WO2022022586A1 - Bidirectional wireless charging apparatus, bidirectional wireless charging control method, and bidirectional charging headlight - Google Patents

Abstract

Disclosed in the present application are a bidirectional wireless charging apparatus, a bidirectional wireless charging control method, and a bidirectional charging headlight. The bidirectional wireless charging apparatus comprises: a control unit, a discharge coil, a charging coil, an inverter unit, a rectifier unit, and a switching unit. The control unit is configured to receive a wireless discharge mode selection signal outputted by the switching unit, and to control the inverter unit to convert the direct current (DC) voltage outputted by a DC power supply into an alternating current (AC) voltage, and the discharge coil receives the AC voltage to convert electrical energy into magnetic energy and to externally output same. The control unit is further configured to receive a wireless charging mode selection signal outputted by the switching unit, control the rectifier unit to convert the AC voltage outputted by the charging coil into a DC voltage, and send the converted DC voltage to the DC power supply, so as to charge the DC power supply.

Description

Two-way wireless charging device, two-way wireless charging control method, and two-way charging headlight

This application claims the priority of the Chinese patent application with the application number 202010753047.0 filed with the China Patent Office on July 30, 2020, and the Chinese patent application with the application number 202010754269.4 filed with the China Patent Office on July 30, 2020 Priority, the entire contents of the aforementioned application are incorporated herein by reference.

technical field

The present application relates to the field of charging technology, for example, to a bidirectional wireless charging device, a bidirectional wireless charging control method, and a bidirectional charging headlamp.

Background technique

The lighting lamp in the related art only has a one-way charging function, that is, the power supply charges the lighting lamp. A single charging direction limits the usage scenarios of the lighting and cannot well meet the needs of the market.

SUMMARY OF THE INVENTION

The present application provides a two-way wireless charging device, a two-way wireless charging control method, and a two-way charging headlight, which solve the problem of one-way energy transmission, can realize two-way charging, and are convenient to use.

Provided is a two-way wireless charging device, comprising: a control unit, a first switch unit, a second switch unit, a discharge coil, a charging coil, an inverter unit, a rectifier unit and a switch unit, wherein,

The control end of the first switch unit is connected to the control unit, the first end of the first switch unit is connected to the DC power supply through the inverter unit, and the second end of the first switch unit is connected to the DC power supply discharge coil connection;

The control end of the second switch unit is connected to the control unit, the first end of the second switch unit is connected to the DC power supply through the rectifier unit, and the second end of the second switch unit is connected to the charging coil connection;

The control unit is configured to receive the wireless discharge mode selection signal output by the switching unit, control the first switch unit to turn on, control the second switch unit to turn off, and control the inverter unit to turn the direct current The DC voltage output by the power supply is converted into an AC voltage, and the discharge coil receives the AC voltage and converts electrical energy into magnetic energy for external output;

The control unit is further configured to receive the wireless charging mode selection signal output by the switching unit, control the first switch unit to turn off, control the second switch unit to turn on, and the rectifier unit outputs the charging coil output The AC voltage is converted into a DC voltage, and the converted DC voltage is delivered to the DC power supply to charge the DC power supply.

A bidirectional charging headlamp is also provided, including the bidirectional wireless charging device provided above, and a DC power supply connected to the bidirectional wireless charging device.

A bidirectional wireless charging control method is also provided for controlling the operation of the bidirectional wireless charging device provided above. The bidirectional wireless charging device includes a control unit, a first switch unit, a second switch unit, a discharge coil, a charging coil, an inverse A variable unit, a rectifier unit and a switching unit, the control method includes:

Get the mode selection signal;

If the mode selection signal is the wireless discharge mode selection signal, the first switch unit is controlled to be turned on, the second switch unit is controlled to be turned off, and the inverter unit is controlled to convert the DC voltage output by the DC power supply into AC voltage, and delivering the AC voltage to the discharge coil, converting electrical energy into magnetic energy for external output;

If the mode selection signal is the wireless charging mode selection signal, the first switch unit is controlled to be turned off, the second switch unit is controlled to be turned on, and the rectifier unit is controlled to convert the AC voltage output by the charging coil The DC power supply is charged for the DC voltage and delivering the transformed DC voltage to the DC power supply.

Also provided is a two-way charging headlight comprising:

a casing, wherein a mounting cavity is defined in the casing;

a light-emitting module, the light-emitting module is arranged in the casing, and the light-emitting module includes a circuit board and a light-emitting element arranged on the circuit board;

a DC power supply, the DC power supply is arranged in the housing, and the DC power supply is electrically connected to the circuit board;

a charging and discharging port, the charging and discharging port is electrically connected to the circuit board, and the charging and discharging port is configured for wired charging of the DC power supply or wired discharging of the DC power supply;

a discharge coil, the discharge coil is arranged in the installation cavity and is electrically connected to the circuit board, and the discharge coil is arranged for wireless discharge of the DC power supply;

A charging coil is provided in the installation cavity and is electrically connected with the circuit board, and the charging coil is provided for wireless charging of the DC power supply.

Also provided is a two-way charging headlight comprising:

a casing, wherein a mounting cavity is defined in the casing;

a light-emitting module, the light-emitting module is arranged in the housing, and the light-emitting module includes a circuit board and a light-emitting element arranged on the circuit board;

a DC power supply, the DC power supply is arranged in the housing, and the DC power supply is electrically connected to the circuit board;

a charging and discharging port, the charging and discharging port is electrically connected to the circuit board, and the charging and discharging port is configured for wired charging of the DC power supply or wired discharging of the DC power supply;

a discharge coil, the discharge coil is arranged in the installation cavity and is electrically connected to the circuit board, and the discharge coil is arranged for wireless discharge of the DC power supply;

a charging coil, the charging coil is arranged in the installation cavity and is electrically connected to the circuit board, and the charging coil is arranged for wireless charging of the DC power supply;

The circuit board includes a first switch unit, a second switch unit, an inverter unit, a rectifier unit and a switch unit, wherein a control end of the first switch unit is connected to the control unit, and a control end of the first switch unit is connected to the control unit. The first end is connected to the DC power supply through the inverter unit, and the second end of the first switch unit is connected to the discharge coil;

The control end of the second switch unit is connected to the control unit, the first end of the second switch unit is connected to the DC power supply through the rectifier unit, and the second end of the second switch unit is connected to the charging coil connection;

The control unit is configured to receive the wireless discharge mode selection signal output by the switching unit, control the first switch unit to turn on, control the second switch unit to turn off, and control the inverter unit to turn the direct current The DC voltage output by the power supply is converted into an AC voltage, and the discharge coil receives the AC voltage and converts electrical energy into magnetic energy for external output;

The control unit is further configured to receive the wireless charging mode selection signal output by the switching unit, control the first switch unit to turn off, control the second switch unit to turn on, and the rectifier unit outputs the charging coil output The AC voltage is converted into a DC voltage, and the converted DC voltage is delivered to the DC power supply to charge the DC power supply.

Description of drawings

FIG. 1 is a schematic structural diagram of a bidirectional wireless charging device according to an embodiment of the present application;

FIG. 2 is a schematic circuit diagram of a two-way wireless charging device provided by an embodiment of the present application;

3 is a schematic circuit diagram of another bidirectional wireless charging device provided by an embodiment of the present application;

FIG. 4 is a schematic structural diagram of another bidirectional wireless charging device provided by an embodiment of the present application;

FIG. 5 is a schematic structural diagram of another bidirectional wireless charging device provided by an embodiment of the present application;

6 is a schematic structural diagram of a bidirectional charging headlamp provided by an embodiment of the present application;

FIG. 7 is a flowchart of a bidirectional wireless charging control method provided by an embodiment of the present application;

8 is a schematic structural diagram of a bidirectional charging headlamp according to an embodiment of the present application;

9 is a schematic diagram of a bottom surface structure of a bidirectional charging headlamp according to an embodiment of the present application;

10 is a cross-sectional view of the bidirectional charging headlight of the embodiment of the present application in one direction;

FIG. 11 is a cross-sectional view of the bidirectional charging headlamp of the embodiment of the present application in another direction;

12 is an exploded schematic view of the bidirectional charging headlamp according to the embodiment of the present application;

FIG. 13 is a schematic structural diagram of a bottom case according to an embodiment of the present application.

detailed description

The present application will be described below with reference to the accompanying drawings and embodiments. The embodiments described here are only used to explain the present application, but not to limit the present application. For convenience of description, the drawings only show some but not all structures related to the present application.

FIG. 1 is a schematic structural diagram of a bidirectional wireless charging device according to an embodiment of the present application. This embodiment may be applicable to an application scenario in which an electromagnetic induction method is used to implement wireless charging between lighting devices.

As shown in FIG. 1 , the two-way wireless charging device 01 includes: a control unit 10 , a first switch unit 20 , a second switch unit 30 , a discharge coil 201 , a charging coil 301 , an inverter unit 40 , a rectifier unit 50 and a switch unit 60 , wherein the control end of the first switch unit 20 is connected to the control unit 10 , the first end of the first switch unit 20 is connected to the DC power supply 02 through the inverter unit 40 , and the second end of the first switch unit 20 is connected to the discharge coil 201 connection; the control end of the second switch unit 30 is connected to the control unit 10, the first end of the second switch unit 30 is connected to the DC power supply 02 through the rectifier unit 50, and the second end of the second switch unit 30 is connected to the charging coil 301; The control unit 10 is configured to receive the wireless discharge mode selection signal output by the switching unit 60 , control the first switching unit 20 to turn on, control the second switching unit 30 to turn off, and control the inverter unit 40 to convert the DC voltage output by the DC power supply 02 For AC voltage, the discharge coil 201 receives the AC voltage and converts electrical energy into magnetic energy for external output; the control unit 10 is further configured to receive the wireless charging mode selection signal output by the switching unit 60, control the first switching unit 20 to turn off, and control the second switching unit. 30 is turned on, the rectifier unit 50 converts the AC voltage output by the charging coil 301 into a DC voltage, and transmits the DC voltage to the DC power source 02 to charge the DC power source 02 .

