CN214492785U - Vehicle-mounted air purifier and drive control circuit thereof - Google Patents
Vehicle-mounted air purifier and drive control circuit thereof Download PDFInfo
- Publication number
- CN214492785U CN214492785U CN202120602495.0U CN202120602495U CN214492785U CN 214492785 U CN214492785 U CN 214492785U CN 202120602495 U CN202120602495 U CN 202120602495U CN 214492785 U CN214492785 U CN 214492785U
- Authority
- CN
- China
- Prior art keywords
- resistor
- circuit
- control circuit
- capacitor
- fan
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Air-Conditioning For Vehicles (AREA)
Abstract
The utility model relates to a vehicle-mounted air purifier and drive control circuit thereof, include: the device comprises a switch control circuit, a BUCK-BOOST module, a battery detection circuit, a control unit and a drive circuit; the input power supply provides electric energy; the switch control circuit is connected with the input power supply and controls the input or the turn-off of the electric energy according to the control switch; the BUCK-BOOST module is connected with the switch control circuit, and outputs a second power supply signal to the driving circuit after performing voltage rising/reducing processing; the battery detection circuit is connected with the switch control circuit, detects the voltage of the input power supply and outputs a battery voltage sampling signal; the control unit controls the drive circuit to work according to the sampling information. The utility model discloses can promote air purifier drive power supply efficiency, and quiescent current is low, and the reliability is high.
Description
Technical Field
The utility model relates to a technical field of on-vehicle electron, more specifically say, relate to an on-vehicle air purifier and drive control circuit thereof.
Background
The vehicle-mounted air purifier has high requirements on indexes such as efficiency, quiescent current and reliability. The traditional air purifier drive control scheme has low drive efficiency, the low efficiency can cause the temperature in the air purifier system to be too high, the service life of the product is reduced, the quiescent current is large under the standby state, and the electric shortage of the 12V battery of the automobile can be caused. Therefore, there is a need to improve the efficiency and quiescent current of an on-board air cleaner.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, provide an on-vehicle air purifier and drive control circuit thereof.
The utility model provides a technical scheme that its technical problem adopted is: a vehicle-mounted air cleaner drive control circuit is constructed, including: the device comprises a switch control circuit, a BUCK-BOOST module, a battery detection circuit, a control unit and a drive circuit;
the switch control circuit is connected with the input power supply, receives the voltage of the input power supply and controls the input or the turn-off of the electric energy according to the control switch;
the BUCK-BOOST module is connected with the switch control circuit, receives the electric energy transmitted by the switch control circuit, performs voltage rising/reducing processing on the electric energy, and outputs a second power supply signal to the driving circuit;
the battery detection circuit is connected with the switch control circuit, detects the voltage of the input power supply and outputs a battery voltage sampling signal to the control unit;
the control unit is respectively connected with the battery detection circuit and the driving circuit and is used for controlling the driving circuit to work according to sampling information.
Vehicle-mounted air purifier drive control circuit, still include: a BOOST module;
the BOOST module is connected with the switch control circuit, receives the electric energy transmitted by the switch control circuit, performs BOOST processing on the electric energy, and outputs a first power supply signal to the LED load.
In the drive control circuit of the vehicle-mounted air purifier, the drive control circuit further comprises: an input anti-reverse circuit for performing an input anti-reverse function;
the input end of the input anti-reverse circuit is connected with the switch control circuit, and the output end of the input anti-reverse circuit is respectively connected with the BOOST module, the battery detection circuit and the BUCK-BOOST module.
In the drive control circuit of the vehicle-mounted air purifier, the drive circuit includes: a plasma drive control circuit;
the input end of the plasma drive control circuit is connected with the control unit, the output end of the plasma drive control circuit is connected with the plasma air purifier, and the power supply end of the plasma drive control circuit is connected with the BUCK-BOOST module.
In the drive control circuit of the vehicle-mounted air purifier, the drive circuit further includes: a fan drive adjustment circuit;
the input end of the fan driving adjusting circuit is connected with the control unit, the output end of the fan driving adjusting circuit is connected with the fan, and the power supply end of the fan driving adjusting circuit is connected with the BUCK-BOOST module.
In the drive control circuit of the vehicle-mounted air purifier, the drive control circuit further comprises: the temperature detection circuit is connected with the control unit;
the temperature detection circuit is used for detecting the ambient temperature and outputting a temperature detection signal to the control unit.
In the drive control circuit of the vehicle-mounted air purifier, the drive control circuit further comprises: the fan adjusting sampling circuit is connected with the control unit;
the fan adjusting and sampling circuit is used for receiving a fan adjusting input signal and outputting a fan adjusting and sampling signal to the control unit;
the control unit receives the fan adjusting sampling signal and outputs a fan control signal to the fan driving adjusting circuit according to the fan adjusting sampling signal so as to control the fan driving adjusting circuit to output the fan adjusting signal to adjust the fan.
In the drive control circuit of the vehicle-mounted air purifier, the drive control circuit further comprises: the brightness adjusting and sampling circuit is connected with the control unit;
the brightness adjusting and sampling circuit is used for receiving a brightness adjusting input signal and outputting a brightness adjusting and sampling signal according to the brightness adjusting input signal;
the control unit receives the brightness adjustment sampling signal and outputs a brightness control signal to the BOOST module according to the brightness adjustment sampling signal so as to control the BOOST module to adjust the first power supply signal according to the brightness control signal.
In the drive control circuit of the vehicle-mounted air purifier, the switch control circuit includes: a ninth resistor, a twelfth resistor, an eighth capacitor, a ninth diode, a fifth MOS (metal oxide semiconductor) transistor, a twenty-first resistor, a first MOS transistor, a fifty-fourth capacitor and a second resistor;
a first end of the ninth resistor is connected with the control switch, a second end of the ninth resistor is connected with a grid electrode of the fifth MOS transistor, a first end of the eighth capacitor is connected with the grid electrode of the fifth MOS transistor, a second end of the eighth capacitor is grounded, the twelfth resistor is connected with the eighth capacitor in parallel, an anode of the ninth diode is connected with a source electrode of the fifth MOS transistor, a cathode of the ninth diode is grounded, and a drain of the fifth MOS transistor is connected with the grid electrode of the first MOS transistor through the twenty-first resistor;
the first end of the second resistor is connected with the source electrode of the first MOS tube, the second end of the second resistor is connected with the grid electrode of the first MOS tube, the fifty-fourth capacitor is connected with the second resistor in parallel, the source electrode of the first MOS tube is connected with the positive end of the input power supply, and the drain electrode of the first MOS tube is connected with the input end of the input anti-reverse circuit.
