Illuminating system for charging port of electric vehicle

Abstract

The utility model discloses an electric vehicle charging port lighting system, which relates to the field of light control, and comprises a control module, a power supply module, a driving module, a lighting module and a detection module which are adaptively connected, the detection module is used for detecting the opening and closing state of the charging port cover and generating a detection signal according to the opening and closing state of the charging port cover; based on the detection signal, the control module controls the working state of the lighting module through the driving module. According to the lighting system, the lighting problem of the charging port of the two-wheeled vehicle is solved with low cost, and the market universality is high.

Description

An electric vehicle charging port lighting system Technical Field

[0001] This utility model relates to the field of lighting control, and in particular to a lighting system for an electric vehicle charging port. Background Technology

[0002] With the current development of the two-wheeled vehicle industry, the number of electric vehicles in the market has exceeded 300 million. Electric vehicles are often used for commuting, and when charging at night or in low-light areas, it is often difficult to locate the charging port, making vehicle use inconvenient. Currently, there is no widely applicable charging port light control solution on the market, and how to achieve low-cost and high-reliability control of the charging port light is an urgent problem to be solved. Summary of the Invention

[0003] In response to the aforementioned problems and technical requirements, the applicant has proposed an electric vehicle charging port lighting system.

[0004] The technical solution of this utility model is as follows:

[0005] An electric vehicle charging port lighting system includes a control module, a power supply module, a drive module, a lighting module, and a detection module that are adapted and connected.

[0006] The power module is used to supply power to the drive module, lighting module and detection module. The detection module is used to detect the open / closed state of the charging port cover and generate a detection signal based on the open / closed state of the charging port cover.

[0007] Based on the detection signal, the control module controls the working state of the lighting module through the drive module.

[0008] A further technical solution is that the detection module is used to generate a first-level detection signal when the charging port cover is opened, and the detection module is used to generate a second-level detection signal when the charging port cover is closed.

[0009] A further technical solution is that the detection module includes a Hall switch HR1 and a resistor R7, wherein,

[0010] The power supply pin of the Hall switch HR1 is connected to the power supply module, the output pin of the Hall switch HR1 is connected to the control module, the output pin of the Hall switch HR1 is also connected to the power supply pin of the Hall switch HR1 through resistor R7, and the ground pin of the Hall switch HR1 is grounded.

[0011] A further technical solution is that the charging port cover is connected to the charging port base via a charging port cover pivot, and the charging port base is used to define the charging port.

[0012] A magnet is installed inside the charging port cover, and the Hall switch HR1 corresponds to the position of the magnet inside the charging port cover.

[0013] A further technical solution is that the power module includes resistors R1, R2, R3, and R5, a diode D5, a Zener diode D6, capacitors C1, C2, C3, and C4, and a switching transistor Q1, wherein...

[0014] The anode of diode D5 is connected to the input power supply, the cathode of diode D5 is connected to resistor R2 and one end of resistor R5, the other end of resistor R2 is connected to the third electrode of switch Q1, and resistor R3 is connected in parallel with resistor R2.

[0015] One end of the resistor R1 is connected to the third electrode of the switching transistor Q1, and the other end of the resistor R1 is connected to the first electrode of the switching transistor Q1. The first electrode of the switching transistor Q1 is also connected to one end of the capacitor C1 to form a power output terminal. The other end of the capacitor C1 is grounded. The capacitors C2 and C3 are both connected in parallel with the capacitor C1.

[0016] A further technical solution is that the anode of the Zener diode D6 is grounded, the cathode of the Zener diode D6 is connected to the other end of the resistor R5, one end of the capacitor C4 and the second electrode of the switching transistor Q1, and the other end of the capacitor C4 is grounded.

[0017] A further technical solution is that the control module includes a control chip U1 and a capacitor C5, wherein,

[0018] The control chip U1 is model SOP8 HS23P1820. Control chip U1 includes VDD pin, VSS pin, PB5 pin, and PB0 pin.