The two-way wireless charging device 01 is equipped with a discharge coil 201 and a charging coil 301. The two-way wireless charging device 01 can work in the discharge mode or the charging mode, and the working mode is switched by the switching unit 60. The two-way wireless charging device 01 uses the principle of electromagnetic induction to realize energy exchange , the discharge coil 201 is configured to convert electrical energy into magnetic energy for external output; the charging coil 301 is configured to convert magnetic energy into electrical energy and provide the electrical energy to the DC power supply 02 .

In this embodiment, the lighting device is provided with a DC power supply 02 . The DC power source 02 can be a battery pack. The two-way wireless charging apparatus 01 can be used to realize external charging of the lighting device or to charge the lighting device. Connect the two-way wireless charging device 01 to the DC power supply 02 of the lighting equipment, if the switching unit 60 outputs a wireless discharge mode selection signal, the control unit 10 controls the two-way wireless charging device 01 to work in the discharge mode, and the control unit 10 controls the first switching unit 20 turn on, control the second switch unit 30 to turn off, and control the inverter unit 40 to convert the DC voltage output by the DC power supply 02 into an AC voltage, and the AC voltage is sent to the discharge coil 201 through the first switch unit 20, and the discharge coil 201 receives the AC voltage Voltage, alternating current flows in the discharge coil 201, an alternating magnetic field is generated around the discharge coil 201, the electrical energy and magnetic energy change periodically with the current in the discharge coil 201, and the magnetic energy is output in the form of electromagnetic waves to realize the external charging of the lighting equipment. If the switching unit 60 outputs the wireless charging mode selection signal, the control unit 10 controls the two-way wireless charging device 01 to work in the charging mode. At this time, the charging coil 301 is in a magnetic field whose magnetic flux changes periodically, and AC induction will be generated in the charging coil 301. The voltage, the AC induced voltage changes periodically with the magnetic field, the control unit 10 controls the first switch unit 20 to turn off, controls the second switch unit 30 to turn on, the AC induced voltage is sent to the rectifier unit 50 through the second switch unit 30, and the control The unit 10 controls the rectifier unit 50 to convert the AC induced voltage output by the charging coil 301 into a DC voltage, and transmits the converted DC voltage to the DC power source 02 to charge the DC power source 02 of the lighting device.

In this embodiment, the two-way wireless charging device 01 can be connected to the first lighting device and the second lighting device respectively. If the first lighting device is used as the charging device and the second lighting device is used as the device to be charged, the first lighting device will be The connected two-way wireless charging device 01 switches to the discharge mode, and switches the two-way wireless charging device 01 connected to the second lighting device to the charging mode. At this time, the first lighting device charges the second lighting device.

Therefore, in the two-way wireless charging device provided in this embodiment, the working mode is adjusted by the switching unit, and in the discharging mode, the control unit controls the first switching unit to be turned on, the second switching unit is turned off, and controls the inverter unit to turn on the lighting The DC voltage output by the device is converted into AC voltage, which provides AC voltage to the discharge coil, and the lighting device outputs energy to the outside; in the charging mode, the charging coil generates an induced electromotive force, and the control unit controls the first switch unit to turn off and the second switch unit to conduct. and control the rectifier unit to convert the AC voltage output by the charging coil into a DC voltage to charge the lighting equipment, which can realize wireless charging and discharging between different lighting equipment, without using the power cord connection, which solves the problem of one-way energy transmission. , can realize two-way energy transmission, simple structure, convenient and efficient use.

In the technical solution of this embodiment, the two-way wireless charging device includes a discharge coil and a charging coil. In the discharge mode, the control unit controls the DC power source to form alternating current through the inverter unit, and outputs energy through the discharge coil. In the charging mode, the control unit controls The AC voltage received by the unit control charging coil forms a DC voltage through the rectifier unit to charge the DC power supply, so that wireless charging and discharging between lighting equipment can be realized, the problem of one-way energy transmission is solved, and energy two-way transmission can be realized. Simple structure, convenient and efficient use.

Optionally, the switching unit 60 is provided with a selection switch, and the switching unit 60 is configured to output the wireless discharge mode selection signal or the wireless charging mode selection signal according to the position of the selection switch, and to output the wireless discharge mode selection signal or the wireless charging mode selection signal. delivered to the control unit 10 .

The selection switch can be an adjustment knob or a multi-position switch. If the two-way wireless charging device 01 is required to work in the discharge mode, the selection switch is toggled to the first position, and the switching unit 60 outputs a wireless discharge mode selection signal to the control unit 10. The control unit 10 receives the wireless discharge mode selection signal, the control unit 10 outputs a high-level signal to the first switch unit 20, controls the first switch unit 20 to conduct, and outputs a low-level signal to the second switch unit 30, controls the second switch unit 30 is turned off, and outputs a pulse width modulation (Pulse width modulation, PWM) wave according to a preset program to control the inverter unit 40 to work in an inverter state, and converts the DC voltage into an AC voltage and provides it to the discharge coil 201; if two-way wireless charging is required When the device 01 is working in the charging mode, the selection switch is toggled to the second position, the switching unit 60 outputs the wireless charging mode selection signal to the control unit 10, and the control unit 10 receives the wireless charging mode selection signal and outputs a low-level signal to the first switch The unit 20 controls the first switch unit 20 to be turned off, and outputs a high-level signal to the second switch unit 30, controls the second switch unit 30 to be turned on, and the rectifier unit 50 works in a rectification state, converting the AC voltage into a DC voltage to provide Give DC power 02.

FIG. 2 is a schematic circuit diagram of a bidirectional wireless charging device provided by an embodiment of the present application.

Optionally, as shown in FIG. 2 , the first switch unit 20 includes a first switch transistor Q1 , and the second switch unit 30 includes a second switch transistor Q2 .

In this embodiment, the first switch transistor Q1 may be an N-type metal-oxide-semiconductor field-effect transistor (Metal-Oxide-Semiconductor Field-Effect Transistor, MOS) switch transistor or an NPN-type triode. The second switch transistor Q2 can be an N-type MOS switch transistor or an NPN-type triode. If the control terminal of the first switch unit 20 receives a high level, the first switch unit 20 is turned on; if the control terminal of the first switch unit 20 receives a low level, the first switch unit 20 is turned off, and the second switch unit 20 is turned off. The working process of the switch unit 30 is the same and will not be repeated here.

Optionally, as shown in FIG. 2 , the inverter unit 40 includes: a single-phase full-bridge inverter circuit 401 , the control end of the single-phase full-bridge inverter circuit 401 is connected to the control unit 10 , and the single-phase full-bridge inverter circuit 401 The input end of the single-phase full-bridge inverter circuit 401 is connected to the DC power supply 02, the first output end of the single-phase full-bridge inverter circuit 401 is connected to the first end of the first switching unit 20, and the second output end of the single-phase full-bridge inverter circuit 401 is connected to the discharge coil. One end of 201 facing away from the first switch unit 20 is connected.

The single-phase full-bridge inverter circuit 401 includes a third switch Q3, a fourth switch Q4, a fifth switch Q5 and a sixth switch Q6, wherein the third switch Q3, the fourth switch Q4, and the fifth switch The control terminals of the tube Q5 and the sixth switch tube Q6 are connected to the control unit 10, the first end of the third switch tube Q3 is connected to the positive terminal of the DC power supply 02, and the second end of the third switch tube Q3 is connected to the fourth switch tube Q4 The first end of the fourth switch tube Q4 is connected to ground, the first end of the fifth switch tube Q5 is connected to the positive terminal of the DC power supply 02, and the second end of the fifth switch tube Q5 is connected to the sixth switch tube Q6 The first end of the switch tube Q6 is connected to the ground, the second end of the third switch tube Q3 and the first end of the fourth switch tube Q4 have a second node B, and the fifth switch tube Q5 has a second node B. There is a third node C between the second end and the first end of the sixth switch transistor Q6, the second node B is connected to the first end of the first switch unit 20, and the third node C is grounded.

Exemplarily, the third switch transistor Q3, the fourth switch transistor Q4, the fifth switch transistor Q5 and the sixth switch transistor Q6 may be MOS transistors or triode transistors with the same specification and model. The control unit 10 outputs a PWM control signal according to a preset program to control the on-off of the third switch tube Q3 to the sixth switch tube Q6, so that the single-phase full-bridge inverter circuit 401 works in the inverter state, and the DC power provided by the DC power supply 02 is used. The voltage is converted into an AC voltage. If the first switch unit 20 is turned on, the discharge coil 201 receives the AC voltage output by the single-phase full-bridge inverter circuit 401 .

