Driving system and method

Abstract

The invention relates to a driving system which comprises a control end and a driving end. The control end is connected with the driving end and is used for simultaneously sending a communication dormancy signal and an enabling dormancy signal to the driving end so as to enable the driving end to enter a whole-end dormancy state, and is also used for sending an enabling awakening signal to the driving end so as to enable the driving end to end the whole-end dormancy state; and the driving end is used for receiving the communication dormancy signal and the enabling dormancy signal and entering a whole-end dormancy state, and is also used for receiving the enabling awakening signal and ending the whole-end dormancy state. The sleep power consumption of the driving circuit can be reduced, the energy utilization rate is improved, and unnecessary circuit loss and energy consumption are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic circuits, and in particular to a driving system and method. Background Art

[0002] Considering the energy conservation of the entire system, there is a growing demand for driver circuit sleep functions within the system to reduce power consumption during standby mode. For example, in a new energy vehicle system, reducing the power consumption of the water pump motor driver circuit can significantly extend battery life when the vehicle is in standby mode.

[0003] However, drive circuits often include voltage conversion circuits for powering chips and components. For example, in a 24V / 48V powered vehicle system, due to the higher input voltage, a DC / DC (Direct Current to Direct Current) voltage conversion circuit is required within the water pump driver to power the internal chips and components. When the driven object needs to enter a low-power sleep state, the chip and communication circuits in the drive circuit can sleep, while the voltage conversion circuit needs to continue working to provide the power needed to wake up other parts of the circuit. This makes it difficult to further reduce power consumption in the system standby state or when the driven object is in sleep mode.

[0004] Therefore, there is an urgent need for a driving system that can reduce the dormant power consumption of the driving circuit in the system standby state. Summary of the Invention

[0005] The object of the present invention is to provide a driving system and method so as to reduce the dormant power consumption of a driving circuit in a system standby state.

[0006] To achieve the above object, the present invention provides a driving system, comprising: a control end and a driving end;

[0007] The control end is connected to the driving end and is used to send a communication sleep signal and an enable sleep signal to the driving end at the same time to make the driving end enter the whole-end sleep state, and is also used to send an enable wake-up signal to the driving end to make the driving end end the whole-end sleep state;

[0008] The driving end is used to receive the communication sleep signal and the enable sleep signal and enter the whole-end sleep state, and is also used to receive the enable wake-up signal and end the whole-end sleep state.

[0009] Optionally, the driving end includes: a driving control circuit and a power conversion circuit;

[0010] The drive control circuit is connected to the control terminal and the power conversion circuit respectively, and is used to use the drive conversion power provided by the power conversion circuit to receive the communication sleep signal, send a control sleep signal to the power conversion circuit according to the communication sleep signal, and enter a control sleep state;

[0011] The power conversion circuit is connected to the control terminal, and is used for receiving the sleep enable signal and the sleep control signal, and entering a power sleep state.

[0012] Optionally, the power conversion circuit is also used to receive the enable wake-up signal and enter the power wake-up state, providing the drive conversion power to the drive control circuit so that the drive end ends the whole-end sleep state and enters the whole-end standby state.

[0013] Optionally, the control end is further configured to send a communication wake-up signal to the drive control circuit after sending the enable wake-up signal;

[0014] The drive control circuit is further configured to utilize the drive conversion power supply to receive the communication wake-up signal and enter a drive wake-up state, so that the drive end enters a whole-end wake-up state.

[0015] Optionally, the driving system further includes: a first diode and a second diode;

[0016] The anode of the first diode is connected to the control terminal, and the cathode is connected to the power conversion circuit, and is used to transmit the enable sleep signal and the enable wake-up signal;

[0017] The anode of the second diode is connected to the drive control circuit, and the cathode is connected to the power conversion circuit, and is used to transmit the control sleep signal.

[0018] Optionally, the drive system further includes: a control bus;

[0019] The control terminal and the drive control circuit are respectively connected to the control bus to transmit the communication sleep signal.

