Vehicle indicating lamp driving circuit

Abstract

The utility model discloses a vehicle indicating lamp driving circuit which comprises a vehicle power supply module and a backlight indicating lamp driving module which are connected with each other, and the vehicle power supply module comprises an input power supply, a first battery and a voltage transformation assembly. The backlight indicating lamp driving module comprises a backlight indicating lamp. The input power supply and the first battery for supplying power to the atmosphere lamp serve as two input ends of the voltage transformation assembly, and then the input voltage and the power supply are subjected to voltage conversion through the voltage transformation assembly, so that the backlight indicating lamp driving module can be supplied with power through the converted voltage, and synchronization of the backlight indicating lamp and the atmosphere lamp is realized; and the power supply of the backlight indicating lamp is directly supplied by the battery, and the gear controller does not need to supply power to the backlight indicating lamp, so that when the gear controller is in a dormant state, the state of the backlight indicating lamp can be determined by the battery serving as the power supply of the vehicle, the gear controller does not need to participate, and the energy consumption of the vehicle in a non-working state is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic circuits, in particular to a vehicle indicator light driving circuit. Background Art

[0002] The gear indicator light of the vehicle gearbox has two light sources, namely the highlight indicator light and the backlight indicator light. The highlight indicator light refers to the indicator light of the current gear position, and the backlight indicator light refers to the indicator light of the non-current gear position. Regardless of daytime or nighttime, the highlight indicator light and the backlight indicator light will display brightness, and the brightness during the day will be higher than that at night. The highlight indication state takes the current gear position as input, and the highlight indicator light in the driving circuit works. The backlight indication state needs to take into account the highlight indication state and the current gear position, and then the backlight indicator light in the driving circuit works.

[0003] However, as part of the smart cabin, the backlight indicator cannot be synchronized with the interior ambient light, affecting the user experience. If the existing drive circuit is used, it is necessary to ensure that the gear controller and the ambient light are in the same state of sleep and wake-up, which will seriously increase the energy consumption of the vehicle when it is not working.

[0004] Therefore, how to reduce the energy consumption of the entire vehicle in a non-working state while achieving synchronization between the backlight indicator light and the interior ambient light has become an urgent problem that needs to be solved. Utility Model Content

[0005] Based on the above problems, the utility model provides a vehicle indicator light driving circuit to achieve synchronization between a backlight indicator light and an interior ambient light, thereby reducing the energy consumption of the entire vehicle in a non-working state.

[0006] The utility model embodiment discloses the following technical solution:

[0007] The utility model provides a vehicle indicator light driving circuit, the circuit comprises a vehicle power module and a backlight indicator light driving module connected to each other, the vehicle power module comprises an input power supply, a first battery and a transformer assembly; the backlight indicator light driving module comprises a backlight indicator light;

[0008] The first battery is connected to the first input terminal of the transformer component, the input power supply is connected to the second input terminal of the transformer component, and the first output terminal of the transformer component is connected to the backlight indicator driving module;

[0009] The voltage transformation component is used to perform voltage conversion based on the voltage of the first input terminal and the power supply of the second input terminal, and provide the converted voltage to the backlight indicator driving module through the first output terminal, so as to power the backlight indicator driving module with the converted voltage;

[0010] The backlight indicator light driving module is used to drive the backlight indicator light to work;

[0011] The first battery is also connected to the ambient light on the vehicle to supply power to the ambient light.

[0012] Optionally, the backlight indicator driving module further includes a first switch tube, a first diode, a second switch tube and a first resistor;

[0013] The first end and the second end of the first resistor are connected to the first output end of the transformer component and the cathode of the first diode respectively; the anode of the first diode is grounded;

[0014] The positive electrode and the negative electrode of the backlight indicator light are respectively connected to the first output end of the transformer component and the collector of the second switch tube; the emitter of the second switch tube is grounded, and the base of the second switch tube is connected to the second end of the first resistor;

[0015] The collector of the first switch tube is connected to the second end of the first resistor, and the emitter of the first switch tube is grounded; the base of the first switch tube is used to receive a first input signal.

