 16 has been charged to a predetermined voltage or higher, the emergency power control unit 18 always detects and monitors the voltage of the vehicle battery 9. The voltage of the vehicle battery 9 may be detected at the input unit 10 or may be detected at the input side of the charging circuit unit 15. Although the input unit 10 and the charging circuit unit 15 are illustrated as separate elements in FIG. 1, the input unit 10 may be included in the charging circuit unit 15.

  The emergency power supply control unit 18 may directly detect the voltage of the power storage element 16 by connecting the emergency power supply control unit 18 and the power storage element 16. Alternatively, the emergency power control unit 18 may detect the voltage of the power storage element 16 through the charging circuit unit 15 or the discharging circuit unit 17.

  Here, when the voltage of the vehicle battery 9 detected by the input unit 10 is always equal to or higher than the threshold value, the emergency power control unit 18 determines that the vehicle 20 or the vehicle battery 9 is in a normal state. The charging circuit unit 15 is periodically operated to charge the storage element 16 to a predetermined voltage or higher, similar to the case where the emergency power supply control unit 18 detects that the engine switch 13 is in the on state. To do.

  When the vehicle battery 9 is in a normal state, the in-vehicle emergency power supply device 8 is arranged in parallel with the main power supply line 9A and is charged so that the power storage element 16 is maintained at a predetermined voltage or higher. Is repeated, and no power is output from the output unit 12. For this reason, the in-vehicle emergency power supply device 8 is not involved in supplying power to the hazard lamp unit 11 when the vehicle battery 9 is in a normal state. Therefore, the in-vehicle emergency power supply device 8 and the emergency power supply control unit 18 do not need to have a special relationship with a vehicle control unit (not shown) mounted on the vehicle 20.

  The above corresponds to the operations 3 and 4 in the flowchart of FIG.

  On the other hand, when the voltage of the vehicle battery 9 detected by the input unit 10 becomes lower than the threshold value, the emergency power control unit 18 determines that the vehicle 20 or the vehicle battery 9 is in an abnormal state. That is, although the engine switch 13 is on and the engine 19 is in an activated state, the voltage of the vehicle battery 9 suddenly drops, so that the emergency power control unit 18 has encountered an accident such as a collision of the vehicle 20. to decide. Although not shown here, it is determined that the emergency power supply control unit 18 has encountered an accident such as a collision after information from a collision detector (not shown) is added to the above determination. The procedure may be a procedure in which the accuracy of judgment is increased as judgment.

  When the emergency power supply control unit 18 determines that the vehicle battery 9 is in an abnormal state, the emergency power supply control unit 18 stops charging the power storage element 16 by the charging circuit unit 15. After the charging circuit unit 15 is stopped by this control, the electric power stored in the electric storage element 16 is not used other than electric power for maintaining the function of the emergency power supply control unit 18.

  That is, when the vehicle battery 9 is in a normal state, the emergency power supply control unit 18 may instruct the discharge circuit unit 17 to perform a discharge operation or the like with weak power in order to avoid an overcharged state of the power storage element 16. . On the other hand, when the emergency power control unit 18 determines that the vehicle battery 9 is in an abnormal state, the emergency power control unit 18 performs control so as to maintain the power stored in the power storage element 16 as much as possible. For this reason, when the vehicle battery 9 falls into an abnormal state, the power stored in the power storage element 16 is maintained to the maximum as emergency power.

  The above corresponds to the operations 3 and 5 in the flowchart of FIG.

  Furthermore, at the same time as the charging operation by the charging circuit unit 15 stops, or after a predetermined period after the charging circuit unit 15 stops, the discharging circuit unit 17 is activated in response to an instruction from the emergency power supply control unit 18. The discharge circuit unit 17 does not operate continuously, but the emergency power supply control unit 18 provides an operation period during which power is output from the output unit 12 and a pause period during which power is not output from the output unit 12. In other words, the emergency power supply control unit 18 controls the discharge circuit unit 17 to operate intermittently. The operation period and the rest period may be set as equivalent periods of the lighting period and the extinguishing period when the hazard lamp unit 11 operates when the vehicle 20 is normal.

