Electric vehicle standby control circuit, control method and electric vehicle

Abstract

The invention discloses an electric vehicle standby control circuit, a control method and an electric vehicle. The electric vehicle standby control circuit comprises a power supply module; the electric door lock provides a first power-on control signal for the power supply module and controls the power supply module to execute power-on; the whole vehicle control unit is provided with an input / output interface, and the input / output interface is connected with the control end of the power supply module; the whole vehicle control unit is configured to obtain an electric door lock opening and closing state of the electric door lock and electric quantity detection demand data, when the electric door lock opening and closing state is in a turn-off state, the input / output interface is set to be in an output state, and a second power-on control signal is provided for the power module according to the electric quantity detection demand data; and controlling the power supply module to execute power-on or power-off. According to the technical scheme, the electric door lock and the whole vehicle control unit are adopted to control the power-on / power-off of the power supply module, additional circuit components are not needed, the standby power consumption and the circuit complexity of the whole vehicle are reduced, and occupation of control ports is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicles, and in particular to an electric vehicle standby control circuit, a control method and an electric vehicle. Background Art

[0002] The electric vehicle controller is the core component of the electric vehicle. In an electric vehicle controller with integrated SOC calculation function, it is necessary to monitor the battery power information of the electric vehicle in real time and send power information to other on-board components at regular intervals, requiring the controller to be in a powered standby state for a long time. In order to reduce standby power consumption, the power supply of circuits other than the SOC calculation-related circuits is usually disconnected after the electric door lock of the electric vehicle is disconnected, such as disconnecting the power supply of the electric vehicle handle, motor position sensor and other parts.

[0003] In the prior art, vehicle-mounted components are usually powered by a 5V power supply, and the 5V power supply of an electric vehicle is controlled by the electric door lock switch, that is, when the electric door lock switch is closed, the 5V power supply is powered on; when the electric door lock switch is disconnected, the 5V power supply is powered off. In standby mode, the electric door lock switch is disconnected, the 5V power supply is powered off, and the controller cannot send battery power information to other vehicle-mounted components. When the battery power information needs to be sent, the 5V power supply is powered on by the controller or an external electronic switch. There are the following problems: In the solution of using a controller to control the 5V power supply to power on, the control port of the controller needs to be additionally occupied, which easily causes the problem of insufficient controller ports; in the solution of using an external electronic switch to control the 5V power supply to power on, each time the battery power information needs to be obtained, the electronic switch is closed to control the 5V power supply to power on, which causes the problem of increasing the complexity of other components, resulting in an increase in the cost of the entire machine. Summary of the invention

[0004] The present invention provides an electric vehicle standby control circuit, a control method and an electric vehicle invention name to solve the problem that the existing motor controller needs to occupy the control port of the controller additionally or needs to add other electronic switches to realize the power detection function in the standby mode, thereby reducing the standby power consumption.

[0005] According to one aspect of the present invention, there is provided an electric vehicle standby control circuit, comprising:

[0006] Power module;

[0007] The electric door lock is arranged between the positive terminal of the battery of the electric vehicle and the control terminal of the power module, and is used to provide a first power-on control signal to the power module to control the power module to perform power-on;

[0008] The vehicle control unit is provided with an input / output interface, and the input / output interface is connected to the control end of the power module;

[0009] The vehicle control unit is configured to: obtain the electric door lock switch status and power detection requirement data of the electric door lock, and when the electric door lock switch status is in the off state, set the input / output interface to the output state, and provide a second power-on control signal to the power module according to the power detection requirement data to control the power module to power on or off.

[0010] Optionally, the electric vehicle standby control circuit further includes: a functional circuit, the functional circuit being connected to the input / output interface;

[0011] The vehicle control unit is also configured to: when the electric door lock switch is in the on state, set the input / output interface to the input state and receive the functional input signal provided by the functional circuit.

