Vehicle lamp control system, vehicle lamp system and motor vehicle

Abstract

The present application provides a vehicle lamp control system (100), which comprises: a main control circuit (110), the main control circuit being configured to receive an external control signal (S0) of a vehicle body controller (300), and output a first control signal (S1) and a second control signal (S2) according to the external control signal; a main drive circuit (10), the main drive circuit being configured to receive the first control signal (S1), and drive an action of a main vehicle lamp module (210) according to the first control signal; and at least one secondary drive circuit (20), each said secondary drive circuit being configured receive the second control signal (S2), and drive an action of a corresponding secondary vehicle lamp module (220) according to the second control signal.

Description

Vehicle lamp control system, vehicle lamp system and motor vehicle

[0001] The present application relates to the technical field of vehicle lamps, and more specifically to a vehicle lamp control system, a vehicle lamp system and a motor vehicle.

[0002] In the technical field of lighting, various lighting or signalling devices are known for providing light for lighting or signalling. For example, vehicle lamps are used in motor vehicles to provide lighting or signalling functions, in order to ensure safe travel or provide an ornamental function.

[0003] Vehicle lamp systems generally comprise a vehicle lamp control system and a vehicle lamp module; the vehicle lamp control system acts as a control circuit of the vehicle lamp module, with the purpose of controlling an action of the vehicle lamp module according to an external control signal of a vehicle body. Vehicle lamp systems of motor vehicles generally comprise multiple vehicle lamp modules, and respective control circuits must be configured for the multiple vehicle lamp modules; for example, a headlamp requires at least two controllers, and a taillamp requires at least four controllers. This causes the architecture of the whole vehicle lamp control system to be very complicated, and costs are higher.

[0004] In addition, the applicant has also noted that a domain controller of a vehicle body may be used as an overall control circuit of multiple vehicle lamp modules, and control circuits of a vehicle lamp system can be saved on by integrating control logic of the vehicle lamp modules into the domain controller of the vehicle body. However, this places higher demands on body domain controllers of vehicle manufacturers, increasing the difficulty of developing body domain controllers; moreover, the difficulty of later maintenance of the vehicle lamp system is also increased.

[0005] Therefore, there really is an urgent need at present to propose a low-cost vehicle lamp system that has a simple architecture and that is not limited by a motor vehicle domain controller.Summary of the Invention

[0006] An objective of the present application is to overcome at least one of the problems and shortcomings in the prior art.

[0007] A first aspect of the present application provides a vehicle lamp control system, which comprises:

[0008] a main control circuit, the main control circuit being configured to receive an external control signal of a vehicle body controller, and output a first control signal and a second control signal according to the external control signal;

[0009] a main drive circuit, the main drive circuit being configured to receive the first control signal, and drive an action of a main vehicle lamp module according to the first control signal; and

[0010] at least one secondary drive circuit, each said secondary drive circuit being configured receive the second control signal, and drive an action of a corresponding secondary vehicle lamp module according to the second control signal.

[0011] In some embodiments, the main vehicle lamp module comprises one of a left headlamp or a right headlamp, and the main drive circuit is used for driving the headlamp;

[0012] the secondary vehicle lamp module comprises the other of the left headlamp and right headlamp, and a corresponding said secondary drive circuit is used for driving said other headlamp.

[0013] In some embodiments, each said headlamp comprises a high-beam lamp, a low-beam lamp and a signal lamp;

[0014] the signal lamp comprises a daytime running lamp, a position lamp and a turn signal lamp.

[0015] In some embodiments, the main vehicle lamp module comprises one of a left taillamp or a right taillamp, and the main drive circuit is used for driving the taillamp;

[0016] the secondary vehicle lamp module comprises the other of the left taillamp and right taillamp, and a corresponding said secondary drive circuit is used for driving said other taillamp.

[0017] In some embodiments, each said taillamp comprises a clearance lamp, a turn signal lamp, a brake lamp and a reversing lamp.

[0018] In some embodiments, the secondary vehicle lamp module comprises at least one of a panel lamp, a logo lamp and an interior trim lamp, and the corresponding secondary drive circuit is used for driving the corresponding said secondary vehicle lamp module.