  The above corresponds to the operation 6 in the flowchart of FIG.

  As described above, when the in-vehicle emergency power supply 8 detects that an emergency has occurred, the in-vehicle emergency power supply 8 uses the electric power of the power storage element 16 that the in-vehicle emergency power supply 8 owns to the hazard lamp unit 11 itself. Then, power is supplied from the output unit 12. In other words, when the in-vehicle emergency power supply 8 is determined to be in an emergency state or an emergency, only a limited number of circuits provided in the in-vehicle emergency power supply 8 operate. Therefore, the in-vehicle emergency power supply 8 can supply power to the hazard lamp unit 11 for a long time.

  In an emergency, the hazard lamp unit 11 can be blinked only by the switching operation of the discharge circuit unit 17 included in the in-vehicle emergency power supply device 8 and the control by the emergency power source control unit 18 for the switching operation of the discharge circuit unit 17. Further, the lighting period and the extinguishing period of the hazard lamp unit 11 can be determined only by the control for the switching operation.

  In other words, when the electric power stored in the electricity storage element 16 is boosted or lowered by the discharge circuit unit 17 and an appropriate voltage is supplied to the hazard lamp unit 11, the power consumed by the hazard lamp unit 11 for light emission The power consumed in addition to the above is limited to a small power related to the switching operation. Further, the power consumed as a loss due to the switching operation or the like in the discharge circuit unit 17 is an intermittent operation depending on the lighting period and the extinguishing period, and thus is suppressed to be small. Therefore, the vehicle-mounted emergency power supply device 8 can supply power to the hazard lamp unit 11 over a long period of time by operating only the vehicle-mounted emergency power supply device 8.

  The in-vehicle emergency power supply device 8 and the emergency power supply control unit 18 are connected and arranged in parallel to the main power supply line 9A. The in-vehicle emergency power supply 8 and the emergency power supply control unit 18 are an abnormal state in which the vehicle 20 loses power supply from the main power supply line 9A from a vehicle control unit (not shown) mounted on the vehicle 20 or. When it falls into, the main power supply line 9A is not involved in electric power. Therefore, since the in-vehicle emergency power supply device 8 and the emergency power supply control unit 18 can be operated and controlled independently, power can be reliably supplied to the hazard lamp unit 11.

As a result, even when the vehicle 20 encounters an accident, even if power supply due to damage of the vehicle battery 9 or the like becomes impossible, the hazard lamp unit 11 starts blinking automatically,
In addition, the hazard lamp unit 11 can blink for a long time. The occurrence of a secondary accident or the like is suppressed by a warning from the hazard lamp unit 11 to the surroundings.

  Here, the hazard lamp unit 11 in FIGS. 1, 2 and 3 is composed of a relay (not shown) and a lamp (not shown) which is a light emitting unit, and opens and closes the relay (not shown). When the vehicle emergency power supply 8 supplies power to the lamp (not shown) when the vehicle 20 is abnormal, or the vehicle emergency power supply 8 is only supplied to the lamp (not shown) when the vehicle 20 is abnormal. Electric power may be supplied.

  In particular, the in-vehicle emergency power supply 8 can easily and intermittently supply power to a lamp (not shown) when the vehicle 20 is abnormal. The lamp unit 11 can be blinked. Accordingly, power for blinking is directly supplied to a lamp (not shown) without using a relay (not shown), so that power for driving the relay (not shown) becomes unnecessary. Therefore, the in-vehicle emergency power supply device 8 can supply power to the hazard lamp unit 11 for a longer period and cause the hazard lamp unit 11 to blink.

  Since the relay (not shown) is not used, the in-vehicle emergency power supply 8 also has a vehicle battery 9 and a lamp (not shown) when the in-vehicle emergency power supply 8 is installed in the vehicle 20. It is not necessary to consider the relevance with the vehicle control part (not shown) accompanying control of a relay (not shown). For this reason, the convenience in installation is also improved.