[0020] The present invention further provides a driving method, which is performed by the driving system provided in any embodiment of the present invention, comprising:

[0021] Sending a communication sleep signal and an enable sleep signal to the driver through the control end at the same time;

[0022] Receiving the communication sleep signal and the enable sleep signal through the driver end, and entering a whole-end sleep state;

[0023] Sending an enable wake-up signal to the driving end through the control end;

[0024] The enable wake-up signal is received through the driving end, and the sleep state of the entire end is ended.

[0025] Optionally, the receiving the communication sleep signal and the enable sleep signal by the driver end and entering the whole-end sleep state includes:

[0026] The driving control circuit of the driving end receives the communication sleep signal by using the driving conversion power provided by the power conversion circuit of the driving end, sends a control sleep signal to the power conversion circuit according to the communication sleep signal, and enters a control sleep state;

[0027] The power conversion circuit receives the sleep enable signal and the sleep control signal, and enters a power sleep state.

[0028] Optionally, the receiving the enable wake-up signal through the driver end and ending the sleep state of the entire end includes:

[0029] The power conversion circuit receives the enable wake-up signal and enters the power wake-up state, providing the drive conversion power to the drive control circuit, so that the drive end ends the whole-end sleep state and enters the whole-end standby state.

[0030] Optionally, after the control end sends the enable wake-up signal to the driver end, the method further includes:

[0031] Sending a communication wake-up signal to the drive control circuit via the control terminal;

[0032] The drive control circuit utilizes the drive conversion power supply to receive the communication wake-up signal and enter the drive wake-up state, so that the drive end enters the whole-end wake-up state.

[0033] As can be seen from the above, the technical solution provided by the present invention is to set the driving end to enter sleep mode when it receives the communication sleep signal and the enable sleep signal at the same time, and in the sleep state, the driving end can end the sleep state of the entire end by only sending the enable wake-up signal through the control end of the system, thereby realizing the control of the entire driving end circuit to enter the sleep state in the system standby state, while maintaining interaction with the system control so as to be awakened in time, solving the problem in the prior art that it is difficult to further reduce the power consumption in the system standby state or the drive object sleep state, reducing the sleep power consumption of the driving circuit, improving energy utilization, and avoiding unnecessary circuit loss and energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic structural diagram of a drive system provided in Embodiment 1 of the present invention;

[0035] Figure 2 A schematic structural diagram of a drive system provided in the second embodiment of the present invention;

[0036] Figure 3 A schematic structural diagram of another drive system provided in the second embodiment of the present invention;

[0037] Figure 4 A schematic structural diagram of a bus communication circuit provided in the second embodiment of the present invention;

[0038] Figure 5 A schematic diagram of the structure of an MCU main control chip circuit provided in the second embodiment of the present invention;

[0039] Figure 6 A schematic structural diagram of a DC / DC voltage conversion circuit provided in the second embodiment of the present invention;

[0040] Figure 7 A schematic diagram of the working principle of a drive system provided in the second embodiment of the present invention;

[0041] Figure 8 A schematic diagram of the working principle of another drive system provided in the second embodiment of the present invention;

[0042] Figure 9 A schematic diagram of the working principle of another drive system provided in the second embodiment of the present invention;

[0043] Figure 10 This is a flowchart of a driving method provided in Example 3 of the present invention. DETAILED DESCRIPTION

[0044] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific embodiments. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only show portions relevant to the present invention, not all of them.

[0045] Some directional words are defined in the present invention. Unless otherwise specified, the directional words used, such as "up", "down", "left", "right", "inside" and "outside", are used for ease of understanding and therefore do not constitute a limitation on the scope of protection of the present invention.

[0046] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0047] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0048] Example 1

[0049] This embodiment 1 provides a drive system, which exists in a complete system, for example, a new energy vehicle system. The input end can be connected to the power supply provided by the complete system to obtain the working power supply, and the output end can be connected to the drive object to provide drive control for the drive object.

[0050] Figure 1 This is a schematic diagram of the structure of a drive system provided in Example 1 of the present invention. Figure 1 As shown, the driving system 100 provided in this embodiment includes a control end 110 and a driving end 120 .