[0019] In some embodiments, the main control circuit comprises a first main signal transmission circuit, a main controller and a second main signal transmission circuit, the first main signal transmission circuit being configured to receive the external control signal, and transmit the external control signal to the main controller, the main controller being configured to output the first control signal and the second control signal according to the external control signal, and the second main signal transmission circuit being configured to output the second control signal to at least one said secondary drive circuit;

[0020] each said secondary drive circuit comprises a secondary signal transmission circuit and a secondary driver, the secondary signal transmission circuit being configured to receive the second control signal and transmit the second control signal to the secondary driver, and the secondary driver being configured to drive an action of a corresponding said secondary vehicle lamp module according to the second control signal.

[0021] In some embodiments, the external control signal output from the vehicle body controller is a CAN signal, a CANFD signal, a LIN signal or an Ethernet signal;

[0022] the first control signal is an SPI signal or a UART signal;

[0023] the second control signal output by the second main signal transmission circuit is a CAN signal or a UART signal.

[0024] In some embodiments, the main control circuit and the main drive circuit are integrated together to form a main drive module;

[0025] the main drive circuit comprises a DCDC controller and a DCDC converter, the DCDC controller being configured to output a switch signal according to the first control signal, and the DCDC converter being configured to perform a switch action according to the switch signal output by the DCDC controller, thereby driving an action of the main vehicle lamp module;

[0026] the secondary drive circuit comprises a DCDC controller and a DCDC converter, the DCDC controller being configured to output a switch signal according to the second control signal, and the DCDC converter being configured to perform a switch action according to the switch signal output by the DCDC controller, thereby driving an action of the secondary vehicle lamp module.

[0027] In some embodiments, the main drive module and the secondary drive circuit respectively comprise a power source input circuit, the power source input circuit being configured to receive an input voltage provided by a vehicle body power source;

[0028] the main drive module further comprises a booster controller and a booster converter, the booster controller being configured to output a switch signal according to the first control signal, and the booster converter being configured to perform a switch action according to the switch signal output by the booster controller, thereby converting a voltage received from the power source input circuit into a desired voltage;

[0029] the secondary drive circuit further comprises a booster controller and a booster converter, the booster controller being configured to output a switch signal according to the second control signal, and the booster converter being configured to perform a switch action according to the switch signal output by the booster controller, thereby converting a voltage received from the power source input circuit into a desired voltage.

[0030] In some embodiments, the main control circuit is configured to bypass the external control signal output by the vehicle body controller to at least one said secondary drive circuit.

[0031] In some embodiments, the main control circuit is used for completing a periodic task, the periodic task comprising at least one of fault management, a regulation requirement, NTC detection and BIN current detection;

[0032] the vehicle body controller is used for completing an event-based task, the event-based task comprising at least one of logic control of a headlamp and logic control of a panel lamp.

[0033] A second aspect of the present application provides a vehicle lamp system, which comprises the vehicle lamp control system and multiple vehicle lamp modules as provided in the first aspect and the embodiments above;

[0034] the multiple vehicle lamp modules comprise a main vehicle lamp module and at least one secondary vehicle lamp module;

[0035] the main drive circuit is used for driving the main vehicle lamp module, and each said secondary drive circuit is used for driving a corresponding said secondary vehicle lamp module.

[0036] A third aspect of the present application provides a motor vehicle, which comprises the vehicle lamp system as provided in the second aspect;

[0037] a vehicle body controller, which is configured to provide the external control signal to the vehicle lamp system; and

[0038] a vehicle body power source, which is configured to provide a power signal to the vehicle lamp system.Brief Description of the Drawings

[0039] shows a circuit architecture schematic diagram of a vehicle lamp control system provided by a first embodiment of the present application;

[0040] shows a circuit architecture schematic diagram of a main control circuit and a secondary drive circuit in;

[0041] shows a circuit schematic diagram of a main drive circuit and a secondary drive circuit in;

[0042] shows a circuit architecture schematic diagram of a vehicle lamp control system provided by a second embodiment of the present application;

[0043] shows a circuit architecture schematic diagram of a vehicle lamp control system provided by a third embodiment of the present application;

[0044] shows a circuit architecture schematic diagram of a vehicle lamp control system provided by a fourth embodiment of the present application.Detailed Description of Embodiments

[0045] Embodiments of the present application will be described in detail below with reference to the drawings. It should be understood that the embodiments of the present application are mainly for illustrating possible implementations of the technical solution of the present application and should not be construed as limiting the technical solution of the present application. In this specification, identical or similar parts are indicated by identical or similar reference numerals. An electrical connection means a direction electrical connection or an indirect electrical connection by means of another electronic component.

