Power supply control circuit, load circuit, power supply system and terminal equipment

Abstract

The invention provides a power supply control circuit, a load circuit, a power supply system and terminal equipment. The system comprises the power supply control circuit and the load circuit. The power supply control circuit comprises a power supply control module, a first switch and a second switch; the load circuit comprises a handshake circuit; the power supply control module is electrically connected to the power supply line through the first switch, the power supply control module is also electrically connected to the power supply line through the second switch, and the handshake circuit is electrically connected to the power supply line; the power supply control module is used for obtaining a power supply demand of a target load from the handshake circuit by controlling the first switch to be switched on and controlling the second switch to be switched off; the power supply control module is further used for supplying power to the target load through the power supply line based on the power supply demand by controlling the first switch to be switched off and controlling the second switch to be switched on. The cost can be reduced, and the line complexity can be reduced.

Description

Power control circuit, load circuit, power supply system and terminal equipment Technical Field

[0001] The present application relates to the field of vehicle networking technology, and specifically to a power control circuit, load circuit, power supply system and terminal equipment of a vehicle load. Background Art

[0002] Traditional vehicles have a relatively simple electrical architecture, typically using a 12V or 24V power supply to directly power the vehicle's loads. Because the voltage requirements of the vehicle's loads vary, the loads must undergo voltage conversion before they can power themselves. This requires designing modules such as voltage conversion circuits on the load side, increasing circuit area and cost. Furthermore, with the continued development of intelligent connected vehicles, the number of loads requiring power is increasing. Traditional load power supply methods in vehicles are unsuitable because they significantly increase circuit design area and cost. Consequently, a more suitable load power supply solution is urgently needed.

[0003] Summary of the Invention

[0004] The present application provides a power control circuit, a load circuit, a power supply system and a terminal device, which can reduce the design area and cost of the load power supply circuit in the automobile, and can realize time-sharing multiplexing of the power supply line and reduce the circuit complexity.

[0005] In a first aspect, the present application provides a power control circuit, which includes a power control module, a first switch, and a second switch; the power control module is electrically connected to a power supply line through the first switch, and the power control module is also electrically connected to the power supply line through the second switch; the power control module is used to obtain the power supply demand of a target load from the load circuit through the power supply line by controlling the first switch to be turned on and the second switch to be turned off; the power control module is also used to supply power to the target load through the power supply line based on the power supply demand by controlling the first switch to be turned off and the second switch to be turned on.

[0006] Optionally, the power control module includes a controller 11011 and a power module 11012 , and the power module 11012 , the on / off of the first switch, and the on / off of the second switch are controlled by the controller 11011 .

[0007] In this solution, the power control circuit and the load circuit are connected via only one power supply line, and a switch is provided to implement time-sharing multiplexing of this power supply line, so that the power control module can obtain the power supply requirements of the target load through this power supply line. Furthermore, the power control module can supply power to the target load through this power supply line based on this power supply requirement. In this solution, by obtaining the power supply requirements of the load and outputting the voltage and / or current required by the load, the load circuit does not need to be designed with modules such as a voltage transformer circuit and / or a current regulator circuit, thereby reducing circuit design area and cost. At the same time, time-sharing multiplexing of the power supply line can also reduce circuit complexity.

[0008] In a possible implementation, the power control circuit further includes a detection module; the detection module is used to obtain the operating status of the target load.

[0009] In this solution, the detection module closes the previously open-loop power supply circuit. This allows the module to detect and obtain the load's operating status (e.g., temperature, input current, or voltage) during power supply, thereby diagnosing any anomalies. This allows for rapid detection and resolution of circuit problems, ensuring proper load power supply.

[0010] In a possible implementation, the detection module and the second switch are integrated into one chip.

[0011] In this solution, the volume of the circuit can be reduced by integrating the detection module and the second switch, making the power supply system lighter.

[0012] In a possible implementation, the power control module indicates the operating status of the target load through a human-machine interface HMI.

[0013] In this solution, the parameters and / or operating status during the power supply process are displayed on the user interface and provided to the user, so that the user can understand the charging status more intuitively and conveniently, so as to timely discover and solve problems and ensure normal power supply to the load.

[0014] In a possible implementation, the power control module receives feedback information from the user through the HMI.

[0015] In this solution, users can also input instructions through the user interface and feed them back to the power control module to implement corresponding control, so as to optimize the power supply status of the load or solve problems in a timely manner.

[0016] In a possible implementation, the power control circuit is integrated with a vehicle integrated unit (VIU) in the vehicle and communicates with the VIU.

[0017] In this solution, the power control circuit can be integrated with the VIU in the vehicle, either integrated into the VIU or independent of the VIU but capable of communicating with the VIU. This allows the power control circuit to be closer to the load, making it easier to power the load. Furthermore, each of the multiple VIUs in the vehicle can be integrated with a power control circuit, forming a distributed power supply system that is more convenient for powering loads throughout the vehicle.