[0016] Optionally, the backlight indicator driving module further includes a second resistor and a third resistor;

[0017] The second resistor is connected between the base and the emitter of the first switch tube, and the base of the first switch tube receives the first input signal through the third resistor.

[0018] Optionally, the circuit further comprises a highlight indicator light driving module, and the highlight indicator light driving module comprises: a highlight power supply module, a highlight indicator light and a third switch tube;

[0019] The highlight power module is connected to the positive electrode of the highlight indicator light, the negative electrode of the highlight indicator light is connected to the collector of the third switch tube, the emitter of the third switch tube is grounded, and the base of the third switch tube is used to receive a second input signal.

[0020] Optionally, the highlight indicator light driving module further includes a fourth resistor and a fifth resistor;

[0021] The fourth resistor is connected between the base and emitter of the third switch tube, and the base of the third switch tube receives the second input signal through the fifth resistor.

[0022] Optionally, the highlight power module includes: a fourth switch tube, a sixth resistor, a seventh resistor, an eighth resistor, a second battery and a highlight power supply;

[0023] The first end of the sixth resistor is used to receive the third input signal, and the second end of the sixth resistor is connected to the first end of the eighth resistor;

[0024] The second end of the eighth resistor is connected to the emitter of the fourth switch tube and is grounded, the second end of the eighth resistor is connected to the highlight power supply, and the highlight power supply is connected to the positive electrode of the highlight indicator light;

[0025] The second end of the sixth resistor is connected to the base of the fourth switch tube, the collector of the fourth switch tube is connected to the second end of the seventh resistor, and the first end of the seventh resistor is connected to the second battery.

[0026] Optionally, the second battery is used to power the high-brightness power supply.

[0027] Optionally, the first input signal and the second input signal are homologous signals.

[0028] Optionally, the voltage value of the highlight power supply is determined by a third input signal of the highlight power supply module.

[0029] Optionally, the vehicle power module further includes a second diode, a ninth resistor and a tenth resistor;

[0030] The input power supply is connected to the positive electrode of the second diode, the negative electrode of the second diode is connected to the first end of the ninth resistor, the second end of the ninth resistor is connected to the second input end of the transformer component, the negative electrode of the second diode is connected to the first end of the tenth resistor, and the second end of the tenth resistor is grounded.

[0031] Compared with the prior art, the utility model has the following beneficial effects:

[0032] The utility model provides a vehicle indicator light driving circuit, which includes a vehicle power module and a backlight indicator light driving module connected to each other, the vehicle power module includes an input power supply, a first battery and a transformer assembly; the backlight indicator light driving module includes a backlight indicator light. The first battery is connected to the first input end of the transformer assembly, the input power supply is connected to the second input end of the transformer assembly, and the first output end of the transformer assembly is connected to the backlight indicator light driving module. The transformer assembly is used to perform voltage conversion based on the voltage of the first input end and the power supply of the second input end, and provide the converted voltage to the backlight indicator light driving module through the first output end, so as to power the backlight indicator light driving module with the converted voltage. The backlight indicator light driving module is used to drive the backlight indicator light to work; the first battery is also connected to the atmosphere light on the vehicle, and is used to power the atmosphere light. The input power supply and the first battery for powering the atmosphere light serve as the two input ends of the transformer component, and then the input voltage and power supply are converted through the transformer component, so that the backlight indicator light drive module can be powered by the converted voltage, thereby realizing the synchronization of the backlight indicator light and the atmosphere light, and the power supply of the backlight indicator light is directly supplied by the battery, and there is no need for the gear controller to power the backlight indicator light, so that when the gear controller is in the sleep state, the state of the backlight indicator light can be determined by the battery serving as the power supply of the vehicle, without the participation of the gear controller, thereby reducing the energy consumption of the vehicle when it is not working. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0034] Figure 1 A schematic diagram of the structure of a gear position indication panel provided by the utility model;