[0012] Optionally, the functional circuit includes a first resistor, a second resistor and a first capacitor;

[0013] A first end of the first resistor is connected to a first internal power supply end, a second end of the first resistor is connected to a first end of the second resistor, and a second end of the second resistor is connected to a function input interface; a first node is provided between the first resistor and the second resistor, and the first node is used to receive the function input signal;

[0014] A first end of the first capacitor is connected to the function input interface, and a second end of the first capacitor is grounded; a second node is provided between the first capacitor and the second resistor;

[0015] The second node is connected to the control terminal of the power module via a third resistor;

[0016] The first internal power supply terminal provides a maintenance voltage to the power module via the first resistor, the second resistor and the third resistor, and the maintenance voltage is greater than a conduction voltage threshold of the power module.

[0017] Optionally, the vehicle control unit is configured to: when the electric door lock switch is in the off state and the power module remains powered on, provide a third power-on control signal to the power module to control the power module to power off.

[0018] Optionally, the electric vehicle standby control circuit further includes: an electric door lock detection unit, used for collecting detection data of the electric door lock;

[0019] The vehicle control unit is also connected to the electric door lock detection unit. The vehicle control unit is configured to receive detection data provided by the electric door lock detection unit and determine the switch state of the electric door lock according to the detection data.

[0020] Optionally, the power module includes: a power control unit and an output unit;

[0021] The power control unit is used to control the conduction or disconnection between the output unit and the second internal power supply terminal;

[0022] The power control unit includes a first switch, a second switch, a fourth resistor, a fifth resistor, a sixth resistor and a seventh resistor;

[0023] The control end of the first switch is connected to the electric door lock and the input / output interface respectively, a fourth resistor is provided between the control end of the first switch and the electric door lock, the control end of the first switch is grounded via a fifth resistor, the first end of the first switch is connected to the control end of the second switch via a sixth resistor, and the second end of the first switch is grounded;

[0024] A first end of the second switch is connected to the second internal power supply end, and a second end of the second switch is connected to the output unit;

[0025] The seventh resistor is electrically connected between the first end of the second switch and the control end of the second switch.

[0026] Optionally, the first switch is an NPN transistor; the second switch is a P-type MOS tube.

[0027] Optionally, any one of the electric vehicle standby control circuits provided in the embodiments of the present invention further includes: a communication unit;

[0028] The communication unit is connected to the vehicle control unit;

[0029] The vehicle control unit is configured to: obtain the wake-up cycle and data forwarding progress of the communication unit, determine the first power detection requirement data according to the wake-up cycle, determine the second power detection requirement data according to the data forwarding progress, and adjust the level state of the second power-on control signal according to the first power detection requirement data and the second power detection requirement data.

[0030] According to another aspect of the present invention, a method for controlling standby of an electric vehicle is provided. The method is implemented based on any one of the standby control circuits of an electric vehicle provided in an embodiment of the present invention. The method includes:

[0031] When the electric door lock provides a first power-on control signal to the power module, the power module is controlled to perform power-on;

[0032] When the electric door lock switch state of the electric door lock is in the off state, a second power-on control signal is provided to the power module according to the power detection requirement data to control the power module to perform power-on or power-off.

[0033] According to another aspect of the present invention, there is provided an electric vehicle comprising: the above-mentioned electric vehicle standby control circuit.

[0034] The technical solution of the embodiment of the present invention realizes power-on / power-off control of the power module by controlling port multiplexing of the control unit and dual-channel control of the electric door lock and the control unit, thereby solving the problem that the existing motor controller needs to occupy the control port of the controller additionally or needs to add other electronic switches to realize the power detection function in standby mode, thereby reducing standby power consumption.