[0018] In a second aspect, the present application provides a load circuit, comprising a handshake circuit; the handshake circuit is electrically connected to a power supply line and is configured to provide a power supply control circuit with the power supply required by a target load via the power supply line; the target load also receives power from the power supply control circuit via the power supply line. The power supply module is configured to perform one or more of the following functions: voltage conversion based on the power supply requirement, current regulation based on the power supply requirement, or detection of the temperature, output current, or output voltage of the power supply module.

[0019] In this solution, the load circuit and the power control circuit are connected via only one power supply line, and by time-sharing multiplexing this power supply line, the load circuit can provide the power supply requirements of the target load to the power control module via this power supply line. Furthermore, the target load receives power from the power control circuit via this power supply line. In this solution, the load circuit provides the power supply requirements of the target load to the power control circuit, so that the power control circuit outputs the voltage and / or current required by the load based on the power supply requirements to supply power to the load. This eliminates the need to design modules such as a voltage transformer circuit and / or a current regulator circuit for the load circuit, reducing circuit design area and cost. At the same time, time-sharing multiplexing of the power supply line can also reduce circuit complexity.

[0020] In a possible implementation, the load circuit further includes a clamping circuit; and the handshake circuit is electrically connected to the power supply line, including: the handshake circuit is electrically connected to the power supply line via the clamping circuit. The clamping circuit is used to protect the handshake circuit.

[0021] In this solution, a clamping circuit is provided to protect the handshake circuit and reduce the probability of circuit burnout accidents.

[0022] In a possible implementation, the handshake circuit is a memory circuit, and the power supply requirement of the target load is stored in the memory circuit.

[0023] In this solution, the handshake circuit may be a memory circuit. By storing the power supply requirements of the load in advance in the memory circuit, the power control circuit may quickly obtain the power supply requirements of the load, thereby improving the efficiency of the load power supply.

[0024] In a third aspect, the present application provides a power control circuit, which includes a power control module, a first switch and a second switch; the power control module is electrically connected to a power supply line through the first switch, and the power control module is also electrically connected to the power supply line through the second switch; the power supply line is also connected to a target load; the power control module realizes time-sharing multiplexing of the power supply line by controlling the on and off of the first switch and the second switch to obtain the power supply demand of the target load and realize power supply to the target load.

[0025] In one possible implementation, the power control module controls the on / off switching of the first switch and the second switch to implement time-sharing multiplexing of the power line, thereby obtaining the power supply demand of the target load and providing power to the target load, including:

[0026] The power control module is used to obtain the power supply demand of the target load from the load circuit through the power supply line by controlling the first switch to be turned on and the second switch to be turned off; the power control module is also used to supply power to the target load through the power supply line based on the power supply demand by controlling the first switch to be turned off and the second switch to be turned on.

[0027] In this solution, the power control circuit and the load circuit are connected via only one power supply line, and a switch is provided to implement time-sharing multiplexing of this power supply line, so that the power control module can obtain the power supply requirements of the target load through this power supply line. Furthermore, the power control module can supply power to the target load through this power supply line based on this power supply requirement. In this solution, by obtaining the power supply requirements of the load and outputting the voltage and / or current required by the load, the load circuit does not need to be designed with modules such as a voltage transformer circuit and / or a current regulator circuit, thereby reducing circuit design area and cost. At the same time, time-sharing multiplexing of the power supply line can also reduce circuit complexity.

[0028] Possible implementations in the first or second aspect can be applied to the solution provided in the third aspect.

[0029] In a fourth aspect, the present application provides a power supply system, the system comprising a power control circuit and a load circuit; the power control circuit comprises a power control module, a first switch and a second switch; the load circuit comprises a handshake circuit;

[0030] The power control circuit and the load circuit are connected via a power supply line, the power control module is electrically connected to the power supply line via a first switch, the power control module is further electrically connected to the power supply line via a second switch, and the handshake circuit is electrically connected to the power supply line;

[0031] The power control module is used to obtain the power supply demand of the target load from the handshake circuit by controlling the first switch to be turned on and the second switch to be turned off;

[0032] The power control module is further configured to supply power to the target load through the power line based on the power supply demand by controlling the first switch to be disconnected and controlling the second switch to be connected.

[0033] In a possible implementation, the load circuit further includes a clamping circuit; and the handshake circuit is electrically connected to the power supply line, including: the handshake circuit is electrically connected to the power supply line through the clamping circuit.

[0034] In a possible implementation, the power control circuit further includes a detection module; the detection module is used to obtain the operating status of the target load.

[0035] In a possible implementation, the detection module and the second switch are integrated into one chip.

[0036] In a possible implementation, the power control module indicates the operating status of the target load through a human-machine interface HMI.

[0037] In a possible implementation, the power control module receives feedback information from the user through the HMI.

[0038] In a possible implementation, the power control circuit is integrated with a vehicle integrated unit (VIU) in the vehicle and communicates with the VIU.

[0039] In a possible implementation, the handshake circuit is a memory circuit, and the power supply requirement of the target load is stored in the memory circuit.

[0040] In a possible implementation, the power control module includes a controller 11011 and a power module 11012 . The power module 11012 , the on / off of the first switch, and the on / off of the second switch are controlled by the controller 11011 .