Optionally, as shown in FIG. 2 , the rectification unit 50 includes: a single-phase full-wave rectification circuit 501 and a filter circuit 502 , and the single-phase full-wave rectification circuit 501 includes a transformer T, a first diode D1 and a second diode D2, the transformer T is provided with a first output terminal P1, a second output terminal P2 and a third output terminal P3, the second output terminal P2 is grounded; the positive terminal of the first diode D1 is connected to the first output terminal P1, and the second output terminal P2 is connected to the ground. The positive terminal of the diode D2 is connected to the third output terminal P3, the negative terminal of the first diode D1 is connected to the negative terminal of the second diode D2, and the negative terminal of the first diode D1 is connected to the second diode There is a first node A between the negative terminals of the tube D2; the filter circuit 502 includes a filter inductor L0 and a filter capacitor C0, the first end of the filter inductor L0 is connected to the first node A, and the second end of the filter inductor L0 is connected to the DC power supply 02 The positive end of the filter capacitor C0 is connected to the first end of the filter capacitor C0 and the second end of the filter inductor L0 is connected, and the second end of the filter capacitor C0 is grounded.

The first diode D1 and the second diode D2 have the characteristics of forward conduction and reverse cut-off, the transformer T may be a high frequency transformer, and the second output end P2 is the center tap of the output side of the transformer T.

In this embodiment, if the two-way wireless charging device 01 works in the charging mode, the control unit 10 controls the first switch Q1 to be turned off, and controls the second switch Q2 to be turned on. If the charging coil 301 is in a state where the magnetic flux changes periodically In the magnetic field, the charging coil 301 generates an AC induced voltage, and the AC induced voltage is transmitted to the input end of the transformer T through the second switch tube Q2, and the first diode D1 and the second diode D2 rectify the AC induced voltage, The filter circuit 502 performs filter processing on the rectified DC voltage, and the filtered DC voltage is sent to the DC power source 02 to charge the DC power source 02 .

FIG. 3 is a schematic circuit diagram of another bidirectional wireless charging device provided by an embodiment of the present application.

Optionally, as shown in FIG. 3 , the two-way wireless charging device 01 further includes: a first feedback circuit 710 and a second feedback circuit 720 . The first feedback circuit 710 is connected between the discharge coil 201 and the control unit 10 , and the second feedback circuit 710 is connected between the discharge coil 201 and the control unit 10 . The circuit 720 is connected between the charging coil 301 and the control unit 10. The first feedback circuit 710 is configured to detect the current flowing through the discharge coil 201 and send the detection result to the control unit 10; the second feedback circuit 720 is configured to detect the current flowing through the discharge coil 201. The current of the charging coil 301 is sent to the control unit 10 .

In this embodiment, if the two-way wireless charging device 01 operates in the discharge mode, the first feedback circuit 710 detects the current flowing through the discharge coil 201 in real time, the current value detected by the second feedback circuit 720 is 0, and the control unit 10 receives According to the current detection result sent by the first feedback circuit 710, if the current value flowing through the discharge coil 201 is less than or equal to the preset current threshold, the control unit 10 determines that the device has reached a constant voltage state, controls the first switch unit 20 to turn off, and controls The second switch unit 30 remains off, and the two-way wireless charging device 01 stops outputting energy to the outside.

In this embodiment, if the two-way wireless charging device 01 works in the charging mode, the current value detected by the first feedback circuit 710 is 0, the second feedback circuit 720 detects the current flowing through the charging coil 301 in real time, and the control unit 10 receives From the current detection result sent by the second feedback circuit 720, if the current value flowing through the charging coil 301 is less than or equal to the preset current threshold, the control unit 10 determines that the device has reached a constant voltage state, controls the second switch unit 30 to turn off, and controls The first switch unit 20 remains off, and stops charging the DC power source 02 .

Optionally, the first feedback circuit 710 includes a first sampling resistor, a first current detection chip, and a first analog-to-digital converter, and the second feedback circuit 720 includes a second sampling resistor, a second current detection chip, and a second analog-to-digital converter. wherein the first end of the first sampling resistor is connected to the first switch unit 20, the second end of the first sampling resistor is connected to the discharge coil 201, the detection end of the first current detection chip is connected to the first sampling resistor, and the second end of the first sampling resistor is connected to the discharge coil 201. The output end of a current detection chip is connected to the control unit 10 through the first analog-to-digital converter; the first end of the second sampling resistor is connected to the second switch unit 30 , the second end of the second sampling resistor is connected to the charging coil 301 , The detection terminal of the second current detection chip is connected to the second sampling resistor, and the output terminal of the second current detection chip is connected to the control unit 10 through the second analog-to-digital converter.

The resistance value of the first sampling resistor may be 0.2-0.5 ohm, and the resistance value of the second sampling resistor may be 0.2-0.5 ohm. For example, the resistance value of the first sampling resistor can be set to be equal to 0.5 ohm, and the resistance value of the second sampling resistor Equal to 0.5 ohms, to avoid the power consumption of the sampling resistor.

In this embodiment, the first current detection chip detects the current value flowing through the first sampling resistor, and generates an analog signal, and the first analog-to-digital converter converts the analog signal output by the first current detection chip into a digital signal, and converts the analog signal output by the first current detection chip into a digital signal. The digital signal is sent to the control unit 10, and the control unit 10 performs current monitoring according to the received digital signal. The working process of the second feedback circuit 720 is similar to that of the first feedback circuit 710, and will not be repeated here.

FIG. 4 is a schematic structural diagram of another bidirectional wireless charging device provided by an embodiment of the present application.

Optionally, as shown in FIG. 4 , the bidirectional wireless charging device 01 further includes: a DC-DC conversion unit 80 , a first end of the DC-DC conversion unit 80 is connected to the DC power source 02 , and a second end of the DC-DC conversion unit 80 is connected to the DC power supply 02 . The terminals are respectively connected to the inverter unit 40 and the rectifier unit 50 .

The DC-DC conversion unit 80 can adopt a bidirectional DC-DC (Direct Current Direct Current, DC-DC) conversion topology. If the bidirectional wireless charging device 01 works in the discharge mode, the DC-DC conversion unit 80 outputs the DC power supply 02 . The voltage is boosted, and the boosted DC voltage is provided to the inverter unit 40; if the two-way wireless charging device 01 works in the charging mode, the DC-DC conversion unit 80 steps down the DC voltage output by the rectifier unit 50 processing, and the step-down DC voltage is sent to the DC power supply 02, which can achieve voltage matching and improve work efficiency.

FIG. 5 is a schematic structural diagram of another bidirectional wireless charging device provided by an embodiment of the present application.

Optionally, as shown in FIG. 5 , the two-way wireless charging device 01 further includes a power detection unit 90, the detection end of the power detection unit 90 is connected to the DC power supply 02, the output end of the power detection unit 90 is connected to the control unit 10, and the power detection unit 90 is connected to the control unit 10. The unit 90 is configured to detect the remaining power of the DC power supply 02 and send the remaining power to the control unit 10; the control unit 10 stores a preset power threshold, and the control unit 10 is also set to control the remaining power when the remaining power is lower than the preset power threshold. The first switching unit 20 is turned off.

In this embodiment, if the two-way wireless charging device 01 works in the discharge mode, the control unit 10 receives the remaining power of the DC power supply 02 output by the power detection unit 90, and compares the remaining power with the preset power threshold. When the power is lower than the preset power threshold, the control unit 10 determines that the power of the DC power supply 02 is low, controls the first switch unit 20 to turn off, and controls the second switch unit 30 to keep off, and the DC power supply 02 stops outputting energy externally, which is beneficial to Avoid over-discharge of DC power supply 02 to damage the cells.

In the two-way wireless charging device provided by this embodiment, the working mode is adjusted by the switching unit, and in the discharging mode, the control unit controls the first switching unit to be turned on and the second switching unit to be turned off, and controls the inverter unit to output the output of the lighting device. The DC voltage is converted into AC voltage, which provides AC power to the discharge coil, and the lighting equipment outputs energy to the outside; in the charging mode, the charging coil generates an induced electromotive force, and the control unit controls the first switch unit to be turned off and the second switch unit to be turned on, and controls The rectifier unit converts the AC voltage output by the charging coil into a DC voltage to charge the lighting equipment, which can realize wireless charging and discharging between different lighting equipment, without the need to use the power cord connection, solve the problem of one-way energy transmission, and realize the energy Two-way transmission, simple structure, convenient and efficient use; at the same time, in this embodiment, a power detection unit is set to monitor the power of the DC power supply in real time, stop external charging when the power is too low, and prolong the service life of the DC power supply.

The embodiment of the present application further provides a bidirectional charging headlamp, and FIG. 6 is a schematic structural diagram of the bidirectional charging headlamp provided by the embodiment of the present application. As shown in FIG. 6 , the two-way charging headlight 100 includes the above-mentioned two-way wireless charging device 01 and a DC power supply 02 connected to the two-way wireless charging device 01 .

In this embodiment, the two-way charging headlight 100 can be a miner's lamp. The two-way charging headlight 100 can be directly connected to an external power source through a wire harness for charging, or can be wirelessly charged through the two-way wireless charging device 01. At the same time, the DC power supply of the two-way charging headlight 100 02 can also be connected to the two-way wireless charging device 01 to realize external power output.

The two-way wireless charging device 01 is configured with a discharge coil and a charging coil, and the two-way charging headlamp 100 can work in a discharge mode or a charging mode.

In this embodiment, if the first lighting device is used as the charging device and the second lighting device is used as the device to be charged, the first lighting device is switched to the discharging mode, and the second lighting device is switched to the charging mode. A lighting device charges a second lighting device.

