Wake-up circuit, vehicle-mounted wake-up device and vehicle
By designing a wake-up circuit, integrating tailgate and power-on wake-up signals, the complex problem of the wake-up circuit of new energy vehicles is solved, the circuit is simplified and the reliability of the wake-up function is achieved, and the space occupation and power consumption of the circuit are reduced.
Patent Information
- Application Number
- CN202422653204.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-10-31
AI Technical Summary
In the prior art, the tailgate wake-up signal and power-on wake-up signal of new energy vehicles use different wake-up circuits, which leads to complex circuits and occupy space. How to integrate two wake-up functions in one circuit has become an urgent problem to be solved.
A wake-up circuit is designed, including a first wake-up module and a second wake-up module, integrating the tailgate wake-up signal and the power-up wake-up signal through the wake-up detection port, and locking the wake-up function when the microcontroller unit wakes up through the control signal module to avoid mistransmission.
It realizes the integration of tailgate wake-up signal and power-up wake-up signal in one circuit, streamlines the circuit structure, saves space, and can identify wake-up sources, reduce circuit power consumption, and avoids false wake-up.
Smart Images
Figure CN223217804U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of electronic circuits, and in particular to a wake-up circuit, a vehicle-mounted wake-up device, and a vehicle. Background Art
[0002] New energy vehicles, with their low emissions, low noise, and high energy efficiency, are gradually replacing traditional fuel vehicles and becoming a key option for addressing energy and environmental challenges. However, static power consumption is a key factor hindering the development of new energy vehicles. Therefore, managing and controlling static power consumption in new energy vehicles has become a key research topic to improve energy efficiency and reduce environmental impact.
[0003] The current trend is to use lithium batteries to power the entire vehicle's 12V system. These batteries are equipped with a lithium battery controller for small battery power management. The power management logic is configured so that when the small battery power supply falls below a specified limit, the lithium battery will cut off power to all loads in the vehicle and enter a sleep state. Waking up is accomplished by pressing the tailgate button. However, when the lithium battery is abnormally damaged, an external power supply is required to urgently wake up the controller via a jumper wake-up signal. For each of the two wake-up scenarios mentioned above, corresponding wake-up circuits are typically used to implement the corresponding wake-up functions. With the miniaturization of electronic products today, integrating different wake-up sources into a single circuit to implement their respective wake-up functions is a technical problem that needs to be solved urgently. Utility Model Content
[0004] In order to solve the problem of waking up the microcontroller unit using a tailgate wake-up signal or a power-on wake-up signal, the present application provides the following technical solutions:
[0005] In a first aspect, a wake-up circuit is provided, comprising: a first wake-up module, a second wake-up module;
[0006] The first wake-up module has a first signal input port and a first signal output port;
[0007] The second wake-up module has a second signal input port and a second signal output port;
[0008] The first signal output port is electrically connected to the second signal output port, and a tap at the connection between the first signal output port and the second signal output port serves as a wake-up detection port;
[0009] Among them, the first wake-up module is configured to receive a tailgate wake-up signal based on the first signal input port, and the wake-up detection port outputs a controller wake-up signal; the second wake-up module is configured to receive a power-on wake-up signal based on the second signal input port, and the wake-up detection port outputs a controller wake-up signal.
[0010] Furthermore, the wake-up circuit further includes a control signal module;
[0011] The control signal module has: a first control input port, a second control input port, a first control output port, and a second control output port, and the second wake-up module also has a control signal input port;
[0012] The first control output port is electrically connected to the first signal output port, and the second control output port is electrically connected to the control signal input port.
[0013] Furthermore, the first wake-up module includes: a first transistor, a first diode, a first resistor, a second resistor and a third resistor;
[0014] The first transistor comprises: a first transistor first electrode, a first transistor second electrode, and a first transistor third electrode;
[0015] The first electrode of the first transistor is electrically connected to the anode of the first diode, the cathode of the first diode serves as a first signal input port, the first resistor is connected in parallel between the first electrode of the first transistor and the third electrode of the first transistor, the third electrode of the first transistor is connected to a power supply, the second electrode of the first transistor is connected in series with the second resistor and then to ground, the second electrode of the first transistor is also electrically connected to one end of the third resistor, and the other end of the third resistor serves as a first signal output port.
[0016] Furthermore, the second wake-up module includes: a second transistor, a third transistor, a fourth transistor, a fourth resistor, a fifth resistor, and a sixth resistor;
[0017] The second transistor comprises: a second transistor first electrode, a second transistor second electrode, and a second transistor third electrode;
[0018] The third transistor comprises: a third transistor first electrode, a third transistor second electrode, and a third transistor third electrode;
[0019] The fourth transistor comprises: a fourth transistor first electrode, a fourth transistor second electrode, and a fourth transistor third electrode;
[0020] The third electrode of the second transistor serves as a second signal input port, the fourth resistor is connected in parallel between the first electrode of the second transistor and the third electrode of the second transistor, the second electrode of the second transistor is electrically connected to one end of the fifth resistor, the other end of the fifth resistor serves as a second signal output port, the first electrode of the second transistor is electrically connected to the second electrode of the third transistor, the third electrode of the third transistor is grounded, the first electrode of the third transistor is connected in series with the sixth resistor and then to a power supply, the first electrode of the third transistor is also electrically connected to the second electrode of the fourth transistor, and the third electrode of the fourth transistor is grounded;
[0021] The first electrode of the fourth transistor serves as a control signal input port.
[0022] Furthermore, the second wake-up module further includes: a second diode, an eleventh resistor, a twelfth resistor, and a capacitor;
[0023] The cathode of the second diode is electrically connected to the third pole of the second transistor, the anode of the second diode is electrically connected to the first pole of the second transistor, the first pole of the second transistor is electrically connected to the second pole of the third transistor after being connected in series with the eleventh resistor, the first pole of the third transistor is electrically connected to the second pole of the fourth transistor after being connected in series with the twelfth resistor, one end of the capacitor is electrically connected to the third pole of the second transistor, and the other end of the capacitor is grounded.
