Wake-up circuit, wake-up method, inverter, electric drive assembly and vehicle
By connecting the wake-up detection module to the high-voltage circuit of the power battery and using the signal transmission module and the electronic control wake-up module to transmit the wake-up voltage signal, the problem of missing or poor contact of the KL15 wake-up line is solved, and efficient wake-up of electronic control components and cost savings are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANGHAI LIXIANG AUTOMOBILE CO LTD
- Filing Date
- 2024-11-19
- Publication Date
- 2026-05-19
AI Technical Summary
In vehicles, the lack of a KL15 wake-up line or poor contact of the KL15 wake-up line affects the efficiency of waking up electronic control components.
By connecting the wake-up detection module to the high-voltage circuit of the vehicle's power battery, and using the signal transmission module and the electronic control wake-up module, a wake-up voltage signal is transmitted to wake up the electronic control components, avoiding the need for an additional high-voltage isolation power supply and saving costs.
It effectively wakes up electronic control components, improves wake-up efficiency, saves costs, and does not rely on the KL15 wake-up line.
Smart Images
Figure CN122058795A_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of vehicle control, specifically relating to a wake-up circuit, a wake-up method, an inverter, an electric drive assembly, and a vehicle. Background Technology
[0002] With the development of technology, vehicles have become an indispensable means of transportation in people's daily lives. Furthermore, the application of new energy vehicles is becoming increasingly widespread. Typically, new energy vehicles are equipped with electronic control components that perform energy conversion, specifically converting direct current (DC) to alternating current (AC). These electronic control components are usually connected to a wake-up circuit. When the electronic control component is not in operation, it enters a sleep state. Before it starts working, the wake-up circuit sends a wake-up command to the component, waking it up. In related technologies, the KL15 wake-up cable is commonly used as the wake-up source for the electronic control component. However, some vehicles lack a KL15 wake-up cable, or the KL15 wake-up cable in the vehicle may have poor contact, affecting the wake-up efficiency of the electronic control component. Summary of the Invention
[0003] The purpose of this application is to provide a wake-up circuit, a wake-up method, an inverter, an electric drive assembly, and a vehicle, at least to solve the problem that the wake-up efficiency of the electronic control components is affected.
[0004] In a first aspect, embodiments of this application provide a wake-up circuit, which includes: an electronically controlled wake-up module, a signal transmission module, and a wake-up detection module;
[0005] The wake-up detection module is used to connect to the high-voltage circuit of the power battery in the vehicle. The signal transmission module is connected to the wake-up detection module and the signal transmission module is connected to the electronic control wake-up module. The electronic control wake-up module is used to connect to the electronic control components in the vehicle to provide a wake-up voltage signal to the electronic control components.
[0006] Optionally, the signal transmission module includes a first signal isolator;
[0007] The first signal isolator includes a first signal input terminal and a first signal output terminal;
[0008] The first signal input terminal is connected to the first position of the wake-up detection module, and the first signal output terminal is connected to the electronically controlled wake-up module;
[0009] Wherein, the voltage at the first input terminal is greater than the voltage at the first signal output terminal.
[0010] Optionally, the signal transmission module further includes a first isolation power supply;
[0011] The first isolation power supply includes a first voltage input terminal and a first voltage output terminal, and the first signal isolator also includes a first isolation voltage input terminal and a second isolation voltage input terminal;
[0012] Both the first voltage input terminal and the first isolation voltage input terminal are connected to the second position of the wake-up detection module. The voltage at the second position is higher than the voltage at the first position. The first voltage output terminal is connected to the second isolation voltage input terminal.
[0013] Optionally, the signal transmission module is a signal transmission chip, which includes a first chip voltage input terminal, a first chip signal input terminal, and a first chip signal output terminal.
[0014] The voltage input terminal of the first chip is connected to the first position of the wake-up detection module, the signal input terminal of the first chip is connected to the second position of the wake-up detection module, the voltage at the first position is higher than the voltage at the second position, and the signal output terminal of the first chip is connected to the electronically controlled wake-up module.
[0015] Wherein, the voltage at the voltage input terminal of the first chip is greater than the voltage at the signal output terminal of the first chip.
[0016] Optionally, the wake-up circuit further includes a first conversion module, and the signal transmission module includes a second isolated power supply;
[0017] The second isolation power supply includes a second voltage input terminal and a second voltage output terminal, and the second signal isolator includes a third isolation voltage input terminal and a fourth isolation voltage input terminal;
[0018] The first end of the first conversion module is connected to the second position of the wake-up detection module, the second voltage input terminal and the third isolation voltage input terminal are both connected to the second end of the first conversion module, the second voltage output terminal is connected to the fourth isolation voltage input terminal, and the second signal output terminal is connected to the electronically controlled wake-up module;
[0019] Wherein, the voltage at the first terminal of the first conversion module is greater than the voltage at the second terminal of the first conversion module.
[0020] Optionally, the wake-up circuit further includes a second conversion module, and the signal transmission module includes a second signal isolator;
[0021] The second signal isolator includes a second signal input terminal and a second signal output terminal. The second conversion module includes an input terminal and an output terminal. The input terminal is connected to the second position, and the output terminal is connected to the wake-up detection module. The voltage of the output terminal is greater than the voltage of the output terminal.
[0022] Wherein, the voltage at the second signal input terminal is greater than the voltage at the second signal output terminal.
[0023] Optionally, the voltage range of the output terminal is 0-16V.
