Control circuit and control method for electronic parking, electronic parking system and vehicle

Abstract

The invention relates to an electronic parking control circuit and method, an electronic parking system and a vehicle. The electronic parking control circuit comprises a trigger detection module, a control module and a driving module. The trigger detection module is used for detecting trigger information of electronic parking; the control module is electrically connected with the trigger detection module and the driving module and used for controlling the working state of the driving module according to the trigger information so as to control the driving state of the parking motor. The working state comprises a dormant state and an awakening state. According to the technical scheme, the working state of the driving module can be controlled based on the triggering information of the electronic parking detected by the triggering detection module, the driving module can be in the awakening state when the electronic parking needs to be carried out, the driving module is in the dormant state when the electronic parking does not need to be carried out, and therefore extra power consumption generated when the electronic parking does not need to be carried out is avoided.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to an electronic parking control circuit, a control method, an electronic parking system and a vehicle. Background Art

[0002] Electronic Parking Brake (EPB) is a modern parking system for cars. The traditional handbrake system stops the vehicle by pulling the handbrake lever, while the EPB system uses electronic control to control the parking and release of the vehicle through buttons or switches.

[0003] The electronic parking system includes a control module, a drive module and a parking motor. The control module drives the parking motor through the drive module, thereby achieving the purpose of electronic parking.

[0004] The electronic parking system in the prior art will keep the driving module at least in a standby state regardless of whether electronic parking is required, which increases the extra power consumption to a certain extent. Summary of the invention

[0005] The embodiments of the present application provide a control circuit, a control method, an electronic parking system and a vehicle for electronic parking, which can control the working state of a driving module based on the trigger information of electronic parking detected by a trigger detection module, and can put the driving module into an awake state when electronic parking is required, and into a sleep state when electronic parking is not required, thereby avoiding additional power consumption when electronic parking is not required, so as to at least partially solve the above-mentioned technical problems.

[0006] In order to achieve the above-mentioned object, according to a first aspect of the present application, there is provided a control circuit for electronic parking, comprising a trigger detection module, a control module and a drive module;

[0007] The trigger detection module is used to detect the trigger information of the electronic parking;

[0008] The control module is electrically connected to the trigger detection module and the drive module respectively, and is used to control the working state of the drive module according to the trigger information to control the driving state of the parking motor; the working state includes a dormant state and a wake-up state.

[0009] Optionally, the trigger detection module includes a switch detection unit and / or a vehicle speed detection unit;

[0010] The switch detection unit is used to detect the switch status information of the electronic parking switch;

[0011] The vehicle speed detection unit is used to detect the vehicle speed information;

[0012] The trigger information includes switch state information and / or vehicle speed information.

[0013] Optionally, the driving module includes a driving control unit and a driving power unit;

[0014] The control module is electrically connected to the driving control unit, and is electrically connected to the driving power unit through the driving control unit, and is used to control the working state of the driving control unit and / or the driving power unit according to the trigger information.

[0015] Optionally, the first control terminal of the control module is electrically connected to the enable terminal of the drive control unit;

[0016] The control module is used to send an enable control signal to the drive control unit according to the trigger information to control the working state of the drive control unit.

[0017] Optionally, the electronic parking control circuit further includes a switch module;

[0018] The first access terminal of the switch module is used to access the working voltage, the second access terminal of the switch module is electrically connected to the power supply terminal of the driving power unit, and the controlled terminal of the switch module is electrically connected to the second control terminal of the control module;

[0019] The control module is used to send a switch control signal to the switch module according to the trigger information, so as to control the working state of the driving power unit through the switch module.

[0020] Optionally, the switch module includes an npn-type transistor and a pnp-type transistor;

[0021] The base of the npn transistor is electrically connected to the second control terminal of the control module, the collector of the npn transistor is electrically connected to the base of the pnp transistor, and the emitter of the npn transistor is used for grounding;

[0022] The emitter of the pnp transistor is used to access the working voltage, and the collector of the pnp transistor is electrically connected to the power supply end of the driving power unit.

[0023] According to a second aspect of the present application, a control method for electronic parking is provided, which is applied to the control circuit for electronic parking in any of the above embodiments; the control method for electronic parking includes:

[0024] Acquiring the trigger information of the electronic parking brake detected by the trigger detection module;

[0025] According to the trigger information, the working state of the driving module is controlled to control the driving state of the parking motor; the working state includes a dormant state and a wake-up state.

