WO2014125746A1 - 車両用の電源制御装置 - Google Patents
車両用の電源制御装置 Download PDFInfo
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- WO2014125746A1 WO2014125746A1 PCT/JP2013/084610 JP2013084610W WO2014125746A1 WO 2014125746 A1 WO2014125746 A1 WO 2014125746A1 JP 2013084610 W JP2013084610 W JP 2013084610W WO 2014125746 A1 WO2014125746 A1 WO 2014125746A1
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- WIPO (PCT)
- Prior art keywords
- duty ratio
- load
- power
- value
- power supply
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
- B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
- B60Q1/1415—Dimming circuits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
- G01R21/06—Arrangements for measuring electric power or power factor by measuring current and voltage
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
- G01R21/133—Arrangements for measuring electric power or power factor by using digital technique
- G01R21/1331—Measuring real or reactive component, measuring apparent energy
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources
- H05B39/04—Controlling
- H05B39/041—Controlling the light-intensity of the source
- H05B39/044—Controlling the light-intensity of the source continuously
- H05B39/047—Controlling the light-intensity of the source continuously with pulse width modulation from a DC power source
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/40—The network being an on-board power network, i.e. within a vehicle
- H02J2310/46—The network being an on-board power network, i.e. within a vehicle for ICE-powered road vehicles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
Definitions
- the present invention relates to a power supply control device that controls on / off of a semiconductor switching element interposed between a power supply of a vehicle and a load to control power supply from the power supply to the load.
- power supplied from a power supply to a load is controlled by PWM control of a semiconductor switching element.
- power supply to the left and right headlights of the vehicle is controlled by PWM control with different duty ratios according to differences in route resistance due to differences in harness route lengths.
- JP 2010-537873 A JP 2010-537873 A
- the route resistance of the left and right headlights does not always become a constant value, and varies depending on, for example, changes in the surrounding environment of the headlight, aging of the headlight itself, and the like. Therefore, even if the duty ratio in PWM control during power supply to the left and right headlights is individually set according to the harness route length for each headlight, the left and right headlights are turned on with the same intensity as a result. May not be possible.
- the present invention has been made in view of the above-described circumstances, and an object of the present invention is to supply electric power from a power source to a plurality of loads of a vehicle using PWM control. It is an object of the present invention to provide a power supply control device capable of maintaining the same power supply to each load even when the resistance characteristics of some loads dynamically change.
- a power supply control device for controlling power per unit time supplied from a power supply of a vehicle to a load by PWM control.
- a power data calculation unit that calculates the actual supply power value per unit time of the load for each of a plurality of loads of the vehicle from the current value flowing through the current, the duty ratio thereof, and the power supply voltage, and from the power supply to the load by PWM control.
- a duty ratio correction value calculation unit for calculating the duty ratio of PWM control for matching the actual power supply value to the target power value supplied per unit time for each load, and the duty of PWM control for each load
- a duty ratio control unit that corrects the ratio to the duty ratio determined by the duty ratio determination unit.
- the actual supply power value per unit time actually supplied to the load to which power is supplied from the power supply by PWM control is supplied to the load per unit time.
- the duty ratio of PWM control is set so as to match the power value.
- the duty ratio correction contents in the PWM control of each load can be individually determined by comparing the actual supply power value of each load and the target power value, the actual supply power value is compared with other loads, etc. As compared with determining the correction content of the duty ratio, the correction value of the duty ratio in the PWM control of each load can be detected easily and quickly.
- the power supply control device when supplying power from a power supply to each of a plurality of loads of a vehicle using PWM control, some loads are supplied in the same load. Even if the resistance characteristics of the load change dynamically, the amount of power supplied to each load can be maintained at the same amount of power.
- FIG. 1 is a circuit diagram illustrating a basic configuration of a power supply control device according to an embodiment.
- FIG. 2 is a functional block diagram schematically showing processing performed in the control unit of FIG.
- FIG. 3 is a timing chart showing a procedure when the current detection unit and the duty ratio detection unit in FIG. 2 detect the load passing current and the duty ratio.
- FIG. 4 is a flowchart showing an operation performed for each load in the power supply control device of FIG.