In the drive control circuit of the vehicle-mounted air purifier, the input anti-reverse circuit includes: the second MOS tube, the first resistor, the third capacitor and the first capacitor;
the second MOS tube is used as the input end of the input anti-reverse circuit and is connected with the drain electrode of the first MOS tube, and the source electrode of the second MOS tube outputs the voltage of the input power supply; the first end of the first resistor is connected with the negative end of the input power supply, the second end of the first resistor is connected with the grid electrode of the second MOS tube and the second end of the third resistor, the first end of the third resistor is connected with the source electrode of the second MOS tube, and the first capacitor is connected with the third resistor in parallel.
In the drive control circuit of the vehicle-mounted air purifier, the drive control circuit further comprises: and the filter circuit is arranged at the output end of the input anti-reversion circuit and is used for filtering the electric energy transmitted by the input anti-reversion circuit.
In the drive control circuit of the vehicle-mounted air purifier, the filter circuit includes: the filter capacitor, the second capacitor and the third capacitor;
the positive end of the filter capacitor is connected with the source electrode of the second MOS tube, the negative end of the filter capacitor is connected with the negative end of the input power supply, and the second capacitor and the third capacitor are sequentially connected with the filter capacitor in parallel.
In the drive control circuit of the vehicle-mounted air purifier, the plasma drive control circuit includes: the eighth MOS tube, the twenty-fifth resistor, the ninth MOS tube, the twenty-eighth resistor, the thirty-sixth capacitor, the fifth inductor and the seventh TVS tube;
a source electrode of the eighth MOS tube and a first end of the twenty-fifth resistor are connected to the BUCK-BOOST module to access the second power supply signal;
a grid electrode of the eighth MOS tube is connected with a second end of the twenty-fifth resistor and a drain electrode of the ninth MOS tube, and the drain electrode of the eighth MOS tube outputs a first power supply voltage to the plasma purifier; the source of the ninth MOS transistor is grounded, the gate of the ninth MOS transistor is connected to the plasma control end of the control unit through the twenty-eighth resistor, the first end of the thirty-fifth resistor is connected to the gate of the ninth MOS transistor, the second end of the thirty-fifth resistor is grounded, and the twenty-first capacitor is connected in parallel with the thirty-fifth resistor;
the first end of the fifth inductor is connected with the drain electrode of the eighth MOS transistor, the second end of the fifth inductor is grounded, the third end of the fifth inductor is connected with the first end of the seventh TVS transistor and is connected to the positive input end of the plasma purifier, and the fourth end of the fifth inductor is connected with the second end of the seventh TVS transistor and is connected to the negative input end of the plasma purifier.
In the drive control circuit of the vehicle-mounted air purifier, the fan drive adjusting circuit includes: a thirty-fourth resistor, a tenth MOS transistor, an eleventh MOS transistor, a thirty-sixth resistor, a thirty-seventh resistor, a twenty-seventh capacitor, a sixth inductor, and an eighth TVS transistor;
a source electrode of the tenth MOS tube and a first end of the thirty-fourth resistor are connected and connected to the BUCK-BOOST module so as to access the second power supply signal;
the grid electrode of the tenth MOS tube is connected with the second end of the thirty-fourth resistor and the drain electrode of the eleventh MOS tube, and the drain electrode of the tenth MOS tube outputs a second power supply voltage to the fan; the source of the eleventh MOS tube is grounded, the gate of the eleventh MOS tube is connected with the fan control end of the control unit through the thirty-sixth resistor, the first end of the thirty-seventh resistor is connected with the gate of the eleventh MOS tube, the second end of the thirty-seventh resistor is grounded, and the twenty-seventh capacitor is connected in parallel with the thirty-seventh resistor;
a first end of the sixth inductor is connected to the drain of the tenth MOS transistor, a second end of the sixth inductor is grounded, a third end of the sixth inductor is connected to the first end of the eighth TVS transistor and to the positive input end of the fan, and a fourth end of the sixth inductor is connected to the second end of the eighth TVS transistor and to the negative input end of the fan.
In the drive control circuit of the vehicle-mounted air purifier, the battery detection circuit includes: a forty-second resistor, a forty-third resistor, a fifth diode, a forty-fourth resistor, and a forty-fourth capacitor;
the first end of the forty-second resistor is connected with the positive end of the input power supply, the second end of the forty-second resistor is connected with the first end of the forty-third resistor and the cathode of the fifth diode, the anode of the fifth diode is grounded, the second end of the forty-third resistor is connected with the battery detection end of the control unit, the second end of the forty-third resistor is grounded through the forty-fourth resistor, and the forty-capacitor is connected with the forty-fourth resistor in parallel.
In the drive control circuit of the vehicle-mounted air purifier, the temperature detection circuit includes: sixty-eight resistors, sixty-nine resistors, a temperature sensor, a seventy resistor, and a fifty-third capacitor;
a first end of the sixty-eight resistor is connected with a high level, a second end of the sixty-eight resistor is connected with a first end of the sixty-nine resistor and a first end of the temperature sensor, a second end of the sixty-nine resistor is connected with a temperature detection end of the control unit, a second end of the temperature sensor is grounded, the seventy resistor is connected with the temperature sensor in parallel, a first end of the fifty-third capacitor is connected with a second end of the sixty-nine resistor, and a second end of the fifty-third capacitor is grounded.