[0026] Optionally, the trigger detection module includes a switch detection unit; and according to the trigger information, controlling the working state of the driving module includes:

[0027] Detecting switch state information of the electronic parking switch by a switch detection unit, wherein the trigger information includes the switch state information;

[0028] If the switch status information indicates that the electronic parking switch is in a triggered state, the working state of the control drive module is in a wake-up state;

[0029] If the switch status information indicates that the electronic parking switch is in an untriggered state, the working state of the control drive module is a dormant state.

[0030] Optionally, the trigger detection module includes a vehicle speed detection unit; and according to the trigger information, the working state of the driving module is controlled, including:

[0031] The vehicle speed information of the vehicle is detected by a vehicle speed detection unit, and the trigger information includes the vehicle speed information;

[0032] If the vehicle speed information indicates that the real-time vehicle speed is less than the preset vehicle speed, the working state of the control driving module is set to the awakening state;

[0033] If the vehicle speed information indicates that the real-time vehicle speed of the vehicle is greater than or equal to the preset vehicle speed, the working state of the control driving module is set to a dormant state.

[0034] Optionally, the trigger detection module includes a switch detection unit and a vehicle speed detection unit; and according to the trigger information, the working state of the drive module is controlled, including:

[0035] Detecting switch state information of the electronic parking switch through a switch detection unit and detecting vehicle speed information of the vehicle through a vehicle speed detection unit, wherein the trigger information includes the switch state information and the vehicle speed information;

[0036] If the switch status information indicates that the electronic parking switch is in a triggered state and / or the vehicle speed information indicates that the current real-time vehicle speed is less than a preset vehicle speed, the working state of the control drive module is set to a wake-up state;

[0037] If the switch status information indicates that the electronic parking switch is in an untriggered state and the vehicle speed information indicates that the current real-time vehicle speed is greater than or equal to a preset vehicle speed, the working state of the control drive module is a dormant state.

[0038] Optionally, the driving module includes a driving control unit and a driving power unit, the control module is electrically connected to the driving control unit, and is electrically connected to the driving power unit through the driving control unit; and according to the trigger information, controlling the working state of the driving module includes:

[0039] According to the trigger information, the working state of the drive control unit and / or the drive power unit is controlled.

[0040] Optionally, the first control terminal of the control module is electrically connected to the enable terminal of the drive control unit to control the working state of the drive control unit and / or the drive power unit according to the trigger information, including:

[0041] According to the trigger information, an enable control signal is sent to the drive control unit to control the working state of the drive control unit.

[0042] Optionally, the electronic parking control circuit further includes a switch module; according to the trigger information, the operating state of the drive control unit and / or the drive power unit is controlled, including:

[0043] According to the trigger information, a switch control signal is sent to the switch module to control the working state of the driving power unit through the switch module.

[0044] According to a third aspect of the present application, there is provided an electronic parking system, comprising a parking motor and the electronic parking control circuit in any one of the above embodiments;

[0045] The output end of the drive module is electrically connected to the parking motor.

[0046] According to a fourth aspect of the present application, a vehicle is provided, comprising the electronic parking system in any one of the above embodiments.

[0047] The electronic parking control circuit of the embodiment of the present application can control the working state of the driving module based on the trigger information of the electronic parking detected by the trigger detection module, and can put the driving module into an awake state when electronic parking is required, and into a sleep state when electronic parking is not required, thereby avoiding additional power consumption when electronic parking is not required.

[0048] Other features and advantages of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0050] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same figure numbers represent the same parts in the following description.