[0051] The control terminal 110 is connected to the driver terminal 120 and is configured to simultaneously send a communication sleep signal and an enable sleep signal to the driver terminal 120 to cause the driver terminal 120 to enter a whole-terminal sleep state, and further to send an enable wake-up signal to the driver terminal 120 to cause the driver terminal 120 to exit the whole-terminal sleep state. The driver terminal 120 is configured to receive the communication sleep signal and the enable sleep signal and enter a whole-terminal sleep state, and further to receive the enable wake-up signal and exit the whole-terminal sleep state.

[0052] The control terminal 110 can be a circuit connected to the entire system where the drive system 100 resides, or it can be part of the entire system circuit. The control terminal 110 can obtain its operating power from the entire system, can work in conjunction with the entire system, and can control the drive terminal 120. The drive terminal 120 can respond to the control of the control terminal 110 to drive and control the connected drive object.

[0053] A communication sleep signal may be a signal sent by the control end 110 to the driver end 120 via communication to notify the driver end 120 that it needs to enter a sleep state. An enable sleep signal may be a signal sent by the control end 110 to the driver end 120 by configuring an enable pin to notify the driver end 120 that it needs to enter a sleep state. An enable wake-up signal may be a signal sent by the control end 110 to the driver end 120 by configuring an enable pin to notify the driver end 120 that it needs to end a sleep state. A whole-end sleep state may be a state in which all components of a circuit enter a sleep state and no longer perform circuit functions.

[0054] When the entire system enters standby mode and wishes to reduce standby power consumption, the control end 110 can, on the one hand, send a communication sleep signal to the driver end 120 via communication, and on the other hand, send an enable sleep signal to the driver end 120 by configuring the enable pin of the driver end 120. When the driver end 120 receives both the communication sleep signal and the enable sleep signal, all circuit components enter a sleep state, thereby achieving a complete sleep state with minimal operating current for the driver end 120. It should be noted that the driver end 120 does not enter a complete sleep state when only the communication sleep signal or the enable sleep signal is received.

[0055] When the driver 120 is in sleep mode, all circuit components within it enter sleep mode, making it unable to communicate with the control 110. Therefore, when the system requires the driver 120 to exit sleep mode, the control 110 can send an enable wake-up signal to the driver by configuring the enable pin of the driver 120. Upon receiving the enable wake-up signal, the driver 120 can resume communication with the control 110, allowing it to receive any signals sent by the control 110.

[0056] The drive system provided in this embodiment is configured to enter sleep mode upon receiving a communication sleep signal and an enable sleep signal at the same time. In the sleep mode, the drive end can end the sleep mode of the entire end by simply sending an enable wake-up signal through the control end of the system. This achieves the goal of controlling the entire drive end circuit to enter sleep mode in the system standby mode while maintaining interaction with the system control so as to be awakened in time. This solves the problem in the prior art that it is difficult to further reduce power consumption in the system standby or motor sleep mode, reduces the sleep power consumption of the motor drive circuit, improves energy utilization, and avoids unnecessary circuit loss and energy consumption.

[0057] Example 2

[0058] This second embodiment further refines the above technical solution. Figure 2 A schematic diagram of a drive system according to the second embodiment of the present invention is shown in FIG. Figure 2 As shown, the driving end 120 may include: a driving control circuit 121 and a power conversion circuit 122 .

[0059] The drive control circuit 121 is connected to the control terminal 110 and the power conversion circuit 122, and is configured to utilize the drive conversion power provided by the power conversion circuit 122 to receive a communication sleep signal, send a control sleep signal to the power conversion circuit 122 based on the communication sleep signal, and enter a control sleep state. The power conversion circuit 122 is connected to the control terminal 110 and the drive control circuit 121, and is configured to receive a sleep enable signal and a control sleep signal, and enter a power sleep state.

