Vehicle lamp system and vehicle

Abstract

The utility model provides a vehicle lamp system and a vehicle, and belongs to the technical field of vehicle lamp control. The vehicle lamp system comprises a driving module, at least one light source group and at least one vehicle lamp control chip, each light source group comprises at least one light-emitting element, the light-emitting elements in each light source group are connected in series, a communication bus and at least one constant-current channel are arranged on the driving module, and a plurality of control ports are arranged on each vehicle lamp control chip; the driving module is in communication connection with the vehicle lamp control chip through a communication bus, and the driving module is connected with each light source group through each constant-current channel; each vehicle lamp control chip is connected with at least one light-emitting element in each light source group through a control port, and the driving module controls the output current of each control port of each vehicle lamp control chip through a communication bus. The vehicle lamp system can achieve the effects that the number of the constant-current channels in the vehicle lamp system is reduced and the production cost of the vehicle lamp system is saved while the function diversification of the vehicle lamp is met.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle lamp control, and more particularly, to a vehicle lamp system and a vehicle. Background Art

[0002] With the development of technology, the functions of vehicle lamps are not limited to simple lighting and signal indication. As an important communication window of a vehicle, a driver conveys traffic signals to pedestrians through vehicle lamps, such as turning, waiting, reversing, etc. Therefore, according to the functions of vehicle lamps under various working conditions in the actual driving scenario of a vehicle, the light-emitting elements arranged in the vehicle lamps are divided into multiple types, and a vehicle lamp system needs to arrange multiple constant current channels to support the operation of the light-emitting elements under different working conditions. However, due to traffic regulations, the current requirements for vehicle lamps are very strict. Therefore, there is an urgent need for a vehicle lamp system with low current requirements.

[0003] In the related art, to meet the diverse current requirements of vehicle lamps under different working conditions, multiple constant current channels are usually deployed in a vehicle system, and different current drives for the light-emitting elements are realized through each constant current channel. For example, to realize the operation of 32 light-emitting elements in a vehicle lamp under two different working conditions, it is necessary to output current through two constant current channels to meet the vehicle lamp control under different working conditions.

[0004] However, when dealing with the current requirements of vehicle lamps under different working conditions based on the related art, it is necessary to arrange multiple types of constant current channels to meet the current requirements of vehicle lamps under different working conditions, which will lead to an increase in the production cost of vehicle lamps. Summary of the Utility Model

[0005] The purpose of the present application is to provide a vehicle lamp system and a vehicle, which can achieve the effect of reducing the number of constant current channels in the vehicle lamp system and saving the production cost of the vehicle lamp system while meeting the diversification of vehicle lamp functions.

[0006] The embodiments of the present application are implemented as follows:

[0007] In a first aspect of an embodiment of the present application, a vehicle lamp system is provided. The vehicle lamp system includes: a driving module, at least one light source group, and at least one vehicle lamp control chip. Each light source group includes at least one light-emitting element, and the light-emitting elements in each light source group are connected in series. A communication bus and at least one constant current channel are arranged on the driving module, and multiple control ports are arranged on each vehicle lamp control chip;

[0008] The driving module is communicatively connected to the vehicle lamp control chip via the communication bus, and the driving module is connected to each light source group via each constant current channel;

[0009] Each vehicle lamp control chip is connected to at least one light-emitting element in each light source group via the control port, and the driving module controls the output current of each control port of each vehicle lamp control chip via the communication bus.

[0010] As a possible implementation, the vehicle lamp system includes: a first vehicle lamp control chip and a second vehicle lamp control chip. The driving module includes: a first constant current channel and a second constant current channel. The light source group includes: a first light source group and a second light source group;

[0011] The driving module is connected to the input end and the output end of the first light source group via the first constant current channel. The driving module is connected to the input end of the first vehicle lamp control chip via a communication bus. The first vehicle lamp control chip is connected to the input end of at least one light-emitting element in the first light source group via a control port;

[0012] The driving module is connected to the input end and the output end of the second light source group via the second constant current channel. The driving module is connected to the input end of the second vehicle lamp control chip via a communication bus. The second vehicle lamp control chip is connected to the input end of at least one light-emitting element in the second light source group via a control port.

[0013] As a possible implementation, the vehicle lamp system includes: a first vehicle lamp control chip. The driving module includes: a first constant current channel and a second constant current channel. The light source group includes: a first light source group and a second light source group;

[0014] The driving module is connected to the input end and the output end of the first light source group via the first constant current channel. The driving module is connected to the input end of the first vehicle lamp control chip via a communication bus. The first vehicle lamp control chip is connected to the input end of at least one light-emitting element in the first light source group via a control port;

[0015] The driving module is connected to the input end and the output end of the second light source group via the second constant current channel.

[0016] As a possible implementation, the driving module includes: a first constant current channel. The number of the light source groups is multiple, and at least part of the light source groups.