[0051] Figure 1 Schematic diagram of the structure of the electronic parking control circuit and the electronic parking system provided in the exemplary embodiment of the present application

[0052] Figure 2 is a schematic diagram of a structure of an electronic parking control circuit in which a trigger detection module provided in an exemplary embodiment of the present application includes a switch detection unit and a vehicle speed detection unit;

[0053] Figure 3 is a structural schematic diagram of an electronic parking control circuit in which a drive module provided in an exemplary embodiment of the present application includes a drive control unit and a drive power unit;

[0054] Figure 4 is a schematic structural diagram of an electronic parking control circuit including a switch module provided in an exemplary embodiment of the present application;

[0055] Figure 5 is a structural schematic diagram of an electronic parking control circuit including a specific structure of a switch module provided in an exemplary embodiment of the present application;

[0056] Figure 6 is a flowchart of a control method for electronic parking provided in an exemplary embodiment of the present application with only a switch state as a judgment condition;

[0057] Figure 7 is a flowchart of a control method for electronic parking provided in an exemplary embodiment of the present application with vehicle speed as the only judgment condition;

[0058] Figure 8 It is a flowchart of a control method for electronic parking provided in an exemplary embodiment of the present application with both the switch state and the vehicle speed as judgment conditions. DETAILED DESCRIPTION

[0059] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0060] According to the first aspect of the present application, Figure 1 As shown, a control circuit for electronic parking is provided, including a trigger detection module, a control module and a drive module, wherein the control module is electrically connected to the trigger detection module and the drive module respectively.

[0061] Among them, the control module includes MCU and the like.

[0062] The trigger detection module is used to detect the trigger information of the electronic parking brake.

[0063] Among them, the trigger information can represent whether the current electronic parking is triggered. If only the electronic parking switch is considered, when the electronic parking switch is in a triggered state (such as being "pulled up"), the corresponding trigger information represents the current electronic parking trigger.

[0064] The control module is used to control the working state of the driving module according to the trigger information to control the driving state of the parking motor; the working state includes a dormant state and a wake-up state.

[0065] Among them, when the trigger information represents the current electronic parking trigger, the control module can control the working state of the drive module to the awake state, so that the drive module can drive the parking motor to complete the corresponding parking operation. At this time, the driving state of the parking motor is "able to be driven".

[0066] Among them, when the trigger information indicates that the current electronic parking is not triggered, the control module can control the working state of the drive module to be a dormant state, so that the drive module cannot drive the parking. At this time, the driving state of the parking motor is "cannot be driven".

[0067] It can be seen that when the electronic parking brake is not triggered, there is no need to drive the parking motor to complete the corresponding parking operation, so that the driving module can be in a dormant state to save power consumption.

[0068] The electronic parking control circuit of the embodiment of the present application can control the working state of the driving module based on the trigger information of the electronic parking detected by the trigger detection module, and can put the driving module into an awake state when electronic parking is required, and into a sleep state when electronic parking is not required, thereby avoiding additional power consumption when electronic parking is not required.

[0069] like Figure 2 As shown, optionally, the trigger detection module includes a switch detection unit or a vehicle speed detection unit, and the trigger information includes switch state information or vehicle speed information.

[0070] The switch detection unit is used to detect the switch status information of the electronic parking switch.

[0071] The electronic parking switch can output different switch signals in a triggered state and an untriggered state, respectively, and the switch detection unit can obtain corresponding switch state information based on the switch signal output by the electronic parking switch. The switch signal output by the electronic parking switch can be directly output to the control module, and the switch detection unit only serves as a communication line between the electronic parking switch and the control module.

[0072] Among them, the electronic parking switch is the main way to trigger electronic parking. When the driver operates the electronic parking switch and it is in the triggered state, the corresponding trigger information indicates that the electronic parking is triggered. When the driver does not operate the electronic parking switch, the electronic parking switch is in the untriggered state, and the corresponding trigger information indicates that the electronic parking is not triggered.

[0073] The vehicle speed detection unit is used to detect the vehicle speed information.

[0074] The vehicle speed detection unit may directly obtain corresponding vehicle speed information based on an ESC (Electronic Stability Control) system.

[0075] Specifically, the ESC system is a vehicle safety system designed to improve the stability and handling performance of the vehicle. The ESC system uses sensors and electronic control units (ECUs) to monitor the dynamic state of the vehicle, including the vehicle's acceleration, steering angle, wheel speed, etc. When the system detects that the vehicle is potentially out of control or sliding, it will take measures to stabilize the vehicle and restore control. Since the ESC system itself can obtain vehicle speed information, in this embodiment, the vehicle speed detection unit only serves as a communication line between the ESC system and the control module, such as a CAN bus.