[0060] The drive control circuit 121 may be a circuit within the driver end 120 that implements specific functions such as communication, driving control of the driven object, and controlling other circuits including the power conversion circuit 122. The drive conversion power supply may be the power supply that the power conversion circuit 122 converts the input power supply into an output voltage. When in operation, the power conversion circuit 122 can convert the input power supply voltage into a drive conversion power supply that matches the operating voltage of the other circuits within the driver end 120, thereby providing power to each circuit.

[0061] The control sleep signal can be a signal sent by the driver control circuit 121 to the power conversion circuit 122 by configuring an enable pin, notifying the power conversion circuit 122 that it needs to enter a sleep state. The control sleep state can be a state in which all components of the driver control circuit 121 enter a sleep state and no longer perform communication and control functions. The power sleep state can be a state in which all components of the power conversion circuit 122 enter a sleep state and no longer provide drive conversion power to the various circuits of the driver system 100.

[0062] When the entire system enters standby mode and wishes to reduce standby power consumption, the control terminal 110 transmits a communication sleep signal, which can be received by the driver control circuit 121 in the driver terminal 120 for implementing the communication function. Upon receiving the communication sleep signal, the driver control circuit 121 first performs a control function, configures the enable pin of the power conversion circuit 122, and sends a control sleep signal to it. After completing the control function, the driver control circuit 121 itself enters a control sleep state, reducing its own power consumption to a minimum.

[0063] At the same time, the control end 110 can send an enable sleep signal to the driver end 120 by configuring the enable pin of the power conversion circuit 122. The enable pin of the power conversion circuit 122 receives the configuration of both the drive control circuit 121 and the control end 110. Upon receiving both the control sleep signal and the enable sleep signal, the driver end 120 can enter a power sleep state, no longer performing the voltage conversion function, and stopping providing drive conversion power to the various circuits of the driver end 120. Therefore, the driver end 120 can enter a whole-end sleep state at this time, reducing overall power consumption to a minimum.

[0064] It should be noted that if the control terminal 110 only sends the sleep enable signal but not the communication sleep signal, the drive control circuit 121 will not send the control sleep signal to the power conversion circuit 122 and will not enter the control sleep state. The power conversion circuit 122 cannot receive both the sleep enable signal and the control sleep signal simultaneously and will not enter the power sleep state, thus preventing the driver 120 from reducing its power consumption.

[0065] Alternatively, the control terminal 110 may only send a communication sleep signal to the driver control circuit 121, without configuring the enable pin of the power conversion circuit 122 to send an enable sleep signal. In this case, although the driver control circuit 121 can send a control sleep signal to the power conversion circuit 122 before entering the control sleep state, because the power conversion circuit 122 does not simultaneously receive the enable sleep signal, it will not enter the power sleep state and can continue to provide drive conversion power to the various circuits of the driver terminal 120. In this case, only the driver control circuit 121 can enter the control sleep state, and its own power consumption is reduced to a minimum, thereby reducing the overall power consumption of the driver terminal 120.

[0066] Optionally, the drive control circuit 121 can specifically configure the enable pin of the power conversion circuit 122 to be low level to send a control sleep signal. The control terminal 110 can specifically configure the enable pin of the power conversion circuit 122 to be low level to send an enable sleep signal. When the enable pin of the power conversion circuit 122 is configured to be low level by both the drive control circuit 121 and the control terminal 110, it is configured to be low level, and the control power conversion circuit 122 enters a power sleep state. When the enable pin of the power conversion circuit 122 is configured to be high level by either or both of the drive control circuit 121 and the control terminal 110, it is configured to be high level, and the control power conversion circuit 122 does not enter a power sleep state, and can continue to provide drive conversion power to various circuits of the drive terminal 120.

[0067] Optionally, the power conversion circuit 122 can also be used to receive an enable wake-up signal and enter a power wake-up state, providing a drive conversion power supply to the drive control circuit 121 so that the drive end 120 ends the whole-end sleep state and enters the whole-end standby state.

