Multi-power system and vehicle

Abstract

The utility model relates to the field of automobiles, and discloses a multi-power-supply system and a vehicle. The multi-power-supply system comprises a main power supply, at least one standby power supply, at least one anti-reverse control module, a power supply detection module, a main output circuit and a plurality of single-function output circuits. Wherein the main power supply can directly supply power through the main output circuit or the single-function output circuit; the standby power supplies are in one-to-one correspondence with the anti-reverse control modules, the standby power supplies can be connected with the corresponding anti-reverse control modules and then connected with the output circuit, and when the power supply detection module detects that the main power supply breaks down and the standby power supplies are turned on, the power supply detection module can control the corresponding anti-reverse control modules to be turned on. Power is supplied by the backup power supply via the main output circuit or the single-function output circuit. Based on the scheme, a plurality of power supplies can independently supply power, so that the requirements of multiple paths of complex power supplies are met.

Description

Technical Field

[0001] The present application relates to the automotive field, and in particular to a multi-power supply system and a vehicle. Background Art

[0002] In modern cars, with the improvement of vehicle functions and intelligence levels, the body domain controller usually manages and schedules the functions of each body control unit. Among them, the body control unit refers to the functional module responsible for controlling and managing body-related functions, such as the airbag control unit, reversing radar control unit, etc.

[0003] At present, in order to ensure the normal operation of the body domain controller, it is necessary to provide a stable and reliable power supply for the body domain controller. At the same time, in order to avoid the interruption of the body domain controller due to a single power supply problem, it is also necessary to configure at least one backup power supply in the vehicle to improve the safety of vehicle driving. Utility Model Content

[0004] The present application provides a multi-power supply system and a vehicle, which can realize separate power supply from multiple power supplies to meet complex power supply requirements.

[0005] In a first aspect, the present application provides a multi-power supply system, comprising: a main power supply, at least one backup power supply, at least one anti-reverse control module, a power supply detection module, a main output circuit, and multiple single-function output circuits; wherein the main power supply is respectively connected to the main output circuit and each of the multiple single-function output circuits, wherein the main power supply is used to supply power through the main output circuit and each of the multiple single-function output circuits; each backup power supply corresponds to each anti-reverse control module one by one, wherein each backup power supply is respectively connected to the corresponding anti-reverse control module; each backup power supply is respectively connected to the main output circuit and each of the multiple single-function output circuits through the corresponding anti-reverse control module, wherein each backup power supply is used to supply power through the main output circuit and each of the multiple single-function output circuits when the corresponding anti-reverse control module is turned on; the power supply detection module is respectively connected to the main power supply and each backup power supply, and the power supply detection module is used to detect the currently available power in the main power supply and the backup power supply, and control the anti-reverse control module corresponding to each backup power supply to be turned on or off.

[0006] In the present application, the main power supply may be the main power supply G1 mentioned later; the multi-power supply system mentioned in the present application may include at least one backup power supply, for example, the backup power supply may be the backup power supply G2 and the backup power supply G3 mentioned later; in addition, the multi-power supply system mentioned in the present application may include at least one anti-reverse control module, for example, the anti-reverse control module may be the anti-reverse control module 1001 and the anti-reverse control module 1003 mentioned later; the power supply detection module may be the power supply detection module P1 mentioned later; the main output circuit may be the output circuit output1 mentioned later; the single-function output circuit may be the output circuit output2 mentioned later.

[0007] It can be understood that in the embodiment of the present application, the anti-reverse control module and the backup power supply are connected one-to-one.

[0008] It can be understood that in the present application, the main power supply can be directly powered by the output circuit; the backup power supply can be connected to the anti-reverse control module and then connected to the output circuit. When the power supply detection module detects that the main power supply fails and the backup power supply is turned on, the power supply detection module can control the anti-reverse control module to be turned on, so that the backup power supply is powered through the output circuit.

[0009] In a possible implementation, each anti-reverse control module in the above-mentioned at least one anti-reverse control module includes a first transistor, a second transistor, a third transistor, a fourth transistor and a first enable control pin; wherein, the source pin of the first transistor is connected to the source pin of the second transistor; the drain pin of the first transistor is connected to each backup power supply corresponding to each anti-reverse control module; the drain pin of the second transistor is respectively connected to the main output circuit and each single-function output circuit in a plurality of single-function output circuits; the collector pin of the third transistor is respectively connected to the gate pin of the first transistor and the gate pin of the second transistor; the base pin of the third transistor is connected to the collector pin of the fourth transistor; the base pin of the fourth transistor is connected to the first enable control pin; and the emitter pin of the fourth transistor is grounded.

[0010] In the present application, the first transistor may be an N-type metal-oxide-semiconductor (N-MOS) transistor, for example, an N-MOS transistor T101 or an N-MOS transistor T108 mentioned later; the second transistor may be an N-MOS transistor, for example, an N-MOS transistor T102 or an N-MOS transistor T109 mentioned later; the third transistor may be a PNP transistor, for example, a PNP transistor T103 or a PNP transistor T1010 mentioned later; the fourth transistor may be an NPN transistor, for example, an NPN transistor T104 or an NPN transistor T1011 mentioned later. The first enable control pin may be an enable control pin EN2 or an enable control pin EN3 mentioned in the present application.

[0011] It can be understood that in the present application, the switching states of the first transistor and the second transistor can be controlled by the third transistor and the fourth transistor.

[0012] In a possible implementation, each of the above-mentioned anti-reverse control modules also includes a fifth transistor and a first diode; wherein the collector pin of the fifth transistor is connected to the gate pin of the first transistor; the emitter pin of the fifth transistor is connected to the anode of the first diode; the base pin of the fifth transistor is grounded; and the cathode of the first diode is connected to the source pin of the first transistor.

