Electric vehicle seat cask lamp control system

Abstract

The utility model discloses an electric vehicle seat cask lamp control system, which relates to the field of light control, and comprises a detection module used for detecting the on-off state of an electric vehicle seat cushion and generating a seat cushion on-off signal SEN; the control module is connected with the detection module and is used for generating a control signal according to the seat cushion switching signal SEN; the driving module is connected with the lighting module and the control module and used for controlling the working state of the lighting module according to the control signal; and the power supply module is connected with the detection module, the control module and the driving module and is used for supplying power to the detection module, the control module and the driving module. The control system is high in automation degree and high in universality, and the illumination problem of the seat cask of the electric vehicle is effectively solved.

Description

An electric vehicle seat bucket light control system Technical Field

[0001] This utility model relates to the field of lighting control, and in particular to a control system for electric vehicle seat bucket lights. 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, making them one of the most popular modes of transportation in China. Electric vehicles are often used for commuting, and items are usually placed in the seat compartment. When riding at night, finding items in the seat compartment requires an additional light source. Currently, some flagship models on the market have begun to be equipped with seat compartment lights, but due to cost factors, the number of models equipped with them is extremely small. Summary of the Invention

[0003] In response to the aforementioned problems and technical requirements, the applicant has proposed a control system for electric vehicle seat bucket lights.

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

[0005] An electric vehicle seat bucket light control system, characterized in that it includes:

[0006] The detection module is used to detect the on / off status of the electric vehicle seat cushion and generate a seat cushion switch signal SEN.

[0007] The control module, connected to the detection module, is used to generate control signals based on the seat cushion switch signal SEN.

[0008] The drive module, connected to the lighting module and the control module, is used to control the working state of the lighting module according to the control signal.

[0009] The power supply module is connected to the detection module, control module, and drive module, and is used to supply power to the detection module, control module, and drive module.

[0010] A further technical solution is that the detection module includes resistor R12, resistor R11, diode D3, capacitor C6, and micro switch SW1;

[0011] One end of resistor R12 is connected to the power module, and the other end of resistor R12 is connected to one end of resistor R11 and the anode of diode D3. The other end of resistor R11 is connected to the control module, and the other end of resistor R11 is grounded through capacitor C6. The cathode of diode D3 is grounded through microswitch SW1.

[0012] A further technical solution is that the micro switch SW1 is a normally open switch, which is installed in the seat lock of the electric vehicle. The micro switch SW1 includes a fixed base, a spring, and contacts.

[0013] The seat lock includes a latch and a hook that are rotatably mounted on the plastic shell of the seat lock. The working state of the seat lock includes a locked state and an unlocked state. When the seat lock is in the locked state, the hook moves the spring to abut the contact point, causing the micro switch SW1 to close.

[0014] A further technical solution is that the power module includes resistors R2, R3, and R5, diode D5, Zener diode D6, capacitors C2, C3, and C4, and a switching transistor Q1, wherein...

[0015] The anode of the diode D5 is connected to the input power supply, the cathode of the diode D5 is connected to resistors R2 and R3 and one end of resistor R5 to form a connection node, and the other end of resistor R2 is connected to the third electrode of the switching transistor Q1 and the other end of resistor R3.

[0016] The first electrode of the switching transistor Q1 is connected to one end of the capacitor C2 to form a power output terminal, the other end of the capacitor C2 is grounded, and the capacitor C3 is connected in parallel with the capacitor C2.

[0017] 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.

[0018] A further technical solution is that the control module includes a control chip U1 and a capacitor C5. The control chip U1 is of model HS23P1820 and 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 other end of resistor R11.

[0020] A further technical solution is that the driving module includes switching transistor Q2, switching transistor Q3, resistor R1, resistor R4, Zener diode D2, resistor R6, and resistor R9, wherein...

[0021] The first electrode of the switching transistor Q2 is connected to the connection node of the power module. The first electrode of the switching transistor Q2 is also connected to the resistor R4 and the cathode of the Zener diode D2. The second electrode of the switching transistor Q2 is connected to the other end of the resistor R4, the anode of the Zener diode D2 and one end of the resistor R6. The third electrode of the switching transistor Q2 is connected to one end of the resistor R1 and the positive terminal of the lighting module.