[0019] The VDD pin is connected to the power output terminal of the power module. The VDD pin is connected to the VSS pin through capacitor C5. The VSS pin is grounded. The PB5 pin is connected to the output pin of Hall switch HR1.

[0020] A further technical solution is that the driving module includes a resistor R7, a switching transistor Q2, and a resistor R10, wherein,

[0021] One end of the resistor R7 is connected to the PB0 pin of the control chip U1, the other end of the resistor R7 is connected to the second electrode of the switching transistor Q2, the first electrode of the switching transistor Q2 is grounded through the resistor R10, and the third electrode of the switching transistor Q2 is connected to the lighting module.

[0022] A further technical solution is that the switching transistors Q1 and Q2 are triodes.

[0023] A further technical solution is that the lighting module includes a charging port light, which includes multiple LEDs connected in series.

[0024] The beneficial technical effects of this utility model are:

[0025] The charging port lighting system provided by this utility model detects the opening and closing status of the charging port cover using a Hall switch, and controls the working state of the lighting module according to the opening and closing status of the charging port cover. This illuminates the charging port when the user is using it, improving the user experience. Furthermore, this system uses a wide power supply range and has a simple and easy-to-implement circuit structure, solving the lighting problem of two-wheeled vehicle charging ports at a low cost, and has high market applicability. Attached Figure Description

[0026] Figure 1 is a structural block diagram of an embodiment of the electric vehicle charging port lighting system provided by this utility model.

[0027] Figure 2 is a schematic diagram of one embodiment of the electric vehicle charging port structure provided by this utility model.

[0028] Figure 3 is a circuit diagram of one embodiment of the detection module provided by this utility model.

[0029] Figure 4 is a circuit diagram of one embodiment of the power module provided by this utility model.

[0030] Figure 5 is a circuit diagram of one embodiment of the control module provided by this utility model.

[0031] Figure 6 is a circuit diagram of one embodiment of the lighting module and driving module provided by this utility model.

[0032] Figure 7 is a working logic diagram of an embodiment of the charging port lighting system provided by this utility model.

[0033] Attached reference numerals: 1-Charging port cover, 2-Magnet, 3-Charging port base, 4-Charging port cover hinge, 5-Charging port, 6-Charging port mounting hole, 7-Charging port light-emitting surface. Detailed Implementation

[0034] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this disclosure.

[0035] This utility model provides an electric vehicle charging port lighting system, as shown in Figure 1, including a control module, a power supply module, a drive module, a lighting module, and a detection module that are adapted and connected.

[0036] The power module is used to supply power to the drive module, the lighting module and the detection module. The detection module is used to detect the opening and closing state of the charging port cover 1 and generate a detection signal based on the opening and closing state of the charging port cover 1.

[0037] Based on the detection signal, the control module controls the working state of the lighting module through the drive module.

[0038] Specifically, the power module is connected to the drive module, lighting module, and detection module; the control module is connected to the detection module and drive module; and the drive module is connected to the lighting module. As shown in Figure 2, the charging port cover 1 is connected to the charging port base 3 via a charging port cover pivot 4. The charging port base 3 defines the charging port 5, and the charging port 5 has a charging port mounting hole 6. Typically, bolts are used to fix the charging port 5 to the charging port base 3 through the mounting hole. The charging port cover 1 can rotate around the charging port cover pivot 4 to open and close the charging port cover 1. When the charging port cover 1 is closed, it prevents dust, moisture, etc., from entering the charging port 5, thus protecting the charging port 5. It is understood that the user needs to open the charging port cover 1 when using the charging port 5 and close it when not using the charging port 5. Therefore, the charging port 5 needs to be illuminated when the charging port cover 1 is open to facilitate user access to the charging port 5.

[0039] The detection module generates a first-level detection signal when the charging port cover 1 is open, and a second-level detection signal when the charging port cover 1 is closed. In this embodiment, the first level is high, and the second level is low. The control module generates a control signal based on the detection signal, and uses the control signal to control the drive module. When the detection signal is high, the control module generates a high-level control signal, which controls the drive module to drive the lighting module, illuminating the charging port 5 for user convenience. Conversely, when the detection signal is low, the control module generates a low-level control signal, and the drive module does not drive the lighting module.