[0046] shows a circuit architecture schematic diagram of a vehicle lamp control system 100 provided by a first embodiment of the present application;shows a circuit architecture schematic diagram of a main control circuit 110 and a secondary drive circuit 20 in;shows a circuit schematic diagram of a main drive circuit 10 and a secondary drive circuit 20 in.

[0047] As shown in Figs. 1 - 3, the first embodiment of the present application provides a vehicle lamp control system 100. The vehicle lamp control system 100 is electrically connected between a vehicle body controller 300 and a vehicle lamp module 200; this vehicle lamp control system 100 may be used for receiving an external control signal S0 emitted by the vehicle body controller 300, and driving a vehicle lamp module 200 according to this external control signal S0 that has been received, such that the vehicle lamp module 200 emits target light, realizing a required lighting, signalling or decorative function.

[0048] The vehicle lamp control system 100 comprises a main control circuit 110, a main drive circuit 10 and at least one secondary drive circuit 20. The main control circuit 110 is electrically connected to the vehicle body controller 300, the main control circuit 110 being configured to receive an external control signal S0 emitted by the vehicle body controller 300, and output a first control signal S1 and a second control signal S2 according to the external control signal S0. The main drive circuit 10 is electrically connected between the main control circuit 110 and a main vehicle lamp module 210, the main drive circuit 10 being configured to receive the first control signal S1, and drive an action of the main vehicle lamp module 210 according to the first control signal S1, such that the main vehicle lamp module 210 may emit target light. The number of secondary drive circuits 20 may be one or more, and, correspondingly, the number of secondary vehicle lamp modules 220 may be one or more. Each secondary drive circuit 20 is electrically connected between the main control circuit 110 and the corresponding secondary vehicle lamp module 220, each secondary drive circuit 20 being configured to receive the second control signal S2, and drive an action of the corresponding secondary vehicle lamp module 220 according to the second control signal that has been received, enabling the secondary vehicle lamp module 220 to emit target light.

[0049] In the vehicle lamp control system 100 of the present first embodiment, control of a main drive circuit 10 and at least one secondary drive circuit 20 can be realized by means of a main control circuit 110, thereby driving a main vehicle lamp module 210 and at least one secondary vehicle lamp module 220; that is, multiple vehicle lamp modules 200 can be driven by means of one main control circuit 110. This can reduce the number of main control modules in a vehicle lamp system, to save on hardware costs. In addition, it can retain at least a portion of control logic of a vehicle lamp module in the vehicle lamp system, reducing the difficulty for OEMs in developing the vehicle body controller 300, saving on hardware resources and software resources of the OEM. Finally, it can facilitate maintenance and aftersales care of the vehicle lamp system when a terminal client encounters a fault.

[0050] In some embodiments, the main vehicle lamp module 210 may be one of a left headlamp or a right headlamp, and the secondary vehicle lamp module 220 may be the other of the left headlamp and the right headlamp. For example, the main vehicle lamp module 210 is a left headlamp, and the secondary vehicle lamp module 220 is a right headlamp; the main drive circuit 10 is used for driving this left headlamp, and the secondary drive circuit 20 is used for driving this right headlamp. Of course, in some other embodiments, the main vehicle lamp module 210 may also be a right headlamp, and the secondary vehicle lamp module 220 is a left headlamp; the main drive circuit 10 is used for driving this right headlamp, and the secondary drive circuit 20 is used for driving this left headlamp. In this case, the headlamp generally comprises a high-beam lamp, a low-beam lamp and a signal lamp. The signal lamp comprises a daytime running lamp, a position lamp and a turn signal lamp.

[0051] In these embodiments, the whole headlamp including the left headlamp and the right headlamp only uses one main control circuit 110; compared with the scenario known by the applicant of a left headlamp and a right headlamp respectively using respective main control circuits, the vehicle lamp control system 100 of this embodiment may dispense with one main control circuit, which can significantly reduce headlamp costs.