[0022] The other end of the resistor R6 is connected to the third electrode of the switching transistor Q3, the first electrode of the switching transistor Q3 is grounded, and the second electrode of the switching transistor Q3 is connected to the PB0 pin of the control chip U1 through the resistor R9.

[0023] A further technical solution is that the driving module also includes a resistor R16, a capacitor C7, a capacitor C8, a Schottky diode D7, an inductor L1, and a driving chip U3, wherein the driving chip U3 is of model OC5116L.

[0024] The driver chip U3 includes an S pin, a CS pin, a GND pin, a MODE pin, a VDD pin, and an SW pin.

[0025] The S pin and CS pin are grounded through resistor R16, the GND pin and MODE pin are grounded, the VDD pin is connected to one end of capacitor C7 and the other end of resistor R1, and the other end of capacitor C7 is grounded.

[0026] One end of the capacitor C8 is connected to one end of the resistor R1, the cathode of the Schottky diode D7, and the positive terminal of the lighting module. The other end of the capacitor C8 is grounded. The anode of the Schottky diode D7 is connected to the SW pin and one end of the inductor L1. The other end of the inductor L1 is connected to the negative terminal of the lighting module.

[0027] A further technical solution is that the driving module also includes a resistor R17 and a driving chip U2. The driving chip U2 is an ASC63601 and includes a VIN pin, a DRV pin, a CS pin, and a GND pin.

[0028] The other end of the resistor R1 is connected to the VIN pin, the GND pin is grounded, the CS pin is grounded through the resistor R16, and the DRV pin is connected to the negative terminal of the lighting module.

[0029] A further technical solution is that the lighting module includes a bucket light, which includes multiple LEDs connected in series between the positive and negative terminals.

[0030] A further technical solution is that the switching transistors Q1 and Q3 are transistors, and the switching transistor Q2 is a MOSFET.

[0031] The beneficial technical effects of this utility model are:

[0032] This application utilizes a microswitch embedded within the seat lock to provide feedback on the lock's locked / unlocked status, thereby detecting the seat's open / closed position and controlling the lighting module (i.e., the bucket light) based on this status, thus improving the automation level of the bucket light control. Furthermore, the bucket light control system, using a microswitch within the seat lock to provide feedback on the lock's locked / unlocked status, is compatible with three seat lock unlocking modes: manual pull-lock unlocking, communication-controlled unlocking, and vehicle-side direct-drive unlocking, giving the bucket light control system high versatility. Simultaneously, this control system uses a wide power supply and has a simple and easy-to-implement circuit structure, solving the lighting problem of two-wheeled vehicle bucket seats at a low cost. Attached Figure Description

[0033] Figure 1 is a structural block diagram of an embodiment of the bucket light control system provided by this utility model.

[0034] Figure 2 is a structural schematic diagram of one embodiment of the seat lock provided by this utility model.

[0035] Figure 3 is a circuit diagram of one embodiment of the detection module provided by this utility model.

[0036] Figure 4 is a structural block diagram of an embodiment of the electronic control unlocking structure provided by this utility model.

[0037] Figure 5 is a circuit diagram of one embodiment of the power module provided by this utility model.

[0038] Figure 6 is a circuit diagram of one embodiment of the control module provided by this utility model.

[0039] Figure 7 is a circuit diagram of one embodiment of the driving module provided by this utility model.

[0040] Figure 8 is a circuit diagram of another embodiment of the driving module provided by this utility model.

[0041] Figure 9 is a working logic diagram of an embodiment of the bucket light control system provided by this utility model.

[0042] Reference numerals: 1-Lock hook, 2-Lock hook pivot, 3-Spring piece, 4-Wire harness, 5-Plastic shell, 6-Contact point, 7-Lock pivot, 8-Lock, 9-Pull cable, 10-Spring, 11-Boss, 12-Fixed base, 13-Support frame, 14-Drive shaft, 15-Locking slot, 16-Positioning block. Detailed Implementation

[0043] 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.

[0044] This utility model discloses a control system for the seat bucket light of an electric vehicle, as shown in Figure 1, comprising:

[0045] The detection module is used to detect the on / off status of the electric vehicle seat cushion and generate a seat cushion switch signal SEN.