[0024] Optionally, the wake-up circuit further includes a third conversion module, and the signal transmission module includes a third signal isolator;
[0025] The third signal isolator includes a fifth isolation voltage input terminal, a sixth isolation voltage input terminal, a third signal input terminal, and a third signal output terminal;
[0026] The fifth isolation voltage input terminal is connected to the first position of the wake-up detection module, the third signal input terminal is connected to the second position of the wake-up detection module, the voltage at the first position is higher than the voltage at the second position, the third signal output terminal is connected to the electronically controlled wake-up module, the first terminal of the third conversion module is connected to the sixth isolation voltage input terminal, the second terminal of the third conversion module is used to connect to the output circuit of the low-voltage battery in the vehicle, the voltage at the first terminal of the third conversion module is greater than the voltage at the second terminal of the third conversion module, or the voltage at the first terminal of the third conversion module is less than the voltage at the second terminal of the third conversion module;
[0027] The voltage at the fifth isolation voltage input terminal is greater than the voltage at the sixth isolation voltage input terminal.
[0028] Optionally, the signal transmission module includes a third isolated power supply;
[0029] The third isolation power supply includes a third voltage input terminal and a signal transmission terminal. The third voltage input terminal is electrically connected to the first position of the wake-up detection module, and the signal transmission terminal is electrically connected to the electronically controlled wake-up module.
[0030] The voltage at the third voltage input terminal is greater than the voltage at the signal transmission terminal.
[0031] Optionally, the potential at the first terminal of the wake-up detection module is higher than the potential at the second terminal of the wake-up detection module, and the wake-up detection module includes multiple resistors connected in series;
[0032] Along the direction from the first end to the second end of the wake-up detection module, the potential corresponding to every other resistor decreases sequentially. One of the multiple resistors is electrically connected to the high-voltage circuit of the power battery in the vehicle, and the other resistor is grounded. The signal transmission module is connected to the same potential or different potential locations.
[0033] Optionally, the wake-up detection module includes a first resistor, a second resistor, and a third resistor connected in series.
[0034] The first resistor is electrically connected to the high-voltage circuit of the power battery in the vehicle, and the third resistor is grounded;
[0035] The line between the first resistor and the second resistor, and the line between the second resistor and the third resistor, at least one of the lines is electrically connected to the signal transmission module.
[0036] Optionally, the electronically controlled wake-up module includes a wake-up control circuit, a sleep circuit, a controller, a power control chip, and a low-voltage isolated power supply;
[0037] The wake-up control circuit is connected to the signal transmission module and to the sleep circuit. The sleep circuit is connected to the low-voltage isolated power supply. The wake-up control circuit 11 is also connected to the controller. The controller is connected to the power control chip. The power control chip is connected to the low-voltage isolated power supply. The low-voltage isolated power supply is used to connect to the electronic control components in the vehicle.
[0038] In a second aspect, embodiments of this application provide a wake-up method, which is applied to the wake-up circuit described in any one of the first aspects above. The wake-up circuit includes an electronically controlled wake-up module, which includes a wake-up control circuit, a sleep circuit, a controller, a power control chip, and a low-voltage isolated power supply.
[0039] The wake-up method includes:
[0040] When the wake-up detection module receives a voltage signal from the high-voltage circuit in the vehicle, the wake-up detection module reduces the voltage of the voltage signal and transmits the reduced voltage signal to the signal transmission module, so that the signal transmission module transmits a wake-up voltage signal to the wake-up control circuit. The wake-up control circuit transmits a first signal to the hibernation circuit and a second signal to the controller, so that the hibernation circuit operates and the controller controls the low-voltage isolated power supply to operate, so that the low-voltage isolated power supply provides a wake-up voltage signal to the electronic control component, thereby waking up the electronic control component.
[0041] Thirdly, embodiments of this application provide an inverter, the inverter including a wake-up circuit as described in any one of the first aspects above.
[0042] Fourthly, embodiments of this application provide an electric drive assembly, which includes the inverter described in the third aspect above.
[0043] Fifthly, embodiments of this application provide a vehicle, the vehicle including any of the wake-up circuits described in the first aspect above, or an inverter as described in the third aspect above, or an electric drive assembly as described in the fourth aspect above;
[0044] The wake-up detection module is connected to the high-voltage circuit of the power battery.
[0045] In this embodiment, since the wake-up detection module is used to connect to the high-voltage circuit of the vehicle's power battery, and the signal transmission module is connected to both the wake-up detection module and the electronic control wake-up module, in practical applications, the wake-up detection module can be connected to the high-voltage circuit of the vehicle's power battery. This effectively reuses the high-voltage side of the power battery, allowing the high-voltage side of the power battery to transmit a wake-up voltage signal to the wake-up detection module. The wake-up detection module then transmits the wake-up voltage signal to the signal transmission module, which in turn transmits it to the electronic control wake-up module. The electronic control wake-up module can then wake up the electronic control components in the vehicle. In other words, in this embodiment, after applying the wake-up circuit to the vehicle, by connecting the wake-up detection module to the high-voltage circuit of the vehicle's power battery, even when the KL15 wake-up line is absent or has poor contact, the wake-up circuit provided in this embodiment can still effectively wake up the electronic control components, improving the wake-up efficiency for electronic control components. Attached Figure Description
[0046] Figure 1 This is a schematic diagram of one of the wake-up circuits provided in an embodiment of this application;
[0047] Figure 2 This is a second schematic diagram illustrating a wake-up circuit provided in an embodiment of this application;
[0048] Figure 3 This is a third schematic diagram illustrating a wake-up circuit provided in an embodiment of this application;
[0049] Figure 4 This is a fourth schematic diagram illustrating a wake-up circuit provided in an embodiment of this application;
[0050] Figure 5 This is the fifth schematic diagram illustrating a wake-up circuit provided in an embodiment of this application;
[0051] Figure 6 This is a flowchart illustrating a wake-up method provided in an embodiment of this application.