[0024] Furthermore, the control signal module includes: a fifth transistor, a seventh resistor, an eighth resistor, and a ninth resistor;
[0025] The fifth transistor has a first electrode of the fifth transistor, a second electrode of the fifth transistor, and a third electrode of the fifth transistor. The second electrode of the fifth transistor serves as a first control output port, the third electrode of the fifth transistor is grounded, the seventh resistor is connected in parallel between the first electrode of the fifth transistor and the third electrode of the fifth transistor, the first electrode of the fifth transistor is also electrically connected to one end of the eighth resistor, and the other end of the eighth resistor serves as a first control input port. The first electrode of the fifth transistor is also electrically connected to one end of the ninth resistor, and the other end of the ninth resistor serves as a second control input port.
[0026] Furthermore, the control signal module further includes: a third diode and a fourth diode;
[0027] The third diode is connected in series between the first electrode of the fifth transistor and the eighth resistor, wherein the cathode of the third diode is electrically connected to the first electrode of the fifth transistor, and the anode of the third diode is electrically connected to one end of the eighth resistor.
[0028] The fourth diode is connected in series between the first electrode of the fifth transistor and the ninth resistor, wherein the cathode of the fourth diode is electrically connected to the first electrode of the fifth transistor, and the anode of the fourth diode is electrically connected to one end of the ninth resistor.
[0029] Furthermore, the wake-up circuit further includes a fifth diode, a sixth diode, and a thirteenth resistor;
[0030] The first signal output port is electrically connected to the second signal output port after the fifth diode and the sixth diode are connected in series in sequence, wherein the anode of the fifth diode is electrically connected to the first signal output port, the cathode of the fifth diode is electrically connected to the cathode of the sixth diode, the anode of the sixth diode is electrically connected to the second signal output port, and the connection point between the fifth diode and the sixth diode is tapped as a wake-up detection port, and the thirteenth resistor is connected in series between the first signal output port and the first control output port.
[0031] Furthermore, the wake-up circuit further includes a wake-up source detection module;
[0032] The wakeup source detection module has a wakeup source input port and a wakeup source output port;
[0033] The wake-up source input port is electrically connected to the first signal output port.
[0034] Further, the wake-up source detection module includes a tenth resistor;
[0035] One end of the tenth resistor serves as a wake-up source input port, and the other end of the tenth resistor serves as a wake-up source output port.
[0036] In a second aspect, a vehicle-mounted wake-up device is provided, comprising the wake-up circuit described in the first aspect.
[0037] Furthermore, the vehicle-mounted wake-up device further includes: a micro control unit, a battery, a micro control unit power supply module, a low-power power supply module, and a high-power power supply module;
[0038] The wake-up circuit is electrically connected to the microcontroller unit, the low-power power supply module, and the high-power power supply module respectively. The microcontroller unit is also electrically connected to the low-power power supply module and the high-power power supply module respectively. The battery is electrically connected to the microcontroller unit power supply module, the low-power power supply module, and the high-power power supply module respectively. The microcontroller unit power supply module is electrically connected to the microcontroller unit.
[0039] In a third aspect, a vehicle is provided, comprising the wake-up circuit described in the first aspect, or the vehicle-mounted wake-up device described in the second aspect.
[0040] The beneficial effects of the technical solution provided by this application are:
[0041] By implementing a wake-up circuit, a vehicle-mounted wake-up device, and a vehicle disclosed in an embodiment of the present application, it is possible to integrate a tailgate wake-up signal and a jump start wake-up signal into one circuit. After the entire vehicle load enters a sleep state, the wake-up signal is transmitted to parts outside the wake-up circuit, thereby streamlining the circuit structure and saving space inside the vehicle occupied by the circuit. BRIEF DESCRIPTION OF THE DRAWINGS
[0042] 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. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0043] Figure 1 This is a schematic diagram of a wake-up circuit module provided in an embodiment of the present application;
[0044] Figure 2 This is a schematic diagram of a first wake-up module circuit provided in an embodiment of the present application;
[0045] Figure 3 This is a schematic diagram of a second wake-up module circuit provided in an embodiment of the present application;
[0046] Figure 4 This is another circuit diagram of a second wake-up module provided in an embodiment of the present application;
[0047] Figure 5 1 is a schematic diagram of a wake-up circuit module including a control signal module provided in an embodiment of the present application;
[0048] Figure 6 This is a schematic diagram of a control signal module circuit provided by an embodiment of the present application;
[0049] Figure 7 This is another circuit diagram of a control signal module provided in an embodiment of the present application;
[0050] Figure 8 1 is a schematic diagram of a wake-up circuit module including a wake-up source detection module provided in an embodiment of the present application;
[0051] Figure 9 This is a schematic diagram of a preferred wake-up circuit module provided in an embodiment of the present application;
[0052] Figure 10 This is a schematic diagram of a vehicle-mounted wake-up device provided in an embodiment of the present application;
[0053] Figure 11 This is a schematic diagram of a wake-up circuit provided in an embodiment of the present application;
[0054] Figure 12 This is another wake-up circuit schematic provided in an embodiment of the present application. DETAILED DESCRIPTION
[0055] To make the purpose, technical solutions, and advantages of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.