Therefore, in the lighting equipment provided by the embodiments of the present application, a two-way wireless charging device is provided, and the two-way wireless charging device is provided with a switching unit, a first switching unit, a second switching unit, a discharge coil and a charging coil, and the discharge mode is switched by the switching unit. Or in the charging mode, in the discharging mode, the control unit controls the first switch unit to be turned on and the second switch unit to be turned off, and controls the inverter unit to convert the DC voltage output by the bidirectional charging headlamp into AC voltage to provide the discharge coil. Alternating current, bidirectional charging headlights output energy externally; in charging mode, the charging coil generates induced electromotive force, and the control unit controls the first switch unit to turn off and the second switch unit to turn on, and controls the rectifier unit to output the AC voltage from the charging coil Converting to DC voltage, charging the bidirectional charging headlights, can realize wireless charging and discharging between different bidirectional charging headlights, solve the problem of one-way energy transmission, and realize two-way energy transmission. The structure is simple, and the use is convenient and efficient.

The embodiment of the present application provides a bidirectional wireless charging control method, which is suitable for the application scenario of controlling the operation of the above-mentioned bidirectional wireless charging device to realize external charging of the bidirectional charging headlamp or charging the bidirectional charging headlamp. The bidirectional wireless charging device includes a control unit, a first switch unit, a second switch unit, a discharge coil, a charge coil, an inverter unit, a rectifier unit and a switch unit.

FIG. 7 is a flowchart of a bidirectional wireless charging control method provided by an embodiment of the present application.

As shown in Figure 7, the two-way wireless charging control method includes the following steps:

Step S1: Acquire a mode selection signal, wherein the mode selection signal includes a wireless discharge mode selection signal and a wireless charging mode selection signal.

In this embodiment, a switching unit may be provided, and the operator switches the working mode of the two-way wireless charging device by operating the switching unit.

Step S2: if the mode selection signal is the wireless discharge mode selection signal, the first switch unit is controlled to be turned on, the second switch unit is controlled to be turned off, and the inverter unit is controlled to convert the DC voltage output by the DC power supply into an AC voltage, and the discharge coil Receive AC voltage and convert electrical energy into magnetic energy for external output.

Step S3: if the mode selection signal is the wireless charging mode selection signal, the first switch unit is controlled to be turned off, the second switch unit is controlled to be turned on, the rectifier unit converts the AC voltage output by the charging coil into a DC voltage, and transmits the DC voltage to to the DC power supply, to charge the DC power supply.

In this embodiment, the two-way charging headlamp is provided with a DC power supply. If the switching unit outputs a wireless discharge mode selection signal, the control unit controls the two-way wireless charging device to work in the discharge mode, the control unit controls the first switch unit to conduct, and controls the second The second switch unit is turned off, and the inverter unit is controlled to convert the DC voltage output by the DC power supply into an AC voltage, and the AC voltage is sent to the discharge coil through the first switch unit, the discharge coil receives the AC voltage, and an alternating current flows through the discharge coil, then An alternating magnetic field is generated around the discharge coil, the electrical energy and magnetic energy change periodically with the current in the discharge coil, and the magnetic energy is output in the form of electromagnetic waves to realize the external charging of the two-way charging headlight; if the switching unit outputs a wireless charging mode selection signal, Then the control unit controls the two-way wireless charging device to work in the charging mode. At this time, the charging coil is in a magnetic field where the magnetic flux changes periodically, and an AC induced voltage is generated in the charging coil. The AC induced voltage changes periodically with the magnetic field, and the control unit controls The first switch unit is turned off, and the second switch unit is controlled to be turned on. The AC induced voltage is transmitted to the rectifier unit through the second switch unit. The control unit controls the rectifier unit to convert the AC induced voltage output by the charging coil into a DC voltage, and converts the converted voltage. The DC voltage is sent to the DC power supply to charge the DC power supply of the bidirectional charging headlight.

Therefore, the two-way wireless charging control method provided by the embodiment of the present application controls the operation of the two-way wireless charging device. The two-way wireless charging device is provided with a switching unit, a first switching unit, a second switching unit, a discharge coil and a charging coil. In the mode, the first switch unit is controlled to be turned on and the second switch unit is turned off by the control unit, and the inverter unit is controlled to convert the DC voltage output by the bidirectional charging headlamp into an AC voltage, and provide AC power to the discharge coil, and the bidirectional charging headlamp Output energy to the outside; in the charging mode, the charging coil generates induced electromotive force, and the control unit controls the first switch unit to turn off and the second switch unit to turn on, and controls the rectifier unit to convert the AC voltage output by the charging coil into a DC voltage. The two-way charging headlight charging can realize wireless charging and discharging between different two-way charging headlights, which solves the problem of one-way energy transmission, and can realize two-way energy transmission. The structure is simple, and the use is convenient and efficient.

The embodiment of the present application also provides a bidirectional charging headlamp. 8-13 describe the bidirectional charging headlights of the embodiments of the present application. As shown in FIGS. 8-13 , the bidirectional charging headlamp includes a housing 1 , a light-emitting module 2 , a DC power supply 3 , a charging and discharging port 4 , a charging coil and a discharging coil. The housing 1 defines an installation cavity, the light-emitting module 2 is arranged in the housing 1, the light-emitting module 2 includes a circuit board 21 and a light-emitting element 22 arranged on the circuit board 21, the DC power supply 3 is electrically connected to the circuit board 21, The charging and discharging port 4 is electrically connected with the circuit board 21, the charging and discharging port 4 is set as wired charging of the DC power supply 3 or wired discharging of the DC power supply 3, the discharge coil is set in the installation cavity, and is electrically connected with the circuit board 21, and the discharge coil is set For the wireless discharge of the DC power supply 3 , the charging coil is arranged in the installation cavity and is electrically connected to the circuit board 21 , and the charging coil is arranged for the wireless charging of the DC power supply 3 .

In the bidirectional charging headlamp of this embodiment, the charging and discharging port 4 can realize wired charging and wired discharging of the DC power supply 3 . That is to say, the bidirectional charging headlamp of this embodiment can realize the charging of the DC power supply 3 through the charging cable, and can also realize the charging of other devices (such as other headlamps) through the charging cable; The bidirectional charging headlamp also includes a charging coil and a discharging coil. The bidirectional charging headlamp of this embodiment can realize wireless charging of the DC power supply 3 through the charging coil, and can also realize wireless charging to other devices (such as other headlamps) through the discharging coil. discharge. Therefore, the bidirectional charging headlamp of this embodiment has four working modes: wired charging, wired discharging, wireless charging and wireless discharging, which makes the usage scenarios of the bidirectional charging headlamp more diverse and meets various usage demands of users.

In addition to the switch for turning on and off, the bidirectional charging headlight of this embodiment should also include a switch, which can switch between the wired charging and discharging working state and the wireless charging and discharging working state. The switch can be purchased from outside, and the type of the switch, the connection with the circuit board 21, and the control logic can be selected according to actual needs, and there is no need to limit the switch in this embodiment.

In some embodiments, as shown in FIG. 13 , the case 1 includes a bottom case 11 and a cover case 12 , the upper end of the bottom case 11 is open, and the bottom wall of the bottom case 11 is provided with a matching groove 111 , a charging coil and a discharging coil It is arranged in the matching groove 111 , the lower end of the cover case 12 is open and disposed, and the cover case 12 is fastened to the bottom case 11 . Disposing the charging coil and the discharging coil in the matching groove 111 can better ensure the stability of the charging coil and the discharging coil, thereby improving the reliability of the bidirectional charging headlamp.

In order to improve the reliability of the charging coil and the discharging coil, the charging coil and the discharging coil can be fixed in the matching groove 111 by means of glue drop after the charging coil and the discharging coil are arranged in the matching groove 111 .

The shape of the matching groove 111 in this embodiment can be selected according to the shapes of the charging coil and the discharging coil, and the shape of the matching groove 111 is not limited herein.

In some embodiments, as shown in FIG. 12 , the outer side of the discharge coil is covered with a discharge insulating layer 6 , and the outer side of the charging coil is covered with a charging insulating layer 5 . The discharge insulating layer 6 can better protect the discharge coil, and the charging insulating layer 5 can better protect the charging coil, which reduces the damage probability of the discharge coil and the charging coil, ensures the reliability of the bidirectional charging headlight of this embodiment, and prolongs the life of the charging coil. The service life of the two-way charging headlight is prolonged.

In some embodiments, the discharge insulating layer 6 and the charging insulating layer 5 are integrally formed. Since the discharge insulating layer 6 and the charging insulating layer 5 are integrally formed, in the process of actually assembling the bidirectional charging headlamp, the charging coil and the discharging coil can be assembled at the same time, which simplifies the structure of the bidirectional charging headlamp and improves the bidirectional charging head. lamp production efficiency.

In some optional embodiments, as shown in FIG. 10 , the inner side wall of the bottom case 11 is provided with a snap ring 112 , and the cover case 12 is provided with a first snap protrusion 121 that cooperates with the snap ring 112 . 121 is snapped on the snap ring 112 so that the open end of the bottom case 11 abuts on the open end of the cover case 12 to form a first waterproof structure. Therefore, the first waterproof structure is formed by fitting the first snap protrusion 121 on the snap ring 112 so that the open end of the bottom case 11 abuts on the open end of the cover case 12, and the first waterproof structure can better prevent the penetration of external liquid. A phenomenon occurs inside the casing 1 , thereby causing damage to the circuit board 21 .