[0046] The control module, connected to the detection module, is used to generate control signals based on the seat cushion switch signal SEN.

[0047] The drive module, connected to the lighting module and the control module, is used to control the working state of the lighting module according to the control signal.

[0048] The power supply module is connected to the detection module, control module, and drive module, and is used to supply power to the detection module, control module, and drive module.

[0049] Electric two-wheelers typically have a seat for the user to ride on. The seat compartment generally refers to a storage space located under the seat for storing items. The seat has hooks, and the seat compartment has a seat lock. The seat lock has two states: locked and unlocked. When the user closes the seat, the hooks on the seat are locked, and the seat lock changes from the unlocked state to the locked state, securing the seat to the seat compartment and sealing it. When the user wants to open the seat, the seat lock is unlocked, changing from the locked state to the unlocked state. The hooks on the seat are released, allowing the seat to be opened to reveal the interior space of the seat compartment.

[0050] The lighting module includes a bucket light, which is installed inside the bucket to illuminate its interior, facilitating the user's storage or retrieval of items. The specific location of the light can be chosen according to specific circumstances. It is understood that the user will open the seat cushion when using the bucket, therefore, the need for the bucket to be illuminated can be determined by detecting the open / closed state of the seat cushion.

[0051] Specifically, when the detection module detects that the electric vehicle seat is in a closed state, it generates a low-level seat switch signal SEN. The control module generates a low-level control signal based on the low-level seat switch signal SEN, and the drive module does not drive the seat lamp. Conversely, when the detection module detects that the electric vehicle seat is in an open state, it generates a high-level seat switch signal SEN. The control module generates a high-level control signal based on the high-level seat switch signal SEN, and the drive module drives the seat lamp to light up. The specific form and working principle of the detection module, control module, and power supply module can be found in the following description.

[0052] Further, as shown in Figure 3, the detection module includes resistor R12, resistor R11, diode D3, capacitor C6, and micro switch SW1;

[0053] One end of resistor R12 is connected to the power module, and the other end of resistor R12 is connected to one end of resistor R11 and the anode of diode D3. The other end of resistor R11 is connected to the control module, and the other end of resistor R11 forms a signal output terminal. The other end of resistor R11 is grounded through capacitor C6, and the cathode of diode D3 is grounded through microswitch SW1.

[0054] Specifically, the micro switch SW1 is disposed inside the seat lock. The seat lock can be a common type in this technical field. Figure 2 shows a structural schematic diagram of an embodiment of the seat lock. As shown in Figure 2, the seat lock includes a buckle 8 and a hook 1 rotatably disposed on the plastic shell 5 of the seat lock. The hook 1 is rotatably disposed on the plastic shell 5 through a hook pivot 2. The buckle 8 is rotatably disposed on the plastic shell 5 through a buckle pivot 7. A spring 10 is connected between the buckle 8 and the hook 1.

[0055] The seat cushion lock has a locking slot 15. In the locked state, the hook on the seat cushion is inserted into the locking slot 15. The locking hook 1 and the locking buckle 8 rotate and interlock to block the locking slot 15 and lock the hook. The tension of the spring 10 keeps the locking hook 1 pressed against the locking buckle 8 to maintain the locked state, thereby locking the seat cushion. A positioning block 16 is fixed between the locking buckle 8 and the locking hook 1. In the unlocked state, the locking buckle 8 and the locking hook 1 rotate to separate and release the hook. The tension of the spring 10 keeps the locking buckle 8 and the locking hook 1 against the two ends of the positioning block 16 to maintain the unlocked state.

[0056] The seat lock also includes a motor, a drive shaft 14, and a boss 11 fixed on the drive shaft 14. The motor (not shown in the figure) is housed inside the plastic housing 5. An MCU can also be installed inside the seat lock to control the motor. The wiring harness 4 shown in Figure 2 can be used to bring out the power supply lines for the motor and the MCU. The motor drives the drive shaft 14 to rotate, thereby rotating the boss 11. One end of the latch 8 is located on the movement path of the boss 11. The seat lock also includes a pull cable 9, which cooperates with and is fixed to the latch 8.