[0052] Figure label:
[0053] 10: Electronically controlled wake-up module; 11: Wake-up control circuit; 12: Sleep circuit; 13: Controller; 14: Power control chip; 15: Low-voltage isolated power supply; 20: Signal transmission module; 21: First isolated power supply; 22: First signal isolator; 23: Signal transmission chip; 24: Second isolated power supply; 25: Second signal isolator; 26: Third signal isolator; 27: Third isolated power supply; 211: First voltage input terminal; 212: First voltage output terminal; 221: First isolated voltage input terminal; 222: Second isolated voltage input terminal; 223: First signal input terminal; 224: First signal output terminal; 231: First chip voltage input terminal; 232: First chip... 233: First chip signal input terminal; 241: Second voltage input terminal; 242: Second voltage output terminal; 251: Third isolation voltage input terminal; 252: Fourth isolation voltage input terminal; 253: Second signal input terminal; 254: Second signal output terminal; 261: Fifth isolation voltage input terminal; 262: Sixth isolation voltage input terminal; 263: Third signal input terminal; 264: Third signal output terminal; 271: Third voltage input terminal; 272: Signal transmission terminal; 30: Wake-up detection module; 31: First resistor; 32: Second resistor; 33: Third resistor; 40: First conversion module; 50: Second conversion module; 60: Third conversion module. Detailed Implementation
[0054] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.
[0055] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0056] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0057] like Figures 1 to 5 As shown, the wake-up circuit includes: an electronically controlled wake-up module 10, a signal transmission module 20, and a wake-up detection module 30.
[0058] The wake-up detection module 30 is electrically connected to the high-voltage circuit of the vehicle's power battery. The signal transmission module 20 is electrically connected to the wake-up detection module 30 and also to the electronically controlled wake-up module 10. The electronically controlled wake-up module 10 is used to connect and wake up the electronic control components in the vehicle, providing a wake-up voltage signal to these components. Specifically, when the wake-up detection module 30 is electrically connected to the high-voltage circuit, the signal transmission module 20 transmits the wake-up voltage signal from the wake-up detection module 30 to the electronically controlled wake-up module 10, thereby waking up the electronic control components in the vehicle.
[0059] In this embodiment, since the wake-up detection module 30 is electrically connected to the high-voltage circuit of the vehicle's power battery, and the signal transmission module 20 is electrically connected to both the wake-up detection module 30 and the electronically controlled wake-up module 10, in practical applications, the wake-up detection module 30 can be electrically connected to the high-voltage circuit of the vehicle's power battery. This effectively reuses the high-voltage side of the power battery, allowing the high-voltage side of the power battery to transmit a wake-up voltage signal to the wake-up detection module 30. The wake-up detection module 30 then transmits the wake-up voltage signal to the signal transmission module 20, which in turn transmits it to the electronically controlled wake-up module 10. The electronically controlled wake-up module 10 can then wake up the electronically controlled components in the vehicle. In other words, in this embodiment, after applying the wake-up circuit to the vehicle, by electrically connecting the wake-up detection module 30 to the high-voltage circuit of the vehicle's power battery, even when the KL15 wake-up line is absent or has poor contact, the wake-up circuit provided in this embodiment can still effectively wake up the electronically controlled components, improving the wake-up efficiency for these components.
[0060] It should be noted that the power battery in a vehicle is used to provide power to the vehicle so that it can run normally, and the power battery usually exists in the form of a battery pack.
[0061] Furthermore, in related technologies, a high-voltage isolated power supply is used as a wake-up source to activate electronic control components. However, this high-voltage isolated power supply requires high-voltage MOSFETs, transformers, and power control chips, resulting in high costs. In this embodiment, when applying the wake-up circuit to a vehicle, the wake-up detection module 30 can be directly electrically connected to the high-voltage circuit of the power battery, thereby reusing the high-voltage side of the power battery and avoiding the need for an additional high-voltage isolated power supply, thus saving costs.
[0062] Additionally, in the embodiments of this application, such as Figure 1 As shown, the electronically controlled wake-up module 10 may include a wake-up control circuit 11, a sleep circuit 12, a controller 13, a power control chip 14, and a low-voltage isolated power supply 15. The wake-up control circuit 11 is electrically connected to the signal transmission module 20, and is also electrically connected to the sleep circuit 12. The sleep circuit 12 is electrically connected to the low-voltage isolated power supply 15. The wake-up control circuit 11 is also electrically connected to the controller 13, which is electrically connected to the power control chip 14. The power control chip 14 is also electrically connected to the low-voltage isolated power supply 15. When the wake-up voltage signal transmitted by the signal transmission circuit is valid, the valid wake-up voltage signal is transmitted to the wake-up control circuit 11, enabling the wake-up control circuit 11. This causes the wake-up control circuit 11 to generate a KL30_ON enable signal to control the sleep circuit 12 to turn on. At the same time, the wake-up control circuit 11 also generates an enable signal INH. After being processed by the controller 13, an enable signal Fly_EN is generated. After receiving the enable signal Fly_EN, the power control chip 14 controls the low-voltage isolated power supply 15 to start working, thereby waking up the electronically controlled components. The low-voltage isolated power supply 15 may include a MOSFET, a transformer assembly, a diode, and a capacitor. The MOSFET is electrically connected to the power control chip 14 and also to the transformer assembly, and is grounded. The transformer assembly is electrically connected to the diode and is grounded. The diode is electrically connected to the capacitor and is grounded. The inductor assembly is electrically connected to the sleep circuit 12. It should be noted that the transformer assembly includes a primary winding and a secondary winding. The primary winding is used for current inflow, and the secondary winding is used for current outflow. The MOSFET is electrically connected to the primary winding, and the secondary winding is electrically connected to the diode, and is grounded.
