Charge wake-up device, domain controller including same, and power management system

Abstract

The invention relates to a charging wake-up device for a domain controller, and the device comprises an interface adaption module which is configured to selectively switch on a corresponding interface circuit based on a charging standard corresponding to an external charging pile, so as to guarantee the mutual compatibility of the charging standards between the external charging pile and a vehicle; the charging identification module is configured to identify a charging confirmation signal from the external charging pile when charging standards between the external charging pile and the vehicle are ensured to be compatible with each other so as to output a corresponding enable signal when the charging confirmation signal is identified; and the power management module is configured to output a predetermined power supply voltage to a single chip microcomputer of the domain controller when receiving the enable signal from the charging identification module so as to wake up the single chip microcomputer. The invention also relates to a domain controller comprising the charging wake-up device and a power management system.

Description

Technical Field

[0001] The present invention relates to the field of charging control of vehicles. More specifically, the present invention relates to a charging wake-up device for a domain controller, a domain controller including the charging wake-up device, and a power management system including the domain controller. Background Art

[0002] With the rapid development of electric vehicles, the technical requirements for charging equipment in the market are also increasing day by day. In order to meet the charging needs of different countries and regions, charging equipment needs to be compatible with multiple charging standards. As a common domain controller product in vehicles, ZCU (Zone Control Unit) cannot achieve compatibility with multiple charging standards, such as China DC 2015, China DC 2023, CHAOJI 2023, and China DC 2015+.

[0003] In addition, in practical applications, there are other problems that need to be solved urgently in existing ZCU products. First, during the charging process, existing ZCU products may damage the charging interface when encountering lightning. This not only affects the service life of the charging equipment but also may pose potential safety hazards to electric vehicles. Second, existing ZCU products cannot recognize wake-up sources in the form of falling edges such as CC1 and CC2, which may cause the device to fail to respond normally when it needs to be woken up. In addition, when the ZCU system is in the sleep state, the CC1 or CC2 signal cannot wake up the ZCU, thus affecting the smooth progress of the charging process. In terms of electromagnetic interference, existing ZCU products may damage electronic components when encountering a high-voltage transient 500V AC signal, affecting the normal operation of the device. Summary of the Invention

[0004] In view of the defects of existing ZCU products in terms of charging interface protection, wake-up source recognition, electromagnetic interference protection, and charging standard compatibility, the present invention proposes an improved charging wake-up device for a domain controller and a domain controller product including the wake-up device.

[0005] According to a first aspect of the present invention, there is provided a charging wake-up device for a domain controller, the domain controller including a single-chip microcomputer for controlling the execution of predetermined vehicle functions, the single-chip microcomputer being in a sleep mode when the vehicle is powered off, the charging wake-up device including:

[0006] An interface adaptation module, the interface adaptation module having a plurality of different interface circuits, each interface circuit being used to be compatible with and match a predetermined charging standard, the interface adaptation module being configured to selectively connect the corresponding interface circuit based on the charging standard corresponding to an external charging pile to ensure the compatibility of the charging standards between the external charging pile and the vehicle;

[0007] A charging recognition module, which is connected to the interface adaptation module and configured to recognize a charging confirmation signal from an external charging pile when ensuring the compatibility of the charging standards between the external charging pile and the vehicle, so as to output a corresponding enabling signal when the charging confirmation signal is recognized; and

[0008] A power management module, which is connected to the charging recognition module and configured to output a predetermined power supply voltage to the single-chip microcomputer of the domain controller when receiving the enabling signal from the charging recognition module, so as to wake up the single-chip microcomputer.

[0009] According to an optional embodiment, the interface adaptation module includes a voltage detection port connected to the single-chip microcomputer, and the single-chip microcomputer is configured to determine the system state of the domain controller of the vehicle by monitoring the voltage value at the voltage detection port when being woken up.

[0010] According to an optional embodiment, the single-chip microcomputer is further configured to report the fault to the external charging pile via the CAN transceiver when a fault occurs in the domain controller of the vehicle.