[0076] Among them, when the vehicle speed is low, such as approaching a parking state, it means that the driver is more likely to actively perform an electronic parking operation, or is more likely to perform a passive electronic parking operation, such as due to door opening, engine shutoff, etc. Door opening and engine shutoff are the same as the driver actively operating the electronic parking switch in a triggered state, and both will trigger electronic parking. Therefore, in this embodiment, the vehicle speed can be used as a judgment condition for whether to wake up the drive module, so as to control the drive module to be in an awake state when the vehicle speed is low, and prepare for parking triggered by door opening and engine shutoff.

[0077] It should be noted that when the vehicle speed is high, the electronic parking switch may be operated to a triggered state due to the driver's emergency braking operation. At this time, it is necessary to make a comprehensive judgment based on both the vehicle speed information and the switch status information. Therefore, in other embodiments, the switch detection unit and the vehicle speed detection unit may exist at the same time.

[0078] like Figure 3 As shown, optionally, the driving module includes a driving control unit and a driving power unit.

[0079] The control module is electrically connected to the drive control unit, and is electrically connected to the drive power unit through the drive control unit, and is used to control the working state of the drive control unit according to the trigger information.

[0080] Among them, the drive control unit is usually a drive chip, etc., the drive power unit is usually a bridge circuit, such as an H-bridge circuit, etc. The drive power unit is used to drive the parking motor to rotate under the drive control of the drive control unit to realize the electronic parking operation.

[0081] Among them, when the driving module is composed of a driving control unit and a driving power unit, the control module can be used to control only the working state of the driving control unit, and keep the driving power unit in an awake state. In this embodiment, although the control module is only used to control the working state of the driving control unit, when it is determined that the control unit is in a dormant state, it cannot output a corresponding driving signal to the driving power unit, so that no current flows through the driving power unit, and it does not generate more power consumption.

[0082] In some examples, in order to make power consumption management more thorough, the control module is used not only to control the working state of the drive control unit, but also to control the working state of the drive power unit, so that when the electronic parking brake is not triggered or there is no need to prepare for a high possibility of triggering, the power consumption of the entire drive module is basically zero.

[0083] In some examples, the control module may also be used only to control the working state of the driving power unit, which can also reduce power consumption to a certain extent.

[0084] like Figure 4 As shown, optionally, the first control terminal IO2 of the control module is electrically connected to the enable terminal EN of the driving control unit.

[0085] The control module is used to send an enable control signal to the drive control unit according to the trigger information to control the working state of the drive control unit.

[0086] In the above embodiments, the driving control unit is usually a driving chip, etc., which can have a corresponding enable terminal EN. The driving control unit can control itself to be in an awake state or a dormant state according to the enable control signal received by its enable terminal EN.

[0087] Specifically, taking only whether the current electronic parking is triggered as an example, when the trigger information obtained by the control module indicates that the electronic parking is triggered, the control module sends an enable control signal indicating awakening to the enable terminal EN of the drive control unit through its first control terminal IO2, so that the drive control unit is in an awake state; when the trigger information obtained by the control module indicates that the electronic parking is not triggered, the control module sends an enable control signal indicating sleep to the enable terminal EN of the drive control unit through its first control terminal IO2, so that the drive control unit is in a sleep state.

[0088] When the driving control unit is in the awake state, the control module may send a corresponding PWM signal to the driving control unit through its output terminal IO1 to control the driving signal output by the driving control unit to the driving power unit.

[0089] like Figure 4 As shown, optionally, the electronic parking control circuit also includes a switch module.

[0090] The first access terminal of the switch module is used to access the working voltage Vbat of the driving power unit, the second access terminal of the switch module is electrically connected to the power supply terminal VDD of the driving power unit, and the controlled terminal of the switch module is electrically connected to the second control terminal IO3 of the control module.

[0091] The control module is used to send a switch control signal to the switch module according to the trigger information, so as to control the working state of the driving power unit through the switch module.

[0092] Since the driving power unit is usually an H-bridge circuit rather than an integrated chip, in this embodiment, the control module can put the driving power unit into a dormant state by controlling the power supply interruption of the driving power unit.