[0056] It should be noted that, unless otherwise defined, technical or scientific terms used in this application should have the ordinary meanings understood by persons of ordinary skill in the art to which this application belongs. The terms "upper," "lower," "left," and "right" used in this application are defined based on the orientations or positions shown in the accompanying drawings. They are used solely to indicate relative positional relationships and are intended to facilitate the description of this application and simplify the description. When the absolute position of the described object changes, the relative positional relationships may also change accordingly. They do not indicate or imply that the device described must be constructed and operated in a specific orientation and are therefore not to be construed as limiting this application. The terms "first," "second," and similar terms used in this application are used solely for descriptive purposes to distinguish between different components and should not be construed to indicate or imply any order, relative importance, or quantity of the technical features being described. Similarly, in the description of this application, terms such as "a," "an," or "the" do not indicate a limitation on quantity, but rather indicate the presence of at least one. "Multiple" or "several" means two or more, unless otherwise specifically defined. The numbers in the drawings in this specification merely distinguish between functional components or modules and do not indicate the logical relationships between them. Words such as "include" or "comprising" mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, but do not exclude other elements or objects. Unless otherwise expressly specified and limited, mechanical terms such as "installation" and "setting" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; "connection" or "connected" and similar words are not limited to physical or mechanical connections, but can be an electrical connection or a communication connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0057] Hereinafter, various embodiments according to the present application will be described in detail with reference to the accompanying drawings. It should be noted that in the accompanying drawings, the same reference numerals are given to components having substantially the same or similar structures and functions, and repeated descriptions thereof will be omitted.
[0058] To address the problem of using a circuit to wake up a microcontroller unit using a tailgate wake-up signal or a power-on wake-up signal, this application provides the following technical solutions:
[0059] In some embodiments, a wake-up circuit, such as Figure 1 As shown, it includes: a first wake-up module 100 and a second wake-up module 200.
[0060] The first wake-up module 100 has a first signal input port 101 and a first signal output port 102; the second wake-up module 200 has a second signal input port 201 and a second signal output port 202; the first signal output port 102 is electrically connected to the second signal output port 202, and the tap at the connection between the first signal output port 102 and the second signal output port 202 serves as a wake-up detection port 901.
[0061] Among them, the first wake-up module 100 is configured to receive a tailgate wake-up signal based on the first signal input port 101, and the wake-up detection port outputs a controller wake-up signal. The second wake-up module 200 is configured to receive a power-on wake-up signal based on the second signal input port 201, and the wake-up detection port outputs a controller wake-up signal.
[0062] The tailgate wake-up signal is a wake-up signal issued by triggering the tailgate button according to a preset rule. When the tailgate triggering rule is met, the tailgate wake-up signal takes effect. In the embodiment of the present application, the tailgate wake-up signal is active at a low level.
[0063] The jump start wake-up signal is a wake-up signal sent during the jump start operation of the vehicle. In the embodiment of the present application, the jump start wake-up signal is valid at a high level.
[0064] When either the tailgate wake-up signal or the jumper wake-up signal is triggered, a controller wake-up signal is generated at the wake-up detection port 901. In this embodiment of the present application, the controller wake-up signal is high and is used to wake up the vehicle's microcontroller unit (MCU). By stimulating the tailgate wake-up signal or the jumper wake-up signal, a wake-up signal for waking up the MCU is generated in the wake-up circuit, thereby waking up the MCU.
[0065] like Figure 2 As shown, the first wake-up module 100 includes: a first transistor T1, a first diode D1, a first resistor R1, a second resistor R2 and a third resistor R3;
[0066] The first transistor T1 has: a first transistor first electrode T 11 , the second electrode T of the first transistor 12 , the third electrode T of the first transistor 13 ;
[0067] The first transistor first electrode T 11 The anode of the first diode D1 is electrically connected to the cathode of the first diode D1 as the first signal input port 101. The first resistor R1 is connected in parallel to the first electrode of the first transistor T 11 and the third electrode T of the first transistor 13 Between the first transistor and the third electrode T 13Connect to power supply V DD , the second electrode of the first transistor T 12 The second resistor R2 is connected in series and then grounded. The second electrode T 12 It is also electrically connected to one end of the third resistor R3 , and the other end of the third resistor R3 serves as the first signal output port 102 .
[0068] The tailgate wake-up signal is inputted from the first signal input port 101. The tailgate wake-up signal is active at a low level. The first transistor T1 is preferably a PNP transistor. 11 , the second electrode T of the first transistor 12 , the third electrode T of the first transistor 13 The corresponding values are the base, collector and emitter of the PNP transistor. The threshold voltage value of the first transistor T1 is negative. 11 and the third electrode T of the first transistor 13 When the potential difference between the first and second transistors is less than the threshold voltage of the first transistor T1, the first transistor T1 is turned on.
[0069] When the first signal input port 101 receives a low-level tailgate wake-up signal, the first transistor first electrode T 11 The potential of the first transistor T is clamped at the conduction voltage drop of the first diode D1. 11 and the third electrode T of the first transistor 13 The potential difference between the first transistor T1 and the second transistor T2 is less than the threshold voltage of the first transistor T1, and the first transistor T1 is turned on. 12 Output high level. The high level signal is transmitted from the first signal output port 102 to the part outside the first wake-up module 100. On the contrary, when the first signal input terminal 101 receives a high level signal, the first transistor first electrode T 11 and the third electrode T of the first transistor 13 The potential difference between them is greater than the threshold voltage of the first transistor T1, and the first transistor T1 is turned off. The first signal output port 102 transmits a low-level signal to parts other than the first wake-up module 100.
[0070] Power supply V DD The value of can be reasonably set as needed, and it is necessary to ensure that when the first signal input port 101 receives a low-level signal, the first transistor T1 is turned on.