  Furthermore, since the convenience in installation is improved, there are many options regarding the installation location in the vehicle 20, and the in-vehicle emergency power supply 8 can be installed at a position adjacent to the hazard lamp unit 11 or at the rear of the vehicle. . For this reason, the length of the emergency output conductor path 12A interposed between the output part 12 and the hazard lamp part 11 of the in-vehicle emergency power supply device 8 can be shortened. As a result, when the vehicle 20 encounters an accident, the possibility of occurrence of damage in the emergency output conductor path 12 </ b> A is suppressed, and the in-vehicle emergency power supply device 8 can reliably supply power to the hazard lamp unit 11.

  As a matter of course, the vehicle-mounted emergency power supply device 8 may be provided on each of the hazard lamp portions 11 of the vehicle 20 at the front left and right and the rear left and right one-on-one. Alternatively, one in-vehicle emergency power supply device 8 is provided for the front left and right hazard lamp portions 11 in the vehicle 20, and another in-vehicle emergency power supply device 8 is provided for the rear left and right hazard lamp portions 11. May be provided.

  Further, as described above, the discharge circuit unit 17 does not operate continuously, but the emergency power supply control unit 18 does not output power from the output unit 12 during the operation period in which power is output from the output unit 12. A pause period is provided to operate. That is, the emergency power supply control unit 18 controls the discharge circuit unit 17 to operate intermittently. The operation period and the rest period may be set as equivalent periods of the lighting period and the extinguishing period when the hazard lamp unit 11 operates when the vehicle 20 is normal, or the operation period and the rest period. May be changed according to the electric power remaining in the electric storage element 16.

When the hazard lamp unit 11 continues to blink for a long time, the electric power stored in the power storage element 16 decreases and the voltage of the power storage element 16 decreases. As a matter of course, this shortens the time during which the hazard lamp unit 11 can blink continuously thereafter. Therefore, for example, in response to the voltage of the storage element 16 being lower than a predetermined comparison threshold value, the operation period is shortened or the suspension period is extended between the lighting period and the extinguishing period. What is necessary is just to suppress the consumption of the electric power stored in 16. Thereby, the vehicle-mounted emergency power supply 8 can supply the power for blinking to the hazard lamp unit 11 for a longer period.

  Here, as described above, the comparison threshold value determined in advance for the voltage of the power storage element 16 may be a single value or a plurality of values. Alternatively, it may be set as an infinite number of values that are substantially continuous, and the operation period and the suspension period may be changed at any time using the relationship between the voltage of the power storage element 16 and the comparison threshold.

  In the above description, the type of the lamp (not shown) of the hazard lamp unit 11 is not particularly limited. However, by using, for example, an LED (light emitting diode) for the lamp (not shown), power consumption for lighting the lamp (not shown) is suppressed. Further, for example, an LED (light emitting diode) is used for a lamp (not shown), so that, in addition to the above-described suppression of power consumption, power loss due to heat generation in the LED (light emitting diode) is further suppressed. The operation time and the rest time of the in-vehicle emergency power supply device 8 in an emergency can be easily set at different times with respect to the lighting period and the extinguishing period when the vehicle 20 is in a normal state so that the operation can be performed smoothly. It becomes possible. As a result, the in-vehicle emergency power supply 8 can supply power to the hazard lamp unit 11 for a longer period.

  In the description so far, the kind of the storage element 16 arranged by connecting the high potential side between the charging circuit unit 15 and the discharging circuit unit 17 and grounding the low potential side is not particularly limited. Absent. The storage element 16 may be a lithium secondary battery, an electric double layer capacitor, a super capacitor, or the like. Regarding the storage element 16, not only the type of the storage element 16 but also the voltage value of the storage element 16 associated with the number of cells constituting the storage element 16 may be arbitrarily set. And according to the voltage which the electrical storage element 16 has, the discharge circuit part 17 should just operate | move by either a pressure | voltage rise operation or a pressure | voltage fall operation.

  When the engine switch 13 is switched from the on state to the off state, the holding voltage set for the power storage element 16 may be determined according to the characteristics of the power storage element 16. Thereby, the electric storage element 16 can have a long life.