[0068] The power awake state may be a state in which the power conversion circuit 122 can perform circuit functions, convert the voltage of the input power supply, and provide the driving conversion power required for the operation of the various circuits of the driver end 120. The entire end standby state may be a state in which the various circuits of the driver end 120 have restored power supply, are performing circuit functions, and / or are waiting to receive signals to perform corresponding circuit functions according to the signals.

[0069] When the driver end 120 is in the sleep state of the entire machine, the power conversion circuit 122 no longer provides the drive conversion power to the drive control circuit 121, and the control end 110 cannot directly wake up the drive control circuit 121 by communication. Therefore, it is necessary to first control the power conversion circuit 122 to restore to the working state and provide the drive conversion power to the drive control circuit 121. In this case, the control end 110 can configure the enable pin of the power conversion circuit 122 again to send an enable wake-up signal. After receiving the enable wake-up signal, the power conversion circuit 122 can enter the power wake-up state and start providing drive conversion power to each part of the circuit of the driver end 120 including the drive control circuit 121. Then, each part of the circuit can resume the power supply state, and the driver end 120 enters the whole-end standby state. At this time, the drive control circuit 121 can communicate with the control end 110 by using the drive conversion power.

[0070] Optionally, the control terminal 110 can specifically configure the enable pin of the power conversion circuit 122 to be high to send an enable wake-up signal. For the power conversion circuit 122 in the power sleep state, its enable pin is in a low state. When the control terminal 110 sets the enable pin to a high state, the enable pin can be restored to a high state, and the power conversion circuit 122 enters the power wake-up state.

[0071] The above embodiment provides a method for waking up the power conversion circuit 122 when the driving end 120 is in a whole-end sleep state, thereby restoring the power supply of the power conversion circuit 122 to the driving end 120, to ensure that the control end 110 can control the driving end 120 to re-enter the working state and perform the driving control function on the driven object.

[0072] Optionally, the control end 110 can also be used to send a communication wake-up signal to the drive control circuit 121 after sending the enable wake-up signal; the drive control circuit 121 can also be used to utilize the drive conversion power supply to receive the communication wake-up signal and enter the drive wake-up state, so that the drive end 120 enters the whole end wake-up state.

[0073] The communication wake-up signal can be a signal sent by the control terminal 110 to the driver control circuit 121 via communication to notify the driver control circuit 121 that it needs to end its sleep state. The driver wake-up state can be a state in which the driver control circuit 121 can perform communication and control functions, controlling various circuit components of the driver terminal 120, including the power conversion circuit 122, to enable the driver terminal 120 to perform its circuit functions. The entire terminal wake-up state can be a state in which the driver terminal 120 performs its circuit functions, which is the state with the highest overall power consumption.

[0074] The above embodiment provides a method for further waking up the drive control circuit 121 when the drive end 120 is in the whole-end standby state, so that the drive end 120 can quickly resume the working state and perform the drive control function on the driven object.

[0075] Optionally, the driving system 100 may further include: a first diode and a second diode.

[0076] The anode of the first diode is connected to the control terminal 110, and the cathode is connected to the power conversion circuit 122, for transmitting the enable sleep signal and the enable wake-up signal. The anode of the second diode is connected to the drive control circuit 121, and the cathode is connected to the power conversion circuit 122, for transmitting the control sleep signal.

[0077] Both the control terminal 110 and the driver control circuit 121 need to be electrically connected to the enable pin of the power conversion circuit 122 to configure them. Therefore, the first diode and the second diode can control the transmission direction of the electrical signal passing through the circuit, thereby ensuring that the enable sleep signal and the enable wake-up signal can be transmitted from the control terminal 110 to the power conversion circuit 122 through the first diode without being transmitted to the driver control circuit 121 through the second diode, and the control sleep signal can be transmitted to the power conversion circuit 122 through the second diode without being transmitted to the control terminal 110 through the first diode.

[0078] The above-mentioned embodiments provide devices and designs for controlling the direction of signal transmission in a circuit, which makes the circuit structure simple and highly reliable.

[0079] Optionally, the drive system 100 may further include: a control bus.