[0011] According to an optional embodiment, the charging wake-up device further includes a diagnosis module, which is connected to the external charging pile on one hand and the interface adaptation module on the other hand. The diagnosis module is configured to monitor the charging state of the external charging pile in real time, and adjust the connection state of the corresponding interface circuit in the interface adaptation module when detecting an abnormal charging state of the external charging pile, so as to change the voltage value at the voltage detection port in the interface adaptation module.

[0012] According to an optional embodiment, the charging wake-up device further includes a wake-up source recognition module, which is connected to the interface adaptation module on one hand and the single-chip microcomputer on the other hand. The wake-up source recognition module is configured to output a corresponding analog signal when receiving a charging confirmation signal from the interface adaptation module, and the single-chip microcomputer is configured to recognize the corresponding wake-up source based on the analog signal.

[0013] According to an optional embodiment, a surge protection module, which is connected between the external charging pile and the interface adaptation module, is used to filter out transient high-voltage pulses and lightning strike signals from the external charging pile, so as to protect each electronic device in the domain controller from being damaged by high-voltage surges.

[0014] According to an optional embodiment, each of the interface circuits is composed of at least one resistor and an electronic switch.

[0015] According to an optional embodiment, the charging confirmation signal is the falling edge of the CC1 signal or the CC2 signal.

[0016] The second aspect of the present invention also relates to a domain controller for a vehicle, which includes:

[0017] A single-chip microcomputer for controlling the execution of predetermined vehicle functions; and

[0018] The charging wake-up device as described above, which wakes up the single-chip microcomputer when charging the vehicle by means of an external charging pile.

[0019] The third aspect of the present invention also relates to a power management system, which includes the domain controller as described above.

[0020] According to the charging wake-up device of the present invention, in terms of charging interface protection, when lightning is encountered during charging, it can effectively prevent damage to the charging interface, improving the service life and safety of the device. In terms of wake-up source recognition, the device can recognize wake-up sources in the form of falling edges such as CC1 and CC2, ensuring that the device can respond normally when wake-up is required. In addition, when the ZCU system is in the sleep state, the wake-up device of the present invention can successfully wake up the ZCU through the CC1 or CC2 signal, ensuring the smooth progress of the subsequent charging process. In terms of electromagnetic interference protection, the charging wake-up device of the present invention can effectively protect electronic components and prevent damage when encountering a high-voltage transient 500V AC signal. In terms of charging standard compatibility, the charging wake-up device and domain controller products of the present invention can simultaneously support the CHAOJI, China DC 2015, and China DC 2023 standards, as well as simultaneously support the China DC 2015+ and China DC 2015 and China DC 2023 standards, meeting different market requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] By incorporating the accompanying drawings herein and the specific embodiments that follow, which are used to illustrate certain principles of the present invention, other features and advantages of the method of the present invention will become clear or will be more specifically illustrated. Figure 1 FIG. shows a schematic structural diagram of a charging wake-up device according to an exemplary embodiment of the present invention.

[0022] Figure 1 FIG. shows a schematic structural diagram of a charging wake-up device according to an exemplary embodiment of the present invention.

[0023] Figure 2 FIG. shows Figure 1 a circuit diagram of a first embodiment of the interface adaptation module in

[0024] Figure 3 FIG. shows Figure 1 a circuit diagram of a second embodiment of the interface adaptation module in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The charging wake-up device for a domain controller according to the present invention will be described below with reference to the accompanying drawings and by way of examples. In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention for those skilled in the relevant art. However, it is obvious to those skilled in the relevant art that some of these specific details may not be required for the implementation of the present invention. On the contrary, the present invention can be implemented by considering any combination of the following features and elements, regardless of whether they relate to different embodiments. Therefore, the following aspects, features, embodiments, and advantages are for illustrative purposes only and should not be regarded as elements or limitations of the claims.

