Computing device, power supply thereof and motor vehicle

Abstract

The embodiment of the invention provides computing equipment, a power supply thereof and a motor vehicle, the power supply of the computing equipment provides standby voltage through a first power supply module, and enables a second power supply module to output direct current based on direct current input (namely input of a direct current power supply) through a control circuit; therefore, when the input power supply provided by the outside is DC input, the power supply of the computing device does not need to use an inverter to carry out conversion from DC to AC, so that the electric energy loss caused by the inverter in the DC-AC conversion process is reduced, and the working efficiency of the power supply of the computing device is improved. In addition, enabling of the second power supply module based on the starting-up signal and the standby voltage is achieved through the control circuit comprising the first control branch and the second control branch, and the control circuit has the advantages of being simple, convenient, easy to implement and capable of being achieved at low cost.

Description

Technical Field

[0001] The embodiments of the present specification relate to the field of electronic circuit technology, and more specifically, to a computing device and a power supply thereof, and a motor vehicle. Background Art

[0002] With the continuous advancement of technology, the application scenarios of computing devices with computing capabilities are gradually expanding, which also puts higher requirements on the power supply that drives the computing devices.

[0003] Currently, in some application scenarios, the working efficiency of the power supply of computing devices is low, resulting in waste of electrical energy. Summary of the invention

[0004] Multiple embodiments of the present specification provide a computing device and a power supply thereof, and a motor vehicle, so as to achieve the purpose of improving the efficiency of the power supply of the computing device.

[0005] In a first aspect, an embodiment of the present specification provides a power supply for a computing device, comprising: a first power supply module, a control circuit, and a second power supply module; wherein:

[0006] The first power supply module is used to receive an input of a DC power supply and output a standby voltage;

[0007] The control circuit comprises: a first control branch and a second control branch, the first control branch being used to receive a power-on signal and the standby voltage, and transmitting a first enable signal to the second control branch based on the standby voltage when the power-on signal is in a first state;

[0008] The second control branch is used to receive an input of the DC power supply, and when receiving the first enable signal, output a second enable signal to the second power supply module based on the input of the DC power supply;

[0009] The second power supply module is used to receive the input of the DC power supply and output DC power upon receiving the second enable signal, wherein the DC power has a plurality of voltages with different amplitudes.

[0010] In a second aspect, an implementation of this specification provides a computing device, including: a power-on control module and a power supply of the computing device as described above;

[0011] The power-on control module includes a first state. When the power-on control module is in the first state, a power-on signal in the first state is provided to the power supply of the computing device.

[0012] In a third aspect, an embodiment of the present specification provides a motor vehicle, comprising: a computing device as described above.

[0013] The multiple implementation methods provided in this specification provide a standby voltage through a first power supply module, and enable a second power supply module to output DC power based on a DC input (i.e., the input of a DC power supply) through a control circuit, so that when the input power of the computing device provided by the outside world is a DC input, there is no need to use an inverter to convert DC to AC, thereby reducing the power loss caused by the inverter during the DC to AC conversion process and improving the working efficiency of the power supply of the computing device.

[0014] In addition, the enabling of the second power supply module based on the power-on signal and the standby voltage is achieved through a control circuit including the first control branch and the second control branch, which is simple, easy and can be realized at a low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of a motor vehicle provided for one embodiment of this specification;

[0016] Figure 2 A schematic diagram of a power supply structure of a computing device provided for one embodiment of the present specification;

[0017] Figure 3 A schematic diagram of a control circuit provided for one embodiment of this specification;

[0018] Figure 4 A structural schematic diagram of a control circuit provided for another embodiment of this specification;

[0019] Figure 5 A schematic diagram of a power supply structure of a computing device provided in accordance with another embodiment of the present specification;

[0020] Figure 6 A schematic diagram of a power supply structure of a computing device provided in yet another embodiment of the present specification;

[0021] Figure 7 A schematic diagram of the structure of a computing device provided for one embodiment of the present specification. DETAILED DESCRIPTION

[0022] Unless otherwise defined, the technical terms or scientific terms used in the embodiments of this specification shall have the common meanings understood by persons with ordinary skills in the field to which this specification belongs. The words "first", "second" and similar words used in the embodiments of this specification do not indicate any order, quantity or importance, but are only used to avoid confusion of constituent elements.

[0023] Unless the context requires otherwise, throughout the specification, "plurality" means "at least two", and "including" is interpreted as an open, inclusive meaning, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples" or "some examples" are intended to indicate that a particular feature, structure, material or characteristic associated with the embodiment or example is included in at least one embodiment or example of the specification. The schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0024] The following will be combined with the drawings in the embodiments of this specification to clearly and completely describe the technical solutions in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this specification.

[0025] Overview

[0026] A computing device may refer to a device having computing capabilities such as numerical calculations and logical calculations. In some embodiments, the electronic device may also have a data storage function. For example, a computing device may be a computer (e.g., a desktop computer, a laptop computer, etc.) and a server (e.g., a cloud server, a distributed server, a computing device in a vehicle), etc.

[0027] Due to the complex structure and functions of computing devices, different types of devices need to be set up inside to meet the needs of different functions. For example, a GPU (Graphics Processing Unit) can be set to meet the processing requirements of highly parallel computing tasks such as graphics and images; a hard disk and memory can be set to meet the needs of data storage; a CPU (Central Processing Unit) can be set to meet the needs of instruction and data processing and coordinated control of computing devices; and a motherboard can be set to meet the needs of overall coordination of components such as CPU, GPU, memory and hard disk. The voltage and power required for these devices to work may be different. Therefore, it is necessary to design a dedicated computing device power supply in the computing device to meet the working requirements of various devices. In order to meet the working requirements of computing devices, the ATX (Advanced Technology eXtended) protocol is designed to standardize the power supply design of computing devices, so that power supplies that meet the ATX protocol can be applied to various computing devices.

