Lamp driving device and vehicle

Abstract

The utility model discloses a lamp driving device and a vehicle, the lamp driving device comprises a storage battery and a lamp module; the relay is connected with the storage battery and the lamp module, and the relay is used for connecting or disconnecting the power supply of the storage battery to the lamp module; the control module is connected with the relay and the lamp module, the control module is used for sending a power supply enable signal to the relay and the lamp module, and the power supply enable signal is used for indicating the relay to be conducted. By adopting the device, the problem that the control module cannot be driven due to high lamp driving power can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of lamps, in particular to a lamp driving device and a vehicle. Background Art

[0002] Daytime running lights are a type of signal light, usually installed on both sides of the front of the vehicle. Their main function is not to illuminate the road, but to improve the appearance of the vehicle while providing vehicle recognition to reduce safety accidents. For this reason, there are more and more combined daytime running lights. Such daytime running lights are mainly driven and powered by CEM (Central Electronic Module). However, due to the limited driving power of CEM, when the driving power of the daytime running lights exceeds the driving threshold of CEM, CEM will not work. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a lamp driving device, which can solve the problem that the control module cannot be driven due to high lamp driving power.

[0004] A second object of the present invention is to provide a vehicle.

[0005] In order to solve the above problems, the first aspect of the utility model provides a lamp driving device, including: a battery and a lamp module; a relay, the relay is connected to the battery and the lamp module, and the relay is used to turn on or off the power supply of the battery to the lamp module; a control module, the control module is connected to the relay and the lamp module, and the control module is used to send a power supply enable signal to the relay and the lamp module respectively, and the power supply enable signal is used to instruct the relay to turn on.

[0006] According to the lamp driving device of the utility model, the lamp module is no longer directly driven and powered by the control module. Instead, the control module provides a power enable signal to the relay and the lamp module. After the relay is turned on, the battery powers the lamp module, thereby reducing the control module's demand for driving power of the lamp module and solving the problem that the control module cannot be driven due to high lamp driving power.

[0007] In some embodiments, the lamp module includes: a first left lamp unit, a first end of the first left lamp unit is connected to the first power supply end of the control module for receiving the power supply enable signal, and a second end of the first left lamp unit is connected to the relay; a first right lamp unit, a first end of the first right lamp unit is connected to the second power supply end of the control module for receiving the power supply enable signal, and a second end of the first right lamp unit is connected to the relay.

[0008] In some embodiments, the first left lamp unit or the first right lamp unit includes: a lamp; a first interface circuit, an input end of the first interface circuit is connected to the first power supply end / the second power supply end; a second interface circuit, a first input end of the second interface circuit is connected to the relay, a second input end of the second interface circuit is connected to the output end of the first interface circuit, and an output end of the second interface circuit is connected to the lamp.

[0009] In some embodiments, the first interface circuit includes: a first TVS tube, a first end of the first TVS tube is connected to the first power supply end / the second power supply end, and a second end of the first TVS tube is grounded; a first filter subunit, a first end of the first filter subunit is connected to the first end of the first TVS tube, the first power supply end / the second power supply end, and a second end of the first filter subunit is grounded; a diode, an anode of the diode is connected to the first end of the first filter subunit, the first end of the first TVS tube, and the first power supply end / the second power supply end; a first resistor, a first end of the first resistor is connected to the cathode of the diode; a first capacitor, a first end of the first capacitor is connected to the second end of the first resistor, and the second end of the first capacitor is grounded; a transistor, a base of the transistor is connected to the second end of the first resistor, a collector of the transistor is connected to the second input end of the second interface circuit, and an emitter of the transistor is grounded.

[0010] In some embodiments, the second interface circuit includes: a second TVS tube, a first end of the second TVS tube is connected to the relay, and a second end of the second TVS tube is grounded; a second filter subunit, a first end of the second filter subunit is connected to the first end of the second TVS tube and the relay, and a second end of the second filter subunit is grounded; a MOS tube, a gate of the MOS tube is connected to the collector of the transistor, a source of the MOS tube is connected to the first end of the second filter subunit, the first end of the second TVS tube, and the relay, and a drain of the MOS tube is connected to the lamp.