[0041] In a fifth aspect, the present application provides a terminal device, which includes the power supply system described in any one of the third aspects above.

[0042] Optionally, the terminal device may be a vehicle.

[0043] Alternatively, the terminal device includes the power control circuit described in any one of the first aspects above.

[0044] The beneficial effects of the solutions provided by the above-mentioned fourth and fifth aspects and their possible implementation methods can be referred to the description of the above-mentioned first and second aspects, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figures 1 to 3 are schematic diagrams of a power supply system provided in an embodiment of the present application;

[0046] FIG4 is a schematic diagram of a clamping circuit provided in an embodiment of the present application;

[0047] FIG5 is a schematic diagram of the EEPROM circuit structure provided in an embodiment of the present application;

[0048] Figures 6, 6A and 7 are schematic diagrams of a power supply system provided in an embodiment of the present application;

[0049] Figures 8 and 9 are schematic diagrams of graphical interfaces provided in embodiments of the present application;

[0050] FIG10 is a schematic diagram of a power supply process according to an embodiment of the present application;

[0051] FIG11 is a schematic diagram of the deployment of a power control circuit provided in an embodiment of the present application. DETAILED DESCRIPTION

[0052] In the embodiment of the present application, "multiple" refers to two or more. In the embodiment of the present application, "and / or" is used to describe the association relationship of associated objects, indicating three relationships that can exist independently. For example, A and / or B can represent: A exists alone, B exists alone, or A and B exist at the same time. The description methods such as "at least one (or at least one) of a1, a2, ... and an" adopted in the embodiment of the present application include the situation where any one of a1, a2, ... and an exists alone, and also include any combination of any multiple of a1, a2, ... and an, each of which can exist alone; for example, the description method of "at least one of a, b and c" includes the situation where a is alone, b is alone, c is alone, a and b combination, a and c combination, b and c combination, or a, b, c combination.

[0053] In the various embodiments of the present application, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between the various embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0054] The embodiments of the present application will be described below with reference to the accompanying drawings.

[0055] 1 , which exemplarily shows a schematic diagram of a power supply system provided by an embodiment of the present application, wherein the power supply system 100 shown in FIG1 includes a power control circuit 110 , a load circuit 120 , and a target load 130 .

[0056] The power control circuit 110 can supply power to a load (e.g., a target load 130) based on the load's power supply requirements. Furthermore, the power control circuit 110 can also be used to monitor the load's operating status, such as its charging status, to promptly detect faults. The power control circuit 110 is electrically connected to the load circuit 120 and the target load 130 via power lines 140. Specifically, the power control circuit 110 includes a power control module 1101, a first switch 1102, and a second switch 1103. The power control module 1101 is electrically connected to the power line 140 via the first switch 1102. The power control module 1101 is also electrically connected to the power line 140 via the second switch 1103. The load circuit 120 includes a handshake circuit 1201. The handshake circuit 1201 is also electrically connected to the power line 140.

[0057] The power control module 1101 can achieve time-division multiplexing of the power supply line 140 by controlling the on / off switching of the first switch 1102 and the second switch 1103, thereby providing power to the target load 130. Specifically, the power control module 1101 obtains the power supply demand of the target load 130 from the handshake circuit 1201 by controlling the first switch 1102 to be conductive and the second switch 1103 to be disconnected. The power control module 1101 is further configured to supply power to the target load 130 via the power supply line 140 based on the power supply demand by controlling the first switch 1102 to be disconnected and the second switch 1103 to be conductive. The specific implementation process will be described later and will not be detailed here.

[0058] In one possible implementation, as shown in FIG2 , the power control module 1101 may include a controller 11011 and a power module 11012. The controller 11011 may be used to control the on / off of the first switch 1102, the on / off of the second switch 1103, and the power module 11012. The power module 11012 may be used to implement functions such as voltage conversion, current regulation, or status monitoring (e.g., monitoring the temperature of the power module 11012, the current or voltage output by the power module 11012 to the load, etc.). In this implementation, the controller 11011 may control the first switch 1102 to be turned on and the second switch 1103 to be turned off, so that the controller 11011 can be connected to the handshake circuit and obtain the power supply demand of the target load 130 from the handshake circuit. The controller 11011 may also control the first switch 1102 to be turned off and the second switch 1103 to be turned on, so as to supply power to the target load 130 based on the power supply demand through the power line 140.

[0059] The controller 11011 and the power module 11012 can be connected via a control bus. The control bus can be an open standard power management protocol bus, or it can be a custom protocol bus. Exemplarily, the control bus can be, for example, a power management bus (PMBus). The PMBus can facilitate communication with a power converter (such as the power module 11012) or other devices by defining transmission and physical interfaces and command languages. Its read and write operation timing is similar to that of an inter-integrated circuit (I2C) bus. Programming, sequencing, configuration, control, voltage margin adjustment or output voltage adjustment can also be achieved through the PMBus, thereby quickly redesigning the charging control. In addition, parameter and fault detection can also be achieved through the PMBus, so that parameters and observed faults can be responded to more intelligently. For example, the controller 11011 can obtain the temperature of the power module 11012, the current or voltage output by the power module 11012 to the target load 130, etc. from the power module 11012 through the PMBus, and then determine whether the temperature, current or voltage is abnormal to achieve fault detection.