[0071] like Figure 3 As shown, the second wake-up module 200 includes: a second transistor T2, a third transistor T3, a fourth transistor T4, a fourth resistor R4, a fifth resistor R5, and a sixth resistor R6;
[0072] The second transistor T2 has: a first electrode T 21, the second electrode T of the second transistor 22 , the third electrode of the second transistor T 23 ;
[0073] The third transistor T3 has: a first electrode T 31 , the second electrode T of the third transistor 32 , the third transistor third electrode T 33 ;
[0074] The fourth transistor T4 has: a first electrode T 41 , the second electrode T of the fourth transistor 42 , the third electrode of the fourth transistor T 43 ;
[0075] The third electrode T of the second transistor 23 As the second signal input port 201, the fourth resistor R4 is connected in parallel to the first electrode T of the second transistor. 21 and the third electrode T of the second transistor 23 Between the second transistor second electrode T 22 is electrically connected to one end of the fifth resistor R5, the other end of the fifth resistor R5 serves as the second signal output port 202, and the first electrode of the second transistor T 21 and the second electrode T of the third transistor 32 Electrically connected, the third transistor third electrode T 33 Grounded, the first electrode of the third transistor T 31 Connect the sixth resistor R6 in series and then connect it to the power supply V DD , the first electrode of the third transistor T 31 Also connected to the second electrode T of the fourth transistor 42 Electrically connected, the third electrode of the fourth transistor T 43 grounding;
[0076] The second wake-up module 200 further has a control signal input port 203, a first electrode of the fourth transistor T 41 As a control signal input port 203.
[0077] The power-on wake-up signal is inputted from the second signal input port 201. The power-on wake-up signal is active high. The second transistor T2, the third transistor T3 and the fourth transistor T4 are P-channel enhancement MOSFET, N-channel enhancement MOSFET and N-channel enhancement MOSFET respectively.
[0078] The first electrode T of the second transistor 21 , the second electrode T of the second transistor 22 and the third electrode T of the second transistor 23 These correspond to the gate, drain, and source of the P-channel enhancement MOSFET.
[0079] The first electrode T of the third transistor 31 , the second electrode T of the third transistor 32 and the third transistor third electrode T 33 These correspond to the gate, drain, and source of the N-channel enhancement MOSFET.
[0080] The first electrode T of the fourth transistor 41 , the second electrode T of the fourth transistor 42 and the third electrode T of the fourth transistor 43 These correspond to the gate, drain, and source of the N-channel enhancement MOSFET.
[0081] The principle of using the second transistor T2 , the third transistor T3 and the fourth transistor T4 as switch transistors will not be described in detail here.
[0082] Optionally, the first electrode of the fourth transistor is grounded.
[0083] When the second signal input port 201 receives a high-level wake-up signal, the second transistor T2 is turned on, and the second signal output port 202 transmits the high-level signal to the portion outside the second wake-up module 200. Conversely, when the second signal input port 201 receives a low-level signal, the second transistor T2 is turned off, and the second signal output port 202 transmits the low-level signal to the portion outside the second wake-up module 200.
[0084] In some preferred embodiments, Figure 4 As shown, the preferred second awakening module 200a further includes: a second diode D2, an eleventh resistor R 11 , the twelfth resistor R 12 , capacitor C;
[0085] The cathode of the second diode D2 is connected to the third electrode T 23 The anode of the second diode D2 is electrically connected to the first electrode of the second transistor T 21 Electrically connected, the first electrode of the second transistor T 21 Connect the eleventh resistor R in series 11 Then the second electrode of the third transistor T 32 Electrically connected, the first electrode of the third transistor T 31 Connect the twelfth resistor R in series 12 Then the fourth transistor second electrode T 42 One end of the capacitor C is electrically connected to the third electrode of the second transistor T 23 , the other end of capacitor C is grounded.
[0086] The second diode D2 is a voltage regulator tube, which is used to stabilize the first electrode T of the second transistor. 21 and the third electrode T of the second transistor23 The voltage between 1 and 2 is used to protect the second transistor T2. The fourth resistor R4 is a discharge circuit of the second transistor. The capacitor C is used to absorb static electricity and protect the electronic components in the second wake-up module 200. 11 , the twelfth resistor R 12 are current-limiting resistors, which respectively limit the current flowing through the third transistor T3 and the fourth transistor T4 to be within the safe operating area of the corresponding transistor.
[0087] like Figure 5 As shown, the wake-up circuit further includes a control signal module 300;
[0088] The control signal module 300 has: a first control input port 301 , a second control input port 302 , a first control output port 303 , and a second control output port 304 ;
[0089] The first control output port 303 is electrically connected to the first signal output port 102 .
[0090] Preferably, when the wake-up circuit includes a control signal module, the first electrode of the fourth transistor T 41 Serving as the control signal input port 203 and the second control output port 304 .
[0091] The control signal module 300 is configured to lock the wake-up signal transmission function of the wake-up circuit when the first control input port 301 or the second control input port 302 receives a high level.
[0092] like Figure 6 As shown, the control signal module 300 includes: a fifth transistor T5, a seventh resistor R7, an eighth resistor R8, and a ninth resistor R9;
[0093] The fifth transistor T5 has a first electrode T 51 , the second electrode T of the fifth transistor 52 , the third electrode T of the fifth transistor 53 , the second electrode of the fifth transistor T 52 As the first control output port 303, the third electrode T of the fifth transistor 53 The seventh resistor R7 is connected in parallel to the first electrode T of the fifth transistor. 51 and the third electrode T of the fifth transistor 53 Between the first electrode T of the fifth transistor 51 It is also electrically connected to one end of the eighth resistor R8, and the other end of the eighth resistor R8 serves as the first control input port 301. The first electrode T 51 It is also electrically connected to one end of a ninth resistor R9 , and the other end of the ninth resistor R9 serves as a second control input port 302 .
[0094] The fifth transistor T5 is an N-channel enhancement type MOSFET. 51 , the second electrode T of the fifth transistor 52 and the third electrode T of the fifth transistor 53 The corresponding gate, drain and source of the fifth transistor are respectively. When the micro control unit is working normally, the micro control unit will transmit a high level signal to the first control input port 301 or the second control input port 302. The high level signal is transmitted to the first electrode T of the fifth transistor. 51 , the fifth transistor T5 is turned on, pulling down Figure 5 The potential of the wake-up detection port 901 is set; and the second control output port 304 transmits a high level to the part outside the control signal module 300, and the control signal input port 203 receives the high level transmitted by the second control output port 304, so that the fourth transistor T4 is turned on and the third transistor T3 is turned off, resulting in the first electrode of the second transistor T 21 , the third electrode of the second transistor T 23 The potential difference between the two terminals cannot turn on the second transistor T2. Therefore, the wake-up detection port 901 maintains a low potential output, which prevents the wake-up circuit from outputting a valid high-level wake-up signal, thereby locking the wake-up function of the wake-up circuit and preventing the wrong transmission of the wake-up signal.