- the power supply control device 1 includes semiconductor relays 131 to 13n based on drive signals DR1 to DRn output by the control unit 11 in response to ON / OFF operations of input switches SW1 to SWn mounted on a vehicle (not shown). Is turned on and off to control the supply of power from the power source B of the vehicle to the loads 31 to 3n.
- each load 31 to 3n is connected to the corresponding semiconductor relay 131 to 13n by a wire harness (not shown), and is assumed to be an electrical component such as a headlight, for example.
- the control unit 11 is configured by a microcomputer, a custom IC, or the like that realizes various processes by executing a program.
- the control unit 11 has a power supply voltage input terminal BATT, input terminals IN1 to INn, output terminals OUT1 to OUTn, and detection current input terminals SI1 to SIn.
- the power supply voltage input terminal BATT is a terminal for monitoring the voltage of the power supply B.
- a voltage value VB obtained by dividing the power supply voltage by the voltage dividing resistors R1 and R2 is input to the power supply voltage input terminal BATT.
- the input terminals IN1 to INn are terminals for monitoring the on / off states of the input switches SW1 to SWn, and switch signals S1 to Sn corresponding to the on / off states of the input switches SW1 to SWn are input.
- the output terminals OUT1 to OUTn respectively output drive signals DR1 to DRn for driving the semiconductor relays 131 to 13n on and off when the switch signals S1 to Sn of the corresponding input terminals IN1 to INn are on.
- Current detection signals I1 to In from the corresponding semiconductor relays 131 to 13n are input to the detection current input terminals SI1 to SIn, respectively.
- FIG. 2 is a block diagram schematically showing processing executed inside the control unit 11 based on signals from the respective terminals of the control unit 11.
- the control unit 11 executes the same process individually for each of the loads 31 to 3n. Therefore, in FIG. 2, the processing executed by the control unit 11 is schematically shown for one load 31 (32 to 3n). Therefore, in FIG. 2, other terminals and input / output signals other than the power supply voltage input terminal BATT are shown by omitting branch numbers 1 to n.
- the control unit 11 executes a program stored in a memory (not shown), thereby causing a power supply voltage detection unit 111, an input determination control unit 112, a PWM duty ratio control unit 113, a current detection unit 114, and a duty ratio detection unit 115.
- a power supply voltage detection unit 111 an input determination control unit 112
- a PWM duty ratio control unit 113 a current detection unit 114
- a duty ratio detection unit 115 Each function of the power data calculation unit 116 and the duty ratio correction value calculation unit 117 is realized.
- the power supply voltage detector 111 detects the terminal voltage of the power supply B (hereinafter referred to as “power supply voltage”) from the voltage value VB input to the power supply voltage input terminal BATT and the voltage dividing ratio of the voltage dividing resistors R1 and R2.
- the power supply voltage data signal indicating the value of the detected power supply voltage is output.
- the input determination control unit 112 determines the on / off state of the input switch SW based on the switch signal S input to the input terminal IN, and outputs the SW input signal when the input switch SW is on.
- the PWM duty ratio control unit 113 outputs the drive signal DR to the output terminal OUT while the SW input signal from the input determination control unit 112 is being input.
- the duty ratio of the drive signal DR is set to an initial value immediately after the input switch SW is turned on, and is thereafter corrected to the duty ratio correction value calculated by the duty ratio correction value calculation unit 117.
- This initial value X 2 is a duty ratio suitable for setting the power value per unit time supplied from the power source B to the load 3 as the target power value.
- the target power value is set for each load 3 and can be stored, for example, in the memory of the control unit 11.
- the initial value of the duty ratio of the drive signal DR is set to 100% (DC drive).
- the current detection unit 114 and the duty ratio detection unit 115 are configured to detect a passing current of the load 3 (load 3) detected by a current sensor circuit (not shown) in the semiconductor relay 13 from the current detection signal I input to the detection current input terminal SI. Current value) and its duty ratio are detected, and a current data signal and a duty ratio signal indicating the detection result are output.
- FIG. 3 is a timing chart showing a procedure when the current detection unit 114 and the duty ratio detection unit 115 detect the passing current of the load 3 and the duty ratio thereof.
- the SW input signal from the input determination control unit 112 shown in the upper part of FIG. 3 is switched from OFF to ON, the power from the power source B is supplied to the load 3 via the semiconductor relay 13 that is ON / OFF driven by PWM control using the drive signal DR. Supplied.
