KR101257024B1 - Regular power supplying apparatus having user switch - Google Patents

Abstract

The present invention relates to a constant power supply having a user operation power switch, the constant power input unit for receiving a battery voltage; A power output unit configured to output a voltage of a battery to an external device; A power supply relay turned on or off according to a control signal to selectively supply a battery voltage to a power output unit; A user operated power switch operated by the user to block or allow the battery voltage from being supplied to the power output; And controlling the power supply relay to be turned off when the battery voltage input to the constant voltage input unit while the vehicle is parked is lowered below a predetermined reference voltage value or when the user operation power switch is operated to the cutoff position. It includes a microcomputer to output a signal.

Description

REGULAR POWER SUPPLYING APPARATUS HAVING USER SWITCH}

The present invention relates to a constant power supply having a user-operated power switch, and more particularly, to a passive power supply that can always supply power even when all the power of the vehicle is turned off. The present invention relates to an always-on power supply device having an operation power switch.

In general, automobiles are equipped with a variety of peripheral devices such as black boxes, navigation, chargers.

Among them, a device such as a black box is equipped with a function of monitoring the front of the vehicle even when the vehicle is parked to photograph an accident occurring in the vehicle, so that the vehicle can continuously photograph the front even after the vehicle is turned off. Power needs to be supplied so that

Therefore, the black box is to receive power directly from a battery or a socket connected to the battery power at all times among the fuse box of the vehicle.

However, when the battery power is constantly consumed in the black box or another peripheral device, the battery may be completely discharged.

As a device for solving this problem, a constant power supply has been developed and applied. The constant power supply device may supply the constant power to a peripheral device such as a black box, but is provided with a timer to supply the constant power only for a predetermined time after the vehicle is turned off while the vehicle is parked. to be.

However, even in such a constant power supply, since the power is supplied for a predetermined time, there is a risk that the battery may be discharged if this time is set too long or the battery of the vehicle is not sufficiently charged. I still hold it.

The present invention for solving the above-described problems is connected to the vehicle by providing a constant power supply having a power cut-off function that can also cut off the power supply of the regular power when it is determined that the vehicle is off and parked An object of the present invention is to prevent unnecessary use of external devices and to minimize battery discharge.

The present invention for achieving the above object, the continuous power input unit is connected to the battery is always supplied with a battery voltage; A power output unit connected to the constant power input unit and outputting the battery voltage to the connected external device; A power supply relay disposed between the constant power input unit and the power output unit and selectively turned on or off according to an input control signal to selectively supply the battery voltage to the power output unit; A user operated power switch operated by a user to block or allow the battery voltage from being supplied to the power output unit from the regular power input unit; And monitoring the battery voltage input to the constant voltage input unit while the vehicle is parked to detect that the battery voltage is lowered below a predetermined reference voltage value or that the user operation power switch is operated to a cutoff position. It provides a constant power supply having a user-operated power switch comprising a microcomputer for outputting the control signal for operating the power supply relay off.

The apparatus may further include an ACC power input unit connected to a start switch of the vehicle, wherein the microcomputer monitors a voltage input to the ACC power input unit, and the reference voltage value is supplied to the ACC power input unit while the power supply relay is turned off. When the above voltage is detected, the control signal for operating the power supply relay on is characterized in that for outputting.

The apparatus may further include a first operation switch operable by a user to set the reference voltage value.

Further, a second operation switch operable by the user to set an arbitrary time; And a timer for timing the time set by the second operation switch, wherein the microcomputer turns off the power supply relay when it detects that the timer completes the timing of the time set by the second operation switch. And outputting the control signal for operating with.

According to the constant power supply apparatus according to the present invention having the configuration as described above, the function of interrupting the supply of the constant power when the vehicle is stopped and parked, and automatically starts supplying the constant power when the vehicle starts running By providing a user operation power switch to support the vehicle, when the vehicle is parked, it is possible to cut off unnecessary power supply to the devices that do not need to be driven at all times to minimize the discharge amount of the battery. In addition, since the power supply is automatically started for the connected external devices when the vehicle intends to start driving, the user may not feel inconvenience in using various external devices.

FIG. 1 is a view for briefly explaining a method of installing a regular power supply device having a user operation power switch according to an exemplary embodiment of the present invention in a vehicle.
2 is a block diagram illustrating an internal configuration of a regular power supply device having a user operation power switch according to an embodiment of the present invention.
3 is a flowchart illustrating an operation of a regular power supply device having a user operation power switch according to an exemplary embodiment of the present invention.
4 and 5 are a portion of the instruction manual of the always-on power supply according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings.