[0095] The existence of the eighth resistor R8 and the ninth resistor R9 ensures that the fifth transistor T5 operates within the safe operating area.
[0096] In some preferred embodiments, Figure 7 As shown, the preferred control signal module 300a further includes: a third diode D3 and a fourth diode D4 on the basis of the control signal module 300;
[0097] The third diode D3 is connected in series to the first electrode T of the fifth transistor 51 and the eighth resistor R8, wherein the cathode of the third diode D3 is connected to the first electrode T of the fifth transistor 51 The anode of the third diode D3 is electrically connected to one end of the eighth resistor R8.
[0098] The fourth diode D4 is connected in series to the first electrode T of the fifth transistor 51 and the ninth resistor R9, wherein the cathode of the fourth diode D4 is connected to the first electrode T of the fifth transistor 51 The anode of the fourth diode D4 is electrically connected to one end of the ninth resistor R9.
[0099] The third diode D3 can effectively isolate the transmission of high-level signals from the second control input port 302 to the first control input port 301. The fourth diode D4 can effectively isolate the transmission of high-level signals from the first control input port 301 to the second control input port 302, thereby avoiding signal crosstalk.
[0100] In some preferred embodiments, Figure 8 As shown, the preferred wake-up circuit further includes a fifth diode D5, a sixth diode D6, a thirteenth resistor R 13 ;
[0101] The first signal output port 102 is electrically connected to the second signal output port 202 after being connected in series with a fifth diode D5 and a sixth diode D6. The anode of the fifth diode D5 is electrically connected to the first signal output port 102, the cathode of the fifth diode D5 is electrically connected to the cathode of the sixth diode D6, and the anode of the sixth diode D6 is electrically connected to the second signal output port 202. The connection point between the fifth diode D5 and the sixth diode D6 is tapped as a wake-up detection port. The thirteenth resistor R 13 The first signal output port 102 is connected in series with the first control output port 303 .
[0102] The fifth diode D5 can effectively isolate the high-level signal from being transmitted from the second signal output port 202 to the first signal output port 102. The sixth diode D6 can effectively isolate the high-level signal from being transmitted from the first signal output port 102 to the second signal output port 202, thereby avoiding signal crosstalk.
[0103] The thirteenth resistor R 13 The current flowing into the fifth transistor T5 is limited to be within the safe operating area of the fifth transistor T5.
[0104] In some preferred embodiments, Figure 8 Based on the wake-up circuit shown in FIG. 4 , the wake-up circuit further includes a wake-up source detection module 400, such as Figure 9 As shown;
[0105] The wakeup source detection module 400 has a wakeup source input port 401 and a wakeup source output port 402;
[0106] The wake-up source input port 401 is electrically connected to the first signal output port 102;
[0107] The wake-up source detection module 400 includes a tenth resistor R 10 ;
[0108] The tenth resistor R 10 One end of the resistor R 10The other end serves as the wake-up source output port 402 .
[0109] The wake-up source detection module 400 is configured to indicate to the parts outside the wake-up circuit whether the wake-up signal is triggered by the tailgate wake-up signal or the jump wake-up signal when the wake-up circuit transmits a wake-up signal through the wake-up detection port 901. Specifically, when the wake-up detection port transmits a high-level signal, it indicates that there is a wake-up source. Due to the presence of the fifth diode D5 and the sixth diode D6, the high-level signal emitted by the second signal output port 202 is isolated by the fifth diode D5, and the high-level signal emitted by the first signal output port 102 is isolated by the sixth diode D6. Usually, one of the wake-up sources is selected. At this time, if the wake-up source output terminal transmits a high level, it means that the wake-up source comes from the tailgate wake-up signal; if the wake-up source output terminal transmits a low level, it means that the wake-up source comes from the jump wake-up signal.
[0110] This application does not limit the above components, including: the specific models and values of each transistor, each resistor, each diode, and capacitor; the power supply V DD This is because the wake-up signal values for different models of microcontrollers vary. It should be emphasized that under the definition of the wake-up circuit in this application, those skilled in the art can set the above corresponding values and models according to the circuit function and the specific model of the microcontroller to achieve the circuit function.
[0111] In other embodiments, a vehicle-mounted wake-up device includes the wake-up circuit 1 described in the first aspect.
[0112] like Figure 10 As shown, the vehicle-mounted wake-up device further includes: a micro control unit 2, a battery 3, a micro control unit power supply module 4, a low-power power supply module 5, and a high-power power supply module 6;
[0113] The wake-up circuit 1 is electrically connected to the microcontroller unit 2, the low-power power supply module 5, and the high-power power supply module 6 respectively. The microcontroller unit 2 is also electrically connected to the low-power power supply module 5 and the high-power power supply module 6 respectively. The battery 3 is electrically connected to the microcontroller unit power supply module 4, the low-power power supply module 5, and the high-power power supply module 6 respectively. The microcontroller unit power supply module 4 is electrically connected to the microcontroller unit 2.
[0114] The low-power power supply module is used to supply power to part of the vehicle load; the high-power power supply module is used to supply power to the entire vehicle load.