[0057] The micro switch SW1 is a normally open switch, located inside the plastic housing 5 of the electric vehicle's seat lock. Specifically, the micro switch SW1 is positioned on the side of the lock hook 1 furthest from the latch 8. The micro switch SW1 includes a spring 3, a fixed base 12, and a contact 6. The contact 6 is fixed to the fixed base 12. The fixed base 12 and the lower ends of the spring 3 are fixed to a support frame 13 inside the plastic housing 5. The support frame 13 is positioned on the side of the lock hook 1 furthest from the latch 8. When the mechanical structure at the lower end of the spring 13 is engaged in the locked state, it moves closer to and abuts against the contact 6, closing the micro switch SW1. In the absence of external force, the spring 3 remains separated from the contact 6, and the micro switch SW1 remains open.

[0058] When the seat is closed, the seat lock is locked. In the locked state, the locking hook 1 and the locking buckle 8 rotate and interlock. The mechanical structure at the lower end of the locking buckle 8 rotates towards the side closer to the spring 3, causing the spring 3 to move closer to and abut against the contact point 6. This closes the micro switch SW1, and the cathode of the diode D3 in the drive module is grounded through the micro switch SW1. Thus, the signal output terminal is grounded through the micro switch SW1, outputting a low-level seat switch signal SEN. When the seat is open, the seat lock is unlocked. In the unlocked state, the locking hook 1 and the locking buckle 8 rotate and separate. The mechanical structure at the lower end of the locking buckle 8 rotates away from the spring 3. The spring 3 automatically springs back and separates from the contact point 6. The micro switch SW1 is opened, and the cathode of the diode D3 in the drive module is not grounded. The signal output terminal outputs a high-level seat switch signal SEN. Contact 6 may include a first contact and a second contact. The first contact is connected to the cathode of diode D3, and the second contact is grounded. When the spring contacts contact 6, the first contact and the second contact are electrically connected through the spring contacts, that is, the micro switch SW1 is closed.

[0059] The aforementioned seat lock has three unlocking methods: manual cable unlocking, communication control unlocking, and vehicle-side direct drive unlocking. The manual cable unlocking method involves manually pulling the cable 9 to rotate the latch 8, separating the latch hook 1 from the latch 8, thus unlocking the seat lock. The communication control unlocking method sends an unlocking command to the seat lock's MCU via the vehicle, causing the MCU to control the motor to rotate, pushing the latch 8 to separate the latch hook 1 from the latch 8, thus unlocking the seat lock. The vehicle-side direct drive unlocking method uses a specific electronic component in the vehicle to directly output power to drive the motor inside the seat lock to rotate, pushing the latch 8 to separate the latch hook 1 from the latch 8, thus unlocking the seat lock.

[0060] Both communication-controlled unlocking and vehicle-side direct-drive unlocking are electronic control unlocking methods. The following example illustrates one possible implementation of electronic control unlocking (see Figure 4). In this method, the user can send unlocking commands to an IoT (Internet of Things) device via a mobile app from the cloud. The IoT device connects to the BCM (Body Control Module) and forwards the unlocking command to the BCM. Alternatively, a button can be installed on the electric vehicle, allowing the user to send an unlocking command to the BCM by pressing the button. The BCM can send unlocking commands to the seat lock via CAN communication, K-line communication, or other communication methods. The MCU inside the seat lock controls the unlocking, i.e., communication-controlled unlocking. Alternatively, the BCM can directly drive the seat lock motor to unlock the seat lock, i.e., vehicle-side direct-drive unlocking. The methods of sending unlocking commands from the cloud to the IoT device via a mobile app, and the methods of the IoT device forwarding the unlocking command to the BCM, are consistent with existing technologies.

[0061] In all three unlocking methods described above, the position of the locking hook 1 in the unlocked state remains consistent. Regardless of the unlocking method used, the locking hook 1 can always close the micro switch SW1 in the unlocked state. This allows the detection module to detect the open / closed state of the seat cushion by detecting the seat cushion lock's status, and to control the seat bucket light to illuminate when the seat cushion is detected to be open. Therefore, the seat cushion open / closed state detection method adopted in this application is compatible with all three unlocking methods and possesses good versatility.