[0011] In some embodiments, the first filter subunit or the second filter subunit includes: a second capacitor, a first end of the second capacitor is the first end of the first filter subunit / the first end of the second filter subunit; a third capacitor, a first end of the third capacitor is connected to the second end of the second capacitor, and a second end of the third capacitor is grounded.

[0012] In some embodiments, the second interface circuit further includes: a fourth capacitor, a first end of the fourth capacitor is connected to the relay and the source of the MOS tube, and a second end of the fourth capacitor is connected to the gate of the MOS tube; a second resistor, a first end of the second resistor is connected to the first end of the fourth capacitor and the source of the MOS tube, and a second end of the second resistor is connected to the gate of the MOS tube; a voltage regulator tube, a negative electrode of the voltage regulator tube is connected to the first end of the fourth capacitor, the first end of the second resistor, and the source of the MOS tube, and a positive electrode of the voltage regulator tube is connected to the gate of the MOS tube.

[0013] In some embodiments, the first left lamp unit or the first right lamp unit further includes: a DC / DC circuit, an input end of the DC / DC circuit is connected to an output end of the second interface circuit, and an output end of the DC / DC circuit is connected to the lamp.

[0014] In some embodiments, the lamp module also includes: a second left-side lamp unit, an input end of the second left-side lamp unit being connected to the first end of the first left-side lamp unit and the first power supply end of the control module; a second right-side lamp unit, an input end of the second right-side lamp unit being connected to the first end of the first right-side lamp unit and the second power supply end of the control module; wherein the second left-side lamp unit and the second right-side lamp unit are both powered by the control module.

[0015] A second aspect of the present invention provides a vehicle, comprising the lamp driving device described in the above embodiment.

[0016] According to the vehicle of the utility model, by adopting the above-mentioned lamp driving device, the problem that the control module cannot be driven due to the large lamp driving power can be solved.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a structural schematic diagram of a lamp driving device according to an embodiment of the utility model;

[0020] Figure 2 is a circuit diagram of a first left lamp unit or a first right lamp unit according to an embodiment of the utility model;

[0021] Figure 3is a structural block diagram of a first left lamp unit or a first right lamp unit according to an embodiment of the utility model;

[0022] Figure 4 It is a structural block diagram of a vehicle according to an embodiment of the utility model.

[0023] Reference numerals:

[0024] Lamp driving device 10; vehicle 20;

[0025] Battery 1; lamp module 2; relay 3; control module 4; first left lamp unit 21; first right lamp unit 22; lamp 5; first interface circuit 6; second interface circuit 7; second left lamp unit 23; second right lamp unit 24; DC / DC circuit 8. DETAILED DESCRIPTION

[0026] The embodiments of the present utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model are described in detail below.

[0027] In order to solve the above problems, a first aspect of the present invention provides a lamp driving device, which can solve the problem that the control module cannot be driven due to high lamp driving power.

[0028] Reference below Figure 1 The lamp driving device of the embodiment of the utility model is described as follows Figure 1 As shown, the lamp driving device 10 includes a battery 1 , a lamp module 2 , a relay 3 and a control module 4 .

[0029] Among them, the relay 3 is connected to the battery 1 and the lamp module 2, and the relay 3 is used to turn on or off the power supply of the battery 1 to the lamp module 2; the control module 4 is connected to the relay 3 and the lamp module 2, and the control module 4 is used to send a power supply enable signal to the relay 3 and the lamp module 2 respectively, and the power supply enable signal is used to indicate that the relay 3 is turned on.