[0063] In addition, in this embodiment, the potential of the first end of the wake-up detection module 30 is higher than the potential of the second end of the wake-up detection module 30. The wake-up detection module 30 may include multiple resistors connected in series. Along the direction from the first end to the second end of the wake-up detection module 30, the potential corresponding to every other resistor decreases sequentially. One of the multiple resistors is electrically connected to the high-voltage circuit of the power battery in the vehicle, and the other resistor is grounded. The signal transmission module 20 is electrically connected to the same position or different positions of potential.
[0064] With this configuration, each resistor can function as a voltage divider, resulting in different potentials after voltage division. This allows the signal transmission module to be connected to the wake-up detection module 30 as needed. In other words, this configuration facilitates the connection of the signal transmission module 20 to the wake-up detection module 30 according to actual requirements.
[0065] It should be noted that when the signal transmission module 20 includes different components, the different components can be electrically connected to the same potential location, and of course, the different components can also be electrically connected to different potential locations.
[0066] Furthermore, the number of resistors in the wake-up detection module 30 can be set according to actual needs. For example, the number of resistors can be 3, 5, or 8. This embodiment of the application does not limit this specific number.
[0067] In addition, in some embodiments, the wake-up detection module 30 includes a first resistor 31, a second resistor 32 and a third resistor 33 connected in series; the first resistor 31 is electrically connected to the high-voltage circuit of the power battery in the vehicle, and the third resistor 33 is grounded; at least one of the lines between the first resistor 31 and the second resistor 32 and between the second resistor 32 and the third resistor 33 is electrically connected to the signal transmission module 20.
[0068] The signal transmission module 20 can be electrically connected only to the line between the first resistor 31 and the second resistor 32, or only to the line between the second resistor 32 and the third resistor 33, or simultaneously to the line between the first resistor 31 and the second resistor 32, and the line between the second resistor 32 and the third resistor 33. Furthermore, the first resistor 31, the second resistor 32, and the third resistor 33 all function as voltage dividers.
[0069] In some embodiments, the signal transmission module 20 includes a first signal isolator 22; the first signal isolator 22 includes a first signal input terminal 223 and a first signal output terminal 224; the first signal input terminal 223 is connected to a first position of the wake-up detection module 30, and the first signal output terminal 224 is connected to the electronically controlled wake-up module 10; wherein the voltage of the first input terminal 223 is greater than the voltage of the first signal output terminal 224. Additionally, the signal transmission module 20 also includes a first isolation power supply 21; the first isolation power supply 21 includes a first voltage input terminal 211 and a first voltage output terminal 212, and the first signal isolator 22 also includes a first isolation voltage input terminal 221 and a second isolation voltage input terminal 222; both the first voltage input terminal 211 and the first isolation voltage input terminal 221 are connected to a second position of the wake-up detection module 30, the voltage at the second position is higher than the voltage at the first position, and the first voltage output terminal 212 is connected to the second isolation voltage input terminal 222.
[0070] With this configuration, after the wake-up detection module 30 is electrically connected to the high-voltage circuit of the vehicle's power battery, it can transmit a higher voltage, allowing both the first voltage input terminal 211 of the first isolation power supply 21 and the first isolation power supply input terminal 21 of the first signal isolator 22 to be supplied with a higher voltage. The first signal isolator 22 has a high-voltage section and a low-voltage section; it can only function properly when both are powered. The first isolation voltage input terminal 221 and the first signal input terminal 223 are located in the high-voltage section, while the second isolation voltage input terminal 222 and the first signal output terminal 224 are located in the low-voltage section. Furthermore, the wake-up detection module 30 also transmits a higher wake-up voltage signal to the first signal input terminal 223, so that the high-voltage section of the first signal isolator 22 receives a higher voltage and a higher wake-up voltage signal. The first isolation power supply 21 converts the higher voltage received at the first voltage input terminal 211 into a lower voltage and transmits it to the second isolation voltage input terminal 222. Thus, both the high-voltage and low-voltage sections of the first signal isolator 22 are powered. The first signal isolator 22 converts the higher wake-up voltage signal into a lower wake-up voltage signal and transmits it to the electronically controlled wake-up module 10, causing the electronically controlled wake-up module 10 to wake up the electronically controlled components. In other words, this configuration effectively enables the electronically controlled wake-up module 10 to wake up the electronically controlled components.
[0071] For example, such as Figure 1As shown, the first voltage input terminal 211 and the first isolation voltage input terminal 221 receive VCC_H_in. The first isolation power supply 21 converts VCC_H_in into VCC_L_out, and VCC_L_out is transmitted to the second isolation voltage input terminal 222, enabling the first signal isolator 22 to operate normally. The first signal input terminal 223 receives WAEK_H, and the first signal isolator 22 converts WAEK_H into WAEK_L, which is then transmitted to the electronically controlled wake-up module 10. Here, WAKE represents the wake-up voltage signal, VCC represents voltage, in represents input, out represents output, H represents high, and L represents low. Additionally, in Figure 1 In this context, HV can represent the high-voltage circuit of the power battery.
[0072] It should be noted that when the wake-up detection module 30 includes a first resistor 31, a second resistor 32, and a third resistor 33 connected in series, such as Figure 1 As shown, the first position can be the position between the first resistor 31 and the second resistor 32, and the second position can be the position between the second resistor 32 and the third resistor 33, and in Figure 1 In the diagram, letter A represents the first position, and letter B represents the second position.
[0073] Additionally, in some embodiments, such as Figure 2 As shown, the signal transmission module 20 may include a signal transmission chip 23; the signal transmission chip 23 includes a first chip voltage input terminal 231, a first chip signal input terminal 232, and a first chip signal output terminal 233; the first chip voltage input terminal 231 is electrically connected to a first position of the wake-up detection module 30, the first chip signal input terminal 232 is electrically connected to a second position of the wake-up detection module 30, the voltage at the first position is higher than the voltage at the second position, and the first chip signal output terminal 233 is electrically connected to the electronically controlled wake-up module 10; wherein, the voltage at the first chip voltage input terminal 231 is greater than the voltage at the first chip signal output terminal 233. Furthermore, the signal transmission chip 23 is used to transmit the wake-up voltage signal from the wake-up detection module 30 to the electronically controlled wake-up module 10.