[0052] In some embodiments, the main vehicle lamp module 210 may be one of a left taillamp or a right taillamp, and the secondary vehicle lamp module 220 comprises the other of the left taillamp and the right taillamp. For example, the main vehicle lamp module 210 is a left taillamp, and the secondary vehicle lamp module 220 is a right taillamp; the main drive circuit 10 is used for driving this left taillamp, and the secondary drive circuit 20 is used for driving this right taillamp. Of course, in some other embodiments, the main vehicle lamp module 210 may also be a right taillamp, and the secondary vehicle lamp module 220 is a left taillamp; the main drive circuit 10 is used for driving this right taillamp, and the secondary drive circuit 20 is used for driving this left taillamp. In this case, the taillamp generally comprises a clearance lamp, a turn signal lamp, a brake lamp and a reversing lamp.

[0053] In these embodiments, the whole taillamp including the left taillamp and the right taillamp only uses one main control circuit 110; compared with the scenario known by the applicant of a left taillamp and a right taillamp respectively using respective main control circuits, the vehicle lamp control system 100 of this embodiment may dispense with at least one main control circuit, which can significantly reduce taillamp costs.

[0054] As shown in, in the vehicle lamp control system 100 of the first embodiment, the main control circuit 110 comprises a first main signal transmission circuit 111, a main controller 115 and a second main signal transmission circuit 112. The first main signal transmission circuit 111 is electrically connected between the vehicle body controller 300 and the main controller 115, the first main signal transmission circuit 111 being configured to receive an external control signal S0 output by the vehicle body controller 300, and transmit this external control signal S0 to the main controller 115. The main controller 115 is configured to output a first control signal S1 and a second control signal S2 according to the external control signal S0 received from the first main signal transmission circuit 111. The main controller 115 is electrically connected to the main drive circuit 10 and the second main signal transmission circuit 112, and the main controller 115 is configured to transmit the first control signal S1 to the main drive circuit 10. The second main signal transmission circuit 112 is electrically connected to the secondary drive circuit 20, and the second main signal transmission circuit 112 is configured to output the second control signal S2 to at least one secondary drive circuit 20.

[0055] Each secondary drive circuit 20 comprises a secondary signal transmission circuit 21 and a secondary driver 22. The secondary signal transmission circuit 21 is electrically connected between the second main signal transmission circuit 112 and the secondary driver 22. The secondary signal transmission circuit 21 is configured to receive the second control signal S2, and transmit the second control signal S2 to the secondary driver 22. The secondary driver 22 is electrically connected to the corresponding secondary vehicle lamp module 220, the secondary driver 22 being configured to drive an action of the corresponding secondary vehicle lamp module 220 according to the second control signal S2 received from the vehicle lamp transmission circuit 21.

[0056] In some embodiments, the external control signal S0 output from the vehicle body controller 300 is a CAN signal, a CANFD signal, a LIN signal or an Ethernet signal. The first control signal S1 is an SPI signal or a UART signal. The second control signal S2 output by the second main signal transmission circuit 112 is a CAN signal or a UART signal.

[0057] As shown in, in the vehicle lamp control system 100 of the first embodiment, the main control circuit 110 and the main drive circuit 10 may be integrated together to form a main drive module 101. The main control circuit 110 comprises a first main signal transmission circuit 111, a main controller 115 and a second main signal transmission circuit 112.

[0058] The main drive circuit 10 comprises a DCDC controller and a DCDC converter. 3 DCDC controllers are respectively a DCDC controller 01, a DCDC controller 02 and a DCDC controller 03, and 6 DCDC converters are respectively a DCDC converter 1, a DCDC converter 2, a DCDC converter 3, a DCDC converter 4, a DCDC converter 5 and a DCDC converter 6. The main vehicle lamp module 210 comprises 6 LEDs, and the 6 LEDs are respectively D1, D2, D3, D4, D5 and D6. The DCDC controllers 01, 02 and 03 are configured to output a switch signal according to the first control signal S1, and the DCDC converters 1, 2, 3, 4, 5 and 6 are configured to perform a switch action according to the switch signal output by the corresponding DCDC controller, thereby driving an action of the LEDs in the main vehicle lamp module 210.