[0080] The control terminal 110 and the drive control circuit 121 are respectively connected to a control bus to transmit a communication sleep signal. The control bus can be a line for implementing a bus communication function, and the control terminal 110 and the drive control circuit 121 can implement signal transmission based on the bus communication.

[0081] The above embodiment provides a communication method between the control terminal 110 and the drive control circuit 121, so that the circuit design is adaptable to any system with bus communication, ensuring the adaptability of the drive system 100 to application scenarios.

[0082] Optional, Figure 3 This is a structural diagram of another drive system provided in the second embodiment of the present invention. Figure 3 As shown, the control end 110 can be a complete vehicle system, the drive end 120 can be a water pump driver, the drive control circuit 121 can include an MCU (Microcontroller Unit) and a Motor Driver module, and the power conversion circuit 122 can be a DC / DC voltage conversion circuit. The system also includes a battery that provides a 24V input voltage to the VIN pin of the DC / DC voltage conversion circuit. After the DC / DC voltage conversion circuit performs voltage conversion, the output voltage VDD is output through the VOUT pin, which is then input to the VDD pins of the MCU and Motor Driver modules to power them.

[0083] The vehicle system sends a communication signal to the MCU via the CAN Bus (Controller Area Network Bus), which can be a communication sleep signal or a communication wake-up signal. On the other hand, the water pump enable signal ENABLE is sent to the enable pin EN of the DC / DC voltage conversion circuit via an anti-reverse diode, which can be an enable sleep signal or an enable wake-up signal. Figure 4 This is a schematic diagram of the structure of a bus communication circuit provided by the second embodiment of the present invention. Figure 4 As shown, the communication circuit includes an interface terminal CN1, including pins 1 and 2 as CANH and CANL pins, respectively, for implementing bus communication. Interface terminal CN1 also includes pin 5 as an ENABLE pin, which can be connected to the enable pin EN of the DC / DC voltage conversion circuit through diode D20.

[0084] The MCU receives the communication signal sent by the vehicle system through the CAN Bus and responds, which may include sending a control enable signal EN to the enable pin EN of the DC / DC voltage conversion circuit through the GPIO (General-Purpose Input / Output) pin and the anti-reverse diode. The default value of the control enable signal Default can be set to 0 to quickly put the DC / DC voltage conversion circuit into sleep mode. Figure 5 This is a schematic diagram of the structure of an MCU main control chip circuit provided by the second embodiment of the present invention. Figure 5 As shown, MCU chip U4 includes pins 47 and 46, which serve as CAN RXD and CAN TXD pins, respectively, for receiving and transmitting signals in bus communication. MCU chip U4 also includes pin 34, which is connected to the enable pin EN of the DC / DC voltage conversion circuit through diode D19.

[0085] The DC / DC voltage conversion circuit receives control from both the vehicle system and the MCU via the enable pin EN. Figure 6 This is a schematic diagram of the structure of a DC / DC voltage conversion circuit provided by the second embodiment of the present invention. Figure 6 As shown, the voltage conversion chip U1 includes pin 3, which serves as an enable pin EN.

[0086] Optional, Figure 7-9 The working principle diagram of the drive system provided in the second embodiment of the present invention only shows the part that performs specific functions and omits the Motor Driver module. Figure 7As shown in the figure, when the water pump enable signal ENABLE sent by the vehicle system to the enable pin EN of the DC / DC voltage conversion circuit through the diode is 0, and the control enable signal EN sent by the MCU to the enable pin EN of the DC / DC voltage conversion circuit through the GPIO pin is 1, that is, the vehicle system sends only the enable sleep signal but not the communication sleep signal, the MCU works normally and sends the control wake-up signal, at this time the DC / DC voltage conversion circuit continues to work, providing the MCU with the converted 5V working voltage, the MCU also works normally, and the overall power consumption of the circuit is the highest. Figure 8 As shown in the figure, when the water pump enable signal ENABLE sent by the vehicle system is 1 and the communication sleep signal is sent to the MCU at the same time, the control enable signal EN sent by the MCU is 0, that is, the vehicle system sends the enable wake-up signal and the communication sleep signal, and the MCU responds to the communication sleep signal by sending the control sleep signal. At this time, the MCU enters the control sleep state, and the DC / DC voltage conversion circuit continues to work, providing the MCU with the converted 5V working voltage so that the MCU can be awakened by this voltage. At this time, the overall power consumption of the circuit is reduced. Figure 9 As shown in the figure, when the vehicle system sends the water pump enable signal ENABLE to 0 and simultaneously sends the communication sleep signal to the MCU, the MCU also sends the control enable signal EN to 0. That is, the vehicle system sends both the enable sleep signal and the communication sleep signal, and the MCU responds to the communication sleep signal by sending the control sleep signal. At this time, both the MCU and the DC / DC voltage conversion circuit enter sleep mode, minimizing overall circuit power consumption.