FIG. 1 is a view for briefly explaining a method of installing a regular power supply device having a user operation power switch according to an exemplary embodiment of the present invention in a vehicle. Referring to FIG. 1, the always-on power supply device 200 according to an embodiment of the present invention is disposed between a battery 100 and an external device 300 of a vehicle and supplies or cuts off power of a battery supplied to an external device. To control. In addition, the power supply 200 is also connected to the key box 110 of the vehicle, it is possible to control the battery power supplied to the external device 300 in accordance with the operation of the key box 110.

In the present invention, the external device 300 connected to the constant power supply 200 is shown and described as a vehicle black box. However, the black box is only the simplest example of the external device 300 that can be connected to the power supply 200 at any time, and any device such as an audio device, a navigation device, a car charger, a cigarette lighter, and the like may be used.

2 is a block diagram illustrating an internal configuration of a regular power supply device having a user operation power switch according to an embodiment of the present invention. The constant power supply 200 according to an embodiment of the present invention, the constant power input unit 210, the power output unit 220, the power supply relay 230, the user operation power switch 240, It comprises a microcomputer (250). In addition, the always-on power supply device 200 further includes an ACC power input unit 270, a first operation switch 280, and a second operation switch 290.

The constant power input unit 210 may be directly connected to the battery 100 or may be connected to a constant power source that may always receive power from the battery. By such a connection, the constant power input unit 210 receives a voltage charged in the battery 100 even when the vehicle is parked, that is, even when the key of the vehicle is turned off or the key is removed from the key box. It can be input.

The power output unit 220 is connected to the constant power input unit 210 to output a voltage supplied from the battery 100. The power output unit 220 may be prepared in the form of a connector or a plug corresponding to a dedicated or common power input means (eg, a connector) of the external device 300 to be connected. As an example, the power output unit 220 may have the form of a cigar socket.

The power supply relay 230 is disposed between the constant power input unit 210 and the power output unit 220, and according to the input control signal (for example, on or off of any voltage), the power supply input unit 210. ) And the electrical connection between the power output unit 220 and the power supply 220. The power supply relay 230 may control on or off the (+) line BATT between the constant power input unit 210 and the power output unit 220.

Meanwhile, the power supply relay 230 may be a general relay which is switched on and off every time a voltage of a certain value is input as a control signal, and may be configured using a switching element such as a power control MOSFET. have. That is, the power supply relay 230 may include a single or a plurality of active circuit elements, relays, solenoid switches, and the like that can automatically control the on or off of the circuit according to an arbitrary control signal.

The user operation power switch 240 is a switch provided to enable the user to arbitrarily operate the interruption / allow state of the constant power supply. When the user manipulates the user operation power switch 240, the microcomputer 250 detects whether the user operates in the blocked state or the allowed state.

The microcomputer 250 controls the overall operation of the power supply 200 at all times. In addition, the operation of the power supply relay 230 is controlled in response to various input information.

The microcomputer 250 provides a low voltage blocking function that prevents full discharge of the battery by blocking a voltage output to the power supply when the output voltage of the battery 100 is lowered below a predetermined reference voltage. To this end, the microcomputer 250 monitors the voltage value of the always-on power input to the always-on power input unit 210 at all times or every preset time. On the other hand, if the detected voltage value exceeds the reference value, it is possible to output a control signal for operating the power supply relay 230 on.

The reference voltage may be set to a fixed value in the design of the power supply at all times or may be arbitrarily changed by the first operation switch 280.

On the other hand, when the microcomputer 250 detects that the user manipulation power switch 240 is operated to the cutoff position, the microcomputer 250 controls a control signal for controlling the power supply relay 230 to be turned off regardless of the voltage value of the continuous power supply. Output By such a configuration, the user can cope with an operation to stop the operation of the power supply 200 at all times.

Here, it is preferable that the operation of the power supply relay 230 to be turned off after detecting that the user manipulation power switch 240 is operated to the cutoff position is performed only when the vehicle is parked. That is, when the vehicle is running or stopped, or when the keybox 110 of the vehicle is in the ACC or ON position, the user is regarded as being present in the vehicle (the user judges the use of the battery of the vehicle to complete It is desirable not to control the power supply relay 230 to operate off, in anticipation of being able to prevent discharge). Thereafter, when the key box 110 of the vehicle is changed to the OFF position or the key is removed from the key box 110 (this case is regarded as the case where the vehicle is parked), the power supply relay 230 is turned off. Operate.

On the other hand, when the power is supplied to the vehicle (when the keybox is switched to the ACC or ON position) or the vehicle is started, the microcomputer 250 receives the power supply relay (regardless of the operation state of the user operation power switch 240). 230 is preferably turned on. As a result, even if the user does not return to the allowable position after operating the user manipulation power switch 240 to the cutoff position, the black box may be able to operate normally.

In this way, in order to determine whether the vehicle is parked or in operation, the state of the key box must be sensed, which may be performed by the ACC power input through the ACC power input unit 270.