[0059] The secondary drive circuit 20 is not provided with an independent main control circuit, and the secondary drive circuit 20 comprises a DCDC controller and a DCDC converter. 3 DCDC controllers are respectively a DCDC controller 01, a DCDC controller 02 and a DCDC controller 03, and 6 DCDC converters are respectively a DCDC converter 1, a DCDC converter 2, a DCDC converter 3, a DCDC converter 4, a DCDC converter 5 and a DCDC converter 6. The secondary vehicle lamp module 220 comprises 6 LEDs, and the 6 LEDs are respectively D7, D8, D9, D10, D11 and D12. The DCDC controllers 01, 02 and 03 are configured to output a switch signal according to the second control signal S2, and the DCDC converters 1, 2, 3, 4, 5 and 6 are configured to perform a switch action according to the switch signal output by the corresponding DCDC controller, thereby driving an action of LEDs in the secondary vehicle lamp module 220. It is worth explaining that the numbers of DCDC controllers, DCDC converters and LEDs in this embodiment are all schematic, and the numbers of these components may be other values in other embodiments.

[0060] Further, in the vehicle lamp control system 100 of this first embodiment, the main drive module 101 comprises a power source input circuit 13, and the secondary drive circuit 20 comprises a power source input circuit 23. The power source input circuits 13 and 23 are respectively electrically connected to a vehicle body power source 400, and the power source input circuits 13 and 23 are respectively configured to receive an input voltage V0 provided by the vehicle body power source 400. The power source input circuit 13 may directly provide the received input voltage V0 to the main controller 115, or, after voltage conversion, provide a converted voltage V1 to the main controller 115.

[0061] The main drive module 101 further comprises a booster controller 04 and a booster converter 05, the booster controller 04 of the main drive module 101 being configured to output a switch signal according to the first control signal S1, and the booster converter 05 of the main drive module 101 being configured to perform a switch action according to the switch signal output by the booster controller 04, thereby converting a voltage V2 received from the power source input circuit 13 into a desired voltage V3, and outputting the desired voltage to the DCDC converters 1, 2, 3, 4, 5 and 6 of the main drive module 101.

[0062] The secondary drive circuit 20 further comprises a booster controller 04 and a booster converter 05, the booster controller 04 of the secondary drive circuit 20 being configured to output a switch signal according to the second control signal S2, and the booster converter of the secondary drive circuit 20 being configured to perform a switch action according to the switch signal output by the booster controller 04, thereby converting a voltage V2 received from the power source input circuit 23 into a desired voltage V3, and outputting the desired voltage to the DCDC converters 1, 2, 3, 4, 5 and 6 of the secondary drive circuit 20.

[0063] In the first embodiment as shown in, the main control circuit 110 and the main drive circuit 10 are integrated together to form a whole main drive module 101, and, with regard to physical structure, the main drive module 101 can be formed as a modular structure. Of course, in some variant embodiments, the main control circuit 110 may also be independently provided, rather than integrated on any drive circuit.

[0064] shows a circuit architecture schematic diagram of a vehicle lamp control system 100 provided by a second embodiment of the present application. As shown in, compared with the first embodiment shown in Figs. 1 - 3 of the vehicle lamp control system 100 only including one secondary drive circuit 20, the number of secondary drive circuits 20 in the vehicle lamp control system 100 of the second embodiment is not limited to one. In this second embodiment, the vehicle lamp control system 100 comprises a main drive circuit 10 and two secondary drive circuits 20, the two secondary drive circuits 20 respectively being a first secondary drive circuit 20-1 and a second secondary drive circuit 20-2. A vehicle lamp module 200 comprises a main vehicle lamp module 210 and two secondary vehicle lamp modules, the two secondary vehicle lamp modules respectively being a first secondary vehicle lamp module 221 and a second secondary vehicle lamp module 222. The main drive circuit 10 is used for driving the main vehicle lamp module 210; the first secondary drive circuit 20-1 is used for driving the first secondary vehicle lamp module 221, and the second secondary drive circuit 20-2 is used for driving the second secondary vehicle lamp module 222.

[0065] The vehicle lamp module 210 and the first secondary vehicle lamp module 221 of the second embodiment may respectively be identical to the vehicle lamp module 210 and the secondary vehicle lamp module 20 of the first embodiment. For example, the main vehicle lamp module 210 is one of a left headlamp or right headlamp, and the first secondary vehicle lamp module 221 is the other of the left headlamp and right headlamp. Alternatively, the main vehicle lamp module 210 is one of a left taillamp or right taillamp, and the first secondary vehicle lamp module 221 is the other of the left taillamp and right taillamp; other content identical to the first embodiment is not further repeatedly described here.