[0017] As a possible implementation, the vehicle lamp system includes: a first vehicle lamp control chip and a second vehicle lamp control chip. The light source group includes: a first light source group and a second light source group;

[0018] The driving module is connected to the input end of the first light source group via the first constant current channel. The driving module is connected to the output end of the second light source group via the first constant current channel. The output end of the first light source group is connected to the input end of the second light source group. The driving module is connected to the input ends of the first vehicle lamp control chip and the second vehicle lamp control chip via a communication bus;

[0019] The first vehicle lamp control chip is connected to the input end of at least one light-emitting element in the first light source group via a control port;

[0020] The second vehicle lamp control chip is connected to the input ends of at least one light-emitting element in the second light source group via a control port.

[0021] As a possible implementation, the vehicle lamp system includes: a first vehicle lamp control chip and a second vehicle lamp control chip. The driving module includes: a first constant current channel. The light source group includes: a first light source group, a second light source group, a third light source group, and a fourth light source group.

[0022] The driving module is connected to the input end of the first light source group via the first constant current channel, and the driving module is connected to the output end of the fourth light source group via the first constant current channel. The output end of the first light source group is connected to the input end of the second light source group, the output end of the second light source group is connected to the input end of the third light source group, and the output end of the third light source group is connected to the input end of the fourth light source group. The driving module is connected to the input ends of the first vehicle lamp control chip and the second vehicle lamp control chip via a communication bus.

[0023] The first vehicle lamp control chip is connected to the input ends of at least one light-emitting element in the first light source group and the input ends of at least one light-emitting element in the second light source group via a control port.

[0024] The second vehicle lamp control chip is connected to the input ends of at least one light-emitting element in the third light source group and the input ends of at least one light-emitting element in the fourth light source group via a control port.

[0025] As a possible implementation, the vehicle lamp system includes: a first vehicle lamp control chip. The driving module includes: a first constant current channel. The light source group includes: a first light source group, a second light source group, and a third light source group.

[0026] The driving module is connected to the input end of the first light source group via the first constant current channel, and the driving module is connected to the output end of the third light source group via the first constant current channel. The output end of the first light source group is connected to the input end of the second light source group, the output end of the second light source group is connected to the input end of the third light source group. The driving module is connected to the input end of the first vehicle lamp control chip via a communication bus.

[0027] The first vehicle lamp control chip is connected to the input ends of at least one light-emitting element in the first light source group and the input ends of at least one light-emitting element in the second light source group via a control port, and the first vehicle lamp control chip is further connected to the input ends of at least one light-emitting element in the third light source group via a control port.

[0028] As a possible implementation, the vehicle lamp system further includes: a temperature sampling circuit.

[0029] The input end of the temperature sampling circuit is connected to the driving module, the sampling end of the temperature sampling circuit is communicatively connected to the headlight control chip, the output end of the temperature sampling circuit is connected to the driving module, and the temperature sampling circuit is used to sample the operating temperature value of the headlight control chip in real time and feedback the sampled operating temperature value of the headlight control chip to the driving module.

[0030] As a possible implementation, the headlight system further includes: a brightness sampling circuit;

[0031] The input end of the brightness sampling circuit is connected to the driving module, the sampling end of the brightness sampling circuit is communicatively connected to each light source group, the output end of the brightness sampling circuit and the output end of the temperature sampling circuit are both connected to the driving module, and the brightness sampling circuit is used to sample the working brightness of each light source group in real time and feedback the sampled working brightness of each light source group to the driving module.

[0032] In the second aspect of the embodiments of the present application, a vehicle is provided, and the vehicle includes the headlight system described in the first aspect above.

[0033] The beneficial effects of the embodiments of the present application include:

[0034] A headlight system provided by an embodiment of the present application receives a headlight control signal sent by a vehicle controller through a driving module. The driving module conveys a driving current to each light source group via a constant current channel based on the received headlight control signal and sends the headlight control signal to the headlight control chip. The headlight control chip controls the on / off of each switch in the headlight control chip based on the received headlight control signal, thereby triggering the on / off of each control port of the headlight control chip, and further triggering the on / off of each light-emitting element connected to each control port, so that the light source group realizes a headlight signal interaction function and / or a lighting function adapted to the headlight control signal. In this way, while meeting the diverse functions of vehicle headlights, the number of constant current channels in the headlight system can be reduced, and the production cost of the headlight system can be saved. Description of the Drawings

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0036] Figure 1 It is a schematic structural diagram of the first headlight system provided by an embodiment of the present application;

[0037] Figure 2 It is a schematic structural diagram of the second headlight system provided by an embodiment of the present application;

[0038] Figure 3 Schematic diagram of the structure of the third headlight system provided by the embodiment of the present application;

[0039] Figure 4 Schematic diagram of the structure of the fourth headlight system provided by the embodiment of the present application;

[0040] Figure 5 Schematic diagram of the structure of the fifth headlight system provided by the embodiment of the present application;

[0041] Figure 6 Schematic diagram of the structure of the sixth headlight system provided by the embodiment of the present application;

[0042] Figure 7 Schematic diagram of the structure of the seventh headlight system provided by the embodiment of the present application;

[0043] Figure 8 Schematic diagram of the structure of the eighth headlight system provided by the embodiment of the present application;

[0044] Figure 9 Schematic diagram of the structure of a vehicle provided by the embodiment of the present application.