In the drive control circuit of the vehicle-mounted air purifier, the fan adjusting and sampling circuit includes: a fifty-third resistor, a seventy-first resistor, a seventy-second resistor, a seventy-third resistor, a fifty-fourth resistor, a fifth resistor, a forty-seventh capacitor, and a tenth TVS tube;
a first end of the fifty-third resistor is connected to a fifth pin of a fan adjustment button connector, a second end of the fifty-third resistor is connected to a first end of the seventy-first resistor, a first end of the seventy-first resistor is connected to a fourth pin of the fan adjustment button connector, a second end of the seventy-first resistor is connected to a first end of the seventy-second resistor, a first end of the seventy-second resistor is connected to a third pin of the fan adjustment button connector, a second end of the seventy-second resistor is connected to a first end of the seventy-third resistor, a first end of the seventy-third resistor is connected to a second pin of the fan adjustment button connector, a second end of the seventy-third resistor is connected to a second end of the fifty-fourth resistor and a first end of the tenth TVS tube, and a first end of the fifty-fourth resistor is connected to a high level, the first end of the tenth TVS pipe is further connected with the first pin of the fan adjusting button connector, the second end of the tenth TVS pipe is grounded, the first end of the fifth resistor is connected with the first pin of the fan adjusting button connector, the second end of the fifth resistor is connected with the fan adjusting sampling detection end of the control unit, and the second end of the fifth resistor is grounded through the forty-seventh capacitor.
On-vehicle air purifier drive control circuit in, adjustting of the lighteness sampling circuit includes: a sixth resistor, a seventh resistor, an eighth resistor, a tenth resistor, a fourth resistor, an eleventh resistor, a first TVS tube and a fourth capacitor;
a first end of the sixth resistor is connected to a fifth pin of a brightness adjustment button connector, a second end of the sixth resistor is connected to a first end of the seventh resistor, a first end of the seventh resistor is connected to a fourth pin of the brightness adjustment button connector, a second end of the seventh resistor is connected to a first end of the eighth resistor, a first end of the eighth resistor is connected to a third pin of the brightness adjustment button connector, a second end of the eighth resistor is connected to a first end of the tenth resistor, a first end of the tenth resistor is connected to a second pin of the brightness adjustment button connector, a second end of the tenth resistor is connected to a second end of the fourth resistor and a first end of the first TVS tube, a first end of the fourth resistor is connected to a high level, and a first end of the first TVS tube is further connected to the first pin of the brightness adjustment button connector, the second end of the first TVS tube is grounded, the first end of the eleventh resistor is connected with the first pin of the brightness adjusting button connector, the second end of the eleventh resistor is connected with the fan adjusting sampling detection end of the control unit, and the second end of the eleventh resistor is grounded through the fourth capacitor.
The utility model also provides a vehicle-mounted air purifier, including above vehicle-mounted air purifier drive control circuit.
Implement the utility model discloses a vehicle-mounted air purifier drive control circuit has following beneficial effect: the method comprises the following steps: the device comprises an input power supply, a switch control circuit, a BOOST module, a BUCK-BOOST module, a battery detection circuit, a control unit and a drive circuit; the input power supply provides electric energy; the switch control circuit is connected with the input power supply and controls the input or the turn-off of the electric energy according to the control switch; the BOOST boosting module is connected with the switch control circuit, and outputs a first power supply signal to the LED load after boosting; the BUCK-BOOST module is connected with the switch control circuit, and outputs a second power supply signal to the driving circuit after performing voltage rising/reducing processing; the battery detection circuit is connected with the switch control circuit, detects the voltage of the input power supply and outputs a battery voltage sampling signal; and the control unit controls the drive circuit and/or the BOOST module to work according to the sampling information. The utility model discloses an adopt BOOST BOOST module and BUCK-BOOST module can effectively promote air purifier drive power supply efficiency, moreover, after control switch closes, the control unit can turn off and enter the dormant state with the whole shutoff of back level drive, and it is low to effectively reduce quiescent current, and the reliability is high.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a schematic block diagram of a driving control circuit of a vehicle-mounted air purifier provided by an embodiment of the present invention;
fig. 2 is a circuit diagram of the switch control circuit, the input anti-reverse circuit and the filter circuit of the present invention;
fig. 3 is a circuit diagram of the plasma driving control circuit of the present invention;
fig. 4 is a circuit diagram of the fan driving adjustment circuit of the present invention;
fig. 5 is a circuit diagram of the battery detection circuit and the temperature detection circuit of the present invention;
fig. 6 is a circuit diagram of the control unit of the present invention;
fig. 7 is a circuit diagram of the fan regulation sampling circuit of the present invention;
fig. 8 is a circuit diagram of the brightness adjustment sampling circuit of the present invention.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a schematic block diagram of a driving control circuit of an on-vehicle air purifier provided by the present invention.
As shown in fig. 1, the driving control circuit of the vehicle-mounted air cleaner includes: the circuit comprises a switch control circuit 102, a BOOST module 104, a BUCK-BOOST module 105, a battery detection circuit 106, a control unit 107 and a drive circuit.
The switch control circuit 102 is connected to the input power source 101, receives power supplied from the input power source 101, and controls power input or off according to the control switch 111. Specifically, the control switch 111 may be manually controlled by a user, and when the switch needs to be turned off, the control switch 111 is switched to off, and the switch control circuit 102 receives a turn-off signal, that is, turns off the electric energy input of the input power supply 101; when the starting is required, the control switch 111 is switched on, and the switch control circuit 102 receives the starting signal, namely, the power input of the input power source 101 is switched on. Wherein the input power source 101 is used to provide electrical energy. Alternatively, the input power 101 may be implemented using a 12V battery.
The BOOST module 104 is connected to the switch control circuit 102, receives the electric energy transmitted by the switch control circuit 102, performs BOOST processing, and outputs a first power supply signal to the LED load. Specifically, the BOOST module 104 outputs a first power supply signal to the LED load to supply power to the LED load after performing BOOST processing on the power output by the input power 101. Optionally, the BOOST module 104 may adopt the existing BOOST module 104, and the present invention is not limited in particular. The BOOST module 104 may be controlled by an LED constant current control chip.
The BUCK-BOOST module 105 is connected to the switch control circuit 102, receives the electric energy transmitted by the switch control circuit 102, performs voltage boosting/reducing processing, and outputs a second power supply signal to the driving circuit. Specifically, the BUCK-BOOST module 105 performs voltage boosting or voltage dropping on the power output by the input power 101, and outputs a second power supply signal to the driving circuit to supply power to the driving circuit. Optionally, the BUCK-BOOST module 105 may adopt an existing BUCK-BOOST module 105, and the present invention is not limited in particular. Wherein, this BUCK-BOOST module 105 can be controlled by control chip, and this control chip is the chip that conventional BOOST processing/step-down were realized to steerable this BUCK-BOOST module 105, the utility model discloses do not do specifically and restrict.