[0093] Specifically, taking only whether the current electronic parking is triggered as an example, when the trigger information obtained by the control module indicates that the electronic parking is triggered, the control module sends a switch control signal indicating conduction to the controlled end of the switch module through its second control terminal IO3, so that the driving power unit can be connected to the power supply, thereby being in a wake-up state; when the trigger information obtained by the control module indicates that the electronic parking is not triggered, the control module sends a switch control signal indicating disconnection to the controlled end of the switch module through its second control terminal IO3, so that the driving power unit cannot be connected to the power supply, thereby being in a sleep state.

[0094] The switch module may be a mechanical switch or a semiconductor switch. The mechanical switch includes a relay, a contactor, etc. The semiconductor switch includes a switch group composed of one or more switch tubes.

[0095] It should be added that both the control module and the drive control unit require corresponding power supplies to work properly. Since the power supply required by the drive power unit has a higher amplitude, it is not suitable for the control module and the drive control unit. Figure 4 In the embodiment, the connected working voltage Vbat needs to be stepped down by the power module before obtaining a power supply with an amplitude suitable for the control module and the drive control unit. The power supply can be output to the power supply terminal VDD of the control module and the power supply terminal VDD of the drive control unit respectively.

[0096] Among them, the power module can use SBC (SBC, System Basis Chip, system basis chip) to realize power processing, such as conversion from 12V to 5V.

[0097] In combination with the above-mentioned specific control methods for the working states of the drive control unit and the drive power unit, it can be understood that in other embodiments, different control methods can be used for the drive control unit and the drive power unit. For example, for the drive control unit, the drive control unit can be put into a dormant state by controlling the power supply interruption of the drive control unit; for another example, for the drive power unit, when the drive power unit adopts the form of an integrated chip, the drive power unit can be put into a dormant state by controlling the enabling of the drive power unit.

[0098] like Figure 5 As shown, optionally, the switch module includes an npn-type transistor Q1 and a pnp-type transistor Q2.

[0099] The base of the npn transistor Q1 is electrically connected to the second control terminal IO3 of the control module through the resistor R1, the collector of the npn transistor Q1 is electrically connected to the base of the pnp transistor Q2 through the resistor R2, and the emitter of the npn transistor Q1 is used for grounding; the emitter of the pnp transistor Q2 is used to connect to the working voltage Vbat, and the collector of the pnp transistor Q2 is electrically connected to the power supply terminal VDD of the driving power unit.

[0100] Among them, when the second control terminal IO3 of the control module outputs a high level, the npn-type transistor Q1 is turned on, the base voltage of the pnp-type transistor Q2 is pulled down, and the pnp-type transistor Q2 is turned on, so that the working voltage Vbat connected to the pnp-type transistor Q2 can be output to the power supply terminal VDD of the driving power unit, and the driving power unit is in a wake-up state. When the second control terminal IO3 of the control module outputs a low level, the npn-type transistor Q1 is turned off, the base voltage of the pnp-type transistor Q2 is not pulled down, and the pnp-type transistor Q2 is turned off, so that the working voltage Vbat connected to the pnp-type transistor Q2 cannot be output to the power supply terminal VDD of the driving power unit, and the driving power unit is in a dormant state.

[0101] Among them, in other embodiments, when the switch module adopts a semiconductor switch, other topological structures can also be adopted, which will not be described in detail here.

[0102] According to a second aspect of the present application, a control method for electronic parking is provided, which is applied to the control circuit for electronic parking in any of the above embodiments; the control method for electronic parking includes:

[0103] Acquiring the trigger information of the electronic parking brake detected by the trigger detection module;

[0104] According to the trigger information, the working state of the driving module is controlled to control the driving state of the parking motor; the working state includes a dormant state and a wake-up state.

[0105] The electronic parking control method of the embodiment of the present application can control the working state of the driving module based on the trigger information of the electronic parking detected by the trigger detection module, and can put the driving module into an awake state when electronic parking is required, and into a sleep state when electronic parking is not required, thereby avoiding additional power consumption when electronic parking is not required.

[0106] Optionally, the trigger detection module includes a switch detection unit; Figure 6 As shown, according to the trigger information, the working state of the driving module is controlled, including:

[0107] Detecting switch state information of the electronic parking switch by a switch detection unit, wherein the trigger information includes the switch state information;

[0108] If the electronic parking switch is "pulled up", that is, the switch status information indicates that the electronic parking switch is in a triggered state, then the working state of the control drive module is the awakening state;

[0109] If the electronic parking switch is "not pulled up", that is, the switch status information indicates that the electronic parking switch is in an untriggered state, the working state of the control drive module is a dormant state.