[0074] This configuration effectively ensures the normal operation of the high-voltage side signal transmission chip 23 by simply setting up the signal transmission chip 23. The wake-up voltage signal is also transmitted to the signal transmission chip 23, which then transmits it to the electronic control wake-up module 10, enabling the electronic control components to be activated. In other words, the activation of electronic control components can be effectively achieved by setting up the signal transmission chip 23. Furthermore, the signal transmission chip 23 can be installed on a circuit board in the vehicle, occupying a relatively small area, which helps improve the utilization of interior space.
[0075] It should be noted that, in the embodiments of this application, the signal transmission chip 23 may integrate an isolation power supply unit and a signal isolation unit. The isolation power supply unit and the signal isolation unit are electrically connected, and the function of the isolation power supply unit is the same as that of the first isolation power supply 21. The function of the signal isolation unit is the same as that of the first signal isolator 22. For details, please refer to the description in the above embodiments, which will not be repeated here.
[0076] Additionally, in some embodiments, such as Figure 3 As shown, the wake-up circuit may further include a first conversion module 40, and the signal transmission module 20 includes a second isolation power supply 24; the second isolation power supply 24 includes a second voltage input terminal 241 and a second voltage output terminal 242, and the second signal isolator 25 includes a third isolation voltage input terminal 251 and a fourth isolation voltage input terminal 252; the first end of the first conversion module 40 is connected to the second position of the wake-up detection module 30, the second voltage input terminal 241 and the third isolation voltage input terminal 251 are both connected to the second end of the first conversion module 40, the second voltage output terminal 242 is connected to the fourth isolation voltage input terminal 252, and the second signal output terminal 254 is connected to the electronically controlled wake-up module 10; wherein, the voltage at the first end of the first conversion module 40 is greater than the voltage at the second end of the first conversion module 40. In addition, the wake-up circuit also includes a second conversion module 50, and the signal transmission module 20 includes a second signal isolator 25; the second signal isolator 25 includes a second signal input terminal 253 and a second signal output terminal 254, the second conversion module 50 includes an input terminal and an output terminal, the input terminal is connected to the second position, the output terminal is connected to the wake-up detection module 30, and the voltage of the input terminal is greater than the voltage of the output terminal; wherein, the voltage of the second signal input terminal 253 is greater than the voltage of the second signal output terminal 254.
[0077] With this configuration, after the wake-up detection module 30 is electrically connected to the high-voltage circuit of the vehicle's power battery, it can transmit a higher voltage. This higher voltage may not be suitable for the voltages required by the second isolation power supply 24 and the second signal isolator 25. Therefore, the first conversion module 40 can convert the voltage transmitted from the first position of the wake-up detection module 30 to a voltage suitable for the second isolation power supply 24 and the second signal isolator 25 before transmitting it to them. The structure of the second signal isolator 25 is the same as that of the first signal isolator 22; that is, the second signal isolator 25 also has a high-voltage section and a low-voltage section. The third isolation voltage input terminal 251 and the second signal input terminal 253 are both located in the high-voltage section, while the fourth isolation voltage input terminal 252 and the second signal output terminal 254 are both located in the low-voltage section. The voltage converted by the first conversion module 40 can then be transmitted to the third isolation voltage input terminal 251, supplying power to the high-voltage section of the second isolator. The second isolation power supply 24 converts the voltage at the second voltage input terminal 241 into a suitable voltage for the low-voltage section of the second signal isolator 25, transmitting it to the fourth isolation voltage input terminal 252. This ensures that both the high-voltage and low-voltage sections of the fourth isolator are powered. The second signal isolator 25 converts the higher-voltage wake-up voltage signal into a lower-voltage wake-up voltage signal, transmitting it to the electronically controlled wake-up module 10, thus waking up the electronically controlled components. In other words, this configuration effectively enables the electronically controlled wake-up module 10 to wake up the electronically controlled components.
[0078] It should be noted that the first conversion module 40 may include a boost circuit and a buck circuit. After receiving the voltage transmitted by the wake-up detection module 30, the first conversion module 40 can determine whether the voltage meets the requirements of the second isolation power supply 24 and the second signal isolator 25, and thus boost or buck the voltage. The first conversion module 40 may be a DC-DC conversion module.
[0079] It should also be noted that the output voltage range is 0-16V. Among them, 0-16V is a relatively common low voltage. By setting the output voltage range to 0-16V, it can be ensured that the output voltage is well matched with the voltage required by the wake-up detection module 30, thereby facilitating the further operation of the wake-up detection module 30.
[0080] Additionally, in some embodiments, such as Figure 3 As shown, when the wake-up circuit includes the second conversion module 50, the second signal input terminal 253 is electrically connected to the first position of the wake-up detection module 30 through the second conversion module 50. The second conversion module 50 is used to convert the voltage transmitted from the first position of the wake-up detection module 30.
[0081] By setting up the second conversion module 50, the second conversion module 50 can convert the voltage transmitted to the second signal input terminal 253 by the wake-up detection module 30, so that the converted voltage of the second conversion module 50 meets the voltage required by the second signal isolator 25. This facilitates the second signal isolator 25 to receive a wake-up voltage signal of appropriate voltage and transmit the wake-up voltage signal to the electronically controlled wake-up module 10, so that the electronically controlled wake-up module 10 wakes up the electronically controlled components. That is, by setting up the second conversion module 50, the voltage of the wake-up voltage signal transmitted to the second signal input terminal 253 can be converted to meet the requirements of the second signal isolator 25, which in turn facilitates the second signal isolator 25 to transmit the wake-up voltage signal to the electronically controlled wake-up module 10.