- a current detection signal I corresponding to the current flowing through the load 3 detected by the current sensor circuit of the semiconductor relay 13 is input to the detection current input terminal SI.
- the current detection unit 114 and the duty ratio detection unit 115 sample the current detection signal I at the detection current input terminal SI at the sample timing shown in the lower part of FIG.
- the current detection unit 114 uses the average value of each sampling value in the continuous section (on section) where the level from the rising edge to the falling edge of the current detection signal I is not 0 as the passing current of the load 3 (current value flowing through the load). To detect.
- the duty ratio detection unit 115 identifies the on period and the off period of the current passing through the load 3 of the current detection signal I from the rising and falling timings of the current detection signal I, and loads the load from the identified on period and off period. 3 detects the on / off duty ratio of the passing current.
- the duty ratio detection unit 115 may detect the duty ratio of the drive signal DR set by the PWM duty ratio control unit 113 as an on / off duty ratio of the passing current of the load 3.
- the power data calculation unit 116 supplies the load 3 per unit time from the power supply voltage data signal from the power supply voltage detection unit 111 and the current data signal and the duty ratio signal from the current detection unit 114 and the duty ratio detection unit 115.
- the power data calculation unit 116 multiplies the current passing through the load 3 (current value flowing through the load) indicated by the current data signal and the duty ratio signal and the duty ratio to obtain a current time product, The actual supply power value per unit time is calculated by multiplying the power supply voltage indicated by the power supply voltage data signal. Then, the power data calculation unit 116 outputs a power data signal indicating the calculated actual supply power value.
- the duty ratio correction value calculation unit 117 calculates a duty ratio correction value (a correction value of the PWM control duty ratio) of the drive signal DR, and outputs a correction duty ratio signal indicating the calculated correction value.
- the duty ratio correction value of the drive signal DR is obtained by setting the actual supply power value per unit time of the load 3 indicated by the power data signal from the power data calculation unit 116 to the target supply power per unit time corresponding to the load 3 described above. This is intended to match the power value (design value).
- the load 3 is a valve with a rated power of 60 W
- the PWM duty ratio control unit 113 When the correction duty ratio signal is input from the duty ratio correction value calculation unit 117 while the drive signal DR is being output to the output terminal OUT, the PWM duty ratio control unit 113 outputs the drive signal DR to the output terminal OUT. Is corrected to the duty ratio correction value of the drive signal DR indicated by the correction duty ratio signal.
- step S1 it is confirmed from the signal level of the switch signal S whether or not the input switch SW is on (step S1). If the input switch SW is not on (NO in step S1), the function of PWM control of power supply to the load 3 is stopped (step S3), the output of the drive signal DR is stopped, and the semiconductor relay 13 is turned off (step S3). S5), a series of operations are terminated.
- step S7 the power supply voltage detection unit 111 detects the power supply voltage (0 to 20V) (step S7).
- the detected power supply voltage is notified to the PWM duty ratio control unit 113 and the power data calculation unit 116 by a power supply voltage data signal.
- step S9 it is confirmed whether or not the power supply voltage is equal to or lower than the reference voltage value Vref (step S9).
- the reference voltage value Vref is 13.5V.
- the function of PWM control of the power supply to the load 3 is stopped (step S11), and the drive signal with a duty ratio of 100 ⁇ % After outputting DR and driving the semiconductor relay 13 in DC (step S13), a series of operations is terminated.
- the PWM duty ratio control unit 113 calculates (duty ratio calculation) the initial value of the duty ratio of the drive signal DR (step S15). And it is confirmed whether the current detection part 114 detected the ON area of the current detection signal I (the power supply value was detected) (step S17).
- step S17 If the ON section of the current detection signal I is not detected (NO in step S17), the process proceeds to step S35.
- the current detection unit 114 detects the passing current of the load 3, and generates a current data signal (step S19).
- step S21 it is confirmed whether the duty ratio detection unit 115 has detected the duty ratio of the current detection signal I (whether the duty ratio has been detected) (step S21). If the duty ratio of the current detection signal I is not detected (NO in step S21), the process proceeds to step S35.
- the power data calculation unit 116 calculates power data indicating the actual supply power value per unit time of the load 3 (step S23).