[0030] Specifically, after the control module 4 is powered on and started, the control module 4 will send a power supply enable signal to the relay 3 and the lamp module 2 respectively, on the one hand to control the relay 3 to close, on the other hand, if the lamp module 2 includes multiple lamps such as daytime lamps, the lamps can also be controlled to light up synchronously; in response to the power supply enable signal, the relay 3 is closed, thereby turning on the power supply of the battery 1 to the lamp module 2, and completing the lighting control of the lamp module 2, that is, the lamp module 2 is connected to the bat normal power, that is, the battery 1, and the control module 4 only needs to provide the power supply enable signal, and the driving power of the power supply enable signal is significantly lower than that of the control Module 4 directly provides power for the lamp module, and the power supply enable signal only uses a relatively low current such as 0.01A to complete signal transmission. Therefore, by separately processing the signal driving power and the power supply driving power required by the lamp module 2, the control module 4 only needs to provide a relatively low-power power supply enable signal, and the battery 1 provides power supply for the lamp module 2, thereby reducing the power demand of the lamp module 2 for the control module 4, meeting the driving power threshold requirement of the control module 4, and solving the problem that the control module cannot be driven due to the large lamp driving power. Moreover, the device does not need to increase the cost, has a simple structure, and is easy to implement.

[0031] Among them, Figure 1 As shown, the control end of the relay 3 is connected to the low-side driving end c of the control module 4, the first end of the relay 3 is connected to the battery 1, and the second end of the relay 3 is connected to the lamp module 2. The relay 3 is closed after receiving the power supply enable signal, so that the battery 1 can supply power to the lamp module 2.

[0032] According to the lamp driving device 10 of the utility model, the lamp module 2 is no longer directly driven and powered by the control module 4, but the control module 4 provides a power enable signal to the relay 3 and the lamp module 2. After the relay 3 is turned on, the battery 1 supplies power to the lamp module 2, thereby reducing the driving power demand of the lamp module 2 for the control module 4, solving the problem that the control module cannot be driven due to the large lamp driving power.

[0033] In some embodiments, Figure 1 As shown, the lamp module 2 includes a first left lamp unit 21 and a first right lamp unit 22 .

[0034] Among them, the first end of the first left lamp unit 21 is connected to the first power supply end a of the control module 4 for receiving the power supply enable signal, and the second end of the first left lamp unit 21 is connected to the relay 3; the first end of the first right lamp unit 22 is connected to the second power supply end b of the control module 4 for receiving the power supply enable signal, and the second end of the first right lamp unit 22 is connected to the relay 3. Therefore, based on the above connection mode, in response to the power supply enable signal sent by the control module 4, on the one hand, the first left lamp unit 21 and the first right lamp unit 22 can simultaneously receive the signal so as to light up synchronously, and on the other hand, the control module 4 only needs to provide a power supply enable signal with a relatively low power, and the battery 1 is used to power the first left lamp unit 21 and the first right lamp unit 22, thereby reducing the power demand of the lamp module 2 for the control module 4, meeting the driving power threshold requirement of the control module 4, and solving the problem that the control module cannot be driven due to the large lamp driving power, especially for the scenario where the first left lamp unit 21 and / or the first right lamp unit 22 use a lamp with a relatively high power.

[0035] In some embodiments, the structure of the first left light unit 21 is the same as the structure of the first right light unit 22. Figure 2 As shown, the first left lamp unit 21 or the first right lamp unit 22 includes a lamp 5 , a first interface circuit 6 and a second interface circuit 7 .

[0036] Among them, the input end of the first interface circuit 6 is connected to the first power supply end a / the second power supply end b, that is, the input end of the first interface circuit 6 in the first left lamp unit 21 is connected to the first power supply end a, and the input end of the first interface circuit 6 in the first right lamp unit 22 is connected to the second power supply end b; the first input end of the second interface circuit 7 is connected to the relay 3, the second input end of the second interface circuit 7 is connected to the output end of the first interface circuit 6, and the output end of the second interface circuit 7 is connected to the lamp 5.

[0037] Specifically, the first interface circuit 6 can limit the driving power provided by the control module 4. That is to say, the first interface circuit 6 only needs a power supply enable signal with a smaller current to be driven, and does not require the control module 4 to provide a larger current. Based on this, whether it is the first left lamp unit 21 or the first right lamp unit 22, after receiving the power supply enable signal, the first interface circuit 6 is turned on and transmits the signal to the second interface circuit 7. After the second interface circuit 7 is turned on, the power supply current provided by the battery 1 can enter the lamp 5 through the first input end and the output end of the second interface circuit 7 to prompt the lamp 5 to light up.