[0028] Since computing devices have evolved from devices such as desktop computers that do not require mobility and have fixed workplaces, desktop computers generally have an AC power supply interface in their workplaces, and the power supply of computing devices is also designed to be a power supply based on AC input, that is, the power supply of computing devices can convert AC input into DC power that meets a certain protocol and output it to various components of the computing devices to meet the working requirements of various components in various computing devices. However, with the continuous development of computing devices, the application scenarios of computing devices are constantly expanding. Some smart vehicles have also realized the application of computing devices in vehicles by integrating computing devices, etc., and the computing devices can meet the data computing requirements of functions such as IoT control and / or unmanned driving of smart vehicles. However, in computing devices in these application scenarios, since the computing devices generally do not have AC input conditions in their workplaces, when the power supply of the computing devices works in these scenarios, it can only rely on the inverter to realize the conversion of DC input (for example, the DC voltage provided by the battery of the vehicle) to AC input, and then use the converted AC input as the input of the power supply of the computing device. In this process, due to the conversion efficiency limitation of the inverter, a large amount of power consumption will be caused in the process of converting DC input to AC input, resulting in low working efficiency of the power supply of the computing device, resulting in waste of power.

[0029] In order to solve this problem, the inventors have found through research that a power supply for a computing device based on a DC power supply input and output having a plurality of DC voltages of different amplitudes can be designed to meet the working requirements of the computing device in a mobile scenario (such as a smart vehicle). Specifically, a standby voltage is provided by a first power supply module, and a control circuit is used to enable the second power supply module to output DC power based on a DC input (i.e., the input of a DC power supply), so that when the input power provided by the outside world is a DC input, the power supply of the computing device does not need to use an inverter to convert DC to AC, thereby reducing the power loss caused by the inverter in the process of converting DC to AC, and improving the working efficiency of the power supply of the computing device. In addition, the enabling of the second power supply module based on the power-on signal and the standby voltage is realized by a control circuit including a first control branch and a second control branch, which is simple, easy to implement and can be realized at low cost.

[0030] The power supply of the computing device provided in the embodiments of this specification will be exemplarily described below in conjunction with the accompanying drawings.

[0031] Example scenario

[0032] refer to Figure 1 , Figure 1 An application scenario of a computing device in a vehicle 110 is shown. Figure 1The vehicle 110 is shown by taking a truck as an example. Those skilled in the art will appreciate that the vehicle 110 may also be any vehicle or transportation tool such as a car or a bus.

[0033] The vehicle 110 may include various vehicle systems or devices, such as a drive system 142, a sensor system 144, a control system 146, a computing device 150, and a communication system 152. The vehicle 110 may include more or fewer systems or devices, and each system or device may include multiple units. Further, each system and unit of the vehicle 110 may be interconnected. For example, the computing device 150 can communicate data with one or more units in the drive system 142, the sensor system 144, the control system 146, and the communication system 152.

[0034] The vehicle 110 may include an autonomous driving (also referred to as unmanned driving) system, so that it can operate in full or in part in an autonomous driving mode. In this sense, the vehicle 110 is also referred to as an autonomous driving vehicle. The vehicle 110 can control itself (or the vehicle can be controlled by the autonomous driving system) in the autonomous driving mode. For example, the vehicle 110 can determine the current state of the vehicle and the current state of the environment in which the vehicle is located, determine the predicted behavior of at least one other vehicle in the environment, determine the trust level corresponding to the possibility of the at least one other vehicle performing the predicted behavior, and control the vehicle 110 itself based on the determined information. When in the autonomous driving mode, the vehicle 110 can operate without human interaction. The autonomous driving system of the vehicle 110 may include, for example, a sensor system 144 and a computing device 150.

[0035] The drive system 142 may include a plurality of operable components (or units) that provide kinetic energy to the vehicle 110. In one embodiment, the drive system 142 may include an engine or motor, wheels, a transmission, an electronic system, and a power source (or power source).

[0036] Sensor system 144 may include multiple sensor subsystems (although Figure 1Only one sensor subsystem is shown in the figure). Each sensor subsystem includes one or more sensors that are used to sense the condition information and surrounding environment information of the vehicle 110 in various driving environments. Each sensor subsystem may include one or more of an inertial measurement unit (IMU), a global navigation satellite system (GNSS) transceiver (such as a global positioning system (GPS) transceiver), a radio detection and ranging device (RADAR, referred to as radar), a laser detection and ranging system (LIDAR, referred to as laser radar), an acoustic sensor, an ultrasonic sensor, and an image capture device (such as a camera). The one or more sensors included in each sensor subsystem can be driven individually or collectively to update the position, direction, or both of the one or more sensors.

[0037] The individual sensors may be coupled or secured to the vehicle using nails, screws, tape, adhesives, welding, soldering, bolts, or similar materials. The sensors may be coupled or secured to a luggage rack or bracket along the top or bottom of the vehicle. The sensors may be coupled or secured to the top, side, front, or rear of the vehicle. The sensors may be attached or secured to the front grille, fender, or reflector of the vehicle. The sensors may be coupled or secured to any exterior portion of the vehicle.

[0038] In some embodiments, the sensor system 144 may include two sensor subsystems for achieving redundancy, wherein one sensor subsystem is a sensor master system and the other sensor subsystem is a redundancy of the sensor master system, also referred to as a sensor slave system.

