KR101364856B1 - Charging control device for auxiliary battery of vehicle and the method thereof - Google Patents

Abstract

The present invention relates to a charging control device of a secondary battery for a vehicle comprising the secondary battery which is charged with voltage outputted from generated power or supplies charged voltage to an electronic device. The charging control device of the secondary battery for the vehicle comprises a charging control unit and a protective circuit unit. The charging control unit recognizes turn-on when the voltage is higher than a first charging opening voltage and converts the voltage into charging voltage and current according to the standard of the secondary battery. The protective circuit unit supplies or blocks the charging voltage and current to the secondary battery according to the generation of over-charge and over-discharge of the secondary battery. When the over-charge or the over-discharge is not generated, the secondary battery is charged by receiving the charging voltage and current from the protective circuit unit. [Reference numerals] (10) Generated power; (20) Electronic device; (311) Sensing unit; (312) Switch unit; (313) Setting unit; (314) Voltage (current) conversion unit; (320) Protective circuit unit; (330) Secondary battery; (340) Remaining display unit

Description

Charging control device for auxiliary battery of vehicle and the method

An auxiliary battery charging control device for a vehicle capable of charging an auxiliary battery using a power generation power source, and a charging control method thereof.

In general, due to the development of electronic devices, vehicles are increasingly using electric vehicles, and at the same time, power consumption is also increasing. Among them, the black box is attached to the main battery of the vehicle and the constant power supply in order to monitor the surroundings of the vehicle as well as during the operation of the vehicle.

However, a situation in which the main battery of the vehicle is discharged due to the black box installed in the vehicle, black box manufacturers are using a cutoff voltage to the power supply to prevent the main battery discharge of the vehicle. However, when parking for a long time, it is not enough to prevent the discharge of the starting battery, and there is still a phenomenon that starting does not occur due to the discharge of the starting battery.

Accordingly, users are using a secondary battery in addition to the main battery used for starting. However, since the charging voltage is different depending on the type of battery, the auxiliary battery may not be fully charged in many cases, and thus the use time of the auxiliary battery may not be used as much as the actual capacity.

Republic of Korea Patent No. 10-1186228 (Invention name: Apparatus and method for shutting off the vehicle at all times) Republic of Korea Patent Publication No. 2007-0018302 (Invention: Vehicle charging system using a secondary battery and its control method)

One side of the present invention is a vehicle that can prevent the discharge of the vehicle main battery by charging the auxiliary battery using a generator or a solar module of the vehicle, and driving the electronic device using the auxiliary battery charged when the vehicle is turned off. A secondary battery charge control device and a charge control method thereof.

According to an embodiment of the present invention, the secondary battery charging control device for a vehicle having a secondary battery that is supplied with a voltage output from the power generation power or charged, or supplies a charged charging voltage to the electronic device is a voltage output from the power generation power source Detects that the start-up is higher than the preset primary charging start voltage, the charge control unit for converting the sensed voltage to the charging voltage and current according to the specification of the secondary battery, overcharge or over-discharge of the secondary battery According to whether or not, the protection circuit unit for supplying or blocking the charging voltage and current converted by the charging control unit to the secondary battery, and if the secondary battery does not have an overcharge or over-discharge, the charging voltage converted in the charge control unit from the protection circuit unit and It can be charged with current.

The charging control unit may include a setting unit configured to set values for the primary charging start voltage, the charging cutoff voltage, the secondary charging start voltage, and the charging voltage and current according to the specification of the auxiliary battery according to the type of the vehicle; The voltage (or current) converter converts the voltage output from the power generation power detected as being higher than the predetermined primary charging start voltage is higher or lower than the set charging voltage to the charging voltage and current set by the setting unit. It may include.

In addition, the charging control unit, the switch unit for turning on or off the connection to the power generation power, when it is detected that the voltage output from the power generation power is lower than the set charge cut-off voltage, to turn off the connection to the power generation power It may further include a sensing unit for controlling the switch unit.

In addition, when the switch unit is turned off, the protection circuit unit may supply a charging voltage charged in the auxiliary battery as a driving voltage of the electronic device.

The protection circuit unit may block a voltage supplied from the auxiliary battery to the electronic device when the voltage of the auxiliary battery is less than or equal to a predetermined reference discharge voltage.

The apparatus may further include a remaining amount display unit that displays a remaining amount of the charging voltage charged in the auxiliary battery.

In addition, the auxiliary battery includes at least one cell, in the case of a plurality of cells connected in series or in parallel, the cell may be a secondary battery.