[0062] Further, as shown in Figure 5, the power supply module includes resistors R2, R3, and R5, diode D5, Zener diode D6, capacitors C2, C3, and C4, and a switching transistor Q1.

[0063] The anode of the diode D5 is connected to the input power supply, the cathode of the diode D5 is connected to resistors R2 and R3 and one end of resistor R5 to form a connection node, and the other end of resistor R2 is connected to the third electrode of the switching transistor Q1 and the other end of resistor R3.

[0064] The first electrode of the switching transistor Q1 is connected to one end of the capacitor C2 to form a power output terminal, the other end of the capacitor C2 is grounded, and the capacitor C3 is connected in parallel with the capacitor C2.

[0065] 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.

[0066] The diode D5 is a reverse-current protection diode. The input power supply can be provided by the vehicle, either as a battery power supply or a backup power supply, or as a power supply obtained by converting the battery power supply or backup power supply 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 supply module converts the input power voltage into a 5V power supply voltage, which is output from the power supply output terminal. One end of the resistor R12 in the detection module is connected to the power supply output terminal to receive the 5V power supply voltage.

[0067] Further, as shown in Figure 5, the control module includes a control chip U1 and a capacitor C5. The control chip U1 is an 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, and the VDD pin is connected to the VSS pin through capacitor C5. The VSS pin is grounded, and the PB5 pin is connected to the other end of resistor R11. The PB5 pin is used to receive the seat cushion switch signal SEN, and the PB0 pin is used to output a control signal, namely the LED-CTRL signal shown in Figure 5.

[0068] The drive module includes switching transistors Q2 and Q3, resistors R1 and R4, a Zener diode D2, resistor R6, and resistor R9.

[0069] The first electrode of the switching transistor Q2 is connected to the connection node of the power module and has been connected to the input power voltage. The first electrode of the switching transistor Q2 is also connected to the resistor R4 and the cathode of the Zener diode D2. The second electrode of the switching transistor Q2 is connected to the other end of the resistor R4, the anode of the Zener diode D2 and one end of the resistor R6. The third electrode of the switching transistor Q2 is connected to one end of the resistor R1 and the positive terminal of the lighting module.

[0070] The other end of the resistor R6 is connected to the third electrode of the switching transistor Q3, the first electrode of the switching transistor Q3 is grounded, and the second electrode of the switching transistor Q3 is connected to the PB0 pin of the control chip U1 through the resistor R9.

[0071] In one embodiment of this utility model, as shown in FIG7, the driving module further includes a constant current circuit formed by resistor R16, capacitor C7, capacitor C8, Schottky diode D7, inductor L1 and driving chip U3, wherein the driving chip U3 is of model OC5116L.

[0072] The driver chip U3 includes an S pin, a CS pin, a GND pin, a MODE pin, a VDD pin, and an SW pin.

[0073] The S pin and CS pin are grounded through resistor R16, the GND pin and MODE pin are grounded, the VDD pin is connected to one end of capacitor C7 and the other end of resistor R1, and the other end of capacitor C7 is grounded.

[0074] One end of the capacitor C8 is connected to one end of the resistor R1, the cathode of the Schottky diode D7, and the positive terminal of the lighting module. The other end of the capacitor C8 is grounded. The anode of the Schottky diode D7 is connected to the SW pin and one end of the inductor L1. The other end of the inductor L1 is connected to the negative terminal of the lighting module.

[0075] The switching transistor Q2 is a PMOS transistor. For a MOS transistor, the first electrode is the source, the second electrode is the gate, and the third electrode is the drain. The switching transistor Q3 is an NPN transistor. When the switching transistor Q3 is a transistor, the definitions of the first and third electrodes of the switching transistor Q3 are the same as above, and will not be repeated here. The bucket lamp includes multiple LEDs connected in series between the positive and negative terminals. In this embodiment, the bucket lamp includes six LEDs connected in series, namely LED1-LED6 as shown in Figure 7. The positive terminal of LED1 is connected to one end of resistor R1, and the negative terminal of LED6 is connected to one end of inductor L1.