[0060] For example, the controller 11011 may be a microcontroller unit (MCU), a central processing unit (CPU), a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and the like.

[0061] For example, the first switch 1102 may be an electronic switch such as a thyristor, a transistor, a field-effect transistor, a thyristor, or a relay. Similarly, the second switch 1103 may be an electronic switch such as a thyristor, a transistor, a field-effect transistor, a thyristor, or a relay. It should be understood that this is merely an example and does not constitute a limitation on the embodiments of the present application.

[0062] By way of example, the target load 130 can be any load requiring power. Taking a vehicle as an example, the target load 130 can include various sensors, starting systems, ignition systems, auxiliary electrical equipment, or devices within the vehicle's electronic control system. Specifically, the target load 130 can include, for example, the starter motor or its control circuit within the starting system. Alternatively, the target load 130 can include, for example, the ignition coil, igniter, distributor, or spark plug within the ignition system. Alternatively, the target load 130 can include, for example, an oil pressure gauge, an air pressure gauge, and various warning lights. Alternatively, the target load 130 can include, for example, auxiliary electrical equipment such as electric wipers, windshield washers, air conditioning systems, automotive audio and video equipment, electric window lifts, electric seats, electric sunroofs, or electric rearview mirrors. Alternatively, the target load 130 can include, for example, an electronically controlled automatic transmission, an electronically controlled suspension, an anti-lock / anti-skid braking system, an electronically controlled power steering system, a traction control system, or a cruise control system. Alternatively, the target load 130 may be, for example, an airbag, seat belt, central anti-theft door lock, power windows, fully automatic air conditioning, multi-function power seats, a multimedia interface, a camera, or a microphone. Alternatively, the target load 130 may be, for example, a navigation system, an in-vehicle network system, a status monitoring and fault diagnosis system, or the like. It should be understood that these are merely examples and do not constitute limitations on the embodiments of the present application.

[0063] In one possible implementation, the load circuit 120 further includes a clamping circuit. For example, referring to FIG. 3 , the clamping circuit is disposed between the power supply line 140 and the handshake circuit 1201. The clamping circuit can fix the voltage input to the handshake circuit 1201 at a specified voltage value or within a preset voltage range, thereby preventing high voltage input from damaging the handshake circuit 1201. It is understood that the specified voltage value and the preset voltage range can be set according to actual needs and are not limited in the embodiments of the present application. In other words, the clamping circuit can be used to protect the handshake circuit 1201, enabling it to operate normally. For example, referring to FIG. 4 , the clamping circuit may include a clamping resistor R1 and a Zener diode ZD. One end of the clamping resistor R1 is electrically connected to the power supply line 140. The other end of the clamping resistor R1 is electrically connected to the cathode of the Zener diode ZD, and the anode of the Zener diode ZD is grounded. The other end of the clamping resistor R1 and the cathode of the Zener diode ZD are electrically connected to the handshake circuit 1201. The clamping resistor serves as a limiting resistor. When the voltage input to power supply line 140 is higher than the supply voltage of handshake circuit 1201, the clamping resistor will dissipate excess energy, and the voltage regulator diode ZD will clamp the voltage at the input end of handshake circuit 1201 to a fixed value, so that the voltage input to handshake circuit 1201 remains stable and prevents high voltage from damaging the circuit. It will be understood that the clamping circuit shown in Figure 4 is only an example and does not constitute a limitation on the embodiments of the present application. In specific implementations, other clamping circuits with different structures or components can also be used, and the embodiments of the present application are not limited thereto.

[0064] The handshake circuit 1201 can implement handshake with the power control module 1101 through the power supply line 140, and provide the power control module 1101 with the power supply requirement of the target load 130. Exemplarily, the handshake circuit 1201 can implement handshake with the controller 11011 in the power control module 1101. Exemplarily, the power supply requirement may include one or more of the following: the voltage value required by the target load 130, the accuracy of the voltage, the current value required by the target load 130, the accuracy of the current, or the power ripple of the target load 130.

[0065] For example, the controller 11011 can implement handshaking via a handshake protocol and the handshake circuit 1201. In a specific implementation, the controller 11011 reads the power supply requirements of the target load 130 from the handshake circuit 1201 via the handshake protocol. The handshake protocol can be a universal protocol or a proprietary protocol. For example, the handshake protocol can be an I2C protocol. Alternatively, the handshake protocol can be determined based on the circuit design of the handshake circuit 1201. It will be understood that this is merely an example and does not constitute a limitation on the embodiments of the present application.

[0066] In one possible implementation, the handshake circuit 1201 may be a memory circuit that stores the power supply requirements of the target load 130. For example, the memory may include, but is not limited to, flash memory, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or compact disc read-only memory (CD-ROM). For example, FIG5 shows a schematic diagram of the memory circuit, taking the memory as an EEPROM.