- step S25 whether or not the actual supply power value per unit time indicated by the calculated power data (the actual supply power value of the load 3) is equal to the target power value (design value) of the supply power per unit time for the load 3 is determined. Confirm (step S25). If equal (YES in step S25), the PWM duty ratio control unit 113 sets the same duty ratio as the current duty ratio calculated by the duty ratio correction value calculation unit 117 as a corrected duty ratio (step S27). ), And proceeds to step S35.
- step S25 If the actual supply power value (power data) is not equal to the target power value (design value) (NO in step S25), whether or not the actual supply power value (power data) exceeds the target power value (design value). Is confirmed (step S29). If it has exceeded (YES in step S29), after the duty ratio with a value reduced from the current value calculated by the duty ratio correction value calculation unit 117 is set as a corrected duty ratio by the PWM duty ratio control unit 113 (Step S31), the process proceeds to Step S35.
- step S29 when the actual supply power value (power data) does not exceed the target power value (design value) (NO in step S29), the duty ratio is increased from the current value calculated by the duty ratio correction value calculation unit 117. Is set as the corrected duty ratio by the PWM duty ratio control unit 113 (step S33), and then the process proceeds to step S35.
- the corrected duty ratio value set in step S31 and step S33 can be determined by the above-described procedure.
- step S35 the power supply to the load 3 is PWM-controlled, and the drive signal DR having the duty ratio set in any of step S15, step S27, step S31, or step S33 is output to drive the semiconductor relay 13 by PWM control. Later (step S37), the series of operations is terminated.
- the PWM control is performed so that the actual supply power value of the load 3 obtained from the current value actually flowing through each load 3 and its duty ratio matches the target power value for the load 3.
- the duty ratio control unit 113 sets the duty ratio of PWM control.
- the resistance characteristics of the load 3 and the wire harness (not shown) connected to the load 3 fluctuate due to aging and environmental changes. Even if it exists, the duty ratio of PWM control is corrected according to the resistance characteristics after fluctuation, and the state where the power of the target power value is supplied per unit time to all the loads 3 (31 to 3n) is maintained. can do.
- the load 3 is the left and right headlights of the vehicle
- dynamic changes such as aging and environmental changes that occur individually in each harness from the power source B to each headlight are performed. Even if there is a difference in resistance characteristic change, the power supplied to each headlight can be made the same. As a result, the luminances of the left and right headlights can be made to coincide with each other with high accuracy.
- the duty ratio correction contents in the PWM control of each load 3 (31 to 3n) by comparing the actual supply power value of each load 3 (31 to 3n) and the target power value. Can be determined individually. For this reason, the duty ratio in the PWM control of each load 3 (31 to 3n) is determined as compared with the case where the correction content of the duty ratio is determined by comparing the actual supply power value with other loads 3 (31 to 3n). This correction value can be detected easily and quickly.
- the semiconductor relay 13 (131 to 13n) is used.
- the power supply to the load 3 (31 to 3n) is PWM controlled using a semiconductor switching element other than the semiconductor relay 13, such as a power semiconductor switch.
- the present invention is applicable.