[0045] Reference numerals: 10: headlight system; 101: drive module; 1011: first constant current channel; 1012: second constant current channel; 1013: communication bus; 102: headlight control chip; 1021: first headlight control chip; 1022: second headlight control chip; 103: light source group; 1031: first light source group; 1032: second light source group; 1033: third light source group; 1034: fourth light source group; 104: temperature sampling circuit; 105: brightness sampling circuit; 20: vehicle. Detailed implementation manners

[0046] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some but not all of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated herein can be arranged and designed in various different configurations.

[0047] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0048] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0049] In the description of the present application, it should be noted that the terms "first", "second", "third", "fourth", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance. It should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0050] Currently, to meet the diverse current requirements of vehicle headlights under different working conditions, multiple constant current channels are often deployed in the headlight system, and the headlights of the vehicle are driven through each constant current channel to implement the signal functions corresponding to different working conditions. However, in this solution, the driving current requirements of each constant current channel are different, which results in the diverse current requirements of the vehicle's headlight system and increases the production cost of the vehicle's headlight system.

[0051] For this reason, the embodiments of the present application provide a headlight system. By deploying a headlight control chip in the headlight system to reduce the number of constant current channels in the headlight system, the driving module conveys the driving current and the headlight control signal to the headlight control chip via the communication bus based on the headlight control signal sent by the vehicle controller. The headlight control chip controls the on / off of each control port on the headlight control chip according to the headlight control signal, and then controls the on / off of each light-emitting element connected to the control port of the headlight control chip. In this way, it is possible to achieve the effect of reducing the number of constant current channels in the headlight system and saving the production cost of the headlight system while meeting the diverse functions of vehicle headlights.

[0052] The following will explain in detail the headlight system and the vehicle provided by the embodiments of the present application with reference to the drawings.

[0053] Figure 1 FIG. is a schematic structural diagram of a headlight system provided by the present application. Refer to Figure 1 , the embodiments of the present application provide a headlight system 10, which includes: a driving module 101, at least one light source group 103, and at least one headlight control chip 102. Each light source group 103 includes at least one light-emitting element, and the light-emitting elements in each light source group 103 are connected in series. The driving module 101 is provided with a communication bus and at least one constant current channel, and each headlight control chip 102 is provided with a plurality of control ports.

[0054] Optionally, the driving module 101 receives the headlight control signal sent by the vehicle controller. Based on the headlight control signal sent by the vehicle controller, the driving module 101 conveys driving current to each light source group 103 via a constant current channel. The driving module 101 sends the headlight control signal to each headlight control chip 102 via a communication bus. Each headlight control chip 102 controls the on / off of each control port based on the headlight control signal, and further controls the lighting and extinguishing of the light-emitting elements connected to each control port.

[0055] Optionally, a plurality of switches are arranged in the headlight control chip 102. Each switch corresponds to the function performed by the headlight system under each working condition. Among them, each switch is implemented by a transistor. Each switch can be an NMOS transistor or a PMOS transistor. This application does not make specific limitations in this regard.

[0056] Optionally, the headlight control chip 102 controls the on / off of each switch in the headlight control chip 102 based on the headlight control signal sent by the driving module 101 to trigger the on / off of each control port corresponding to each switch. Among them, the on / off of each switch is used to trigger the signal interaction function and / or lighting function of the headlights under a certain working condition corresponding to it. This application does not make specific limitations in this regard.

[0057] Optionally, the light-emitting element is an LED, a miniLED, a microLED or other light-emitting elements. This application does not make specific limitations in this regard.

[0058] Optionally, each light source group 103 can integrate light-emitting elements that perform multiple headlight signal interaction functions and / or lighting functions (such as high and low beam lighting functions), or can integrate light-emitting elements that perform a single headlight signal interaction function or lighting function. Each light source group 103 is formed by connecting each light-emitting element in series. When the light source group 103 only integrates light-emitting elements that perform a single headlight signal interaction function or lighting function, the light source group 103 can be directly driven by the driving module 101 via a constant current channel; when the light source group 103 integrates light-emitting elements that perform multiple headlight signal interaction functions and / or lighting functions, the light source group 103 needs to be controlled by the headlight control chip to turn on and off each control port, and further control the on / off of the corresponding light-emitting elements in the light source group. This application does not make specific limitations in this regard.

[0059] Optionally, when the light source group 103 integrates light-emitting elements with multiple vehicle lamp signal interaction functions and / or lighting functions, the driving module 101 outputs a driving current based on the maximum current requirements corresponding to the vehicle lamp interaction function and lighting function indicated by the vehicle lamp control signal issued by the vehicle controller. For example, if the vehicle lamp interaction function and lighting function indicated by the vehicle lamp control signal are low beam lights, corner lights, etc., assuming that the low beam light current > corner light current > accompanying low beam light current, the driving module outputs a driving current equal to the low beam light current. At the same time, the driving module 101 transmits the vehicle lamp control signal to the vehicle lamp control chip 102 via the communication bus, and the vehicle lamp control chip 102 controls the conduction of the corresponding switch based on the vehicle lamp control signal and triggers the conduction of the corresponding control port, so that the light-emitting element connected to the control port is energized.

[0060] The driving module 101, multiple light source groups 103, and at least one vehicle lamp control chip 102. Each light source group 103 includes at least one light-emitting element, and the light-emitting elements in each light source group 103 are connected in series. A communication bus and at least one constant current channel are arranged on the driving module 101, and multiple control ports are arranged on each vehicle lamp control chip 102.