[0035] Figure 2 A circuit diagram of a vehicle indicator light driving circuit provided by the utility model;

[0036] Figure 3 A circuit diagram of a specific vehicle indicator light driving circuit provided by the utility model;

[0037] Figure 4 A circuit diagram of another specific vehicle indicator light driving circuit provided by the utility model;

[0038] Figure 5 A circuit diagram of another specific vehicle indicator light driving circuit provided by the utility model;

[0039] Figure 6 A circuit diagram of another specific vehicle indicator light driving circuit provided by the utility model;

[0040] Figure 7 This is a structural schematic diagram of the relationship between the indicator light and the level of the input signal provided by the utility model. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0042] As described above, the highlight indicator light refers to the indicator light of the current gear, and the backlight indicator light refers to the indicator light of the non-current gear. In the current gear, the highlight indicator light is on and the backlight indicator light is off. In the non-current gear, the backlight indicator light is on and the highlight indicator light is off. To facilitate understanding of the gear indicator light, please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a gear indicator panel. The indicator panel can display a highlight indicator light and a backlight indicator light. Figure 1 2 is the indicator panel, 3 is the light isolation board, 4 is the base, 5, 6, 7 are all light guides, 8 is the LED light board, 9 is the connector, and 10 is the housing. The highlight indication state takes the current gear position as input, and the highlight indicator in the driving circuit works. The backlight indication state needs to take into account both the highlight indication state and the current gear position, and then the backlight indicator in the driving circuit works.

[0043] However, as part of the smart cabin, the backlight indicator cannot be synchronized with the interior ambient light, affecting the user experience. If the existing drive circuit is used, it is necessary to ensure that the gear controller and the ambient light are in the same state of sleep and wake-up, which will seriously increase the energy consumption of the vehicle when it is not working.

[0044] Therefore, how to reduce the energy consumption of the entire vehicle when it is not working while achieving synchronization between the backlight indicator light and the interior ambient light has become an urgent problem that needs to be solved.

[0045] Based on this, in order to solve the above problems, the utility model provides a vehicle indicator light driving circuit, which includes a vehicle power module and a backlight indicator light driving module connected to each other, the vehicle power module includes an input power supply, a first battery and a transformer assembly; the backlight indicator light driving module includes a backlight indicator light. The first battery is connected to the first input end of the transformer assembly, the input power supply is connected to the second input end of the transformer assembly, and the first output end of the transformer assembly is connected to the backlight indicator light driving module. The transformer assembly is used to perform voltage conversion based on the voltage at the first input end and the power supply at the second input end, and provide the converted voltage to the backlight indicator light driving module through the first output end, so as to power the backlight indicator light driving module with the converted voltage. The backlight indicator light driving module is used to drive the backlight indicator light to work; the first battery is also connected to the atmosphere light on the vehicle, and is used to power the atmosphere light. The input power supply and the first battery for powering the atmosphere light serve as the two input ends of the transformer component, and then the input voltage and power supply are converted through the transformer component, so that the backlight indicator light drive module can be powered by the converted voltage, thereby realizing the synchronization of the backlight indicator light and the atmosphere light, and the power supply of the backlight indicator light is directly supplied by the battery, and there is no need for the gear controller to power the backlight indicator light, so that when the gear controller is in the sleep state, the state of the backlight indicator light can be determined by the battery serving as the power supply of the vehicle, without the participation of the gear controller, thereby reducing the energy consumption of the vehicle when it is not working.

[0046] See also Figure 2 , Figure 2 A circuit diagram of a vehicle indicator light driving circuit provided by the utility model, the circuit comprises: a vehicle power module 1 and a backlight indicator light driving module 2 connected to each other, the vehicle power module comprises an input power supply 11, a first battery 12 and a transformer component 13; the backlight indicator light driving module 2 comprises a backlight indicator light 21.

[0047] The first battery 12 is connected to a first input end of the transformer assembly 13 , the input power source 11 is connected to a second input end of the transformer assembly 13 , and a first output end of the transformer assembly 13 is connected to the backlight indicator driving module 2 .