[0067] As shown in FIG5 , the EEPROM circuit includes a device power module 11012 (Device Power Module), a storage system control module (Device Power Module), a device configuration latch (Device Configuration Latches), a high voltage generation circuit (High Voltage Generation Circuit), a reset detection module (Reset Detection), a command control module (Command Control), an EEPROM array (EEPROM Array), a row decoder (Row Decoder), a column decoder (Column Decoder), a data register (Data Register), a data and ACK input / output control module (Data & ACK Input / Output Control), and an internal timing generator (Internal Timing Generation). The EEPROM circuit is grounded (GND) through a field-effect transistor. Specifically, as shown in FIG5 , the source S of the field-effect transistor is grounded. In addition, the gate G of the field-effect transistor is connected to the data and ACK input / output control module. The drain D of the field-effect transistor is respectively connected to the data and ACK input / output control module, the storage system control module, the internal timing generator, the command control module, the reset detection module, the device power module 11012, and the serial input / output (SI / O) pin. Since the SI / O pin is connected to the drain D of the field-effect transistor, when the SI / O pin is left floating, the SI / O pin is in a high-impedance state with an open drain. In addition, the SI / O pin is an input / output pin. The EEPROM can be powered through the SI / O pin, and the power supply requirements of the target load 130 can be read from the EEPROM.

[0068] Exemplarily, since the SI / O pin is in an open-drain, high-impedance state, a pull-up resistor is required to pull up the voltage on the SI / O pin to power the EEPROM. For example, see Figure 6 . In Figure 6 , the handshake circuit 1201 is the EEPROM circuit 1201. The SI / O pin of the EEPROM circuit is connected to one end of the first switch 1102 via the power supply line 140. Alternatively, the SI / O pin of the EEPROM circuit is connected to the clamping circuit, and then to one end of the first switch 1102 via the clamping circuit and the power supply line 140. The other end of the first switch 1102 is connected to one end of the pull-up resistor R2. The other end of the pull-up resistor R2 receives the supply voltage Vcc. When the first switch 1102 is on, the Vcc can power the EEPROM via the power supply line. Exemplarily, the Vcc can be 1.8V, for example. It will be appreciated that the value of Vcc here is merely an example and may be other values ​​in a specific implementation, and this is not a limitation of the present invention. The pull-up resistor R2 is disposed at the end of the first switch 1102 connected to the power control module 1101, rather than at the end of the first switch 1102 connected to the power supply line 140. This ensures that the supply voltage is not affected by Vcc when the second switch 1103 is turned on to power the target load 130, thereby ensuring normal power supply to the target load 130.

[0069] For example, the power supply requirements of the target load 130 can be pre-programmed into an EEPROM at a specified address, and the power control module 1101 stores the specified address. After power-on initialization is complete, the power control module 1101 can control the first switch 1102 to turn on and the second switch 1103 to turn off. Then, based on the handshake protocol, handshake communication is performed with the EEPROM via the power line 140. Based on the specified address, the power supply requirements of the target load 130 are read from the EEPROM via the power line 140 and the SI / O pin.

[0070] It will be understood that the above-mentioned EEPROM circuit is merely an example and does not constitute a limitation to the embodiments of the present application.

[0071] In a possible implementation, the handshake circuit 1201 can store not only the power supply requirements of the target load 130, but also the power supply requirements of one or more other loads. Exemplarily, the power supply requirements of each load can be stored in the handshake circuit 1201 according to a pre-specified address. Moreover, the storage address of the power supply requirements of each load is stored in the power control module 1101. Exemplarily, the storage address of the power supply requirements of a certain load can be stored in association with the identifier of the load. The power control module 1101 can find the storage address of the power supply requirements of the load based on the identifier of the load, and obtain the power supply requirements of the load from the handshake circuit 1201 based on the found address.

[0072] In a possible implementation, if multiple loads have the same power supply requirements, the power supply requirements of the multiple loads may be stored in the same designated address. In this case, the designated address in the power control module 1101 may be stored in association with the identifiers of the multiple loads.

[0073] In one possible implementation, if multiple loads have different power supply requirements and need to be powered simultaneously, multiple first switches 1102, multiple second switches 1103, and multiple load circuits 120 may be provided. For ease of understanding, please refer to FIG6A for example. FIG6A takes the simultaneous power supply of two loads with different power supply requirements as an example. It can be seen that each target load corresponds to a first switch, a second switch, and a load circuit. The power control module can simultaneously control the on and off of multiple first switches and second switches so that multiple loads can be powered simultaneously.

[0074] In one possible implementation, after the power control module 1101 first obtains the power supply requirement of the target load 130 from the handshake circuit 1201, it can save the power supply requirement. When powering the target load 130 subsequently, the saved power supply requirement can be directly called upon to provide the corresponding power supply, without having to read the power supply again from the handshake circuit 1201. This can conserve communication resources, expedite power supply to the load, and further improve load startup efficiency due to timely power supply.

[0075] In one possible implementation, the power supply requirement of the target load 130 can be dynamically updated. In this case, the target load 130 can communicate with the handshake circuit 1201 and then store the updated power supply requirement in place of the original power supply requirement at the designated address. This allows the power control module 1101 to read the updated power supply requirement from the handshake circuit 1201 and then power the target load 130 based on the updated power supply requirement, thereby ensuring stable power supply to the target load 130.