[0035] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0037] Figure 1 It is a structural schematic diagram of an electric vehicle standby control circuit provided by an embodiment of the present invention;

[0038] Figure 2 is a circuit schematic diagram of an electric vehicle standby control circuit provided by an embodiment of the present invention;

[0039] Figure 3 The figure is a flow chart of a standby control method for an electric vehicle provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0040] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0041] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0042] Figure 1 is a schematic diagram of a structure of an electric vehicle standby control circuit provided by an embodiment of the present invention. Figure 1 As shown, the electric vehicle standby control circuit includes: a power module 10, an electric door lock 11 and a vehicle control unit 12.

[0043] Among them, the power module 10 can be understood as a module responsible for outputting a power supply voltage to at least some of the vehicle-mounted components outside the vehicle control unit 12. When the power module 10 receives a power-on control signal, it outputs a stable power supply voltage and current to the outside. The power supply voltage output by the power module 10 is determined based on the rated operating voltage of the vehicle-mounted components. Exemplarily, the power module 10 is used to output a DC 5V power supply voltage.

[0044] The electric door lock 11 is arranged between the positive terminal + of the battery of the electric vehicle and the control terminal of the power module 10, and is used to provide a first power-on control signal to the power module 10 to control the power module 10 to perform power-on. Among them, the electric door lock 11 can be understood as a switch that controls the power supply of the positive output terminal of the battery; the first power-on control signal can be understood as a level signal sent by the electric door lock 11 to the power module 10. Taking the power module 10 as a high-level trigger as an example, when the electric door lock 11 is in the on state, the first power-on control signal provided to the power module 10 is a high-level signal, and the power module 10 is controlled to output power to the outside; when the electric door lock 11 is in the off state, the first power-on control signal provided to the power module 10 is a low-level signal, at this time, the electric door lock 11 cannot control the power module 10 to power on or off.

[0045] The vehicle control unit 12 is provided with an input / output interface I / O, and the input / output interface I / O is connected to the control end of the power module 10. The vehicle control unit 12 can be understood as the core electronic control unit of the electric vehicle, which is responsible for managing and coordinating various functions of the vehicle, including but not limited to: drive motor control, battery power detection, battery power display and other functions. The input / output interface I / O can be understood as a multiplexed interface, that is, the input / output interface I / O can work in the input state for receiving input signals, or work in the output state for outputting signals to the outside.

[0046] The vehicle control unit 12 of the present application is configured to: obtain the electric door lock switch state and power detection requirement data of the electric door lock 11, and when the electric door lock switch state is in the off state, set the input / output interface I / O to the output state, and provide a second power-on control signal to the power module 10 according to the power detection requirement data, to control the power module 10 to execute power on or power off.

[0047] In this embodiment, the vehicle control unit 12 may integrate an electric door lock state detection function or determine the electric door lock switch state based on detection data provided by an existing electric door lock detection unit.

[0048] In this embodiment, the power detection demand data can be understood as data indicating whether the vehicle-mounted components start or stop transmitting the battery power information. The vehicle control unit 12 can determine the power detection demand data based on the charging detection time, detection frequency, detection cycle, data transmission progress or user-defined data (such as checking power information).

[0049] Specifically, when the electric vehicle is working in standby mode, the vehicle control unit 12 obtains the power door lock switch state of the power door lock 11 and the power detection demand data of other vehicle components in real time. When the power door lock switch state is in the on state, the input / output interface I / O is set to the input state. At this time, the first power-on control signal provided by the power door lock 11 to the power module 10 is a high-level signal, which controls the power module 10 to power on; when the power door lock 11 is in the off state, it switches to the output port, and the vehicle control unit 12 determines whether to start the battery power information transmission according to the power detection demand data. When the battery power information transmission needs to be started, the second power-on control signal is set to a high-level signal to control the power module 10 to power on; when the battery power information transmission stops, the vehicle control unit 12 sets the second power-on control signal to a low-level signal to control the power module 10 to power off.