[0066] The second secondary vehicle lamp module 222 may comprise at least one of a panel lamp, a logo lamp and an interior trim lamp, and the corresponding second secondary drive circuit 20-2 is used for driving the corresponding said second secondary vehicle lamp module. The panel lamp may be a front grille lamp, the logo lamp may be a front logo lamp or a rear logo lamp, and the interior trim lamp may be a reading lamp or an ambient lamp. It is worth explaining that the second secondary drive circuit 20-2 may further be used for driving a second secondary vehicle lamp module 222 of another type; here, types of the second secondary vehicle lamp module 222 are not enumerated one by one.

[0067] In the vehicle lamp control system 100 of the second embodiment, by comprising more secondary drive circuits 20, the main control circuit 110 can play a more powerful role; one main control circuit 110 can drive 1 main vehicle lamp module 210 and 2 secondary vehicle lamp modules 220. It is worth explaining that, as well as the number of secondary vehicle lamp modules 220 being one or two, in some other embodiments, the number of secondary vehicle lamp modules 220 may also be 3, 4 or even more. The secondary drive circuits in the corresponding vehicle lamp control system 100 are also 3, 4 or even more in number.

[0068] shows a circuit architecture schematic diagram of a vehicle lamp control system 100 provided by a third embodiment of the present application. As shown in, the vehicle lamp control system 100 comprises a main drive module 101 and 7 secondary drive circuits 20. A main control circuit 110 and a main drive circuit 10 are integrated in the main drive module 101, the main control circuit 110 comprising a first main signal transmission circuit 111, a main controller 115 and a second main signal transmission circuit 112. 5 secondary drive circuits 20 are respectively a first secondary drive circuit 20-1, a second secondary drive circuit 20-2, third secondary drive circuit 20-3, a fourth secondary drive circuit 20-4 and a fifth secondary drive circuit 20-5. Each secondary drive circuit 20 contains a secondary signal transmission circuit 21 and a secondary driver 22, and the specific type thereof may be similar to the first embodiment.

[0069] In this third embodiment, the vehicle lamp control system 100 may be used for driving a main vehicle lamp module and 5 secondary vehicle lamp modules. The main drive circuit 10 is used for driving the main vehicle lamp module. 5 secondary drive circuits 20 drive 5 secondary vehicle lamp modules in one-to-one correspondence.

[0070] For example, the main vehicle lamp module 210 may be a left headlamp, and the 5 secondary vehicle lamp modules 220 may respectively be a right headlamp, a front panel / logo lamp, a left taillamp, a right taillamp and a rear logo lamp. The main drive circuit 10 is used for driving the left headlamp; the first secondary drive circuit 20-1 is used for driving the right headlamp, the second secondary drive circuit 20-2 is used for driving the front panel / logo lamp, the third secondary drive circuit 20-3 is used for driving the left taillamp, the fourth secondary drive circuit 20-4 is used for driving the right taillamp, and the fifth secondary drive circuit 20-5 is used for driving the rear logo lamp.

[0071] In addition, all external vehicle lamp modules of a whole motor vehicle are controlled by one main control circuit 110, which may significantly reduce the cost of the vehicle lamp control system 100. Even further, one main control circuit 110 can be used to drive all external vehicle lamp modules and all interior trim lamps; at this stage, all vehicle lamp modules of the whole motor vehicle are controlled only by one main control circuit 110, without needing to arrange multiple main control circuits in the vehicle lamp control system 100, which further reduces the cost of the whole vehicle lamp control system 100.

[0072] shows a circuit architecture schematic diagram of a vehicle lamp control system 100 provided by a fourth embodiment of the present application. As shown in, in this fourth embodiment, the vehicle lamp control system 100 comprises a main control circuit 110, a main drive circuit 10 and two secondary drive circuits 20, the two secondary drive circuits 20 respectively being a first secondary drive circuit 20-1 and a second secondary drive circuit 20-2. The main control circuit 110 may be configured to output a first control signal S1 and a second control signal S2 according to an external control signal S0, and respectively uses the first control signal S1 and the second control signal S2 to control the main drive circuit 10 and the first secondary drive circuit 20-1. In addition, the main control circuit 110 may further be configured to bypass the external control signal S0 output by a vehicle body controller 300 to at least one secondary drive circuit 20. For example, the main control circuit 110 may directly bypass the external control signal to the second secondary drive circuit 20-2.

[0073] In some embodiments, the main control circuit 110 is used for completing some periodic tasks, a common periodic task comprising fault management, a regulation requirement, NTC detection and BIN. The vehicle body controller 300 is used for completing some event-based tasks, a common event-based task comprising logic control of a headlamp and logic control of a panel lamp.