[0115] When the microcontroller unit 2 is operating normally, the microcontroller unit 2 transmits a high-level signal to the low-power power supply module 5 or the high-power power supply module 6. Usually, when the vehicle is in low-power mode, the microcontroller unit 2 transmits a high-level signal to the low-power power supply module 5 to supply power to part of the vehicle body load. At the same time, the high-level signal is transmitted to the wake-up circuit 1 through the first control input port 301 to lock the wake-up circuit 1. In the vehicle start-up mode, the microcontroller unit 2 transmits a high-level signal to the high-power power supply module 6 to supply power to the entire vehicle load. At the same time, the high-level signal is transmitted to the wake-up circuit 1 through 302 to lock the wake-up circuit. The principle of the wake-up circuit locking has been explained in detail above and will not be repeated here.
[0116] If the remaining battery charge drops below a preset value, the battery is severely damaged, or the battery is undergoing maintenance, the MCU 2 enters a dormant state and transmits a low-level signal to both the low-power supply module 5 and the high-power supply module 6. At this point, the wake-up circuit 1 is not locked and can receive a corresponding tailgate wake-up signal or a power-on wake-up signal via the first signal input port 101 or the second signal input port 201, thereby waking up the MCU 2.
[0117] After the micro control unit 2 enters sleep mode, it transmits a low-level signal to the low-power power supply module 5 and the high-power power supply module 6 at the same time.
[0118] In addition, the battery 3 continuously supplies power to the MCU power supply module 4 , and the MCU power supply module 4 continuously supplies power to the MCU 2 , thereby maintaining the function of the MCU 2 being able to be awakened.
[0119] In other embodiments, a vehicle includes the wake-up circuit or vehicle-mounted wake-up device described above.
[0120] By implementing a wake-up circuit, a vehicle-mounted wake-up device, and a vehicle disclosed in the embodiments of the present application, it is possible to integrate a tailgate wake-up signal and a jump power wake-up signal in one circuit. After the entire vehicle load enters a sleep state, the wake-up signal is transmitted to parts outside the wake-up circuit, streamlining the circuit structure and saving the space in the vehicle occupied by the circuit. When the microcontroller unit is operating normally, the tailgate wake-up or jump power wake-up function of the wake-up circuit is locked to avoid erroneous transmission of the wake-up signal. It is possible to identify whether the wake-up source comes from a tailgate wake-up or a jump power wake-up. The wake-up circuit itself has low power consumption. The components in the wake-up circuit are conventional discrete components, and component procurement is flexible, making cost control easy.
[0121] All of the above optional technical solutions can be combined in any way to form optional embodiments of the present application, and will not be described in detail here.
[0122] Example 1
[0123] A wake-up circuit, such as Figure 1As shown, it includes: a first wake-up module 100, a second wake-up module 200;
[0124] The first wake-up module 100 has a first signal input port 101 and a first signal output port 102;
[0125] The second wake-up module 200 has a second signal input port 201 and a second signal output port 202;
[0126] The first signal output port 102 is electrically connected to the second signal output port 202 , and a tap at the connection between the first signal output port 102 and the second signal output port 202 serves as a wake-up detection port 901 ;
[0127] Among them, the first wake-up module 100 is configured to receive a tailgate wake-up signal based on the first signal input port 101, and the wake-up detection port outputs a controller wake-up signal. The second wake-up module 200 is configured to receive a power-on wake-up signal based on the second signal input port 201, and the wake-up detection port outputs a controller wake-up signal.
[0128] Example 2
[0129] Based on the first embodiment, a wake-up circuit, such as Figure 11 As shown, the first wake-up module 100 includes: a first transistor T1, a first diode D1, a first resistor R1, a second resistor R2 and a third resistor R3;
[0130] The first transistor T1 has: a first transistor first electrode T 11 , the second electrode T of the first transistor 12 , the third electrode T of the first transistor 13 ;
[0131] The first transistor first electrode T 11 The anode of the first diode D1 is electrically connected to the cathode of the first diode D1 as the first signal input port 101. The first resistor R1 is connected in parallel to the first electrode of the first transistor T 11 and the third electrode T of the first transistor 13 Between the first transistor and the third electrode T 13 Connect to power supply V DD , the second electrode of the first transistor T 12 The second resistor R2 is connected in series and then grounded. The second electrode T 12 It is also electrically connected to one end of the third resistor R3 , and the other end of the third resistor R3 serves as the first signal output port 102 .
[0132] The second wake-up module 200 includes: a second transistor T2, a third transistor T3, a fourth transistor T4, a fourth resistor R4, a fifth resistor R5, and a sixth resistor R6;
[0133] The second transistor T2 has: a first electrode T 21 , the second electrode T of the second transistor 22 , the third electrode of the second transistor T 23 ;
[0134] The third transistor T3 has: a first electrode T 31 , the second electrode T of the third transistor 32 , the third transistor third electrode T 33 ;
[0135] The fourth transistor T4 has: a first electrode T 41 , the second electrode T of the fourth transistor 42 , the third electrode of the fourth transistor T 43 ;
[0136] The third electrode T of the second transistor 23 As the second signal input port 201, the fourth resistor R4 is connected in parallel to the first electrode T of the second transistor. 21 and the third electrode T of the second transistor 23 Between the second transistor second electrode T 22 is electrically connected to one end of the fifth resistor R5, the other end of the fifth resistor R5 serves as the second signal output port 202, and the first electrode of the second transistor T 21 and the second electrode T of the third transistor 32 Electrically connected, the third transistor third electrode T 33 Grounded, the first electrode of the third transistor T 31 Connect the sixth resistor R6 in series and then connect it to the power supply V DD , the first electrode of the third transistor T 31 Also connected to the second electrode T of the fourth transistor 42 Electrically connected, the third electrode of the fourth transistor T 43 grounding;
[0137] The second wake-up module 200 further has a control signal input port 203, a first electrode of the fourth transistor T 41 As a control signal input port 203.