[0061] Optionally, the driving module 101 can arrange fewer constant current channels to meet the multiple vehicle lamp signal interaction functions and / or lighting functions of the vehicle lamp system 10. The driving module 101 transmits the vehicle lamp control signal to the vehicle lamp control chip 102 based on the CAN protocol of the communication bus, and the vehicle lamp control chip 102 controls the on / off of each control port based on the received vehicle lamp control signal, thereby triggering the on / off of each light-emitting element connected to the control port.

[0062] Optionally, at least one vehicle lamp control chip 102 is arranged in the vehicle lamp system 10. The more vehicle lamp control chips 102 there are, the more dispersed the heat of the vehicle lamp control chips 102 is, and the higher the stability of the vehicle lamp system 10 is. Among them, the vehicle lamp control chip and the light source group are integrated on an empty PCB board, and the driving module 101 transmits the control signal to the PCB board via the communication bus 1013.

[0063] Optionally, a communication chip is integrated on the PCB board, and the driving module 101 transmits the vehicle lamp control signal to the communication chip via the communication bus 1013.

[0064] The driving module 101 is communicatively connected to the vehicle lamp control chip 102 via the communication bus 1013, and the driving module 101 is connected to each light source group 103 via each constant current channel.

[0065] Optionally, the driving module 101 transmits the vehicle lamp control signal to the vehicle lamp control chip 102 based on the CAN protocol of the communication bus 1013, and the driving module 101 conveys the driving current to each light source group 103 via the constant current channel based on the vehicle lamp control signal issued by the vehicle controller.

[0066] Each vehicle lamp control chip 102 is connected to at least one light-emitting element in each light source group 103 via a control port, and the driving module 101 controls the output current of each control port of each vehicle lamp control chip 102 via a communication bus 1013.

[0067] Optionally, the vehicle lamp control chip 102 triggers the on / off of each control port by controlling the on / off of a switch deployed in the vehicle lamp control chip 102, and further triggers the on / off of the light-emitting element connected to each control port.

[0068] Optionally, each control port of the vehicle lamp control chip 102 controls at least one light-emitting element, and each control port of the vehicle lamp control chip 102 can control multiple light-emitting elements. This application does not make specific limitations on this.

[0069] In the embodiment of this application, the driving module receives a vehicle lamp control signal sent by a vehicle controller. The driving module conveys a driving current to each light source group via a constant current channel based on the received vehicle lamp control signal, and sends the vehicle lamp control signal to the vehicle lamp control chip. The vehicle lamp control chip controls the on / off of each switch in the vehicle lamp control chip based on the received vehicle lamp control signal, and further triggers the on / off of each control port of the vehicle lamp control chip, and further triggers the on / off of each light-emitting element connected to each control port, so that the light source group realizes a vehicle lamp signal interaction function and / or a lighting function adapted to the vehicle lamp control signal. In this way, while meeting the diversification of vehicle lamp functions, the number of constant current channels in the vehicle lamp system can be reduced, and the production cost of the vehicle lamp system can be saved.

[0070] As an optional implementation manner, refer to Figure 2 , a vehicle lamp system 10 provided in the embodiment of this application includes: a first vehicle lamp control chip 1021 and a second vehicle lamp control chip 1022. The driving module 101 includes: a first constant current channel 1011 and a second constant current channel 1012. The light source group 103 includes: a first light source group 1031 and a second light source group 1032.

[0071] Optionally, the vehicle lamp system 10 conveys a driving current to each light source group through two constant current channels, namely the first constant current channel 1011 and the second constant current channel 1012, and controls the first light source group 1031 and the second light source group 1032 via the first vehicle lamp control chip 1021 and the second vehicle lamp control chip 1022. Among them, the first light source group 1031 and the second light source group 1032 can operate simultaneously or separately, and the first light source group 1031 and the second light source group 1032 execute the vehicle lamp signal interaction function and the lighting function without interference. This application does not make specific limitations on this.

[0072] The driving module 101 is connected to the input end and the output end of the first light source group 1031 via the first constant current channel 1011. The driving module 101 is connected to the input end of the first vehicle lamp control chip 1021 via the communication bus 1013. The first vehicle lamp control chip 1021 is connected to the input end of at least one light-emitting element in the first light source group 1031 via the control port.

[0073] Optionally, the first light source group 1031 and the second light source group 1032 may be formed by connecting in series light-emitting elements corresponding to various different vehicle lamp signal interaction functions and / or lighting functions. The vehicle lamp system 10 controls the on / off of each light-emitting element in the first light source group 1031 via each control port of the first vehicle lamp control chip 1021, and controls the on / off of each light-emitting element in the second light source group 1032 via each control port of the second vehicle lamp control chip 1022.

[0074] The driving module 101 is connected to the input end and the output end of the second light source group 1032 via the second constant current channel 1012. The driving module 101 is connected to the input end of the second vehicle lamp control chip 1022 via the communication bus 1013. The second vehicle lamp control chip 1022 is connected to the input end of at least one light-emitting element in the second light source group 1032 via the control port.