[0050] The electric vehicle standby control circuit provided by the embodiment of the present invention includes a power module 10, an electric door lock 11 and a vehicle control unit 12. In the electric vehicle standby mode, if the electric door lock 11 is turned on, the electric door lock 11 controls the power module 10 to power on; if the electric door lock 11 is turned off, the vehicle control unit 12 determines whether to start the battery power information transmission based on the power detection demand data. When the battery power information transmission needs to be started, the second power-on control signal is set to a high-level signal to control the power module 10 to power on. Through the above technical solution, the present application solves the problem that the existing motor controller needs to occupy the control port of the controller additionally to realize the power detection function in the standby mode, or needs to add other electronic switches, thereby reducing the standby power consumption.

[0051] Optional, Figure 2 1 is a circuit diagram of an electric vehicle standby control circuit provided by an embodiment of the present invention. Figure 2 As shown, the electric vehicle standby control circuit of the present application also includes: a functional circuit 13, and the functional circuit 13 is connected to the input / output interface I / O of the vehicle control unit 12. In this embodiment, the functional circuit 13 can be understood as a circuit structure that filters the functional input signal provided by the functional input interface and transmits the processed functional input signal to the vehicle control unit 12. Among them, the functional input interface is a configuration interface of any function of the electric vehicle, such as an early warning function or a data interaction function.

[0052] The vehicle control unit 12 is further configured to: when the electric door lock switch is in the on state, set the input / output interface to the input state, and receive the function input signal provided by the function circuit 13.

[0053] Specifically, when the electric door lock 11 changes from the on state to the off state, the functional circuit 13 sends a control signal to the control end of the power module 10 to control the power module 10 to power off. The control unit detects that the electric door lock 11 is turned off, converts the input / output interface to the output port, and controls the control end of the power module 10 to power on. The power module 10 is powered on and off.

[0054] Optional, see Figure 2As shown, the functional circuit 13 includes a first resistor R1, a second resistor R2 and a first capacitor C1; wherein, the first end of the first resistor R1 is connected to the first internal power supply terminal VDD, the second end of the first resistor R1 is connected to the first end of the second resistor R2, and the second end of the second resistor R2 is connected to the function input interface; a first node is provided between the first resistor R1 and the second resistor R2, and the first node is used to receive a function input signal; the first end of the first capacitor C1 is connected to the function input interface, and the second end of the first capacitor C1 is grounded; a second node is provided between the first capacitor C1 and the second resistor R2; the second node is connected to the control end of the power module 10 via the third resistor R3; the first internal power supply terminal VDD provides a maintenance voltage to the power module 10 via the first resistor R1, the second resistor R2 and the third resistor R3, and the maintenance voltage is greater than the on-voltage threshold of the power module 10.

[0055] Among them, the first internal power supply terminal VDD can be understood as a power supply interface connected to the battery of the electric vehicle. In standby mode, the first internal power supply terminal VDD maintains the power supply output. Exemplarily, the first internal power supply terminal VDD can be used to provide a DC 5V power supply voltage. The first resistor R1 is used to limit the current flowing through the circuit to protect the circuit from damage by excessive current. The second resistor R2 is used to determine the voltage level of the functional input signal together with the first resistor R1. The third resistor R3 is used to further limit the current and provide the necessary voltage drop in the functional input signal path to ensure that the signal can be correctly transmitted to the control end of the power module 10. The first capacitor C1 is used to stabilize the voltage input to the functional circuit 13, reduce voltage fluctuations, provide signal decoupling, and ensure the stability and reliability of the signal.

[0056] Specifically, the vehicle control unit 12 continuously monitors the state of the electric door lock 11 to determine whether it is in the off state. When the electric door lock 11 changes from the on state to the off state, the first internal power supply terminal VDD of the functional circuit 13 provides 5V voltage power supply to the first end of the first resistor R1, and the 5V power supply provides a high-level signal to the control end of the power module 10 through the first resistor R1, the second resistor R2 and the third resistor R3. At this time, the power module 10 maintains the power-on state. Through the functional circuit, the functional input signal can be filtered and processed, and at the same time, after the electric door lock 11 is turned off, the power module is self-locked in the power-on state.