[0138] The wake-up circuit further includes a control signal module 300;
[0139] The control signal module 300 has: a first control input port 301 , a second control input port 302 , a first control output port 303 , and a second control output port 304 ;
[0140] The first control output port 303 is electrically connected to the first signal output port 102 , and the second control output port 304 is electrically connected to the control signal input port 203 ;
[0141] The control signal module 300 includes: a fifth transistor T5, a seventh resistor R7, an eighth resistor R8, and a ninth resistor R9;
[0142] The fifth transistor T5 has a first electrode T 51 , the second electrode T of the fifth transistor 52 , the third electrode T of the fifth transistor 53 , the second electrode of the fifth transistor T 52 As the first control output port 303, the third electrode T of the fifth transistor 53 The seventh resistor R7 is connected in parallel to the first electrode T of the fifth transistor. 51 and the third electrode T of the fifth transistor 53 Between the first electrode T of the fifth transistor 51 It is also electrically connected to one end of the eighth resistor R8, and the other end of the eighth resistor R8 serves as the first control input port 301. The first electrode T 51 It is also electrically connected to one end of a ninth resistor R9 , and the other end of the ninth resistor R9 serves as a second control input port 302 .
[0143] The contents described in Example 1 will not be repeated here.
[0144] Example 3
[0145] On the basis of the second embodiment, a better wake-up circuit, such as Figure 12 The second wake-up module 200 further includes: a second diode D2, an eleventh resistor R 11 , the twelfth resistor R 12 , capacitor C;
[0146] The cathode of the second diode D2 is connected to the third electrode T 23 The anode of the second diode D2 is electrically connected to the first electrode of the second transistor T 21 Electrically connected, the first electrode of the second transistor T 21 Connect the eleventh resistor R in series 11 Then the second electrode of the third transistor T 32 Electrically connected, the first electrode of the third transistor T 31 Connect the twelfth resistor R in series 12 Then the fourth transistor second electrode T 42 One end of the capacitor C is electrically connected to the third electrode of the second transistor T 23 , the other end of capacitor C is grounded.
[0147] The control signal module 300 further includes: a third diode D3 and a fourth diode D4;
[0148] The third diode D3 is connected in series to the first electrode T of the fifth transistor 51and the eighth resistor R8, wherein the cathode of the third diode D3 is connected to the first electrode T of the fifth transistor 51 The anode of the third diode D3 is electrically connected to one end of the eighth resistor R8.
[0149] The fourth diode D4 is connected in series to the first electrode T of the fifth transistor 51 and the ninth resistor R9, wherein the cathode of the fourth diode D4 is connected to the first electrode T of the fifth transistor 51 The anode of the fourth diode D4 is electrically connected to one end of the ninth resistor R9.
[0150] The wake-up circuit further includes a fifth diode D5, a sixth diode D6, a thirteenth resistor R 13 ;
[0151] The first signal output port 102 is electrically connected to the second signal output port 202 after being connected in series with a fifth diode D5 and a sixth diode D6. The anode of the fifth diode D5 is electrically connected to the first signal output port 102, the cathode of the fifth diode D5 is electrically connected to the cathode of the sixth diode D6, and the anode of the sixth diode D6 is electrically connected to the second signal output port 202. The connection point of the fifth diode D5 and the sixth diode D6 is tapped as the wake-up detection port 901. The thirteenth resistor R 13 The first signal output port 102 is connected in series with the first control output port 303 .
[0152] The wake-up circuit further includes a wake-up source detection module 400;
[0153] The wakeup source detection module 400 has a wakeup source input port 401 and a wakeup source output port 402;
[0154] The wake-up source input port 401 is electrically connected to the first signal output port 102;
[0155] The wake-up source detection module 400 includes a tenth resistor R 10 ;
[0156] The tenth resistor R 10 One end of the resistor R 10 The other end serves as the wake-up source output port 402 .
[0157] The contents described in Example 2 are not repeated here.
[0158] Example 4
[0159] A vehicle-mounted wake-up device includes the wake-up circuit described in the second or third embodiment.
[0160] The contents described in Example 2 and Example 3 are not repeated here.
[0161] Example 5
[0162] Based on the fourth embodiment, Figure 10 As shown, a vehicle-mounted wake-up device further includes: a micro control unit 2, a battery 3, a micro control unit power supply module 4, a low-power power supply module 5, and a high-power power supply module 6;
[0163] The wake-up circuit 1 is electrically connected to the microcontroller unit 2, the low-power power supply module 5, and the high-power power supply module 6 respectively. The microcontroller unit 2 is also electrically connected to the low-power power supply module 5 and the high-power power supply module 6 respectively. The battery 3 is electrically connected to the microcontroller unit power supply module 4, the low-power power supply module 5, and the high-power power supply module 6 respectively. The microcontroller unit power supply module 4 is electrically connected to the microcontroller unit 2.
[0164] The contents described in Example 4 are not repeated here.
[0165] Example 6
[0166] A vehicle, comprising the wake-up circuit described in the first, second, or third embodiment;
[0167] Or the vehicle-mounted wake-up device described in Example 4 or Example 5.
[0168] The contents described in Examples 1 to 5 are not repeated here.
[0169] Note that the above are only preferred embodiments of the present application and the technical principles used. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions can be made by those skilled in the art without departing from the scope of protection of the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.
Claims
1. A wake-up circuit, characterized in that: include: A first wake-up module and a second wake-up module; The first wake-up module has a first signal input port and a first signal output port; The second wake-up module has a second signal input port and a second signal output port; The first signal output port is electrically connected to the second signal output port, and a tap at the connection between the first signal output port and the second signal output port serves as a wake-up detection port; Among them, the first wake-up module is configured to receive a tailgate wake-up signal based on the first signal input port, and the wake-up detection port outputs a controller wake-up signal; the second wake-up module is configured to receive a power-on wake-up signal based on the second signal input port, and the wake-up detection port outputs a controller wake-up signal.
2. The wake-up circuit according to claim 1, wherein: The wake-up circuit further includes a control signal module; The control signal module has: a first control input port, a second control input port, a first control output port, and a second control output port, and the second wake-up module also has a control signal input port; The first control output port is electrically connected to the first signal output port, and the second control output port is electrically connected to the control signal input port.