[0076] In one possible implementation, the power control circuit 110 further includes a detection module. The detection module can be used to obtain the operating status of the target load 130 and send information indicating the operating status to the controller 11011. For example, see FIG7 . The detection module can be electrically connected to the controller 11011 and to the power supply line 140. During the process of supplying power to the target load 130, the detection module can detect the operating status of the target load, such as the input voltage, input current, and temperature, through the power supply line. The detected operating status can be sent to the controller 11011. This allows the controller 11011 to determine whether an abnormality exists or whether a fault has occurred based on the operating status. For example, based on the operating status, it can determine whether the current is too high or too low, whether the voltage is too high or too low, whether the temperature is too high, whether a short circuit or an open circuit has occurred, etc. It will be understood that this is merely an example and does not constitute a limitation to the embodiments of the present application.

[0077] In a possible implementation, the second switch 1103 and the detection module may be integrated into one chip, for example, a high side switch (HSD) chip.

[0078] In a possible implementation, the controller 11011 can also communicate interactively with a human machine interface (HMI) through a network interface or a universal asynchronous receiver / transmitter (UART). Exemplarily, the controller 11011 can indicate the operating status of the target load 130 through the HMI. For example, the input voltage, input current, temperature, etc. of the target load 130 during the power supply process can be indicated through the HMI. Exemplarily, the operating status can be displayed through a graphical user interface, for example, the status information shown in Figure 8 can be displayed through a graphical user interface. In Figure 8, the "load operating status" corresponding to the display can be the operating status of the target load 130. Exemplarily, the input voltage V of the target load 130 can be displayed. in (0.998V is shown as an example in FIG8 ), input current I in (3A is shown as an example in FIG8 ) and the temperature Temp (25° C. is shown as an example in FIG8 ). It can be understood that the input voltage V in is the output voltage of the power module 11012, and the input current I in is the output current of the power module 11012, and the temperature Temp is the temperature around the target load 130 detected by the power module 11012 or the detection module.

[0079] Figure 8 also shows indications for overvoltage failure (OVF), overcurrent failure (OCF), and overtemperature failure (OTF). For example, if the voltage, current, or temperature is normal, a green light (indicated by a white-filled circle in Figure 8) illuminates; if the voltage, current, or temperature is abnormal, a red light (indicated by a black-filled circle in Figure 8) illuminates. Displaying the load's operating status through a graphical user interface makes it easier to understand the load's specific conditions and identify and troubleshoot faults promptly.

[0080] In another possible implementation, the controller 11011 may receive feedback information from the user via an HMI. For example, the feedback information from the user may be received via a graphical user interface. For example, the controller 11011 may display information as shown in FIG9 via a graphical user interface. In FIG9 , the address, operation, and specified voltage (V in command) is programmable, that is, the user can input the required specific value or instruction through the user interface. The address can be the address of the power module in the above-mentioned power supply system (for example, it can be the address of the above-mentioned power module 11012), and the object of specific programming control can be indicated through this address. This operation is used to indicate whether programming is allowed. When "on" is selected, it means that programming is allowed; when "off" is selected, it means that programming is not allowed, that is, the user cannot feedback the relevant value or instruction through the user interface. The specified voltage can be the input voltage required by the load (for example, it can be the input voltage required by the above-mentioned target load 130).

[0081] The information input by the user can be fed back to the controller 11011 through the user interface, so that the controller 11011 can perform corresponding processing operations based on the information fed back by the user. For example, in Figure 9, the user interface receives the address information of the power module 11012, the selection operation of "on", and the input voltage value required by the target load 130 (1V is shown as an example in Figure 9) input by the user, and sends the received information to the controller 11011. Based on the received information, the controller 11011 controls the power module 11012 to input a voltage of 1V to the target load 130 to power it.

[0082] To facilitate understanding of the power supply process of the power supply system 100, an exemplary description is given below with reference to FIG10. The power supply process includes but is not limited to the following steps:

[0083] S1001. Power on the power control module.

[0084] The power control module may be, for example, the power control module 1101 described above.

[0085] S1002: The power control module controls the second switch to be turned off and controls the first switch to be turned on.

[0086] After the power-on initialization is completed, the power control module can control the second switch to be turned off and the first switch to be turned on. For example, assuming that the first switch or the second switch is a thyristor, a transistor, a field effect transistor, or a thyristor, the power control module can provide a turn-on voltage to the first switch or the second switch to turn on the first switch or the second switch. In addition, the power control module can provide a turn-off voltage to the first switch or the second switch to turn off the first switch or the second switch.

[0087] Alternatively, for example, assuming the first or second switch is a relay, the power control module can energize the electromagnet, drawing down the armature and closing the working circuit, thereby turning on the first or second switch. Alternatively, the electromagnet can be de-energized to demagnetize it, causing a spring to pull up the armature, thereby breaking the working circuit and disconnecting the first or second switch.