[0057] Optionally, the vehicle control unit 12 is configured to provide a third power-on control signal to the power module 10 to control the power module 10 to power off when the electric door lock switch is in the off state and the power module 10 remains powered on.

[0058] Among them, the third power-on control signal can be understood as a control signal sent by the vehicle control unit 12 to the power module 10 when the electric door lock switch state is in the off state, and the control signal is used to control the power module 10 to perform power-off while maintaining the power-on state. Taking the power module 10 using a low-level trigger as an example, when the electric door lock switch state is in the off state and the power module 10 maintains the power-on state, the third power-on control signal is set to a low-level signal.

[0059] Specifically, the vehicle control unit 12 continuously monitors the state of the electric door lock 11 to determine whether it is in the off state. At the same time, the vehicle control unit 12 also monitors the state of the power module 10 to confirm whether it remains powered on after the electric door lock 11 is turned off. When the above two conditions are met at the same time, the vehicle control unit 12 sets the "third power-on control signal" to a low-level signal and sends the "third power-on control signal" to the power module 10. When the received "third power-on control signal" is a low-level signal, the power module 10 performs a power-off operation to cut off the power supply to the vehicle-mounted components connected to the output end of the power module 10 to further reduce power consumption.

[0060] Optionally, the electric vehicle standby control circuit also includes: an electric door lock switch detection unit 14, which is used to collect detection data of the electric door lock 11; wherein the electric door lock switch detection unit 14 can be understood as a circuit or electronic component specifically used to monitor and collect status information of the electric door lock 11.

[0061] The vehicle control unit 12 of the present application is also connected to the electric door lock switch detection unit 14, and the vehicle control unit 12 is configured to: receive detection data provided by the electric door lock switch detection unit 14, and determine the electric door lock switch state according to the detection data.

[0062] Specifically, when the electric vehicle is working in the standby mode, the vehicle control unit 12 continuously monitors the state of the electric door lock 11 through the electric door lock switch detection unit 14. The electric door lock switch detection unit 14 collects the detection data of the switch state of the electric door lock 11 and converts it into a corresponding level signal. When the switch state of the electric door lock 11 changes, the level signal containing the above information is transmitted to the vehicle control unit 12. The vehicle control unit 12 performs logical judgment according to the received detection data. When the electric door lock 11 is in the on state, the electric door lock switch detection unit 14 detects a high level signal and sends a high level detection result to the vehicle control unit 12. When the vehicle control unit 12 receives the high level detection result provided by the electric door lock switch detection unit 14, it recognizes that the electric door lock 11 is in the on state; when the electric door lock 11 is in the off state, the electric door lock switch detection unit 14 detects a low level signal and sends a low level detection result to the vehicle control unit 12. When the vehicle control unit 12 receives the low level detection result provided by the electric door lock switch detection unit 14, it recognizes that the electric door lock 11 is in the off state. By identifying the switch status of the electric door lock through an independently arranged electric door lock switch detection unit, malfunction of the controller and power supply caused by incorrect detection of the switch status of the electric door lock can be avoided, thereby improving circuit reliability.

[0063] Optional, see Figure 2 As shown, the power module 10 includes: a power control unit 101 and an output unit 102;

[0064] The power control unit 101 is used to control the connection or disconnection between the output unit 102 and the second internal power terminal VCC;

[0065] The power control unit 101 includes a first switch L1, a second switch L2, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6 and a seventh resistor R7;

[0066] The control end of the first switch L1 is connected to the electric door lock 11 and the input / output interface respectively, a fourth resistor R4 is provided between the control end of the first switch L1 and the electric door lock 11, the control end of the first switch L1 is grounded via a fifth resistor R5, a first end of the first switch L1 is connected to the control end of the second switch L2 via a sixth resistor R6, and a second end of the first switch L1 is grounded;

[0067] A first end of the second switch L2 is connected to the second internal power supply terminal VCC, and a second end of the second switch L2 is connected to the output unit 102;

[0068] The seventh resistor R7 is electrically connected between the first end of the second switch L2 and the control end of the second switch L2.