3. The wake-up circuit according to claim 1 or 2, characterized in that: The first wake-up module includes: a first transistor, a first diode, a first resistor, a second resistor and a third resistor; The first transistor comprises: a first transistor first electrode, a first transistor second electrode, and a first transistor third electrode; The first electrode of the first transistor is electrically connected to the anode of the first diode, the cathode of the first diode serves as the first signal input port, the first resistor is connected in parallel between the first electrode of the first transistor and the third electrode of the first transistor, the third electrode of the first transistor is connected to a power supply, the second electrode of the first transistor is connected in series with the second resistor and then to ground, the second electrode of the first transistor is also electrically connected to one end of the third resistor, and the other end of the third resistor serves as the first signal output port.
4. The wake-up circuit according to claim 1 or 2, characterized in that: The second wake-up module includes: a second transistor, a third transistor, a fourth transistor, a fourth resistor, a fifth resistor, and a sixth resistor; The second transistor comprises: a second transistor first electrode, a second transistor second electrode, and a second transistor third electrode; The third transistor comprises: a third transistor first electrode, a third transistor second electrode, and a third transistor third electrode; The fourth transistor comprises: a fourth transistor second electrode and a fourth transistor third electrode; The third electrode of the second transistor serves as the second signal input port, the fourth resistor is connected in parallel between the first electrode of the second transistor and the third electrode of the second transistor, the second electrode of the second transistor is electrically connected to one end of the fifth resistor, and the other end of the fifth resistor serves as the second signal output port, the first electrode of the second transistor is electrically connected to the second electrode of the third transistor, the third electrode of the third transistor is grounded, the first electrode of the third transistor is connected in series with the sixth resistor and then to a power supply, the first electrode of the third transistor is also electrically connected to the second electrode of the fourth transistor, and the third electrode of the fourth transistor is grounded.
5. The wake-up circuit according to claim 4, characterized in that: The second wake-up module further includes: a second diode, an eleventh resistor, a twelfth resistor, and a capacitor; The cathode of the second diode is electrically connected to the third pole of the second transistor, the anode of the second diode is electrically connected to the first pole of the second transistor, the first pole of the second transistor is electrically connected to the second pole of the third transistor after being connected in series with the eleventh resistor, the first pole of the third transistor is electrically connected to the second pole of the fourth transistor after being connected in series with the twelfth resistor, one end of the capacitor is electrically connected to the third pole of the second transistor, and the other end of the capacitor is grounded.
6. The wake-up circuit according to claim 2, wherein: The control signal module includes: a fifth transistor, a seventh resistor, an eighth resistor, and a ninth resistor; The fifth transistor has a first electrode, a second electrode, and a third electrode. The second electrode of the fifth transistor serves as the first control output port, and the third electrode of the fifth transistor is grounded. The seventh resistor is connected in parallel between the first electrode of the fifth transistor and the third electrode of the fifth transistor. The first electrode of the fifth transistor is also electrically connected to one end of the eighth resistor, and the other end of the eighth resistor serves as the first control input port. The first electrode of the fifth transistor is also electrically connected to one end of the ninth resistor, and the other end of the ninth resistor serves as the second control input port.
7. The wake-up circuit according to claim 6, characterized in that: The control signal module further includes: a third diode and a fourth diode; The third diode is connected in series between the first electrode of the fifth transistor and the eighth resistor, wherein the cathode of the third diode is electrically connected to the first electrode of the fifth transistor, and the anode of the third diode is electrically connected to one end of the eighth resistor. The fourth diode is connected in series between the first electrode of the fifth transistor and the ninth resistor, wherein the cathode of the fourth diode is electrically connected to the first electrode of the fifth transistor, and the anode of the fourth diode is electrically connected to one end of the ninth resistor.
8. The wake-up circuit according to claim 2, wherein: The wake-up circuit further includes a fifth diode, a sixth diode, and a thirteenth resistor; The first signal output port is electrically connected to the second signal output port after the fifth diode and the sixth diode are connected in series in sequence, wherein the anode of the fifth diode is electrically connected to the first signal output port, the cathode of the fifth diode is electrically connected to the cathode of the sixth diode, the anode of the sixth diode is electrically connected to the second signal output port, and the connection point between the fifth diode and the sixth diode is tapped as the wake-up detection port, and the thirteenth resistor is connected in series between the first signal output port and the first control output port.
9. The wake-up circuit according to claim 8, characterized in that: The wake-up circuit further includes a wake-up source detection module; The wake-up source detection module has a wake-up source input port and a wake-up source output port; The wake-up source input port is electrically connected to the first signal output port.
10. The wake-up circuit according to claim 9, characterized in that: The wake-up source detection module includes a tenth resistor; One end of the tenth resistor serves as the wake-up source input port, and the other end of the tenth resistor serves as the wake-up source output port.
11. A vehicle-mounted wake-up device, characterized in that: The wake-up circuit comprises the wake-up circuit according to any one of claims 1 to 10.
12. The vehicle-mounted wake-up device according to claim 11, characterized in that: The vehicle-mounted wake-up device further includes: a micro control unit, a battery, a micro control unit power supply module, a low-power power supply module, and a high-power power supply module; The wake-up circuit is electrically connected to the microcontroller unit, the low-power power supply module, and the high-power power supply module respectively. The microcontroller unit is also electrically connected to the low-power power supply module and the high-power power supply module respectively. The battery is electrically connected to the microcontroller unit power supply module, the low-power power supply module, and the high-power power supply module respectively. The microcontroller unit power supply module is electrically connected to the microcontroller unit.
13. A vehicle, characterized in that: The vehicle-mounted wake-up device comprises the wake-up circuit according to any one of claims 1 to 10, or the vehicle-mounted wake-up device according to claim 11 or 12.