The battery detection circuit 106 is connected to the switch control circuit 102, detects the power supplied from the input power source 101, and outputs a battery voltage sampling signal to the control unit 107. The battery detection circuit 106 can detect the power input to the power source 101, i.e. whether there is power input and the change of the electrical signal. Of course, it is understood that in some other embodiments, the battery detection circuit 106 may also detect the current of the input power 101 and output a corresponding battery current sampling signal to the control unit 107, so as to detect the power condition of the input power 101 through the detected battery current sampling signal.
The control unit 107 is respectively connected with the battery detection circuit 106, the BOOST module and the driving circuit, and is configured to output a shutdown signal to shut down the subsequent circuit according to the battery detection signal when the switch control circuit 102 is shut down; the control unit 107 also outputs a control signal to control the operation of the driving circuit.
The utility model discloses an adopt BOOST module 104 and BUCK-BOOST module 105, but can ensure input power 101 fast switching, improve on-vehicle air purifier's efficiency. Further, when the power supply needs to be turned off or put to sleep, the user controls the control switch 111 to be switched off, the battery detection circuit 106 detects a turn-off signal and sends the turn-off signal to the control unit 107, and the control unit 107 cuts off all the rear-stage drives and the control unit 107 enters a sleep state after receiving the turn-off signal, so that the quiescent current is effectively reduced.
Further, in some embodiments, the in-vehicle air cleaner drive control circuit further includes: an input anti-reverse circuit 103 for performing an input anti-reverse function.
The input end of the input anti-reverse circuit 103 is connected with the switch control circuit 102, and the output end of the input anti-reverse circuit 103 is respectively connected with the BOOST module 104, the battery detection circuit 106 and the BUCK-BOOST module 105.
In some embodiments, the driving circuit includes: the plasma drives the control circuit 112.
The input end of the plasma drive control circuit 112 is connected with the control unit 107, the output end of the plasma drive control circuit 112 is connected with the plasma air purifier, and the power supply end of the plasma drive control circuit 112 is connected with the BUCK-BOOST module 105.
Further, the driving circuit further includes: the fan drives the adjusting circuit 113.
The input end of the fan driving adjusting circuit 113 is connected with the control unit 107, the output end of the fan driving adjusting circuit 113 is connected with the fan, and the power supply end of the fan driving adjusting circuit 113 is connected with the BUCK-BOOST module 105.
Further, in some embodiments, the in-vehicle air cleaner drive control circuit further includes: a temperature detection circuit 108 connected to the control unit 107; the temperature detection circuit 108 is configured to detect an ambient temperature and output a temperature detection signal to the control unit 107.
Further, in some embodiments, the in-vehicle air cleaner drive control circuit further includes: a fan regulation sampling circuit 109 connected to the control unit 107; the fan adjustment sampling circuit 109 is configured to receive a fan adjustment input signal and output a fan adjustment sampling signal to the control unit 107; the control unit 107 receives the fan adjustment sampling signal and outputs a fan control signal to the fan driving adjustment circuit 113 according to the fan adjustment sampling signal, so as to control the fan driving adjustment circuit 113 to output the fan adjustment signal to adjust the fan.
Further, in some embodiments, the in-vehicle air cleaner drive control circuit further includes: a brightness adjustment sampling circuit 110 connected to the control unit 107; the brightness adjustment sampling circuit 110 is configured to receive a brightness adjustment input signal and output a brightness adjustment sampling signal according to the brightness adjustment input signal; the control unit 107 receives the brightness adjustment sampling signal, and outputs a brightness control signal to the BOOST module 104 according to the brightness adjustment sampling signal, so as to control the BOOST module 104 to adjust the first power supply signal according to the brightness control signal.
Further, in some embodiments, the in-vehicle air cleaner drive control circuit further includes: and the filter circuit 114 is arranged at the output end of the input anti-reversion circuit 103 and is used for filtering the electric energy transmitted by the input anti-reversion circuit 103.
The utility model discloses an on-vehicle air purifier drive control circuit adopts BUCK-BOOST module 105 step up the step down scheme and provides plasma drive power to and adopt BOOST BOOST module 104 to provide LED lighting drive, can also be according to adjusting drive fan wind-force grade, and illumination brightness, the control unit 107 can detect the direct current battery voltage through battery detection circuit 106, and carry out temperature protection, further promote the reliability.
It should be noted that, in the embodiment of the present invention, the sampling information includes: battery voltage sampling information, temperature detection information, a fan adjustment sampling signal and a brightness adjustment sampling signal.
Further, the input power source, the LED module, the plasma air purifier and the fan in fig. 1 are all external input and output components.
The following description is made of a specific embodiment of the present invention for a driving control circuit of an air cleaner mounted on a vehicle.
Fig. 2 to 8 are circuit diagrams of an alternative embodiment of a driving control circuit for a vehicle-mounted air purifier according to the present invention.
As shown in fig. 2 to 8, the control unit 107 includes a main control chip U1. The second power supply signal is a +12V voltage signal output by the BUCK-BOOST module 105.
The switch control circuit 102 includes: the circuit comprises a ninth resistor R9, a twelfth resistor R12, an eighth capacitor C8, a ninth diode D9, a fifth MOS transistor Q5, a twenty-first resistor R21, a first MOS transistor Q1, a fifty-fourth capacitor C54 and a second resistor R2.
A first end of the ninth resistor R9 is connected to the control switch 111 (where EN in fig. 2 is an off signal or a start signal output by the control switch 111), a second end of the ninth resistor R9 is connected to a gate of the fifth MOS transistor Q5, a first end of the eighth capacitor C8 is connected to the gate of the fifth MOS transistor Q5, a second end of the eighth capacitor C8 is grounded, the twelfth resistor R12 is connected in parallel to the eighth capacitor C8, an anode of the ninth diode D9 is connected to a source of the fifth MOS transistor Q5, a cathode of the ninth diode D9 is grounded, and a drain of the fifth MOS transistor Q5 is connected to the gate of the first MOS transistor Q1 through the twenty-first resistor R21; the first end of the second resistor R2 is connected with the source of the first MOS transistor Q1, the second end of the second resistor R2 is connected with the gate of the first MOS transistor Q1, the fifty-fourth capacitor C54 is connected with the second resistor R2 in parallel, the source of the first MOS transistor Q1 is connected with the positive end of the input power supply 101, and the drain of the first MOS transistor Q1 is connected with the input end of the input anti-reverse circuit 103.