In addition, the power generation may be a generator or a solar module of the vehicle.

On the other hand, according to an embodiment of the present invention, the charging control method of the secondary battery charging control device for a vehicle having a secondary battery for receiving a charge voltage supplied from the power generation power, or supplying the charged voltage to the electronic device is When the voltage output from the power generation power is sensed and compared with the preset primary charging start voltage, when the voltage output from the power generation power is higher than the preset primary charging start voltage, the starter is recognized as being turned on, and the sensed voltage is assisted. The method may include converting into a charging voltage and a current according to a standard of a battery, and supplying or blocking the converted charging voltage and current to a secondary battery according to whether the secondary battery is overcharged or overdischarged.

The method may further include setting values of the primary charging start voltage, the charging breaking voltage, the secondary charging start voltage, and the charging voltage and current according to the specification of the auxiliary battery according to the type of the vehicle. The step may be converted into the set charging voltage and current when the voltage output from the power generation power detected as being higher than the predetermined primary charging start voltage is higher or lower than the charging voltage.

The converting may include turning on or off a switch connected to the power generation power, and when the voltage output from the power generation power is detected to be lower than the set charging cutoff voltage, turn off the connection with the power generation power. The method may further include controlling the switch unit.

The switch unit may further include supplying a charging voltage charged in the auxiliary battery as a driving voltage of the electronic device.

The method may further include blocking a voltage supplied from the auxiliary battery to the electronic device when the voltage of the auxiliary battery is less than or equal to a predetermined reference discharge voltage.

The method may further include displaying a remaining amount of the charging voltage charged in the auxiliary battery.

In addition, the auxiliary battery includes at least one cell, in the case of a plurality of cells connected in series or in parallel, the cell may be a secondary battery.

In addition, the power generation may be a generator or a solar module of the vehicle.

An auxiliary battery charging control apparatus for a vehicle according to an aspect of the present invention charges an auxiliary battery using a generator or a solar module of a vehicle when the vehicle is turned on, and uses an auxiliary battery charged when the vehicle is turned off. By driving, the discharge of the vehicle main battery can be prevented.

In addition, by setting a voltage / current value according to the type and connection of the auxiliary battery, the auxiliary battery can be fully charged regardless of the type of the auxiliary battery.

1 is a schematic control block diagram for explaining the operation of the auxiliary battery charging control device for a vehicle according to an embodiment of the present invention.
2 is a schematic control block diagram of a charging control unit of the auxiliary battery charging control device for a vehicle of FIG.
Figure 3 is a schematic control block diagram for explaining the operation of the secondary battery charging control device for a vehicle according to an embodiment of the present invention.
Figure 4 is a schematic control block diagram for explaining the operation of the secondary battery charging control device for a vehicle according to an embodiment of the present invention.
5 is a flowchart illustrating a charging control method of an auxiliary battery charging control apparatus for a vehicle according to an exemplary embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, configurations and operations of embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, like reference numerals are used to denote like elements in the drawings, even if they are shown in different drawings.

1 is a schematic control block diagram for explaining the operation of the secondary battery charging control device for a vehicle according to an embodiment of the present invention. The charging control device 100 may include a charging control unit 110, a protection circuit unit 120, and an auxiliary battery 130.

The vehicle auxiliary battery charge control apparatus 100 may charge the auxiliary battery 130 by using the power generation power 10, and the auxiliary battery 130 may supply and discharge the charged voltage to the electronic device 20. Here, the power generation power source 10 may be a generator or a solar module of the vehicle.

Here, the solar module is installed on the roof or bonnet of the vehicle and converts solar energy applied from the outside of the vehicle into electrical energy to generate a voltage. Since the photovoltaic module is well known, the following detailed description will be omitted.

In addition, the electronic device 20 may be a heating / cooling device, an air cleaner, a mobile phone charger, a navigation device, a black box, an AV device, or the like, which may be provided in the vehicle. All may be included.

The charging control unit 110 detects a voltage output from the power generation power source 10 and senses whether it is higher than a predetermined primary charging start voltage. In this case, when the detected voltage higher than the primary charging start voltage is higher or lower than the auxiliary battery buffer voltage, the detected voltage may be converted into a charging voltage and a current corresponding to the auxiliary battery 130. Here, the primary charging start voltage may be a starting voltage or a voltage having a predetermined size, and the auxiliary battery buffer voltage refers to a charging voltage according to the standard of the auxiliary battery.