[0069] Among them, the output unit 102 of the power module 10 can be understood as a modulation module responsible for outputting power to the outside, which is used to ensure the stability of the power output. The power control unit 101 can be understood as the control end of the power module 10, which is used to control the power on and off state through the control signal sent by the electric door lock 11 and the control circuit. The first switch L1 can be understood as a transistor or a semiconductor device, which is used to control the second switch L2 to be turned on or off based on the control signal provided by the vehicle control unit 12 or the electric door lock 11. The second switch L2 can be understood as a transistor or a semiconductor device, which is used to control the power module 10 to be powered on or off based on the control signal sent by the first switch L1. The fourth resistor R4 is used to limit the current flowing through the control end of the first switch L1 to protect the circuit. The fifth resistor R5 is used to ground the control end of the first switch L1 to ensure signal stability. The sixth resistor R6 is used to transmit the control signal between the first switch L1 and the second switch L2. The seventh resistor R7 is used to limit the current flowing through the control end of the second switch L2 when the second switch L2 is turned on, protecting the second switch L2 from damage caused by excessive current.

[0070] Specifically, when the electric door lock 11 is in the on state, the positive terminal of the battery + applies a high level signal (i.e., the first power-on control signal) to the control end of the first switch L1 via the electric door lock 11 and the fourth resistor R4, and the first switch L1 is turned on, so that the voltage difference between the control end and the first end of the second switch L2 is greater than the turn-on voltage threshold of the second switch L2, and the second switch L2 is turned on. The output unit 102 of the power module 10 supplies power to the vehicle-mounted components connected to the output side.

[0071] When the electric door lock 11 changes from the on state to the off state, the first internal power supply terminal VDD sends a high level signal to the control end of the first switch L1 through the first resistor R1, the second resistor R2, and the third resistor R3, and the power module 10 maintains the power-on state. When the vehicle control unit 12 detects that the electric door lock switch state is in the off state through the electric door lock switch detection unit 14, and the power module 10 maintains the power-on state, it controls the input / output interface I / O to change from the input port to the output port, sends a low level signal (i.e., the second power-on control signal) to the control end of the first switch L1, pulls down the level signal of the control end of the first switch L1, the first switch L1 is turned off, and the power module 10 stops supplying power. When the vehicle control unit 12 decides to start the battery power information transmission according to the power detection demand data, the second power-on control signal is set to a high level signal, the first switch L1 is turned on, and the second switch L2 is turned on. When the detection is completed, the vehicle control unit 12 sets the second power-on control signal to a low level signal to power off the power module, at which time the first switch L1 is turned off and the second switch L2 is turned off.

[0072] Optionally, the first switch L1 is an NPN transistor; the second switch L2 is a P-type MOS transistor.

[0073] The NPN transistor current flows in from the emitter of the first switch L1 and flows out from the collector, and the flow is controlled by the input signal of the base. The P-type MOS transistor source current flows in from the source, passes through the channel, and flows out from the drain, and the flow is controlled by the gate control signal.

[0074] Specifically, when the electric door lock 11 is turned on, the positive terminal + of the battery supplies power to the base and emitter of the first switch L1 via the electric door lock 11 and the fourth resistor R4. The base circuit controls the first switch L1 to be turned on, and the current passes through the emitter and the collector to the gate and source of the second switch L2. Finally, the positive terminal + of the battery supplies power to the external load via the electric door lock 11, the fourth resistor R4, the emitter of the first switch L1, the collector of the first switch L1, the source of the second switch L2, and the drain of the second switch L2.