[0076] The specific working principle of the driving module is as follows: When the control signal, i.e., the LED_CTRL signal, is high, the switching transistor Q3 is turned on to ground. Current flows from the power input terminal, i.e., the VCC terminal shown in Figure 7, through resistors R4 and R6 to ground, thereby generating a voltage drop between the gate and source of the switching transistor Q2, causing the switching transistor Q2 to turn on. The Zener diode D2 is used to protect the gate of the switching transistor Q2. When the switching transistor Q2 is turned on, the power supply is connected to the driving chip U3, and the capacitor C8 buffers the power supply. The driving chip U3 is specifically a constant current LED driving chip. The working principle of the driving chip U3 is consistent with the existing technology. After obtaining the power supply, its SW pin controls the inductor L1 to charge and discharge according to a preset frequency. The constant current of the seat lamp is controlled through the inductor L1. Resistor R16 is a current sampling resistor, and the resistance value of resistor R16 can control the current of the seat lamp. The Schottky diode D7 provides a freewheeling circuit for the inductor current when the output voltage of the SW pin stops.

[0077] In another embodiment of this utility model, the constant current circuit in the driving module is formed by a resistor R17 and a driving chip U2. The driving chip U2 is an ASC63601 and includes a VIN pin, a DRV pin, a CS pin, and a GND pin. The other end of the resistor R1 is connected to the VIN pin, the GND pin is grounded, the CS pin is grounded through a resistor R16, and the DRV pin is connected to the negative terminal of the lighting module. The driving chip U2 is a linear constant current chip. When the control signal, i.e., the LED-CTRL signal, is high, the switching transistor Q2 is turned on, and the driving chip U2 controls the constant current of the lamp holder. The magnitude of the constant current of the driving chip U2 can be set by the resistance value of the sampling resistor R17. Compared with the previous embodiment, the constant current circuit structure used in this embodiment is relatively lower in cost.

[0078] In practical applications, the seat cushion may always be in the open state. If lighting is provided continuously when the seat cushion is open, it may cause excessive power consumption. Therefore, in one embodiment of this application, the control module starts timing while controlling the seat light to be lit, and controls the seat light to be turned off when the seat light lighting time exceeds the preset time.

[0079] Figure 9 illustrates the control logic of the bucket light provided by the above-mentioned control system in this application. As shown in Figure 9, 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 bucket light from being accidentally lit when powered on.

[0080] After system initialization, the MCU continuously monitors the seat switch signal SEN. When the seat is closed and the seat lock is engaged, the seat switch signal SEN is low, and the MCU outputs a low-level control signal, preventing the driver module from driving the bucket light. When the seat is opened and the seat lock is unlocked, the seat switch signal SEN becomes high, the MCU outputs a high-level control signal, the MCU's timer starts counting, and the driver module simultaneously illuminates the bucket light. The MCU then continuously checks whether the timer's count exceeds a preset time, which can be set according to actual needs. If the count does not exceed the preset time, the MCU checks whether the seat switch signal SEN flips to low. If SEN does, the MCU outputs a low-level control signal to turn off the bucket light and simultaneously resets the timer, then repeats the above process after system initialization. If the count exceeds the preset time, the MCU outputs a low-level control signal to turn off the bucket light and simultaneously resets the timer. Then, it checks whether the seat switch signal SEN has flipped to a low level, and repeats the above process after system initialization after detecting that the seat switch signal SEN has flipped to a low level, in order to prevent the seat bucket light from being continuously lit for a long time.

[0081] In the description of this specification, the terms "first," "second," and "third" 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," "example," etc., means that a specific feature, structure, or characteristic described in connection with that embodiment / mode or example is included in at least one embodiment / mode or example 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.

[0082] 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 control system for a seat bucket light in an electric vehicle, characterized in that, include: The detection module is used to detect the on / off status of the electric vehicle seat and generate a seat switch signal SEN; the control module is connected to the detection module and is used to generate a control signal based on the seat switch signal SEN; the drive module is connected to the lighting module and the control module and is used to control the working status of the lighting module based on the control signal. The power supply module, connected to the detection module, control module, and drive module, is used to supply power to the detection module, control module, and drive module.