[0039] In some embodiments, in addition to the sensor master system and the sensor slave system, the sensor system 144 also includes a sensor backup system to serve as redundancy for the sensor master system and the sensor slave system. The sensor slave system may have fewer sensors than the sensor master system, and similarly, the sensor backup system may have fewer sensors than the sensor slave system.

[0040] The control system 146 is used to control the operation of the vehicle 110 and its components (or units). Accordingly, the control system 146 may include various units, such as a steering unit, a power control unit, a braking unit, and a navigation unit. The steering unit may be a combination of machinery for adjusting the forward direction of the vehicle 110. The steering unit may, for example, include a steering motor, which steers the steering wheel of the vehicle by manipulating a steering mechanism including a steering shaft and a steering gear. The power control unit may be used to control the operating speed of the engine, thereby controlling the speed of the vehicle 110. The power control unit may, for example, include an engine actuator for changing the operating state of the engine of the vehicle. An example of an engine is an internal combustion engine for adjusting the throttle of the intake amount, in which case the engine actuator may include a throttle actuator for changing the opening of the throttle. By controlling the engine actuator, the driving force of the vehicle can be controlled to change the acceleration state. The braking unit may include a combination of machinery for decelerating the vehicle 110. The braking unit may use friction to decelerate the vehicle in a standard manner. The braking unit may include a brake actuator that can adjust the friction between the brake pads of the vehicle and the brake discs fixed to the wheels, thereby generating a braking torque to hinder the movement of the vehicle. The navigation unit may be any system that determines a driving path or route for the vehicle 110. The navigation unit may also dynamically update the driving path while the vehicle 110 is moving.

[0041] The communication system 152 may include one or more communication devices to provide the vehicle 110 with a way to communicate with one or more devices or other vehicles around it. In an exemplary embodiment, each communication device of the communication system 152 can communicate with one or more devices directly or through a communication network. The communication system 152 can be, for example, a wireless communication system. For example, the communication device of the communication system can use 3G cellular communication (e.g., CDMA, EVDO, GSM / GPRS) or 4G cellular communication (e.g., WiMAX or LTE), and can also use 5G cellular communication.

[0042] The computing device 150 may include one or more computing devices (and / or control devices) for controlling some or all functions of the vehicle 110, each computing device (or control device) including at least one processor (which may include at least one microprocessor), and the processor executes processing instructions (i.e., machine executable instructions) stored in a non-volatile computer-readable medium (e.g., a data storage device or memory). In some embodiments, the memory may contain processing instructions (e.g., program logic) executed by the processor to implement various functions of the vehicle 110. One or more of the computing devices (and / or control devices) may include an autonomous driving control unit. The autonomous driving control unit may be used to identify, evaluate, and avoid or cross potential obstacles in the environment where the vehicle 110 is located. Generally, the autonomous driving control unit may be used to control the vehicle 110 without a driver, or to assist the driver in controlling the vehicle. In some embodiments, the autonomous driving control unit is used to combine data from sensors, such as data from a GPS transceiver, radar data, LIDAR data, camera data, and data from other vehicle systems to determine the driving path or trajectory of the vehicle 110. The autonomous driving control unit may be activated to enable the vehicle 110 to be driven in an autonomous driving mode.

[0043] In some embodiments, the computing device 150 includes at least two computing devices, one computing device receives data from the sensor master system (the corresponding computing device is also referred to as the master computing device), and the other computing device receives data from the sensor slave system as a redundancy of the master computing device (the corresponding computing device is also referred to as the slave computing device). In some embodiments, in addition to the master computing device and the slave computing device, the computing device 150 also includes a backup computing device as a redundancy, and the backup computing device receives data from the sensor backup system. The master computing device, the slave computing device, and the backup computing device may have the same computing resources or different computing resources. For example, the slave computing device may have fewer computing resources than the master computing device, and the backup computing device has fewer computing resources than the slave computing device.

[0044] In some embodiments, the computing device of the computing device 150 may be a computer or a server, and the control device of the computing device 150 may include an electronic control unit (ECU) or a vehicle controller unit (VCU).

[0045] although Figure 1The autonomous driving control unit is shown as being separate from the processor and memory, but it should be understood that in some embodiments, some or all of the functions of the autonomous driving control unit may be implemented using program code instructions residing in one or more memories (or data storage devices) and executed by one or more processors, and the autonomous driving control unit may be implemented using the same processor and / or memory (or data storage device) in some cases. In some embodiments, the autonomous driving control unit may be implemented at least in part using various dedicated circuit logic, various processors, various field programmable gate arrays ("FPGA"), various application-specific integrated circuits ("ASIC"), various real-time controllers, and hardware.

[0046] Example Power Supply

[0047] One embodiment of the present specification provides a power supply for a computing device, such as Figure 2 As shown, it includes: a first power module 10, a control circuit 20 and a second power module 30; wherein,

[0048] The first power supply module 10 is used to receive a DC power input and output a standby voltage;

[0049] The control circuit 20 includes: a first control branch 21 and a second control branch 22, wherein the first control branch 21 is used to receive a power-on signal and the standby voltage, and when the power-on signal is in a first state, transmit a first enable signal to the second control branch 22 based on the standby voltage;

[0050] The second control branch 22 is used to receive the input of the DC power supply, and when receiving the first enable signal, output a second enable signal to the second power supply module 30 based on the input of the DC power supply;

[0051] The second power supply module 30 is used to receive the input of the DC power supply and output DC power upon receiving the second enable signal. The DC power has a plurality of voltages with different amplitudes.