[0110] Among them, in this embodiment, since only the switch state information of the electronic parking switch is considered, the working state of the drive module is completely dependent on the detected switch state information. It should be noted that under this control logic, as long as the electronic parking switch is detected to be "not pulled up", the working state of the drive module is controlled to be a dormant state, without judging whether the vehicle speed is low.

[0111] Optionally, the trigger detection module includes a vehicle speed detection unit; Figure 7 As shown, according to the trigger information, the working state of the driving module is controlled, including:

[0112] The vehicle speed information of the vehicle is detected by a vehicle speed detection unit, and the trigger information includes the vehicle speed information;

[0113] If the vehicle speed information indicates that the real-time vehicle speed is less than the preset vehicle speed, the working state of the control driving module is set to the awakening state;

[0114] If the vehicle speed information indicates that the real-time vehicle speed of the vehicle is greater than or equal to the preset vehicle speed, the working state of the control driving module is set to a dormant state.

[0115] Among them, the judgment logic based on vehicle speed is different from the switch state in that its core is to determine whether there is a high possibility that the electronic parking will be triggered, rather than to determine whether the electronic parking has been triggered. When the vehicle speed is low, such as approaching the parking state, it is easy to have the door open, the engine turned off, etc., and these situations will trigger the electronic parking. Therefore, by judging the vehicle speed, it is possible to prepare for the electronic parking when these situations occur. For specific details, please refer to the relevant embodiments of the above-mentioned electronic parking control circuit, which will not be repeated here.

[0116] Among them, in this embodiment, since only the vehicle speed information is considered, the working state of the drive module is completely dependent on the detected vehicle speed information. It should be noted that under this control logic, as long as the vehicle speed is detected to be greater than or equal to the preset vehicle speed, the working state of the drive module is controlled to be a dormant state, without determining whether the electronic parking switch is "not pulled up".

[0117] Optionally, the trigger detection module includes a switch detection unit and a vehicle speed detection unit; Figure 8 As shown, according to the trigger information, the working state of the driving module is controlled, including:

[0118] The switch state information of the electronic parking switch is detected by the switch detection unit, and the vehicle speed information of the vehicle is detected by the vehicle speed detection unit. The trigger information includes the switch state information and the vehicle speed information.

[0119] If the switch status information indicates that the electronic parking switch is in a triggered state and / or the vehicle speed information indicates that the current real-time vehicle speed is less than a preset vehicle speed, the working state of the control drive module is a wake-up state.

[0120] Among them, it has been mentioned in the above embodiments that the electronic parking switch being in a triggered state and the vehicle speed being less than a preset speed can both be used as judgment conditions for waking up the drive module. Therefore, in this embodiment, when the two judgment conditions exist at the same time, as long as one of them is met, the control drive module is in a wake-up state.

[0121] If the switch status information indicates that the electronic parking switch is in an untriggered state and the vehicle speed information indicates that the current real-time vehicle speed is greater than or equal to a preset vehicle speed, the working state of the control drive module is a dormant state.

[0122] Among them, since either the electronic parking switch being in a triggered state or the vehicle speed being less than a preset speed can be used alone as a judgment condition for waking up the drive module, it can be used as a judgment condition for the sleep drive module only when neither of the above two conditions is met.

[0123] in, Figure 8In the judgment logic shown, the vehicle speed is judged first and then the switch state is judged. It can be understood that since the vehicle speed and the switch state do not need to be in a substantial order in the judgment logic, in other embodiments, the switch state can be judged first and then the vehicle speed, or the vehicle speed and the switch state can be judged at the same time.

[0124] Optionally, the driving module includes a driving control unit and a driving power unit, the control module is electrically connected to the driving control unit, and is electrically connected to the driving power unit through the driving control unit; and according to the trigger information, controlling the working state of the driving module includes:

[0125] According to the trigger information, the working state of the drive control unit and / or the drive power unit is controlled.

[0126] It has been mentioned in the above embodiments that when the driving module is composed of a driving control unit and a driving power unit, the control module can control the working states of the driving control unit and the driving power unit respectively.