[0075] Optionally, any one of the electric vehicle standby control circuits provided in the embodiments of the present invention further includes: a communication unit 15;

[0076] The communication unit 15 is connected to the vehicle control unit 12;

[0077] The vehicle control unit 12 is configured to: obtain the wake-up cycle and data forwarding progress of the communication unit 15, determine the first power detection requirement data according to the wake-up cycle, determine the second power detection requirement data according to the data forwarding progress, and adjust the level state of the second power-on control signal according to the first power detection requirement data and the second power detection requirement data.

[0078] The communication unit 15 can be understood as a unit for data communication between control units inside the electric vehicle. The wake-up cycle can be understood as the time interval at which the communication unit 15 wakes up from the low-power sleep mode according to a control signal or a predetermined time interval to check whether there is new communication data or instructions.

[0079] Specifically, the vehicle control unit 12 obtains the information of the wake-up cycle and the data forwarding progress from the communication unit 15, and determines the first power detection requirement data according to the wake-up cycle provided by the communication unit 15. Similarly, the vehicle control unit 12 also determines the second power detection requirement data according to the data forwarding progress, and adjusts the level state of the second power-on control signal.

[0080] Exemplarily, when the electric door lock 11 is in the off state, the vehicle control unit 12 first outputs a high-level control signal according to a predetermined wake-up cycle to control the power module 10 to power on. At this time, the communication unit 15 is powered and sends power data to the vehicle control unit 12. After receiving the power data, the vehicle control system sends a low-level control signal to control the power module 10 to power off.

[0081] Based on the above electric vehicle standby control circuit, the embodiment of the present invention further provides an electric vehicle standby control method. Figure 3 is a flow chart of an electric vehicle standby control method provided by an embodiment of the present invention, such as Figure 3 As shown, the method is implemented based on any one of the electric vehicle standby control circuits provided in the embodiments of the present invention, and includes:

[0082] S110. When the electric door lock provides a first power-on control signal to the power module, the power module is controlled to perform power-on.

[0083] See also Figure 2 When the electric door lock 11 is in a closed state, the vehicle control unit 12 receives a signal from the electric door lock 11 and sends a power-on control signal to the power module 10 through the input / output interface, so that the power module 10 starts to supply power to the external load.

[0084] S120: When the electric door lock switch is in the off state, provide a second power-on control signal to the power module according to the power detection requirement data to control the power module to power on or off.

[0085] Specifically, when the electric door lock 11 is in the off state, the vehicle control unit determines the first power detection demand data and the second power detection demand data according to the wake-up cycle of the communication unit and the data forwarding progress. When there is a power-on demand, the vehicle control unit sets the second power-on control signal to a high level signal, the first switch is turned on, the second switch is turned on, and the power module is powered on; when the detection is completed, the vehicle control unit sets the second power-on control signal to a low level signal, the first switch is turned off, the second switch is turned off, and the power module is powered off.

[0086] The technical solution of the embodiment of the present invention solves the problem that the existing motor controller needs to occupy the control port of the controller additionally or needs to add other electronic switches to realize the power detection function in standby mode through the control port multiplexing of the control unit and the circuit design of dual control of power on and off of the electric door lock and the vehicle control unit, thereby reducing the standby power consumption.

[0087] The embodiment of the present invention further provides an electric vehicle, which includes: the electric vehicle standby control circuit in any of the above embodiments. Since the electric vehicle includes the electric vehicle standby control circuit, and the electric vehicle standby control circuit is used to execute the electric vehicle standby control method, the electric vehicle also has the corresponding functional modules and beneficial effects of the execution method.

[0088] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0089] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An electric vehicle standby control circuit, characterized in that: include: Power module; An electric door lock, arranged between the positive terminal of the battery of the electric vehicle and the control terminal of the power module, for providing a first power-on control signal to the power module to control the power module to perform power-on; A vehicle control unit, provided with an input / output interface, wherein the input / output interface is connected to the control end of the power module; The vehicle control unit is configured to: obtain the electric door lock switch state and power detection requirement data of the electric door lock, and when the electric door lock switch state is in the off state, set the input / output interface to the output state, and provide a second power-on control signal to the power module according to the power detection requirement data to control the power module to power on or off.