[0052] A DC power supply may refer to a power supply that provides working power to a power supply of a computing device, or a power supply that drives the power supply of a computing device to work. The input of the DC power supply may refer to a signal output by the DC power supply to the power supply of the computing device. In some embodiments, when the power supply of the computing device is applied to a vehicle, the DC power supply may refer to a battery of the vehicle, and the input of the DC power supply may be 24V DC.

[0053] The standby voltage may refer to the voltage that the power supply of the computing device will continuously output when the computing device is in the shutdown state and the power-on state. That is, after the power supply of the computing device receives the input of the DC power supply, it will output the standby voltage through the first power supply module 10. In some embodiments, the standby voltage may be a DC voltage of 5V, in which case the standby voltage may be expressed as 5VSB. In an optional embodiment, the first power supply module 10 may be a VICOR power supply module of model DCM3623T36G06A8T70. Of course, the first power supply module 10 may be a VICOR power supply module only as an example embodiment. In other embodiments of the present specification, the first power supply module 10 may also be other types of power supply modules, and the present specification does not limit this.

[0054] Since the first power module 10 needs to output the standby voltage after receiving the input of the DC power supply, in some embodiments, the signal enabling the first power module 10 to work may also be the input of the DC power supply.

[0055] The control circuit 20 may include two branches (i.e., a first control branch 21 and a second control branch 22), and the first control branch 21 is used to control the input branch of the DC power supply (i.e., the second control branch 22) using the standby voltage and the power-on signal. In this way, the control circuit 20 can achieve the purpose of controlling the output of the first enable signal according to the power-on signal based on simple electrical components, thereby achieving the enable control of the second power module 30. The entire control logic is simple, and there is no need to introduce complex controllers and other components, which is simple, easy to implement, and can be implemented at a low cost.

[0056] The second power supply module 30 may be a power supply module that outputs other power supply signals required by the computing device in addition to the standby voltage. In some embodiments, the second power supply module 30 may, for example, include multiple VICOR power supply modules, and the multiple VICOR power supply modules in the second power supply module 30 may each output voltages of different amplitudes upon receiving the second enable signal. For example, in a specific embodiment, the second power supply module 30 may be used to output DC voltages of amplitudes such as 5V, 3.3V, and 12V to meet the ATX protocol of the power supply of the computing device. Similarly, the second power supply module 30 may include multiple VICOR power supply modules only as an example embodiment. In other embodiments of this specification, the second power supply module 30 may also include other types of power supply modules, which is not limited in this specification.

[0057] In this embodiment, the power supply of the computing device provides a standby voltage through the first power supply module 10, and enables the second power supply module 30 to output DC power based on DC input (i.e., the input of DC power supply) through the control circuit 20, so that when the input power of the computing device provided by the outside world is DC input, there is no need to use an inverter to convert DC to AC, which reduces the power loss caused by the inverter during the DC to AC conversion process and improves the working efficiency of the power supply of the computing device.

[0058] In order to reduce the interference or damage of the fluctuation of the DC power supply to the components in the control circuit 20, in some embodiments, reference Figure 3 and Figure 4 , the first control branch 21 includes: an isolation control unit 211;

[0059] The isolation control unit 211 includes a first branch of an isolation device and a first resistor R1 connected in parallel with the first branch of the isolation device;

[0060] One end of the isolation control unit 211 is used to receive the standby voltage, and the first branch of the isolation device is used to send the first enable signal to the second branch of the isolation device based on the standby voltage when the power-on signal is in the first state;

[0061] The second control branch 22 includes: a second branch of the isolation device, and the second branch of the isolation device is configured to be turned on when receiving the first enable signal.

[0062] The isolation device may refer to a device with an isolation protection function, for example, a device that isolates two branches operating based on voltages of different amplitudes and can control one branch based on the other branch.

[0063] In this embodiment, the first branch and the second branch of the isolation device are used to control the input branch of the DC power supply (i.e., the second control branch 22) using the standby voltage and the power-on signal. The isolation device can be specifically as follows: Figure 3 The optical coupler (OC) shown in FIG. Figure 4 The combination of the photodiode VD and the switching transistor VT is shown. Figure 3 In the embodiment, the optical coupler may include an infrared light emitting diode U11 and a photosensitive device U12, wherein the infrared light emitting diode U11 may be used as the first branch of the isolation device, and the photosensitive device U12 may be used as the second branch. When the branch where the infrared light emitting diode U11 is located is turned on, the infrared light emitting diode U11 emits infrared light, and the photosensitive device U12 turns on the branch where it is located after receiving the infrared light, thereby controlling the second control branch 22. As an isolation device, the optical coupler has the characteristics of excellent isolation protection performance. Figure 4 Similarly, the photodiode VD can emit light after the branch where it is located is turned on, and the switch transistor VT can be turned on after receiving the light signal emitted by the photodiode VD, thereby realizing the control of the second control branch 22. Of course, Figure 3 and Figure 4 The structures of two feasible isolation devices are shown. In some implementations, the isolation device may also be other types of devices, such as relays, etc., which is not limited in this specification.

[0064] In this embodiment, in order to avoid the fluctuation of the input of the DC power supply and damage to the control circuit 20 (especially the isolation device), a first resistor R1 is connected in parallel to the first branch of the isolation device, and the first branch is protected by current limiting through the first resistor R1. Especially in application scenarios such as automobiles, in the case of sudden acceleration of the automobile, engine start and stop, damage to other equipment connected to the power battery, and power mutation, interference to the DC power supply may occur, resulting in a sudden change in the input of the DC power supply. Therefore, it is necessary to effectively protect the first branch of the isolation device by setting the first resistor R1.