[0038] In some embodiments, Figure 2 As shown, the first interface circuit 6 includes a first TVS tube T1, a first filter subunit 11, a diode D1, a first resistor R1, a first capacitor C1 and a transistor Q1.

[0039] Among them, the first end of the first TVS tube T1 is connected to the first power supply end a / the second power supply end b, and the second end of the first TVS tube T1 is grounded; the first end of the first filter subunit 11 is connected to the first end of the first TVS tube T1, the first power supply end a / the second power supply end b, and the second end of the first filter subunit 11 is grounded; the anode of the diode D1 is connected to the first end of the first filter subunit 11, the first end of the first TVS tube T1, and the first power supply end a / the second power supply end b; the first end of the first resistor R1 is connected to the cathode of the diode D1; the first end of the first capacitor C1 is connected to the second end of the first resistor R1, and the second end of the first capacitor C1 is grounded; the base of the transistor Q1 is connected to the second end of the first resistor R1, the collector of the transistor Q1 is connected to the second input end of the second interface circuit 7, and the emitter of the transistor Q1 is grounded.

[0040] Specifically, the power supply enable signal sent by the control module 4 is unidirectionally conducted through the diode D1 to the base of the transistor Q1. After the transistor Q1 receives the electrical signal, the emitter of the transistor Q1 and the collector of the transistor Q1 are conducted, thereby providing an electrical signal about the power supply enable signal to the second interface circuit 7 to cause the second interface circuit 7 to be conducted and cause the lamp 5 to light up. At the same time, the diode D1 can play an anti-reverse role, and the first TVS tube T1, the first filter subunit 11, the first resistor R1 and the first capacitor C1 are arranged in the first interface circuit 6, thereby preventing the impact of instantaneous voltage through the first TVS tube T1, the filtering effect of the first filter subunit 11 and the voltage dividing effect of the first resistor R1, and effectively outputting a stable DC signal to the transistor Q1.

[0041] In some embodiments, Figure 2 As shown, the second interface circuit 7 includes a second TVS tube T2, a second filter subunit 12 and a MOS tube Q2.

[0042] Among them, the first end of the second TVS tube T2 is connected to the relay 3, and the second end of the second TVS tube T2 is grounded; the first end of the second filter subunit 12 is connected to the first end of the second TVS tube T2 and the relay 3, and the second end of the second filter subunit 12 is grounded; the gate of the MOS tube Q2 is connected to the collector of the transistor Q1, the source of the MOS tube Q2 is connected to the first end of the second filter subunit 12, the first end of the second TVS tube T2, and the relay 3, and the drain of the MOS tube Q2 is connected to the lamp 5.

[0043] Specifically, after the transistor Q1 is turned on, the gate of the MOS tube Q2 will receive an electrical signal about the power supply enable signal, the drain of the MOS tube Q2 is turned on with the source of the MOS tube Q2, and the power supply current provided by the battery 1 will enter the lamp 5 through the relay 3 and the MOS tube Q2 to light the lamp 5. At the same time, the second TVS tube T2 and the second filtering subunit 12 are provided in the second interface circuit 7, so that the second TVS tube T2 can prevent instantaneous voltage shocks and the second filtering subunit 12 can effectively output a stable DC signal to the MOS tube Q2.

[0044] In some embodiments, the structure of the first filtering subunit 11 is the same as the structure of the second filtering subunit 12. Figure 2 As shown, the first filter subunit 11 or the second filter subunit 12 includes a second capacitor C2 and a third capacitor C3.

[0045] The first end of the second capacitor C2 is the first end of the first filter subunit 11 / the first end of the second filter subunit 12; the first end of the third capacitor C3 is connected to the second end of the second capacitor C2, and the second end of the third capacitor C3 is grounded. This arrangement plays a role in filtering the power supply enable signal.