In some optional embodiments, as shown in FIG. 10 , the open end of the bottom case 11 is provided with a snap-fit groove 113 , and the cover case 12 is provided with a second snap-on protrusion 122 matched with the snap-fit groove 113 . The protrusions 122 are fitted into the engaging grooves 113 , and an adhesive is filled between the second engaging protrusions 122 and the engaging grooves 113 to form a second waterproof structure. Therefore, the second latching protrusions 122 are fitted in the latching grooves 113 and an adhesive is filled therebetween to form a second waterproof structure, which can better prevent external liquid from penetrating into the interior of the housing 1 , thereby causing A phenomenon of damage to the circuit board 21 occurs.

In the embodiment of the present application, the bidirectional charging headlight can be selectively provided with the first waterproof structure and the second waterproof structure according to actual needs. That is to say, in some embodiments, the two-way charging headlight is only provided with the first waterproof structure; in some embodiments, the two-way charging headlight is only provided with the second waterproof structure; The charging headlight is provided with a first waterproof structure and a second waterproof structure at the same time.

When the bidirectional charging headlamp is provided with the first waterproof structure and the second waterproof structure at the same time, in the process of assembling the bidirectional charging headlamp of this embodiment, first, an appropriate amount of adhesive needs to be placed in the clamping groove 113 to adhere The dosage of the adhesive is one-fifth to one-third of the depth of the snap groove 113 . Next, ensure that the first snap protrusion 121 is aligned with the snap ring 112 , and insert the second snap protrusion 122 of the cover 12 into the snap groove 113 , and make the first snap protrusion 121 snap against the snap ring 112 , and finally the adhesive is cured to realize the bonding between the bottom shell 11 and the cover shell 12 . In order to ensure the connection strength of the bottom case 11 and the cover case 12, curing may be performed two or more times. The curing can be room temperature curing or ultraviolet light curing, and the curing type can be selected according to the type of adhesive, and is not limited to the aforementioned room temperature curing and ultraviolet light curing.

In some embodiments, as shown in FIG. 9 , the charging/discharging port 4 includes an interface area 41 formed on the bottom wall of the housing 1 , and the interface area 41 is provided with two charging/discharging contacts protruding from the interface area 41 . At point 42, the charging and discharging contacts 42 are magnetic contacts. Since the charging and discharging contacts 42 protrude from the interface area 41 , the electrical connection of the entire charging and discharging interface is provided with a groove structure, which will not be affected by foreign objects after the electrical connection is completed. At the same time, since the charging and discharging contacts 42 are magnetic contacts, it is very convenient to use the magnetic contact charger connector to charge the device through magnetic adsorption with the charging and discharging contacts 42 .

In some optional embodiments, as shown in FIG. 9 , the interface area 41 is provided with a limit groove 411 and two guide grooves 412 , the limit groove 411 and the two guide grooves 412 are distributed in an isosceles triangle, and the limit groove The length direction of the guide groove 411 is perpendicular to the length direction of the guide groove 412 . When the magnetic contact charger connector is close to the interface area 41, the charging and discharging connector and the charging and discharging contact 42 will generate a large magnetic attraction force, and the guide groove 412 on the outer side of the charging and discharging contact 42 is matched with the guiding boss on the charging and discharging connector. , it is easy to make the charging and discharging contacts align and make good contact with the charging and discharging contacts 42 . The limit slot 411 on the interface area 41 can well limit the position of the charging and discharging connector. After charging is completed, when the charging and discharging connector is removed, the limiting slot 411 can function as a fulcrum, and the charging and discharging connector can be easily removed. Remove.

In some optional embodiments, as shown in FIGS. 11-14 , the light emitting module 2 further includes a reflector 23 , and the housing 1 includes a bottom shell 11 and a cover shell 12 fastened to the bottom shell 11 . The bottom shell 11 There are support bumps 114 thereon, and the circuit board 21 is sandwiched between the support bumps 114 and the reflector 23 .

In the related art, the circuit board 21 is usually fixed in the form of a column or a screw. Such a fixing method tends to waste a large internal space of the circuit board 21, thereby increasing the external volume of the headlamp. In this embodiment, the circuit board 21 is sandwiched between the bottom of the reflector 23 and the support bump 114, which greatly saves the internal space and reduces the size of the bidirectional charging headlamp.

In some optional embodiments, as shown in FIG. 9 , the bidirectional charging headlight further includes a hook module 7 and a damping shaft 8 . The hook module 7 is arranged on the bottom wall of the housing 1 , and the hook module 7 is arranged on the bottom wall There are mounting ears 71 and peg holes 72 , one end of the damping shaft 8 is passed through the mounting ears 71 , and the other end of the damping shaft 8 is connected to the bottom wall of the housing 1 . The hook module 7 can rotate relative to the damping shaft 8 , and the damping shaft 8 is configured to keep the hook module 7 at a position set at an angle with the bottom wall of the housing 1 .

The hook module 7 in the related art is usually directly fixed and installed on the bottom wall of the housing 1 of the headlamp, so that the relative positions of the headlamp and the hook module 7 are fixed. In the actual application of headlights, sometimes it is necessary to illuminate the headlights at different angles. Since the relative positions of the headlights and the hook module 7 are fixed and cannot be rotated, the illumination angle of the headlights cannot be changed, which limits the application of the headlights. Scenes.

In this embodiment, the hook module 7 is connected to the bottom case 11 through the damping shaft 8 , the hook module 7 can rotate relative to the damping shaft 8 , and the damping shaft 8 is configured to keep the hook module 7 on the bottom case 11 . A position set at an angle. That is to say, in the actual use process, the hook module 7 can rotate relative to the housing 1, so that the irradiation angle of the bidirectional charging headlamp can be arbitrarily changed, and the application range of the bidirectional charging headlamp can be expanded.

The damping rotating shaft 8 is provided with a damping sheet, which can better prevent the casing 1 from being reversed after the relative positions of the casing 1 and the hook module 7 are fixed.

As shown in FIG. 8 to FIG. 13 , the bidirectional charging headlamp includes a housing 1 , a light-emitting module 2 , a DC power supply 3 , a charging and discharging port 4 , a charging coil, a discharging coil, a hook module 7 and a damping shaft 8 . The housing 1 defines an installation cavity. The housing 1 includes a bottom shell 11 and a cover shell 12. The upper end of the bottom shell 11 is open and provided. The bottom wall of the bottom shell 11 is provided with a matching groove 111. The charging coil and the discharging coil are rectangular coils. And set in the matching groove 111 . The outer side of the discharge coil is covered with a discharge insulating layer 6 , and the outer side of the charging coil is covered with a charging insulating layer 5 . The discharge insulating layer 6 and the charging insulating layer 5 are integrally formed. The lower end of the cover case 12 is open and disposed, and the cover case 12 is fastened to the bottom case 11 . The inner side wall of the bottom case 11 is provided with a snap ring 112 , and the cover case 12 is provided with a first snap protrusion 121 that cooperates with the snap ring 112 . The end abuts on the open end of the cover shell 12 to form a first waterproof structure. The open end of the bottom case 11 is provided with a snap-fit groove 113 , the cover case 12 is provided with a second snap-on protrusion 122 matched with the snap-fit slit 113 , the second snap-on protrusion 122 fits in the snap-fit groove 113 , and the second snap-on protrusion 122 Adhesive is filled between it and the snap groove 113 to form a second waterproof structure.

The light-emitting module 2 is arranged in the housing 1, and the light-emitting module 2 includes a circuit board 21, a light-emitting element 22 arranged on the circuit board 21, and a reflector 23 arranged in the installation cavity. The DC power supply 3 is electrically connected to the circuit board 21. , the bottom case 11 is provided with a support bump 114 , and the circuit board 21 is sandwiched between the support bump 114 and the reflector 23 .

The charging and discharging port 4 is electrically connected to the circuit board 21 , and the charging and discharging port 4 is configured as wired charging of the DC power supply 3 or wired discharging of the DC power supply 3 , and the charging and discharging port 4 includes an interface area 41 formed on the bottom wall of the bottom case 11 , The interface area 41 is provided with two charging and discharging contacts 42 protruding from the interface area 41 , and the charging and discharging contacts 42 are magnetic contacts. The interface area 41 is provided with a limit groove 411 and two guide grooves 412 , the limit groove 411 and the two guide grooves 412 are distributed in an isosceles triangle, and the length direction of the limit groove 411 is perpendicular to the length direction of the guide groove 412 .

The hook module 7 is arranged on the bottom wall of the housing 1 , and the hook module 7 is provided with mounting ears 71 and peg holes 72 , one end of the damping shaft 8 is penetrated on the mounting ears 71 , and the other end is connected to the housing 1 . on the bottom wall. The hook module 7 can rotate relative to the damping shaft 8 , and the damping shaft 8 is configured to keep the hook module 7 at a position set at an angle with the bottom wall of the housing 1 .

The bidirectional charging headlight of this embodiment has the following effects:

First: It has four working modes: wired charging, wired discharging, wireless charging and wireless discharging, which makes the usage scenarios of the two-way charging headlights more diverse and meets the various usage needs of users.

Second: a first waterproof structure and a second waterproof structure are formed between the bottom case 11 and the cover case 12 , which better avoids the phenomenon that external liquid penetrates into the inside of the case 1 and damages the circuit board 21 .

Third: the circuit board 21 is sandwiched between the support bump 114 of the bottom case 11 and the reflector 23, which greatly saves the internal space and reduces the size of the bidirectional charging headlamp.

Fourth: the damping shaft 8 can keep the hook module 7 at an angle with the bottom wall of the housing 1, and the irradiation angle of the bidirectional charging headlamp can be arbitrarily changed, which expands the scope of application of the bidirectional charging headlamp.