2. The electric vehicle standby control circuit according to claim 1, characterized in that: Also includes: a functional circuit connected to the input / output interface; The vehicle control unit is also configured to: when the electric door lock switch is in the on state, set the input / output interface to the input state and receive the functional input signal provided by the functional circuit.

3. The electric vehicle standby control circuit according to claim 2, characterized in that: The functional circuit includes a first resistor, a second resistor and a first capacitor; A first end of the first resistor is connected to a first internal power supply end, a second end of the first resistor is connected to a first end of the second resistor, and a second end of the second resistor is connected to the function input interface; a first node is provided between the first resistor and the second resistor, and the first node is used to receive the function input signal; A first end of the first capacitor is connected to the functional input interface, and a second end of the first capacitor is grounded; a second node is provided between the first capacitor and the second resistor; The second node is connected to the control terminal of the power module via a third resistor; The first internal power supply terminal provides a maintenance voltage to the power module via the first resistor, the second resistor, and the third resistor, and the maintenance voltage is greater than a turn-on voltage threshold of the power module.

4. The electric vehicle standby control circuit according to claim 3, characterized in that: The vehicle control unit is configured to provide a third power-on control signal to the power module to control the power module to power off when the electric door lock switch is in the off state and the power module remains in the powered-on state.

5. The electric vehicle standby control circuit according to claim 1, characterized in that: Also includes: An electric door lock detection unit, used to collect detection data of the electric door lock; The vehicle control unit is also connected to the electric door lock detection unit, and the vehicle control unit is configured to: receive the detection data provided by the electric door lock detection unit, and determine the switch state of the electric door lock according to the detection data.

6. The electric vehicle standby control circuit according to claim 1, characterized in that: The power module comprises: a power control unit and an output unit; The power control unit is used to control the connection or disconnection between the output unit and the second internal power supply terminal; The power control unit includes a first switch, a second switch, a fourth resistor, a fifth resistor, a sixth resistor and a seventh resistor; The control end of the first switch is connected to the electric door lock and the input / output interface respectively, a fourth resistor is provided between the control end of the first switch and the electric door lock, the control end of the first switch is grounded via the fifth resistor, the first end of the first switch is connected to the control end of the second switch via the sixth resistor, and the second end of the first switch is grounded; A first end of the second switch is connected to the second internal power supply end, and a second end of the second switch is connected to the output unit; The seventh resistor is electrically connected between the first end of the second switch and the control end of the second switch.

7. The electric vehicle standby control circuit according to claim 6, characterized in that: The first switch is an NPN transistor; the second switch is a P-type MOS transistor.

8. The electric vehicle standby control circuit according to any one of claims 1 to 7, characterized in that: Also includes: Communication unit; The communication unit is connected to the vehicle control unit; The vehicle control unit is configured to: obtain the wake-up cycle and data forwarding progress of the communication unit, determine the first power detection requirement data according to the wake-up cycle, determine the second power detection requirement data according to the data forwarding progress, and adjust the level state of the second power-on control signal according to the first power detection requirement data and the second power detection requirement data.

9. A standby control method for an electric vehicle, characterized in that: The electric vehicle standby control circuit according to any one of claims 1 to 8 is implemented, and the method comprises: When the electric door lock provides a first power-on control signal to the power module, controlling the power module to perform power-on; When the electric door lock switch state of the electric door lock is in the off state, a second power-on control signal is provided to the power module according to the power detection requirement data to control the power module to perform power-on or power-off.

10. An electric vehicle, characterized in that: include: The electric vehicle standby control circuit according to any one of claims 1 to 8.

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