[0046] In some embodiments, Figure 2 As shown, the second interface circuit 7 further includes a fourth capacitor C4, a second resistor R2 and a voltage regulator tube D2.

[0047] Among them, the first end of the fourth capacitor C4 is connected to the relay 3 and the source of the MOS tube Q2, and the second end of the fourth capacitor C4 is connected to the gate of the MOS tube Q2; the first end of the second resistor R2 is connected to the first end of the fourth capacitor C4 and the source of the MOS tube Q2, and the second end of the second resistor R2 is connected to the gate of the MOS tube Q2; the negative electrode of the voltage regulator tube D2 is connected to the first end of the fourth capacitor C4, the first end of the second resistor R2, and the source of the MOS tube Q2, and the positive electrode of the voltage regulator tube D2 is connected to the gate of the MOS tube Q2. Thus, the filtering and voltage stabilization of the MOS tube Q2 are realized.

[0048] In some embodiments, Figure 3 As shown, the first left lamp unit 21 or the first right lamp unit 22 further includes a DC / DC circuit 8, the input end of the DC / DC circuit 8 is connected to the output end of the second interface circuit 7, and the output end of the DC / DC circuit 8 is connected to the lamp 5. Thus, the battery voltage output by the second interface circuit 7, such as 13.5V, is converted by the DC / DC circuit 8, so as to provide the lamp 5 with the required driving voltage.

[0049] In some embodiments, Figure 1 As shown, the lamp module 2 further includes a second left lamp unit 23 and a second right lamp unit 24 .

[0050] Among them, the input end of the second left light unit 23 is connected to the first end of the first left light unit 21 and the first power supply end a of the control module 4; the input end of the second right light unit 24 is connected to the first end of the first right light unit 22 and the second power supply end b of the control module 4; wherein the second left light unit 23 and the second right light unit 24 are both powered by the control module 4.

[0051] Specifically, Figure 1 As shown, the lamp module 2 adopts a combined lamp structure. In this regard, in order to avoid the problem that the control module cannot be driven due to the power of the combined lamp becoming larger after superposition, the power supply of the first left lamp unit 21 and the first right lamp unit 22 is provided by the battery 1, while the second left lamp unit 23 and the second right lamp unit 24 are powered by the control module 4. That is to say, the control module 4 provides a power supply enable signal current through the power supply end, a part of which is used to drive the first interface circuit 6 to turn on, and a part of which is used to drive the second left lamp unit 23 and the second right lamp unit 24 to light up. Among them, due to the limitation of the first interface circuit 6, the first interface circuit 6 only needs a lower current, and most of the current will be used to power the second left lamp unit 23 and the second right lamp unit 24. That is, for the combined lamp, the control module 4 only needs to provide the power required by the power supply enable signal and part of the power supply power, and the total power will not exceed the driving power threshold of the control module 4, so it also fully meets the driving requirements, and there will be no problem that the control module cannot be driven due to the large lamp driving power.

[0052] The second aspect of the utility model provides a vehicle, such as Figure 4 As shown, the vehicle 20 includes the lamp driving device 10 of the above embodiment.

[0053] According to the vehicle 20 of the present invention, by adopting the lamp driving device 10, the problem that the control module cannot be driven due to the large lamp driving power can be solved.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0055] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A lamp driving device, characterized in that: include: Battery and light module; a relay, the relay being connected to the battery and the lamp module, and the relay being used to turn on or off the power supply from the battery to the lamp module; A control module is connected to the relay and the light module, and is used to send a power supply enable signal to the relay and the light module respectively, and the power supply enable signal is used to instruct the relay to be turned on.

2. The lamp driving device according to claim 1, characterized in that: The lamp module comprises: A first left-side lamp unit, wherein a first end of the first left-side lamp unit is connected to a first power supply end of the control module for receiving the power supply enable signal, and a second end of the first left-side lamp unit is connected to the relay; A first right lamp unit, wherein a first end of the first right lamp unit is connected to a second power supply end of the control module for receiving the power supply enable signal, and a second end of the first right lamp unit is connected to the relay.