[0082] It should be noted that the second conversion module 50 may include a boost circuit and a buck circuit. After receiving the voltage transmitted by the wake-up detection module 30, the second conversion module 50 can determine whether the voltage meets the requirements of the second signal isolator 25, and thus boost or buck the voltage accordingly. The second conversion module 50 can be a DC-DC converter module, or it can be a voltage divider circuit.
[0083] Additionally, in some embodiments, such as Figure 4 As shown, the wake-up circuit may further include a third conversion module 60, and the signal transmission module 20 includes a third signal isolator 26; the third signal isolator 26 includes a fifth isolation voltage input terminal 261, a sixth isolation voltage input terminal 262, a third signal input terminal 263, and a third signal output terminal 264; the fifth isolation voltage input terminal 261 is connected to the first position of the wake-up detection module 30, the third signal input terminal 263 is connected to the second position of the wake-up detection module 30, the voltage at the first position is higher than the voltage at the second position, the third signal output terminal 264 is connected to the electronically controlled wake-up module 10, the first end of the third conversion module 60 is connected to the sixth isolation voltage input terminal 262, and the second end of the third conversion module 60 is used to connect to the output circuit of the low-voltage battery in the vehicle, the voltage at the first end of the third conversion module 60 is greater than the voltage at the second end of the third conversion module 60, or the voltage at the first end of the third conversion module 60 is less than the voltage at the second end of the third conversion module 60; wherein, the voltage at the fifth isolation voltage input terminal 261 is greater than the voltage at the sixth isolation voltage input terminal 262. In addition, the third signal isolator 26 is used to transmit the wake-up voltage signal from the wake-up detection module 30 to the electronically controlled wake-up module 10.
[0084] With this configuration, after the wake-up detection module 30 is electrically connected to the high-voltage circuit of the vehicle's power battery, it can transmit a higher voltage, allowing the fifth isolation voltage input terminal 261 of the third signal isolator 26 to receive a higher voltage. The structure of the third signal isolator 26 can be the same as that of the first signal isolator 22; that is, the third signal isolator 26 also has a high-voltage section and a low-voltage section. The third signal isolator 26 can only function normally when both the high-voltage and low-voltage sections are powered. The third isolation voltage input terminal 251 and the third signal input terminal 263 are located in the high-voltage section, while the fourth isolation voltage input terminal 252 and the third signal output terminal 264 are located in the low-voltage section. Furthermore, the wake-up detection module 30 transmits a higher wake-up voltage signal to the first signal input terminal 223, so that the high-voltage section of the first signal isolator 22 receives a higher voltage, and the higher-voltage wake-up voltage signal ensures that the high-voltage section of the third signal isolator 26 can be powered normally. Simultaneously, the third conversion module 60 can be electrically connected to the output circuit of the low-voltage battery in the vehicle. The third conversion module 60 can then convert the voltage transmitted from the low-voltage battery output circuit, supplying power to the low-voltage section of the third signal isolator 26, thus enabling the third signal isolator 26 to operate normally. The third signal isolator 26 converts the higher-voltage wake-up voltage signal into a lower-voltage wake-up voltage signal and transmits it to the electronically controlled wake-up module 10, causing the electronically controlled wake-up module 10 to wake up the electronically controlled components. In other words, this setup effectively enables the electronically controlled wake-up module 10 to wake up the electronically controlled components, while also saving on isolation power and reducing costs.
[0085] It should be noted that the third conversion module 60 may include a boost circuit and a buck circuit. After receiving the voltage transmitted by the wake-up detection module 30, the third conversion module 60 can determine whether the voltage meets the requirements of the third signal isolator 26, and thus boost or buck the voltage accordingly. The third conversion module 60 can be a DC-DC conversion module. Alternatively, the third conversion module 60 can be a module already present in the vehicle. In this embodiment, this module can be directly reused. Of course, in this embodiment, an additional third conversion module 60 may also be provided.
[0086] In addition, vehicles are usually equipped with a power battery and a low-voltage battery. The power battery provides power to the vehicle so that it can run normally, while the low-voltage battery can provide power to other components in the vehicle. For example, the low-voltage battery provides power to the headlights and taillights, the display screen on the center console, and the low-voltage battery provides a low-voltage wake-up voltage signal to the electronic control wake-up module 10.
[0087] In addition, in this embodiment of the application, when the signal transmission module 20 includes a second isolation power supply 24 and a second signal isolator 25, the wake-up circuit may also include a third conversion module 60. The third conversion module 60 is electrically connected to the fourth isolation voltage input terminal 252 of the second signal isolator 25 through a first diode. The second voltage output terminal 242 of the second isolation power supply 24 is electrically connected to the fourth isolation voltage input terminal 252 through a second diode. Thus, the second signal isolator 25 can transmit electrical energy through the third conversion module 60 to power the low-voltage part of the second signal isolator 25. The second signal isolator 25 can also transmit electrical energy through the second isolation power supply 24 to power the low-voltage part of the second signal isolator 25.
[0088] In addition, in some embodiments, the signal transmission module 20 includes a third isolation power supply 27; the third isolation power supply 27 includes a third voltage input terminal 271 and a signal transmission terminal 272, the third voltage input terminal 271 is electrically connected to the first position of the wake-up detection module 30, and the signal transmission terminal 272 is electrically connected to the electronically controlled wake-up module 10; wherein, the third isolation power supply 27 is used to transmit the wake-up voltage signal transmitted from the wake-up detection module 30 to the electronically controlled wake-up module 10.