The input anti-reverse circuit 103 includes: a second MOS transistor Q2, a first resistor R1, a third capacitor C3, and a first capacitor C1.
The input end of the second MOS transistor Q2 serving as the input anti-reverse circuit 103 is connected to the drain of the first MOS transistor Q1, and the source of the second MOS transistor Q2 outputs the electric energy provided by the input power supply 101; the first end of the first resistor R1 is connected with the negative end of the input power supply 101, the second end of the first resistor R1 is connected with the gate of the second MOS transistor Q2 and the second end of the third resistor R3, the first end of the third resistor R3 is connected with the source of the second MOS transistor Q2, and the first capacitor C1 is connected with the third resistor R3 in parallel.
The filter circuit 114 includes: a filter capacitor EC1, a second capacitor C2, and a third capacitor C3.
The positive end of the filter capacitor EC1 is connected with the source electrode of the second MOS transistor Q2, the negative end of the filter capacitor EC1 is connected with the negative end of the input power supply 101, and the second capacitor C2 and the third capacitor C3 are sequentially connected with the filter capacitor EC1 in parallel.
The plasma drive control circuit 112 includes: an eighth MOS transistor Q8, a twenty-fifth resistor R25, a ninth MOS transistor Q9, a twenty-eighth resistor R28, a thirtieth capacitor, a fifth inductor L5, and a seventh TVS transistor D7.
The source electrode of the eighth MOS transistor Q8 and the first end of the twenty-fifth resistor R25 are connected to the BUCK-BOOST module 105 to receive the second power supply signal; the grid electrode of the eighth MOS tube Q8 is connected with the second end of the twenty-fifth resistor R25 and the drain electrode of the ninth MOS tube Q9, and the drain electrode of the eighth MOS tube Q8 outputs a first power supply voltage (+12VA) to the plasma purifier; the source of the ninth MOS transistor Q9 is grounded, the gate of the ninth MOS transistor Q9 is connected to the plasma control end (the eleventh pin of the main control chip U1) of the control unit 107 through a twenty-eighth resistor R28, the first end of the thirty-fifth resistor R30 is connected to the gate of the ninth MOS transistor Q9, the second end of the thirty-fifth resistor R30 is grounded, and the twenty-first capacitor C21 is connected in parallel to the thirty-fifth resistor R30; a first end of the fifth inductor L5 is connected to the drain of the eighth MOS transistor Q8, a second end of the fifth inductor L5 is grounded, a third end of the fifth inductor L5 is connected to the first end of the seventh TVS transistor D7 and to the positive input terminal of the plasma purifier, and a fourth end of the fifth inductor L5 is connected to the second end of the seventh TVS transistor D7 and to the negative input terminal of the plasma purifier.
The fan drive adjustment circuit 113 includes: a thirty-fourth resistor R34, a tenth MOS transistor Q10, an eleventh MOS transistor Q11, a thirty-sixth resistor R36, a thirty-seventh resistor R37, a twenty-seventh capacitor C27, a sixth inductor L6, and an eighth TVS transistor D8.
The source of the tenth MOS transistor Q10 and the first end of the thirty-fourth resistor R34 are connected to the BUCK-BOOST module 105 for receiving the second power supply signal; the gate of the tenth MOS transistor Q10 is connected to the second end of the thirty-fourth resistor R34 and the drain of the eleventh MOS transistor Q11, and the drain of the tenth MOS transistor Q10 outputs the second supply voltage (+12VB) to the fan; the source of the eleventh MOS transistor Q11 is grounded, the gate of the eleventh MOS transistor Q11 is connected to the fan control terminal (the fourteenth pin of the main control chip U1) of the control unit 107 through a thirty-sixth resistor R36, the first end of the thirty-seventh resistor R37 is connected to the gate of the eleventh MOS transistor Q11, the second end of the thirty-seventh resistor R37 is grounded, and the twenty-seventh capacitor C27 is connected in parallel to the thirty-seventh resistor R37; a first end of the sixth inductor L6 is connected to the drain of the tenth MOS transistor Q10, a second end of the sixth inductor L6 is grounded, a third end of the sixth inductor L6 is connected to the first end of the eighth TVS transistor D8 and to the positive input terminal of the fan, and a fourth end of the sixth inductor L6 is connected to the second end of the eighth TVS transistor D8 and to the negative input terminal of the fan.
The battery detection circuit 106 includes: a forty-second resistor R42, a forty-third resistor R43, a fifth diode D5, a forty-fourth resistor R44, and a forty-fourth capacitor C40.
A first end of the forty-second resistor R42 is connected to the positive terminal of the input power source 101, a second end of the forty-second resistor is connected to the first end of the forty-third resistor R43 and the cathode of the fifth diode D5, the anode of the fifth diode D5 is grounded, a second end of the forty-third resistor R43 is connected to the battery detection end (the second pin of the main control chip) of the control unit 107, a second end of the forty-third resistor R43 is also grounded through the forty-fourth resistor R44, and the forty-fourth capacitor C40 is connected in parallel with the forty-fourth resistor R44.
The temperature detection circuit 108 includes: sixty-eight resistor R68, sixty-nine resistor R69, temperature sensor RT1, seventy resistor and fifty-three capacitor C53.
A first end of the sixty-eight resistor R68 is connected to the high level, a second end of the sixty-eight resistor R68 is connected to a first end of the sixty-nine resistor R69 and a first end of the temperature sensor RT1, a second end of the sixty-nine resistor R69 is connected to a temperature detection end (a first pin of the main control chip U1) of the control unit 107, a second end of the temperature sensor RT1 is grounded, a seventy resistor is connected in parallel with the temperature sensor RT1, a first end of the fifty-three capacitor C53 is connected to a second end of the sixty-nine resistor R69, and a second end of the fifty-three capacitor C53 is grounded.
The fan regulation sampling circuit 109 includes: a fifty-third resistor R53, a seventy-first resistor R71, a seventy-second resistor R72, a seventy-third resistor R73, a fifty-fourth resistor R54, a fifth resistor R5, a forty-seventh capacitor C47 and a tenth TVS tube D10.