[0013] In the present application, the fifth transistor may be an NPN transistor, for example, the NPN transistor T1021 mentioned later; the first diode may be the diode A7 mentioned later.

[0014] It can be understood that in the present application, by connecting the fifth transistor and the first diode, it can be used to prevent reverse connection to protect the backup power supply corresponding to the anti-reverse control module.

[0015] In one possible implementation, the above system includes a sixth transistor, a seventh transistor and an eighth transistor; wherein the source pin of the sixth transistor is connected to the main power supply; the drain pin of the sixth transistor is respectively connected to the main output circuit and each of the multiple single-function output circuits; the gate pin of the sixth transistor is connected to the collector pin of the seventh transistor; the base pin of the seventh transistor is connected to the collector pin of the eighth transistor; the base pin of the eighth transistor is connected to the second enable control pin; and the emitter pin of the eighth transistor is grounded.

[0016] In the present application, the sixth transistor can be an N-MOS transistor, for example, it can be the N-MOS transistor T105 mentioned later; the seventh transistor can be a PNP transistor, for example, it can be the PNP transistor T106 mentioned later; the eighth transistor can be an NPN transistor, for example, it can be the NPN transistor T107 mentioned later; the second enable control pin can be the enable control pin EN1 mentioned in the present application.

[0017] It can be understood that in the present application, the switching state of the sixth transistor can be controlled by the seventh transistor and the eighth transistor.

[0018] In a possible implementation, the power supply detection module includes a ninth transistor and a resistor module; wherein the base pin of the ninth transistor is connected to the third enable control pin; the collector pin of the ninth transistor is connected to the first end of the resistor module; and the second end of the resistor module is grounded.

[0019] In the present application, the ninth transistor may be a PNP transistor, for example, the PNP transistor T1012 mentioned later; the third enable control pin may be the enable control pin EN4 mentioned in the present application.

[0020] In a possible implementation, each of the above-mentioned multiple single-function output circuits includes a function control module, which is used to supply power through the corresponding single-function output circuit when the function control module is turned on; and the function control module includes a tenth transistor, an eleventh transistor, a twelfth transistor and a fourth enable control pin; wherein the source pin of the tenth transistor is connected to the power receiving device; the drain pin of the tenth transistor is respectively connected to the main power supply and each backup power supply; the gate pin of the tenth transistor is connected to the collector pin of the eleventh transistor; the base pin of the eleventh transistor is connected to the collector pin of the twelfth transistor; the base pin of the twelfth transistor is connected to the fourth enable control pin; and the emitter pin of the twelfth transistor is grounded.

[0021] In the present application, the function control module may be the function control module 1002 mentioned later; the tenth transistor may be an N-MOS transistor, for example, the N-MOS transistor T1015 mentioned later; the eleventh transistor may be a PNP transistor, for example, the PNP transistor T1016 mentioned later; the twelfth transistor may be an NPN transistor, for example, the NPN transistor T1017 mentioned later; the fourth enable control pin may be the enable control pin EN6 mentioned in the present application.

[0022] It can be understood that in the present application, when the functional control module is turned on, some core functional components in the vehicle can be powered separately to improve the safety of vehicle driving.

[0023] In a possible implementation, the above-mentioned function control module also includes a thirteenth transistor and a fourteenth transistor; the thirteenth transistor and the fourteenth transistor are used to control the tenth transistor when the fourth enable control pin fails; wherein, the collector pin of the thirteenth transistor is connected to the base pin of the twelfth transistor; the emitter pin of the thirteenth transistor is grounded; and the base pin of the thirteenth transistor is connected to the collector pin of the fourteenth transistor.

[0024] In the present application, the thirteenth transistor may be an NPN transistor, for example, the NPN transistor T1018 mentioned later; the fourteenth transistor may be a PNP transistor, for example, the PNP transistor T1019 mentioned later.

[0025] In a possible implementation, the above system also includes a power supply collection module, a power supply module, a power supply detection module and a controller; wherein one end of the power supply collection module is respectively connected to the main power supply and each backup power supply, and the other end of the power supply collection module is connected to the controller for supplying power to the controller; the power supply module is connected to the power supply collection module for supplying power to external devices; and the power supply detection module is connected to the power supply module for monitoring the power supply of the power supply module.

[0026] In one possible implementation, the above system includes multiple diodes; wherein the multiple diodes correspond one-to-one to the main power supply and each backup power supply, and the positive electrode of each diode in the multiple diodes is respectively connected to the corresponding main power supply and each backup power supply; the negative electrode of each diode in the multiple diodes is connected to the power supply collection module.

[0027] In a second aspect, the present application provides a vehicle, wherein the vehicle includes the multi-power supply system mentioned in the present application.

[0028] The beneficial effects of this application are:

[0029] In the embodiment of the present application, by adding an anti-reverse control module, it is possible to control the power supply to each functional module in the vehicle through a backup power supply to meet complex power supply requirements and power supply expansion; at the same time, by adding a functional control module, some core functional components in the vehicle can be powered separately, thereby improving the safety of vehicle driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of a circuit framework structure of a multi-power supply system is shown;

[0031] Figure 2 A schematic diagram of a specific circuit structure of a multi-power supply system is shown;

[0032] Figure 3 A schematic diagram of a specific circuit structure of an anti-reverse control module in a multi-power supply system is shown;

[0033] Figure 4 A schematic diagram of a specific circuit structure of a function control module in a multi-power supply system is shown.