[0089] The logic of the wake-up function of the electronically controlled wake-up module 10 is as follows: when the voltage of the wake-up voltage signal is higher than a certain value, the wake-up voltage signal is enabled; when the voltage of the wake-up voltage signal is lower than a certain value, the wake-up voltage signal is disabled. Based on this, in this embodiment, by setting a third isolation power supply 27, which acts as a component for transmitting the wake-up voltage signal, and since the wake-up voltage signal itself has voltage, the third isolation power supply 27 can convert the voltage to meet the voltage required to wake up the electronically controlled wake-up module 10. Therefore, only the third isolation power supply 27 is needed to wake up the electronically controlled wake-up module 10, saving on signal isolators and reducing costs.
[0090] In this embodiment, since the wake-up detection module 30 is electrically connected to the high-voltage circuit of the power battery in the vehicle, the signal transmission module 20 is electrically connected to the wake-up detection module 30, and the wake-up detection module 30 is electrically connected to the electronically controlled wake-up module 10, in practical applications, the wake-up detection module 30 can be electrically connected to the high-voltage circuit of the power battery in the vehicle, thereby effectively reusing the high-voltage side of the power battery. This allows the high-voltage side of the power battery to transmit a wake-up voltage signal to the wake-up detection module 30, which then transmits the wake-up voltage signal to the signal transmission module 20. The signal transmission module 20 then transmits the wake-up voltage signal to the electronically controlled wake-up module 10, which can then wake up the electronically controlled components in the vehicle. In other words, in this embodiment, after applying the wake-up circuit to the vehicle, by electrically connecting the wake-up detection module 30 to the high-voltage circuit of the power battery in the vehicle, even when the KL15 wake-up line is absent or has poor contact, the wake-up circuit provided in this embodiment can still effectively wake up the electronically controlled components, improving the wake-up efficiency for electronically controlled components.
[0091] This application provides a wake-up method, which is applied to the wake-up circuit in any of the above embodiments. The wake-up circuit includes an electronically controlled wake-up module, which includes a wake-up control circuit, a sleep circuit, a controller, a power control chip, and a low-voltage isolated power supply. Figure 6 As shown, the wake-up method includes:
[0092] Step 601: When the wake-up detection module receives the voltage signal from the high-voltage circuit in the vehicle, the wake-up detection module reduces the voltage of the voltage signal and transmits the reduced voltage signal to the signal transmission module, so that the signal transmission module transmits the wake-up voltage signal to the wake-up control circuit. The wake-up control circuit transmits the first signal to the hibernation circuit and the second signal to the controller, so that the hibernation circuit runs and the controller controls the low-voltage isolation power supply to run, so that the low-voltage isolation power supply provides the wake-up voltage signal to the electronic control components, thereby waking up the electronic control components.
[0093] The wake-up detection module can be connected to the high-voltage circuit in the vehicle, which can be the output circuit of the vehicle's power battery. Once the wake-up detection module receives a voltage signal from the high-voltage circuit, it reduces the voltage signal and transmits this reduced voltage signal to the signal transmission module. The signal transmission module receives this signal and transmits it as a wake-up voltage signal to the wake-up control circuit. Upon receiving the wake-up control circuit, it transmits a first signal to the hibernation circuit and a second signal to the controller. The hibernation circuit, upon receiving the first signal, begins operation and sends a signal to the low-voltage isolated power supply. The controller also controls the operation of the low-voltage isolated power supply, waking it up. The low-voltage isolated power supply then provides a wake-up voltage signal to the electronic control components, waking them up and enabling them to begin operation.
[0094] This application provides an inverter that includes the wake-up circuit found in any of the above embodiments.
[0095] This application provides an electric drive assembly that includes the inverter described in the above embodiments.
[0096] This application provides a vehicle that includes a power battery and a wake-up circuit as described in any of the above embodiments; or an inverter as described in the above embodiments; or an electric drive assembly as described in the above embodiments; the wake-up detection module 30 is electrically connected to the high-voltage circuit of the power battery.
[0097] It should be noted that vehicles include, but are not limited to, cars and buses.
[0098] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0099] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.
Claims
1. A wake-up circuit, characterized in that, The wake-up circuit includes: an electronically controlled wake-up module, a signal transmission module, and a wake-up detection module; The wake-up detection module is used to connect to the high-voltage circuit of the power battery in the vehicle. The signal transmission module is connected to the wake-up detection module and the signal transmission module is connected to the electronic control wake-up module. The electronic control wake-up module is used to connect to the electronic control components in the vehicle to provide a wake-up voltage signal to the electronic control components.
2. The wake-up circuit according to claim 1, characterized in that, The signal transmission module includes a first signal isolator; The first signal isolator includes a first signal input terminal and a first signal output terminal; The first signal input terminal is connected to the first position of the wake-up detection module, and the first signal output terminal is connected to the electronically controlled wake-up module; Wherein, the voltage at the first input terminal is greater than the voltage at the first signal output terminal.
3. The wake-up circuit according to claim 2, characterized in that, The signal transmission module also includes a first isolation power supply; The first isolation power supply includes a first voltage input terminal and a first voltage output terminal, and the first signal isolator also includes a first isolation voltage input terminal and a second isolation voltage input terminal; Both the first voltage input terminal and the first isolation voltage input terminal are connected to the second position of the wake-up detection module. The voltage at the second position is higher than the voltage at the first position. The first voltage output terminal is connected to the second isolation voltage input terminal.
4. The wake-up circuit according to claim 1, characterized in that, The signal transmission module is a signal transmission chip, which includes a first chip voltage input terminal, a first chip signal input terminal, and a first chip signal output terminal. The voltage input terminal of the first chip is connected to the first position of the wake-up detection module, the signal input terminal of the first chip is connected to the second position of the wake-up detection module, the voltage at the first position is higher than the voltage at the second position, and the signal output terminal of the first chip is connected to the electronically controlled wake-up module. Wherein, the voltage at the voltage input terminal of the first chip is greater than the voltage at the signal output terminal of the first chip.