[0074] In the above embodiments, the vehicle lamp control system 100 comprises a main control circuit 110, a main drive circuit 10 and at least one secondary drive circuit 20. The number of secondary drive circuits 20 may be one, two or even more. The main drive circuit 10 is electrically connected between a main control circuit 110 and a main vehicle lamp module 210, and the main drive circuit 10 drives the main vehicle lamp module 210 according to the first control signal S1 output by the main control circuit 110. Each secondary drive circuit 20 is electrically connected to a corresponding secondary vehicle lamp module 220; one or more secondary drive circuits 20 are respectively connected to the main control circuit 110 by means of a communication bus, and one or more secondary drive circuits 20 respectively drive the corresponding secondary vehicle lamp module 220 according to the second control signal S2 output by the main control circuit 110. The can significantly reduce the number of main control circuits 110 in the vehicle lamp control system 100, saving on costs. In addition, it also facilitates solving the problem of synchronizing multiple main control circuits 110 in the prior art, which can reduce real-time costs for network security, and it is easy to upgrade functions of a client and add other vehicle lamp modules.

[0075] Embodiments of the present application also provide a vehicle lamp system, which comprises the vehicle lamp control system 100 described in any one of the embodiments above. In addition, this vehicle lamp system further comprises a vehicle lamp module 200, wherein the number of vehicle lamp modules 200 is more than one. Specifically, the vehicle lamp modules 200 comprise a main vehicle lamp module 210 and at least one secondary vehicle lamp module 220. The number of secondary vehicle lamp modules 220 may be one or more. The main drive circuit 10 is electrically connected to the main vehicle lamp module 210, and the main drive circuit 10 is used for driving the main vehicle lamp module 210. Each secondary drive circuit 20 is electrically connected to a corresponding secondary vehicle lamp module 220, and each secondary drive circuit 20 is used for driving the corresponding secondary vehicle lamp module 220.

[0076] An embodiment of the present application further provides a motor vehicle, which comprises the vehicle lamp system described in any of the above embodiments. In addition, the motor vehicle further comprises a vehicle body controller 300 and a vehicle body power source 400. The vehicle body controller 300 is configured to provide an external control signal S0 to the vehicle lamp system; the vehicle body power source 400 is configured to provide a power signal to the vehicle lamp system.

[0077] Although the present application has been described in view of the drawings, the embodiments disclosed in the drawings are intended to exemplarily illustrate preferred embodiments of the present application and should not be construed as limiting the present application. The dimensional proportions in the drawings are merely schematic, and must not be construed as limiting the present application.

[0078] Although some embodiments of the general concept of the present application have been shown and explained, those skilled in the art will understand that the present application may comprise other further equivalent embodiments without departing from the general inventive concept of the present application, and the scope of protection of the present application is defined by the claims.