The embodiment of the present application also provides a bidirectional charging headlamp. The two-way charging headlight includes:

a housing 1, a mounting cavity is defined in the housing 1;

The light-emitting module 2, the light-emitting module 2 is arranged in the housing 1, and the light-emitting module 2 includes a circuit board 21 and a light-emitting element 22 arranged on the circuit board 21;

The DC power supply 3 is arranged in the casing 1, and the DC power supply 3 is electrically connected to the circuit board 21;

The charging and discharging port 4, the charging and discharging port 4 is electrically connected with the circuit board 21, and the charging and discharging port 4 is set as the wired charging of the DC power supply 3 or the wired discharging of the DC power supply 3;

Discharge coil, the discharge coil is arranged in the installation cavity and is electrically connected with the circuit board 21, and the discharge coil is arranged as the wireless discharge of the DC power supply 3;

The charging coil, the charging coil is arranged in the installation cavity, and is electrically connected with the circuit board 21, and the discharging coil is arranged for the wireless charging of the DC power supply 3;

The circuit board 21 includes a first switch unit 20 , a second switch unit 30 , an inverter unit 40 , a rectifier unit 50 and a switch unit 60 , wherein the control end of the first switch unit 20 is connected to the control unit 10 , and the first switch unit 20 The first end of the first switch unit 20 is connected to the DC power supply 3 through the inverter unit 40, and the second end of the first switch unit 20 is connected to the discharge coil;

The control end of the second switch unit 30 is connected to the control unit 10, the first end of the second switch unit 30 is connected to the DC power supply 3 through the rectifier unit 50, and the second end of the second switch unit 30 is connected to the charging coil;

The control unit 10 is configured to receive the wireless discharge mode selection signal output by the switching unit 60 , control the first switching unit 20 to turn on, control the second switching unit 30 to turn off, and control the inverter unit 40 to convert the DC voltage output by the DC power supply 3 For AC voltage, the discharge coil receives the AC voltage and converts the electrical energy into magnetic energy for external output;

The control unit 10 is further configured to receive the wireless charging mode selection signal output by the switching unit 60, control the first switch unit 20 to turn off, control the second switch unit 30 to turn on, and the rectifier unit 50 converts the AC voltage output by the charging coil into a DC voltage. , and the DC voltage is supplied to the DC power supply 3 to charge the DC power supply 3 .

The two-way charging headlight is equipped with a charging coil and a discharging coil. The circuit board can determine whether the two-way charging headlight works in the discharge mode or charging mode according to the selection signal output by the switching unit, so as to realize the wireless charging or wireless discharge of the two-way charging headlight, and realize the two-way charging headlight. The energy of the rechargeable headlamp is bidirectionally transmitted, the structure is simple, the use is convenient and efficient, the usage scenarios of the bidirectional rechargeable headlamp are increased, and the market demand is met. Moreover, the bidirectional charging head further includes a charging and discharging port, the circuit board further includes a third switch unit and a fourth switch unit, the control end of the third switch unit is connected to the control unit, and the first end of the third switch unit is connected to the control unit through the inverter unit. The DC power supply is connected, the second end of the third switch unit is connected to the charging and discharging port, the control end of the fourth switch unit is connected to the control unit, the first end of the fourth switch unit is connected to the DC power supply through the rectifier unit, and the fourth switch unit is connected to the DC power supply. The second end is connected to the charging and discharging port. The control unit is configured to receive the wired discharge mode selection signal output by the switching unit, control the third switch unit to turn on, control the fourth switch unit to turn off, and control the inverter unit to change the DC voltage output from the DC power supply to an AC voltage, charge and discharge The port receives the AC voltage and outputs the electrical energy to the outside. The control unit is further configured to receive the wired charging mode selection signal output by the switching unit, control the third switch unit to turn off, control the fourth switch unit to turn on, the rectifier unit converts the AC voltage provided by the charging and discharging port into a DC voltage, and converts the DC The voltage is delivered to the DC power supply, which charges the DC power supply. So that the charging and discharging port can realize the wired charging and wired discharging of the DC power supply under the control of the circuit board. In this way, the bidirectional charging headlamp can be charged by the DC power supply to the bidirectional charging headlamp through the charging cable, and the bidirectional charging headlamp can also be charged to other devices through the charging cable, thus realizing the wired charging and wired discharging of the bidirectional charging headlamp. , the charging and discharging mode of the two-way charging headlight is added, which makes the use scenarios of the two-way charging headlight more diverse and meets the various needs of users.

Another switching unit may also be set in the circuit board, which is set as an output to switch the working state of wired charging and discharging. Both of the two switching units can be set in the circuit board, and can be set to set the state of the switching units according to actual needs.

Optionally, the switching unit 60 is provided with a selection switch, and the switching unit 60 is configured to output the wireless discharge mode selection signal or the wireless charging mode selection signal according to the position of the selection switch, and transmit the output wireless discharge mode selection signal or the wireless charging mode selection signal. to the control unit 10.

When the bidirectional charging headlamp has four working modes: wired charging and discharging and wireless charging and discharging, the switching unit 60 is configured to output the wired discharging mode selection signal and wired charging mode selection signal according to the position of the selection switch, and output the wired discharging mode selection signal. The mode selection signal and the wired charging mode selection signal are sent to the control unit 10 .

Optionally, the first switch unit 20 includes a first switch transistor Q1, and the second switch unit 30 includes a second switch transistor Q2. The first switch transistor Q1 and the second switch transistor Q2 can both be N-type MOS switch transistors or NPN-type transistors. By controlling the potentials of the control terminals of the first switch transistor Q1 and the second switch transistor Q2, the first switch transistor Q1 is realized. and the state control of the second switch tube Q2.

Optionally, the inverter unit 40 includes: a single-phase full-bridge inverter circuit 401, the control terminal of the single-phase full-bridge inverter circuit 401 is connected to the control unit 10, and the input terminal of the single-phase full-bridge inverter circuit 401 is connected to the DC power supply 3 connection, the first output terminal of the single-phase full-bridge inverter circuit 401 is connected to the first terminal of the first switching unit 20 , and the second output terminal of the single-phase full-bridge inverter circuit 401 and the discharge coil are away from the first switching unit 20 one end of the connection.

The rectification unit 50 includes: a single-phase full-wave rectification circuit 501 and a filter circuit 502, the single-phase full-wave rectification circuit 501 includes a transformer T, a first diode D1 and a second diode D2, and the transformer T is provided with a first output end , the second output terminal and the third output terminal, the second output terminal is grounded; the positive terminal of the first diode D1 is connected to the first output terminal, the positive terminal of the second diode D2 is connected to the third output terminal, and the first diode D1 is connected to the first output terminal. The negative terminal of a diode D1 is connected to the negative terminal of the second diode D2, and there is a first node between the negative terminal of the first diode D1 and the negative terminal of the second diode D2;

The filter circuit 502 includes a filter inductor L0 and a filter capacitor C0, the first end of the filter inductor L0 is connected to the first node, the second end of the filter inductor L0 is connected to the positive terminal of the DC power supply; the first end of the filter capacitor C0 is connected to the filter inductor The second end of L0 is connected, and the second end of the filter capacitor C0 is grounded.

Optionally, the circuit board 21 further includes: a first feedback circuit 710 and a second feedback circuit 720, the first feedback circuit 710 is connected between the discharge coil and the control unit 10, and the second feedback circuit 720 is connected between the charging coil and the control unit 10, the first feedback circuit 710 is set to detect the current flowing through the discharge coil and send the detection result to the control unit 10; the second feedback circuit is set to detect the current flowing through the charging coil and send the detection result to the control unit 10 unit 10.

In other embodiments, the circuit board 21 further includes a third feedback circuit, the third feedback circuit is connected between the charging and discharging port 4 and the control unit 10 , and the third feedback circuit is configured to detect the current flowing through the charging and discharging port 4 , and The detection result is sent to the control unit 10 .

Optionally, the circuit board further includes: a DC-DC conversion unit 80, a first end of the DC-DC conversion unit 80 is connected to the DC power source, and a second end of the DC-DC conversion unit 80 is connected to the inverter unit 40 and the rectifier unit 50 connected separately.

Optionally, the circuit board further includes: a power detection unit 90, the detection terminal of the power detection unit 90 is connected to the DC power supply, the output terminal of the power detection unit 90 is connected to the control unit 10, and the power detection unit 90 is configured to detect the remaining power of the DC power supply. power, and send the remaining power to the control unit 10;

The control unit 10 stores a preset power threshold, and the control unit 10 is further configured to control the first switch unit 20 to turn off when the remaining power is lower than the preset power threshold.

When the circuit board includes the third switch unit, the control unit 10 simultaneously controls the third switch unit to be turned off.

Optionally, the housing 1 includes:

The bottom case 11, the upper end of the bottom case 11 is open and provided, the bottom wall of the bottom case 11 is provided with a matching groove 111, and the charging coil and the discharging coil are arranged in the matching groove 111;

The cover case 12, the lower end of the cover case 12 is open and disposed, and the cover case 12 is buckled on the bottom case 11.

Optionally, the outer side of the discharge coil is covered with a discharge insulating layer 6 , and the outer side of the charging coil is covered with a charging insulating layer 5 .

Optionally, the discharge insulating layer 6 and the charging insulating layer 5 are integrally formed.

Optionally, the inner side wall of the bottom case 11 is provided with a snap ring 112, and the cover case 12 is provided with a first snap protrusion 121 matched with the snap ring 112, and the first snap protrusion 121 is snapped against the snap ring 112 to make the bottom The open end of the shell 11 abuts on the open end of the cover shell 12 to form a first waterproof structure.