Next, the ACC power input unit 270 provided in the always-on power supply device 200 according to the present invention is connected to any part of the ACC power terminal of the key box 110 or the wiring to which the ACC power supply is connected, so that the key box is connected to the ACC power input device 270. In case of ACC position, receive ACC power. The input ACC power supply is connected to the microcomputer 250, and the microcomputer 250 monitors the on / off of the ACC power or the voltage value of the ACC power.

When the ACC power is turned on and the output voltage exceeds an arbitrary reference value, the vehicle may be operated by the user, the key box may be switched to the ON position, or the vehicle may be considered to be in operation. In this case, the microcomputer 250 automatically releases the state in which the user manipulation power switch 240 is operated to the cutoff position to operate the power supply relay 230 in an off state, and operates the power supply relay 230 in an on state. It outputs a control signal for

Thereafter, if the vehicle is parked again after driving, the microcomputer 250 operates the power supply relay 230 to be turned off since the user manipulation power switch 240 is still in the cutoff state.

In the always-on power supply device provided with the ACC power input unit 270, the case where the ACC power is not input may be determined as the parked state.

On the other hand, when the vehicle is running may be configured to output the ACC power to the power output unit ().

The first operation switch 280 is a switch for arbitrarily changing the reference voltage value in the low voltage interrupt function provided by the microcomputer 250. The first operation switch 280 can be applied to any kind such as one or a plurality of dip switches, button switches, and dials (the same applies to the second operation switch).

In general, a vehicle uses a 12V battery or a 24V battery, depending on the type. Therefore, it is necessary to apply the reference value of the low voltage cutoff to, for example, 11.6V, 22.8V, or the like. Also in a vehicle to which the same 12V battery is applied, the reference value can be stepped to, for example, 11.6V, 11.8V, or the like.

The second operation switch 290 is for the user to set an arbitrary time. The set time represents an allowable time for the constant power supply according to the present invention to output the constant power while the vehicle is parked. To this end, the always-on power supply apparatus according to the present invention includes a timer (not shown) that can adjust the timing of timing, and the microcomputer 250 is configured to detect whether the timer has completed timing. When the microcomputer 250 detects that the timer has completed the timing of the preset time, the microcomputer 250 outputs a control signal for turning off the power supply relay 230.

The timer preferably starts timing of a set time only in a state where the vehicle is parked.

On the other hand, even while the timer is timing the set time, the voltage of the battery 100 can be continuously monitored, even if the timer has not completed the timing of the set time, if the voltage of the battery is lower than the reference value, the microcomputer 250 May immediately turn off the power supply relay 230.

The data connector 255 is connected to the microcomputer 250 and receives data to modify or update the microcomputer control program from the outside. By using the data connector 255, the user can arbitrarily modify the control program of the microcomputer, thereby making it possible to correct an error of the control program input during the initial design, and to provide various other functions. This can be improved.

3 is a flowchart illustrating an operation of a regular power supply device having a user operation power switch according to an exemplary embodiment of the present invention.

First, the continuous power supply according to the present invention receives the constant power and the ACC power of the vehicle, and outputs the constant power to an external device such as a black box (S10), by detecting the case that the ACC power is cut off If it is confirmed that the vehicle is parked (S12), the microcomputer checks the current state of the user operation power switch (S14).

If the user operation power switch is set to the cutoff position (S16), the microcomputer of the always-on power supply device turns off the power supply relay to cut off the constant power supply to the external device (S18).

On the other hand, if the user operation power switch is not in the cutoff position (allowed position) (S16), the microcomputer outputs the power input to the power output unit at the same time and monitors the voltage of the power input at the same time (S32). When the monitored voltage exceeds the reference voltage set in advance by the first operation switch or the like (S34), the charge of the battery of the vehicle is regarded as sufficient and the output of the constant power is continued.

Then, it is checked whether the timer is set and monitors whether the timer has completed the timing of the time set by the second operation switch or the like (S36). When the timer is completed, the power supply relay is turned off to cut off the regular power supply to the external device (S18). If the timer has not completed, the flow returns to step S12 to repeat the state check of the user operation power switch.

On the other hand, when the power supply relay is turned off, the microcomputer monitors whether the ACC power is input to the ACC power input unit (S20, S22). If the voltage of the ACC power supply is lower than the preset reference value, the power supply relay is kept in the OFF state to maintain the interruption state of the constant power output (S24), and the process returns to step S20 to perform the above-described ACC power monitoring process. Repeat.

If it is detected that the voltage of the ACC power exceeds the reference value, the user operates the key box to determine that the ACC power is input and the vehicle wants to start driving, and the power supply relay is turned on to supply power at all times. (S26). When the power is always supplied, the process returns to step S12 to determine whether the vehicle is in a parking state.