[0075] Optionally, the driving module 101 delivers driving current to the second light source group 1032 via the second constant current channel 1012, and the driving module 101 delivers driving current to the first light source group 1031 via the first constant current channel 1011.

[0076] As an optional implementation manner, refer to Figure 3 , a vehicle lamp system 10 provided in an embodiment of the present application includes: a first vehicle lamp control chip 1021, the driving module 101 includes: a first constant current channel 1011 and a second constant current channel 1012, and the light source group 103 includes: a first light source group 1031 and a second light source group 1032.

[0077] Optionally, the vehicle lamp system 10 controls the first light source group 1031 and the second light source group 1032 via the first vehicle lamp control chip 1021. Among them, the second light source group 1032 is only formed by connecting in series light-emitting elements with a single vehicle lamp signal interaction function or lighting function. The first light source group 1031 may be formed by connecting in series light-emitting elements with various vehicle lamp signal interaction functions and / or lighting functions, or may be formed by connecting in series light-emitting elements with a single vehicle lamp signal interaction function or lighting function. The present application does not make specific limitations on this.

[0078] The driving module 101 is connected to the input end and the output end of the first light source group 1031 via the first constant current channel 1011. The driving module 101 is connected to the input end of the first vehicle lamp control chip 1021 via the communication bus 1013. The first vehicle lamp control chip 1021 is connected to the input end of at least one light-emitting element in the first light source group 1031 via the control port.

[0079] Optionally, the driving module 101 sends a vehicle lamp control signal to the first vehicle lamp control chip 1021, and the first vehicle lamp control chip 1021 controls the on / off of each light-emitting element in the first light source group 1031 based on the vehicle lamp control signal.

[0080] The driving module 101 is connected to the input end and the output end of the second light source group 1032 via the second constant current channel 1012.

[0081] Optionally, the driving module 101 directly conveys a driving current to the second light source group 1032 via the second constant current channel 1012.

[0082] As an alternative implementation, see Figure 4 , in the driving module 101 of a vehicle lamp system 10 provided by an embodiment of the present application, it includes: a first constant current channel 1011. The light source group 103 includes: a plurality of light source groups, and the light source groups 103 are connected in series.

[0083] As an alternative implementation, see Figure 5 , a vehicle lamp system 10 provided by an embodiment of the present application includes: a first vehicle lamp control chip 1021 and a second vehicle lamp control chip 1022. The light source group 103 includes: a first light source group 1031 and a second light source group 1032.

[0084] Optionally, the vehicle lamp system 10 is only driven by the first constant current channel 1011 to drive each light source group 103 to implement vehicle lamp signals under different working conditions, and the first vehicle lamp control chip 1021 and the second vehicle lamp control chip 1022 jointly control the two light source groups.

[0085] Optionally, the first light source group 1031 and the second light source group 1032 respectively correspond to the signal interaction function and / or the lighting function of the vehicle lamp system under different working conditions. The first light source group 1031 and the second light source group 1032 can operate simultaneously or separately, and the present application does not make specific limitations thereon.

[0086] It should be noted that the first light source group 1031 and the second light source group 1032 can be formed by connecting light-emitting elements with a single signal interaction function or lighting function in series, or can be formed by connecting light-emitting elements with multiple signal interaction functions and / or lighting functions in series. The present application does not make specific limitations thereon.

[0087] The driving module 101 is connected to the input end of the first light source group 1031 via the first constant current channel 1011. The driving module 101 is connected to the output end of the second light source group 1032 via the first constant current channel 1011. The output end of the first light source group 1031 is connected to the input end of the second light source group 1032. The driving module 101 is connected to the input ends of the first vehicle lamp control chip 1021 and the second vehicle lamp control chip 1022 via the communication bus 1013.

[0088] Optionally, the first light source group 1031, the second light source group 1032, the third light source group 1033, and the fourth light source group 1034 are connected in series. The input end of the first light source group 1031 accesses the driving current output by the driving module 101 via the positive pole of the first constant current channel 1011. The output end of the second light source group 1032 is connected to the negative pole of the first constant current channel 1011, and a closed loop is formed between each light source group and the driving module 101.

[0089] Optionally, after receiving the vehicle lamp control signal sent by the vehicle controller, the driving module 101 outputs a driving current corresponding to the maximum current requirement in the vehicle lamp lighting logic indicated by the vehicle lamp control signal. At the same time, the driving module 101 outputs the vehicle lamp control signal to the first vehicle lamp control chip 1021 and the second vehicle lamp control chip 1022 via the communication bus 1013 respectively.

[0090] Optionally, the driving module 101 writes the vehicle lamp control signal to the communication chip on the PCB board where the vehicle lamp control chip is located via the communication bus 1013, and the vehicle lamp control chip actively reads the vehicle lamp control signal that conforms to the vehicle lamp control logic integrated therein from the communication chip.

[0091] The first vehicle lamp control chip 1021 is connected to the input end of at least one light emitting element in the first light source group 1031 via the control port.

[0092] The second vehicle lamp control chip 1022 is connected to the input end of at least one light emitting element in the second light source group 1032 via the control port.