[0026] Existing ZCU products still have many deficiencies in terms of charging interface protection, wake-up source identification, electromagnetic interference protection, and charging standard compatibility. In particular, existing ZCU products have limitations in supporting different charging standards. For example, they cannot support CHAOJI, China DC 2015, and China DC 2023 standards simultaneously, or support China DC 2015+, China DC 2015, and China DC 2023 standards simultaneously.

[0027] In view of the deficiencies of existing ZCU products in charging interface protection, wake-up source identification, electromagnetic interference protection, and charging standard compatibility, the present invention proposes an improved charging wake-up device for a domain controller and a domain controller product including the wake-up device. This product has significant advantages in multiple aspects and is expected to bring a more efficient, safer, and more reliable solution to the field of electric vehicle charging.

[0028] Figure 1 A schematic structural diagram of a charging wake-up device according to an exemplary embodiment of the present invention is shown. The charging wake-up device is disposed between an external charging pile and a domain controller inside the vehicle, and the domain controller can be applied particularly in the vehicle's power management system. The domain controller includes a single-chip microcomputer for controlling and executing predetermined vehicle functions (such as battery pack monitoring and management), which is, for example, a power management unit. The single-chip microcomputer is in a sleep mode when the vehicle is powered off.

[0029] Next, refer to Figure 1 to introduce in detail the internal structure of the charging wake-up device and its connection relationship with the charging pile and the domain controller.

[0030] First, the charging wake-up device may include an interface adaptation module, which has a plurality of different interface circuits, and each interface circuit is used to be compatible with and match a predetermined charging standard. The interface adaptation module can selectively connect the corresponding interface circuit based on the charging standard corresponding to the external charging pile to ensure the compatibility of the charging standards between the external charging pile and the vehicle.

[0031] In addition, the charging wake-up device may further include a charging recognition module connected to the interface adaptation module. When it is ensured that the charging standards between the external charging pile and the vehicle are mutually compatible, the charging recognition module can recognize the charging confirmation signal from the external charging pile and output a corresponding enabling signal when receiving the charging confirmation signal. The enabling signal from the charging recognition module can be transmitted to the power management module connected to the charging recognition module. When receiving the enabling signal from the charging recognition module, the power management module outputs a predetermined power supply voltage (for example, 5V, 3.3V, and 1.3V) to the single-chip microcomputer of the domain controller to wake up the single-chip microcomputer.

[0032] Specifically, when the ZCU is in the sleep mode, the charging recognition module can be used to recognize the falling edge of signals such as CC1 or CC2. When the charging recognition module monitors a certain voltage range, it can determine that signals such as CC1 are inserted. If a desired wake-up signal is recognized, the charging recognition module can output a high-level enabling signal to activate the power management module to ultimately achieve the wake-up of the ZCU.

[0033] As an optional example, a surge protection module can be provided between the external charging pile and the interface adaptation module to filter out transient high-voltage pulses and lightning strike signals from the external charging pile to protect each electronic device in the domain controller from damage by high-voltage surges. For example, the surge protection module can be composed of a surge protection TVS tube, which can couple 500V AC pulses during vehicle charging to protect the ports of the single-chip microcomputer or the charging recognition module from high-voltage damage.

[0034] As another optional example, the interface adaptation module can include a voltage detection port connected to the single-chip microcomputer, and when the single-chip microcomputer is woken up, it can determine the system state of the vehicle's domain controller by monitoring the voltage value at the voltage detection port. When it is determined that a fault occurs in the domain controller, the single-chip microcomputer can report the fault to the external charging pile via the CAN transceiver.

[0035] In addition, the charging wake-up device may further include a diagnosis module, which is connected to the external charging pile on one hand and the interface adaptation module on the other hand. When the vehicle is charging, the diagnosis module can monitor the charging state of the external charging pile in real time and adjust the connection state of the corresponding interface circuit in the interface adaptation module when detecting an abnormal charging state of the external charging pile, so that the voltage value at the voltage detection port in the interface adaptation module changes.