[0034] Description of reference numerals:

[0035] N1: source pin of N-MOS transistor; N2: drain pin of N-MOS transistor; N3: gate pin of N-MOS transistor;

[0036] S1: base pin of PNP transistor; S2: collector pin of PNP transistor; S3: emitter pin of PNP transistor;

[0037] S4: base pin of NPN transistor; S5: collector pin of NPN transistor; S6: emitter pin of NPN transistor. DETAILED DESCRIPTION

[0038] Illustrative embodiments of the present application include, but are not limited to, a multi-power system and a vehicle.

[0039] It can be understood that in order to ensure the safety of vehicle driving, it is usually necessary to install a main power supply and at least one backup power supply in the vehicle. When one of the power supplies fails, the other power supplies can supply power to the body domain controller or functional elements, so that the body domain controller or functional elements can work normally and ensure safe driving of the vehicle.

[0040] In order to solve the problem of a large number of power supplies and complex control in a vehicle, the present application provides a multi-power supply system and a vehicle. In the multi-power supply system, there is a main power supply, at least one backup power supply, and a power supply detection module for detecting the power supply currently working. Among them, the main power supply can be powered directly through the output circuit; the backup power supply can be connected to the anti-reverse control module and then connected to the output circuit. When the power supply detection module detects that the main power supply fails and the backup power supply is turned on, the power supply detection module can control the anti-reverse control module to be turned on, so that the backup power supply is powered through the output circuit. In this way, multiple power supplies can be supported to supply power separately to meet power requirements.

[0041] In addition, the output circuit of the multi-power system may include a main output circuit and a single-function output circuit. The main output circuit means that the power supply is directly supplied to the body domain controller through the power supply; the single-function output circuit means that some core body control units in the vehicle can be powered separately through the power supply. The single-function output circuit has a function control module. When it is necessary to supply power to one of the body control units separately, the function control module can be controlled to be turned on so that the current flows to a single body control unit. In this way, the core functional components in the vehicle can be powered separately, improving the safety of vehicle driving.

[0042] Specifically, Figure 1 As shown, in Figure 1 The main power supply G1, the backup power supply G2, the power supply detection module P1, the main output circuit output1 and the single-function output circuit output2 are included. The main power supply G1 can directly supply power to the vehicle domain controller and the single vehicle control unit through the output circuit output1 or the output circuit output2; when the power supply detection module P1 detects that the main power supply G1 fails and the backup power supply G2 is turned on, the power supply detection module P1 can control the anti-reverse control module 1001 to be turned on, so that the backup power supply G2 is used to supply power to the vehicle domain controller and the single vehicle control unit via the output circuit output1 or the output circuit output2.

[0043] In addition, Figure 1 In the single-function output circuit output2, there is also a function control module 1002. When power needs to be supplied to a certain vehicle body control unit separately, the function control module 1002 can be controlled to be turned on so that current flows to the single vehicle body control unit. In this way, the core functional components in the vehicle can be supplied with power separately, thereby improving the safety of vehicle driving.

[0044] It should be understood that in the multi-power system, there may be multiple backup power supplies and multiple anti-reverse control modules, wherein the connection mode of the backup power supply is the same as that of the Figure 1 The connection method of the backup power supply G2 is similar, and this application does not limit this.

[0045] It should also be understood that in the multi-power supply system, there may be multiple single-function output circuits for supplying power to other functional modules separately, wherein each single-function output circuit has a functional control module. Figure 1 The circuit structure of the output circuit output2 is similar, and this application does not limit this.

[0046] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0047] First, the reference numerals mentioned in this application are explained:

[0048] N1: source pin of an N-type metal-oxide-semiconductor (N-MOS) transistor; N2: drain pin of an N-MOS transistor; N3: gate pin of an N-MOS transistor.

[0049] S1: base pin of PNP transistor; S2: collector pin of PNP transistor; S3: emitter pin of PNP transistor.

[0050] S4: base pin of NPN transistor; S5: collector pin of NPN transistor; S6: emitter pin of NPN transistor.

[0051] Reference Figure 2 , Figure 2 A circuit structure diagram of a multi-power supply system with three power supplies provided in an embodiment of the present application, including a power supply detection module P1, a main power supply G1, a backup power supply G2 and a backup power supply G3, and also including a main output circuit output1 and a single-function output circuit output2.

[0052] like Figure 2 As shown, the main power supply G1 is connected to the N-MOS transistor T105 (i.e., the sixth transistor mentioned above) and directly supplies power to the body domain controller or a single body control unit in the vehicle via the output circuit. Specifically, the main power supply G1 is connected to the pin N1 of the N-MOS transistor T105, and the pin N2 of the N-MOS transistor T105 can be directly connected to the output circuit output1 and the output circuit output2. For example, the pin N2 of the N-MOS transistor T105 can be directly connected to the body domain controller, indicating that when the N-MOS transistor T105 is turned on, the body domain controller can be powered by the main power supply G1.

[0053] In addition, the N-MOS transistor T105 also needs to be switched by two transistors. Specifically, the pin N3 of the N-MOS transistor T105 is also connected to the pin S2 of the PNP transistor T106 (i.e., the seventh transistor mentioned above), the pin S3 of the PNP transistor T106 is connected to the controller (i.e., the single board computer (SBC)) 1004, the pin S1 of the PNP transistor T106 is connected to the pin S5 of the NPN transistor T107 (i.e., the eighth transistor mentioned above), the pin S4 of the NPN transistor T107 is connected to the enable control pin EN1, and the pin S6 is grounded.