The protection circuit unit 120 may be connected to the auxiliary battery 130 and determine whether to supply the auxiliary battery 130 by determining whether the converted charging voltage and current are overcharged or overdischarged.

When it is determined that the overcharge is not generated from the protection circuit unit 120, the auxiliary battery 130 may be charged by receiving the voltage and current converted by the charge control unit 110.

On the other hand, the charge control unit 110 detects the voltage output from the power generation power source 10 and lowers the preset charging cut-off voltage, and blocks the input of the power generation power source 10. This is to protect the main battery by setting the charging cut-off voltage in case the user uses the electronic device 20 in a state where the user starts off and only the key is turned on.

When the voltage is not supplied from the charge control unit 110, the protection circuit unit 120 supplies the charging voltage precharged to the auxiliary battery 130 to the driving voltage of the connected electronic device 20 to drive the electronic device 20. Can be.

As a result, when the vehicle is turned on, the auxiliary battery 130 may be charged using the power generator 10. On the other hand, when the vehicle is turned off, the electronic device 20 may be driven by supplying the charging voltage charged in the auxiliary battery 130 to the electronic device 20. That is, the secondary battery 130 can be charged and discharged without affecting the main battery of the vehicle.

FIG. 2 is a schematic control block diagram of a charging control unit of the vehicle auxiliary battery charging control device of FIG. 1. The charging control unit 110 may include a detector 111, a switch 112, a setting unit 113, and a voltage (or current) converter 114.

The switch unit 112 turns on or off the connection between the charging control device 100 and the power generator 10. The switch unit 112 turns on the switch when the voltage of the power generation power source 10 sensed by the sensing unit 111 is higher than the primary charging start voltage. The switch unit 112 turns off the switch when the voltage of the power generation power source 10 sensed by the sensing unit 111 is lower than the preset charging cutoff voltage.

The detector 111 may detect the magnitude of the voltage output from the power generator 10. The detector 111 controls the switch 112 to turn on the connection with the generator power source 10 when the voltage output from the generator power source 10 is higher than the primary charging start voltage. The detector 111 controls the switch 112 to turn off the connection with the generator power source 10 when the voltage output from the generator power source 10 is lower than the charge blocking voltage. The detector 111 controls the switch 112 to turn on the connection with the power generator 10 when the voltage output from the power generator 10 is higher than the secondary charging start voltage.

The setting unit 112 receives a value for the charging voltage according to the specification of the auxiliary battery, that is, the auxiliary battery buffer voltage.

When the voltage (or current) converter 114 detects that the voltage output from the generator power source 10 is higher than the primary charging start voltage in the detector 111, the voltage output from the generator power source 10 is supplemented. If the battery buffer voltage is higher or lower than the charge voltage and current set by the setting unit 113 is converted. The voltage (or current) converter 114 may charge the auxiliary battery by supplying the converted charging voltage and current according to the setting value of the setting unit 113 to the auxiliary battery 230 through the protection circuit unit 120. .

Figure 3 is a schematic control block diagram for explaining the operation of the secondary battery charging control device for a vehicle according to an embodiment of the present invention. Meanwhile, the vehicle auxiliary battery charge control apparatus 200 of FIG. 3 may be configured to include a remaining amount display unit 240 in the configuration of FIG. 1.

The auxiliary battery charging control apparatus 200 for a vehicle may include a charging control unit 210, a protection circuit unit 220, an auxiliary battery 230, and a remaining amount display unit 240. Meanwhile, the same configuration as that of FIG. 1 may perform the same functions described with reference to FIG. 1, and thus description thereof will be omitted.

The remaining amount display unit 240 may display the remaining amount of the charging voltage charged in the auxiliary battery 230. The remaining amount display unit 240 may include a plurality of LEDs for displaying the remaining amount and a switch for turning on / off the remaining amount display unit 240.

When the switch of the remaining amount display unit 240 is turned on by the user, the LED may be turned on according to the remaining amount of the charging voltage, and may blink after 1 to 2 seconds. In addition, when five LEDs are provided, when the remaining amount is 20%, one of the five LEDs may be turned on.

Accordingly, the remaining amount of the auxiliary battery 230 can be confirmed, and the user can easily recognize whether the auxiliary battery 230 needs to be charged.

Figure 4 is a schematic control block diagram for explaining the operation of the auxiliary battery charging control device for a vehicle according to an embodiment of the present invention.

The secondary battery charging control device 300 for a vehicle may include a charging control unit 310, a protection circuit unit 320, an auxiliary battery 330, and the remaining amount display unit 340. In addition, the charge controller 310 may include a detector 311, a switch 312, a setting unit 313, and a voltage (or current) converter 314.