3. The lamp driving device according to claim 2, characterized in that: The first left-side lamp unit or the first right-side lamp unit comprises: lamp; A first interface circuit, wherein an input end of the first interface circuit is connected to the first power supply end / the second power supply end; A second interface circuit, wherein a first input end of the second interface circuit is connected to the relay, a second input end of the second interface circuit is connected to an output end of the first interface circuit, and an output end of the second interface circuit is connected to the lamp.

4. The lamp driving device according to claim 3, characterized in that: The first interface circuit comprises: A first TVS tube, wherein a first end of the first TVS tube is connected to the first power supply end / the second power supply end, and a second end of the first TVS tube is grounded; A first filtering subunit, wherein a first end of the first filtering subunit is connected to the first end of the first TVS tube and the first power supply end / the second power supply end, and a second end of the first filtering subunit is grounded; a diode, wherein an anode of the diode is connected to a first end of the first filter subunit, a first end of the first TVS tube, and the first power supply end / the second power supply end; a first resistor, wherein a first end of the first resistor is connected to a cathode of the diode; a first capacitor, wherein a first end of the first capacitor is connected to a second end of the first resistor, and a second end of the first capacitor is grounded; A transistor, wherein the base of the transistor is connected to the second end of the first resistor, the collector of the transistor is connected to the second input end of the second interface circuit, and the emitter of the transistor is grounded.

5. The lamp driving device according to claim 4, characterized in that: The second interface circuit comprises: a second TVS tube, wherein a first end of the second TVS tube is connected to the relay, and a second end of the second TVS tube is grounded; A second filtering subunit, wherein a first end of the second filtering subunit is connected to a first end of the second TVS tube and the relay, and a second end of the second filtering subunit is grounded; A MOS tube, wherein the gate of the MOS tube is connected to the collector of the triode, the source of the MOS tube is connected to the first end of the second filter subunit, the first end of the second TVS tube, and the relay, and the drain of the MOS tube is connected to the lamp.

6. The lamp driving device according to claim 5, characterized in that: The first filtering subunit or the second filtering subunit comprises: A second capacitor, wherein a first end of the second capacitor is a first end of the first filter subunit / a first end of the second filter subunit; A third capacitor, wherein a first end of the third capacitor is connected to a second end of the second capacitor, and a second end of the third capacitor is grounded.

7. The lamp driving device according to claim 5, characterized in that: The second interface circuit also includes: a fourth capacitor, wherein a first end of the fourth capacitor is connected to the relay and the source of the MOS tube, and a second end of the fourth capacitor is connected to the gate of the MOS tube; a second resistor, wherein a first end of the second resistor is connected to the first end of the fourth capacitor and the source of the MOS transistor, and a second end of the second resistor is connected to the gate of the MOS transistor; A voltage regulator tube, wherein a cathode of the voltage regulator tube is connected to a first end of the fourth capacitor, a first end of the second resistor, and a source of the MOS tube, and a cathode of the voltage regulator tube is connected to a gate of the MOS tube.

8. The lamp driving device according to claim 3, characterized in that: The first left light unit or the first right light unit further includes: A DC / DC circuit, wherein an input end of the DC / DC circuit is connected to an output end of the second interface circuit, and an output end of the DC / DC circuit is connected to the lamp.

9. The lamp driving device according to any one of claims 2 to 8, characterized in that: The lamp module further comprises: a second left-side lamp unit, wherein an input end of the second left-side lamp unit is connected to a first end of the first left-side lamp unit and a first power supply end of the control module; a second right-side lamp unit, wherein an input end of the second right-side lamp unit is connected to a first end of the first right-side lamp unit and a second power supply end of the control module; Wherein, the second left light unit and the second right light unit are both powered by the control module.

10. A vehicle, characterized in that: A lamp driving device comprising the lamp driving device according to any one of claims 1 to 9.

Images