[0093] Optionally, based on the received vehicle lamp control signal, the first vehicle lamp control chip 1021 controls the conduction of the switch corresponding to the vehicle lamp lighting logic indicated by the vehicle lamp control signal to trigger the opening of the corresponding control port, so that the light emitting element connected to the control port conducts, realizing the vehicle lamp signal interaction function or the lighting function; based on the received vehicle lamp control signal, the second vehicle lamp control chip 1022 controls the conduction of the switch corresponding to the vehicle lamp lighting logic indicated by the vehicle lamp control signal to trigger the opening of the corresponding control port, so that the light emitting element connected to the control port conducts, realizing the vehicle lamp signal interaction function or the lighting function.

[0094] Optionally, the first vehicle lamp control chip 1021 controls the first light source group 1031 based on each control port, and the second vehicle lamp control chip 1022 controls the second light source group 1032 based on each control port. When the first vehicle lamp control chip 1021 does not execute the vehicle lamp interaction function, it does not affect the second vehicle lamp control chip 1022 from executing the vehicle lamp interaction function.

[0095] As an optional implementation manner, refer to Figure 6 , a vehicle lamp system 10 provided by an embodiment of the present application includes: a first vehicle lamp control chip 1021 and a second vehicle lamp control chip 1022. The driving module 101 includes: a first constant current channel 1011. The light source group 103 includes: a first light source group 1031, a second light source group 1032, a third light source group 1033, and a fourth light source group 1034.

[0096] Optionally, the vehicle lamp system 10 is controlled by the first vehicle lamp control chip 1021 and the second vehicle lamp control chip 1022 for four light source groups. Among them, the first light source group 1031, the second light source group 1032, the third light source group 1033, and the fourth light source group 1034 respectively correspond to the signal interaction function and / or the lighting function of the vehicle lamp system under different working conditions. Each light source group can be formed by connecting light emitting elements with a single signal interaction function or lighting function in series, or can be formed by connecting light emitting elements with multiple signal interaction functions and / or lighting functions in series. The present application does not make specific limitations on this.

[0097] The driving module 101 is connected to the input end of the first light source group 1031 via the first constant current channel 1011. The driving module 101 is connected to the output end of the fourth light source group 1034 via the first constant current channel 1011. The output end of the first light source group 1031 is connected to the input end of the second light source group 1032. The output end of the second light source group 1032 is connected to the input end of the third light source group 1033. The output end of the third light source group 1033 is connected to the input end of the fourth light source group 1034. The driving module 101 is connected to the input ends of the first vehicle lamp control chip 1021 and the second vehicle lamp control chip 1022 via the communication bus 1013.

[0098] Optionally, the first light source group 1031, the second light source group 1032, the third light source group 1033, and the fourth light source group 1034 are connected in series. The input end of the first light source group 1031 accesses the driving current output by the driving module 101 via the positive electrode of the first constant current channel 1011. The output end of the fourth light source group 1034 is connected to the negative electrode of the first constant current channel 1011, and a closed loop is formed between each light source group and the driving module 101.

[0099] The first vehicle lamp control chip 1021 is connected to the input ends of at least one light-emitting element in the first light source group 1031 and the input ends of at least one light-emitting element in the second light source group 1032 via control ports.

[0100] The second vehicle lamp control chip 1022 is connected to the input ends of at least one light-emitting element in the third light source group 1033 and the input ends of at least one light-emitting element in the fourth light source group 1034 via control ports.

[0101] Optionally, the first vehicle lamp control chip 1021 controls the first light source group 1031 and the second light source group 1032 based on the received vehicle lamp control signal, and the second vehicle lamp control chip 1022 controls the third light source group 1033 and the fourth light source group 1034 based on the received vehicle lamp control signal. Among them, when the first vehicle lamp control chip 1021 does not execute the vehicle lamp interaction function, it does not affect the second vehicle lamp control chip 1022 from executing the vehicle lamp interaction function.

[0102] As an alternative implementation, refer to Figure 7 , a vehicle lamp system 10 provided by an embodiment of the present application includes: a first vehicle lamp control chip 1021, a driving module 101 includes: a first constant current channel 1011, and a light source group 103 includes: a first light source group 1031, a second light source group 1032, and a third light source group 1033.

[0103] Optionally, the vehicle lamp system 10 is controlled by only one control switch chip, the first vehicle lamp control chip 1021, for three light source groups. The first light source group 1031, the second light source group 1032, and the third light source group 1033 respectively correspond to the signal interaction function and / or lighting function of the vehicle lamp system under different working conditions. For example, the first light source group 1031 executes the left turn signal, and the second light source group 1032 executes the low beam, etc. The present application does not make specific limitations on this.

[0104] The driving module 101 is connected to the input end of the first light source group 1031 via the first constant current channel 1011, the driving module 101 is connected to the output end of the third light source group 1033 via the first constant current channel 1011, the output end of the first light source group 1031 is connected to the input end of the second light source group 1032, the output end of the second light source group 1032 is connected to the input end of the third light source group 1033, and the driving module 101 is connected to the input end of the first vehicle lamp control chip 1021 via the communication bus 1013.