[0040] The lighting module includes a charging port light, which comprises multiple LEDs connected in series. It is understood that the charging port light is positioned near the charging port 5 to illuminate it. In this embodiment, the charging port light is positioned below the charging port 5. In specific implementations, the exact position of the charging port light can be set according to actual conditions, ensuring that the charging port 5 is illuminated when the light is on.

[0041] Further, as shown in Figure 3, the detection module includes a Hall switch HR1 and a resistor R7. The power supply pin (VCC) of the Hall switch HR1 is connected to the power supply module, and the output pin (OUT) of the Hall switch HR1 is connected to the control module. The output pin of the Hall switch HR1 is also connected to the power supply pin of the Hall switch HR1 through the resistor R7. The ground pin (GND) of the Hall switch HR1 is grounded. A magnet 2 is disposed inside the charging port cover 1, and the position of the Hall switch HR1 corresponds to that of the magnet 2 inside the charging port cover 1.

[0042] The Hall switch HR1 corresponds to the position of the magnet 2 inside the charging port cover 1. Specifically, the position of the Hall switch HR1 can sense the magnetic field changes of the magnet 2 inside the charging port cover 1. When the charging port cover 1 is closed, the Hall switch HR1 detects a higher magnetic field strength and outputs a low-level detection signal to the control module; when the charging port cover 1 is open, the Hall switch HR1 detects a lower magnetic field strength and outputs a high-level detection signal to the control module. The detection signal is the Hall signal output by the output pin of the Hall switch HR1. The model of the Hall switch can be CC6207SOT-23. As shown in Figure 2, in this embodiment, the magnet 2 is embedded in the charging port cover 2. When the charging port cover 2 is closed, the magnet 2 overlaps with the light-emitting surface 7 of the charging port lamp. The Hall switch HR1 is installed directly below the light-emitting surface 7 of the charging port lamp to sense the magnetic field changes of the magnet 2.

[0043] Furthermore, the power module includes resistors R1, R2, R3, and R5, diode D5, Zener diode D6, capacitors C1, C2, C3, and C4, and switching transistor Q1. The anode of diode D5 is connected to the input power supply, the cathode of diode D5 is connected to resistor R2 and one end of resistor R5, the other end of resistor R2 is connected to the third electrode of switching transistor Q1, and resistor R3 is connected in parallel with resistor R2.

[0044] One end of resistor R1 is connected to the third electrode of switching transistor Q1, and the other end of resistor R1 is connected to the first electrode of switching transistor Q1. The first electrode of switching transistor Q1 is also connected to one end of capacitor C1 to form a power output terminal. The other end of capacitor C1 is grounded. Capacitors C2 and C3 are both connected in parallel with capacitor C1. The anode of Zener diode D6 is grounded, and the cathode of Zener diode D6 is connected to the other end of resistor R5, one end of capacitor C4, and the second electrode of switching transistor Q1. The other end of capacitor C4 is grounded.

[0045] The diode D5 is a reverse-current protection diode. The cathode of diode D5 is connected to one end of resistors R2, R3, and R5 to form a connection node. The input power supply can be provided by the vehicle, which can be the vehicle's battery power or backup power, or the power obtained by converting the battery power or backup power through a voltage converter. In this embodiment, the switching transistor Q1 is an NPN transistor. For a transistor, the first electrode is the emitter, the second electrode is the base, and the third electrode is the collector. The power module converts the input power voltage into a 5V power supply voltage and outputs it from the power output terminal. The power pin of the Hall switch HR1 is connected to the power output terminal to receive the 5V power supply voltage.

[0046] As shown in Figure 5, the control module includes a control chip U1 and a capacitor C5. The control chip U1 is an SOP8 HS23P1820 and includes VDD, VSS, PB5, and PB0 pins.