[0127] Optionally, the first control terminal of the control module is electrically connected to the enable terminal of the drive control unit to control the working state of the drive control unit and / or the drive power unit according to the trigger information, including:

[0128] According to the trigger information, an enable control signal is sent to the drive control unit to control the working state of the drive control unit.

[0129] Among them, taking low level as sleep and high level as wake-up as an example, refer to Figure 5 When the drive control unit needs to be controlled in a sleep state, the first control terminal IO2 of the control module sends a low level to the enable terminal EN of the drive control unit; when the drive control unit needs to be controlled in an awake state, the first control terminal IO2 of the control module sends a high level to the enable terminal EN of the drive control unit.

[0130] Optionally, the electronic parking control circuit further includes a switch module; according to the trigger information, the operating state of the drive control unit and / or the drive power unit is controlled, including:

[0131] According to the trigger information, a switch control signal is sent to the switch module to control the working state of the driving power unit through the switch module.

[0132] Among them, Figure 5 Taking the specific structure of the switch module shown as an example, when it is necessary to control the driving power unit to be in a sleep state, the second control terminal IO3 of the control module sends a low level to the base of the npn-type transistor Q1 in the switch module; when it is necessary to control the driving power unit to be in a wake-up state, the second control terminal IO3 of the control module sends a high level to the base of the npn-type transistor Q1 in the switch module.

[0133] According to the third aspect of this application, Figure 1 As shown, an electronic parking system is provided, comprising a parking motor and an electronic parking control circuit in any one of the above embodiments;

[0134] The output end of the drive module is electrically connected to the parking motor.

[0135] The electronic parking system of the embodiment of the present application can control the working state of the driving module based on the trigger information of electronic parking detected by the trigger detection module, and can put the driving module into an awake state when electronic parking is required, and into a sleep state when electronic parking is not required, thereby avoiding additional power consumption when electronic parking is not required.

[0136] According to a fourth aspect of the present application, a vehicle is provided, comprising the electronic parking system in any one of the above embodiments.

[0137] The vehicle of the embodiment of the present application can control the working state of the drive module based on the trigger information of electronic parking detected by the trigger detection module, and can put the drive module into an awake state when electronic parking is required, and into a sleep state when electronic parking is not required, thereby avoiding additional power consumption when electronic parking is not required.

[0138] The vehicle may be a pure fuel vehicle, or a pure electric vehicle, a plug-in hybrid vehicle, an extended-range hybrid vehicle or other new energy vehicle, and this application does not make any specific limitations on this.

[0139] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0140] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0141] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0142] The above are only preferred embodiments of the present application and do not constitute any form of limitation to the present application. In the embodiments of the present application, the description of each embodiment has its own focus. For the parts not described in detail in a certain embodiment, please refer to the relevant contents of other embodiments. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. An electronic parking control circuit, characterized in that: It includes a trigger detection module, a control module and a drive module; The trigger detection module is used to detect the trigger information of the electronic parking; The control module is electrically connected to the trigger detection module and the drive module respectively, and is used to control the working state of the drive module according to the trigger information to control the driving state of the parking motor; the working state includes a dormant state and a wake-up state.

2. The electronic parking control circuit according to claim 1, characterized in that: The trigger detection module includes a switch detection unit and / or a vehicle speed detection unit; The switch detection unit is used to detect the switch state information of the electronic parking switch; The vehicle speed detection unit is used to detect vehicle speed information; The trigger information includes the switch state information and / or the vehicle speed information.

3. The electronic parking control circuit according to claim 1 or 2, characterized in that: The driving module includes a driving control unit and a driving power unit; The control module is electrically connected to the drive control unit, and is electrically connected to the drive power unit through the drive control unit, and is used to control the working state of the drive control unit and / or the drive power unit according to the trigger information.

4. The electronic parking control circuit according to claim 3, characterized in that: The first control terminal of the control module is electrically connected to the enable terminal of the drive control unit; The control module is used to send an enable control signal to the drive control unit according to the trigger information to control the working state of the drive control unit.