The switch unit 312 turns on or off the connection between the charging control device 300 and the power generator 10. The switch unit 312 turns on the switch when the voltage of the generator power source 10 sensed by the detector 311 is higher than the primary charging start voltage. The switch unit 312 turns off the switch when the voltage of the power generation power source 10 is lower than the charge blocking voltage. The switch unit 312 may turn on the switch when the secondary charge is higher than the secondary charge start voltage. Here, the secondary charging start voltage may be a reference voltage for determining whether to recharge after the charging is cut off by the charging cutoff voltage after the primary charging.

The sensing unit 311 senses the voltage output from the power generation power source 10 and compares the preset voltage, i.e., the primary charging start voltage, the charging breaking voltage, and the secondary charging start voltage to turn on / off the switch unit 312. Off can be controlled.

Specifically, the sensing unit 311 controls the switch unit 312 to start charging when the detected voltage output from the power generation power source 10 is greater than or equal to the primary charging start voltage only when the power is on. You can turn it on. On the other hand, if it is determined that the detected voltage is higher or lower than the auxiliary battery buffer voltage, the sensing unit 311 charges the auxiliary battery by converting it to the auxiliary battery buffer voltage, and if the detected voltage is less than the charge interruption voltage switch unit 312 ) To turn off the charging. The detector 311 continuously detects a voltage output from the power generation power source 10 even when charging is interrupted, and resumes charging when a voltage equal to or greater than the secondary charging start voltage is detected.

On the other hand, the auxiliary battery 330 may supply the pre-charged charging voltage as the driving voltage of the electronic device 20, when no voltage is applied from the power generation power source 10 by the switch unit 312. The electronic device 10 may receive a driving voltage through the main battery when the ignition is turned on, and may receive a driving voltage through the auxiliary battery 330 when the ignition is turned off.

Here, the predetermined primary charging start voltage may be set to 13.5V or more to start charging only when the start-up is turned on. Meanwhile, the primary charging start voltage, the secondary battery buffer voltage, the charging break voltage, and the secondary charging start voltage, which are determination criteria of the sensing unit 311, may be set to arbitrary voltage values regardless of the starting voltage through the setting unit 313. Can also be set.

Here, the auxiliary battery buffer voltage may be a charging voltage according to the standard of the secondary battery. In addition, the charge blocking voltage may be a reference for turning on / off the switch of the switch unit 312. In addition, the secondary charging start voltage may be a voltage for determining whether charging starts when recharging.

The setting unit 313 receives values for charging voltage and current of the auxiliary battery 330 used in the vehicle. Here, the secondary battery 330 is a secondary battery capable of charging and discharging, a lithium ion battery, a lithium iron phosphate battery, a nickel-cadmium battery, a nickel-hydrogen battery, a lithium polymer battery may be used. These secondary batteries have different values of charging voltage and current depending on the type. Accordingly, the charging voltage and the current value of the auxiliary battery 330 used through the setting unit 313 can be set, and thus all secondary batteries can be used as the auxiliary battery 330.

In addition, when the auxiliary battery 330 is composed of a plurality of cells, the chargeable voltage and current values are different depending on whether the cells are connected in series or in parallel. Accordingly, values of the charging voltage and the current of the auxiliary battery 330 used through the setting unit 313 may be set.

Generally, the charge voltage of a lithium ion battery is 4.2V, and the charge voltage of a lithium iron phosphate battery is 3.65V. The user sets the number of cells to be used as the auxiliary battery 330 according to the electronic device 20, and sets the value of the charging voltage and current of the auxiliary battery 330 according to the series connection or parallel connection of the cells. Can be set via).

For example, when three lithium ion batteries are connected in series, 12.6 V may be set as a setting value for the voltage of the auxiliary battery 330 through the setting unit 313. In addition, when three lithium ion batteries are connected in parallel, the setting unit 313 may set the current value of 4.2V and three times as a setting value for the voltage and current of the auxiliary battery 330. Here, when the plurality of cells are connected in parallel, the capacity of the auxiliary battery 330 may be increased.

Accordingly, by setting the charge voltage and the current value according to the type and capacity of the secondary battery 330 through the setting unit 313, all kinds of secondary batteries can be used.

The voltage (or current) conversion unit 314 is switched on the switch unit 312, the charging voltage and current of the auxiliary battery 330 set the voltage output from the power generation power source 10 in the setting unit 313 Convert to The voltage (or current) converter 314 may use a general voltage converter and a current converter.