[0087] The drive system provided in this embodiment is configured to enter sleep mode upon receiving a communication sleep signal and an enable sleep signal at the same time. In the sleep mode, the drive end can end the sleep mode of the entire end by simply sending an enable wake-up signal through the control end of the system. This achieves the goal of controlling the entire drive end circuit to enter sleep mode in the system standby mode while maintaining interaction with the system control so as to be awakened in time. This solves the problem in the prior art that it is difficult to further reduce power consumption in the system standby or motor sleep mode, reduces the sleep power consumption of the motor drive circuit, improves energy utilization, and avoids unnecessary circuit loss and energy consumption. At the same time, it achieves a simple circuit design and signal transmission process, further improving the reliability and efficiency of the circuit.

[0088] Example 3

[0089] The third embodiment provides a driving method, which is executed by the driving system provided by any embodiment of the present invention. The driving method can be applied to the case where the power consumption of the driving system is sufficiently reduced when the entire system is in a dormant state. Figure 10 This is a flow chart of a driving method provided in the third embodiment of the present invention. Figure 10 As shown, the method may specifically include:

[0090] Step 310: Send a communication sleep signal and a sleep enable signal to the driver via the control terminal simultaneously;

[0091] Step 320: Receive the communication sleep signal and the sleep enable signal through the driver end, and enter the whole end sleep state;

[0092] Step 330: Sending an enable wake-up signal to the driver via the control terminal;

[0093] Step 340: The driver receives the wake-up enable signal and ends the sleep state of the entire terminal.

[0094] Optionally, receiving a communication sleep signal and an enable sleep signal through the driving end and entering a whole-end sleep state may include: receiving a communication sleep signal through the driving control circuit of the driving end, utilizing a driving conversion power provided by the power conversion circuit of the driving end, sending a control sleep signal to the power conversion circuit according to the communication sleep signal, and entering a control sleep state; receiving an enable sleep signal and a control sleep signal through the power conversion circuit, and entering a power sleep state.

[0095] Optionally, receiving an enable wake-up signal through the driving end and ending the sleep state of the entire end may include: receiving an enable wake-up signal through the power conversion circuit and entering the power wake-up state, providing a driving conversion power supply to the driving control circuit, so that the driving end ends the sleep state of the entire end and enters the standby state of the entire end.

[0096] Optionally, after sending an enable wake-up signal to the driving end through the control end, it can also include: sending a communication wake-up signal to the driving control circuit through the control end; using the driving control circuit to convert the power supply, receiving the communication wake-up signal and entering the driving wake-up state, so that the driving end enters the whole-end wake-up state.

[0097] The driving method provided in this embodiment sets the driving end to enter sleep mode when it receives a communication sleep signal and an enable sleep signal at the same time. In the sleep mode, the driving end can end the sleep mode of the entire end by only sending an enable wake-up signal through the control end of the system. This realizes the control of the entire driving end circuit to enter sleep mode in the system standby mode, while maintaining interaction with the system control so as to be awakened in time. This solves the problem in the prior art that it is difficult to further reduce the power consumption in the system standby or motor sleep mode, reduces the sleep power consumption of the motor driving circuit, improves energy utilization, and avoids unnecessary circuit loss and energy consumption.