Claims

Vehicle lamp control system (100), characterized by comprising:a main control circuit (110), the main control circuit being configured to receive an external control signal (S0) of a vehicle body controller (300), and output a first control signal (S1) and a second control signal (S2) according to the external control signal;a main drive circuit (10), the main drive circuit being configured to receive the first control signal (S1), and drive an action of a main vehicle lamp module (210) according to the first control signal; andat least one secondary drive circuit (20), each said secondary drive circuit being configured to receive the second control signal (S2), and drive an action of a corresponding secondary vehicle lamp module (220) according to the second control signal.Vehicle lamp control system according to Claim 1, wherein the main vehicle lamp module (210) comprises one of a left headlamp or a right headlamp, and the main drive circuit (10) is used for driving the headlamp;the secondary vehicle lamp module (220) comprises the other of the left headlamp and right headlamp, and a corresponding said secondary drive circuit (20) is used for driving said other headlamp.Vehicle lamp control system according to Claim 2, wherein each said headlamp comprises a high-beam lamp, a low-beam lamp and a signal lamp;the signal lamp comprises a daytime running lamp, a position lamp and a turn signal lamp.Vehicle lamp control system according to Claim 1, wherein the main vehicle lamp module (210) comprises one of a left taillamp or a right taillamp, and the main drive circuit (10) is used for driving the taillamp;the secondary vehicle lamp module (220) comprises the other of the left taillamp and right taillamp, and a corresponding said secondary drive circuit (20) is used for driving said other taillamp.Vehicle lamp control system according to Claim 4, wherein each said taillamp comprises a clearance lamp, a turn signal lamp, a brake lamp and a reversing lamp.Vehicle lamp control system according to any one of Claims 2 to 5, wherein the secondary vehicle lamp module (220) comprises at least one of a panel lamp, a logo lamp and an interior trim lamp, and a corresponding said secondary drive circuit (20) is used for driving a corresponding said secondary vehicle lamp module.Vehicle lamp control system according to Claim 1, wherein the main control circuit (110) comprises a first main signal transmission circuit (111), a main controller (115) and a second main signal transmission circuit (112), the first main signal transmission circuit being configured to receive the external control signal (S0), and transmit the external control signal to the main controller, the main controller being configured to output the first control signal (S1) and the second control signal (S2) according to the external control signal, and the second main signal transmission circuit being configured to output the second control signal (S2) to at least one said secondary drive circuit;each said secondary drive circuit (20) comprises a secondary signal transmission circuit (21) and a secondary driver (22), the secondary signal transmission circuit (21) being configured to receive the second control signal (S2) and transmit the second control signal to the secondary driver, and the secondary driver (22) being configured to drive an action of a corresponding said secondary vehicle lamp module (220) according to the second control signal (S2).Vehicle lamp control system according to Claim 7, wherein the external control signal (S0) output from the vehicle body controller is a CAN signal, a CANFD signal, a LIN signal or an Ethernet signal;the first control signal (S1) is an SPI signal or a UART signal;the second control signal (S2) output by the second main signal transmission circuit is a CAN signal or a UART signal.Vehicle lamp control system according to Claim 7, wherein the main control circuit and the main drive circuit are integrated together to form a main drive module (101);the main drive circuit (10) comprises a DCDC controller and a DCDC converter, the DCDC controller being configured to output a switch signal according to the first control signal (S1), and the DCDC converter being configured to perform a switch action according to the switch signal output by the DCDC controller, thereby driving an action of the main vehicle lamp module (210);the secondary drive circuit (20) comprises a DCDC controller and a DCDC converter, the DCDC controller being configured to output a switch signal according to the second control signal (S2), and the DCDC converter being configured to perform a switch action according to the switch signal output by the DCDC controller, thereby driving an action of the secondary vehicle lamp module (220).Vehicle lamp control system according to Claim 9, wherein the main drive module and the secondary drive circuit respectively comprise a power source input circuit, the power source input circuit being configured to receive an input voltage (V0) provided by a vehicle body power source (400);the main drive module (101) further comprises a booster controller and a booster converter, the booster controller being configured to output a switch signal according to the first control signal (S1), and the booster converter being configured to perform a switch action according to the switch signal output by the booster controller, thereby converting a voltage received from the power source input circuit into a desired voltage;the secondary drive circuit (20) further comprises a booster controller and a booster converter, the booster controller being configured to output a switch signal according to the second control signal (S2), and the booster converter being configured to perform a switch action according to the switch signal output by the booster controller, thereby converting a voltage received from the power source input circuit into a desired voltage.Vehicle lamp control system according to Claim 1, wherein the main control circuit (110) is configured to bypass the external control signal (S0) output by the vehicle body controller to at least one said secondary drive circuit (20-2).Vehicle lamp control system according to Claim 1, wherein the main control circuit is used for completing a periodic task, the periodic task comprising at least one of fault management, a regulation requirement, NTC detection and BIN current detection;the vehicle body controller is used for completing an event-based task, the event-based task comprising at least one of logic control of a headlamp and logic control of a panel lamp.Vehicle lamp system, characterized in that the vehicle lamp system comprises the vehicle lamp control system (100) according to any one of Claims 1 - 12 and multiple vehicle lamp modules;the multiple vehicle lamp modules comprise a main vehicle lamp module (210) and at least one secondary vehicle lamp module (220);the main drive circuit (10) is used for driving the main vehicle lamp module, and each said secondary drive circuit (20) is used for driving a corresponding said secondary vehicle lamp module.Motor vehicle, characterized in that the motor vehicle comprises the vehicle lamp system according to Claim 13;a vehicle body controller (300), which is configured to provide the external control signal (S0) to the vehicle lamp system; anda vehicle body power source (400), which is configured to provide a power signal to the vehicle lamp system.

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