[0047] The VDD pin is connected to the power output terminal of the power module. The VDD pin is connected to the VSS pin through capacitor C5, and the VSS pin is grounded. The PB5 pin is connected to the output pin of Hall switch HR1. The PB5 pin is used to receive the detection signal output by Hall switch HR1, and the PB0 pin is used to output control signals to the drive module.

[0048] As shown in Figure 6, the driving module includes a resistor R7, a switching transistor Q2, and a resistor R10. One end of the resistor R7 is connected to the PB0 pin of the control chip U1, and the other end of the resistor R7 is connected to the second electrode of the switching transistor Q2. The first electrode of the switching transistor Q2 is grounded through the resistor R10, and the third electrode of the switching transistor Q2 is connected to the lighting module.

[0049] In this embodiment, the switching transistor Q2 is an NPN transistor. When Q2 is a transistor, the definitions of its first to third electrodes are the same as described above and will not be repeated here. In this embodiment, the charging port lamp contains five LEDs, LED1-LED5. The positive terminal of LED1 is connected to the aforementioned connection node and connected to the input power supply. LEDs 1-LED5 are connected in series, and the negative terminal of LED5 is connected to the third electrode of the switching transistor Q2. Resistor R7 is a driving resistor, and resistor R10 is a current-controlling resistor. The switching transistor Q2, the driving resistor, and the current-controlling resistor form a linear constant current driving circuit, which can control the current of LEDs 1-LED5 to be constant.

[0050] The specific working principle of the driving module is as follows: When the control signal, i.e., the LED-CTRL signal shown in Figure 5, is high, current is provided to the base of the switching transistor Q2 through resistor R7, causing Q2 to conduct. After Q2 is turned on, current flows through each LED in sequence, lighting up LED1-LED5. When the LED-CTRL signal is low, Q2 is turned off, cutting off the current and turning off LED1-LED5.

[0051] In practical applications, the charging port cover 1 may always be in the open state. If the lighting is provided continuously when the charging port cover 1 is open, it may cause excessive power consumption. Therefore, in another embodiment of this application, the control module starts timing while controlling the charging port light to be lit, and controls the charging port light to be turned off when the lighting time of the charging port light exceeds the preset time.

[0052] Figure 7 illustrates the control logic of the charging port lamp provided by this application based on the above lighting system. As shown in Figure 7, the system is initialized after power-on. During the initialization process, the PB0 pin of the MCU, i.e. the control chip U1, is forced to output a low-level control signal to prevent the charging port lamp from being accidentally lit when powered on.

[0053] After system initialization, Hall switch HR1 continuously detects the magnetic field strength, and the MCU continuously judges the level of the detection signal. When the charging port cover 1 is closed and the magnetic field strength is high, Hall switch HR1 outputs a low-level detection signal. Upon receiving the low-level detection signal, the MCU outputs a low-level control signal, and the charging port indicator light does not illuminate. When the charging port cover 1 is open and the magnetic field strength is low, Hall switch HR1 outputs a high-level detection signal. Upon receiving the high-level detection signal, the MCU outputs a high-level control signal, driving the charging port indicator light to illuminate and starting a timer within the MCU. Simultaneously, the MCU checks whether the detection signal output by Hall switch HR1 returns to a low level. When the detection signal returns to a low level, the MCU outputs a low-level control signal to turn off the charging port indicator light and simultaneously resets the timer. This process repeats after system initialization. When the detection signal remains high, the MCU determines whether the timer has exceeded a preset time, which can be set to 60 seconds. When the timer exceeds the preset time, the MCU outputs a low-level control signal to turn off the charging port indicator light and simultaneously resets the timer. This process repeats after system initialization.

[0054] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. The use of terms such as "an embodiment / mode" means that a specific feature, structure, or characteristic described in connection with that embodiment is included in at least one embodiment / mode of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment / mode or example. In the description of this application, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0055] Those skilled in the art should understand that the above embodiments are merely for clearly illustrating this disclosure and are not intended to limit the scope of this disclosure. Any other improvements and variations directly derived or conceived by those skilled in the art without departing from the spirit and concept of this utility model should be considered to be included within the protection scope of this utility model.