[0088] It is understood that the above description is only an example and does not constitute a limitation on the embodiments of the present application. The embodiments of the present application do not limit the specific form and on / off control method of the first switch and the second switch.

[0089] For example, in the power supply system shown in FIG2 , the on and off of the first switch and the second switch may be controlled by the controller 11011 .

[0090] S1003: The power control module shakes hands with the load circuit through the power supply line and obtains the power supply requirement of the target load.

[0091] After the power control module controls the second switch to be turned off and the first switch to be turned on, the power control module can perform a handshake with a handshake circuit (e.g., handshake circuit 1201) in the load circuit via a power line (e.g., power line 140). This handshake can be implemented, for example, based on the handshake protocol described above. The specific handshake process can be referred to the previous description and will not be repeated here.

[0092] After the handshake is completed, the power control module can send the storage address of the target load's power supply requirement to the handshake circuit. The handshake circuit reads the target load's power supply requirement based on the storage address and sends it to the power control module.

[0093] For example, in the power supply system shown in FIG2 , the controller 11011 performs handshake communication with the handshake circuit and obtains the power supply demand of the target load.

[0094] S1004: The power control module controls the first switch to be turned off and controls the second switch to be turned on.

[0095] For example, after the controller 11011 obtains the power supply demand of the target load, it can control the power supply module (e.g., the power supply module 11012) to output the voltage and / or current required by the target load based on the power supply demand. The power supply module can be connected to a power supply, and the power supply module can adjust the voltage and / or current input from the power supply to the voltage and / or current output required by the target load.

[0096] For example, in a specific implementation, after the controller 11011 obtains the power supply demand of the target load, the power supply demand can be sent to the power module. The power module adjusts the voltage and / or current of the power input based on the power supply demand to obtain the voltage and / or current required by the target load. Or, for example, after the controller 11011 obtains the power supply demand of the target load, it can generate a corresponding voltage and / or current adjustment control signal based on the power supply demand. And send the control signal to the power module. The power module adjusts the voltage and / or current of the power input based on the control signal to obtain the voltage and / or current required by the target load. It can be understood that the adjustment of voltage and / or current can adopt the existing adjustment method, and the embodiments of the present application are not limited to this.

[0097] After completing the adjustment of the voltage and / or current, the power module may send an adjustment completion indication signal to the controller 11011. The controller 11011 may control the first switch to be turned off and the second switch to be turned on based on the indication signal.

[0098] S1005: The power control module supplies power to the target load through the power supply line based on the acquired power supply demand.

[0099] After the controller 11011 controls the first switch to be disconnected and the second switch to be turned on, the power control module can transmit the voltage and / or current obtained after adjustment based on the power supply demand to the target load via the power supply line for powering the target load.

[0100] In one possible implementation, the power supply system 100 can be used in a vehicle. For example, the power control circuit 110 in the power supply system 100 can be integrated with a vehicle integration unit (VIU) in the vehicle and communicate with the VIU. In this case, the power control circuit 110 can supply power to loads near the VIU. The specific power supply process can be found in the above description and is not detailed here.

[0101] For example, the power control circuit 110 and the VIU may be integrated into each other, or may be independent of the VIU but deployed close to and in communication with the VIU.

[0102] For example, a VIU may be integrated with one or more power control circuits 110 .

[0103] In a specific implementation, the VIU may provide partial or full data processing or control functions for multiple components of the vehicle. The following examples illustrate the functions of the VIU. It should be understood that the VIU may have one or more of the following functions:

[0104] ① Electronic control functions: The VIU is used to implement some or all of the electronic control functions provided by the electronic control unit (ECU) within the aforementioned vehicle components. For example, the control functions required by a specific vehicle component, or the data processing functions required by a specific vehicle component.

[0105] ② The same functions as the gateway, that is, the VIU can also have some or all of the same functions as the gateway, such as protocol conversion function, protocol encapsulation and forwarding function, and data format conversion function.

[0106] ③ The function of processing data across vehicle components, that is, the function of processing or calculating data obtained from actuators of multiple vehicle components.

[0107] It should be noted that the data involved in the above functions may include operating data of actuators in vehicle components, such as actuator motion parameters and actuator operating status. The data involved in the above functions may also be data collected by a data acquisition unit (e.g., a sensitive element or sensor) of a vehicle component. This embodiment of the present application does not specifically limit this.

[0108] In one possible implementation, multiple VIUs are deployed in a vehicle. Each VIU can be integrated with one or more of the aforementioned power control circuits 110. For an exemplary embodiment, see Figure 11. As shown in Figure 11, four VIUs (a first VIU, a second VIU, a third VIU, and a fourth VIU) are deployed in a vehicle. Figure 11 illustrates the integrated deployment of each VIU with a power control circuit, and also illustrates the deployment of a power control circuit independent of the VIU. Taking the first VIU as an example, the power control circuit 1 integrated with the first VIU can be connected to a load 1 near the first VIU via a power supply line, and further connected to a load circuit 1 corresponding to the load 1 via the power supply line. For example, the load 1 can be the target load 130 described above, and the load circuit 1 corresponding to the load 1 can be the load circuit 120 described above. The power control circuit 1 can obtain the power supply requirements of the load 1 from the load circuit 1 and supply power to the load 1 based on the power supply requirements. Furthermore, the load 1 can communicate with the first VIU. The same applies to the other VIUs and will not be further described. FIG11 takes the load near the VIU as one load as an example. In a specific implementation, the load near the VIU may include one or more loads.