[0048] The transformer component 13 is used to perform voltage conversion based on the voltage of the first input terminal and the power supply of the second input terminal, and provide the converted voltage to the backlight indicator driving module 2 through the first output terminal, so as to power the backlight indicator driving module 2 with the converted voltage. As an example, the voltage converted by the transformer component can be 5 volts.

[0049] The backlight indicator light driving module 2 is used to drive the backlight indicator light 21 to work.

[0050] The first battery 12 is also connected to the ambient light on the vehicle to supply power to the ambient light.

[0051] Reference Figure 3, Figure 3 This is a circuit diagram of a specific vehicle indicator light driving circuit. The vehicle power module includes: an input power supply, i.e., a backlight power supply ILL1, a first battery VIN, a transformer component U1, a second diode D2, a ninth resistor R9, a tenth resistor R10, a first capacitor C1, a second capacitor C2, a third capacitor C3, and a fourth capacitor C4.

[0052] In a possible implementation, the connection relationship of the vehicle power module may specifically be:

[0053] The backlight power supply ILL1 is connected to the positive electrode of the second diode D2, the negative electrode of the second diode D2 is connected to the first end of the ninth resistor R9, the second end of the ninth resistor R9 is connected to the second pin 2 of the transformer component U1, the negative electrode of the second diode D2 is connected to the first end of the tenth resistor R10, and the second end of the tenth resistor R10 is grounded.

[0054] The first battery VIN is connected to the second capacitor C2 and grounded, the first battery VIN is connected to the first capacitor C1 and grounded, the first battery VIN is also connected to the first pin 1 of the transformer component U1, the fifth pin 5 of the transformer component U1 is grounded, the third pin 3, the fourth pin 4, the seventh pin 7 and the eighth pin 8 of the transformer component U1 are all grounded, the sixth pin 6 of the transformer component U1 is connected to the third capacitor C3 and grounded, the sixth pin 6 of the transformer component U1 is also connected to the fourth capacitor C4 and grounded, and the sixth pin 6 of the transformer component U1 also serves as an output end to output the converted voltage to the backlight indicator light driving module.

[0055] The voltage output by the backlight power supply can control whether the second diode is turned on, thereby realizing the on or off of the transformer component. In addition, the backlight power supply ILL1 is introduced into the vehicle power module through a wiring harness. Compared with the related art in which the gear indicator light is controlled by the ambient light, each backlight lamp needs to be controlled separately according to the gear position, which saves the wiring harness cost of the whole vehicle.

[0056] In a specific implementation, the backlight indicator driving module can be seen in Figure 4 , Figure 4 FIG. 1 is another specific circuit diagram of a vehicle indicator light driving circuit. The backlight indicator light driving module further includes a first switch tube Q1, a first diode D1, a second switch tube Q2 and a first resistor R1. Figure 4 It is indicated by LED10.

[0057] Among them, the switch tube can be a triode, which is a semiconductor device that controls current. Its function is to amplify weak signals into electrical signals with larger amplitude values. It is also used as a contactless switch. It is one of the basic semiconductor components and has the function of current amplification. The triode is made of two PN junctions very close to each other on a semiconductor substrate. The two PN junctions divide the entire semiconductor into three parts. The middle part is the base area, and the two sides are the emitter area and the collector area. There are two arrangements: PNP and NPN. The triode includes three pins, namely the collector, base and emitter. For ease of understanding, the switch tube is taken as an NPN triode as an example in the following text to expand the explanation.

[0058] In a possible implementation, the connection relationship of the backlight indicator driving module can be specifically as follows: the first end and the second end of the first resistor R1 are respectively connected to the first output end of the transformer component and the cathode of the first diode D1, and the anode of the first diode D1 is grounded. The first output end of the transformer component can be represented by a converted voltage. As an example, the converted voltage is 5 volts. This application does not specifically limit the converted voltage value.