Claims

1. A lighting system for an electric vehicle charging port, characterized in that, The system includes a control module, a power module, a drive module, a lighting module, and a detection module that are adapted for connection. The power module supplies power to the drive module, the lighting module, and the detection module. The detection module detects the open / closed state of the charging port cover and generates a detection signal based on the open / closed state of the charging port cover. Based on the detection signal, the control module controls the operating state of the lighting module through the drive module.

2. The electric vehicle charging port lighting system according to claim 1, characterized in that, The detection module is used to generate a first-level detection signal when the charging port cover is open, and the detection module is used to generate a second-level detection signal when the charging port cover is closed.

3. The electric vehicle charging port lighting system according to claim 1, characterized in that, The detection module includes a Hall switch HR1 and a resistor R7. The power supply pin of the Hall switch HR1 is connected to the power supply module, the output pin of the Hall switch HR1 is connected to the control module, the output pin of the Hall switch HR1 is also connected to the power supply pin of the Hall switch HR1 through the resistor R7, and the ground pin of the Hall switch HR1 is grounded.

4. The electric vehicle charging port lighting system according to claim 3, characterized in that, The charging port cover is connected to the charging port base via a charging port cover pivot, and the charging port base is used to define the charging port; a magnet is provided inside the charging port cover, and the position of the Hall switch HR1 corresponds to that of the magnet inside the charging port cover.

5. The electric vehicle charging port lighting system according to claim 3, characterized in that, The power module includes resistors R1, R2, R3, and R5, diode D5, Zener diode D6, capacitors C1, C2, C3, and C4, and a switching transistor Q1. The anode of diode D5 is connected to the input power supply, and the cathode of diode D5 is connected to resistors R2 and one end of resistor R5. The other end of resistor R2 is connected to the third electrode of switching transistor Q1. Resistor R3 is connected in parallel with resistor R2. One end of resistor R1 is connected to the third electrode of switching transistor Q1, and the other end of resistor R1 is connected to the first electrode of switching transistor Q1. The first electrode of switching transistor Q1 is also connected to one end of capacitor C1 to form the power output terminal. The other end of capacitor C1 is grounded. Capacitors C2 and C3 are both connected in parallel with capacitor C1.

6. The electric vehicle charging port lighting system according to claim 5, characterized in that, The anode of the Zener diode D6 is grounded, and the cathode of the Zener diode D6 is connected to the other end of the resistor R5, one end of the capacitor C4, and the second electrode of the switching transistor Q1. The other end of the capacitor C4 is grounded.

7. The electric vehicle charging port lighting system according to claim 5, characterized in that, The control module includes a control chip U1 and a capacitor C5. The control chip U1 is an SOP8 HS23P1820 and includes a VDD pin, a VSS pin, a PB5 pin, and a PB0 pin. The VDD pin is connected to the power output terminal of the power module. The VDD pin is connected to the VSS pin through the capacitor C5. The VSS pin is grounded. The PB5 pin is connected to the output pin of the Hall switch HR1.

8. The electric vehicle charging port lighting system according to claim 7, characterized in that, The driving module includes a resistor R7, a switching transistor Q2, and a resistor R10. One end of the resistor R7 is connected to the PB0 pin of the control chip U1, the other end of the resistor R7 is connected to the second electrode of the switching transistor Q2, the first electrode of the switching transistor Q2 is grounded through the resistor R10, and the third electrode of the switching transistor Q2 is connected to the lighting module.

9. The electric vehicle charging port lighting system according to claim 8, characterized in that, The switching transistors Q1 and Q2 are bipolar transistors.

10. The electric vehicle charging port lighting system according to claim 7, characterized in that, The lighting module includes a charging port light, which comprises multiple LEDs connected in series.

Images