2. The electric vehicle seat bucket light control system according to claim 1, characterized in that, The detection module includes resistor R12, resistor R11, diode D3, capacitor C6, and micro switch SW1. One end of resistor R12 is connected to the power supply module, and the other end of resistor R12 is connected to one end of resistor R11 and the anode of diode D3. The other end of resistor R11 is connected to the control module, and the other end of resistor R11 is grounded through capacitor C6. The cathode of diode D3 is grounded through micro switch SW1.

3. The electric vehicle seat bucket light control system according to claim 2, characterized in that, The micro switch SW1 is a normally open switch and is installed in the seat lock of the electric vehicle. The micro switch SW1 includes a fixed base, a spring, and a contact. The seat lock includes a latch and a hook that are rotatably mounted on the plastic shell of the seat lock. The working state of the seat lock includes a locked state and an unlocked state. When the seat lock is in the locked state, the hook moves the spring to abut the contact point, causing the micro switch SW1 to close.

4. The electric vehicle seat bucket light control system according to claim 2, characterized in that, The power module includes resistors R2, R3, and R5, diode D5, Zener diode D6, capacitors 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, R3, and one end of resistor R5 to form a connection node. The other end of resistor R2 is connected to the third electrode of switching transistor Q1 and the other end of resistor R3. The first electrode of switching transistor Q1 is connected to one end of capacitor C2 to form a power output terminal, and the other end of capacitor C2 is grounded. Capacitor C3 is connected in parallel with capacitor C2. 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.

5. The electric vehicle seat bucket light control system according to claim 4, characterized in that, The control module includes a control chip U1 and a capacitor C5. The control chip U1 is of model 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 other end of the resistor R11.

6. The electric vehicle seat bucket light control system according to claim 5, characterized in that, The driving module includes switching transistors Q2 and Q3, resistors R1 and R4, a Zener diode D2, resistors R6 and R9. The first electrode of switching transistor Q2 is connected to the connection node of the power module, and is also connected to resistor R4 and the cathode of Zener diode D2. The second electrode of switching transistor Q2 is connected to the other end of resistor R4, the anode of Zener diode D2, and one end of resistor R6. The third electrode of switching transistor Q2 is connected to one end of resistor R1 and the positive terminal of the lighting module. The other end of resistor R6 is connected to the third electrode of switching transistor Q3. The first electrode of switching transistor Q3 is grounded, and the second electrode of switching transistor Q3 is connected to the PB0 pin of control chip U1 via resistor R9.

7. The electric vehicle seat bucket light control system according to claim 6, characterized in that, The driving module also includes a resistor R16, capacitors C7 and C8, a Schottky diode D7, an inductor L1, and a driving chip U3, the driving chip U3 being of model OC5116L. The driving chip U3 includes an S pin, a CS pin, a GND pin, a MODE pin, a VDD pin, and a SW pin. The S pin and CS pin are grounded through the resistor R16, the GND pin and the MODE pin are grounded, the VDD pin is connected to one end of the capacitor C7 and the other end of the resistor R1, and the other end of the capacitor C7 is grounded. One end of the capacitor C8 is connected to one end of the resistor R1, the cathode of the Schottky diode D7, and the positive terminal of the lighting module, and the other end of the capacitor C8 is grounded. The anode of the Schottky diode D7 is connected to the SW pin and one end of the inductor L1, and the other end of the inductor L1 is connected to the negative terminal of the lighting module.

8. The electric vehicle seat bucket light control system according to claim 6, characterized in that, The driving module also includes a resistor R17 and a driving chip U2. The driving chip U2 is an ASC63601. The driving chip U2 includes a VIN pin, a DRV pin, a CS pin, and a GND pin. The other end of the resistor R1 is connected to the VIN pin, the GND pin is grounded, the CS pin is grounded through a resistor R16, and the DRV pin is connected to the negative terminal of the lighting module.

9. The electric vehicle seat bucket light control system according to claim 6, characterized in that, The lighting module includes a bucket light, which includes multiple LEDs connected in series between the positive and negative terminals.

10. The electric vehicle seat bucket light control system according to claim 6, characterized in that, The switching transistors Q1 and Q3 are transistors, and the switching transistor Q2 is a MOSFET.

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