[0109] The embodiment of the present application also provides a terminal device, which may include any of the power supply systems described above. Alternatively, the terminal device includes any of the power control circuits described above. Exemplarily, the terminal device may be any possible vehicle, ship, aircraft, network equipment, base station, user station, mobile station, mobile station, intelligent manufacturing equipment (automatic production equipment such as CNC machine tools, automatic control cabinets or transmission equipment), smart home equipment (such as smart speakers, air conditioners, washing machines or televisions, etc.), etc. It will be understood that this is only an example and does not constitute a limitation to the embodiments of the present application.

[0110] In summary, in this solution, the power control circuit and the load circuit are connected via only one power supply line, and a switch is provided to achieve time-sharing multiplexing of this power supply line, so that the power supply demand of the target load can be obtained through this power supply line, and then the voltage and / or current required by the target load is output through this power supply line to provide power to the target load based on the power supply demand. In this solution, by obtaining the power supply demand of the load and outputting the voltage and / or current required by the load accordingly, the load circuit does not need to design modules such as a transformer circuit, thereby reducing the circuit design area and cost. At the same time, the time-sharing multiplexing of the power supply line can also reduce the complexity of the circuit.

[0111] In this application, the terms "first," "second," and the like are used to distinguish between identical or similar items having substantially the same function or effect. It should be understood that "first," "second," and "nth" do not have a logical or temporal dependency, nor do they limit the quantity or order of execution. It should also be understood that although the following description uses the terms "first," "second," and the like to describe various elements, these elements should not be limited by these terms. These terms are simply used to distinguish one element from another.

[0112] It should also be understood that in the various embodiments of the present application, the size of the serial number of each process does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0113] It will also be understood that the term “comprise” (also known as “includes,” “including,” “comprises,” and / or “comprising”) when used in this specification specifies the presence of stated features, integers, steps, operations, elements, and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0114] It should also be understood that references throughout this specification to "one embodiment," "an embodiment," or "one possible implementation" mean that specific features, structures, or characteristics associated with that embodiment or implementation are included in at least one embodiment of the present application. Therefore, the appearance of "in one embodiment," "in an embodiment," or "one possible implementation" throughout this specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0115] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A power supply control circuit, characterized in that: The power control circuit includes a power control module, a first switch and a second switch; The power control module is electrically connected to the power supply line via a first switch, and the power control module is also electrically connected to the power supply line via a second switch; The power control module is configured to obtain a power supply demand of a target load from a load circuit through the power supply line by controlling the first switch to be turned on and the second switch to be turned off; The power control module is further configured to supply power to the target load through the power line based on the power supply demand by controlling the first switch to be disconnected and controlling the second switch to be connected.

2. The power supply control circuit according to claim 1, wherein: The power supply control circuit further includes a detection module; the detection module is used to obtain the operating status of the target load.

3. The power supply control circuit according to claim 2, wherein: The detection module and the second switch are integrated into one chip.

4. The power control circuit according to any one of claims 1 to 3, characterized in that: The power control module indicates the operating status of the target load through a human-machine interface HMI.

5. The power supply control circuit according to claim 4, wherein: The power control module receives feedback information from the user through the HMI.

6. The power control circuit according to any one of claims 1 to 5, characterized in that: The power control circuit is integrated with a vehicle integrated unit (VIU) in the vehicle and communicates with the VIU.

7. The power control circuit according to any one of claims 1 to 6, characterized in that: The power control module includes a controller 11011 and a power module 11012. The power module 11012, the on / off of the first switch, and the on / off of the second switch are controlled by the controller 11011. The power module is used to implement one or more of the following functions: voltage conversion based on the power supply requirements, current regulation based on the power supply requirements, or detecting the temperature, output current, or output voltage of the power module.

8. A load circuit, characterized in that: The load circuit includes a handshake circuit; The handshake circuit is electrically connected to the power supply line and is used to provide the power supply demand of the target load to the power control circuit through the power supply line; the target load also receives power from the power control circuit through the power supply line.

9. The load circuit according to claim 8, wherein: The load circuit further includes a clamping circuit; the clamping circuit is used to protect the handshake circuit; The handshake circuit is electrically connected to the power supply line, and includes: The handshake circuit is electrically connected to the power supply line through the clamp circuit.

10. The power supply system according to claim 8 or 9, characterized in that: The handshake circuit is a memory circuit, and the power supply requirement of the target load is stored in the memory circuit.

11. A power supply system, characterized in that: The system includes a power control circuit and a load circuit; the power control circuit is the power control circuit described in any one of claims 1-7; the load circuit is the load circuit described in any one of claims 9-10.

12. A terminal device, characterized in that: The terminal device includes the power supply system according to claim 11; or, the terminal device includes the power control circuit according to any one of claims 1-7.

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