4 and 5 are a portion of the instruction manual of the always-on power supply according to an embodiment of the present invention. In Fig. 4, the user operation power switch of the present invention is denoted as "multi boot switch", and the first operation switch and the second operation switch are denoted as "setting switch". Further, the first and second setting switches correspond to the above-mentioned first operation switch, and the third to fifth setting switches correspond to the above-mentioned second operation switch.

Multi-boot : If the multi-boot switch (user-operated power switch) is set to on (allowed position), the black box will be powered on even when the vehicle is turned off until the constant power is cut off by the low voltage and timer settings. Continue. Conversely, if the multi-boot switch is set to OFF (blocking position), the vehicle will be powered off when the vehicle is turned off, and only when the vehicle is turned on (or when the keybox is changed to the ACC position). Automatic power up starts.

Voltage setting (low voltage cutoff setting) : The setting of the low voltage breaking function is made by using the first and second switches (first operation switch) among the setting switches. When the low voltage shut-off function is set, the vehicle is in the standby state of the low voltage shut-off function when the vehicle is turned on, and the battery voltage is periodically checked when the vehicle is turned off. When the battery voltage falls below the set value, the power supply to the black box is cut off to prevent vehicle battery discharge.

Timer setting : Timer setting is done by using switch 3 ~ 5 (second operation switch) among setting switches. The timer setting maintains power supply to the black box until the set time, and cuts off the power supply after the set time has elapsed. The timer function is configured to operate only when the vehicle is turned off, and the timing operation in progress is released when the vehicle is turned on.

Figure 5 shows the main body connection of the power supply. The main body connection unit corresponds to the above-described continuous power input unit, power output unit, and ACC power input unit configured as one connector. The cable connector ⑦ may be connected to the main body connecting portion. The cable connector ⑦ includes a wiring ③ connected to the ACC power supply to function as an ACC power input unit, a wiring ④ connected to a constant power supply (BATT) to function as a constant power input unit, and a wiring ⑤ connected to a ground (GND); A cigar socket ⑥ for functioning as a power output unit is connected.

According to the constant power supply according to an embodiment of the present invention, when the vehicle is finished driving and parked (or when the ignition is turned off), the power supply is cut off at all times and is automatically maintained when the vehicle starts running. By providing a user-operated power switch that supports the function of initiating supply of power, unnecessary power supply can be cut off for devices that do not need to be driven at all times when the vehicle is parked, thereby minimizing the amount of battery discharge. Will be. In addition, since the power supply is automatically started for the connected external devices when the vehicle intends to start driving, the user may not feel inconvenience in using various external devices.

That is, according to the always-on power supply device according to the present invention, it is possible to control whether to continue recording by supplying power to the black box even after the start of the vehicle is turned off using the user operation power switch, the battery is in a low voltage state Or, even after a set time elapses by automatically cut off the power supply to the black box, it is possible to prevent the discharge of the vehicle battery.

In addition, the continuous power supply apparatus according to another embodiment of the present invention may include a battery capable of supplying power to the connected external device for at least several seconds. According to such a battery, when the vehicle turns the key from ACC to ON, the battery voltage can momentarily become very low and return to the normal voltage by the driving of the starting motor, and the connected external devices are turned off by this sudden drop in voltage. Lights up again.

However, the ability to maintain the voltage of the constant power supply for a few seconds to the always-on power supply, it is possible to cope with such a momentary voltage drop, and to prevent the reboot of the connected external devices.

Claims (4)

A constant power input unit connected to the battery to receive the battery voltage at all times;
A power output unit connected to the constant power input unit and outputting the battery voltage to the connected external device;
A power supply relay disposed between the constant power input unit and the power output unit and selectively turned on or off according to an input control signal to selectively supply the battery voltage to the power output unit;
A user operated power switch operated by a user to block or allow the battery voltage from being supplied to the power output unit from the regular power input unit;
An ACC power input unit connected to a start switch of the vehicle; And
When the vehicle is parked, the battery voltage input to the constant power input unit is monitored to detect that the battery voltage is lowered below a predetermined reference voltage value or to detect that the user operation power switch is operated to a cutoff position. The power supply relay is turned off and the power supply relay is turned on when a voltage equal to or greater than the reference voltage value is detected by the ACC power input unit while monitoring the voltage input to the ACC power input unit while the power supply relay is turned off. And a microcomputer for outputting the control signal to operate the controller. delete The method of claim 1,
And a first operation switch operable by a user to set the reference voltage value. The method of claim 1,
A second operation switch operable by a user to set an arbitrary time; And
And a timer for timing the time set by the second operation switch,
The microcomputer outputs the control signal for operating the power supply relay off when detecting that the timer completes the timing of the time set by the second operation switch. Always-on power supply.

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