[0105] Optionally, the first light source group 1031, the second light source group 1032, and the third light source group 1033 are connected in series. The input end of the first light source group 1031 accesses the driving current output by the driving module 101 via the positive electrode of the first constant current channel 1011. The output end of the third light source group 1033 is connected to the negative electrode of the first constant current channel 1011, and a closed loop is formed between each light source group and the driving module 101.

[0106] The first vehicle lamp control chip 1021 is connected to the input ends of at least one light-emitting element in the first light source group 1031 and the input ends of at least one light-emitting element in the second light source group 1032 via control ports. The first vehicle lamp control chip 1021 is also connected to the input ends of at least one light-emitting element in the third light source group 1033 via control ports.

[0107] Optionally, the first vehicle lamp control chip 1021 controls the first light source group 1031, the second light source group 1032, and the third light source group 1033 based on each control port. When the first light source group 1031 does not perform the vehicle lamp interaction function, it does not affect the vehicle lamp interaction functions of the second light source group 1032 and the third light source group 1033.

[0108] As an alternative implementation, referring to Figure 8 , a vehicle lamp system 10 provided by an embodiment of the present application further includes: a temperature sampling circuit 104 and a brightness sampling circuit 105.

[0109] The input end of the temperature sampling circuit 104 is connected to the driving module 101. The sampling end of the temperature sampling circuit 104 is communicatively connected to the vehicle lamp control chip 102. The output end of the temperature sampling circuit 104 is connected to the driving module 101. The temperature sampling circuit 104 is configured to sample the operating temperature value of the vehicle lamp control chip 102 in real time and feedback the sampled operating temperature value of the vehicle lamp control chip 102 to the driving module 101.

[0110] Optionally, the temperature sampling circuit 104 can be implemented by a temperature sensor. The input end of the temperature sampling circuit 104 is connected to the driving module 101. The driving module 101 is configured to supply power to the temperature sampling circuit 104. The temperature sampling circuit 104 is configured to collect the operating temperature value of the vehicle lamp control chip 102 in real time.

[0111] Optionally, the operating temperature value of the vehicle lamp control chip 102 is used to indicate the temperature generated when the vehicle lamp control chip 102 operates. The output end of the temperature sampling circuit 104 is connected to the driving module 101. The temperature sampling circuit 104 feeds back the sampled operating temperature value of the vehicle lamp control chip 102 to the driving module 101. The driving module 101 controls the operation of the vehicle lamp system according to the operating temperature value of the vehicle lamp control chip 102 fed back by the temperature sampling circuit 104.

[0112] Optionally, if the operating temperature value of the headlight control chip 102 exceeds the safe temperature threshold for the operation of the headlight control chip 102, the drive module 101 controls the headlight control chip 102 to stop operating; if the operating temperature value of the headlight control chip 102 is within the safe temperature threshold for the operation of the headlight control chip 102, the drive module 101 continues to control the headlight control chip 102 to operate according to the headlight control signal sent by the vehicle controller.

[0113] The input end of the brightness sampling circuit 105 is connected to the drive module 101, the sampling end of the brightness sampling circuit 105 is communicatively connected to each light source group 103, and the output end of the brightness sampling circuit 105 and the output end of the temperature sampling circuit 104 are both connected to the drive module 101. The brightness sampling circuit 105 is used to sample the working brightness of each light source group 103 in real time and feedback the sampled working brightness of each light source group 103 to the drive module 101.

[0114] Optionally, the brightness sampling circuit 105 can be implemented by electronic devices such as a photoresistor and a light sensor. The input end of the brightness sampling circuit 105 is connected to the drive module 101, and the drive module 101 is used to supply power to the brightness sampling circuit 105. The brightness sampling circuit 105 is used to sample the brightness of the light-emitting elements of the light source group 103 in real time. The output end of the brightness sampling circuit 105 is connected to the drive module 101, and the brightness sampling circuit 105 feeds back the sampled working brightness of each light source group 103 to the drive module 101.

[0115] Optionally, the working brightness of each light source group 103 is used to indicate the brightness value of each light-emitting element when each light source group 103 responds to the control signal of the headlight control chip 102. The drive module 101 feeds back the working brightness of each light source group 103 to the vehicle controller, and the vehicle controller determines whether each light source group 103 is operating normally according to the working brightness of each light source group 103.

[0116] Optionally, if the vehicle controller determines that each light source group 103 is operating normally, the drive module 101 continues to execute the headlight control signal sent by the vehicle controller; if the vehicle controller determines that each light source group 103 is operating abnormally, the vehicle controller sends a stop signal to the drive module 101, and the headlight system stops operating.

[0117] Figure 9 The structural schematic diagram of a vehicle provided by this application is shown in Figure 9 A vehicle 20 provided in an embodiment of this application includes the above headlight system 10. The working principle of the headlight system 10 in the vehicle 20 is the same as that in the above steps, and this application will not elaborate here.

[0118] The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

[0119] The above description is only the preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A vehicle lighting system, characterized in that: The vehicle lamp system comprises: a driving module, at least one light source group and at least one vehicle lamp control chip, each of the light source groups comprises at least one light emitting element, each light emitting element in each of the light source groups is connected in series, a communication bus and at least one constant current channel are arranged on the driving module, and a plurality of control ports are arranged on each of the vehicle lamp control chips; The driving module is connected to the vehicle light control chip via the communication bus, and the driving module is connected to each of the light source groups via each of the constant current channels; Each of the vehicle light control chips is connected to at least one light emitting element in each of the light source groups via a control port, and the driving module controls the output current of each control port of each of the vehicle light control chips via a communication bus.