A first terminal of a fifty-third resistor R53 is connected to a fifth pin of a FAN adjustment button connector (FAN _ CONTROL), a second terminal of a fifty-third resistor R53 is connected to a first terminal of a seventy-first resistor R71, a first terminal of a seventy-first resistor R71 is connected to a fourth pin of the FAN adjustment button connector, a second terminal of a seventy-first resistor R71 is connected to a first terminal of a seventy-second resistor R72, a first terminal of a seventy-second resistor R72 is connected to a third pin of the FAN adjustment button connector, a second terminal of a seventy-second resistor R72 is connected to a first terminal of a seventy-third resistor R73, a first terminal of a seventy-third resistor R73 is connected to a second pin of the FAN adjustment button connector, a second terminal of a seventy-third resistor R73 is connected to a second terminal of a fifty-fourth resistor R54 and a first terminal of a tenth TVS tube D3, a first terminal of a fourth resistor R54, a first terminal of a high-level resistor R73784 is connected to a first pin of the FAN adjustment button connector, the second end of the tenth TVS tube D10 is grounded, the first end of the fifth resistor R5 is connected to the first pin of the fan adjustment button connector, the second end of the fifth resistor R5 is connected to the fan adjustment sampling detection end of the control unit 107 (the twentieth pin of the main control chip U1), and the second end of the fifth resistor R5 is grounded through the fourth seventeenth capacitor C47.
The brightness adjustment sampling circuit 110 includes: a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a tenth resistor R10, a fourth resistor R4, an eleventh resistor R11, a first TVS tube D1 and a fourth capacitor C4.
A first end of a sixth resistor R6 is connected to a fifth pin of a brightness adjusting button connector (LED _ CONTROL), a second end of a sixth resistor R6 is connected to a first end of a seventh resistor R7, a first end of a seventh resistor R7 is connected to a fourth pin of the brightness adjusting button connector, a second end of a seventh resistor R7 is connected to a first end of an eighth resistor R8, a first end of the eighth resistor R8 is connected to a third pin of the brightness adjusting button connector, a second end of the eighth resistor R8 is connected to a first end of a tenth resistor R10, a first end of the tenth resistor R10 is connected to a second pin of the brightness adjusting button connector, a second end of the tenth resistor R10 is connected to a second end of the fourth resistor R4 and a first end of the first TVS tube D1, a first end of the fourth resistor R4 is connected to a high level, a first end of the first TVS tube D1 is further connected to a first end of the brightness adjusting button connector, a first ground connection of the TVS tube D1, a first end of the eleventh resistor R11 is connected to the first pin of the brightness adjustment button connector, a second end of the eleventh resistor R11 is connected to the brightness adjustment sampling detection end (the fifteenth pin of the main control chip) of the control unit 107, and a second end of the eleventh resistor R11 is grounded through the fourth capacitor C4.
Further, the utility model also provides a vehicle-mounted air purifier, this vehicle-mounted air purifier is equipped with the utility model discloses a vehicle-mounted air purifier drive control circuit can effectively promote vehicle-mounted air purifier drive power supply efficiency through setting up this drive control circuit, reduces quiescent current, promotes the reliability.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and implement the present invention accordingly, which can not limit the protection scope of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention shall fall within the scope of the claims of the present invention.
Claims (19)
1. A vehicle-mounted air purifier drive control circuit, comprising: the device comprises a switch control circuit, a BUCK-BOOST module, a battery detection circuit, a control unit and a drive circuit;
the switch control circuit is connected with an input power supply, receives the voltage output by the input power supply and controls the input or the turn-off of electric energy according to a control switch;
the BUCK-BOOST module is connected with the switch control circuit, receives the electric energy transmitted by the switch control circuit, performs voltage rising/reducing processing on the electric energy, and outputs a second power supply signal to the driving circuit;
the battery detection circuit is connected with the switch control circuit, detects the voltage of the input power supply and outputs a battery voltage sampling signal to the control unit;
the control unit is respectively connected with the battery detection circuit and the driving circuit and is used for controlling the driving circuit to work according to sampling information.
2. The vehicle-mounted air purifier drive control circuit of claim 1, further comprising: a BOOST module;
the BOOST module is connected with the switch control circuit, receives the electric energy transmitted by the switch control circuit, performs BOOST processing on the electric energy, and outputs a first power supply signal to the LED load.
3. The on-vehicle air cleaner drive control circuit of claim 2, characterized by further comprising: an input anti-reverse circuit for performing an input anti-reverse function;
the input end of the input anti-reverse circuit is connected with the switch control circuit, and the output end of the input anti-reverse circuit is respectively connected with the BOOST module, the battery detection circuit and the BUCK-BOOST module.
4. The on-vehicle air cleaner drive control circuit of claim 3, characterized in that the drive circuit includes: a plasma drive control circuit;
the input end of the plasma drive control circuit is connected with the control unit, the output end of the plasma drive control circuit is connected with the plasma air purifier, and the power supply end of the plasma drive control circuit is connected with the BUCK-BOOST module.
5. The vehicle air cleaner drive control circuit of claim 4, wherein the drive circuit further comprises: a fan drive adjustment circuit;
the input end of the fan driving adjusting circuit is connected with the control unit, the output end of the fan driving adjusting circuit is connected with the fan, and the power supply end of the fan driving adjusting circuit is connected with the BUCK-BOOST module.
6. The on-vehicle air cleaner drive control circuit of claim 5, characterized by further comprising: the temperature detection circuit is connected with the control unit;
the temperature detection circuit is used for detecting the ambient temperature and outputting a temperature detection signal to the control unit.
7. The on-vehicle air cleaner drive control circuit of claim 6, characterized by further comprising: the fan adjusting sampling circuit is connected with the control unit;
the fan adjusting and sampling circuit is used for receiving a fan adjusting input signal and outputting a fan adjusting and sampling signal to the control unit;
the control unit receives the fan adjusting sampling signal and outputs a fan control signal to the fan driving adjusting circuit according to the fan adjusting sampling signal so as to control the fan driving adjusting circuit to output the fan adjusting signal to adjust the fan.