  The in-vehicle emergency power supply device of the present invention has an effect of supplying power for blinking to the hazard lamp unit for a long time, and is useful in various vehicles.

DESCRIPTION OF SYMBOLS 8 In-vehicle emergency power supply device 9 Vehicle battery 9A Main power supply line 10 Input part 11 Hazard lamp part 12 Output part 12A Emergency output conductor 13 Engine switch 14 Signal detection part 15 Charging circuit part 16 Power storage element 17 Discharge circuit part 18 Emergency power supply Control unit 19 Engine 20 Vehicle 20A Body

Claims (6)

An input unit to which power is supplied from the vehicle battery;
An output for supplying power to the hazard lamp;
A signal detector for detecting the on / off state of the engine switch;
A charging circuit unit, a storage element, and a discharging circuit unit disposed between the input unit and the output unit;
An emergency power supply control unit connected to the input unit, the signal detection unit, the output unit, the charging circuit unit and the discharging circuit unit;
When the engine switch is on and the emergency power supply control unit detects that the voltage at the input unit is greater than or equal to a threshold value, the emergency power supply control unit is configured to charge the storage element so that the storage element is charged. Control the circuit part and control to stop the operation of the discharge circuit part,
When the engine switch is on and the emergency power supply control unit detects that the voltage at the input unit is lower than a threshold value, the emergency power supply control unit stops the operation of the charging circuit unit. And controlling the discharge circuit unit so that predetermined power is repeatedly output intermittently from the output unit using the power of the power storage element.
In-vehicle emergency power supply. The output unit and the light emitting unit of the hazard lamp are directly connected,
The in-vehicle emergency power supply device according to claim 1. The input unit is provided as a part of the charging circuit unit,
The output unit is provided as a part of the discharge circuit unit,
The in-vehicle emergency power supply device according to claim 1. When the engine switch is on and the emergency power supply control unit detects that the voltage at the input unit is greater than or equal to a threshold value, the emergency power supply control unit periodically charges the power storage element. And controlling the charging circuit unit to stop the operation of the discharging circuit unit,
The in-vehicle emergency power supply device according to claim 1. When the engine switch is on and the emergency power supply control unit detects that the voltage at the input unit is lower than a threshold value, the emergency power supply control unit stops the operation of the charging circuit unit. Controlling the discharge circuit unit so that predetermined power is intermittently output from the output unit using the power of the power storage element and repeating an operation period and a pause period,
Further, when the discharge circuit unit is not outputting power, the emergency power supply control unit detects the voltage of the power storage element, and when the voltage of the power storage element becomes lower than a threshold, the emergency power supply control unit The discharge circuit unit is controlled so that power is output from the discharge circuit unit by shortening the period or extending the pause period.
The in-vehicle emergency power supply device according to claim 1. The car body,
A vehicle battery disposed on the vehicle body;
A hazard lamp portion disposed on the vehicle body and connected to the vehicle battery via a main power line,
An engine disposed on the vehicle body; an engine switch connected to the vehicle battery to switch the engine on and off;
An input unit to which electric power is supplied from the vehicle battery, an output unit for supplying electric power to the hazard lamp unit, a signal detection unit for detecting an on / off state of the engine switch, the input unit and the output Emergency power control connected to the charging circuit unit, the storage element, the discharging circuit unit, the input unit, the signal detection unit, the output unit, the charging circuit unit, and the discharging circuit unit, And the emergency power supply control unit detects that the voltage at the input unit is equal to or higher than a threshold value, the emergency power supply control unit charges the power storage element. And controlling the charging circuit unit to stop the operation of the discharging circuit unit, the engine switch is in an on state, and the emergency power control unit is in the input unit When it is detected that the pressure has dropped below the threshold, the emergency power supply control unit controls to stop the operation of the charging circuit unit, and repeatedly and intermittently from the output unit using the power of the power storage element. A vehicle comprising: the in-vehicle emergency power supply device that controls the discharge circuit unit so that predetermined power is output and is arranged in parallel connection with a main power supply line.

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