Optionally, the open end of the bottom case 11 is provided with a snap groove 113 , the cover case 12 is provided with a second snap protrusion 122 matched with the snap groove 113 , and the second snap protrusion 122 fits in the snap groove 113 . Adhesive is filled between the two snap protrusions 122 and the snap groove 113 to form the second waterproof structure.

Optionally, the charging and discharging port 4 includes an interface area 41 formed on the bottom wall of the housing 1 . The interface area 41 is provided with two charging and discharging contacts 42 protruding from the interface area 41 . The charging and discharging contacts 42 for magnetic contacts.

Optionally, the interface area 41 is provided with a limit groove 411 and two guide grooves 412 , the limit groove 411 and the two guide grooves 412 are distributed in an isosceles triangle, and the length direction of the limit groove 411 is the same as that of the guide groove 412 . Vertical setting.

Optionally, the light emitting module 2 further includes a reflector 23 , the housing 1 includes a bottom shell 11 and a cover shell 12 fastened to the bottom shell 11 , the bottom shell 11 is provided with a support bump 114 , and the circuit board 21 is sandwiched between between the support bumps 114 and the reflector 23 .

Optionally, the bidirectional charging headlight further includes:

Hook module 7, the hook module 7 is arranged on the bottom wall of the housing 1, and the hook module 7 is provided with mounting ears 71 and peg holes 72;

The damping shaft 8, one end of the damping shaft 8 is penetrated on the mounting ear 71, and the other end of the damping shaft 8 is connected to the bottom wall of the housing 1; wherein:

The hook module 7 can rotate relative to the damping shaft 8 , and the damping shaft 8 is configured to keep the hook module 7 at a position set at an angle with the bottom wall of the housing 1 .

Claims (39)

1. A bidirectional wireless charging device, comprising: a control unit, a first switch unit, a second switch unit, a discharge coil, a charging coil, an inverter unit, a rectifier unit and a switch unit, wherein,

   The control end of the first switch unit is connected to the control unit, the first end of the first switch unit is connected to the DC power supply through the inverter unit, and the second end of the first switch unit is connected to the DC power supply discharge coil connection;

   The control end of the second switch unit is connected to the control unit, the first end of the second switch unit is connected to the DC power supply through the rectifier unit, and the second end of the second switch unit is connected to the DC power supply. the charging coil connection;

   The control unit is configured to receive the wireless discharge mode selection signal output by the switching unit, control the first switch unit to turn on, control the second switch unit to turn off, and control the inverter unit to turn the direct current The DC voltage output by the power supply is converted into an AC voltage, and the discharge coil is configured to receive the AC voltage and convert electrical energy into magnetic energy for external output;

   The control unit is further configured to receive the wireless charging mode selection signal output by the switching unit, control the first switch unit to be turned off, control the second switch unit to be turned on, and the rectifier unit is configured to turn the charging The AC voltage output by the coil is converted into a DC voltage, and the converted DC voltage is delivered to the DC power source to charge the DC power source.
2. The bidirectional wireless charging device according to claim 1, wherein the first switch unit comprises a first switch tube, and the second switch unit comprises a second switch tube.
3. The bidirectional wireless charging device according to claim 1, wherein the inverter unit comprises: a single-phase full-bridge inverter circuit, a control end of the single-phase full-bridge inverter circuit is connected to the control unit, and the The input end of the single-phase full-bridge inverter circuit is connected to the DC power supply, the first output end of the single-phase full-bridge inverter circuit is connected to the first end of the first switch unit, and the single-phase full-bridge inverter circuit is connected to the first end of the first switch unit. The second output end of the inverter circuit is connected to the end of the discharge coil facing away from the first switch unit.
4. The two-way wireless charging device according to claim 1, wherein the rectifier unit comprises: a single-phase full-wave rectifier circuit and a filter circuit, the single-phase full-wave rectifier circuit comprises a transformer, a first diode and a second second a diode, the transformer is provided with a first output end, a second output end and a third output end, the second output end is grounded; the positive end of the first diode is connected to the first output end, The positive terminal of the second diode is connected to the third output terminal, the negative terminal of the first diode is connected to the negative terminal of the second diode, and the negative terminal of the first diode is connected to the negative terminal of the second diode. There is a first node between the negative terminal and the negative terminal of the second diode;

   The filter circuit includes a filter inductor and a filter capacitor, the first end of the filter inductor is connected to the first node, and the second end of the filter inductor is connected to the positive terminal of the DC power supply; The first end is connected to the second end of the filter inductor, and the second end of the filter capacitor is grounded.
5. The two-way wireless charging device according to any one of claims 1-4, wherein the switching unit is provided with a selection switch, and the switching unit is configured to output the wireless discharge mode selection signal according to the position of the selection switch or the wireless charging mode selection signal, and the outputted wireless discharging mode selection signal or the wireless charging mode selection signal is sent to the control unit.
6. The two-way wireless charging device according to any one of claims 1-4, further comprising: a first feedback circuit and a second feedback circuit, the first feedback circuit being connected between the discharge coil and the control unit , the second feedback circuit is connected between the charging coil and the control unit, and the first feedback circuit is configured to detect the current flowing through the discharge coil, and send the detection result to the control unit; The second feedback circuit is configured to detect the current flowing through the charging coil and send the detection result to the control unit.
7. The bidirectional wireless charging device according to any one of claims 1-4, further comprising: a DC-DC conversion unit, a first end of the DC-DC conversion unit is connected to the DC power source, the DC-DC conversion unit The second end of the conversion unit is connected to the inverter unit and the rectifier unit, respectively.
8. The two-way wireless charging device according to any one of claims 1-4, further comprising a power detection unit, a detection end of the power detection unit is connected to the DC power supply, and an output end of the power detection unit is connected to the DC power supply. a control unit is connected, and the power detection unit is configured to detect the remaining power value of the DC power supply, and send the remaining power value to the control unit;

   The control unit stores a preset power threshold, and the control unit is further configured to control the first switch unit to turn off when the remaining power value is lower than the preset power threshold.
9. A bidirectional charging headlamp, comprising the bidirectional wireless charging device according to any one of claims 1-8, and a DC power supply connected to the bidirectional wireless charging device.
10. A bidirectional wireless charging control method for controlling the operation of the bidirectional wireless charging device according to any one of claims 1-8, the bidirectional wireless charging device comprising a control unit, a first switch unit, a second switch unit, a discharge A coil, a charging coil, an inverter unit, a rectifier unit and a switching unit, and the control method includes:

    Get the mode selection signal;

    When the mode selection signal is the wireless discharge mode selection signal, the first switch unit is controlled to be turned on, the second switch unit is controlled to be turned off, and the inverter unit is controlled to output the DC voltage of the DC power supply Converting into AC voltage, and delivering the AC voltage to the discharge coil, and converting electrical energy into magnetic energy for external output;

    When the mode selection signal is a wireless charging mode selection signal, the first switch unit is controlled to be turned off, the second switch unit is controlled to be turned on, and the rectifier unit is controlled to switch the alternating current output from the charging coil. The voltage is converted to a DC voltage, and the converted DC voltage is delivered to the DC power source to charge the DC power source.
11. A bidirectional charging headlamp, comprising:

    a casing, wherein a mounting cavity is defined in the casing;

    a light-emitting module, the light-emitting module is arranged in the casing, and the light-emitting module includes a circuit board and a light-emitting element arranged on the circuit board;

    a DC power supply, the DC power supply is arranged in the housing, and the DC power supply is electrically connected to the circuit board;

    a charging and discharging port, the charging and discharging port is electrically connected to the circuit board, and the charging and discharging port is configured for wired charging of the DC power supply or wired discharging of the DC power supply;

    a discharge coil, the discharge coil is arranged in the installation cavity and is electrically connected to the circuit board, and the discharge coil is arranged for wireless discharge of the DC power supply;

    A charging coil is provided in the installation cavity and is electrically connected with the circuit board, and the charging coil is provided for wireless charging of the DC power supply.
12. The two-way charging headlamp of claim 11, wherein the housing comprises:

    a bottom case, the upper end of the bottom case is open and disposed, a matching groove is provided on the bottom wall of the bottom case, and the charging coil and the discharging coil are arranged in the matching groove;