[0065] Still reference Figure 3 or Figure 4 , in order to be compatible with the working logic of the power supply of the existing computing device and reduce the modification of the logic of the power-on signal, so that the power supply of the computing device can be applied to more existing application scenarios, in some embodiments, the first control branch 21 further includes: a first switch element Q1 and a second switch element Q2;

[0066] The control end of the first switch element Q1 is used to receive the power-on signal, the first end of the first switch element Q1 is electrically connected to the control end of the second switch element Q2, the first end of the first switch element Q1 is used to receive the standby voltage, and the second end of the first switch element Q1 is electrically connected to the ground end;

[0067] A first end of the second switch element Q2 is electrically connected to an input end of the isolation control unit 211 away from the standby voltage, and a second end of the second switch element Q2 is electrically connected to a ground end.

[0068] In this embodiment, in the shutdown state, the control end of the first switch element Q1 can be suspended (i.e., no power-on signal is received), and the control end of the first switch element Q1 can also receive a power-on signal of the second state (e.g., a low level). At this time, the first switch element Q1 is turned off, the potential of the first end of the first switch element Q1 can be a standby voltage potential, and the potential of the control end of the second switch element Q2 is also a standby voltage potential. At this time, the second switch element Q2 is turned on. Since the second switch element Q2 is turned on, the branch where the first branch of the isolation device is located is turned on, and the first branch controls the second branch to be turned on. In the second control branch 22, when the second branch is turned on, the input of the DC power supply can be connected to the ground terminal, so that the second control branch 22 does not output the second enable signal.

[0069] In the power-on state, the control end of the first switch element Q1 can receive the power-on signal of the first state. When the control end of the first switch element Q1 receives the power-on signal of the first state, the first switch element Q1 is turned on, the potential of the control end of the second switch element Q2 is the ground potential, and the second switch element Q2 is turned off. At this time, the first branch of the isolation device is turned off, and the second branch is also in the off state because it cannot receive the first enable signal sent by the first branch. At this time, the input of the DC power supply in the second control branch 22 is not directly grounded, and the second enable signal output can be generated based on the input of the DC power supply.

[0070] In this embodiment, the power-on signal may be a signal triggered after a power-on key of the computing device is pressed. In some embodiments, the power-on signal of the first state may be a high level, and the first switch element Q1 and the second switch element Q2 may both be N-type MOS tubes (Metal-Oxide-Semiconductor Field-Effect Transistor). In this way, the control function of the first control branch 21 can be realized by simply cooperating with the switch element and the resistor, isolation device, etc., without introducing control devices such as MCU (Microcontroller Unit, micro control unit), and without changing the generation logic of the power-on signal, which has the characteristics of simple implementation, low cost and high applicability.

[0071] In some embodiments, the first switch element Q1 and the second switch element Q2 are both N-type MOS tubes, the control end of the N-type MOS tube may include a gate, the first end may include a drain, the second end may include a source, and there is a reverse circuit between the control circuit and the second power module. The working state of the control circuit in the shutdown state and the startup state can be described as follows.

[0072] In the power-on state, the control end of the first switch element Q1 can receive a low level, at which time the gate-source voltage of the first switch element Q1 is less than the threshold voltage of the N-type MOS tube, and the first switch element Q1 is turned off; the gate voltage of the second switch element Q2 is the standby voltage, the gate-source voltage of the second switch element Q2 is greater than the threshold voltage of the N-type MOS tube, and the second switch element is turned on; the branch where the first branch of the isolation device is located is turned on, and the second branch is controlled to be turned on. In the second control branch 22, since the second branch is turned on, the signal output end is grounded, and the signal output end outputs a low level. Through the reverse of the reverse circuit, the low level is converted to a high level as a second enable signal output to the second power module, and the second power module is enabled at this time.

[0073] In the shutdown state, the control end of the first switch element Q1 can receive a high level, at which time the gate-source voltage of the first switch element Q1 is greater than the threshold voltage of the N-type MOS tube, and the first switch element Q1 is turned on; the gate of the second switch element Q2 is grounded, the gate voltage is the ground potential, the gate-source voltage of the second switch element Q2 is less than the threshold voltage of the N-type MOS tube, and the second switch element is turned off; the branch where the first branch of the isolation device is located is turned off, and the second branch is turned off. In the second control branch 22, since the second branch is turned off, the signal output end is connected to the input of the DC power supply, and a high level is output. Through the reverse of the reverse circuit, the high level is converted to a low level, and the second power module is not enabled at this time.

[0074] Still reference Figure 3 or Figure 4 In order to prevent voltage fluctuations from damaging the output pin of the second control branch 22 (i.e., the pin outputting the second enable signal, hereinafter referred to as the signal output terminal), in some embodiments, the second control branch 22 includes a voltage clamping device D1 and a signal output terminal EN;

[0075] One end of the voltage clamping device D1 is connected to the signal output terminal EN, and the other end is connected to the ground terminal. The voltage clamping device D1 is used to clamp the signal potential output by the signal output terminal EN below a preset value.

[0076] The voltage clamp device D1 can clamp the potential outputted by the signal output terminal EN below a preset value, thereby avoiding the problem of pin damage caused by input fluctuation of the DC power supply. The preset value can specifically be 12V.