[0059] The positive electrode and the negative electrode of the backlight indicator LED10 are respectively connected to the first output end of the transformer component and the collector of the second switch tube Q2, the emitter of the second switch tube Q2 is grounded, and the base of the second switch tube Q2 is connected to the second end of the first resistor R1. In addition, the emitter of the second switch tube Q2 can also be connected to the resistor R11 and then grounded. As an example, the resistance value of R1 can be 10K, and the resistance value of R5 can be 1.3K. This application does not specifically limit the models and specific voltage values, current values ​​or resistance values ​​of each device appearing in the figure, which are only used as an exemplary description.

[0060] The collector of the first switch tube Q1 is connected to the second end of the first resistor R1 , the emitter of the first switch tube Q1 is grounded, and the base of the first switch tube Q1 is used to receive the first input signal.

[0061] In addition, a second resistor R2 is connected between the base and emitter of the first switch tube Q1 , and the base of the first switch tube Q1 receives the first input signal through the third resistor R3 .

[0062] The first input signal is a driving signal input from the outside, and when the first input signal is a level signal, it can be a high level or a low level. The first input signal can also be a signal in other forms, which is not limited in the embodiment of the present application.

[0063] In a specific implementation, the highlight indicator light driving module can be found in Figure 5 , Figure 52 is another specific circuit diagram of a vehicle indicator light driving circuit. The highlight indicator light driving module includes a highlight power module IND, a highlight indicator light LED13 and a third switch tube Q3.

[0064] In a possible implementation, the connection relationship of the highlight indicator light driving module can be specifically as follows: the highlight power module IND is connected to the positive pole of the highlight indicator light LED13, the negative pole of the highlight indicator light LED13 is connected to the collector of the third switch tube Q3, the emitter of the third switch tube Q3 is grounded, and the base of the third switch tube Q3 is used to receive the second input signal.

[0065] In addition, a fourth resistor R4 is connected between the base and emitter of the third switch tube Q3 , and the base of the third switch tube Q3 receives the second input signal through the fifth resistor R5 .

[0066] The second input signal is a driving signal input from the outside, and when the second input signal is a level signal, it can be a high level or a low level. The second input signal can also be a signal in other forms, which is not limited in the embodiment of the present application.

[0067] It should be noted that the first input signal and the second input signal are signals of the same source, so as to avoid the situation where the backlight indicator light and the highlight indicator light are on and off at the same time due to mismatch of the source signals.

[0068] When the first input signal and the second input signal are at a high level, the third switch tube Q3 is turned on, the highlight indicator LED13 is on, the first switch tube Q1 is turned on, the input voltage of the backlight indicator driving module can be 5V, and is grounded through the first resistor R1, and the base level of the second switch tube Q2 is 0, indicating that the second switch tube Q2 is in the off state, and the backlight indicator LED10 is not on.

[0069] In a specific implementation, the highlighted power module can be found in Figure 6 , Figure 6 2 is a circuit diagram of another specific vehicle indicator light driving circuit, in which the highlight power supply module includes a fourth switch tube Q4, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a second battery VIN2 and a highlight power supply IND.

[0070] In a possible implementation manner, the connection relationship of the highlight power module may specifically be:

[0071] A first end of the sixth resistor R6 is used to receive the third input signal, and a second end of the sixth resistor R6 is connected to a first end of the eighth resistor R8.

[0072] The second end of the eighth resistor R8 is connected to the emitter of the fourth switch tube Q4 and grounded. The second end of the eighth resistor R8 is connected to the highlight power supply IND. The highlight power supply IND is connected to the positive electrode of the highlight indicator LED13.

[0073] The second end of the sixth resistor R6 is connected to the base of the fourth switch tube Q4, the collector of the fourth switch tube Q4 is connected to the second end of the seventh resistor R7, and the first end of the seventh resistor R7 is connected to the second battery VIN2.