On the other hand, the protection circuit unit 320 is connected to the auxiliary battery 330 and the charging control unit 310, if it is determined that the auxiliary battery 330 is overloaded, it can block the charging voltage and current supplied to the auxiliary battery 330. have. Alternatively, the charging voltage and the current from the auxiliary battery 330 may be blocked from being supplied to the electronic device 20. Here, the overload of the auxiliary battery 330 may be overvoltage, overcurrent, overcharge, overdischarge.

In addition, the protection circuit 320 detects the voltage of each cell of the auxiliary battery 330, and if it is determined that an overload has occurred, the protection circuit unit 320 cuts off the circuit of the protection circuit unit 320 connected to the auxiliary battery 330 to maintain the voltage and current. Supply can be cut off.

In addition, the protection circuit unit 320 may block the output of the voltage from the auxiliary battery 330 when the voltage of the auxiliary battery 330 is less than the predetermined reference discharge voltage at the time of discharge.

The remaining amount display unit 340 may display the remaining amount of the charging voltage charged in the auxiliary battery 330. The remaining amount display unit 340 may include a plurality of LEDs for displaying the remaining amount and a switch for turning on / off the remaining amount display unit 340. When the switch of the remaining amount display unit 340 is turned on by the user, the LED may be turned on according to the remaining amount of the charging voltage, and may blink after 1 to 2 seconds. In addition, when five LEDs are provided, when the remaining amount is 20%, one of the five LEDs may be turned on.

As a result, when the vehicle is started, the charging operation of the auxiliary battery 330 is performed, and the electronic device 20 may be driven using the main battery of the vehicle. In addition, when the vehicle is turned off, the electronic device 20 may be driven by using the charging voltage of the charged auxiliary battery. Accordingly, the electronic device 20, which should always be operated, such as a black box, is driven by using the auxiliary battery 330 at the start-off, thereby preventing the discharge of the main battery.

5 is a flowchart illustrating a charging control method of an auxiliary battery charging control apparatus for a vehicle according to an exemplary embodiment of the present invention.

A power source, that is, a voltage output from a vehicle generator or a solar module is sensed (510).

By comparing the detected voltage with a predetermined primary charging start voltage, it is determined whether the detected voltage is higher than the predetermined primary charging start voltage (515), and if it is high (515: Y), the detected secondary battery has the detected voltage set by the user. Convert to a charging voltage and current of (520). Here, the preset primary charging start voltage may be set to, for example, 13.5 V. When the detected voltage is higher than the primary charging start voltage, it may be determined that the start-up is turned on.

Next, the secondary battery is charged 525 using the converted charging voltage to determine whether the secondary battery is overcharged at step 530, and if not at overcharge (530: N), the voltage output from the power generator 10 is continuously. In operation 531, the controller determines whether the voltage is higher than the preset charging cutoff voltage (532). If the voltage falls below the charging cutoff voltage (532: N), charging is blocked (533).

While the charging is interrupted, it is determined whether the voltage higher than the preset secondary charging start voltage is detected through continuous detection (534), and when the voltage higher than the secondary charging start voltage is detected (534: Y), the detected voltage is again detected. The charging and recharging of the auxiliary battery is repeated by converting the set charging voltage and the current 520.

On the other hand, by determining whether the secondary battery is overcharged or overcharged (530: Y) to block the charge (535).

On the other hand, if the detected voltage is lower than the predetermined primary charging start voltage (13.5V) (515: N), the charging of the secondary battery 230 is blocked (535).

Next, when the secondary battery is discharged in step 540, when overload or overdischarge occurs (545: Y), the charging voltage of the secondary battery is blocked from being supplied to the electronic device (550). Here, the overload may be an overvoltage or an overcurrent of the auxiliary battery.

On the other hand, if there is no overload in step 545 (545: N), step 540 may be performed. As a result, the auxiliary battery performs charging at start-up of the vehicle and discharges at start-off of the vehicle.

Accordingly, an electronic device that must be operated at all times, such as a black box, may be driven by using the auxiliary battery at start-off, and may be driven by using the main battery at start-up. As a result, the secondary battery can be efficiently charged, and discharge of the main battery can be prevented.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood. The embodiments described above are therefore to be considered in all respects as illustrative and not restrictive.