5. The wake-up circuit according to claim 1, characterized in that, The wake-up circuit further includes a first conversion module, and the signal transmission module includes a second isolation power supply; The second isolation power supply includes a second voltage input terminal and a second voltage output terminal, and the second signal isolator includes a third isolation voltage input terminal and a fourth isolation voltage input terminal; The first end of the first conversion module is connected to the second position of the wake-up detection module, the second voltage input terminal and the third isolation voltage input terminal are both connected to the second end of the first conversion module, the second voltage output terminal is connected to the fourth isolation voltage input terminal, and the second signal output terminal is connected to the electronically controlled wake-up module; Wherein, the voltage at the first terminal of the first conversion module is greater than the voltage at the second terminal of the first conversion module.
6. The wake-up circuit according to claim 5, characterized in that, The wake-up circuit further includes a second conversion module, and the signal transmission module includes a second signal isolator; The second signal isolator includes a second signal input terminal and a second signal output terminal. The second conversion module includes an input terminal and an output terminal. The input terminal is connected to the second position, and the output terminal is connected to the wake-up detection module. The voltage at the input terminal is greater than the voltage at the output terminal. Wherein, the voltage at the second signal input terminal is greater than the voltage at the second signal output terminal.
7. The wake-up circuit according to claim 6, characterized in that, The voltage range of the output terminal is 0-16V.
8. The wake-up circuit according to claim 1, characterized in that, The wake-up circuit further includes a third conversion module, and the signal transmission module includes a third signal isolator; The third signal isolator includes a fifth isolation voltage input terminal, a sixth isolation voltage input terminal, a third signal input terminal, and a third signal output terminal; The fifth isolation voltage input terminal is connected to the first position of the wake-up detection module, the third signal input terminal is connected to the second position of the wake-up detection module, the voltage at the first position is higher than the voltage at the second position, the third signal output terminal is connected to the electronically controlled wake-up module, the first terminal of the third conversion module is connected to the sixth isolation voltage input terminal, the second terminal of the third conversion module is used to connect to the output circuit of the low-voltage battery in the vehicle, the voltage at the first terminal of the third conversion module is greater than the voltage at the second terminal of the third conversion module, or the voltage at the first terminal of the third conversion module is less than the voltage at the second terminal of the third conversion module; The voltage at the fifth isolation voltage input terminal is greater than the voltage at the sixth isolation voltage input terminal.
9. The wake-up circuit according to claim 1, characterized in that, The signal transmission module includes a third isolation power supply; The third isolation power supply includes a third voltage input terminal and a signal transmission terminal. The third voltage input terminal is electrically connected to the first position of the wake-up detection module, and the signal transmission terminal is electrically connected to the electronically controlled wake-up module. The voltage at the third voltage input terminal is greater than the voltage at the signal transmission terminal.
10. The wake-up circuit according to any one of claims 1-9, characterized in that, The potential at the first terminal of the wake-up detection module is higher than the potential at the second terminal of the wake-up detection module, and the wake-up detection module includes multiple resistors connected in series; Along the direction from the first end to the second end of the wake-up detection module, the potential corresponding to every other resistor decreases sequentially. One of the multiple resistors is electrically connected to the high-voltage circuit of the power battery in the vehicle, and the other resistor is grounded. The signal transmission module is connected to the same potential or different potential locations.
11. The wake-up circuit according to claim 10, characterized in that, The wake-up detection module includes a first resistor, a second resistor, and a third resistor connected in series. The first resistor is electrically connected to the high-voltage circuit of the power battery in the vehicle, and the third resistor is grounded; The line between the first resistor and the second resistor, and the line between the second resistor and the third resistor, at least one of the lines is electrically connected to the signal transmission module.
12. The wake-up circuit according to claim 1, characterized in that, The electronically controlled wake-up module includes a wake-up control circuit, a sleep circuit, a controller, a power control chip, and a low-voltage isolated power supply. The wake-up control circuit is connected to the signal transmission module and to the sleep circuit. The sleep circuit is connected to the low-voltage isolated power supply. The wake-up control circuit is also connected to the controller. The controller is connected to the power control chip. The power control chip is connected to the low-voltage isolated power supply. The low-voltage isolated power supply is used to connect to the electronic control components in the vehicle.
13. A wake-up method, characterized in that, The wake-up method is applied to the wake-up circuit according to any one of claims 1-12, the wake-up circuit including an electronically controlled wake-up module, the electronically controlled wake-up module including a wake-up control circuit, a sleep circuit, a controller, a power control chip and a low-voltage isolated power supply; The wake-up method includes: When the wake-up detection module receives a voltage signal from the high-voltage circuit in the vehicle, the wake-up detection module reduces the voltage of the voltage signal and transmits the reduced voltage signal to the signal transmission module, so that the signal transmission module transmits a wake-up voltage signal to the wake-up control circuit. The wake-up control circuit transmits a first signal to the hibernation circuit and a second signal to the controller, so that the hibernation circuit operates and the controller controls the low-voltage isolated power supply to operate, so that the low-voltage isolated power supply provides a wake-up voltage signal to the electronic control component, thereby waking up the electronic control component.
14. An inverter, characterized in that, The inverter includes a wake-up circuit as described in any one of claims 1-12.
15. An electric drive assembly, characterized in that, The electric drive assembly includes the inverter as described in claim 14.
16. A vehicle, characterized in that, The vehicle includes a wake-up circuit as described in any one of claims 1-12, or an inverter as described in claim 14, or an electric drive assembly as described in claim 15; The wake-up detection module is connected to the high-voltage circuit of the power battery.