[0074] The second battery VIN2 is used to supply power to the highlight power IND. The voltage value of the highlight power IND is determined by the third input signal. The voltage value of the highlight power IND can determine the brightness of the highlight indicator light. The third input signal is different from the first input signal and the second input signal. The third input signal can be a pulse width modulation signal input from the outside. The voltage value of the highlight power IND can be determined by the duty cycle value of the pulse width modulation signal.

[0075] See also Figure 7 , Figure 7 Schematic diagram of the relationship between the indicator light and the level of the input signal. When the vehicle is in working state, as an example, when the gear is in the reverse gear R, the backlight power supply ILL1 can be 12V, at this time, the input voltage of the highlight power supply IND and the backlight indicator light driving module can be 5V, the first input signal and the second input signal are high level, according to Figure 4 and Figure 5 As can be seen from the circuit diagram, the highlight indicator LED13 is on and the backlight indicator LED10 is off.

[0076] When the vehicle is in working state and the gear is in P parking gear, the backlight power supply ILL1 can be 12V, at this time, the input voltage of the highlight power supply IND and the backlight indicator light driving module can be 5V, the first input signal and the second input signal are low level, according to Figure 4 and Figure 5 It can be seen from the circuit in that the highlight indicator LED13 is off and the backlight indicator LED10 is on.

[0077] When the vehicle is in working state, the backlight power ILL1 can be 12V, the input voltage of the backlight indicator light driver module can be 5V, the highlight power IND can be 0V, the first input signal and the second input signal are high level, according to Figure 4 and Figure 5 It can be seen that the highlight indicator LED13 is off and the backlight indicator LED10 is off.

[0078] When the vehicle is in working state, the backlight power supply ILL1 can be 12V, the input voltage of the backlight indicator light driving module can be 5V, the highlight power supply IND can be 0V, the first input signal and the second input signal are low level, according to Figure 4 and Figure 5 It can be seen that the highlight indicator LED13 is off and the backlight indicator LED10 is on.

[0079] When the vehicle is not in operation, the backlight power supply ILL1 is 0V, the input voltage of the backlight indicator light driver module can be 0V, the highlight power supply IND can be 5V, the first input signal and the second input signal are high level, according to Figure 4 and Figure 5 It can be seen from the circuit in that the highlight indicator LED13 is on and the backlight indicator LED10 is off.

[0080] When the vehicle is not in operation, the backlight power supply ILL1 is 0V, the input voltage of the backlight indicator light driver module can be 0V, the highlight power supply IND can be 5V, the first input signal and the second input signal are low level, according to Figure 4 and Figure 5 It can be seen from the circuit in that the highlight indicator LED13 is off and the backlight indicator LED10 is off.

[0081] When the vehicle is not in operation, the backlight power ILL1 is 0V, the input voltage of the backlight indicator light driver module can be 0V, the highlight power IND can be 0V, the first input signal and the second input signal are high level, according to Figure 4 and Figure 5 It can be seen from the circuit in that the highlight indicator LED13 is off and the backlight indicator LED10 is off.

[0082] When the vehicle is not in operation, the backlight power ILL1 is 0V, the highlight power IND can be 0V, the input voltage of the backlight indicator driving module can be 0V, the first input signal and the second input signal are low level, according to Figure 4 and Figure 5 It can be seen from the circuit in that the highlight indicator LED13 is off and the backlight indicator LED10 is off.

[0083] It can be known from the level relationship between the indicator light and the input signal that in the present invention, the backlight indicator light and the atmosphere light are synchronized, and the highlight indicator light is determined by the voltage of the highlight power supply.

[0084] The input power supply of the utility model and the first battery for supplying power to the atmosphere light serve as the two input ends of the transformer component, and then the input voltage and the power supply are converted into voltage by the transformer component, so that the backlight indicator light driving module can be powered by the converted voltage, thereby realizing the synchronization of the backlight indicator light and the atmosphere light, and the power supply of the backlight indicator light is directly supplied by the battery, and there is no need for a gear controller to supply power to the backlight indicator light, so that when the gear controller is in a sleep state, the state of the backlight indicator light can be determined by the battery serving as the power supply of the vehicle, without the participation of the gear controller, thereby reducing the energy consumption of the vehicle when it is not in a working state.