5. The electronic parking control circuit according to claim 3, characterized in that: The electronic parking control circuit also includes a switch module; The first access terminal of the switch module is used to access the working voltage, the second access terminal of the switch module is electrically connected to the power supply terminal of the driving power unit, and the controlled terminal of the switch module is electrically connected to the second control terminal of the control module; The control module is used to send a switch control signal to the switch module according to the trigger information, so as to control the working state of the driving power unit through the switch module.

6. The electronic parking brake control circuit according to claim 5, characterized in that: The switch module includes an npn-type transistor and a pnp-type transistor; The base of the npn transistor is electrically connected to the second control terminal of the control module, the collector of the npn transistor is electrically connected to the base of the pnp transistor, and the emitter of the npn transistor is used for grounding; The emitter of the pnp transistor is used to access the working voltage, and the collector of the pnp transistor is electrically connected to the power supply end of the driving power unit.

7. A method for controlling electronic parking, characterized in that: The electronic parking control circuit according to any one of claims 1 to 6; the electronic parking control method comprises: Acquiring the trigger information of the electronic parking brake detected by the trigger detection module; According to the trigger information, the working state of the driving module is controlled to control the driving state of the parking motor; the working state includes a dormant state and a wake-up state.

8. The electronic parking control method according to claim 7, characterized in that: The trigger detection module includes a switch detection unit; and controlling the working state of the driving module according to the trigger information includes: Detecting switch state information of an electronic parking switch by the switch detection unit, wherein the trigger information includes the switch state information; If the switch state information indicates that the electronic parking switch is in a triggered state, controlling the working state of the driving module to be a wake-up state; If the switch state information indicates that the electronic parking switch is in an untriggered state, the working state of the driving module is controlled to be a dormant state.

9. The electronic parking control method according to claim 7, characterized in that: The trigger detection module includes a vehicle speed detection unit; and controlling the working state of the driving module according to the trigger information includes: Detecting vehicle speed information of the vehicle by the vehicle speed detection unit, wherein the trigger information includes the vehicle speed information; If the vehicle speed information indicates that the real-time vehicle speed of the vehicle is less than a preset vehicle speed, controlling the working state of the driving module to be a wake-up state; If the vehicle speed information indicates that the real-time vehicle speed of the vehicle is greater than or equal to a preset vehicle speed, the working state of the driving module is controlled to be a dormant state.

10. The electronic parking control method according to claim 7, characterized in that: The trigger detection module includes a switch detection unit and a vehicle speed detection unit; and controlling the working state of the driving module according to the trigger information includes: The switch detection unit detects the switch state information of the electronic parking switch and the vehicle speed detection unit detects the vehicle speed information, wherein the trigger information includes the switch state information and the vehicle speed information; If the switch state information indicates that the electronic parking switch is in a triggered state and / or the vehicle speed information indicates that the current real-time vehicle speed is less than a preset vehicle speed, the working state of the driving module is controlled to be a wake-up state; If the switch status information indicates that the electronic parking switch is in an untriggered state and the vehicle speed information indicates that the current real-time vehicle speed is greater than or equal to a preset vehicle speed, the working state of the driving module is controlled to be a dormant state.

11. The electronic parking control method according to claim 7, characterized in that: The driving module includes a driving control unit and a driving power unit, the control module is electrically connected to the driving control unit, and is electrically connected to the driving power unit through the driving control unit; controlling the working state of the driving module according to the trigger information includes: According to the trigger information, the working state of the drive control unit and / or the drive power unit is controlled.

12. The electronic parking control method according to claim 11, characterized in that: The first control terminal of the control module is electrically connected to the enable terminal of the drive control unit. The operating state of the drive control unit and / or the drive power unit is controlled according to the trigger information, including: According to the trigger information, an enable control signal is sent to the drive control unit to control the working state of the drive control unit.

13. The electronic parking control method according to claim 11, characterized in that: The electronic parking control circuit further includes a switch module; and controlling the working state of the drive control unit and / or the drive power unit according to the trigger information includes: According to the trigger information, a switch control signal is sent to the switch module to control the working state of the driving power unit through the switch module.

14. An electronic parking system, characterized in that: A parking motor and an electronic parking control circuit according to any one of claims 1 to 6; The output end of the driving module is electrically connected to the parking motor.

15. A vehicle, characterized in that: Includes the electronic parking system as claimed in claim 14.

Images