[0036] Optionally, the charging wake-up device may further include a wake-up source identification module, which is connected to the interface adaptation module on one hand and to the single-chip microcomputer on the other hand. The wake-up source identification module can output a corresponding analog signal when receiving a charging confirmation signal from the interface adaptation module - the charging confirmation signal can be, for example, the falling edge of the CC1 signal or the CC2 signal. Subsequently, the single-chip microcomputer can identify the corresponding wake-up source based on this analog signal. For example, it can identify whether it is a CC1 wake-up source or a CC2 wake-up source.

[0037] Figure 2 shows Figure 1 a circuit diagram of a first embodiment of the interface adaptation module in [reference], which can be used to adapt the CC1 signal, for example. As Figure 2 shown in [reference], in order to prevent the injection current from being too high and damaging the single-chip microcomputer channel, the interface adaptation module selects the method of a voltage-dividing bridge, which can not only ensure a reasonable voltage range but also ensure that the injection current is not too high.

[0038] Specifically, the interface adaptation module may include a plurality of interface circuits, and each interface circuit is composed of at least one resistor (R1, R2, R3, R4, or R5) and an electronic switch (S1, S2, S3, or S4). When a charging abnormal state is detected, the diagnostic module can achieve diagnosis by changing the voltage of the CC1 channel. In particular, the voltage value at the above detection port can be changed by controlling the on / off of at least one of the switches S1, S2, S3, and S4. Different voltage values represent different system states, so that the corresponding system faults can be reported to the charging pile through the CAN bus.

[0039] Figure 2 The shown interface adaptation module can simultaneously support the compatibility design requirements of China DC 2015+ and China DC 2015, as well as the compatibility design requirements of China DC 2015 and CHAOJI 2023. For example, if the ZCU needs to support the compatibility design requirements of China DC 2015+ and China DC 2015, then R1, R2, and S1 can remain connected, and the switches S2, S3, and S4 can remain disconnected. Optionally, if the ZCU needs to support the compatibility design requirements of China DC 2015 and CHAOJI 2023, then the switches S2, S3, and S4 can remain connected, while S1 and the resistors R1, R2 can not be mounted on the PCB board. It can be understood that the interface circuit can also be controlled to be disconnected by adding an additional control switch between R1 and the CC1 signal line.

[0040] Figure 3 shows Figure 1The circuit diagram of the second embodiment of the interface adaptation module in [the context], and this interface adaptation module can be used, for example, to adapt the CC2 signal. As Figure 3 As shown in [the reference], this adaptation module may include an interface circuit composed of a resistor R6 and a switch S5, which can also simultaneously support the compatibility design requirements of China DC 2015+ and China DC 2015, as well as the compatibility design requirements of China DC2015 and CHAOJI 2023.

[0041] An exemplary embodiment of the present invention also relates to a domain controller for a vehicle, which includes: a microcontroller for controlling and executing predetermined vehicle functions; and the charging wake-up device as described above, which wakes up the microcontroller when charging the vehicle by means of an external charging pile.

[0042] Another exemplary embodiment of the present invention also relates to a battery management system, which includes the domain controller mentioned above.

[0043] According to the charging wake-up device of the present invention, in terms of charging interface protection, when lightning occurs during charging, it can effectively prevent damage to the charging interface, improving the service life and safety of the device. In terms of wake-up source recognition, this device can recognize wake-up sources in the form of falling edges such as CC1 and CC2, ensuring that the device can respond normally when wake-up is required. In addition, when the ZCU system is in a sleep state, the wake-up device of the present invention can successfully wake up the ZCU through the CC1 or CC2 signal, ensuring the smooth progress of the subsequent charging process. In terms of electromagnetic interference protection, the charging wake-up device of the present invention can effectively protect electronic devices and prevent damage when encountering a high-voltage transient 500V AC signal. In terms of charging standard compatibility, the charging wake-up device and domain controller products of the present invention can simultaneously support the CHAOJI and China DC 2015, as well as China DC 2023 standards, and can also simultaneously support the China DC 2015+ and China DC 2015, as well as China DC 2023 standards, meeting different market requirements.