8. The on-vehicle air cleaner drive control circuit of claim 6, characterized by further comprising: the brightness adjusting and sampling circuit is connected with the control unit;
the brightness adjusting and sampling circuit is used for receiving a brightness adjusting input signal and outputting a brightness adjusting and sampling signal according to the brightness adjusting input signal;
the control unit receives the brightness adjustment sampling signal and outputs a brightness control signal to the BOOST module according to the brightness adjustment sampling signal so as to control the BOOST module to adjust the first power supply signal according to the brightness control signal.
9. The on-vehicle air cleaner drive control circuit of claim 6, wherein the switch control circuit includes: a ninth resistor, a twelfth resistor, an eighth capacitor, a ninth diode, a fifth MOS (metal oxide semiconductor) transistor, a twenty-first resistor, a first MOS transistor, a fifty-fourth capacitor and a second resistor;
a first end of the ninth resistor is connected with the control switch, a second end of the ninth resistor is connected with a grid electrode of the fifth MOS transistor, a first end of the eighth capacitor is connected with the grid electrode of the fifth MOS transistor, a second end of the eighth capacitor is grounded, the twelfth resistor is connected with the eighth capacitor in parallel, an anode of the ninth diode is connected with a source electrode of the fifth MOS transistor, a cathode of the ninth diode is grounded, and a drain of the fifth MOS transistor is connected with the grid electrode of the first MOS transistor through the twenty-first resistor;
the first end of the second resistor is connected with the source electrode of the first MOS tube, the second end of the second resistor is connected with the grid electrode of the first MOS tube, the fifty-fourth capacitor is connected with the second resistor in parallel, the source electrode of the first MOS tube is connected with the positive end of the input power supply, and the drain electrode of the first MOS tube is connected with the input end of the input anti-reverse circuit.
10. The on-vehicle air purifier drive control circuit of claim 9, wherein the input anti-reverse circuit comprises: the second MOS tube, the first resistor, the third capacitor and the first capacitor;
the second MOS tube is used as the input end of the input anti-reverse circuit and is connected with the drain electrode of the first MOS tube, and the source electrode of the second MOS tube outputs the voltage of the input power supply; the first end of the first resistor is connected with the negative end of the input power supply, the second end of the first resistor is connected with the grid electrode of the second MOS tube and the second end of the third resistor, the first end of the third resistor is connected with the source electrode of the second MOS tube, and the first capacitor is connected with the third resistor in parallel.
11. The on-vehicle air cleaner drive control circuit of claim 10, characterized by further comprising: and the filter circuit is arranged at the output end of the input anti-reversion circuit and is used for filtering the electric energy transmitted by the input anti-reversion circuit.
12. The on-vehicle air cleaner drive control circuit of claim 11, wherein the filter circuit includes: the filter capacitor, the second capacitor and the third capacitor;
the positive end of the filter capacitor is connected with the source electrode of the second MOS tube, the negative end of the filter capacitor is connected with the negative end of the input power supply, and the second capacitor and the third capacitor are sequentially connected with the filter capacitor in parallel.
13. The on-vehicle air cleaner drive control circuit of claim 12, wherein the plasma drive control circuit includes: the eighth MOS tube, the twenty-fifth resistor, the ninth MOS tube, the twenty-eighth resistor, the thirty-sixth capacitor, the fifth inductor and the seventh TVS tube;
a source electrode of the eighth MOS tube and a first end of the twenty-fifth resistor are connected to the BUCK-BOOST module to access the second power supply signal;
a grid electrode of the eighth MOS tube is connected with a second end of the twenty-fifth resistor and a drain electrode of the ninth MOS tube, and the drain electrode of the eighth MOS tube outputs a first power supply voltage to the plasma purifier; the source of the ninth MOS transistor is grounded, the gate of the ninth MOS transistor is connected to the plasma control end of the control unit through the twenty-eighth resistor, the first end of the thirty-fifth resistor is connected to the gate of the ninth MOS transistor, the second end of the thirty-fifth resistor is grounded, and the twenty-first capacitor is connected in parallel with the thirty-fifth resistor;
the first end of the fifth inductor is connected with the drain electrode of the eighth MOS transistor, the second end of the fifth inductor is grounded, the third end of the fifth inductor is connected with the first end of the seventh TVS transistor and is connected to the positive input end of the plasma purifier, and the fourth end of the fifth inductor is connected with the second end of the seventh TVS transistor and is connected to the negative input end of the plasma purifier.
14. The vehicle air cleaner drive control circuit of claim 13, wherein the fan drive adjustment circuit comprises: a thirty-fourth resistor, a tenth MOS transistor, an eleventh MOS transistor, a thirty-sixth resistor, a thirty-seventh resistor, a twenty-seventh capacitor, a sixth inductor, and an eighth TVS transistor;
a source electrode of the tenth MOS tube and a first end of the thirty-fourth resistor are connected and connected to the BUCK-BOOST module so as to access the second power supply signal;
the grid electrode of the tenth MOS tube is connected with the second end of the thirty-fourth resistor and the drain electrode of the eleventh MOS tube, and the drain electrode of the tenth MOS tube outputs a second power supply voltage to the fan; the source of the eleventh MOS tube is grounded, the gate of the eleventh MOS tube is connected with the fan control end of the control unit through the thirty-sixth resistor, the first end of the thirty-seventh resistor is connected with the gate of the eleventh MOS tube, the second end of the thirty-seventh resistor is grounded, and the twenty-seventh capacitor is connected in parallel with the thirty-seventh resistor;
a first end of the sixth inductor is connected to the drain of the tenth MOS transistor, a second end of the sixth inductor is grounded, a third end of the sixth inductor is connected to the first end of the eighth TVS transistor and to the positive input end of the fan, and a fourth end of the sixth inductor is connected to the second end of the eighth TVS transistor and to the negative input end of the fan.
15. The vehicle-mounted air purifier drive control circuit of claim 1, wherein the battery detection circuit comprises: a forty-second resistor, a forty-third resistor, a fifth diode, a forty-fourth resistor, and a forty-fourth capacitor;
the first end of the forty-second resistor is connected with the positive end of the input power supply, the second end of the forty-second resistor is connected with the first end of the forty-third resistor and the cathode of the fifth diode, the anode of the fifth diode is grounded, the second end of the forty-third resistor is connected with the battery detection end of the control unit, the second end of the forty-third resistor is grounded through the forty-fourth resistor, and the forty-capacitor is connected with the forty-fourth resistor in parallel.