[0054] Through the above circuit connection, when the microcontroller unit (MCU) controls the enable control pin EN1 to input a high level to the NPN transistor T107, the current can flow to the PNP transistor T106, and then flow to the pin N3 of the N-MOS transistor T105, turning on the N-MOS transistor T105; when the NPN transistor T107 is at a low level or in an off state, the N-MOS transistor T105 will be in an off state. Among them, when the N-MOS transistor T105 is turned off, the current can only flow from the pin N1 to the pin N2. Therefore, if the power supply detection module P1 detects that the main power supply G1 fails and the backup power supply G2 is turned on, the NPN transistor T105 can be controlled to be turned off through the NPN transistor T107 to prevent the current from flowing from the pin N2 to the pin N1 and flowing back to the main power supply G1, thereby protecting the circuit from reverse flow.

[0055] For example, Figure 2 As shown, the backup power supply G2 needs to be connected to the anti-reverse control module 1001, and then supply power to the body domain controller or a single body control unit in the vehicle through the output circuit. Among them, the anti-reverse control module 1001 includes an N-MOS transistor T101 (i.e. the first transistor mentioned above), an N-MOS transistor T102 (i.e. the second transistor mentioned above), a PNP transistor T103 (i.e. the third transistor mentioned above) and an NPN transistor T104 (i.e. the fourth transistor mentioned above). Among them, when the N-MOS transistor is turned off, the current can only pass in one direction; when the N-MOS transistor is turned on, the current can pass in both directions.

[0056] exist Figure 2 In the embodiment, the N-MOS transistor T101 and the N-MOS transistor T102 are connected in opposite directions. Specifically, the backup power supply G2 is connected to the pin N2 of the N-MOS transistor T101, the pin N1 of the N-MOS transistor T101 is connected to the pin N1 of the N-MOS transistor T102, and the pin N2 of the N-MOS transistor T102 is connected to the output circuit output1 and the output circuit output2.

[0057] It should be understood that when the backup power supply G2 is not needed, both the N-MOS transistor T101 and the N-MOS transistor T102 are turned off, so that the N-MOS transistor T101 can only pass the current in the left direction, and the N-MOS transistor T102 can only pass the current in the right direction, resulting in the current being unable to flow from the backup power supply G2 to the output circuit. In addition, when the backup power supply G2 is needed, both the N-MOS transistor T101 and the N-MOS transistor T102 are turned on, and the current can pass through both the N-MOS transistor T101 and the N-MOS transistor T102 in both directions, so that the current can flow from the backup power supply G2 to the output circuit. In this way, the backup power supply G2 can be used to power the body domain controller or the body control unit via the output circuit output1 or the output circuit output2.

[0058] In addition, in the anti-reverse control module 1001, the N-MOS transistor T101 and the N-MOS transistor T102 are switched by two transistors. Specifically, the pin S2 of the PNP transistor T103 is connected to the pin N3 of the N-MOS transistor T101 and the pin N3 of the N-MOS transistor T102, respectively, the pin S3 of the PNP transistor T103 is connected to the controller SBC1004, the pin S1 of the PNP transistor T103 is connected to the pin S5 of the NPN transistor T104, the pin S4 of the NPN transistor T104 is connected to the enable control pin EN2, and the pin S6 is grounded.

[0059] Through the above circuit structure, if the power supply detection module P1 detects that the main power supply G1 fails and the backup power supply G2 is turned on, the MCU can control the enable control pin EN2 to input a high level to the NPN transistor T104, so that the current can flow to the PNP transistor T103, and then flow to the pin N3 of the N-MOS transistor T101 and the pin N3 of the N-MOS transistor T102 respectively, so that the N-MOS transistor T101 and the N-MOS transistor T102 are turned on. In this way, the switch control of the N-MOS transistor T101 and the N-MOS transistor T102 can be realized by controlling the NPN transistor T104, and the backup power supply G2 can be used to supply power to the body domain controller or the body control unit through the output circuit output1 or the output circuit output2, so as to meet the complex power supply requirements.

[0060] For example, Figure 2 As shown, the backup power supply G3 needs to be connected to the anti-reverse control module 1003, and then connected to the output circuit output1 and the output circuit output2. The anti-reverse control module 1003 includes an N-MOS transistor T108, an N-MOS transistor T109, a PNP transistor T1010, and an NPN transistor T1011.

[0061] Among them, the backup power supply G3 is connected to the N-MOS transistor T108, and the N-MOS transistor T109 is connected to the N-MOS transistor T108 in the opposite direction and then connected to the output circuit. In addition, the PNP transistor T1010 is connected to the N-MOS transistor T108 and the N-MOS transistor T109 respectively, and the PNP transistor T1010 also needs to be connected to the controller SBC1004, and the NPN transistor T1011 is connected to the PNP transistor T1010.

[0062] If the power supply detection module P1 detects that the main power supply G1 fails and the backup power supply G3 is turned on, the MCU can control the enable control pin EN3 to input a high level to the NPN transistor T1011, thereby turning on the N-MOS transistor T108 and the N-MOS transistor T-109, and realizing the backup power supply G3 through the output circuit output1 or the output circuit output2 to supply power to the body domain controller or the body control unit, thereby meeting complex power supply requirements.

[0063] It should be understood that the circuit structure of the backup power supply G3 is similar to the circuit structure of the backup power supply G2 described above, and will not be described in detail in the embodiment of the present application.

[0064] It should be understood that the multi-power supply system mentioned in the present application may also include other more backup power supplies, wherein the circuit structure of the backup power supply is similar to the circuit structure of the above-mentioned backup power supply G2, and the embodiments of the present application do not limit this.

[0065] In addition, Figure 2 The output circuit output2 is also monitored through the detection circuit SW1 to confirm whether there is actually electrical output. The detection circuit SW1 can be connected to the diode A4 and then connected to the power supply assembly module U1.

[0066] In addition, Figure 2The multi-power supply system shown also includes a power supply detection module P1 connected to the main power supply G1, the backup power supply G2 and the backup power supply G3, respectively, for detecting and controlling the power supply currently in use. For example, when it is detected that the main power supply G1 fails and the backup power supply G2 is turned on, the enable control pin EN2 can be controlled to input a high level to the NPN transistor T104, thereby turning on the N-MOS transistor T101 and the N-MOS transistor T102, so as to realize the backup power supply G2 through the output circuit output1 or the output circuit output2 to supply power to the body domain controller or the body control unit; at the same time, when the backup power supply G2 is used for power supply, the power supply detection module P1 also needs to control the enable control pin EN1 to input a low level to the NPN transistor T107, thereby turning off the N-MOS transistor T105, to prevent the current from flowing back to the main power supply G1, and to achieve the function of the anti-reverse protection circuit.

[0067] like Figure 2 As shown, there is a PNP transistor T1012 (i.e., the ninth transistor mentioned above) in the power supply detection module P1, wherein the MCU controls the enable control pin EN4 (i.e., the third enable control pin mentioned above) to input a high level to the pin S1 of the PNP transistor T1012, so that the power supply detection module can work normally. In addition, the pin S2 of the PNP transistor T1012 is connected to the resistor R1, and the resistor R1 is connected to the resistor R2 and then grounded.

[0068] In the multi-power supply system mentioned in the present application, it is also necessary to supply power to the controller SBC1004 so that the controller SBC1004 can work normally. Specifically, the power supply assembly module U1 can be connected to the controller SBC1004 and input normal power to the controller SBC1004. Among them, the main power supply G1 can be connected to the diode A1 and then connected to the power supply assembly module U1; the backup power supply G2 can be connected to the diode A2 and then connected to the power supply assembly module U1; the backup power supply G3 can be connected to the diode A3 and then connected to the power supply assembly module U1. Among them, each power supply is connected to the positive pole of the corresponding diode, and the negative pole of the diode is connected to the power supply assembly module U1, which can be used for anti-reverse connection protection circuit. In addition, when any power supply is working normally, the power supply assembly module U1 can output normal power to supply power to the controller SBC1004, so that the controller SBC1004 works.

[0069] In addition, Figure 2 In the multi-power system shown, power can also be supplied to some external devices of the vehicle. Specifically, the power supply module U2 is connected to the PNP transistor T1030 and then to the power supply assembly module U1, so that the power supply module U2 can supply power to some external devices; the power supply detection module U3 is connected to the power supply module U2 and can be used to monitor the power input to the external device.

[0070] exist Figure 2 In the example, the PNP transistor T1013 and the NPN transistor T1014 can be connected to detect the power supply to the controller SBC1004. The specific circuit structure is as follows: the power supply assembly module U1 is also connected to the pin S3 of the PNP transistor T1013, the pin S2 of the PNP transistor T1013 is connected to the diode A5 and then connected to the controller SBC1004, the pin S1 of the PNP transistor T1013 is connected to the pin S5 of the NPN transistor T1014, the pin S6 of the NPN transistor T1014 is grounded, and the pin S4 of the NPN transistor T1014 is connected to the enable control pin EN5. Among them, the PNP transistor T1013 and the NPN transistor T1014 can be connected to detect the power supply to the controller SBC1004.

[0071] like Figure 2 As shown, each power supply (main power supply G1, backup power supply G2, backup power supply G3) can directly supply power to the body domain controller through the output circuit output1.

[0072] like Figure 2 As shown, the multi-power supply system also includes a single-function output circuit output2, and the power supply can supply power to some core body control units in the vehicle separately through the single-function output circuit output2. Among them, the output circuit output2 has a function control module 1002. Among them, the function control module 1002 includes an N-MOS transistor T1015 (i.e. the tenth transistor mentioned above), a PNP transistor T1016 (i.e. the eleventh transistor mentioned above), an NPN transistor T1017 (i.e. the twelfth transistor mentioned above), an NPN transistor T1018 (i.e. the thirteenth transistor mentioned above) and a PNP transistor T1019 (i.e. the fourteenth transistor mentioned above).

[0073] In the function control module 1002, when the N-MOS transistor T1015 is turned on, power can be supplied to the vehicle body control unit separately through each power supply via the output circuit output2. Specifically, the pin N1 of the N-MOS transistor T1015 can be connected to each vehicle body control unit, and the pin N2 of the N-MOS transistor T1015 can be connected to the pin N2 of the N-MOS transistor T102, the pin N2 of the N-MOS transistor T105, and the pin N2 of the N-MOS transistor T109, respectively, indicating that when the N-MOS transistor T1015 is turned on, current can pass from the power supply through the N-MOS transistor T1015, and power can be supplied to the vehicle body function module.

[0074] exist Figure 2The function control module 1002 shown also includes a PNP transistor T1016 and an NPN transistor T1017 , and the switch of the N-MOS transistor T1015 is controlled by the PNP transistor T1016 and the NPN transistor T1017 . The specific connection method of the circuit is as follows: the pin N3 of the N-MOS transistor T1015 is connected to the pin S2 of the PNP transistor T1016, the pin S3 of the PNP transistor T1016 is connected to the controller SBC1004, the pin S1 of the PNP transistor T1016 is connected to the resistor R3 and then connected to the controller SBC, the pin S1 of the PNP transistor T1016 can also be connected to the pin S5 of the NPN transistor T1017, the resistor R4 is connected between the pin S4 of the NPN transistor T1017 and the pin S6 of the NPN transistor T1017, the pin S6 of the NPN transistor T1017 is grounded, the pin S4 of the NPN transistor T1017 is connected to the resistor R5, one end of the resistor R5 is connected to the enable control pin EN6 (that is, the fourth enable control pin mentioned above), and the other end of the resistor R5 is connected to the resistor R4.

[0075] In addition, in the function control module 1002, if the enable control pin EN6 is damaged, the N-MOS transistor T1015 can be forcibly turned off through the NPN transistor T1018. The specific connection method of the circuit is as follows: the pin S4 of the NPN transistor T1017 is connected to the pin S5 of the NPN transistor T1018 through the resistor R5, the pin S6 of the NPN transistor T1018 is grounded, the pin S4 of the NPN transistor T1018 is connected to the resistor R6 and then grounded, and at the same time, the pin S4 of the NPN transistor T1018 is connected to the pin S2 of the PNP transistor T1019, the pin S1 of the PNP transistor T1019 is connected to the controller SBC1004, and the pin S3 of the PNP transistor T1019 is reversely connected to the diode A6.

[0076] In the function control module 1002, by enabling the control pin EN6 and the controller SBC, the N-MOS transistor T1015 can be controlled to open, and the current can pass through the N-MOS transistor T1015 from the power supply to supply power to the single function module of the vehicle.

[0077] It should be understood that the multi-power supply system can also include multiple single-function output circuits, wherein the circuit structure of the function control module in each single-function output circuit is similar to the circuit structure of the function control module 1002 in the above-mentioned single-function output circuit output2, and the embodiments of the present application are not limited to this.

[0078] In this way, based on the circuit structure of the above-mentioned multi-power supply system, multiple power supplies can be supplied separately to meet power supply requirements; at the same time, the core functional components in the vehicle can also be powered separately to improve the safety of vehicle driving; in addition, the multi-power supply system can also expand one or more backup power supplies to meet power expansion needs.

[0079] Reference Figure 3 , taking the anti-reverse control module 1001 as an example, the specific circuit structure of the anti-reverse control module mentioned in the embodiment of the present application is introduced. Among them, the anti-reverse control module 1001 includes an N-MOS transistor T101, an N-MOS transistor T102, a PNP transistor T103, an NPN transistor T104 and an NPN transistor T1021 (i.e., the fifth transistor mentioned above).

[0080] exist Figure 3 In the embodiment, the N-MOS transistor T101 and the N-MOS transistor T102 are connected in opposite directions. Specifically, the backup power supply G2 is connected to the pin N2 of the N-MOS transistor T101, the pin N1 of the N-MOS transistor T101 is connected to the pin N1 of the N-MOS transistor T102, and the pin N2 of the N-MOS transistor T102 is connected to the output circuit.

[0081] It should be understood that when the backup power supply G2 is not needed, both the N-MOS transistor T101 and the N-MOS transistor T102 are turned off, so that the N-MOS transistor T101 can only pass the current in the left direction, and the N-MOS transistor T102 can only pass the current in the right direction, resulting in the current being unable to flow from the backup power supply G2 to the output circuit. In addition, when the backup power supply G2 is needed, both the N-MOS transistor T101 and the N-MOS transistor T102 are turned on, and the current can pass through both the N-MOS transistor T101 and the N-MOS transistor T102 in both directions, so that the current can flow from the backup power supply G2 to the output circuit, so that the backup power supply G2 can be used to power the body domain controller or the body control unit.

[0082] In addition, in the anti-reverse control module 1001, the N-MOS transistor T101 and the N-MOS transistor T102 are switched by two transistors. Specifically, the pin S2 of the PNP transistor T103 is connected to the pin N3 of the N-MOS transistor T101 and the pin N3 of the N-MOS transistor T102, respectively, the pin S3 of the PNP transistor T103 is connected to the controller SBC1004, the pin S1 of the PNP transistor T103 is connected to the resistor R7 and then to the pin S5 of the NPN transistor T104, the pin S4 of the NPN transistor T104 is connected to the resistor R8 and then to the enable control pin EN2, and the pin S6 is connected to the resistor R9 and then to the ground.

[0083] In addition, some circuit elements can be added to the multi-power supply system for testing. For example, a resistor R100 can be connected between the pin S1 of the PNP transistor T103 and the pin S3 of the PNP transistor T103 as a test point to debug and test the circuit. A resistor R101 can also be connected to the pin S4 of the NPN transistor T104 as a test point to debug and test the circuit.

[0084] It should be understood that if the power supply detection module P1 detects that the main power supply G1 fails and the backup power supply G2 is turned on, the MCU can control the enable control pin EN2 to input a high level to the NPN transistor T104, so that the current can flow to the PNP transistor T103, and then flow to the pin N3 of the N-MOS transistor T101 and the pin N3 of the N-MOS transistor T102, respectively, so that the N-MOS transistor T101 and the N-MOS transistor T102 are turned on. In this way, the switch control of the N-MOS transistor T101 and the N-MOS transistor T102 can be realized by controlling the NPN transistor T104, and the backup power supply G2 can be used to supply power to various functional modules in the vehicle, meeting complex power supply requirements.

[0085] In addition, the anti-reverse control module 1001 also includes an NPN transistor T1021 and a diode A7 (i.e., the first diode mentioned above) for an anti-reverse connection circuit. Among them, the pin S5 of the NPN transistor T1021 is connected to the pin N3 of the N-MOS transistor T101, the pin S4 of the NPN transistor T1021 is connected to the resistor R10 and then grounded, the pin S6 of the NPN transistor T1021 is connected to the positive electrode of the diode A7, and the negative electrode of the diode A7 is connected to the pin N1 of the N-MOS transistor T101. The NPN transistor T1021 and the diode A7 can be used to prevent the backup power supply G2 from being reversely connected to the ground and protect the circuit.

[0086] A resistor R11 , a parallel capacitor C1 , and a parallel diode A8 may be connected in parallel between the pin N1 of the N-MOS transistor T101 and the pin N3 of the N-MOS transistor T101 .

[0087] In this way, the backup power supply G2 can be used to supply power to each functional module in the vehicle by connecting the backup power supply G2 to the anti-reverse control module 1001. At the same time, in a multi-power system, one or more backup power supplies can be included, and each backup power supply can be connected to the anti-reverse control module to achieve the expansion demand of the power supply.

[0088] Reference Figure 4 , taking the above-mentioned function control module 1002 as an example, the specific circuit structure of the function control module mentioned in the embodiment of the present application is introduced.

[0089] exist Figure 4 In the embodiment, the function control module 1002 includes an N-MOS transistor T1015, a PNP transistor T1016, an NPN transistor T1017 and an NPN transistor T1018. When the N-MOS transistor T1015 is turned on, current can flow from the power supply through the N-MOS transistor T1015 to supply power to the function modules of the vehicle separately.

[0090] Specifically, the circuit connection method is as follows: the pin N1 of the N-MOS transistor T1015 can be connected to each vehicle body control unit, and the pin N2 of the N-MOS transistor T1015 can be connected to the input circuit. In addition, a capacitor C2 can be connected in parallel between the input circuit and the N-MOS transistor T1015 and grounded. A resistor R12 can be connected between the pin N1 of the N-MOS transistor T1015 and the pin N2 of the N-MOS transistor T1015, a diode A9 can be connected between the pin N1 of the N-MOS transistor T1015 and the pin N3 of the N-MOS transistor T1015, a resistor R13 can be connected between the pin N1 of the N-MOS transistor T1015 and the pin N3 of the N-MOS transistor T1015, and a capacitor C3, a capacitor C4, and a bidirectional transient suppression diode D1 can be connected between the pin N1 of the N-MOS transistor T1015 and the output circuit and grounded respectively.

[0091] In addition, the function control module 1002 also includes a PNP transistor T1016 and an NPN transistor T1017, and the switch of the N-MOS transistor T1015 is controlled by the PNP transistor T1016 and the NPN transistor T1017. The specific connection mode of the circuit is as follows: the pin N3 of the N-MOS transistor T1015 is connected to the pin S2 of the PNP transistor T1016, the pin S3 of the PNP transistor T1016 is connected to the controller SBC1004, the pin S1 of the PNP transistor T1016 is connected to the resistor R14 and then to the pin S5 of the NPN transistor T1017, the pin S6 of the NPN transistor T1017 is connected to the resistor R15 and then to the ground, the pin S4 of the NPN transistor T1017 is connected to the resistor R16 and then to the enable control pin EN6, and the pin S4 of the NPN transistor T1017 is also connected to the resistor R17 and then to the ground.

[0092] In addition, the circuit can be debugged and tested by connecting a resistor R18 between the pin S1 of the PNP transistor T1016 and the pin S3 of the PNP transistor T1016 as a test point.

[0093] In the function control module 1002, by enabling the control pin EN6, the N-MOS transistor T1015 can be controlled to open, and the current can pass through the N-MOS transistor T1015 from the power supply to supply power to the function module of the vehicle.

[0094] In addition, in the function control module 1002, if the enable control pin EN6 is damaged, the N-MOS transistor T1015 can be forcibly turned off through the NPN transistor T1018. The specific connection method of the circuit is as follows: the pin S4 of the NPN transistor T1017 is also connected to the pin S5 of the NPN transistor T1018, the pin S4 of the NPN transistor T1018 is connected to the enable control pin EN8 after connecting to the resistor R19, the resistor R20 is connected between the pin S4 of the NPN transistor T1018 and the pin S6 of the NPN transistor T1018, and the pin S6 of the NPN transistor T1018 is grounded.

[0095] When the enable control pin EN6 fails, the NPN transistor T1018 can be turned on by the controller SBC1004 through the enable control pin EN8, which will cause the PNP transistor T1016 and the NPN transistor T1017 to be forced to turn off, thereby turning off the N-MOS transistor T1015, thereby interrupting the power output to the single-function module.

[0096] It should be understood that the multi-power supply system may also include multiple functional control modules that respectively transmit power to each single-functional module, wherein the circuit structure of each functional control module is similar to the circuit structure of the functional control module 1002 in the above-mentioned single-functional output circuit output2, and the embodiments of the present application do not limit this.

[0097] In this way, the above-mentioned multi-power supply system can realize separate power supply of multiple power supplies to meet power supply needs; at the same time, some core functional components in the vehicle can also be powered separately to improve the safety of vehicle driving; in addition, the multi-power supply system can also support the expansion of one or more backup power supplies to meet power expansion needs.

[0098] In some embodiments, the present application also provides a vehicle, comprising the multi-power supply system mentioned above.

[0099] The above is only a specific implementation of the present application. Those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Although the description of the present application is combined with some embodiments, this does not mean that the features of the present application are limited to the implementation. On the contrary, the purpose of introducing the application in combination with the implementation is to cover other options or modifications that may be extended based on the claims of the present application. In order to provide a deep understanding of the present application, many specific details are included in the above-mentioned embodiment description. The present application can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present application, some specific details are omitted in the description. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0100] It is understood that the connection relationship described in this application refers to direct or indirect connection. For example, the connection between A and B can be either a direct connection between A and B or an indirect connection between A and B through one or more other electrical components. For example, A can be directly connected to C, and C can be directly connected to B, so that A and B are connected through C. It is also understandable that the "A connected to B" described in this application can be a direct connection between A and B, or an indirect connection between A and B through one or more other electrical components.

[0101] In the description of this application, the words "first", "second", "third", etc. are only used to distinguish different objects, and do not limit the quantity and execution order, and the words "first", "second", "third", etc. do not necessarily limit them to be different. In addition, the terms "include", "comprises", or any other variants thereof are intended to cover non-exclusive inclusions.

[0102] In the description of the embodiments of the present application, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connected", and "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0103] Although the present application has been illustrated and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the present application.

Claims

1. A multi-power system, characterized in that: include: A main power supply, at least one backup power supply, at least one anti-reverse control module, a power supply detection module, a main output circuit and a plurality of single-function output circuits; wherein, The main power supply is respectively connected to the main output circuit and each of the multiple single-function output circuits, and the main power supply is used to supply power through the main output circuit and each of the multiple single-function output circuits; Each backup power supply in the at least one backup power supply corresponds to each anti-reverse control module in the at least one anti-reverse control module, and each backup power supply is connected to the corresponding anti-reverse control module respectively; Each of the backup power supplies is respectively connected to the main output circuit and each of the single-function output circuits in the multiple single-function output circuits through the corresponding anti-reverse control module, and each of the backup power supplies is used to supply power through the main output circuit and each of the single-function output circuits in the multiple single-function output circuits when the corresponding anti-reverse control module is turned on; The power supply detection module is connected to the main power supply and the backup power supplies respectively, and is used to detect the currently available power in the main power supply and the backup power supplies, and control the anti-reverse control module corresponding to each backup power supply to be turned on or off.

2. The system according to claim 1, characterized in that Each anti-reverse control module in the at least one anti-reverse control module includes a first transistor, a second transistor, a third transistor, a fourth transistor and a first enable control pin; wherein, A source pin of the first transistor is connected to a source pin of the second transistor; The drain pin of the first transistor is connected to each backup power supply corresponding to each anti-reverse control module; The drain pin of the second transistor is respectively connected to the main output circuit and each single-function output circuit of the plurality of single-function output circuits; The collector pin of the third transistor is connected to the gate pin of the first transistor and the gate pin of the second transistor respectively; The base pin of the third transistor is connected to the collector pin of the fourth transistor; The base pin of the fourth transistor is connected to the first enable control pin; An emitter pin of the fourth transistor is grounded.

3. The system according to claim 2, characterized in that Each anti-reverse control module in the at least one anti-reverse control module further includes a fifth transistor and a first diode; wherein, The collector pin of the fifth transistor is connected to the gate pin of the first transistor; The emitter pin of the fifth transistor is connected to the anode of the first diode; The base pin of the fifth transistor is grounded; A cathode of the first diode is connected to a source pin of the first transistor.

4. The system according to claim 1, characterized in that The system includes a sixth transistor, a seventh transistor and an eighth transistor; wherein, A source pin of the sixth transistor is connected to the main power supply; The drain pin of the sixth transistor is respectively connected to the main output circuit and each single-function output circuit of the plurality of single-function output circuits; The gate pin of the sixth transistor is connected to the collector pin of the seventh transistor; The base pin of the seventh transistor is connected to the collector pin of the eighth transistor; The base pin of the eighth transistor is connected to the second enable control pin; An emitter pin of the eighth transistor is grounded.

5. The system according to claim 1, characterized in that The power supply detection module includes a ninth transistor and a resistance module; wherein, The base pin of the ninth transistor is connected to the third enable control pin; The collector pin of the ninth transistor is connected to the first end of the resistance module; The second end of the resistance module is grounded.

6. The system according to claim 1, characterized in that Each of the plurality of single-function output circuits comprises a function control module, which is used to supply power through the corresponding single-function output circuit when the function control module is turned on; and The function control module includes a tenth transistor, an eleventh transistor, a twelfth transistor and a fourth enable control pin; wherein, The source pin of the tenth transistor is connected to the power receiving device; The drain pin of the tenth transistor is respectively connected to the main power supply and each of the backup power supplies; The gate pin of the tenth transistor is connected to the collector pin of the eleventh transistor; The base pin of the eleventh transistor is connected to the collector pin of the twelfth transistor; The base pin of the twelfth transistor is connected to the fourth enable control pin; An emitter pin of the twelfth transistor is grounded.

7. The system according to claim 6, characterized in that The function control module further includes a thirteenth transistor and a fourteenth transistor; The thirteenth transistor and the fourteenth transistor are used to control the tenth transistor when the fourth enable control pin fails; wherein, The collector pin of the thirteenth transistor is connected to the base pin of the twelfth transistor; The emitter pin of the thirteenth transistor is grounded; The base pin of the thirteenth transistor is connected to the collector pin of the fourteenth transistor.

8. The system according to claim 1, characterized in that The system also includes a power supply assembly module, a power supply module, a power supply detection module and a controller; wherein, One end of the power supply assembly module is connected to the main power supply and each backup power supply respectively, and the other end of the power supply assembly module is connected to the controller for supplying power to the controller; The power supply module is connected to the power supply assembly module and is used to supply power to an external device; The power detection module is connected to the power supply module and is used to perform power monitoring on the power supply module.

9. The system according to claim 8, characterized in that The system includes a plurality of diodes; wherein, The plurality of diodes correspond one-to-one to the main power supply and each of the at least one backup power supply, and the anode of each of the plurality of diodes is respectively connected to the corresponding main power supply and each of the at least one backup power supply; A cathode of each of the plurality of diodes is connected to the power supply assembly module.

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

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