[0044] Those skilled in the art can understand that although the present invention has been disclosed above with preferred embodiments, the present invention is not limited thereto. Any changes and modifications made by those skilled in the art without departing from the spirit and scope of the present invention should be incorporated into the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the scope defined by the claims.

Claims

1. A charging wake-up device for a domain controller, the domain controller includes a single-chip microcomputer for controlling the execution of a predetermined vehicle function, and the single-chip microcomputer is in a sleep mode when the vehicle is powered off, characterized in that, The charging wake-up device includes: An interface adaptation module, which has a plurality of different interface circuits. Each interface circuit is used to be compatible with and match a predetermined charging standard. The interface adaptation module is configured to selectively connect the corresponding interface circuit based on the charging standard corresponding to the external charging pile, so as to ensure the compatibility of the charging standards between the external charging pile and the vehicle; A charging identification module, which is connected to the interface adaptation module and is configured to identify a charging confirmation signal from the external charging pile when ensuring the compatibility of the charging standards between the external charging pile and the vehicle, so as to output a corresponding enabling signal when the charging confirmation signal is identified; and A power management module, which is connected to the charging identification module and is configured to output a predetermined supply voltage to the single-chip microcomputer of the domain controller when receiving the enabling signal from the charging identification module, so as to wake up the single-chip microcomputer.

2. The charging wake-up device according to claim 1, wherein The interface adaptation module includes a voltage detection port connected to the single-chip microcomputer, and the single-chip microcomputer is configured to determine the system state of the vehicle's domain controller by monitoring the voltage value at the voltage detection port when it is woken up.

3. The charging wake-up device according to claim 2, wherein The single-chip microcomputer is further configured to report the fault to the external charging pile via the CAN transceiver when a fault occurs in the vehicle's domain controller.

4. The charging wake-up device according to claim 2 or 3, characterized in that, The charging wake-up device further includes a diagnosis module, which is connected to the external charging pile on the one hand and to the interface adaptation module on the other hand. The diagnosis module is configured to monitor the charging state of the external charging pile in real time and adjust the connection state of the corresponding interface circuit in the interface adaptation module when detecting an abnormal charging state of the external charging pile, so as to change the voltage value at the voltage detection port in the interface adaptation module.

5. The charging wake-up device according to any one of claims 1 to 3, characterized in that The charging wake-up device further includes a wake-up source identification module, which is connected to the interface adaptation module on the one hand and to the single-chip microcomputer on the other hand. The wake-up source identification module is configured to output a corresponding analog signal when receiving a charging confirmation signal from the interface adaptation module, and the single-chip microcomputer is configured to identify the corresponding wake-up source based on this analog signal.

6. The charging wake-up device according to any one of claims 1 to 3, characterized in that, A surge protection module, which is connected between the external charging pile and the interface adaptation module, and is used to filter out transient high-voltage pulses and lightning strike signals from the external charging pile, so as to protect each electronic device in the domain controller from damage by high-voltage surges.

7. The charging wake-up device according to any one of claims 1 to 3, characterized in that Each of the interface circuits is composed of at least one resistor and an electronic switch.

8. The charging and wake-up device according to any one of claims 1 to 3, characterized in that The charging confirmation signal is the falling edge of the CC1 signal or the CC2 signal.

9. A domain controller for a vehicle, characterized in that, The domain controller includes: A single-chip microcomputer, which is used to control and execute predetermined vehicle functions; and The charging wake-up device according to any one of claims 1 to 8, where the charging wake-up device is used to wake up the single-chip microcomputer when charging the vehicle with the help of an external charging pile.

10. A power management system, characterized in that, The power management system includes the domain controller according to claim 9.

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