- the power supply control device of the present invention is extremely useful when the power per unit time supplied from the power supply of the vehicle to the load is controlled by PWM control.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Direct Current Feeding And Distribution (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Dc-Dc Converters (AREA)
Abstract
Description
Claims (1)
- 車両の電源から負荷に供給される単位時間当たりの電力をPWM制御により制御するための電源制御装置であって、
前記負荷を流れた電流値及びそのデューティ比と前記電源電圧とから、前記負荷の前記単位時間あたりの実供給電力値を、前記車両の複数の負荷毎にそれぞれ算出する電力データ算出部と、
前記PWM制御により前記電源Bから前記負荷に単位時間当たりに供給する目標電力値に前記実供給電力値を一致させるための前記PWM制御のデューティ比を、前記各負荷毎にそれぞれ算出するデューティ比補正値算出部と、
前記各負荷毎に、前記PWM制御のデューティ比を前記デューティ比補正値算出部が算出したデューティ比にそれぞれ補正するデューティ比制御部と
を備えることを特徴とする電源制御装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201380073205.6A CN105189206A (zh) | 2013-02-18 | 2013-12-25 | 车辆用的电源控制装置 |
DE112013006690.4T DE112013006690T5 (de) | 2013-02-18 | 2013-12-25 | Fahrzeugstromversorgungs-Steuervorrichtung |
US14/823,111 US20150343969A1 (en) | 2013-02-18 | 2015-08-11 | Vehicle power supply control device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2013-028822 | 2013-02-18 | ||
JP2013028822A JP6148492B2 (ja) | 2013-02-18 | 2013-02-18 | 車両用電源制御装置 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US14/823,111 Continuation US20150343969A1 (en) | 2013-02-18 | 2015-08-11 | Vehicle power supply control device |
Publications (1)
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WO2014125746A1 true WO2014125746A1 (ja) | 2014-08-21 |
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PCT/JP2013/084610 WO2014125746A1 (ja) | 2013-02-18 | 2013-12-25 | 車両用の電源制御装置 |
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US (1) | US20150343969A1 (ja) |
JP (1) | JP6148492B2 (ja) |
CN (1) | CN105189206A (ja) |
DE (1) | DE112013006690T5 (ja) |
WO (1) | WO2014125746A1 (ja) |
Families Citing this family (5)
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JP6418681B2 (ja) * | 2014-10-31 | 2018-11-07 | 株式会社小糸製作所 | 車両用灯具システム |
CN107425546B (zh) * | 2017-08-25 | 2020-09-29 | 上海蓝瑞电气有限公司 | 精确调整逆变器母线电压从而提高并网效率的方法 |
JP6930363B2 (ja) * | 2017-10-23 | 2021-09-01 | 株式会社デンソー | 駆動装置 |
JP7515331B2 (ja) | 2020-07-22 | 2024-07-12 | スタンレー電気株式会社 | 点灯制御装置、照明装置 |
CN113382495A (zh) * | 2021-05-10 | 2021-09-10 | 马瑞利汽车零部件(芜湖)有限公司 | 可调的用于智能控制灯光的装置 |
Citations (3)
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JP2006131048A (ja) * | 2004-11-04 | 2006-05-25 | Honda Motor Co Ltd | 車両用ヘッドライト点灯制御装置 |
JP2009158291A (ja) * | 2007-12-26 | 2009-07-16 | Momo Alliance Co Ltd | 照明装置 |
JP2010170845A (ja) * | 2009-01-22 | 2010-08-05 | Panasonic Electric Works Co Ltd | 電源装置及びそれを用いた照明器具 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080191626A1 (en) * | 2007-02-08 | 2008-08-14 | Ford Global Technologies, Llc | Lighting system |
JP4840328B2 (ja) * | 2007-10-25 | 2011-12-21 | 住友電装株式会社 | Pwm制御方法及び装置、並びに、調光装置 |
JP5576638B2 (ja) * | 2009-11-06 | 2014-08-20 | パナソニック株式会社 | 点灯装置及びそれを用いた前照灯点灯装置、前照灯、車輌 |
CN102843805B (zh) * | 2011-06-20 | 2016-06-29 | 延锋伟世通汽车电子有限公司 | 一种用于汽车的多路恒流照明电路 |
-
2013
- 2013-02-18 JP JP2013028822A patent/JP6148492B2/ja active Active
- 2013-12-25 DE DE112013006690.4T patent/DE112013006690T5/de not_active Withdrawn
- 2013-12-25 CN CN201380073205.6A patent/CN105189206A/zh active Pending
- 2013-12-25 WO PCT/JP2013/084610 patent/WO2014125746A1/ja active Application Filing
-
2015
- 2015-08-11 US US14/823,111 patent/US20150343969A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006131048A (ja) * | 2004-11-04 | 2006-05-25 | Honda Motor Co Ltd | 車両用ヘッドライト点灯制御装置 |
JP2009158291A (ja) * | 2007-12-26 | 2009-07-16 | Momo Alliance Co Ltd | 照明装置 |
JP2010170845A (ja) * | 2009-01-22 | 2010-08-05 | Panasonic Electric Works Co Ltd | 電源装置及びそれを用いた照明器具 |
Also Published As
Publication number | Publication date |
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US20150343969A1 (en) | 2015-12-03 |
JP2014156215A (ja) | 2014-08-28 |
DE112013006690T5 (de) | 2015-11-05 |
JP6148492B2 (ja) | 2017-06-14 |
CN105189206A (zh) | 2015-12-23 |
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