[0085] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0086] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vehicle indicator light driving circuit, characterized in that: The circuit comprises a vehicle power module and a backlight indicator driving module connected to each other, wherein the vehicle power module comprises an input power source, a first battery and a transformer assembly; the backlight indicator driving module comprises a backlight indicator; The first battery is connected to the first input terminal of the transformer component, the input power supply is connected to the second input terminal of the transformer component, and the first output terminal of the transformer component is connected to the backlight indicator driving module; The voltage conversion component is used to perform voltage conversion based on the voltage of the first input terminal and the power supply of the second input terminal, and provide the converted voltage to the backlight indicator driving module through the first output terminal, so as to power the backlight indicator driving module with the converted voltage; The backlight indicator light driving module is used to drive the backlight indicator light to work; The first battery is also connected to the ambient light on the vehicle to supply power to the ambient light.

2. The circuit according to claim 1, characterized in that The backlight indicator driving module also includes a first switch tube, a first diode, a second switch tube and a first resistor; The first end and the second end of the first resistor are connected to the first output end of the transformer component and the cathode of the first diode respectively; the anode of the first diode is grounded; The positive electrode and the negative electrode of the backlight indicator light are respectively connected to the first output end of the transformer component and the collector of the second switch tube; the emitter of the second switch tube is grounded, and the base of the second switch tube is connected to the second end of the first resistor; The collector of the first switch tube is connected to the second end of the first resistor, and the emitter of the first switch tube is grounded; the base of the first switch tube is used to receive a first input signal.

3. The circuit according to claim 2, characterized in that The backlight indicator driving module also includes a second resistor and a third resistor; The second resistor is connected between the base and the emitter of the first switch tube, and the base of the first switch tube receives the first input signal through the third resistor.

4. The circuit according to claim 1, characterized in that The circuit also includes a highlight indicator light driving module, and the highlight indicator light driving module includes: a highlight power module, a highlight indicator light and a third switch tube; The highlight power module is connected to the positive electrode of the highlight indicator light, the negative electrode of the highlight indicator light is connected to the collector of the third switch tube, the emitter of the third switch tube is grounded, and the base of the third switch tube is used to receive a second input signal.

5. The circuit according to claim 4, characterized in that The highlight indicator light driving module also includes a fourth resistor and a fifth resistor; The fourth resistor is connected between the base and emitter of the third switch tube, and the base of the third switch tube receives the second input signal through the fifth resistor.

6. The circuit according to claim 4, characterized in that The highlight power module includes: a fourth switch tube, a sixth resistor, a seventh resistor, an eighth resistor, a second battery and a highlight power supply; The first end of the sixth resistor is used to receive the third input signal, and the second end of the sixth resistor is connected to the first end of the eighth resistor; The second end of the eighth resistor is connected to the emitter of the fourth switch tube and is grounded, the second end of the eighth resistor is connected to the highlight power supply, and the highlight power supply is connected to the positive electrode of the highlight indicator light; The second end of the sixth resistor is connected to the base of the fourth switch tube, the collector of the fourth switch tube is connected to the second end of the seventh resistor, and the first end of the seventh resistor is connected to the second battery.

7. The circuit according to claim 6, characterized in that The second battery is used to supply power to the high-brightness power supply.

8. The circuit according to any one of claims 4 to 5, characterized in that: The first input signal and the second input signal are signals of the same source.

9. The circuit according to claim 6, characterized in that The voltage value of the highlight power supply is determined by the third input signal of the highlight power supply module.

10. The circuit according to claim 1, characterized in that The vehicle power module also includes a second diode, a ninth resistor and a tenth resistor; The input power supply is connected to the positive electrode of the second diode, the negative electrode of the second diode is connected to the first end of the ninth resistor, the second end of the ninth resistor is connected to the second input end of the transformer component, the negative electrode of the second diode is connected to the first end of the tenth resistor, and the second end of the tenth resistor is grounded.

Images