16. The on-vehicle air cleaner drive control circuit of claim 6, wherein the temperature detection circuit includes: sixty-eight resistors, sixty-nine resistors, a temperature sensor, a seventy resistor, and a fifty-third capacitor;
a first end of the sixty-eight resistor is connected with a high level, a second end of the sixty-eight resistor is connected with a first end of the sixty-nine resistor and a first end of the temperature sensor, a second end of the sixty-nine resistor is connected with a temperature detection end of the control unit, a second end of the temperature sensor is grounded, the seventy resistor is connected with the temperature sensor in parallel, a first end of the fifty-third capacitor is connected with a second end of the sixty-nine resistor, and a second end of the fifty-third capacitor is grounded.
17. The on-vehicle air purifier drive control circuit of claim 7, wherein the fan regulation sampling circuit comprises: a fifty-third resistor, a seventy-first resistor, a seventy-second resistor, a seventy-third resistor, a fifty-fourth resistor, a fifth resistor, a forty-seventh capacitor, and a tenth TVS tube;
a first end of the fifty-third resistor is connected to a fifth pin of a fan adjustment button connector, a second end of the fifty-third resistor is connected to a first end of the seventy-first resistor, a first end of the seventy-first resistor is connected to a fourth pin of the fan adjustment button connector, a second end of the seventy-first resistor is connected to a first end of the seventy-second resistor, a first end of the seventy-second resistor is connected to a third pin of the fan adjustment button connector, a second end of the seventy-second resistor is connected to a first end of the seventy-third resistor, a first end of the seventy-third resistor is connected to a second pin of the fan adjustment button connector, a second end of the seventy-third resistor is connected to a second end of the fifty-fourth resistor and a first end of the tenth TVS tube, and a first end of the fifty-fourth resistor is connected to a high level, the first end of the tenth TVS pipe is further connected with the first pin of the fan adjusting button connector, the second end of the tenth TVS pipe is grounded, the first end of the fifth resistor is connected with the first pin of the fan adjusting button connector, the second end of the fifth resistor is connected with the fan adjusting sampling detection end of the control unit, and the second end of the fifth resistor is grounded through the forty-seventh capacitor.
18. The vehicle air purifier drive control circuit of claim 8, wherein the brightness adjustment sampling circuit comprises: a sixth resistor, a seventh resistor, an eighth resistor, a tenth resistor, a fourth resistor, an eleventh resistor, a first TVS tube and a fourth capacitor;
a first end of the sixth resistor is connected to a fifth pin of a brightness adjustment button connector, a second end of the sixth resistor is connected to a first end of the seventh resistor, a first end of the seventh resistor is connected to a fourth pin of the brightness adjustment button connector, a second end of the seventh resistor is connected to a first end of the eighth resistor, a first end of the eighth resistor is connected to a third pin of the brightness adjustment button connector, a second end of the eighth resistor is connected to a first end of the tenth resistor, a first end of the tenth resistor is connected to a second pin of the brightness adjustment button connector, a second end of the tenth resistor is connected to a second end of the fourth resistor and a first end of the first TVS tube, a first end of the fourth resistor is connected to a high level, and a first end of the first TVS tube is further connected to the first pin of the brightness adjustment button connector, the second end of the first TVS tube is grounded, the first end of the eleventh resistor is connected with the first pin of the brightness adjusting button connector, the second end of the eleventh resistor is connected with the fan adjusting sampling detection end of the control unit, and the second end of the eleventh resistor is grounded through the fourth capacitor.
19. A vehicle-mounted air cleaner characterized by comprising the vehicle-mounted air cleaner drive control circuit according to any one of claims 1 to 18.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120602495.0U CN214492785U (en) | 2021-03-24 | 2021-03-24 | Vehicle-mounted air purifier and drive control circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120602495.0U CN214492785U (en) | 2021-03-24 | 2021-03-24 | Vehicle-mounted air purifier and drive control circuit thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214492785U true CN214492785U (en) | 2021-10-26 |
Family
ID=78200263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120602495.0U Active CN214492785U (en) | 2021-03-24 | 2021-03-24 | Vehicle-mounted air purifier and drive control circuit thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214492785U (en) |
-
2021
- 2021-03-24 CN CN202120602495.0U patent/CN214492785U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101938148B (en) | Battery charging circuit and battery power supply equipment | |
| CN216034201U (en) | Dormancy awakening control circuit of automobile body controller | |
| CN109038784A (en) | A kind of Low-power-consumptiodormancy dormancy device, the system and method for solar controller | |
| CN214492785U (en) | Vehicle-mounted air purifier and drive control circuit thereof | |
| CN106354075A (en) | Remote controller control circuit with backlight screen | |
| CN202310206U (en) | Control circuit of ultra-low-power single wire power supply touch switch | |
| CN109131161A (en) | A kind of new-energy automobile low tension battery mends electric circuit and its control method | |
| CN112653215B (en) | Method and system for reducing static power consumption of vehicle-mounted power supply | |
| CN201570444U (en) | Main contactor energy-saving circuit with wide-range voltage input | |
| CN112769207B (en) | Solar street lamp aging test lithium battery capacity electric energy recovery system | |
| CN110539641B (en) | Low-voltage early warning and automatic power-off protection circuit of vehicle-mounted storage battery | |
| CN214420322U (en) | Daytime running position lamp control circuit and vehicle body control system | |
| CN201475861U (en) | Infrared induction solar photovoltaic illumination control device | |
| CN204305432U (en) | LED car lamp drive circuit | |
| CN219980504U (en) | Low-power consumption control circuit and energy storage system thereof | |
| CN212258784U (en) | Wide voltage heavy current power converter of electric motor car | |
| CN220139280U (en) | Control circuit of solar street lamp | |
| CN220822639U (en) | Low-cost battery power supply device | |
| CN210894486U (en) | Low-voltage alarm circuit | |
| CN219498993U (en) | Charging circuit and device of battery | |
| CN216146143U (en) | Solar power supply device | |
| CN215681864U (en) | Circuit for reducing electric quantity loss of vehicle-mounted charger | |
| CN221380539U (en) | Automobile emergency starting power supply device with low power consumption | |
| CN221829121U (en) | Intelligent emergency working desk lamp power circuit | |
| CN208112323U (en) | Automobile collecting cassette Low-power-consumptiodormancy dormancy circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |