A power management system for a vehicle controller and a vehicle

Abstract

The present invention discloses a power management system for a vehicle controller and a vehicle. When the key switch signal of the vehicle is an ON signal, each power management module outputs a core power signal, and when the core power signal reaches a preset core power voltage, a power reset signal is provided to the hardware security circuit, and the operating state of the vehicle controller is controlled through the hardware security circuit; when the MCU power signal is a preset MCU power voltage and the power reset signal is a preset power reset voltage, the MCU module and the power management module perform information interaction; the MCU module controls the MCU enable signal provided to the hardware security circuit according to the interaction result, and each power management module controls the power enable signal provided to the hardware security circuit according to the interaction result; the hardware security circuit controls whether the peripheral circuit is enabled according to the MCU enable signal and the power enable signal.

Description

Technical Field

[0001] Embodiments of the present invention relate to the field of vehicles, and in particular, to a power management system for a vehicle controller and a vehicle. Background Art

[0002] The vehicle controller is an important part for controlling the normal driving of a vehicle, and the power management module of the vehicle controller can provide the required power for the vehicle controller to realize the normal operation of the vehicle controller. The power management module is usually integrated in the power management system.

[0003] In the prior art, the power management module in the power management system usually does not have the self-monitoring ability, and it is often necessary to use the microcontroller unit (MCU) of the vehicle main controller to realize the monitoring of the power management module, which additionally occupies the resources of the MCU. In addition, when the above power management module works in cooperation with the peripheral circuits of the vehicle controller, there is a problem of poor integration of the hardware circuit. Summary of the Invention

[0004] Embodiments of the present invention provide a power management system for a vehicle controller and a vehicle. The power management module thereof has a self-monitoring function, does not need to additionally occupy the resources of the vehicle main controller, and uses two power management modules to improve the integration of the power management system.

[0005] In a first aspect, embodiments of the present invention provide an MCU module, a hardware security circuit, and two power management modules;

[0006] Each of the power management modules is configured to output a core power signal when the key switch signal of the vehicle is an ON signal; one of the power management modules is configured to provide an MCU power signal to the MCU module; and the other power management module is configured to provide a peripheral power signal

[0007] Each of the power management modules is further configured to provide a power reset signal to the hardware security circuit when the core power signal reaches a preset core power voltage, and control the working state of the vehicle controller through the hardware security circuit;

[0008] The MCU module is configured to perform information interaction with the power management module when the MCU power signal reaches a preset MCU power voltage and the power reset signal reaches a preset power reset voltage;

[0009] The hardware security circuit is configured to control the reset of the vehicle controller according to the power reset signal;

[0010] The MCU module is further configured to control the MCU enable signal provided to the hardware security circuit according to the interaction result of the information interaction with the power management module;

[0011] Each of the power management modules is further configured to control the power enable signal provided to the hardware security circuit according to the interaction result of the information interaction with the MCU module;

[0012] The hardware security circuit is further configured to control whether the peripheral circuit is enabled according to the MCU enable signal and the power enable signal.

[0013] Optionally, each of the power management modules is further configured to provide a communication power signal to the communication module when the core power signal reaches the preset core power voltage.

[0014] Optionally, each of the power management modules is further configured to provide a sensor power signal to the external sensor when the communication power signal reaches the preset communication power voltage.

[0015] Optionally, each of the power management modules is further configured to perform a delay timing before providing a power reset signal to the hardware security circuit, and provide the power reset signal to the hardware security circuit when the delay time reaches the preset delay time and the core power signal reaches the preset core power voltage.

[0016] Optionally, when each of the power management modules is initialized, it performs information interaction with the MCU module, determines the interaction result of the information interaction with the MCU module before the initialization timing reaches the preset initialization time, and enters the power-on success state when the interaction result meets the condition of successful interaction, and provides a valid signal of the power enable signal to the hardware security circuit.

[0017] Optionally, the MCU module includes the SPI communication terminal of the MCU and the MCU error monitoring signal sending terminal; the power management module includes the power management SPI communication terminal and the error monitoring signal receiving terminal;

[0018] The conditions for successful interaction include:

[0019] The SPI communication terminal of the MCU and the power management SPI communication terminal complete an effective SPI communication;

[0020] The SPI communication terminal of the MCU sends a valid watchdog signal to the power management SPI communication terminal; the error monitoring signal receiving terminal receives the valid signal sent by the MCU error monitoring signal sending terminal.

[0021] Optionally, it further includes: a key switch signal processing circuit and a power supply switch circuit;

[0022] The key switch signal processing circuit is used to process the key switch signal of the vehicle and then provide it to the power supply switch circuit, the power management module, and the MCU module respectively;

[0023] The power supply switch circuit is used to control the power signal provided by the vehicle's battery to the power management module according to the key switch signal;

[0024] Both the power management module and the MCU module are used to judge whether the key switch signal is an ON signal according to the key switch signal.

[0025] Optionally, the power supply switch circuit includes a switch control circuit, a charge pump circuit, a voltage monitoring circuit, and a power supply switch;

[0026] The voltage monitoring circuit is used to monitor the power signal provided to the power management module and feedback the monitoring signal of the power signal to the switch control circuit;

[0027] The charge pump circuit is used to output an enabling voltage signal to the switch control circuit according to the power signal provided to the power management module;

[0028] The switch control circuit is used to control the on / off state of the power supply switch according to the monitoring signal of the power signal, the enabling voltage signal, and the key switch signal;

[0029] The power supply switch is used to control the power signal provided by the vehicle's battery to the power management module.

[0030] Optionally, the power supply switch circuit further includes a power filter circuit;

[0031] The power filter circuit is used to filter the power signal output to the power management module via the power supply switch.

[0032] Optionally, the key switch signal processing circuit includes an anti-reverse unit, a voltage dividing unit, and a switch signal filtering unit;

[0033] The key switch signal is provided to the power management module, the MCU module, and the power supply switch circuit respectively after passing through the anti-reverse unit, the voltage dividing unit, and the switch signal filtering unit.

[0034] Optionally, the hardware security circuit includes a reset circuit and an enable circuit;

[0035] The reset circuit is used to control the reset of the vehicle controller according to the power reset signal, the MCU power signal, and the peripheral power signal;

[0036] The enabling circuit is used to control the enabling of the peripheral circuit according to the MCU enabling signal and the power supply enabling signal.

[0037] Optionally, the reset circuit includes a first diode and two reset units corresponding to the two power management modules one by one;

[0038] The first diode is electrically connected between the power reset signal output ends of the two power management modules;

[0039] Each reset unit includes a first resistor and a first capacitor; one end of the first resistor of one of the reset units is electrically connected to the MCU power signal output end of one of the power management modules; one end of the first resistor of the other reset unit is electrically connected to the peripheral power signal output end of the other power management module; the other ends of the first resistors of the respective reset units are electrically connected to the power reset signal output ends of the respective power management modules at a first node; one end of the first capacitor of each reset unit is electrically connected to the first node, and the other end is grounded;

[0040] The reset signal receiving end of the peripheral circuit is electrically connected to the first node.

[0041] Optionally, the enabling circuit includes a pull-up unit, an MCU enabling control unit, and power supply enabling control units corresponding to the two power management modules one by one;

[0042] One end of the pull-up unit is electrically connected to the MCU power signal output end of any one of the power management modules, and the other end is electrically connected to the peripheral circuit at a second node;

[0043] The MCU enabling control unit includes a second resistor, a third resistor, a fourth resistor, and a first triode; one end of the second resistor is electrically connected to the MCU power signal output end of the power management module, and the other end is connected to the MCU enabling signal output end of the MCU module at a third node; one end of the third resistor is electrically connected to the third node, and the other end is electrically connected to a fourth node; one end of the fourth resistor is electrically connected to the fourth node, and the other end is grounded; the base of the first triode is electrically connected to the fourth node, the collector is electrically connected to the second node, and the emitter is grounded;

[0044] Each of the power enable control units includes a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a second transistor and a third transistor; one end of the fifth resistor is electrically connected to the power enable signal output terminal of the power management module, and the other end is electrically connected to the fifth node; one end of the sixth resistor of one of the power enable control units is electrically connected to the MCU power signal output terminal of one of the power management modules; one end of the sixth resistor of another power enable control unit is electrically connected to the peripheral power signal output terminal of another power management module; the other end of the sixth resistor of each of the power enable control units is electrically connected to the fifth node;

[0045] The base of the second transistor of each power enable control unit is electrically connected to the fifth node, and the collector is electrically connected to the sixth node; the emitter of the second transistor of one of the power enable control units is electrically connected to the MCU power signal output terminal of one of the power management modules; the emitter of the second transistor of another power enable control unit is electrically connected to the peripheral power signal output terminal of another power management module;

[0046] One end of the seventh resistor of each power enable control unit is electrically connected to the sixth node, and the other end is electrically connected to the seventh node; one end of the eighth resistor of each power enable control unit is electrically connected to the seventh node, and the other end is grounded; the base of the third transistor of each power enable control unit is electrically connected to the seventh node, the collector is electrically connected to the second node, and the emitter is grounded.

[0047] Optionally, a clamping circuit is also included;

[0048] The clamping circuit is electrically connected between the MCU power signal output end of one of the power management modules and the peripheral power signal output end of another of the power management modules; the clamping circuit is used to clamp the peripheral power signal output from the peripheral power signal output end of another of the power management modules according to the MCU power signal output from the MCU power signal output end of one of the power management modules.

[0049] In a second aspect, an embodiment of the present invention further provides a vehicle, comprising at least: a battery, a key switch, and a battery management system of the vehicle controller provided by any embodiment of the present invention;

[0050] The storage battery is used to provide a power signal;

[0051] The key switch is used to provide a key switch signal.

[0052] After receiving the key switch signal, each power management module in the embodiment of the present invention outputs a core power signal, provides a power reset signal to the hardware security circuit based on the core power signal, and controls the working state of the vehicle controller through the hardware security circuit; when the MCU power signal meets the preset MCU power voltage and the power reset signal meets the preset power reset voltage, the MCU module interacts with the power management module, and according to the interaction result, controls the MCU enable signal provided to the hardware security circuit and the power enable signal provided to the hardware security circuit. The hardware security circuit controls whether the peripheral circuit needs to be enabled based on the MCU enable signal and the power enable signal. The power management module in the technical solution of the present invention realizes a self-monitoring function, does not need to occupy the monitoring resources of the main controller additionally, and reduces the resource occupancy rate of the MUC. In addition, two power chips are used in cooperation with the peripheral circuit of the vehicle controller, improving the integration degree of the power management system of the vehicle controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0054] Figure 1 FIG. is a schematic structural diagram of a power management system of a vehicle controller according to an embodiment of the present invention;

[0055] Figure 2 FIG. is a schematic structural diagram of a power management module in a power management system of a vehicle controller according to an embodiment of the present invention;

[0056] Figure 3 FIG. is a schematic structural diagram of another power management module in a power management system of a vehicle controller according to an embodiment of the present invention;

[0057] Figure 4 FIG. is a schematic structural diagram of another power management system of a vehicle controller according to an embodiment of the present invention;

[0058] Figure 5 FIG. is a schematic structural diagram of a power supply switch circuit in a power management system of a vehicle controller according to an embodiment of the present invention;

[0059] Figure 6 FIG. is a schematic structural diagram of a key switch signal processing circuit in a power management system of a vehicle controller according to an embodiment of the present invention;

[0060] Figure 7It is a schematic structural diagram of a reset circuit in a power management system of a vehicle controller according to an embodiment of the present invention;

[0061] Figure 8 It is a schematic structural diagram of an enable circuit in a power management system of a vehicle controller according to an embodiment of the present invention;

[0062] Figure 9 It is a schematic structural diagram of another power management system of a vehicle controller according to an embodiment of the present invention. Detailed implementation manners

[0063] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0064] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0065] Figure 1It is a schematic structural diagram of a power management system for a vehicle controller provided according to an embodiment of the present invention. The power management system includes an MCU module 10, a hardware security circuit 20, and two power management modules 30. Each power management module 30 is configured to output a core power signal when the key switch signal of the vehicle is an ON signal. One of the power management modules 30 is used to provide an MCU power signal to the MCU module 10, and the other power management module 30 is used to provide a peripheral power signal. Each power management module 30 is further configured to provide a power reset signal to the hardware security circuit 20 when the core power signal reaches a preset core power voltage, and control the working state of the vehicle controller through the hardware security circuit 20. The MCU module 10 is configured to perform information interaction with the power management module 30 when the MCU power signal reaches a preset MCU power voltage and the power reset signal reaches a preset power reset voltage. The hardware security circuit 20 is configured to control the reset of the vehicle controller according to the power reset signal. The MCU module 10 is further configured to control the MCU enable signal provided to the hardware security circuit 20 according to the interaction result of the information interaction with the power management module 30. Each power management module 30 is further configured to control the power enable signal provided to the hardware security circuit 20 according to the interaction result of the information interaction with the MCU module 10. The hardware security circuit 20 is further configured to control whether the peripheral circuit 50 is enabled according to the MCU enable signal and the power enable signal.

[0066] Among them, the two power management modules 30 can be respectively a main power management module and an auxiliary power management module. The main power management module can provide an MCU power signal to the MCU module 10, while the auxiliary power management module can only provide a peripheral power signal to the peripheral circuit. In the embodiment of the present invention, the power management module 30 that can provide an MCU power signal is referred to as one of the power management modules, and the power management module 30 that can only provide a peripheral power signal is referred to as the other power management module. The power management module 30 includes two states: a working state and a non-working state. When the vehicle does not insert the key, the key switch signal of the vehicle is OFF, and the power management module 30 does not receive the key switch signal of the opening instruction, and the power management module 30 is in the non-working state. The non-working state can also be understood as the power management module 30 not being powered on. When the vehicle inserts the key, the key switch signal of the vehicle is ON, and the power management module 30 receives the key switch signal of the opening instruction, and the power management module 30 is in the working state. The working state can also be understood as the power management module 30 starting to be powered on.

[0067] When the key switch signal of the vehicle is an ON signal, the power management module 30 starts to power on. The battery voltage input to the power management module 30 can effectively reduce the output voltage of the power management module 30 by using the BUCK circuit provided inside the power management module 30. The power management module 30 samples the output voltage of the BUCK circuit, and the power management module 30 performs closed-loop regulation of the BUCK voltage according to the feedback signal. Among them, the BUCK circuit can be understood as a step-down circuit.

[0068] Furthermore, the power management module 30 compares the core power signal with a preset core power voltage. When the core power signal meets the conditions, the power management module 30 provides a power reset signal to the hardware security circuit 20; the MCU module 10 exchanges information with the power management module 30. Exemplarily, the core power signal output by the power management module 30 is an ADC (Analog-to-Digital Converter) signal. The power management module 30 can provide a sensor power signal to the external sensor 40 to ensure the normal operation of the external sensor 40. The power management system includes two power management modules 30, and the two power management modules 30 respectively correspond to two external sensors 40. The types of the two external sensors 40 can be the same or different, and there is no mutual influence or interference during the operation of the external sensors 40.

[0069] Exemplarily, Figure 2 is a schematic structural diagram of a power management module in a power management system of a vehicle controller according to an embodiment of the present invention, Figure 3 is a schematic structural diagram of another power management module in a power management system of a vehicle controller according to an embodiment of the present invention. Figure 2 The power management module shown in Figure 3 can be the main power management module, and the power management module shown in Figure 2 and Figure 3, when each power management module 30 receives the key switch signal of the vehicle, it is input to the power management module 30 through the WAK pin, and the 6V power supply of the corresponding power management module 30 starts to be powered on, and the 6V power supply is output after passing through the internally set MOS transistor and the externally set filter circuit in sequence. The filter circuit includes the corresponding filter unit, and the filter unit includes capacitors but is not limited to capacitors. For example, the filter unit includes resistors R2 and R3, and capacitors C3, C4, C5, C6, and C7. The capacitors exist in parallel, which can effectively reduce the electromagnetic interference of the switching MOS transistor. The specific number of resistors and capacitors is not specifically limited here and can be further adjusted according to the actual usage scenario and usage conditions. PG in the power management module 30 is the ground pin of the BUCK circuit to achieve a ground connection, and the voltage at PG is 0V. The 6V power supply is sampled back to the power management module 30 through the FB pin. Capacitors C31 and C32 are respectively set in the circuits corresponding to the PG and FB pins. QUC is the 5V power supply output pin of the power management module 30. Among them, the QUC pin of the main power management module outputs the 5V MCU power signal VDD5_1, and the QUC pin of the auxiliary power management module outputs the 5V peripheral power signal VDD5_2. The MCU power signal VDD5_1 powers the MCU chip, and the peripheral power signal VDD5_2 powers other peripheral chips of the vehicle controller. QVR is the power signal output pin of the high-precision power supplies V5AD_1 and V5AD_2. The high-precision power supply V5AD_1 provides a reference voltage for the internal ADC of the MCU module 10 chip, and the high-precision power supply V5AD_2 is turned off after the power management module 30 completes power-on initialization. The circuit corresponding to the QVR pin includes capacitors C10 and C11. QCO is the output pin of the power signals V5COM_1 and V5COM_2, which respectively power the CAN transceiver. The circuit corresponding to the QCO pin includes capacitors C12 and C13. QT1 and QT2 are respectively the output pins of the power signals V5SS1 and V5SS4 of the external sensor 40. The power signals V5SS1 and V5SS4 of the external sensor 40 power the external sensor 40. Capacitors C14 and capacitor C15, diodes D3 and diode D4 are respectively set in the circuits corresponding to the QT1 and QT2 pins. Preferably, the diode can be a TVS type diode to provide overvoltage protection for overvoltage input to ensure that there is no overvoltage situation at the QT1 and QT2 pins of the power management module 10. SS is the output pin of the enable signal, and ROT is the output pin of the reset signal. SPI is the port for communication between the power management module 30 and the MCU module 10, which can realize the communication and information interaction between the MCU module 10 and the power management module 30. Figure 2 Taking one power management module 30 as an example for illustration, the circuit setting and function implementation method of the other power management module 30 are the same as those of the above-mentioned power management module 30, and will not be elaborated here.

[0070] In addition, an ERR pin and a WDI pin are provided in the main power management module. ERR is the pin for the power management module 30 to monitor faults of the MCU module 10, and WDI is the status monitoring pin of the MCU module 10. The status monitoring can also be understood as that the power management module 30 has a watchdog function, that is, to effectively monitor the status of the MCU module 10.

[0071] Specifically, when both the MCU power signal and the power reset signal reach the corresponding preset MCU power voltage and preset power reset voltage, the power management module 30 can realize information interaction with the MCU module 10. The specific content of the information interaction can be that the power management module 30 is powered on normally and the MCU module 10 works normally, etc. The specific interaction content is not specifically limited here and can be determined according to the actual situation. According to the interaction result of the information interaction, both the MCU module 10 and each power module 30 can provide an enable signal to the hardware security circuit 20. The corresponding enable signals are the MCU enable signal and the power enable signal respectively. The output pin of the enable signal corresponds to the SS pin. During normal operation, both the MCU enable signal and the power enable signal are high-level signals. During abnormal operation, one of the MCU enable signal and the power enable signal is a low-level signal. When both the MCU enable signal and the power security signal are high-level signals, the EN signal is high-level, and the hardware security circuit 20 can control the peripheral circuit 50 to be enabled according to the above high-level signals to realize the normal operation of the peripheral circuit 50. When the MCU enable signal is high-level or the power enable signal is low-level, the hardware security circuit 20 controls the peripheral circuit 50 not to be enabled.

[0072] After receiving the key switch signal, each power management module in the embodiment of the present invention outputs a core power signal, and based on the core power signal, provides a power reset signal to the hardware security circuit and controls the working state of the vehicle controller through the hardware security circuit; when the MCU power signal meets the preset MCU power voltage and the power reset signal meets the preset power reset voltage, the MCU module performs information interaction with the power management module, and according to the interaction result, controls the MCU enable signal provided to the hardware security circuit and the power enable signal provided to the hardware security circuit. The hardware security circuit controls whether the peripheral circuit needs to be enabled based on the MCU enable signal and the power enable signal. The power management module in the technical solution of the present invention realizes a self-monitoring function, does not need to occupy the monitoring resources of the main controller additionally, and reduces the resource occupancy rate of the MUC. In addition, two power chips are used to cooperate with the peripheral circuit of the vehicle controller, improving the integration degree of the power management system of the vehicle controller.

[0073] Based on the above embodiments, optionally, each power management module 30 is further configured to provide a communication power signal to the communication module when the core power signal reaches a preset core power voltage.

[0074] Specifically, when the core power signal reaches the preset core power voltage, the power management module 30 provides a communication power signal to the communication module. When the communication module receives the communication power signal from the power management module 30, normal communication interaction can be achieved between the communication module and the power management module 30.

[0075] Optionally, each power management module is further configured to provide a sensor power signal to the external sensor when the communication power signal reaches a preset communication power voltage, so that the external sensor can work properly.

[0076] Optionally, each power management module 30 is further configured to perform a delay timing before providing a power reset signal to the hardware security circuit 20, and provide a power reset signal to the hardware security circuit when the delay time reaches a preset delay time and the core power signal reaches the preset core power voltage.

[0077] Specifically, a reset delay timer is set in each power management module 30, and the reset delay time can be programmed. The preset delay time can be set to 10 ms. Here, the time for the delay timing is not specifically limited. Preferably, the core power signal provided by each power management module 30 can be an ADC signal. When the ADC power signal can reach the preset core power voltage, the delay timer starts timing. When the delay time reaches the preset delay time, the power management module 30 can provide a power reset signal to the hardware security circuit 20 so that the hardware security circuit 20 can receive the power reset signal. Otherwise, each power management module 30 will not be able to provide a power reset signal.

[0078] Optionally, when each power management module is initialized, it performs information interaction with the MCU module, determines the interaction result of the information interaction with the MCU module before the initialization timing reaches the preset initialization time, and enters the power-on success state and provides a valid signal of the power enable signal to the hardware security circuit when the interaction result meets the condition of successful interaction.

[0079] Among them, during the process of each power management module 30 realizing signal interaction with the MCU module 10, the initialization timer built into the battery management module 30 starts timing. Before the initialization timing reaches the preset initialization time, the interaction situation between each power management module 30 and the MCU module 10 is determined, and further the interaction result and whether the interaction is successfully realized are determined. On the premise of successful interaction, each power module 30 smoothly enters the power-on success state. In this state, each power management module 30 can provide a power enable signal to the hardware security circuit 20, and the provided power enable signal is also a valid signal. Exemplarily, the preset initialization time can be 600 ms. Within 600 ms, each power management module 30 can continuously perform information interaction with the MCU module 10, and then judge whether the interaction is successful according to the interaction result, which can also be understood as whether an effective interaction has been carried out. When it is determined that the information interaction is effective, the MCU module 10 sends an instruction to the power management module 30, and each power management module 30 realizes the conversion from the initialization state to the power-on success state, so that each power management module 30 provides an effective power enable signal to the hardware security circuit 20.

[0080] Further, the MCU module 10 includes the SPI communication end of the MCU and the MCU error monitoring signal sending end; the power management module 30 includes the power management SPI communication end and the error monitoring signal receiving end. The MCU module 10 and each power management module 30 can be communicatively connected through the SPI communication end of the MCU and the power management SPI communication end using a communication protocol. The ERR pin of the power management module 30 receives the error monitoring signal sent by the SMU pin of the MCU module 10 to realize the monitoring of the MCU module 10 by the power management module 30. The MCU module 10 and each power management module 30 can perform information interaction. The conditions for successful interaction can include that the SPI communication end of the MCU and the power management SPI communication end complete an effective SPI communication, and the SPI communication end of the MCU sends a valid watchdog signal to the power management SPI communication end; the error monitoring signal receiving end receives the valid signal sent by the MCU error monitoring signal sending end.

[0081] Specifically, an effective SPI communication can also be understood as that the SPI communication end of the MCU and the power management SPI communication end can realize the transmission of information, and the content of the transmitted information is not specifically limited. The transmitted information can be divided into multiple information points, and only when all the included information points are transmitted is it called an effective SPI communication. The power management module 30 has a watchdog function, that is, the power management module 30 has a monitoring function, and a valid watchdog signal can be understood as that the power management module 30 can monitor and successfully obtain a signal with a fixed frequency and duty cycle sent by the MCU module 10.

[0082] Optionally, Figure 4 FIG. Figure 4 is a schematic structural diagram of another power management system for a vehicle controller according to an embodiment of the present invention. The power management system further includes a key switch signal processing circuit 70 and a power supply switch circuit 80. The key switch signal processing circuit 70 is configured to process the key switch signal of the vehicle and then provide it to the power supply switch circuit 80, the power management module 30, and the MCU module 10 respectively. The power supply switch circuit 80 is configured to control the power signal provided by the vehicle's battery to the power management module 30 according to the key switch signal. Both the power management module 30 and the MCU module 10 are configured to determine whether the key switch signal is an ON signal according to the key switch signal.

[0083] Specifically, after receiving the key switch signal of the vehicle, the key switch signal processing circuit 70 processes the key switch signal, including voltage division and filtering of the key switch signal. After being processed by the key switch signal processing circuit 70, the key switch signal can be divided into four-way key switch signals and transmitted to the power supply switch circuit 80, each power management module 30, and the MCU module 10 respectively. When the power supply switch circuit 80 receives the key switch signal of the vehicle, the power supply switch circuit 80 is turned on to control the vehicle's battery to provide the required power signal to the power management module 30. The key switch signal includes two types: ON signal and OFF signal. The MCU module 10 also further determines the key switch signal according to the transmitted key switch signal. When the key switch signals are all ON signals, each power management module 30 and the MCU module 10 can be in a condition to start working.

[0084] Optionally, Figure 5 FIG. Figure 5 is a schematic structural diagram of a power supply switch circuit in a power management system for a vehicle controller according to an embodiment of the present invention. The power supply switch circuit 80 includes a switch control circuit 81, a charge pump circuit 82, a voltage monitoring circuit 83, and a power supply switch 84. The voltage monitoring circuit 83 is configured to monitor the power signal provided to the power management module 30 and feedback the monitoring signal of the power signal to the switch control circuit. The charge pump circuit 82 is configured to output an enabling voltage signal to the switch control circuit 81 according to the power signal provided to the power management module 30. The switch control circuit 81 is configured to control the on / off state of the power supply switch according to the monitoring signal of the power signal, the enabling voltage signal, and the key switch signal. The power supply switch 84 is configured to control the power signal provided by the vehicle's battery to the power management module.

[0085] Specifically, the power switch circuit 80 can turn on or off the connection between the battery and each power management module 30. When the control circuit 81 receives the key switch signal as an ON signal, the power switch 84 is controlled to be partially turned on. A MOS tube is provided in the power switch 84. The MOS tube is in an adjustment state, showing intermittent on and off and transmitting the power switch signal in the adjustment state to the charge pump circuit 82. The push circuit inside the charge pump circuit generates the gate turn-on voltage required for the switch MOS tube, outputs the turn-on voltage signal to the switch control circuit 81, and then transmits it to the power switch 84. The power switch 84 can transmit the power signal provided by the vehicle battery to the power management module 30. Before the power signal is transmitted to the power management module, the power signal is monitored by the voltage monitoring circuit 83, and the monitoring signal of the power signal is transmitted to the switch control circuit 81 to avoid damage to the power management module caused by overvoltage of the power signal. The switch control circuit 81 controls the on or off of the power switch 84 according to the monitoring signal of the power signal, the turn-on voltage signal, and the key switch signal.

[0086] Furthermore, the power switch circuit 80 further includes a power filter circuit 85; the power filter circuit 85 is used to filter the power signal output to the power management module 30 via the power switch 84. The power filter circuit 85 can filter the power signal output by the power switch 84, filter out power signals that do not meet the conditions, and filter out electromagnetic interference.

[0087] Optionally, Figure 6 It is a structural schematic diagram of a key switch signal processing circuit in a power management system of a vehicle controller provided according to an embodiment of the present invention. The key switch signal processing circuit 70 includes an anti-reverse unit 71, a voltage divider unit 72 and a switch signal filtering unit 73; the key switch signal is provided to the power management module 30, the MCU module 10, and the power supply switch circuit 80 respectively via the anti-reverse unit 71, the voltage divider unit 72 and the switch signal filtering unit 73.

[0088] Specifically, the anti-reverse unit 71 of the key switch signal processing circuit 70 includes but is not limited to an anti-reverse diode, the voltage divider unit 72 includes but is not limited to a resistor, and the number of the voltage divider units 72 can be multiple, which is not specifically limited here. The switch signal filtering unit 73 includes but is not limited to a capacitor or a resistor and a capacitor.

[0089] Exemplarily, one end of the anti-reverse unit 71 is connected to the ESD capacitor, and the other end is connected to the voltage dividing unit 72. The ESD capacitor can protect the key switch signal processing circuit 70 from electrostatic interference. One end of the voltage dividing unit 72 is connected to the anti-reverse unit 71, and the other end is connected to the zener diode and also connected to another voltage dividing unit 72. One end of the other voltage dividing unit 72 is respectively connected to the switch signal filtering unit 73 of the main controller 10 and the switch signal filtering unit 73 of each power management module 30, and the other end is connected to the switch signal filtering unit 73 of the power supply switch circuit 80. When the key switch signal passes through the anti-reverse unit 71, the voltage dividing unit 72 and the corresponding switch signal filtering units 73 respectively, the key switch signal can be transmitted to the corresponding power management module 30, the MCU module 10, and the power supply switch circuit 80 respectively.

[0090] Optionally, Figure 7 is a schematic structural diagram of a reset circuit in a power management system of a vehicle controller according to an embodiment of the present invention, Figure 8 is a schematic structural diagram of an enabling circuit in a power management system of a vehicle controller according to an embodiment of the present invention. Refer to Figure 7 and Figure 8 , the hardware security circuit 20 includes a reset circuit 21 and an enabling circuit 22; the reset circuit 21 is used to control the vehicle controller to be reset according to the power reset signal, the MCU power signal, and the peripheral power signal; the enabling circuit 22 is used to control the peripheral circuit 50 to be enabled according to the MCU enabling signal and the power enabling signal.

[0091] Specifically, the reset circuit 21 can implement the reset of the peripheral circuit 50 or the power management system of the vehicle controller. During normal operation, the power reset signal, the MCU power signal, and the peripheral power signal are all high-level signals. When the reset circuit 21 receives a high-level signal, it will not reset the peripheral circuit 50. Once the reset circuit 21 receives a low-level signal, it will control the peripheral circuit 50 to be reset. The enabling circuit 22 determines whether to enable the peripheral circuit 50 according to the received MCU enabling signal and the power enabling signal. When the MCU enabling signal is low level and the power security signal is high level, the enabling circuit 92 can enable the peripheral circuit 50. When the MCU enabling signal is high level or the power security signal is low level, the enabling circuit 92 will not enable the peripheral circuit 50.

[0092] Optionally, continue to refer to Figure 7, the reset circuit 21 includes a first diode 211 and two reset units 212 corresponding to the two power management modules 30 one by one; the first diode 211 is electrically connected between the power reset signal output terminals of the two power management modules 30; each reset unit 212 includes a first resistor 2121 and a first capacitor 2122; one end of the first resistor 2121 of one reset unit 212 is electrically connected to the MCU power signal output terminal of one power management module 30 to receive the MCU power signal VDD5_1 output by the MCU power signal output terminal of this power management module 30; one end of the first resistor 2121 of the other reset unit 212 is electrically connected to the peripheral power signal output terminal of the other power management module 30 to receive the peripheral power signal VDD5_2 output by the peripheral power signal output terminal of this power management module 30; the other ends of the first resistors 2121 of the respective reset units 210 are electrically connected to the power reset signal output terminal of the power management module 30 at a first node; one end of the first capacitor 2122 is electrically connected to the first node and the other end is grounded; the reset signal receiving end of the peripheral circuit 50 is electrically connected to the first node.

[0093] Specifically, the power reset signals output by the power reset signal output terminals of the respective power management modules 30 are RESET1 and RESET2 respectively. When the power reset signals (RESET1 or RESET2) output by the power management module 30 are all high-level power reset signals monitored at the reset unit 212 after passing through the first diode 211 and the first capacitor 2122 in sequence, the power management system of the vehicle controller is not reset. Further, when the power reset signal RESET1 is low level, regardless of whether the power reset signal RESET2 is high level or low level, the power management system of the vehicle controller is reset. When the power reset signal RESET2 is low level and the power reset signal RESTE1 is high level, the peripheral circuit 50 is reset.

[0094] Optionally, the enabling circuit 22 includes a pull-up unit 221, an MCU enabling control unit 222, and power enabling control units 223 corresponding to the two power management modules 30 one by one; one end of the pull-up unit 221 is electrically connected to the MCU power signal output end of any one of the power management modules 30, and the other end is electrically connected to the peripheral circuit 50 at the second node; the MCU enabling control unit 222 includes a second resistor 2221, a third resistor 2222, a fourth resistor 2223, and a first triode 2224; one end of the second resistor 2221 is electrically connected to the MCU power signal output end of one of the power management modules 30, and the other end is connected to the MCU enabling signal output end of the MCU module 10 at the third node N3; one end of the third resistor 2222 is electrically connected to the third node N3, and the other end is electrically connected to the fourth node N4; one end of the fourth resistor 2223 is electrically connected to the fourth node N4, and the other end is grounded; the base of the first triode 2224 is electrically connected to the fourth node N4, the collector is electrically connected to the second node N2, and the emitter is grounded.

[0095] Each power enable control unit 223 includes a fifth resistor 2231, a sixth resistor 2232, a seventh resistor 2233, an eighth resistor 2234, a second triode 2235, and a third triode 2236; one end of the fifth resistor 2231 of each power enable control unit 223 is electrically connected to the power enable signal output terminal of each power management module 30 to respectively receive the power enable signals SS1 and SS2 output from the power enable signal output terminal of each power management module 30, and the other end is electrically connected to the fifth node N5; one end of the sixth resistor 2232 of one of the power enable control units 223 is electrically connected to the MCU power signal output terminal of one of the power management modules 30 to receive the MCU power signal VDD5_1 output from the MCU power signal output terminal of this power management module 30, and one end of the sixth resistor 2232 of the other power enable control unit 223 is electrically connected to the peripheral power signal output terminal of the other power management module 30 to receive the peripheral power signal VDD5_2 output from the peripheral power signal output terminal of this power management module 30; the other ends of the sixth resistors 2232 of each power enable control unit 223 are electrically connected to the fifth node N5; the base of the second triode 2235 is electrically connected to the fifth node, and the collector is electrically connected to the sixth node N6; the emitter of the second triode 2235 of one of the power enable control units 223 is electrically connected to the MCU power signal output terminal of one of the power management modules 30, and the emitter of the second triode 2235 of the other power enable control unit 223 is electrically connected to the peripheral power signal output terminal of the other power management module 30; one end of the seventh resistor 2233 of each power enable control unit 223 is electrically connected to the sixth node N6, and the other end is electrically connected to the seventh node N7; one end of the eighth resistor 2234 of each power enable control unit 223 is electrically connected to the seventh node N7, and the other end is grounded; the base of the third triode 2236 of each power enable control unit 223 is electrically connected to the seventh node N7, the collector is electrically connected to the second node N2, and the emitter is grounded.

[0096] Exemplarily, continue to refer to Figure 8, when the MCU enable signal MCU_DIS is at a high level, the first triode 2224 is in the conducting state, and when the MCU enable signal is at a low level, the first triode 2224 is in the cut-off state; when the power supply enable signal SS1 is at a high level, the second triode 2235 and the third triode 2236 in the power supply enable control unit 223 receiving this power supply enable signal SS1 are in the cut-off state, and when the power supply enable signal SS1 is at a low level, the second triode 2235 and the third triode 2236 in the power supply enable control unit 223 receiving this power supply enable signal SS1 are in the conducting state. Similarly, different high and low levels of the output of the power supply enable signal SS2 can make the second triode 2235 and the third triode 2236 in the power supply enable control unit 223 receiving this power supply enable signal SS2 have similar cut-off states or conducting states, which will not be elaborated here one by one. Thus, when one of the first triode 2224 and the third triode 2236 is in the conducting state, the output enable signal EN is at a low level, and the enable circuit 22 prohibits the peripheral circuit 50 from working. When both the first triode 2224 and the third triode 2236 are in the cut-off state, the output enable signal EN is at a high level, allowing the safety-related chips in the enable circuit 22 to work properly to achieve the normal operation of the entire enable circuit 22.

[0097] Figure 9 It is a schematic structural diagram of another power management system of a vehicle controller provided according to an embodiment of the present invention. Optionally, the power management system further includes a clamping circuit 90; the clamping circuit 90 is electrically connected between the MCU power signal output terminal of one power management module 30 and the peripheral power signal output terminal of another power management module 30; the clamping circuit 90 is used to clamp the peripheral power signal output by the peripheral power signal output terminal of another power management module 30 according to the MCU power signal output by the MCU power signal output terminal of one power management module 30.

[0098] Specifically, the clamping circuit 90 is arranged at the position between the MCU power signal output terminal of one power management module 30 and the peripheral power signal output terminal of another power management module 30, so that the power signals output by the two power management modules 30 are clamped to each other. The clamping circuit 90 is essentially a Schottky diode. When the MCU power signal VDD5_1 output by one of the power management modules 30 is undervoltage or no voltage is output, under the action of the clamping circuit 90, the peripheral power signal VDD5_2 of another power management module 30 is also pulled down.

[0099] The overall working principle of the power management system of the vehicle controller provided by the embodiment of the present invention is exemplarily described below.

[0100] Exemplarily, continue to refer to Figure 9 When the key switch signal processing circuit 70 receives the key switch signal and determines that the key switch signal is an ON signal, the key switch signal processing circuit 70 can transmit the processed key switch signal to each power management module 30, the MCU module 10, and the power supply switch circuit 80 respectively. Under the action of receiving the key switch signal and the power supply voltage provided by the battery, the power supply switch circuit 80 is smoothly turned on to enable the power supply switch circuit 80 to provide a power signal for each power management module 30. Each power management module 30 starts initialization and power-on to ensure that the power chips inside each power management module 30 can operate normally. The process of communication and interaction between each power management module 30 and the MCU module 10 is achieved through the SPI communication port. Each power management module 30 can also transmit corresponding power enable signals and power reset signals to the hardware security circuit 20, and the MCU module 10 can also transmit corresponding enable signals and MCU reset signals to the hardware security circuit 20 to enable or reset the peripheral circuit 50.

[0101] Furthermore, the power-on process of the power management system can be specifically as follows: When the key switch is closed, the power supply switch circuit 80 is sucked in accordingly, and the power of the power signal transmitted by the battery is introduced into the VS1 pin of each power management module 30. When the power of the power signal at the VS1 pin exceeds the preset high threshold voltage VPD,hi, the power-on reset signal inside each power management module 30 is pulled high, and the power management system enters the initialization mode. The 6V power supplies VDD6_1 and VDD6_2 in each power management module 30 start to be powered on first. When the voltage sampled back at the FB pin exceeds the reset threshold low limit V RT,VDD6,low , VDD5_1 and VDD5_2 start to be powered on. When VDD5_1 and VDD5_2 exceed the reset threshold low limit V RT,VDD5,low , V5AD_1 and V5AD_2 start to be powered on. At this time, the reset delay timer Timer RD in each power management module starts timing to record the reset delay time. The reset delay time can be programmed and configured. Exemplarily, it can be set to 10 ms. When the countdown of the reset delay timer ends, the RESET1 and RESET2 signals in each power management module 30 are pulled high, and the MCU module 10 can configure each power management module 30 through SPI. When the power signals of V5AD_1 and V5AD_2 exceed the voltage V RT,VAD,low of the reset threshold low limit, V5COM_1 and V5COM_2 start to be powered on. When the power signals of V5COM_1 and V5COM_2 exceed the reset threshold low limit V RT,VCOM,lowWhen powered on, 5VSS1, 5VSS2, 5VSS3, and 5VSS4 start to power up and finally complete the power-up. When the hardware reset signals RESET1 and RESET2 in each power management module 30 are pulled high, the initialization timer starts timing, and the power chip needs to complete the information interaction with the MCU module before the initialization timer overflows (600 ms).

[0102] An embodiment of the present invention also provides a vehicle, which at least includes a storage battery, a key switch, and a battery management system of any vehicle controller in the embodiment of the present invention; the storage battery is used to provide a power signal, and the key switch is used to provide a key switch signal. It has the corresponding functional modules and beneficial effects of the battery management system.

[0103] It should be understood that various forms of the processes shown above can be used, reordering, adding, or deleting steps. For example, the steps described in the present invention can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved, and no limitations are imposed herein.

[0104] The above specific embodiments do not constitute a limitation to the protection scope of the present invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A power management system for a vehicle controller, characterized in that, Comprising: An MCU module, a hardware security circuit, and two power management modules; Each of the power management modules is configured to output a core power signal when the key switch signal of the vehicle is an ON signal; one of the power management modules is configured to provide an MCU power signal to the MCU module; the other power management module is configured to provide a peripheral power signal; Each of the power management modules is further configured to provide a power reset signal to the hardware security circuit when the core power signal reaches a preset core power voltage, and control the working state of the vehicle controller through the hardware security circuit; The MCU module is configured to perform information interaction with the power management module when the MCU power signal reaches a preset MCU power voltage and the power reset signal reaches a preset power reset voltage; The hardware security circuit is configured to control the reset of the vehicle controller according to the power reset signal; The MCU module is further configured to control the MCU enable signal provided to the hardware security circuit according to the interaction result of the information interaction with the power management module; Each of the power management modules is further configured to control the power enable signal provided to the hardware security circuit according to the interaction result of the information interaction with the MCU module; The hardware security circuit is further configured to control whether the peripheral circuit is enabled according to the MCU enable signal and the power enable signal; 2. The power management system of the vehicle controller according to claim 1, characterized in that, Each of the power management modules is further configured to provide a communication power signal to the communication module when the core power signal reaches the preset core power voltage; 3. The power management system of the vehicle controller according to claim 2, characterized in that, Each of the power management modules is further configured to provide a sensor power signal to the external sensor when the communication power signal reaches a preset communication power voltage; 4. The power management system of the vehicle controller according to claim 1, characterized in that, Each of the power management modules is further configured to perform a delay timing before providing the power reset signal to the hardware security circuit, and provide the power reset signal to the hardware security circuit when the delay time reaches a preset delay time and the core power signal reaches the preset core power voltage; 5. The power management system of the vehicle controller according to claim 1, wherein The information interaction between each of the power management modules and the MCU module includes: When each of the power management modules is initialized, it performs information interaction with the MCU module, determines the interaction result of the information interaction with the MCU module before the initialization timing reaches a preset initialization time, and enters a power-on success state when the interaction result meets the condition of successful interaction, and provides a valid signal of the power enable signal to the hardware security circuit; 6. The power management system of the vehicle controller according to claim 5, wherein The MCU module includes an SPI communication terminal of the MCU and an MCU error monitoring signal sending terminal; the power management module includes a power management SPI communication terminal and an error monitoring signal receiving terminal; The conditions for successful interaction include: The SPI communication terminal of the MCU and the power management SPI communication terminal complete an effective SPI communication; The SPI communication terminal of the MCU sends a valid watchdog signal to the power management SPI communication terminal; the error monitoring signal receiving terminal receives a valid signal sent by the MCU error monitoring signal sending terminal; 7. The power management system of the vehicle controller according to claim 1, characterized in that, Further comprising: A key switch signal processing circuit and a power supply switch circuit; The key switch signal processing circuit is used to process the key switch signal of the vehicle and then provide it to the power supply switch circuit, the power management module, and the MCU module respectively; The power supply switch circuit is used to control the power signal provided by the vehicle's battery to the power management module according to the key switch signal; Both the power management module and the MCU module are used to judge whether the key switch signal is an ON signal according to the key switch signal.

8. The power management system of the vehicle controller according to claim 7, wherein The power supply switch circuit includes a switch control circuit, a charge pump circuit, a voltage monitoring circuit, and a power supply switch; The voltage monitoring circuit is used to monitor the power signal provided to the power management module and feedback the monitoring signal of the power signal to the switch control circuit; The charge pump circuit is used to output an enabling voltage signal to the switch control circuit according to the power signal provided to the power management module; The switch control circuit is used to control the on-off state of the power supply switch according to the monitoring signal of the power signal, the enabling voltage signal, and the key switch signal; The power supply switch is used to control the power signal provided by the vehicle's battery to the power management module.

9. The power management system of the vehicle controller according to claim 8, characterized in that, The power supply switch circuit further includes a power filter circuit; The power filter circuit is used to filter the power signal output to the power management module via the power supply switch.

10. The power management system of the vehicle controller according to claim 7, characterized in that, The key switch signal processing circuit includes an anti-reverse unit, a voltage dividing unit, and a switch signal filtering unit; The key switch signal is provided to the power management module, the MCU module, and the power supply switch circuit respectively after passing through the anti-reverse unit, the voltage dividing unit, and the switch signal filtering unit.

11. The power management system of the vehicle controller according to claim 1, characterized in that, The hardware security circuit includes a reset circuit and an enabling circuit; The reset circuit is used to control the reset of the vehicle controller according to the power reset signal, the MCU power signal, and the peripheral power signal; The enabling circuit is used to control the enabling of the peripheral circuit according to the MCU enabling signal and the power enabling signal.

12. The power management system of the vehicle controller according to claim 11, characterized in that, The reset circuit includes a first diode and two reset units corresponding to the two power management modules one by one; The first diode is electrically connected between the power reset signal output terminals of the two power management modules; Each reset unit includes a first resistor and a first capacitor; one end of the first resistor of one of the reset units is electrically connected to the MCU power signal output terminal of one of the power management modules; one end of the first resistor of the other reset unit is electrically connected to the peripheral power signal output terminal of the other power management module; the other ends of the first resistors of each reset unit are electrically connected to the power reset signal output terminals of each power management module at a first node; One end of the first capacitor of each reset unit is electrically connected to the first node, and the other end is grounded; The reset signal receiving end of the peripheral circuit is electrically connected to the first node.

13. The power management system of the vehicle controller according to claim 11, wherein, The enabling circuit includes a pull-up unit, an MCU enabling control unit, and a power enabling control unit corresponding to each of the two power management modules; One end of the pull-up unit is electrically connected to the MCU power signal output end of any one of the power management modules, and the other end is electrically connected to the peripheral circuit at a second node; The MCU enabling control unit includes a second resistor, a third resistor, a fourth resistor, and a first triode; one end of the second resistor is electrically connected to the MCU power signal output end of the power management module, and the other end is connected to the MCU enabling signal output end of the MCU module at a third node; one end of the third resistor is electrically connected to the third node, and the other end is electrically connected to a fourth node; one end of the fourth resistor is electrically connected to the fourth node, and the other end is grounded; the base of the first triode is electrically connected to the fourth node, the collector is electrically connected to the second node, and the emitter is grounded; Each power enabling control unit includes a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a second triode, and a third triode; one end of the fifth resistor is electrically connected to the power enabling signal output end of the power management module, and the other end is electrically connected to a fifth node; one end of the sixth resistor of one of the power enabling control units is electrically connected to the MCU power signal output end of one of the power management modules; the other end of the sixth resistor of the other power enabling control unit is electrically connected to the peripheral power signal output end of the other power management module; the other ends of the sixth resistors of each power enabling control unit are electrically connected to the fifth node; The base of the second triode of each power enabling control unit is electrically connected to the fifth node, and the collector is electrically connected to a sixth node; the emitter of the second triode of one of the power enabling control units is electrically connected to the MCU power signal output end of one of the power management modules; the emitter of the second triode of the other power enabling control unit is electrically connected to the peripheral power signal output end of the other power management module; One end of the seventh resistor of each power enabling control unit is electrically connected to the sixth node, and the other end is electrically connected to a seventh node; One end of the eighth resistor of each power enabling control unit is electrically connected to the seventh node, and the other end is grounded; the base of the third triode of each power enabling control unit is electrically connected to the seventh node, the collector is electrically connected to the second node, and the emitter is grounded.

14. The power management system of the vehicle controller according to claim 1, characterized in that, It further includes a clamping circuit; The clamping circuit is electrically connected between the MCU power signal output end of one of the power management modules and the peripheral power signal output end of the other power management module; the clamping circuit is used to clamp the peripheral power signal output by the peripheral power signal output end of the other power management module according to the MCU power signal output by the MCU power signal output end of one of the power management modules.

15. A vehicle, characterized in that, It at least includes: a storage battery, a key switch, and the power management system of the vehicle controller according to any one of claims 1-14; The storage battery is used to provide a power signal; The key switch is used to provide a key switch signal.

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