100, 200, 300: vehicle auxiliary battery charging control device
110, 210, 310: charge control unit 111, 311: detection unit
112, 312: switch section 113, 313: setting section
114, 314: voltage (or current) converter 120, 220, 320: protection circuit
130, 230, 330: auxiliary battery 240, 340: remaining display 10: power generation (vehicle generator or solar module)
20: electronic device

Claims (16)

In the secondary battery charging control device for a vehicle provided with a secondary battery for receiving a voltage output from the power generation power or charged, or supplying a charged charging voltage to the electronic device,
The charging control unit detects the voltage output from the power generation power and recognizes that the start-up is turned on when it is higher than a preset primary charging start voltage, and converts the detected voltage into a secondary battery buffer voltage that is a charging voltage according to the specification of the secondary battery. ; And
And a protection circuit unit configured to supply or block the auxiliary battery buffer voltage converted by the charging control unit to the auxiliary battery according to whether the secondary battery is overcharged or overdischarged.
Wherein the charge control unit comprises:
A setting unit configured to set the primary charging start voltage, the charging cutoff voltage, the secondary charging start voltage, and the auxiliary battery buffer voltage according to the type of vehicle; And
And a voltage converter converting the secondary battery buffer voltage set by the setting unit when the voltage output from the power generation power detected as being higher than the primary charging start voltage is higher or lower than the secondary battery buffer voltage. ,
The auxiliary battery charging control apparatus for a vehicle, characterized in that the secondary battery is charged by receiving the voltage converted by the charge control unit from the protection circuit unit, if there is no overcharge or overload occurs. delete The method of claim 1,
Wherein the charge control unit comprises:
A switch unit to turn on or off the connection with the power generation power;
And a sensing unit controlling the switch unit to turn off the connection with the generation power when the voltage output from the power generation power is detected to be lower than the set charging cutoff voltage. Device. The method of claim 3,
The protection circuit unit,
When the switch unit is off, the auxiliary battery charging control device for a vehicle, characterized in that for supplying a charging voltage charged in the auxiliary battery as a driving voltage of the electronic device. 5. The method of claim 4,
The protection circuit unit,
When the voltage of the auxiliary battery is less than the predetermined reference discharge voltage, the secondary battery charging control device for a vehicle, characterized in that to cut off the voltage supplied to the electronic device from the auxiliary battery. The method of claim 1,
And a remaining amount display unit displaying a remaining amount of the charging voltage charged in the auxiliary battery. The method of claim 1,
The auxiliary battery includes at least one cell, in the case of a plurality of cells connected in series or parallel, the secondary battery charging control device for a vehicle, characterized in that the secondary battery. The method of claim 1,
The secondary battery charging control device for a vehicle, characterized in that the generator of the vehicle. In the charging control method of a secondary battery charging control device for a vehicle having a secondary battery that is charged by receiving a voltage output from the power generation power, or supplies the charged charging voltage to the electronic device,
Receiving a primary charging start voltage, a charging interrupting voltage, a secondary charging start voltage, and a secondary battery buffering voltage according to the type of vehicle;
Recognizing that the start-up is turned on when the voltage output from the power generation power is higher than the primary charging start voltage, and converting the voltage output from the power generation power to the auxiliary battery buffer voltage;
And supplying or blocking the converted secondary battery buffer voltage to the secondary battery according to whether the secondary battery is overcharged or overdischarged.
Wherein the converting comprises:
Charging control of a secondary battery charging control device for a vehicle, characterized in that when the voltage output from the power generation power detected as being higher than the primary charging start voltage is higher or lower than the secondary battery buffer voltage converts to the secondary battery buffer voltage. Way. delete 10. The method of claim 9,
Wherein the converting comprises:
Turning on or off a switch unit connected to the generated power source; And
And controlling the switch unit to turn off the connection with the power generation power when it is detected that the voltage output from the power generation power is lower than the charging cutoff voltage. Control method. 12. The method of claim 11,
And when the switch unit is turned off, supplying a charging voltage charged to the auxiliary battery as a driving voltage of the electronic device. 13. The method of claim 12,
And blocking a voltage supplied from the auxiliary battery to the electronic device when the voltage of the auxiliary battery is less than or equal to a predetermined reference discharge voltage. 10. The method of claim 9,
And displaying the remaining amount of the charging voltage charged in the auxiliary battery. 10. The method of claim 9,
The auxiliary battery includes at least one cell, in the case of a plurality of cells connected in series or parallel, the cell is a secondary battery charging control method for a vehicle secondary battery charging control device, characterized in that the secondary battery. The method of claim 9,
Charging control method of the secondary battery charging control device for a vehicle, characterized in that the power generator is a generator of the vehicle.

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