2. The vehicle lighting system according to claim 1, characterized in that: The vehicle light system comprises: a first vehicle light control chip and a second vehicle light control chip, the driving module comprises: a first constant current channel and a second constant current channel, and the light source group comprises: a first light source group and a second light source group; The driving module is connected to the input end and the output end of the first light source group via the first constant current channel, the driving module is connected to the input end of the first headlight control chip via a communication bus, and the first headlight control chip is connected to the input end of at least one light-emitting element in the first light source group via a control port; The driving module is connected to the input end and the output end of the second light source group via the second constant current channel, the driving module is connected to the input end of the second headlight control chip via a communication bus, and the second headlight control chip is connected to the input end of at least one light-emitting element in the second light source group via a control port.

3. The vehicle light system according to claim 1, characterized in that: The vehicle lamp system comprises: a first vehicle lamp control chip, the driving module comprises: a first constant current channel and a second constant current channel, and the light source group comprises: a first light source group and a second light source group; The driving module is connected to the input end and the output end of the first light source group via the first constant current channel, the driving module is connected to the input end of the first headlight control chip via a communication bus, and the first headlight control chip is connected to the input end of at least one light-emitting element in the first light source group via a control port; The driving module is connected to the input end and the output end of the second light source group via the second constant current channel.

4. The vehicle light system according to claim 1, characterized in that: The driving module comprises: a first constant current channel, a plurality of light source groups, and at least some of the light source groups are connected in series.

5. The vehicle light system according to claim 4, characterized in that: The vehicle lamp system comprises: a first vehicle lamp control chip and a second vehicle lamp control chip, and the light source group comprises: a first light source group and a second light source group; The driving module is connected to the input end of the first light source group via the first constant current channel, the driving module is connected to the output end of the second light source group via the first constant current channel, the output end of the first light source group is connected to the input end of the second light source group, and the driving module is connected to the input end of the first headlight control chip and the input end of the second headlight control chip via a communication bus; The first vehicle light control chip is connected to an input end of at least one light emitting element in the first light source group via a control port; The second vehicle light control chip is connected to an input end of at least one light emitting element in the second light source group via a control port.

6. The vehicle light system according to claim 4, characterized in that: The vehicle light system comprises: a first vehicle light control chip and a second vehicle light control chip, the driving module comprises: a first constant current channel, and the light source group comprises: a first light source group, a second light source group, a third light source group and a fourth light source group; The driving module is connected to the input end of the first light source group via the first constant current channel, the driving module is connected to the output end of the fourth light source group via the first constant current channel, the output end of the first light source group is connected to the input end of the second light source group, the output end of the second light source group is connected to the input end of the third light source group, the output end of the third light source group is connected to the input end of the fourth light source group, and the driving module is connected to the input end of the first headlight control chip and the input end of the second headlight control chip via a communication bus; The first vehicle light control chip is connected to an input end of at least one light emitting element in the first light source group and an input end of at least one light emitting element in the second light source group via a control port; The second vehicle light control chip is connected to an input end of at least one light emitting element in the third light source group and an input end of at least one light emitting element in the fourth light source group via a control port.

7. The vehicle light system according to claim 4, characterized in that: The vehicle lamp system comprises: a first vehicle lamp control chip, the driving module comprises: a first constant current channel, and the light source group comprises: a first light source group, a second light source group and a third light source group; The driving module is connected to the input end of the first light source group via the first constant current channel, the driving module is connected to the output end of the third light source group via the first constant current channel, the output end of the first light source group is connected to the input end of the second light source group, the output end of the second light source group is connected to the input end of the third light source group, and the driving module is connected to the input end of the first headlight control chip via a communication bus; The first headlight control chip is connected to the input end of at least one light-emitting element in the first light source group and the input end of at least one light-emitting element in the second light source group via a control port, and the first headlight control chip is also connected to the input end of at least one light-emitting element in the third light source group via a control port.

8. The vehicle lighting system according to claim 1, characterized in that: The vehicle lamp system further comprises: a temperature sampling circuit; The input end of the temperature sampling loop is connected to the driving module, the sampling end of the temperature sampling loop is communicatively connected to the headlight control chip, the output end of the temperature sampling loop is connected to the driving module, and the temperature sampling loop is used to sample the operating temperature value of the headlight control chip in real time, and feed the sampled operating temperature value of the headlight control chip back to the driving module.

9. The vehicle light system according to claim 8, characterized in that: The vehicle light system further comprises: a brightness sampling circuit; The input end of the brightness sampling loop is connected to the driving module, the sampling end of the brightness sampling loop is communicatively connected to each of the light source groups, the output end of the brightness sampling loop and the output end of the temperature sampling loop are both connected to the driving module, and the brightness sampling loop is used to sample the working brightness of each of the light source groups in real time, and feed the sampled working brightness of each of the light source groups back to the driving module.

10. A vehicle, characterized in that: The vehicle comprises the vehicle lighting system according to any one of claims 1-9.

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