[0077] Optionally, the voltage clamp device D1 may include a transient voltage suppression diode (TVS). The transient voltage suppression diode has the characteristics of fast response speed, small size and high voltage accuracy, which can not only effectively protect the signal output terminal EN, but also help to reduce the overall volume of the control circuit 20. In some embodiments, the model of the transient voltage suppression diode can be SZ1SMA5925BT3G.

[0078] In order to avoid the possible damage to the second control branch 22 caused by the input of the residual DC power supply in the circuit when the second control branch 22 does not output the second enable signal, in some embodiments, still refer to Figure 3 or Figure 4 The second control branch 22 includes a power supply filter unit 221, and the power supply filter unit 221 is used to control the current in the second control branch 22 and to perform filtering and anti-shake processing on the second enable signal.

[0079] In this embodiment, the power filter unit 221 can be provided to achieve the purpose of current limiting and filtering anti-shake. Specifically, the power filter unit 221 can limit the input current (i.e., the input of the DC power supply) of the second control branch 22 to avoid damage to the components in the second control branch 22 (e.g., the isolation components in the second control branch 22) due to fluctuations in the input current. Figure 3 or Figure 4 Taking the control circuit shown as an example, when the isolation device is not turned on, the sixth resistor R6, the seventh resistor R7 and the eighth resistor R8 divide the voltage, and the signal output terminal stably outputs a high level (a second enable signal). When the isolation device is turned on, the eighth resistor R8 and the ninth resistor R9 are connected in parallel, the resistance is lowered, and the signal output terminal stably outputs a low level. The first capacitor C1 and the second capacitor C2 filter the input of the DC power supply to prevent the sudden second enable signal output due to the input jitter of the DC power supply, thereby avoiding problems with the output of the power supply of the computing device.

[0080] In some implementations, the power filter unit 221 may include a filter circuit composed of at least one resistor and at least one capacitor. The filter circuit composed of a resistor and a capacitor has the characteristic of low cost.

[0081] exist Figure 3 and Figure 4In the embodiment, the sixth resistor R6, the seventh resistor R7, the first capacitor C1 and the second capacitor C2 form a filter circuit. The sixth resistor R6 and the seventh resistor R7 are connected in parallel as a resistor unit, and the first capacitor C1 and the second capacitor C2 are connected in parallel as a capacitor unit; one end of the resistor unit is connected to one end of the capacitor unit to receive the input of the DC power supply. The other end of the resistor unit is connected to the signal output terminal EN. The other end of the capacitor unit is grounded.

[0082] exist Figure 3 and Figure 4 In addition to the sixth resistor R6, the seventh resistor R7, the first capacitor C1, the second capacitor C2 and the first resistor R1 mentioned above, an eighth resistor R8 and a ninth resistor R9 are also provided in the second control branch 22, wherein one end of the eighth resistor R8 is connected to the signal output terminal EN, and the other end is grounded; one end of the ninth resistor R9 is connected to the input end of the second branch of the isolation device away from the DC power supply, and the other end is grounded. Among them, the eighth resistor R8 cooperates with the sixth resistor R6 to form a voltage divider circuit to divide the input of the DC power supply. At the same time, since the second enable signal output by the signal output terminal EN drives the control end of the second power supply module 30, when powering on or off, the eighth resistor R8 can prevent the control end of the second power supply module 30 from being in a high impedance state. The ninth resistor R9 can play a role in current limiting, and can prevent the second branch of the isolation device from generating too much current after being turned on.

[0083] In the first control branch 21, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5 and a third capacitor C3 are also provided; wherein one end of the second resistor R2 is used to receive a power-on signal, and the other end is electrically connected to the control end of the first switch element Q1. The third capacitor C3 and the fourth resistor R4 are connected in parallel, and one end of the third capacitor C3 and the fourth resistor R4 is connected to the control end of the first switch element Q1, and the other end is grounded. One end of the third resistor R3 is used to receive a standby voltage, and the other end is electrically connected to the control end of the second switch element Q2.

[0084] Among them, the third resistor R3 can play a role in current limiting, which can prevent the first switch element Q1 from generating too much current after being turned on. The second resistor R2 can play a role in current limiting, protecting the first switch element Q1, and cooperate with the third capacitor C3 to form an RC circuit. The RC circuit can filter and / or smooth the power-on signal. The fourth resistor R4 cooperates with the second resistor R2 to play a voltage divider, and the fourth resistor R4 can prevent the control end of the first switch element Q1 from being in a high-resistance state. The fifth resistor R5 can play a role in current limiting, which can prevent the current generated after the first branch of the isolation device is turned on from being too large. In addition, in Figure 3 and Figure 4 In the diagram, GND indicates ground.

[0085] In order to improve the driving capability of the power supply and meet the driving requirements of high-power computing devices, in one embodiment of this specification, reference is made to Figure 5 The second power supply module 30 includes a first voltage conversion unit 31 and a plurality of second voltage conversion units 32; wherein,

[0086] The first voltage conversion unit 31 is used to receive the input of the DC power supply, and output a first DC power upon receiving the second enable signal, wherein the first DC power has a first voltage and is used to provide a voltage for a control signal of a mainboard of the computing device;

[0087] A plurality of the second voltage conversion units 32 are connected in parallel, and the second voltage conversion unit 32 is used to receive the input of the DC power supply and output a second DC power upon receiving the second enable signal; the second DC power output by the plurality of the second voltage conversion units 32 connected in parallel is superimposed to provide a working voltage for the circuit board of the computing device.

[0088] In this embodiment, by connecting multiple second voltage conversion units 32 in parallel, the second direct current output by the multiple second voltage conversion units 32 can be superimposed to provide a working voltage for the circuit board of the computing device, thereby meeting the working requirements of the high-power computing device. In some embodiments, the second direct current may include a 12V voltage. The first voltage of the first direct current may include 3.3V and 5V voltages.