    A cover case, the lower end of the cover case is open and disposed, and the cover case is fastened on the bottom case.
13. The bidirectional charging headlamp according to claim 12, wherein the outer side of the discharge coil is covered with a discharge insulating layer, and the outer side of the charging coil is covered with a charging insulating layer.
14. The bidirectional charging headlamp according to claim 13, wherein the discharge insulating layer and the charging insulating layer are integrally formed.
15. The bidirectional charging headlamp according to claim 12, wherein a snap ring is provided on the inner side wall of the bottom case, a first snap protrusion matched with the snap ring is provided on the cover case, and the first snap ring is provided on the cover case. The snap protrusion is snapped against the snap ring so that the open end of the bottom case abuts on the open end of the cover case to form a first waterproof structure.
16. The bidirectional charging headlamp according to claim 12, wherein the open end of the bottom case is provided with a clamping groove, the cover case is provided with a second clamping protrusion matched with the clamping groove, the first The two snap projections are fitted in the snap slot, and an adhesive is filled between the second snap projection and the snap slot to form a second waterproof structure.
17. The bidirectional charging headlamp according to claim 11 , wherein the charging and discharging port comprises an interface area formed on the bottom wall of the housing, and the interface area is provided with two protruding areas on the interface area. The charging and discharging contacts are magnetic contacts.
18. The bidirectional charging headlamp according to claim 17, wherein a limit groove and two guide grooves are provided on the interface area, the limit groove and the two guide grooves are distributed in an isosceles triangle, and the limit groove and the two guide grooves are distributed in an isosceles triangle. The length direction of the bit slot is perpendicular to the length direction of the guide groove.
19. The bidirectional charging headlamp according to any one of claims 11, 17-18, wherein the light emitting module further comprises a reflector, and the housing comprises a bottom case and a cover fastened on the bottom case The bottom case is provided with a support bump, and the circuit board is sandwiched between the support bump and the reflector.
20. The bidirectional charging headlamp according to any one of claims 12-16, wherein the light-emitting module further comprises a reflector, the bottom case is provided with a support bump, and the circuit board is sandwiched between the between the support bump and the reflector.
21. The bidirectional charging headlamp according to any one of claims 11-18, further comprising:

    a hook module, the hook module is arranged on the bottom wall of the casing, and the hook module is provided with mounting ears and a peg hole;

    a damping rotating shaft, one end of the damping rotating shaft is penetrated on the mounting ear, and the other end of the damping rotating shaft is connected to the bottom wall of the casing; wherein,

    The hook module is rotatable relative to the damping shaft, and the damping shaft is configured to hold the hook module at a position provided at an angle with the bottom wall of the housing.
22. A bidirectional charging headlamp, comprising:

    a casing, wherein a mounting cavity is defined in the casing;

    a light-emitting module, the light-emitting module is arranged in the casing, and the light-emitting module includes a circuit board and a light-emitting element arranged on the circuit board;

    a DC power supply, the DC power supply is arranged in the housing, and the DC power supply is electrically connected to the circuit board;

    a charging and discharging port, the charging and discharging port is electrically connected to the circuit board, and the charging and discharging port is configured for wired charging of the DC power supply or wired discharging of the DC power supply;

    a discharge coil, the discharge coil is arranged in the installation cavity and is electrically connected to the circuit board, and the discharge coil is arranged for wireless discharge of the DC power supply;

    a charging coil, the charging coil is arranged in the installation cavity and is electrically connected to the circuit board, and the charging coil is arranged for wireless charging of the DC power supply;

    The circuit board includes a control unit, a first switch unit, a second switch unit, an inverter unit, a rectifier unit, and a switch unit, wherein a control end of the first switch unit is connected to the control unit, and the first switch unit is connected to the control unit. The first end of the switch unit is connected to the DC power supply through the inverter unit, and the second end of the first switch unit is connected to the discharge coil;

    The control end of the second switch unit is connected to the control unit, the first end of the second switch unit is connected to the DC power supply through the rectifier unit, and the second end of the second switch unit is connected to the DC power supply. the charging coil connection;

    The control unit is configured to receive the wireless discharge mode selection signal output by the switch unit, control the first switch unit to turn on, control the second switch unit to turn off, and control the inverter unit to turn the direct current The DC voltage output by the power supply is converted into an AC voltage, and the discharge coil is configured to receive the AC voltage and convert electrical energy into magnetic energy for external output;

    The control unit is further configured to receive the wireless charging mode selection signal output by the switching unit, control the first switch unit to be turned off, control the second switch unit to be turned on, and the rectifier unit is configured to charge the charging The AC voltage output by the coil is converted into a DC voltage, and the converted DC voltage is delivered to the DC power supply to charge the DC power supply.
23. The bidirectional charging headlamp according to claim 22, wherein the first switch unit comprises a first switch tube, and the second switch unit comprises a second switch tube.
24. The bidirectional charging headlamp according to claim 22, wherein the inverter unit comprises: a single-phase full-bridge inverter circuit, a control end of the single-phase full-bridge inverter circuit is connected to the control unit, the The input end of the single-phase full-bridge inverter circuit is connected to the DC power supply, the first output end of the single-phase full-bridge inverter circuit is connected to the first end of the first switch unit, and the single-phase full-bridge inverter circuit is connected to the first end of the first switch unit. The second output end of the inverter circuit is connected to the end of the discharge coil facing away from the first switch unit.
25. The bidirectional charging headlamp according to claim 22, wherein the rectifier unit comprises: a single-phase full-wave rectifier circuit and a filter circuit, the single-phase full-wave rectifier circuit comprising a transformer, a first diode and a second two a diode, the transformer is provided with a first output end, a second output end and a third output end, the second output end is grounded; the positive end of the first diode is connected to the first output end, The positive terminal of the second diode is connected to the third output terminal, the negative terminal of the first diode is connected to the negative terminal of the second diode, and the negative terminal of the first diode is connected to the negative terminal of the second diode. There is a first node between the negative terminal and the negative terminal of the second diode;

    The filter circuit includes a filter inductor and a filter capacitor, the first end of the filter inductor is connected to the first node, and the second end of the filter inductor is connected to the positive terminal of the DC power supply; The first end is connected to the second end of the filter inductor, and the second end of the filter capacitor is grounded.
26. The bidirectional charging headlamp according to any one of claims 22-25, wherein the switching unit is provided with a selection switch, and the switching unit is configured to output the wireless discharge mode selection signal according to the position of the selection switch or the wireless charging mode selection signal, and the outputted wireless discharging mode selection signal or the wireless charging mode selection signal is sent to the control unit.
27. The bidirectional charging headlamp according to any one of claims 22-25, wherein the circuit board further comprises: a first feedback circuit and a second feedback circuit, the first feedback circuit being connected to the discharge coil and the Between the control units, the second feedback circuit is connected between the charging coil and the control unit, and the first feedback circuit is configured to detect the current flowing through the discharge coil and send the detection result to the control unit; the second feedback circuit is configured to detect the current flowing through the charging coil and send the detection result to the control unit.
28. The bidirectional charging headlamp according to any one of claims 22-25, wherein the circuit board further comprises: a DC-DC conversion unit, a first end of the DC-DC conversion unit is connected to the DC power supply , the second end of the DC-DC conversion unit is connected to the inverter unit and the rectifier unit respectively.
29. The bidirectional charging headlamp according to any one of claims 22-25, wherein the circuit board further comprises: a power supply detection unit, a detection end of the power supply detection unit is connected to the DC power supply, and the power supply detects The output end of the unit is connected to the control unit, and the power detection unit is configured to detect the remaining power value of the DC power supply, and send the remaining power value to the control unit;

    The control unit stores a preset power threshold, and the control unit is further configured to control the first switch unit to turn off when the remaining power value is lower than the preset power threshold.
30. The two-way charging headlamp of claim 22, wherein the housing comprises:

    a bottom case, the upper end of the bottom case is open and disposed, a matching groove is provided on the bottom wall of the bottom case, and the charging coil and the discharging coil are arranged in the matching groove;

    A cover case, the lower end of the cover case is open and disposed, and the cover case is fastened on the bottom case.
31. The bidirectional charging headlamp according to claim 30, wherein the outer side of the discharge coil is covered with a discharge insulating layer, and the outer side of the charging coil is covered with a charging insulating layer.
32. The bidirectional charging headlamp according to claim 31, wherein the discharge insulating layer and the charging insulating layer are integrally formed.
33. The bidirectional charging headlamp according to claim 30, wherein a snap ring is provided on the inner side wall of the bottom case, a first snap protrusion matched with the snap ring is provided on the cover case, and the first snap ring is provided on the cover case. The snapping protrusion is snapped against the snap ring so that the open end of the bottom case abuts on the open end of the cover shell to form a first waterproof structure.
34. The bidirectional charging headlamp according to claim 30, wherein the open end of the bottom case is provided with a clamping groove, the cover case is provided with a second clamping protrusion matched with the clamping groove, the first Two snap protrusions fit in the snap groove, and an adhesive is filled between the second snap protrusion and the snap groove to form a second waterproof structure.
35. The bidirectional charging headlamp according to claim 22, wherein the charging and discharging port comprises an interface area formed on the bottom wall of the housing, and the interface area is provided with two protrudingly disposed on the interface area. The charging and discharging contacts on the device are magnetic contacts.
36. The bidirectional charging headlamp according to claim 35, wherein a limit groove and two guide grooves are provided on the interface area, the limit groove and the two guide grooves are distributed in an isosceles triangle, and the limit groove and the two guide grooves are distributed in an isosceles triangle. The length direction of the bit slot is perpendicular to the length direction of the guide groove.
37. The bidirectional charging headlamp according to any one of claims 22, 35-36, wherein the light emitting module further comprises a reflector, and the housing comprises a bottom case and a cover fastened on the bottom case The bottom case is provided with a support bump, and the circuit board is sandwiched between the support bump and the reflector.
38. The bidirectional charging headlamp according to any one of claims 30-34, wherein the light emitting module further comprises a reflector, the bottom case is provided with a support bump, and the circuit board is sandwiched between the between the support bump and the reflector.
39. The bidirectional charging headlamp according to any one of claims 22, 30-36, further comprising:

    a hook module, the hook module is arranged on the bottom wall of the casing, and the hook module is provided with mounting ears and peg holes;

    a damping rotating shaft, one end of the damping rotating shaft is penetrated on the mounting ear, and the other end of the damping rotating shaft is connected to the bottom wall of the casing; wherein,

    The hook module is rotatable relative to the damping shaft, and the damping shaft is configured to hold the hook module at a position provided at an angle with the bottom wall of the housing.

Images