[0098] Although the present invention has been described in detail above using general explanations, specific embodiments, and experiments, it will be apparent to those skilled in the art that modifications and improvements may be made based on the present invention. Therefore, such modifications and improvements, which do not depart from the spirit of the present invention, are intended to be within the scope of protection claimed herein.

Claims

1. A drive system, characterized in that: include: Control end and drive end; The control end is connected to the driving end and is used to send a communication sleep signal and an enable sleep signal to the driving end at the same time to make the driving end enter the whole-end sleep state, and is also used to send an enable wake-up signal to the driving end to make the driving end end the whole-end sleep state; The driving end is used to receive the communication sleep signal and the enable sleep signal and enter the whole-end sleep state, and is also used to receive the enable wake-up signal and end the whole-end sleep state.

2. The drive system according to claim 1, characterized in that The driving end includes: a driving control circuit and a power conversion circuit; The drive control circuit is connected to the control terminal and the power conversion circuit respectively, and is used to use the drive conversion power provided by the power conversion circuit to receive the communication sleep signal, send a control sleep signal to the power conversion circuit according to the communication sleep signal, and enter a control sleep state; The power conversion circuit is connected to the control terminal, and is used for receiving the sleep enable signal and the sleep control signal, and entering a power sleep state.

3. The drive system according to claim 2, characterized in that: The power conversion circuit is further used to receive the enable wake-up signal and enter the power wake-up state, providing the drive conversion power to the drive control circuit, so that the drive end ends the whole-end sleep state and enters the whole-end standby state.

4. The drive system according to claim 3, characterized in that: The control end is further configured to send a communication wake-up signal to the drive control circuit after sending the enable wake-up signal; The drive control circuit is further configured to utilize the drive conversion power supply to receive the communication wake-up signal and enter a drive wake-up state, so that the drive end enters a whole-end wake-up state.

5. The drive system according to claim 2, characterized in that: Also includes: a first diode and a second diode; The anode of the first diode is connected to the control terminal, and the cathode is connected to the power conversion circuit, and is used to transmit the enable sleep signal and the enable wake-up signal; The anode of the second diode is connected to the drive control circuit, and the cathode is connected to the power conversion circuit, and is used to transmit the control sleep signal.

6. The drive system according to claim 2, characterized in that: Also includes: Control bus: The control terminal and the drive control circuit are respectively connected to the control bus to transmit the communication sleep signal.

7. A driving method, characterized in that: The method is performed by the drive system according to any one of claims 1 to 6, comprising: Sending a communication sleep signal and an enable sleep signal to the driver through the control end at the same time; Receiving the communication sleep signal and the enable sleep signal through the driver end, and entering a whole-end sleep state; Sending an enable wake-up signal to the driver via the control terminal: The enable wake-up signal is received through the driving end, and the sleep state of the entire end is ended.

8. The driving method according to claim 7, wherein: The receiving of the communication sleep signal and the enable sleep signal by the driving end and entering the whole end sleep state includes: The driving control circuit of the driving end receives the communication sleep signal by using the driving conversion power provided by the power conversion circuit of the driving end, sends a control sleep signal to the power conversion circuit according to the communication sleep signal, and enters a control sleep state; The power conversion circuit receives the sleep enable signal and the sleep control signal, and enters a power sleep state.

9. The driving method according to claim 8, wherein: The step of receiving the enable wake-up signal through the driver end and ending the sleep state of the entire end includes: The power conversion circuit receives the enable wake-up signal and enters the power wake-up state, providing the drive conversion power to the drive control circuit, so that the drive end ends the whole-end sleep state and enters the whole-end standby state.

10. The driving method according to claim 9, wherein: After the control end sends the enable wake-up signal to the driving end, the method further includes: Sending a communication wake-up signal to the drive control circuit via the control terminal; The drive control circuit utilizes the drive conversion power supply to receive the communication wake-up signal and enter the drive wake-up state, so that the drive end enters the whole-end wake-up state.

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