[0089] In some embodiments, still refer to Figure 5 , the second power supply module 30 further includes: a voltage reversal unit 33;

[0090] The voltage inverting unit 33 is connected in series to an output terminal of the second voltage converting unit 32 , and is used to invert the voltage of the second direct current to obtain and output a third direct current.

[0091] When the second direct current includes a 12 V voltage, the third direct current may include a -12 V voltage. In this embodiment, the third direct current may be obtained based on the second voltage conversion unit 32 through the voltage inverting unit 33 to meet the driving requirements of different types of computing devices and improve the applicability of the power supply of the computing device.

[0092] In a feasible implementation, the first voltage conversion unit 31 may include a VICOR power module with a model number of DCM3623T36G06A8T70 and a VICOR power module with a model number of DCM3623T50M04A2T70. The VICOR power module with a model number of DCM3623T36G06A8T70 is used to convert the input of a DC power supply into a 5V DC voltage output, and the VICOR power module with a model number of DCM3623T50M04A2T70 is used to convert the input of a DC power supply into a 3.3V DC voltage output. The second voltage conversion unit 32 may include a VICOR power module with a model number of DCM3623T50M13C2T00. The voltage inversion unit 33 may include a voltage inversion chip with a model number of LM25576-Q1.

[0093] In some implementations, to improve the stability of the power supply, reference Figure 6 , the power supply of the computing device further includes: an anti-reverse protection module 40;

[0094] The anti-reverse protection module 40 is used to perform anti-reverse processing on the input of the DC power supply and then transmit it to the first power module 10, the control circuit 20 and the second power module 30.

[0095] In this embodiment, the anti-reverse protection module 40 can protect the control circuit 20, the first power module 10 and the second power module 30, thereby preventing the control circuit 20, the first power module 10 and the second power module 30 from being affected by reverse voltage or current, thereby protecting the circuit components from damage or overheating.

[0096] In a feasible implementation, the anti-reverse protection module 40 may be a reverse protection circuit of model LM74700.

[0097] It should be noted that in order to Figure 5 and Figure 6 More clear and concise, Figure 5 and Figure 6 No lines are shown that directly connect the anti-reverse protection module 40 and the various voltage conversion units in the second power supply module 30, but it can be understood that the input of the DC power supply processed by the anti-reverse protection module 40 will also be transmitted to the various voltage conversion units in the second power supply module 30 (i.e., the first voltage conversion unit 31 and the second voltage conversion unit 32).

[0098] Accordingly, the embodiments of this specification also provide a computing device, such as Figure 7 As shown, it includes: a power-on control module and a power supply of the computing device as described in any of the above embodiments;

[0099] The power-on control module includes a first state. When the power-on control module is in the first state, a power-on signal in the first state is provided to the power supply of the computing device.

[0100] The power supply of a computing device can provide direct current to components such as the processor, internal memory, network interface and input device of the computing device to meet the working requirements of each component.

[0101] The computing device includes a processor, a memory, a network interface, and an input device connected via a system bus. The processor of the computing device is used to provide computing and control capabilities. The memory of the central control device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface of the computing device is used to communicate with an external terminal via a network connection. When the computer program is executed by the processor, the method for generating a naming dictionary or the steps in the naming method according to various embodiments of the present specification described in the above embodiments of the present specification is used.

[0102] The processor may include a main processor and may also include a baseband chip, a modem, etc.

[0103] The memory stores a computer program for executing the technical solution of the present invention, and may also store an operating system and other key services. Specifically, the computer program may include a program code, and the program code includes computer operation instructions. More specifically, the memory may include a read-only memory (ROM), other types of static storage devices that can store static information and instructions, a random access memory (RAM), other types of dynamic storage devices that can store information and instructions, a disk storage, a flash, and the like.

[0104] The processor may be a general-purpose processor, such as a general-purpose central processing unit (CPU), a microprocessor, etc., or an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the scheme of the present invention. It may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component.

[0105] The input device may include a device for receiving data and information input by a user, such as a keyboard, a mouse, a camera, a scanner, a light pen, a voice input device, a touch screen, a pedometer, or a gravity sensor.

[0106] Output devices may include means that allow information to be output to a user, such as display screens, printers, speakers, etc.

[0107] The communication interface may include using any transceiver or the like to communicate with other devices or communication networks, such as Ethernet, Radio Access Network (RAN), Wireless Local Area Network (WLAN), etc.

[0108] The processor executes the computer program stored in the memory and calls other devices, which can be used to implement any method for generating a naming dictionary or each step of the naming method provided in the above-mentioned embodiments of the present application.

[0109] The electronic device may also include a display component and a voice component. The display component may be a liquid crystal display or an electronic ink display. The input device of the computing device may be a touch layer covered on the display component, or a button, trackball or touchpad provided on the housing of the computing device, or an external keyboard, touchpad or mouse.

[0110] Those skilled in the art will understand that Figure 7 The structure shown in the figure is merely a block diagram of a portion of the structure that may be related to the specification scheme, and does not constitute a limitation on the computing device to which the specification scheme is applied. The specific computing device may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0111] Accordingly, the embodiments of this specification also provide a motor vehicle, referring to Figure 1 , including a computing device as described in any of the above embodiments. For the introduction of each system in the motor vehicle, please refer to the relevant description above, and this specification will not be repeated here.

[0112] It should be understood that the specific examples in this article are only intended to help those skilled in the art better understand the implementation methods of this specification, rather than to limit the scope of this specification.

[0113] It can be understood that the various embodiments described in this specification can be implemented individually or in combination, and the embodiments of this specification are not limited to this.

[0114] Unless otherwise specified, all technical and scientific terms used in the embodiments of this specification have the same meaning as those generally understood by those skilled in the art of the technical field of this specification. The terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit the scope of this specification. The term "and / or" used in this specification includes any and all combinations of one or more related listed items. The singular forms of "a", "above", and "the" used in the embodiments of this specification and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0115] It can be understood that the processor of the embodiment of this specification can be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method implementation can be completed by the hardware integrated logic circuit or software instructions in the processor. The above processor can be a general processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The disclosed methods, steps and logic block diagrams in the embodiment of this specification can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in the embodiment of this specification can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor are combined and executed. The software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0116] It is understood that the memory in the embodiments of this specification may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (ErasablePROM, EPROM), an electrically erasable programmable read-only memory (EEPROM) or a flash memory. The volatile memory may be a random access memory (RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0117] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this specification.

[0118] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method implementation methods and will not be repeated here.

[0119] In the several embodiments provided in this specification, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device implementation described above is only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0120] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0121] In addition, each functional unit in each embodiment of the present specification may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0122] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this specification, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the method described in each embodiment of this specification. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, etc., various media that can store program codes.

[0123] The above is only a specific implementation of this specification, but the protection scope of this specification is not limited to this. Any technician familiar with this technical field can easily think of changes or replacements within the technical scope disclosed in this specification, which should be included in the protection scope of this specification. Therefore, the protection scope of this specification should be based on the protection scope of the claims.

Claims

1. A power supply for a computing device, characterized in that: include: A first power supply module, a control circuit and a second power supply module; wherein, The first power supply module is used to receive an input of a DC power supply and output a standby voltage; The control circuit comprises: a first control branch and a second control branch, the first control branch being used to receive a power-on signal and the standby voltage, and transmitting a first enable signal to the second control branch based on the standby voltage when the power-on signal is in a first state; The second control branch is used to receive an input of the DC power supply, and when receiving the first enable signal, output a second enable signal to the second power supply module based on the input of the DC power supply; The second power supply module is used to receive the input of the DC power supply and output DC power upon receiving the second enable signal, wherein the DC power has a plurality of voltages with different amplitudes.

2. The power supply according to claim 1, characterized in that: The first control branch includes: an isolation control unit; The isolation control unit includes a first branch of the isolation device and a first resistor connected in parallel with the first branch of the isolation device; One end of the isolation control unit is used to receive the standby voltage, and the first branch of the isolation device is used to send the first enable signal to the second branch of the isolation device based on the standby voltage when the power-on signal is in the first state; The second control branch includes: a second branch of the isolation device, and the second branch of the isolation device is configured to be turned on upon receiving the first enable signal.

3. The power supply according to claim 2, characterized in that: The isolation device includes an optical coupler.

4. The power supply according to claim 2, characterized in that: The first control branch further includes: a first switch element and a second switch element; The control end of the first switch element is used to receive the power-on signal, the first end of the first switch element is electrically connected to the control end of the second switch element, the first end of the first switch element is used to receive the standby voltage, and the second end of the first switch element is electrically connected to the ground end; A first end of the second switch element is electrically connected to an input end of the isolation control unit away from the standby voltage, and a second end of the second switch element is electrically connected to a ground end.

5. The power supply according to claim 1, characterized in that: The second control branch includes a voltage clamping device and a signal output terminal; One end of the voltage clamping device is connected to the signal output end, and the other end is connected to the ground end. The voltage clamping device is used to clamp the signal potential output by the signal output end below a preset value.

6. The power supply according to claim 5, characterized in that: The voltage clamping device includes a transient voltage suppression diode.

7. The power supply according to claim 1, characterized in that: The second control branch includes a power supply filter unit, and the power supply filter unit is used to control the current in the second control branch and to perform filtering and anti-shake processing on the second enable signal.

8. The power supply according to claim 7, characterized in that: The power supply filter unit includes a filter circuit consisting of at least one resistor and at least one capacitor.

9. The power supply according to claim 1, characterized in that: The second power supply module includes a first voltage conversion unit and a plurality of second voltage conversion units; wherein, The first voltage conversion unit is used to receive an input of the DC power supply, and output a first DC power upon receiving the second enable signal, wherein the first DC power has a first voltage and is used to provide a voltage for a control signal of a mainboard of the computing device; A plurality of the second voltage conversion units are connected in parallel, and the second voltage conversion units are used to receive the input of the DC power supply and output a second DC power upon receiving the second enable signal; the second DC power output by the plurality of the second voltage conversion units connected in parallel is superimposed and used to provide a working voltage for a circuit board of the computing device.

10. The power supply according to claim 9, characterized in that: The second power supply module further includes: a voltage inverting unit; The voltage inverting unit is connected in series to an output end of the second voltage conversion unit, and is used to invert the voltage of the second direct current to obtain and output a third direct current.

11. The power supply according to any one of claims 1 to 10, characterized in that: Also includes: Anti-reverse protection module; The anti-reverse protection module is used to perform anti-reverse processing on the input of the DC power supply and then transmit it to the first power module, the control circuit and the second power module.

12. A computing device, characterized in that: include: A power-on control module and a power supply of a computing device as claimed in any one of claims 1 to 11; The power-on control module includes a first state. When the power-on control module is in the first state, a power-on signal in the first state is provided to the power supply of the computing device.

13. A motor vehicle, characterized in that: include: The computing device of claim 12.

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